Tensile fatigue test equipment

Abstract

The utility model belongs to the technical field of tensile fatigue testing, and particularly relates to tensile fatigue testing equipment which comprises a frame body, a testing table, a first tensile seat, a second tensile seat and a driving assembly, the testing table is connected with the frame body, the first tensile seat and the second tensile seat are both connected with the testing table, and the driving assembly is connected with the first tensile seat and the second tensile seat. The first stretching seat is provided with a first locking structure, the first locking structure is used for locking one end of a headband on the first stretching seat, the second stretching seat is provided with a second locking structure, the second locking structure is used for locking the other end of the headband on the second stretching seat, and the driving assembly is connected with the test board. The driving assembly can drive the first stretching base to move in the direction close to or away from the second stretching base. The driving assembly can accurately adjust the distance between the first stretching seat and the second stretching seat according to design requirements, the stretching distance of each time can be accurately controlled, and the accuracy of the measured stretching frequency limit is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tensile fatigue testing, and particularly relates to a tensile fatigue testing device. Background Art

[0002] The head-mounted display device sends optical signals to the eyes through various headsets, and can achieve different effects such as virtual reality (VR), augmented reality (AR), and mixed reality (MR). At present, the head-mounted display device includes a housing, a headband, and an audio-visual component. The audio-visual component is installed in the housing and is used to project images and play sounds. The headband is installed on the side of the housing facing away from humans for people to wear.

[0003] The headband of the head-mounted display device has a tensile fatigue limit. When the number of stretches reaches the limit, the elasticity of the headband will decrease or even cause the headband to break. Therefore, it is necessary to design a tensile fatigue testing device to test the headband during the production process, so as to test the limit of the number of stretches of the headband.

[0004] An existing testing device includes a test bench and a mounting seat. The mounting seat is connected to the test bench. During testing, one end of the headband is fixed on the mounting seat, and the headband is manually stretched back and forth. When the headband loses elasticity or breaks, the number of pulls is recorded, so as to measure the limit of the number of stretches of the headband.

[0005] However, for the existing testing device, when the headband is pulled by hand, the distance of each stretch cannot be accurately controlled. Therefore, the obtained limit of the number of stretches is inaccurate. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is: aiming at the problem that the existing testing device cannot accurately control the distance of each stretch, a tensile fatigue testing device is provided.

[0007] To solve the above technical problem, an embodiment of the utility model provides a tensile fatigue testing device, which includes a frame body, a test bench, a first stretching seat, a second stretching seat, and a driving component. The test bench is connected to the frame body. The first stretching seat and the second stretching seat are both connected to the test bench. A first locking structure is provided on the first stretching seat, and the first locking structure is used to lock one end of the headband on the first stretching seat. A second locking structure is provided on the second stretching seat, and the second locking structure is used to lock the other end of the headband on the second stretching seat. The driving component is connected to the test bench, and the driving component can drive the first stretching seat to move in a direction close to or away from the second stretching seat.

[0008] Optionally, the driving assembly includes a motor, a slide rail, and a first lead screw. The slide rail is disposed on the test bench. The first stretching seat is assembled on the slide rail. The motor is connected to the test bench. The first lead screw is rotationally assembled with the test bench. The first lead screw is in transmission connection with the motor. The first lead screw is in screw assembly with the first stretching seat. The motor can drive the first lead screw to rotate, so that the first stretching seat moves along the slide rail in a direction approaching or away from the second stretching seat.

[0009] Optionally, the driving assembly further includes a belt, a first synchronous pulley, and a second synchronous pulley. The first synchronous pulley is connected to the output shaft of the motor. The second synchronous pulley is connected to the first lead screw. The belt is wound around the first synchronous pulley and the second synchronous pulley.

[0010] Optionally, the driving assembly further includes a coupling and a second lead screw. The second lead screw is connected to the first lead screw through the coupling. The second lead screw is rotationally assembled with the test bench. The second stretching seat is assembled on the slide rail. The second stretching seat is in screw assembly with the second lead screw. The thread direction of the second lead screw is opposite to that of the first lead screw.

