A vibration testing mechanism and its detection method

Abstract

The present invention relates to a vibration testing mechanism and its detection method; it includes a frame, the frame is provided with a mounting plate, the mounting plate is provided with a driving cylinder, the driving cylinder is provided with a push plate, the push plate is provided with a top plate and a detection device, the top plate is in transmission connection with the push plate through a tightening cylinder, the top plate is provided with a pressing guide sleeve, the detection device includes a clamping assembly and a vibration velocity transmitter, the clamping assembly is installed on the push plate, the vibration velocity transmitter is provided with a magnetic head that magnetically engages with the motor housing, and the vibration velocity transmitter is coaxially arranged with the pressing guide sleeve; the beneficial effects of the present invention are reflected in: by using the top plate to press and position the motor, the vibration velocity transmitter for detecting vibration is arranged on the clamping fingers, and during the positioning process of the motor, the vibration velocity transmitter is synchronously moved to the motor by the clamping fingers, and the vibration velocity transmitter is fixed to the motor by magnetic engagement through the magnetic head, enabling the vibration velocity transmitter to directly detect the vibration of the motor, avoiding the interfering vibration generated by other components and preventing detection distortion.

Description

Technical Field

[0001] The present invention relates to a detection mechanism, in particular to a vibration test mechanism and its detection method. Background Art

[0002] After the production of low-power motors is completed, it is often necessary to detect their vibration conditions to ensure the quality of the motors. However, the traditional method may be that inspectors use instruments to detect one by one. The detection steps are cumbersome. The manual detection method is time-consuming and laborious, prolonging the production cycle and increasing production costs. Currently, the automated detection devices on the market generally place the product in a product fixing seat, electrically connect the product to the test equipment, and at the same time set sensors for detecting the vibration of the motor on the fixing seat, so as to detect the vibration performance of the motor under different conditions. This testing method requires components such as jigs to transmit the vibration to the sensor, so that the sensor detects not only the vibration of the motor, but also the interfering vibration generated by components such as jigs, resulting in transmission distortion and inaccurate data reading. Summary of the Invention

[0003] In order to solve the above problems, the present invention aims to provide a detection mechanism, in particular to a vibration test mechanism and its detection method.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a vibration test mechanism, including a frame, an installation plate is provided on the frame, a driving cylinder is provided on the installation plate, a push plate is provided on the driving cylinder, a top plate and a detection device located behind the top plate are provided on the push plate, the top plate is in transmission connection with the push plate through a tightening cylinder, a pressing guide sleeve for pressing the motor is provided on the top plate, the detection device includes a clamping assembly and a vibration velocity transmitter provided on the clamping assembly, the clamping assembly is installed on the push plate, the vibration velocity transmitter is provided with a magnetic head that magnetically combines with the metal shell of the motor, the vibration velocity transmitter is coaxially arranged with the pressing guide sleeve, and is pushed into or pulled out of the pressing guide sleeve by the clamping assembly under the drive of the push plate.

[0005] Preferably, the clamping assembly includes a tightening cylinder and clamping fingers, the tightening cylinder is fixedly installed below the push plate, and the clamping fingers are in transmission connection with the tightening cylinder, so that the clamping fingers clamp or loosen the vibration velocity transmitter under the drive of the tightening cylinder.

[0006] Preferably, a fixing plate is provided on the push plate, and the tightening cylinder is fixedly installed on the fixing plate.

[0007] Preferably, a clamping ring is provided between the clamping fingers and the top plate, and the clamping ring is sleeved on the outer side of the vibration velocity transmitter to prevent displacement between the vibration velocity transmitter and the clamping fingers.

[0008] Preferably, a lifting cylinder is provided on the top of the frame, and the lifting cylinder is drivingly connected to the mounting plate via a transmission shaft, so that the mounting plate can be lifted and lowered on the frame.

[0009] Preferably, the frame is provided with a plurality of guide pillars, and the mounting plate is provided with a plurality of guide sleeves matched with the guide pillars, and the plurality of guide pillars and the plurality of guide sleeves are correspondingly slidably engaged to ensure the axial stability of the mounting plate during sliding.

