CN106915714B - Industrial vehicle - Google Patents

Abstract

An industrial vehicle includes a vehicle body and a rear wheel assembly, a driving member is connected between the rear wheel assembly and the vehicle body, and the driving member is used to drive the rear wheel assembly to ascend or descend relative to the vehicle body, according to the industrial vehicle provided by the present invention. The vehicle can realize the adjustment of the rear wheel assembly in the height direction, which is beneficial to improve the passability of the whole vehicle on undulating road surfaces, especially when encountering obstacles, and improve the ability of industrial vehicle handling operations.

Description

an industrial vehicle

technical field

The invention belongs to the technical field of construction machinery, and in particular relates to an industrial vehicle.

Background technique

In industrial production, industrial vehicles are commonly used transportation tools for handling, pushing, pulling, lifting, stacking or stacking various goods. For example, an electric pallet stacker is an industrial vehicle. In the prior art, the rear wheel assembly of the electric pallet stacker is fixedly connected with the body, and the body cannot be adjusted in the height direction. Therefore, the rear wheel assembly is not adjustable in height. The direction is also not adjustable, which will affect the passability of the vehicle, especially when it encounters obstacles.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an object of the present invention is to propose an industrial vehicle.

The industrial vehicle provided according to the present invention includes a vehicle body and a rear wheel assembly, a driving member is connected between the rear wheel assembly and the vehicle body, and the driving member is used to drive the rear wheel assembly to ascend or descend relative to the vehicle body.

According to the industrial vehicle provided by the present invention, the rear wheel assembly can be adjusted in the height direction, which is beneficial to improve the passability of the entire vehicle on undulating road surfaces, especially when encountering obstacles, and improves the handling capacity of the industrial vehicle.

In addition, the industrial vehicle according to the above embodiments of the present invention may also have the following additional technical features:

Optionally, the driving member is a double-acting oil cylinder, and two ends of the double-acting oil cylinder are respectively connected to the vehicle body and the rear wheel assembly, so as to drive the rear wheel assembly to ascend or descend relative to the vehicle body.

Optionally, both ends of the double-acting oil cylinder are respectively rotatably connected with the vehicle body and the rear wheel assembly.

Optionally, a guide device is also included, and the guide device is used to guide the ascending or descending of the rear wheel assembly.

Optionally, the guide device includes a guide rail provided on the vehicle body and a protruding part provided on the rear wheel assembly, the protruding part is adapted to the guide rail and the protruding part can slide in the guide rail.

Optionally, the guide rails are located on the left and right sides of the vehicle body and are oppositely arranged, and the protruding parts are located on the left and right sides of the rear wheel assembly and arranged oppositely.

Optionally, the double-acting oil cylinder includes a rod cavity and a rodless cavity, the rod cavity and the rodless cavity are respectively located on both sides of the piston of the double-acting oil cylinder, and the rod cavity is pressurized. When the pressure of the rodless cavity is reduced, the double-acting oil cylinder is shortened, and the rodless cavity is pressurized when the pressure of the rod-bearing cavity is reduced, so that the double-acting oil cylinder is extended.

Optionally, a control device is also included, and the control device controls the expansion and contraction of the double-acting oil cylinder.

Optionally, the rear wheel assembly includes: a driving wheel and a balance wheel respectively disposed on the left and right sides of the vehicle body.

Optionally, a power device is also included, the power device is fixedly connected with the rear wheel assembly, and the rear wheel assembly of the power device ascends or descends.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic structural diagram of an industrial vehicle in the prior art.

FIG. 2 is a schematic structural diagram of an industrial vehicle according to an embodiment of the present invention.

3 is a schematic structural diagram of a rear wheel assembly according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a vehicle body according to an embodiment of the present invention.

5 is a schematic structural diagram of a double-acting oil cylinder according to an embodiment of the present invention.

