Motor mounting device with shock absorbing function

Abstract

The utility model provides a motor mounting device with shock attenuation function belongs to motor mounting device technical field. The problem that traditional rigid installation mode cannot simultaneously isolate vibration transmission produced in motor operation is solved. Including apron, middle layer structure and bottom plate, the apron sets up at the bottom of motor, the middle layer structure sets up between apron and bottom plate, the middle layer structure includes elastic sheet and the shock absorption unit of periodic arrangement, the shock absorption unit includes T type elastic paddle and the upper mass block and lower mass block of the upper and lower surface setting thereof, the bottom surface of apron sets up the first accommodating portion of recessing to the inside, the top surface of bottom plate sets up the second accommodating portion of recessing to the inside. It is mainly used for isolation and absorption wide band vibration produced under complex working condition of motor.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor mounting devices, and in particular relates to a motor mounting device with shock absorption function. Background Technology

[0002] Electric motors are the core driving components of various industrial equipment. During operation, especially during startup, shutdown, and load changes, the electromagnetic effects inside the motor and the mass imbalance of rotating parts such as the rotor will inevitably generate vibration and noise. If these vibrations are transmitted to the equipment base or housing through the mounting structure, they may cause structural fatigue, generate noise pollution, and affect the performance and lifespan of other precision components connected to it.

[0003] Currently, most motors are installed using rigid mounting, such as directly fixing the motor base to the equipment base with bolts. While this method is simple in structure and reliable in connection, it lacks effective vibration damping and buffering, transmitting almost all the vibration energy generated by the motor and failing to isolate vibration.

[0004] To address this issue, existing technologies have developed vibration damping devices employing elastic elements such as rubber pads and springs. While these solutions can attenuate high-frequency vibrations to some extent, their damping performance, particularly their isolation effect on mid- and low-frequency vibrations, is often limited. Furthermore, simple elastic support structures are typically designed for specific frequencies and are ill-suited to effectively handle the wideband vibrations generated by motors during complex operating conditions such as starting, stopping, and variable speed operation. More complex vibration damping devices, while potentially offering superior performance, often suffer from structural complexity, high cost, or insufficient reliability. Utility Model Content

[0005] In view of this, the present invention aims to propose a motor mounting device with shock absorption function to solve the problem that traditional rigid mounting methods cannot simultaneously isolate the transmission of vibrations generated during motor operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a motor mounting device with shock absorption function, comprising a cover plate, a middle layer structure, and a base plate, wherein the cover plate is disposed at the bottom of the motor; the middle layer structure is disposed between the cover plate and the base plate, the middle layer structure comprising an elastic sheet and periodically arranged shock-absorbing units; the shock-absorbing unit comprises a T-shaped elastic tab and an upper mass block and a lower mass block disposed on its upper and lower surfaces, the bottom surface of the cover plate is provided with an inwardly recessed first receiving portion, and the top surface of the base plate is provided with an inwardly recessed second receiving portion.

[0007] Furthermore, the elastic sheet is provided with multiple arrayed U-shaped hollow grooves, each hollow groove having the same opening direction, and a T-shaped elastic lever is formed within the enclosed area of ​​each hollow groove.

[0008] Furthermore, the upper mass block and the lower mass block are fixed to the upper and lower surfaces of the T-shaped elastic lever by screws, respectively.

[0009] Furthermore, the cover plate, elastic sheet, and base plate are provided with bolt holes around their perimeter for connecting bolts to pass through, and the connecting bolts pass through these bolt holes in sequence to fix the motor and the mounting device.

[0010] Furthermore, the elastic sheet is a one-piece molded structure made of metal material.

[0011] Furthermore, the shock-absorbing units are arranged in a rectangular array on the elastic sheet.

