A detection device based on high-strength plate strength performance test

Abstract

This invention relates to the field of high-strength steel plate performance testing technology, and particularly to a testing device based on high-strength steel plate strength performance testing. The device includes a main plate with a first slot at its upper end. An adjustable clamping mechanism is provided at the upper end of the main plate, comprising two first limiting slots. First motors are symmetrically connected to the sides of the main plate, and first threaded rods are fixedly connected to the drive shafts of the two first motors within the first limiting slots. A testing mechanism for inspecting the interior of a hollow high-strength steel plate is provided at the upper end of the main plate. A support mechanism for fitting into the side openings of the high-strength steel plate is provided within the first slot of the main plate. When the hollow protective plate is subjected to bending force, a fourth motor drives a fitting rod to rotate. The rotation angle of the fitting rod matches the bending angle of the hollow protective plate, thereby simulating the stress condition of a hollow protective plate installed on a car.

Description

Technical Field

[0001] This invention relates to the field of high-strength steel plate performance testing technology, and in particular to a testing device based on high-strength steel plate strength performance testing. Background Technology

[0002] The compressive strength test of high-strength steel plates is based on the standard for room temperature compression test of metallic materials. A universal testing machine is used to apply axial uniform pressure to the standard specimen, and load and deformation data are collected simultaneously. Stress-strain curves are plotted, and key parameters such as specified non-proportional compressive strength, compressive ultimate strength, and elastic modulus are calculated. The test is equipped with anti-buckling fixtures to avoid data deviation caused by the instability of thin plates under compression bending. Hollow automotive protective beams require compressive strength tests on the samples during production. The inner side of the protective beam has several mounting holes for connection with the automotive frame.

[0003] In existing technologies for compressive testing of hollow automotive protective beams, the beams are typically clamped onto a support frame, and pressure is applied to the beams via a hydraulic telescopic rod. This method cannot limit the movement of several mounting holes on the side of the protective beam during testing, and therefore cannot simulate the compressive performance of the beam under pressure after it is fixed to the vehicle through the mounting holes. Furthermore, the clamping mechanism in existing technologies cannot limit movement for protective beams of different sizes, resulting in low reliability. When testing the curvature of the protective beam, existing technologies cannot accurately detect the inner side of the hollow protective beam, leading to low detection accuracy. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a testing device based on the strength performance test of high-strength steel plates.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a testing device based on the strength performance test of high-strength steel plate, comprising a main plate, a first slot being provided at the upper end of the main plate, an adjustable clamping mechanism being provided at the upper end of the main plate, the adjustable clamping mechanism comprising two symmetrically provided first limiting slots at the upper end of the main plate, a first motor being symmetrically connected to the side of the main plate, a first threaded rod being fixedly connected to the transmission shaft ends of the two first motors respectively in the first limiting slots, two symmetrically arranged first limiting bodies being slidably connected to the main plate in the two first limiting slots, a testing mechanism for testing the interior of hollow high-strength steel plate being provided at the upper end of the main plate, a support mechanism for fitting the side holes of the high-strength steel plate being provided in the first slot of the main plate, and a pressure applying mechanism being provided at the upper end of the main plate.

[0006] Preferably, the two first limiting bodies are respectively configured to engage with the first threaded rod in different directions of rotation. The upper ends of the two first limiting bodies are respectively provided with first placement grooves. The two first limiting bodies are respectively fixedly connected to the first electric telescopic rods in the first placement grooves. The telescopic ends of the two first electric telescopic rods are respectively fixedly connected to the first extrusion plates. The upper ends of the two first limiting bodies are fixedly connected to the fixing rings that slide in cooperation with the telescopic ends of the first electric telescopic rods.

[0007] Preferably, a first compression plate is fixedly connected to the telescopic ends of the two first electric telescopic rods, a second electric telescopic rod is fixedly connected to the sides of the two first compression plates, a first extension plate is fixedly connected to the telescopic ends of the two second electric telescopic rods, a second compression plate is fixedly connected to the sides of the two fixed rings, a third electric telescopic rod is fixedly connected to the sides of the two second compression plates, and a second extension plate is fixedly connected to the telescopic ends of the two third electric telescopic rods.

