Fastener transverse vibration testing machine

Abstract

The invention belongs to the technical field of fastener testing, and discloses a fastener transverse vibration testing machine. Comprising a testing machine main body, a platform is fixedly connected to the testing machine main body, and a notch and a placement groove are formed in the testing machine main body. The reciprocating impact assembly is arranged, in the transverse vibration process of the fastener, a vibration motor is started to apply transverse vibration to the fastener through a platform and a vibration body, the vibration is high-frequency vibration, a second motor is started to drive a round block and a jacking column to rotate, and the jacking column can push a moving plate and a moving frame to move in the rotating process; the first spring is compressed, when the jacking column does not make contact with the movable plate, the impact block suddenly impacts the platform under the action of the first spring, the jacking column rotates continuously so that the impact block can continuously impact the platform to generate vibration, the vibration is low-frequency rotation, and high-frequency vibration and low-frequency rotation jointly act on the fastener. And the anti-loosening performance of the fastener in a working environment can be simulated and restored as truly as possible.

Description

Technical Field

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

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

[0003] Existing vibration testing machines are mainly used to detect the anti-loosening performance of threaded fasteners when a lateral dynamic load of a certain frequency and displacement is applied. The equipment can analyze the change curves of the preload axial force, lateral displacement and lateral vibration period, so as to determine the anti-loosening characteristics of the threaded fasteners. Existing testing machines usually apply lateral vibration to the fasteners through a vibration motor.

[0004] At present, the vibration motor of the vibration testing machine can provide lateral vibrations of different frequencies for the fasteners, and the vibrations provided are all high-frequency vibrations. However, in the real environment, the fasteners must not only withstand high-frequency vibrations, but also low-frequency vibrations. The current vibration testing machine cannot provide a mixed irregular vibration effect of high-frequency vibrations and low-frequency vibrations, resulting in an inaccurate test of the anti-loosening performance of the fasteners. In addition, the current vibration testing machine is not convenient for automatic loading of fasteners, and the loading operation is relatively cumbersome. Summary of the invention

[0005] The present invention proposes a fastener lateral vibration testing machine to solve the problems in the background technology that the current vibration testing machine cannot provide a mixed irregular vibration effect of high-frequency vibration and low-frequency vibration and the current vibration testing machine is inconvenient to automatically feed fasteners.

[0006] To achieve the above object, the present invention provides the following technical solution: a fastener lateral vibration testing machine, comprising: A testing machine body, a platform is fixedly connected to the testing machine body, a notch and a placement slot are provided on the testing machine body, a placement block is fixedly connected in the placement slot, a limit slot is provided in the placement block, two vibrating bodies are fixedly connected to the top of the platform, a gasket is provided between the two vibrating bodies, a first electric push rod is provided directly above the gasket, a connecting frame is fixedly connected to the output end of the first electric push rod, a first motor is fixedly connected in the connecting frame, a first rotating shaft is fixedly connected to the output shaft of the first motor, a dynamic torsion sensor is fixedly connected to the bottom end of the first rotating shaft, a torsion sleeve is fixedly connected to the bottom end of the dynamic torsion sensor, a connecting plate is fixedly connected to the top of the platform, and a vibration motor is fixedly connected to the connecting plate; A reciprocating impact assembly, the reciprocating impact assembly is used to reciprocately impact the platform to generate lateral low-frequency vibration, the reciprocating impact assembly includes an impact block, and the impact block is in contact with a side wall of the platform; An adjusting component, the adjusting component is used to adjust the impact force of the impact block on the platform; Automatic feeding assembly, the automatic feeding assembly is used to automatically feed the bolts to the gaskets.

[0007] Furthermore, the reciprocating impact assembly includes a box body fixedly connected to the testing machine body, the first electric push rod is fixedly connected to the top of the box body through a support plate, a second motor is fixedly connected to one side wall of the box body, an output shaft of the second motor is fixedly connected to a second rotating shaft rotatably connected to the box body, one end of the second rotating shaft is fixedly connected to a round block, two top columns are arranged on the round block, two T-shaped rods are fixedly connected 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 mounted on the outside of the T-shaped rod is fixedly connected between the moving frame and the inner wall of the box body, a moving plate is fixedly connected to the top of the moving frame, the moving plate is located on the trajectory of the top column rotating around the second rotating shaft, and the impact block is fixed to the moving frame.

