Anti-vibration and noise-reduction rotor shaft stabilizing device

Abstract

The utility model relates to the technical field of new energy automobile driving motors, in particular to an anti-vibration and noise-reduction rotor shaft stabilizing device which comprises a workbench, a limiting assembly is installed on the surface of the workbench, an installation base is installed above the limiting assembly, a thread assembly comprises a plurality of fixing bolts and gaskets, and the fixing bolts are connected with the installation base. A plurality of fixing bolts are arranged in the mounting sleeve, a plurality of threaded holes corresponding to the fixing bolts are formed in the surfaces of the two ends of the mounting base, and the gaskets are mounted at the connecting positions of the fixing bolts and the mounting sleeve, the mounting sleeve and the mounting base are tightly connected mainly through the fixing bolts and the gaskets, the stability of the motor body in the mounting base is ensured, and the motor body is prevented from being damaged. Threaded connection has self-locking performance, vibration and impact can be effectively resisted, loosening or displacement of the motor body in the installation process can be prevented, elastic deformation of the gasket can absorb part of vibration energy, interference of vibration on the surrounding environment is further reduced, and stable operation of the device in long-time use or in a high-strength vibration environment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle drive motor technology, specifically to a vibration-damping and noise-reducing rotor shaft stabilization device. Background Technology

[0002] Compared to traditional gasoline engines, drive motors in new energy vehicles offer higher energy conversion efficiency, lower noise and vibration, and are more environmentally friendly. To meet these requirements, the drive motor rotor shaft needs to possess high stability and vibration resistance. Especially under high-speed rotation and variable load conditions, even slight mass differences or imbalances in the rotor shaft can generate centrifugal force, leading to additional vibration and noise. Although some vibration reduction and noise reduction technologies have been applied to drive motors in new energy vehicles, limitations remain. Some vibration damping devices may be overly complex, increasing the manufacturing cost and maintenance difficulty of the motor.

[0003] A search revealed Chinese patent application number 202221469190.8, which discloses a vibration reduction and noise reduction device for a motor rotor. The device includes a housing, within which a rotating shaft is housed. A rotor is sleeved on the outer side of one end of the rotating shaft, and a sound-absorbing pad is sleeved on the outer side of the other end. A bearing is sleeved on the outer side of the sound-absorbing pad. A buffer tube is fixedly connected inside the housing, and a buffer column is inserted into the end of the buffer tube furthest from the housing. This vibration reduction and noise reduction device for the motor rotor, through the cooperation of the buffer tube, buffer column, first air bladder, first air hole, top column, and insert tube, works as follows: when the rotor rotates, causing the rotating shaft to rotate and vibrate, the top column compresses the spring inward and is subjected to the reaction force of air pressure. Simultaneously, air in the insert tube slowly exits through the first air hole into the first air bladder, causing the first air bladder to expand. This provides a certain buffering effect for the buffer column, effectively reducing the vibration generated by the rotating shaft and preventing it from affecting other components of the motor, thus reducing noise.

[0004] However, the above-mentioned vibration reduction and noise reduction device for motor rotor still has the following drawbacks:

[0005] This device mainly relies on the inflation and deflation of airbags to absorb vibration energy. With prolonged use or in high-intensity vibration environments, the airbags may age or rupture due to frequent deformation, thus affecting their long-term stability and reliability. Therefore, we need a vibration-damping and noise-reducing rotor shaft stabilizing device to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a vibration-damping and noise-reducing rotor shaft stabilizing device. It mainly uses fixing bolts and shims to tightly connect the mounting sleeve and the mounting base, ensuring the stability of the motor body within the mounting base. The threaded connection has self-locking properties, which can effectively resist vibration and impact, preventing the motor body from loosening or shifting during installation. The elastic deformation of the shims can absorb some vibration energy, further reducing the interference of vibration on the surrounding environment. The tight connection between the mounting sleeve and the mounting base provides stable support, ensuring the stable operation of the device under long-term use or high-intensity vibration environments.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vibration-damping and noise-reducing rotor shaft stabilizing device, comprising a worktable, a limiting component mounted on the surface of the worktable, a mounting base mounted above the limiting component, a motor body disposed on the inner wall of the mounting base, a rotor mounted inside the motor body, an output shaft mounted at one end of the motor body, and a mounting sleeve fitted to the upper part of the motor body. The two ends of the mounting sleeve are connected to the two ends of the mounting base via a threaded assembly, the threaded assembly comprising multiple fixing bolts and washers, multiple threaded holes corresponding to the fixing bolts being formed on the surfaces of the two ends of the mounting base, the threaded ends of the fixing bolts being threaded into the interior of the threaded holes, and the washers being installed at the connection between the fixing bolts and the mounting sleeve.

[0008] Preferably, the limiting component includes two limiting blocks and a limiting groove. The limiting blocks are installed on the surface of the worktable, and the limiting grooves are formed on both sides of the bottom end of the mounting base. The bottom end of the mounting base is slidably installed on the limiting blocks through the limiting grooves.

