Triple wheel set driving assembly

Abstract

The utility model discloses a triple wheel set driving assembly, which comprises a balancing stand, a balancing shaft, a driving wheel set and two driven wheel sets, the driving wheel set is arranged at the central position of the bottom of the balancing stand, the two driven wheel sets are respectively arranged at the two ends of the bottom of the balancing stand, and the top of the balancing stand is hinged on a vehicle chassis through the balancing shaft; the driving wheel set comprises a driving wheel frame, hydraulic motors are installed at the two ends of the driving wheel frame respectively, speed reducers are installed at the output ends of the hydraulic motors, and driving wheels are connected to the speed reducers. A suspension oil cylinder and a wheel swing arm are arranged on the two sides of the driving wheel frame respectively, the top of the suspension oil cylinder is fixedly connected to the balance frame, and the wheel swing arm is rotationally connected to the balance frame through a pin shaft. The driven wheel set comprises a driven wheel frame, a plurality of driven wheels are rotationally connected to the driven wheel frame, and the driven wheel frame is rotationally connected to the balance frame through a pin shaft. The wheel set is simple and compact in structure and can provide power for the suspension balance device, and meanwhile the stability of the suspension balance device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle shock absorption, in particular to a triple-wheel group drive assembly. Background Art

[0002] The suspension balance device of a vehicle is a general term for the elastic connection device between the vehicle frame and the wheels, which can relieve the impact force received by the vehicle during driving and improve the driving and handling stability of the vehicle. For existing heavy-load AGVs, flatbed transporters and other transport vehicles, the adopted suspension balance device has a relatively complex structure, a cumbersome connection method with the vehicle chassis, and different load-bearing conditions for each wheel group. The adhesion degree between each wheel group in the suspension balance device and the ground is different, and it is easy to occur the situation that the wheel group in the suspension balance device slips, thus affecting the normal driving of the vehicle. Content of the Utility Model

[0003] The purpose of the utility model is to provide a triple-wheel group drive assembly, the wheel group of which has a simple and compact structure, can provide power for the suspension balance device, and improve the stability of the suspension balance device at the same time.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions: A triple-wheel group drive assembly includes a balance frame, a balance shaft, a driving wheel group and two driven wheel groups. The driving wheel group is installed at the central position of the bottom of the balance frame, and the two driven wheel groups are respectively installed at both ends of the bottom of the balance frame. The top of the balance frame is hinged to the vehicle chassis through the balance shaft; The driving wheel group includes a driving wheel frame, hydraulic motors are respectively installed at both ends of the driving wheel frame, a speed reducer is installed at the output end of the hydraulic motor, and a driving wheel is connected to the speed reducer; Suspension oil cylinders and wheel swing arms are respectively arranged on both sides of the driving wheel frame. The top of the suspension oil cylinder is fixedly connected to the balance frame, and the wheel swing arm is rotatably connected to the balance frame through a pin shaft; The driven wheel group includes a driven wheel frame, and a plurality of driven wheels are rotatably connected to the driven wheel frame. The driven wheel frame is rotatably connected to the balance frame through a pin shaft.

[0005] Optionally, a horizontally arranged vehicle frame pin shaft is rotatably connected to the driving wheel frame. The setting direction of the vehicle frame pin shaft is perpendicular to the axis of the driving wheel. One end of the vehicle frame pin shaft is hinged to the bottom of the suspension oil cylinder, and the other end of the vehicle frame pin shaft is fixedly connected to the wheel swing arm.

[0006] Optionally, the suspension oil cylinder includes a cylinder body and a piston. The piston is slidably connected in the cylinder body. A cylinder body seal ring is arranged at the connection of the cylinder body, a piston seal ring is arranged on the inner wall of the cylinder body, and a hydraulic space is formed by the end of the piston and the cylinder body. Hydraulic oil is added to the hydraulic space.

[0007] Optionally, there are four driven wheels. A wheel shaft is installed on the driven wheel frame. The four driven wheels are evenly rotatably connected to the wheel shaft through spherical roller bearings. Bearing sleeves are arranged on both sides of each spherical roller bearing, and an oil baffle is installed on the outside of the outermost driven wheel.

[0008] The triple-wheel set drive assembly of the present utility model has the following advantages:

[0009] (1) The driving wheel set provides power, and the driven wheel set improves the stability of the suspension device. The device has a simple and compact structure, which is beneficial to simplifying the structure of the vehicle chassis, facilitating connection with the vehicle chassis, and saving space.

[0010] (2) The driving wheel frame and the driven wheel frame can rotate in the left-right direction. When driving on an uneven road surface, both the left and right wheels can touch the ground, further improving the stability of the device.

[0011] (3) The driving wheel set can move up and down with the suspension cylinder, playing a role in shock absorption and buffering. And in a multi-wheel set system, the suspension cylinders of each wheel set can be interconnected through oil pipes to keep the internal pressure consistent, ensuring the balanced force of each wheel set and the stability of vehicle driving. Description of the Drawings

[0012] Figure 1 is the front view of the present utility model.

[0013] Figure 2 is the top view of the present utility model.

[0014] Figure 3 is the structural schematic diagram of the driving wheel set.

[0015] Figure 4 is the structural schematic diagram of the hydraulic motor.

[0016] Figure 5 is the installation schematic diagram of the suspension cylinder.

[0017] Figure 6 is the structural schematic diagram of the suspension cylinder.

[0018] Figure 7 is the structural schematic diagram of the driven wheel frame.