[0008] Furthermore, the adjustment component includes a circular groove opened in the round block, the top column is slidably inserted in the circular groove, a second spring is fixedly connected between one end of the top column and the circular groove, a T-shaped channel connected to 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 tube connected to the T-shaped channel is fixedly connected to the circular ring block, and one end of the inflation tube is connected to an external inflation device.

[0009] Furthermore, a cavity is provided in the impact block, a plurality of third springs are fixedly connected between inner walls of the cavity, and an impact ball is fixedly connected between corresponding two of the third springs.

[0010] Furthermore, the automatic loading assembly includes a second electric push rod fixedly connected to the main body of the testing machine, a telescopic sleeve is fixedly connected to the output end of the second electric push rod, a magnet is fixedly connected to the top of the telescopic sleeve, a bolt arranged in a limiting groove is adsorbed on the top of the magnet, a circular plate is placed on the top of the placement groove, an anti-rotation cylinder is fixedly connected to the top of the circular plate, a limiting groove is provided in the anti-rotation cylinder, a circular opening is provided on the top of the anti-rotation cylinder, and the torsion sleeve is opposite to the gasket, the circular opening and the bolt.

[0011] Furthermore, a locking assembly for locking the anti-rotation cylinder is provided on the testing machine body, the locking assembly includes an insert block and a socket opened on the anti-rotation cylinder, the telescopic sleeve includes a cylinder, a slot is provided in the cylinder, a plug column is slidably inserted in the slot, a fourth spring is fixedly connected between the bottom end of the plug column 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, one end of the fixing rod is fixedly connected to a rack, an avoidance opening for avoiding the fixing rod and the rack is opened in the testing machine body, two fixing plates are fixedly connected to the top of the testing machine body, a threaded rod is rotatably connected between the two fixing plates, a gear is fixedly connected to one end of the threaded rod, part of the teeth of the gear are located directly above the teeth of the rack, the outer wall of the threaded rod is threadedly connected to an L-shaped plate slidably connected to the top of the testing machine body, and the insert block is fixedly connected to one end of the L-shaped plate.

[0012] Furthermore, the torsion sleeve is provided with an adapter component for adapting to nuts of various sizes, the adapter component includes two guide rods slidably inserted on the torsion sleeve, one end of the guide rod is fixedly connected to a limiting clamp, the other end of the guide rod is fixedly connected to a round head block, and a fifth spring mounted on the outside of the guide rod is fixedly connected between the round head block and the torsion sleeve.

[0013] Furthermore, a conical limiting shell is provided on the outer wall of the torsion sleeve, an internal thread is provided on the inner wall of the conical limiting shell, an external thread matching the internal thread is provided on the outer wall of the torsion sleeve, the conical limiting shell and the torsion sleeve are threadedly connected via internal and external threads, and a rotating block is fixedly connected to the outer wall of the conical limiting shell.

[0014] The technical effects and advantages of the fastener lateral vibration testing machine of the present invention are as follows: (1) By setting a reciprocating impact component, during the process of 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 second rotating shaft to rotate. The second rotating shaft can drive the round block and the top column to rotate. The top column can push the moving plate and the moving frame to move during the rotation. The first spring is compressed, and the moving frame drives the impact block to be out of contact with the platform. When the top column is not in contact with the moving plate, the impact block will suddenly hit the platform under the action of the first spring, and the impact will generate vibration. The continuous rotation of the top column can make the impact block continuously hit the platform to generate vibration. This kind of vibration is low-frequency rotation. The high-frequency vibration and low-frequency rotation act on the fastener together, so as to achieve the most realistic simulation and restoration of the anti-loosening performance of the fastener in the working environment.

