Independent suspension device for all-terrain transport vehicle

Abstract

The utility model discloses an independent suspension device for an all-terrain transport vehicle. The independent suspension device comprises a fixed flange, a connecting rod pin shaft, a shock absorber, a lower flange support, a lower pin shaft, a rocker arm connecting rod, an upper pin shaft and an upper flange support. The independent suspension devices respectively correspond to four wheels of the all-terrain transport vehicle and independently act on the movement of each wheel; according to the independent suspension device designed by the utility model, independent suspension support of the chassis of the all-terrain transport vehicle is realized, and the control performance of the vehicle is obviously improved.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary transportation of coal mines, in particular to an independent suspension device for an all-terrain transport vehicle. Background Art

[0002] The underground tunnel environment of coal mines is complex, with bumpy roads or obstacles. When the transport vehicle is driving on uneven roads, the wheels are not in full contact with the ground, which will cause the vehicle to be unstable or even slip. The all-terrain transport vehicle is powered by four-wheel independent drive, which needs to ensure that each wheel has sufficient contact with the ground to provide better traction and stability in complex terrain. Independent suspension devices are widely used in various vehicles, including passenger cars, off-road vehicles, trucks, and all-terrain transport vehicles. This design can significantly improve the vehicle's handling performance and make it more adaptable to a variety of driving environments.

[0003] Independent suspension is a design of a transporter chassis suspension system, the main feature of which is that each wheel has an independent suspension device, and there is no direct connection between them. This is different from the traditional rigid suspension system, in which the wheels of a traditional transporter are connected to each other through a crossbeam or other connecting parts.

[0004] The chassis suspension system of the transport vehicle in the prior art has the following shortcomings:

[0005] (1) Non-independent suspension: The suspension systems of existing coal mine auxiliary transport wheeled vehicles are mostly non-independent suspension systems, which have insufficient road adaptability, resulting in reduced traction and vehicle slippage;

[0006] (2) High cost: The independent suspension system used in existing transport vehicles usually requires more parts and has high design and manufacturing costs, which increases the total cost of the vehicle and imposes a burden on the user;

[0007] (3) Difficulty in maintenance and repair: The existing suspension system involves multiple components, which makes it difficult to troubleshoot and repair system failures. Maintenance and repair may become more cumbersome and expensive, and the repair process requires professional skills and equipment.

[0008] (4) Space occupation: Existing suspension systems usually require more space, and the transport vehicle body is wider, which limits the internal space or loading space of the vehicle body in application. Utility Model Content

[0009] The purpose of the utility model is to provide an independent suspension device for an all-terrain transport vehicle. The independent suspension device is divided into three parts, namely a shock absorber, a rocker arm connecting rod and a flange bracket connected to the vehicle body, so as to realize independent suspension support for the chassis of the all-terrain transport vehicle.

[0010] In order to realize the above functions, the utility model designs an independent suspension device for an all-terrain transport vehicle, characterized in that the independent suspension device 2-2 comprises: a fixed flange 1-1, a connecting rod pin shaft 1-2, a shock absorber 1-3, a flange bracket lower 1-4, a lower pin shaft 1-5, a rocker arm connecting rod 1-6, an upper pin shaft 1-7, and a flange bracket upper 1-8; the independent suspension device 2-2 corresponds to the four driving wheel groups 2-1 of the all-terrain transport vehicle respectively, and acts independently on the movement of each driving wheel group 2-1;

[0011] The top of the fixed flange 1-1 and the top of the flange bracket 1-8 are respectively fixedly connected to the chassis body frame 2-3 of the all-terrain transport vehicle; one end of the rocker arm connecting rod 1-6 is a movable end, which is movably connected to the bottom of the fixed flange 1-1 through the connecting rod pin 1-2, so that the moving direction of the movable end of the rocker arm connecting rod 1-6 is axial rotation around the connecting rod pin 1-2; the other end of the rocker arm connecting rod 1-6 is a fixed end, which is fixedly connected to the driving wheel set 2-1;

[0012] The shock absorber 1-3 is a radially telescopic elastic element, located in the middle of the rocker arm connecting rod 1-6, and the installation direction of the shock absorber 1-3 is perpendicular to the rocker arm connecting rod 1-6. One end of the shock absorber 1-3 is movably connected to the bottom of the flange bracket 1-8 through the upper pin shaft 1-7, so that the movement direction of this end is axial rotation around the upper pin shaft 1-7; the middle part of the rocker arm connecting rod 1-6 has a downwardly extending fixed structure, the bottom of the fixed structure is fixedly connected to the bottom of the flange bracket 1-4, and the other end of the shock absorber 1-3 is movably connected to the top of the flange bracket 1-4 through the lower pin shaft 1-5, so that the movement direction of this end is axial rotation around the lower pin shaft 1-5.

