Anti-impact performance detection device for automobile anti-collision beam

Abstract

The invention relates to the field of automobile part performance detection, in particular to an automobile anti-collision beam shock resistance detection device which comprises a supporting frame body and the like. According to the device for detecting the impact resistance of the automobile anti-collision beam, the moving mechanism can drive the main hydraulic rod and the auxiliary hydraulic rod to push the pressurizing block to continuously impact the anti-collision beam test piece for multiple times in sequence at different angles, so that the impact resistance detection of continuous collision in a real use environment is simulated; meanwhile, under the combined control of a wedge-shaped push block, a wedge-shaped sliding block and a side supporting block, a pressurizing block can be adjusted to a corresponding angle to complete collision, and the defect that an existing automobile anti-collision beam impact resistance detection device cannot be combined with various factors occurring in the actual use environment to carry out impact resistance detection work is overcome; and the available value of the impact resistance detection result of the anti-collision beam test piece is improved.

Description

Technical Field

[0001] The present invention relates to the field of performance testing of automotive parts, and particularly to a device for testing the impact resistance of an automotive bumper beam. Background Art

[0002] The impact resistance testing of automotive bumper beams is a core link in ensuring vehicle passive safety. Its technical background involves multiple aspects such as material properties, structural design, experimental methods, and simulation verification. The bumper beam is the first line of defense during vehicle collisions. Qualified impact resistance can effectively absorb collision energy, thereby reducing the risk of occupant compartment deformation by 30% - 50%. By testing, it is ensured that the yield strength of the bumper beam meets the standard, and the deformation characteristics of the material under extreme conditions are verified to prevent dangerous situations such as brittle fracture from occurring when the automotive bumper beam collides in the actual use environment. The test data can provide a basis for the research and development of new materials, promote the balanced development of lightweight and high strength, and facilitate the continuous improvement of simulation technology. However, the existing devices for testing the impact resistance of automotive bumper beams cannot combine various factors that occur in the actual use environment, so they cannot perform various impact resistance testing operations on automotive bumper beams in a more realistic simulation scenario, resulting in a relatively low utilization value of the test results of the impact resistance of the bumper beam test pieces. Summary of the Invention

[0003] In order to overcome the defect that the existing devices for testing the impact resistance of automotive bumper beams cannot combine various factors that occur in the actual use environment to perform impact resistance testing operations, the present invention provides a device for testing the impact resistance of an automotive bumper beam.

[0004] The technical solution of the present invention is: A device for testing the impact resistance of an automotive bumper beam, comprising a support frame body, a mounting plate, a moving mechanism, a main hydraulic rod, an auxiliary hydraulic rod, a fixing block, a rotary joint, a connecting rod, a pressing block, a wedge-shaped push block, a wedge-shaped slider, and a side support block; a mounting plate for fixing the bumper beam test piece is fixedly connected to the support frame body; a moving mechanism is connected to the support frame body; a main hydraulic rod and two auxiliary hydraulic rods are sequentially connected to the moving mechanism; a fixing block is fixedly connected to the telescopic end of the main hydraulic rod; a rotary joint is rotatably connected inside the fixing block; a connecting rod is connected inside the rotary joint; a pressing block is fixedly connected to the connecting rod; two wedge-shaped push blocks that are symmetric left and right to each other are fixedly connected to the pressing block; wedge-shaped sliders corresponding to the number and positions of the wedge-shaped push blocks are slidably connected to the fixing block; the telescopic ends of the auxiliary hydraulic rods are inserted into the corresponding wedge-shaped sliders; a side support block is fixedly connected to the wedge-shaped slider; the side support block is closely attached to the pressing block.

[0005] Furthermore, the moving mechanism consists of a semi-circular track, a rotating slider, a semi-circular rack, a driving motor, and a gear; the front side of the support frame body is fixedly connected with a semi-circular track; a rotating slider is slidably connected to the semi-circular track; the main hydraulic rod and the two auxiliary hydraulic rods are jointly installed on the rotating slider; the rear end of the rotating slider is rotatably connected to the support frame body through a rotating shaft; a semi-circular rack is fixedly connected to the semi-circular track; a driving motor is installed on the rotating slider; the output shaft of the driving motor is fixedly connected with a gear; the gear meshes with the semi-circular rack.

