A fastener hydrogen embrittlement testing apparatus

Abstract

The application relates to the technical field of testing devices, and discloses a fastener hydrogen embrittlement testing device, which comprises a testing box, the inner wall of the testing box is provided with a joint plate, the inside of the joint plate is provided with a clamping groove, the outer wall of the joint plate is fixedly connected with a placing plate, the inside of the placing plate is provided with a fastener main body, the inner walls of the two sides of the testing box are fixedly connected with supporting frames, the outer wall of the placing plate is slidably connected with the inner walls of the supporting frames, the inner walls of the supporting frames are fixedly connected with second springs, the outer wall of the placing plate is arranged on the outer wall of the second spring, and the inner wall of the testing box is slidably connected with a moving plate. The moving plate is pulled to move upwards, the inclined block is driven to be separated from the clamping groove, the placing plate is pushed out through the second spring, the fastener is quickly replaced, the placing plate is pushed back to the inner wall of the supporting frame, the first spring rebounds, the inclined block is pushed back to the clamping groove, the stability of the placing plate is ensured through the second spring, and the stability and the testing efficiency during fastener testing are ensured.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to a fastener hydrogen embrittlement testing device. Background Technology

[0002] In modern industrial production, fasteners are key components that connect various parts, and their quality and performance directly affect the safety and reliability of the entire system. However, hydrogen embrittlement has a significant impact on the mechanical properties of fasteners, which may lead to brittle fracture during use and cause serious safety accidents. Therefore, it is necessary to conduct hydrogen embrittlement tests on fasteners and use the hydrogen embrittlement sensitivity coefficient obtained from the hydrogen embrittlement test to determine the hydrogen embrittlement sensitivity of the material. However, traditional fastener hydrogen embrittlement testing devices require manual positioning of the fasteners on the test 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, resulting in a longer overall test process and affecting the stability and efficiency of the test. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fastener hydrogen embrittlement testing device, which solves the problem of difficulty in quickly installing and positioning fastener placement plates, thus affecting the stability and efficiency of testing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fastener hydrogen embrittlement testing device, comprising a test chamber, an inner wall of which is provided with a composite plate, the interior of which has a slot, an outer wall of which is fixedly connected with a placement plate, the interior of which is provided with a fastener body, two inner walls of which are fixedly connected with support frames, the outer wall of which is slidably connected to the inner wall of the support frames, the inner wall of which is fixedly connected with a second spring, the outer wall of which is disposed on the outer wall of the second spring, a movable plate slidably connected to the inner wall of the test chamber, the upper surface of which is fixedly connected with a first spring, the lower surface of which is fixedly connected with a movable column, the bottom end of which is fixedly connected with a wedge, the outer wall of which is slidably connected to the inner wall of the test chamber, the outer wall of which is disposed on the inner wall of the slot, and a ventilation component provided inside the test chamber for adjusting the test gas environment.

[0006] Preferably, the ventilation assembly includes an air intake pipe, the outer wall of which is disposed inside the test chamber, a displacement pipe is disposed inside the test chamber, and an exhaust pipe is disposed inside the test chamber. Valves are provided in the air intake pipe, the displacement pipe, and the exhaust pipe.

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

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

[0009] Preferably, the test box has horizontal plates fixedly connected to both outer walls, and the bottom end of the lead screw is rotatably connected to the upper surface of the horizontal plates.

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

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

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

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

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

[0015] Working principle: When this device is needed, first pull the moving plate upward. The moving plate, driven by the moving column, disengages from the inner wall of the slot via the inclined block. At this time, the second spring rebounds, pushing the placement plate outward, thus quickly pushing the placement plate outward. Then, the fastener bodies of the same batch are installed on the placement plate through the mounting holes built into the placement plate. The placement plate is then pushed to the inner wall of the support frame until the plate slides to the position of the inclined block. At this time, the first spring rebounds, pushing the inclined block to the inner wall of the slot to limit the plate. The outward pushing force of the second spring ensures the stability of the placement plate, thus ensuring the stability of the fastener body during testing.

