Motor operation state fault detection device

Abstract

The utility model provides a motor operation state fault detection device, which relates to the technical field of motor detection, and comprises a detection table, the upper surface of the detection table is fixedly connected with symmetrically distributed supporting blocks, the upper surfaces of the two supporting blocks are fixedly connected with mounting blocks, the opposite surfaces of the two supporting blocks are provided with symmetrically distributed chutes, and the mounting blocks are fixedly connected with the mounting blocks. Sliding blocks are slidably connected to the inner walls of the sliding grooves, height adjusting blocks are fixedly connected to the surfaces of the opposite sides of the two sliding blocks, and rotating cylinders are installed on the inner walls of the height adjusting blocks through bearings. When the device is used, the rotating speed and the operating temperature of a detected motor can be detected, use is convenient, and the efficiency is effectively improved; and whether the motor is mechanically damaged or not can be accurately detected through the vibration state of the detected motor, the device does not depend on the experience of workers, the judgment accuracy is improved, and the device can adapt to the detected motors with different sizes through the arrangement of the height adjusting block.

Description

Technical Field

[0001] This utility model relates to the field of motor testing technology, and in particular to a motor operating status fault detection device. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. It is widely used in industrial production and daily life. Structurally, an electric motor mainly consists of two parts: the stator and the rotor. The stator typically includes the stator core, stator windings, and frame. There are many types of electric motors, which can be classified into DC motors and AC motors according to the power supply type. When an electric motor leaves the factory or is under maintenance, its speed, temperature under operating conditions, etc., need to be tested. Furthermore, the vibration state of the motor during operation is used to determine whether there is any damage to the internal structure of the motor.

[0003] Existing technologies require multiple tools to detect motor speed and operating temperature, making the testing process cumbersome and inefficient. Furthermore, the assessment of motor vibration largely relies on the experience of the operators, which cannot accurately determine whether there is damage to the internal structure.

[0004] Therefore, we propose a fault detection device for motor operating status. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies. Existing technologies require multiple tools to detect motor speed, operating temperature, etc., making the detection work very cumbersome and inefficient. Furthermore, the judgment of motor vibration status largely relies on the experience of the operators, which cannot accurately determine whether there is damage to the internal structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A motor operation status fault detection device includes a detection platform. Symmetrically distributed support blocks are fixedly connected to the upper surface of the detection platform. Mounting blocks are fixedly connected to the upper surfaces of two of the support blocks. Symmetrically distributed sliding grooves are formed on the opposing surfaces of the two support blocks. Sliding blocks are slidably connected to the inner walls of the sliding grooves. Height adjustment blocks are fixedly connected to the opposing side surfaces of the two sliding blocks. A rotating cylinder is mounted on the inner wall of the height adjustment block via a bearing. Symmetrically distributed mounting holes are formed on the outer surface of the rotating cylinder. An electric telescopic rod is fixedly mounted on the inner wall of each mounting hole. A fixing block is fixedly connected to one end of the electric telescopic rod.

[0008] A magnetic element is fixedly sleeved on the outer surface of the rotating drum, and a magnetic speed measuring instrument is fixedly installed on the upper surface of the testing platform.

[0009] Preferably, the inner wall of the mounting block is externally threaded and sleeved with a lead screw, one end of the lead screw is fixedly connected with a rotating disc.

[0010] Preferably, the other end of the lead screw is externally threaded and sleeved with a bearing, the upper surface of the height adjusting block is fixedly installed with an acceleration sensor arranged in a rectangular array.

[0011] Preferably, the upper surface of the detection table is fixedly installed with an infrared temperature detector through a mounting rod, the inner bottom wall of the detection table is fixedly installed with a servo motor, the output shaft of the servo motor is fixedly connected with a rotating shaft through a shaft coupling.