[0006] Furthermore, the fixed block is slidably connected to the rotating slider.

[0007] Furthermore, a buffer soft pad is fixedly connected to each end of the two wedge-shaped push blocks facing the corresponding wedge-shaped sliders.

[0008] Furthermore, a compression spring is fixedly connected between each of the two wedge-shaped sliders and the fixed block.

[0009] Furthermore, the connecting rod is rotatably connected to the rotary joint; a self-locking rotary motor is installed in the rotary joint; the rotating shaft of the self-locking rotary motor is fixedly connected to the connecting rod.

[0010] Furthermore, an inner cavity structure for the heat transfer oil to flow through is formed in the pressure block; two pipe joint structures that are jointly connected to the inner cavity structure are provided on the pressure block.

[0011] Furthermore, the inner cavity structure of the pressure block is an S-shaped curve structure composed of a plurality of curved structures.

[0012] Furthermore, an electric heater for heating the anti-collision beam test piece is installed on the mounting plate.

[0013] Furthermore, a global temperature measuring instrument for globally monitoring the overall temperature and temperature change of the anti-collision beam test piece is installed on the support frame body.

[0014] Furthermore, a support sliding plate is slidably connected in the pressure block; two lead screws are rotatably connected to the pressure block; the thread structures of the two lead screws are both screwed to the support sliding plate; an adjusting nut is fixedly connected to each of the two lead screws; a plurality of friction bumps are provided on the support sliding plate.

[0015] The beneficial effects are as follows: For a device for detecting the impact resistance performance of an automobile anti-collision beam described in the present invention, the moving mechanism can drive the main hydraulic rod and the auxiliary hydraulic rod to push the pressure block to successively impact the anti-collision beam test piece at different angles for multiple times, simulating the impact resistance performance detection of continuous collisions in the actual use environment. At the same time, under the combined control of the wedge-shaped push block, the wedge-shaped slider and the side support block, the pressure block can be adjusted to the corresponding angle to complete the collision. In addition, the self-temperatures of the pressure block and the anti-collision beam test piece can be adjusted, and a global temperature measuring instrument is used to record data such as the overall temperature and temperature change of the anti-collision beam test piece, overcoming the defect that the existing device for detecting the impact resistance performance of an automobile anti-collision beam cannot carry out the impact resistance performance detection work in combination with various factors that occur in the actual use environment, and improving the available value of the detection result of the impact resistance performance of the anti-collision beam test piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional view of the present invention described according to an embodiment;

[0017] Figure 2 It is a three-dimensional view of the rotating slider of the present invention described according to an embodiment;

[0018] Figure 3 It is a three-dimensional view of the fixed block of the present invention described according to an embodiment;

[0019] Figure 4 It is a three-dimensional view of the wedge-shaped slider of the present invention described according to an embodiment;

[0020] Figure 5 It is a three-dimensional sectional view of the fixed block of the present invention described according to an embodiment;

[0021] Figure 6 It is a three-dimensional sectional view of the rotary joint of the present invention described according to an embodiment;

[0022] Figure 7 It is a three-dimensional sectional view of the pressure block of the present invention described according to an embodiment;

[0023] Figure 8 It is a top view of the initial working state of the present invention described according to an embodiment;

[0024] Figure 9 It is a top view of the working state after the rotating slider rotates of the present invention described according to an embodiment;

[0025] Figure 10 It is a three-dimensional view of the working state after the pressure block rotates of the present invention described according to an embodiment;

[0026] Figure 11 It is a three-dimensional view of the friction bump of the present invention described according to an embodiment;

[0027] Figure 12Stereogram of the support skateboard according to the embodiment for describing the present invention.

[0028] Reference numerals: 1 - support frame body, 2 - mounting plate, 31 - semi - circular track, 32 - rotating slider, 33 - semi - circular rack, 34 - driving motor, 35 - gear, 41 - main hydraulic rod, 42 - auxiliary hydraulic rod, 43 - fixing block, 44 - rotary joint, 45 - connecting rod, 46 - pressing block, 4601 - inner cavity structure, 4602 - pipe joint structure, 47 - wedge - shaped push block, 471 - buffer soft pad, 48 - wedge - shaped slider, 481 - side support block, 49 - compression spring, 5 - self - locking rotary motor, 6 - electric heater, 7 - global temperature detector, 81 - support skateboard, 82 - lead screw, 83 - adjusting nut, 84 - friction bump, 9 - anti - collision beam test piece. Detailed implementation manners

[0029] The present invention will be specifically described below with reference to the drawings.

