CN108207894B - Special equipment for protecting crops or fruit tree seedlings - Google Patents

Abstract

The present invention provides special equipment for protecting crops or fruit tree seedlings, including a vehicle body, a water tank, a liquid spraying device, a power transmission device, and a spraying range adjustment device. When the vehicle body moves, a rotational force is generated, and the rotational force provides spraying power for the liquid spraying device. At the same time, the rotational force also provides adjustment power for the spraying range adjustment device. The power transmission device is used to receive the rotational force and transmit the rotational force to the liquid spraying device and the spraying range adjustment device. The water tank is installed on the vehicle body and is used to provide spraying liquid for the liquid spraying device. The liquid spraying device sprays liquid outward under the action of the spraying power. The spraying range adjustment device adjusts the spraying range of the liquid spraying device under the action of the adjustment power. The spraying range adjustment device includes a height adjustment device and a length adjustment device. The height adjustment device is used to adjust the spraying height of the liquid spraying device, and the length adjustment device is used to adjust the horizontal spraying length of the liquid spraying device.

Description

Special equipment for crop or fruit seedling protection

technical field

The invention relates to a protection device for crops or fruit tree seedlings.

Background technique

In the process of modern fruit tree planting, in order to prevent fruit trees and fruits from growing insects or getting sick, it is necessary to regularly use pesticides and other protective liquid sprays for fruit trees to play a preventive role. Inconsistent, the existing spraying equipment is difficult to adjust the spraying height at any time, resulting in poor spraying effect, and the height of fruit trees is often high. , In addition, the manual spraying mode is labor-intensive, and the operator moves slowly to spray the pesticide, and the spraying efficiency is not high.

SUMMARY OF THE INVENTION

In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a pesticide spraying device whose spraying range can be adjusted at any time.

In order to achieve the above technical purpose, the technical solutions adopted in the present invention are as follows.

Special equipment for the protection of crops or fruit tree seedlings, including vehicle body, water tank, liquid spraying device, power transmission device, spraying range adjustment device, when the vehicle body moves, a rotating force is generated, and the rotating force provides spraying power for the liquid spraying device, At the same time, the rotating force also provides adjustment power for the spraying range adjusting device. The power transmission device is used to receive the rotating force and transmit the rotating force to the liquid spraying device and the spraying range adjusting device. The water tank is installed on the vehicle body and is used for the liquid spraying device. Provide spraying liquid, the liquid spraying device sprays liquid outward under the action of spraying power, and the spraying range adjusting device adjusts the spraying range of the liquid spraying device under the action of adjusting power;

The liquid spraying device includes a telescopic guide pipe, a spray head, and a closing switch. The closing switch is used to make the liquid spraying device open or closed. The spray head is installed on the telescopic guide pipe and the spray head is connected to the inner cavity of the telescopic guide pipe , the nozzle is used to spray the liquid outward;

The spraying range adjusting device includes a height adjusting device and a length adjusting device, the height adjusting device is used for adjusting the spraying height of the liquid spraying device, and the length adjusting device is used for adjusting the horizontal spraying length of the liquid spraying device.

As a further improvement of this technical solution.

The above-mentioned vehicle body includes a vehicle frame and an axle. The water tank, the liquid spray device, the power transmission device, and the spray range adjustment device are all installed on the vehicle frame. When the vehicle body moves, the axle rotates and generates a rotational force.

As a further improvement of this technical solution.

The above-mentioned height adjustment device includes a connecting rod, a pushing mechanism, a sliding member, and a main sliding rail. The main sliding rail is installed on the vehicle frame and the guiding direction of the main sliding rail is perpendicular to the ground. The telescopic guide tube is installed on the sliding member. The sliding member is arranged in the main sliding rail, the sliding member is matched with the main sliding rail, and the sliding member can slide along the guiding direction of the main sliding rail. When the sliding member is displaced along the guiding direction of the main sliding rail, the telescopic guide tube can be pulled with Synchronous movement, one end of the connecting rod is connected with the power transmission device, and the other end is in contact with the pushing mechanism. The guide direction of the rail moves up and down, and pulls the push mechanism to move synchronously, the push mechanism contacts the sliding member, pushes the mechanism to move and pushes the sliding member to move along the guide direction of the main slide rail;

The height adjusting device also includes a trigger locking mechanism arranged in the main slide rail. The motion state of the trigger locking mechanism can be divided into a trigger state and a locked state. The push end is located between two adjacent guide columns, and the first link moves and pulls the guide column to move synchronously with it. When the trigger locking mechanism is in the locked state, the trigger locking mechanism can make the push end of the link one disengage from the guide column. , and lock the push mechanism to keep its height unchanged.

As a further improvement of this technical solution.

The above-mentioned sliding member includes a lower fixing plate and an upper fixing plate, the telescopic guide tube is installed between the lower fixing plate and the upper fixing plate, and the lower fixing plate is in contact with the pushing mechanism;

The above-mentioned pushing mechanism includes a pushing plate. The surface of the pushing plate facing the connecting rod 1 is provided with a number of guide columns distributed at even intervals along the height direction of the pushing plate. One end of the connecting rod 1 is connected to the power transmission device, and the other end is In order to push the end and be located between two adjacent guide columns, when the connecting rod moves and pushes the guide column to move up and down along the guiding direction of the main slide rail, the push plate can be pulled to move synchronously;

A sliding member is arranged between the push plate and the lower fixed plate, and the sliding member is a trigger slide rail arranged on the push plate, a trigger slide block arranged on the lower fixed plate and matched with the trigger slide rail, The guide direction of the trigger slide rail is perpendicular to the guide direction of the main slide rail, and the push plate can move towards or away from the connecting rod 1 along the guide direction of the trigger slide rail through the cooperation of the trigger slide block and the trigger slide rail;

The above-mentioned trigger locking mechanism includes a locking member and a locking housing, the locking member is arranged in the locking housing, and the locking member includes a connecting rod, a locking rod, a number of which are arranged on the main slide rail and extend along the The guiding direction of the main slide rail is evenly spaced with locking holes. The connecting rod is used to connect the locking rod and the push plate. The locking rod matches the locking hole and the locking rod and the locking hole are located parallel to the main slide rail guide. On the same straight line in the direction, the locking shell is a cylindrical cylindrical structure with one end open and the other end closed. The locking shell is equipped with a knob that can drive it to rotate. There is a chute running through its wall thickness. The connecting rod is located in the chute and can slide along the guide direction of the chute. The chute can be divided into three parts and are respectively a locking slot, a guide slot, a trigger slot, and a guide slot. One end of the slot one is connected with the locking slot, and the other end is connected with the trigger slot, and the guide slot one is arranged at an angle with the locking slot and between the guide slot one and the trigger slot, and the guide slot one is used for connecting the connecting rod. When the connecting rod is located in the locking groove, the trigger locking mechanism is in a locked state, and when the connecting rod is located in the trigger groove, the trigger locking mechanism is in a triggered state.

As a further improvement of this technical solution.

The above-mentioned length adjusting device comprises a second connecting rod, a first gear rack transmission mechanism, a first bevel gear transmission mechanism, a second bevel gear transmission mechanism, and a second rack and pinion transmission mechanism, and one end of the second connecting rod is connected with the power transmission device, The other end is connected with the first gear rack and pinion transmission mechanism. The power transmission device receives the rotational force generated by the rotation of the axle and transmits it to the second connecting rod. The second connecting rod moves along the axial direction of the axle under the action of power. The tube is connected with the rack and pinion transmission mechanism II, and the power generated by the movement of the connecting rod II is transmitted to the telescopic guide tube through the rack and pinion transmission mechanism I, the bevel gear transmission mechanism I, the bevel gear transmission mechanism II, and the rack and pinion transmission mechanism II. The telescopic draft tube is stretched or contracted under the action of power.

As a further improvement of this technical solution.

The above-mentioned rack and pinion transmission mechanism 1 includes a rack 1, a gear 1, an intermediate rotating shaft 1, and a support frame. The intermediate rotating shaft 1 is arranged horizontally and the axial direction of the intermediate rotating shaft 1 is perpendicular to the axial direction of the axle. In the axial direction of the axle, the support frame is fixedly installed on the frame, the first rack is movably installed on the support frame, and a sliding part 1 is arranged between the first rack and the support frame, and the first sliding part is arranged on the first rack. Slide 1. Slide rail 1, which is arranged on the support frame and matches with the sliding block 1. The guiding direction of the sliding rail 1 is parallel to the axial direction of the axle. The rack 1 can cooperate with the sliding rail 1 along the sliding rail through the sliding block 1. 1 moves in the guiding direction, the gear is sleeved on the outside of the power input shaft end of the intermediate shaft 1 and meshes with the rack 1, the connecting rod 2 is fixedly connected with the rack 1, and the connecting rod 2 can pull the rack 1 when it moves. Synchronous movement, and make the gear rotate, and the gear rotates to drive the intermediate shaft to rotate;

The above-mentioned bevel gear transmission mechanism 1 includes a bevel gear a, a bevel gear b, and a second intermediate shaft. The axial direction of the second intermediate shaft is parallel to the axial direction of the axle. The bevel gear a is sleeved outside the power output shaft end of the first intermediate shaft. The gear b is sleeved on the outside of the power input shaft end of the second intermediate rotating shaft and meshes with the bevel gear a. Once the intermediate rotating shaft rotates, the intermediate rotating shaft two is rotated through the bevel gear a and the bevel gear b;

The above-mentioned bevel gear transmission mechanism 2 includes a bevel gear c, a bevel gear d, an intermediate rotating shaft three, and an intermediate rotating shaft four. A coupling is arranged between the two, the power output shaft end of the intermediate rotating shaft two is connected with the power input shaft end of the coupling one, and the power output shaft end of the coupling one is connected with the power input shaft end of the intermediate rotating shaft three. , the second intermediate shaft rotates and the third shaft rotates through the first coupling, the bevel gear c is sleeved on the outside of the power output shaft end of the intermediate rotating shaft 3, and the bevel gear d is sleeved on the outside of the power input shaft end of the intermediate rotating shaft 4 and is connected with the The bevel gear c meshes, the intermediate rotating shaft rotates three times, and the intermediate rotating shaft rotates four times through the bevel gear c and the bevel gear d;

The above-mentioned rack and pinion transmission mechanism 2 includes a rack 2, a gear 2, and an intermediate rotating shaft 5. The intermediate rotating shaft 5 and the intermediate rotating shaft 4 are arranged coaxially and a coupling 2 is arranged between the two. The power output shaft end of the intermediate rotating shaft 4 is arranged. It is connected with the power input shaft end of the coupling two, the power output shaft end of the coupling two is connected with the power input shaft end of the intermediate rotating shaft five, the intermediate rotating shaft four rotates and the intermediate rotating shaft five rotates through the coupling two, and the rack The second is arranged between the upper fixing plate and the lower fixing plate, and the extension direction of the rack 2 is parallel to the extension direction of the rack 1. A sliding member 2 is arranged between the rack 2 and the lower fixing plate, and the sliding member 2 is The second sliding block is arranged on the second rack, and the second sliding rail is arranged on the lower fixed plate and matches with the second sliding block. The guiding direction of the sliding rail 2 is parallel to the guiding direction of the sliding rail 1. The block two and the slide rail two move along the guiding direction of the slide rail two, the power output end of the rack two is fixedly connected with the telescopic guide tube, the gear two is sleeved on the outside of the power output shaft end of the intermediate shaft five, and the gear two is connected with the telescopic guide tube. The second gear rack meshes, the intermediate rotating shaft fifth rotates, and the telescopic guide tube is extended or contracted through the second gear and the second rack.

