CN109334745B - Loading and unloading trolley - Google Patents
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- CN109334745B CN109334745B CN201811261444.5A CN201811261444A CN109334745B CN 109334745 B CN109334745 B CN 109334745B CN 201811261444 A CN201811261444 A CN 201811261444A CN 109334745 B CN109334745 B CN 109334745B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/04—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment
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Abstract
The invention provides a loading and unloading trolley, wherein the loading and unloading trolley is used for loading and unloading container cages and comprises: a vehicle body; the first wheel is connected with the bottom of the vehicle body; a second wheel connected to a side of the vehicle body; the loading and unloading trolley is provided with a design gravity center G, the peripheral surfaces of the first wheel and the second wheel are internally tangent to a concentric circle with the design gravity center G as the center, the loading and unloading trolley overturns with the first wheel as a fulcrum under the action of external force, and the second wheel lands on the ground to reduce the height of the trolley body in the vertical direction. The invention solves the problem that the container cage in the prior art can not enter the luggage van through the van door after the height is increased.
Description
Technical Field
The invention relates to the technical field of cargo transportation, in particular to a loading and unloading trolley.
Background
In quick freight technical field, mainly use the bulk cargo as the owner, lead to that the manual loading and unloading is with high costs, handling efficiency is low, is unfavorable for shortcomings such as goods management and control, utilizes the collection dress cage to transport the bulk cargo, can promote freight efficiency, and the goods management and control of being convenient for is favorable to promoting the degree of automation of goods handling.
In the prior art, when a container cage is transported by a railway wagon, the height of a door of the railway wagon is lower than the internal height of the railway wagon, taking a 25T-type luggage van as an example, the height of the door of the 25T-type luggage van is 1945mm, and the internal height of the 25T-type luggage van is 2900mm, in order to ensure that the container cage can smoothly enter from the door, the height of the container cage in the prior art is not more than 1900mm, so that a large idle space is left in the 25T-type luggage van, and the loading rate of the 25T-type luggage van is lower.
In order to solve the problem that the loading rate of a railway wagon is low and simultaneously give consideration to highway-railway combined transportation, the height of a van body of a van is increased from 1900mm to 2300mm, the container cage with the increased height cannot be accessed by a vehicle door when standing, and how to realize the advance and the exit of the vehicle door of the container cage with the height of 2300mm becomes a problem which needs to be solved urgently.
Disclosure of Invention
The invention mainly aims to provide a loading and unloading trolley to solve the problem that a container cage in the prior art cannot enter a luggage van through a vehicle door after the height of the container cage is increased.
In order to achieve the above object, the present invention provides a loading trolley for loading and unloading a container cage, comprising: a vehicle body; the first wheel is connected with the bottom of the vehicle body; a second wheel connected to a side of the vehicle body; the loading and unloading trolley is provided with a design gravity center G, the peripheral surfaces of the first wheel and the second wheel are internally tangent to a concentric circle with the design gravity center G as the center, the loading and unloading trolley overturns with the first wheel as a fulcrum under the action of external force, and the second wheel lands on the ground to reduce the height of the trolley body in the vertical direction.
Further, the design center of gravity G is calculated from the weight of the handling trolley, the container cage and the cargo within the container cage.
Further, an included angle alpha between a reverse extension line of a connecting line of the rotation center of the second wheel and the design gravity center G and the vertical direction is greater than or equal to 30 degrees and less than or equal to 130 degrees.
Furthermore, the loading and unloading trolley also comprises at least one third wheel, the third wheel is connected with the side surface of the trolley body, and the outer peripheral surface of the third wheel is internally tangent to the concentric circles and is positioned between the first wheel and the second wheel.
Furthermore, the loading and unloading trolley also comprises a support frame, the support frame is connected with the side surface of the trolley body, and the surface of the support frame, which is far away from the trolley body, is an arc surface superposed with the concentric circle.
Further, the handling trolley further comprises: the fourth wheel is movably arranged at the bottom of the vehicle body and is arranged at an interval with the first wheel, and the fourth wheel is provided with a first stop position and a second stop position along the direction far away from the vehicle body; when the fourth wheel is located at the first stop position, the distance between the surface of the fourth wheel far away from the vehicle body and the vehicle body is equal to the distance between the surface of the first wheel far away from the vehicle body and the vehicle body; when the fourth wheel is located at the second stop position, the distance between the surface of the fourth wheel far away from the vehicle body and the vehicle body is larger than the distance between the surface of the first wheel far away from the vehicle body and the vehicle body.
