Composite damping shell of medium-small type motors

Abstract

The invention relates to a composite damping shell of medium-small type motors. The composite damping shell comprises a stator iron core, end plates, pressure rings and a bracket, wherein the stator iron core is formed by laminating an octagon full-silicon steel sheet punched with an axial venting hole; two ends of the iron core are respectively provided with a damping member, and are respectively and fixedly connected with the bracket through the pressure rings and the end plates; and the bracket comprises an end ring, four ribs are respectively welded on the end ring in a direction of 45 DEG, and damping plates are adhered on the ribs. According to the implement of the invention, high-frequency electromagnetic vibration energy is absorbed, and high frequency electromagnetic vibration which has the maximum contribution to the vibration of a motor structure is reduced. Through an integrated design, integration of a shell and the iron core is realized, and the weight and the size are reduced compared with those of the conventional medium-small type motors. The composite damping shell can be applied to medium-small type asynchronous motors, and can also be widely applied to medium-small DC motors, medium-small synchronous motors and other kinds of medium-small type motors.

Description

technical field [0001] The invention relates to a medium and small motor, in particular to a damping shell for a medium and small motor. Background technique [0002] Through the vibration and noise test of small and medium-sized motors, it is found that the vibration acceleration and noise are generally relatively large, which not only seriously pollutes the environment and causes harm to the human body, but also affects the working quality and life of the production equipment it drives. Electromagnetic vibration and noise generated by electromagnetic force waves are one of the main sources of motor vibration and noise. At present, the vibration reduction and noise reduction of asynchronous motors is mainly based on the measures taken from the vibration source. Due to the constraints of the motor performance and volume weight, the reduction of the main vibration source of vibration noise - the electromagnetic excitation force is very limited. Therefore, it is necessary to ...

AI Technical Summary

Problems solved by technology

At present, the vibration reduction and noise reduction of asynchronous motors is mainly based on the measures taken from the vibration source. Due to the constraints of the motor performance and volume weight, the reduction of the main vibration source of vibration noise - the electromagnetic excitation force is very limited. Therefore, it is necessary to To reduce the impact of electromagnetic vibration noise on the vibration of the whole machine, measures must be taken from the vibration transmission path. In the existing technology, a vibration and noise suppression device is added to the surface of the machine base shell to achieve this. On the one hand, it causes an increase in the weight and size of the motor, and The bolts directly pass through the damping pad to connect with the machine base, and the vibration isolation in the transmission path is not really realized, and the vibration damping effect is greatly reduced; on the other hand, it affects the heat dissipation of the motor

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