6 is a hydraulic schematic diagram of a double-acting oil cylinder according to an embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description The present invention and simplified description do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal communication between two elements or the interaction relationship between the two elements, unless otherwise explicitly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The industrial vehicle improved by the present invention is a commonly used means of transportation, and the electric pallet stacker is a kind of industrial vehicle. As shown in FIG. 1, the structural schematic diagram of the industrial vehicle in the prior art includes a body 1 and a rear wheel assembly 2, The body 1 is fixedly connected with the rear wheel assembly 2, and the position of the body 1 in the whole vehicle is not adjustable, that is to say, the body 1 cannot be adjusted in the height direction, therefore, the rear wheel assembly 2 is also not adjustable in the height direction. Adjusted, this will affect the passability of the whole vehicle, especially when it encounters obstacles.

To this end, the present invention provides an industrial vehicle, as shown in FIG. 2 , a schematic structural diagram of the industrial vehicle provided by the present invention. An industrial vehicle includes a body 1 and a rear wheel assembly 2 . The rear wheel assembly 2 is connected to the body. A driving member 3 is connected between the 1 , and the driving member 3 is used to drive the rear wheel assembly 2 to ascend or descend relative to the vehicle body 1 .

According to the industrial vehicle provided by the present invention, as shown in the schematic structural diagram of the rear wheel assembly as shown in FIG. 3 , the rear wheel assembly 2 includes a driving wheel 21 , a balance wheel 22 and a mounting assembly 23 respectively disposed on the left and right sides of the vehicle body. The wheel 21, the balance wheel 22 and the mounting assembly 23 for fixing the balance wheel 22 and the driving wheel 21 constitute the main part of the rear of the vehicle. With the adjustment of the rear wheel assembly 2 in the height direction, the main part of the rear of the vehicle is The driving wheel 21 and the balance wheel 22 can form a certain gap with the ground, which is beneficial to improve the passability of the whole vehicle on the undulating road surface, especially when encountering obstacles, and improve the ability of industrial vehicle handling operations.

In an embodiment of the present invention, as shown in FIGS. 2 and 5 , the driving member 3 is a double-acting oil cylinder 30 , and two ends of the double-acting oil cylinder 30 are respectively connected to the vehicle body 1 and the rear wheel assembly 2 to drive the The rear wheel assembly 2 is raised or lowered relative to the vehicle body.

The double-acting oil cylinder 30 includes a piston 31 and a cylinder block 32. The protruding end of the piston 31 is connected to one of the vehicle body 1 and the rear wheel assembly 2, and one end of the cylinder block 32 is connected to the vehicle body 1 and the rear wheel assembly. 2 of the other connections.

Both ends of the double-acting oil cylinder 30 are rotatably connected to the vehicle body 1 and the rear wheel assembly 2 respectively, that is to say, the protruding end of the piston 31 is rotatably connected to one of the vehicle body 1 and the rear wheel assembly 2 Connected, one end of the cylinder block 32 is rotatably connected with the other of the vehicle body 1 and the rear wheel assembly 2 .

In one embodiment, the rear wheel assembly 2 is provided with a first lug 24, the first lug 24 can be disposed on the mounting assembly 23 and extend upward, and the first lug 24 can be provided with a through hole, double-acting One end of the oil cylinder 30 can be hinged at the through hole of the first lug 24. Alternatively, there can be two first lugs 24, and one end of the double-acting oil cylinder 30 can be hinged to the two first lugs 24 through a pin. between.

As shown in FIG. 4 , the body 1 is provided with a second lug 11. The second lug 11 can be disposed on the body 1 and extend toward the rear of the vehicle. The second lug 11 can be provided with a through hole. One end of the acting oil cylinder 30 can be hinged at the through hole of the second lug 11, optionally, there can be two second lugs 11, and one end of the double-acting oil cylinder 30 can be hinged to the two second lugs through a pin. between 11.

The vehicle body 1 forms an accommodating cavity backward, and the accommodating cavity is used for accommodating the rear wheel assembly 2, and the rear wheel assembly 2 can ascend or descend in the accommodating cavity. Therefore, the accommodating cavity can be set to be open at the bottom. A semi-closed cavity, the lower part of the accommodating cavity is provided with an opening suitable for the rear wheel assembly 2 to pass through. Of course, the upper part of the accommodating cavity can be closed or open as required.

The industrial vehicle further includes a guide device for guiding the ascent or descent of the rear wheel assembly 2 . Because both ends of the double-acting oil cylinder 30 are rotatably connected to the vehicle body 1 and the rear wheel assembly 2 respectively, the rear wheel assembly 2 must be guided to rise and fall, so that the rear wheel assembly 2 can be adjusted in height on a preset trajectory.

