Noise reduction structure of three-phase asynchronous motor

Abstract

The noise reduction structure of the three-phase asynchronous motor comprises a buffer box, second springs are fixedly installed on the two sides of the lower end of an inner cavity of the buffer box, a polished rod is fixedly installed at the lower end of the inner cavity of the buffer box, sliding rings are installed on the two sides of the front surface of the polished rod in a sliding mode, and movable plates are movably installed on the tops of the sliding rings. A transverse plate is movably mounted at the top of the movable plate, a damper is fixedly mounted at the top of the polished rod, and the top of the damper is fixedly mounted at the bottom of the transverse plate. Through the arrangement of the first spring and the fixing plate, the effect of primary buffering and damping of the motor body is achieved, through the arrangement of the connecting block and the sound insulation cotton, noise can be isolated, through the arrangement of the supporting rod, generated pressure can be transmitted to the transverse plate, and through the arrangement of the transverse plate, the vibration of the motor body is reduced. The effect of adjusting the height of a movable plate is achieved, and through the arrangement of the movable plate, the effect of moving a sliding ring left and right through a polished rod is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase asynchronous motors, in particular to a noise reduction structure of a three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor. It is a type of motor powered by 380V three-phase AC current (phase difference of 120 degrees) at the same time. Since the rotor and stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor. 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. However, the existing three-phase asynchronous motor noise refers to the sound generated when the motor is running, which is usually manifested in two aspects: loudness and high-frequency noise. These sounds may bring a series of health problems, such as headaches, insomnia, tinnitus, etc., and will also affect people's work efficiency and quality of life, and may also cause other physical problems, such as lesions of the nerves, heart, and digestive system. Utility Model Content

[0003] The purpose of the utility model is to provide a noise reduction structure for a three-phase asynchronous motor, which has the advantage of good noise reduction effect and solves the existing three-phase asynchronous motor noise. The noise refers to the sound generated when the motor is running, which is usually manifested in two aspects: loudness and high-frequency noise. These sounds may cause a series of health problems, such as headaches, insomnia, tinnitus, etc., and also affect people's work efficiency and quality of life, and may also cause other physical problems, such as lesions of the nerves, heart, digestive system, etc.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a noise reduction structure of a three-phase asynchronous motor, comprising a buffer box, a second spring is fixedly installed on both sides of the lower end of the inner cavity of the buffer box, a polished rod is fixedly installed on the lower end of the inner cavity of the buffer box, slip rings are slidably installed on both sides of the front surface of the polished rod, a movable plate is movably installed on the top of the slip ring, a cross plate is movably installed on the top of the movable plate, a damper is fixedly installed on the top of the polished rod, the top of the damper is fixedly installed on the bottom of the cross plate, support rods are fixedly installed on both sides of the top of the cross plate, a motor body is fixedly installed on the top of the support rod, a connecting plate is fixedly installed on the left end of the buffer box, a buffer column is fixedly installed on the top of the connecting plate, a first spring is fixedly installed on the bottom of the inner cavity of the buffer column, a fixed plate is fixedly installed on the top of the first spring, a buffer rod is fixedly installed on the top of the fixed plate, the top of the buffer rod is fixedly installed on the bottom of the motor body, a connecting block is fixedly installed on the inner wall of the motor body, and sound insulation cotton is fixedly connected to one side of the connecting block.

[0005] Preferably, a box door is movably mounted on the right end of the buffer box, and a handle is fixedly mounted on the lower end of the front surface of the box door.

[0006] Preferably, a power supply box is fixedly mounted on the top of the motor body, and mounting bolts are fixedly mounted around the front surface of the buffer box.

[0007] Preferably, an output shaft is fixedly mounted on the output end of the motor body, and a belt is transmission-connected to the front surface of the output shaft.

[0008] Preferably, a slide groove is provided at the bottom of the inner cavity of the buffer box, and a sliding block is slidably installed in the inner cavity of the slide groove.

[0009] Preferably, the top of the slider is fixedly mounted on the bottom of the slip ring, and the ends of the sliders that are far away from each other are fixedly mounted on the ends of the second springs that are close to each other.

