Servo motor noise reduction device

Abstract

The utility model relates to the technical field of servo motors, and discloses a servo motor noise reduction device which comprises a motor body, the outer wall of the motor body is fixedly connected with a rotating column, the outer wall of the motor body is provided with a damping and noise reduction assembly, the outer wall of the rotating column is provided with a noise reduction assembly, and the damping and noise reduction assembly comprises sound absorption cotton. The inner wall of the sound absorption cotton is attached to the outer wall of the motor body, the outer wall of the sound absorption cotton is fixedly connected with a supporting frame, the outer wall of the supporting frame is fixedly connected with a second fixing table, the inner wall of the second fixing table is rotatably connected with a second rotating shaft, the outer wall of the second rotating shaft is fixedly connected with a fixing frame, and the outer wall of the fixing frame is fixedly connected with a first fixing table. A first rotating shaft is rotationally connected to the inner wall of the first fixing table, and a transmission rod is fixedly connected to the outer wall of the first rotating shaft. According to the utility model, the vibration amplitude of the motor body is reduced, the collision noise of the support frame is reduced, the vibration transmission is reduced, the equipment stability is improved, the fault risk is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of servo motor technology, and in particular to a servo motor noise reduction device. Background Technology

[0002] In today's rapidly developing industrial automation landscape, servo motors, as key actuators, are widely used in various precision equipment and mechanical systems. Their operational stability and noise control levels directly impact the overall performance, lifespan, and comfort of the working environment. In many noise-sensitive applications, such as electronic equipment manufacturing, medical equipment operation, and high-end CNC machine tool processing, the noise generated by servo motors has become a critical technical challenge. Therefore, developing an efficient servo motor noise reduction device is of significant practical importance.

[0003] Currently, in the field of servo motor noise reduction technology, a common method is to simply wrap the motor with sound-absorbing material, using the sound-absorbing properties of the material to reduce noise propagation. The principle is to utilize the porous structure of the sound-absorbing material, causing sound waves to be constantly reflected and refracted, consuming sound energy and thus reducing the amount of noise propagating outwards. Other technologies optimize the electromagnetic design inside the motor to reduce vibration and noise generated by electromagnetic force fluctuations. For example, adjusting the distribution and number of turns of the motor windings and changing the distribution of the air gap magnetic field can reduce the harmonic components of the electromagnetic force, thereby mitigating the motor's vibration amplitude.

[0004] However, existing technologies still have limitations in practical applications. During actual operation, the rotating components inside the servo motor generate strong vibrations at high speeds. These vibrations not only cause fatigue damage to the motor's structure but also result in relative displacement and swaying between the motor and its mounting bracket. Because current technologies struggle to effectively handle the lateral forces generated by this vibration, the motor's support frame frequently sways under the influence of vibration, causing collisions between components and generating continuous mechanical noise. This noise affects the equipment's operating environment, interferes with operators' work, and over time, the continuous transmission of vibration impacts the stability of surrounding equipment, increasing the risk of equipment failure and shortening its lifespan. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a servo motor noise reduction device, which aims to improve the problem that the vibration generated by the motor operation causes the support frame to shake, the components to collide with each other and generate noise, affecting the equipment's operating environment and causing additional noise.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a servo motor noise reduction device, comprising a motor body, a rotating column fixedly connected to the outer wall of the motor body, a vibration damping and noise reduction component provided on the outer wall of the motor body, and a noise reduction component provided on the outer wall of the rotating column;

[0007] The vibration damping and noise reduction assembly includes sound-absorbing cotton. The inner wall of the sound-absorbing cotton is attached to the outer wall of the motor body. A support frame is fixedly connected to the outer wall of the sound-absorbing cotton. A second fixed platform is fixedly connected to the outer wall of the support frame. A second rotating shaft is rotatably connected to the inner wall of the second fixed platform. A fixed frame is fixedly connected to the outer wall of the second rotating shaft. A first fixed platform is fixedly connected to the outer wall of the fixed frame. A first rotating shaft is rotatably connected to the inner wall of the first fixed platform. A transmission rod is fixedly connected to the outer wall of the first rotating shaft. A pressure rod is fixedly connected to one end of the transmission rod. A spring is fixedly connected to the inner wall of the support frame. A soft pad is provided on the lower surface of the support frame.

[0008] Furthermore, the noise reduction assembly includes a noise reduction sleeve, the inner wall of which is disposed on the outer wall of the rotating column, the outer wall of which has an external sound hole, the inner wall of which has an internal sound hole, a sound-absorbing inner pad fixedly connected to the inner wall of which, a sealing gasket fixedly connected to one end of which, a sound-absorbing outer pad fixedly connected to the inner wall of which, and a sound transmission channel formed in the inner wall of which.

[0009] Furthermore, the inner wall of the sound transmission channel is disposed on the outer wall of the sound-absorbing inner pad, and the inner wall of the sound transmission channel is disposed on the outer wall of the sound-absorbing outer pad.

[0010] Furthermore, the outer wall of the pressure rod is slidably connected to the inner wall of the support frame, and the pressure rod is used to compress the spring.

