Axle assembly of mining vehicle

Abstract

The invention discloses a mining vehicle axle assembly which comprises an axle, motor holding plates are connected to the two sides of the axle through pin shafts correspondingly, hydraulic motors are connected into the motor holding plates, and the hydraulic motors are connected with wheels. The upper portion of the axle is connected with a shear spring, the top of the shear spring is connected with the frame, the axle is connected with a damper, and the other end of the damper inclines backwards and is connected with the frame. The back vertical face of the axle is connected with a hydraulic oil cylinder, the hydraulic oil cylinder is connected with the motor embracing plates through pin shafts, and a steering connecting rod is connected between the two motor embracing plates through pin shafts. The vertical pressure borne by the axle is buffered by arranging the shearing spring between the axle and the frame, and the transverse impact force borne by the axle can be buffered by connecting the shock absorber between the axle and the frame, so that the purpose of improving the shock absorption effect of the axle is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of mining vehicle equipment, and in particular relates to a mining vehicle axle assembly. Background Art

[0002] As an important component that bears the weight of the vehicle and provides power transmission, the performance of the axle assembly directly affects the driving stability and comfort of the vehicle. The traditional axle assembly usually includes a shock absorbing mechanism and a steering mechanism. The shock absorbing mechanism is used to reduce the impact of uneven road surface on the vehicle body and improve the comfort and stability of the vehicle. The steering mechanism is responsible for controlling the steering of the vehicle during driving.

[0003] The slag in the mine tunnel will be transported out of the mine tunnel by mining vehicles, and a lot of slag will be scattered on the ground of the mine tunnel. Some of the slag is relatively large in volume, and the space in the mine tunnel is very narrow. It is difficult for mining vehicles to avoid these large pieces of slag in the mine tunnel, and they can only drive over the slag. When the tire collides with the slag, the impact force will be fed back to the axle laterally and vertically, increasing the lateral impact and vertical load on the axle. The traditional axle shock absorption mechanism is difficult to cope with this impact force, and the shock absorption effect is not ideal, causing the axle to deform, making the mining vehicle unusable. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of unsatisfactory shock absorption effect when the axle is subjected to the impact force of slag during the driving of the mining vehicle in the above-mentioned background technology by arranging a shear spring and a shock absorber between the axle and the frame.

[0005] The specific technical solutions of the present invention are as follows: A mining vehicle axle assembly comprises an axle, wherein motor plates are pin-connected on both sides of the axle, a hydraulic motor is connected inside the motor plates, and wheels are connected to the hydraulic motor; a shear spring is connected to the upper part of the axle, the top of the shear spring is connected to a frame, a shock absorber is connected to the axle, and the other end of the shock absorber is tilted backward and connected to the frame; a hydraulic cylinder is connected to the rear face of the axle, the hydraulic cylinder is pin-connected to the motor plates, and a steering connecting rod is pin-connected between the two motor plates.

[0006] Furthermore, the vehicle axle comprises an upper bridge plate and a lower bridge plate, and the upper bridge plate and the lower bridge plate are fixedly connected together by a bridge frame vertical plate.

[0007] Furthermore, two bridge frame uprights are provided, a supporting plate is provided between the two bridge frame uprights, a fixed hinge ear is provided on the upper surface of the supporting plate, and the shock absorber is connected to the axle pin shaft via the fixed hinge ear.

[0008] Furthermore, the upper plate of the bridge frame is connected to the upper part of the motor holding plate through a steering pin shaft, and the lower plate of the bridge frame is connected to the lower part of the motor holding plate through a steering pin shaft.

[0009] Furthermore, the steering pin shaft sleeve is provided with a bearing, the inner ring of the bearing is fixedly connected to the steering pin shaft, and the outer ring of the bearing is fixedly connected to the motor holding plate.

[0010] Furthermore, the vehicle axle is provided with a reinforcing upright plate, wherein two reinforcing upright plates are provided, respectively close to two sides of the vehicle axle, and reinforcing ribs are connected between the reinforcing upright plates and the upper plate and the lower plate of the bridge frame.

[0011] Furthermore, the adjacent reinforcing vertical plates and the rear vertical surfaces of the bridge frame vertical plates are commonly connected with a second fixed hinge ear, and the hydraulic cylinder is connected to the axle pin shaft via the second fixed hinge ear.

[0012] Furthermore, the steering link is located in front of the axle, and both ends of the steering link are respectively connected to the motor plate pins on both sides.