In one embodiment, the guide device includes a guide rail 12 provided on the vehicle body 1 and a protruding portion 25 provided on the rear wheel assembly 2 , the protruding portion 25 is adapted to the guide rail 12 and the protruding portion is 25 can slide within the guide rail 12 . The cooperation of the protruding portion 25 and the guide rail 12 enables the rear wheel assembly 2 to perform height adjustment on a preset track.

The guide rails 12 are located on the left and right sides of the vehicle body 1 and are oppositely arranged, to be precise, the guide rails 12 are located on the left and right inner sides of the vehicle body 1 , and the protruding parts 25 are located on the left and right sides of the rear wheel assembly 2 and are arranged oppositely, exactly In other words, the protruding portions 25 are located on the left and right outer sides of the rear wheel assembly 2 , and the positions of the protruding portions 25 on the same side and the guide rails 12 are in a one-to-one correspondence.

Certainly, other forms of modifications can also be made to the guiding device, but it should be understood that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention. For example: the position of the guide rail 12 and the protruding part 25, or the use of the matching of the track and the roller, etc.

As shown in FIG. 5 , the cylinder body 32 of the double-acting oil cylinder 30 includes a rod cavity 321 and a rodless cavity 322 . The rod cavity 321 and the rodless cavity 322 are respectively located in the piston of the double-acting oil cylinder 30 On both sides of 31, when the rod chamber 321 is pressurized, the rodless chamber 322 is depressurized, and the extension end of the piston 31 is shortened, so that the double-acting oil cylinder 30 is shortened, and the rod chamber 321 is lowered. When the rodless chamber 322 is pressurized, the extending end of the piston 31 is extended, so that the double-acting oil cylinder 30 is extended.

As shown in FIG. 6 , the rod cavity 321 and the rodless cavity 322 can be communicated with the oil tank 302 through the reversing valve 301, so that when one of the rod cavity 321 and the rodless cavity 322 flows into high-pressure oil, the rod cavity 321 and the rod cavity 322 The other one of the rodless chambers 322 flows out high pressure oil, that is, the rodless chamber 322 is depressurized when the rodless chamber 321 is pressurized, and the rodless chamber 322 is pressurized when the rodd chamber 321 is depressurized.

Specifically, as shown in FIG. 6 , the reversing valve 301 may be a three-position four-way electromagnetic reversing valve, and the reversing valve 301 may include a first valve port 303 , a second valve port 304 , a third valve port 305 and a fourth valve port 305 . The valve port 306, and the reversing valve 301 can be changed between the first position, the second position and the third position. When the reversing valve 301 is in the first position, the oil enters the fourth valve port 306 through the first valve port 303 and exits the fourth valve port 306, while the oil enters the second valve port 304 through the third valve port 305 and exits; When the reversing valve 301 is in the third position, the first valve port 303, the second valve port 304, the third valve port 305 and the fourth valve port 306 are not connected; when the reversing valve 301 is in the third position, the oil flows from the first valve port 303 to the third valve port 303. The valve port 305 exits, and the oil enters the second valve port 304 through the fourth valve port 306 and exits.

As shown in FIG. 6, the rod chamber 321 can be connected to the third valve port 305, the rodless chamber 322 can be connected to the fourth valve port 306, the first valve port 303 and the second valve port 304 can both be connected to the fuel tank 302, And a check valve 307 for feeding oil toward the first valve port 303 may be connected between the first valve port 303 and the oil tank 302 .

When the reversing valve 301 is in the first position, the rodless cavity 322 is fed with oil and pressurized, and the rod cavity 321 is discharged with oil and depressurized, so that the double-acting oil cylinder 30 can be extended; when the reversing valve 301 is in the third position, no The rod cavity 322 discharges oil to depressurize, and the rod cavity 321 enters oil to pressurize, so that the double-acting oil cylinder 30 is shortened.

