Flexible suspension device for warning board of power transmission line

The invention discloses a flexible suspension device for a warning board of a power transmission line. The flexible suspension device is characterized by comprising the warning board, angle iron, U-shaped iron, an adjustable hook and a cover plate, the warning board is connected with one surface of the angle iron by screws, the other surface of the angle iron is connected with the U-shaped iron by a hexagon-headed bolt, a cylindrical connecting rod is arranged in a groove in one side of a hook body, the cover plate is fixedly connected onto the groove by hexagon-headed bolts in a covering manner and prevents the cylindrical connecting rod from dropping out, a large threaded hole is formed in the other side of the hook body, the threaded hole and a threaded rod are matched with each other to adjust the size of an opening of the hook so that the hook is applicable to different types of conducting wires, and a pressing piece is fixedly connected to the top of the threaded rod by a screw and is used for fixing a