Furthermore, the loading and unloading trolley comprises a first connecting rod, a second connecting rod, a slide rail structure, a third connecting rod, a fourth connecting rod and a sliding block, wherein the first end of the first connecting rod is hinged with the bottom of the trolley body, the second end of the first connecting rod is hinged with the first end of the second connecting rod, a fourth wheel is arranged at the connecting position of the first connecting rod and the second connecting rod, the slide rail structure is arranged at the bottom of the trolley body, the third connecting rod penetrates through the slide rail structure, and the first end of the third connecting rod is hinged with the second end of the second connecting rod; the first end of the fourth connecting rod is hinged with the second end of the third connecting rod, the sliding block is rotatably arranged on the side surface of the vehicle body and is in sliding connection with the fourth connecting rod, and the second end of the fourth connecting rod forms a pressing operation end; or the sliding block is hinged with the second end of the third connecting rod, the first end of the fourth connecting rod is connected with the sliding block in a sliding mode, the middle of the fourth connecting rod is connected with the side face of the vehicle body in a pivoting mode, and the second end of the fourth connecting rod forms a pressing operation end.
Further, the vehicle body includes: two fork plates are arranged at intervals; the connecting plate is used for connecting the two fork plates; the two support tubes are connected with the two fork plates in a one-to-one correspondence mode, the support tubes are connected with the first ends of the fork plates, each support tube comprises a straight tube section and a bending section, the first end of each straight tube section is connected with the corresponding fork plate, the second end of each straight tube section is connected with the corresponding bending section, and the corresponding bending section extends towards the second end of the corresponding fork plate; the limiting pipe is connected with the two supporting pipes and comprises a connecting section and limiting sections positioned at two ends of the connecting section, the connecting section is connected with the two supporting pipes, and the limiting sections extend towards the second ends of the fork plates; the supporting tube, the limiting tube and the fork plate are enclosed to form an accommodating space for accommodating the container cage.
Further, the fork board has hollow installation space, and the opening of dodging that is linked together with installation space is still seted up to the lower surface of fork board, and the slide rail structure includes: the shaft sleeve is fixedly connected with the fork plate and is positioned at the avoidance opening; the oilless bushing is arranged in the shaft sleeve; the baffle is arranged at the other end of the shaft sleeve; the first end of first connecting rod and fork board pivotally connected and be located dodge the opening part, and the third connecting rod includes backstop section and sliding section, and backstop section and axle sleeve backstop cooperation, the sliding section slides in the oilless bush.
Further, the loading and unloading trolley also comprises a force-increasing mechanism, and the force-increasing mechanism comprises: the first boosting connecting rod is pivotally connected with the bottom of the vehicle body; the second boosting connecting rod is pivotally connected with the bottom of the vehicle body; the two ends of the third boosting connecting rod are respectively connected with the first boosting connecting rod and the second boosting connecting rod in a pivoting manner; the boosting wheel is arranged at the joint of the first boosting connecting rod and the third boosting connecting rod, and the boosting wheel is arranged at the joint of the second boosting connecting rod and the third boosting connecting rod; and the fourth boosting connecting rod is fixedly connected with the second boosting connecting rod and forms a pressing operation end.
According to another aspect of the present invention, there is provided a method of designing a loading trolley for loading and unloading containments, comprising the steps of: determining a design gravity center G according to the weight of the container cage, the goods in the container cage and the loading and unloading trolley; determining the position of a first wheel according to the design gravity center G, the size of the container cage and the position of a universal wheel of the container cage; the design gravity center G is taken as a circle center to make a concentric circle, and the peripheral surface of the first wheel is tangent to the concentric circle; the position of a second wheel is determined, the outer circumference of which is tangent to the concentric circles.
By applying the technical scheme, the loading and unloading trolley is designed and used for transporting the container cage into or out of the 25T luggage van, the loading and unloading trolley can be manually turned, the loading and unloading trolley drives the container cage to be synchronously turned, and the heights of the loading and unloading trolley and the container cage in the vertical direction can be reduced, so that the overall height of the loading and unloading trolley and the container cage is lower than the height of a vehicle door of the luggage van, and the container cage is smoothly transported into the 25T luggage van. Specifically, when the loading and unloading trolley is designed, a design gravity center G is determined according to the container cage, goods in the container cage and the weight of the loading and unloading trolley, the position of a first wheel is determined according to the design gravity center G, the size of the container cage and universal wheels of the container cage, the design gravity center G is taken as a circle center to be a concentric circle, and the outer peripheral surface of the first wheel is tangent to the concentric circle; and determining the position of the second wheel, wherein the peripheral surface of the second wheel is tangent to the concentric circles, so that when the loading and unloading trolley overturns by taking the first wheel 20 as a fulcrum until the second wheel 30 lands, the gravity direction g of the loading and unloading trolley and the container cage 1 is between the first wheel 20 and the second wheel 30, and the stability of the loading and unloading trolley is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a loading truck according to a first embodiment of the invention;
FIG. 2 shows an enlarged schematic view at A in FIG. 1;
FIG. 3 shows a top view of the handling cart of FIG. 1;
FIG. 4 shows a schematic structural view of the cage and the loading/unloading trolley when erected;
FIG. 5 is a schematic structural view of the container cage and handling cart of FIG. 4 in one position during tipping;
FIG. 6 is a schematic structural view of the container cage and handling cart of FIG. 4 in another position during tipping;
fig. 7 shows a schematic structural view of the container cage and the loading trolley of fig. 4, when the tipping is completed;
FIG. 8 illustrates a functional schematic of a fourth wheel, a first link, a second link, a track structure, a third link, and a fourth link of the handling cart of FIG. 1;
FIG. 9 is a schematic diagram showing the operation of the fourth wheel, the first link, the second link, the slide rail structure, the third link and the fourth link of the loading and unloading truck according to the second embodiment;
FIG. 10 is a schematic structural view of a loading/unloading truck according to a third embodiment;
fig. 11 shows a schematic structural view of the loading/unloading trolley of the fourth embodiment.
