The utility model provides a semicontinuous suspension type prevents rocking device of being qualified for next round of competitions, is including hanging hook component, hanger safety belt and a footboard subassembly, the hook component that hangs hang and take on two parallel and adjacent composite insulator clusters, the hook component that hangs pass through the hanger with the footboard subassembly and connect, and the footboard subassembly is located string hook component's below, it prevents rocking the pole to be equipped with on hanging hook component. Through the location pad of hanging the J type of taking couple cover and rubber on insulator chain, fill up in fill up the location in the top parcel of insulator the location, the effectual insulator of having protected.