External grounding construction device for well wall of deep well digging pile of electric power tower and use method of external grounding construction device

The invention discloses an electric power tower deep well digging pile well wall external application grounding construction device and a using method, and belongs to the technical field of electric power facilities. The electric power tower deep well digging pile well wall external application grounding construction device comprises a first arc-shaped plate and a second arc-shaped plate, and the lower surface of the first arc-shaped plate and the lower surface of the second arc-shaped plate are each fixedly provided with a plurality of connecting rods; an expansion assembly is arranged on the inner wall of the first arc-shaped plate; according to the device, an expansion assembly is arranged, a rotating rod is rotated, a driving bevel gear and a positioning plate are driven to rotate along with rotation of the rotating rod, and when the driving bevel gear rotates, a driven bevel gear drives a threaded rod to rotate under limiting of a limiting plate, so that a moving rod moves towards the outer side of a fix