Dustproof motor for engineering machinery

Abstract

The utility model relates to motor dustproof technical field, and disclose a dustproof motor for engineering instrument, including motor body, the bearing end cover of setting in the output end of motor body and the motor shaft of wearing in the bearing end cover, the shaft end outside of motor shaft is equipped with the shaft end double -sealed structure of self -compensation. The dustproof motor for engineering instrument, the outer dustproof ring is blocked dust initially through conical flow guide surface, the inner layer elastic sealing assembly is tightly combined through lip structure and motor shaft, forms double dustproof barrier, dust invasion amount reduces more than 90% than existing motor, the continuous axial pressure of annular wave spring can offset the sealing gap change caused by vibration, the lip structure can adapt to the slight deviation of motor shaft, the sealing reliability keeps stable under the high vibration working condition, the sealing cavity pressure relief hole and one -way air permeable membrane cooperation, can discharge the high pressure air in the sealing cavity, avoid the deformation of rubber sealing pad caused by excessively high air pressure, prolong the service life of sealing element.

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