Wherein the figures include the following reference numerals:
1. packaging a cage; 2. assembling a cage body; 3. a universal wheel; 10. a vehicle body; 11. a fork plate; 111. avoiding the opening; 12. a connecting plate; 13. supporting a tube; 131. a straight pipe section; 132. bending sections; 14. a limiting pipe; 141. a connecting section; 142. a limiting section; 15. a reinforcing plate; 16. a support plate; 20. a first wheel; 30. a second wheel; 40. a third wheel; 50. a support frame; 60. a fourth wheel; 71. a first link; 72. a second link; 73. a slide rail structure; 731. a shaft sleeve; 732. an oilless bushing; 733. a baffle plate; 74. a third link; 741. a stop section; 742. a sliding section; 75. a fourth link; 76. a slider; 80. a return spring; 91. a first force-increasing connecting rod; 92. a second force-increasing connecting rod; 93. a third force-increasing connecting rod; 94. a booster wheel; 95. a fourth force-increasing connecting rod; 100. a support wheel; 110. and (5) installing a pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a loading and unloading trolley and a design method thereof, aiming at solving the problem that a container cage in the prior art cannot enter a luggage van through a vehicle door after the height of the container cage is increased.
According to one aspect of the present application, there is provided a handling cart, and four embodiments are provided, which are described in detail below:
example one
As shown in fig. 1 to 8, the loading and unloading trolley is used for loading and unloading the container cage 1 and comprises a trolley body 10, a first wheel 20 and a second wheel 30, wherein the first wheel 20 is connected with the bottom of the trolley body 10, and the second wheel 30 is connected with the side surface of the trolley body 10; the loading and unloading trolley is provided with a design gravity center G, the peripheral surfaces of the first wheel 20 and the second wheel 30 are internally tangent to a concentric circle with the design gravity center G as the center, the loading and unloading trolley overturns with the first wheel 20 as a fulcrum under the action of external force, and the second wheel 30 lands on the ground to reduce the height of the vehicle body 10 in the vertical direction.
In this application, a loading and unloading dolly has been designed for carry into or transport out 25T luggage van with the collection dress cage, the loading and unloading dolly that this application provided can be manually overturn, and the loading and unloading dolly drives the synchronous upset of collection dress cage, can reduce the height of loading and unloading dolly and collection dress cage in vertical direction to make the whole height of loading and unloading dolly and collection dress cage be less than the door height of luggage van, and then transport the collection dress cage to 25T luggage van smoothly. When the loading and unloading trolley overturns with the first wheel 20 as a pivot until the second wheel 30 lands, the gravity direction g of the loading and unloading trolley and the container cage 1 is between the first wheel 20 and the second wheel 30, so that the overturning stability of the loading and unloading trolley is ensured.
The turnover loading and unloading trolley provided by the invention can realize turnover of the container cage 1, so that the height of the container cage 1 is lower than the door height of a vehicle door, and finally, the loading and unloading operation of the container cage 1 is realized. Optionally, the loading and unloading trolley provided by the application is suitable for loading and unloading container cages for 25T-type luggage trucks, 160Km/h sliding plug door quick shed trucks or other types of shed trucks, and can also be used for loading and unloading container cages 1 in storage or in automobiles and the like. The application provides a loading and unloading dolly also can be used to the loading and unloading of other products except that collection dress cage 1. The application provides a loading and unloading dolly uses with the cooperation of the collection dress cage 1 after increasing, and multiplicable volume that carries cargo realizes drawing goods more, has reduced freight's operation cost.
Wherein the design center of gravity G is calculated from the weight of the handling trolley, the container cage 1 and the cargo in the container cage 1.
Alternatively, an angle α between a reverse extension line of a line connecting the rotation center of the second wheel 30 and the design center of gravity G and the vertical direction is 30 ° or more and 130 ° or less.
