A forklift suitable for bumpy roads

Abstract

This invention relates to the technical field of forklifts, and specifically discloses a forklift suitable for bumpy roads, including a frame mechanism and a wheel mechanism. The frame mechanism includes a chassis, and the wheel mechanism includes a front wheel assembly located at the bottom of the front end of the chassis and a rear wheel assembly located at the bottom of the rear end of the chassis. The front wheel assembly includes two sets of first wheel frames, front wheels, and drive components located on both sides of the front end of the chassis. The first wheel frames are rotatably fixed to the chassis, and the front wheels are fixed to one end of the first wheel frames. The drive component can drive the first wheel frames to rotate, thereby raising or lowering the front wheels, making the front wheels suitable for bumpy roads. The rear wheel assembly includes a drive wheel, a balance wheel, and a connector. The connector is rotatably fixed to the rear end of the chassis. The drive wheel and balance wheel are located on both sides of the rear end of the chassis, and the drive wheel and balance wheel are connected to both ends of the connector. When passing over bumpy roads, the drive wheel and balance wheel will swing left and right, thereby adjusting their height.

Description

Technical Field

[0001] This invention relates to the technical field of forklifts, and specifically to a forklift suitable for bumpy roads. Background Technology

[0002] Most existing forklifts are used in factories or passenger stations. Since the infrastructure in factories and passenger stations is relatively complete and the ground is relatively flat, they run on flat ground and there are few bumps. Therefore, conventional forklifts generally do not have anti-bump design.

[0003] In existing technologies, if there is slight unevenness in the ground in a factory or other location, a spring or other elastic component is typically used to drive the wheels downwards, ensuring contact between the wheels and the ground to achieve stable operation. However, this method is only suitable for minor bumps. When using forklifts outdoors or even in the field, existing forklifts cannot move smoothly. This can lead to the forks tilting and goods falling, or the forklift's floor plate directly contacting the ground, causing the forklift to jam. Summary of the Invention

[0004] This invention addresses the aforementioned problems and aims to provide a forklift suitable for bumpy roads. The front wheels can be adjusted by driving a hydraulic cylinder to raise and lower, thereby adjusting the height of the two front wheels. At the same time, the rear wheels can also float left and right to adjust their height, so that the forks remain level and are suitable for bumpy roads.

[0005] To achieve the above objectives, the present invention provides a forklift suitable for bumpy roads, comprising:

[0006] A chassis mechanism, which includes a chassis and body components located on the chassis;

[0007] A gantry mechanism, comprising a gantry assembly located at the front end of the chassis and a fork assembly, the fork assembly being movably mounted on the gantry assembly;

[0008] A wheel mechanism including a front wheel assembly and a rear wheel assembly located at the bottom of the chassis, the front wheel assembly being located at the bottom of the front end of the chassis and the rear wheel assembly being located at the bottom of the rear end of the chassis;

[0009] The front wheel assembly includes two sets of first wheel frames, front wheels, and drive components located on both sides of the front end of the chassis. The first wheel frames are rotatably fixed to the chassis, the front wheels are fixed to the first wheel frames, and the drive components are connected to the first wheel frames and can drive the first wheel frames to rotate, thereby driving the front wheels to rise or fall.

[0010] The rear wheel assembly includes a drive wheel, a balance wheel, and a connector. The connector is rotatably fixed to the rear end of the chassis. The drive wheel and the balance wheel are located on opposite sides of the rear end of the chassis, and the drive wheel and the balance wheel are connected to both ends of the connector.

[0011] According to the forklift described above, suitable for bumpy roads, the first wheel frame is bent in shape, the first wheel frame has a first end, a second end, and a connecting part located between the first end and the second end, the connecting part is rotatably connected to the chassis via a pin, the front wheel is connected to the first end, and the drive unit is connected to the second end.

[0012] According to the forklift suitable for bumpy roads described above, the driving component is a driving cylinder, which is fixed on the chassis, and the piston rod of the driving cylinder can be connected to the second end and can drive the second end to rotate around the pin shaft, so as to drive the first end to rise or fall.

[0013] According to the forklift described above, suitable for bumpy roads, the front wheel includes two first wheel bodies and a second wheel frame. The two first wheel bodies are rotatably arranged on both ends of the second wheel frame in the front-rear direction. The two sides of the second wheel frame are rotatably connected to the inner side of the first end through wheel axles.

[0014] According to the forklift suitable for bumpy roads described above, the rear wheel assembly further includes an adapter seat, which is fixed to the rear end of the chassis, and the adapter seat has a rotating shaft arranged in the front-rear direction, and the connector is connected to the rotating shaft.

