Automobile bumper anti-collision test device

Abstract

The utility model discloses an anti-collision testing device for an automobile bumper, and belongs to the field of automobile bumper testing. The anti-collision testing device for the automobile bumper comprises a base, an impact block is arranged in the middle of the upper end of the base, a first clamping block is arranged at one end of the impact block, and first rollers are arranged on the two sides of the impact block. According to the utility model, the problem that the impact block is easy to bend and damage due to the fact that the sliding position of the impact block and the adsorption position of the electromagnetic block deviate relatively far and the adsorption position of the electromagnetic block is also far away from the force storage spring in the test process of the existing automobile bumper impact test device is solved; the two sides of the impact block are rotated and supported in the corresponding directions through a first roller and a second roller correspondingly, so that the impact block is stable in the impact and reset process, and the impact block is evenly stressed in cooperation with adsorption in the middle of the rear end of the impact block and pushing of springs on the two sides.

Description

Technical Field

[0001] This utility model relates to the field of automobile bumper testing, specifically an automobile bumper anti-collision testing device. Background Technology

[0002] The car bumper crash test device is a device used to evaluate the performance of a vehicle bumper in a collision. By simulating real collision scenarios, the device measures the bumper's energy absorption effect, deformation degree, and ability to protect occupants. The test is usually conducted at different speeds and angles to cover a variety of accident scenarios. The data includes impact force, displacement, and structural integrity, which are used to improve design and meet safety standards.

[0003] Chinese Patent CN217111394U discloses a car bumper impact testing device, including a testing platform. One side of the testing platform has a clamping part for mounting the bumper, and the other side has a base and an impact part. A hydraulic cylinder is mounted on the base, and a piston rod is installed within the hydraulic cylinder. The bumper is fixed to the clamping part, and the impact part is fixed to the piston rod. The hydraulic cylinder drives the piston rod to extend and retract, thereby adjusting the distance between the impact part and the clamping part. The impact part compresses a storage spring. After the connection between the impact part and the piston rod is released, the impact part slides along a sliding rod under the action of the storage spring. An impact block on the impact part impacts the bumper, thus performing the impact testing function. After the impact, the hydraulic cylinder drives the piston rod to extend, completing the connection between the impact part and the piston rod.

[0004] During the test, the sliding position of the impact block and the adsorption position of the electromagnetic block deviate significantly from each other, and the adsorption position of the electromagnetic block is also far away from the energy storage spring, which can easily cause the impact block to bend and be damaged. Utility Model Content

[0005] The purpose of this invention is to provide a car bumper anti-collision testing device. The device supports both sides of the impact block through a guide frame, and the two sides of the impact block are rotated and supported in corresponding directions by a first roller and a second roller, respectively. This makes the impact block stable during the impact and reset process. Combined with the adsorption at the middle of the rear end of the impact block and the pushing of the springs on both sides, the impact block is subjected to uniform force, which will not cause the impact block to bend or break during use, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a car bumper anti-collision testing device, comprising a base, an impact block disposed in the middle of the upper end of the base, a first clamping block disposed at one end of the impact block, first rollers disposed on both sides of the impact block, a second roller disposed at the upper end of the first rollers, guide frames disposed laterally on both sides of the outer side of the impact block, a second threaded rod disposed on one side of each of the two first rollers, a threaded sliding block disposed on the outer side of the second threaded rod, an electromagnetic block disposed at the other end of the impact block, and springs disposed on both sides of the electromagnetic block.

[0007] Preferably, both the first roller and the second roller are located inside the guide frame.

[0008] Preferably, the second threaded rod and the sliding block are both located inside the guide frame, and the outside of the sliding block is connected to the inside sliding groove of the guide frame.

[0009] Preferably, a third roller is provided inside the sliding block on the side facing the first roller.

[0010] Preferably, both ends of the third roller are rotatably connected to the inside of the sliding block.

[0011] Preferably, a second clamping block is provided on the outer side of the first clamping block facing the impact block.

[0012] Preferably, a first threaded rod is provided through the interior of the second clamping block, and the exterior of the first threaded rod engages with the interior thread of the first clamping block.

