The utility model provides a locking device that moves of bolt type damper, it includes check washer and a plurality of heliciform preformed armor rods, the upper portion of check washer is the crotch form, and the top of crotch sets up two preformed armor rods installation locator protrusionss, and the substructure of check washer has the slot, and kong kuanyu bolt type damper fastening bolt's hexagon nut width suits, during the use, directly reinforces on operating bolt type damper, and is easy and simple to handle, and non -maintaining, can greatly reduce transmission line's operation maintenance cost, and economic benefits and social are showing. The preformed armor rods mounted position has not only been made clear to two preformed armor rods installation locator protrusionss that its check washer upper portion crotch top set up, still can prevent preformed armor rods landing from the check washer, and it is with the fixed check washer of preformed armor rods, not only can avoid the gold utensil to lead, the ground wire produces the stress concentration point, but also can realize maximum protection to the winding wire of preformed armor rods.