[0015] (2) By setting up an automatic loading component, the bolt to be tested is placed in the limit groove of the placement block. The bolt is attracted by the magnet, and the second electric push rod is started to drive the telescopic sleeve to move upward. The telescopic sleeve pushes the bolt into the limit groove of the upper anti-rotation cylinder. The bolt passes through the round mouth, so that the bolt continues to move upward to drive the anti-rotation cylinder to move upward until the top of the anti-rotation cylinder fits with the bottom of the platform. The bolt passes through the gasket, and the second electric push rod continues to push the telescopic sleeve. The cylinder moves upward, so that the plug column is gradually inserted into the slot until the bottom end of the plug column abuts against the fixing ring. The cylinder can drive the gear to rotate through the rack, and the gear drives the threaded rod to rotate. The threaded rod drives the plug block to be inserted into the socket of the anti-rotation cylinder through the L-shaped plate, thereby limiting the anti-rotation cylinder and preventing the anti-rotation cylinder from rotating during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the adapter component in the present invention; Figure 3 It is a schematic diagram of the reciprocating impact assembly in the present invention; Figure 4 It is a schematic diagram of the adjustment component in the present invention; Figure 5 It is a schematic diagram of the inner wall structure of the impact block in the present invention; Figure 6 It is a schematic diagram of the internal structure of the testing machine body in the present invention; Figure 7 It is a cross-sectional schematic diagram of the telescopic sleeve in the present invention; Figure 8 For the present invention Figure 6 The enlarged schematic diagram at A in the middle; Fig. 9 It is a schematic diagram of a local three-dimensional structure in the present invention.

[0017] In the figure: 1. Testing machine body; 2. Platform; 3. Notch; 401. Placement slot; 402. Placement block; 403. Limiting slot; 5. Vibrating body; 6. Gasket; 7. First electric push rod; 8. Connecting frame; 9. First motor; 10. First rotating shaft; 11. Dynamic torque sensor; 12. Torsion sleeve; 13. Connecting plate; 14. Vibrating motor; 15. Box; 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 slot; 26. Second spring; 27. T-shaped channel; 28. Ring block; 29. ​​Filling air pipe; 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 mouth; 40, cylinder; 41, slot; 42, plug column; 43, fourth spring; 44, fixing ring; 45, fixing rod; 46, rack; 47, fixing plate; 48, threaded rod; 49, gear; 50, L-shaped plate; 51, plug block; 52, socket; 53, guide rod; 54, limit clamp; 55, round head block; 56, fifth spring; 57, conical limit shell; 58, internal thread; 59, external thread; 60, rotary block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0019] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7 , a fastener lateral vibration testing machine, comprising: A testing machine body 1, on which a platform 2 is fixedly connected, 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, a first electric push rod 7 is provided directly above the gasket 6, an output end of the first electric push rod 7 is fixedly connected to a connecting frame 8, a first motor 9 is fixedly connected in the connecting frame 8, an output shaft of the first motor 9 is fixedly connected to a first rotating shaft 10, a dynamic torsion sensor 11 is fixedly connected to the bottom end of the first rotating shaft 10, a torsion sleeve 12 is fixedly connected to the bottom end of the dynamic torsion 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; A reciprocating impact assembly, which is used to reciprocate and impact the platform 2 to generate lateral low-frequency vibrations. The reciprocating impact assembly includes an impact block 24, and the impact block 24 is in contact with a side wall of the platform 2; An adjusting component, which is used to adjust the impact force of the impact block 24 on the platform 2; An automatic feeding assembly, which is used to automatically feed the bolts to the gasket 6; When in use, place the bolt to be detected in the placement groove 401, the bolt is in the limit groove 403 of the placement block 402, and the bolt is automatically fed to the gasket 6 through the automatic feeding assembly, so that the bolt passes through the gasket 6, and the nut is set in the torsion sleeve 12, and the first electric push rod 7 is started to drive the torsion sleeve 12 to move downward, and the torsion sleeve 12 drives the nut to reach the bolt, and the first motor 9 is started. The first motor 9 drives the first rotating shaft 10, the dynamic torsion sensor 11 and the torsion sleeve 12 to rotate, and the nut is screwed on the bolt, and the tightening force of the nut is detected by the dynamic torsion sensor 11, and the tightening is completed. After completion, the torsion sleeve 12 is driven to leave by the first electric push rod 7, and the vibration motor 14 is started for testing. The vibration motor 14 applies lateral high-frequency vibration to the gasket 6, bolts and nuts through the platform 2 and the vibrating body 5 to detect the relaxation performance of the fasteners. The continuous impact of the impact block 24 of the reciprocating impact assembly on the platform 2 can generate low-frequency vibration on the platform 2. The low-frequency vibration and high-frequency vibration act on the fasteners in a mixed manner, so as to truly simulate and restore the lateral vibration effect that the fasteners are subjected to during actual use. By setting the adjustment component, the impact force of the impact block 24 on the platform 2 can also be adjusted.

