Middle joint structure for single-column vertical telescopic isolation switch and isolation switch

The utility model discloses a middle joint structure for a single-column vertical telescopic isolation switch, which comprises an upper conductive tube joint, a lower conductive tube joint, a conductive band and two connecting pieces, wherein the upper conductive tube joint and the lower conductive tube joint are electrically conducted through the conductive band, both the upper conductive tube joint and the lower conductive tube joint are T-shaped and composed of a cross rod and a vertical rod, the bottom end of the vertical rod of the lower conductive tube joint is inserted into a lower conductive tube of the isolation switch and in expansion connection with the lower conductive tube, the bottom end of the vertical rod of the upper conductive tube joint is inserted into an upper conductive tube of the isolation switch and in expansion connection with the upper conductive tube, the cross rod of the lower conductive tube joint is fixedly arranged between one ends of the two connecting pieces, and the cross rod of the upper conductive tube joint is rotatably arranged between the other ends of the two connecting pieces. The utility model further discloses an isolation switch applying the middle joint structure. The middle joint structure and the isolation switch have the advantages of simple structure, convenient assembly and disassembly, reliable connection and ability of being conducive to guiding flow.