[0016] The hydrogen gas is introduced into the test chamber through the inlet pipe. Then, the motor is turned on, and its output drives the connecting rod to rotate. Simultaneously, the motor drives the first bevel gears at both ends to rotate, which in turn drives the lead screw to rotate on the upper surface of the horizontal plate via the second bevel gear. This also causes the guide block to move up and down. As the guide block moves, a sealing baffle slides inside the test chamber to ensure its airtightness. The guide block also simultaneously drives the positioning frame to slide against the inner wall of the test chamber until the clamping plate moves to the position of the fastener body. At this point, the hydraulic cylinder is activated, and its output moves a step block. This step block pulls the wedge blocks on both sides to center and engage via the sliding strip. The step block then drives the fixed frame to move synchronously. The opposing 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, causing the wedge blocks on the other side to center and engage synchronously. Finally, the support plate drives the clamping plate to clamp and fix multiple fastener bodies simultaneously, improving testing efficiency and accuracy.

[0017] After clamping, the positioning frame is moved upward by turning on the motor. At this time, the positioning frame can also move upward 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-bearing area of ​​the sensor and improving the stability and accuracy of the test.

[0018] This invention provides a fastener hydrogen embrittlement testing device. It has the following beneficial effects:

[0019] 1. This invention allows for the rapid replacement of fasteners by pulling the movable plate upward, causing the inclined block to disengage from the slot, and pushing the placement plate out through the second spring. The placement plate is then pushed back into the inner wall of the support frame, and the first spring rebounds, pushing the inclined block back into the slot. At the same time, the second spring ensures the stability of the placement plate, thereby guaranteeing the stability and testing efficiency of the fasteners.

[0020] 2. In this invention, when the hydraulic cylinder is activated, its output end drives the ladder block to move, pulling the wedge blocks on both sides to move closer together via the slide bar. At the same time, the ladder block drives the fixed frame to move synchronously. By utilizing the reverse force of the rack and the moving gear, the fixed frame on the other side slides synchronously relative to each other. Through the support plate, the clamping plate is driven to clamp and fix multiple fastener bodies synchronously, thereby reducing the dispersion of test data in the same batch and improving the accuracy of the test.

[0021] 3. This invention, by simultaneously clamping and fixing multiple fastener bodies, turns on the motor, and its output end drives the connecting rod to rotate, which in turn drives the first bevel gears at both ends to rotate. The first bevel gears drive the second bevel gears, thereby causing the lead screw to rotate on the surface of the horizontal plate, which in turn moves the guide block upward, thus achieving the effect of adjusting the position for fastener tensile testing and improving the flexibility of testing. Attached Figure Description

[0022] Figure 1 This is a perspective view of a fastener hydrogen embrittlement testing device according to the present invention;

[0023] Figure 2 This is a partial structural diagram of the connecting rod of a fastener hydrogen embrittlement testing device according to the present invention;

[0024] Figure 3 This is a partial structural diagram of the inclined block of a fastener hydrogen embrittlement testing device according to the present invention;

[0025] Figure 4 This is a partial structural diagram of the positioning frame of a fastener hydrogen embrittlement testing device according to the present invention;

[0026] Figure 5 This is a partial structural diagram of the placement plate of a fastener hydrogen embrittlement testing device according to the present invention;

[0027] Figure 6 This is a partial structural diagram of the ladder block of a fastener hydrogen embrittlement testing device according to the present invention;

[0028] Figure 7 This is a partial structural diagram of the rack of a fastener hydrogen embrittlement testing device according to the present invention.

