A device for testing the impact strength of the four-beam assembly of the lower safety body of a vehicle

Abstract

The present invention relates to the technical field of automobile structure impact resistance test, and specifically to an impact resistance strength detection device for a four-beam assembly of a vehicle's lower end safety body, comprising a bottom plate, a lifting groove is provided on the top of the bottom plate, an electric lifting plate is fixedly connected inside the lifting groove, a plurality of supporting rotating seat groups are fixedly connected to the top of the electric lifting plate, a carrier frame is connected to the top of the supporting rotating seat group, a guide rail is fixedly connected to the inner side wall of the carrier frame, a booster assembly is arranged inside the carrier frame, the booster assembly comprises a slider and a plurality of roller groups, a limiting block is fixedly connected to the two side walls of the slider, the limiting block is slidably connected in the guide rail, and the rollers are installed on both sides of the slider; compared with the prior art, the present invention can perform comprehensive and diversified detection on the vehicle as a whole, so as to obtain more sufficient and diverse impact resistance data of the four-beam assembly of the vehicle's lower end safety body.

Description

Technical Field

[0001] The invention relates to the technical field of automobile structure impact resistance testing, in particular to an impact resistance strength testing device for a four-beam assembly of a vehicle lower end safety body. Background Art

[0002] The impact strength testing of vehicle components is extremely necessary. It can fully ensure the safety of passengers, effectively reduce the damage to the occupants in the vehicle in traffic accidents, help improve the overall quality and reliability of the vehicle, and encourage manufacturers to adopt high-quality materials and advanced processes, such as the use of high-quality anti-collision steel beams and energy-absorbing structures to enhance impact resistance, which is of great significance to improving vehicle quality and promoting industry development.

[0003] When conducting impact tests on vehicle components, current testing technology is unable to fully and effectively test some weak parts due to the limitation of testing angles. For example, during repeated collisions, the bottom of the four-beam assembly of the lower safety body of the vehicle is often difficult to fully test. This results in the inability to accurately obtain the impact performance data of these key parts during the subsequent research and development and improvement process, which seriously affects the formulation of targeted optimization measures and makes it difficult to effectively strengthen and optimize this important structure, thereby affecting the overall impact performance and safety level of the vehicle.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The object of the present invention is to provide a device for detecting the impact strength of a four-beam assembly of a vehicle lower end safety body, so as to solve the technical defects proposed by the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an impact strength detection device for a four-beam assembly of a vehicle lower end safety body, comprising a bottom plate, a lifting slot is provided on the top of the bottom plate, an electric lifting plate 1 is fixedly connected inside the lifting slot, a plurality of supporting rotating seat groups 1 are fixedly connected to the top of the electric lifting plate 1, a carrier frame is connected to the top of the supporting rotating seat group 1, a guide rail 1 is fixedly connected to the inner side wall of the carrier frame, and a booster assembly is provided inside the carrier frame;

[0007] The booster assembly includes a slider and multiple groups of rollers. The two side walls of the slider are fixedly connected to limit blocks, the limit blocks are slidably connected in a guide rail, the rollers are installed on both sides of the slider, and a high-power motor for driving the rollers to rotate is arranged inside the slider.

[0008] Furthermore, the bottom of the slider is fixedly connected to a frame, an electric push rod and a vertical rod, the bottom end of the vertical rod is fixedly connected to a slide rail, the output end of the electric push rod is fixedly connected to a sleeve 1, the side wall of the vertical rod is fixedly connected to a limiting sleeve, the sleeve 1 is slidably connected in the limiting sleeve, and the interior of the sleeve 1 is slidably connected to a slide rod 1.

[0009] Furthermore, the bottom end of the slide bar 1 is fixedly connected with the sleeve 2, the slide rail is slidably connected with a guide seat, the guide seat is fixedly connected with the end of the sleeve 2, and the sleeve 2 is slidably connected with an abutment rod;

[0010] The end of the abutment rod away from the second sleeve is fixedly connected to a connecting plate, and the other side wall of the connecting plate is rotatably connected to two connecting rods. The ends of the two connecting rods away from the connecting plate are rotatably connected to the side wall of the frame, and the bottom of the connecting plate is fixedly connected to a slide plate, and a carbon strip is installed at the bottom of the slide plate. Compression springs are arranged inside the first sleeve and the second sleeve.

