A transverse vibration testing machine for fasteners

Abstract

The present invention belongs to the technical field of fastener testing. The present invention discloses a fastener lateral vibration testing machine, which includes a testing machine main body. A platform is fixedly connected to the testing machine main body. A notch and a placement groove are formed in the testing machine main body. By setting a reciprocating impact assembly, during the lateral vibration of the fastener, the vibration motor is started to apply lateral vibration to the fastener through the platform and the vibrating body. This kind of vibration is high-frequency vibration. The second motor is started to drive the round block and the top column to rotate. During the rotation of the top column, the moving plate and the moving frame can be pushed to move, and the first spring is compressed. When the top column is not in contact with the moving plate, under the action of the first spring, the impact block will suddenly impact the platform. The continuous rotation of the top column can make the impact block continuously impact the platform to generate vibration. This kind of vibration is low-frequency rotation. The high-frequency vibration and the low-frequency rotation act on the fastener together to realize the anti-loosening performance of the fastener as realistically as possible under the working environment.

Description

Technical Field

[0001] The present invention relates to the technical field of fastener testing, and more specifically, the present invention relates to a lateral vibration testing machine for fasteners. Background Art

[0002] With the continuous development of the industrial field, the performance requirements for fasteners in various complex environments are also getting higher and higher. Especially in a vibrating environment, the self-locking performance of fasteners directly affects the stability and safety of equipment and products. Therefore, during the production process of fasteners, a special vibration testing machine is needed to conduct lateral vibration tests on fasteners to evaluate their anti-loosening performance.

[0003] Existing vibration testing machines are mainly used to detect the anti-loosening performance of threaded fasteners under the condition of being applied with lateral dynamic loads of a certain frequency and displacement. This equipment can analyze the change curves of the pre-tightening axial force, lateral displacement, and lateral vibration period, so as to judge the anti-loosening characteristics of threaded fasteners. Existing testing machines usually apply lateral vibration to fasteners through vibration motors.

[0004] Currently, the vibration motors of vibration testing machines can provide lateral vibrations of different frequencies for fasteners, and all the provided vibrations are high-frequency vibrations. However, in the real environment, fasteners not only have to bear high-frequency vibrations but also low-frequency vibrations. At present, the vibration testing machines cannot provide a mixed random vibration effect of high-frequency and low-frequency vibrations, resulting in an inaccurate test of the anti-loosening performance of fasteners; and currently, the vibration testing machines are not convenient for automatically loading fasteners, and the loading operation is rather cumbersome. Summary of the Invention

[0005] In order to solve the problems in the background art that the current vibration testing machines cannot provide a mixed random vibration effect of high-frequency and low-frequency vibrations and that the current vibration testing machines are not convenient for automatically loading fasteners, the present invention provides a lateral vibration testing machine for fasteners.

[0006] To achieve the above object, the present invention provides the following technical solution: A lateral vibration testing machine for fasteners, comprising:

[0007] A testing machine main body, on which a platform is fixedly connected. A notch and a placement groove are provided on the testing machine main body. A placement block is fixedly connected in the placement groove. A limiting groove is provided in the placement block. Two vibrating bodies are fixedly connected to the top of the platform. A gasket is arranged between the two vibrating bodies. A first electric push rod is arranged directly above the gasket. The output end of the first electric push rod is fixedly connected with a connecting frame. A first motor is fixedly connected in the connecting frame. The output shaft of the first motor is fixedly connected with a first rotating shaft. A dynamic torque sensor is fixedly connected to the bottom end of the first rotating shaft. A twisting sleeve is fixedly connected to the bottom end of the dynamic torque sensor. A connecting plate is fixedly connected to the top of the platform. A vibration motor is fixedly connected to the connecting plate;

[0008] A reciprocating impact assembly for reciprocatingly impacting a platform to generate lateral low-frequency vibrations. The reciprocating impact assembly includes an impact block that contacts one side wall of the platform.

[0009] An adjustment assembly for adjusting the impact force of the impact block on the platform.

[0010] An automatic feeding assembly for automatically feeding bolts to the gasket.

[0011] Further, the reciprocating impact assembly includes a box body fixed to the main body of the testing machine. The first electric push rod is fixed to the top of the box body through a support plate. A second motor is fixed to one side wall of the box body. The output shaft of the second motor is fixed to a second rotating shaft rotatably connected to the box body. One end of the second rotating shaft is fixed to a round block. Two ejector posts are arranged on the round block. Two T-shaped rods are fixed to the inner wall of the box body. A moving frame is slidably connected to the outer walls of the two T-shaped rods. A first spring sleeved outside the T-shaped rods is fixed between the moving frame and the inner wall of the box body. The top of the moving frame is fixed to a moving plate. The moving plate is located on the trajectory of the ejector post rotating around the second rotating shaft. The impact block is fixed to the moving frame.

