A crash beam strength testing apparatus

Abstract

This utility model relates to the technical field of anti-collision beam collision testing equipment, and discloses an anti-collision beam strength testing device, including a base, with fixed plates fixedly connected to both sides of the base, and a load-bearing plate fixedly connected between the two fixed plates. A limit sleeve is installed on one side of the load-bearing plate, and a groove is opened on the inner side of the limit sleeve. A punch rod is slidably connected to the inner side of the groove, and a push ball is fixedly connected to the end of the punch rod away from the limit sleeve. This utility model uses a servo motor to push a wedge-shaped push block to one side at high speed. When the wedge-shaped push block collides with the push ball, the push ball and the punch rod move rapidly to one side. The punch rod drives the punch hammer to collide with the anti-collision beam fixed on the mounting support at high speed. The rotation speed of the lead screw can be flexibly controlled by the servo motor, thereby indirectly controlling the collision speed of the punch hammer, which is convenient for simulating various collision speeds during the collision test.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-collision beam testing equipment, and in particular to an anti-collision beam strength testing equipment. Background Technology

[0002] Automotive crash beams are mainly installed at the front of the vehicle, usually inside the front bumper, and connected to the vehicle's longitudinal beams to form a robust frame. By enhancing the overall structural strength of the front of the vehicle, they play a vital role in protecting passengers and internal components, thus contributing significantly to overall vehicle safety. To study the actual performance of crash beams in different collision scenarios, extensive crash tests are required using crash beam strength testing equipment. However, existing crash beam strength testing equipment suffers from inflexible control when simulating collision speeds in real-world environments during crash tests.

[0003] For example, Chinese utility model patent CN218382025U discloses a bracket and impact testing device for anti-collision beam testing. The anti-collision beam testing bracket includes two symmetrically arranged bracket bodies. Although this solution solves the problem of low utilization rate caused by deformation or damage of the support components after the test when conducting dynamic drop hammer impact tests on anti-collision beams, the collision speed at the moment of impact depends on the height of the drop hammer when the buckle is released. That is, after the drop hammer falls, the hammer head undergoes free fall motion, accelerates after falling a certain distance, and then collides with the anti-collision beam. The speed of free fall motion at this time is the simulated collision speed. Therefore, when it is necessary to simulate a higher speed collision test, this solution must suspend the drop hammer at a higher height, which may lead to the problem of the test equipment occupying a large space. Obviously, this collision speed design method has inherent defects and is difficult to control flexibly. Based on this, an anti-collision beam strength testing device is proposed. Utility Model Content

[0004] To address the technical problem of collision speed control in anti-collision beam strength testing equipment, this utility model provides an anti-collision beam strength testing equipment.

[0005] This utility model is achieved using the following technical solution: a collision beam strength testing device, comprising a base, fixed plates fixedly connected to both sides of the base, a load-bearing plate fixedly connected between the two fixed plates, a limiting sleeve installed on one side of the load-bearing plate, a groove opened on the inner side of the limiting sleeve, a punch rod slidably connected to the inner side of the groove, a push ball fixedly connected to the end of the punch rod away from the limiting sleeve, multiple sliding rods fixedly connected between the two fixed plates, a moving platform slidably connected to the multiple sliding rods, a wedge-shaped push block fixedly connected to the side of the moving platform near the push ball, the wedge-shaped push block cooperating with the push ball, a punch rod limiting mechanism provided on the outer side of the punch rod, a moving platform driving mechanism provided on one side of the fixed plate, an elastic reset mechanism provided on one side of the push ball, a hammer connecting mechanism provided at the end of the punch rod away from the fixed plate, a punch hammer fixedly connected to one side of the hammer connecting mechanism, a collision beam mounting mechanism provided on the upper side of the base, and an industrial control module installed on the outer side of one of the fixed plates.

[0006] As a further improvement to the above solution, the punch limiting mechanism includes a limiting groove opened on the inner side of the culvert, and a locking block is slidably connected to the inner side of the limiting groove, and the locking block is fixedly connected to the outer side of the punch.