[0008] Preferably, the support mechanism includes a second limiting groove formed at the lower end of the first slot, a plurality of second limiting bodies slidably connected to the main body plate within the second limiting groove, a first fixing body fixedly connected to the upper end of each of the plurality of second limiting bodies, a fourth limiting groove formed at the upper end of each of the plurality of first fixing bodies, a plurality of sliding bodies slidably connected to each of the first fixing bodies within the fourth limiting groove, a fifth electric telescopic rod fixedly connected to the upper end of each of the plurality of sliding bodies, a second fixing body fixedly connected to the telescopic ends of each of the plurality of fifth electric telescopic rods, a second motor fixedly connected to the side of the main body plate, a second threaded rod fixedly connected to the drive shaft end of the second motor, and the second threaded rod and the second limiting body being configured through threaded engagement.

[0009] Preferably, a third slot is provided at the upper end of each of the plurality of second fixing bodies, a fourth motor is fixedly connected to the side of each of the plurality of second fixing bodies, a cavity is provided on the side of each of the plurality of second fixing bodies, a sixth electric telescopic rod is fixedly connected to the drive shaft end of each of the plurality of fourth motors in the cavity, a matching rod is fixedly connected to the telescopic end of each of the plurality of sixth electric telescopic rods, and a rotating body is rotatably connected to the inner side of each of the plurality of second fixing bodies.

[0010] Preferably, the first fixing body is fixedly connected to a third motor in the third limiting groove, the drive shaft end of the third motor is fixedly connected to a third threaded rod, and the sides of several sliding bodies are provided with through holes, and each of the several through holes is provided with a mating ring.

[0011] Preferably, the inner sides of the plurality of mating rings are respectively threadedly engaged with the third threaded rod, and the sides of the plurality of mating rings are provided with four second slots distributed at equal angles. The plurality of mating rings are respectively fixedly connected to the fourth electric telescopic rods in the second slots, and the telescopic ends of the plurality of fourth electric telescopic rods are respectively fixedly connected to the top blocks.

[0012] Preferably, the detection mechanism includes a second placement slot on the upper part of the main body plate, a seventh electric telescopic rod is fixedly connected to the main body plate in the second placement slot, a multi-stage electric telescopic rod is fixedly connected to the telescopic end of the seventh electric telescopic rod, a third fixing body is fixedly connected to the telescopic end of the multi-stage electric telescopic rod, and a third placement slot is opened at the upper end of the third fixing body.

[0013] Preferably, a fifth motor is fixedly connected to the side of the third fixing body, and a fixing plate is fixedly connected to the drive shaft end of the fifth motor in the third placement groove. Guide grooves are respectively opened on the upper end of the third fixing body, and pressure sensors are fixedly connected to the third fixing body in the two guide grooves respectively. Springs are fixedly connected to the ends of the two pressure sensors respectively, and top bodies are fixedly connected to the ends of the two springs respectively. A detector is fixedly connected to the end of the fixing plate.