[0012] Further, the adjustment assembly includes a circular groove opened in the round block. The ejector post is slidably inserted into the circular groove. A second spring is fixed between one end of the ejector post and the circular groove. A T-shaped channel communicating with the two circular grooves is opened in the round block. A circular ring block is rotatably connected to one side wall of the round block. An inflation pipe communicating with the T-shaped channel is fixed to the circular ring block. One end of the inflation pipe is connected to an external inflation device.

[0013] Further, a cavity is opened in the impact block. A plurality of third springs are fixed between the inner walls of the cavity. Impact balls are fixed between two corresponding third springs.

[0014] Further, the automatic feeding assembly includes a second electric push rod fixed in the main body of the testing machine. The output end of the second electric push rod is fixed to a telescopic sleeve. A magnet is fixed to the top end of the telescopic sleeve. A bolt arranged in a limiting groove is adsorbed on the top of the magnet. A round plate is placed at the top end of the placement groove. A rotation prevention cylinder is fixed to the top of the round plate. A limiting groove is opened in the rotation prevention cylinder. A round opening is opened at the top of the rotation prevention cylinder. The twisting sleeve is aligned with the gasket, the round opening, and the bolt.

[0015] Further, a locking assembly for locking the anti-rotation cylinder is provided on the main body of the testing machine. The locking assembly includes a plug block and a socket opened on the anti-rotation cylinder. The telescopic sleeve includes a cylinder. A slot is provided inside the cylinder. A plug post is slidably inserted into the slot. A fourth spring is fixedly connected between the bottom end of the plug post and the inner wall of the slot. A fixing ring is fixedly connected to the inner wall of the slot. A fixing rod is fixedly connected to the outer wall of the cylinder. A rack is fixedly connected to one end of the fixing rod. An avoidance opening for avoiding the fixing rod and the rack is opened in the main body of the testing machine. Two fixing plates are fixedly connected to the top of the main body of the testing machine. A threaded rod is rotatably connected between the two fixing plates. A gear is fixedly connected to one end of the threaded rod. Some teeth of the gear are directly above the teeth of the rack. An L-shaped plate slidably connected to the top of the main body of the testing machine is threadedly connected to the outer wall of the threaded rod. The plug block is fixedly connected to one end of the L-shaped plate.

[0016] Further, an adaptation assembly for adapting to nuts of various sizes is provided on the twisting sleeve. The adaptation assembly includes two guide rods slidably inserted on the twisting sleeve. A limiting clamping plate is fixedly connected to one end of the guide rod. A round head block is fixedly connected to the other end of the guide rod. A fifth spring sleeved outside the guide rod is fixedly connected between the round head block and the twisting sleeve.

[0017] Further, a conical limiting shell is provided on the outer wall of the twisting sleeve. Internal threads are opened on the inner wall of the conical limiting shell. External threads adapted to the internal threads are opened on the outer wall of the twisting sleeve. The conical limiting shell and the twisting sleeve are threadedly connected through the internal threads and the external threads. A rotating block is fixedly connected to the outer wall of the conical limiting shell.

[0018] The technical effects and advantages of a transverse vibration testing machine for fasteners according to the present invention:

[0019] (1) By providing a reciprocating impact assembly, during the process of applying transverse vibration to the fastener, the vibration motor is started to apply transverse vibration to the fastener through the platform and the vibrating body. This kind of vibration is high-frequency vibration. The second motor is started to drive the second rotating shaft to rotate. The second rotating shaft can drive the round block and the top post to rotate. During the rotation of the top post, the moving plate and the moving frame can be pushed to move. The first spring is compressed. The moving frame drives the impact block to be separated from the platform. When the top post is separated from the moving plate, under the action of the first spring, the impact block will suddenly impact the platform, and the impact generates vibration. The continuous rotation of the top post can make the impact block continuously impact the platform to generate vibration. This kind of vibration is low-frequency rotation. The high-frequency vibration and the low-frequency rotation act on the fastener together to realize the simulation and restoration of the anti-loosening performance of the fastener in the working environment as realistically as possible.