[0012] Furthermore, the depth of the first and second receiving portions is greater than the thickness of the damping unit.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model sets up a periodically arranged array of shock-absorbing units in the middle layer structure, which can generate a Bragg band gap. The periodically arranged array of shock-absorbing units can generate a Bragg band gap, effectively blocking and attenuating the transmission of mid-to-high frequency vibration waves. Each shock-absorbing unit includes a T-shaped elastic plate, an upper mass block, and a lower mass block, thus forming a local resonance system. When the motor is running, these shock-absorbing units can generate multiple local resonances for vibrations of different frequencies, and can generate a local resonance band gap in the low-frequency band. Through the periodically arranged shock-absorbing units and the shock-absorbing structure within the shock-absorbing units, the wide-band vibration isolation of the motor is achieved, which can effectively absorb and isolate the vibration energy generated by the motor under complex working conditions. 2. This utility model can adjust the frequency range of the Bragg bandgap by changing the periodic arrangement or material properties of the vibration-absorbing unit. At the same time, by changing the mass of the upper and lower mass blocks or the stiffness of the T-shaped elastic lever, the position of the local resonance bandgap can be controlled, thereby customizing it according to the vibration characteristics of different models and operating conditions of motors to achieve the best vibration isolation effect. 3. The cover plate, middle layer structure and bottom plate of this utility model are connected into a whole by connecting bolts, which provides a stable installation foundation for the motor. The receiving part on the cover plate and the bottom plate provides space for the installation of the internal shock absorption unit and the vibration of the shock absorption structure. At the same time, it ensures that the overall structure is evenly stressed when bearing load, ensuring the rigidity and stability of the overall structure and effectively extending the service life of the motor and connected equipment. 4. This utility model can isolate most of the broadband vibration energy from the vibration transmission path and dissipate it inside the installation structure, thereby significantly reducing the vibration transmitted to the equipment base. It fundamentally solves the problems caused by motor vibration, such as structural resonance, high noise, loose connecting parts, or damage to the performance of precision equipment, and improves the operational stability and reliability of the entire equipment system. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the shaft side structure of the motor mounting device with shock absorption function and the motor connection described in this utility model; Figure 2 This is a front structural diagram of the connection between the motor mounting device with shock absorption function and the motor according to the present invention. Figure 3 This is a schematic diagram of the axial side structure of the upper cover plate of a motor mounting device with shock absorption function according to the present invention. Figure 4 This is a schematic diagram of the axial side structure of the middle layer plate of a motor mounting device with shock absorption function according to the present invention. Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the axial side structure of the elastic lever of a motor mounting device with shock absorption function according to the present invention. Figure 7 This is a schematic diagram of the axial structure of the lower base plate of a motor mounting device with shock absorption function according to the present invention.

[0015] In the picture: 1. Motor; 2. Upper cover plate; 3. Middle plate; 31. Upper mass block; 32. Elastic sheet; 33. Lower mass block; 34. Screw; 4. Lower base plate; 5. Connecting bolts. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0017] Detailed implementation method: See Figure 1-7This embodiment describes a motor mounting device with vibration damping function, comprising a cover plate 2, a middle layer structure 3, and a base plate 4. The cover plate 2 is disposed at the bottom of the motor 1 and is used to receive and transmit vibrations generated during motor operation. The middle layer structure 3 is disposed between the cover plate 2 and the base plate 4. The middle layer structure 3 includes an elastic sheet 32 ​​and periodically arranged shock-absorbing units. The middle layer structure 3 is used to isolate and absorb vibrations. The elastic sheet 32 ​​is made of a metal material with good fatigue strength and elasticity, such as spring steel or phosphor bronze. When vibration waves propagate in this periodic structure, strong destructive interference will occur due to the Bragg scattering effect of the structure, thereby forming a Bragg bandgap in a specific mid-to-high frequency range. Vibrations within this bandgap frequency range will not be able to effectively pass through the structure, and their energy will be greatly attenuated. The shock-absorbing unit includes a T-shaped elastic plate and upper mass blocks 31 and lower mass blocks 33 disposed on its upper and lower surfaces. When vibrations are transmitted from the cover plate 2... When the upper mass block 31 is passed to the lower mass block 33, it will stimulate the local resonance of the system, thereby converting the transmitted vibration energy into the potential energy of the T-shaped elastic lever through repeated deformation and finally dissipating it. By adjusting the stiffness of the elastic lever or the mass of the upper mass block 31 and the lower mass block 33, the natural frequency of the local resonance system can be precisely tuned, thereby generating a local resonance bandgap in the target low frequency band and achieving efficient filtering of specific low frequency vibrations. The bottom surface of the cover plate 2 is provided with an inwardly recessed first receiving part, and the top surface of the base plate 4 is provided with an inwardly recessed second receiving part. The first receiving part and the second receiving part are respectively used to receive the upper mass block 31 and the lower mass block 33, ensuring that after assembly, there is an appropriate gap between the upper mass block 31 and the lower mass block 33 and the cover plate 2 and the base plate 4, avoiding rigid contact, and making the bottom surface of the entire device flat, which is convenient for installation and fixation. The base plate 4 and the cover plate 2 together form a rigid external frame, providing stable support and protection for the internal flexible shock absorption unit.

[0018] The elastic sheet 32 ​​is provided with multiple arrayed concave-shaped hollow grooves, and the opening direction of each hollow groove is consistent. A T-shaped elastic lever is formed in the enclosed area of ​​each hollow groove. The concave-shaped hollow grooves arranged in a rectangular array are processed on the elastic sheet 32 ​​by stamping process, so that a T-shaped elastic lever is formed in the enclosed area of ​​each hollow groove.