[0030] Embodiment 1

[0031] An impact resistance detection device for an automobile anti - collision beam in this embodiment, as Figures 1-10 shown, includes a support frame body 1, a mounting plate 2, a moving mechanism, a main hydraulic rod 41, an auxiliary hydraulic rod 42, a fixing block 43, a rotary joint 44, a connecting rod 45, a pressing block 46, a wedge - shaped push block 47, a wedge - shaped slider 48 and a side support block 481; a mounting plate 2 for fixing the anti - collision beam test piece 9 is fixedly connected to the support frame body 1; a moving mechanism is connected to the support frame body 1; a main hydraulic rod 41 and two auxiliary hydraulic rods 42 are sequentially connected to the moving mechanism; the telescopic end of the main hydraulic rod 41 is fixedly connected to a fixing block 43; a rotary joint 44 is rotatably connected inside the fixing block 43; a connecting rod 45 is connected inside the rotary joint 44; a pressing block 46 is fixedly connected to the connecting rod 45; a wedge - shaped push block 47 is fixedly connected to each of the left and right sides of the pressing block 46; a wedge - shaped slider 48 corresponding to the number and position of the wedge - shaped push blocks 47 is slidably connected to the fixing block 43; the telescopic ends of the two auxiliary hydraulic rods 42 are initially inserted into a corresponding wedge - shaped slider 48 respectively; a side support block 481 is fixedly connected to each of the two wedge - shaped sliders 48; the two side support blocks 481 initially jointly press closely against the pressing block 46.

[0032] As Figure 1 and Figure 2As shown in the figure, the moving mechanism is composed of a semi-circular track 31, a rotating slider 32, a semi-circular rack 33, a driving motor 34 and a gear 35; the semi-circular track 31 is fixedly connected to the front side of the support frame 1; the rotating slider 32 is slidably connected to the semi-circular track 31; the main hydraulic rod 41 and the two auxiliary hydraulic rods 42 are jointly installed on the rotating slider 32; the rear end of the rotating slider 32 is rotatably connected to the support frame 1 through a rotating shaft; the semi-circular rack 33 is fixedly connected to the semi-circular track 31; the driving motor 34 is installed on the rotating slider 32; the output shaft of the driving motor 34 is fixedly connected to the gear 35; the gear 35 meshes with the semi-circular rack 33.

[0033] As Figure 2 , Figure 3 and Figure 6 shown in the figure, the fixed block 43 is slidably connected to the rotating slider 32, so that the telescopic end of the main hydraulic rod 41 and the fixed block 43 can obtain the downward supporting force from the rotating slider 32; a buffer soft pad 471 is fixedly connected to each end of the two wedge-shaped push blocks 47 facing the corresponding wedge-shaped slider 48; a compression spring 49 is fixedly connected between each of the two wedge-shaped sliders 48 and the fixed block 43, and the compression spring 49 is sleeved outside the telescopic end of the corresponding auxiliary hydraulic rod 42; the connecting rod 45 is rotatably connected to the rotary joint 44; a self-locking rotary motor 5 is installed in the rotary joint 44; the rotating shaft of the self-locking rotary motor 5 is fixedly connected to the connecting rod 45.

[0034] When using a device for testing the impact resistance performance of an automobile anti-collision beam according to this embodiment, the tester installs the anti-collision beam test piece 9 on the mounting plate 2. Both sides of the anti-collision beam test piece 9 are provided with arc-shaped structures, and then the impact resistance performance detection work of the anti-collision beam test piece 9 can be carried out.

