The utility model provides a power maintenance is with passing traditional thread binding putting, include: pipe (23), pipe (23) left end fixed mounting has end cover (12), and end cover (12) inside sliding fit has slide bar (7), and slide bar (7) left end fixed mounting has pull ring (13), and slip -ring (20) have been cup jointed in slide bar (7) surface left side, and fixed mounting has a coilspring (14) between slip -ring (20) and end cover (12), slide bar (7) surperficial right side fixed mounting has the lantern ring (6), and the lantern ring (6) upside fixed mounting has connecting rod(22), and connecting rod (22) upper end fixed mounting has backup pad (5), and backup pad (5) upside fixed mounting has constant head tank (4), and constant head tank (4) are inside has cup jointed first gasbag (1), and constant head tank (4) surface mounting has second gasbag (2). The utility model discloses appear the phenomenon that the electric wire floats when can avoid passing the line aloft, improved the success rate that passes the line.