[0011] Furthermore, the interior of the carrier frame is connected to a power-carrying wire through a connecting seat, and the power-carrying wire cooperates with the carbon bar. A sliding groove is provided on the top of the slider, and a lifting abutment block is slidably connected in the sliding groove. A compression spring for connecting the slider is provided in the sliding groove, and a top block is fixedly connected to the top of the slider. Anti-slip gaskets are fixedly installed in the top grooves of the lifting abutment block and the top block.

[0012] Furthermore, guide rails 2 are provided on both sides of the top of the bottom plate, an impact block is slidably connected inside the guide rails 2, and a ramp block is fixedly connected to the bottom of the impact block.

[0013] Furthermore, the top of the electric lifting plate is rotatably connected to multiple groups of top support push rods, the bottom of the carrier frame is fixedly connected to a driving rail, the output end of the top support push rod is fixedly connected to a convex block, the convex block is slidably connected to the driving rail, and the top of the bottom plate is symmetrically fixedly connected to a linear track;

[0014] A sliding seat is slidably connected in the linear track, an electric lifting plate 2 is fixedly installed on the top of the sliding seat, a supporting rotating seat group 2 is fixedly connected to the top of the electric lifting plate 2, the top of the supporting rotating seat group 2 is connected to the bottom of the guide rail 2, the bottom of the guide rail 2 is fixedly connected to the driving rail 2, the top of the electric lifting plate 2 is fixedly connected to the top support push rod 2, the output end of the top support push rod 2 is fixedly connected to the protrusion 2, and the protrusion 2 is slidably connected in the driving rail 2.

[0015] Furthermore, an electric push cylinder is fixedly installed inside the sliding block, an output end of the electric push cylinder is fixedly connected to a plug-in block, and a side wall of the lifting abutment block is provided with a plug-in groove that matches the plug-in block.

[0016] Furthermore, the inner wall of the carrier frame is fixedly connected to a cross plate frame, the interior of the cross plate frame is fixedly connected to an impact cylinder, an impact hammer is slidably connected to the impact cylinder, the side wall of the cross plate frame is movably connected to a swing rod through a bearing, the side wall of the swing rod is rotatably connected to a pull rod, one end of the pull rod is rotatably connected to the end of the impact hammer, and the outer wall of the cross plate frame is fixedly connected to a motor for driving the swing rod to rotate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When the present invention is in use, the structures of the top support push rod 1, the top support push rod 2, the driving rail 1 and the driving rail 2 are mutually adjusted to make the guide rail 1 and the guide rail 2 of the adjusted angle always remain parallel, the slider drives the impact block to slide in a directional manner in the adjusted guide rail 2, and the impact block is released after accelerating to a specified speed, thereby obtaining impact resistance test data in different directions, and by changing the current released by the energized wire or the initial velocity provided by the slider to the impact hammer, the impact block obtains different accelerations, thereby obtaining impact resistance test data of different strengths, and sharp objects of different shapes or materials are placed on the top of the impact block to impact the four-beam assembly of the safety body at the lower end of the vehicle, thereby obtaining impact resistance test data of different sharp objects;

[0019] That is, the test and detection device involved in the present invention has higher versatility than traditional technologies, and can simulate impact resistance conditions from multiple dimensions, including impact resistance conditions caused by different directions, different forces and different sharp objects. Whether it is a comprehensive simulation of these factors at the same time, or a separate simulation of a specific factor, through such a comprehensive and flexible simulation method, extremely sufficient and rich and diverse impact resistance data of the four-beam assembly of the lower end safety body of the vehicle can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0021] Figure 1 A three-dimensional diagram of the booster assembly of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the impact hammer in the present invention;

[0023] Figure 3 It is a cross-sectional view of the internal structure of the slider in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the booster assembly in the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the carrier frame in the present invention;

[0026] Figure 6 It is a front view of the overall structure of the present invention;

[0027] Figure 7 It is a schematic diagram of two-direction adjustment of the guide rail in the present invention.

