A motor with a vibration reduction structure

Abstract

The utility model belongs to motor damping technical field, concretely relates to a motor with vibration reduction structure, including motor main part, the both sides fixed machine foot of motor main part bottom, the both ends of fixed machine foot bottom are installed with damping mechanism, damping mechanism includes rigid bulkhead, the top of rigid bulkhead is installed with flexible rubber pad, the upper surface of flexible rubber pad and the lower surface of fixed machine foot bottom are pasted, the bottom of rigid bulkhead is installed with hard rubber pad. The upper of flexible rubber pad is equipped with a plurality of first honeycomb hole, and the first honeycomb hole penetrates the bottom of flexible rubber pad. The utility model can pass through multilayer composite design, realizes the quick dissipation of motor high frequency vibration energy and the effective buffer isolation of low frequency / impact vibration, and allows optimizing the dynamic stiffness of system through adjusting washer, thereby comprehensively promotes the running stability of motor, service life and working environment noise level.

Description

Technical Field

[0001] This utility model belongs to the field of motor vibration reduction technology, specifically relating to a motor with a vibration reduction structure. Background Technology

[0002] When an electric motor is running, factors such as rotor imbalance and changes in electromagnetic force inevitably cause vibrations. If these vibrations are directly transmitted to the equipment foundation or external structure, they will not only exacerbate fatigue damage to key components such as bearings and windings inside the motor and shorten its service life, but also generate serious noise pollution and may interfere with the normal operation of other precision equipment on the same base. To suppress vibration, common practices include installing vibration isolation elements such as rubber pads and spring dampers on the motor base. However, traditional single-material vibration damping pads often cannot meet the isolation requirements of high-frequency and low-frequency vibrations simultaneously: soft materials absorb high-frequency vibrations well, but their support stiffness is insufficient, which can easily lead to equipment settlement or instability; rigid materials can provide sufficient static support, but their attenuation effect on high-frequency vibrations is limited, and their isolation effect on low-frequency vibrations is poor. Utility Model Content

[0003] The purpose of this invention is to provide a motor with a vibration reduction structure. Through a multi-layer composite design, it achieves rapid dissipation of high-frequency vibration energy and effective buffering and isolation of low-frequency / impact vibrations. It also allows for optimization of the system's dynamic stiffness by adjusting shims, thereby comprehensively improving the motor's operational stability, service life, and noise level in the working environment.

[0004] The specific technical solution adopted by this utility model is as follows: A motor with a vibration reduction structure includes a motor body, with fixed feet fixed on both sides of the bottom of the motor body, and vibration damping mechanisms installed at both ends of the bottom of the fixed feet; The shock absorption mechanism includes a rigid partition, a flexible rubber pad is installed on the top of the rigid partition, the upper surface of the flexible rubber pad is in contact with the lower surface of the bottom of the fixed foot, and a hard rubber pad is installed on the bottom of the rigid partition.

[0005] Furthermore, the soft rubber pad has several first honeycomb holes on its upper surface, the first honeycomb holes penetrating the bottom of the soft rubber pad, and the hard rubber pad has several second honeycomb holes on its upper surface, the second honeycomb holes not penetrating the bottom of the hard rubber pad.

[0006] Furthermore, a spring is provided inside the second honeycomb hole, and several rigid adjusting shims are installed at the bottom of the rigid partition. The rigid adjusting shims are located above the second honeycomb hole, and the bottom of the rigid adjusting shims is in contact with the top of the spring.

[0007] Furthermore, the rigid partition is provided with positioning grooves at both the top and bottom, and the bottom of the flexible rubber pad and the top of the second honeycomb hole are both fitted into the positioning grooves.

[0008] Furthermore, the flexible rubber pad, the rigid partition, and the hard rubber pad are provided with mounting holes in the middle, and the flexible rubber pad, the rigid partition, and the hard rubber pad are fixed to the bottom of the fixed foot by bolts passing through the mounting holes.

[0009] The technical effects achieved by this utility model are as follows: This utility model, through a three-layer design of a soft rubber pad, a rigid partition and a hard rubber pad, combined with the synergistic effect of the first honeycomb hole and the spring, can effectively absorb the high-frequency micro-amplitude vibration generated by the motor body at the same time, and isolate the low-frequency vibration from the foundation, with a wider vibration reduction frequency band and a more comprehensive effect. This invention allows for convenient adjustment of the spring pre-compression by changing the thickness of the rigid adjustment shim, thereby altering the overall dynamic stiffness and damping characteristics of the shock absorption mechanism, making it suitable for different motor loads and vibration environments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the shock absorption mechanism of this utility model; Figure 3 This is an exploded view of the shock absorption mechanism of this utility model.