As a further improvement of this technical solution.

The above-mentioned length adjusting device also includes a closing mechanism, and the closing mechanism is used to switch the bevel gear c and the bevel gear d in the bevel gear transmission mechanism 2 between the meshing state or the disengaging state;

The bevel gear d and the intermediate rotating shaft 4 are connected by a connecting piece, and the bevel gear d can move along the axial direction of the intermediate rotating shaft 4. The connecting piece is an external spline arranged on the intermediate rotating shaft 4 and a Internal splines of gear d;

The closing mechanism includes a movable bracket and a handle, the movable bracket includes an upper bracket and a lower bracket, and the upper bracket and the lower bracket are integrally structured, the upper bracket is provided with a sleeve hole 1 that matches the fourth intermediate shaft, and the upper bracket is provided. The first sleeve is movably sleeved on the outside of the intermediate rotating shaft 4 and the upper bracket is located above the bevel gear d. The lower bracket is provided with a sleeve hole 2 that matches the intermediate rotating shaft 4. Outside and the lower bracket is located below the bevel gear d. When the movable bracket is displaced along the axial direction of the intermediate shaft 4, the bevel gear b can be pulled to move synchronously with it. The handle includes a rocker and an intermediate rod. The bracket is hinged and the core line of the hinge axis is parallel to the axial direction of the intermediate rotating shaft 4, and the other end is fixedly connected with the rocker. When the rocker is displaced along the axial direction of the intermediate rotating shaft 4, the movable bracket can be pulled by the intermediate rod to move synchronously;

The closing mechanism also includes a casing with a cubic structure, the bevel gear c, the bevel gear d, the power output shaft end of the third intermediate shaft and the power input shaft end of the fourth intermediate shaft are all located in the casing, and the casing is provided with limited Position guide groove, the intermediate rod is located in the limit guide groove, the rocker is located outside the shell, the limit guide groove is divided into three parts and are respectively the first limit groove, the second guide groove, the limit position Slot 2, limit slot 1 and limit slot 2 are arranged horizontally and limit slot 1 is located above limit slot 2, guide slot 2 is vertically arranged and one end of guide slot 2 is connected to limit slot 1, and the other end is connected to limit slot 1. The second limit slot is connected, and the first limit slot, the second guide slot, and the second limit slot constitute a Z-shaped structure. The second guide slot is used to guide the intermediate rod to the first limit slot or the second limit slot. When the position slot 2 is in the position slot 2, the bevel gear c and the bevel gear d are in a meshing state, and when the intermediate rod is in the position slot 1, the bevel gear c and the bevel gear d are in a disengaged state.

As a further improvement of this technical solution.

The above-mentioned liquid spraying device also includes a liquid diversion system and a water pump mechanism. The liquid diversion system is used to transport the liquid in the water tank to the water pump mechanism, and the water pump mechanism is used to transport the liquid to the spray head, and the spray head is used to transport the liquid to the water pump. external spray;

The water pump mechanism includes a pump body, a sealing plug, and a push rod. The pump body is a cylindrical cylinder structure with openings at both ends. An opening of the pump body is provided with a connecting nozzle connected to its inner cavity. The outer circular surface is provided with an interface that is connected to its inner cavity, and the connection between the interface and the liquid diversion system is provided with a one-way valve for controlling the one-way flow of the liquid from the water tank to the pump body, and the sealing plug is arranged on the pump body. In the inner cavity of the push rod and the two form a sealed sliding fit, one end of the push rod is connected with the sealing plug, and the other end is connected with the power transmission device. The power transmission device receives the rotational force generated by the rotation of the axle and transmits it to the push rod Under the action of power, the push rod drives the sealing plug to slide along the extension direction of the pump body cavity. The area between the sealing plug, the pump body cavity and the connecting nozzle constitutes the liquid-containing inner cavity. Through the sliding of the sealing plug in the pump body, So as to push the liquid in the inner cavity of the liquid to flow and discharge through the connecting nozzle;

The liquid diversion system includes a first diversion tube, a second diversion tube, and a diversion hose. One end of the first diversion tube is connected to the water tank, and the other end is connected to the interface of the pump body. One end of the second guide tube is connected to the connecting nozzle of the pump body, the other end is connected to one end of the guide hose, and the other end of the guide hose is connected to the telescopic guide tube. The switch is arranged on the first guide pipe, the second guide pipe is provided with a one-way control mechanism for controlling the unidirectional flow of liquid from the pump body to the nozzle, and the one-way valve is arranged on the first guide The connection between the pipe and the interface and the structure of the one-way valve and the one-way control mechanism are consistent;

The second guide pipe includes a lower guide pipe and an upper guide pipe, the lower guide pipe is connected with the connecting nozzle of the pump body, and the upper guide pipe is sleeved inside the lower guide pipe. The direction control mechanism is arranged at the connection between the lower guide pipe and the upper guide pipe;

The lower guide tube is provided with a built-in step and the center of the built-in step is a water hole. The one-way control mechanism includes a liquid stop ball and a trigger spring. The liquid stop ball is arranged above the water hole and is connected with the water hole. Matching, one end of the trigger spring is in conflict with the liquid stop ball, and the other end is in conflict with the upper guide tube, and the elastic force of the trigger spring makes the liquid stop ball move along the axial direction of the lower guide tube close to the water hole.

As a further improvement of this technical solution.

The above-mentioned power transmission device includes a power transmission mechanism and a linkage member, and the linkage member includes a linkage member 1 and a linkage member 2. The linkage member 1 is connected to the power transmission mechanism, and the linkage member 2 is connected to the linkage member I. Connection, the first connecting rod is connected with the first linkage member, and the second connecting rod is connected with the second linkage member. The power generated by the rotation of the axle is transmitted to the first linkage member through the power transmission mechanism, and is transmitted to the connecting member by the first linkage member. At the same time, the linkage member one also transmits the power to the linkage member two and is transmitted to the connecting rod two by the linkage member two;

The power transmission mechanism includes a transmission shaft and a gear transmission mechanism. The transmission shaft is arranged horizontally and the axial direction of the transmission shaft is perpendicular to the axial direction of the axle. The gear transmission mechanism is a helical gear transmission mechanism, and the helical gear transmission mechanism includes an active helical gear transmission mechanism. The gear, the driven helical gear, the driving helical gear is sleeved on the outside of the axle, the driven helical gear is sleeved on the outside of the transmission shaft, and the driving helical gear meshes with the driven helical gear;

The first linkage member includes a turntable, a connecting plate, a linkage shaft, and a linkage casing. The linkage casing has a cubic structure, and the linkage casing faces the center of the end face of the transmission shaft. A shaft hole 1 is arranged at the shaft hole 1, the axial direction of the shaft hole 1 is parallel to the axial direction of the transmission shaft. It is fixedly connected to the transmission shaft and the two are arranged coaxially. The rotation of the transmission shaft drives the turntable to rotate. One end of the connecting plate 1 is hinged with the turntable 1, and the hinged part deviates from the center of the turntable 1, and the core line of the hinge shaft is parallel to the transmission shaft. In the axial direction of the rotating shaft, the other end of the connecting plate 1 is hinged with the power receiving end of the connecting shaft 1, and the core line of the hinge shaft is parallel to the axial direction of the transmission shaft. When the turntable rotates, the connecting plate 1 is deflected and the connecting shaft 1 moves;

The first linkage member also includes a support plate and a guide column, the support plate is fixedly installed on the frame and the support plate is located under the linkage shell one, the guide column is fixedly installed on the support plate, and the guiding direction of the guide column is perpendicular to the ground. The first linkage housing is also provided with a guide hole matching the guide column, and the linkage casing is installed on the guide column through the guide hole and the guide column, and a deflection of the connecting plate drives the linkage shaft to move The first movement of the linkage shaft can be divided into sliding up and down along the guiding direction of the guide column, and rotating around its own axis. ;

The first connecting rod is fixedly connected with the linkage housing, and when the linkage casing slides up and down along the guiding direction of the guide column, the connecting rod can be pulled to move synchronously with it;

The second interlocking member includes a second connecting plate, a second interlocking shaft, and a second interlocking housing. The second interlocking housing has a cubic structure, and the second interlocking housing faces the center of the end face of the first interlocking housing. There is a second shaft hole, the axial direction of the second shaft hole is parallel to the axial direction of the transmission shaft, the second linkage shaft is matched with the second shaft hole, and the second linkage shaft can rotate around its own axis. The connecting plate One end of the second is hinged with the power driving end of the first linkage shaft, and the core line of the hinge shaft is parallel to the axial direction of the transmission shaft, and the other end is hinged with the power receiving end of the second linkage shaft, and the core line of the hinge shaft is parallel to the axial direction of the transmission shaft. The movement of the first linkage shaft drives the second connecting plate to deflect and makes the second linkage shaft move. The second movement of the linkage shaft can be divided into axial movement along the axle and rotation around its own axis. The second movable shell performs synchronous movement;

The second connecting rod is fixedly connected with the second linkage housing, and when the second linkage casing moves along the axial direction of the axle, the second connecting rod can be pulled to move synchronously with it;

One end of the push rod is connected with the sealing plug, and the other end is connected with the linkage housing II. When the linkage housing II moves axially along the axle, the push rod can be pulled to move synchronously with it, and the push rod moves and drives the sealing plug along the axis. The extension direction of the cavity of the pump body slides.

As a further improvement of this technical solution.