[0028] Figure numerals: 1, bottom plate; 2, lifting slot; 301, electric lifting plate 1; 302, electric lifting plate 2; 401, support rotating seat group 1; 402, support rotating seat group 2; 5, carrier frame; 501, guide rail 1; 502, guide rail 2; 6, booster assembly; 601, slider; 602, roller; 603, electric push rod; 604, vertical rod; 605, slide rail; 606, sleeve 1; 607, slide rod 1; 608, sleeve 2; 609, guide seat; 610, abutment rod; 611, connecting plate; 612, connecting rod; 613, slide plate ;614, carbon bar;7, limit block;8, frame;801, limit sleeve;9, power-carrying wire;101, lifting abutment block;102, top block;11, anti-skid pad;12, impact block;13, inclined block;141, top support push rod one;142, top support push rod two;151, drive rail one;152, drive rail two;16, linear rail;17, sliding seat;18, electric push cylinder;19, plug-in block;20, plug-in slot;21, cross plate frame;22, impact cylinder;23, impact hammer;24, swing rod;25, pull rod;26, motor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1: Figure 1-Figure 7 As shown, an impact strength testing device for a four-beam assembly of a vehicle lower end safety body comprises a bottom plate 1, a lifting slot 2 is provided on the top of the bottom plate 1, an electric lifting plate 301 is fixedly connected inside the lifting slot 2, a plurality of supporting rotating seat groups 401 are fixedly connected to the top of the electric lifting plate 301, a carrier frame 5 is connected to the top of the supporting rotating seat group 401, a guide rail 501 is fixedly connected to the inner side wall of the carrier frame 5, and a booster assembly 6 is provided inside the carrier frame 5;

[0031] The booster assembly 6 includes a slider 601 and multiple groups of rollers 602. The two side walls of the slider 601 are fixedly connected to the limit blocks 7. The limit blocks 7 are slidably connected in the guide rail 501. The rollers 602 are installed on both sides of the slider 601. A high-power motor for driving the rollers 602 to rotate is provided inside the slider 601. The ordinary motor for driving the rollers 602 to rotate is replaced with a high-power motor to increase the output torque of the motor, thereby accelerating the rotation speed of the rollers 602, and prompting the slider 601 to move quickly under the action of the limit blocks 7.

[0032] The bottom of the slider 601 is fixedly connected to the frame 8, the electric push rod 603 and the vertical rod 604, the bottom end of the vertical rod 604 is fixedly connected to the slide rail 605, the output end of the electric push rod 603 is fixedly connected to the sleeve 1 606, the side wall of the vertical rod 604 is fixedly connected to the limiting sleeve 801, the sleeve 1 606 is slidably connected in the limiting sleeve 801, and the inside of the sleeve 1 606 is slidably connected to the slide rod 1 607.

[0033] The bottom end of the slide bar 1 607 is fixedly connected with the sleeve 2 608, and a guide seat 609 is slidably connected in the slide rail 605. The guide seat 609 is fixedly connected to the end of the sleeve 2 608. An abutment rod 610 is slidably connected in the sleeve 2 608. The end of the abutment rod 610 away from the sleeve 2 608 is fixedly connected to the connecting plate 611, and the other side wall of the connecting plate 611 is rotatably connected to two connecting rods 612. The ends of the two connecting rods 612 away from the connecting plate 611 are rotatably connected to the side wall of the frame 8. A slide plate 613 is fixedly connected to the bottom of the connecting plate 611, and a carbon bar 614 is installed at the bottom of the slide plate 613. Compression springs are arranged inside the sleeve 1 606 and the sleeve 2 608. The inside of the carrier frame 5 is connected with a power-carrying wire 9 through a connecting seat, and the power-carrying wire 9 cooperates with the carbon bar 614.

[0034] During the specific setting, an initial speed is provided to the slider 601, and the slider 601 starts to slide in the guide rail 501. At this time, the carbon bar 614 contacts the energized wire 9. At this time, the power-using structures in the slider 601 are all energized, and the high-power motor inside the slider 601 is driven to operate, thereby driving the roller 602 to rotate at a high speed. The slider 601 can slide stably in the guide rail 501 under the action of the limit blocks 7 set on both sides. In order to avoid the problem of unstable power supply to the power-using structures inside the slider 601 due to insufficient contact or intermittent contact between the carbon bar 614 and the energized wire 9, that is, the carbon bar 614 is not in parallel with the energized wire 9, in order to solve this problem, the specific improvements are as follows:

