Low-voltage motor fault detection and analysis device and use method thereof

Abstract

The invention relates to the technical field of motor fault detection, and discloses a low-voltage motor fault detection and analysis device and a use method thereof.The low-voltage motor fault detection and analysis device comprises a detection box, the detection box comprises a detection mechanism arranged in the detection box, the detection mechanism comprises a strip-shaped plate fixedly installed in the detection box, and the strip-shaped plate is slidably sleeved with a rectangular sliding block; limiting grooves are formed in the inner wall of the left side and the inner wall of the right side of the detection box respectively, limiting sliding plates are installed in the two limiting grooves in a sliding mode, connecting rods are installed at the tops of the limiting sliding plates in a hinged mode, and the top ends of the connecting rods are hinged to rectangular sliding blocks. The rectangular sliding block can drive the sliding rod to slide out of the detection box, the sliding rod can drive the circular detection plate to move in the transparent scale block in the direction away from the detection box, at the moment, it can be determined that the bearing of the low-voltage motor goes wrong, and whether the problem of the bearing of the low-voltage motor is too serious or not can be judged through the movement distance of the circular detection plate.

Description

Technical Field

[0001] The present invention relates to the technical field of motor fault detection equipment, and in particular to a low-voltage motor fault detection and analysis device and a use method thereof. Background Art

[0002] A low-voltage motor refers to an electric motor with a rated voltage below 1000V. The so-called low voltage means an AC voltage below 1000V. The motors we are talking about here generally have a voltage of AC 380V, or 440V, or 660V and other levels of asynchronous motors.

[0003] During the analysis and testing of low-voltage motors, especially the dynamic balancing test of rotors, if the rotor generates noise and the motor vibrates greatly during rotation, it means that the motor bearings are damaged or excessively worn, and the bearings need to be replaced. Summary of the invention

[0004] The purpose of the present invention is to provide a low-voltage motor fault detection and analysis device and a method of using the same, so as to solve the problem that in the analysis and detection of low-voltage motors, especially the dynamic balance detection of rotors, if the rotor generates noise and the motor vibrates greatly during rotation, it means that the motor bearings are damaged or excessively worn, and the bearings need to be replaced.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a low-voltage motor fault detection and analysis device, comprising a detection box, the detection box comprising a detection mechanism arranged in the detection box, the detection mechanism comprising a strip plate fixedly installed in the detection box, a rectangular slider slidably sleeved on the strip plate, and further comprising:

[0007] Limiting grooves are respectively provided on the left inner wall and the right inner wall of the detection box, and limiting slide plates are slidably installed in the two limiting grooves. A connecting rod is hingedly installed on the top of the limiting slide plate, and the top of the connecting rod is hinged to the rectangular slider. A sliding rod is fixedly installed on the front side of the rectangular slider, and the front end of the sliding rod extends to the outside of the detection box and is slidably connected to the detection box. A circular detection plate is fixedly installed on the front end of the sliding rod, and a transparent scale block is fixedly installed on the front side of the detection box, and the circular detection plate is slidably connected to the transparent scale block.

[0008] Furthermore, a clamping mechanism is provided in the detection box, and the clamping mechanism includes a placement plate arranged in the detection box, a low-voltage motor is arranged on the top of the placement plate, and two T-slots are opened on the top of the placement plate, and T-slide plates are slidably installed in the two T-slots respectively, and telescopic rods are fixedly installed on the sides of the two T-slide plates close to each other, and clamping arc plates are fixedly installed on the ends of the two telescopic rods close to each other, and the two clamping arc plates are both in contact with the low-voltage motor, and clamping springs are respectively sleeved on the two telescopic rods, and the ends of the two clamping springs away from each other are fixedly connected to the two T-slide plates respectively, and the ends of the two clamping springs close to each other are fixedly connected to the two clamping arc plates respectively.

[0009] Furthermore, a fixing mechanism is provided in the detection box, and the fixing mechanism includes two bar blocks arranged in the detection box, the left side and the right side of the placement plate respectively extend into the two bar blocks and are slidably connected to the two bar blocks, and limiting bar grooves are respectively provided on the left inner wall and the right inner wall of the detection box, and a bar limiting slide plate is fixedly installed on the side of the two bar blocks away from each other, and the side of the two bar limiting slide plates away from each other respectively extends into the two limiting bar grooves and is slidably connected to the two limiting bar grooves, and a reinforcing inclined plate is fixedly installed on the top of the two bar blocks, and the side of the two reinforcing inclined plates close to each other is respectively in contact with two T-shaped slide plates.

[0010] Furthermore, a transmission mechanism 1 is provided in the detection box, and the transmission mechanism 1 includes an air box fixedly mounted on the bottom inner wall of the detection box, an extrusion plate is slidably mounted in the air box, two clamping mechanisms are fixedly mounted on the top of the extrusion plate, a transmission plate is fixedly mounted on the top of the two vertical plates, the transmission plate is in contact with the placement plate, and two shock-absorbing springs are fixedly mounted on the bottom inner wall of the detection box, and the tops of the two shock-absorbing springs are in contact with the placement plate.