[0009] Preferably, both the mounting sleeve and the mounting base are semi-circular, and the motor body is embedded inside the mounting sleeve and the mounting base.

[0010] Preferably, a fixing block is installed at one end of each of the two limiting blocks, and the bottom end of the fixing block is connected to the surface of the worktable.

[0011] Preferably, a buffer pad is installed at the inner bottom end of the plurality of threaded holes, and the threaded end of the fixing bolt abuts against the buffer pad.

[0012] Preferably, a sound-absorbing layer is fitted onto the surface of the rotor, and vibration-damping components are installed around the surface of the sound-absorbing layer.

[0013] Preferably, the vibration damping assembly includes multiple fixing pads, buffer columns, and limiting plates. The fixing pads are installed on the side wall of the motor body. One end of each buffer column is connected to the surface of the fixing pad, and the other end of each buffer column is connected to one side of the limiting plate. The other side of each limiting plate is disposed on the surface of the rotor.

[0014] Preferably, a damper is fitted onto the surface of the buffer column, and the damper is disposed between the fixing pad and the limiting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model mainly uses fixing bolts and washers to tightly connect the mounting sleeve and the mounting base, ensuring the stability of the motor body within the mounting base. The threaded connection has self-locking properties, which can effectively resist vibration and impact, preventing the motor body from loosening or shifting during installation. The elastic deformation of the washers can absorb some vibration energy, further reducing the interference of vibration on the surrounding environment. The tight connection between the mounting sleeve and the mounting base provides stable support, ensuring the stable operation of the device under long-term use or high-intensity vibration environments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure between the mounting base and the mounting sleeve of this utility model;

[0019] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0020] Figure 4 This is a cross-sectional view of the internal structure of the motor body of this utility model.

[0021] In the diagram: 1. Workbench; 2. Motor body; 3. Mounting sleeve; 4. Mounting base; 5. Output shaft; 6. Fixing block; 61. Limiting block; 62. Limiting groove; 7. Fixing bolt; 71. Washer; 72. Threaded hole; 73. Buffer pad; 8. Rotor; 9. Sound insulation layer; 10. Fixing pad; 11. Damper; 12. Limiting plate. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4This utility model provides a technical solution: a vibration-damping and noise-reducing rotor shaft stabilizing device, including a workbench 1, a limiting component installed on the surface of the workbench 1, an mounting base 4 installed above the limiting component, a motor body 2 provided on the inner wall of the mounting base 4, a rotor 8 installed inside the motor body 2, an output shaft 5 installed at one end of the motor body 2, and a mounting sleeve 3 attached to the top of the motor body 2. The two ends of the mounting sleeve 3 are connected to the two ends of the mounting base 4 through a threaded assembly. The threaded assembly includes multiple fixing bolts 7 and washers 71. Multiple threaded holes 72 corresponding to the fixing bolts 7 are opened on the surface of both ends of the mounting base 4. The threaded end of the fixing bolt 7 is threadedly connected to the inside of the threaded hole 72. The washers 71 are installed at the connection between the fixing bolt 7 and the mounting sleeve 3.

[0024] In use, the mounting sleeve 3 is tightly connected to the mounting base 4 by fixing bolts 7 and washers 71, ensuring the stability of the motor body 2 within the mounting base 4. The threaded connection has self-locking properties, which can effectively resist vibration and impact, preventing the motor body 2 from loosening or shifting during installation. The elastic deformation of the washers 71 can absorb some vibration energy, further reducing the interference of vibration on the surrounding environment. The tight connection between the mounting sleeve 3 and the mounting base 4 provides stable support, ensuring the stable operation of the device under long-term use or high-intensity vibration environments.

[0025] The limiting assembly includes two limiting blocks 61 and a limiting groove 62. The limiting blocks 61 are mounted on the surface of the workbench 1, and the limiting grooves 62 are formed on both sides of the bottom end of the mounting base 4. The bottom end of the mounting base 4 is slidably mounted on the limiting blocks 61 through the limiting grooves 62. With the design of sliding on the limiting blocks 61, the mounting base 4 can remain stable during operation and is not prone to shaking or displacement, thereby improving the stability of the entire device.

[0026] Both the mounting sleeve 3 and the mounting base 4 are designed to be semi-circular. The motor body 2 is embedded inside the mounting sleeve 3 and the mounting base 4. The semi-circular structure design allows the mounting sleeve 3 and the mounting base 4 to form a tighter contact when the motor body 2 is embedded, thereby enhancing the stability of the fixation.

[0027] A fixing block 6 is installed at one end of each of the two limiting blocks 61. The bottom end of the fixing block 6 is connected to the surface of the worktable 1. By connecting one end of the limiting block 61 to the worktable 1 through the fixing block 6, the stability of the limiting block 61 can be significantly improved, preventing it from shifting or loosening during operation.