[0012] Preferably, the outer surface of one end of the rotating shaft is fixedly sleeved with a first gear, the front inner wall and the rear inner wall of the detection table are both installed with a bidirectional threaded rod through a bearing, the outer surface of the bidirectional threaded rod is externally threaded and sleeved with a moving block arranged in a symmetrical manner.

[0013] Preferably, the outer surface of the bidirectional threaded rod is fixedly sleeved with a second gear, the tooth surface of the second gear is engaged with the tooth surface of the first gear, the upper surface of the detection table is provided with a moving groove arranged in a symmetrical manner.

[0014] Preferably, the inner wall of the moving groove is in contact with the outer surface of the moving block, the upper surface of the moving block is fixedly connected with a clamping block, the front surface of the clamping block is fixedly connected with an anti-skid pad, the lower surface of the detection table is fixedly connected with a support spring arranged in a rectangular array, one end of each of the plurality of support springs is fixedly connected with a base, and the inner wall of the base is movably sleeved with the outer surface of the detection table.

[0015] Compared with the prior art, the motor running state fault detection device has the following beneficial effects:

[0016] The device can detect the rotating speed and operating temperature of the detected motor, is convenient to use, has effectively improved efficiency, can accurately detect whether the motor has mechanical damage through the vibration state of the detected motor, does not depend on the experience of workers, improves the accuracy of judgment, and through the height adjusting block, the device can adapt to different sizes of the detected motor. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A main structure schematic view of the motor running state fault detection device is provided.

[0018] Figure 2 A detection table structure sectional view of the motor running state fault detection device is provided.

[0019] Figure 3The utility model provides a kind of motor operating state fault detection device's height adjustment block structure perspective view is provided;

[0020] Figure 4 The utility model provides a kind of motor operating state fault detection device's rotary drum structure sectional view.

[0021] Legend: 1, detection platform;2, support block;3, mounting block;4, sliding slot;5, sliding block;6, height adjustment block;7, rotary drum;8, mounting hole;9, electric telescopic rod;10, fixed block;11, magnetic element;12, magnetic speed detection table;13, screw;14, rotary table;15, acceleration sensor;16, infrared temperature detector;17, servo motor;18, rotating shaft;19, first gear;20, two-way threaded rod;21, moving block;22, second gear;23, moving groove;24, clamping block;25, non-slip pad;26, support spring;27, base. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] In order to facilitate understanding of the utility model, the utility model will be described more fully with reference to the related, a number of embodiments of the utility model are given, however, the utility model can be realized in many different forms, and is not limited to the embodiments described in the text, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on another element or there can be a middle element, when an element is referred to as "connected to" another element, it can be directly connected to another element or there can be a middle element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terms used in the specification of the utility model are only for the purpose of describing specific embodiments, and are not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] Embodiment 1

[0027] As Figures 1-4 shown, the utility model provides a technical scheme: including detection platform 1, the upper surface fixedly connected with the support block 2 of symmetrical distribution of detection platform 1, the upper surface of two support blocks 2 is fixedly connected with mounting block 3, the opposite surface of two support blocks 2 is opened with the sliding slot 4 of symmetrical distribution, the inner wall of sliding slot 4 is connected with the sliding block 5, the opposite side surface of two sliding blocks 5 is fixedly connected with height adjustment block 6, through the setting of height adjustment block 6, can adapt to the motor of different sizes of being detected, the inner wall of height adjustment block 6 is installed with rotary drum 7 through bearing, the outer surface of rotary drum 7 is opened with the mounting hole 8 of symmetrical distribution, the inner wall of mounting hole 8 is fixedly installed with electric telescopic rod 9, one end of electric telescopic rod 9 is fixedly connected with fixed block 10;

[0028] The outer surface of rotary drum 7 is fixedly sleeved with magnetic element 11, the upper surface of detection platform 1 is fixedly installed with magnetic speed detection table 12, and the magnetic speed detection table 12 mainly utilizes electromagnetic induction principle. It has a rotating magnetic element, when the motor shaft drives the rotation of the magnetic element, an alternating induced electromotive force will be generated in the induction coil around it. The frequency of the induced electromotive force is directly proportional to the rotational speed of the magnetic element, i.e. the motor speed. By measuring the frequency of the induced electromotive force, the motor speed can be calculated.