Optionally, the handling cart further comprises at least one third wheel 40, the third wheel 40 being attached to a side of the body 10, and the outer periphery of the third wheel 40 being inscribed in a concentric circle and located between the first wheel 20 and the second wheel 30. According to actual requirements, the size and the number of the third wheels 40 are set, in the overturning process of the loading and unloading trolley, the third wheels 40 sequentially touch the ground, the heights of the container cage and the loading and unloading trolley in the vertical direction are gradually reduced until the second wheels 30 touch the ground, and the heights of the container cage and the loading and unloading trolley in the vertical direction are lower than the upper limit of the door. After the number of the third wheels 40 is increased, the moment arm of the loading and unloading trolley during overturning can be reduced, so that the required overturning force is reduced, and the loading and unloading trolley is more stable and has less impact during overturning.
In the first embodiment, the weight and the economic cost of the loading and unloading trolley are comprehensively considered, the loading and unloading trolley comprises three pairs of third wheels 40, and the sizes of the three pairs of third wheels 40 are different according to the actual use requirement. As shown in fig. 5 to 7, three pairs of third wheels 40 sequentially land, and finally the third wheels 40 adjacent to the second wheels 30 and the second wheels 30 land together, so that the loading and unloading trolley is pushed by the third wheels 40 and the second wheels 30 to move, and the container cage 1 on the loading and unloading trolley is driven to move, and the container cage 1 can freely enter and exit the 25T-shaped luggage van, thereby completing loading and unloading of goods.
As shown in fig. 4, the cage 1 includes a cage body 2 and a universal wheel 3 disposed below the cage body 2, and when the cage 1 is located on the body 10 of the loading and unloading cart, the distance between the surface of the universal wheel 3 away from the body 10 and the body 10 is equal to the distance between the surface of the first wheel 20 away from the body 10 and the body 10. Thus, the loading and unloading trolley is directly pushed, so that the cage body 2 is positioned on the body 10 of the loading and unloading trolley.
As shown in fig. 1 and 2, the loading and unloading trolley further comprises a fourth wheel 60, the fourth wheel 60 is movably arranged at the bottom of the trolley body 10 and is spaced from the first wheel 20, and the fourth wheel 60 has a first stop position and a second stop position in a direction away from the trolley body 10; when the fourth wheel 60 is located at the first parking position, the distance between the surface of the fourth wheel 60 remote from the vehicle body 10 and the vehicle body 10 is equal to the distance between the surface of the first wheel 20 remote from the vehicle body 10 and the vehicle body 10; when the fourth wheel 60 is located at the second parking position, the distance between the surface of the fourth wheel 60 remote from the vehicle body 10 and the vehicle body 10 is larger than the distance between the surface of the first wheel 20 remote from the vehicle body 10 and the vehicle body 10. Thus, initially, the loading and unloading cart is in an upright state, and when the fourth wheel 60 is located at the first stop position, the first wheel 20 and the fourth wheel 60 land, so that the fourth wheel 60 moves from the first stop position to the second stop position, thereby realizing the pre-overturn of the loading and unloading cart.
As shown in fig. 1, 2 and 8, the loading and unloading trolley includes a first link 71, a second link 72, a rail structure 73, a third link 74, a fourth link 75 and a slider 76, wherein a first end of the first link 71 is hinged to the bottom of the vehicle body 10, a second end of the first link 71 is hinged to a first end of the second link 72, a fourth wheel 60 is disposed at a connection position of the first link 71 and the second link 72, the rail structure 73 is disposed at the bottom of the vehicle body 10, the third link 74 passes through the rail structure 73, a first end of the third link 74 is hinged to a second end of the second link 72, a first end of the fourth link 75 is hinged to a second end of the third link 74, the slider 76 is rotatably disposed on a side surface of the vehicle body 10 and slidably connected to the fourth link 75, and a second end of the fourth link 75 forms a pressing operation end. Thus, by pressing the operating end, the fourth wheel 60 can be moved downwards, and when the upright loading and unloading trolley is turned over, the container cage is inclined by a certain angle in advance, so that the container cage 1 can be turned over more laborsavingly; when the loading and unloading trolley is turned to the vertical state, the fourth wheel 60 lands on the ground before the universal wheel 3 of the container cage 1, so that the universal wheel 3 of the container cage 1 is protected, and the impact on the container cage 1 is reduced.