[0020] (2) By setting up an automatic feeding component, the bolt to be detected is placed in the limiting groove of the placing block. The bolt is adsorbed by the magnet. The second electric push rod is activated to drive the telescopic sleeve to move upward. The telescopic sleeve pushes the bolt into the limiting groove of the upper anti-rotation cylinder above. The bolt passes through the round opening, and the upward movement of the bolt can drive the anti-rotation cylinder to move upward until the top of the anti-rotation cylinder fits against the bottom of the platform. The bolt passes through the gasket. The second electric push rod continues to push the telescopic sleeve, and the cylinder moves upward, causing the insertion post to gradually insert into the insertion slot until the bottom end of the insertion post abuts against the fixed ring. The cylinder can drive the gear to rotate through the rack, the gear drives the threaded rod to rotate, and the threaded rod drives the insertion block to insert into the insertion opening of the anti-rotation cylinder through the L-shaped plate, so as to limit the anti-rotation cylinder and prevent the anti-rotation cylinder from rotating during the test. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the adapter component in the present invention;

[0023] Figure 3 is a schematic diagram of the reciprocating impact component in the present invention;

[0024] Figure 4 is a schematic diagram of the adjustment component in the present invention;

[0025] Figure 5 is a schematic diagram of the inner wall structure of the impact block in the present invention;

[0026] Figure 6 is a schematic diagram of the internal structure of the test machine main body in the present invention;

[0027] Figure 7 is a schematic cross-sectional view of the telescopic sleeve in the present invention;

[0028] Figure 8 in the present invention Figure 6 is an enlarged schematic diagram at A in;

[0029] Figure 9 is a schematic diagram of the local three-dimensional structure in the present invention.

[0030] In the figure:

[0031] 1. Main body of the testing machine; 2. Platform; 3. Notch; 401. Placing groove; 402. Placing block; 403. Limiting groove; 5. Vibrating body; 6. Gasket; 7. First electric push rod; 8. Connecting frame; 9. First motor; 10. First rotating shaft; 11. Dynamic torsion sensor; 12. Torsion sleeve; 13. Connecting plate; 14. Vibration motor; 15. Box body; 16. Second motor; 17. Second rotating shaft; 18. Round block; 19. Top column; 20. T-shaped rod; 21. Moving frame; 22. First spring; 23. Moving plate; 24. Impact block; 25. Round groove; 26. Second spring; 27. T-shaped channel; 28. Ring block; 29. Inflatable tube; 30. Cavity; 31. Third spring; 32. Impact ball; 33. Second electric push rod; 34. Telescopic sleeve; 35. Magnet; 36. Round plate; 37. Anti-rotation cylinder; 38. Limiting groove; 39. Round opening; 40. Cylinder; 41. Slot; 42. Inserting post; 43. Fourth spring; 44. Fixed ring; 45. Fixed rod; 46. Rack; 47. Fixed plate; 48. Threaded rod; 49. Gear; 50. L-shaped plate; 51. Inserting block; 52. Inserting opening; 53. Guide rod; 54. Limiting clamping plate; 55. Round head block; 56. Fifth spring; 57. Conical limiting shell; 58. Internal thread; 59. External thread; 60. Rotating block. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Refer to Figure 1 . Figure 2 . Figure 3 And Figure 7 , a transverse vibration testing machine for fasteners, comprising:

[0034] The main body of the testing machine 1, on which a platform 2 is fixedly connected. There are a notch 3 and a placement groove 401 on the main body of the testing machine 1. A placement block 402 is fixedly connected in the placement groove 401. A limiting groove 403 is provided in the placement block 402. Two vibrating bodies 5 are fixedly connected to the top of the platform 2. A gasket 6 is arranged between the two vibrating bodies 5. A first electric push rod 7 is arranged directly above the gasket 6. The output end of the first electric push rod 7 is fixedly connected with a connecting frame 8. A first motor 9 is fixedly connected in the connecting frame 8. The output shaft of the first motor 9 is fixedly connected with a first rotating shaft 10. A dynamic torque sensor 11 is fixedly connected to the bottom end of the first rotating shaft 10. A twisting sleeve 12 is fixedly connected to the bottom end of the dynamic torque sensor 11. A connecting plate 13 is fixedly connected to the top of the platform 2. A vibration motor 14 is fixedly connected to the connecting plate 13;

[0035] A reciprocating impact assembly, which is used to reciprocally impact the platform 2 to generate horizontal low-frequency vibration. The reciprocating impact assembly includes an impact block 24, and the impact block 24 contacts one side wall of the platform 2;

[0036] An adjustment assembly, which is used to adjust the impact force of the impact block 24 on the platform 2;

[0037] An automatic feeding assembly, which is used to automatically send bolts to the gasket 6;