[0010] Preferably, the top plate is provided with a positioning hole penetrating through its wall thickness, the positioning hole is coaxially arranged with the vibration velocity transmitter, and the clamping guide sleeve is provided with a guide groove, which is connected with the positioning hole so that the vibration velocity transmitter can extend into the guide groove of the clamping guide sleeve through the positioning hole.

[0011] A detection method for a vibration testing mechanism comprises the following steps:

[0012] (1) Descending: After detecting that the motor has reached the detection position, the lifting cylinder presses the mounting plate downward, causing the mounting plate to descend along the guide column to a height at which the motor can be detected;

[0013] (3) Vibration detection: when the top plate in step (2) is in place, the push plate simultaneously drives the clamping assembly to move toward the motor, so that the magnetic head and the vibration speed transmitter on the clamping finger are sequentially extended from the positioning hole of the top plate into the clamping guide sleeve, the magnetic head and the motor housing are magnetically fixed to each other, the motor is turned on, and the vibration data of the motor is detected by the vibration speed transmitter;

[0014] (3) After the material is removed and reset, the driving cylinder is started to reset the push plate in the opposite direction, and the pressing guide sleeve is pressed against the motor. As the push plate is reset, the clamping assembly pulls the magnetic head and the vibration speed transmitter out of the pressing guide sleeve. The magnetic head is separated from the motor under the action of the pressing guide sleeve to prevent the motor from being taken away by the magnetic head.

[0015] (4) The lifting cylinder drives the mounting plate to rise along the guide column to the starting height, completing a detection action.

[0016] Preferably, in the step (2), after the magnetic head and the vibration velocity transmitter are inserted into the clamping guide sleeve, the clamping fingers release the vibration velocity transmitter under the drive of the tensioning cylinder to avoid affecting the detection of the motor vibration data.

[0017] Preferably, in the step (3), after the detection is completed, the clamping fingers clamp the vibration velocity transmitter again under the drive of the tensioning cylinder, so that the vibration velocity transmitter is clamped and the magnetic head can be synchronously pulled out of the clamping guide sleeve by the clamping fingers through the reverse movement of the push plate.

[0018] The beneficial effects of the present invention are as follows: the present invention aims to provide a vibration testing mechanism and a detection method thereof, wherein a motor is pressed and positioned by using a top plate, a vibration velocity transmitter for detecting vibration is arranged on a clamping finger, and during the positioning process of the motor, the vibration velocity transmitter is synchronously moved to the motor by the clamping finger, and the vibration velocity transmitter is magnetically fixed to the motor through a magnetic head, so that the vibration velocity transmitter can directly detect the vibration of the motor, avoiding interfering vibrations generated by other components and preventing detection distortion. The structure is simple, and it is convenient for production and use, and the detection cycle is effectively shortened and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention in a non-detection state.

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention under the detection state.

[0021] Figure 3 It is a structural schematic diagram of the top plate of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the detection device of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the clamping assembly and the vibration velocity transmitter of the present invention in a loosened state.

[0024] Figure 6 It is a schematic diagram of the internal structure of the frame of the present invention.

[0025] Notes on the attached drawings:

[0026] 1-frame; 2-mounting plate; 3-driving cylinder; 4-push plate; 5-top plate; 6-detection device; 7-tightening cylinder; 8-pressing guide sleeve; 9-clamping assembly; 10-vibration speed transmitter; 11-magnetic head; 12-tension cylinder; 13-clamping finger; 14-fixing plate; 15-clamping ring; 16-lifting cylinder; 17-transmission shaft; 18-guide column; 19-guide sleeve; 20-positioning hole; 21-guide groove. DETAILED DESCRIPTION

[0027] In the following description, all concepts related to directionality or orientation such as up, down, left, right, front and back are with reference to the position states shown in the drawings being described, and therefore cannot be understood as a special limitation on the technical solution provided by the present invention.

