A compressive strength detector for electric vehicle frame

Abstract

The present invention relates to a compressive strength detector for an electric vehicle frame, comprising a frame, a first clamping device and a second clamping device respectively arranged at two ends of the frame, and a pressure device located above the first clamping device and the second clamping device and arranged on the frame; the pressure device comprises a base fixedly arranged on the frame, a moving rod movably arranged on the base, a pressure sensor fixedly arranged at the lower end of the moving rod, a driving component arranged on the frame and used to drive the moving rod to move, and an adapter component arranged at the lower end of the pressure sensor; the pressure of the present invention can be adjusted, and the downward pressing speed can be adjusted, and the compressive strength of the frame can be tested according to the bumpy road conditions during actual use. Each frame is tested multiple times, and the test results are conveniently compared, so that it can be judged whether the compressive strength of the frame is still within the required range after multiple uses.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and in particular to a compressive strength detector for an electric vehicle frame. Background Art

[0002] Electric vehicles are a common means of transportation in daily life, and the frame is an important component of the electric vehicle. Its structure is welded from multiple pipes. In order to ensure the safety of the frame during use, the strength of the frame needs to be tested after the frame is welded. In the existing technology, the pressure of the frame detector is fixed and the downward pressure speed is also fixed, resulting in the failure to test the compressive strength of the frame according to the bumpy road conditions during actual use. At the same time, each frame is only tested once, and no multiple tests are performed. There is no comparison of the test results, so it is impossible to determine whether the compressive strength of the frame is still within the required range after multiple uses. Summary of the Invention

[0003] In response to the problems in the prior art, the present invention provides an electric vehicle frame compressive strength detector with adjustable pressure and downward pressing speed. It can test the compressive strength of the frame according to the bumpy road conditions during actual use. Each frame is tested multiple times, and the test results are easy to compare, so that it can be determined whether the compressive strength of the frame is still within the required range after multiple uses.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an electric vehicle frame pressure resistance strength detector, comprising a frame, a first clamping device and a second clamping device respectively arranged at both ends of the frame, a pressure device located above the first clamping device and the second clamping device and arranged on the frame; the pressure device comprises a base fixed on the frame, a moving rod movably arranged on the base, a pressure sensor fixed at the lower end of the moving rod, a driving component arranged on the frame and used to drive the moving rod to move, and an adapter component arranged at the lower end of the pressure sensor; first, the frame is placed as a whole on the first clamping device and the second clamping device, the front end and the rear end of the frame are fixed respectively by the first clamping device and the second clamping device, the pressure device is started, the moving rod is driven to move back and forth by the driving component, the moving rod descends and drives the pressure sensor to descend, and at the same time the pressure sensor drives the adapter component to descend, and the adapter component contacts the frame, and the driving component controls the The distance and speed of the reciprocating movement of the moving rod are controlled, and the pressure sensor transmits the data to the display, and the peak value can be seen on the display. When the reciprocating distance and reciprocating speed of the moving rod are the same, the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. When the reciprocating distance of the moving rod is the same, the reciprocating speed changes in sequence, and the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. When the reciprocating distance of the moving rod is adjusted, the reciprocating speed is the same, and the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. When the reciprocating distance of the moving rod is adjusted, the reciprocating speed changes in sequence, and the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. The above settings facilitate subsequent comparisons. In summary, the pressure strength of the frame can be tested according to the bumpy road conditions during actual use.

[0005] Specifically, the driving assembly includes a driving shaft rotatably mounted on the frame, a first turntable fixedly mounted on the driving shaft, a screw with one end rotatably mounted on the first turntable, a first motor fixedly mounted on the first turntable and used to drive the screw to rotate, a first slider cooperating with the screw and movably mounted on the first turntable, and a connecting rod with one end rotatably mounted on the upper end of the moving rod and the other end rotatably mounted on the first slider.

[0006] The transmission gear of the second gear is connected with the transmission gear of the third gear by the spring which is fixed on the transmission gear of the second gear and the transmission gear of the third gear is connected with the transmission gear of the second gear to form a new transmission gear.

[0007] Specifically, the driving assembly also includes a movable disk arranged coaxially with the driving shaft, a cylinder fixed on the frame and used to drive the movable disk to move, a second turntable coaxially with the driving shaft and rotatably arranged on the movable disk, and one end of the slide is eccentrically fixed on the second turntable; the middle of the slide is telescopically arranged and is provided with two return spring rods.

