Generator shaft current grounding device

The utility model provides a generator shaft current grounding device which comprises a rotating shaft lantern ring, a brush holder support and a brush holder mechanism, and the rotating shaft lantern ring is sleeved on a front shaft of a generator. The two brush holder mechanisms are hinged to the two sides of the brush holder support through rotating shafts, torsional springs are installed on the rotating shafts, a force arm at one end of each torsional spring is fixedly connected with the brush holder support, the other force arm of each torsional spring is connected with the corresponding brush holder mechanism, and the conductive ends of the brush holder mechanisms are connected with the surface of the corresponding rotating shaft lantern ring under the action of the torsional springs. According to the technical scheme, the rotating shaft lantern ring is fixed to the front shaft of the motor in the sleeving mode, in the running process of the motor, generated shaft current is guided into the brush holder