The number of the above-mentioned liquid spraying devices is two, and the two liquid spraying devices are respectively arranged on one side of the vehicle body. The water tank includes a water tank body and a three-way pipe. The water tank body is used to store the liquid to be sprayed. The through pipe includes two liquid outlet ports and one liquid inlet port. The first guide pipes in the two liquid spraying devices are respectively connected to one liquid outlet port of the three-way pipe, and the water tank body is connected to the liquid inlet port of the three-way pipe. The liquid in the water tank body enters the liquid spraying devices located on both sides of the vehicle body through the three-way pipe;

The number of the above-mentioned spraying range adjusting devices is two and the two spraying range adjusting devices and their corresponding liquid spraying devices are located on the same side of the vehicle body.

Compared with the prior art, the present invention has the beneficial effects that the spraying range of the spray head in the present invention can be adjusted at any time, and the present invention obtains power by moving the vehicle body, thereby reducing the labor intensity of operators.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will describe the technical solutions in the embodiments.

The accompanying drawings that need to be used are briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. These figures lead to other figures.

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is a cross-sectional view of the present invention.

FIG. 3 is a schematic structural diagram of the power transmission device of the present invention.

FIG. 4 is a schematic structural diagram of a linkage member 1 of the present invention.

FIG. 5 is a schematic structural diagram of the second linkage member of the present invention.

FIG. 6 is a schematic structural diagram of the liquid spraying device of the present invention.

7 is a cross-sectional view of the water pump mechanism of the present invention.

FIG. 8 is a schematic structural diagram of the telescopic guide tube of the present invention.

9 is a cross-sectional view of the one-way control mechanism of the present invention.

FIG. 10 is a schematic structural diagram of the spraying range adjusting device of the present invention.

FIG. 11 is a schematic structural diagram of the spraying range adjusting device of the present invention.

FIG. 12 is a schematic structural diagram of the height adjusting device of the present invention.

FIG. 13 is a schematic diagram of the cooperation between the trigger locking mechanism of the present invention and the main slide rail.

FIG. 14 is a schematic structural diagram of the trigger locking mechanism of the present invention.

FIG. 15 is a schematic structural diagram of the locking housing of the present invention.

FIG. 16 is a schematic structural diagram of the length adjusting device of the present invention.

FIG. 17 is a schematic structural diagram of the closing mechanism of the present invention.

Figure 18 is a cross-sectional view of the closure mechanism of the present invention.

FIG. 19 is a schematic structural diagram of the housing of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely explained below with reference to the accompanying drawings in the embodiments of the present invention.

To be completely described, it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Fig. 1-19, the special equipment for protecting crops or fruit tree seedlings includes a vehicle body 100, a water tank, a liquid spraying device 400, a power transmission device, and a spraying range adjustment device. When the vehicle body 100 moves, a rotational force is generated. The rotating force provides spraying power for the liquid spraying device 400, and at the same time, the rotating force also provides adjustment power for the spraying range adjustment device, and the power transmission device is used for receiving the rotating force and transmitting the rotating force to the liquid spraying device 400 and the spraying range adjustment device. The water tank is installed on the vehicle body 100 and is used to provide spraying liquid for the liquid spraying device 400. The liquid spraying device 400 sprays the liquid outward under the action of spraying power, and the spraying range adjusting device adjusts the spraying range of the liquid spraying device 400 under the action of the power. Make adjustments.

The vehicle body 100 includes a vehicle frame 110 and an axle 120. The water tank, the liquid spray device 400, the power transmission device, and the spray range adjustment device are all installed on the vehicle frame 110. When the vehicle body 100 moves, the vehicle axle 120 rotates and rotates. generate rotational force.

As shown in FIGS. 1 and 6 , the number of the above-mentioned liquid spraying devices 400 is two, and the two liquid spraying devices 400 are respectively arranged on one side of the vehicle body 100 , and the water tank includes a water tank body and a three-way pipe, The body of the water tank is used to store the liquid to be sprayed. Preferably, the liquid to be sprayed is a chemical agent for protecting crops and landscaping seedlings. The three-way pipe includes two liquid outlet ports, one liquid inlet port, and two liquid The spraying devices 400 are respectively connected to a liquid outlet port of the three-way pipe, the water tank body is connected to the liquid inlet port of the three-way pipe, and the liquid in the water tank body enters the liquid spraying devices 400 located on both sides of the vehicle body 100 through the three-way pipe respectively. middle.

As shown in FIG. 6 , the above-mentioned liquid spraying device 400 includes a liquid diversion system 410, a water pump mechanism 420, and a spray head 430. The liquid diversion system 410 is used to transport the liquid in the water tank body to the water pump mechanism 420. The water pump mechanism 420 It is used to deliver the liquid into the spray head 430, and the spray head 430 is used to spray the liquid outward.

More optimally, in order to ensure that the liquid contained in the water tank body maintains a constant water pressure, so as to achieve the best effect of spraying outward, a pressurizing device for pressurization is also provided in the water tank body. Preferably, the pressurizing device is: pressure pump.

As shown in FIG. 7 , the above-mentioned water pump mechanism 420 includes a pump body 421, a sealing plug 425, and a push rod 424. The pump body 421 is a cylindrical cylindrical structure with openings at both ends, and an opening of the pump body 421 is provided with a The connecting nozzle 423 connected to the inner cavity, the outer circular surface of the pump body 421 is provided with an interface 422 that is connected to its inner cavity, and the connection between the interface 422 and the liquid guiding system 410 is provided for controlling the liquid from the tank body to the pump body. 421 one-way flow one-way valve, the sealing plug 425 is arranged in the inner cavity of the pump body 421 and the two form a sealing sliding fit, one end of the push rod 424 is connected with the sealing plug 425, and the other end is connected with the sealing plug 425. The power transmission device is connected. The power transmission device receives the rotational force generated by the rotation of the axle 120 and transmits it to the push rod 424. The push rod 424 drives the sealing plug 425 to slide along the extension direction of the inner cavity of the pump body 421 under the action of the power. The area between the sealing plug 425 , the inner cavity of the pump body 421 , and the connecting nozzle 423 constitutes the inner cavity of the liquid. Discharge; the process that the liquid is discharged through the connecting nozzle 423 is embodied as: the push rod 424 drives the sealing plug 425 to move away from the connecting nozzle 423 in the pump body 421, and the volume of the inner cavity of the liquid increases and the liquid passes through the interface 422. Entering the inner cavity of the liquid, the push rod 424 drives the sealing plug 425 to move close to the connecting nozzle 423 in the pump body 421. At this time, the volume of the inner cavity of the liquid is reduced, because the interface 422 and the liquid guiding system are set at the connection With a one-way valve, the fluid cannot flow back, resulting in an increase in the pressure of the liquid-containing cavity, and the liquid in the liquid-containing cavity is discharged through the connecting nozzle 423 .

As shown in FIG. 6 , the above-mentioned liquid diversion system 410 includes a first diversion tube 411 , a second diversion tube 412 , a diversion hose 413 , and a telescopic diversion tube 414 . One end of the first diversion tube 411 is connected to three The liquid outlet port of the through pipe is connected and connected, the other end is connected with the interface 422 of the pump body 421, one end of the second guide pipe 412 is connected with the connecting nozzle 423 of the pump body 421, and the other end is connected with the guide hose One end of 413 is connected and connected, the other end of the guide hose 413 is connected with the telescopic guide pipe 414, the nozzle 430 is connected with the telescopic guide pipe 414, and the first guide pipe 411 is connected A closing switch 415 is provided for controlling the switching between the ON state and the closed state of the first guide pipe 411, and the second guide pipe 412 is provided with a unidirectional flow control device for controlling the unidirectional flow of the liquid from the pump body 421 to the spray head 430. For the control mechanism, the one-way valve is disposed at the connection between the first guide pipe 411 and the interface 422, and the structure of the one-way valve and the one-way control mechanism are consistent.

As shown in FIG. 9 , the above-mentioned second guide tube 412 includes a lower guide tube 412a and an upper guide tube 412b. The lower guide tube 412a is connected to the connecting nozzle 423 of the pump body 421, and the upper guide tube 412b is sleeved Connected to the inside of the lower guide tube 412a, the one-way control mechanism is arranged at the connection between the lower guide tube 412a and the upper guide tube 412b.

More specifically, the lower guide tube 412a is provided with a built-in step 412c and the center of the built-in step 412c is a water hole. The one-way control mechanism includes a liquid stop ball 412d, a trigger spring 412e, a liquid stop ball. 412d is arranged above the water passage hole and matches with the water passage hole, one end of the trigger spring 412e is in conflict with the liquid stop ball 412d, and the other end is in conflict with the upper guide tube 412b, and the elastic force of the trigger spring 412e makes the liquid stop ball 412d guide down. The axial direction of the flow pipe 412a moves close to the water through hole; the process of the one-way flow of the liquid is specifically as follows: when the liquid in the pump body 421 enters the lower guide pipe 412a, the pressure of the liquid pushes the liquid stop ball 412d and releases the Overcoming the elastic contraction of the trigger spring 412e, the liquid stop ball 412d is far away from the water hole, and the liquid can enter the lower guide tube 412a through the water hole, while the trigger spring 412e is in a compressed state, when the liquid in the pump body 421 stops entering the lower guide When inside the tube 412a, the elastic force of the trigger spring 412e makes the liquid stop ball 412d move close to the water passage hole, and the two form a sealed fit, so that the liquid in the lower guide tube 412a cannot flow back.

As shown in FIG. 8 , the above-mentioned telescopic guide tube 414 is a telescopic rod-shaped structure formed by a plurality of telescopic sections that are sleeved in sequence, and the two telescopic sections of the sleeve can move relative to each other along the length direction. There are three sections in total, namely, the first telescopic section 414a, the second telescopic section 414b, and the third telescopic section 414c. One end of the opening is connected to the diversion hose 413, the second expansion joint 414b is sleeved on the other end opening of the first expansion joint 414a, and the third expansion joint 414c is a cylindrical structure with one end open and the other end closed. The third telescopic section 414c is sleeved inside the second telescopic section 414b and the socket end of the third telescopic section 414c is the open end. The sprinkler head 430.

As shown in FIGS. 1-2 and 10 , the number of the above-mentioned spray range adjustment devices is two, and the two spray range adjustment devices and their corresponding liquid spray devices 400 are located on the same side of the vehicle body 100 .

The spray range adjustment device includes a height adjustment device 500 and a length adjustment device 600 .

As shown in FIGS. 10-11 , the above-mentioned height adjusting device 500 includes a first connecting rod 510, and the first connecting rod 510 is connected with the power transmission device, and the above-mentioned length adjusting device 600 includes a second connecting rod 610, and the second connecting rod 610 is connected with the power transmission device In connection, the power transmission device receives the rotational force generated by the rotation of the axle 120 and transmits it to the first link 510 and the second link 610 .