[0038] During use, place the bolt to be tested in the placement groove 401. The bolt is in the limiting groove 403 of the placement block 402. The bolt is automatically fed to the gasket 6 through the automatic feeding assembly, so that the bolt passes through the gasket 6. Place the nut in the twisting sleeve 12. Start the first electric push rod 7 to drive the twisting sleeve 12 to move downward. The twisting sleeve 12 drives the nut to reach the bolt. Start the first motor 9. The first motor 9 drives the first rotating shaft 10, the dynamic torque sensor 11 and the twisting sleeve 12 to rotate, and screw the nut onto the bolt. Detect the tightening force of the nut through the dynamic torque sensor 11. After tightening is completed, drive the twisting sleeve 12 to leave through the first electric push rod 7. Start testing and start the vibration motor 14. The vibration motor 14 applies horizontal high-frequency vibration to the gasket 6, the bolt and the nut through the platform 2 and the vibrating bodies 5 to detect the loosening performance of the fastener. Through the continuous impact of the impact block 24 of the reciprocating impact assembly on the platform 2, low-frequency vibration can be generated on the platform 2. The combined action of the low-frequency vibration and the high-frequency vibration on the fastener can truly simulate and restore the lateral vibration effect suffered by the fastener during actual use. By setting the adjustment assembly, the impact force of the impact block 24 on the platform 2 can also be adjusted.

[0039] Refer to Figure 3, the reciprocating impact assembly includes a box body 15 fixedly connected to the main body 1 of the testing machine. The first electric push rod 7 is fixedly connected to the top of the box body 15 through a support plate. A second motor 16 is fixedly connected to one side wall of the box body 15. The output shaft of the second motor 16 is fixedly connected to a second rotating shaft 17 rotatably connected to the box body 15. One end of the second rotating shaft 17 is fixedly connected to a round block 18. Two ejector posts 19 are arranged on the round block 18. Two T-shaped rods 20 are fixedly connected to the inner wall of the box body 15. A moving frame 21 is slidably connected to the outer walls of the two T-shaped rods 20. A first spring 22 sleeved on the outer side of the T-shaped rod 20 is fixedly connected between the moving frame 21 and the inner wall of the box body 15. A moving plate 23 is fixedly connected to the top of the moving frame 21. The moving plate 23 is located on the trajectory of the ejector post 19 rotating around the second rotating shaft 17. The impact block 24 is fixedly connected to the moving frame 21; when it is necessary to apply low-frequency vibration to the fastener, start the second motor 16. The second motor 16 drives the second rotating shaft 17 to rotate. The second rotating shaft 17 drives the round block 18 to rotate. The round block 18 drives the two ejector posts 19 to rotate. During the rotation of the ejector post 19, it will contact the moving plate 23. The ejector post 19 will push the moving plate 23 to move. The moving plate 23 drives the moving frame 21 and the impact block 24 to move, so that the impact block 24 moves away from the platform 2, and the first spring 22 is compressed. When the ejector post 19 continues to rotate and does not contact the moving plate 23, under the action of the first spring 22, the moving plate 23, the moving frame 21 and the impact block 24 suddenly move back, and the impact block 24 will hit the platform 2. Continuous impact can generate low-frequency lateral vibration, and the low-frequency lateral vibration acts on the fastener.

[0040] Refer to Figure 4 , the adjusting assembly includes a circular groove 25 opened in the round block 18. The ejector post 19 is slidably inserted into the circular groove 25. A second spring 26 is fixedly connected between one end of the ejector post 19 and the circular groove 25. A T-shaped channel 27 communicating with the two circular grooves 25 is opened in the round block 18. A circular ring block 28 is rotatably connected to one side wall of the round block 18. An inflatable tube 29 communicating with the T-shaped channel 27 is fixedly connected to the circular ring block 28. One end of the inflatable tube 29 is connected to an external inflating device; when it is necessary to adjust the impact force of the impact block 24, inflate the inflatable tube 29 through the external inflating device. Air enters the two circular grooves 25 through the inflatable tube 29 and the T-shaped channel 27. The increased air pressure in the circular grooves 25 can gradually push the ejector post 19 out of the circular groove 25, and the second spring 26 is stretched. The longer the ejector post 19 extends out of the circular groove 25, the longer the distance that can push the moving plate 23 and the impact block 24, and the shorter the first spring 22 is compressed. The greater the elastic potential energy obtained by the first spring 22, that is, the greater the force of the first spring 22 rebounding to make the impact block 24 hit the platform 2. When it is necessary to retract the ejector post 19 into the circular groove 25, part of the air in the circular groove 25 is released through the inflatable tube 29. Under the action of the second spring 26, the ejector post 19 is gradually inserted into the circular groove 25.

