Testing device for operation noise and abnormal sound of motor

Abstract

The utility model discloses a testing device for motor operation noise and abnormal sound, which relates to the technical field of motor detection and comprises a device base, a sealing box body is arranged at the upper end of the device base, and a sealing box door is arranged on the outer side of the sealing box body. A testing device for motor operation noise and abnormal sound is characterized in that the output end of a to-be-detected motor is inserted into a sleeve seat, the output end of a clamping cylinder is controlled to drive a pressure sensor and a clamping plate for clamping, and when the clamping plate is in contact with the output end of the to-be-detected motor, the clamping pressure is monitored in real time through the pressure sensor; and when a set interval value is reached, the output end of the clamping cylinder can be controlled to stop running and keep in situ, so that the output end of the to-be-detected motor is clamped, the tight connection between the output end of the to-be-detected motor and the middle shaft is ensured, and the output end of the to-be-detected motor is prevented from shaking in the rotating process.

Description

Technical Field

[0001] The utility model relates to the technical field of motor detection, in particular to a test device for motor running noise and abnormal noise. Background Technique

[0002] An electric machine, commonly known as a motor, is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. An electric machine generally includes a stator and a rotor. The stator includes a stator core and a coil winding wound around the stator core. The rotor includes a rotating shaft and a rotor core sleeved on the rotating shaft. A permanent magnet is provided on the outer edge of the rotor core. Electric machines are generally divided into DC motors and AC motors. During operation, noise and abnormal noise may occur, which can be used to further judge whether there is a problem with the micro-motor. The existing judgment is mostly by manual listening, which has relatively high requirements for the inspector and the detection environment and is prone to errors.

[0003] During the use of the existing publicly patented motor noise test device (publication number: CN214843612U), although it can detect the noise generated by the motor, during the installation and connection process of the motor, it is necessary to connect its output end to the central axis through a coupling, which is time-consuming and laborious and cannot automatically clamp it. Therefore, the utility model proposes a test device for motor running noise and abnormal noise. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a test device for motor running noise and abnormal noise, which solves the problems raised in the above background technique.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A test device for motor running noise and abnormal noise includes a device base. A sealed box body is arranged at the upper end of the device base. A sealed box door is arranged on the outer side of the sealed box body. A dynamometer and a control panel are arranged at the upper end of the device base. The output end of the dynamometer is connected to a central axis. A sealed bearing is arranged on the outer side of the central axis. One end of the central axis is connected to an automatic clamping component. A positioning seat and a support frame are arranged inside the device base. A pressing cylinder is arranged at the upper end of the support frame. A lower pressing plate is arranged at the output end of the pressing cylinder. A motor to be detected and a decibel collector are arranged inside the device base.

[0006] The automatic clamping component includes a sleeve seat. A moving hole and a guiding hole are arranged on the outer side of the sleeve seat. A clamping cylinder is arranged on one side of the sleeve seat. A pressure sensor and a clamping plate are arranged at the output end of the clamping cylinder. An infrared sensor and an anti-slip strip are arranged on one side of the clamping plate.

[0007] As a further technical solution of the present utility model, the device base and the sealed box body are fixedly connected, a hinge is provided between the sealed box body and the sealed box door, the output end of the dynamometer and the central shaft are fixedly connected, and the central shaft and the sealed bearing are movably connected.

[0008] As a further technical solution of the present utility model, the output end of the motor to be detected and the central shaft are connected through an automatic clamping assembly, a buffer pad is provided at the upper end of the positioning seat, the output end of the pressing cylinder and the lower pressing plate are fixedly connected, control buttons are provided at the upper end of the control panel, and a control circuit board and a battery are provided inside the control panel. The control circuit board and the decibel collector are electrically connected.

[0009] As a further technical solution of the present utility model, the sleeve seat and the central shaft are fixedly connected, the moving hole and the guiding hole both penetrate through the middle of the sleeve seat, the diameter of the moving hole is larger than that of the guiding hole, and the number of guiding holes is twice the number of moving holes.

[0010] As a further technical solution of the present utility model, the number of clamping plates is two groups and they are symmetrically distributed. The clamping plates are arc-shaped structures. The clamping cylinder and the sleeve seat are fixedly connected by bolts, and the output end of the clamping cylinder is adapted to the moving hole.

[0011] As a further technical solution of the present utility model, the output end of the clamping cylinder and the pressure sensor are fixedly connected, the detection end of the pressure sensor and the clamping plate are fixedly connected, the infrared sensor and the clamping plate are fixedly connected, and the number of anti-slip strips is several groups and they are distributed in an array.