[0035] An electric push rod 603 is arranged at the bottom of the slider 601. The slider 613 contacts the energized wire 9 through the carbon strip 614 at the bottom thereof. When the carbon strip 614 is worn, the electric push rod 603 drives the sleeve 1 606 to slide downward. During the sliding downward process of the sleeve 1 606, the slide rod 1 607 is driven to descend synchronously. During the synchronous descending process, the slide rod 1 607 drives the sleeve 2 608 to slide in the slide rail 605 by means of the guide seat 609. The sleeve 2 608 slides stably and The connecting plate 611 is driven to descend synchronously, thereby further driving the two groups of connecting rods 612 to deflect synchronously, and the abutment rod 610 slides in the second sleeve 608, the sliding rod 1 607 slides in the first sleeve 606, and the two groups of connecting rods 612 are utilized to realize the mutual coordination of multiple linkages, so that the contact surface of the carbon bar 614 at the bottom of the slide plate 613 always maintains parallel contact with the power-carrying wire 9 during the synchronous lifting process, further ensuring the stable power supply to the internal power structure of the slider 601, so that the slider 601 always maintains stable acceleration.

[0036] Embodiment 2: The inner side wall of the carrier frame 5 is fixedly connected with a horizontal plate frame 21, the interior of the horizontal plate frame 21 is fixedly connected with an impact cylinder 22, an impact hammer 23 is slidably connected in the impact cylinder 22, the side wall of the horizontal plate frame 21 is movably connected with a swing rod 24 through a bearing, the side wall of the swing rod 24 is rotatably connected with a pull rod 25, one end of the pull rod 25 is rotatably connected to the end of the impact hammer 23, and the outer side wall of the horizontal plate frame 21 is fixedly connected with a motor 26 for driving the swing rod 24 to rotate;

[0037] In order to increase the initial velocity of the slider 601, the motor 26 outputs different powers to drive the swing rod 24 to rotate at different speeds. The swing rod 24 uses the pull rod 25 to drive the impact hammer 23 to move back and forth. The impact hammer 23 hits the slider 601 under the action of the pull rod 25 and the swing rod 24 and other structures, so that the slider 601 has a certain initial velocity, further shortening the acceleration time of the slider 601, and at the same time providing a stronger impact force for the impact block 12, thereby improving the impact effect on the four-beam assembly of the lower end safety body of the vehicle.

[0038] Guide rails 502 are also provided on both sides of the top of the bottom plate 1. An impact block 12 is slidably connected in the guide rails 502. The bottom of the impact block 12 is fixedly connected to an inclined block 13. The top of the electric lifting plate 301 is rotatably connected to multiple groups of top support push rods 141. The bottom of the carrier frame 5 is fixedly connected to a driving rail 151. The output end of the top support push rod 141 is fixedly connected to a protrusion 1. The protrusion 1 is slidably connected in the driving rail 151. The top of the bottom plate 1 is symmetrically fixedly connected to a linear track 16.

[0039] A sliding seat 17 is slidably connected in the linear rail 16, and an electric lifting plate 302 is fixedly installed on the top of the sliding seat 17. The top of the electric lifting plate 302 is fixedly connected to a supporting rotating seat group 402. The top of the supporting rotating seat group 402 is connected to the bottom of the guide rail 502. The bottom of the guide rail 502 is fixedly connected to a driving rail 152. The top of the electric lifting plate 302 is fixedly connected to a top support push rod 142. The output end of the top support push rod 142 is fixedly connected to a protrusion 2, and the protrusion 2 is slidably connected in the driving rail 152.

[0040] An electric push cylinder 18 is fixedly installed inside the slider 601, and a plug-in block 19 is fixedly connected to the output end of the electric push cylinder 18. A plug-in groove 20 matching the plug-in block 19 is provided on the side wall of the lifting abutment block 101. A slide groove is provided on the top of the slider 601, and the lifting abutment block 101 is slidably connected in the slide groove. A compression spring for connecting the slider 601 is provided in the slide groove. A top block 102 is also fixedly connected to the top of the slider 601, and anti-slip pads 11 are fixedly installed in the top grooves of the lifting abutment block 101 and the top block 102.

[0041] During the specific setting, in order to achieve a smoother release of the impact block 12, when the impact block 12 is accelerated to the specified speed, the electric push cylinder 18 drives the plug-in block 19 to disengage from the plug-in slot 20, and the roller 602 is braked. At this time, the impact block 12 continues to move forward with the inclined block 13, and then the inclined block 13 cooperates with the inclined surface of the lifting abutment block 101. The lifting abutment block 101 is squeezed into the slide groove under the action of the inclined block 13, which enables the impact block 12 to be released more smoothly.

