Hydrogen embrittlement testing device for fastener

Abstract

The invention relates to the technical field of testing devices, and discloses a fastener hydrogen embrittlement testing device which comprises a testing box, a plywood is arranged on the inner wall of the testing box, a clamping groove is formed in the plywood, a placing plate is fixedly connected to the outer wall of the plywood, a fastener body is arranged in the placing plate, and a clamping groove is formed in the clamping groove. Supporting frames are fixedly connected to the inner walls of the two sides of the test box, the outer walls of the placement plates are slidably connected to the inner walls of the supporting frames, second springs are fixedly connected to the inner walls of the supporting frames, the outer walls of the placement plates are arranged on the outer walls of the second springs, and a moving plate is slidably connected to the inner wall of the test box. A movable plate is pulled to move upwards to drive an inclined block to be separated from a clamping groove, a placing plate is pushed out through a second spring, so that the fastener is rapidly replaced, the placing plate is pushed back to the inner wall of a supporting frame, a first spring rebounds, the inclined block is pushed back to the clamping groove, and meanwhile the stability of the placing plate is guaranteed through the second spring; therefore, the stability and the testing efficiency of the fastener during testing are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of testing devices, in particular to a fastener hydrogen embrittlement testing device. Background Art

[0002] In modern industrial production, fasteners are key components for connecting various parts. Their quality and performance are directly related to the safety and reliability of the entire system. However, hydrogen embrittlement has a significant impact on the mechanical properties of fasteners, which may cause brittle fracture during use and cause serious safety accidents. Therefore, it is necessary to perform hydrogen embrittlement testing on fasteners. The hydrogen embrittlement sensitivity coefficient obtained by the hydrogen embrittlement test is used to judge the hydrogen embrittlement sensitivity of the material. The traditional fastener hydrogen embrittlement testing device requires manual positioning of the fasteners on the placement plate to the test position.

[0003] However, with current technology, it is difficult to quickly install the placement plate for positioning fasteners, which increases test preparation and operation time, lengthens the overall test process, and affects the stability and efficiency of the test. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a fastener hydrogen embrittlement testing device to solve the problem that it is difficult to quickly install a placement plate for positioning fasteners, which affects the stability and efficiency of the test.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fastener hydrogen embrittlement testing device, comprising a test box, the inner wall of the test box is provided with a joint plate, a card slot is opened inside the joint plate, the outer wall of the joint plate is fixedly connected to a placement plate, a fastener body is arranged inside the placement plate, the inner walls on both sides of the test box are fixedly connected to a support frame, the outer wall of the placement plate is slidably connected to the inner wall of the support frame, the inner wall of the support frame is fixedly connected to a second spring, the outer wall of the placement plate is arranged on the outer wall of the second spring, the inner wall of the test box is slidably connected to a moving plate, the upper surface of the moving plate is fixedly connected to a first spring, the lower surface of the moving plate is fixedly connected to a moving column, the bottom end of the moving column is fixedly connected to an inclined block, the outer wall of the inclined block is slidably connected to the inner wall of the test box, the outer wall of the inclined block is arranged on the inner wall of the card slot, and a ventilation component is arranged inside the test box, and the ventilation component is used to adjust the test gas environment.

[0006] Preferably, the ventilation assembly includes an air intake duct, the outer wall of the air intake duct is arranged inside the test box, a displacement duct is arranged inside the test box, an exhaust duct is arranged inside the test box, and the air intake duct, the displacement duct and the exhaust duct are all provided with valves.

[0007] Preferably, an upper cover is fixedly connected to the upper surface of the test box, an outer wall of the upper cover is fixedly connected to a motor, an output end of the motor is fixedly connected to a connecting rod, and an outer wall of the connecting rod is rotatably connected to the inside of the upper cover.

[0008] Preferably, the outer wall of the connecting rod is fixedly connected to a first bevel gear, the outer wall of the first bevel gear is meshingly connected to a second bevel gear, the interior of the second bevel gear is fixedly connected to a screw rod, and the outer wall of the screw rod is rotatably connected to the interior of the upper cover.

[0009] Preferably, the outer walls on both sides of the test box are fixedly connected with transverse plates, and the bottom end of the screw rod is rotatably connected to the upper surface of the transverse plate.

