Motor online monitoring device

Abstract

The present invention relates to the technical field of motor monitoring devices, and specifically to an online monitoring device for motors, comprising a workbench, a support column is fixedly installed on the top of the workbench, a detection frame that can be moved up and down is arranged on one side of the support column, a detection box that can be moved up and down is arranged on the inner side of the detection frame, a calibration mechanism is arranged on the inner side of the detection frame, a pressure rod that can be moved up and down is elastically arranged on the inner side of the detection box, a limit plate is fixedly installed on one side of the pressure rod, an amplitude detection mechanism is arranged on one side of the limit plate, and a frequency detection mechanism is arranged on the inner side of the detection box; the present invention adopts the cooperation of the calibration mechanism and the amplitude detection mechanism, the farthest distance that the movable sleeve moves is the maximum amplitude of the motor to be measured, and the principle of screw micrometry is utilized, that is, the rotating sleeve rotates one circle under the action of the thread, and the rotating sleeve moves a short distance to the right along the surface of the threaded sleeve, so that the maximum amplitude of the motor to be measured can be accurately measured.

Description

Technical Field

[0001] The invention relates to the technical field of motor monitoring devices, in particular to an online motor monitoring device. Background Art

[0002] The online motor monitoring device is a device used to monitor the operating status of the motor in real time. It aims to ensure the efficient and stable operation of the motor, detect potential faults in time, reduce downtime, and improve equipment reliability and maintenance efficiency. Its main function is to collect various operating data of the motor through sensors and monitoring technology, and analyze and process them to help users achieve health management of the motor. The vibration monitoring device monitors the vibration of the motor and its related equipment, and determines whether there is a mechanical fault through the vibration signal, such as imbalance, poor alignment, wear and other problems.

[0003] A Chinese patent with announcement number CN118226255B discloses a motor detection device, including a counterweight assembly, a moving mechanism that pushes the motor to be detected to move toward the counterweight assembly, and an elliptical counterweight plate. The invention realizes eccentric load detection by making the center of gravity of the counterweight assembly deviate from the center of the transmission shaft through the mutual cooperation between the counterweight assembly, the locking assembly, the limit assembly, the clamping assembly and the moving mechanism, and then controlling the operation of the motor to be detected.

[0004] A Chinese patent with announcement number CN117148148B discloses a vibration platform for automatic testing of vibration motors, including a platform body and a vibration motor body installed on the top of the platform body. Through a locking mechanism, the extrusion plate can be inserted into the perforation of the fixing strip in an inclined upwardly opened state, so that the vibration motor can be fixed on the platform body, thereby achieving a quick fixing effect.

[0005] The existing technology mainly detects the maximum amplitude of motor vibration through measurement by traditional sensors such as acceleration sensors, velocity sensors, and displacement sensors, and analyzes them in combination with data acquisition, signal processing, spectrum analysis, etc. Although these methods can provide maximum amplitude detection to a certain extent, they still have insufficient sensitivity, especially when affected by the vibration of the motor, which will reduce the accuracy of the maximum amplitude detection of the motor and easily mislead the staff's judgment results on the motor. In addition, most of the existing technologies only detect the vibration amplitude of the motor, and it is difficult to effectively detect the vibration frequency of the motor at the same time, which reduces the detection efficiency.

[0006] Therefore, the present invention provides an online monitoring device for a motor that can accurately detect the maximum amplitude of the motor and the vibration frequency at the same time. Summary of the invention

[0007] In view of the problems in the prior art that the accuracy of detecting the maximum amplitude of the motor is reduced due to the vibration of the motor, and it is difficult to detect the vibration frequency at the same time, an online monitoring device for the motor is designed.

[0008] The technical solution adopted by the present invention to solve its technical problem is: an online monitoring device for a motor comprises a workbench, a support column is fixedly installed on the top of the workbench, a motor to be tested is fixedly placed on the top of the workbench, a detection frame that can be moved up and down is arranged on one side of the support column, a detection box that can be moved up and down is arranged on the inner side of the detection frame, a calibration mechanism is arranged on the inner side of the detection frame, the calibration mechanism comprises a double-toothed plate that can be moved up and down, and the double-toothed plate is fixedly installed on one side of the detection box close to the support column, a pressure rod that can be moved up and down is elastically arranged on the inner side of the detection box, a limit plate is fixedly installed on one side of the pressure rod, an amplitude detection mechanism is arranged on one side of the limit plate, and the amplitude detection mechanism The amplitude detection mechanism includes a rotatable rotary sleeve, a screw is fixedly installed on the inner side of the rotary sleeve, a threaded sleeve is threadedly connected to the outer side of the screw, a frequency detection mechanism is arranged on the inner side of the detection box, the frequency detection mechanism includes an elastically arranged lower pressure sleeve, a resistance rod is fixedly installed on the inner side of the lower pressure sleeve, and a rotatable spiral rod is arranged on the inner side of the detection box; a calibration mechanism is equipped to adjust the position of the pressure rod for calibration; an amplitude detection mechanism is equipped to detect the vibration amplitude of the motor to be tested by detecting the rotating rotary sleeve and the fixed threaded sleeve; a frequency detection mechanism is equipped to calculate the vibration frequency of the motor to be tested by the number of times the lower pressure sleeve moves up and down per unit time.