[0008] Specifically, the adapter assembly includes a spring seat fixed to the lower end of the pressure sensor, a top plate located below the spring seat, a sphere rotatably arranged on the top plate, a support rod with its ends respectively fixed on the sphere and the spring seat, and a plurality of springs equidistantly distributed in an annular shape and fixed at both ends on the spring seat and the top plate.

[0009] The cam is fixedly mounted on the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame, wherein the cam is configured to move the movable base to the support frame,

[0010] Specifically, the fastening assembly includes a square rod fixed on the supporting block, a first clamping plate and a second clamping plate movably arranged on the square rod and the fixed rod respectively, a fixed plate located between the first clamping plate and the second clamping plate and fixed on the square rod, a third return spring sleeved on the square rod and fixed at both ends on the first clamping plate and the fixed plate respectively, a fourth return spring sleeved on the square rod and fixed at both ends on the second clamping plate and the fixed plate respectively, a fixed shaft fixed on the fixed plate, a rotating plate rotatably sleeved on the fixed shaft, a first arc groove and a second arc groove provided on the rotating plate, a first rod body with one end movably arranged in the first arc groove and the other end fixedly arranged on the first clamping plate, and a second rod body with one end movably arranged in the second arc groove and the other end fixedly arranged on the second clamping plate.

[0011] Specifically, a boost box is fixedly provided on the support block, the boost box is connected to the lifting pipe, a push rod is movably provided on the boost box, a through slot is provided on the push rod, a third rod body is movably provided in the through slot, a rotating rod is fixed on the third rod body, and one end of the rotating rod is fixedly provided at the center of the rotating plate.

[0012] The beneficial effects of the present invention are:

[0013] The front end and the rear end of the frame are fixed respectively by the first clamping device and the second clamping device, the pressure device is started, the driving component drives the moving rod to move back and forth, the moving rod descends and drives the pressure sensor to descend, and at the same time the pressure sensor drives the adapter component to descend, and the adapter component contacts the frame, and the driving component controls the reciprocating distance and speed of the moving rod. The pressure sensor transmits the data to the display, and the peak value can be seen on the display. When the reciprocating distance and reciprocating speed of the moving rod are the same, the highest peak value on the display is consistent after multiple tests, which means that the compressive strength of the frame is qualified. The reciprocating distance of the rod is the same, and the reciprocating speed changes in sequence. After multiple tests, the highest peak value on the display is consistent, which means that the frame compressive strength is qualified. When the reciprocating distance of the moving rod is adjusted, the reciprocating speed is the same, and the highest peak value on the display is consistent after multiple tests, which means that the frame compressive strength is qualified. When the reciprocating distance of the moving rod is adjusted, the reciprocating speed changes in sequence, and the highest peak value on the display is consistent after multiple tests, which means that the frame compressive strength is qualified. The above settings facilitate subsequent comparisons. In summary, the compressive strength of the frame can be tested according to the bumpy road conditions during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and examples.

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2It is a front schematic diagram of the present invention;

[0017] Figure 3 for Figure 2 Partial cross-sectional view along line AA;

[0018] Figure 4 for Figure 3 Enlarged view of point C in the figure;

[0019] Figure 5 for Figure 3 Partial cross-sectional view of line BB;

[0020] Figure 6 for Figure 2 Cross-sectional view of line CC in FIG;

[0021] Figure 7 for Figure 6 The enlarged view of point D in the figure;

[0022] Figure 8 for Figure 6 Enlarged view of point E in the figure;

[0023] Figure 9 for Figure 6 Cross-sectional view of line DD in FIG;

[0024] Figure 10 for Figure 9 Enlarged view of point B in FIG.

