Motor end cover bearing vibration damping structure

Abstract

A motor end cover bearing vibration damping structure relates to the technical field of motors. The technical problem to be solved is how to reduce the running noise and vibration of motors. The structure comprises a bearing chamber which is provided with a bearing accommodating cavity. A rotor bearing is arranged in the bearing accommodating cavity. The right part of the rotor bearing is coaxially sleeved with an annular vibration damping washer. The rotor bearing and the cavity wall of the bearing accommodating cavity are in tight fit with the vibration damping washer. The right edge of thevibration damping washer is bent inward, and then tightly abuts against the right end face of the rotor bearing. An annular cover plate is fixed on the bearing chamber. The cover plate is coaxial withthe vibration damping washer, and tightly presses the right end face of the vibration damping washer. A gap is left between the left part of the outer peripheral face of the rotor bearing and the cavity wall of the bearing accommodating cavity. The structure provided by the invention can reduce the running noise and vibration of motors.

Description

technical field [0001] The invention relates to motor technology, in particular to a technology of a motor end cover bearing vibration damping structure. Background technique [0002] The end cover bearing chamber of the motor is a part used to accommodate the rotor bearing on the motor, and is usually installed on the end cover of the motor. Such as figure 2 As shown, when the rotor 20 rotates, the rotor bearing 21 will generate noise and vibration. In order to reduce the noise and vibration of the rotor bearing 21 during operation, some motors put a bearing rubber sleeve 22 on the rotor bearing 21, and then put the rotor bearing Installed in the rigid end cover bearing chamber 23, since the bearing rubber sleeve 22 is arranged between the outer peripheral surface of the rotor bearing 21 and the inner wall of the end cover bearing chamber 23, it can effectively reduce the noise and vibration generated during the operation of the rotor bearing. However, the motor is subjec...

AI Technical Summary

Problems solved by technology

However, the motor is subjected to the joint action of the load under the limit state and the unilateral magnetic pulling force, and the radial force is extremely large, and its force can easily cause the bearing rubber sleeve to deform unilaterally. When the deformation is greater than the air gap between the stator and rotor of the motor When, it will make the motor rotor and stator friction, resulting in a lot of noise and vibration

[0003] In addition, due to the existence of the bearing rubber sleeve, the installation accuracy of the rotor bearing is easily affected by the friction deformation of the bearing rubber sleeve when it is installed into the bearing chamber of the end cover, which will increase the noise and vibration of the motor during operation

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