[0010] Preferably, the outer wall of the screw rod is threadedly connected with a guide block, the outer wall of the guide block is fixedly connected with a sealing baffle, and the outer wall of the sealing baffle is slidably connected to the inside of the test box.

[0011] Preferably, the outer wall of the guide block is fixedly connected to a positioning frame, a sleeve is provided on the upper surface of the positioning frame, a pressure plate is slidably connected to the inner wall of the sleeve, a third spring is fixedly connected to the lower surface of the pressure plate, the upper surface of the pressure plate is fixedly connected to a transmission column, the top of the transmission column is fixedly connected to a pressure plate, a sensor is provided on the upper surface of the pressure plate, and the upper surface of the sensor is provided on the lower surface of the upper cover.

[0012] Preferably, the inner wall of the positioning frame is fixedly connected to a hydraulic cylinder, a ladder block is fixedly provided at the output end of the hydraulic cylinder, both side outer walls of the ladder block are slidably connected to wedge blocks, the lower surface of the wedge block is fixedly connected to a sliding bar, and the outer wall of the sliding bar is slidably connected to the inner wall of the positioning frame.

[0013] Preferably, the outer wall of the wedge block is fixedly connected with a support plate, the outer wall of the support plate is fixedly connected with a clamping plate, and the outer wall of the clamping plate is arranged on the outer wall of the fastener body.

[0014] Preferably, the upper surface of the ladder block is fixedly connected to a fixing frame, the outer wall of the fixing frame is fixedly connected to a rack, the outer wall of the rack is meshingly connected to a moving gear, and the lower surface of the moving gear is rotatably connected to the upper surface of the positioning frame.

[0015] Working principle: When the device is needed, first pull the moving plate upward, and the moving plate is driven by the moving column to pass through the inclined block to separate from the inner wall of the slot. At this time, the second spring rebounds and pushes the placement plate outward, thereby quickly pushing the placement plate outward. After that, the fastener body of the same batch is installed on the placement plate through the built-in mounting hole of the placement plate, and then the placement plate is pushed to the inner wall of the support frame until the closing plate slides to the position of the inclined block. The first spring rebounds and can push the inclined block to the inner wall of the slot to limit the closing plate. The outward thrust of the second spring can ensure the stability of the placement plate, thereby ensuring the stability of the fastener body during testing.

[0016] The air intake pipe is opened to pass hydrogen into the interior of the test box for testing, and then the motor is turned on. The output end of the motor can drive the connecting rod to rotate, and the motor can synchronously drive the first bevel gears at both ends to rotate, thereby driving the screw to rotate on the upper surface of the cross plate through the second bevel gear, and can drive the guide block to move up and down. When the guide block moves, it can slide inside the test box through the sealing baffle to ensure the sealing inside the test box. The guide block can synchronously drive the positioning frame to slide on the inner wall of the test box until the clamping plate is driven to move to the position of the fastener body. The hydraulic cylinder is turned on, and the output end of the hydraulic cylinder can move the ladder block, thereby pulling the wedge blocks on both sides through the ladder block to align and close together through the sliding bar, and the ladder block can drive the fixed frame to move synchronously, and the reverse force between the rack and the moving gear drives the fixed frame on the other side of the positioning frame to slide synchronously relative to each other, thereby driving the wedge blocks on the other side to align and close together synchronously, thereby driving the clamping plate to clamp and fix multiple fastener bodies at the same time through the support plate, thereby improving the test efficiency and test accuracy.

[0017] After clamping, the motor is turned on to drive the positioning frame to move upward. At this time, the positioning frame can move upward at the same time through the sleeve, thereby squeezing the third spring through the pressure plate, and applying pressure to the sensor through the pressure plate at the top of the transmission column, thereby increasing the force area of ​​the sensor and improving the stability and accuracy of the test.

[0018] The present invention provides a fastener hydrogen embrittlement testing device, which has the following beneficial effects: 1. The present invention pulls the movable plate upward to drive the inclined block out of the slot, and pushes the placement plate out through the second spring to quickly replace the fastener, and pushes the placement plate back to the inner wall of the support frame. The first spring rebounds to push the inclined block back to the slot. At the same time, the second spring ensures the stability of the placement plate, thereby ensuring the stability and test efficiency of the fastener during testing.