[0014] Preferably, the pressure-applying mechanism includes two hydraulic telescopic rods symmetrically arranged on the upper part of the main body plate. The telescopic ends of the two hydraulic telescopic rods are fixedly connected to a fourth fixing body. The lower end of the fourth fixing body is fixedly connected to a connecting body. The lower end of the connecting body is fixedly connected to a top plate. The lower end of the main body plate is symmetrically connected to a support column.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The first electric telescopic rod retracts, and at the same time, the second and third electric telescopic rods extend and retract synchronously. The second and third electric telescopic rods respectively drive the first extension plate and the second extension plate to move to the side of the protective plate. The first electric telescopic rod drives the first extrusion plate to move downward, thereby clamping the protective plates of different widths and lengths and improving the practicality of the device. 2. The fifth electric telescopic rod drives the second fixed body to move upward. Then the fourth motor starts and places the mating rod corresponding to the mounting hole of the protective plate into the second fixed body. Then the sixth electric telescopic rod extends and clamps the mating rod. The top of the mating rod engages with the mounting hole of the protective plate. When the pressure mechanism drives the top plate to apply pressure to the protective plate, the hollow protective plate bends under force. At the same time as bending, the fourth motor drives the mating rod to rotate. The rotation angle of the mating rod is consistent with the bending degree of the hollow protective plate, thereby simulating the stress condition when the hollow protective plate of an automobile is installed on the automobile, and improving the accuracy of the detection. 3. The fifth motor drives the fixed plate to rotate. While rotating, the pressure sensor contacts the inner side of the protective plate through the top body at the end of the spring. Then, the detector at the end of the fixed plate detects the upper side of the hollow protective plate, thereby accurately detecting the bending degree of the hollow protective plate when it is under force, and thus calculating the pressure resistance performance of the hollow protective plate when it is installed on the car. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the entire invention. Figure 1 ; Figure 3 This is a cross-sectional view of the entire invention. Figure 2 ; Figure 4 This is a cross-sectional view of the entire invention. Figure 3 ; Figure 5 This is a partial cross-sectional view of the present invention; Figure 6 For the present invention Figure 2 Enlarged view of point A; Figure 7 For the present invention Figure 2 Enlarged view of point B; Figure 8 For the present invention Figure 3 Enlarged view of point C; Figure 9 For the present invention Figure 4 Enlarged view of point D.

[0017] 1. Main body plate; 2. Adjustable clamping mechanism; 3. Support mechanism; 4. Detection mechanism; 5. Pressing mechanism; 11. Support column; 12. First slot; 21. First motor; 22. First limiting slot; 23. First threaded rod; 24. First limiting body; 25. First placement slot; 26. First electric telescopic rod; 27. Fixing ring; 28. First extrusion plate; 29. ​​Second electric telescopic rod; 210. First extension plate; 211. Second extension plate; 212. Third electric telescopic rod; 213. Second extrusion plate; 31. Second motor; 32. Second limiting slot; 33. Second threaded rod; 34. Second limiting body; 35. First fixing body; 36. Third motor; 37. Third limiting slot; 38. Mating ring; 39. Second 310. Empty slot; 311. Fourth electric telescopic rod; 312. Top block; 313. Matching rod; 314. Second fixed body; 315. Third empty slot; 316. Third threaded rod; 317. Fourth limiting slot; 318. Through hole; 319. Fifth electric telescopic rod; 320. Rotating body; 321. Cavity; 322. Fourth motor; 323. Sixth electric telescopic rod; 41. Multi-stage electric telescopic rod; 42. Second placement slot; 43. Seventh electric telescopic rod; 44. Third fixed body; 45. Third placement slot; 46. Fifth motor; 47. Pressure sensor; 48. Spring; 49. Fixing plate; 410. Top body; 411. Detector; 51. Hydraulic telescopic rod; 52. Fourth fixed body; 53. Connecting body; 54. Top plate. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] Please see Figure 1 - Figure 9 A testing device based on the strength performance test of high-strength steel plate includes a main plate 1, a first slot 12 is provided at the upper end of the main plate 1, and an adjustable clamping mechanism 2 is provided at the upper end of the main plate 1.

[0020] In this embodiment, the adjustable clamping mechanism 2 includes two first limiting grooves 22 symmetrically opened on the upper end of the main body plate 1. The side of the main body plate 1 is symmetrically connected with a first motor 21. The transmission shaft ends of the two first motors 21 are respectively fixedly connected to a first threaded rod 23 in the first limiting groove 22. The main body plate 1 is slidably connected to two symmetrically arranged first limiting bodies 24 in the two first limiting grooves 22.

[0021] The two first limiting bodies 24 are respectively configured to engage with the first threaded rod 23 in different directions of rotation. The upper ends of the two first limiting bodies 24 are respectively provided with first placement grooves 25. The two first limiting bodies 24 are respectively fixedly connected to the first electric telescopic rods 26 in the first placement grooves 25. The telescopic ends of the two first electric telescopic rods 26 are respectively fixedly connected to the first extrusion plates 28. The upper ends of the two first limiting bodies 24 are fixedly connected to the fixing rings 27 that slide with the telescopic ends of the first electric telescopic rods 26.

