Motor vibration---motor mixing reason
Third, the reason for motor mixing
1. Motor vibration is often caused by uneven air gap, which causes single-sided electromagnetic pulling force, and the single-sided electromagnetic pulling force further increases the air gap. This electromechanical mixing acts as motor vibration.
2. The axial movement of the motor is caused by the gravity of the rotor itself or the installation level and the magnetic center is not correct. The electromagnetic tension caused by the motor causes the axial movement of the motor to cause the motor vibration to increase. In severe cases, the shaft is ground and the temperature of the bearing is increased. Rapidly rising. Gears and couplings associated with the motor are faulty. This kind of failure mainly manifests as poor gear occlusion, serious tooth wear, poor lubrication of the wheel, skewing and misalignment of the coupling, tooth profile of the gear coupling, incorrect tooth pitch, excessive clearance or serious wear, which will cause certain vibration.
Defects in the structure of the motor itself and installation problems. This kind of failure mainly manifests as the ellipse of the journal, the bending of the shaft, the gap between the shaft and the bearing bush is too large or too small, and the rigidity of the bearing seat, the foundation plate, a part of the foundation and even the entire motor installation base is insufficient, and the motor and the base plate are fixed. Not secure, the foot bolts are loose, and the bearing housing and the base plate are loose. The excessive or too small gap between the shaft and the bearing bush can not only cause vibration but also cause abnormal lubrication and temperature of the bearing bush.
3. Load-driven vibration of motor drag
Typical Case:
Turbine generator turbine vibration, motor drag fan, pump vibration, causing motor vibration.
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