As shown in FIGS. 3-5 , the above-mentioned power transmission device includes a power transmission mechanism 200 and a linking member 300 . The linking member 300 includes a first linking member 310 and a second linking member 320 . The first linking member 310 and The power transmission mechanism 200 is connected, the linkage member 2 320 is connected with the linkage member 1 310, the linkage member 1 510 is connected with the linkage member 1 310, the linkage member 2 610 is connected with the linkage member 2 320, and the rotation of the axle 120 generates The power is transmitted to the link member 1 310 through the power transmission mechanism 200, and is transmitted to the link member 1 510 by the link member 1 310. At the same time, the link member 1 310 also transmits power to the link member 2 320. 320 is passed to link two 610.

As shown in FIG. 3 , the above-mentioned power transmission mechanism 200 includes a transmission shaft 210 and a gear transmission mechanism. The transmission shaft 210 is arranged horizontally and the axial direction of the transmission shaft 210 is perpendicular to the axial direction of the axle 120 . Preferably, the gear transmission mechanism It is a helical gear transmission mechanism. The helical gear transmission mechanism includes a driving helical gear 220 and a driven helical gear 230. The driving helical gear 220 is sleeved on the outside of the axle 120, and the driven helical gear 230 is sleeved on the outside of the transmission shaft 210. The gear 220 is meshed with the driven helical gear 230; the helical gear transmission mechanism is used to make the power transmission reverse 90 degrees, and the rotational force generated by the rotation of the axle 120 is transmitted to the transmission shaft 210 through the helical gear transmission mechanism and rotates the transmission shaft 210.

As shown in FIG. 4 , the above-mentioned linkage member 1 310 includes a turntable 1 311, a connecting plate 1 312, a linkage shaft 1 313, and a linkage housing 1 314. The linkage casing 1 314 is a A shaft hole 1 is provided at the center of the end face of the moving housing 1 314 toward the transmission shaft 210 , the axial direction of the shaft hole 1 is parallel to the axial direction of the transmission shaft 210 , and the interlocking shaft 1 313 is matched with the shaft hole 1 and The interlocking shaft 1 313 can rotate around its own axis. The turntable 1 311 is fixedly connected to the transmission shaft 210 and the two are arranged coaxially. The rotation of the transmission shaft 210 drives the turntable 1 to rotate. One end of the connecting plate 312 It is hinged with the turntable one 311, and the hinge is offset from the center of the turntable one 311, and the hinge axis is parallel to the axial direction of the transmission shaft 210. The other end of the connecting plate one 312 is hinged with the power receiving end of the connecting shaft one 313 and the hinge shaft The core wire is parallel to the axial direction of the transmission shaft 210 , the rotation of the turntable 1 311 drives the connecting plate 1 312 to deflect and the linkage shaft 1 313 moves.

The linkage member one 310 further includes a support plate and a guide column 315. The support plate is fixedly installed on the vehicle frame 110 and the support plate is located under the linkage housing one 314. The guide column 315 is fixedly installed on the support plate and the guide column 315 The guiding direction is perpendicular to the ground, the linkage housing one 314 is also provided with a guide hole that matches the guide column 315, and the linkage housing one 314 is installed on the guide column 315 through the guide hole and the guide column 315. The deflection of the connecting plate 1 312 drives the movement of the linkage shaft 1 313. The movement of the linkage shaft 1 313 can be divided into sliding up and down along the guiding direction of the guide column 315 and rotating around its own axis. Sliding up and down can drive the linkage housing 1 314 to slide up and down along the guiding direction of the guide post 315 .

The first connecting rod 510 is fixedly connected with the first linkage housing 314 . When the first linkage casing 314 slides up and down along the guiding direction of the guide column 315 , the first connecting rod 510 can be pulled to move synchronously with it.

As shown in FIG. 5 , the second interlocking member 320 includes a second connecting plate 321 , a second interlocking shaft 322 , and a second interlocking housing 323 . The second interlocking housing 323 has a cubic structure, and the second interlocking housing 323 is provided with a shaft hole 2 at the center of the end face of the interlocking housing 1 314, the axial direction of the shaft hole 2 is parallel to the axial direction of the transmission shaft 210, and the interlocking shaft 2 322 matches and connects with the shaft hole 2. The second moving shaft 322 can rotate around its own axis. One end of the second connecting plate 321 is hinged with the power driving end of the first connecting shaft 313 and the core line of the hinge shaft is parallel to the axial direction of the transmission shaft 210, and the other end is connected to the connecting shaft. The power receiving end of the second 322 is hinged and the core line of the hinge shaft is parallel to the axial direction of the transmission shaft 210. The movement of the first link shaft 313 drives the connecting plate 2 321 to deflect and makes the second link shaft 322 move. The movement of the second link shaft 322 can be divided into two parts. In order to move axially along the axle 120 and rotate around its own axis, the second linkage shaft 322 moves axially along the axle 120 to drive the second linkage housing 323 to move synchronously.

The second connecting rod 610 is fixedly connected with the second linkage housing 323 , and when the second linkage casing 323 moves axially along the axle 120 , the second connecting rod 610 can be pulled to move synchronously with it.

One end of the push rod 424 is connected with the sealing plug 425, and the other end is connected with the linkage housing II 323. When the linkage housing II 323 moves axially along the axle 120, the push rod 424 can be pulled to move synchronously with it. 424 moves and drives the sealing plug 425 to slide along the extending direction of the inner cavity of the pump body 421 .

More optimally, the linkage member 2 320 further includes a connecting plate 3, a turntable 2 324, and a support shaft 325. The support shaft 325 is movably installed on the frame 110 and can rotate around its own axis. The transmission shaft 210 is arranged coaxially, the second turntable 324 is fixedly connected to the support shaft 325 and the two are arranged coaxially, one end of the third connecting plate is hinged with the power drive end of the second connecting shaft 322 and the hinge shaft The core line is parallel to the axial direction of the transmission shaft 210, the other end of the connecting plate 3 is hinged with the second turntable 324, and the hinged part is deviated from the center of the turntable 2 324, and the core line of the hinge shaft is parallel to the axial direction of the transmission shaft 210, the connecting shaft 2 The movement of 322 drives the third deflection of the connecting plate and makes the second turntable 324 rotate, and the rotation of the second turntable 324 drives the support shaft 325 to rotate.

As shown in FIGS. 11-15 , the above-mentioned height adjusting device 500 further includes a pushing mechanism 520, a sliding member 530, and a main sliding rail 540. The main sliding rail 540 is installed on the vehicle frame 110 and the guiding direction of the main sliding rail 540 is perpendicular to the ground. The telescopic guide tube 414 is installed on the sliding member 530. Specifically, the telescopic section 414a of the telescopic guide tube 414 is fixedly installed on the sliding member 530. The sliding member 530 is arranged in the main slide rail 540. The sliding rails 540 are matched and the sliding member 530 can slide along the guiding direction of the main sliding rail 540. When the sliding member 530 is displaced along the guiding direction of the main sliding rail 540, the retractable guide tube 414 can be pulled to move synchronously with it (that is, the pulling nozzle 430 The first link 510 is in contact with the push mechanism 520, and the push mechanism 520 is in contact with the sliding member 530. When the link one 510 moves, the push mechanism 520 is pushed to move along the guiding direction of the main slide rail 540, thereby making the sliding The member 530 moves along the guiding direction of the main slide rail 540, and finally the height of the spray head 430 changes.

As shown in FIG. 12 , the above-mentioned sliding member 530 includes a lower fixing plate 531 and an upper fixing plate 532 , and the expansion joint 1 414a is fixedly installed between the lower fixing plate 531 and the upper fixing plate 532 . The lower fixing plate 531 is in contact with the pushing mechanism 520; the pushing mechanism 520 pushes the lower fixing plate 531 to move along the guiding direction of the main slide rail 540, thereby changing the height of the spray head 430.

As shown in FIG. 12 , the above-mentioned pushing mechanism 520 includes a pushing plate 521 . The top surface of the pushing plate 521 is in contact with the lower fixing plate 531 . The surface of the pushing plate 521 facing the connecting rod 1 510 is provided with a number of along the height direction of the pushing plate 521 . The guide columns 522 are evenly spaced. One end of the connecting rod 1 510 is fixedly connected to the linkage housing 1 314, and the other end is the push end and is located between the two adjacent guide columns 522. The connecting rod 1 510 moves and When the guide post 522 moves up and down along the guiding direction of the main slide rail 540 , the push plate 521 can be pulled to move synchronously; when the guide post 522 moves upward along the guide direction of the guide post 315 , the push plate 521 pushes the lower fixing plate 531 along the guide post 315 When the guide column 522 moves downward along the guide direction of the guide column 315, the push plate 521 pushes the lower fixing plate 531 to slide down along the guide direction of the guide column 315, and the spray head 430 The spray height is reduced.

As shown in FIGS. 12-15 , the above-mentioned height adjusting device 500 further includes a trigger locking mechanism 550 arranged in the main slide rail 540 , and the motion state of the trigger locking mechanism 550 can be divided into a trigger state and a locked state. When the locking mechanism 550 is in the triggered state, the pushing end of the first link 510 is located between the two adjacent guide columns 552. At this time, the link one 510 moves and pulls the guide column 552 to move synchronously with it. When the trigger locking mechanism 550 is in the locked state. In the tight state, triggering the locking mechanism 550 can disengage the pushing end of the connecting rod 510 from the guide post 522, and lock the pushing mechanism 520 to keep its height unchanged, so that the spraying height of the spray head 430 is fixed. .

As shown in Figures 13-15, the above-mentioned trigger locking mechanism 550 includes a locking member and a locking housing 553. The locking member is arranged in the locking housing 553. When the spray head 430 is at the optimum spraying height, it can pass through the The locking member locks the height of the pushing mechanism 520 and keeps the height thereof unchanged.

As shown in FIG. 14, the above-mentioned locking member includes a connecting rod 551, a locking rod 552, a plurality of locking holes 541 arranged on the main slide rail 540 and distributed at even intervals along the guiding direction of the main slide rail 540, and the connecting rod 551 is used to connect the locking rod 552 and the push plate 521. The locking rod 552 matches the locking hole 541 and the locking rod 552 and the locking hole 541 are located on the same line parallel to the guiding direction of the main slide rail 540. When the locking rod 552 is located in the locking hole 541 , the trigger locking mechanism 550 is in a locked state, and when the locking rod 552 is separated from the locking hole 541 , the trigger locking mechanism 550 is in a triggered state.