[0011] Furthermore, two transmission mechanisms 2 are provided on the back of the air box, and the transmission mechanism 2 includes an outlet pipe fixedly installed on the back of the air box, a transmission air box is fixedly installed on the end of the outlet pipe, the bottom of the transmission air box is fixedly connected to the detection box, a transmission slide rod is slidably installed in the transmission air box, the front end of the transmission slide rod extends to the outside of the transmission air box, and a transmission block is fixedly installed on the front end of the transmission slide rod.

[0012] Furthermore, a sealing mechanism is provided in the detection box, and the sealing mechanism includes a sealing groove opened in the detection box, a sealing plate is slidably installed in the sealing groove, two strip-shaped limit grooves are opened on the back inner wall of the sealing groove, and two connecting rectangular rods are fixedly installed on the back of the sealing plate, the two connecting rectangular rods respectively pass through the two strip-shaped limit grooves, and the ends of the two connecting rectangular rods are respectively hinged to the two transmission blocks.

[0013] Furthermore, a locking mechanism is respectively provided on the left and right sides of the detection box, and the locking mechanism includes a mounting plate fixedly installed on the left side of the detection box, a rectangular slide bar is slidably installed on the mounting plate, the rectangular slide bar passes through the mounting plate, a trapezoidal block is fixedly installed on the bottom end of the rectangular slide bar, the trapezoidal block is adapted to the fixed hollow block, a fixed circular plate is fixedly sleeved on the rectangular slide bar, a locking spring is sleeved on the rectangular slide bar, the top end of the locking spring is fixedly connected to the fixed circular plate, and the bottom end of the locking spring is fixedly connected to the mounting plate.

[0014] Furthermore, the low-voltage motor fault detection and analysis device has the following steps:

[0015] S1: First, pull out the placement plate. At this time, the bottom of the placement plate contacts the door frame at the top of the sealing groove on the detection box. Place the low-voltage motor on the placement plate and place the low-voltage motor between the two clamping arc plates. The low-voltage motor is temporarily fixed by the elastic force of the two clamping springs and the clamping arc plates to prevent the low-voltage motor from rolling on the placement plate. Then push the placement plate to put the placement plate into the detection box. In the process of the placement plate driving the T-shaped slide plate to move, the T-shaped slide plate will move closely against the reinforcement inclined plate. Under the action of the inclined surface of the reinforcement inclined plate, the T-shaped slide plate will gradually approach each other along the reinforcement inclined plate. The T-shaped slide plate will drive the two telescopic rods to contract. At this time, the two clamping springs will gradually compress and use the compression force to make the two clamping arc plates further clamp the low-voltage motor to prevent the low-voltage motor from shaking left and right during operation.

[0016] S2: After the low-voltage motor leaves the door frame at the top of the sealing groove and enters the test box, the low-voltage motor will drive the placement plate to descend under the action of gravity, and the placement plate will contact the transmission plate, and the transmission plate will contact the shock-absorbing spring. At this time, the transmission plate will drive the vertical plate and the shock-absorbing spring to continue to descend during the descent process. When the vertical plate descends to a certain height, it will stop descending. During the process of starting the low-voltage motor test, the low-voltage motor will shake vertically up and down. When the low-voltage motor drives the transmission plate to shake downward, the shock-absorbing spring will absorb the shaking force generated by the descent of the transmission plate to prevent the transmission plate from hitting the top of the air box;

[0017] S3: During the downward movement of the vertical plate, the extrusion plate will be driven to descend. The extrusion plate will discharge the gas in the air box through two air outlet pipes. The gas will enter the transmission air box through the air outlet pipes. The gas will push the transmission slide rod in the transmission air box to move towards the direction close to the sealing groove. The transmission slide rod drives the transmission block to move. The transmission block will drive the connecting rectangular rod to move upward. The connecting rectangular rod drives the sealing plate to move upward from the sealing groove and seal the detection box, thereby protecting the low-voltage motor and extending the service life of the low-voltage motor. When opening the detection box, push the two U-shaped transmission round rods. The U-shaped transmission round rods will drive the fixed hollow block to push. When the fixed hollow block contacts the trapezoidal block, it will drive the trapezoidal block to rise under the action of the inclined surface of the trapezoidal block. At this time, the locking spring undergoes compressive deformation. After the trapezoidal block passes through the fixed hollow block, the locking spring will push the trapezoidal block into the fixed hollow block under the action of elastic force. At this time, the placement plate drives the low-voltage motor to rise to the same height as the door frame at the top of the sealing groove, and the low-voltage motor can be pulled out to replace the low-voltage motor and continue the next detection work;

[0018] S4: When detecting the low-voltage motor, start the low-voltage motor. During the movement of the low-voltage motor, since the left and right of the low-voltage motor are restricted, the low-voltage motor will only produce vertical up-and-down shaking. If there is no problem with the bearing of the low-voltage motor, the shaking amplitude generated during the operation of the low-voltage motor will not touch the limit slide plate. If the shaking generated during the operation of the low-voltage motor touches the limit slide plate, the limit slide plate will drive the connecting rod to move under the action of the shaking of the low-voltage motor. The connecting rod will drive the rectangular slider to move towards the direction close to the sealing groove. The rectangular slider will drive the sliding rod to slide out of the detection box. The sliding rod will drive the circular detection plate to move away from the detection box in the transparent scale block. At this time, it can be determined that there is a problem with the bearing of the low-voltage motor.