As shown in fig. 1 to 3, the vehicle body 10 includes two fork plates 11 arranged at intervals, a connecting plate 12, two support tubes 13 and a limiting tube 14, the connecting plate 12 is used for connecting the two fork plates 11, the connecting plate 12 is used for bearing the weight of the container cage 1 and also has a certain structural reinforcement function, the two support tubes 13 are correspondingly connected with the two fork plates 11 one by one, the support tubes 13 are connected with first ends of the fork plates 11, the support tubes 13 include straight tube sections 131 and bending sections 132, the first ends of the straight tube sections 131 are connected with the fork plates 11, second ends of the straight tube sections 131 are connected with the bending sections 132, the bending sections 132 extend towards the second ends of the fork plates 11, the limiting tube 14 is connected with the two support tubes 13, the limiting tube 14 includes connecting sections 141 and limiting sections 142 located at two ends of the connecting sections 141, the connecting sections 141 are connected with the two support tubes 13, and the limiting sections 142 extend towards the second; the supporting tube 13, the limiting tube 14 and the fork plate 11 enclose an accommodating space for accommodating the container cage 1. Like this, promote the loading and unloading dolly, insert two fork boards 11 to the below of collection dress cage body 2 to make collection dress cage body 2 be located accommodation space, fork board 11 plays the effect of undertaking collection dress cage 1 weight, utilizes stay tube 13 and spacing pipe 14 to carry on spacingly to collection dress cage 1, thereby promotes the collection dress cage motion through promoting the loading and unloading dolly, realizes the loading and unloading of collection dress cage 1.
As shown in fig. 2, the fork plate 11 has a hollow installation space, the lower surface of the fork plate 11 is further provided with an avoiding opening 111 communicated with the installation space, the slide rail structure 73 includes a shaft sleeve 731, an oilless bushing 732 and a baffle 733, the shaft sleeve 731 is fixedly connected with the fork plate 11 and located at the avoiding opening 111, the oilless bushing 732 is installed in the shaft sleeve 731, the baffle 733 is installed at the other end of the shaft sleeve 731, the first end of the first link 71 is pivotally connected with the fork plate 11 and located at the avoiding opening 111, the third link 74 includes a stopping section 741 and a sliding section 742, the stopping section 741 is in stopping fit with the shaft sleeve 731, and the sliding section 742 slides in the oilless bushing 732. Thus, when the stopping section 741 of the third link 74 is in stopping engagement with the bushing 731, the fourth wheel 60 is located at the first stopping position, the fourth link 75 is pressed, the fourth link 75 rotates and drives the slider 76 to rotate relative to the vehicle body 10, the fourth link 75 slides relative to the slider 76 and drives the fourth link 75 to move leftward, the fourth link 75 slides in the slide rail structure 73, the second link 72 rotates relative to the fourth link 75, the first link 71 rotates relative to the fork 11, and the fourth wheel 60 at the connection point of the first link 71 and the second link 72 moves downward.
In the first embodiment, the first end of the first link 71 is pivotally connected with the fork plate 11 through a hinge pin to form a revolute pair; the second end of the first link 71 is pivotally connected with the fourth wheel 60 and the second link 72 through hinge pins to form a revolute pair; the stopping section 741 forms a hinge seat, and the second connecting rod 72 and the hinge seat are pivotally connected through a hinge pin to form a revolute pair; the bushing 731, oilless bushing 732, and baffle 733 form a sliding pair. Optionally, the vehicle body 10 further includes a plurality of connecting steel pipes, the connecting steel pipes are connected with the fork plate 11, the two support pipes 13 or the limiting pipe 14 to jointly form a vehicle body of the loading and unloading trolley, each wheel is connected with the fork plate 11, the two support pipes 13 or the limiting pipe 14 through the connecting steel pipe, and each wheel is connected with the connecting steel pipe through a pin shaft to form a revolute pair.
As shown in fig. 1, the loading and unloading trolley further comprises a reinforcing plate 15 and a support plate 16, wherein the reinforcing plate 15 is fixedly connected with the fork plate 11 and/or the connecting steel pipe to play a role in reinforcement; the support plate 16 is fixedly connected with the connecting steel pipe, and the first wheel 20 and the support plate 16 form a revolute pair through a pin shaft; the third link 74 and the fourth link 75 are connected by a hinge base and a hinge pin to form a revolute pair.
As shown in fig. 1, the connecting steel tube includes a mounting tube 110, the third wheel 40 is connected to the support tube 13 through the mounting tube 110, the sliding block 76 is pivotally disposed on the support tube 13, optionally, the sliding block 76 has a guide hole, and the fourth link 75 is inserted into the guide hole to form a moving pair.
Optionally, the handling trolley further comprises a reinforcing rib connected between the support tube 13 and the limiting tube 14 to ensure a stable connection between the support tube 13 and the limiting tube 14.
Optionally, the loading and unloading trolley further comprises a protection tube, and the protection tube is sleeved on the limiting section 142 to play a role in protection.
As shown in fig. 1 and 3, the loading and unloading trolley further includes a return spring 80, one end of the return spring 80 is connected to the trolley body 10, and the other end of the return spring 80 is connected to the fourth link 75. In this way, in the case where the external force is no longer applied to the fourth link 75, the fourth link 75 is returned to the home position by the return spring 80, and accordingly, the fourth wheel 60 is returned from the second parking position to the first parking position.