As shown in Figures 14-15, the locking housing 553 is a cylindrical cylindrical structure with one end open and the other end closed. The outer surface of the locking housing 553 is provided with a chute penetrating its wall thickness. The connecting rod 551 is located in the chute and can slide along the guide direction of the chute. The chute can be divided into three parts and are respectively a locking slot 553a, a guide slot 553b, a trigger slot 553c, and one end of the guide slot 553b is connected to the lock slot 553a. The tightening groove 553a is connected, the other end is connected with the triggering groove 553c, and the guide groove one 553b and the locking groove 553a and between the guide groove one 553b and the trigger groove 553c are arranged at an angle, and the guide groove one 553b is used to connect the connection The rod 551 is guided into the locking groove 553a or the triggering groove 553c.

More specifically, the locking slot 553a, the first guide slot 553b, and the trigger slot 553c are all arc-shaped slots, and the three form an S-shaped structure. The slot 553a or the trigger slot 553c completes a smooth transition, and a sliding member is provided between the push plate 521 and the lower fixing plate 531. The trigger slider on 531 and matched with the trigger slide rail, the guide direction of the trigger slide rail is perpendicular to the guide direction of the main slide rail 540, and the push plate 521 can cooperate with the trigger slide rail through the trigger slide rail along the guide direction of the trigger slide rail. To move closer to or away from the connecting rod 1 510, more optimally, a knob that can drive it to rotate is installed on the locking housing 553; the state switching process of the locking mechanism 550 is triggered, which is embodied as: rotating the knob and making the lock The tightening housing 553 rotates, and the connecting rod 551 is guided into the locking groove 553a by the guide groove one 553b. During this process, the connecting rod 551 drives the push plate 521 to move away from the connecting rod one 510, and the pushing end of the connecting rod one 510 is in contact with the connecting rod one 510. The guide post 522 is out of contact, and at the same time, the connecting rod 551 drives the locking rod 552 to move close to the locking hole 541 and the locking rod 552 is located in the locking hole 541, triggering the locking mechanism 550 to be in the locked state, turn the knob in the opposite direction and The locking housing 553 is rotated in the opposite direction, the connecting rod 551 is guided by the guiding groove 1 553b into the triggering groove 553c, the connecting rod 551 drives the pushing plate 521 to move close to the connecting rod 510, and the pushing end of the connecting rod 1 510 is located in the opposite direction. Adjacent between the two guide posts 522, the connecting rod 551 drives the locking rod 552 to move away from the locking hole 541 and the locking rod 552 is separated from the locking hole 541, and the trigger locking mechanism 550 is in the trigger state.

As shown in FIGS. 16-19 , the above-mentioned length adjusting device 600 further includes a rack and pinion transmission mechanism 1 620 , a bevel gear transmission mechanism 1 630 , a bevel gear transmission mechanism 2 640 , and a rack and pinion transmission mechanism 2 650 . One end of the rod 2 610 is fixedly connected with the linkage housing 2 323, and the other end is connected with the rack and pinion transmission mechanism 1 620. The telescopic guide tube 414 is connected with the rack and pinion transmission mechanism 2 650, and the connecting rod 2 610 moves The generated power is transmitted to the telescopic guide tube 414 through the rack and pinion transmission mechanism one 620, the bevel gear transmission mechanism one 630, the bevel gear transmission mechanism two 640, and the rack and pinion transmission mechanism two 650, and the telescopic guide pipe 414 is under the action of power. Extend or contract, thereby changing the horizontal spray length of the spray head 430.

As shown in FIG. 16 , the rack and pinion transmission mechanism 1 620 includes a rack 1, a gear 1, an intermediate rotating shaft 1, and a support frame. The axial direction of the intermediate rotating shaft 1 is parallel to the axial direction of the transmission rotating shaft 210. The extension direction is parallel to the axial direction of the axle 120, the support frame is fixedly installed on the frame 110, the first rack is movably installed on the support frame, and a sliding part 1 is arranged between the first rack and the support frame, preferably, the first sliding part is set The slider 1 on the rack 1, the slide rail 1 which is arranged on the support frame and matches with the slider 1, the guiding direction of the sliding rail 1 is parallel to the axial direction of the axle 120, and the rack 1 can be connected with the slider 1 through the slider 1. The sliding rail 1 moves along the guiding direction of the sliding rail 1, the gear is sleeved on the outside of the power input shaft end of the intermediate shaft 1 and meshes with the rack 1, the connecting rod 2 610 is fixedly connected with the rack 1, and the connecting rod When the 2 610 moves, it can pull the rack to move synchronously, and make the gear rotate, and the gear rotates to drive the intermediate shaft to rotate.

The bevel gear transmission mechanism 1 630 includes a bevel gear a, a bevel gear b, an intermediate shaft 2, the axial direction of the intermediate shaft 2 is parallel to the axial direction of the axle 120, and the bevel gear a is sleeved on the power output shaft end of the intermediate shaft 1. Externally, the bevel gear b is sleeved on the outside of the power input shaft end of the intermediate shaft 2 and meshes with the bevel gear a. Once the intermediate shaft rotates, the intermediate shaft 2 is rotated through the bevel gear a and the bevel gear b; the bevel gear transmission mechanism 1 630 can The direction of power transmission is deflected by 90 degrees.

The bevel gear transmission mechanism 2 640 includes a bevel gear c, a bevel gear d, an intermediate rotating shaft 3, and an intermediate rotating shaft 4 641. The axial direction of the intermediate rotating shaft 4 641 is parallel to the guiding direction of the main slide rail 540, and the intermediate rotating shaft 3 is connected to the intermediate rotating shaft. The two are arranged coaxially and a coupling is arranged between them. The power output shaft end of the second intermediate shaft is connected with the power input shaft end of the coupling one, and the power output shaft end of the coupling one is connected with the intermediate shaft three. The power input shaft end is connected, the middle shaft 2 rotates and the middle shaft 3 rotates through the coupling 1, the bevel gear c is sleeved on the outside of the power output shaft end of the middle shaft 3, and the bevel gear d is sleeved with the power of the middle shaft 4 641 The end of the input shaft is outside and meshes with the bevel gear c, the intermediate rotating shaft 3 rotates and the intermediate rotating shaft 4 641 rotates through the bevel gear c and the bevel gear d; the bevel gear transmission mechanism 2 640 can deflect the power transmission direction by 90 degrees.

The rack and pinion transmission mechanism 2 650 includes a rack 2 651, a gear 2, and an intermediate shaft 5. The intermediate shaft 5 and the intermediate shaft 4 641 are coaxially arranged with a coupling between the two, and the intermediate shaft 4 641. The power output shaft end of the second coupling is connected with the power input shaft end of the coupling two, and the power output shaft end of the coupling two is connected with the power input shaft end of the intermediate shaft five. The fifth rotating shaft rotates, the second rack 651 is arranged between the upper fixing plate 532 and the lower fixing plate 531 and the extending direction of the second rack 651 is parallel to the extending direction of the first rack, and the second rack 651 and the lower fixing plate 531 are arranged between There are two sliding parts. Preferably, the second sliding part is the second sliding block arranged on the second rack 651 and the second sliding rail which is arranged on the lower fixing plate 531 and matches with the second sliding block. The guiding direction of the second sliding rail is parallel to the second sliding block. In the guide direction of the first slide rail, the second rack 651 can move along the guide direction of the second slide rail through the cooperation of the second slide block and the second slide rail, and the second rack 651 is fixedly connected with the telescopic guide tube 414. Specifically, the telescopic guide The closed end of the telescopic section 3 414c of the tube 414 is fixedly connected with the power output end of the rack 2 651, the gear 2 is sleeved on the outside of the power output shaft end of the intermediate shaft 5, and the gear 2 meshes with the rack 2 651, and the intermediate shaft 5 rotates And through the second gear and the second rack 651, the telescopic guide tube 414 is elongated or contracted; the expansion or contraction process of the telescopic guide tube 414 is embodied as: when the second linkage housing 323 moves axially along the axle 120, it can be The traction link 2 610 moves synchronously with it. When the link 2 610 drives the rack 1 to move close to the transmission shaft 210, the rack 1 meshes with the gear 1 and makes the gear 1 drive the intermediate shaft to rotate, and the intermediate shaft rotates and passes through Bevel gear transmission mechanism 1 630, coupling 1, bevel gear transmission mechanism 2 640, coupling 2, intermediate shaft 5, gear 2 make the rack 2 651 move close to the transmission shaft 210, and the movement of the rack 2 651 drives the expansion and contraction The third section 414c moves synchronously, so that the telescopic guide tube 414 shrinks. When the second connecting rod 610 drives the rack one to move away from the transmission shaft 210, the second rack 651 moves away from the transmission shaft 210 and drives the telescopic section three 414c makes a synchronous movement, thereby extending the telescopic guide tube 414.

As shown in FIGS. 16-19 , the above-mentioned length adjusting device 600 further includes a closing mechanism 660 , and the closing mechanism 660 is used to make the bevel gear c and the bevel gear d in the second bevel gear transmission mechanism 640 between the meshing state or the disengaging state. Switch; when the bevel gear c and the bevel gear d are in meshing state, the second rack 651 can drive the telescopic guide tube 414 to extend or contract; when the horizontal spray length of the spray head 430 is at the optimum spray length, the closing mechanism 660 can The bevel gear c and the bevel gear d are in a disengaged state, so that the second rack 651 cannot drive the telescopic guide tube 414 to extend or contract, and finally the spraying length of the nozzle 430 is fixed.

As shown in FIGS. 17-19 , the above-mentioned closing mechanism 660 includes a movable bracket 662 and a handle, the bevel gear d and the intermediate shaft 4 641 are connected by a connecting piece, and the bevel gear d can be along the axial direction of the intermediate shaft 4 641 Movement, preferably, the connecting piece is an external spline arranged on the intermediate shaft 4 641, an inner spline arranged on the bevel gear d, the movable bracket 662 includes an upper bracket and a lower bracket, and the upper bracket and the lower bracket are One-piece structure, the upper bracket is provided with a sleeve hole 1 that matches the intermediate shaft 4 641, the upper bracket is movably sleeved on the outside of the intermediate shaft 4 641 through the sleeve hole 1, and the upper bracket is located above the bevel gear d, and the lower bracket is provided with the middle. The sleeve hole 2 matched with the rotating shaft 4 641, the lower bracket is movably sleeved on the outside of the intermediate rotating shaft 4 641 through the sleeve hole 2, and the lower bracket is located below the bevel gear d. When the movable bracket 662 is displaced along the axial direction of the intermediate rotating shaft 4 641, The bevel gear b can be pulled to move synchronously with it. The handle includes a rocker 661a and an intermediate rod 661b. One end of the intermediate rod 661b is hinged with the movable bracket 662 and the hinge axis is parallel to the axial direction of the intermediate rotating shaft 641, and the other end is connected to the movable bracket 662. The rocker 661a is fixedly connected, and when the rocker 661a is axially displaced along the intermediate shaft 4641, the movable bracket 662 can be pulled by the intermediate rod 661b to move synchronously.