[0025] Figure 11 for Figure 2 Structural cross-sectional view of line EE in FIG;

[0026] Figure 12 for Figure 11 A magnified view of point A in the figure;

[0027] Figure 13 for Figure 6 Partial cross-sectional view of line FF;

[0028] Figure 14 Schematic diagram of the structure of the rotating rod. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figures 1-14As shown, the present invention describes an electric vehicle frame pressure resistance strength detector, comprising a frame 1, a first clamping device 2 and a second clamping device 3 respectively arranged at both ends of the frame, a pressure device 4 located above the first clamping device and the second clamping device and arranged on the frame; the pressure device 4 comprises a base 41 fixed on the frame, a moving rod 45 movably arranged on the base, a pressure sensor 43 fixed at the lower end of the moving rod, a driving component 44 arranged on the frame and used to drive the moving rod to move, and an adapter component 42 arranged at the lower end of the pressure sensor; first, place the entire frame on the first clamping device and the second clamping device, fix the front end and the rear end of the frame respectively by the first clamping device and the second clamping device, start the pressure device, drive the moving rod to move back and forth by the driving component, the moving rod descends and drives the pressure sensor to descend, and at the same time the pressure sensor drives the adapter component to descend, and the adapter component contacts the frame, and the driving component is used to adjust the pressure of the vehicle frame. The component controls the reciprocating distance and speed of the moving rod, and the pressure sensor transmits the data to the display, and the peak value can be seen on the display. When the reciprocating distance of the moving rod is the same and the reciprocating speed is the same, the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. When the reciprocating distance of the moving rod is the same and the reciprocating speed changes in sequence, the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. When the reciprocating distance of the moving rod is adjusted and the reciprocating speed is the same, the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. When the reciprocating distance of the moving rod is adjusted and the reciprocating speed changes in sequence, the highest peak value on the display is consistent after multiple tests, which means that the frame pressure strength is qualified. The above settings facilitate subsequent comparisons. In summary, the pressure strength of the frame can be tested according to the bumpy road conditions during actual use.

[0031] Specifically, the driving assembly 44 includes a driving shaft 441 rotatably mounted on the frame, a first rotary disk 442 fixedly sleeved on the driving shaft, a screw 443 rotatably mounted on the first rotary disk at one end, a first motor 444 fixedly mounted on the first rotary disk and used to drive the screw to rotate, a first slider 445 cooperating with the screw and movably mounted on the first rotary disk, and a connecting rod 446 rotatably mounted on the upper end of the moving rod at one end and rotatably mounted on the first slider at the other end; the driving shaft rotates to drive the first rotary disk to rotate, so that the screw on the first rotary disk and the first motor are fixedly mounted on the first rotary disk and used to drive the screw to rotate. The first motor drives the screw rod to rotate, so that the first slider moves on the first turntable, and the first slider moves closer to or away from the center of the first turntable, thereby changing the reciprocating distance of the moving rod. When the first slider approaches the center of the first turntable, the reciprocating distance of the moving rod becomes smaller, and the pressing force on the frame becomes smaller. Conversely, when the first slider moves away from the center of the first turntable, the reciprocating distance of the moving rod becomes larger, and the pressing force on the frame becomes larger.

[0032] Specifically, the driving assembly 44 also includes a first gear 447, a second gear 448 and a third gear 449 rotatably sleeved on the driving shaft in sequence, a driving shaft 450 located on one side of the driving shaft and rotatably mounted on the frame, a fourth gear 451 fixedly sleeved on the driving shaft and meshing with the first gear, a fifth gear 452 fixedly sleeved on the driving shaft and meshing with the second gear, a sixth gear 453 fixedly sleeved on the driving shaft and meshing with the third gear, a second motor 454 fixedly mounted on the frame and used to drive the driving shaft to rotate, a slide 455 provided on the driving shaft, a first clamping groove 456 provided on the first gear, a second clamping groove 457 provided on the second gear, a third clamping groove 458 provided on the third gear, a slide 459 movably provided in the slide, and a clamping member 460 fixedly mounted on the slide; the spacing between the first gear and the second gear is the same as that between the second gear and the third gear. The spacing between the gear and the third gear is the same; the thickness of the clamping member is smaller than the spacing between the first gear and the second gear; the driving shaft is driven by the second motor to rotate, so that the fourth gear, the fifth gear and the sixth gear on the driving shaft rotate at the same time, driving the slide to move, so that the clamping member moves, and when the clamping member coincides with the first slot, the second slot and the third slot respectively, the driving shaft is fixedly connected to the first gear, the second gear and the third gear respectively, thereby changing the speed of the driving shaft; the thickness of the clamping member is smaller than the spacing between the first gear and the second gear, so that when the clamping member coincides with the second slot, it is separated from the first slot and the third slot, so that when the first gear drives the driving shaft to rotate, the second gear and the third gear are not driven. Similarly, when the second gear drives the driving shaft to rotate, the first gear and the third gear are not driven. When the third gear drives the driving shaft to rotate, the first gear and the second gear are not driven.