[0013] Preferably, a piston rod is provided at one end of the electromagnetic block, and a hydraulic cylinder is provided at the other end of the electromagnetic block.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention relates to an impact block that is pushed by a spring, causing it to collide with and be tested against a car bumper suspended at the first clamping block position. The rotation of the second threaded rod then causes the sliding block to move laterally within the guide frame. Firstly, the sliding block is brought into contact with the first roller by the third roller, pushing the impact block back to its original position. This eliminates the need for a long piston rod to contact the electromagnetic block and for the electromagnetic block to attract the impact block. Secondly, during the lateral movement and resetting process, the impact block is laterally supported by the rotation of the second rollers on both sides, while it is longitudinally supported by the rotation of the first rollers on both sides. The rotation of the first and second rollers improves the stability of the impact block's movement. Furthermore, springs for rebound are provided on both sides of the rear end of the impact block. When attracting and pulling the impact block, the electromagnetic block at the middle of the rear end of the impact block attracts and pulls it. This middle-position attraction and pulling, combined with the support of the first and second rollers on both sides, improves the stability of the test. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 Enlarged view of a portion of region A in the middle;

[0018] Figure 3 This is a cross-sectional view showing the positional relationship of the sliding blocks in this utility model;

[0019] Figure 4 This is a sectional view showing the positional relationship of the first threaded rod of this utility model;

[0020] Figure 5 This is a cross-sectional view of the second threaded rod transmission structure of this utility model;

[0021] Figure 6 For the present utility model Figure 5 Enlarged view of a portion of region B in the middle.

[0022] In the diagram: 1. Impact block; 2. Electromagnetic block; 3. First clamping block; 4. First threaded rod; 5. Guide frame; 6. Spring; 7. First roller; 8. Second roller; 9. Sliding block; 10. Second threaded rod; 11. Third roller; 12. Base; 13. Second clamping block. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] like Figure 1As shown, a car bumper anti-collision testing device of this embodiment includes a base 12, an impact block 1 is provided in the middle of the upper end of the base 12, a first clamping block 3 is provided at one end of the impact block 1, and a second clamping block 13 is provided on the outer side of the first clamping block 3 facing the impact block 1. The car bumper to be tested is suspended between the second clamping block 13 and the first clamping block 3. The car bumper can be fixed by clamping the second clamping block 13 and the first clamping block 3.

[0025] Among them, such as Figure 4 As shown, a first threaded rod 4 is provided through the interior of the second clamping block 13, and the exterior of the first threaded rod 4 is rotatably connected to the interior of the second clamping block 13. The exterior of the first threaded rod 4 is threadedly engaged with the interior of the first clamping block 3. As the first threaded rod 4 rotates, it can push the second clamping block 13 laterally, so that the second clamping block 13 actively moves toward the first clamping block 3.

[0026] In addition, an electromagnetic block 2 is provided at the other end of the impact block 1, a piston rod is provided at the other end of the electromagnetic block 2, and a hydraulic cylinder is provided at the other end of the electromagnetic block 2. The extension of the hydraulic cylinder can push the piston rod, so that the piston rod pushes the electromagnetic block 2 which is energized and generates magnetic force. The electromagnetic block 2 attracts the impact block 1 and facilitates the pulling of the impact block 1.

[0027] Electromagnetic block 2 is an electromagnet; referring to Chinese Patent No. CN217111394U, a car bumper impact testing device, in that application, the electromagnet is energized and attracts the front end, which is the same as the method of attraction in this application. Moreover, the electromagnet being energized and generating attraction is a conventional technology. Therefore, this application does not elaborate on the energization of the electromagnet and the pushing of the electromagnet.

[0028] To improve the stability of the lateral movement of the impact block 1, first rollers 7 are provided on both sides of the impact block 1, and second rollers 8 are provided on the upper end of the first rollers 7. The rotation of a pair of second rollers 8 supports the lateral horizontal position of the impact block 1, and the rotation of a pair of first rollers 7 supports the vertical horizontal position of the impact block 1. The rotation of a pair of first rollers 7 and a pair of second rollers 8 can provide stability for the lateral movement of the impact block 1.

[0029] Among them, guide frames 5 are arranged laterally on both sides of the impact block 1, and the first roller 7 and the second roller 8 are located inside the guide frame 5. When the impact block 1 moves laterally, the first roller 7 and the second roller 8 will move laterally inside the guide frame 5.

[0030] To reset the impact block 1 after lateral movement, avoiding the need for energizing the electromagnetic block 2 to reset the impact block 1, and avoiding the need for a long piston rod to extend, thus avoiding a large footprint of the entire device, a second threaded rod 10 is provided on one side of each of the two first rollers 7. Figure 3 As shown, a sliding block 9 is provided on the outside of the second threaded rod 10, and the inside of the sliding block 9 is threaded with the outside of the second threaded rod 10. The rotation of the second threaded rod 10 can drive the sliding block 9 to move laterally. The movement of the sliding block 9 can contact both sides of the impact block 1. The push of the sliding block 9 can reset the impact block 1 and actively push the impact block 1 to approach the electromagnetic block 2.