[0019] 2. In the present invention, the hydraulic cylinder is turned on, and its output end drives the ladder block to move, pulling the wedge blocks on both sides to be aligned and close together through the slide bar. At the same time, the ladder block drives the fixed frame to move synchronously, and the reverse force of the rack and the moving gear is utilized to make the fixed frame on the other side slide synchronously relative to each other. The clamping plate is driven by the support plate to synchronously clamp and fix multiple fastener bodies, thereby reducing the discreteness of the test data of the same batch and improving the accuracy of the test.

[0020] 3. After the present invention clamps and fixes multiple fastener bodies synchronously, the motor is turned on, and its output end drives the connecting rod to rotate, and at the same time drives the first bevel gears at both ends to rotate. The first bevel gear drives the second bevel gear, and then the screw rod rotates on the upper surface of the cross plate, driving the guide block to move upward, thereby adjusting the position of the fastener tension test and improving the flexibility of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a fastener hydrogen embrittlement testing device of the present invention; Figure 2 It is a schematic diagram of the partial structure of a connecting rod of a fastener hydrogen embrittlement testing device of the present invention; Figure 3 It is a schematic diagram of the partial structure of the inclined block of a fastener hydrogen embrittlement testing device of the present invention; Figure 4 It is a partial structural schematic diagram of a positioning frame of a fastener hydrogen embrittlement testing device of the present invention; Figure 5 It is a schematic diagram of the partial structure of a placement plate of a fastener hydrogen embrittlement testing device of the present invention; Figure 6 It is a schematic diagram of the partial structure of a ladder block of a fastener hydrogen embrittlement testing device of the present invention; Figure 7 The figure is a schematic diagram of the partial structure of a rack of a fastener hydrogen embrittlement testing device of the present invention.

[0022] Among them, 1. test box; 2. closing plate; 3. card slot; 4. placement plate; 5. fastener body; 6. support frame; 7. moving plate; 8. first spring; 9. moving column; 10. inclined block; 11. second spring; 12. intake duct; 13. displacement duct; 14. exhaust duct; 15. upper cover; 16. motor; 17. connecting rod; 18. first bevel gear; 19. second bevel gear; 20. screw rod; 21. cross plate; 22. guide block; 23. sealing baffle; 24. positioning frame; 25. sleeve; 26. pressure plate; 27. third spring; 28. transmission column; 29. ​​pressure plate; 30. sensor; 31. hydraulic cylinder; 32. ladder block; 33. wedge block; 34. slide bar; 35. support plate; 36. clamping plate; 37. fixed frame; 38. rack; 39. moving gear. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Please see attached Figure 1 -Attached Figure 5 The embodiment of the present invention provides a fastener hydrogen embrittlement testing device, including a test box 1, the inner wall of the test box 1 is provided with a plywood 2, the interior of the plywood 2 is provided with a slot 3, the outer wall of the plywood 2 is fixedly connected with a placement plate 4, the interior of the placement plate 4 is provided with a fastener body 5, the inner walls of both sides of the test box 1 are fixedly connected with a support frame 6, the outer wall of the placement plate 4 is slidably connected to the inner wall of the support frame 6, the inner wall of the support frame 6 is fixedly connected with a second spring 11, the outer wall of the placement plate 4 is arranged on the outer wall of the second spring 11, the inner wall of the test box 1 is slidably connected with a moving plate 7, the upper surface of the moving plate 7 is fixedly connected with a first spring 8, the lower surface of the moving plate 7 is fixedly connected with a moving column 9, the bottom end of the moving column 9 is fixedly connected with an inclined block 10, the outer wall of the inclined block 10 is slidably connected to the inner wall of the test box 1, the outer wall of the inclined block 10 is arranged on the inner wall of the slot 3, and a ventilation component is arranged inside the test box 1, and the ventilation component is used to adjust the test gas environment.