[0009] Furthermore, a telescopic rod is fixedly installed on the top of the support column, the detection frame is slidingly connected to the support column, the side of the detection frame close to the support column is fixedly connected to the output end of the telescopic rod through a fixed plate, and a through hole is opened through the bottom of the detection frame.

[0010] Furthermore, the calibration mechanism also includes two rotating shafts, which are respectively installed in the interior of the detection frame through bearings, a worm wheel is fixedly installed on the outer side of the rotating shaft, a transmission tooth is fixedly installed on the end of the rotating shaft away from the support column, and the transmission tooth is meshed with the double tooth plate, a worm is installed in the interior of the detection frame through bearings, two threads in opposite directions are provided on the surface of the worm, and the worm is meshed with two worm wheels, rockers are respectively fixedly installed at both ends of the worm, and the two rockers are respectively located on both sides of the detection frame.

[0011] Furthermore, a column groove is provided at the bottom of the detection box, a limiting hole is provided on the side of the detection box away from the supporting column, and the limiting hole is communicated with the column groove, a telescopic hole is provided on the inner side of the bottom wall of the limiting hole, a placement groove is provided on the side of the detection box away from the supporting column, the placement groove is located at the bottom of the limiting hole, and the placement groove is communicated with the telescopic hole, and a protective cover is fixedly installed on the side of the detection box away from the supporting column, and the protective cover is located on one side of the limiting hole.

[0012] Furthermore, one end of a thick spring is fixedly installed on the inner side of the top wall of the column groove, and the other end of the thick spring is fixedly connected to the top of the pressure rod. Part of the pressure rod is located on the inner side of the column groove, the pressure rod is located on the inner side of the through hole, the limit plate is located on the inner side of the limit hole, and a toothed plate is fixedly installed on the side of the limit plate away from the pressure rod, and the toothed plate is located on the side of the detection box away from the support column.

[0013] Furthermore, the amplitude detection mechanism also includes a gear rod, and two support plates are fixedly installed on the side of the detection box away from the support column. The two support plates are respectively located on both sides of the limiting hole, and the two support plates are rotatably connected to the gear rod through bearings, the gear rod is meshed with the gear plate, a square rod is fixedly installed on one end of the gear rod, and part of the square rod passes through one side of the rotary sleeve, the square rod is slidably connected to the rotary sleeve, and the threaded sleeve is fixedly installed on the side of the detection box away from the support column through a support member, the surface of the rotary sleeve is engraved with scales, the axial surface of the threaded sleeve is engraved with another scale, and a movable ring is slidably installed on the outer side of the threaded sleeve.

[0014] Furthermore, one end of a spring is fixedly installed on the inner side of the telescopic hole, and the other end of the spring is fixedly installed on the bottom of the lower pressure sleeve. A spiral groove is opened on the surface of the spiral rod, and the part of the spiral rod with the spiral groove is located on the inner side of the lower pressure sleeve, the resistance rod is located on the inner side of the thread groove, and a one-way gear disk is fixedly installed on the bottom of the spiral rod.

[0015] Furthermore, a counter is placed on the inner side of the placement groove, a square input end is rotatably installed on the top of the counter, a one-way gear disc 2 is slidably installed on the outer side of the input end, and the one-way gear disc 2 is meshed with the one-way gear disc 1, and one end of a spring 2 is fixedly installed on the top of the counter, and the other end of the spring 2 is in contact with the bottom of the one-way gear disc 2.