[0042] In order to simulate the impact strength test of the four-beam assembly of the lower end safety body of the vehicle in different directions, different forces and different sharp objects, the present invention makes corresponding structural adjustments for the tests with the above three different requirements;

[0043] like Figure 6 and Figure 7 As shown, Figure 7The second guide rail 502 is in an adjustment state, and is used to transport the impact block 12 in different directions, so as to realize the impact resistance test of the four-beam assembly of the lower end safety body of the vehicle in different directions. The four-beam assembly of the lower end safety body of the vehicle is fixed on one side. When it is necessary to perform the impact resistance strength test of the four-beam assembly of the lower end safety body of the vehicle in different directions, the structures such as the top support push rod 141, the top support push rod 2 142, the driving rail 1 151 and the driving rail 2 152 are mutually adjusted to make the guide rail 1 501 and the guide rail 2 502 in a parallel state. With the cooperation of the electric lifting plate 1 301 and the electric lifting plate 2 302, the inclined surface block 13 is brought into full contact with the lifting abutment block 101 and the top block 102. The slider 601 utilizes the cooperation of the lifting abutment block 101, the top block 102 and the inclined surface block 13 to drive the impact block 12 to slide inwardly on the adjusted guide rail 2 502. When the impact block 12 is accelerated to a specified speed, the impact block 12 is released to collide with the four-beam assembly of the safety body at the lower end of the vehicle, thereby obtaining impact resistance test data in different directions.

[0044] When simulating impact tests of different strengths, by changing the current released by the energized wire 9 or changing the initial velocity of the slider 601 provided by the impact hammer 23, the impact block 12 can obtain different accelerations. According to Newton's second law, , where F represents the force, m represents the mass of the object, and a represents the acceleration, thereby simulating the impact resistance of different forces and obtaining the impact resistance test data of different forces;

[0045] When simulating the impact strength test of different sharp objects, that is, placing sharp objects of different shapes or materials on the top of the impact block 12, using the sharp objects to impact the four-beam assembly of the safety body at the lower end of the vehicle, and then obtaining the impact test data of different sharp objects;

[0046] The test and detection device of the present invention has higher versatility, that is, it can simulate the impact resistance from different directions, different forces and different sharp objects simultaneously or separately, so as to obtain more sufficient and diverse impact resistance data of the four-beam assembly of the lower end safety body of the vehicle.