Example two
The difference between the second embodiment and the first embodiment is that the slider 76 is disposed at a different position, specifically, as shown in fig. 9, the loading and unloading trolley includes a first link 71, a second link 72, a slide rail structure 73, a third link 74, a fourth link 75 and a slide block 76, wherein a first end of the first link 71 is pivotally connected with the bottom of the vehicle body 10, a second end of the first link 71 is hinged with a first end of the second link 72, a fourth wheel 60 is arranged at the connection position of the first link 71 and the second link 72, the slide rail structure 73 is arranged at the bottom of the vehicle body 10, the third link 74 passes through the slide rail structure 73, a first end of the third link 74 is hinged with a second end of the second link 72, the slide block 76 is hinged with a second end of the third link, a first end of the fourth link 75 is slidably connected with the slide block 76, a middle portion of the fourth link 75 is pivotally connected with a side surface of the vehicle body 10, and a second end of the fourth link 75 forms a pressing operation end.
In the second embodiment, the fourth wheel 60 is moved from the first parking position to the second parking position by pressing the fourth link 75, as in the first embodiment. Specifically, when the second end of the fourth link 75 is pressed, the fourth link 75 rotates relative to the vehicle body 10, the slider 76 moves leftward along with the fourth link 75, the slider 76 drives the third link 74 to slide leftward in the slide rail structure 73, the second link 72 rotates relative to the third link 74, the first link 71 rotates relative to the fork 11, and the fourth wheel 60 at the connection point of the first link 71 and the second link 72 moves downward. Thus, when the upright loading and unloading trolley is turned over, the container cage 1 is inclined by a certain angle in advance, so that the container cage 1 is turned over more laborsavingly; when the loading and unloading trolley is turned to the vertical state, the fourth wheel 60 lands on the ground before the universal wheel 3 of the container cage 1, so that the universal wheel 3 of the container cage 1 is protected, and the impact on the container cage 1 is reduced.
EXAMPLE III
The difference between the third embodiment and the first embodiment is that the circular arc surface of the supporting frame 50 is adopted to replace the wheel type structure of the first embodiment, the structure is relatively simple, and the overturning process is more stable.
As shown in fig. 10, the loading and unloading trolley includes a support frame 50, the support frame 50 is connected to a side surface of the trolley body 10, and a surface of the support frame 50 away from the trolley body 10 is an arc surface coinciding with a concentric circle. And a part of the third wheel 40 is replaced by the support frame 50, and the loading and unloading trolley further comprises a third wheel 40, so that in the overturning process of the loading and unloading trolley, the loading and unloading trolley is overturned by taking the first wheel 20 as a fulcrum, the arc surface of the support frame 50 lands, the loading and unloading trolley is continuously overturned, the third wheel 40 and the second wheel 30 land, and the loading and unloading trolley is pushed to move by the third wheel 40 and the second wheel 30, so that the container cage 1 on the loading and unloading trolley is pushed.
Accordingly, the size of the second wheel 30 is the same as the size of the third wheel 40 adjacent thereto.
Example four
As shown in fig. 11, the loading and unloading trolley further comprises a force increasing mechanism, the force increasing mechanism comprises a first force increasing link 91, a second force increasing link 92, a third force increasing link 93, force increasing wheels 94, a fourth force increasing link 95 and a support wheel 100, the first force increasing link 91 is pivotally connected with the bottom of the trolley body 10, the second force increasing link 92 is pivotally connected with the bottom of the trolley body 10, two ends of the third force increasing link 93 are respectively pivotally connected with the first force increasing link 91 and the second force increasing link 92, the joint of the first force increasing link 91 and the third force increasing link 93 is provided with one force increasing wheel 94, the joint of the second force increasing link 92 and the third force increasing link 93 is provided with one force increasing wheel 94, the fourth force increasing link 95 is fixedly connected with the second force increasing link 92, the fourth force increasing link 95 forms a pressing operation end, and the support wheel 100 is connected with the bottom of the trolley body 10. Thus, when the booster wheel 94 is located at the initial position, the height of the booster wheel 94 is the same as that of the first wheel 20 in the vertical direction, that is, the two booster wheels 94, the first wheel 20 and the support wheel 100 are all grounded, and the fourth booster link 95 is pressed to move the booster wheel 94 downward and leftward from the initial position, so that the distance between the booster wheel 94 and the design center of gravity G in the horizontal direction is reduced, and when the loading/unloading trolley is overturned, the booster wheel 94 close to the first wheel 20 is used as a fulcrum to turn over, and the overturning moment arm is shortened from L1 to L2, so that the loading/unloading trolley can be overturned more easily, and the overturning of the heavy container cage 1 can be realized.