[0029] The components are as follows: 1. Test box; 2. Composite plate; 3. 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 pipe; 13. Replacement pipe; 14. Exhaust pipe; 15. Top cover; 16. Motor; 17. Connecting rod; 18. First bevel gear; 19. Second bevel gear; 20. Lead screw; 21. Horizontal 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. Sliding bar; 35. Support plate; 36. Clamping plate; 37. Fixing frame; 38. Rack; 39. Moving gear. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Please see the appendix Figure 1 -Appendix Figure 5 This invention provides a fastener hydrogen embrittlement testing device, including a test chamber 1. The inner wall of the test chamber 1 is provided with a composite plate 2, and the interior of the composite plate 2 has a slot 3. A placement plate 4 is fixedly connected to the outer wall of the composite plate 2. A fastener body 5 is disposed inside the placement plate 4. Support frames 6 are fixedly connected to both inner walls of the test chamber 1. The outer wall of the placement plate 4 is slidably connected to the inner wall of the support frame 6. A second spring 11 is fixedly connected to the inner wall of the support frame 6, and the outer wall of the placement plate 4 is disposed on the outer wall of the second spring 11. A movable plate 7 is slidably connected to the inner wall of the test chamber 1. A first spring 8 is fixedly connected to the upper surface of the movable plate 7, and a movable column 9 is fixedly connected to the lower surface of the movable plate 7. A wedge 10 is fixedly connected to the bottom end of the movable column 9, and the outer wall of the wedge 10 is slidably connected to the inner wall of the test chamber 1. The outer wall of the wedge 10 is disposed on the inner wall of the slot 3. A ventilation component is provided inside the test chamber 1 to regulate the test gas environment.

[0032] Specifically, the test chamber 1 supports the position of the plywood 2, and the plywood 2 ensures the airtightness of the test chamber 1. The plywood 2 provides fixed support for the placement plate 4, which in turn fixes the position of the fastener body 5 to be tested. The test chamber 1 provides fixed support for the support frame 6, which supports the sliding and installation position of the placement plate 4, thereby positioning the fastener body 5 for testing and ensuring accurate positioning for subsequent tensile testing. The support frame 6 provides fixed support for the second spring 11, and the outward pushing force of the second spring 11 can push the placement plate 4 outward when it is disassembled, facilitating quick replacement of the test plate. The test chamber 1 supports the sliding position of the movable plate 7. When the movable plate 7 is pulled upward, the movable column 9 moves upward inside the test chamber 1. The movable column 9 provides fixed support for the inclined block 10, thereby causing the inclined block 10 to disengage from the inner wall of the slot 3, enabling the quick disassembly of the placement plate 4. Afterward, by pushing the handle on the outer wall of the slot 3, the placement plate 4 is pushed into the inner wall of the support frame 6. The rebound of the first spring 8 causes the inclined block 10 to slide to the inner wall of the slot 3, limiting the position of the composite plate 2. The second spring 11 ensures the stability of the placement plate 4, thereby ensuring the accuracy and efficiency of subsequent testing of the fastener body 5.

[0033] Please see the appendix Figure 1 The ventilation assembly includes an air intake pipe 12, the outer wall of which is located inside the test chamber 1. The test chamber 1 is equipped with a displacement pipe 13 and an exhaust pipe 14. Valves are provided in the air intake pipe 12, the displacement pipe 13, and the exhaust pipe 14.

[0034] Specifically, the intake pipe 12 can introduce hydrogen into the test chamber 1 to conduct a hydrogen embrittlement test, while the displacement pipe 13 is used to introduce inert gas to discharge the hydrogen inside the test chamber 1 after the test is completed, and the exhaust pipe 14 provides an exhaust outlet.

[0035] Please see the appendix Figure 1 and attached Figure 4 A top cover 15 is fixedly connected to the upper surface of the test chamber 1. A motor 16 is fixedly connected to the outer wall of the top cover 15. A connecting rod 17 is fixedly connected to the output end of the motor 16. The outer wall of the connecting rod 17 is rotatably connected to the inside of the top cover 15. A first bevel gear 18 is fixedly connected to the outer wall of the connecting rod 17. A second bevel gear 19 is meshed with the outer wall of the first bevel gear 18. A lead screw 20 is fixedly connected to the inside of the second bevel gear 19. The outer wall of the lead screw 20 is rotatably connected to the inside of the top cover 15. Horizontal plates 21 are fixedly connected to the outer walls on both sides of the test chamber 1. The bottom end of the lead screw 20 is rotatably connected to the upper surface of the horizontal plate 21.