[0020] Reference Figure 3The reciprocating impact assembly includes a box body 15 fixedly connected to the test machine body 1, 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, 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, two T-shaped rods 20 are fixedly connected to the inner wall of the box body 15, and 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 outside 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, and the moving plate 23 is located on the track where the top column 19 rotates around the second rotating shaft 17 In the embodiment, the impact block 24 is fixedly connected to the moving frame 21; when it is necessary to apply low-frequency vibration to the fastener, the second motor 16 is started, 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 top columns 19 to rotate, the top column 19 will contact the moving plate 23 during the rotation, the top column 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 is away from the platform 2, the first spring 22 is compressed, when the top column 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, the impact block 24 will hit the platform 2, and the continuous impact can generate low-frequency lateral vibration, and the low-frequency lateral vibration acts on the fastener.

[0021] Reference Figure 4 The adjusting assembly includes a circular groove 25 provided in the circular block 18, the top column 19 is slidably inserted in the circular groove 25, a second spring 26 is fixedly connected between one end of the top column 19 and the circular groove 25, a T-shaped channel 27 communicating with the two circular grooves 25 is provided in the circular block 18, a circular ring block 28 is rotatably connected to one side wall of the circular block 18, an inflatable tube 29 communicating with the T-shaped channel 27 is fixedly connected to the circular ring block 28, and one end of the inflatable tube 29 is connected to an external inflatable device; when it is necessary to adjust the impact force of the rotating impact block 24, air is inflated into the inflatable tube 29 through the external inflatable device, and the air passes through the inflatable tube 29 and The T-shaped channel 27 enters the two circular grooves 25, and the air pressure in the circular grooves 25 increases, which can gradually push the top column 19 out of the circular grooves 25. The second spring 26 is stretched, and the longer the distance that the top column 19 extends out of the circular grooves 25, the longer the distance that the movable plate 23 and the impact block 24 can be pushed. 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 with which the first spring 22 rebounds to make the impact block 24 hit the platform 2. When it is necessary to retract the top column 19 into the circular groove 25, part of the air in the circular groove 25 is released through the inflation tube 29, and under the action of the second spring 26, the top column 19 is gradually inserted into the circular groove 25.

[0022] Reference Figure 5 A cavity 30 is provided in the impact block 24, and a plurality of third springs 31 are fixedly connected between the inner walls of the cavity 30, and 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, and 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 will generate vibration. Different low-frequency vibrations can be generated under the action of the third spring 31, and the vibration can be transmitted to the fastener through the platform 2 and the vibration body 5, further simulating the complex situation of lateral vibration in the real environment.

[0023] Reference Figure 6 and Figure 7 The automatic feeding assembly includes 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 adsorbed on the top of the magnet 35, a circular plate 36 is placed on 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 round mouth 39 is provided on the top of the anti-rotation cylinder 37, and the torsion sleeve 12 is opposite to the gasket 6, the round mouth 39 and the bolt; the bolt is placed in the limiting groove 401. After the bolt is positioned in the slot 403, the magnet 35 will absorb the bolt and start the second electric push rod 33. 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 enters the limiting slot 38 of the anti-rotation cylinder 37, so that the bolt passes through the circular opening 39 of the anti-rotation cylinder 37. The second electric push rod 33 continues to drive the bolt to move upward. 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, the bolt and the anti-rotation cylinder 37 are driven downward by the second electric push rod 33.