[0011] Furthermore, the lower surface of the pressure rod is slidably connected to one end of a spring, and the spring is used to push the pressure rod.

[0012] Furthermore, both the inner and outer sound-absorbing pads are made of high-polymer sound-absorbing cotton.

[0013] Furthermore, the inner wall of the fixing frame is rotatably connected to the outer wall of the support frame, and the fixing frame is used to fix the motor body.

[0014] Furthermore, the cushion material is rubber.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, when the motor starts, the rotating column drives the motor to vibrate. Through the transmission structure, the pressure rod compresses the spring, which works in conjunction with the soft pad to dampen the vibration, offset the lateral force and reduce noise. This solves the problem that the vibration generated by the motor operation will cause the support frame to shake, and the collision between the components will generate noise, affecting the equipment's operating environment and causing additional noise. It achieves the goals of reducing the vibration amplitude of the motor body, reducing the collision noise of the support frame, reducing vibration transmission, improving equipment stability, reducing the risk of failure, and extending the service life of the equipment.

[0017] 2. In this utility model, the noise generated by the rotating column is isolated by the sealing gasket in the sound-absorbing sleeve, and absorbed and canceled by the staggered sound holes and sound-absorbing pads, reducing the transmission of noise and achieving the effect of effectively reducing the noise generated when the motor is running, thereby improving the quiet performance of the servo motor. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a servo motor noise reduction device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the fixing frame structure of a servo motor noise reduction device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the sound-absorbing sleeve part of a servo motor noise reduction device proposed in this utility model.

[0021] Legend:

[0022] 1. Motor body; 2. Rotating column; 3. Fixing frame; 4. Fixing platform one; 5. Transmission rod; 6. Pressure rod; 7. Support frame; 8. Soft pad; 9. Rotating shaft one; 10. Rotating shaft two; 11. Fixing platform two; 12. Silencing sleeve; 13. Sound-absorbing cotton; 14. Spring; 15. Sound-absorbing inner pad; 16. External sound hole; 17. Internal sound hole; 18. Sound-absorbing outer pad; 19. Sound transmission channel; 20. Sealing gasket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 2The present invention provides an embodiment of a servo motor noise reduction device, comprising a motor body 1, a rotating column 2 fixedly connected to the outer wall of the motor body 1, a shock absorption and noise reduction component provided on the outer wall of the motor body 1 to prevent noise generated when the motor body 1 is in contact with the ground during operation, and a noise reduction component provided on the outer wall of the rotating column 2 to eliminate the noise generated when the rotating column 2 rotates.

[0025] The vibration damping and noise reduction assembly includes sound-absorbing cotton 13. The inner wall of the sound-absorbing cotton 13 is attached to the outer wall of the motor body 1. A support frame 7 is fixedly connected to the outer wall of the sound-absorbing cotton 13. A second fixed platform 11 is fixedly connected to the outer wall of the support frame 7. A second rotating shaft 10 is rotatably connected to the inner wall of the second fixed platform 11. A fixed frame 3 is fixedly connected to the outer wall of the second rotating shaft 10. A first fixed platform 4 is fixedly connected to the outer wall of the fixed frame 3. A first rotating shaft 9 is rotatably connected to the inner wall of the first fixed platform 4. A transmission rod 5 is fixedly connected to the outer wall of the first rotating shaft 9. A pressure rod 6 is fixedly connected to one end of the transmission rod 5. A spring 14 is fixedly connected to the inner wall of the support frame 7. A soft pad 8 is provided on the lower surface of the support frame 7.

[0026] Specifically, after the motor body 1 is started, the rotating column 2 rotates at high speed, causing the motor body 1 to vibrate. The force generated by the vibration is transmitted to the support frame 7. At this time, the fixed frame 3 rotates around the second rotating shaft 10, which drives the transmission rod 5 to rotate around the first rotating shaft 9. The transmission rod 5 pushes the pressure rod 6 to press down the spring 14. The pressure rod 6 and the soft pad 8 work together.

[0027] Reference Figure 1 - Figure 3 The noise reduction assembly includes a noise reduction sleeve 12, the inner wall of which is set on the outer wall of the rotating column 2. The outer wall of the noise reduction sleeve 12 has an external sound hole 16, and the inner wall of the noise reduction sleeve 12 has an internal sound hole 17. A sound-absorbing inner pad 15 is fixedly connected to the inner wall of the noise reduction sleeve 12. A sealing gasket 20 is fixedly connected to one end of the noise reduction sleeve 12. A sound-absorbing outer pad 18 is fixedly connected to the inner wall of the noise reduction sleeve 12. A sound transmission channel 19 is formed in the inner wall of the noise reduction sleeve 12, and the inner wall of the sound transmission channel 19 is set with the sound-absorbing inner pad. The outer wall of the sound transmission channel 19 is set on the outer wall of the sound-absorbing outer pad 18. The outer wall of the pressure rod 6 is slidably connected to the inner wall of the support frame 7. The pressure rod 6 is used to compress the spring 14. The lower surface of the pressure rod 6 is slidably connected to one end of the spring 14. The spring 14 is used to push the pressure rod 6. The sound-absorbing inner pad 15 and the sound-absorbing outer pad 18 are both made of high-polymer sound insulation cotton. The inner wall of the fixing frame 3 is rotatably connected to the outer wall of the support frame 7. The fixing frame 3 is used to fix the motor body 1. The soft pad 8 is made of rubber.