[0012] The present utility model provides a test device for the running noise and abnormal noise of a motor. Compared with the prior art, it has the following beneficial effects:

[0013] The present design is a test device for the running noise and abnormal noise of a motor. By setting an automatic clamping assembly at the output end of the central shaft and the motor to be detected, the output end of the motor to be detected is inserted into the inside of the sleeve seat, and the output end of the clamping cylinder is controlled to drive the pressure sensor and the clamping plate to clamp. When the clamping plate contacts the output end of the motor to be detected, the clamping pressure is monitored in real time through the pressure sensor. When it reaches the set interval value, the output end of the clamping cylinder can be controlled to stop running and remain in place, thereby clamping the output end of the motor to be detected, ensuring the tightness of the connection between the output end of the motor to be detected and the central shaft, avoiding shaking of the output end of the motor to be detected during rotation, and eliminating the need to connect the output end of the motor to be detected and the central shaft through a coupling, which saves time and effort and enables automatic clamping. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a test device for the running noise and abnormal noise of a motor;

[0015] Figure 2 It is a schematic partial structural diagram of a test device for the running noise and abnormal noise of a motor;

[0016] Figure 3 It is a partial exploded view of a test device for the running noise and abnormal noise of a motor;

[0017] Figure 4 It is a test device for the running noise and abnormal noise of a motor Figure 3 The enlarged view of A in;

[0018] Figure 5 It is a partial side sectional view of a test device for the running noise and abnormal noise of a motor.

[0019] In the figure: 1, device base; 2, sealed box body; 3, sealed box door; 4, dynamometer; 5, central shaft; 6, sealed bearing; 7, automatic clamping assembly; 71, sleeve seat; 72, moving hole; 73, guiding hole; 74, clamping plate; 75, clamping cylinder; 76, pressure sensor; 77, infrared sensor; 78, anti-slip strip; 79, guiding rod; 8, positioning seat; 9, motor to be detected; 10, support frame; 11, downward pressing cylinder; 12, downward pressing plate; 13, decibel collector; 14, control panel. Specific embodiments

[0020] 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.

[0021] Please refer to Figures 1-5 , the present invention provides a technical solution for a test device for the running noise and abnormal noise of a motor: a test device for the running noise and abnormal noise of a motor, including a device base 1, a sealed box body 2 is arranged at the upper end of the device base 1, a sealed box door 3 is arranged outside the sealed box body 2, a dynamometer 4 and a control panel 14 are arranged at the upper end of the device base 1, the output end of the dynamometer 4 is connected with a central shaft 5, a sealed bearing 6 is arranged outside the central shaft 5, one end of the central shaft 5 is connected with an automatic clamping assembly 7, a positioning seat 8 and a support frame 10 are arranged inside the device base 1, a downward pressing cylinder 11 is arranged at the upper end of the support frame 10, a downward pressing plate 12 is arranged at the output end of the downward pressing cylinder 11, a motor to be detected 9 and a decibel collector 13 are arranged inside the device base 1;

[0022] Among them, the automatic clamping assembly 7 includes a sleeve seat 71. A moving hole 72 and a guiding hole 73 are formed on the outer side of the sleeve seat 71. A clamping cylinder 75 is arranged on one side of the sleeve seat 71. A pressure sensor 76 and a clamping plate 74 are arranged at the output end of the clamping cylinder 75. An infrared sensor 77 and an anti-slip strip 78 are arranged on one side of the clamping plate 74.

[0023] As Figures 1-3 shown, the device base 1 and the sealed box body 2 are fixedly connected. A hinge is arranged between the sealed box body 2 and the sealed box door 3. The output end of the dynamometer 4 and the central shaft 5 are fixedly connected. The central shaft 5 and the sealed bearing 6 are movably connected, which is beneficial to providing a power source for the output end of the motor 9 to be detected.

[0024] As Figures 1-3 shown, the output end of the motor 9 to be detected and the central shaft 5 are connected through the automatic clamping assembly 7. A buffer pad is arranged at the upper end of the positioning seat 8. The output end of the downward pressing cylinder 11 and the lower pressing plate 12 are fixedly connected. Control buttons are arranged at the upper end of the control panel 14. A control circuit board and a battery are arranged inside the control panel 14. The control circuit board and the decibel collector 13 are electrically connected, which is beneficial to detecting the noise and abnormal sound generated during the operation of the motor 9 to be detected.

[0025] As Figures 2-5 shown, the sleeve seat 71 and the central shaft 5 are fixedly connected. The moving hole 72 and the guiding hole 73 both penetrate through the middle of the sleeve seat 71. The diameter of the moving hole 72 is larger than that of the guiding hole 73. The number of the guiding holes 73 is twice that of the moving holes 72. The number of the clamping plates 74 is two groups and they are symmetrically distributed. The clamping plate 74 is of an arc-shaped structure. The clamping cylinder 75 and the sleeve seat 71 are fixedly connected by bolts. The output end of the clamping cylinder 75 is adapted to the moving hole 72. The output end of the clamping cylinder 75 and the pressure sensor 76 are fixedly connected. The detection end of the pressure sensor 76 and the clamping plate 74 are fixedly connected. The infrared sensor 77 and the clamping plate 74 are fixedly connected. The number of the anti-slip strips 78 is several groups and they are arranged in an array, which is beneficial to automatically clamping and fixing the output end of the motor 9 to be detected, avoiding the cumbersome installation of the coupling, saving time and effort.

