A test device for three-phase asynchronous motor

Abstract

The present invention discloses a testing device for a three-phase asynchronous motor, comprising a box, a second control panel and a noise detector, wherein the first control panel is installed on the front of the box, the second control panel is installed on the outer wall of the box, and the noise detector is installed on the outer wall of the box. The present invention can detect the axial movement of the motor by installing an axial movement detector, inserting the output end of the motor into the inner ring, and the pulley contacts the output end of the motor. When the motor moves axially, the output end of the motor squeezes the pulley, the pulley squeezes the connecting rod, the detection rod moves, the conductive block contacts the conductive slot, and the circuit is connected, indicating that the motor has axial movement, thereby realizing the detection function. The device only needs to insert the output end of the motor into the interior of the axial movement detector to perform detection, and does not require manual measurement by the staff, thereby increasing the detection efficiency and reducing the burden on the staff.

Description

Technical Field

[0001] The invention relates to the technical field of motor detection, in particular to a testing device for a three-phase asynchronous motor. Background Art

[0002] The speed of the rotor of the three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion between the rotor winding and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to achieve energy conversion. It has the advantages of simple structure, reliable operation, and low price. After the motor is manufactured or fails during use, it needs to be detected by detection equipment. Therefore, the detection accuracy of the detection equipment is an important factor in improving the quality of the motor.

[0003] The defects of the existing three-phase asynchronous motor test device are:

[0004] 1. When the existing three-phase asynchronous motor test device performs axial movement detection, most of them require the staff to calculate the axis, or put the device on the output end of the motor, which is not convenient and the detection effect is poor;

[0005] 2. Most of the existing three-phase asynchronous motor test devices do not have a fixed structure. Most of the detection devices rely on the motor's own gravity to achieve fixation, but the motor will vibrate during operation, affecting the detection results. Summary of the invention

[0006] The object of the present invention is to provide a testing device for a three-phase asynchronous motor to solve the problems of inconvenience and fixed structure proposed in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a testing device for a three-phase asynchronous motor, comprising a box, a second control panel and a noise detector, wherein the first control panel is installed on the front of the box, the second control panel is installed on the outer wall of the box, the noise detector is installed on the outer wall of the box, and the noise detector is located below the second control panel.

[0008] Preferably, a detection line is installed on the outer wall of the box, a test pen is installed on one end of the detection line, and a first support plate is installed on the outer wall of the box, and the first support plate is located below the noise detector.

[0009] Preferably, the inner wall of the noise detector is installed with a fixing groove, the inner wall of the fixing groove is installed with a metal sheet, the bottom of the metal sheet is installed with a lightweight rod, the outer wall of the lightweight rod is surrounded by a coil, the inner wall of the noise detector is installed with a magnet, and the magnet is located below the fixing groove, the inner wall of the noise detector is installed with a current amplifier, and the current amplifier is electrically connected to the coil through a wire, the current amplifier is located below the magnet, and the inner wall of the noise detector is installed with a signal light, and the signal light is located below the current amplifier.

[0010] Preferably, an axial movement detector is installed on the front of the box, and the axial movement detector is located below the first control panel, and a second support plate is installed on the front of the box, and the second support plate is located below the axial movement detector.

[0011] Preferably, an inner ring is installed on the inner wall of the axial movement detector, a connecting rod is installed on the outer wall of the inner ring, a pulley is installed on one end of the connecting rod, a spring is installed on the other end of the connecting rod, and one end of the spring is connected to the inner wall of the axial movement detector, a detection rod is installed on the outer wall of the connecting rod, a conductive block is installed on the top of the detection rod, and a conductive groove is installed on the inner wall of the axial movement detector.