[0013] As a preferred technical solution of the utility model: four screw holes are respectively arranged on the top of the fixing flange 1-1 and the top of the flange bracket 1-8, and the independent suspension device 2-2 is fixedly connected to the chassis body frame 2-3 of the all-terrain transport vehicle by bolts.

[0014] As a preferred technical solution of the utility model: shaft retaining ring grooves are provided at both ends of the connecting rod pin shaft 1-2 to achieve axial fixation of the connecting rod pin shaft 1-2.

[0015] As a preferred technical solution of the utility model: the shock absorber 1-3 includes an inner compression spring and an oil-gas spring connected in parallel.

[0016] As a preferred technical solution of the utility model: six bolt mounting holes are set at the fixed end of the rocker arm connecting rod 1-6, and the fixed end of the rocker arm connecting rod 1-6 is fixedly connected to the driving wheel set 2-1 by bolts.

[0017] As a preferred technical solution of the utility model: a plurality of reinforcing ribs are arranged inside the rocker arm connecting rod 1-6.

[0018] Beneficial effects: Compared with the prior art, the advantages of the utility model include:

[0019] 1. Most of the existing suspension systems of coal mine auxiliary transport wheeled vehicles are non-independent suspension systems, which have insufficient road adaptability, resulting in reduced traction and vehicle slippage. The independent suspension device designed in the utility model is used to connect and install the chassis drive wheel set and the chassis body frame of the all-terrain transport vehicle, which plays a shock-absorbing role, ensures that the drive wheel set is fully in contact with the ground, and improves the obstacle-crossing ability of the all-terrain transport vehicle.

[0020] 2. The suspension system used in existing transport vehicles usually requires more parts, and the design and manufacturing costs are high, which leads to an increase in the total cost of the vehicle and a burden on the user. The independent suspension device designed in the utility model has a simple structure, greatly reduces the number of parts, and reduces the cost.

[0021] 3. The existing suspension system involves multiple parts, which makes it difficult to troubleshoot and repair system failures. Maintenance and repair may become more cumbersome and expensive, and the repair process requires professional skills and equipment. The independent suspension device designed by the utility model has a simple structure, a simple and direct way to install parts, and is easy to disassemble and repair.

[0022] 4. Existing suspension systems usually require more space, and the transport vehicle body is relatively wide, which limits the internal space or loading space of the vehicle body in application. The independent suspension device designed by the utility model has a simple structure and a convenient installation method. By improving the structural strength of the parts, designing reinforcing ribs, and reducing the size of the parts, the external dimensions of the independent suspension device are reduced, and more effective internal space can be provided within the effective vehicle body load requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an independent suspension device for an all-terrain transport vehicle provided according to an embodiment of the utility model;

[0024] Figure 1 Middle: 1-1, fixed flange; 1-2, connecting rod pin; 1-3, shock absorber; 1-4, flange bracket lower; 1-5, lower pin; 1-6, rocker arm connecting rod; 1-7, upper pin; 1-8, flange bracket upper;

[0025] Figure 2 It is a schematic diagram of the integration of an independent suspension device and a vehicle body provided according to an embodiment of the utility model;

[0026] Figure 2 Middle: 2-1, driving wheel set; 2-2, independent suspension device; 2-3, chassis body frame;

[0027] Figure 3 It is a structural schematic diagram of a rocker arm connecting rod provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0029] The embodiment of the utility model provides an independent suspension device for an all-terrain transport vehicle, each wheel has its own suspension device, so that each wheel can respond independently to uneven road surface without being affected by other wheels. The independent suspension device is intended to provide effective shock absorption and stability, so that the all-terrain transport vehicle can adapt to a variety of terrains and working environments, ensure its smooth driving on uneven or complex terrain, and improve its sports performance and adaptability. The independent suspension device designed by the utility model has the advantages of simple structure, safety and reliability, and convenient assembly.

