Wheel positioning device for ramp acceleration system

Abstract

A wheel positioning device for a ramp acceleration system comprises a wheel positioning device, a ramp, a guide vehicle, an unhooking device, an acceleration vehicle and a winch, the wheel positioning device comprises idler wheels, a bearing, a frame, a bearing platform and a limiting device, the bearing is connected to the frame in a bolted mode, the multiple idler wheels are connected to the bearing in a sleeved mode, the bearing platform is fixed to the upper portion of the frame, and the bearing platform is flush with the road surface; the wheel positioning device is in rolling contact with the ramp through a roller, the ramp is provided with a through long guide steel pipe, the limiting device is in rolling contact with the guide steel pipe, rear wheels of the acceleration vehicle are placed on the bearing platform for limiting, and a front axle of the acceleration vehicle limits the direction through the guide vehicle. One end of the unhooking device is connected with the tail of the acceleration vehicle through a rope. The other end of the unhooking device is connected with the winch through a rope. The beneficial effects are that a ramp potential energy acceleration mode is combined with a wheel positioning device, stability is good, and operation is convenient; acceleration mechanization of a test vehicle is promoted and vehicle positioning precision is increased; the ramp potential energy acceleration mode is economical in cost and high in test efficiency.

Description

Technical Field

[0001] The utility model belongs to a vehicle acceleration system component, in particular to a wheel positioning device for a ramp acceleration system. Background Art

[0002] Highway guardrails play a vital role as the last line of defense for traffic safety. The industry standard "Highway Guardrail Safety Performance Evaluation Standard" requires that highway guardrails can only be used on the road after undergoing a full-scale collision test with a real vehicle. The full-scale collision test with a real vehicle has the advantages of being real, objective and reliable.

[0003] The core technology in the full-scale collision test of a real vehicle is the acceleration system of the test vehicle. The most commonly used test vehicle acceleration method in China is the ramp potential energy acceleration method. The ramp acceleration method uses the natural terrain to convert the gravitational potential energy into the kinetic energy of the accelerated vehicle, which has the natural advantages of convenient operation and economical cost.

[0004] However, it has high requirements for terrain, height and slope, and the accuracy is difficult to control. At the same time, when the accelerating vehicle drives up the slope into the test position, it is easy to have front and rear eccentricity, and the accelerating vehicle is not facing the runway, which can easily cause the accelerating vehicle to derail during the test, resulting in extremely serious consequences.

[0005] In summary, for the ramp potential energy acceleration method, it is necessary to develop a component that is suitable for comprehensive vehicle model testing, convenient for on-site operation, high in precision, and easy to correct the position of the accelerating vehicle. Based on this, a wheel positioning device for a ramp acceleration system is proposed. Combined with ramp potential energy acceleration, precise and fast operation can be achieved throughout the process to ensure the reliability of the test. Utility Model Content

[0006] The purpose of the utility model is to provide a wheel positioning device for a ramp acceleration system to overcome the above-mentioned shortcomings of the current prior art.

[0007] The utility model will be realized through the following technical solutions:

[0008] A wheel alignment device for a ramp acceleration system comprises a wheel alignment device, a ramp, a guide vehicle, a decoupling device, an acceleration vehicle, and a winch. The wheel alignment device comprises a roller, a bearing, a frame, a cap, and a limiting device. The bearing is bolted to the frame, a plurality of rollers are sleeved on the bearing, the cap is fixed above the frame, and the cap is flush with the road surface. The wheel alignment device is in rolling contact with the ramp through the rollers, the ramp is provided with a full-length guide steel pipe, the limiting device is in rolling contact with the guide steel pipe, the rear wheel of the acceleration vehicle is placed on the cap for upper limit, the direction of the front axle of the acceleration vehicle is limited by the guide vehicle, one end of the decoupling device is connected to the tail of the acceleration vehicle through a rope, and the other end of the decoupling device is connected to the winch through a rope.