[0015] According to the forklift suitable for bumpy roads described above, the drive wheel includes a second wheel body and a drive wheel seat, the second wheel body is fixed on the drive wheel seat, the balance wheel includes a third wheel body and a third wheel frame, the third wheel body is fixed on the third wheel frame, the connecting member is a connecting plate, one end of the connecting plate is welded to the drive wheel seat, and the other end of the connecting plate is connected to the third wheel frame.

[0016] According to the forklift suitable for bumpy roads described above, the drive wheel further includes a compression spring, which is disposed above the drive wheel seat, and one end of the compression spring abuts against the top of the drive wheel seat to drive the second wheel body to abut against the ground.

[0017] According to the forklift described above, suitable for bumpy roads, the drive wheel further includes a steering motor, the second wheel body is rotatably connected to the drive wheel seat via a turntable, the steering motor is fixed on the drive wheel assembly, and the steering motor is connected to the turntable.

[0018] According to the forklift suitable for bumpy roads described above, the mast assembly includes a mast, a lifting frame, and a transverse frame. The lifting frame is mounted on the mast in a height-adjustable manner via a lifting cylinder. The lifting frame is provided with a rack arranged laterally. The transverse frame is provided with a gear adapted to the rack. The fork assembly is connected to the transverse frame via a fixing plate.

[0019] According to the forklift described above, suitable for bumpy roads, the transverse frame is equipped with a steering cylinder and a steering shaft. The steering shaft is arranged vertically on the transverse frame. The fixed plate is connected to the steering shaft, and the steering cylinder is connected to the steering shaft, and can drive the fixed plate to rotate through the steering shaft.

[0020] The present invention has the following beneficial effects: When passing through bumpy roads, if a depression appears on either side of the front of the forklift, the first wheel frame can be rotated by the drive cylinder. The rotation of the first wheel frame can drive the front wheel to rise or fall. When a depression appears, the front wheel can be driven to fall to support the forklift body. At the same time, if the rear wheel assembly of the forklift encounters a depression or a bulge, the drive wheel and balance wheel in the rear wheel assembly can float left and right, automatically adjusting the height of the drive wheel and balance wheel to meet the requirements of stable support, keeping the forks in a horizontal state and preventing the goods from falling. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the forklift in the embodiment;

[0022] Figure 2 This is a schematic diagram of the front wheel assembly structure in an embodiment;

[0023] Figure 3 This is a schematic diagram of the front wheel assembly structure in an embodiment;

[0024] Figure 4 This is a schematic diagram of the rear wheel assembly structure in an embodiment;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the fork assembly and mast assembly in an embodiment.

[0026] In the picture:

[0027] 1. Frame structure; 11. Chassis; 12. Body components;

[0028] 2. Gantry mechanism; 21. Gantry assembly; 211. Gantry; 212. Lifting frame; 212a. Rack; 213. Transverse frame; 213a. Gear; 213b. Steering shaft; 22. Fork assembly; 221. Fixing plate;

[0029] 3. Wheel mechanism; 31. Front wheel assembly; 311. First wheel frame; 312. Front wheel; 312a. First wheel body; 312b. Second wheel frame; 313. Drive cylinder; 32. Rear wheel assembly; 321. Drive wheel; 321a. Second wheel body; 321b. Drive wheel seat; 321c. Compression spring; 321d. Steering motor; 322. Balance wheel; 322a. Third wheel body; 322b. Third wheel frame; 323. Connecting plate; 324. Adapter seat; 324a. Shaft. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the present invention. However, the invention is not limited to these embodiments.

[0031] like Figure 1-5 As shown, a forklift suitable for bumpy roads includes a frame mechanism 1, a mast mechanism 2, and a wheel mechanism 3. The frame mechanism 1 includes a chassis 11 for load-bearing. The mast mechanism 2 is located at the front end of the chassis 11 and is used for picking up and dropping goods. The wheel mechanism 3 is located at the bottom of the chassis 11 and is used to drive the forklift to move as a whole. The wheel mechanism 3 includes a front wheel assembly 31 located at the bottom of the front end of the chassis 11 and a rear wheel assembly 32 located at the bottom of the rear end of the chassis 11. The front wheel assembly 31 includes two sets of first wheel frames 311, front wheels 312, and a drive component located on both sides of the front end of the chassis 11. The first wheel frames 311 are rotatably fixed to the chassis 11. The front wheels 312 are fixed to one end of the first wheel frames 311. The drive component is connected to the other end of the first wheel frames 311, and can be used to... The first wheel frame 311 is driven to rotate, causing the front wheel 312 to rise or fall, making the front wheel 312 suitable for bumpy roads. Meanwhile, the rear wheel assembly 32 includes a drive wheel 321, a balance wheel 322, and a connector. The connector is rotatably fixed to the rear end of the chassis 11. The drive wheel 321 and the balance wheel 322 are located on both sides of the rear end of the chassis 11, and the drive wheel 321 and the balance wheel 322 are connected to both ends of the connector. When passing over bumpy roads, the drive wheel 321 and the balance wheel 322 will swing left and right, thereby adjusting their height so that they can support the chassis 11 and keep the rear of the chassis 11 horizontal. In cooperation with the front wheel assembly 31, the chassis 11 and the gantry mechanism 2 are always kept in a horizontal state, which can smoothly pass over bumpy roads and prevent goods from falling off.