[0007] As a further improvement to the above solution, the moving stage drive mechanism includes a servo motor fixedly connected to the outside of one of the fixed plates, a lead screw rotatably connected between the two fixed plates, the lead screw being threadedly connected to the moving stage, and the output end of the servo motor passing through the fixed plate and fixedly connected to one end of the lead screw.

[0008] As a further improvement to the above solution, the elastic reset mechanism includes a reset spring sleeved on the outside of the punch rod, one end of the reset spring being fixedly connected to the push ball, and the other end of the reset spring being fixedly connected to the fixed plate.

[0009] As a further improvement to the above solution, the hammer body connecting mechanism includes a groove opened at the end of the punch rod away from the push ball, a rib inserted into the inner side of the groove, the rib fixedly connected to one side of the punch hammer, and a positioning bolt threaded onto the outer side of the punch rod, one end of the positioning bolt abutting against the outer side of the rib.

[0010] As a further improvement to the above solution, the anti-collision beam mounting mechanism includes multiple mounting supports fixedly connected to the upper side of the base, and each mounting support is provided with multiple bolts for connecting to the anti-collision beam.

[0011] As a further improvement to the above solution, a speed measuring instrument is installed on the outer side of the limiting sleeve, and the speed measuring instrument is electrically connected to the industrial control module.

[0012] As a further improvement to the above solution, a pressure sensor is installed on the inner side of the punch, and the pressure sensor is electrically connected to the industrial control module.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a servo motor to drive a wedge-shaped push block to move at high speed to one side. When the wedge-shaped push block collides with the push ball, the push ball and the punch rod move rapidly to one side. The punch rod drives the punch hammer to collide at high speed with the anti-collision beam fixed on the mounting bracket. The rotation speed of the lead screw can be flexibly controlled by the servo motor, thereby indirectly controlling the collision speed of the punch hammer, which is convenient for simulating various collision speeds during the collision test.

[0015] 2. This utility model, through the cooperation of the rib, the groove and the positioning bolt, can easily load different hammers onto the punch to simulate different collision tests, and has high practicality. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a crash beam strength testing device provided by this utility model;

[0017] Figure 2 for Figure 1 Side view;

[0018] Figure 3 for Figure 1 The front view;

[0019] Figure 4 for Figure 2 A schematic diagram of the exploded structure;

[0020] Figure 5 This is a schematic diagram of the hammer body connecting mechanism in an embodiment of the present utility model.

[0021] Explanation of key symbols:

[0022] 1. Base; 2. Mounting support; 3. Fixing plate; 4. Industrial control module; 5. Slide rod; 6. Lead screw; 7. Push ball; 8. Limit sleeve; 9. Punch hammer; 10. Moving table; 11. Wedge-shaped push block; 12. Servo motor; 13. Positioning bolt; 14. Punch rod; 15. Limit slide groove; 16. Return spring; 17. Speed ​​measuring instrument; 18. Pressure sensor; 19. Clamping block; 20. Rack rod; 21. Rack groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example:

[0025] Please combine Figure 1 - Figure 5 This embodiment of a crash beam strength testing device includes a base 1, with fixed plates 3 fixedly connected to both sides of the base 1, and a load-bearing plate fixedly connected between the two fixed plates 3. A limit sleeve 8 is installed on one side of the load-bearing plate, and a groove is formed on the inner side of the limit sleeve 8. A punch 14 is slidably connected to the inner side of the groove, and a push ball 7 is fixedly connected to the end of the punch 14 away from the limit sleeve 8. In this embodiment, four sliding rods 5 are fixedly connected between the two fixed plates 3, and a moving platform 10 is slidably connected to the four sliding rods 5. A wedge-shaped push block 11 is fixedly connected to the side of the moving platform 10 near the push ball 7. The wedge-shaped push block 11 is configured to cooperate with the push ball 7. A push bar limiting mechanism is provided on the outer side of the punch bar 14. A moving platform driving mechanism is provided on one side of the fixed plate 3. An elastic reset mechanism is provided on one side of the push ball 7. A hammer body connecting mechanism is provided at the end of the punch bar 14 away from the fixed plate 3. A punch hammer 9 is fixedly connected to one side of the hammer body connecting mechanism. An anti-collision beam mounting mechanism is provided on the upper side of the base 1. An industrial control module 4 is installed on the outer side of one of the fixed plates 3.