[0013] Furthermore, a limiting shaft 1 is provided on the upper surface of the bridge frame upper plate, and the axle is connected to the frame via the limiting shaft 1.

[0014] Furthermore, a limit plate is fixedly connected between the supporting plate and the lower plate of the bridge frame. The limit plate is provided with a U-shaped hole. A pin shaft in the U-shaped hole is connected to the second limit shaft. The limit plate is connected to the frame through the second limit shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When a vehicle is driving in a mine tunnel and encounters a large piece of slag that needs to be crossed, the slag will exert a resistance on the wheels. This resistance is decomposed into lateral and vertical components. The lateral component of force is applied to the axle, causing the axle to bend and deform. In particular, when a mining vehicle hits a rock when turning, it will change the direction of travel or even skid. The vertical component of force is the vertical reaction force of the rock on the axle. If the mining vehicle is fully loaded, it will be subject to a greater vertical load, causing the axle to deform. The shock absorber and shear spring can respectively unload the vertical and lateral components of the axle, thereby improving the shock absorption effect. When a mining vehicle hits slag, it can protect the axle and prevent the axle from deforming, thereby bringing safety protection to the use of mining vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 2 A top view of an embodiment of the present invention; Figure 3 A front view of an embodiment of the present invention; Figure 4 is a front view of the axle in the embodiment of the present invention; Reference numerals: 1. Axle; 11. Upper plate of bridge frame; 111. Limiting shaft 1; 12. Lower plate of bridge frame; 13. Vertical plate of bridge frame; 14. Fixed hinge ear 1; 15. Fixed hinge ear 2; 16. Support plate; 17. Strengthening vertical plate; 18. Limiting plate; 181. U-shaped hole; 19. Limiting shaft 2; 2. Motor holding plate; 21. Hydraulic motor; 22. Wheel; 23. Steering pin shaft; 3. Shear spring; 4. Shock absorber; 5. Hydraulic cylinder; 6. Steering linkage. DETAILED DESCRIPTION

[0017] In order to better understand the purpose, structure and function of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0018] See also Figures 1 to 4 The present embodiment discloses a mining vehicle axle assembly, including an axle 1, motor plates 2 are respectively connected to the axle 1 by pins on both sides, a hydraulic motor 21 is connected inside the motor plates 2, the hydraulic motor 21 is connected to the wheels 22, and the hydraulic motor 21 provides power to the wheels 22; a shear spring 3 is connected to the upper part of the axle 1, and the top of the shear spring 3 is connected to the frame. When the axle 1 vibrates and is subjected to a vertical force component, the shear spring 3 can buffer the vibration, reduce the vertical load of the axle 1, and protect the axle 1 and the frame. The axle 1 is connected to a shock absorber 4, and the other end of the shock absorber 4 is tilted backward and connected to the frame. The connection method with an inclined angle can enable the shock absorber 4 to suppress the rebound generated by the shear spring 3 after absorbing the vibration, so that the amplitude of the vertical vibration of the axle 1 is smaller, and on the other hand, it can also absorb the lateral stress on the axle 1 to prevent the axle 1 from deforming and bending, thereby affecting the driving of the mining vehicle; the back side of the axle 1 is connected to a hydraulic cylinder 5, and the hydraulic cylinder 5 is connected to the motor plate 2 with a pin shaft. The steering of the wheel 22 can be controlled by the hydraulic cylinder 5, and a steering connecting rod 6 is connected to the pin shaft between the two motor plates 2, so that the wheels 22 on both sides of the axle 1 can be steered synchronously, thereby improving the steering accuracy and stability of the mining vehicle.

[0019] The vehicle axle 1 comprises an upper bridge frame plate 11 and a lower bridge frame plate 12, which are fixedly connected together by a bridge frame vertical plate 13. The upper bridge frame plate 11 and the lower bridge frame plate 12 bear the bending stress in the vertical direction of the vehicle axle 1, and the bridge frame vertical plate 13 can resist the lateral bending of the vehicle axle 1 to form a two-way support, thereby improving the rigidity of the vehicle axle 1, stabilizing the structure of the vehicle axle 1, reducing deformation, improving the load-bearing capacity, and extending the service life.

