A vehicle chassis with self-propelled and traction functions

Abstract

The utility model discloses a vehicle chassis with self-propelled and traction functions, comprising a vehicle frame, a universal wheel, a steering wheel, a second traction wheel and a traction device, wherein the universal wheel and the steering wheel are diagonally arranged at the four corners of the vehicle frame, and the second traction wheel is arranged at the front end of the vehicle frame; the traction device comprises a first traction wheel, a connecting rod assembly and an oil cylinder, wherein the piston rod of the oil cylinder is hinged on the vehicle frame, the first traction wheel is arranged at one end of the first connecting rod, and the other end of the first connecting rod is hinged on the vehicle frame through an axle pin, the connecting rod assembly is hinged with the oil cylinder and the first connecting rod, and the extension or shortening of the oil cylinder can make the first traction wheel fall or rise. The chassis is equipped with a steering wheel group with omnidirectional movement, which can make the chassis move omnidirectionally, and a set of auxiliary traction wheel groups is also installed on the vehicle frame. When the steering wheel fails or long-distance passive traction is required, the auxiliary traction wheel group can be lowered to make the steering wheel off the ground and be towed by a tractor for walking, and when self-propelled walking is required, the traction wheel can be retracted without affecting normal walking.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics automation, in particular to a vehicle chassis with self-propelled walking and traction functions. Background Art

[0002] At present, some steering wheel mechanisms with omnidirectional movement are widely used in the AGV industry. They can move omnidirectionally in factories or on good outdoor roads, but some faults are inevitable during use. For example, if the steering wheel fails and cannot move, the vehicle will stop in place and need to be moved away with the help of hoisting or other tools. Especially outdoors, when hoisting is inconvenient, it can only be moved away after the fault is eliminated, which seriously affects work. Utility Model Content

[0003] The utility model aims to solve the defects in the prior art and provides a vehicle chassis with self-propelled and traction functions.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A vehicle chassis with self-propelled and traction functions comprises a vehicle frame, a universal wheel, a steering wheel, a second traction wheel and a traction device, wherein the universal wheel and the steering wheel are diagonally arranged at the four corners of the vehicle frame, and the second traction wheel is arranged at the front end of the vehicle frame; the traction device comprises a first traction wheel, a connecting rod assembly and an oil cylinder, the piston rod of the oil cylinder is hinged on the vehicle frame, the first traction wheel is arranged at one end of the first connecting rod, and the other end of the first connecting rod is hinged on the vehicle frame through a pin shaft, the connecting rod assembly is hinged to the oil cylinder and the first connecting rod, and the extension or shortening of the oil cylinder can make the first traction wheel descend or rise.

[0006] Specifically, a traction seat is arranged at the front end of the frame, the second traction wheel is arranged at the bottom of the traction seat, and a forklift control handle is arranged on the top of the traction seat.

[0007] Specifically, the connecting rod assembly includes a connecting rod 2 hinged to the middle part of the connecting rod 1, the other end of the connecting rod 2 is hinged to the connecting rod 3, the other end of the connecting rod 3 is hinged to the frame through an axle pin 2, the connection between the pin 2 and the connecting rod 3 is a key connection, and the axle pin 2 passes through the frame.

[0008] Specifically, the connecting rod assembly also includes a connecting rod five, one end of which is hinged to the upper part of the traction seat, and the other end of the connecting rod five is hinged to the frame through a pin shaft three. It also includes a connecting rod four, one end of which is hinged to the lower part of the traction seat, and the other end is hinged to the ear shaft of the cylinder barrel of the cylinder.

[0009] Specifically, a hinge point is provided in the middle of the connecting rod 4, the hinge point is fixed to the frame through a pin shaft 2, and the hinge point and the pin shaft 2 are connected through a key.

[0010] Specifically, the forklift control handle is provided with an operation button for controlling the vehicle to move automatically, and a personnel pedal and a traction head are fixedly installed in front of the traction seat.