[0031] The second threaded rod 10 and the sliding block 9 are both located inside the guide frame 5, and the outside of the sliding block 9 is connected to the sliding groove inside the guide frame 5. After the second threaded rod 10 rotates and is threadedly engaged with the through position of the sliding block 9, the guide frame 5 fits against the sliding block 9 and causes the sliding block 9 to change from rotational motion to lateral linear motion, so that the sliding block 9 can laterally push the impact block 1 and cause the impact block 1 to reset.

[0032] To prevent the protruding first roller 7 from affecting the contact of the sliding block 9, and to prevent the sliding block 9 from affecting the normal rotation of the first roller 7 when pushing the impact block 1, such as Figure 5 and Figure 6 As shown, a third roller 11 is provided inside the sliding block 9 on the side facing the first roller 7. When the sliding block 9 moves laterally, the sliding block 9 will contact the first roller 7 through the third roller 11. The third roller 11 rotates as the impact block 1 moves laterally. The third roller 11 will contact the rotated first roller 7 when it rotates inside the sliding block 9. Both ends of the third roller 11 are rotatably connected to the inside of the sliding block 9.

[0033] In order to make the impact block 1 actively move towards the position of the first clamping block 3 after the electromagnetic block 2 attracts and pulls the impact block 1, such as Figure 2 As shown, springs 6 are provided on both sides of the electromagnetic block 2. After the electromagnetic block 2 attracts and pulls the impact block 1, it causes the impact block 1 to contact the spring 6 and actively causes the spring 6 to contract. The elasticity of the spring 6 gives the impact block 1 the impact force on the car bumper.

[0034] Working principle: When using the device to impact and test a car bumper, the car bumper is suspended between the first clamping block 3 and the second clamping block 13. Rotating the first threaded rod 4 pushes the second clamping block 13 toward the first clamping block 3, thus clamping the car bumper. When the electromagnetic block 2 is energized, the piston rod connected to the electromagnetic block 2 mechanically extends and pushes it, causing the electromagnetic block 2 to contact and pull the impact block 1. Pulling the impact block 1 causes the spring 6 to contract and rebound. After the energization of the electromagnetic block 2 is stopped, the rebound of the spring 6 pushes the impact block 1 toward the car bumper. During this movement, the first roller 7 and the second roller 8... The guide frame 5 will rotate and support in different directions. When the impact block 1 needs to be reset after the collision, the second threaded rod 10 rotates clockwise and generates relative movement with the inside of the sliding block 9. After being restricted by the guide frame 5, the sliding block 9 changes from rotational motion to lateral linear motion. The sliding block 9 pushes and squeezes the impact block 1, causing the impact block 1 to move toward the spring 6 and complete the reset. When the sliding block 9 moves laterally, the third roller 11 will contact the first roller 7 and push the impact block 1 to move. After the impact block 1 moves laterally and resets, the second threaded rod 10 rotates counterclockwise, causing the sliding block 9 to reset and move to both sides of the first clamping block 3, waiting for the next reset.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A car bumper anti-collision testing device, comprising a base (12), wherein an impact block (1) is disposed at the middle of the upper end of the base (12), and a first clamping block (3) is disposed at one end of the impact block (1), characterized in that, The impact block (1) is provided with first rollers (7) on both sides, and a second roller (8) is provided at the upper end of the first rollers (7). Guide frames (5) are provided laterally on both sides of the impact block (1). A second threaded rod (10) is provided on one side of each of the two first rollers (7). A threaded sliding block (9) is provided on the outside of the second threaded rod (10). An electromagnetic block (2) is provided at the other end of the impact block (1). Springs (6) are provided on both sides of the electromagnetic block (2).

2. The automobile bumper anti-collision testing device according to claim 1, characterized in that, The first roller (7) and the second roller (8) are both located inside the guide frame (5).

3. The automobile bumper anti-collision testing device according to claim 1, characterized in that, The second threaded rod (10) and the sliding block (9) are both located inside the guide frame (5), and the outside of the sliding block (9) is connected to the inside sliding groove of the guide frame (5).

4. The automobile bumper anti-collision testing device according to claim 3, characterized in that, The sliding block (9) has a third roller (11) on the side facing the first roller (7).

5. The automobile bumper anti-collision testing device according to claim 4, characterized in that, Both ends of the third roller (11) are rotatably connected to the inside of the sliding block (9).

6. The automobile bumper anti-collision testing device according to claim 1, characterized in that, A second clamping block (13) is provided on the side of the first clamping block (3) facing the impact block (1).

7. The automobile bumper anti-collision testing device according to claim 6, characterized in that, The second clamping block (13) has a first threaded rod (4) that runs through its interior, and the outside of the first threaded rod (4) engages with the internal thread of the first clamping block (3).

8. The automobile bumper anti-collision testing device according to claim 1, characterized in that, A piston rod is provided at the other end of the electromagnetic block (2), and a hydraulic cylinder is provided at the other end of the electromagnetic block (2).

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