[0011] The attached diagram lists the components represented by each number as follows: 1. Motor body; 2. Shock absorption mechanism; 11. Fixing feet; 12. Bolts; 21. Soft rubber pad; 22. Rigid partition; 23. Hard rubber pad; 24. First honeycomb hole; 25. Second honeycomb hole; 26. Rigid adjusting shim; 27. Spring; 28. Mounting hole. Detailed Implementation

[0012] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0013] like Figures 1 to 3 As shown, a motor with a vibration reduction structure includes a motor body 1, fixed feet 11 are fixed on both sides of the bottom of the motor body 1, and vibration damping mechanisms 2 are installed at both ends of the bottom of the fixed feet 11. The shock absorption mechanism 2 includes a rigid partition 22, a flexible rubber pad 21 is installed on the top of the rigid partition 22, the upper surface of the flexible rubber pad 21 is in contact with the lower surface of the bottom of the fixed foot 11, and a hard rubber pad 23 is installed on the bottom of the rigid partition 22. In the above, the soft rubber pad 21 is made of a softer material. When the motor body 1 vibrates, it can absorb high-frequency vibrations and quickly convert the high-frequency, low-amplitude vibration energy generated by the motor itself into heat energy for consumption, preventing high-frequency vibrations from being transmitted upwards. This can protect the internal structure of the motor body 1 and reduce the noise generated by vibration. The rigid baffle 22 is located in the middle of the damping mechanism 2. It has high rigidity and can evenly distribute the concentrated load or impact force from the motor body 1 to the hard rubber pad 23. At the same time, it can block the direct transmission of vibration between the soft rubber pad 21 and the hard rubber pad 23. The hard rubber pad 23 is harder than the soft rubber pad 21, which can provide support rigidity and static bearing capacity, and isolate low-frequency vibrations from the foundation. When subjected to large elastic deformation, it can absorb and buffer a large amount of impact energy. Through the three-layer superposition of the soft rubber pad 21, the rigid baffle 22 and the hard rubber pad 23, the vibration from high frequency to low frequency can be better handled.

[0014] Please refer to it again. Figure 3 As shown, a plurality of first honeycomb holes 24 are provided above the soft rubber pad 21, and the first honeycomb holes 24 penetrate the bottom of the soft rubber pad 21. A plurality of second honeycomb holes 25 are provided above the hard rubber pad 23, and the second honeycomb holes 25 do not penetrate the bottom of the hard rubber pad 23. A spring 27 is provided inside the second honeycomb holes 25. A plurality of rigid adjusting shims 26 are installed at the bottom of the rigid partition 22. The rigid adjusting shims 26 are located above the second honeycomb holes 25, and the bottom of the rigid adjusting shims 26 is in contact with the top of the spring 27. It should be noted that the thickness of the soft rubber pad 21 is relatively small, while the thickness of the hard rubber pad 23 is relatively large. As described above, the first honeycomb hole 24 in the soft rubber pad 21 can greatly increase the local softness of the material. Combined with the small thickness of the soft rubber pad 21, it can dissipate energy under slight deformation, which can effectively suppress the high-frequency micro-amplitude vibration of the motor body 1. At the same time, the walls of the first honeycomb hole 24 squeeze and rub against each other during vibration, which can convert the mechanical energy of high-frequency vibration into heat energy, thereby quickly eliminating these vibrations and preventing noise from being transmitted outward. The spring 27, which is set in the second honeycomb hole 25, is fixed in the second honeycomb hole 25 and ensures that the spring 27 only undergoes the designed vertical deformation. In conjunction with the hard rubber pad 23, it can provide low stiffness characteristics, which can effectively isolate the low-frequency vibration of the motor body 1. At the same time, the stiffness of the spring 27 can be adjusted by changing the thickness of the rigidity adjustment shim 26.

[0015] Please refer to the following: Figure 2 and Figure 3 As shown, the top and bottom of the rigid partition 22 are provided with positioning grooves, and the bottom of the flexible rubber pad 21 and the top of the second honeycomb hole 25 are both fitted into the positioning grooves. In the above-mentioned configuration, the positioning grooves provided above and below the rigid partition 22 can limit the position of the flexible rubber pad 21 and the hard rubber pad 23, preventing misalignment of the flexible rubber pad 21, the rigid partition 22 and the hard rubber pad 23 during assembly, ensuring that the flexible rubber pad 21, the rigid partition 22 and the hard rubber pad 23 can maintain their correct position during installation, thus ensuring their shock absorption effect.