[0011] Based on the above technical solution, the following technical effects can be produced:

[0012] The utility model provides a vehicle chassis with self-propelled and traction functions. When self-propelled is required, the vehicle is powered on, and the vehicle is operated to move by a button arranged on a forklift control handle. The steering wheel has a steering function, and the diagonally arranged steering wheel and universal wheel can realize omnidirectional movement of the vehicle; when traction is required, the vehicle is powered on, and the oil cylinder is extended by operating the button arranged on the forklift control handle, and the oil cylinder drives the third connecting rod to rotate around the frame. Due to the effect that the traction seat, the fourth connecting rod, the fifth connecting rod and the frame itself form a parallelogram, the traction seat can be lowered and raised with the extension and contraction of the oil cylinder; at the same time, due to the extension and contraction of the oil cylinder, the connecting rod four is driven to rotate around the frame, and under the action of the second pin and the key transmission, the connecting rod three is also rotated around the frame, driving the second connecting rod to move, and the second connecting rod drives the first connecting rod to rotate, so that the traction wheel moves up and down. That is, when the oil cylinder is extended, the first and second traction wheels move toward the ground, the whole vehicle can be lifted up, and connected to the traction head through the traction rod of the tractor for towing; when the oil cylinder is shortened, the traction wheels are retracted, and the steering wheel and universal wheel touch the ground, solving the problem that the vehicle cannot move due to steering wheel failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the chassis structure of the utility model;

[0014] Figure 2 This is a side view of the traction wheel system shaft of the utility model;

[0015] Figure 3 It is a schematic diagram of the frame structure of the utility model.

[0016] In the figure, 1-frame, 2-universal wheel, 3-pin shaft 1, 4-steering wheel, 5-connecting rod 1, 6-traction wheel 1, 7-connecting rod 2, 8-connecting rod 3, 9-pin shaft 2, 10-pin shaft 3, 11-personnel pedal, 12-traction head, 13-traction seat, 14-forklift control handle, 15-connecting rod 4, 16-connecting rod 5, 17-oil cylinder, 18-traction wheel 2. DETAILED DESCRIPTION

[0017] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0018] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 3 As shown, a vehicle chassis with self-propelled and traction functions includes a frame 1, a universal wheel 2, a steering wheel 4, a traction wheel 18 and a traction device, wherein the universal wheel 2 and the steering wheel 4 are diagonally arranged at the four corners of the frame 1, and the traction wheel 18 is arranged at the front end of the frame 1; the traction device includes a traction wheel 16, a connecting rod assembly and a cylinder 17, the piston rod of the cylinder 17 is hinged on the frame 1, the traction wheel 16 is arranged at one end of a connecting rod 15, and the other end of the connecting rod 15 is hinged on the frame 1 through an axle pin 3, the connecting rod assembly is hinged to the cylinder 17 and the connecting rod 15, and the extension or shortening of the cylinder 17 can make the traction wheel 16 descend or rise.

[0022] As an optional or preferred solution, a traction seat 13 is disposed at the front end of the vehicle frame 1 , the traction wheel 18 is disposed at the bottom of the traction seat 13 , and a forklift control handle 14 is disposed on the top of the traction seat 13 .

[0023] An optional or preferred solution, the connecting rod assembly includes a connecting rod 2 7 hinged to the middle part of the connecting rod 1 5, the other end of the connecting rod 2 7 is hinged to the connecting rod 3 8, the other end of the connecting rod 3 8 is hinged to the frame 1 through an axle pin 2 9, the connection between the pin 2 9 and the connecting rod 3 8 is a key connection, and the axle pin 2 9 passes through the frame 1.

[0024] An optional or preferred solution, the connecting rod assembly also includes a connecting rod 5 16 having one end hinged to the upper portion of the traction seat 13, the other end of the connecting rod 5 16 being hinged to the frame 1 through an axle pin 3 10, and also includes a connecting rod 4 15, one end of the connecting rod 4 15 being hinged to the lower portion of the traction seat 13, and the other end being hinged to the ear shaft of the cylinder barrel of the oil cylinder 17.

[0025] Optionally or preferably, a hinge point is provided in the middle of the connecting rod 4 15 , and the hinge point is fixed to the frame 1 through a pin 2 9 , and the hinge point and the pin 2 9 are connected by a key.

[0026] As an optional or preferred solution, the forklift control handle 14 is provided with an operation button for controlling the vehicle to move automatically, and a personnel pedal 11 and a traction head 12 are fixedly installed in front of the traction seat 13 .

