Overhauling tool for V-type single-string insulators of +/-660kV DC transmission line

The utility model relates to an overhauling tool for a V-type single-string insulators of a +/-660kV DC transmission line. The overhauling tool comprises clamps clamped at two sides of a V-type insulator string and a tensioning device connected between the clamps; each clamp comprises a V-string upper clamp fixedly connected to hardware-fitting hanging point angle steel at the side of a tower body, an cross arm upper clamp fixedly connected to a cross arm wrapper sheet, and a single-string clamp fixedly connected to the upper side of a V-type serial-connection sheet; and the tensioning device is a combined body of a mechanical drive screw and a hydraulic device. The utility model has the advantages of reasonable structure, high integral strength and bearing force, small size, light weight, working reliability, and the like and provides a reliable guarantee for daily overhauling after safe commissioning and operation of the 660kV power transmission line.