[0009] Furthermore, the limiting device includes a limiting block, a pulley, and a height adjustment rod. The limiting block is sleeved on the outside of the guide steel pipe, the pulley is fixed to the inside of the limiting block through a fixing plate and is in sliding contact with the guide steel pipe, the height adjustment rod is sleeved in the frame, and the height adjustment rod is welded to the top of the limiting block.

[0010] Furthermore, the height adjustment rod is provided with a plurality of height adjustment holes in the vertical height direction, and a limiting hole is provided on the frame. When the limiting block adjusts the vertical height position, the height adjustment rod is bolted and fixed to the corresponding hole of the frame.

[0011] Furthermore, the unhooking device includes a connecting hook, a rotating shaft, an electrically-controlled hydraulic device, and a mobile frame. The connecting hook is a long strip with a bent hook at one end and a lifting hole at the other end. The bent hook is arranged at the front end, and a rope is sleeved on one end of the connecting hook. The electrically-controlled hydraulic device is vertically arranged at the other end of the connecting hook. A rotating hole is arranged in the middle of the connecting hook, and the rotating shaft is inserted into the rotating hole to fix the connecting hook. The rotating shaft is fixed on the mobile frame, and wheels are arranged at the bottom of the mobile frame to contact the ramp. A fixing part is arranged on the back of the mobile frame, and they are connected as a whole through the rope on the winch.

[0012] Furthermore, the electronically controlled hydraulic device includes a wireless switch remote control, a hydraulic rod, and a hydraulic oil pump. The telescopic end of the hydraulic rod is vertically upward, a socket is arranged on the hydraulic rod, and the lifting hole is bolted to the socket. When the wireless switch remote control is turned on, the hydraulic rod is vertically extended, and the hydraulic rod rotates upward around the rotating axis against the connecting hook, and the rope is out of the range of the connecting hook, so that the accelerated vehicle is disengaged from the unhooking device and can travel freely downward along the ramp. When the wireless switch remote control is turned off, the hydraulic rod is vertically retracted, and the hydraulic rod pulls the connecting hook to rotate around the rotating axis to a horizontal state.

[0013] Furthermore, the winch is arranged at the top of the ramp, and the winch pulls the unhooking device, and the unhooking device then pulls the acceleration vehicle to make it move upward along the ramp. When the specified height is reached, the winch stops, and the acceleration vehicle is disengaged from the unhooking device through the control of a wireless switch remote control. The front axle of the acceleration vehicle moves downward along the ramp after being controlled by the guide vehicle. At the bottom of the ramp, the acceleration vehicle is separated from the guide vehicle, the guide vehicle stops, and the acceleration vehicle continues to move forward freely.

[0014] Furthermore, ribs are arranged inside the wheel positioning device, the guide vehicle and the unhooking device.

[0015] Furthermore, folded edges are provided on both sides of the cross section of the guide vehicle.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects:

[0017] The ramp potential energy acceleration method combined with the wheel positioning device has good stability and easy operation;

[0018] Promote the accelerated mechanization of test vehicles and increase vehicle positioning accuracy;

[0019] The ramp potential energy acceleration method is economical and has high test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the utility model patent, the following is a brief introduction to the drawings required for use in the embodiments:

[0021] Figure 1 It is a schematic diagram of the overall longitudinal section layout of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall plan layout of the utility model;

[0023] Figure 3 It is a schematic diagram of the wheel alignment device of the utility model;

[0024] Figure 4 This is a schematic diagram of the relationship between the wheel alignment device of the utility model and the accelerating vehicle;

[0025] Figure 5 It is a schematic diagram of the decoupling device of the utility model;

[0026] Figure 6 This is a schematic diagram of the opening of the electric-controlled hydraulic device of the utility model;

[0027] Figure 7 This is a schematic diagram of the connection between the guide vehicle and the acceleration vehicle of the utility model;

[0028] Figure 8 It is a schematic diagram of the acceleration method flow of the utility model.