[0012] Preferably, a groove is provided on the top of the second support plate, a plurality of rollers are installed on the inner bottom wall of the groove, a clamping plate is installed on the top of the second support plate, a stabilizing column is installed on the outer wall of the clamping plate, and one end of the stabilizing column extends into the interior of the clamping plate, a buffer spring is installed on the inner wall of the clamping plate, and one end of the buffer spring is connected to one end of the stabilizing column, a protective pad is installed on the other end of the stabilizing column, an electric telescopic rod is also installed on the outer wall of the clamping plate, and a plurality of reserved holes are provided on the top of the second support plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention can detect the axial movement of the motor by installing an axial movement detector. When detecting the axial movement of the motor, the output end of the motor is inserted into the inner ring, the pulley contacts the output end of the motor, and the motor is started. When the motor has axial movement, the output end of the motor squeezes the pulley, the pulley squeezes the connecting rod, the connecting rod squeezes the spring, the spring contracts, the detection rod moves, the conductive block contacts the conductive slot, the circuit is connected, indicating that the motor has axial movement, and the detection function is realized. The device only needs to insert the output end of the motor into the interior of the axial movement detector to perform detection, and does not require manual measurement by the staff, thereby increasing the detection efficiency and reducing the burden on the staff;

[0015] 2. The present invention can fix the motor by installing a second support plate. If the motor is equipped with a mounting hole, the motor can be fixed inside the reserved hole by bolts. If the motor has no fixing structure, the electric telescopic rod is started, and the electric telescopic rod drives the clamping plate to move. The clamping plate slides inside the groove, and the roller reduces the friction. The stabilizing column contacts the outer wall of the motor. The protective pad can prevent the stabilizing column from damaging the motor. The stabilizing column squeezes the buffer spring to prevent the clamping plate from being damaged. The motor is fixed to the second support plate by the stabilizing column to achieve the fixing function of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the clamping plate part of the present invention;

[0018] Figure 3 It is a partial structural schematic diagram of the noise detector of the present invention;

[0019] Figure 4 It is a partial structural schematic diagram of the axial movement detector of the present invention;

[0020] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of part A;

[0021] Figure 6 It is a schematic diagram of the structure of the fixing plate part of the present invention.

[0022] In the figure: 1. box body; 101. first control panel; 2. second control panel; 201. detection line; 202. first support plate; 3. noise detector; 301. fixing groove; 302. coil; 303. magnet; 304. current amplifier; 305. signal light; 4. axial movement detector; 401. inner ring; 402. pulley; 403. connecting rod; 404. spring; 405. detection rod; 406. conductive groove; 5. second support plate; 501. clamping plate; 502. stabilizing column; 503. protection pad; 504. buffer spring; 505. groove; 506. reserved hole; 507. roller; 508. electric telescopic rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-Figure 6 An embodiment of the present invention is: a test device for a three-phase asynchronous motor, comprising a box body 1, a second control panel 2 and a noise detector 3. A first control panel 101 is installed on the front of the box body 1, and the box body 1 can protect the internal device from damage to achieve a protection effect. The first control panel 101 can display the detection result of axial movement. A second control panel 2 is installed on the outer wall of the box body 1. The second control panel 2 can display the result of whether the motor housing is energized. A noise detector 3 is installed on the outer wall of the box body 1, and the noise detector 3 is located below the second control panel 2. The noise detector 3 can detect the noise generated by the motor.

[0027] Furthermore, a detection line 201 is installed on the outer wall of the box body 1, and a test pen is installed on one end of the detection line 201. A first support plate 202 is installed on the outer wall of the box body 1, and the first support plate 202 is located below the noise detector 3. When performing a leakage test on the motor casing, the staff holds the test pen, and the test pen contacts the motor casing. By checking the second control panel 2, it can be detected whether the motor is leaking, thereby realizing the detection function. The detection line 201 can facilitate the movement of the test pen, and the first support plate 202 can support the motor to realize the support function.

[0028] Further, the inner wall of the noise detector 3 is installed with a fixing groove 301, the inner wall of the fixing groove 301 is installed with a metal sheet, the bottom of the metal sheet is installed with a light rod, the outer wall of the light rod is surrounded by a coil 302, the inner wall of the noise detector 3 is installed with a magnet 303, and the magnet 303 is located below the fixing groove 301, the inner wall of the noise detector 3 is installed with a current amplifier 304, and the current amplifier 304 is electrically connected to the coil 302 through a wire, and the current amplifier 304 is located below the magnet 303, and the inner wall of the noise detector 3 is installed with a signal lamp 305, and the signal light 305 is located below the current amplifier 304, the motor is placed on the first support plate 202, the motor is powered on and started, the sound passes through the metal sheet, the metal sheet vibrates, the metal sheet drives the lightweight rod to move, the lightweight rod drives the coil 302 to cut the magnetic flux lines, the magnet 303 can generate a magnetic field, and an induced current is generated in the coil 302. After the current is amplified by the current amplifier 304, the signal light 305 lights up according to the strength of the noise, realizing the function of detecting noise, and the fixing groove 301 can fix the metal sheet to realize the fixing function.

