Inner core chuck cable switching device

The invention relates to a cable switching device applied to a novel bypass cable operation method of a distribution network line ring main unit. An inner core chuck cable switching device is characterized by comprising a first inner core chuck and a main insulating cylinder; a main insulating cylinder through hole is formed in the main insulating cylinder, and a first inner core chuck is installed in the main insulating cylinder through hole; a rotary through hole is formed in the main insulating cylinder, and the rotary through hole is communicated with the main insulating cylinder through hole; a second rotary socket of the first inner core chuck is located at the rotary through hole; the first inner core chuck comprises an annular disc, a sliding block and a conductive arc-shaped clamping piece; a cable connecting through hole is formed in the middle of the annular disc, 3-4 sliding grooves are formed in the annular disc in the radial direction, sliding blocks matched with the sliding grooves are arranged