[0029] Embodiment 2

[0030] As Figures 1-4 shown, the utility model provides a technical scheme: the inner wall of mounting block 3 is screwed with lead screw 13, one end of lead screw 13 is fixedly connected with rotary disc 14.

[0031] The other end of lead screw 13 is installed on the upper surface of height adjustment block 6 through a bearing, and the upper surface of detection platform 1 is fixedly installed with acceleration sensor 15 arranged in a rectangular array. According to the vibration intensity and frequency range of the motor, select the appropriate measurement range, generally ±10g or ±50g, etc.

[0032] The upper surface of detection platform 1 is fixedly installed with infrared temperature detector 16 through mounting rod, the inner bottom wall of detection platform 1 is fixedly installed with servo motor 17, and the output shaft of servo motor 17 is fixedly connected with rotating shaft 18 through a shaft coupling.

[0033] The outer surface of one end of rotating shaft 18 is fixedly sleeved with first gear 19, the front inner wall and the rear inner wall of detection platform 1 are both installed with bidirectional threaded rod 20 through a bearing, and the outer surface of bidirectional threaded rod 20 is screwed with moving block 21 arranged in a symmetrical manner.

[0034] The outer surface of the bidirectional screw rod 20 is fixedly sleeved with a second gear 22, the tooth surface of the second gear 22 is engaged with the tooth surface of the first gear 19, and the upper surface of the detection table 1 is provided with symmetrically distributed moving grooves 23.

[0035] The inner wall of the moving groove 23 is in contact with the outer surface of the moving block 21, the upper surface of the moving block 21 is fixedly connected with a clamping block 24, the front surface of the clamping block 24 is fixedly connected with an antiskid pad 25, the lower surface of the detection table 1 is fixedly connected with support springs 26 in a rectangular array, one end of each of the plurality of support springs 26 is fixedly connected with a base 27, and the inner wall of the base 27 is movably sleeved with the outer surface of the detection table 1.

[0036] The device can detect the rotation speed and operating temperature of the detected motor, is convenient to use, has high efficiency, can accurately detect whether the motor is mechanically damaged through the vibration state of the detected motor, does not depend on the experience of workers, improves the accuracy of judgment, and can adapt to detected motors of different sizes through the height adjusting block.

[0037] The working process of the device is as follows:

[0038] Step one, place the motor to be detected on the detection table 1, rotate the turntable 14, and move the height adjusting block 6 through the screw rod 13 under the cooperation of the sliding groove 4 and the sliding block 5, so as to adjust the height of the rotating drum 7, so that the central axis of the rotating drum 7 is consistent with the central axis of the output shaft of the detected motor, adjust the position of the detected motor again, so that the output shaft of the detected motor is located in the rotating drum 7, start the servo motor 17, drive the first gear 19 to rotate through the rotating shaft 18, drive the second gear 22 to rotate through the engagement, and drive the bidirectional screw rod 20 to rotate, the rotation of the bidirectional screw rod 20 drives the two clamping blocks 24 to move relatively through the moving block 21, so as to clamp and fix the detected motor;

[0039] Step two, start the electric telescopic rod 9, drive the two fixed blocks 10 to move relatively, fix the output shaft of the detected motor firmly, start the detected motor, drive the rotating drum 7 to rotate through the fixed block 10, so as to drive the magnetic element 11 to rotate, when the magnetic element 11 rotates, an alternating induced electromotive force will be generated in the induction coil around the magnetic element 11, the magnetic rotation speed detection table 12 will detect the change of the magnetic field and generate a corresponding electric signal, so as to detect the rotation speed of the detected motor, and in the detection process, the temperature of the detected motor in the running process is measured by the infrared temperature detector 16, when the motor has mechanical faults such as bearing wear, rotor imbalance and shaft bending, the vibration will be intensified, and the vibration characteristics will also change, the acceleration sensor 15 converts the vibration acceleration of the motor into an electric signal, so as to detect the vibration amplitude and frequency of the detected motor and judge whether there is a fault in the motor.