As shown in FIGS. 17 and 19 , the above-mentioned closing mechanism 660 further includes a casing 663 in a cubic structure, the bevel gear c, the bevel gear d, the power output shaft end of the third intermediate shaft and the power input shaft of the intermediate rotating shaft 4 641 Both ends are located in the casing 663, the casing 663 is provided with a limit guide groove, the intermediate rod 661b is located in the limit guide groove, the rocker 661a is located outside the casing 663, and the limit guide groove is divided into three Part of the guide groove 1 663a, the guide groove 2 663b, and the limit groove 2 663c, one end of the guide groove 2 663b is connected with the limit groove 1 663a, and the other end is connected with the limit groove 2 663c, and the guide groove 2 663b is used to guide the middle rod 661b to the first limit slot 663a or the second limit slot 663c. When the middle rod 661b is located in the second limit slot 663c, the bevel gear c and the bevel gear d are in meshing state, when the middle rod 661b When located in the first limiting groove 663a, the bevel gear c and the bevel gear d are in a disengaged state.

More specifically, the first limit slot 663a and the second limit slot 663c are arranged horizontally, the first limit slot 663a is located above the second limit slot 663c, the second guide slot 663b is arranged vertically, and the limit slot The first 663a, the second guide slot 663b, and the second limit slot 663c form a Z-shaped structure; the state switching process of the bevel gear c and the bevel gear d is embodied as: moving the rocker 661a and making the intermediate rod 661b be guided by the second guide slot 663b to the In the limit slot 2 663c, during this process, the bevel gear d moves close to the bevel gear c until the bevel gear d meshes with the bevel gear c, the rack 2 651 can drive the telescopic guide tube 414 to extend or contract, and when the nozzle When the 430 is at the optimum spraying length, move the rocker 661a and make the middle rod 661b guide the second guide slot 663b to the limit slot 1 663a. During this process, the bevel gear d moves away from the bevel gear c until the bevel gear d When disengaged from the bevel gear c, the second rack 651 cannot drive the telescopic guide tube 414 to extend or contract, so that the spraying length of the spray head 430 is fixed.

When the spraying device is working, open and close the switch 415, and at the same time move the vehicle body 100 to rotate the axle 120, and the rotation of the axle 120 generates a rotational force, which is transmitted to the transmission shaft 210 through the helical gear transmission mechanism and causes the transmission shaft 210 to rotate, and the transmission shaft 210 Rotate and drive the push rod 424 to move through the linkage member 300. The movement of the push rod 424 changes the volume of the liquid-containing cavity of the pump body 421. The specific performance is as follows: the push rod 424 drives the sealing plug 425 to move away from the connecting nozzle in the pump body 421. 423 moves, at this time the volume of the liquid-containing cavity increases, the liquid in the water tank body flows into the pump body 421 through the tee pipe, the first guide pipe 411 and the interface 422, and the push rod 424 drives the sealing plug 425 in the pump. The body 421 moves close to the connecting nozzle 423, and the volume of the liquid-containing cavity is reduced at this time. Since the connection between the interface 422 and the liquid diversion system is provided with a one-way valve, the fluid cannot flow back, resulting in the pressure of the liquid-containing cavity. increase, so as to discharge the liquid in the liquid-containing cavity, and the liquid in the liquid-containing cavity flows into the nozzle 430 through the connecting nozzle 423, the second guide tube 412, the guide hose 413, and the telescopic guide tube 414, and the liquid flows into the nozzle 430. The spray head 430 is sprayed outward, because the second guide pipe 412 is provided with a one-way control mechanism for controlling the one-way flow of the liquid from the pump body 421 to the spray head 430, so the liquid will not flow back.

When the linkage member 300 drives the push rod 424 to move, the spray range adjustment device starts to operate, and the operation process of the spray range adjustment device is divided into a height adjustment process and a horizontal length adjustment process.

The height adjustment process is embodied as follows: when the interlocking member 300 drives the push rod 424 to move, the interlocking member 300 also pulls the connecting rod 1 510 to move synchronously with it, rotates the knob and causes the locking housing 553 to rotate, and the connecting rod 551 is guided by The first slot 553b is guided into the trigger slot 553c. During this process, the connecting rod 551 drives the push plate 521 to move close to the connecting rod 1 510 and the pushing end of the connecting rod 1 510 is located between the two adjacent guide columns 522. At the same time, the connecting rod 551 drives the locking rod 552 to move away from the locking hole 541 and the locking rod 552 is separated from the locking hole 541, and the trigger locking mechanism 550 is in a triggered state. 521 moves synchronously, the push plate 521 pushes the lower fixed plate 531 to move synchronously, thereby changing the height of the spray head 430, when the spray head 430 is at the optimum spray height, turn the knob in the opposite direction and make the locking shell 553 rotate in the opposite direction, and the connecting rod 551 The guide groove 1 553b is guided into the locking groove 553a. During this process, the connecting rod 551 drives the push plate 521 to move away from the connecting rod 1 510 and the pushing end of the connecting rod 1 510 is out of contact with the guide post 522. At the same time, the connecting rod 551 drives the locking rod 552 to move close to the locking hole 541 and the locking rod 552 is located in the locking hole 541, triggering the locking mechanism 550 to be in a locked state, the height of the spray head 430 does not change and is at the optimum spraying height.

The horizontal length adjustment process is embodied as follows: when the link member 300 pulls the link one 510 to move synchronously with it, the link member 300 also pulls the link two 610 to move synchronously with it, moves the rocker 661a and makes the intermediate rod 661b move from the guide groove two 663b is guided to the limit slot 2 663c. During this process, the bevel gear d moves close to the bevel gear c until the bevel gear d meshes with the bevel gear c. At this time, the power generated by the movement of the connecting rod 2 610 passes through the rack and pinion. Transmission mechanism 1 620, bevel gear transmission mechanism 1 630, bevel gear transmission mechanism 2 640, rack and pinion transmission mechanism 2 650 are transmitted to the telescopic guide pipe 414, and the telescopic guide pipe 414 is extended or contracted under the action of power, so that the The horizontal spraying length of the sprinkler head 430 changes. When the sprinkler head 430 is at the optimum horizontal spraying length, the rocker 661a is moved and the middle rod 661b is guided by the guide groove two 663b to the limit groove one 663a. During this process, the bevel gear d Move away from the bevel gear c until the bevel gear d is disengaged from the bevel gear c, the telescopic guide tube 414 cannot receive the power of the second connecting rod 610, the length of the spray head 430 does not change and is at the optimum spraying length.

The method that crops or fruit tree seedlings are sprayed with protective medicinal liquids such as pesticides, the steps are:

(1) Liquid spraying process;

S1: Open and close the switch 415 so that the liquid in the water tank body flows into the liquid spraying device 400, and at the same time, the vehicle body 100 is moved to rotate the axle 120, and the rotation of the axle 120 generates a rotational force. The liquid spraying device 400 includes a liquid guiding system 410. , water pump mechanism 420, spray head 430, the water pump mechanism 420 includes a pump body 421, a sealing plug 425, a push rod 424, the pump body 421 is a cylindrical cylindrical structure with openings at both ends, and an opening of the pump body 421 is provided with The connecting nozzle 423 connected to the inner cavity, the outer surface of the pump body 421 is provided with an interface 422 that is connected to its inner cavity, the sealing plug 425 is arranged in the inner cavity of the pump body 421 and the two form a sealed sliding fit, the push rod One end of 424 is connected to the sealing plug 425, and the other end is connected to the power transmission device. The area between the sealing plug 425, the inner cavity of the pump body 421, and the connecting nozzle 423 constitutes the inner cavity of the liquid. The liquid guiding system 410 includes a first guide tube 411, a second guide tube 412, a guide hose 413, and a telescopic guide tube 414. One end of the first guide tube 411 is connected to the liquid outlet port of the tee, and the other end is connected. It is connected to the interface 422 of the pump body 421, one end of the second guide tube 412 is connected to the connecting nozzle 423 of the pump body 421, and the other end is connected to one end of the guide hose 413. The guide hose 413 The other end is connected to the telescopic guide pipe 414, the nozzle 430 is connected to the telescopic guide pipe 414, and the first guide pipe 411 is provided with a device for controlling the connection of the first guide pipe 411. The closed switch 415 for switching between the on state and the closed state, the second guide tube 412 is provided with a one-way control mechanism for controlling the one-way flow of the liquid from the pump body 421 to the spray head 430, the first guide tube The connection between 411 and the interface 422 is provided with a one-way valve for controlling the one-way flow of liquid from the tank body to the pump body, and the one-way valve has the same structure as the one-way control mechanism. The power transmission device receives the rotation of the axle 120. The rotating force is transmitted to the push rod 424, and the push rod 424 drives the sealing plug 425 to slide along the extension direction of the inner cavity of the pump body 421 under the action of power. When the nozzle 423 moves, the volume of the liquid-containing cavity increases, and the liquid in the water tank body flows into the pump body 421 through the tee pipe, the first guide pipe 411 and the interface 422. When the push rod 424 drives the sealing plug 425 in When the pump body 421 moves close to the connecting nozzle 423, the volume of the inner cavity of the liquid is reduced. Since the connection between the interface 422 and the liquid diversion system is provided with a one-way valve, the fluid cannot flow back, resulting in the pressure of the inner cavity of the liquid. increase, so as to discharge the liquid in the liquid-containing cavity, and the liquid in the liquid-containing cavity flows into the nozzle 430 through the connecting nozzle 423, the second guide tube 412, the guide hose 413, and the telescopic guide tube 414, and the liquid flows into the nozzle 430. Spray outward through the nozzle 430;

(2) The process of adjusting the spraying range;

S2: The power transmission device can also transmit rotational force to the spray range adjustment device. The spray range adjustment device includes a height adjustment device 500. The height adjustment device 500 includes a connecting rod 1 510, a pushing mechanism 520, a sliding The component 530, the main slide rail 540, the trigger locking mechanism 550, one end of the connecting rod 510 is connected to the power transmission device, and the power transmission device receives the rotational force generated by the rotation of the axle 120 and transmits it to the connecting rod one 510, The first link 510 moves up and down along the guiding direction of the main slide rail 540 under the action of power, the telescopic guide tube 414 is installed on the sliding member 530, the sliding member 530 is in contact with the pushing mechanism 520 and the sliding member 530 is in contact with the main sliding member 530. The slide rail 540 is matched, and the trigger locking mechanism 550 is rotated to make it in the trigger state. At this time, the other end of the link 1 510 is in contact with the push mechanism 520, and the movement of the link 1 510 can pull the push mechanism 520 to move synchronously with it. The movement of 520 can pull the sliding member 530 to move synchronously with it, and the movement of the sliding member 530 can pull the telescopic guide tube 414 to move synchronously with it, thereby changing the height of the spray head 430. It is in a locked state. At this time, the first link 510 is out of contact with the push mechanism 520, and the locking mechanism 550 is triggered to lock and restrict the push mechanism 520, so that the height of the spray head 430 is fixed, and the spray head 430 is in the best position. spray height;