[0028] A buffer pad 73 is installed at the inner bottom of multiple threaded holes 72. The threaded end of the fixing bolt 7 abuts against the buffer pad 73. Through the buffering effect of the buffer pad 73, the connection between the fixing bolt 7 and the threaded hole 72 can be made more stable and reliable, avoiding loosening or damage caused by vibration and impact.

[0029] The surface of the rotor 8 is fitted with a sound-absorbing layer 9, and anti-vibration components are installed around the surface of the sound-absorbing layer 9. The sound-absorbing layer 9 is usually made of sound-absorbing material, which can effectively absorb and isolate the noise generated by the rotor 8 during operation, thereby reducing the noise level.

[0030] The vibration damping assembly includes multiple fixing pads 10, buffer columns, and limiting plates 12. The fixing pads 10 are installed on the side wall of the motor body 2. One end of the buffer column is connected to the surface of the fixing pad 10, and the other end of the buffer column is connected to one side of the limiting plate 12. The other side of the multiple limiting plates 12 is set on the surface of the rotor 8. As the main elastic element, the buffer column can effectively absorb and disperse the vibration energy generated by the rotor 8 during operation. When the rotor 8 vibrates, the buffer column will deform, thereby converting the vibration energy into heat energy or other forms of energy, thereby reducing the damage of vibration to the motor body 2 and the rotor 8. Through the cooperation of the fixing pads 10 and the limiting plates 12, it can be ensured that the buffer column can maintain the relatively stable position of the rotor 8 while absorbing vibration, which helps to reduce the rotor 8 offset or instability caused by vibration and improve the stability of the entire equipment.

[0031] A damper 11 is fitted onto the surface of the buffer column. The damper 11 is positioned between the fixed pad 10 and the limiting plate 12. By fitting the damper 11, the deformation process of the buffer column under vibration and impact is more effectively controlled. The presence of the damper 11 enables the buffer column to generate greater damping force during deformation, thereby improving the buffering effect and reducing the damage of vibration to the equipment.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration-damping and noise-reducing rotor shaft stabilizing device, comprising a worktable (1), characterized in that: The workbench (1) is equipped with a limiting component on its surface. A mounting base (4) is installed above the limiting component. A motor body (2) is provided on the inner wall of the mounting base (4). A rotor (8) is installed inside the motor body (2). An output shaft (5) is installed at one end of the motor body (2). A mounting sleeve (3) is attached to the top of the motor body (2). The two ends of the mounting sleeve (3) are connected to the two ends of the mounting base (4) through a threaded assembly. The threaded assembly includes multiple fixing bolts (7) and washers (71). Multiple threaded holes (72) corresponding to the fixing bolts (7) are opened on the two ends of the mounting base (4). The threaded end of the fixing bolt (7) is threaded into the inside of the threaded hole (72). The washer (71) is installed at the connection between the fixing bolt (7) and the mounting sleeve (3).

2. The vibration-damping and noise-reducing rotor shaft stabilizing device according to claim 1, characterized in that: The limiting component includes two limiting blocks (61) and a limiting groove (62). The limiting blocks (61) are installed on the surface of the workbench (1). The limiting grooves (62) are opened on both sides of the bottom end of the mounting base (4). The bottom end of the mounting base (4) is slidably installed on the limiting blocks (61) through the limiting grooves (62).

3. The vibration-damping and noise-reducing rotor (8) shaft stabilizing device according to claim 2, characterized in that: Both the mounting sleeve (3) and the mounting base (4) are set to be semi-circular, and the motor body (2) is embedded inside the mounting sleeve (3) and the mounting base (4).

4. The vibration-damping and noise-reducing rotor shaft stabilizing device according to claim 3, characterized in that: One end of each of the two limiting blocks (61) is fitted with a fixing block (6), and the bottom end of the fixing block (6) is connected to the surface of the worktable (1).

5. The vibration-damping and noise-reducing rotor shaft stabilizing device according to claim 4, characterized in that: A buffer pad (73) is installed on the inner bottom end of the plurality of threaded holes (72), and the threaded end of the fixing bolt (7) abuts against the buffer pad (73).

6. The vibration-damping and noise-reducing rotor shaft stabilizing device according to claim 5, characterized in that: The rotor (8) is fitted with a sound-absorbing layer (9), and vibration-damping components are installed around the surface of the sound-absorbing layer (9).

7. The vibration-damping and noise-reducing rotor shaft stabilizing device according to claim 6, characterized in that: The vibration damping assembly includes multiple fixing pads (10), buffer columns and limiting plates (12). The fixing pads (10) are installed on the side wall of the motor body (2). One end of the buffer column is connected to the surface of the fixing pad (10), and the other end of the buffer column is connected to one side of the limiting plate (12). The other side of the multiple limiting plates (12) is disposed on the surface of the rotor (8).

8. The vibration-damping and noise-reducing rotor shaft stabilizing device according to claim 7, characterized in that: A damper (11) is fitted onto the surface of the buffer column, and the damper (11) is disposed between the fixing pad (10) and the limiting plate (12).

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