[0025] Specifically, the test box 1 can support the position of the plywood 2, and the plywood 2 can ensure the sealing inside the test box 1, the plywood 2 has a fixed support function for the placement plate 4, and the placement plate 4 can install the position of the same batch of fastener bodies 5 for fixed testing, and the test box 1 has a fixed support function for the support frame 6, and the support frame 6 can support the sliding and installation position of the placement plate 4, so as to achieve the positioning of the test position of the fastener body 5 and ensure the accuracy of the position for subsequent pull-up testing, and the support frame 6 has a fixed support function for the second spring 11, and the outward thrust of the second spring 11 can push the placement plate 4 outward when the placement plate 4 is disassembled, so as to quickly replace the test. The test box 1 can support the sliding position of the movable plate 7, and when the movable plate 7 is pulled upward, the movable column 9 can be driven to move upward inside the test box 1, and the movable column 9 has a fixed support function for the inclined block 10, thereby driving the inclined block 10 to separate from the inner wall of the card slot 3, and realizing the rapid disassembly of the placement plate 4. After that, the placement plate 4 is pushed into the inner wall of the support frame 6 by pushing the handle on the outer wall of the card slot 3. The rebound of the first spring 8 can drive the inclined block 10 to slide to the inner wall of the card slot 3, limit the joint plate 2, and then the second spring 11 can ensure the stability of the placement plate 4, thereby ensuring the accuracy of the subsequent test of the fastener body 5 and the test efficiency.

[0026] Please see attached Figure 1 The ventilation component includes an air intake pipe 12, the outer wall of the air intake pipe 12 is arranged inside the test box 1, a displacement pipe 13 is arranged inside the test box 1, and an exhaust pipe 14 is arranged inside the test box 1. The air intake pipe 12, the displacement pipe 13 and the exhaust pipe 14 are all provided with valves.

[0027] Specifically, the air inlet pipe 12 can pass hydrogen into the test box 1 to perform hydrogen embrittlement testing, while the displacement pipe 13 is used to pass inert gas to discharge the hydrogen inside the test box 1 after the test is completed, and the exhaust pipe 14 provides an exhaust outlet.

[0028] Please see attached Figure 1 and attached Figure 4 The upper surface of the test box 1 is fixedly connected with an upper cover 15, the outer wall of the upper cover 15 is fixedly connected with a motor 16, the output end of the motor 16 is fixedly connected with a connecting rod 17, and the outer wall of the connecting rod 17 is rotatably connected to the inside of the upper cover 15; the outer wall of the connecting rod 17 is fixedly connected with a first bevel gear 18, the outer wall of the first bevel gear 18 is meshedly connected with a second bevel gear 19, the inside of the second bevel gear 19 is fixedly connected with a screw rod 20, and the outer wall of the screw rod 20 is rotatably connected to the inside of the upper cover 15; the outer walls on both sides of the test box 1 are fixedly connected with horizontal plates 21, and the bottom end of the screw rod 20 is rotatably connected to the upper surface of the horizontal plate 21.

[0029] Specifically, the test box 1 has a fixed supporting function for the upper cover 15, and the upper cover 15 can ensure the sealing of the upper part of the test box 1, and the upper cover 15 has a fixed supporting function for the motor 16. When the motor 16 is turned on, its output end can drive the connecting rod 17 to rotate, and the upper cover 15 can support the rotation position of the connecting rod 17. The connecting rod 17 has a fixed supporting function for the first bevel gear 18. When the connecting rod 17 rotates, it can drive the first bevel gears 18 at both ends to rotate synchronously, and the reverse force generated by the meshing connection of the first bevel gear 18 can drive the second bevel gear 19 to rotate, and the second bevel gear 19 has a fixed supporting function for the screw rod 20, thereby driving the screw rod 20 to rotate in the same direction inside the upper cover 15, and the test box 1 has a fixed supporting function for the cross plate 21, and the cross plate 21 can support the rotation position of the bottom end of the screw rod 20, thereby ensuring the stability of the rotation of the screw rod 20.

[0030] Please see attached Figure 3 and attached Figure 4 The outer wall of the screw rod 20 is threadedly connected with a guide block 22 , the outer wall of the guide block 22 is fixedly connected with a sealing baffle 23 , and the outer wall of the sealing baffle 23 is slidably connected to the inside of the test box 1 .

[0031] Specifically, when the screw rod 20 rotates, the reverse force generated by the thread can drive the guide block 22 to move up and down, and the guide block 22 has a fixed support function for the sealing baffle 23. The sealing baffle 23 can ensure the sealing performance inside the test box 1 when the sealing baffle 23 moves up and down.