[0022] The telescopic ends of the two first electric telescopic rods 26 are fixedly connected to a first extrusion plate 28. The sides of the two first extrusion plates 28 are respectively fixedly connected to a second electric telescopic rod 29. The telescopic ends of the two second electric telescopic rods 29 are fixedly connected to a first extension plate 210. The sides of the two fixed rings 27 are respectively fixedly connected to a second extrusion plate 213. The sides of the two second extrusion plates 213 are respectively fixedly connected to a third electric telescopic rod 212. The telescopic ends of the two third electric telescopic rods 212 are respectively fixedly connected to a second extension plate 211.

[0023] Specifically, the first motor 21 drives the first threaded rod 23 to rotate, and the first threaded rod 23 cooperates to move the first limiting body 24 to a position matching the end of the protective plate. Then, the first electric telescopic rod 26 retracts, and at the same time, the second electric telescopic rod 29 and the third electric telescopic rod 212 extend and retract synchronously. The second electric telescopic rod 29 and the third electric telescopic rod 212 respectively drive the first extension plate 210 and the second extension plate 211 to move to the side of the protective plate. The first electric telescopic rod 26 drives the first extrusion plate 28 to move downward, thereby clamping the protective plates of different widths and lengths.

[0024] In this embodiment, the upper end of the main body plate 1 is provided with a detection mechanism 4 for detecting the interior of the hollow high-strength plate.

[0025] The detection mechanism 4 includes a second placement groove 42 opened on the upper end of the main body plate 1. A seventh electric telescopic rod 43 is fixedly connected to the main body plate 1 in the second placement groove 42. A multi-stage electric telescopic rod 41 is fixedly connected to the telescopic end of the seventh electric telescopic rod 43. A third fixing body 44 is fixedly connected to the telescopic end of the multi-stage electric telescopic rod 41. A third placement groove 45 is opened at the upper end of the third fixing body 44.

[0026] A fifth motor 46 is fixedly connected to the side of the third fixing body 44. A fixing plate 49 is fixedly connected to the drive shaft end of the fifth motor 46 in the third placement groove 45. Guide grooves are respectively opened on the upper end of the third fixing body 44. Pressure sensors 47 are fixedly connected to the third fixing body 44 in the two guide grooves respectively. Springs 48 are fixedly connected to the ends of the two pressure sensors 47 respectively. Top bodies 410 are fixedly connected to the ends of the two springs 48 respectively. Detector 411 is fixedly connected to the end of the fixing plate 49.

[0027] Specifically, the fifth motor 46 drives the fixed plate 49 to rotate. While rotating, the pressure sensor 47 contacts the inner side of the protective plate through the top body 410 at the end of the spring 48. Then, the detector 411 at the end of the fixed plate 49 detects the upper side of the hollow protective plate, thereby accurately detecting the bending degree of the hollow protective plate when it is under force, and thus calculating the pressure resistance performance of the hollow protective plate when it is installed on the car.

[0028] In this embodiment, the main body plate 1 is provided with a support mechanism 3 in the first slot 12 to fit the side hole of the high-strength plate.

[0029] The support mechanism 3 includes a second limiting groove 32 opened at the lower end of the first slot 12. The main body plate 1 is slidably connected to a plurality of second limiting bodies 34 in the second limiting groove 32. The upper ends of the plurality of second limiting bodies 34 are respectively fixedly connected to a first fixing body 35. The upper ends of the plurality of first fixing bodies 35 are respectively opened with a fourth limiting groove 316. The first fixing bodies 35 are slidably connected to a plurality of sliding bodies in the fourth limiting groove 316. The upper ends of the plurality of sliding bodies are respectively fixedly connected to a fifth electric telescopic rod 318. The telescopic ends of the plurality of fifth electric telescopic rods 318 are respectively fixedly connected to a second fixing body 313. The side of the main body plate 1 is fixedly connected to a second motor 31. The drive shaft end of the second motor 31 is fixedly connected to a second threaded rod 33. The second threaded rod 33 and the second limiting body 34 are configured by threaded engagement.