[0011] Optionally, the first locking structure includes a first base, a first clamping plate, a first buckle, and a first driving member. The first clamping plate is rotationally assembled on the first base;

[0012] The first base is provided with a first clamping hole. The first buckle includes a first connecting portion, a first wrench portion, a first driving portion, and a first hook portion. The first connecting portion is connected between the first wrench portion and the first hook portion. The first connecting portion is rotationally assembled with the first clamping plate. The first driving portion is connected to the first connecting portion. The first driving member is connected between the first clamping plate and the first driving portion. The first driving member can drive the first driving portion to rotate away from the first clamping plate, so that the first hook portion is clamped with the first clamping hole.

[0013] Optionally, the first driving member is a first spring. A first installation groove is provided on a side of the first clamping plate facing away from the first base. One end of the first spring is connected to the bottom wall of the first installation groove, and the other end is connected to the first driving portion. The first spring can drive the first driving portion away from the bottom wall of the first installation groove by its elastic force.

[0014] Optionally, the second locking structure includes a second base, a second clamping plate, a second buckle, and a second driving member. The second clamping plate is rotationally assembled on the second base;

[0015] The second base is provided with a second card hole. The second buckle includes a second connecting portion, a second wrench portion, a second driving portion, and a second engaging hook portion. The second connecting portion is connected between the second wrench portion and the second engaging hook portion. The second connecting portion is rotatably assembled with the second clamping plate. The second driving portion is connected to the second connecting portion. The second driving member is connected between the second clamping plate and the second driving portion. The second driving member can drive the second driving portion to rotate in a direction away from the second clamping plate, so that the second engaging hook portion is engaged with the second card hole.

[0016] Optionally, it further includes bottom rollers. The frame is provided with a first track. The first track is parallel to the slide rail. The first track is located below the test bench. The bottom rollers are installed in the first track. The bottom rollers can roll in the first track. The bottom rollers are in rolling contact with the bottom surface of the test bench.

[0017] Optionally, it further includes side rollers. The frame is provided with a second track. The second track is parallel to the slide rail. The second track is located on one side of the width of the test bench. The side rollers are installed in the second track. The side rollers can roll in the second track. The side rollers are in rolling contact with the side surface of the test bench.

[0018] Optionally, it further includes a first stop structure and a second stop structure. The first stop structure is connected to the frame. The first stop structure stops one side of the test bench in the length direction. The second stop structure is connected to the frame. The second stop structure is located on the other side of the test bench in the length direction. The second stop structure has an open state and a closed state. When the second stop structure is in the closed state, it blocks the test bench.

[0019] According to the tensile fatigue test equipment of the embodiment of the present invention, the driving assembly drives the first tensile seat to approach and move away from the second tensile seat, so as to adjust the interval between the first tensile seat and the second tensile seat, and then stretch the headband locked on the first tensile seat and the second tensile seat. Compared with the prior art, the driving assembly can accurately adjust the distance between the first tensile seat and the second tensile seat according to the design requirements, so as to control the stretching degree of the headband, accurately control the distance of each stretch, and improve the accuracy of the measured limit of the number of stretches. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a tensile fatigue test equipment provided by an embodiment of the present invention;

[0021] Figure 2 is Figure 1 a partial structural diagram of

[0022] Figure 3 is Figure 2 a partial structural schematic diagram of

[0023] Figure 4 is Figure 3 a partial structural schematic diagram of

[0024] Figure 5 is a structural schematic diagram of the first locking structure;

[0025] Figure 6 is Figure 5 a decomposition schematic diagram of

[0026] Figure 7 is a decomposition schematic diagram of the second locking structure;

[0027] Figure 8 is a structural schematic diagram of the headband.