[0029] Furthermore, an axial movement detector 4 is installed on the front of the box body 1, and the axial movement detector 4 is located below the first control panel 101. A second support plate 5 is installed on the front of the box body 1, and the second support plate 5 is located below the axial movement detector 4. The axial movement detector 4 can detect the axial movement of the motor, and the second support plate 5 can support the motor to realize the supporting function.

[0030] Furthermore, an inner ring 401 is installed on the inner wall of the axial movement detector 4, a connecting rod 403 is installed on the outer wall of the inner ring 401, a pulley 402 is installed on one end of the connecting rod 403, a spring 404 is installed on the other end of the connecting rod 403, and one end of the spring 404 is connected to the inner wall of the axial movement detector 4, a detection rod 405 is installed on the outer wall of the connecting rod 403, a conductive block is installed on the top of the detection rod 405, and a conductive slot 406 is installed on the inner wall of the axial movement detector 4. When detecting the axial movement of the motor, the output end of the motor is inserted into the inner ring 401, and the pulley 402 is installed on the other end of the connecting rod 403. 02 contacts with the output end of the motor, starts the motor, and when the motor moves axially, the output end of the motor squeezes the pulley 402, the pulley 402 squeezes the connecting rod 403, the connecting rod 403 squeezes the spring 404, the spring 404 contracts, the detection rod 405 moves, the conductive block contacts with the conductive slot 406, and the circuit is connected, indicating that the motor has axial movement, thereby realizing the detection function. The device only needs to insert the output end of the motor into the interior of the axial movement detector 4 to perform detection, and does not require manual measurement by the staff, thereby increasing the detection efficiency and reducing the burden on the staff.

[0031] Furthermore, a groove 505 is provided on the top of the second support plate 5, and a plurality of rollers 507 are installed on the inner bottom wall of the groove 505. A clamping plate 501 is installed on the top of the second support plate 5, and a stabilizing column 502 is installed on the outer wall of the clamping plate 501, and one end of the stabilizing column 502 extends into the interior of the clamping plate 501. A buffer spring 504 is installed on the inner wall of the clamping plate 501, and one end of the buffer spring 504 is connected to one end of the stabilizing column 502, and a protective pad 503 is installed on the other end of the stabilizing column 502. An electric telescopic rod 508 is also installed on the outer wall of the clamping plate 501. A plurality of reserved holes 506 are provided on the top of the second support plate 5. The machine is placed on the top of the second support plate 5. If the motor is equipped with a mounting hole, the motor can be fixed to the inside of the reserved hole 506 by bolts. If the motor has no fixed structure, the electric telescopic rod 508 is started, and the electric telescopic rod 508 drives the clamping plate 501 to move. The clamping plate 501 slides inside the groove 505, and the roller 507 reduces the friction. The stabilizing column 502 contacts the outer wall of the motor. The protective pad 503 can prevent the stabilizing column 502 from damaging the motor. The stabilizing column 502 squeezes the buffer spring 504 to prevent the clamping plate 501 from being damaged. The motor is fixed to the second support plate 5 by the stabilizing column 502 to achieve the fixing function of the motor.