[0016] Beneficial effects of the present invention:

[0017] (1) The online monitoring device for the motor described in the present invention adopts the cooperation of the calibration mechanism and the amplitude detection mechanism. When the motor to be tested vibrates upward, it can drive the rotary sleeve to rotate and move to the right, so that the rotary sleeve drives the movable sleeve to push to the right. The farthest distance the movable sleeve moves is the maximum amplitude of the motor to be tested. The surfaces of the rotary sleeve and the threaded sleeve are engraved with scales. The principle of screw micrometry is used, that is, the rotary sleeve rotates one circle under the action of the thread, and the rotary sleeve moves a short distance to the right along the surface of the threaded sleeve. Since the moving direction of the movable sleeve is perpendicular to the vibration direction of the motor to be tested, the influence of the vibration of the motor to be tested can be reduced, so that the maximum amplitude of the motor to be tested can be accurately measured.

[0018] (2) The online monitoring device for the motor described in the present invention adopts the cooperation of the limit plate and the amplitude detection mechanism. When the motor to be tested vibrates up and down, the limit plate is driven to move up and down, so that the lower pressure sleeve moves up and down under the joint action of the spring 1 and the limit plate. At the same time, the one-way limit rotation function of the one-way gear disc 1 and the one-way gear disc 2 is utilized, so that the input end of the counter rotates one circle each time the motor to be tested vibrates up and down, thereby detecting the vibration frequency of the motor to be tested and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the monitoring device of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the back side of the monitoring device of the present invention;

[0022] Figure 3 is a schematic diagram of the three-dimensional structure of the detection frame of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the back side of the detection box of the present invention;

[0024] Figure 5 is a schematic diagram of a cross-sectional three-dimensional structure of a detection frame of the present invention;

[0025] Figure 6 It is a cross-sectional three-dimensional structural schematic diagram of the detection box of the present invention;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the pressure rod of the present invention;

[0027] Figure 8 It is a schematic diagram of the explosion cross-section stereoscopic structure of the amplitude detection mechanism of the present invention;

[0028] Fig. 9 It is a schematic diagram of the exploded cross-section stereoscopic structure of the frequency detection mechanism of the present invention.

[0029] In the figure: 1, workbench; 2, support column; 3, telescopic rod; 4, detection frame; 5, through hole; 6, detection box; 7, calibration mechanism; 701, rotating shaft; 702, worm gear; 703, transmission gear; 704, double tooth plate; 705, worm; 706, rocker; 8, column slot; 9, limit hole; 10, telescopic hole; 11, placement slot; 12, protective cover; 13, thick spring; 14, pressure rod; 15, limit plate; 16, amplitude detection mechanism; 1601 , gear rod; 1602, square rod; 1603, rotary sleeve; 1604, screw rod; 1605, threaded sleeve; 1606, movable ring; 17, frequency detection mechanism; 1701, lower pressure sleeve; 1702, spring one; 1703, resistance rod; 1704, screw rod; 1705, one-way gear disc one; 1706, one-way gear disc two; 1707, spring two; 1708, counter; 1709, input end; 18, motor to be tested; 19, gear plate. DETAILED DESCRIPTION

[0030] In order to make the technical means, technical features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] Example: Figure 1-Figure 9 As shown, the online monitoring device for a motor described in the present invention comprises a workbench 1, a support column 2 is fixedly installed on the top of the workbench 1, a motor to be tested 18 is fixedly placed on the top of the workbench 1, a detection frame 4 that can move up and down is provided on one side of the support column 2, a telescopic rod 3 is fixedly installed on the top of the support column 2, the detection frame 4 is connected to the support column 2 in a limited sliding manner, the side of the detection frame 4 close to the support column 2 is fixedly connected to the output end of the telescopic rod 3 through a fixed plate, and a through hole 5 is opened through the bottom of the detection frame 4.

[0032] Specifically, the workbench 1 can provide stable support for the support column 2, and at the same time, the workbench 1 can provide a fixed space for the motor 18 to be tested, so that the staff can fix and disassemble the motor 18 to be tested on the top of the workbench 1 conveniently. The support column 2 can provide stable support for the telescopic rod 3, and can provide a through space for the output end of the telescopic rod 3. The telescopic rod 3 can provide support for the detection frame 4, and can provide power for the detection frame 4 to move up and down. The support column 2 can provide a limiting function for the detection frame 4, and can ensure that the limiting frame can slide up and down in the vertical direction. The detection frame 4 can provide an opening space for the through hole 5, and the through hole 5 can provide a moving space for the pressure rod 14, so that the pressure rod 14 can pass through the through hole 5 and contact the motor 18 to be tested.