[0028] The reference numerals in the specification are as follows: 1, frame body; 2, bellows; 3, test bench; 4, stopper; 5, first stop structure; 6, second stop structure; 7, second baffle; 8, support column; 9, mating groove; 10, rotating column; 11, turntable; 12, headband; 13, first stretching seat; 14, first locking structure; 15, driving assembly; 16, second stretching seat; 17, second locking structure; 18, support platform; 19, motor; 20, first synchronous pulley; 21, second synchronous pulley; 22, belt; 23, first lead screw; 24, coupling; 25, second lead screw; 26, first clamping plate; 27, first base; 28, first positioning post; 29, first buckle; 30, first spring; 31, first wrench part; 32, first driving part; 33, first connecting part; 34, first hook part; 35, first rotating shaft; 36, second rotating shaft; 37, first torsion spring; 38, second spring; 39, first card hole; 40, first installation groove; 41, first jack; 42, second buckle; 43, second wrench part; 44, second driving part; 45, second connecting part; 46, second hook part; 47, second clamping plate; 48, second installation groove; 49, second jack; 50, third rotating shaft; 51, second base; 52, second positioning post; 53, second card hole; 54, fourth rotating shaft; 55, second torsion spring; 56, positioning hole; 57, first track; 58, bottom roller; 59, second track; 60, side roller; 61, slide rail. Detailed implementation manners

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] As shown in Figures 1 to 8 FIG. 0, an embodiment of the present utility model provides a tensile fatigue test device, including a frame body 1, a test bench 3, a first stretching seat 13, a second stretching seat 16 and a driving assembly 15. The test bench 3 is connected to the frame body 1. Both the first stretching seat 13 and the second stretching seat 16 are connected to the test bench 3. A first locking structure 14 is provided on the first stretching seat 13, and the first locking structure 14 is used to lock one end of the headband 12 on the first stretching seat 13. A second locking structure 17 is provided on the second stretching seat 16, and the second locking structure 17 is used to lock the other end of the headband 12 on the second stretching seat 16. The driving assembly 15 is connected to the test bench 3, and the driving assembly 15 can drive the first stretching seat 13 to move in a direction approaching or departing from the second stretching seat 16.

[0031] In one embodiment, the driving assembly 15 includes a motor 19, a slide rail 61 and a first lead screw 23. The slide rail 61 is arranged on the test bench 3. The first stretching seat 13 is assembled on the slide rail 61. The motor 19 is connected to the test bench 3. The first lead screw 23 is rotationally assembled with the test bench 3. The first lead screw 23 is in transmission connection with the motor 19. The first lead screw 23 is in screw assembly with the first stretching seat 13. The motor 19 can drive the first lead screw 23 to rotate, so that the first stretching seat 13 moves along the slide rail 61 in a direction approaching or departing from the second stretching seat 16.

[0032] The first lead screw 23 is erected on the test bench 3. The first stretching seat 13 is in screw assembly with the first lead screw 23. There are two slide rails 61, and the two slide rails 61 are arranged at intervals and are respectively arranged on both sides of the test bench 3. The first stretching seat 13 is assembled on the two slide rails 61. The motor 19 drives the first lead screw 23 to rotate. Under the limitation of the slide rail 61, the rotation of the first lead screw 23 is converted into the horizontal movement of the first stretching seat 13, so as to control the first stretching seat 13 to approach and depart from the second stretching seat 16. The structure is simple, and the nut-screw mechanism can more accurately control the moving distance of the first stretching seat 13.

[0033] In one embodiment, the driving assembly 15 further includes a belt 22, a first synchronous pulley 20 and a second synchronous pulley 21. The first synchronous pulley 20 is connected to the output shaft of the motor 19. The second synchronous pulley 21 is connected to the first lead screw 23. The belt 22 is wound around the first synchronous pulley 20 and the second synchronous pulley 21. The rotation of the first lead screw 23 can be driven more stably by the transmission mode of the synchronous pulley and the belt 22.

[0034] In one embodiment, the driving assembly 15 further includes a coupling 24 and a second lead screw 25. The second lead screw 25 is connected to the first lead screw 23 through the coupling 24. The second lead screw 25 is rotationally assembled with the test bench 3. The second stretching seat 16 is assembled on the slide rail 61. The second stretching seat 16 is helically assembled with the second lead screw 25. The thread of the second lead screw 25 has a reverse helix direction compared with the thread of the first lead screw 23.