[0032] Please see attached Figure 4 The outer wall of the guide block 22 is fixedly connected with a positioning frame 24, the upper surface of the positioning frame 24 is provided with a sleeve 25, the inner wall of the sleeve 25 is slidably connected with a pressure plate 26, the lower surface of the pressure plate 26 is fixedly connected with a third spring 27, the upper surface of the pressure plate 26 is fixedly connected with a transmission column 28, the top of the transmission column 28 is fixedly connected with a pressure plate 29, the upper surface of the pressure plate 29 is provided with a sensor 30, and the upper surface of the sensor 30 is arranged on the lower surface of the upper cover 15.

[0033] Specifically, the guide block 22 has a fixed support function for the positioning frame 24, thereby driving the positioning frame 24 to move up and down inside the test box 1, and the positioning frame 24 has a fixed support function for the sleeve 25, and the sleeve 25 can support the sliding position of the pressure plate 26, so that when the fastener body 5 is subjected to a tensile test, the pressure plate 26 can be squeezed by the third spring 27, so that pressure is applied to the sensor 30 through the pressure plates 29 on the transmission columns 28 on both sides of the positioning frame 24, thereby expanding the pressure range and improving the accuracy.

[0034] Please see attached Figure 4 -Attached Figure 7 The inner wall of the positioning frame 24 is fixedly connected with a hydraulic cylinder 31, and a ladder block 32 is fixedly arranged at the output end of the hydraulic cylinder 31. The outer walls of both sides of the ladder block 32 are slidably connected with wedge blocks 33, and the lower surface of the wedge block 33 is fixedly connected with a slide bar 34, and the outer wall of the slide bar 34 is slidably connected to the inner wall of the positioning frame 24; the outer wall of the wedge block 33 is fixedly connected with a support plate 35, and the outer wall of the support plate 35 is fixedly connected with a clamping plate 36, and the outer wall of the clamping plate 36 is arranged on the outer wall of the fastener body 5; the upper surface of the ladder block 32 is fixedly connected with a fixed frame 37, and the outer wall of the fixed frame 37 is fixedly connected with a rack 38, and the outer wall of the rack 38 is meshed with a transmission gear 39, and the lower surface of the moving gear 39 is rotatably connected to the upper surface of the positioning frame 24; Specifically, the positioning frame 24 has a fixed support function for the hydraulic cylinder 31, and by opening the hydraulic cylinder 31, the ladder block 32 can be driven to move, and when the ladder block 32 moves, the wedge blocks 33 on both sides thereof can be driven to move, and the wedge blocks 33 can slide laterally on the inner wall of the positioning frame 24 through the slide bar 34, so as to achieve the central movement or outward movement of the wedge blocks 33 on both sides, and the wedge blocks 33 have a fixed support function for the support plate 35, and the support plate 35 can support the position of the clamping plate 36, so as to achieve the central movement or outward movement of the wedge blocks 33 on both sides. The block 33 drives the clamping plate 36 to clamp and fix the fastener body 5 to ensure the stability of the tensile test. The ladder block 32 has a fixed support function for the fixed frame 37. When the fixed frame 37 moves, the rack 38 can drive the driving gear 39 to rotate, thereby driving the fixed frame 37 on the other side to move relatively synchronously, so that the ladder block 32 on the other side of the positioning frame 24 can move relatively, so as to achieve the same clamping force when clamping multiple batches, reduce the discreteness of the test data of the same batch, and thus improve the accuracy of the test.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fastener hydrogen embrittlement testing device, comprising a test box (1), characterized in that: The inner wall of the test box (1) is provided with a plywood (2), a slot (3) is provided inside the plywood (2), a placement plate (4) is fixedly connected to the outer wall of the plywood (2), a fastener body (5) is provided inside the placement plate (4), both inner walls of the test box (1) are fixedly connected to support frames (6), the outer wall of the placement plate (4) is slidably connected to the inner wall of the support frame (6), the inner wall of the support frame (6) is fixedly connected to a second spring (11), and the outer wall of the placement plate (4) is arranged on the outer side of the second spring (11). The test box (1) has a movable plate (7) slidably connected to the inner wall of the test box (1), the upper surface of the movable plate (7) is fixedly connected to a first spring (8), the lower surface of the movable plate (7) is fixedly connected to a movable column (9), the bottom end of the movable column (9) is fixedly connected to an inclined block (10), the outer wall of the inclined block (10) is slidably connected to the inner wall of the test box (1), the outer wall of the inclined block (10) is arranged on the inner wall of the slot (3), and a ventilation component is arranged inside the test box (1), and the ventilation component is used to adjust the test gas environment.