[0019] The upper mass block 31 and the lower mass block 33 are respectively fixed to the upper and lower surfaces of the T-shaped elastic lever by screws 34. The connection of screws 34 achieves a firm mechanical locking, ensuring that the upper mass block 31, the T-shaped elastic lever and the lower mass block 33 can still work together as a whole under the continuous vibration environment of the motor 1, avoiding abnormal noise or impact due to loosening, ensuring the reliability of the vibration absorption unit in long-term operation. In addition, the connection of screws 34 facilitates the flexible adjustment of system parameters during the design and debugging stage, and the vibration absorption efficiency can be adjusted by replacing mass blocks of different masses.

[0020] The cover plate 2, elastic sheet 32 ​​and base plate 4 are provided with bolt holes for connecting bolts 5 to pass through. The connecting bolts 5 pass through these bolt holes in sequence to fix the motor 1 to the mounting device, ensuring that the force generated by the motor 1 during operation can be effectively transmitted to the core shock-absorbing component of the middle structure 3 through the cover plate 2, rather than being concentrated in a local area.

[0021] The elastic sheet 32 ​​is a one-piece metal structure. The elastic sheet 32 ​​is formed by stamping a complete plate. During the stamping process, an array of concave-shaped hollow grooves are simultaneously processed on the elastic sheet 32, so that the solid parts between each hollow groove form a complete T-shaped elastic lever that can undergo elastic deformation.

[0022] The shock-absorbing units are arranged in a rectangular array on the elastic sheet 32. The rectangular array arrangement makes each shock-absorbing unit evenly distributed on the elastic sheet. When the motor vibration is transmitted to the middle structure through the cover plate, the excitation force can be evenly distributed to each shock-absorbing unit, avoiding local stress concentration and contributing to the long-term reliability of the structure.

[0023] The depth of the first and second receiving parts is greater than the thickness of the damping unit. Under vibration excitation, the T-shaped elastic lever will reciprocate bending and twisting deformation, causing the upper mass block 31 and the lower mass block 33 to produce slight displacement. The design of the depth being greater than the thickness provides space for the movement of the upper mass block 31 and the lower mass block 33 during vibration, effectively preventing the mass block from colliding with the bottom or top of the receiving part under dynamic working conditions, avoiding nonlinear vibration and noise caused by friction and impact, and also protecting the T-shaped elastic lever from excessive impact stress, thereby improving the service life and reliability of the entire damping device.

[0024] The working principle of this utility model is as follows: When motor 1 needs vibration reduction, the middle layer structure 3 is first placed between the cover plate 2 and the bottom plate 4, ensuring that the upper mass block 31 and the lower mass block 33 are embedded in their respective receiving parts. Then, motor 1, cover plate 2, middle layer structure 3, and bottom plate 4 are installed and fixed with connecting bolts 5. The broadband vibration generated by motor 1 during operation is transmitted to the middle layer structure 3 through cover plate 2. Low-frequency vibration is mainly absorbed by the local resonance mechanism of each vibration absorption unit, while mid-to-high frequency vibration is blocked by the band gap generated by the periodic structure. In the end, most of the vibration energy is isolated and dissipated inside the installation device, and only a very small amplitude vibration is transmitted to the equipment base, thus achieving excellent vibration reduction and noise reduction effect.

[0025] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A motor mounting device with shock absorption function, characterized in that: The device includes a cover plate (2), a middle layer structure (3), and a bottom plate (4). The cover plate (2) is located at the bottom of the motor (1). The middle layer structure (3) is located between the cover plate (2) and the bottom plate (4). The middle layer structure (3) includes an elastic sheet (32) and periodically arranged shock-absorbing units. The shock-absorbing unit includes a T-shaped elastic sheet and an upper mass block (31) and a lower mass block (33) arranged on its upper and lower surfaces. The bottom surface of the cover plate (2) is provided with an inwardly recessed first receiving part, and the top surface of the bottom plate (4) is provided with an inwardly recessed second receiving part.

2. The motor mounting device with shock absorption function according to claim 1, characterized in that: The elastic sheet (32) is provided with multiple arrayed concave-shaped hollow grooves, each hollow groove has the same opening direction, and a T-shaped elastic lever is formed in the enclosed area of ​​each hollow groove.

3. The motor mounting device with shock absorption function according to claim 1, characterized in that: The upper mass block (31) and the lower mass block (33) are fixed to the upper and lower surfaces of the T-shaped elastic lever by screws (34).

4. A motor mounting device with shock absorption function according to claim 1, characterized in that: The cover plate (2), elastic sheet (32) and base plate (4) are provided with bolt holes for connecting bolts (5) to pass through. The connecting bolts (5) pass through these bolt holes in sequence to fix the motor (1) to the mounting device.

5. A motor mounting device with shock absorption function according to claim 1, characterized in that: The elastic sheet (32) is a one-piece metal material structure.

6. A motor mounting device with shock absorption function according to claim 1, characterized in that: The shock-absorbing units are arranged in a rectangular array on the elastic sheet (32).

7. A motor mounting device with shock absorption function according to claim 1, characterized in that: The depth of the first and second accommodating portions is greater than the thickness of the damping unit.

Images