[0030] Each of the second fixing bodies 313 has a third slot 314 at its upper end. A fourth motor 321 is fixedly connected to the side of each of the second fixing bodies 313. A cavity 320 is opened on the side of each of the second fixing bodies 313. A sixth electric telescopic rod 322 is fixedly connected to the drive shaft end of each of the fourth motors 321 in the cavity 320. A matching rod 312 is fixedly connected to the telescopic end of each of the sixth electric telescopic rods 322. A rotating body 319 is rotatably connected to the inner side of each of the second fixing bodies 313.

[0031] The first fixed body 35 is fixedly connected to the third motor 36 in the third limiting groove 37. The drive shaft end of the third motor 36 is fixedly connected to the third threaded rod 315. The sides of several sliding bodies are provided with through holes 317, and each of the several through holes 317 is provided with a mating ring 38.

[0032] The inner sides of several mating rings 38 are respectively threaded to the third threaded rod 315. The sides of several mating rings 38 are provided with four equally spaced second slots 39. The several mating rings 38 are respectively fixedly connected to the fourth electric telescopic rods 310 in the second slots 39. The telescopic ends of the several fourth electric telescopic rods 310 are respectively fixedly connected to the top blocks 311.

[0033] Specifically, the third motor 36 drives the third threaded rod 315 to rotate. At the same time, several fourth electric telescopic rods 310 on the sides of the mating rings 38 extend and retract through the controller. Through the mating of the third threaded rod 315 with the inner side of the mating rings 38, the sliding body moves sequentially to the position below the mounting hole on the side of the protective plate. Then, several fifth electric telescopic rods 318 extend, and the fifth electric telescopic rods 318 drive the second fixed body 313 to move upward. Then, the fourth motor 321 starts, and then the mating rod 312 corresponding to the mounting hole of the protective plate is placed in the second fixed body 313. Then, the sixth electric telescopic rod 322 extends and clamps the mating rod 312. The upper part of the mating rod 312 engages with the mounting hole of the protective plate.

[0034] The upper end of the main body plate 1 is provided with a pressure applying mechanism 5. The pressure applying mechanism 5 includes two hydraulic telescopic rods 51 symmetrically arranged on the upper end of the main body plate 1. The telescopic ends of the two hydraulic telescopic rods 51 are fixedly connected to a fourth fixing body 52. ​​The lower end of the fourth fixing body 52 is fixedly connected to a connecting body 53. The lower end of the connecting body 53 is fixedly connected to a top plate 54. The lower end of the main body plate 1 is symmetrically connected to a support column 11.

[0035] In use, the device is placed on a horizontal surface via four support columns 11. Then, the axial end of the high-strength hollow protective plate is placed between the first extrusion plate 28 and the second extrusion plate 213. The first motor 21 is then started, driving the first threaded rod 23 to rotate. The first threaded rod 23, in turn, moves the first limiting body 24 to a position matching the end of the protective plate. Then, the first electric telescopic rod 26 retracts. Simultaneously, the second electric telescopic rod 29 and the third electric telescopic rod 212 extend and retract synchronously. The second electric telescopic rod 29 and the third electric telescopic rod 212 respectively drive the first extension plate 210 and the second extension plate 211 to the side of the protective plate. The first electric telescopic rod 26 drives the first extrusion plate 28 to move downward, thereby clamping protective plates of different widths and lengths, improving the practicality of the device.