[0041] Referring to Figure 5 , a cavity 30 is formed in the impact block 24, and a plurality of third springs 31 are fixedly connected between the inner walls of the cavity 30. An impact ball 32 is fixedly connected between two corresponding third springs 31. When the impact block 24 impacts the platform 2, the impact block 24 is blocked and stops moving at the moment of contacting the platform 2. The impact ball 32 in the cavity 30 will impact the inner wall of the cavity 30 under the action of inertia, and the impact generates vibration. Different low-frequency vibrations can be generated under the action of the third springs 31. The vibration can be transmitted to the fastener through the platform 2 and the vibrating body 5 to further simulate the complex situation of lateral vibration in the real environment.

[0042] Referring to Figure 6 and Figure 7 , the automatic feeding assembly includes a second electric push rod 33 fixedly connected in the test machine main body 1. The output end of the second electric push rod 33 is fixedly connected with a telescopic sleeve 34. The top end of the telescopic sleeve 34 is fixedly connected with a magnet 35. A bolt arranged in the limit groove 403 is adsorbed on the top of the magnet 35. A round plate 36 is placed at the top end of the placement groove 401. A rotation prevention cylinder 37 is fixedly connected to the top of the round plate 36. A limiting groove 38 is formed in the rotation prevention cylinder 37. A round opening 39 is formed at the top of the rotation prevention cylinder 37. The twisting sleeve 12 is aligned with the gasket 6, the round opening 39 and the bolt. After the bolt is placed in the limit groove 403, the magnet 35 will adsorb the bolt. The second electric push rod 33 is started, and the second electric push rod 33 drives the telescopic sleeve 34 to move upward. The telescopic sleeve 34 drives the bolt to move upward through the magnet 35 and into the limiting groove 38 of the rotation prevention cylinder 37, so that the bolt passes through the round opening 39 of the rotation prevention cylinder 37. By continuously driving the bolt to move upward through the second electric push rod 33, the bolt can drive the rotation prevention cylinder 37 to move upward together until the top of the rotation prevention cylinder 37 contacts and fits with the bottom of the platform 2. At this time, the bolt passes through the gasket 6. After the test is completed, the bolt and the rotation prevention cylinder 37 are driven to move downward through the second electric push rod 33.

[0043] Referring to Figure 6 , Figure 7 and Figure 8, a locking assembly for locking the anti-rotation cylinder 37 is provided on the testing machine main body 1. The locking assembly includes a plug 51 and a socket 52 opened on the anti-rotation cylinder 37. The telescopic sleeve 34 includes a cylinder 40. A slot 41 is provided inside the cylinder 40. A plug post 42 is slidably inserted into the slot 41. A fourth spring 43 is fixedly connected between the bottom end of the plug post 42 and the inner wall of the slot 41. A fixing ring 44 is fixedly connected to the inner wall of the slot 41. A fixing rod 45 is fixedly connected to the outer wall of the cylinder 40. A rack 46 is fixedly connected to one end of the fixing rod 45. An avoidance opening for avoiding the fixing rod 45 and the rack 46 is opened in the testing machine main body 1. Two fixing plates 47 are fixedly connected to the top of the testing machine main body 1. A threaded rod 48 is rotatably connected between the two fixing plates 47. A gear 49 is fixedly connected to one end of the threaded rod 48. Part of the teeth of the gear 49 are directly above the teeth of the rack 46. An L-shaped plate 50 slidably connected to the top of the testing machine main body 1 is threadedly connected to the outer wall of the threaded rod 48. The plug 51 is fixedly connected to one end of the L-shaped plate 50; during the process that the second electric push rod 33 drives the bolt upward through the telescopic sleeve 34, the plug post 42 can keep the existing state to push the bolt and the anti-rotation cylinder 37 upward. When the anti-rotation cylinder 37 and the bolt move upward in place, the cylinder 40 will continue to move upward, the plug post 42 will be inserted into the slot 41, and the fourth spring 43 will be compressed until the bottom end of the plug post 42 abuts against the fixing ring 44. The upward movement of the cylinder 40 can drive the rack 46 upward through the fixing rod 45. The rack 46 moves upward in the avoidance opening. The rack 46 will engage with the gear 49 and drive the gear 49 to rotate. The gear 49 drives the threaded rod 48 to rotate. The threaded rod 48 drives the L-shaped plate 50 and the plug 51 to move, so that the plug 51 is inserted into the socket 52 to limit the anti-rotation cylinder 37 and prevent the anti-rotation cylinder 37 from rotating during the test.

[0044] Refer to Figure 2 and Figure 9 , an adaptation assembly for adapting to nuts of various sizes is provided on the twisting sleeve 12. The adaptation assembly includes two guide rods 53 slidably inserted on the twisting sleeve 12. A limit clamping plate 54 is fixedly connected to one end of the guide rod 53. A round head block 55 is fixedly connected to the other end of the guide rod 53. A fifth spring 56 sleeved outside the guide rod 53 is fixedly connected between the round head block 55 and the twisting sleeve 12; when the nut is placed into the twisting sleeve 12, the nut will squeeze the two limit clamping plates 54 to both sides. The limit clamping plates 54 can clamp and fix nuts of different sizes in the twisting sleeve 12, and the fifth spring 56 provides a clamping force for the nut.