[0036] Specifically, the test chamber 1 provides fixed support for the upper cover 15, and the upper cover 15 ensures the airtightness of the upper part of the test chamber 1. The upper cover 15 also provides fixed support for the motor 16. When the motor 16 is turned on, its output end can drive the connecting rod 17 to rotate. The upper cover 15 can support the rotation position of the connecting rod 17. The connecting rod 17 provides fixed support for the first bevel gear 18. When the connecting rod 17 rotates, it can drive the first bevel gear 18 at both ends to rotate synchronously. The reverse force generated by the meshing connection of the first bevel gear 18 can drive the second bevel gear 19 to rotate. The second bevel gear 19 provides fixed support for the lead screw 20, thereby driving the lead screw 20 to rotate in the same direction inside the upper cover 15. The test chamber 1 provides fixed support for the horizontal plate 21, and the horizontal plate 21 can support the rotation position of the bottom end of the lead screw 20, thereby ensuring the stability of the rotation of the lead screw 20.

[0037] Please see the appendix Figure 3 and attached Figure 4 The outer wall of the lead screw 20 is threadedly connected to a guide block 22, and the outer wall of the guide block 22 is fixedly connected to a sealing baffle 23. The outer wall of the sealing baffle 23 is slidably connected to the inside of the test chamber 1.

[0038] Specifically, when the lead screw 20 rotates, the reverse force generated by the thread can drive the guide block 22 to move up and down. The guide block 22 has a fixed support function for the sealing baffle 23. The sealing baffle 23 can ensure the sealing performance of the test chamber 1 when it moves up and down.

[0039] Please see the appendix Figure 4 A positioning frame 24 is fixedly connected to the outer wall of the guide block 22. A sleeve 25 is provided on the upper surface of the positioning frame 24. A pressure plate 26 is slidably connected to the inner wall of the sleeve 25. A third spring 27 is fixedly connected to the lower surface of the pressure plate 26. A transmission column 28 is fixedly connected to the upper surface of the pressure plate 26. A pressure plate 29 is fixedly connected to the top of the transmission column 28. A sensor 30 is provided on the upper surface of the pressure plate 29. The upper surface of the sensor 30 is located on the lower surface of the upper cover 15.

[0040] Specifically, the guide block 22 provides fixed support for the positioning frame 24, thereby enabling the positioning frame 24 to move up and down inside the test chamber 1. The positioning frame 24 provides fixed support for the sleeve 25, which in turn supports the sliding position of the pressure plate 26. Thus, when performing a tensile test on the fastener body 5, the third spring 27 can compress the pressure plate 26, thereby applying pressure to the sensor 30 through the pressure plates 29 on the transmission columns 28 on both sides of the positioning frame 24, expanding the pressure range and improving accuracy.

[0041] Please see the appendix Figure 4 -Appendix Figure 7A hydraulic cylinder 31 is fixedly connected to the inner wall of the positioning frame 24. A step block 32 is fixedly installed at the output end of the hydraulic cylinder 31. Wedge blocks 33 are slidably connected to both outer walls of the step block 32. A slide bar 34 is fixedly connected to the lower surface of the wedge block 33. The outer wall of the slide bar 34 is slidably connected to the inner wall of the positioning frame 24. A support plate 35 is fixedly connected to the outer wall of the wedge block 33. A clamping plate 36 is fixedly connected to the outer wall of the support plate 35. The outer wall of the clamping plate 36 is set on the outer wall of the fastener body 5. A fixing frame 37 is fixedly connected to the upper surface of the step block 32. A rack 38 is fixedly connected to the outer wall of the fixing frame 37. A transmission gear 39 is meshed with the outer wall of the rack 38. The lower surface of the transmission gear 39 is rotatably connected to the upper surface of the positioning frame 24.