[0019] The present invention has the following beneficial effects:

[0020] (1) For the low-voltage motor fault detection and analysis device of the present invention, when detecting the low-voltage motor, start the low-voltage motor. During the movement of the low-voltage motor, since the left and right of the low-voltage motor are restricted, the low-voltage motor will only produce vertical up-and-down shaking. If there is no problem with the bearing of the low-voltage motor, the shaking amplitude generated during the operation of the low-voltage motor will not touch the limit slide plate. If the shaking generated during the operation of the low-voltage motor touches the limit slide plate, the limit slide plate will drive the connecting rod to move under the action of the shaking of the low-voltage motor. The connecting rod will drive the rectangular slider to move towards the direction close to the sealing groove. The rectangular slider will drive the sliding rod to slide out of the detection box. The sliding rod will drive the circular detection plate to move away from the detection box in the transparent scale block. At this time, it can be determined that there is a problem with the bearing of the low-voltage motor. The degree of the problem with the bearing of the low-voltage motor can be judged by the distance that the circular detection plate moves;

[0021] (2) A low-voltage motor fault detection and analysis device of the present invention is provided. The placement plate is pulled out. At this time, the bottom of the placement plate contacts the door frame at the top of the sealing groove on the detection box. The low-voltage motor is placed on the placement plate and placed between the two clamping arc plates. The low-voltage motor is temporarily fixed by the elastic force of the two clamping springs and the clamping arc plates to prevent the low-voltage motor from rolling on the placement plate. Then, the placement plate is pushed to put the placement plate into the detection box. In the process of the placement plate driving the T-shaped slide plate to move, the T-shaped slide plate will move closely against the reinforcing inclined plate. Under the action of the inclined surface of the reinforcing inclined plate, the T-shaped slide plate will gradually approach each other along the reinforcing inclined plate. The T-shaped slide plate will drive the two telescopic rods to contract. At this time, the two clamping springs will gradually compress and the compression force will cause the two clamping arc plates to further clamp the low-voltage motor, thereby achieving further reinforcement of the low-voltage motor and preventing the low-voltage motor from shaking left and right during the operation of the low-voltage motor, thereby affecting the accuracy of vertical detection.

[0022] (3) The present invention provides a low-voltage motor fault detection and analysis device. After the low-voltage motor leaves the door frame at the top of the sealing groove and enters the detection box, the low-voltage motor will drive the placement plate to descend under the action of gravity. The placement plate will contact the transmission plate, and the transmission plate will contact the shock-absorbing spring. At this time, the transmission plate will drive the vertical plate and the shock-absorbing spring to continue to descend during the descent process. When the vertical plate descends to a certain height, it will stop descending. During the process of starting the low-voltage motor detection, the low-voltage motor will shake vertically up and down. When the low-voltage motor drives the transmission plate to shake downward, the shock-absorbing spring will absorb the shaking force generated by the descent of the transmission plate, thereby preventing the transmission plate from hitting the top of the air box, thereby generating noise that affects the judgment of the noise generated by the low-voltage motor itself, and also preventing the transmission plate from hitting the air box to damage the detection device;

[0023] (4) A low-voltage motor fault detection and analysis device of the present invention. During the descent of the vertical plate, the extrusion plate will be driven to descend. The extrusion plate will discharge the gas in the air box through two air outlet pipes. The gas will enter the transmission air box through the air outlet pipes. The gas will push the transmission slide rod in the transmission air box to move towards the direction close to the sealing groove. The transmission slide rod drives the transmission block to move. The transmission block will drive the connecting rectangular rod to move upward. The connecting rectangular rod drives the sealing plate to move upward from the sealing groove and seal the detection box, preventing dust from entering the detection box during the detection process and affecting the low-voltage motor. Coarse and hard dust particles may cause mechanical wear during the operation of the motor, thus protecting the low-voltage motor and extending its service life. When opening the detection box, push two U-shaped transmission round rods. The U-shaped transmission round rods will drive the fixed hollow block to move. When the fixed hollow block contacts the trapezoidal block, it will drive the trapezoidal block to rise under the action of the inclined surface of the trapezoidal block. At this time, the locking spring undergoes compressive deformation. After the trapezoidal block passes through the fixed hollow block, the locking spring will push the trapezoidal block into the fixed hollow block under the action of elastic force. At this time, the placement plate drives the low-voltage motor to rise to the same height as the door frame at the top of the sealing groove, and the low-voltage motor can be pulled out to replace the low-voltage motor and continue the next detection work.

[0024] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is the overall structural schematic diagram of the present invention;

[0027] Figure 2 It is the side cross-sectional structural schematic diagram of the present invention;

[0028] Figure 3 For the present invention Figure 2 The enlarged structural schematic diagram of A in it;

[0029] Figure 4 It is the rear partial cross-sectional structural schematic diagram of the present invention;

[0030] Figure 5 For the present invention Figure 4 The enlarged structural schematic diagram of B in it;

[0031] Figure 6 It is the partial cross-sectional structural schematic diagram of the transmission mechanism of the present invention;

[0032] Figure 7 Schematic diagram of the internal structure of the present invention;

[0033] Figure 8 Schematic diagram of the method steps of the present invention.