[0035] First, as Figure 8 shown in the figure, the rotating slider 32 and the main hydraulic rod 41 and the auxiliary hydraulic rods 42 connected thereto are in a state perpendicular to the middle part of the anti-collision beam test piece 9, and the pressing block 46 is in a state parallel to the middle part of the anti-collision beam test piece 9. Then, the main hydraulic rod 41 pushes the fixed block 43 to move backward along the rotating slider 32. The fixed block 43 pushes the pressing block 46 through the rotary joint 44 and the connecting rod 45 to perform the first collision impact on the middle part of the anti-collision beam test piece 9. At the same time, the two auxiliary hydraulic rods 42 on both sides respectively push the corresponding wedge-shaped sliders 48 connected thereto to drive the side support blocks 481 to move backward following the pressing block 46, so as to realize the cooperation of the main hydraulic rod 41 and the two auxiliary hydraulic rods 42 to jointly push the pressing block 46 to squeeze the middle part of the anti-collision beam test piece 9. During this process, both sides of the pressing block 46 are supported by the two auxiliary hydraulic rods 42 respectively. Therefore, the pressing block 46 will not deflect around the axis of the rotary joint 44, and the first collision impact of the impact resistance performance detection work of the anti-collision beam test piece 9 is completed.

[0036] After that, the main hydraulic rod 41 and the auxiliary hydraulic rod 42 drive the fixed blocks 43, rotary joints 44, connecting rods 45, pressing blocks 46 and wedge-shaped sliders 48 they are connected to move backward in reverse for reset. Then, the driving motor 34 drives the gear 35 to rotate. The gear 35 meshes with the semi-circular rack 33 to drive the rotary slider 32 to rotate along the semi-circular track 31 around the axis of the rotating shaft connecting it to the support frame 1, as Figure 9 shown. At this time, the rotary slider 32 and the main hydraulic rod 41 and the auxiliary hydraulic rod 42 connected thereto are in a state of being aligned with the side of the anti-collision beam test piece 9 in an inclined state. Then, according to the above steps, the main hydraulic rod 41 is used to push the fixed block 43 to move backward along the rotary slider 32. The fixed block 43 pushes the pressing block 46 through the rotary joint 44 and the connecting rod 45 to perform a second collision impact on the corresponding side of the anti-collision beam test piece 9. At the same time, the telescopic ends of the auxiliary hydraulic rods 42 on both sides do not extend outwards, and the fixed block 43 moving backward will push the wedge-shaped slider 48 to move backward together through the compression spring 49, so that the wedge-shaped slider 48 is separated from the telescopic end of the auxiliary hydraulic rod 42;

[0037] During the process of the pressing block 46 colliding with the anti-collision beam test piece 9, the side of the pressing block 46 far from the middle of the anti-collision beam test piece 9 contacts the anti-collision beam test piece 9 first. At this time, the wedge-shaped push block 47 on the side of the pressing block 46 far from the middle of the anti-collision beam test piece 9 does not receive the support from the corresponding auxiliary hydraulic rod 42. Therefore, the pressing block 46 will be blocked by the anti-collision beam test piece 9 and drive the connecting rod 45 and the rotary joint 44 to rotate around the axis of the rotary joint 44, so that the wedge-shaped push block 47 on the side of the pressing block 46 far from the middle of the anti-collision beam test piece 9 pushes the corresponding wedge-shaped slider 48 to move forward during the rotation. At the same time, the wedge-shaped slider 48 drives the corresponding compression spring 49 to compress. At the same time, the telescopic end of the auxiliary hydraulic rod 42 on the same side as the wedge-shaped slider 48 quickly extends outwards to align with the front side area of the fixed block 43. When the wedge-shaped slider 48 moves forward to contact the telescopic end of the auxiliary hydraulic rod 42, the pressing block 46 cannot push the wedge-shaped slider 48 to move. At this time, the pressing block 46 is in a state of being tangent to the contact arc surface of the anti-collision beam test piece 9, increasing the contact area between the pressing block 46 and the contact arc surface of the anti-collision beam test piece 9. Then, the main hydraulic rod 41 cooperates with the auxiliary hydraulic rod 42 to push the pressing block 46 to extrude the anti-collision beam test piece 9 in the current state, completing the second collision impact of the anti-impact performance detection work of the anti-collision beam test piece 9.