[0035] The second stretching seat 16 is assembled on the slide rail 61. One end of the second lead screw 25 close to the first lead screw 23 is connected to the first lead screw 23 through the coupling 24. The thread of the second lead screw 25 has a reverse helix direction compared with the thread of the first lead screw 23. The second stretching seat 16 is helically assembled with the second lead screw 25. When the first lead screw 23 rotates, it drives the second lead screw 25 to rotate. When the second lead screw 25 rotates, under the limitation of the slide rail 61, the rotation of the second lead screw 25 is converted into the horizontal movement of the second stretching seat 16. Since the thread of the second lead screw 25 has a reverse helix direction compared with the thread of the first lead screw 23, the moving direction of the second stretching seat 16 is opposite to that of the first stretching seat 13, so that the first stretching seat 13 and the second stretching seat 16 approach or move away from each other. By simultaneously driving the first stretching seat 13 and the second stretching seat 16 to rotate with the first motor 19, the production cost is reduced.

[0036] In one embodiment, the tensile fatigue test device further includes a support table 18. The support table 18 is connected to the frame body 1. The placement table is arranged between the first stretching seat 13 and the second stretching seat 16. The support table 18 is used to support the middle position of the headband 12 to prevent the headband 12 from sagging.

[0037] In one embodiment, the first locking structure 14 includes a first base 27, a first clamping plate 26, a first buckle 29 and a first driving member. The first clamping plate 26 is rotationally assembled on the first base 27 through a second rotating shaft 36.

[0038] The first base 27 is provided with a first card hole 39. The first buckle 29 includes a first connecting portion 33, a first wrench portion 31, a first driving portion 32 and a first hook portion 34. The first connecting portion 33 is connected between the first wrench portion 31 and the first hook portion 34. The first connecting portion 33 is rotationally assembled with the first clamping plate 26 through a first rotating shaft 35. The first driving portion 32 is connected to the first connecting portion 33. The first driving member is connected between the first clamping plate 26 and the first driving portion 32. The first driving member can drive the first driving portion 32 to rotate in a direction away from the first clamping plate 26, so that the first hook portion 34 is clamped with the first card hole 39.

[0039] The first driving member is a first spring 30, and a first mounting groove 40 is provided on the side of the first clamping plate 26 facing away from the first base 27. One end of the first spring 30 is connected to the bottom wall of the first mounting groove 40, and the other end is connected to the first driving part 32. The first spring 30 can drive the first driving part 32 away from the bottom wall of the first mounting groove 40 by relying on elastic force.

[0040] The first base 27 is also provided with a first positioning column 28. When installing the headband 12, the first positioning column 28 is first inserted into the positioning hole 56 at one end of the headband 12, and then the first clamping plate 26 is pressed onto the first base 27, so that the first positioning column 28 is inserted into the first insertion hole 41 of the second clamping plate 47, and then the first wrench part 31 is pulled so that the first hook part 34 is engaged with the first clamping hole 39 on the first base 27. Under the elastic force of the first spring 30, the first spring 30 drives the first driving part 32 to rotate in the direction away from the first clamping plate 26, so as to exert an action on the first hook part 34 through the first connecting part 33 to prevent the first hook part 34 from falling out of the first clamping hole 39. When the headband 12 needs to be removed, the first wrench part 31 is manually pulled in the opposite direction so that the first wrench part 31 rotates toward the first clamping plate 26 to disengage the first hook part 34 from the first clamping hole 39.

[0041] In this embodiment, a first torsion spring 37 is further provided between the first clamping plate 26 and the first base 27. When the headband 12 is disassembled, the first torsion spring 37 can bounce the first clamping plate 26 to move the first clamping plate 26 away from the first base 27 to assist in disassembly.

