Trailer wagon stopping device for automobile crash test
By designing a modular clamping and damping buffer structure, the problem of poor buffering effect when the traction trolley stops and releases the test vehicle in the car crash test was solved, and the stable stopping of the traction trolley and the failure rate were reduced.
Patent Information
- Application Number
- CN202520585398.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-31
AI Technical Summary
In existing technologies, the traction trolley in car crash tests does not provide adequate cushioning when stopping and releasing the test vehicle, which can easily lead to an increased failure rate.
A device comprising a clamping part, a limiting part, and a damping buffer part was designed. The clamping part adopts a modular design, the limiting part achieves automatic release by extending the impact block, and the damping buffer part absorbs the impact force through a spring damper, meeting national standard requirements.
It enables the traction trolley to stop effectively and release automatically at specific positions, reducing the failure rate and providing better buffer protection.
Smart Images
Figure CN223827251U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive crash test technology, and in particular relates to a stopping device for a traction trolley used in automotive crash tests. Background Technology
[0002] With the increasing number of cars on the road and the frequent occurrence of traffic accidents, vehicle safety testing, especially passive safety testing, is of paramount importance. Vehicle crash tests are irreversible and costly. Typically, the test vehicle is towed by a trolley. A limit pin locks the test vehicle to the trolley, and a clamping mechanism on the trolley clamps the traction cable. A traction motor pulls the traction cable, causing the trolley to move the test vehicle along a specific track. Regulations require the test vehicle to be in a free-sliding state at least 10 meters before a collision. This necessitates the trolley effectively stopping at a specific location and automatically releasing the test vehicle. Furthermore, the stopping device must minimize the impact on the trolley to prevent damage from repeated collisions.
[0003] The prior art discloses a traction trolley device that can ensure the test vehicle moves forward stably and collide with other vehicles. However, it can only use honeycomb aluminum to stop the traction trolley from impact, which is not a good buffering effect and can easily lead to an increased failure rate of the traction trolley.
[0004] Therefore, it is necessary to design a traction trolley stopping device specifically for car collisions to ensure that the traction trolley can be effectively stopped at a specific position and the test vehicle can be automatically released during car collision tests. It also has a certain buffering capacity so that the energy impact received by the traction trolley can be buffered and absorbed, reducing the failure rate. Utility Model Content
[0005] This utility model is a stopping device for a traction trolley used in automobile collision testing, including a clamping part, a limiting part, and a damping buffer part. The clamping part is modular, and the limiting part allows the traction trolley to hit the limiting pin before contacting the damper, so that the traction trolley can automatically release the collision test vehicle and allow it to glide freely, thereby meeting the national standard requirements. The damping buffer part stops the trolley immediately when it is prevented from moving forward.
[0006] The technical solution of this utility model is as follows: a stopping device for a traction trolley used in a car collision test, comprising a clamping part, a limiting part, and a damping buffer part; the clamping part includes two symmetrically arranged clamping modules, which are respectively clamped on both sides of the track, and a traction rope passes between the two clamping modules, the traction rope pulling the trolley; the limiting part is an extended impact block, one end of which is installed on the top of the clamping part, and the other end extends towards the oncoming direction of the traction trolley, the length of which is longer than the clamping part and the damping buffer part, and can impact the limiting pin between the traction trolley and the test vehicle; the damping buffer part is installed in the track, with the buffer end facing the oncoming direction of the traction trolley.
[0007] Based on the above solution, further: the clamping module includes an upper panel, a lower panel, and a rope clamp standing between the upper and lower panels. The upper and lower panels are clamped on the edge of the track, and a traction rope passes between the rope clamps of the two clamping modules.
[0008] Based on the above solution, further: a connecting top plate is connected between the upper panels of the two clamping modules, and the connecting top plate covers the slot between the two rope clamps from the top.
[0009] Based on the above scheme, further: the damping buffer part includes a buffer seat and a spring damper, the buffer seat is fixed to the bottom of the clamping module, and the spring damper is installed on the buffer seat.
[0010] The advantages of this utility model are:
[0011] 1. The modular design of the clamping part ensures easy disassembly and maintains the overall strength of the device;
[0012] 2. The spring buffer damper can stop the trolley while providing better buffer protection.
[0013] 3. Extending the impact block allows the traction trolley to automatically release the collision vehicle before reaching the stopping area, meeting national standards. Attached Figure Description
[0014] Figure 1 This is a schematic diagram showing the connection between the traction trolley stopping device and the track;
[0015] Figure 2 This is a forward axonometric view of the stopping device of this traction trolley;
[0016] Figure 3 This is a reverse isometric view of the stopping device of this traction trolley. Detailed Implementation
[0017] The present technical solution will now be described in detail with reference to the accompanying drawings and embodiments. Of course, the following embodiments are not the only limitations on the present utility model's technical solution. Any equivalent changes or substitutions made without departing from the spirit and essence of the present technical solution shall be protected by the present utility model.