S3: The spraying range adjustment device further includes a length adjustment device 600. The length adjustment device 600 includes a connecting rod 2 610, a rack and pinion transmission mechanism 1 620, a bevel gear transmission mechanism 1 630, and a bevel gear transmission mechanism 2 640 , the rack and pinion transmission mechanism 2 650, the closing mechanism 660, one end of the connecting rod 2 610 is connected with the power transmission device, and the other end is connected with the rack and pinion transmission mechanism 1 620, and the power transmission device receives the rotation generated by the rotation of the axle 120. The force is transmitted to the second connecting rod 650, and the second connecting rod 610 moves axially along the axle 120 under the action of the power. The bevel gear c and the bevel gear d in the bevel gear transmission mechanism 2 640 are in meshing state. At this time, the power generated by the movement of the connecting rod 2 610 passes through the rack and pinion transmission mechanism 1 620, the bevel gear transmission mechanism 1 630, and the bevel gear transmission mechanism. 2 640. The rack and pinion transmission mechanism 2 650 is transmitted to the telescopic guide pipe 414, and the telescopic guide pipe 414 is stretched or contracted under the action of power, so that the horizontal spraying length of the spray head 430 changes. When the spray head 430 is at the optimum level When spraying the length, the closing mechanism 660 is closed to disengage the bevel gear c and the bevel gear d in the bevel gear transmission mechanism 2 640. At this time, the telescopic guide tube 414 cannot accept the power of the connecting rod 2 610, and the length of the nozzle 430 is not Changed and at optimum spray length.

Specific examples are used in the present invention to illustrate the principles and implementations of the present invention.

The description is only used to help understand the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (8)

1. The special equipment for protecting the crops or the fruit tree seedlings is characterized by comprising a vehicle body, a water tank, a liquid spraying device, a power transmission device and a spraying range adjusting device, wherein the vehicle body generates a rotating force when moving, the rotating force provides spraying power for the liquid spraying device, and meanwhile the rotating force also provides adjusting power for the spraying range adjusting device;

the liquid spraying device comprises a telescopic guide pipe, a spray head and a closed switch, wherein the closed switch is used for enabling the liquid spraying device to be in an open or closed state;

the spraying range adjusting device comprises a height adjusting device and a length adjusting device, the height adjusting device is used for adjusting the spraying height of the liquid spraying device, and the length adjusting device is used for adjusting the horizontal spraying length of the liquid spraying device;

the height adjusting device comprises a first connecting rod, a pushing mechanism, a sliding component and a main sliding rail, wherein the main sliding rail is arranged on the frame, the guiding direction of the main sliding rail is vertical to the ground, the telescopic guide pipe is arranged on the sliding component, the sliding component is arranged in the main slide rail, the sliding component is matched with the main slide rail and can slide along the guiding direction of the main slide rail, when the sliding component displaces along the guiding direction of the main slide rail, the tractable telescopic guide pipe moves synchronously with the guide pipe, one end of the first connecting rod is connected with the power transmission device, the other end of the first connecting rod is contacted with the pushing mechanism, the power transmission device receives the rotating force generated by the rotation of the axle and transmits the rotating force to the first connecting rod, the first connecting rod moves up and down along the guide direction of the main slide rail under the action of power, the pushing mechanism is drawn to move synchronously, the pushing mechanism is contacted with the sliding component, and the pushing mechanism moves and pushes the sliding component to move along the guide direction of the main sliding rail;

the height adjusting device also comprises a trigger locking mechanism arranged in the main sliding rail, the motion state of the trigger locking mechanism can be divided into a trigger state and a locking state, when the trigger locking mechanism is in the trigger state, the pushing end of the first connecting rod is positioned between the two adjacent guide posts, the first connecting rod moves and pulls the guide posts to synchronously move with the first connecting rod, when the trigger locking mechanism is in the locking state, the trigger locking mechanism can enable the pushing end of the first connecting rod to be separated from the contact with the guide posts, and the pushing mechanism is locked to keep the height of the pushing mechanism unchanged;

the sliding component comprises a lower fixed plate and an upper fixed plate, the telescopic guide pipe is arranged between the lower fixed plate and the upper fixed plate, and the lower fixed plate is contacted with the pushing mechanism;

the pushing mechanism comprises a pushing plate, a plurality of guide posts which are uniformly distributed at intervals along the height direction of the pushing plate are arranged on the surface of the pushing plate facing to a first connecting rod, one end of the first connecting rod is connected with the power transmission device, the other end of the first connecting rod is a pushing end and is positioned between two adjacent guide posts, and when the first connecting rod moves and pushes the guide posts to move up and down along the guide direction of the main slide rail, the pushing plate can be pulled to move synchronously;

a sliding part is arranged between the pushing plate and the lower fixed plate, the sliding part is a trigger slide rail arranged on the pushing plate and a trigger slide block arranged on the lower fixed plate and matched with the trigger slide rail, the guiding direction of the trigger slide rail is vertical to the guiding direction of the main slide rail, and the pushing plate can move close to or far away from the first connecting rod along the guiding direction of the trigger slide rail through the matching of the trigger slide block and the trigger slide rail;

foretell trigger locking mechanism includes locking component, locking casing, and locking component sets up in the locking casing, locking component include connecting rod, check lock lever, a plurality of set up on the main slide rail and be the locking hole of even interval distribution along main slide rail direction, the connecting rod is used for connecting check lock lever and slurcam, check lock lever and locking hole phase-match and check lock lever and locking hole are located the same straight line that is on a parallel with main slide rail direction.

2. The special equipment for protecting crops or fruit tree seedlings as claimed in claim 1, wherein the vehicle body comprises a vehicle frame and an axle, the water tank, the liquid spraying device, the power transmission device and the spraying range adjusting device are all arranged on the vehicle frame, and the axle rotates and generates rotating force when the vehicle body moves.

3. Special equipment for protection of crops or fruit trees seedlings according to claim 1, the length adjusting device comprises a second connecting rod, a first gear rack transmission mechanism, a first bevel gear transmission mechanism, a second bevel gear transmission mechanism and a second gear rack transmission mechanism, one end of the second connecting rod is connected with the power transmission device, the other end of the second connecting rod is connected with the first gear rack transmission mechanism, the power transmission device receives rotating force generated by rotation of the axle and transmits the rotating force to the second connecting rod, the second connecting rod moves along the axial direction of the axle under the action of power, the telescopic guide pipe is connected with the gear rack transmission mechanism II, power generated by the motion of the connecting rod II is transmitted to the telescopic guide pipe through the gear rack transmission mechanism I, the bevel gear transmission mechanism II and the gear rack transmission mechanism II, and the telescopic guide pipe extends or contracts under the action of the power.

4. The special equipment for protecting crops or fruit tree seedlings as claimed in claim 3, wherein the first gear-rack transmission mechanism comprises a first rack, a first gear, a first intermediate rotating shaft and a support frame, the first intermediate rotating shaft is horizontally arranged, the axial direction of the first intermediate rotating shaft is perpendicular to the axial direction of the axle, the extending direction of the first rack is parallel to the axial direction of the axle, the support frame is fixedly arranged on the frame, the first rack is movably arranged on the support frame, a first sliding component is arranged between the first rack and the support frame, the first sliding component is a first sliding block arranged on the first rack and a first sliding rail arranged on the support frame and matched with the first sliding block, the guiding direction of the first sliding rail is parallel to the axial direction of the axle, the first rack can move along the guiding direction of the first sliding rail by matching the first sliding block and the first sliding rail, and the gear is sleeved outside the power input shaft, the second connecting rod is fixedly connected with the first rack, and can pull the first racks to synchronously move when moving and enable the first gear to rotate, and the first gear rotates to drive the first intermediate rotating shaft to rotate;

the bevel gear transmission mechanism I comprises a bevel gear a, a bevel gear b and an intermediate rotating shaft II, wherein the axial direction of the intermediate rotating shaft II is parallel to the axial direction of the axle, the bevel gear a is sleeved outside the power output shaft end of the intermediate rotating shaft I, the bevel gear b is sleeved outside the power input shaft end of the intermediate rotating shaft II and is meshed with the bevel gear a, and the intermediate rotating shaft I rotates and enables the intermediate rotating shaft II to rotate through the bevel gear a and the bevel gear b;

the bevel gear transmission mechanism II comprises a bevel gear c, a bevel gear d, a middle rotating shaft III and a middle rotating shaft IV, wherein the axial direction of the middle rotating shaft IV is parallel to the guiding direction of the main sliding rail, the middle rotating shaft III and the middle rotating shaft II are coaxially arranged, a coupling I is arranged between the middle rotating shaft III and the middle rotating shaft II, the power output shaft end of the middle rotating shaft II is connected with the power input shaft end of the coupling I, the power output shaft end of the coupling I is connected with the power input shaft end of the middle rotating shaft III, the middle rotating shaft II rotates and enables the middle rotating shaft III to rotate through the coupling I, the bevel gear c is sleeved outside the power output shaft end of the middle rotating shaft III, the bevel gear d is sleeved outside the power input shaft end of the middle rotating shaft IV and is meshed with the;

the second gear rack transmission mechanism comprises a second rack, a second gear and a fifth middle rotating shaft, the fifth middle rotating shaft and the fourth middle rotating shaft are coaxially arranged, a second coupler is arranged between the fifth middle rotating shaft and the fourth middle rotating shaft, the power output shaft end of the fourth middle rotating shaft is connected with the power input shaft end of the second coupler, the power output shaft end of the second coupler is connected with the power input shaft end of the fifth middle rotating shaft, the fourth middle rotating shaft rotates and enables the fifth middle rotating shaft to rotate through the second coupler, the second rack is arranged between an upper fixing plate and a lower fixing plate, the extending direction of the second rack is parallel to the extending direction of the first rack, a second sliding part is arranged between the second rack and the lower fixing plate, the second sliding part is a second sliding block arranged on the second rack and a second sliding rail which is arranged on the lower fixing plate and matched with the second sliding block, the guiding direction of the second sliding rail is parallel to the guiding, the power output end part of the second rack is fixedly connected with the telescopic guide pipe, the second gear is sleeved outside the power output shaft end of the fifth middle rotating shaft and meshed with the second rack, and the fifth middle rotating shaft rotates and enables the telescopic guide pipe to extend or contract through the second gear and the second rack.