Optionally, the first wheel 20, the second wheel 30, the third wheel 40, the support frame 50, the fourth wheel 60, and the support wheel 100 are used in pairs.
According to another aspect of the invention, there is provided a method of designing a loading trolley for loading and unloading a container cage 1, comprising the steps of: determining a design gravity center G according to the container cage 1, the goods in the container cage 1 and the weight of the loading and unloading trolley; calculating the value of L according to the design gravity center G, the size of the container cage 1 and the position of the universal wheel 3 of the container cage 1, and determining the position of the first wheel 20, wherein the horizontal position of the first wheel 20 is more deviated to the left side and the overturning force arm is smaller on the premise of being positioned at the right side of the universal wheel 3 of the container cage 1, and the position of the first wheel 20 is determined on the premise of not interfering with the universal wheel 3; making a concentric circle with the designed center of gravity G as the center of the circle, wherein the outer peripheral surface of the first wheel 20 is tangent to the concentric circle; the position of the second wheel 30 is determined, and the outer peripheral surface of the second wheel 30 is tangent to the concentric circles. Therefore, in the process that the loading and unloading trolley drives the container cage to synchronously overturn, the gravity direction g can be ensured to be positioned between the first wheel 20 and the second wheel 30, so that the stability of the overturning process of the loading and unloading trolley is ensured.
Further, after at least one third wheel 40 is added, the peripheral surface of each third wheel 40 is internally tangent to a concentric circle with the designed gravity center G as the center, so that when any two wheels are grounded to support the loading and unloading trolley, the direction of gravity G can be ensured to be always between the two wheels.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A handling trolley, for handling containerized cages (1), comprising:
a vehicle body (10);
a first wheel (20) connected to the bottom of the vehicle body (10);
a second wheel (30) connected to a side surface of the vehicle body (10);
the loading and unloading trolley is provided with a design gravity center G, the peripheral surfaces of the first wheel (20) and the second wheel (30) are internally tangent to a concentric circle with the design gravity center G as the center, the loading and unloading trolley overturns with the first wheel (20) as a fulcrum under the action of external force, and the second wheel (30) lands to reduce the height of the trolley body (10) in the vertical direction.
2. A handling trolley according to claim 1, characterised in that the design centre of gravity G is calculated on the basis of the weight of the handling trolley, the container cage (1) and the cargo in the container cage (1).
3. A handling trolley according to claim 1, characterised in that the angle α between the vertical and the opposite extension of the line connecting the centre of rotation of the second wheel (30) and the design centre of gravity G is greater than or equal to 30 ° and less than or equal to 130 °.
4. A handling trolley according to claim 1, characterised in that it further comprises at least one third wheel (40), said third wheel (40) being connected to a side of the body (10) and the outer circumference of said third wheel (40) being inscribed in said concentric circle and located between said first wheel (20) and said second wheel (30).
5. A handling trolley according to any of claims 1 to 4, characterised in that it further comprises a support frame (50), said support frame (50) being connected to the side of the body (10), and the surface of the support frame (50) remote from the body (10) being an arc surface coinciding with said concentric circles.
6. The handling cart of claim 1, further comprising:
a fourth wheel (60), the fourth wheel (60) is movably arranged at the bottom of the vehicle body (10) and is arranged at a distance from the first wheel (20), and the fourth wheel (60) has a first stop position and a second stop position along the direction away from the vehicle body (10);
when the fourth wheel (60) is located at the first stop position, the distance between the surface of the fourth wheel (60) away from the vehicle body (10) and the vehicle body (10) is equal to the distance between the surface of the first wheel (20) away from the vehicle body (10) and the vehicle body (10);
when the fourth wheel (60) is located at the second stop position, the distance between the surface of the fourth wheel (60) away from the vehicle body (10) and the vehicle body (10) is greater than the distance between the surface of the first wheel (20) away from the vehicle body (10) and the vehicle body (10).
7. A handling trolley according to claim 6, characterised in that it comprises a first link (71), a second link (72), a slide structure (73), a third link (74), a fourth link (75) and a slide (76), the first end of the first link (71) is hinged to the bottom of the body (10), the second end of the first link (71) is hinged to the first end of the second link (72), the fourth wheel (60) is arranged at the connection position of the first link (71) and the second link (72), the slide structure (73) is arranged at the bottom of the body (10), the third link (74) passes through the slide structure (73), and the first end of the third link (74) is hinged to the second end of the second link (72);
wherein a first end of the fourth link (75) is hinged with a second end of the third link (74), the slider (76) is rotatably arranged on the side surface of the vehicle body (10) and is in sliding connection with the fourth link (75), and the second end of the fourth link (75) forms a pressing operation end; or
The sliding block (76) is hinged to the second end of the third connecting rod (74), the first end of the fourth connecting rod (75) is connected with the sliding block (76) in a sliding mode, the middle of the fourth connecting rod (75) is connected with the side face of the vehicle body (10) in a pivoting mode, and the second end of the fourth connecting rod (75) forms a pressing operation end.
