Vibration fatigue-resisting carbon brush device of electric variable pitch propeller

The invention discloses a vibration fatigue-resisting carbon brush device of an electric variable pitch propeller, and the device is composed of a brush holder, a cover board, a carbon block componentand other components, wherein an upper part of the brush holder is provided with a carbon block sliding chute, a middle part of the carbon block sliding chute is provided with a spring shape preserving groove, and a telescopic moving track is provided for the carbon block component. Further, the lower part at the back of the brush holder is provided with a threaded hole, the threaded hole is fixedly connected with the cover board through a screw, thus, complete rectangular sliding chute is formed, and a opening hole is formed on the cover board and used for penetration of a wire of the carbonblock. Moreover, the carbon block wire is a braided wire, the carbon block wire orderly penetrates through a spring and a plastic sleeve, the carbon block moves telescopically and freely in the carbon block sliding chute, and