Dustproof generator rotor insulation monitoring brush device

The invention discloses a dustproof generator rotor insulation monitoring brush device. The device comprises a brush lifting cylinder, a rubidium magnet is arranged in the brush lifting cylinder, an electromagnet comprises an electromagnet core and an electromagnetic coil, after the electromagnetic coil is powered on, the magnetic pole of the electromagnet and the rubidium magnet repel each otherto jack up the brush lifting cylinder, a sealing film on the device is lifted along with the brush lifting cylinder, and a positioning pin installed on the side face of the device limits the lifting height of the brush lifting cylinder; in the lifting process of the brush lifting cylinder, external air enters the breathing holes through the filter pieces and enters a gap between the brush liftingcylinder and the machine base; and after the electromagnetic coil is powered off, the brush lifting cylinder quickly falls back under the attraction action of the rubidium magnet and the electromagnetic iron core. 一种防尘型发电机转子绝缘