[0042] In one embodiment, the second locking structure 17 includes a second base 51 , a second clamping plate 47 , a second buckle 42 and a second driving member. The second clamping plate 47 is rotatably assembled on the second base 51 via a fourth rotating shaft 54 .

[0043] A second clamping hole 53 is provided on the second base 51, and the second buckle 42 includes a second connecting portion 45, a second wrench portion 43, a second driving portion 44 and a second hook portion 46. The second connecting portion 45 is connected between the second wrench portion 43 and the second hook portion 46, and the second connecting portion 45 is rotatably assembled with the second clamping plate 47 through a third rotating shaft 50. The second driving portion 44 is connected to the second connecting portion 45, and the second driving member is connected between the second clamping plate 47 and the second driving portion 44. The second driving member can drive the second driving portion 44 to rotate in a direction away from the second clamping plate 47 so that the second hook portion 46 is clamped with the second clamping hole 53.

[0044] The second driving member is a second spring 38, and a second mounting groove 48 is provided on the side of the second clamping plate 47 facing away from the second base 51. One end of the second spring 38 is connected to the bottom wall of the second mounting groove 48, and the other end is connected to the second driving part 44. The second spring 38 can drive the second driving part 44 away from the bottom wall of the second mounting groove 48 by relying on elastic force.

[0045] The second base 51 is also provided with a second positioning column 52. When installing the headband 12, the second positioning column 52 is first inserted into the positioning hole 56 at the other end of the headband 12, and then the second clamping plate 47 is pressed onto the second base 51, so that the second positioning column 52 is inserted into the second insertion hole 49 of the second clamping plate 47, and then the second wrench part 43 is pulled to make the second hook part 46 engage with the second clamping hole 53 on the second base 51. Under the elastic force of the second spring 38, the second spring 38 drives the second driving part 44 to rotate in the direction away from the second clamping plate 47, so as to exert an action on the second hook part 46 through the second connecting part 45 to prevent the second hook part 46 from falling out of the second clamping hole 53. When the headband 12 needs to be removed, the second wrench part 43 is manually pulled in the opposite direction to make the second wrench part 43 rotate toward the second clamping plate 47 to make the second hook part 46 disengage from the second clamping hole 53.

[0046] In this embodiment, a second torsion spring 55 is further provided between the second clamping plate 47 and the second base 51. When the headband 12 is disassembled, the second torsion spring 55 can bounce up the second clamping plate 47 to move the second clamping plate 47 away from the second base 51, thereby assisting disassembly.

[0047] In one embodiment, the tensile fatigue testing device further includes a bottom roller 58, a first track 57 is provided on the frame 1, the first track 57 is parallel to the slide rail 61, the first track 57 is located below the test bench 3, the bottom roller 58 is installed in the first track 57, the bottom roller 58 can roll in the first track 57, and the bottom roller 58 is in rolling contact with the bottom surface of the test bench 3. The provision of the bottom roller 58 facilitates the removal of the test bench 3 from the frame 1, saving time and effort, and multiple layers of test benches 3 can be provided on the frame 1 at the same time to test multiple layers of headbands 12 at the same time.

[0048] In one embodiment, the tensile fatigue testing device further includes side rollers 60. A second track 59 is provided on the frame 1. The second track 59 is parallel to the slide rail 61. The second track 59 is located on one side of the width of the test bench 3. The side rollers 60 are installed in the second track 59. The side rollers 60 can roll within the second track 59. The side rollers 60 are in rolling contact with the side surface of the test bench 3. The side rollers 60 can reduce the friction between the side surface of the test bench 3 and the frame 1, facilitating the pulling out of the test bench 3.

[0049] In one embodiment, the tensile fatigue testing device further includes a first stop structure 5 and a second stop structure 6. The first stop structure 5 is connected to the frame 1. The first stop structure 5 stops one side of the test bench 3 in the length direction. The second stop structure 6 is connected to the frame 1. The second stop structure 6 is located on the other side of the test bench 3 in the length direction. The second stop structure 6 has an open state and a closed state. When the second stop structure 6 is in the closed state, it blocks the test bench 3.