[0033] In this embodiment, a detection box 6 that can be moved up and down is provided on the inner side of the detection frame 4, and a calibration mechanism 7 is provided on the inner side of the detection frame 4. The calibration mechanism 7 is equipped to adjust the position of the pressure rod 14 for calibration. The calibration mechanism 7 includes a double-toothed plate 704 that can be moved up and down, and the double-toothed plate 704 is fixedly installed on the side of the detection box 6 close to the support column 2. The calibration mechanism 7 also includes two rotating shafts 701, and the two rotating shafts 701 are respectively installed in the detection frame 4 through bearings. A worm wheel 702 is fixedly installed on the outer side of the rotating shaft 701, and a transmission tooth 703 is fixedly installed on the end of the rotating shaft 701 away from the support column 2, and the transmission tooth 703 is meshed with the double-toothed plate 704. A worm 705 is installed in the detection frame 4 through a bearing. The surface of the worm 705 is provided with two threads in opposite directions, and the worm 705 is meshed with the two worm wheels 702. Rockers 706 are fixedly installed at both ends of the worm 705, and the two rockers 706 are respectively located on both sides of the detection frame 4.

[0034] Specifically, the detection frame 4 can provide a movable space for the detection box 6, and the detection frame 4 can provide a limiting function for the detection box 6, so that the detection box 6 can slide up and down along the inner side of the detection frame 4, and the detection frame 4 can provide a through space for the rotating shaft 701, so that the rotating shaft 701 can rotate through the bearing, and the rotating shaft 701 can provide a rotating support for the worm gear 702 and the transmission gear 703. The detection box 6 can provide a stable support for the double-toothed plate 704, and both sides of the double-toothed plate 704 have teeth that can mesh, so that the double-toothed plate 704 can mesh with two transmission teeth 703 at the same time. The detection frame 4 can It can provide a penetration space for the worm 705, so that the worm 705 can rotate with itself as the center through the bearing. The surface of the worm 705 has two sections of threads that can engage with the worm wheel 702, and the thread directions of the two sections of threads are opposite. The rocker 706 can provide a grasping support for the staff, so that the staff can drive the worm 705 to rotate by grasping the rocker 706. When the worm 705 rotates, it can drive the two worm wheels 702 to rotate synchronously in opposite directions, so that the two transmission teeth 703 can be driven to rotate in opposite directions through the rotating shaft 701, and finally the detection box 6 is driven to move up and down.

[0035] In this embodiment, a column slot 8 is provided at the bottom of the detection box 6, a limiting hole 9 is provided on the side of the detection box 6 away from the support column 2, and the limiting hole 9 is communicated with the column slot 8, a telescopic hole 10 is provided on the inner side of the bottom wall of the limiting hole 9, a placement slot 11 is provided on the side of the detection box 6 away from the support column 2, the placement slot 11 is located at the bottom of the limiting hole 9, and the placement slot 11 is communicated with the telescopic hole 10, a protective cover 12 is fixedly installed on the side of the detection box 6 away from the support column 2, and the protective cover 12 is located on one side of the limiting hole 9, and the top wall of the column slot 8 One end of a thick spring 13 is fixedly installed on the inner side, and the other end of the thick spring 13 is fixedly connected to the top of a pressure rod 14. Part of the pressure rod 14 is located on the inner side of the column groove 8, and the pressure rod 14 is located on the inner side of the through hole 5. The limit plate 15 is located on the inner side of the limit hole 9. A toothed plate 19 is fixedly installed on the side of the limit plate 15 away from the pressure rod 14, and the toothed plate 19 is located on the side of the detection box 6 away from the support column 2. A pressure rod 14 that can move up and down is elastically arranged on the inner side of the detection box 6, and a limit plate 15 is fixedly installed on one side of the pressure rod 14.

[0036] Specifically, the detection box 6 can provide space for the column slot 8, the limiting hole 9, the telescopic hole 10 and the placement slot 11. The column slot 8 can provide space for the coarse spring 13 and the pressure rod 14 to move up and down. The limiting hole 9 can provide space for the limiting plate 15 to move up and down. The limiting plate 15 can provide movable support for the toothed plate 19. The telescopic hole 10 and the placement slot 11 can provide activity space for the frequency detection mechanism 17. The detection box 6 can provide stable support for the protective cover 12, and the protective cover 12 can provide protection for part of the amplitude detection mechanism 16. The pressure rod 14 is moved to a position in contact with the top of the motor 18 to be tested. When the motor 18 to be tested vibrates, it can drive the pressure rod 14 to move up and down, so that the pressure rod 14 drives the coarse spring 13 to vibrate up and down, and the pressure rod 14 drives the limiting plate 15 to move up and down along the inner side of the limiting hole 9, and also drives the toothed plate 19 to move up and down through the limiting plate 15.