[0047] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for testing the impact strength of a four-beam assembly of a vehicle lower end safety body, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is provided with a lifting groove (2), the interior of the lifting groove (2) is fixedly connected with an electric lifting plate (301), the top of the electric lifting plate (301) is fixedly connected with a plurality of supporting rotating seat groups (401), the top of the supporting rotating seat group (401) is connected with a carrier frame (5), the inner side wall of the carrier frame (5) is fixedly connected with a guide rail (501), and the interior of the carrier frame (5) is provided with a booster assembly (6); The boosting assembly (6) comprises a slider (601) and a plurality of groups of rollers (602), the two side walls of the slider (601) being fixedly connected to limit blocks (7), the limit blocks (7) being slidably connected in the guide rail (501), the rollers (602) being mounted on both sides of the slider (601), and a high-power motor for driving the rollers (602) to rotate is arranged inside the slider (601); The interior of the carrier frame (5) is connected to a power-carrying wire (9) via a connecting seat, the power-carrying wire (9) cooperates with the carbon bar (614), a slide groove is provided at the top of the slider (601), a lifting abutment block (101) is slidably connected in the slide groove, a compression spring for connecting the slider (601) is provided in the slide groove, a top block (102) is fixedly connected to the top of the slider (601), and anti-slip pads (11) are fixedly installed in the top grooves of the lifting abutment block (101) and the top block (102); A second guide rail (502) is also provided on both sides of the top of the bottom plate (1), an impact block (12) is slidably connected inside the second guide rail (502), and a slope block (13) is fixedly connected to the bottom of the impact block (12); The top of the electric lifting plate (301) is rotatably connected to a plurality of groups of top support push rods (141), the bottom of the carrier frame (5) is fixedly connected to a driving rail (151), the output end of the top support push rod (141) is fixedly connected to a convex block (1), the convex block (1) is slidably connected in the driving rail (151), and the top of the bottom plate (1) is symmetrically fixedly connected to a linear track (16); A sliding seat (17) is slidably connected inside the linear track (16), an electric lifting plate 2 (302) is fixedly installed on the top of the sliding seat (17), a supporting rotating seat group 2 (402) is fixedly connected to the top of the electric lifting plate 2 (302), the top of the supporting rotating seat group 2 (402) is connected to the bottom of the guide rail 2 (502), the bottom of the guide rail 2 (502) is fixedly connected to the driving rail 2 (152), the top of the electric lifting plate 2 (302) is fixedly connected to the top support push rod 2 (142), the output end of the top support push rod 2 (142) is fixedly connected to the protrusion 2, and the protrusion 2 is slidably connected inside the driving rail 2 (152); An electric push cylinder (18) is fixedly installed inside the sliding block (601), an output end of the electric push cylinder (18) is fixedly connected to a plug-in block (19), and a plug-in groove (20) matching with the plug-in block (19) is formed on the side wall of the lifting abutment block (101); The inner side wall of the carrier frame (5) is fixedly connected to a transverse frame (21), the interior of the transverse frame (21) is fixedly connected to an impact tube (22), an impact hammer (23) is slidably connected inside the impact tube (22), the side wall of the transverse frame (21) is movably connected to a swing rod (24) via a bearing, the side wall of the swing rod (24) is rotatably connected to a pull rod (25), one end of the pull rod (25) is rotatably connected to the end of the impact hammer (23), and the outer side wall of the transverse frame (21) is fixedly connected to a motor (26) for driving the swing rod (24) to rotate; The specific process of obtaining impact test data is as follows: An initial speed is provided to the slider (601), and the slider (601) starts to slide in the guide rail (501). At this time, the carbon strip (614) contacts the energized wire (9), and the power-using structures in the slider (601) are energized, driving the high-power motor inside the slider (601) to operate, thereby driving the roller (602) to rotate at a high speed. The slider (601) can slide stably in the guide rail (501) under the action of the limit blocks (7) arranged on both sides; By using the mutual coordination and adjustment of structures such as the top support push rod 1 (141), the top support push rod 2 (142), the driving rail 1 (151) and the driving rail 2 (152), the guide rail 1 (501) and the guide rail 2 (502) are caused to be in a parallel state. The slider (601) uses the coordination of the lifting abutment block (101), the top block (102) and the inclined surface block (13) to drive the impact block (12) to slide in a directional manner in the adjusted guide rail 2 (502). When the impact block (12) is accelerated to a specified speed, the impact block (12) is released to collide with the four-beam assembly of the vehicle lower end safety body by itself, thereby obtaining impact resistance test data in different directions.

2. The device for detecting the impact strength of the four-beam assembly of the lower end safety body of a vehicle according to claim 1, characterized in that: The bottom of the slider (601) is fixedly connected to a frame (8), an electric push rod (603) and a vertical rod (604); the bottom end of the vertical rod (604) is fixedly connected to a slide rail (605); the output end of the electric push rod (603) is fixedly connected to a sleeve 1 (606); the side wall of the vertical rod (604) is fixedly connected to a limiting sleeve (801); the sleeve 1 (606) is slidably connected inside the limiting sleeve (801); and the interior of the sleeve 1 (606) is slidably connected to a slide rod 1 (607).

3. The device for detecting the impact strength of the four-beam assembly of the lower safety body of a vehicle according to claim 2, characterized in that: The bottom end of the slide rod 1 (607) is fixedly connected to the sleeve 2 (608), the slide rail (605) is slidably connected to a guide seat (609), the guide seat (609) is fixedly connected to the end of the sleeve 2 (608), and the sleeve 2 (608) is slidably connected to an abutment rod (610); One end of the abutment rod (610) away from the second sleeve (608) is fixedly connected to a connecting plate (611), and the other side wall of the connecting plate (611) is rotatably connected to two connecting rods (612). One end of the two connecting rods (612) away from the connecting plate (611) is rotatably connected to the side wall of the frame (8), and a slide plate (613) is fixedly connected to the bottom of the connecting plate (611), and a carbon strip (614) is installed at the bottom of the slide plate (613). Compression springs are provided inside the first sleeve (606) and the second sleeve (608).

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