[0026] Through the above technical solution, the wedge-shaped pusher 11, which moves at high speed to one side, collides with the pusher ball 7, giving the pusher ball 7 momentum.

[0027] Please combine Figure 4 As shown, the punch limit mechanism includes a limit slide groove 15 opened on the inner side of the culvert, and a locking block 19 is slidably connected to the inner side of the limit slide groove 15. The locking block 19 is fixedly connected to the outer side of the punch 14.

[0028] The locking block 19 limits the movement of the punch rod 14 within the limiting groove 15, preventing it from rotating when it moves to one side.

[0029] Please combine Figure 2 As shown, the moving stage drive mechanism includes a servo motor 12 fixedly connected to the outside of one of the fixed plates 3, a lead screw 6 rotatably connected between the two fixed plates 3, the lead screw 6 being threadedly connected to the moving stage 10, and the output end of the servo motor 12 passing through the fixed plate 3 and fixedly connected to one end of the lead screw 6.

[0030] With the above technical solution, when the lead screw 6 rotates forward, the moving platform 10 moves to one side at high speed under the limit of the slide bar 5. Conversely, when the lead screw 6 rotates in reverse, the moving platform 10 moves in the opposite direction along the slide bar 5. In this way, multiple collisions can be achieved continuously and without interruption according to different collision requirements.

[0031] Please combine Figure 2As shown, the elastic reset mechanism includes a reset spring 16 sleeved on the outside of the punch 14. One end of the reset spring 16 is fixedly connected to the push ball 7, and the other end of the reset spring 16 is fixedly connected to the fixing plate 3.

[0032] With the above technical solution, when the punch rod 14 is pushed to one side, that is, when a collision occurs, the return spring 16 is deformed and compressed. After the collision ends, the punch rod 14 moves in the opposite direction under the rebound action of the return spring 16, thus achieving reset.

[0033] Please combine Figure 4 As shown, the hammer body connecting mechanism includes a groove 21 opened at the end of the punch rod 14 away from the push ball 7. A rib 20 is inserted into the inner side of the groove 21. By setting the groove 21, the rib 20 can be quickly inserted and removed to replace different types of punch hammers 9, which is convenient for experimental personnel to replace. The rib 20 is fixedly connected to one side of the punch hammer 9. A positioning bolt 13 is threaded on the outer side of the punch rod 14. One end of the positioning bolt 13 abuts against the outer side of the rib 20.

[0034] Please combine Figure 1 As shown, the anti-collision beam mounting mechanism includes two mounting supports 2 fixedly connected to the upper side of the base 1. Each mounting support 2 is provided with multiple bolts for connecting to the anti-collision beam.

[0035] Multiple mounting brackets 2 work together to facilitate quick assembly with the anti-collision beam.

[0036] Please combine Figure 3 As shown, a speed measuring instrument 17 is installed on the outside of the limiting sleeve 8. The speed measuring instrument 17 is electrically connected to the industrial control module 4. The speed measuring instrument 17 can record the speed of the impact hammer 9 when it collides.

[0037] Please combine Figure 4 As shown, a pressure sensor 18 is installed on the inner side of the punch 9. The pressure sensor 18 is electrically connected to the industrial control module 4. The impact force generated when the punch 9 collides can be recorded through the pressure sensor 18, which is convenient for statistical analysis in the background.