[0026] The working principle of the present utility model is as follows: During the use of the testing device, the motor 9 to be tested is placed on the upper end of the positioning seat 8, and the output end of the motor 9 to be tested is connected to the central shaft 5 through the automatic clamping assembly 7. Under the support of the support frame 10, the output end of the pressing cylinder 11 drives the lower pressing plate 12 to clamp the upper end of the motor 9 to be tested. Then, the control panel 14 is used to control the output end of the dynamometer 4 to drive the central shaft 5 to rotate along the inside of the sealed bearing 6. At the same time, under the connection of the automatic clamping assembly 7, the output end of the motor 9 to be tested is driven to rotate. The noise and abnormal noise are collected in real time by the decibel collector 13, so as to judge whether it is qualified.

[0027] It should be noted that through the setting of the automatic clamping assembly 7, when connecting the output end of the motor 9 to be tested to the central shaft 5, the output end of the motor 9 to be tested is inserted into the inside of the sleeve seat 71 and detected by the infrared sensor 77, and then fed back to the control circuit board. The output end of the control clamping cylinder 75 drives the pressure sensor 76 and the clamping plate 74 to clamp, so that the two clamping plates 74 clamp the output end of the motor 9 to be tested. At the same time, the guide rod 79 is driven to slide along the inside of the guide hole 73. During the clamping process, the anti-slip strip 78 plays an anti-slip effect. At the same time, when the clamping plate 74 contacts the output end of the motor 9 to be tested, the clamping pressure is monitored in real time by the pressure sensor 76. When the set interval value is reached, the output end of the clamping cylinder 75 can be controlled to stop running and remain in place, so as to clamp the output end of the motor 9 to be tested, ensuring the tightness of the connection between the output end of the motor 9 to be tested and the central shaft 5, and avoiding the shaking of the output end of the motor 9 to be tested during rotation.

[0028] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices and operation methods not specifically described and explained in the present utility model, unless otherwise specified and limited, are implemented according to the conventional means in this field.

Claims

1. A testing device for motor running noise and abnormal sound, comprising a device base (1), characterized in that: A sealed box body (2) is arranged at the upper end of the device base (1), a sealed box door (3) is arranged on the outer side of the sealed box body (2), a dynamometer (4) and a control panel (14) are arranged at the upper end of the device base (1), an output end of the dynamometer (4) is connected to a central axis (5), a sealed bearing (6) is arranged on the outer side of the central axis (5), one end of the central axis (5) is connected to an automatic clamping assembly (7), a positioning seat (8) and a support frame (10) are arranged inside the device base (1), a downward pressure cylinder (11) is arranged at the upper end of the support frame (10), a downward pressure plate (12) is arranged at the output end of the downward pressure cylinder (11), and a motor to be tested (9) and a decibel collector (13) are arranged inside the device base (1); The automatic clamping assembly (7) comprises a sleeve seat (71), the outer side of the sleeve seat (71) is provided with a moving hole (72) and a guide hole (73), one side of the sleeve seat (71) is provided with a clamping cylinder (75), the output end of the clamping cylinder (75) is provided with a pressure sensor (76) and a clamping plate (74), and one side of the clamping plate (74) is provided with an infrared sensor (77) and an anti-slip strip (78).

2. A testing device for motor running noise and abnormal sound according to claim 1, characterized in that: The device base (1) and the sealed box body (2) are fixedly connected, a hinge is provided between the sealed box body (2) and the sealed box door (3), the output end of the dynamometer (4) and the central axis (5) are fixedly connected, and the central axis (5) and the sealed bearing (6) are movably connected.

3. A testing device for motor running noise and abnormal sound according to claim 1, characterized in that: The output end of the motor to be detected (9) is connected to the central axis (5) via an automatic clamping assembly (7); a buffer pad is provided at the upper end of the positioning seat (8); the output end of the downward pressure cylinder (11) is fixedly connected to the downward pressure plate (12); a control button is provided at the upper end of the control panel (14); a control circuit board and a battery are provided inside the control panel (14); and the control circuit board is electrically connected to the decibel collector (13).

4. A testing device for motor running noise and abnormal sound according to claim 1, characterized in that: The sleeve seat (71) and the central axis (5) are fixedly connected, the movable hole (72) and the guide hole (73) both penetrate the middle of the sleeve seat (71), the diameter of the movable hole (72) is larger than the diameter of the guide hole (73), and the number of the guide holes (73) is twice the number of the movable holes (72).

5. A testing device for motor running noise and abnormal sound according to claim 1, characterized in that: The clamping plates (74) are provided in two groups and are symmetrically distributed. The clamping plates (74) are arc-shaped structures. The clamping cylinder (75) and the sleeve seat (71) are fixedly connected by bolts. The output end of the clamping cylinder (75) is adapted to the moving hole (72).

6. A testing device for motor running noise and abnormal sound according to claim 1, characterized in that: The output end of the clamping cylinder (75) is fixedly connected to the pressure sensor (76), the detection end of the pressure sensor (76) is fixedly connected to the clamping plate (74), the infrared sensor (77) is fixedly connected to the clamping plate (74), and the anti-slip strips (78) are provided in a plurality of groups and are distributed in an array.

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