[0033] Specifically, the driving assembly 44 also includes a moving disk 461 arranged coaxially with the driving shaft, a cylinder 462 fixed on the frame and used to drive the moving disk to move, a second turntable 463 coaxially with the driving shaft and rotatably arranged on the moving disk, one end of the slide is eccentrically fixed on the second turntable; the middle of the slide is retractable and has two return spring rods 464; the moving disk is driven to move by the cylinder, so that the second turntable on the moving disk moves together, driving the slide on the second turntable to move, and the movement of the slide drives the card to move, and the main The rotation of the moving shaft drives the slide plate to rotate, so that the second turntable rotates, and the rotation setting between the second turntable and the moving plate prevents the moving plate and the cylinder from rotating; when the slide groove and the second clamping groove are misaligned, that is, the clamping piece is misaligned with the second clamping groove, the slide plate and one end of the clamping piece hit the second gear, and the second gear can continue to rotate. When the second clamping groove on the second gear coincides with the slide groove, the clamping piece can be stuck in the second clamping groove, so that the second gear drives the driving shaft to rotate. Through the setting of two reset spring rods, the slide plate can be automatically extended and retracted, which plays a good adaptation role.

[0034] Specifically, the adapter assembly 42 includes a spring seat 421 fixed to the lower end of the pressure sensor, a top plate 422 located below the spring seat, a sphere 423 rotatably arranged on the top plate, a support rod 424 fixed at both ends on the sphere and the spring seat, and a plurality of springs 425 equidistantly distributed in an annular shape and fixed at both ends on the spring seat and the top plate; the top plate contacts the frame seat cushion, and the sphere and the top plate are arranged so that the top plate can adapt to the angle when contacting the frame seat cushion. The top plate and the spring seat are connected through the support rod arrangement, and the spring seat is fixedly connected to the pressure sensor, which is equivalent to making the pressure sensor act on the frame. The sphere arrangement makes the top plate tilt in all directions. After pressure is applied to the frame, the frame itself has a shock-absorbing function, and the seat cushion is slightly tilted after being subjected to force. The above arrangement makes the top plate better adapt to the tilt angle of the frame seat cushion, and the top plate is reset later through multiple springs.

[0035] Specifically, the first clamping device 2 and the second clamping device 3 have the same structure and are symmetrically arranged. The first clamping device 2 includes a movable seat 21 movably arranged on the frame, a hydraulic cylinder 22 fixed on the movable seat and used to drive the movable seat to move, a plurality of first guide rods 23 fixed in parallel on the movable seat, a second slider 24 movably arranged on the first guide rod, two second guide rods 25 fixed in parallel on the second slider, a lifting tube 26 movably arranged on the second guide rod, a rotating rod 27 with one end movably inserted into the lifting tube and the other end rotatably arranged on the second slider, and a rotating rod The driven plate 28 is provided at the upper end of the rotating rod, the damping spring 29 is fixed on the driven plate and the lifting tube at both ends, the support block 210 is fixed on the upper end of the lifting tube, the fixed rod 211 is passed through and fixed on the support block, the first return spring 212 and the second return spring 213 are sleeved on the first guide rod, the arc spring rod 214 is fixed on the rotating rod and the second slider at both ends, the wave groove 215 is provided on the outer wall of the rotating rod, the torsion rod 216 is fixed on the lifting tube and one end is movable in the wave groove, and the two sets of fastening components are symmetrically provided at both ends of the support block; the vehicle is fixed by the fixed rod The frame is supported. When the frame is subjected to force, the support rod and the support block are lowered, and the lifting tube is lowered. The lowering of the lifting tube compresses the shock-absorbing spring, and at the same time, the torsion bar rotates and descends. One end of the torsion bar is movably arranged in the wave groove, so that the torsion bar rotates and the arc-shaped spring rod is compressed. The above-mentioned double shock-absorbing arrangement has a good shock-absorbing effect and is quickly reset to improve the service life of the overall shock absorption. The hydraulic cylinder drives the moving seat to move as a whole, and finally moves the fixed rod so that the fixed rod can be stuck on the frame to support the frame. When the frame is subjected to downward pressure, the front fork shock absorber and the rear shock absorber of the frame automatically extend and retract, thereby The position between the first clamping device and the fixing rod on the second clamping device will change, and the second slider can be movably set on the first guide rod to move the second slider, and finally move the fixing rod. After the position between the fixing rod on the first clamping device and the fixing rod on the second clamping device is changed, the distance between the two is automatically adapted. Subsequently, the second slider is reset by the first return spring and the second return spring to facilitate the next frame detection. The above setting can detect frames of different specifications, and at the same time, it can be detected without installing wheels, and the detection efficiency is high.