[0037] In this embodiment, an amplitude detection mechanism 16 is provided on one side of the limit plate 15, and the amplitude detection mechanism 16 includes a rotatable rotary sleeve 1603, a screw 1604 is fixedly installed on the inner side of the rotary sleeve 1603, and a threaded sleeve 1605 is threadedly connected to the outer side of the screw 1604; the amplitude detection mechanism 16 is assembled to detect the vibration amplitude of the motor 18 to be tested by the rotating rotary sleeve 1603 and the fixed threaded sleeve 1605. The amplitude detection mechanism 16 also includes a gear rod 1601, and two support plates are fixedly installed on the side of the detection box 6 away from the support column 2, and the two support plates are respectively located On both sides of the limiting hole 9, the two support plates are rotatably connected to the gear rod 1601 through bearings respectively, the gear rod 1601 is meshed with the toothed plate 19, a square rod 1602 is fixedly installed on one end of the gear rod 1601, and part of the square rod 1602 passes through one side of the rotary sleeve 1603, the square rod 1602 is slidably connected with the rotary sleeve 1603, and the threaded sleeve 1605 is fixedly installed on the side of the detection box 6 away from the support column 2 through a support member, the surface of the rotary sleeve 1603 is engraved with scales, the axial surface of the threaded sleeve 1605 is engraved with another scale, and a movable ring 1606 is slidably installed on the outer side of the threaded sleeve 1605.

[0038] Specifically, the detection box 6 can provide rotation support for the gear rod 1601 through two support plates, the gear rod 1601 can mesh with the toothed plate 19, so that the up and down movement of the toothed plate 19 drives the gear rod 1601 to rotate under the meshing action, the gear rod 1601 can provide a stable support for the square rod 1602, the rotary sleeve 1603 can provide a through space for the square rod 1602, so that the two can slide relative to each other, the square rod 1602 can conflict with the rotary sleeve 1603, the rotation of the gear rod 1601 drives the rotary sleeve 1603 to rotate through the conflict of the square rod 1602, the rotary sleeve 1603 can provide a placement space for the screw 1604, the detection box 6 can provide a stable support for the threaded sleeve 1605 through the support member, the center of the threaded sleeve 1605 is a through threaded hole, so that the threaded sleeve 1605 can be with the screw The rod 1604 is threaded, and the threaded sleeve 1605 can provide sliding support for the movable ring 1606. When the rotary sleeve 1603 rotates, it drives the screw rod 1604 to rotate, so that the screw rod 1604 and the threaded hole inside the threaded sleeve 1605 are threaded, so that the rotary sleeve 1603 moves left and right under the action of the thread, and the rotary sleeve 1603 drives the movable ring 1606 to move to the right. The rotary sleeve 1603 and the threaded sleeve 1605 can provide engraving support for the scale. The scale of the rotary sleeve 1603 is a scale engraved along the cylindrical surface of the rotary sleeve 1603, and the threaded sleeve 1605 is a scale engraved along the axial surface. After the rotary sleeve 1603 rotates one circle, it moves one scale along the axial direction of the threaded sleeve 1605, so that the maximum amplitude of the motor 18 to be measured can be accurately measured.

[0039] In this embodiment, a frequency detection mechanism 17 is arranged on the inner side of the detection box 6, and the frequency detection mechanism 17 includes an elastically arranged lower pressure sleeve 1701, and a resistance rod 1703 is fixedly installed on the inner side of the lower pressure sleeve 1701. A rotatable spiral rod 1704 is arranged on the inner side of the detection box 6. The frequency detection mechanism 17 is configured to calculate the vibration frequency of the motor 18 to be tested by the number of times the lower pressure sleeve 1701 moves up and down per unit time. One end of a spring 1702 is fixedly installed on the inner side of the telescopic hole 10, and the other end of the spring 1702 is fixedly installed on the bottom of the lower pressure sleeve 1701. A spiral groove is provided on the surface of the spiral rod 1704, and The part of the spiral rod 1704 with the spiral groove is located on the inner side of the lower pressure sleeve 1701, and the abutment rod 1703 is located on the inner side of the thread groove. A one-way gear disc 1705 is fixedly installed at the bottom of the spiral rod 1704, and a counter 1708 is placed on the inner side of the placement groove 11. A square input end 1709 is rotatably installed on the top of the counter 1708, and a one-way gear disc 1706 is slidably installed on the outer side of the input end 1709, and the one-way gear disc 1706 is meshed with the one-way gear disc 1705. One end of a spring 1707 is fixedly installed on the top of the counter 1708, and the other end of the spring 1707 contacts the bottom of the one-way gear disc 1706.