[0040] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the present application, which should be limited only by the appended claims and their equivalents.

Claims

1. A device for detecting a fault in the operating state of an electric machine, comprising a detection station (1), characterized in that: The upper surface of the detection platform (1) is fixedly connected with symmetrically distributed support blocks (2), the upper surfaces of the two support blocks (2) are fixedly connected with mounting blocks (3), the opposite surfaces of the two support blocks (2) are provided with symmetrically distributed sliding grooves (4), the inner walls of the sliding grooves (4) are slidably connected with sliding blocks (5), the opposite side surfaces of the two sliding blocks (5) are fixedly connected with height adjusting blocks (6), the inner walls of the height adjusting blocks (6) are rotatably connected with rotating cylinders (7) through bearings, the outer surfaces of the rotating cylinders (7) are provided with symmetrically distributed mounting holes (8), the inner walls of the mounting holes (8) are fixedly connected with electric telescopic rods (9), one end of each electric telescopic rod (9) is fixedly connected with a fixed block (10). The outer surface of the rotating cylinder (7) is fixedly sleeved with a magnetic element (11), and the upper surface of the detection platform (1) is fixedly connected with a magnetic rotating speed detection table (12).

2. A machine operating condition fault detection apparatus according to claim 1, characterised in that: The inner walls of the mounting blocks (3) are threadedly sleeved with lead screws (13), and one end of each lead screw (13) is fixedly connected with a rotating disc (14).

3. An apparatus for detecting a fault in a motor operating condition according to claim 2, characterized in that: The other end of each lead screw (13) is rotatably connected with the upper surface of the height adjusting block (6) through a bearing, and the upper surface of the detection platform (1) is fixedly connected with acceleration sensors (15) arranged in a rectangular array.

4. An apparatus for detecting a fault in a motor operating condition according to claim 3, characterized in that: The upper surface of the detection platform (1) is fixedly connected with an infrared temperature detector (16) through a mounting rod, the inner bottom wall of the detection platform (1) is fixedly connected with a servo motor (17), and the output shaft of the servo motor (17) is fixedly connected with a rotating shaft (18) through a shaft coupling.

5. An apparatus for detecting a fault in a motor operating condition according to claim 4, characterized in that: One end of the rotating shaft (18) is fixedly sleeved with a first gear (19), the front inner wall and the rear inner wall of the detection platform (1) are rotatably connected with bidirectional threaded rods (20) through bearings, and the outer surfaces of the bidirectional threaded rods (20) are fixedly sleeved with symmetrically distributed moving blocks (21).

6. An apparatus for detecting a fault in a motor operating condition according to claim 5, characterized in that: The outer surfaces of the bidirectional threaded rods (20) are fixedly sleeved with second gears (22), the tooth surfaces of the second gears (22) are engaged with the tooth surfaces of the first gears (19), and the upper surface of the detection platform (1) is provided with symmetrically distributed moving grooves (23).

7. An apparatus for detecting a fault in a motor operating condition according to claim 6, characterized in that: The inner walls of the moving grooves (23) are in contact with the outer surfaces of the moving blocks (21), the upper surfaces of the moving blocks (21) are fixedly connected with clamping blocks (24), the front surfaces of the clamping blocks (24) are fixedly connected with anti-skid pads (25), the lower surface of the detection platform (1) is fixedly connected with support springs (26) arranged in a rectangular array, one end of each support spring (26) is fixedly connected with a base (27), and the inner walls of the bases (27) are movably sleeved with the outer surfaces of the detection platform (1).

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