[0032] Working principle: first, place the motor on the top of the second support plate 5. If the motor is equipped with a mounting hole, the motor can be fixed to the inside of the reserved hole 506 by bolts. If the motor has no fixed structure, start the electric telescopic rod 508. The electric telescopic rod 508 drives the clamping plate 501 to move. The clamping plate 501 slides inside the groove 505. The roller 507 reduces the friction. The stabilizing column 502 contacts the outer wall of the motor. The protective pad 503 can prevent the stabilizing column 502 from damaging the motor. The stabilizing column 502 squeezes the buffer spring 504 to prevent the clamping plate 501 from being damaged. The motor is fixed to the second support plate 5 through the stabilizing column 502 to achieve the fixing function of the motor. Then, the output end of the motor is inserted into the inner ring 401. The pulley 402 contacts the output end of the motor. Start the motor. When the motor moves axially, the output end of the motor squeezes the pulley 402. 2 squeezes the connecting rod 403, the connecting rod 403 squeezes the spring 404, the spring 404 contracts, the detection rod 405 moves, the conductive block contacts the conductive slot 406, and the circuit is connected, indicating that the motor has axial movement, realizing the detection function. The device only needs to insert the output end of the motor into the interior of the axial movement detector 4 to perform detection, and does not require manual measurement by the staff, thereby increasing the detection efficiency and reducing the burden on the staff. Then, the motor is powered on and started, the sound passes through the metal sheet, the metal sheet vibrates, the metal sheet drives the lightweight rod to move, the lightweight rod drives the coil 302 to cut the magnetic flux lines, the magnet 303 can generate a magnetic field, and an induced current is generated in the coil 302. After the current is amplified by the current amplifier 304, the signal light 305 lights up according to the strength of the noise, realizing the function of detecting noise, and the fixing slot 301 can fix the metal sheet to realize the fixing function.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A three-phase asynchronous motor test device, comprising a housing (1), a second control panel (2) and a noise detector (3), characterized in that: A first control panel (101) is installed on the front of the box (1), a second control panel (2) is installed on the outer wall of the box (1), a noise detector (3) is installed on the outer wall of the box (1), and the noise detector (3) is located below the second control panel (2); An axial movement detector (4) is installed on the front of the box (1), and the axial movement detector (4) is located below the first control panel (101); a second support plate (5) is installed on the front of the box (1), and the second support plate (5) is located below the axial movement detector (4); The top of the second support plate (5) is provided with a groove (505), and a plurality of rollers (507) are installed on the inner bottom wall of the groove (505); the top of the second support plate (5) is provided with a clamping plate (501), the outer wall of the clamping plate (501) is provided with a stabilizing column (502), and one end of the stabilizing column (502) extends into the interior of the clamping plate (501); the inner wall of the clamping plate (501) is provided with a buffer spring (504), and one end of the buffer spring (504) is connected to one end of the stabilizing column (502), and the other end of the stabilizing column (502) is provided with a protective pad (503); the outer wall of the clamping plate (501) is also provided with an electric telescopic rod (508), and the top of the second support plate (5) is provided with a plurality of reserved holes (506).

2. A three-phase asynchronous motor testing device according to claim 1, characterized in that: The outer wall of the box (1) is installed with a detection line (201), one end of the detection line (201) is installed with a test pen, and the outer wall of the box (1) is installed with a first support plate (202), and the first support plate (202) is located below the noise detector (3).

3. A three-phase asynchronous motor testing device according to claim 1, characterized in that: The inner wall of the noise detector (3) is provided with a fixing groove (301), the inner wall of the fixing groove (301) is provided with a metal sheet, the bottom of the metal sheet is provided with a light rod, the outer wall of the light rod is provided with a coil (302) around it, the inner wall of the noise detector (3) is provided with a magnet (303), and the magnet (303) is located below the fixing groove (301), the inner wall of the noise detector (3) is provided with a current amplifier (304), and the current amplifier (304) is electrically connected to the coil (302) via a wire, and the current amplifier (304) is located below the magnet (303), and the inner wall of the noise detector (3) is provided with a signal light (305), and the signal light (305) is located below the current amplifier (304).

4. A three-phase asynchronous motor testing device according to claim 1, characterized in that: The inner wall of the axial movement detector (4) is installed with an inner ring (401), the outer wall of the inner ring (401) is installed with a connecting rod (403), one end of the connecting rod (403) is installed with a pulley (402), the other end of the connecting rod (403) is installed with a spring (404), and one end of the spring (404) is connected to the inner wall of the axial movement detector (4), the outer wall of the connecting rod (403) is installed with a detection rod (405), the top of the detection rod (405) is installed with a conductive block, and the inner wall of the axial movement detector (4) is installed with a conductive groove (406).

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