[0029] The following are marked in the figure:

[0030] 1. Wheel alignment device; 2. Ramp; 3. Guide vehicle; 4. Unhooking device; 5. Accelerating vehicle; 6. Winch; 7. Roller; 8. Bearing; 9. Frame; 10. Cap; 11. Limiting device; 12. Road surface; 13. Guide steel pipe; 14. Rope; 15. Limiting block; 16. Pulley; 17. Height adjustment rod; 18. Fixed plate; 19. Height adjustment hole; 20. Limiting hole; 21. Connecting hook; 22. Rotating shaft; 23. Electric control hydraulic device; 24. Mobile frame; 25. Rotating hole; 26. Wheel; 27. Wireless switch remote control; 28. Hydraulic rod; 29. ​​Hydraulic oil pump; 30. Fixing piece; 31. Lifting hole; 32. Socket; 33. Rib plate; DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the embodiments and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0032] like Figure 1 , 2 The figure shows an embodiment of a wheel alignment device for a ramp acceleration system of the utility model, which includes a wheel alignment device 1, a ramp 2, a guide vehicle 3, a decoupling device 4, an acceleration vehicle 5, and a winch 6. Figure 3 The figure shows a schematic diagram of a wheel alignment device, wherein the wheel alignment device 1 comprises a roller 7, a bearing 8, a frame 9, a cap 10, and a stopper 11. The bearing 8 is bolted to the frame 9, a plurality of rollers 7 are sleeved on the bearing 8, the cap 10 is fixed above the frame 9, and the cap 10 is flush with the road surface 12. The wheel alignment device 1 is in rolling contact with the ramp 2 through the roller 7. The ramp 2 is provided with a through-length guide steel pipe 13. The stopper 11 is in rolling contact with the guide steel pipe 13. Figure 4 The figure shows the relationship between the wheel alignment device and the accelerating vehicle. The rear wheel of the accelerating vehicle 5 is placed on the upper limit position of the support platform 10. Figure 7 The figure shows a schematic diagram of the connection between the guide vehicle and the acceleration vehicle, wherein the front axle of the acceleration vehicle 5 is restricted in direction by the guide vehicle 3, one end of the unhooking device 4 is connected to the rear of the acceleration vehicle 5 by a rope 14, and the other end of the unhooking device 4 is connected to the winch 6 by a rope 14.

[0033] The limiting device 11 includes a limiting block 15, a pulley 16, and a height adjustment rod 17. The limiting block 15 is sleeved on the outside of the guide steel pipe 13. The pulley 16 is fixed to the inside of the limiting block 15 through a fixing plate 18 and is in sliding contact with the guide steel pipe 13. The height adjustment rod 17 is sleeved in the frame 9 and welded to the top of the limiting block 15. The height adjustment rod 17 is provided with a plurality of height adjustment holes 19 in the vertical height direction, and a limiting hole 20 is provided on the frame 9. When the limiting block 15 is adjusted to the vertical height position, the height adjustment rod 17 is bolted and fixed to the corresponding hole of the frame 9.

[0034] like Figure 5The figure shows a schematic diagram of the unhooking device, wherein the unhooking device 4 comprises a connecting hook 21, a rotating shaft 22, an electrically controlled hydraulic device 23, and a mobile frame 24. The connecting hook 21 is an elongated strip having a curved hook at one end and a lifting hole 31 at the other end. The curved hook is arranged at the front end, and a rope 14 is sleeved on one end of the connecting hook 21. The electrically controlled hydraulic device 23 is vertically arranged at the other end of the connecting hook 21. A rotating hole 25 is arranged in the middle of the connecting hook 21. The rotating shaft 22 is inserted into the rotating hole 25 to fix the connecting hook 21. The rotating shaft 22 is fixed on the mobile frame 24. A wheel 26 is arranged at the bottom of the mobile frame 24 to contact the ramp 2. A fixing part 30 is arranged on the back of the mobile frame 24, and the mobile frame 24 is connected as a whole through the rope 14 on the winch 6.

