The utility model relates to a device for the electric power construction. By the technical problem who solves existence in operation process is acted as go -between to one side to the change pole at present, the utility model provides a supplementary utensil for changing pole is acted as go -between to one side, it includes a dead lever, its characterized in that: the dead lever on be equipped with locking device, locking device include a U type bolt, it is fixed that the dead lever passes the top of pole wall and a U type bolt of a U type bolt and dead lever, still including the pressure strip, being equipped with the bolt hole on the pressure strip, two shanks of bolt of a U type bolt pass the bolt hole on the pressure strip and are equipped with lock nut in the bottom of shank of bolt, the top of dead lever is equipped with first tractive ring, forms a contained angle between a first tractive hoop lateral buckling and the dead lever. This appliance structure is reasonable, the preparation is simple and convenient, and the flexible operation can thoroughly be solved and carry out the pole at present and act as go -between to one side and change the technical problem who exists in the operation, and messenger operating efficiency is greatly improved.