[0036] Then, the second motor 31 is started, driving the second threaded rod 33 to rotate. Since the mounting holes on the inner side of the protective plate are spaced evenly, the second threaded rod 33, in conjunction with the second threaded rod, drives several second limit bodies 34 to move sequentially to positions corresponding to the mounting holes on the protective plate. Then, the third motor 36 is started, driving the third threaded rod 315 to rotate. Simultaneously, several fourth electric telescopic rods 310 on the sides of the mating rings 38 extend and retract via a controller. Through the interaction between the third threaded rod 315 and the inner side of the mating rings 38, the sliding bodies move sequentially to positions below the mounting holes on the side of the protective plate. Then, several fifth electric telescopic rods 318 extend, and the fifth electric telescopic rods 318... The second fixed body 313 moves upward, then the fourth motor 321 starts, and then the mating rod 312 corresponding to the mounting hole of the protective plate is placed in the second fixed body 313. Then the sixth electric telescopic rod 322 extends and clamps the mating rod 312. The upper part of the mating rod 312 engages with the mounting hole of the protective plate. When the pressure applying mechanism 5 drives the top plate 54 to apply pressure to the protective plate, the hollow protective plate bends under force. At the same time as bending, the fourth motor 321 drives the mating rod 312 to rotate. The rotation angle of the mating rod 312 is consistent with the bending degree of the hollow protective plate, thereby simulating the stress condition when the hollow protective plate of an automobile is installed on the automobile, and improving the accuracy of the detection.

[0037] When the hollow protective plate is pressed, the seventh electric telescopic rod 43 extends. When the multi-stage electric telescopic rod 41 moves to the inside of the hollow protective plate, the multi-stage electric telescopic rod 41 extends and drives the third fixed body 44 to the inside of the hollow protective plate. Then the fifth motor 46 starts and drives the fixed plate 49 to rotate. At the same time, the pressure sensor 47 contacts the inner side of the protective plate through the top body 410 at the end of the spring 48. Then the detector 411 at the end of the fixed plate 49 detects the upper side of the hollow protective plate, thereby accurately detecting the bending degree of the hollow protective plate when it is under force, and thus calculating the pressure resistance performance of the hollow protective plate when it is installed on the car.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A testing device based on the strength performance test of high-strength steel plate, comprising a main plate (1), characterized in that: The upper end of the main plate (1) is provided with a first slot (12). The upper end of the main plate (1) is provided with an adjustable clamping mechanism (2). The adjustable clamping mechanism (2) includes two first limiting slots (22) symmetrically opened on the upper end of the main plate (1). The side of the main plate (1) is symmetrically connected with a first motor (21). The transmission shaft ends of the two first motors (21) are respectively fixedly connected with a first threaded rod (23) in the first limiting slot (22). The main plate (1) is slidably connected with two symmetrically arranged first limiting bodies (24) in the two first limiting slots (22). The upper end of the main plate (1) is provided with a detection mechanism (4) for detecting the inside of the hollow high-strength plate. The main plate (1) is provided with a support mechanism (3) for cooperating with the side holes of the high-strength plate in the first slot (12). The upper end of the main plate (1) is provided with a pressure applying mechanism (5).

2. The testing device based on the strength performance test of high-strength steel plate according to claim 1, characterized in that: The two first limiting bodies (24) are respectively configured to cooperate with the first threaded rod (23) in different directions. The upper ends of the two first limiting bodies (24) are respectively provided with first placement grooves (25). The two first limiting bodies (24) are respectively fixedly connected to the first electric telescopic rods (26) in the first placement grooves (25). The telescopic ends of the two first electric telescopic rods (26) are respectively fixedly connected to the first extrusion plates (28). The upper ends of the two first limiting bodies (24) are fixedly connected to the fixing rings (27) that slide with the telescopic ends of the first electric telescopic rods (26).

3. The testing device based on the strength performance test of high-strength steel plate according to claim 2, characterized in that: The telescopic ends of the two first electric telescopic rods (26) are fixedly connected to a first extrusion plate (28), the sides of the two first extrusion plates (28) are respectively fixedly connected to a second electric telescopic rod (29), the telescopic ends of the two second electric telescopic rods (29) are fixedly connected to a first extension plate (210), the sides of the two fixed rings (27) are respectively fixedly connected to a second extrusion plate (213), the sides of the two second extrusion plates (213) are respectively fixedly connected to a third electric telescopic rod (212), and the telescopic ends of the two third electric telescopic rods (212) are respectively fixedly connected to a second extension plate (211).