[0036] Specifically, the fastening assembly includes a square rod 217 fixed on the support block, a first clamping plate 218 and a second clamping plate 219 movably arranged on the square rod and the fixed rod respectively, a fixed plate 220 located between the first clamping plate and the second clamping plate and fixed on the square rod, a third return spring 221 sleeved on the square rod and with both ends fixed on the first clamping plate and the fixed plate respectively, a fourth return spring 222 sleeved on the square rod and with both ends fixed on the second clamping plate and the fixed plate respectively, a fixed shaft 223 fixed on the fixed plate, a rotating plate 224 rotatably sleeved on the fixed shaft, a first arc groove 225 and a second arc groove 226 provided on the rotating plate, one end of which is movably arranged in the first arc groove and The other end of the first rod 227 is fixed on the first clamping plate, and one end of the second rod 228 is movably arranged in the second arc groove and the other end is fixed on the second clamping plate; the rotating plate is rotated to make the first rod move along the first arc groove, and the second rod move along the second arc groove, and at the same time, the first rod and the second rod are moved closer to each other, and the first clamping plate and the second clamping plate are moved closer to each other, and the frame is clamped and fixed by the first clamping plate and the second clamping plate, and then the first clamping plate and the second clamping plate are reset by the third return spring and the fourth return spring to facilitate the detection of the next frame. The frame is clamped and fixed by the first clamping plate and the second clamping plate to prevent the frame from moving after being subjected to pressure and affecting the detection result.

[0037] Specifically, a boost box 229 is fixedly provided on the support block, and the boost box is connected to the lifting pipe. A push rod 230 is movably provided on the boost box, and a through slot 231 is provided on the push rod. A third rod body 232 is movably provided in the through slot, and a rotating rod 233 is fixedly provided on the third rod body, and one end of the rotating rod is fixedly provided at the center of the rotating plate; when the lifting pipe descends, the air inside the boost box enters the boost box, causing the push rod to move, and the push rod drives the third rod body to move, and causes the rotating rod to rotate, and causes the rotating plate to rotate. Through the above-mentioned arrangement, the vehicle frame is automatically fixed during detection, and the vehicle frame is automatically released after the detection is completed. The overall linkage is good, the first clamping device and the second clamping device can be used in conjunction with the pressure device, and the detection result is highly accurate.