[0028] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

[0029] As Figure 1-6 shown, a vibration testing mechanism includes a frame 1. The frame 1 is provided with a mounting plate 2. A driving cylinder 3 is provided on the mounting plate 2. The driving cylinder 3 is provided with a push plate 4. The push plate 4 is provided with a top plate 5 and a detection device 6 located behind the top plate 5. The top plate 5 is in transmission connection with the push plate 4 through a tightening cylinder 7. The top plate 5 is provided with a tightening guide sleeve 8 for tightening the motor. The detection device 6 includes a clamping assembly 9 and a vibration velocity transmitter 10 provided on the clamping assembly 9. The clamping assembly 9 is mounted on the push plate 4. The vibration velocity transmitter 10 is provided with a magnetic head 11 that magnetically engages with the metal shell of the motor. The vibration velocity transmitter 10 is coaxially arranged with the tightening guide sleeve 8, and is pushed into or pulled out of the tightening guide sleeve 8 by the clamping assembly 9 under the drive of the push plate 4.

[0030] Preferably, the clamping assembly 9 includes a tightening and loosening cylinder 12 and clamping fingers 13. The tightening and loosening cylinder is fixedly installed below the push plate 4. The clamping fingers 13 are in transmission connection with the tightening and loosening cylinder 12, so that the clamping fingers 13 clamp or loosen the vibration velocity transmitter 10 under the drive of the tightening and loosening cylinder 12.

[0031] Preferably, the push plate 4 is provided with a fixing plate 14. The tightening cylinder 7 is fixedly installed on the fixing plate 14.

[0032] Preferably, a clamping ring 15 is arranged between the clamping fingers 13 and the top plate 5. The clamping ring 15 is sleeved outside the vibration velocity transmitter 10 to prevent displacement between the vibration velocity transmitter 10 and the clamping fingers 13.

[0033] Preferably, a lifting cylinder 16 is provided at the top of the frame 1. The lifting cylinder 16 is in transmission connection with the mounting plate 2 through a transmission shaft 17, so that the mounting plate 2 can be lifted on the frame 1.

[0034] Preferably, the frame 1 is provided with a plurality of guide posts 18. The mounting plate 2 is provided with a plurality of guide sleeves 19 that cooperate with the guide posts 18. The plurality of guide posts 18 and the plurality of guide sleeves 19 are slidably clamped correspondingly to ensure the axial stability of the mounting plate 2 during the sliding process.

[0035] Preferably, the top plate 5 is provided with a positioning hole 20 penetrating through its wall thickness. The positioning hole 20 is coaxially arranged with the vibration velocity transmitter 10. The pressing guide sleeve 8 is provided with a guide groove 21. The guide groove 21 communicates with the positioning hole 20, so that the vibration velocity transmitter 10 can extend into the guide groove 21 of the pressing guide sleeve 8 through the positioning hole 20.

[0036] A detection method for a vibration testing mechanism includes the following steps:

[0037] (1) Lowering: After detecting that the motor reaches the detection position, the lifting cylinder 16 presses down the mounting plate 2, so that the mounting plate 2 descends along the guide post 18 to the height for detecting the motor.

[0038] (2) Vibration detection: When the top plate 5 in step (2) is in place, the push plate 4 drives the clamping assembly 9 to move towards the motor at the same time, so that the magnetic head 11 on the clamping finger 13 and the vibration velocity transmitter 10 sequentially extend into the pressing guide sleeve 8 from the positioning hole 20 of the top plate 5. The magnetic head 11 is magnetically coupled and fixed to the motor housing. The motor is turned on, and the vibration velocity transmitter 10 detects the motor vibration data.

[0039] (3) Unloading and resetting: After the detection is completed, the driving cylinder 3 is started to reset the push plate 4 in the reverse direction. The pressing guide sleeve 8 holds the motor against it. As the push plate 4 resets, the clamping assembly 9 pulls the magnetic head 11 and the vibration velocity transmitter 10 out of the pressing guide sleeve 8. By the action of the pressing guide sleeve 8, the separation of the magnetic head 11 from the motor is prevented, and the motor is prevented from being taken away by the magnetic head 11.

[0040] (4) Rising: The lifting cylinder 16 drives the mounting plate 2 to rise along the guide post 18 to the starting height, completing one detection action.