[0010] Preferably, slide rails are fixedly installed on both sides of the inner cavity of the buffer box, and the inner cavity of the slide rails is fixedly installed on both sides of the cross plate through slide rods.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model achieves the effect of initial buffering and shock absorption of the motor body by the arrangement of the first spring and the fixed plate, can isolate noise by the arrangement of the connecting block and the sound insulation cotton, can transmit the generated pressure to the cross plate by the arrangement of the support rod, can achieve the effect of height adjustment of the movable plate by the arrangement of the cross plate, can achieve the effect of left and right movement of the slip ring by the light rod by the arrangement of the movable plate, can achieve the effect of multiple buffering and shock absorption of the slider by the second spring by the arrangement of the slip ring, can achieve the effect of limiting the spring buffering force by the arrangement of the damper.

[0013] 2. The utility model facilitates users to perform daily maintenance on the buffer box by providing a handle and a box door, achieves the effect of supplying energy to the motor body by providing a power supply box, and achieves the effect of limiting the cross plate by providing a slide rail and a slide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the buffer column structure of the utility model;

[0016] Figure 3 This is a cross-sectional view of the motor body structure of the utility model;

[0017] Figure 4 This is a cross-sectional view of the buffer box structure of the utility model.

[0018] In the figure: 1. buffer box; 2. handle; 3. box door; 4. output shaft; 5. motor body; 6. power supply box; 7. buffer rod; 8. buffer column; 9. connecting plate; 10. support rod; 11. fixed plate; 12. first spring; 13. sound insulation cotton; 14. connecting block; 15. cross plate; 16. second spring; 17. slider; 18. slide groove; 19. bare rod; 20. slip ring; 21. movable plate; 22. damper. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4A noise reduction structure for a three-phase asynchronous motor comprises a buffer box 1, a second spring 16 is fixedly installed on both sides of the lower end of the inner cavity of the buffer box 1, a light rod 19 is fixedly installed on the lower end of the inner cavity of the buffer box 1, slip rings 20 are slidably installed on both sides of the front surface of the light rod 19, a movable plate 21 is movably installed on the top of the slip ring 20, a transverse plate 15 is movably installed on the top of the movable plate 21, a damper 22 is fixedly installed on the top of the light rod 19, the top of the damper 22 is fixedly installed on the bottom of the transverse plate 15, support rods 10 are fixedly installed on both sides of the top of the transverse plate 15, a motor body 5 is fixedly installed on the top of the support rod 10, a connecting plate 9 is fixedly installed on the left end of the buffer box 1, a buffer column 8 is fixedly installed on the top of the connecting plate 9, a first spring 12 is fixedly installed on the bottom of the inner cavity of the buffer column 8, a fixed plate 11 is fixedly installed on the top of the first spring 12, and a buffer rod 7 is fixedly installed on the top of the fixed plate 11, The top of the buffer rod 7 is fixedly installed on the bottom of the motor body 5, and a connecting block 14 is fixedly installed on the inner wall of the motor body 5. A sound insulation cotton 13 is fixedly connected to one side of the connecting block 14. The motor body 5 can be initially buffered, damped and noise-reduced through the buffer rod 7 by the first spring 12 and the fixed plate 11, and then the noise generated by the motor body 5 when working can be isolated by the connecting block 14 and the sound insulation cotton 13. Then, the pressure generated when the motor body 5 is working is used to adjust the height through the support rod 10. The height adjustment of the support rod 10 drives the cross plate 15 to adjust the height. The height adjustment of the cross plate 15 drives the movable plate 21 to adjust the height. The height adjustment of the movable plate 21 drives the slip ring 20 to move left and right through the light rod 19. The left and right movement of the slip ring 20 drives the slider 17 to move left and right through the slide groove 18. The left and right movement of the slider 17 performs shock-reduction and noise-reduction treatment on the motor body 5 through the second spring 16.

[0021] A box door 3 is movably mounted on the right end of the buffer box 1, and a handle 2 is fixedly mounted on the lower end of the front surface of the box door 3. The arrangement of the handle 2 and the box door 3 facilitates the user to perform daily maintenance on the buffer box 1.

[0022] A power supply box 6 is fixedly installed on the top of the motor body 5, and mounting bolts are fixedly installed around the front surface of the buffer box 1. Through the arrangement of the power supply box 6, the effect of supplying energy to the motor body 5 is achieved.

[0023] An output shaft 4 is fixedly mounted on the output end of the motor body 5 , and a belt is transmission-connected to the front surface of the output shaft 4 .