[0038] The first motor, the second motor and the pressure sensor are purchased on the market.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An electric vehicle frame compressive strength detector, characterized by: The device comprises a frame, a first clamping device and a second clamping device respectively provided at two ends of the frame, and a pressure device located above the first clamping device and the second clamping device and provided on the frame; the pressure device comprises a base fixedly provided on the frame, a moving rod movably provided on the base, a pressure sensor fixedly provided at the lower end of the moving rod, a driving assembly provided on the frame and used to drive the moving rod to move, and an adapter assembly provided at the lower end of the pressure sensor; The driving assembly includes a driving shaft rotatably mounted on the frame, a first rotating disk fixedly mounted on the driving shaft, a screw with one end rotatably mounted on the first rotating disk, a first motor fixedly mounted on the first rotating disk and used to drive the screw to rotate, a first slider cooperating with the screw and movably mounted on the first rotating disk, and a connecting rod with one end rotatably mounted on the upper end of the moving rod and the other end rotatably mounted on the first slider; The driving assembly also includes a first gear, a second gear and a third gear that are rotatably sleeved on the driving shaft in sequence, a driving shaft located on one side of the driving shaft and rotatably mounted on the frame, a fourth gear fixedly sleeved on the driving shaft and meshed with the first gear, a fifth gear fixedly sleeved on the driving shaft and meshed with the second gear, a sixth gear fixedly sleeved on the driving shaft and meshed with the third gear, a second motor fixedly mounted on the frame and used to drive the driving shaft to rotate, a slide groove provided on the driving shaft, a first clamping groove provided on the first gear, a second clamping groove provided on the second gear, a third clamping groove provided on the third gear, a slide movably provided in the slide groove, and a clamping member fixed on the slide; the spacing between the first gear and the second gear is the same as the spacing between the second gear and the third gear; the thickness of the clamping member is smaller than the spacing between the first gear and the second gear; when the clamping member coincides with the first clamping groove, the second clamping groove and the third clamping groove respectively, the driving shaft is fixedly connected to the first gear, the second gear and the third gear respectively, thereby changing the speed of the driving shaft; The driving assembly also includes a movable disk arranged coaxially with the driving shaft, a cylinder fixed on the frame and used to drive the movable disk to move, a second turntable coaxially with the driving shaft and rotatably arranged on the movable disk, and one end of the slide is eccentrically fixed on the second turntable; the middle of the slide is telescopically arranged and has two return spring rods; the movable rod is driven to reciprocate by the driving assembly, and the reciprocating distance and speed of the movable rod are controlled by the driving assembly.

2. The electric vehicle frame compressive strength detector according to claim 1, characterized in that: The adapter assembly includes a spring seat fixed to the lower end of the pressure sensor, a top plate located below the spring seat, a sphere rotatably arranged on the top plate, a support rod with its two ends respectively fixed on the sphere and the spring seat, and a plurality of springs equidistantly distributed in an annular shape and with their two ends respectively fixed on the spring seat and the top plate.

3. The electric vehicle frame compressive strength detector according to claim 1, characterized in that: The first clamping device and the second clamping device have the same structure and are symmetrically arranged. The first clamping device includes a movable seat movably arranged on the frame, a hydraulic cylinder fixed on the movable seat and used to drive the movable seat to move, a plurality of first guide rods fixed in parallel to the movable seat, a second slider movably arranged on the first guide rod, two second guide rods fixed in parallel to the second slider, a lifting tube movably arranged on the second guide rod, a rotating rod with one end movably inserted into the lifting tube and the other end rotatably arranged on the second slider, a driven disk rotatably arranged on the upper end of the rotating rod, a shock-absorbing spring fixed at both ends to the driven disk and the lifting tube, a support block fixed at the upper end of the lifting tube, a fixed rod passing through and fixed on the support block, a first return spring and a second return spring sleeved on the first guide rod, an arc-shaped spring rod fixed at both ends to the rotating rod and the second slider, a wave groove provided on the outer wall of the rotating rod, a torsion rod fixed on the lifting tube and one end movably arranged in the wave groove, and two sets of fastening components symmetrically arranged at both ends of the support block.

4. The electric vehicle frame compressive strength tester according to claim 3, characterized in that: The fastening assembly includes a square rod fixed on the supporting block, a first clamping plate and a second clamping plate movably arranged on the square rod and the fixed rod respectively, a fixed plate located between the first clamping plate and the second clamping plate and fixed on the square rod, a third return spring sleeved on the square rod and with both ends fixed on the first clamping plate and the fixed plate respectively, a fourth return spring sleeved on the square rod and with both ends fixed on the second clamping plate and the fixed plate respectively, a fixed shaft fixed on the fixed plate, a rotating plate rotatably sleeved on the fixed shaft, a first arc groove and a second arc groove provided on the rotating plate, a first rod body with one end movably arranged in the first arc groove and the other end fixed on the first clamping plate, and a second rod body with one end movably arranged in the second arc groove and the other end fixed on the second clamping plate.

5. The electric vehicle frame compressive strength detector according to claim 3, characterized in that: A boost box is fixed on the support block, the boost box is connected to the lifting pipe, a push rod is movably provided on the boost box, a through slot is provided on the push rod, a third rod body is movably provided in the through slot, a rotating rod is fixed on the third rod body, and one end of the rotating rod is fixedly set at the center of the rotating plate.

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