The invention aims to provide a carbon powder accumulation prevention direct-current motor for a barrier gate so as to avoid short circuit between commutator segments, avoid short circuit between a commutator and nearby parts and prolong the service life of the commutator, and the carbon powder on the commutator can be cleaned. In order to achieve the purpose, the invention adopts the following technical scheme: the carbon powder accumulation prevention direct-current motor for the barrier gate comprises a machine shell, a rotor is arranged in the machine shell, the rotor comprises a rotatingshaft, a front end and a rear end of the rotating shaft are rotationally fixed to the machine shell through bearings, the commutator comprises an insulating base body and commutator segments, hook parts are arranged at the front ends of the commutator segments, fan blades are arranged on a rear side of the commutator, each fan blade comprises a ring part and a plurality of blades located on the circumferential outer side of the ring part, the ring parts and the rotating shaft are coaxially fixed, and the blades are arranged in a central symmetry mode with the axis of the rotating shaft as thecenter and annularly and evenly arranged at intervals.

Carbon powder accumulation prevention direct-current motor for barrier gate

The invention provides a brush DC motor, the both ends of a motor shell is connected fixedly with left and right cover, the left cover is provided with a left bearing location hole and a left bearing, the right cover is provided with a right bearing location hole and a right bearing, the left shaft end of rotor shaft is used for slewing bearing through the left bearing, the right shaft end of rotor shaft is used for slewing bearing through the right bearing, the device is characterized that the right end face of the right shaft outer ring is made axial displacement restricting through Shaft with a collar arranged on rotor shaft; between the left shaft and commutator is provided with conical spring, the small head end of the conical spring is supported with the right side end of the left shaft inner ring, the big end is supported with the bottom end of the commutator, the left side end of the left bearing outer ring is limited by step of the left bearing location hole. The device has the advantages that the stator shaft has the reliable axial displacement restricting, the commutator has simple technology, light weight, low cost, solid structure, good heat dissipation and can meet high speed work requirement.

Chen Zhenning

Papers

Brush DC motor