[0024] A slide groove 18 is provided at the bottom of the inner cavity of the buffer box 1 , and a slider 17 is slidably installed in the inner cavity of the slide groove 18 .

[0025] The top of the slider 17 is fixedly mounted on the bottom of the slip ring 20 , and the ends of the slider 17 that are away from each other are fixedly mounted on the ends of the second springs 16 that are close to each other.

[0026] Slide rails are fixedly installed on both sides of the inner cavity of the buffer box 1, and the inner cavity of the slide rails is fixedly installed on both sides of the cross plate 15 through slide rods. The setting of the slide rails and the slide rods achieves the effect of limiting the cross plate 15.

[0027] When in use, the first spring 12 and the fixed plate 11 can perform initial buffering, shock absorption and noise reduction on the motor body 5 through the buffer rod 7, and then the noise generated by the motor body 5 when working can be isolated through the connecting block 14 and the sound insulation cotton 13, and then the height of the motor body 5 is adjusted through the support rod 10 through the pressure generated when the motor body 5 is working. The height adjustment of the support rod 10 drives the height adjustment of the cross plate 15, and the height adjustment of the cross plate 15 drives the height adjustment of the movable plate 21. The height adjustment of the movable plate 21 drives the slip ring 20 to move left and right through the light rod 19. The left and right movement of the slip ring 20 drives the slider 17 to move left and right through the slide groove 18. The left and right movement of the slider 17 performs shock absorption and noise reduction on the motor body 5 through the second spring 16.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction structure for a three-phase asynchronous motor, comprising a buffer box (1), characterized in that: A second spring (16) is fixedly mounted on both sides of the lower end of the inner cavity of the buffer box (1); a light rod (19) is fixedly mounted on the lower end of the inner cavity of the buffer box (1); a slip ring (20) is slidably mounted on both sides of the front surface of the light rod (19); a movable plate (21) is movably mounted on the top of the slip ring (20); a transverse plate (15) is movably mounted on the top of the movable plate (21); a damper (22) is fixedly mounted on the top of the light rod (19); the top of the damper (22) is fixedly mounted on the bottom of the transverse plate (15); support rods (10) are fixedly mounted on both sides of the top of the transverse plate (15); the support rods (10) ) is fixedly installed on the top of the motor body (5), a connecting plate (9) is fixedly installed on the left end of the buffer box (1), a buffer column (8) is fixedly installed on the top of the connecting plate (9), a first spring (12) is fixedly installed on the bottom of the inner cavity of the buffer column (8), a fixing plate (11) is fixedly installed on the top of the first spring (12), a buffer rod (7) is fixedly installed on the top of the fixing plate (11), the top of the buffer rod (7) is fixedly installed on the bottom of the motor body (5), a connecting block (14) is fixedly installed on the inner wall of the motor body (5), and a sound insulation cotton (13) is fixedly connected to one side of the connecting block (14).

2. The noise reduction structure of a three-phase asynchronous motor according to claim 1, characterized in that: A box door (3) is movably mounted on the right end of the buffer box (1), and a handle (2) is fixedly mounted on the lower end of the front surface of the box door (3).

3. The noise reduction structure of a three-phase asynchronous motor according to claim 1, characterized in that: A power supply box (6) is fixedly mounted on the top of the motor body (5), and mounting bolts are fixedly mounted on all four sides of the front surface of the buffer box (1).

4. The noise reduction structure of a three-phase asynchronous motor according to claim 1, characterized in that: An output shaft (4) is fixedly mounted on the output end of the motor body (5), and a belt is transmission-connected to the front surface of the output shaft (4).

5. The noise reduction structure of a three-phase asynchronous motor according to claim 1, characterized in that: A slide groove (18) is provided at the bottom of the inner cavity of the buffer box (1), and a sliding block (17) is slidably mounted in the inner cavity of the slide groove (18).

6. The noise reduction structure of a three-phase asynchronous motor according to claim 5, characterized in that: The top of the slider (17) is fixedly mounted on the bottom of the slip ring (20), and the ends of the slider (17) that are away from each other are fixedly mounted on the ends of the second spring (16) that are close to each other.

7. The noise reduction structure of a three-phase asynchronous motor according to claim 1, characterized in that: Slide rails are fixedly installed on both sides of the inner cavity of the buffer box (1), and the inner cavity of the slide rails is fixedly installed on both sides of the transverse plate (15) through slide rods.

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