[0040] Specifically, the telescopic hole 10 can provide a stable support for one end of the spring 1702, the spring 1702 can provide an elastic support for the lower pressing sleeve 1701, the lower pressing sleeve 1701 can provide a through space for the spiral rod 1704, so that the spiral rod 1704 can rotate and move inside the lower pressing sleeve 1701, the lower pressing sleeve 1701 can provide a stable support for the contact rod 1703, the surface of the spiral rod 1704 can provide a space for the spiral groove, the spiral groove can provide a movable space for the contact rod 1703, and when the lower pressing sleeve 1701 is pressed, the spiral rod 1704 can be pressed to the lower side of the spiral groove 1703. When the sleeve 1701 moves up and down, it can drive the inner resistance rod 1703 to move downward, so that the resistance rod 1703 moves along the inner side of the spiral groove, and the resistance between the resistance rod 1703 and the inner wall of the spiral groove drives the spiral rod 1704 to rotate clockwise or counterclockwise. The inner side of the bottom wall of the telescopic hole 10 and the inner side of the top wall of the placement groove 11 can provide rotation support for the spiral rod 1704, so that the spiral rod 1704 passes through the bearing between the two, and the spiral rod 1704 can provide rotation support for the one-way toothed disc 1705. The placement slot 11 can provide a placement space for the counter 1708. The front of the counter 1708 has a display screen showing the number of turns, which is convenient for the staff to directly read the number of turns of the counter 1708. The counter 1708 is a turn counter 1708, which counts by one rotation of the top input end 1709. The counter 1708 provides elastic support for the one-way toothed disc 1706 through the spring 1707. When the screw rod 1704 drives the one-way toothed disc 1705 to rotate counterclockwise, the one-way toothed disc 1705 rotates counterclockwise. The one-way gear disc 2 1706 is driven to move up and down by the inclined surface of the teeth of the one-way gear disc 2 1706, so that the one-way gear disc 2 1706 and the input end 1709 slide up and down. When the screw rod 1704 drives the one-way gear disc 1 1705 to rotate clockwise, the one-way gear disc 1 1705 drives the one-way gear disc 2 1706 to rotate by the meshing action with the teeth of the one-way gear disc 2 1706, so that the one-way gear disc 2 1706 drives the input end 1709 to rotate, so that the counter 1708 counts according to the number of rotations.

[0041] Working principle: the staff first fixes the motor 18 to be tested on the top of the workbench 1, and then starts the telescopic rod 3 to drive the detection frame 4 to move downward, so that the detection frame 4 drives the pressure rod 14 to move downward through the detection box 6 until the bottom of the pressure rod 14 contacts the top of the motor 18 to be tested, and calibration is achieved. Then, the rocker 706 is grasped and rotated, so that the rocker 706 drives the worm 705 to rotate under the action of external force, and the worm 705 drives the rotating shaft 701 to rotate by meshing with the worm wheel 702. Since the two sections of the thread on the surface of the worm 705 are in opposite directions, the rotation directions of the two rotating shafts 701 are opposite, and the rotating shaft 701 drives the transmission gear 703 to rotate, so that the transmission gear 703 drives the double-toothed plate 704 to move upward by meshing with the double-toothed plate 704, and the double-toothed plate 704 drives the pressure rod 14 to move upward through the detection box 6, so that the bottom of the pressure rod 14 is separated from the top of the motor 18 to be tested and no longer contacts, and then the rotation of the rocker 706 is stopped;

[0042] The staff starts the motor 18 to be tested, causing the motor 18 to vibrate while working. After the motor 18 to be tested works stably, the staff grabs the rocker 706 again and rotates it in the opposite direction, causing the rocker 706 to drive the detection box 6 to move downward, until the detection box 6 contacts the inner side of the bottom wall of the detection frame 4, so that the detection box 6 is reset to the calibrated position, and the pressure rod 14 contacts the top of the motor 18 to be tested again. At this time, due to the continuous vibration of the motor 18 to be tested, the motor 18 to be tested drives the pressure rod 14 to move up and down. When the pressure rod 14 vibrates upward, the pressure rod 14 drives the thick spring 13 to be compressed, and at the same time, the pressure rod 14 drives the limit plate 15 along the limit plate 15. The inner side of the hole 9 moves upward, so that the limit plate 15 drives the toothed plate 19 to move upward, and the toothed plate 19 moves to mesh with the toothed rod 1601, so that the toothed rod 1601 drives the square rod 1602 to rotate under the meshing action, and the square rod 1602 drives the rotary sleeve 1603 to rotate through the resistance action, so that the rotary sleeve 1603 rotates to the right through the thread action of the screw rod 1604 and the threaded sleeve 1605, so that the rotary sleeve 1603 drives the movable ring 1606 to move to the right, and when the pressure rod 14 moves to the highest point under the vibration of the motor, the movable ring 1606 moves to the farthest distance to the right under the push of the rotary sleeve 1603;