[0035] like Figure 6 The figure shows a schematic diagram of opening the electric-controlled hydraulic device, wherein the electric-controlled hydraulic device 23 comprises a wireless switch remote controller 27, a hydraulic rod 28, and a hydraulic oil pump 29. The telescopic end of the hydraulic rod 28 is vertically upward, and a socket 32 ​​is arranged on the hydraulic rod 28. The lifting hole 31 is bolted to the socket 32. When the wireless switch remote controller 27 is turned on, the hydraulic rod 28 is vertically extended, and the hydraulic rod 28 rotates upward around the rotation axis 22 against the connecting hook 21, and the rope 14 escapes from the range of the connecting hook 21, so that the accelerating vehicle 5 is disconnected from the unhooking device 4 and freely travels downward along the ramp 2. When the wireless switch remote controller 27 is turned off, the hydraulic rod 28 is vertically retracted, and the hydraulic rod 28 pulls the connecting hook 21 to rotate around the rotation axis 22 to a horizontal state.

[0036] The winch 6 is arranged at the top of the ramp 2. The winch 6 pulls the unhooking device 4, and the unhooking device 4 then pulls the accelerating vehicle 5 to make it move upward along the ramp 2. When the winch reaches the specified height, the accelerating vehicle 5 is stopped, and the unhooking device 4 is controlled by the wireless switch remote control 27 to achieve the disengagement of the accelerating vehicle 5 from the unhooking device 4. The front axle of the accelerating vehicle 5 is controlled by the guide vehicle 3 and moves downward along the ramp 2. At the bottom of the ramp 2, the accelerating vehicle 5 is separated from the guide vehicle 3, the guide vehicle 3 stops, and the accelerating vehicle 5 continues to move forward freely.

[0037] Ribs 33 are arranged inside the wheel alignment device 1 , the guide vehicle 3 and the unhooking device 4 .

[0038] Folding edges are arranged on both sides of the cross section of the guide vehicle 3 .

[0039] like Figure 8The figure shows a schematic diagram of the acceleration mode process. The acceleration mode process of the utility model is as follows: ① Pull the acceleration vehicle 5 to the specified position of the ramp 2: At the bottom of the slope, first place the rear wheel of the acceleration vehicle 5 on the bearing platform 10 of the wheel positioning device 1, and clamp the front axle guide block of the acceleration vehicle 5 in the top groove of the guide vehicle 3. The unhooking device 4 is set on the back of the acceleration vehicle 5. One end of the unhooking device 4 is connected to the tail of the acceleration vehicle 5 through a rope 14, and the other end is connected to the winch 6 through the rope 14. The winch 6 is turned on, and the acceleration vehicle 5 is pulled up along the ramp 2 to the slope by the rope 14 through the winch 6 at the top of the slope. ② The accelerating vehicle 5 accelerates along the ramp 2 and hits the bottom guardrail: the electronically controlled hydraulic device 23 is turned on, the hydraulic rod 28 extends vertically, and the hydraulic rod 28 rotates upward around the rotating shaft 22 against the connecting hook 21 on the unhooking device 4. The rope 14 escapes from the range of the connecting hook 21, and the accelerating vehicle 5 is disengaged from the unhooking device 4. The front axle of the accelerating vehicle 5 is controlled by the guide vehicle 3 and moves downward along the ramp 2. At the bottom of the ramp 2, the accelerating vehicle 5 is separated from the guide vehicle 3, and the guide vehicle 3 stops. The accelerating vehicle 5 continues to move forward freely until it hits the guardrail.

Claims

1. A wheel alignment device for a ramp acceleration system, characterized in that: The invention comprises a wheel positioning device (1), a ramp (2), a guide vehicle (3), a decoupling device (4), an accelerating vehicle (5), and a winch (6). The wheel positioning device (1) comprises a roller (7), a bearing (8), a frame (9), a support platform (10), and a limiting device (11). The bearing (8) is bolted to the frame (9), a plurality of rollers (7) are sleeved on the bearing (8), the support platform (10) is fixed above the frame (9), and the support platform (10) is flush with the road surface (12). The wheel positioning device (1) ) is in rolling contact with the ramp (2) through a roller (7), the ramp (2) is provided with a full-length guide steel pipe (13), the limit device (11) is in rolling contact with the guide steel pipe (13), the rear wheel of the acceleration vehicle (5) is placed on the upper limit position of the support platform (10), the front axle of the acceleration vehicle (5) is limited in direction by the guide vehicle (3), one end of the unhooking device (4) is connected to the tail of the acceleration vehicle (5) through a rope (14), and the other end of the unhooking device (4) is connected to the winch (6) through the rope (14).