4. The testing device based on the strength performance test of high-strength steel plate according to claim 1, characterized in that: The support mechanism (3) includes a second limiting groove (32) opened at the lower end of the first empty groove (12). The main body plate (1) is slidably connected with a plurality of second limiting bodies (34) in the second limiting groove (32). The upper ends of the plurality of second limiting bodies (34) are respectively fixedly connected with first fixing bodies (35). The upper ends of the plurality of first fixing bodies (35) are respectively provided with fourth limiting grooves (316). The first fixing bodies (35) are slidably connected with a plurality of sliding bodies in the fourth limiting grooves (316). The upper ends of the plurality of sliding bodies are respectively fixedly connected with fifth electric telescopic rods (318). The telescopic ends of the plurality of fifth electric telescopic rods (318) are respectively fixedly connected with second fixing bodies (313). The side of the main body plate (1) is fixedly connected with a second motor (31). The transmission shaft end of the second motor (31) is fixedly connected with a second threaded rod (33). The second threaded rod (33) and the second limiting body (34) are set by threaded engagement.

5. The testing device based on the strength performance test of high-strength steel plate according to claim 4, characterized in that: A third slot (314) is provided at the upper end of a plurality of second fixing bodies (313). A fourth motor (321) is fixedly connected to the side of a plurality of second fixing bodies (313). A cavity (320) is provided on the side of a plurality of second fixing bodies (313). A sixth electric telescopic rod (322) is fixedly connected to the drive shaft end of a plurality of fourth motors (321) in the cavity (320). A matching rod (312) is fixedly connected to the telescopic end of a plurality of sixth electric telescopic rods (322). A rotating body (319) is rotatably connected to the inner side of a plurality of second fixing bodies (313).

6. The testing device based on the strength performance test of high-strength steel plate according to claim 5, characterized in that: The first fixed body (35) is fixedly connected to the third motor (36) in the third limiting groove (37). The transmission shaft end of the third motor (36) is fixedly connected to the third threaded rod (315). Several sliding bodies have through holes (317) through them on their sides. Several through holes (317) are respectively provided with mating rings (38).

7. The testing device based on the strength performance test of high-strength steel plate according to claim 6, characterized in that: The inner sides of several mating rings (38) are respectively threaded to the third threaded rod (315). The sides of several mating rings (38) are provided with four equally spaced second slots (39). The several mating rings (38) are respectively fixedly connected to the fourth electric telescopic rods (310) in the second slots (39). The telescopic ends of the several fourth electric telescopic rods (310) are respectively fixedly connected to the top blocks (311).

8. The testing device based on the strength performance test of high-strength steel plate according to claim 1, characterized in that: The testing mechanism (4) includes a second placement slot (42) opened on the upper end of the main body plate (1). A seventh electric telescopic rod (43) is fixedly connected in the second placement slot (42) of the main body plate (1). A multi-stage electric telescopic rod (41) is fixedly connected to the telescopic end of the seventh electric telescopic rod (43). A third fixing body (44) is fixedly connected to the telescopic end of the multi-stage electric telescopic rod (41). A third placement slot (45) is opened at the upper end of the third fixing body (44).

9. The testing device based on the strength performance test of high-strength steel plate according to claim 8, characterized in that: The fifth motor (46) is fixedly connected to the side of the third fixing body (44). The drive shaft end of the fifth motor (46) is fixedly connected to a fixing plate (49) in the third placement groove (45). The upper end of the third fixing body (44) is provided with guide grooves. Pressure sensors (47) are fixedly connected to the two guide grooves of the third fixing body (44). Springs (48) are fixedly connected to the ends of the two pressure sensors (47). Top bodies (410) are fixedly connected to the ends of the two springs (48). Detectors (411) are fixedly connected to the ends of the fixing plate (49).

10. The testing device based on the strength performance test of high-strength steel plate according to claim 1, characterized in that: The pressure application mechanism (5) includes two hydraulic telescopic rods (51) symmetrically arranged on the upper end of the main body plate (1). The telescopic ends of the two hydraulic telescopic rods (51) are fixedly connected to a fourth fixing body (52). The lower end of the fourth fixing body (52) is fixedly connected to a connecting body (53). The lower end of the connecting body (53) is fixedly connected to a top plate (54). The lower end of the main body plate (1) is symmetrically connected to a support column (11).

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