[0019] Figure 8 is the installation schematic diagram of the driven wheel. Detailed Embodiment

[0020] The following further describes the present utility model with reference to the drawings.

[0021] As Figures 1 - 5As shown in the figure, a triple-wheel set drive assembly includes a balance frame 1, a balance shaft 2, a driving wheel set 3, and two driven wheel sets 4. The driving wheel set 3 is installed at the central position of the bottom of the balance frame 1. The two driven wheel sets 4 are respectively installed at the front and rear ends of the bottom of the balance frame 1. The top of the balance frame 1 is hinged to the vehicle chassis through the balance shaft 2, and the balance frame 1 can rotate back and forth around the balance shaft 2. The driving wheel set 3 includes a driving wheel frame 5. Hydraulic motors 6 are respectively installed at the left and right ends of the driving wheel frame 5. A speed reducer 7 is installed at the output end of the hydraulic motor 6. A driving wheel 8 is connected to the speed reducer 7. The hydraulic motor 6 can drive the driving wheel 8 to rotate. Suspension cylinders 9 and wheel swing arms 10 are respectively arranged on the front and rear sides of the driving wheel frame 5. A horizontally arranged vehicle frame pin shaft 11 is rotatably connected to the driving wheel frame 5. The vehicle frame pin shaft 11 is arranged in the front-rear direction. One end of the vehicle frame pin shaft 11 is hinged to the bottom of the suspension cylinder 9, and the other end of the vehicle frame pin shaft 11 is fixedly connected to the wheel swing arm 10. The top of the suspension cylinder 9 is fixedly connected to the balance frame 1. The wheel swing arm 10 is rotatably connected to the balance frame 1 through a pin shaft, and the driving wheel frame 5 can rotate left and right.

[0022] As Figure 6 shown, the suspension cylinder 9 includes a cylinder block 11 and a piston 12. The piston 12 is slidably connected in the cylinder block 11. A cylinder block seal ring 13 is arranged at the connection of the cylinder block 11. A piston seal ring 14 is arranged on the inner wall of the cylinder block 11. The end of the piston 12 and the cylinder block 11 enclose a hydraulic space 15, and hydraulic oil is added to the hydraulic space 15. The driving wheel set 3 can move up and down along with the suspension cylinder 9, thus playing a role in buffering and shock absorption. In a multi-wheel set system, the suspension cylinders 9 of each wheel set can be interconnected through oil pipes to keep the internal pressure of each wheel set consistent and the force balanced, improving the driving stability of the vehicle.

[0023] As Figures 7 - 8 shown, the driven wheel set 4 includes a driven wheel frame 16. The driven wheel frame 16 is rotatably connected to the balance frame 1 through a pin shaft, and the driven wheel frame 16 can rotate left and right. Four driven wheels 17 are rotatably connected to the driven wheel frame 16. A wheel shaft 18 is installed on the driven wheel frame 16. The four driven wheels 17 are evenly rotatably connected to the wheel shaft 18 through spherical roller bearings 19. Bearing sleeves 20 are arranged on both sides of each spherical roller bearing 19. The bearing sleeves 20 play a role in positioning and limiting. Oil baffle plates 21 are installed on the outer sides of the left and right driven wheels 17 to prevent lubricating grease from leaking. The four driven wheels 17 can ensure the contact between the wheel set and the ground to a greater extent, improving the driving stability of the vehicle.

[0024] The embodiments described above are only partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A triple-wheel set drive assembly, characterized in that: It includes a balance frame, a balance shaft, a driving wheel set and two driven wheel sets. The driving wheel set is installed at the central position of the bottom of the balance frame, and the two driven wheel sets are respectively installed at both ends of the bottom of the balance frame. The top of the balance frame is hinged to the vehicle chassis through the balance shaft; The driving wheel set includes a driving wheel frame. Hydraulic motors are respectively installed at both ends of the driving wheel frame. A speed reducer is installed at the output end of the hydraulic motor, and a driving wheel is connected to the speed reducer; Suspension cylinders and wheel swing arms are respectively arranged on both sides of the driving wheel frame. The top of the suspension cylinder is fixedly connected to the balance frame, and the wheel swing arm is rotationally connected to the balance frame through a pin shaft; The driven wheel set includes a driven wheel frame, and several driven wheels are rotationally connected to the driven wheel frame. The driven wheel frame is rotationally connected to the balance frame through a pin shaft.

2. The triple-wheel set drive assembly according to claim 1, characterized in that: A horizontally arranged vehicle frame pin shaft is rotationally connected to the driving wheel frame. The setting direction of the vehicle frame pin shaft is perpendicular to the axis of the driving wheel. One end of the vehicle frame pin shaft is hinged to the bottom of the suspension cylinder, and the other end of the vehicle frame pin shaft is fixedly connected to the wheel swing arm.

3. The triple-wheel set drive assembly according to claim 1, characterized in that: The suspension cylinder includes a cylinder body and a piston. The piston is slidably connected in the cylinder body. A cylinder body seal ring is arranged at the connection of the cylinder body, and a piston seal ring is arranged on the inner wall of the cylinder body. The end of the piston and the cylinder body enclose a hydraulic space, and hydraulic oil is added to the hydraulic space.

4. The triple-wheel set drive assembly according to claim 1, characterized in that: There are four driven wheels. A wheel shaft is installed on the driven wheel frame. The four driven wheels are evenly rotationally connected to the wheel shaft through spherical roller bearings. Bearing sleeves are arranged on both sides of each spherical roller bearing, and an oil baffle is installed on the outside of the outermost driven wheel.

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