Special telescopic insulation grounding rod for ultrahigh voltage transmission lines

The utility model discloses a special telescopic insulation grounding rod for ultrahigh voltage transmission lines, comprising an outer pipe. The outer pipe is internally provided with an inner pipe, and the front end of the inner pipe extends outside the outer pipe to be provided with a wire locking device; a ground wire fixing frame is arranged on the wire locking device and is provided with a ground wire; the rear end of the outer pipe is provided with a rotary sleeve, the inner wall of the rotary sleeve is provided with a ring-shaped groove, and the outer wall of the outer pipe is provided with a ring-shaped boss; the rotary sleeve is internally provided with a nut, the outer pipe is internally provided with a push rod, and the rear end of the push rod is provided with a screw; the two sides of the push rod are respectively provided with a through groove, and the outer pipe is internally provided with a fixed frame; the front end of the push rod is provided with a cone body; the push rod is internally provided with a fixed rod, the rear end of the fixed rod is connected with the fixed frame, the upper end of the fixed rod penetrates through the cone body to be provided with a guide seat, the side wall of the guide seat is provided with four dovetail grooves, the guide seat is internally provided with four tensioning sheets, and the outer surfaces of the tensioning sheets are provided with inverted teeth; and each tensioning sheet is provided with a guide block, the four tensioning sheets are positioned at the outer circumference of the cone body and hoop springs are arranged on the outer circumferences of the four tensioning sheets.