[0030] The independent suspension device is used for shock absorption of all-terrain transport vehicles. It is divided into three parts, namely the shock absorber, the rocker arm link and the flange bracket connected to the vehicle body. The three parts form a swing arm mechanism. The rocker arm link can adjust its position according to the wheel load. Figure 1 The specific structure of the independent suspension device 2-2 includes: a fixed flange 1-1, a connecting rod pin 1-2, a shock absorber 1-3, a flange bracket lower 1-4, a lower pin 1-5, a rocker arm connecting rod 1-6, an upper pin 1-7, and a flange bracket upper 1-8; the independent suspension device 2-2 corresponds to the four driving wheel groups 2-1 of the all-terrain transport vehicle respectively, and independently acts on the movement of each driving wheel group 2-1;

[0031] Among them, refer to Figure 2 Four screw holes are respectively arranged on the top of the fixing flange 1-1 and the top of the flange bracket 1-8, and the independent suspension device 2-2 is fixedly connected to the chassis body frame 2-3 of the all-terrain transport vehicle by high-strength bolts. One end of the rocker arm link 1-6 is a movable end, which is movably connected to the bottom of the fixing flange 1-1 through the connecting rod pin 1-2, so that the movement direction of the movable end of the rocker arm link 1-6 is axial rotation around the connecting rod pin 1-2; shaft retaining ring grooves are arranged at both ends of the connecting rod pin 1-2 to realize the axial fixation of the connecting rod pin 1-2; the other end of the rocker arm link 1-6 is a fixed end, and a bolt mounting hole is arranged, and the fixed end of the rocker arm link 1-6 is fixedly connected to the driving wheel set 2-1 by bolts;

[0032] The rocker link 1-6 is a key component of the independent suspension device 2-2, and the rocker link 1-6 and the shock absorber 1-3 form a lever. The shock absorber 1-3 acts on the middle position of the rocker link 1-6. The upper end of the rocker link 1-6 is the fulcrum of the lever, and is connected to the fixed flange 1-1 through the connecting rod pin 1-2 to achieve rotation. Six bolt mounting holes are designed at the lower end of the rocker link 1-6 for installing the all-terrain transport vehicle drive wheel set 2-1. The middle position of the rocker link 1-6 is used to install the shock absorber 1-3 to provide a balancing force. The rocker link 1-6 is welded with high-strength structural steel. Multiple reinforcing ribs are designed inside the rocker link 1-6 to improve the structural strength and prevent structural deformation under load. For the specific structure of the rocker link 1-6, refer to Figure 3 .

[0033] The shock absorber 1-3 is a radially telescopic elastic element, located in the middle of the rocker arm connecting rod 1-6, and the installation direction of the shock absorber 1-3 is perpendicular to the rocker arm connecting rod 1-6. One end of the shock absorber 1-3 is movably connected to the bottom of the flange bracket 1-8 through the upper pin shaft 1-7, so that the movement direction of this end is axial rotation around the upper pin shaft 1-7; the middle part of the rocker arm connecting rod 1-6 has a downwardly extending fixed structure, the bottom of the fixed structure is fixedly connected to the bottom of the flange bracket 1-4, and the other end of the shock absorber 1-3 is movably connected to the top of the flange bracket 1-4 through the lower pin shaft 1-5, so that the movement direction of this end is axial rotation around the lower pin shaft 1-5.

[0034] The shock absorber 1-3 includes an internal compression spring and an oil-gas spring connected in parallel. When the wheels of the all-terrain transport vehicle are impacted and vibrate during driving, the chassis body frame 2-3 of the transport vehicle and the wheels are vibrated and produce relative movement, the compression spring and the oil-gas spring piston in the shock absorber 1-3 move up and down, and the telescopic stroke of the shock absorber 1-3 changes with the wheel load force. The compression spring and the oil-gas spring in the shock absorber 1-3 are installed in parallel, and the compression spring can attenuate the vibration frequency of the transport vehicle during driving and improve the smoothness of the driving process. The oil-gas spring compresses to form a damping force, providing support force for the independent suspension device 2-2.