8. A handling trolley according to claim 7, characterised in that the body (10) comprises:
two fork plates (11) arranged at intervals;
a connecting plate (12) for connecting the two fork plates (11);
the two supporting tubes (13) are correspondingly connected with the two fork plates (11), the supporting tubes (13) are connected with first ends of the fork plates (11), each supporting tube (13) comprises a straight tube section (131) and a bending section (132), the first ends of the straight tube sections (131) are connected with the fork plates (11), the second ends of the straight tube sections (131) are connected with the bending sections (132), and the bending sections (132) extend towards the second ends of the fork plates (11);
the limiting pipe (14), the limiting pipe (14) is connected with the two supporting pipes (13), the limiting pipe (14) comprises a connecting section (141) and limiting sections (142) positioned at two ends of the connecting section (141), the connecting section (141) is connected with the two supporting pipes (13), and the limiting sections (142) extend towards the second end of the fork plate (11);
the supporting tube (13), the limiting tube (14) and the fork plate (11) enclose an accommodating space for accommodating the container cage (1).
9. A handling trolley according to claim 8, characterised in that the fork plate (11) has a hollow mounting space, the lower surface of the fork plate (11) is further provided with an escape opening (111) communicating with the mounting space, and the slide rail structure (73) comprises:
the shaft sleeve (731), the shaft sleeve (731) is fixedly connected with the fork plate (11) and is positioned at the avoidance opening (111);
an oilless bushing (732), the oilless bushing (732) being mounted within the bushing (731);
the baffle (733), the said baffle (733) is mounted to another end of the said axle sleeve (731);
the first end of the first connecting rod (71) is pivotally connected with the fork plate (11) and is located at the avoidance opening (111), the third connecting rod (74) comprises a stopping section (741) and a sliding section (742), the stopping section (741) is in stopping fit with the shaft sleeve (731), and the sliding section (742) slides in the oilless bushing (732).
10. The handling cart of claim 1, further comprising a force amplifier, said force amplifier comprising:
a first power link (91), the first power link (91) being pivotally connected to a bottom of the vehicle body (10);
a second power link (92), the second power link (92) being pivotally connected to a bottom portion of the vehicle body (10);
a third force-increasing connecting rod (93), wherein two ends of the third force-increasing connecting rod (93) are respectively connected with the first force-increasing connecting rod (91) and the second force-increasing connecting rod (92) in a pivoting manner;
the boosting wheel (94), the joint of the first boosting connecting rod (91) and the third boosting connecting rod (93) is provided with the boosting wheel (94), and the joint of the second boosting connecting rod (92) and the third boosting connecting rod (93) is provided with the boosting wheel (94);
and the fourth force-increasing connecting rod (95) is fixedly connected with the second force-increasing connecting rod (92), and the fourth force-increasing connecting rod (95) forms a pressing operation end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811261444.5A CN109334745B (en) | 2018-10-26 | 2018-10-26 | Loading and unloading trolley |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811261444.5A CN109334745B (en) | 2018-10-26 | 2018-10-26 | Loading and unloading trolley |
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| CN109334745A CN109334745A (en) | 2019-02-15 |
| CN109334745B true CN109334745B (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811261444.5A Active CN109334745B (en) | 2018-10-26 | 2018-10-26 | Loading and unloading trolley |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350710A (en) * | 2013-06-19 | 2013-10-16 | 广东明阳风电产业集团有限公司 | A dual-purpose trolley device for pouring and transporting barreled resin and curing agent |
| CN103786759A (en) * | 2012-10-31 | 2014-05-14 | 株式会社捷太格特 | Stair climbing vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3363787A (en) * | 1965-06-15 | 1968-01-16 | Kearney Persn Services A T | Hand truck |
| CN85203424U (en) * | 1985-08-12 | 1986-09-10 | 王泽印 | Trolley with a sector board |
| CN103231734B (en) * | 2013-04-26 | 2016-01-06 | 国网湖南省电力公司道县供电分公司 | A kind of handling dolly |
| CN108001493B (en) * | 2017-12-10 | 2020-03-10 | 北龙建设集团有限公司 | Building site rubble conveyer |
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2018
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786759A (en) * | 2012-10-31 | 2014-05-14 | 株式会社捷太格特 | Stair climbing vehicle |
| CN103350710A (en) * | 2013-06-19 | 2013-10-16 | 广东明阳风电产业集团有限公司 | A dual-purpose trolley device for pouring and transporting barreled resin and curing agent |
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