[0034] In the attached drawings, the list of components represented by each label is as follows:

[0035] In the figure: 1. Detection box; 100. Detection mechanism; 101. Strip board; 102. Rectangular slider; 103. Limit groove; 104. Limit slide board; 105. Connecting rod; 106. Slide rod; 107. Circular detection board; 108. Transparent scale block; 2. Clamping mechanism; 201. Placing board; 202. Low-voltage motor; 203. T-shaped groove; 204. T-shaped slide board; 205. Telescopic rod; 206. Clamping arc plate; 207. Clamping spring; 3. Fixing mechanism; 301. Strip block; 302. Limit strip groove; 303. Strip limit slide board; 304. Reinforcing inclined plate; 4. Transmission mechanism one; 401. Air box; 402. Extrusion plate; 403. Vertical board; 404. Transmission board; 405. Shock-absorbing spring; 5. Transmission mechanism two; 501. Air outlet pipe; 502. Transmission air box; 503. Transmission slide rod; 504. Transmission block; 505. C-shaped transmission round rod; 506. Fixed hollow block; 6. Sealing mechanism; 601. Sealing groove; 602. Sealing plate; 603. Strip limit groove; 604. Connecting rectangular rod; 7. Locking mechanism; 701. Installation board; 702. Rectangular slide rod; 703. Trapezoidal block; 704. Fixed round plate; 705. Locking spring. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1 - Figure 8 As shown in the figure, the present invention is a low-voltage motor fault detection and analysis device, including a detection box 1. The detection box 1 includes a detection mechanism 100 arranged inside the detection box 1. The detection mechanism 100 includes a strip board 101 fixedly installed inside the detection box 1. A rectangular slider 102 is slidably sleeved on the strip board 101. It further includes:

[0038] Limiting grooves 103 are respectively provided on the left inner wall and the right inner wall of the detection box 1, and limiting slide plates 104 are slidably installed in the two limiting grooves 103. A connecting rod 105 is hingedly installed on the top of the limiting slide plate 104, and the top of the connecting rod 105 is hinged to the rectangular slider 102. A sliding rod 106 is fixedly installed on the front side of the rectangular slider 102. The front end of the sliding rod 106 extends to the outside of the detection box 1 and is slidably connected to the detection box 1. A circular detection plate 107 is fixedly installed on the front end of the sliding rod 106, and a transparent scale block 108 is fixedly installed on the front side of the detection box 1, and the circular detection plate 107 is slidably connected to the transparent scale block 108.

[0039] like Figure 4 and Figure 5 As shown, a clamping mechanism 2 is arranged in the detection box 1, and the clamping mechanism 2 includes a placement plate 201 arranged in the detection box 1, a low-voltage motor 202 is arranged on the top of the placement plate 201, and two T-slots 203 are opened on the top of the placement plate 201, and T-shaped slide plates 204 are slidably installed in the two T-slots 203 respectively, and telescopic rods 205 are fixedly installed on the sides of the two T-shaped slide plates 204 close to each other, and clamping arc plates 206 are fixedly installed on the ends of the two telescopic rods 205 close to each other, and the two clamping arc plates 206 are both in contact with the low-voltage motor 202, and clamping springs 207 are respectively sleeved on the two telescopic rods 205, and the ends of the two clamping springs 207 away from each other are fixedly connected to the two T-shaped slide plates 204, and the ends of the two clamping springs 207 close to each other are fixedly connected to the two clamping arc plates 206.

[0040] Pull out the placement plate 201, at this time the bottom of the placement plate 201 contacts the door frame at the top of the sealing groove 601 on the detection box 1, place the low-voltage motor 202 on the placement plate 201, and place the low-voltage motor 202 between the two clamping arc plates 206, and temporarily fix the low-voltage motor 202 by the elastic force of the two clamping springs 207 and the clamping arc plates 206 to prevent the low-voltage motor 202 from rolling on the placement plate 201.

[0041] like Figure 5As shown, a fixing mechanism 3 is provided in the detection box 1, and the fixing mechanism 3 includes two bar blocks 301 arranged in the detection box 1, and the left and right sides of the placement plate 201 extend into the two bar blocks 301 respectively and are slidably connected to the two bar blocks 301, and limiting bar grooves 302 are respectively provided on the left inner wall and the right inner wall of the detection box 1, and a bar limiting slide plate 303 is fixedly installed on the side of the two bar blocks 301 away from each other, and the side of the two bar limiting slide plates 303 away from each other extends into the two limiting bar grooves 302 and is slidably connected to the two limiting bar grooves 302, and the tops of the two bar blocks 301 are respectively fixedly installed with reinforcing inclined plates 304, and the sides of the two reinforcing inclined plates 304 close to each other are respectively in contact with the two T-shaped slide plates 204.

