Three-phase short-circuit device for direct-current deicing overhead line

The utility model discloses a three-phase short-circuit device for a direct-current deicing overhead line, and relates to the technical field of direct-current deicing of power transmission lines. Comprising three wire locking devices, the wire locking devices are provided with copper wires respectively, the ends of the copper wires are fixed to the same copper column, each wire locking device comprises a wire hook, a guide hole is formed in the bottom of each wire hook, a rotating bolt is arranged in each guide hole, and a wire locking seat is arranged at the top of each rotating bolt. A copper wire is arranged on the side wall of the bottom of the wire hook, and the bottom of the rotating bolt is detachably connected with an insulating operating rod. The ends of the three copper wires are conducted through the copper columns, then the other ends of the copper wires are communicated with the power transmission line through the wire locking device, rapid short circuit of three phases of the overhead line powe