[0038] After that, continue to adjust the inclination angles of the rotary slider 32 and the main hydraulic rod 41 and the auxiliary hydraulic rod 42 connected thereto and the anti-collision beam test piece 9 aligned with the side area according to the above steps, so as to control the pressing block 46 to complete multiple collision impacts on the anti-collision beam test piece 9 for the anti-impact performance detection at different collision angles in sequence, simulate the anti-impact performance detection of continuous collisions in the actual use environment, and make the anti-impact performance detection result of the anti-collision beam test piece 9 have a high utilization value.

[0039] Before the pressing block 46 is used to detect the anti-impact performance of the anti-collision beam test piece 9, the self-locking rotary motor 5 can also be driven to drive the connecting rod 45 and the pressing block 46 connected thereto to rotate, as Figure 10 shown, so that the pressing block 46 is switched from the horizontal state to the vertical state, reducing the contact area when the pressing block 46 collides with the anti-collision beam test piece 9, realizing that the collision area of the pressing block 46 can be changed without replacing the pressing block 46, making the anti-impact performance detection work of the anti-collision beam test piece 9 more perfect. When the pressing block 46 is switched to the vertical state, the telescopic ends of the two auxiliary hydraulic rods 42 respectively push the two wedge-shaped sliders 48 backward until the two side support blocks 481 on the two wedge-shaped sliders 48 are both aligned with the front side area of the pressing block 46, and the two side support blocks 481 respectively provide anti-overturning limit support for the left and right sides of the pressing block 46, so that the pressing block 46 will not turn in the left and right directions when colliding with the anti-collision beam test piece 9.

[0040] When the main hydraulic rod 41 pushes the pressing block 46 in the vertical state to collide with the anti-collision beam test piece 9, a groove structure will be knocked out on the anti-collision beam test piece 9 by the pressing block 46. At this time, the pressing block 46 is likely to be embedded and stuck in the groove structure of the anti-collision beam test piece 9. Therefore, before the main hydraulic rod 41 pulls the pressing block 46 to move away from the anti-collision beam test piece 9 in the reverse direction, the telescopic ends of the two auxiliary hydraulic rods 42 need to respectively push the two wedge-shaped sliders 48 to continue moving backward until the two side support blocks 481 on the two wedge-shaped sliders 48 are both closely attached to the surface of the anti-collision beam test piece 9 to provide limit support for it. Then, the main hydraulic rod 41 pulls the pressing block 46 to disengage from the groove structure of the anti-collision beam test piece 9 in the reverse direction. During this process, due to the limit support from the two side support blocks 481 on both sides of the groove structure of the anti-collision beam test piece 9, the stuck pressing block 46 will not pull the groove structure of the anti-collision beam test piece 9 to generate deformation in the reverse direction, so that the groove structure generated by the collision of the anti-collision beam test piece 9 will not be damaged, which is convenient for the subsequent tester to perform corresponding force analysis on the groove structure generated by the collision of the anti-collision beam test piece 9.

[0041] Embodiment 2

[0042] On the basis of Embodiment 1, as Figures 1-7As shown in the figure, an inner cavity structure 4601 is provided inside the pressing block 46 of this embodiment; two pipe joint structures 4602 that are jointly connected to the inner cavity structure 4601 are provided on the pressing block 46, and the two pipe joint structures 4602 are jointly externally connected to a heat transfer oil circulation and transportation device; the inner cavity structure 4601 of the pressing block 46 is provided with an S-shaped curve structure composed of a plurality of bending structures, which increases the total opening length of the inner cavity structure 4601 inside the pressing block 46 and improves the heat transfer efficiency of the pressing block 46 when the heat transfer oil flows through the inner cavity structure 4601; two electric heaters 6 are installed on the mounting plate 2.

[0043] Since the change in temperature will affect the impact resistance performance of the anti-collision beam test piece 9, in the actual use environment, when the anti-collision beam test piece 9 is installed at the front of the vehicle, the anti-collision beam test piece 9 will be affected by the thermal radiation of the power unit and its own temperature will rise.