[0042] In the process of the placement plate 201 driving the T-shaped slide 204 to move, the T-shaped slide 204 will move close to the reinforcing inclined plate 304. Under the action of the inclined surface of the reinforcing inclined plate 304, the T-shaped slide 204 will gradually approach each other along the reinforcing inclined plate 304. The T-shaped slide 204 will drive the two telescopic rods 205 to contract. At this time, the two clamping springs 207 will gradually compress and the compression force will cause the two clamping arc plates 206 to further clamp the low-voltage motor 202.

[0043] like Figure 5 As shown, a transmission mechanism 4 is provided in the detection box 1, and the transmission mechanism 4 includes an air box 401 fixedly installed on the bottom inner wall of the detection box 1, and an extrusion plate 402 is slidably installed in the air box 401. Two clamping mechanisms 2 403 are fixedly installed on the top of the extrusion plate 402, and a transmission plate 404 is fixedly installed on the top of the two vertical plates 403. The transmission plate 404 is in contact with the placement plate 201. Two shock-absorbing springs 405 are fixedly installed on the bottom inner wall of the detection box 1, and the tops of the two shock-absorbing springs 405 are in contact with the placement plate 201.

[0044] The placement plate 201 will contact the transmission plate 404, and the transmission plate 404 will contact the shock-absorbing spring 405. At this time, the transmission plate 404 will drive the vertical plate 403 and the shock-absorbing spring 405 to continue to descend during the descent process. When the vertical plate 403 descends to a certain height, it will stop descending. In the process of starting the low-voltage motor 202 for detection, the low-voltage motor 202 will shake vertically up and down. When the low-voltage motor 202 drives the transmission plate 404 to shake downward, the shock-absorbing spring 405 will absorb the shaking force generated by the descent of the transmission plate 404, thereby preventing the transmission plate 404 from hitting the top of the air box 401, thereby generating noise that affects the judgment of the noise generated by the low-voltage motor 202 itself, and also preventing the transmission plate 404 from hitting the air box 401 to damage the detection device.

[0045] like Figure 6As shown, two transmission mechanisms 25 are arranged on the back of the air box 401, and the transmission mechanism 25 includes an air outlet pipe 501 fixedly installed on the back of the air box 401, and a transmission air box 502 is fixedly installed at the end of the air outlet pipe 501. The bottom of the transmission air box 502 is fixedly connected to the detection box 1, and a transmission slide rod 503 is slidably installed in the transmission air box 502. The front end of the transmission slide rod 503 extends to the outside of the transmission air box 502, and a transmission block 504 is fixedly installed at the front end of the transmission slide rod 503.

[0046] The extrusion plate 402 will discharge the gas in the air box 401 through the two air outlet pipes 501, and the gas will enter the transmission air box 502 through the air outlet pipes 501. The gas will push the transmission slide bar 503 in the transmission air box 502 to move toward the sealing groove 601, and the transmission slide bar 503 drives the transmission block 504 to move.

[0047] like Figure 2 , Figure 4 and Figure 6 As shown, a sealing mechanism 6 is provided in the detection box 1, and the sealing mechanism 6 includes a sealing groove 601 opened in the detection box 1, a sealing plate 602 is slidably installed in the sealing groove 601, two strip-shaped limit grooves 603 are opened on the inner wall of the back side of the sealing groove 601, and two connecting rectangular rods 604 are fixedly installed on the back side of the sealing plate 602, and the two connecting rectangular rods 604 respectively penetrate the two strip-shaped limit grooves 603, and the ends of the two connecting rectangular rods 604 are respectively hinged to the two transmission blocks 504.

[0048] The transmission block 504 will drive the connecting rectangular rod 604 to move upward, and the connecting rectangular rod 604 will drive the sealing plate 602 to move upward from the sealing groove 601 and seal the detection box 1 to prevent dust from entering the detection box 1 and affecting the low-voltage motor 202 during the detection process. Coarse and hard dust particles may cause mechanical wear when the motor is running, thereby protecting the low-voltage motor 202 and extending the service life of the low-voltage motor 202.

[0049] like Figure 5 As shown, a locking mechanism 7 is respectively provided on the left and right sides of the detection box 1, and the locking mechanism 7 includes a mounting plate 701 fixedly installed on the left side of the detection box 1, a rectangular slide bar 702 is slidably installed on the mounting plate 701, the rectangular slide bar 702 penetrates the mounting plate 701, a trapezoidal block 703 is fixedly installed on the bottom end of the rectangular slide bar 702, the trapezoidal block 703 is adapted to the fixed hollow block 506, a fixed circular plate 704 is fixedly sleeved on the rectangular slide bar 702, a locking spring 705 is sleeved on the rectangular slide bar 702, the top end of the locking spring 705 is fixedly connected to the fixed circular plate 704, and the bottom end of the locking spring 705 is fixedly connected to the mounting plate 701.

[0050] When the fixed hollow block 506 contacts the trapezoidal block 703, the trapezoidal block 703 will be driven to rise under the action of the inclined surface of the trapezoidal block 703. At this time, the locking spring 705 is compressed and deformed. After the trapezoidal block 703 passes through the fixed hollow block 506, the locking spring 705 will push the trapezoidal block 703 into the fixed hollow block 506 under the action of elastic force. At this time, the placement plate 201 drives the low-voltage motor 202 to rise to the same height as the door frame at the top of the sealing groove 601. The low-voltage motor 202 can be pulled out to replace the low-voltage motor 202 and continue the next detection work.