[0045] Refer to Figure 9On the outer wall of the twisting sleeve 12, there is a conical limiting shell 57. An internal thread 58 is provided on the inner wall of the conical limiting shell 57. An external thread 59 adapted to the internal thread 58 is provided on the outer wall of the twisting sleeve 12. The conical limiting shell 57 and the twisting sleeve 12 are threadedly connected through the internal thread 58 and the external thread 59. A rotating block 60 is fixedly connected to the outer wall of the conical limiting shell 57; after the nut is limited within the twisting sleeve 12, rotate the rotating block 60, and the rotating block 60 can drive the conical limiting shell 57 to rotate. The conical limiting shell 57 rotates and descends on the surface of the twisting sleeve 12 through the internal thread 58 and the external thread 59, so that the conical limiting shell 57 contacts the two round head blocks 55, and the conical limiting shell 57 limits the round head blocks 55 to prevent the round head blocks 55 from moving randomly, thereby locking the nut.

[0046] Working principle: When in use, place the bolt to be detected in the placement groove 401. The bolt is located in the limiting groove 403 of the placement block 402. The bolt is automatically fed to the gasket 6 through the automatic feeding component, and the bolt passes through the gasket 6. Place the nut in the twisting sleeve 12. Start the first electric push rod 7 to drive the twisting sleeve 12 to move downward. The twisting sleeve 12 drives the nut to reach the bolt. Start the first motor 9. The first motor 9 drives the first rotating shaft 10, the dynamic torque sensor 11, and the twisting sleeve 12 to rotate, and screw the nut onto the bolt. Detect the tightening force of the nut through the dynamic torque sensor 11. After tightening is completed, drive the twisting sleeve 12 to leave through the first electric push rod 7. Then start testing. Start the vibration motor 14. The vibration motor 14 applies transverse high-frequency vibration to the gasket 6, bolt, and nut through the platform 2 and the vibrating body 5 to detect the relaxation performance of the fastener. Through the continuous impact of the impact block 24 of the reciprocating impact component on the platform 2, low-frequency vibration can be generated on the platform 2. The combined action of the low-frequency vibration and the high-frequency vibration acts on the fastener to truly simulate and restore the transverse vibration effect suffered by the fastener during actual use. By setting the adjustment component, the impact force of the impact block 24 on the platform 2 can also be adjusted; when it is necessary to apply low-frequency vibration to the fastener, start the second motor 16. The second motor 16 drives the second rotating shaft 17 to rotate. The second rotating shaft 17 drives the round block 18 to rotate. The round block 18 drives the two ejector posts 19 to rotate. During the rotation of the ejector posts 19, they will contact the moving plate 23, and the ejector posts 19 will push the moving plate 23 to move. The moving plate 23 drives the moving frame 21 and the impact block 24 to move, so that the impact block 24 moves away from the platform 2, and the first spring 22 is compressed. When the ejector posts 19 continue to rotate and are no longer in contact with the moving plate 23, under the action of the first spring 22, the moving plate 23, the moving frame 21, and the impact block 24 suddenly move back, and the impact block 24 will hit the platform 2. Continuous impact can generate low-frequency transverse vibration, and the low-frequency transverse vibration acts on the fastener; when it is necessary to adjust the impact force of the impact block 24, inflate the air into the air filling pipe 29 through an external air inflation device. The air enters the two round grooves 25 through the air filling pipe 29 and the T-shaped channel 27. The increased air pressure in the round grooves 25 can gradually push the ejector posts 19 out of the round grooves 25, and the second spring 26 is stretched. The longer the ejector posts 19 extend out of the round grooves 25, the longer the distance that can push the moving plate 23 and the impact block 24, and the shorter the first spring 22 is compressed. The greater the elastic potential energy obtained by the first spring 22, that is, the greater the force of the first spring 22 rebounding to make the impact block 24 hit the platform 2. When it is necessary to retract the ejector posts 19 into the round grooves 25, release some of the air in the round grooves 25 through the air filling pipe 29. Under the action of the second spring 26, the ejector posts 19 are gradually inserted into the round grooves 25;When the impact block 24 impacts the platform 2, the impact block 24 is blocked and stops moving the moment it contacts the platform 2. The impact ball 32 in the cavity 30 will impact the inner wall of the cavity 30 under the action of inertia. The impact generates vibration, and different low-frequency vibrations can be generated under the action of the third spring 31. The vibration can be transmitted to the fastener through the platform 2 and the vibrating body 5 to further simulate the complex situation of lateral vibration in the real environment. After placing the bolt in the limiting groove 403, the magnet 35 will adsorb the bolt. Start the second electric push rod 33, and the second electric push rod 33 drives the telescopic sleeve 34 to move upward. The telescopic sleeve 34 drives the bolt to move upward through the magnet 35 and into the limiting groove 38 of the anti-rotation cylinder 37, so that the bolt passes through the round opening 39 of the anti-rotation cylinder 37. Continue to drive the bolt to move upward through the second electric push rod 33. The bolt can drive the anti-rotation cylinder 37 to move upward together until the top of the anti-rotation cylinder 37 contacts and fits with the bottom of the platform 2. At this time, the bolt passes through the gasket 6. After the test is completed, drive the bolt and the anti-rotation cylinder 37 to move downward through the second electric push rod 33. During the process of the second electric push rod 33 driving the bolt to move upward through the telescopic sleeve 34, the insertion post 42 can maintain the existing state and push the bolt and the anti-rotation cylinder 37 to move upward. When the anti-rotation cylinder 37 and the bolt move upward in place, the cylinder 40 will continue to move upward, and the insertion post 42 will be inserted into the insertion slot 41. The fourth spring 43 is compressed until the bottom end of the insertion post 42 abuts against the fixed ring 44. The upward movement of the cylinder 40 can drive the rack 46 to move upward through the fixed rod 45. The rack 46 moves upward in the avoidance opening. The rack 46 will engage with the gear 49 and drive the gear 49 to rotate. The gear 49 drives the threaded rod 48 to rotate. The threaded rod 48 drives the L-shaped plate 50 and the insertion block 51 to move, so that the insertion block 51 is inserted into the insertion opening 52 to limit the anti-rotation cylinder 37 and prevent the anti-rotation cylinder 37 from rotating during the test. Place the nut into the twisting sleeve 12. The nut will squeeze the two limiting clamping plates 54 to both sides. The limiting clamping plates 54 can clamp and fix nuts of different sizes in the twisting sleeve 12. The fifth spring 56 provides a clamping force for the nut. When the nut is limited in the twisting sleeve 12, rotate the rotating block 60. The rotating block 60 can drive the conical limiting shell 57 to rotate. The conical limiting shell 57 rotates and descends on the surface of the twisting sleeve 12 through the internal thread 58 and the external thread 59, so that the conical limiting shell 57 contacts the two round head blocks 55, and the conical limiting shell 57 limits the round head blocks 55 to prevent the round head blocks 55 from moving randomly, thereby locking the nut.

