Disassembling and assembling device for moving contact of circuit breaker

The utility model relates to a breaker moving contact assembling and disassembling device, which comprises a positioning support seat, a screwing cylinder and a moving arc contact rotation stopping seat, the screwing cylinder is provided with a screwing cylinder rotation stopping pin used for being radially inserted into an air cylinder rotation stopping pin hole in an air cylinder, and the breaker moving contact assembling and disassembling device further comprises a rotation driving structure. The rotation driving structure comprises a speed reducing mechanism, the speed reducing mechanism is provided with a high-speed input component and a low-speed output component, the low-speed output component of the speed reducing mechanism is in transmission connection with the screwing barrel and can drive the screwing barrel to rotate around the axis of the screwing barrel, and the high-speed input component and the low-speed output component of the speed reducing mechanism are each provided with a screwing part fo