[0051] like Figure 1-8 A low voltage motor fault detection and analysis device is shown, and the method steps are as follows:

[0052] S1: First, pull out the placement plate 201. At this time, the bottom of the placement plate 201 contacts the door frame at the top of the sealing groove 601 on the detection box 1. Place the low-voltage motor 202 on the placement plate 201 and place the low-voltage motor 202 between the two clamping arc plates 206. The low-voltage motor 202 is temporarily fixed by the elastic force of the two clamping springs 207 and the clamping arc plates 206 to prevent the low-voltage motor 202 from rolling on the placement plate 201. Then push the placement plate 201 to put the placement plate 201 into the detection box 1. When the positioning plate 201 drives the T-shaped slide plate 204 to move, the T-shaped slide plate 204 will move closely against the reinforcement inclined plate 304. Under the action of the inclined surface of the reinforcement inclined plate 304, the T-shaped slide plate 204 will gradually approach each other along the reinforcement inclined plate 304, and the T-shaped slide plate 204 will drive the two telescopic rods 205 to contract. At this time, the two clamping springs 207 will gradually compress and the two clamping arc plates 206 will further clamp the low-voltage motor 202 through the compression force, so as to prevent the low-voltage motor 202 from shaking left and right during the operation of the low-voltage motor 202.

[0053] S2: After the low-voltage motor 202 leaves the door frame at the top of the sealing groove 601 and enters the detection box 1, the low-voltage motor 202 will drive the placement plate 201 to descend under the action of gravity, and the placement plate 201 will contact the transmission plate 404, and the transmission plate 404 will contact the shock-absorbing spring 405. At this time, the transmission plate 404 will drive the vertical plate 403 and the shock-absorbing spring 405 to continue to descend during the descent process. When the vertical plate 403 drops to a certain height, it will stop descending. In the process of starting the low-voltage motor 202 for detection, the low-voltage motor 202 will shake vertically up and down. When the low-voltage motor 202 drives the transmission plate 404 to shake downward, the shock-absorbing spring 405 will absorb the shaking force generated by the descent of the transmission plate 404 to prevent the transmission plate 404 from hitting the top of the air box 401.

[0054] S3: During the downward movement of the vertical plate 403, it will drive the extrusion plate 402 to descend. The extrusion plate 402 will discharge the gas in the air box 401 through two air outlet pipes 501. The gas will enter the transmission air box 502 through the air outlet pipes 501. The gas will push the transmission slide bar 503 in the transmission air box 502 to move towards the direction close to the sealing groove 601. The transmission slide bar 503 drives the transmission block 504 to move. The transmission block 504 will drive the connecting rectangular rod 604 to move upward. The connecting rectangular rod 604 drives the sealing plate 602 to move upward from the sealing groove 601 and seal the detection box 1, thereby protecting the low-voltage motor 202 and prolonging the service life of the low-voltage motor 202. When opening the detection box 1, push the two U-shaped transmission round rods 505. The U-shaped transmission round rods 505 will drive the fixed hollow block 506 to push. When the fixed hollow block 506 contacts the trapezoidal block 703, it will drive the trapezoidal block 703 to rise under the action of the inclined surface of the trapezoidal block 703. At this time, the locking spring 705 undergoes compressive deformation. After the trapezoidal block 703 passes through the fixed hollow block 506, the locking spring 705 will push the trapezoidal block 703 to snap into the fixed hollow block 506 under the action of the elastic force. At this time, the placement plate 201 drives the low-voltage motor 202 to rise to the same height as the door frame at the top of the sealing groove 601. Pull out the low-voltage motor 202 to replace the low-voltage motor 202 and continue the next detection work;

[0055] S4: When detecting the low-voltage motor 202, start the low-voltage motor 202. During the movement of the low-voltage motor 202, since the left and right of the low-voltage motor 202 are restricted, the low-voltage motor 202 will only produce vertical up and down shaking. If there is no problem with the bearing of the low-voltage motor 202, the shaking amplitude generated during the operation of the low-voltage motor 202 will not touch the limit slide plate 104. If the shaking generated during the operation of the low-voltage motor 202 touches the limit slide plate 104, the limit slide plate 104 will drive the connecting rod 105 to move under the action of the shaking of the low-voltage motor 202. The connecting rod 105 will drive the rectangular slider 102 to move towards the direction close to the sealing groove 601. The rectangular slider 102 will drive the slide bar 106 to slide out of the detection box 1. The slide bar 106 will drive the circular detection plate 107 to move away from the detection box 1 in the transparent scale block 108. At this time, it can be determined that there is a problem with the bearing of the low-voltage motor 202.