[0047] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0048] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fastener lateral vibration testing machine, characterized in that: include: A testing machine body (1), a platform (2) is fixedly connected to the testing machine body (1), a notch (3) and a placement groove (401) are provided on the testing machine body (1), a placement block (402) is fixedly connected in the placement groove (401), a limit groove (403) is provided in the placement block (402), two vibrating bodies (5) are fixedly connected to the top of the platform (2), a gasket (6) is provided between the two vibrating bodies (5), and a first electric push rod (7) is provided directly above the gasket (6) ), the output end of the first electric push rod (7) is fixedly connected to a connection frame (8), a first motor (9) is fixedly connected inside the connection frame (8), the output shaft of the first motor (9) is fixedly connected to a first rotating shaft (10), the bottom end of the first rotating shaft (10) is fixedly connected to a dynamic torsion sensor (11), the bottom end of the dynamic torsion sensor (11) is fixedly connected to a torsion sleeve (12), the top of the platform (2) is fixedly connected to a connection plate (13), and a vibration motor (14) is fixedly connected to the connection plate (13); A reciprocating impact assembly, the reciprocating impact assembly is used to reciprocately impact the platform (2) to generate lateral low-frequency vibration, the reciprocating impact assembly comprises an impact block (24), the impact block (24) is in contact with a side wall of the platform (2); An adjustment component, the adjustment component is used to adjust the impact force of the impact block (24) on the platform (2); An automatic feeding assembly, the automatic feeding assembly is used to automatically feed the bolts to the gasket (6); The reciprocating impact assembly comprises a box (15) fixedly connected to a testing machine body (1); the first electric push rod (7) is fixedly connected to the top of the box (15) via a support plate; a second motor (16) is fixedly connected to a side wall of the box (15); an output shaft of the second motor (16) is fixedly connected to a second rotating shaft (17) rotatably connected to the box (15); a round block (18) is fixedly connected to one end of the second rotating shaft (17); two top columns (19) are arranged on the round block (18); and the box (15) is fixedly connected to a second rotating shaft (17) rotatably connected to the box (15). Two T-shaped rods (20) are fixedly connected to the inner wall of the box body (15); the outer walls of the two T-shaped rods (20) are slidably connected to a moving frame (21); a first spring (22) sleeved on the outside of the T-shaped rods (20) is fixedly connected between the moving frame (21) and the inner wall of the box body (15); a moving plate (23) is fixedly connected to the top of the moving frame (21); the moving plate (23) is located on the track of the top column (19) rotating around the second rotating shaft (17); and the impact block (24) is fixedly connected to the moving frame (21); The adjustment assembly comprises a circular groove (25) provided in the circular block (18), the top column (19) being slidably inserted in the circular groove (25), a second spring (26) being fixedly connected between one end of the top column (19) and the circular groove (25), a T-shaped channel (27) being provided in the circular block (18) and being connected to the two circular grooves (25), a circular ring block (28) being rotatably connected to one side wall of the circular block (18), an inflation tube (29) being fixedly connected to the circular ring block (28) and being connected to the T-shaped channel (27), and one end of the inflation tube (29) being connected to an external inflation device.