[0020] There are two bridge frame uprights 13, and a supporting plate 16 is provided between the two bridge frame uprights 13. A fixed hinge ear 14 is provided on the upper surface of the supporting plate 16. The shock absorber 4 is connected to the pin shaft of the axle 1 through the fixed hinge ear 14. When the mining vehicle is bumpy, the frame moves up and down with a slight lateral offset. The rotational freedom generated by the fixed hinge ear 14 can automatically adjust the angle of the shock absorber 4 to avoid damage to the frame and the axle 1 due to torsional stress caused by the rigid connection.

[0021] The upper bridge plate 11 is connected to the upper part of the motor holding plate 2 through a steering pin 23, and the lower bridge plate 12 is connected to the lower part of the motor holding plate 2 through a steering pin 23. The connection through the steering pin 23 makes it easier to disassemble, which is convenient for replacing the wheel 22 or repairing the axle 1.

[0022] The steering pin shaft 23 is sleeved with a bearing, the inner ring of the bearing is fixedly connected to the steering pin shaft 23, and the outer ring of the bearing is fixedly connected to the motor plate 2. In this embodiment, a tapered roller bearing is used, which is suitable for heavy-loaded vehicles. The sliding friction between the steering pin shaft 23 and the motor plate 2 is converted into rolling friction, thereby reducing the steering resistance of the wheel 22.

[0023] The vehicle axle 1 is provided with a reinforcing plate 17 . Two reinforcing plates 17 are provided, close to both sides of the vehicle axle 1 , respectively. Reinforcing ribs are connected between the reinforcing plate 17 and the bridge frame upper plate 11 and the bridge frame lower plate 12 , which further strengthens the overall rigidity of the vehicle axle 1 .

[0024] The adjacent reinforced vertical plates 17 and the rear facades of the bridge frame vertical plates 13 are commonly connected with a fixed hinge ear 2 15, and the hydraulic cylinder 5 is connected to the pin shaft of the axle 1 through the fixed hinge ear 2 15. The swinging characteristics generated by the connection of the fixed hinge ear 2 15 can absorb road impact and reduce the instantaneous overload risk of the connection between the axle 1 and the hydraulic cylinder 5. The flexible design of the hinge ear connection evenly transmits the thrust of the hydraulic cylinder 5 to the motor plate 2, avoiding cracks in local areas of the motor plate 2 due to rigid impact.

[0025] The steering link 6 is located in front of the axle 1, and both ends of the steering link 6 are respectively connected to the pins of the motor plate 2 on both sides. The steering link 6 and the steering drive rod of the hydraulic cylinder 5 are respectively located in front and rear of the axle 1. The steering link 6 is connected to the front side of the motor plate 2, and the steering drive rod of the hydraulic cylinder 5 is connected to the rear side of the motor plate 2. This front-to-back connection layout forms a symmetrical torque balance, offsets the torsional stress generated by emergency steering or bumpy roads, and reduces the wheel 22 shimmy. The steering drive rod of the hydraulic cylinder 5 is located at the rear side of the motor plate 2 and is responsible for transmitting the steering input force. The steering link 6 is located at the front side of the motor plate 2 and is responsible for coordinating the synchronous steering of the left and right wheels. In this way, the separation of the action directions can avoid cross-interference of force lines and improve the steering accuracy of the wheel 22.

[0026] A limit shaft 111 is provided on the upper surface of the bridge frame upper plate 11, and the axle 1 is connected to the frame through the limit shaft 111. A limit plate 18 is fixedly connected between the supporting plate 16 and the bridge frame lower plate 12. The limit plate 18 is provided with a U-shaped hole 181, and the pin shaft in the U-shaped hole 181 is connected to the limit shaft 2 19. The limit plate 18 is connected to the frame through the limit shaft 2 19. In this embodiment, the limit shaft 111 and the limit shaft 2 19 are cylinders, and a cylindrical limit piece is provided on the top. A connecting hole adapted to the cylinder is provided on the frame. By clamping the cylindrical limit piece The connection between the axle 1 and the frame is realized in the connecting hole, and the limiting shaft 19 has a certain movable space in the U-shaped hole 181, thereby avoiding the rigid connection between the axle 1 and the frame, preventing the limiting shaft 19 and the U-shaped hole 181 from local stress concentration, and causing damage to the axle 1 during bumps. The limiting shaft 1 111 and the limiting shaft 2 19 respectively connect the axle 1 to the frame in the vertical and longitudinal directions, directly restraining the lateral displacement of the frame relative to the axle 1, preventing the frame from swinging left and right during turns or bumps, and increasing the stability between the axle 1 and the frame.