[0016] Please refer to the following: Figure 1 and Figure 3 As shown, a mounting hole 28 is provided in the middle of the flexible rubber pad 21, the rigid partition 22 and the hard rubber pad 23. The flexible rubber pad 21, the rigid partition 22 and the hard rubber pad 23 are fixed to the bottom of the fixed foot 11 by bolts 12 passing through the mounting hole 28. As described above, by means of the mounting holes 28 provided in the middle of the flexible rubber pad 21, the rigid partition 22 and the hard rubber pad 23, the bolts 12 pass through the mounting holes 28 and the through holes at the bottom of the fixing feet 11, the shock absorption mechanism 2 can be fixed to the bottom of the fixing feet 11 as a whole.

[0017] The working principle of this utility model is as follows: The vibration generated by the motor body 1 during operation is transmitted downwards to the damping mechanism 2 through the fixed feet 11 at its bottom. The vibration first acts on the soft rubber pad 21. Due to its soft material and the presence of through-holes 24, the soft rubber pad 21 easily undergoes slight deformation when subjected to high-frequency, low-amplitude vibrations. Furthermore, the walls of the first honeycomb holes 24 rub and compress against each other, rapidly converting the mechanical energy of the vibration into heat energy, thus efficiently absorbing and weakening high-frequency vibrations, reducing outward transmission and noise generation. After initial attenuation by the soft rubber pad 21, the vibration is transmitted to the intermediate rigid partition 22. The rigid partition 22, with its high rigidity, absorbs and weakens the vibration. Concentrated forces or impacts from the motor feet are evenly distributed across the entire plane, while physically blocking the direct transmission of vibration between the upper and lower rubber pads, avoiding mutual interference of vibration characteristics. The homogenized force continues to be transmitted to the bottom hard rubber pad 23 and the built-in spring 27. The hard rubber pad 23 provides the main static support stiffness, bears the weight of the motor, and isolates low-frequency vibrations from the mounting base. The non-through second honeycomb hole 25 inside and the spring 27 inside the hole together form a low-stiffness elastic system. When subjected to large deformation, the spring 27 undergoes compression deformation, working in conjunction with the hard rubber pad 23 to absorb and buffer a large amount of impact energy, achieving effective isolation of low-frequency vibrations.

[0018] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A motor with a vibration reduction structure, characterized in that: Includes a motor body (1), with fixed feet (11) fixed on both sides of the bottom of the motor body (1), and shock absorption mechanisms (2) installed at both ends of the bottom of the fixed feet (11). The shock absorption mechanism (2) includes a rigid partition (22), a soft rubber pad (21) is installed on the top of the rigid partition (22), the upper surface of the soft rubber pad (21) is in contact with the lower surface of the bottom of the fixed foot (11), and a hard rubber pad (23) is installed on the bottom of the rigid partition (22).

2. The motor with a vibration reduction structure according to claim 1, characterized in that: The soft rubber pad (21) has several first honeycomb holes (24) on its upper surface, and the first honeycomb holes (24) penetrate the bottom of the soft rubber pad (21). The hard rubber pad (23) has several second honeycomb holes (25) on its upper surface, and the second honeycomb holes (25) do not penetrate the bottom of the hard rubber pad (23).

3. A motor with a vibration reduction structure according to claim 2, characterized in that: A spring (27) is provided inside the second honeycomb hole (25), and a number of rigid adjustment pads (26) are installed at the bottom of the rigid partition (22). The rigid adjustment pads (26) are located above the second honeycomb hole (25), and the bottom of the rigid adjustment pads (26) is in contact with the top of the spring (27).

4. A motor with a vibration reduction structure according to claim 1, characterized in that: The rigid partition (22) is provided with positioning grooves at both the top and bottom, and the bottom of the soft rubber pad (21) and the top of the second honeycomb hole (25) are both fitted into the positioning grooves.

5. A motor with a vibration reduction structure according to claim 1, characterized in that: The flexible rubber pad (21), rigid partition (22) and hard rubber pad (23) are provided with mounting holes (28) in the middle. The flexible rubber pad (21), rigid partition (22) and hard rubber pad (23) are fixed to the bottom of the fixed foot (11) by bolts (12) passing through the mounting holes (28).

Images