[0041] Preferably, in step (2), after the magnetic head 11 and the vibration velocity transmitter 10 extend into the pressing guide sleeve 8, the clamping finger 13 releases the vibration velocity transmitter 10 under the drive of the tightening and loosening cylinder 12, so as not to affect the detection of the motor vibration data.

[0042] Preferably, in step (3), after the detection is completed, the clamping finger 13 clamps the vibration velocity transmitter 10 again under the drive of the tightening and loosening cylinder 12, so that the vibration velocity transmitter 10 can be clamped and the magnetic head 11 can be synchronously pulled out of the pressing guide sleeve 8 by the clamping finger 13 through the reverse movement of the push plate 4.

[0043] A vibration testing mechanism of the present invention. When the motor reaches the specified test position, the lifting cylinder 16 on the frame 1 is activated. The lifting cylinder 16 pushes the mounting plate 2 downward through the transmission shaft 17, causing the mounting plate 2 to move downward along the axial direction of the guide post 18 through the guide sleeve 19. Driven by the mounting plate 2, the driving cylinder 3, the push plate 4, the top plate 5 and the detection device 6 mounted thereon are moved to the height for detecting the motor.

[0044] Further, when the mounting plate 2 moves to the detection height, the driving cylinder 3 is activated. The driving cylinder 3 pushes the push plate 4 towards the motor, and the top plate 5 and the detection device 6 mounted on the push plate 4 are also moved towards the motor. When the push plate 4 is pushed out to the maximum stroke, under the combined action of the clamping cylinder 7 and the driving cylinder 3, the pressing guide sleeve 8 on the top plate 5 is pressed tightly against the outer shell of the motor, thereby tightly fixing the motor.

[0045] Further, when the push plate 4 moves towards the motor, the clamping assembly 9 moves towards the motor synchronously with the push plate 4. The magnetic heads 11 and the vibration velocity transmitters 10 on the fingers 13 are driven by the fingers 13 to sequentially extend into the pressing guide sleeve 8 from the positioning holes 20 of the top plate 5. When the push plate 4 is pushed out to the maximum stroke, the magnetic heads 11 abut against the metal outer shell of the motor and are magnetically coupled and fixed with the metal outer shell of the motor. At this time, the fingers 13 are loosened from the vibration velocity transmitters 10 under the action of the tightening and loosening cylinder 12 to prevent affecting the detection of the motor vibration data.

[0046] Further, then the motor is powered on and works, and the vibration velocity transmitter 10 directly detects the vibration data of the working motor.

[0047] Further, after the detection is completed, the motor is powered off, and the driving cylinder 3 drives the push plate 4 to retreat and reset, so as to drive the clamping cylinder 7 and the top plate 5 to retreat synchronously, causing the pressing guide sleeve 8 on the top plate 5 to leave the motor. At the same time, after the detection is completed, under the drive of the tightening and loosening cylinder 12, the fingers 13 clamp the vibration velocity transmitters 10 again. During the process of the push plate 4 retreating and resetting, it drives the tightening and loosening cylinder 12 to retreat, and the fingers 13 pull the vibration velocity transmitters 10 and the magnetic heads 11 out of the pressing guide sleeve 8 in sequence. The pressing guide sleeve 8 abuts against the motor when resetting to prevent the motor from being taken away by the magnetic heads 11, so that the vibration velocity transmitters 10 and the magnetic heads 11 are separated from the top plate 5.

[0048] Further, the lifting cylinder 16 on the frame 1 is activated again, and the mounting plate 2 is pulled back along the guide post 18 to the starting preset height through the drive of the transmission shaft 17, so that the driving cylinder 3, the push plate 4, the top plate 5 and the detection device 6 arranged on the mounting plate 2 are reset to the height position in the non-detection state, completing a complete process of one detection.