[0050] The first stop structure 5 is a stop block 4. The stop block 4 is fixedly installed on the frame 1. The stop block 4 is arranged on the side of the first stretching seat 13 facing away from the second stretching seat 16, for stopping one side of the test bench 3 in the length direction.

[0051] The second stop structure 6 includes a support column 8, a second baffle 7 and a turntable 11. The second baffle 7 is rotatably assembled on the frame 1. The support column 8 is connected to the frame 1. The support column 8 is arranged below the second baffle 7. A mating groove 9 is provided on the lower side surface of the second baffle 7. The turntable 11 is connected to the second baffle 7. By rotating the turntable 11 to drive the second baffle 7 to rotate, the second baffle 7 is placed on the support column 8. A rotating column 10 is also provided on the second baffle 7, facilitating the pulling of the second baffle 7.

[0052] In one embodiment, an accordion cover 2 is provided on the test bench 3 to protect the test bench 3 and prevent sundries from entering the test bench 3.

[0053] The working principle of the tensile fatigue testing device according to the embodiment of the present utility model is as follows:

[0054] When testing the headband 12, first install the two ends of the headband 12 on the first stretching seat 13 and the second stretching seat 16 respectively. Then, the driving component 15 drives the first lead screw 23 and the second lead screw 25 to rotate, so that the first stretching seat 13 and the second stretching seat 16 move away from each other to a certain distance and maintain for a certain time. Then, the driving component 15 drives the first stretching seat 13 and the second stretching seat 16 to approach each other, to reciprocally stretch the headband 12.

[0055] According to the tensile fatigue test device of the embodiment of the present utility model, the driving assembly 15 drives the first stretching seat 13 to approach and move away from the second stretching seat 16, so as to adjust the interval between the first stretching seat 13 and the second stretching seat 16, and further stretch the headband 12 locked on the first stretching seat 13 and the second stretching seat 16. Compared with the prior art, the driving assembly 15 can accurately adjust the distance between the first stretching seat 13 and the second stretching seat 16 according to the design requirements, so as to control the stretching degree of the headband 12, accurately control the distance of each stretching, and improve the accuracy of the measured limit of the number of stretching times.

[0056] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A tensile fatigue test device, characterized in that, It includes a frame body (1), a test bench (3), a first stretching seat (13), a second stretching seat (16) and a driving component (15). The test bench (3) is connected to the frame body (1). Both the first stretching seat (13) and the second stretching seat (16) are connected to the test bench (3). A first locking structure (14) is provided on the first stretching seat (13), and the first locking structure (14) is used to lock one end of the headband (12) on the first stretching seat (13). A second locking structure (17) is provided on the second stretching seat (16), and the second locking structure (17) is used to lock the other end of the headband (12) on the second stretching seat (16). The driving component (15) is connected to the test bench (3), and the driving component (15) can drive the first stretching seat (13) to move in a direction close to or away from the second stretching seat (16).

2. The tensile fatigue testing device according to claim 1, wherein, The driving component (15) includes a motor (19), a slide rail (61) and a first lead screw (23). The slide rail (61) is arranged on the test bench (3). The first stretching seat (13) is assembled on the slide rail (61). The motor (19) is connected to the test bench (3). The first lead screw (23) is rotatably assembled with the test bench (3). The first lead screw (23) is in transmission connection with the motor (19). The first lead screw (23) is in screw assembly with the first stretching seat (13). The motor (19) can drive the first lead screw (23) to rotate so that the first stretching seat (13) moves along the slide rail (61) in a direction close to or away from the second stretching seat (16).

3. The tensile fatigue test device according to claim 2, characterized in that, The driving component (15) further includes a belt (22), a first synchronous pulley (20) and a second synchronous pulley (21). The first synchronous pulley (20) is connected to the output shaft of the motor (19). The second synchronous pulley (21) is connected to the first lead screw (23). The belt (22) is wound around the first synchronous pulley (20) and the second synchronous pulley (21).