[0032] Specifically, the frame mechanism 1 also includes a body assembly 12, which is located on the chassis 11. The body assembly 12 includes components such as a frame, a cab, and a battery. The battery is used to power the drive wheels 321, and the cab is used to control the movement of the forklift as a whole.

[0033] Specifically, the gantry mechanism 2 includes a gantry assembly 21 located at the front end of the chassis 11 and a fork assembly 22. The fork assembly 22 is movably mounted on the gantry assembly 21. In this embodiment, to achieve three-way movement of the fork assembly 22, the gantry assembly 21 includes a gantry 211, a lifting frame 212, and a transverse frame 213. The lifting frame 212 is mounted on the gantry 211 via a lifting cylinder. The lifting frame 212 is provided with a rack 212a arranged laterally. The transverse frame 213 is provided with a gear 213a adapted to the rack 212a, and a steering cylinder and a steering shaft 213b are provided on the transverse frame 213. b is arranged vertically on the transverse frame 213. The fixed plate 221 is connected to the steering shaft 213b. The steering cylinder is connected to the steering shaft 213b and can drive the fixed plate 221 to rotate through the steering shaft 213b. That is, the lifting frame 212 can drive the fork assembly 22 to move up and down. The transverse frame 213 can drive the fork assembly 22 to move laterally. The steering shaft 213b can drive the fork assembly 22 to rotate, thereby realizing the three-way movement of the fork assembly 22, increasing the range of motion of the fork assembly 22, and facilitating the picking up of goods. The fork assembly 22 includes two forks symmetrically arranged on the fixed plate 221.

[0034] Furthermore, the first wheel frame 311 is bent in shape. The first wheel frame 311 has a first end, a second end, and a connecting part located between the first end and the second end. The connecting part is rotatably connected to the chassis 11 via a pin. The front wheel 312 is connected to the first end, and the driving member is connected to the second end. In this embodiment, the driving member is a driving cylinder 313. The driving cylinder 313 is fixed on the chassis 11, and the piston rod of the driving cylinder 313 can be connected to the second end. The first wheel frame 311 includes a first arm and a second arm. The first end is located on the first arm, and the second end is located on the second arm. The included angle between the first arm and the second arm is greater than 90° and less than 180°. Therefore, it is only necessary to drive the second arm to move forward or backward to drive the second arm and the second end to rotate around the pin, and drive the first arm and the first end to rotate around the pin. During the rotation, the front wheel 312 can be driven to perform lifting and lowering actions.

[0035] In this embodiment, the drive cylinders 313 on both sides of the chassis 11 are each independently controlled by a sensor, thereby enabling individual control of the two front wheels 312.

[0036] To ensure the stability of the front wheel 312, the front wheel 312 is configured to include two first wheel bodies 312a and a second wheel frame 312b. The two first wheel bodies 312a are rotatably arranged on both ends of the second wheel frame 312b in the front-rear direction. The two sides of the second wheel frame 312b are rotatably connected to the inner side of the first end through wheel axles. By setting two first wheel bodies 312a, the support distance of the front wheel 312 is increased, and the height floating between the two first wheel bodies 312a can be realized through the second wheel frame 312b.

[0037] To enable the left and right floating of the drive wheel 321 and the balance wheel 322, the rear wheel assembly 32 also includes an adapter 324, which is fixed to the rear end of the chassis 11. The adapter 324 has a rotating shaft arranged in the front-rear direction, and the connecting piece is connected to the rotating shaft to form a seesaw-like structure, thereby enabling the drive wheel 321 and the balance wheel 322 to float.

[0038] To enable the drive wheel 321 and the balance wheel 322 to connect with the connecting member, the drive wheel 321 includes a second wheel body 321a and a drive wheel seat 321b. The second wheel body 321a is fixed on the drive wheel seat 321b. The balance wheel 322 includes a third wheel body 322a and a third wheel frame 322b. The third wheel body 322a is fixed on the third wheel frame 322b. The connecting member is a connecting plate 323. One end of the connecting plate 323 is welded to the drive wheel seat 321b, and the other end of the connecting plate 323 is connected to the third wheel frame 322b.