[0024] Reference Figure 6 , Figure 7 and Figure 8The testing machine body 1 is provided with a locking assembly for locking the anti-rotation cylinder 37, the locking assembly includes an insert block 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 in the cylinder 40, a plug column 42 is slidably inserted in the slot 41, a fourth spring 43 is fixedly connected between the bottom end of the plug column 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, and an avoidance opening for avoiding the fixing rod 45 and the rack 46 is opened in the testing machine body 1, two fixing plates 47 are fixedly connected to the top of the testing machine 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 located directly above the teeth of the rack 46, and the threaded rod 48 is fixedly connected to the outer wall of the cylinder 40. The outer wall is threadedly connected with an L-shaped plate 50 which is 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; when the second electric push rod 33 drives the bolt to move upward through the telescopic sleeve 34, the plug column 42 maintains the existing state to push the bolt and the anti-rotation cylinder 37 to move upward. When the anti-rotation cylinder 37 and the bolt move upward to the right position, the cylinder 40 will continue to move upward, and the plug column 42 will be inserted into the slot 41, and the fourth spring 43 will be compressed until the bottom end of the plug column 42 abuts against the fixing ring 44. The upward movement of the cylinder 40 can drive the rack 46 to move upward through the fixing rod 45, and the rack 46 moves upward in the avoidance opening. The rack 46 will mesh with the gear 49 and drive the gear 49 to rotate. The gear 49 drives the threaded rod 48 to rotate, and the threaded rod 48 drives the L-shaped plate 50 and the plug block 51 to move, so that the plug block 51 is inserted into the socket 52 to limit the anti-rotation cylinder 37 to prevent the anti-rotation cylinder 37 from rotating during the test.

[0025] Reference Figure 2 and Fig. 9 The torsion sleeve 12 is provided with an adapter component for adapting to nuts of various sizes, and the adapter component includes two guide rods 53 slidably inserted on the torsion sleeve 12, one end of the guide rod 53 is fixedly connected to a limiting clamp 54, and the other end of the guide rod 53 is fixedly connected to a round head block 55, and a fifth spring 56 sleeved on the outside of the guide rod 53 is fixedly connected between the round head block 55 and the torsion sleeve 12; when the nut is placed in the torsion sleeve 12, the nut will squeeze the two limiting clamps 54 to both sides, and the limiting clamps 54 can clamp nuts of different sizes and fix them in the torsion sleeve 12, and the fifth spring 56 provides clamping force for the nut.

[0026] Reference Fig. 9The outer wall of the torsion 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 torsion sleeve 12 is provided with an external thread 59 matched with the internal thread 58, the conical limiting shell 57 and the torsion sleeve 12 are threadedly connected through the internal thread 58 and the external thread 59, and the outer wall of the conical limiting shell 57 is fixedly connected with a rotary block 60; when the nut is limited in the torsion sleeve 12, the rotary block 60 is rotated, and the rotary block 60 can drive the conical limiting shell 57 to rotate, and the conical limiting shell 57 rotates and descends on the surface of the torsion sleeve 12 through the internal thread 58 and the external thread 59, so that the conical limiting shell 57 contacts with the two round head blocks 55, so that the conical limiting shell 57 limits the round head block 55 to prevent the round head block 55 from moving at will, thereby locking the nut.

