In order to meet the requirement of the Coal Mine Safety Regulation about main shaft in the coal mine,that the wedged connector about wire rope of a winch must be overhauled each half month, based on force analysis,the connecting rod,splint and auxiliary support to lift height were designed. Both hydraulic jack and hydraulic pump were matched to form a new stable system to push, so fast nondestructive overhaul to the wire ropewedged connector was realized. The running efficiency and security of the lifting system were improved greatly.