[0039] To ensure the adhesion of the drive wheel 321, the drive wheel 321 also includes a compression spring 321c. The compression spring 321c is located above the drive wheel seat 321b, and one end of the compression spring 321c abuts against the top of the drive wheel seat 321b to drive the second wheel body 321a to abut against the ground, ensuring that the second wheel body 321a is always in contact with the ground and increasing its adhesion. Strong adhesion of the drive wheel 321 can ensure the driving effect.

[0040] To achieve automatic steering of the drive wheel 321, the drive wheel 321 also includes a steering motor 321d. The second wheel body 321a is rotatably connected to the drive wheel seat 321b via a turntable. The steering motor 321d is fixed on the drive wheel 321 group and is connected to the turntable. The steering motor 321d drives the turntable to rotate, which in turn drives the second wheel body 321a to rotate, thereby achieving the overall steering of the forklift.

[0041] The technical solution of the present invention has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of the present invention. The specific embodiments described herein are merely illustrative examples of the spirit of the present invention. Those skilled in the art to which this invention pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A forklift suitable for bumpy roads, characterized in that, include: A chassis mechanism, which includes a chassis and body components located on the chassis; A gantry mechanism, comprising a gantry assembly located at the front end of the chassis and a fork assembly, the fork assembly being movably mounted on the gantry assembly; A wheel mechanism including a front wheel assembly and a rear wheel assembly located at the bottom of the chassis, the front wheel assembly being located at the bottom of the front end of the chassis and the rear wheel assembly being located at the bottom of the rear end of the chassis; The front wheel assembly includes two sets of first wheel frames, front wheels, and drive components located on both sides of the front end of the chassis. The first wheel frames are rotatably fixed to the chassis, the front wheels are fixed to the first wheel frames, and the drive components are connected to the first wheel frames and can drive the first wheel frames to rotate, thereby driving the front wheels to rise or fall. The rear wheel assembly includes a drive wheel, a balance wheel, and a connector. The connector is rotatably fixed to the rear end of the chassis. The drive wheel and the balance wheel are located on opposite sides of the rear end of the chassis, and the drive wheel and the balance wheel are connected to both ends of the connector. The rear wheel assembly also includes an adapter seat, which is fixed to the rear end of the chassis, and the adapter seat has a rotating shaft arranged in the front-rear direction, and the connector is connected to the rotating shaft.

2. A forklift suitable for bumpy roads according to claim 1, characterized in that, The first wheel frame is bent in shape. The first wheel frame has a first end, a second end, and a connecting part located between the first end and the second end. The connecting part is rotatably connected to the chassis via a pin. The front wheel is connected to the first end, and the drive unit is connected to the second end.

3. A forklift suitable for bumpy roads according to claim 2, characterized in that, The driving component is a driving cylinder, which is fixed on the chassis. The piston rod of the driving cylinder can be connected to the second end and can drive the second end to rotate around the pin shaft, thereby causing the first end to rise or fall.

4. A forklift suitable for bumpy roads according to claim 2, characterized in that, The front wheel includes two first wheel bodies and a second wheel frame. The two first wheel bodies are rotatably arranged on both ends of the second wheel frame in the front-rear direction. The two sides of the second wheel frame are rotatably connected to the inner side of the first end through wheel axles.

5. A forklift suitable for bumpy roads according to claim 1, characterized in that, The drive wheel includes a second wheel body and a drive wheel seat, the second wheel body being fixed on the drive wheel seat. The balance wheel includes a third wheel body and a third wheel frame, the third wheel body being fixed on the third wheel frame. The connecting member is a connecting plate, one end of which is welded to the drive wheel seat, and the other end of which is connected to the third wheel frame.

6. A forklift suitable for bumpy roads according to claim 5, characterized in that, The drive wheel also includes a compression spring, which is disposed above the drive wheel seat, and one end of the compression spring abuts against the top of the drive wheel seat to drive the second wheel to abut against the ground.

7. A forklift suitable for bumpy roads according to claim 5, characterized in that, The drive wheel also includes a steering motor. The second wheel body is rotatably connected to the drive wheel seat via a turntable. The steering motor is fixed on the drive wheel and connected to the turntable.

8. A forklift suitable for bumpy roads according to claim 1, characterized in that, The gantry assembly includes a gantry, a lifting frame, and a transverse frame. The lifting frame is mounted on the gantry in a height-adjustable manner via a lifting cylinder. The lifting frame is provided with a rack arranged laterally. The transverse frame is provided with a gear adapted to the rack. The fork assembly is connected to the transverse frame via a fixing plate.

9. A forklift suitable for bumpy roads according to claim 8, characterized in that, The transverse frame is equipped with a steering cylinder and a steering shaft. The steering shaft is arranged vertically on the transverse frame. The fixed plate is connected to the steering shaft, and the steering cylinder is connected to the steering shaft and can drive the fixed plate to rotate through the steering shaft.

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