2. The wheel alignment device for a ramp acceleration system according to claim 1, characterized in that: The limiting device (11) comprises a limiting block (15), a pulley (16), and a height adjustment rod (17); the limiting block (15) is sleeved on the outside of the guide steel pipe (13); the pulley (16) is fixed to the inside of the limiting block (15) through a fixing plate (18) and is in sliding contact with the guide steel pipe (13); the height adjustment rod (17) is sleeved in the frame (9), and the height adjustment rod (17) is welded to the top of the limiting block (15).

3. The wheel alignment device for a ramp acceleration system according to claim 2, characterized in that: The height adjustment rod (17) is provided with a plurality of height adjustment holes (19) in the vertical height direction, and a limit hole (20) is provided on the frame (9). When the limit block (15) adjusts the vertical height position, the height adjustment rod (17) is bolted and fixed to the corresponding hole of the frame (9).

4. The wheel alignment device for a ramp acceleration system according to claim 1, characterized in that: The unhooking device (4) comprises a connecting hook (21), a rotating shaft (22), an electric-controlled hydraulic device (23), and a mobile frame (24). The connecting hook (21) is in the shape of a long strip having a curved hook at one end and a lifting hole (31) at the other end. The curved hook is arranged at the front end. The rope (14) is sleeved on one end of the connecting hook (21). The electric-controlled hydraulic device (23) is vertically arranged at the other end of the connecting hook (21). A rotating hole (25) is arranged in the middle of the connecting hook (21). The rotating shaft (22) penetrates into the rotating hole (25) to fix the connecting hook (21). The rotating shaft (22) is fixed to the mobile frame (24). A wheel (26) is arranged at the bottom of the mobile frame (24) to contact the ramp (2). A fixing member (30) is arranged at the back of the mobile frame (24). The mobile frame (24) is connected as a whole through a rope (14) on a winch (6).

5. The wheel alignment device for a ramp acceleration system according to claim 4, characterized in that: The electronically controlled hydraulic device (23) comprises a wireless switch remote controller (27), a hydraulic rod (28), and a hydraulic oil pump (29). The telescopic end of the hydraulic rod (28) is vertically upward, a socket (32) is arranged on the hydraulic rod (28), and a lifting hole (31) is bolted to the socket (32). When the wireless switch remote controller (27) is turned on, the hydraulic rod (28) is vertically extended, the hydraulic rod (28) pushes against the connecting hook (21) and rotates upward around the rotation axis (22), and the rope (14) escapes from the range of the connecting hook (21), so that the accelerating vehicle (5) is disconnected from the unhooking device (4) and freely travels downward along the ramp (2). When the wireless switch remote controller (27) is turned off, the hydraulic rod (28) is vertically retracted, and the hydraulic rod (28) pulls the connecting hook (21) and rotates around the rotation axis (22) to a horizontal state.

6. The wheel alignment device for a ramp acceleration system according to claim 1, characterized in that: The hoist (6) is arranged at the top of the ramp (2). The hoist (6) pulls the unhooking device (4), and the unhooking device (4) then pulls the acceleration vehicle (5) to move upward along the ramp (2). When the designated height is reached, the hoist stops. The acceleration vehicle (5) is disconnected from the unhooking device (4) by the control of the wireless switch remote controller (27). The front axle of the acceleration vehicle (5) is controlled by the guide vehicle (3) and moves downward along the ramp (2). At the bottom of the ramp (2), the acceleration vehicle (5) is separated from the guide vehicle (3), the guide vehicle (3) stops, and the acceleration vehicle (5) continues to move forward freely.

7. The wheel alignment device for a ramp acceleration system according to claim 1, characterized in that: Ribs (33) are provided inside the wheel positioning device (1), the guide vehicle (3) and the unhooking device (4).

8. The wheel alignment device for a ramp acceleration system according to claim 1, characterized in that: Folding edges are arranged on both sides of the cross section of the guide vehicle (3).

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