[0056] The above-disclosed preferred embodiments of the present invention are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art in the technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A low-voltage motor fault detection and analysis device, comprising a detection box (1), the detection box (1) comprising a detection mechanism (100) arranged in the detection box (1), the detection mechanism (100) comprising a strip plate (101) fixedly installed in the detection box (1), a rectangular slider (102) being slidably sleeved on the strip plate (101), characterized in that: Also includes: The detection box (1) has limit slots (103) respectively arranged on the left inner wall and the right inner wall, and limit slide plates (104) are slidably installed in the two limit slots (103). A connecting rod (105) is hingedly installed on the top of the limit slide plate (104), and the top end of the connecting rod (105) is hingedly connected to the rectangular slider (102). A sliding rod (106) is fixedly installed on the front side of the rectangular slider (102), and the front end of the sliding rod (106) extends outside the detection box (1) and is slidably connected to the detection box (1). A circular detection plate (107) is fixedly installed on the front end of the sliding rod (106), and a transparent scale block (108) is fixedly installed on the front side of the detection box (1), and the circular detection plate (107) is slidably connected to the transparent scale block (108).

2. A low voltage motor fault detection and analysis device according to claim 1, characterized in that: The detection box (1) is provided with a clamping mechanism (2), the clamping mechanism (2) comprising a placement plate (201) arranged in the detection box (1), a low-voltage motor (202) being arranged on the top of the placement plate (201), two T-shaped slots (203) being provided on the top of the placement plate (201), T-shaped slide plates (204) being slidably mounted in the two T-shaped slots (203), telescopic rods (205) being fixedly mounted on the sides of the two T-shaped slide plates (204) close to each other, and the two T-shaped slide plates (204) being arranged on the top of the placement plate (201). The ends of the telescopic rods (205) that are close to each other are respectively fixedly installed with clamping arc plates (206), and the two clamping arc plates (206) are in contact with the low-voltage motor (202). The two telescopic rods (205) are respectively sleeved with clamping springs (207), and the ends of the two clamping springs (207) that are away from each other are respectively fixedly connected to the two T-shaped slide plates (204), and the ends of the two clamping springs (207) that are close to each other are respectively fixedly connected to the two clamping arc plates (206).

3. A low voltage motor fault detection and analysis device according to claim 2, characterized in that: The detection box (1) is provided with a fixing mechanism (3), the fixing mechanism (3) comprising two bar blocks (301) arranged in the detection box (1), the left side and the right side of the placement plate (201) respectively extend into the two bar blocks (301) and are slidably connected to the two bar blocks (301), the left inner wall and the right inner wall of the detection box (1) are respectively provided with limiting bar grooves (302), the sides of the two bar blocks (301) away from each other are respectively fixedly mounted with bar limiting slide plates (303), the sides of the two bar limiting slide plates (303) away from each other respectively extend into the two limiting bar grooves (302) and are slidably connected to the two limiting bar grooves (302), the tops of the two bar blocks (301) are respectively fixedly mounted with reinforcing inclined plates (304), and the sides of the two reinforcing inclined plates (304) close to each other are respectively in contact with the two T-shaped slide plates (204).

4. A low voltage motor fault detection and analysis device according to claim 3, characterized in that: A transmission mechanism (4) is provided in the detection box (1), and the transmission mechanism (4) comprises an air box (401) fixedly mounted on the inner wall of the bottom of the detection box (1), an extrusion plate (402) is slidably mounted in the air box (401), two clamping mechanisms (2) (403) are fixedly mounted on the top of the extrusion plate (402), a transmission plate (404) is fixedly mounted on the top of the two vertical plates (403), and the transmission plate (404) is in contact with the placement plate (201), and two shock-absorbing springs (405) are fixedly mounted on the inner wall of the bottom of the detection box (1), and the tops of the two shock-absorbing springs (405) are in contact with the placement plate (201).

5. A low voltage motor fault detection and analysis device according to claim 4, characterized in that: The back of the air box (401) is provided with two transmission mechanisms 2 (5), the transmission mechanism 2 (5) comprises an air outlet pipe (501) fixedly mounted on the back of the air box (401), a transmission air box (502) is fixedly mounted at the end of the air outlet pipe (501), the bottom of the transmission air box (502) is fixedly connected to the detection box (1), a transmission slide bar (503) is slidably mounted in the transmission air box (502), the front end of the transmission slide bar (503) extends outside the transmission air box (502), and a transmission block (504) is fixedly mounted at the front end of the transmission slide bar (503).

6. A low voltage motor fault detection and analysis device according to claim 5, characterized in that: The detection box (1) is provided with a sealing mechanism (6), the sealing mechanism (6) comprising a sealing groove (601) provided in the detection box (1), a sealing plate (602) being slidably mounted in the sealing groove (601), two strip-shaped limit grooves (603) being provided on the inner wall at the back side of the sealing groove (601), two connecting rectangular rods (604) being fixedly mounted on the back side of the sealing plate (602), the two connecting rectangular rods (604) respectively passing through the two strip-shaped limit grooves (603), and the ends of the two connecting rectangular rods (604) are respectively hinged to the two transmission blocks (504).