[0028] Specifically, the rotating column 2 generates noise by rotating at high speed and rubbing within the motor body 1. The sealing gasket 20 isolates the noise within the sound-absorbing sleeve 12. The noise can only enter the sound transmission channel 19 through the inner sound hole 17 and then be discharged from the outer sound hole 16. Since the inner sound hole 17 and the outer sound hole 16 are staggered, the sound is reflected and refracted multiple times during propagation, partially canceling each other out. Finally, it is further absorbed by the sound-absorbing inner pad 15 and the sound-absorbing outer pad 18.

[0029] Working principle: First, the motor body 1 is started. The rotating column 2 rotates at high speed inside the motor body 1, causing the motor body 1 to vibrate. The motor body 1 transmits force to the support frame 7. The fixed frame 3 and the transmission rod 5 rotate. The fixed frame 3 rotates through the second rotating shaft 10. The transmission rod 5 rotates through the first rotating shaft 9. The transmission rod 5 pushes down the pressure rod 6. The pressure rod 6 presses down the spring 14. With the help of the soft pad 8, the vibration is absorbed. Finally, the lateral force is converted into downward and upward forces that cancel each other out, reducing the noise of the moving and colliding of the support frame 7. In addition, the rotating column 2 first rotates at high speed inside the motor body 1 and generates noise through friction. Then, the sound is isolated in the sound-absorbing sleeve 12 by the sealing pad 20. The sound can only enter the sound transmission channel 19 through the inner sound hole 17 and then be discharged from the outer sound hole 16. Through the interlacing of the inner sound hole 17 and the outer sound hole 16, the sound is propagated multiple times and partially cancels each other out. Finally, with the help of the set sound-absorbing inner pad 15 and sound-absorbing outer pad 18, the sound is fully absorbed.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A noise reduction device for a servo motor, comprising a motor body (1), characterized in that: The motor body (1) is fixedly connected with a rotating column (2), the motor body (1) is provided with a damping sound reduction assembly, and the rotating column (2) is provided with a sound reduction assembly. The damping sound reduction assembly comprises sound-absorbing cotton (13), the sound-absorbing cotton (13) is attached to the outer wall of the motor body (1), the sound-absorbing cotton (13) is fixedly connected with a support frame (7), the support frame (7) is fixedly connected with a fixed table two (11), the fixed table two (11) is rotatably connected with a rotating shaft two (10), the rotating shaft two (10) is fixedly connected with a fixed frame (3), the fixed frame (3) is fixedly connected with a fixed table one (4), the fixed table one (4) is rotatably connected with a rotating shaft one (9), the rotating shaft one (9) is fixedly connected with a transmission rod (5), one end of the transmission rod (5) is fixedly connected with a pressing rod (6), the support frame (7) is fixedly connected with a spring (14), and the lower surface of the support frame (7) is provided with a soft pad (8).

2. The noise reduction device for a servo motor according to claim 1, characterized in that: The sound reduction assembly comprises a sound reduction sleeve (12), the sound reduction sleeve (12) is arranged on the outer wall of the rotating column (2), the sound reduction sleeve (12) is provided with an outer sound hole (16), the sound reduction sleeve (12) is provided with an inner sound hole (17), the sound reduction sleeve (12) is fixedly connected with a sound-absorbing inner pad (15), one end of the sound reduction sleeve (12) is fixedly connected with a sealing pad (20), the sound reduction sleeve (12) is fixedly connected with a sound-absorbing outer pad (18), and the sound reduction sleeve (12) is provided with a sound transmission channel (19).

3. The noise reduction device of a servo motor according to claim 2, characterized in that: The sound transmission channel (19) is arranged on the outer wall of the sound-absorbing inner pad (15), and the sound transmission channel (19) is arranged on the outer wall of the sound-absorbing outer pad (18).

4. The noise reduction device of a servo motor according to claim 1, characterized in that: The outer wall of the pressing rod (6) is slidably connected to the inner wall of the support frame (7), and the pressing rod (6) is used for extruding the spring (14).

5. The noise reduction device for a servo motor according to claim 1, characterized in that: The lower surface of the pressing rod (6) is slidably connected to one end of the spring (14), and the spring (14) is used for pushing the pressing rod (6).

6. The noise reduction device of a servo motor according to claim 2, characterized in that: The sound-absorbing inner pad (15) and the sound-absorbing outer pad (18) are made of high-molecular sound insulation cotton.

7. The noise reduction device of a servo motor according to claim 2, characterized in that: The inner wall of the fixed frame (3) is rotatably connected to the outer wall of the support frame (7), and the fixed frame (3) is used for fixing the motor body (1).

8. The noise reduction device for a servo motor according to claim 1, characterized in that: The soft pad (8) is made of rubber.

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