[0043] When the pressure rod 14 vibrates upward, the pressure rod 14 drives the limiting plate 15 to move upward, so that the lower pressure sleeve 1701 moves upward under the elastic force of the spring 1702. The lower pressure sleeve 1701 gradually moves upward along with the limiting plate 15, and the lower pressure sleeve 1701 drives the inner resistance rod 1703 to move upward, so that the resistance rod 1703 and the spiral groove on the surface of the spiral rod 1704 conflict with each other. The spiral rod 1704 uses this conflict to rotate counterclockwise with itself as the center of the circle, and the spiral rod 1704 drives the one-way toothed disc 1705 to rotate counterclockwise. When the spring 1702 drives the lower pressure sleeve 1701 to contact the inner side of the top wall of the telescopic hole 10, the lower pressure sleeve 1701 can no longer move upward. At this time, the lower pressure sleeve 1701 and the limiting plate 1702 are in contact with each other. The positioning plate 15 is separated, and at the same time, the lower pressure sleeve 1701 drives the resistance rod 1703 to move to the inner side of the top wall of the spiral groove to contact, so that the spiral rod 1704 rotates counterclockwise for one circle. When the pressure rod 14 vibrates downward, the limiting plate 15 continues to squeeze the lower rod sleeve downward, so that the spiral sleeve 1603 rotates clockwise by the resistance of the resistance rod 1703, and the spiral rod 1704 drives the one-way toothed disc 1 1705 to rotate clockwise, so that the one-way toothed disc 1 1705 drives the input end 1709 to rotate clockwise by the meshing action with the one-way toothed disc 2 1706. When the limiting plate 15 contacts the inner side of the bottom wall of the limiting hole 9, the spiral rod 1704 rotates clockwise for one circle, so that the input end 1709 rotates for one circle, thereby increasing the number of the counter 1708.

[0044] After testing for a period of time, the staff grabs the rocker 706 and rotates it, so that the test box 6 drives the pressure rod 14 to separate from the motor 18 to be tested, so that the test box 6 no longer tests. Then the staff can measure the frequency of motor vibration per unit time through the numbers of the counter 1708, grab the pressure rod 14 and move it upward, so that the rotary sleeve 1603 moves to the position in contact with the movable sleeve, and obtains the maximum vibration amplitude of the motor 18 to be tested through the scales on the surface of the rotary sleeve 1603 and the scales on the surface of the threaded sleeve 1605.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An online motor monitoring device, comprising a workbench (1), a support column (2) being fixedly mounted on the top of the workbench (1), a motor to be tested (18) being fixedly placed on the top of the workbench (1), characterized in that: A detection frame (4) that can be moved up and down is arranged on one side of the support column (2), a detection box (6) that can be moved up and down is arranged on the inner side of the detection frame (4), a calibration mechanism (7) is arranged on the inner side of the detection frame (4), the calibration mechanism (7) comprises a double tooth plate (704) that can be moved up and down, and the double tooth plate (704) is fixedly installed on a side of the detection box (6) close to the support column (2), a pressure rod (14) that can be moved up and down is elastically arranged on the inner side of the detection box (6), a limit plate (15) is fixedly installed on one side of the pressure rod (14), and a vibration control device (15) is arranged on one side of the limit plate (15). An amplitude detection mechanism (16), the amplitude detection mechanism (16) comprising a rotatable rotary sleeve (1603), a screw rod (1604) being fixedly mounted on the inner side of the rotary sleeve (1603), a threaded sleeve (1605) being threadedly connected to the outer side of the screw rod (1604), a frequency detection mechanism (17) being arranged on the inner side of the detection box (6), the frequency detection mechanism (17) comprising an elastically arranged lower pressure sleeve (1701), a resisting rod (1703) being fixedly mounted on the inner side of the lower pressure sleeve (1701), and a rotatable spiral rod (1704) being arranged on the inner side of the detection box (6); A calibration mechanism (7) configured to adjust the position of the pressure rod (14) for calibration; An amplitude detection mechanism (16) is configured to detect the vibration amplitude of the motor (18) to be tested by means of a rotating rotary sleeve (1603) and a fixed threaded sleeve (1605); A frequency detection mechanism (17) is configured to calculate the vibration frequency of the motor (18) to be tested by the number of times the lower pressure sleeve (1701) moves up and down within a unit time; The amplitude detection mechanism (16) further comprises a gear rod (1601). Two support plates are fixedly mounted on a side of the detection box (6) away from the support column (2). The two support plates are respectively located on both sides of the limiting hole (9). The two support plates are rotatably connected to the gear rod (1601) via bearings. The gear rod (1601) meshes with the toothed plate (19). A square rod (1602) is fixedly mounted on one end of the gear rod (1601). Part of the square rod (1602) passes through one side of a rotary sleeve (1603). The square rod (1602) is slidably connected to the rotary sleeve (1603). The threaded sleeve (1605) is fixedly mounted on a side of the detection box (6) away from the support column (2) via a support. The surface of the rotary sleeve (1603) is engraved with scales. The axial surface of the threaded sleeve (1605) is engraved with another scale. A movable ring (1606) is slidably mounted on the outer side of the threaded sleeve (1605).