4. The tensile fatigue test device according to claim 3, characterized in that, The driving component (15) further includes a coupling (24) and a second lead screw (25). The second lead screw (25) is connected to the first lead screw (23) through the coupling (24). The second lead screw (25) is rotatably assembled with the test bench (3). The second stretching seat (16) is assembled on the slide rail (61). The second stretching seat (16) is in screw assembly with the second lead screw (25). The thread direction of the second lead screw (25) is opposite to that of the first lead screw (23).

5. The tensile fatigue testing device according to any one of claims 1 to 4, characterized in that, The first locking structure (14) includes a first base (27), a first clamping plate (26), a first buckle (29) and a first driving member. The first clamping plate (26) is rotatably assembled on the first base (27). The first base (27) is provided with a first clamping hole (39). The first clamping buckle (29) includes a first connecting portion (33), a first wrench portion (31), a first driving portion (32) and a first hook portion (34). The first connecting portion (33) is connected between the first wrench portion (31) and the first hook portion (34). The first connecting portion (33) is rotationally assembled with the first clamping plate (26). The first driving portion (32) is connected to the first connecting portion (33). The first driving member is connected between the first clamping plate (26) and the first driving portion (32). The first driving member can drive the first driving portion (32) to rotate away from the first clamping plate (26) so that the first hook portion (34) is clamped with the first clamping hole (39).

6. The tensile fatigue test device according to claim 5, characterized in that, The first driving member is a first spring (30). A first installation groove (40) is provided on a side of the first clamping plate (26) facing away from the first base (27). One end of the first spring (30) is connected to the bottom wall of the groove of the first installation groove (40), and the other end is connected to the first driving portion (32). The first spring (30) can drive the first driving portion (32) away from the bottom wall of the first installation groove (40) by relying on its elastic force.

7. The tensile fatigue test device according to any one of claims 1 to 4, characterized in that, The second locking structure (17) includes a second base (51), a second clamping plate (47), a second clamping buckle (42) and a second driving member. The second clamping plate (47) is rotationally assembled on the second base (51). The second base (51) is provided with a second clamping hole (53). The second clamping buckle (42) includes a second connecting portion (45), a second wrench portion (43), a second driving portion (44) and a second hook portion (46). The second connecting portion (45) is connected between the second wrench portion (43) and the second hook portion (46). The second connecting portion (45) is rotationally assembled with the second clamping plate (47). The second driving portion (44) is connected to the second connecting portion (45). The second driving member is connected between the second clamping plate (47) and the second driving portion (44). The second driving member can drive the second driving portion (44) to rotate away from the second clamping plate (47) so that the second hook portion (46) is clamped with the second clamping hole (53).

8. The tensile fatigue test device according to any one of claims 2 to 4, characterized in that It further includes bottom rollers (58). A first track (57) is provided on the frame body (1). The first track (57) is parallel to the slide rail (61). The first track (57) is located below the test bench (3). The bottom rollers (58) are installed in the first track (57). The bottom rollers (58) can roll in the first track (57). The bottom rollers (58) are in rolling contact with the bottom surface of the test bench (3).

9. The tensile fatigue testing device according to claim 8, wherein, It further includes side rollers (60). A second track (59) is provided on the frame body (1). The second track (59) is parallel to the slide rail (61). The second track (59) is located on one side of the width of the test bench (3). The side rollers (60) are installed in the second track (59). The side rollers (60) can roll within the second track (59), and the side rollers (60) are in rolling contact with the side surface of the test bench (3).

10. The tensile fatigue testing device according to claim 9, characterized in that, It further includes a first stop structure (5) and a second stop structure (6). The first stop structure (5) is connected to the frame body (1). The first stop structure (5) stops against one side in the length direction of the test bench (3). The second stop structure (6) is connected to the frame body (1). The second stop structure (6) is located on the other side in the length direction of the test bench (3). The second stop structure (6) has an open state and a closed state. When the second stop structure (6) is in the closed state, it blocks the test bench (3).

Images