[0049] The above are only the preferred embodiments of the present invention, and do not impose any limitation on the technical scope of the present invention. Those skilled in the art can make some deformations and modifications under the inspiration of this technical solution. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A vibration testing mechanism, characterized in that: The machine comprises a frame, the frame is provided with a mounting plate, the mounting plate is provided with a driving cylinder, the driving cylinder is provided with a push plate, the push plate is provided with a top plate and a detection device located behind the top plate, the top plate is transmission-connected with the push plate through a tightening cylinder, the top plate is provided with a clamping guide sleeve for tightening a motor, the detection device comprises a clamping assembly and a vibration speed transmitter arranged on the clamping assembly, the clamping assembly is mounted on the push plate, the vibration speed transmitter is provided with a magnetic head that is magnetically coupled with a metal shell of the motor, the vibration speed transmitter is coaxially arranged with the clamping guide sleeve, and is driven by the push plate. The clamping assembly pushes it into the clamping guide sleeve or pulls it out from the clamping guide sleeve. The clamping assembly includes a tensioning cylinder and clamping fingers. The tensioning cylinder is fixedly installed under the push plate. The clamping fingers are transmission-connected with the tensioning cylinder so that the clamping fingers can clamp or release the vibration velocity transmitter under the drive of the tensioning cylinder. A clamping ring is arranged between the clamping fingers and the top plate. The clamping ring is arranged on the outer side of the vibration velocity transmitter to prevent displacement between the vibration velocity transmitter and the clamping fingers. Each clamping finger is respectively provided with an extension portion downwardly, and an arc-shaped groove is respectively provided on the inner side of each extension portion.

2. The vibration testing mechanism according to claim 1, wherein: The push plate is provided with a fixing plate, and the tightening cylinder is fixedly mounted on the fixing plate.

3. The vibration testing mechanism according to claim 1, wherein: A lifting cylinder is arranged on the top of the frame, and the lifting cylinder is drivingly connected with the mounting plate through a transmission shaft, so that the mounting plate can be lifted and lowered on the frame.

4. The vibration testing mechanism according to claim 3, wherein: The frame is provided with a plurality of guide posts, and the mounting plate is provided with a plurality of guide sleeves matched with the guide posts. The plurality of guide posts and the plurality of guide sleeves are correspondingly slidably engaged to ensure the axial stability of the mounting plate during the sliding process.

5. The vibration testing mechanism according to claim 1, wherein: The top plate is provided with a positioning hole penetrating through its wall thickness, the positioning hole is coaxially arranged with the vibration velocity transmitter, and the clamping guide sleeve is provided with a guide groove, which is connected with the positioning hole so that the vibration velocity transmitter can extend into the guide groove of the clamping guide sleeve through the positioning hole.

6. The detection method of a vibration test mechanism according to claim 1, characterized in that: The following steps are involved: (1) Descending: After detecting that the motor has reached the detection position, the lifting cylinder presses the mounting plate downward, causing the mounting plate to descend along the guide column to a height at which the motor can be detected; (2) Vibration detection: when the top plate in step (2) is in place, the push plate simultaneously drives the clamping assembly to move toward the motor, so that the magnetic head and the vibration speed transmitter on the clamping finger are sequentially extended from the positioning hole of the top plate into the clamping guide sleeve, the magnetic head and the motor housing are magnetically fixed to each other, the motor is turned on, and the vibration data of the motor is detected by the vibration speed transmitter; (3) After the material is removed and reset, the driving cylinder is started to reset the push plate in the opposite direction, and the pressing guide sleeve is pressed against the motor. As the push plate is reset, the clamping assembly pulls the magnetic head and the vibration speed transmitter out of the pressing guide sleeve. The magnetic head is separated from the motor under the action of the pressing guide sleeve to prevent the motor from being taken away by the magnetic head. (4) The lifting cylinder drives the mounting plate to rise along the guide column to the starting height, completing a detection action.

7. The detection method of a vibration test mechanism according to claim 6, wherein: In the described step (2), after the magnetic head and the vibration velocity transmitter extend into the pressing guide sleeve, the clamping fingers release the vibration velocity transmitter under the drive of the tightening and loosening cylinder, so as not to affect the detection of the motor vibration data.

8. The detection method of a vibration test mechanism according to claim 6, characterized in that: In the described step (3), after the detection is completed, the clamping fingers clamp the vibration velocity transmitter again under the drive of the tightening and loosening cylinder, so that the vibration velocity transmitter can be clamped and the magnetic head can be synchronously pulled out of the pressing guide sleeve by the clamping fingers through the reverse movement of the push plate.

Images