The industrial vehicle further includes: a control device that controls the expansion and contraction of the double-acting oil cylinder 30 . The control device can control the opening and closing of the valve port of the oil circuit and the conversion of the direction of the oil circuit, so as to realize the telescopic control of the double-acting oil cylinder 30 . When the rear wheel assembly of the industrial vehicle encounters an obstacle, the control device controls the reversing valve 301 to be in the third position, the oil flows from the first valve port 303 to the third valve port 305 and the oil flows from the fourth valve port 306 Into the second valve port 304 and out, the rodless cavity 322 discharges oil to depressurize, and the rod cavity 321 enters the oil to pressurize, so that the double-acting cylinder 30 is shortened. When the rear wheel assembly 2 is lifted, the driving wheel 21 and the balance wheel 22 can form a certain gap with the ground, so that the whole vehicle can pass smoothly; when the rear wheel assembly of the industrial vehicle passes the obstacle, the control device controls the reversing valve 301 In the first position, the oil enters the fourth valve port 306 through the first valve port 303, and the oil enters the second valve port 304 through the third valve port 305 and exits. The oil is depressurized so that the double-acting cylinder 30 is extended, the rear wheel assembly 2 is depressed, and the driving wheel 21 and the balance wheel 22 are returned to their normal positions.

The double-acting oil cylinder 30 is telescopic and stable, can generate a large moment, and is suitable for raising and lowering the rear wheel assembly 2 .

The industrial vehicle provided by the present invention further includes: a power unit, the power unit 4 is fixedly connected with the rear wheel assembly 2 , and the power unit 4 lifts or descends the rear wheel assembly 2 . In this way, the rear structure of the industrial vehicle is completely lifted, which further improves the passability of the entire vehicle. In one embodiment, the power unit 4 includes a drive motor (not shown) and a tiller 41 .

The accommodating cavity can also accommodate a drive motor, the accommodating cavity plays a role of protecting the driving motor and the rear wheel assembly 2, and the accommodating cavity is beneficial to the aesthetics of the whole vehicle.

The industrial vehicle provided by the present invention further includes a gantry 5 and a fork 6, the gantry 5 is fixedly connected with the vehicle body 1, and the gantry 5 can adjust the fork 6 in the height direction, thereby realizing the stacking of goods .

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (7)

1. An industrial vehicle, comprising a body and a rear wheel assembly, characterized in that it also includes a double-acting oil cylinder and a guide device, one end of the double-acting oil cylinder is rotatably connected to the rear wheel assembly, and the other side of the double-acting oil cylinder is rotatably connected. One end is rotatably connected with the side wall of the vehicle body to drive the rear wheel assembly to ascend or descend relative to the vehicle body, and the guide device is used to guide the ascending or descending of the rear wheel assembly. 2 . The industrial vehicle according to claim 1 , wherein the guide device comprises a guide rail provided on the vehicle body and a protruding portion provided on the rear wheel assembly, the protruding portion being adapted to the guide rail and being The protruding portion can slide in the guide rail. 3 . The industrial vehicle according to claim 2 , wherein the guide rails are located on the left and right sides of the vehicle body and are oppositely arranged, and the protruding parts are located on the left and right sides of the rear wheel assembly and arranged oppositely. 4 . 4 . The industrial vehicle according to claim 3 , wherein the double-acting oil cylinder comprises a rod cavity and a rodless cavity, and the rod cavity and the rodless cavity are respectively located in the pistons of the double-acting oil cylinder. 5 . On both sides of the cylinder, the rodless chamber is depressurized when the rod chamber is pressurized, so that the double-acting oil cylinder is shortened, and the rodless chamber is pressurized when the rod chamber is depressurized, so that all The double-acting cylinder is extended. 5 . The industrial vehicle according to claim 4 , further comprising a control device, the control device controlling the expansion and contraction of the double-acting oil cylinder. 6 . 6 . The industrial vehicle according to claim 5 , wherein the rear wheel assembly comprises: a driving wheel arranged on the left side of the vehicle body, a balance wheel arranged on the right side of the vehicle body, and a fixing wheel for fixing the balance wheel and the driving wheel. 7 . Install components. 7 . The industrial vehicle according to claim 6 , further comprising a power device, the power device is fixedly connected with the rear wheel assembly, and the power device lifts or lowers the rear wheel assembly. 8 .