[0027] The working principle of the vehicle chassis with self-propelled and traction functions provided by the utility model is as follows:

[0028] When self-propelled movement is required, the vehicle is powered on and the vehicle is moved by operating the buttons provided on the forklift control handle 14. The steering wheel 4 has a steering function, and the diagonally arranged steering wheel 4 and the universal wheel 2 can realize omnidirectional movement of the vehicle.

[0029] When towing is required, the vehicle is powered on, and the button set on the forklift control handle 14 is operated to extend the oil cylinder 17, and the oil cylinder 17 drives the connecting rod 4 15 to rotate the frame 1. Due to the effect of the parallelogram formed by the frame 1 itself, the connecting rods 15, 16 and the traction seat 13, the traction seat 13 will be lowered and raised with the extension and contraction of the oil cylinder 17; at the same time, due to the extension and contraction of the oil cylinder 17, the connecting rod 4 15 is driven to rotate around the frame 1, and under the action of the pin 2 9 and the key transmission, the connecting rod 3 8 also rotates around the frame 1, driving the connecting rod 2 7 to move, and the connecting rod 7 drives the connecting rod 1 5 to rotate around the shaft pin 1 3, so that the traction wheel 1 6 moves up and down. That is, when the oil cylinder is extended, the traction wheel 1 6 and the traction wheel 2 18 are all moved toward the ground, and the whole vehicle can be lifted up and connected to the traction head 12 through the traction rod of the tractor for traction; when the oil cylinder 17 is shortened, the traction wheel 1 16 and the traction wheel 2 18 are all retracted, and the steering wheel 4 and the universal wheel 2 touch the ground.

[0030] The utility model is described in detail above with reference to the accompanying drawings and embodiments, but the utility model is not limited to the above embodiments, and various changes can be made within the scope of ordinary technicians in the field without departing from the purpose of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope of protection of the utility model.

Claims

1. A vehicle chassis with self-propelled and traction functions, comprising a frame (1), a universal wheel (2), a steering wheel (4), a second traction wheel (18) and a traction device, characterized in that: The universal wheel (2) and the steering wheel (4) are arranged diagonally at four corners of the frame (1); the traction wheel (2) (18) is arranged at the front end of the frame (1); the traction device comprises a traction wheel (6), a connecting rod assembly and an oil cylinder (17); the piston rod of the oil cylinder (17) is hinged on the frame (1); the traction wheel (6) is arranged at one end of the connecting rod (5); the other end of the connecting rod (5) is hinged on the frame (1) through a pin (3); the connecting rod assembly is hinged to the oil cylinder (17) and the connecting rod (5); the extension or contraction of the oil cylinder (17) can cause the traction wheel (6) to descend or ascend.

2. A vehicle chassis with self-propelling and traction functions according to claim 1, characterized in that: A traction seat (13) is arranged at the front end of the vehicle frame (1), the second traction wheel (18) is arranged at the bottom of the traction seat (13), and a forklift control handle (14) is arranged on the top of the traction seat (13).

3. The vehicle chassis with self-propelled and traction functions according to claim 2, characterized in that: The connecting rod assembly comprises a second connecting rod (7) hinged to the middle of the first connecting rod (5), the other end of the second connecting rod (7) is hinged to the third connecting rod (8), the other end of the third connecting rod (8) is hinged to the frame (1) through a second pin (9), the connection between the second pin (9) and the third connecting rod (8) is a key connection, and the second pin (9) passes through the frame (1).

4. The vehicle chassis with self-propelled and traction functions according to claim 3, characterized in that: The connecting rod assembly further comprises a connecting rod five (16) having one end hinged to the upper part of the traction seat (13), the other end of the connecting rod five (16) being hinged to the vehicle frame (1) via a pin three (10), and further comprises a connecting rod four (15), one end of the connecting rod four (15) being hinged to the lower part of the traction seat (13), and the other end being hinged to the ear shaft of the cylinder barrel of the oil cylinder (17).

5. The vehicle chassis with self-propelled and traction functions according to claim 4, characterized in that: A hinge point is provided in the middle of the connecting rod 4 (15), and the hinge point is fixed to the vehicle frame (1) via a pin 2 (9), and the hinge point and the pin 2 (9) are connected via a key.

6. The vehicle chassis with self-propelled and traction functions according to claim 2, characterized in that: The forklift control handle (14) is provided with an operating button for controlling the vehicle to move automatically, and a personnel pedal (11) and a traction head (12) are fixedly mounted in front of the traction seat (13).

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