[0018] like Figures 1-3 As shown, a stopping device for a towing trolley used in a car crash test is provided to limit the unrestricted free movement of the towing trolley after it has detached from the test vehicle. The device includes a clamping part 1, a limiting part 2, and a damping buffer part 3.
[0019] The clamping part 1 includes two symmetrical clamping modules. Each clamping module includes an upper panel 11, a lower panel 12, and a rope clamping plate 13 located between the upper and lower panels. The rope clamping plate 13 is positioned centrally between the upper panel 11 and the lower panel 12, so that the upper panel 11, the lower panel 12, and the rope clamping plate 13 form an "I" shape, thereby forming a clamping groove on each side of the "I" shape. The clamping part also includes a connecting top plate 14 connecting the two upper panels 11, so that the two clamping modules are connected as one unit through the connecting top plate 14.
[0020] The clamping part is placed in the track of the traction trolley. Screw holes are provided on the edges of the upper panel 11 and lower panel 12, and screw holes are also provided on the edge of the traction track. The edge of the traction track is clamped in the outer clamping groove A of the "I"-shaped clamping module, so that the upper panel 11 and lower panel 12 are respectively pressed against the upper and lower surfaces of the track edge. Then, the clamping module can be fastened to the edge of the track using bolts. The inner clamping grooves B of the two "I"-shaped clamping modules face each other, and the traction rope can pass through the middle of the two grooves. The connecting top plate 14 at the top of the two clamping modules prevents the rope from jumping out, thus ensuring that the direction of the rope-pulling trolley remains unchanged.
[0021] Limiting part 2 uses an extended impact block. One end of the extended impact block is installed on the top of the clamping part, and the other end extends towards the direction of the traction trolley. The length of the extended impact block is longer than the clamping part and the damping buffer part. The extended impact block allows the traction trolley to hit the limit pin of the traction trolley through the impact block a certain distance before contacting the damper, so that the limit pin is unlocked, the traction trolley automatically releases the collision test vehicle, and the test vehicle slides freely to carry out the collision.
[0022] The damping buffer section 3 includes a buffer seat 31 and a spring damper 32. The buffer seat 31 is fixed to the bottom of the clamping module. The spring damper 32 is installed on the buffer seat. When the device is installed, the buffer seat 31 is placed in the track and the spring damper 32 faces the direction of the traction trolley. The spring damper 32 adopts an imported damping module, and its damping coefficient can be flexibly adjusted to meet various types of collision tests. It has a good buffering protection effect on the impact of the traction trolley.
[0023] The working principle of this device is as follows: the traction trolley travels within the track under the traction of the traction rope, while the collision test vehicle is pulled forward beside the traction trolley. The traction trolley and the test vehicle are locked together by a limit pin, and this device is located in front of the traction trolley. When the appropriate time is reached, the traction motor stops pulling the traction rope, and the accelerating traction trolley collides with the extended impact block of this device under the action of inertia. At this time, the limit pin pops open, and the test vehicle on the side will move forward on its own to collide with it, while the traction trolley continues to move forward under the force of inertia and collides with the spring damper of this device. The impact force is buffered, and the trolley stops as quickly as possible.
Claims
1. A stopping device for a traction trolley used in automobile crash tests, characterized in that: It includes a clamping part (1), a limiting part (2), and a damping buffer part (3); The clamping part (1) includes two clamping modules arranged symmetrically, which are respectively clamped on both sides of the track. A traction rope passes between the two clamping modules, and the traction rope pulls the trolley. The limiting part (2) is an extended impact block, one end of which is installed on the top of the clamping part (1), and the other end extends toward the direction of the traction trolley. Its length is longer than the clamping part (1) and the damping buffer part (3), and it can impact the limiting pin between the traction trolley and the test vehicle. The damping buffer section (3) is installed in the track, with the buffer end facing the direction of the traction trolley.
2. The stopping device for a traction trolley used in a car crash test according to claim 1, characterized in that: The clamping module includes an upper panel (11), a lower panel (12), and a rope clamp (13) standing between the upper and lower panels. The upper panel (11) and the lower panel (12) are clamped on the side of the track, and a traction rope passes between the rope clamps (13) of the two clamping modules.
3. The stopping device for a traction trolley used in a car crash test according to claim 2, characterized in that: A connecting top plate (14) is connected between the upper panels (11) of the two clamping modules, and the connecting top plate (14) covers the slot between the two rope clamps (13) from the top.
4. The stopping device for a traction trolley used in a car crash test according to claim 1, characterized in that: The damping buffer part (3) includes a buffer seat (31) and a spring damper (32). The buffer seat (31) is fixed to the bottom of the clamping module, and the spring damper (32) is installed on the buffer seat (31).