Lifting brush grounding device

The utility model discloses a lifting brush grounding device which comprises a base, a brush holder support is installed on the base, a wiring seat is fixedly installed on the base through a wiring bolt, a lifting brush holder is installed on the brush holder support, a brush box is installed on the lifting brush holder, an electric brush and a constant pressure spring are arranged on the brush box, and the electric brush and the constant pressure spring are arranged on the brush box. The top of the electric brush is connected with a constant pressure spring, and a locking seat is installed at the bottom of the brush seat support. Compared with an existing lifting brush grounding device, the lifting brush grounding device has the advantages that the design is reasonable, the structure is simple and compact, the stability of the carbon brush can be kept, when the carbon brush is checked or replaced during operation of the motor, the lifting brush grounding device is easy to disassemble, the whole carbon brush