[0035] When the all-terrain transport vehicle is traveling on an uneven road surface, the independent suspension device 2-2 starts to work adaptively, and by adjusting the compression or extension stroke of the shock absorber 1-3, the angle of the rocker link 1-6 changes accordingly, and the wheel achieves a height change in the vertical direction, thereby adapting to the unevenness of the road surface.

[0036] The working mode of the independent suspension device designed by the utility model is as follows: the independent suspension device 2-2 is used to connect the driving wheel set 2-1 and the chassis body frame 2-3; the fixed flange 1-1 of the independent suspension device 2-2, the flange bracket 1-8 and the designated position of the chassis body frame 2-3 are fixedly connected by bolts, and the lower end position of the rocker arm connecting rod 1-6 of the independent suspension device 2-2 is fixedly connected to the driving wheel set 2-1 by bolts. Each driving wheel set 2-1 is installed with an independent suspension device 2-2 and works independently.

[0037] Figure 2 The figure shows a schematic diagram of the integrated installation of the independent suspension device designed by the utility model during the assembly of the whole vehicle, and this figure emphasizes the way in which the independent suspension device saves space by being integrated with the vehicle body inside the vehicle body.

[0038] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. An independent suspension device for an all-terrain transport vehicle, characterized in that: The independent suspension device (2-2) comprises: a fixed flange (1-1), a connecting rod pin shaft (1-2), a shock absorber (1-3), a flange bracket lower part (1-4), a lower pin shaft (1-5), a rocker arm connecting rod (1-6), an upper pin shaft (1-7), and a flange bracket upper part (1-8); the independent suspension device (2-2) corresponds to four driving wheel groups (2-1) of the all-terrain transport vehicle respectively, and acts independently on the movement of each driving wheel group (2-1); The top of the fixed flange (1-1) and the top of the flange bracket (1-8) are respectively fixedly connected to the chassis body frame (2-3) of the all-terrain transport vehicle; one end of the rocker arm connecting rod (1-6) is a movable end, which is movably connected to the bottom of the fixed flange (1-1) through a connecting rod pin (1-2), so that the moving direction of the movable end of the rocker arm connecting rod (1-6) is axial rotation around the connecting rod pin (1-2); the other end of the rocker arm connecting rod (1-6) is a fixed end, which is fixedly connected to the driving wheel set (2-1); The shock absorber (1-3) is a radially telescopic elastic element, which is located in the middle of the rocker arm connecting rod (1-6), and the installation direction of the shock absorber (1-3) and the rocker arm connecting rod (1-6) is perpendicular. One end of the shock absorber is movably connected to the bottom of the flange bracket (1-8) through an upper pin shaft (1-7), so that the movement direction of the end is axial rotation around the upper pin shaft (1-7); the middle of the rocker arm connecting rod (1-6) has a downwardly extending fixed structure, the bottom of the fixed structure is fixedly connected to the bottom of the flange bracket (1-4), and the other end of the shock absorber (1-3) is movably connected to the top of the flange bracket (1-4) through a lower pin shaft (1-5), so that the movement direction of the end is axial rotation around the lower pin shaft (1-5).

2. The independent suspension device for an all-terrain transport vehicle according to claim 1, characterized in that: Four screw holes are respectively arranged on the top of the fixing flange (1-1) and the top of the flange bracket (1-8), and the independent suspension device (2-2) is fixedly connected to the chassis body frame (2-3) of the all-terrain transport vehicle by bolts.

3. The independent suspension device for an all-terrain transport vehicle according to claim 1, characterized in that: Shaft retaining ring grooves are arranged at both ends of the connecting rod pin shaft (1-2) to achieve axial fixation of the connecting rod pin shaft (1-2).

4. The independent suspension device for an all-terrain transport vehicle according to claim 1, characterized in that: The shock absorber (1-3) comprises an inner compression spring and an oil-gas spring connected in parallel.

5. The independent suspension device for an all-terrain transport vehicle according to claim 1, characterized in that: The fixed end of the rocker arm connecting rod (1-6) is provided with six bolt mounting holes, and the fixed end of the rocker arm connecting rod (1-6) is fixedly connected to the driving wheel set (2-1) by means of bolts.

6. The independent suspension device for an all-terrain transport vehicle according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged inside the rocker arm connecting rod (1-6).

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