[0027] Working principle: When in use, place the bolt to be detected in the placement groove 401, the bolt is in the limit groove 403 of the placement block 402, and the bolt is automatically fed to the gasket 6 through the automatic feeding assembly, so that the bolt passes through the gasket 6, and the nut is set in the torsion sleeve 12, and the first electric push rod 7 is started to drive the torsion sleeve 12 to move downward, and the torsion sleeve 12 drives the nut to reach the bolt, and the first motor 9 is started. The first motor 9 drives the first rotating shaft 10, the dynamic torsion sensor 11 and the torsion sleeve 12 to rotate, and the nut is screwed on the bolt. The tightening force of the nut is detected by the dynamic torsion sensor 11. After the tightening is completed, the torsion sleeve 12 is driven to leave by the first electric push rod 7, and the torsion sleeve 12 is opened. The vibration motor 14 is started at the beginning of the test. The vibration motor 14 applies lateral high-frequency vibration to the gasket 6, the bolt and the nut through the platform 2 and the vibrating body 5 to detect the loosening performance of the fastener. The impact block 24 of the reciprocating impact assembly continuously impacts the platform 2, which can generate low-frequency vibration on the platform 2. The low-frequency vibration and the high-frequency vibration act on the fastener in a mixed manner, so as to truly simulate and restore the lateral vibration effect that the fastener is subjected to during actual use. By setting the adjustment assembly, the impact strength 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, the second motor 16 is started, and the second motor 16 drives the second rotating shaft 17 to rotate, and the second rotating shaft 17 drives the round block 18 The round block 18 rotates, and the two top columns 19 rotate. The top columns 19 will contact the moving plate 23 during the rotation, and the top columns 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 is away from the platform 2, and the first spring 22 is compressed. When the top column 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. The continuous impact can generate low-frequency lateral vibration, which acts on the fastener; when it is necessary to adjust the impact force of the rotating impact block 24, the inflatable tube 2 is inflated by an external inflating device. 9 is inflated, and the air enters the two circular grooves 25 through the inflation tube 29 and the T-shaped channel 27. The air pressure in the circular groove 25 increases and the top column 19 can be gradually pushed out of the circular groove 25. The second spring 26 is stretched. The longer the distance that the top column 19 extends out of the circular groove 25, the longer the distance that the movable plate 23 and the impact block 24 can be pushed. 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 impact block 24 hitting the platform 2 when the first spring 22 rebounds. When it is necessary to retract the top column 19 into the circular groove 25, part of the air in the circular groove 25 is released through the inflation tube 29. Under the action of the second spring 26, the top column 19 is gradually inserted into the circular groove 25;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, and 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 will generate vibration. Under the action of the third spring 31, different low-frequency vibrations can be generated, and the vibration can be transmitted to the fastener through the platform 2 and the vibrating body 5, further simulating the complex situation of lateral vibration in the real environment; after the bolt is placed in the limit groove 403, the magnet 35 will absorb the bolt, start the second electric push rod 33, and the second electric push rod 33 will drive the telescopic sleeve 34 to move upward, and the telescopic sleeve 34 will move upward. The bolt is driven upward by the magnet 35 to enter 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, and the second electric push rod 33 continues to drive the bolt upward, and 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, the bolt and the anti-rotation cylinder 37 are driven downward by 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 plug post 42 maintains the existing state to push the bolt and the anti-rotation cylinder 37 to move upward. After the bolt 7 and the cylinder 40 move upward into place, the cylinder 40 will continue to move upward, the plug post 42 will be inserted into the slot 41, the fourth spring 43 will be compressed until the bottom end of the plug post 42 abuts against the fixing ring 44, the cylinder 40 can move upward through the fixing rod 45 to drive the rack 46 to move upward, the rack 46 moves upward in the avoidance opening, the rack 46 will mesh 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 block 51 to move, so that the plug block 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; the screw The nut is placed in the twist sleeve 12, and the nut will squeeze the two limit clamps 54 to both sides. The limit clamps 54 can clamp nuts of different sizes in the twist sleeve 12, and the fifth spring 56 provides clamping force for the nut; when the nut is limited in the twist sleeve 12, the rotary block 60 is rotated, and the rotary block 60 can drive the conical limit shell 57 to rotate. The conical limit shell 57 rotates and descends on the surface of the twist sleeve 12 through the internal thread 58 and the external thread 59, so that the conical limit shell 57 contacts the two round head blocks 55, so that the conical limit shell 57 limits the round head blocks 55 to prevent the round head blocks 55 from moving at will, thereby locking the nut. ;

[0028] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0029] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in 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); The automatic feeding assembly is used to automatically feed the bolts to the gasket (6).

2. The fastener lateral vibration testing machine according to claim 1, characterized in that: 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).

3. The fastener lateral vibration testing machine according to claim 2, characterized in that: 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.

4. The fastener lateral vibration testing machine according to claim 3, 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).

5. The fastener lateral vibration testing machine according to claim 4, 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.

6. The fastener lateral vibration testing machine according to claim 5, 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).

7. The fastener lateral vibration testing machine according to claim 6, 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).

8. The fastener lateral vibration testing machine according to claim 7, 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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