[0044] Therefore, before the impact resistance performance detection work of the anti-collision beam test piece 9 is carried out in this embodiment, the two electric heaters 6 jointly heat the anti-collision beam test piece 9 until the temperature of the anti-collision beam test piece 9 is the same as the temperature that rises under the influence of the thermal radiation of the power unit in the actual use environment, so that the anti-collision beam test piece 9 participates in the impact resistance performance detection work under conditions closer to the actual use environment. At the same time, the externally connected heat transfer oil circulation and transportation device continuously circulates and transports heat transfer oil into the inner cavity structure 4601 of the pressing block 46 through the two pipe joint structures 4602. When it is necessary to simulate the actual use environment where the pressing block 46 is exposed to high temperatures in summer, the externally connected heat transfer oil circulation and transportation device heats the pressing block 46 to the corresponding high temperature state through the heat transfer oil. When it is necessary to simulate the actual use environment where the pressing block 46 is extremely cold in winter, the externally connected heat transfer oil circulation and transportation device cools the pressing block 46 to the corresponding low temperature state through the heat transfer oil. Subsequently, the pressing block 46 that has completed the corresponding temperature change can be used to test the impact resistance performance of the anti-collision beam test piece 9 that has completed the corresponding temperature change under the condition of adding the factor of the temperature of the actual use environment, so that the tester can observe whether there are significant changes in the impact resistance performance of the anti-collision beam test piece 9 under the influence of different environmental temperatures, and improve the available value of the impact resistance performance detection results of the anti-collision beam test piece 9.

[0045] As Figures 1-7 As shown in the figure, a global temperature measuring instrument 7 for globally monitoring the overall temperature and temperature change of the anti-collision beam test piece 9 is installed on the support frame body 1 of this embodiment.

[0046] In this embodiment, during the impact resistance detection of the bumper beam test piece 9 by the heated pressing block 46, the temperature on the pressing block 46 will be rapidly transferred to the collision impact area and the surrounding areas in all directions of the bumper beam test piece 9. During this process, the global thermometer 7 can record the temperature change data of the collision impact area and the surrounding areas in all directions of the bumper beam test piece 9. The tester analyzes the temperature change record data of the bumper beam test piece 9 provided by the global thermometer 7 to observe whether the deformation degree of the collision area of the bumper beam test piece 9 will be aggravated due to temperature changes, and judges whether the impact resistance of the material used in the current bumper beam test piece 9 is greatly affected by temperature changes, further improving the available value of the impact resistance detection result of the bumper beam test piece 9.

[0047] Embodiment 3

[0048] On the basis of Embodiment 1, as Figures 1-6 and Figure 11 and Figure 12 shown, a support slide plate 81 is slidably connected inside the pressing block 46 of this embodiment; two lead screws 82 are rotatably connected to the pressing block 46; the thread structures of the two lead screws 82 are both screwed to the support slide plate 81; an adjusting nut 83 is fixedly connected to each of the two lead screws 82; and a number of friction bumps 84 are provided on the support slide plate 81.

[0049] In this embodiment, in the initial state, the friction bumps 84 are in a state of being hidden inside the pressing block 46, and the rear side surface of the friction bumps 84 is flush with the rear side surface of the pressing block 46. When the main hydraulic rod 41 collides with the bumper beam test piece 9 on the pressing block 46, the friction bumps 84 provide frictional resistance on the pressing block 46 to prevent the pressing block 46 from slipping during the collision with the bumper beam test piece 9 and affecting the test effect of the impact resistance detection. In addition, the tester can also use the carried wrench to rotate the adjusting nut 83 to drive the lead screw 82 to rotate. The lead screw 82 drives the support slide plate 81 and the connected friction bumps 84 to move backward, so that the friction bumps 84 protrude out of the pressing block 46. At this time, the friction bumps 84 form a convex structure on the pressing block 46. When the main hydraulic rod 41 collides with the bumper beam test piece 9 on the pressing block 46, the convex structure of the friction bumps 84 on the pressing block 46 simulates an irregular object to collide with the bumper beam test piece 9, expanding the simulation scenario of the actual use environment of the impact resistance detection.