2. The fastener lateral vibration testing machine according to claim 1, characterized in that: A cavity (30) is provided in the impact block (24), a plurality of third springs (31) are fixedly connected between inner walls of the cavity (30), and an impact ball (32) is fixedly connected between corresponding two of the third springs (31).

3. The fastener lateral vibration testing machine according to claim 2, characterized in that: The automatic feeding assembly comprises a second electric push rod (33) fixedly connected to the testing machine body (1); a telescopic sleeve (34) is fixedly connected to the output end of the second electric push rod (33); a magnet (35) is fixedly connected to the top of the telescopic sleeve (34); a bolt arranged in a limiting groove (403) is attracted to the top of the magnet (35); a circular plate (36) is placed at the top of the placement groove (401); an anti-rotation cylinder (37) is fixedly connected to the top of the circular plate (36); a limiting groove (38) is provided in the anti-rotation cylinder (37); a circular opening (39) is provided at the top of the anti-rotation cylinder (37); and the twisting sleeve (12) is directly opposite to the gasket (6), the circular opening (39) and the bolt.

4. The fastener lateral vibration testing machine according to claim 3, characterized in that: The testing machine body (1) is provided with a locking assembly for locking the anti-rotation cylinder (37), the locking assembly comprising an insert block (51) and a socket (52) provided on the anti-rotation cylinder (37), the telescopic sleeve (34) comprising a cylinder (40), a slot (41) being provided in the cylinder (40), a plug post (42) being slidably inserted in the slot (41), a fourth spring (43) being fixedly connected between the bottom end of the plug post (42) and the inner wall of the slot (41), a fixing ring (44) being fixedly connected to the inner wall of the slot (41), a fixing rod (45) being fixedly connected to the outer wall of the cylinder (40), and a portion of the fixing rod (45) being fixedly connected to the outer wall of the cylinder (40). The end of the testing machine body (1) is fixedly connected with a rack (46), and an escape opening for avoiding the fixed rod (45) and the rack (46) is opened in the testing machine body (1). Two fixed plates (47) are fixedly connected to the top of the testing machine body (1), and a threaded rod (48) is rotatably connected between the two fixed plates (47). One end of the threaded rod (48) is fixedly connected with a gear (49), and part of the teeth of the gear (49) are located directly above the teeth of the rack (46). The outer wall of the threaded rod (48) is threadedly connected with an L-shaped plate (50) slidably connected to the top of the testing machine body (1), and the plug block (51) is fixedly connected to one end of the L-shaped plate (50).

5. The fastener lateral vibration testing machine according to claim 4, characterized in that: The twisting sleeve (12) is provided with an adapter assembly for adapting to nuts of various sizes, the adapter assembly comprising two guide rods (53) slidably inserted on the twisting sleeve (12), one end of the guide rod (53) being fixedly connected to a limit clamp (54), the other end of the guide rod (53) being fixedly connected to a round head block (55), and a fifth spring (56) sleeved on the outside of the guide rod (53) being fixedly connected between the round head block (55) and the twisting sleeve (12).

6. The fastener lateral vibration testing machine according to claim 5, characterized in that: The outer wall of the twisting sleeve (12) is provided with a conical limiting shell (57), the inner wall of the conical limiting shell (57) is provided with an internal thread (58), the outer wall of the twisting sleeve (12) is provided with an external thread (59) matching the internal thread (58), the conical limiting shell (57) and the twisting sleeve (12) are threadedly connected via the internal thread (58) and the external thread (59), and the outer wall of the conical limiting shell (57) is fixedly connected with a rotating block (60).

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