[0038] The implementation principle of the anti-collision beam strength testing device in this application embodiment is as follows: the anti-collision beam to be tested is fixed on the mounting supports 2 on both sides by bolts, and then the servo motor 12 is started, and the lead screw 6 rotates at high speed, pushing the moving table 10 to one side. At this time, the wedge-shaped push block 11 moving together collides at high speed with the push ball 7, squeezing and pushing the push ball 7 to one side at high speed. Under the limiting action of the limiting sleeve 8, the punch 14 drives the punch hammer 9 to collide with the anti-collision beam to one side, thus realizing the collision simulation experiment.

[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A test device for the strength of a crash beam, comprising a base (1), characterized in that, Fixed plates (3) are fixedly connected to both sides of the base (1). A load-bearing plate is fixedly connected between the two fixed plates (3). A limiting sleeve (8) is installed on one side of the load-bearing plate. A groove is opened on the inner side of the limiting sleeve (8). A punch (14) is slidably connected to the inner side of the groove. A push ball (7) is fixedly connected to the end of the punch (14) away from the limiting sleeve (8). Multiple sliding rods (5) are fixedly connected between the two fixed plates (3). A moving platform (10) is slidably connected to the multiple sliding rods (5). The moving platform (10) is close to the push ball (7). A wedge-shaped push block (11) is fixedly connected to one side of the base (1), and the wedge-shaped push block (11) is configured to cooperate with the push ball (7). A push rod limiting mechanism is provided on the outer side of the push rod (14). A moving table driving mechanism is provided on one side of the fixed plate (3). An elastic reset mechanism is provided on one side of the push ball (7). A hammer connecting mechanism is provided at the end of the push rod (14) away from the fixed plate (3). A hammer (9) is fixedly connected to one side of the hammer connecting mechanism. An anti-collision beam mounting mechanism is provided on the upper side of the base (1). An industrial control module (4) is installed on the outer side of one of the fixed plates (3).

2. The anti-collision beam strength testing equipment as described in claim 1, characterized in that, The punch limiting mechanism includes a limiting groove (15) opened on the inner side of the culvert, and a locking block (19) is slidably connected to the inner side of the limiting groove (15), and the locking block (19) is fixedly connected to the outer side of the punch (14).

3. The anti-collision beam strength testing equipment as described in claim 1, characterized in that, The moving stage drive mechanism includes a servo motor (12) fixedly connected to the outside of one of the fixed plates (3), and a lead screw (6) rotatably connected between the two fixed plates (3). The lead screw (6) is threadedly connected to the moving stage (10), and the output end of the servo motor (12) passes through the fixed plate (3) and is fixedly connected to one end of the lead screw (6).

4. The anti-collision beam strength testing equipment as described in claim 1, characterized in that, The elastic reset mechanism includes a reset spring (16) sleeved on the outside of the punch (14). One end of the reset spring (16) is fixedly connected to the push ball (7), and the other end of the reset spring (16) is fixedly connected to the fixing plate (3).

5. The anti-collision beam strength testing equipment as described in claim 1, characterized in that, The hammer body connecting mechanism includes a groove (21) opened at the end of the punch rod (14) away from the push ball (7), a rib (20) is inserted into the inner side of the groove (21), the rib (20) is fixedly connected to one side of the punch hammer (9), and a positioning bolt (13) is threaded on the outer side of the punch rod (14), one end of the positioning bolt (13) abuts against the outer side of the rib (20).

6. The anti-collision beam strength testing equipment as described in claim 1, characterized in that, The anti-collision beam installation mechanism includes multiple mounting supports (2) fixedly connected to the upper side of the base (1), and each mounting support (2) is provided with multiple bolts for connecting with the anti-collision beam.

7. The anti-collision beam strength testing equipment as described in claim 1, characterized in that, A speed measuring instrument (17) is installed on the outside of the limiting sleeve (8), and the speed measuring instrument (17) is electrically connected to the industrial control module (4).

8. The anti-collision beam strength testing equipment as described in claim 1, characterized in that, A pressure sensor (18) is installed on the inner side of the punch (9), and the pressure sensor (18) is electrically connected to the industrial control module (4).

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