[0050] The above embodiments are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made according to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An impact resistance detection device for an automobile anti-collision beam, comprising a support frame body (1); an installation plate (2) for fixing an anti-collision beam test piece (9) is fixedly connected to the support frame body (1); characterized in that: It also includes a moving mechanism, a main hydraulic rod (41), an auxiliary hydraulic rod (42), a fixed block (43), a rotary joint (44), a connecting rod (45), a pressing block (46), a wedge-shaped pushing block (47), a wedge-shaped sliding block (48) and a side support block (481); a moving mechanism is connected to the support frame body (1); a main hydraulic rod (41) and two auxiliary hydraulic rods (42) are sequentially connected to the moving mechanism; the telescopic end of the main hydraulic rod (41) is fixedly connected with a fixed block (43); a rotary joint (44) is rotatably connected inside the fixed block (43); a connecting rod (45) is connected inside the rotary joint (44); a pressing block (46) is fixedly connected to the connecting rod (45); two wedge-shaped pushing blocks (47) that are symmetric about the left and right are fixedly connected to the pressing block (46); wedge-shaped sliding blocks (48) corresponding to the number and position of the wedge-shaped pushing blocks (47) are slidably connected to the fixed block (43); the telescopic end of the auxiliary hydraulic rod (42) is inserted into the corresponding wedge-shaped sliding block (48); a side support block (481) is fixedly connected to the wedge-shaped sliding block (48); the side support block (481) is closely attached to the pressing block (46).

2. The impact resistance detection device for an automotive anti-collision beam according to claim 1, characterized in that: The moving mechanism is composed of a semi-circular track (31), a rotary slider (32), a semi-circular rack (33), a driving motor (34) and a gear (35); the semi-circular track (31) is fixedly connected to the front side of the support frame body (1); the rotary slider (32) is slidably connected to the semi-circular track (31); the main hydraulic rod (41) and the two auxiliary hydraulic rods (42) are jointly installed on the rotary slider (32); the rear end of the rotary slider (32) is rotatably connected to the support frame body (1) through a rotating shaft; the semi-circular rack (33) is fixedly connected to the semi-circular track (31); the driving motor (34) is installed on the rotary slider (32); the output shaft of the driving motor (34) is fixedly connected with a gear (35); the gear (35) meshes with the semi-circular rack (33).

3. The anti-impact performance detection device for an automobile anti-collision beam according to claim 2, characterized in that: The fixed block (43) is slidably connected to the rotary slider (32).

4. The impact resistance detection device for an automobile anti-collision beam according to claim 1, characterized in that: One buffer soft pad (471) is fixedly connected to each end of the two wedge-shaped pushing blocks (47) facing the corresponding wedge-shaped sliding blocks (48).

5. The impact resistance detection device for an automobile anti-collision beam according to claim 1, wherein: One compression spring (49) is fixedly connected between each of the two wedge-shaped sliding blocks (48) and the fixed block (43).

6. The impact resistance detection device for an automobile anti-collision beam according to claim 1, wherein: The connecting rod (45) is rotatably connected to the rotary joint (44); a self-locking rotary motor (5) is installed inside the rotary joint (44); the rotating shaft of the self-locking rotary motor (5) is fixedly connected to the connecting rod (45).

7. An impact resistance detection device for an automobile anti-collision beam according to any one of claims 1-6, characterized in that: An inner cavity structure (4601) for the circulation of heat transfer oil is provided inside the pressing block (46); two pipe joint structures (4602) that are jointly connected to the inner cavity structure (4601) are provided on the pressing block (46).

8. An impact resistance detection device for an automobile anti-collision beam according to claim 7, characterized in that: The inner cavity structure (4601) of the pressing block (46) is provided with an S-shaped curve structure composed of multiple bending structures; an electric heater (6) for heating the anti-collision beam test piece (9) is installed on the mounting plate (2).

9. The anti-impact performance detection device for an automobile anti-collision beam according to claim 8, wherein: A global temperature measuring instrument (7) for globally monitoring the overall temperature and temperature change of the anti-collision beam test piece (9) is installed on the support frame body (1).

10. A device for detecting the impact resistance of an automobile anti-collision beam according to claim 9, characterized in that: A support slide plate (81) is slidably connected inside a pressing block (46); a lead screw (82) is rotatably connected to the pressing block (46); the threaded structure of the lead screw (82) is screwed to the support slide plate (81); an adjusting nut (83) is fixedly connected to the lead screw (82); and a plurality of friction bumps (84) are provided on the support slide plate (81).

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