2. The motor online monitoring device according to claim 1, characterized in that: A telescopic rod (3) is fixedly mounted on the top of the support column (2); the detection frame (4) is connected to the support column (2) in a limited sliding manner; a side of the detection frame (4) close to the support column (2) is fixedly connected to the output end of the telescopic rod (3) via a fixing plate; and a through hole (5) is provided through the bottom of the detection frame (4).

3. The motor online monitoring device according to claim 2 is characterized in that: The calibration mechanism (7) further comprises two rotating shafts (701), the two rotating shafts (701) being respectively installed through bearings inside the detection frame (4), a worm wheel (702) being fixedly installed on the outer side of the rotating shaft (701), a transmission tooth (703) being fixedly installed on one end of the rotating shaft (701) away from the support column (2), and the transmission tooth (703) being meshed with a double tooth plate (704), a worm (705) being installed through bearings inside the detection frame (4), two threads in opposite directions being provided on the surface of the worm (705), and the worm (705) being meshed with the two worm wheels (702), rockers (706) being respectively fixedly installed at both ends of the worm (705), and the two rockers (706) being respectively located on two sides of the detection frame (4).

4. The motor online monitoring device according to claim 1, characterized in that: The bottom of the detection box (6) is provided with a column slot (8), a limiting hole (9) is provided on a side of the detection box (6) away from the support column (2), and the limiting hole (9) is communicated with the column slot (8), a telescopic hole (10) is provided on the inner side of the bottom wall of the limiting hole (9), a placement slot (11) is provided on a side of the detection box (6) away from the support column (2), the placement slot (11) is located at the bottom of the limiting hole (9), and the placement slot (11) is communicated with the telescopic hole (10), and a protective cover (12) is fixedly installed on the side of the detection box (6) away from the support column (2), and the protective cover (12) is located on one side of the limiting hole (9).

5. The motor online monitoring device according to claim 4, characterized in that: One end of a thick spring (13) is fixedly mounted on the inner side of the top wall of the column slot (8), and the other end of the thick spring (13) is fixedly connected to the top of the pressure rod (14). Part of the pressure rod (14) is located on the inner side of the column slot (8), the pressure rod (14) is located on the inner side of the through hole (5), the limit plate (15) is located on the inner side of the limit hole (9), and a toothed plate (19) is fixedly mounted on the side of the limit plate (15) away from the pressure rod (14), and the toothed plate (19) is located on the side of the detection box (6) away from the support column (2).

6. The motor online monitoring device according to claim 5, characterized in that: One end of a spring (1702) is fixedly mounted on the inner side of the telescopic hole (10), and the other end of the spring (1702) is fixedly mounted on the bottom of the lower pressure sleeve (1701). A spiral groove is provided on the surface of the spiral rod (1704), and the portion of the spiral rod (1704) with the spiral groove is located on the inner side of the lower pressure sleeve (1701). The abutment rod (1703) is located on the inner side of the spiral groove. A one-way toothed disc (1705) is fixedly mounted on the bottom of the spiral rod (1704).

7. The motor online monitoring device according to claim 6, characterized in that: A counter (1708) is placed inside the placement groove (11), a square input end (1709) is rotatably mounted on the top of the counter (1708), a one-way toothed disc (1706) is slidably mounted on the outside of the input end (1709), and the one-way toothed disc (1706) is meshed with the one-way toothed disc (1705), and one end of a second spring (1707) is fixedly mounted on the top of the counter (1708), and the other end of the second spring (1707) is in contact with the bottom of the second one-way toothed disc (1706).

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