[0027] Working principle: When a vehicle is traveling in a mine tunnel and encounters a large piece of slag that needs to be crossed, the slag will exert a resistance on the wheel 22. This resistance is decomposed into lateral and vertical components. The lateral component is applied to the axle 1, which will cause the axle 1 to bend and deform. In particular, when a mining vehicle hits a stone when turning, it will change the driving direction or even skid. The vertical component is the vertical reaction force of the stone on the axle 1. If the mining vehicle is fully loaded, it will be subject to a greater vertical load, causing the axle 1 to deform. The shock absorber 4 and shear spring 3 can respectively unload the vertical and lateral components of the axle 1, thereby improving the shock absorption effect. When the mining vehicle hits the slag, the axle 1 can be protected to prevent the axle 1 from deforming, thereby providing safety protection for the use of mining vehicles.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mining vehicle axle assembly, characterized in that: The vehicle axle (1) comprises a vehicle axle (1), wherein both sides of the vehicle axle (1) are respectively connected to motor plates (2) by pins, a hydraulic motor (21) is connected inside the motor plates (2), and the hydraulic motor (21) is connected to a wheel (22); a shear spring (3) is connected to the upper part of the vehicle axle (1), the top of the shear spring (3) is connected to a vehicle frame, the vehicle axle (1) is connected to a shock absorber (4), the other end of the shock absorber (4) is tilted backwards and connected to the vehicle frame; a hydraulic cylinder (5) is connected to the rear elevation of the vehicle axle (1), the hydraulic cylinder (5) is connected to the motor plates (2) by pins, and a steering link (6) is connected to the two motor plates (2) by pins.

2. The mining vehicle axle assembly according to claim 1, characterized in that: The vehicle bridge (1) comprises an upper bridge plate (11) and a lower bridge plate (12), wherein the upper bridge plate (11) and the lower bridge plate (12) are fixedly connected together via a bridge stand plate (13).

3. The mining vehicle axle assembly according to claim 2, characterized in that: Two bridge frame uprights (13) are provided, a support plate (16) is provided between the two bridge frame uprights (13), a fixed hinge ear (14) is provided on the upper surface of the support plate (16), and the shock absorber (4) is connected to the axle pin of the axle (1) via the fixed hinge ear (14).

4. The mining vehicle axle assembly according to claim 2, characterized in that: The bridge frame upper plate (11) is connected to the upper portion of the motor holding plate (2) via a steering pin shaft (23), and the bridge frame lower plate (12) is connected to the lower portion of the motor holding plate (2) via a steering pin shaft (23).

5. The mining vehicle axle assembly according to claim 4, characterized in that: A bearing is sleeved on the steering pin shaft (23); an inner ring of the bearing is fixedly connected to the steering pin shaft (23); and an outer ring of the bearing is fixedly connected to the motor holding plate (2).

6. The mining vehicle axle assembly according to claim 1, characterized in that: The vehicle bridge (1) is provided with a reinforcing upright plate (17), wherein two reinforcing upright plates (17) are provided, respectively close to two sides of the vehicle bridge (1), and reinforcing ribs are connected between the reinforcing upright plates (17) and the bridge frame upper plate (11) and the bridge frame lower plate (12).

7. The mining vehicle axle assembly according to claim 6, characterized in that: The adjacent reinforcing upright plates (17) and the rear upright surfaces of the bridge frame upright plates (13) are commonly connected with a second fixed hinge ear (15), and the hydraulic cylinder (5) is connected to the pin shaft of the axle (1) via the second fixed hinge ear (15).

8. The mining vehicle axle assembly according to claim 7, characterized in that: The steering link (6) is located in front of the vehicle axle (1), and both ends of the steering link (6) are respectively connected to the pins of the motor holding plates (2) on both sides.

9. The mining vehicle axle assembly according to claim 1, characterized in that: A limiting shaft 1 (111) is provided on the upper surface of the bridge frame upper plate (11), and the vehicle axle (1) is connected to the vehicle frame via the limiting shaft 1 (111).

10. The mining vehicle axle assembly according to claim 1, characterized in that: A limit plate (18) is fixedly connected between the support plate (16) and the bridge frame lower plate (12), the limit plate (18) is provided with a U-shaped hole (181), a pin shaft in the U-shaped hole (181) is connected to a second limit shaft (19), and the limit plate (18) is connected to the vehicle frame via the second limit shaft (19).

Images