[0042] Specifically, the positioning frame 24 provides fixed support for the hydraulic cylinder 31, and by activating the hydraulic cylinder 31, the ladder block 32 can be moved. When the ladder block 32 moves, it can move the wedge blocks 33 on both sides. The wedge blocks 33 can slide laterally on the inner wall of the positioning frame 24 via the slide bar 34, thereby achieving centered movement or outward movement of the wedge blocks 33 on both sides. The wedge blocks 33 provide fixed support for the support plate 35, which supports the position of the clamping plate 36, thus allowing the wedge blocks 33 to move laterally. Block 33 drives clamping plate 36 to clamp and fix fastener body 5, ensuring the stability of tensile test. Step block 32 has a fixed support function for fixing frame 37. When fixing frame 37 moves, it can drive moving gear 39 to rotate through rack 38, thereby driving the fixing frame 37 on the other side to move synchronously relative to each other, so that the step block 32 on the other side of positioning frame 24 can move relative to each other. This achieves the same clamping force when clamping multiple batches, reduces the dispersion of test data in the same batch, and thus improves the accuracy of the test.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fastener hydrogen embrittlement testing device, comprising a test chamber (1) and a positioning frame (24), characterized in that, The inner wall of the test box (1) is provided with a composite plate (2), and the interior of the composite plate (2) is provided with a slot (3). The outer wall of the composite plate (2) is fixedly connected with a placement plate (4), and the interior of the placement plate (4) is provided with a fastener body (5). The inner walls on both sides of the test box (1) are fixedly connected with 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 with a second spring (11). The outer wall of the placement plate (4) is located outside the second spring (11). The inner wall of the test chamber (1) is slidably connected to a movable plate (7), 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 chamber (1), the outer wall of the inclined block (10) is set on the inner wall of the slot (3), and the interior of the test chamber (1) is provided with a ventilation component, which is used to adjust the test gas environment; The positioning frame (24) is set inside the test box (1). A hydraulic cylinder (31) is fixedly connected to the inner wall of the positioning frame (24). A step block (32) is fixedly set at the output end of the hydraulic cylinder (31). Wedge blocks (33) are slidably connected to both outer walls of the step block (32). A slide bar (34) is fixedly connected to the lower surface of the wedge block (33). 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 to a support plate (35), and the outer wall of the support plate (35) is fixedly connected to a clamping plate (36). The outer wall of the clamping plate (36) is set on the outer wall of the fastener body (5). A fixed frame (37) is fixedly connected to the upper surface of the step block (32), and a rack (38) is fixedly connected to the outer wall of the fixed frame (37). A moving gear (39) is meshed with the outer wall of the rack (38), and the lower surface of the moving gear (39) is rotatably connected to the upper surface of the positioning frame (24).

2. The fastener hydrogen embrittlement testing device according to claim 1, characterized in that, The ventilation assembly includes an air intake pipe (12), the outer wall of which is disposed inside the test chamber (1). The test chamber (1) is provided with a displacement pipe (13) and an exhaust pipe (14). The air intake pipe (12), displacement pipe (13) and exhaust pipe (14) are all provided with valves.

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

4. The 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 meshed with a second bevel gear (19), the inside of the second bevel gear (19) is fixedly connected to a lead screw (20), and the outer wall of the lead screw (20) is rotatably connected to the inside of the upper cover (15).

5. The fastener hydrogen embrittlement testing device according to claim 4, characterized in that, The test box (1) has horizontal plates (21) fixedly connected to the outer walls on both sides, and the bottom end of the lead screw (20) is rotatably connected to the upper surface of the horizontal plates (21).

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

7. The 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). A sleeve (25) is provided on the upper surface of the positioning frame (24). A pressure plate (26) is slidably connected to the inner wall of the sleeve (25). A third spring (27) is fixedly connected to the lower surface of the pressure plate (26). A transmission column (28) is fixedly connected to the upper surface of the pressure plate (26). A pressure plate (29) is fixedly connected to the top of the transmission column (28). A sensor (30) is provided on the upper surface of the pressure plate (29). The upper surface of the sensor (30) is provided on the lower surface of the upper cover (15).

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