2. A fastener hydrogen embrittlement testing device according to claim 1, characterized in that: The ventilation assembly comprises an air intake duct (12), the outer wall of the air intake duct (12) being arranged inside the test box (1), a displacement duct (13) being arranged inside the test box (1), an exhaust duct (14) being arranged inside the test box (1), and the air intake duct (12), the displacement duct (13) and the exhaust duct (14) are all provided with valves.

3. A fastener hydrogen embrittlement testing device according to claim 1, characterized in that: An upper cover (15) is fixedly connected to the upper surface of the test box (1), an outer wall of the upper cover (15) is fixedly connected to a motor (16), an output end of the motor (16) is fixedly connected to a connecting rod (17), and an outer wall of the connecting rod (17) is rotatably connected to the interior of the upper cover (15).

4. A fastener hydrogen embrittlement testing device according to claim 3, characterized in that: The outer wall of the connecting rod (17) is fixedly connected to a first bevel gear (18), the outer wall of the first bevel gear (18) is meshingly connected to a second bevel gear (19), the interior of the second bevel gear (19) is fixedly connected to a screw rod (20), and the outer wall of the screw rod (20) is rotatably connected to the interior of the upper cover (15).

5. A fastener hydrogen embrittlement testing device according to claim 4, characterized in that: The outer walls on both sides of the test box (1) are fixedly connected with a transverse plate (21), and the bottom end of the screw rod (20) is rotatably connected to the upper surface of the transverse plate (21).

6. A fastener hydrogen embrittlement testing device according to claim 5, characterized in that: The outer wall of the screw rod (20) is threadedly connected to a guide block (22), the outer wall of the guide block (22) is fixedly connected to a sealing baffle (23), and the outer wall of the sealing baffle (23) is slidably connected to the interior of the test box (1).

7. A fastener hydrogen embrittlement testing device according to claim 6, characterized in that: The outer wall of the guide block (22) is fixedly connected to a positioning frame (24), the upper surface of the positioning frame (24) is provided with a sleeve (25), the inner wall of the sleeve (25) is slidably connected to a pressure plate (26), the lower surface of the pressure plate (26) is fixedly connected to a third spring (27), the upper surface of the pressure plate (26) is fixedly connected to a transmission column (28), the top end of the transmission column (28) is fixedly connected to a pressure plate (29), the upper surface of the pressure plate (29) is provided with a sensor (30), and the upper surface of the sensor (30) is arranged on the lower surface of the upper cover (15).

8. A fastener hydrogen embrittlement testing device according to claim 7, characterized in that: The inner wall of the positioning frame (24) is fixedly connected to a hydraulic cylinder (31), an output end of the hydraulic cylinder (31) is fixedly provided with a ladder block (32), both sides of the outer wall of the ladder block (32) are slidably connected to wedge blocks (33), the lower surface of the wedge block (33) is fixedly connected to a slide bar (34), and the outer wall of the slide bar (34) is slidably connected to the inner wall of the positioning frame (24).

9. A fastener hydrogen embrittlement testing device according to claim 8, characterized in that: The outer wall of the wedge block (33) is fixedly connected to a support plate (35), the outer wall of the support plate (35) is fixedly connected to a clamping plate (36), and the outer wall of the clamping plate (36) is arranged on the outer wall of the fastener body (5).

10. A fastener hydrogen embrittlement testing device according to claim 9, characterized in that: The upper surface of the ladder block (32) is fixedly connected to a fixing frame (37), the outer wall of the fixing frame (37) is fixedly connected to a rack (38), the outer wall of the rack (38) is meshingly connected to a transmission gear (39), and the lower surface of the moving gear (39) is rotatably connected to the upper surface of the positioning frame (24).

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