7. A low voltage motor fault detection and analysis device according to claim 6, characterized in that: The left and right sides of the detection box (1) are respectively provided with locking mechanisms (7), and the locking mechanism (7) comprises a mounting plate (701) fixedly mounted on the left side of the detection box (1); a rectangular slide bar (702) is slidably mounted on the mounting plate (701), and the rectangular slide bar (702) passes through the mounting plate (701); a trapezoidal block (703) is fixedly mounted on the bottom end of the rectangular slide bar (702), and the trapezoidal block (703) is matched with the fixed hollow block (506); a fixed circular plate (704) is fixedly sleeved on the rectangular slide bar (702); a locking spring (705) is sleeved on the rectangular slide bar (702), and the top end of the locking spring (705) is fixedly connected to the fixed circular plate (704), and the bottom end of the locking spring (705) is fixedly connected to the mounting plate (701).

8. A method for using a low-voltage motor fault detection and analysis device, using the low-voltage motor fault detection and analysis device as claimed in claim 7, characterized in that: The steps are as follows: S1: First, the placement plate (201) is pulled out, and the bottom of the placement plate (201) is in contact with the door frame at the top of the sealing groove (601) on the detection box (1). The low-voltage motor (202) is placed on the placement plate (201), and the low-voltage motor (202) is placed between the two clamping arc plates (206). The low-voltage motor (202) is temporarily fixed by the elastic force of the two clamping springs (207) and the clamping arc plates (206) to prevent the low-voltage motor (202) from rolling on the placement plate (201). Then, the placement plate (201) is pushed to put the placement plate (201) into the detection box (1). When the placement plate (201) drives the T-shaped slide plate (204) to move, the T-shaped slide plate (204) moves closely against the reinforcement inclined plate (304). Under the action of the inclined surface of the reinforcement inclined plate (304), the T-shaped slide plates (204) gradually approach each other along the reinforcement inclined plate (304). The T-shaped slide plate (204) drives the two telescopic rods (205) to contract. At this time, the two clamping springs (207) gradually compress and the two clamping arc plates (206) further clamp the low-voltage motor (202) through the compression force, so as to prevent the low-voltage motor (202) from shaking left and right during the operation of the low-voltage motor (202). S2: After the low-voltage motor (202) leaves the door frame at the top of the sealing groove (601) and enters the detection box (1), the low-voltage motor (202) will drive the placement plate (201) to descend under the action of gravity, and the placement plate (201) will contact the transmission plate (404), and the transmission plate (404) will contact the shock-absorbing spring (405). At this time, the transmission plate (404) will drive the vertical plate (403) and the shock-absorbing spring (405) to continue to descend during the descent process. When the vertical plate (403) descends to a certain height, it will stop descending. During the process of starting the low-voltage motor (202) for detection, the low-voltage motor (202) will shake vertically up and down. When the low-voltage motor (202) drives the transmission plate (404) to shake downward, the shock-absorbing spring (405) will absorb the shaking force generated by the descent of the transmission plate (404) to prevent the transmission plate (404) from hitting the top of the air box (401); S3: During the downward movement of the vertical plate (403), the extrusion plate (402) will be driven to descend. The extrusion plate (402) will discharge the gas in the air box (401) through the two air outlet pipes (501). The gas will enter the transmission air box (502) through the air outlet pipe (501). The gas will push the transmission slide rod (503) in the transmission air box (502) to move towards the direction close to the sealing groove (601). The transmission slide rod (503) drives the transmission block (504) to move. The transmission block (504) will drive the connecting rectangular rod (604) to move upward. The connecting rectangular rod (604) drives the sealing plate (602) to move upward from the sealing groove (601) and seal the detection box (1), thereby protecting the low-voltage motor (202) and extending the service life of the low-voltage motor (202). When opening the detection box (1), push the two U-shaped transmission round rods (505). The U-shaped transmission round rods (505) will drive the fixed hollow block (506) to move. When the fixed hollow block (506) contacts the trapezoidal block (703), it will drive the trapezoidal block (703) to rise under the action of the inclined surface of the trapezoidal block (703). At this time, the locking spring (705) undergoes compressive deformation. After the trapezoidal block (703) passes through the fixed hollow block (506), the locking spring (705) will push the trapezoidal block (703) to snap into the fixed hollow block (506) under the action of elastic force. At this time, the placement plate (201) drives the low-voltage motor (202) to rise to the same height as the door frame at the top of the sealing groove (601), and pulling out the low-voltage motor (202) can replace the low-voltage motor (202) and continue the next detection work; S4: When detecting the low-voltage motor (202), start the low-voltage motor (202). During the movement of the low-voltage motor (202), since the left and right of the low-voltage motor (202) are restricted, the low-voltage motor (202) will only produce vertical up-and-down shaking. If there is no problem with the bearing of the low-voltage motor (202), the shaking amplitude generated during the operation of the low-voltage motor (202) will not contact the limit slide plate (104). If the shaking generated during the operation of the low-voltage motor (202) contacts the limit slide plate (104), the limit slide plate (104) will drive the connecting rod (105) to move under the action of the shaking of the low-voltage motor (202). The connecting rod (105) will drive the rectangular slider (102) to move towards the direction close to the sealing groove (601). The rectangular slider (102) will drive the slide rod (106) to slide out of the detection box (1). The slide rod (106) will drive the circular detection plate (107) to move away from the detection box (1) in the transparent scale block (108). At this time, it can be determined that there is a problem with the bearing of the low-voltage motor (202).

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