5. A special equipment for protecting seedlings of crops or fruit trees as claimed in claim 3, wherein said length adjusting device further comprises a closing mechanism for switching between engaging state and disengaging state of bevel gear c and bevel gear d in bevel gear transmission mechanism II;

the bevel gear d is connected with the middle rotating shaft IV through a connecting piece, the bevel gear d can move along the axial direction of the middle rotating shaft IV, and the connecting piece is an external spline arranged on the middle rotating shaft IV and an internal spline arranged on the bevel gear d;

the closing mechanism comprises a movable support and a handle, the movable support comprises an upper support and a lower support, the upper support and the lower support are of an integrated structure, the upper support is provided with a first sleeve hole matched with a fourth middle rotating shaft, the upper support is movably sleeved outside the fourth middle rotating shaft through the first sleeve hole and is positioned above a bevel gear d, the lower support is provided with a second sleeve hole matched with the fourth middle rotating shaft, the lower support is movably sleeved outside the fourth middle rotating shaft through the second sleeve hole and is positioned below the bevel gear d, when the movable support displaces along the axial direction of the fourth middle rotating shaft, the bevel gear b can be pulled to move synchronously with the movable support, the handle comprises a rocker and a middle rod, one end of the middle rod is hinged with the movable support, a hinge axis core line formed by the hinged position of the middle rod and the movable support is parallel to the axial direction of the fourth middle rotating shaft, and the other end of the middle rod is fixedly connected with the rocker, when the rocker is displaced along the axial direction of the middle rotating shaft IV, the movable support can be pulled to synchronously move through the middle rod;

the closing mechanism also comprises a shell in a cubic structure, the power output shaft ends of the bevel gear c, the bevel gear d and the middle rotating shaft III and the power input shaft end of the middle rotating shaft IV are all positioned in the shell, a limiting guide groove is arranged on the shell, the middle rod is positioned in the limiting guide groove, the rocker is positioned outside the shell, the limiting guide groove is divided into three parts which are respectively a first limiting groove, a second guide groove and a second limiting groove, the first limiting groove and the second limiting groove are horizontally arranged, the first limiting groove is positioned above the second limiting groove, the second guide groove is vertically arranged, one end of the second guide groove is communicated with the first limiting groove, the other end of the second guide groove is communicated with the second limiting groove, the first limiting groove, the second guiding groove and the second limiting groove form a Z-shaped structure, the second guide groove is used for guiding the middle rod to the first limiting groove or the second limiting groove, and when the, and the bevel gear c and the bevel gear d are in a meshed state, and when the middle rod is positioned in the first limiting groove, the bevel gear c and the bevel gear d are in a disengaged state.

6. The special equipment for protecting crops or fruit tree seedlings as claimed in any one of claims 1 to 5, wherein the liquid spraying device further comprises a liquid diversion system and a water pump mechanism, the liquid diversion system is used for conveying the liquid in the water tank to the water pump mechanism, the water pump mechanism is used for conveying the liquid to the spray head, and the spray head is used for spraying the liquid outwards;

the water pump mechanism comprises a pump body, a sealing plug and a push rod, wherein the pump body is of a cylindrical barrel structure with two open ends, a connecting nozzle communicated with an inner cavity of the pump body is arranged at one opening of the pump body, a connector communicated with the inner cavity of the pump body is arranged on the outer circular surface of the pump body, a one-way valve used for controlling liquid to flow from a water tank to the pump body in one way is arranged at the joint of the connector and a liquid guide system, the sealing plug is arranged in the inner cavity of the pump body and forms a sealed sliding fit with the sealing plug, one end of the push rod is connected with the sealing plug, the other end of the push rod is connected with a power transmission device, the power transmission device receives rotating force generated by the rotation of an axle and transmits the rotating force to the push rod, the push rod drives the sealing plug to slide along the extending direction of the inner cavity of the pump, thereby pushing the liquid in the liquid containing cavity to flow and be discharged through the connecting nozzle;

the liquid diversion system comprises a first diversion pipe, a second diversion pipe and a diversion hose, wherein one end of the first diversion pipe is communicated with the water tank, the other end of the first diversion pipe is communicated with the interface of the pump body, one end of the second diversion pipe is communicated with the connecting nozzle of the pump body, the other end of the second diversion pipe is communicated with one end of the diversion hose, the other end of the diversion hose is communicated with the telescopic diversion pipe, the closing switch is arranged on the first diversion pipe, a one-way control mechanism for controlling liquid to flow from the pump body to the spray nozzle in a one-way mode is arranged on the second diversion pipe, the one-way valve is arranged at the connecting position of the first diversion pipe and the interface, and the structure of the one;

the second guide pipe comprises a lower guide pipe and an upper guide pipe, the lower guide pipe is connected and communicated with a connecting nozzle of the pump body, the upper guide pipe is sleeved inside the lower guide pipe, and the one-way control mechanism is arranged at the connection position of the lower guide pipe and the upper guide pipe;

the lower guide pipe is internally provided with a built-in step, the center of the built-in step is provided with a water through hole, the one-way control mechanism comprises a liquid stopping ball and a trigger spring, the liquid stopping ball is arranged above the water through hole and is matched with the water through hole, one end of the trigger spring is abutted against the liquid stopping ball, the other end of the trigger spring is abutted against the upper guide pipe, and the elastic force of the trigger spring enables the liquid stopping ball to move close to the water through hole along the axial direction of the lower guide pipe.

7. The special equipment for protecting crops or fruit trees and young seedlings as claimed in claim 6, wherein the power transmission device comprises a power transmission mechanism and a linkage member, the linkage member comprises a first linkage member and a second linkage member, the first linkage member is connected with the power transmission mechanism, the second linkage member is connected with the first linkage member, the first connecting rod is connected with the first linkage member, the second connecting rod is connected with the second linkage member, the power generated by the rotation of the axle is transmitted to the first linkage member through the power transmission mechanism and is transmitted to the first connecting rod through the first linkage member, and the first linkage member also transmits the power to the second linkage member and is transmitted to the second connecting rod through the second linkage member;

the power transmission mechanism comprises a transmission rotating shaft and a gear transmission mechanism, the transmission rotating shaft is horizontally arranged, the axial direction of the transmission rotating shaft is perpendicular to the axial direction of the axle, the gear transmission mechanism is a helical gear transmission mechanism, the helical gear transmission mechanism comprises a driving helical gear and a driven helical gear, the driving helical gear is sleeved outside the axle, the driven helical gear is sleeved outside the transmission rotating shaft, and the driving helical gear is meshed with the driven helical gear;

the linkage member I comprises a first rotating disc, a first connecting plate, a first linkage shaft and a first linkage shell, the first linkage shell is of a cubic structure, a first shaft hole is formed in the center of the end face, facing the transmission rotating shaft, of the first linkage shell, the axial direction of the first shaft hole is parallel to the axial direction of the transmission rotating shaft, the first linkage shaft is matched with the first shaft hole and can rotate around the axis of the first linkage shaft, the first rotating disc is fixedly connected with the transmission rotating shaft and is coaxially arranged with the transmission rotating shaft, the transmission rotating shaft rotates to drive the first rotating disc to rotate, one end of the first connecting plate is hinged with the first rotating disc, the hinged part of the first connecting plate deviates from the circle center of the first rotating disc, a hinged shaft core line formed at the hinged part of the first connecting plate and the first rotating disc is parallel to the axial direction of the transmission rotating shaft, the other end of the first connecting plate is hinged with the power receiving end of, one rotation of the turntable drives the connecting plate I to deflect and enables the linkage shaft I to move;

the linkage member I also comprises a supporting plate and a guide post, the supporting plate is fixedly arranged on the frame and is positioned below the linkage shell I, the guide post is fixedly arranged on the supporting plate, the guide direction of the guide post is vertical to the ground, the linkage shell I is also provided with a guide hole matched with the guide post, the linkage shell I is arranged on the guide post in a matching way through the guide hole and the guide post, the connection plate I deflects to drive the linkage shaft I to move, the motion of the linkage shaft I can be divided into vertical sliding along the guide direction of the guide post and rotation around the axis of the linkage shaft I, and the vertical sliding of the linkage shaft I along the guide direction of the guide post can drive the linkage shell I to vertically slide along the guide direction of the guide post;

the first connecting rod is fixedly connected with the first linkage shell, and when the first linkage shell slides up and down along the guiding direction of the guide post, the first connecting rod can be pulled to move synchronously with the first linkage shell;

the linkage component II comprises a connecting plate II, a linkage shaft II and a linkage shell II, the linkage shell II is of a cubic structure, a shaft hole II is arranged at the center of the end surface of the linkage shell II facing to the linkage shell I, the axial direction of the shaft hole II is parallel to the axial direction of the transmission rotating shaft, the linkage shaft II is matched with the shaft hole II and can rotate around the axis of the linkage shaft II, one end of the connecting plate II is hinged with the power driving end of the linkage shaft I, a hinge shaft core wire formed at the position where the connecting plate II is hinged with the linkage shaft I is parallel to the axial direction of the transmission rotating shaft, the other end of the connecting plate II is hinged with the power receiving end of the linkage shaft II, a hinge shaft core wire formed at the position where the connecting plate II is hinged with the linkage shaft II is parallel to the axial direction of the transmission rotating shaft, the linkage shaft I drives the connecting plate II to deflect, The linkage shaft II moves along the axial direction of the axle to drive the linkage shell II to do synchronous motion;

the second connecting rod is fixedly connected with the second linkage shell, and the second linkage shell can pull the second connecting rod to move synchronously with the second linkage shell when moving along the axial direction of the axle;

one end of the push rod is connected with the sealing plug, the other end of the push rod is connected with the linkage shell II, when the linkage shell II moves along the axial direction of the axle, the push rod can be pulled to move synchronously with the axle, and the push rod moves and drives the sealing plug to slide along the extending direction of the inner cavity of the pump body.

8. The special equipment for protecting crops or fruit trees and young seedlings as claimed in claim 7, wherein the number of the liquid spraying devices is two and the two liquid spraying devices are respectively arranged at one side of the vehicle body, the water tank comprises a water tank body and a three-way pipe, the water tank body is used for storing liquid to be sprayed, the three-way pipe comprises two liquid outlet ports and one liquid inlet port, the first flow guide pipes of the two liquid spraying devices are respectively connected with one liquid outlet port of the three-way pipe, the water tank body is connected with the liquid inlet port of the three-way pipe, and the liquid in the water tank body respectively enters the liquid spraying devices at two sides of the vehicle body through the three-way pipe.

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