Novel torsional spring type safe and labor-saving cover plate

A novel torsion spring type safe and labor-saving cover plate comprises bottom plates, a frame plate and fences, the two bottom plates are symmetrically installed on the front side and the rear side of the frame plate through rotating shaft supports, the fences are installed on the two bottom plates, one end of each fence is rotationally connected with an inserting hole in the corresponding frame plate, and the fences are fixed to the frame plate after being pulled up. The torsion spring device is arranged between the lower surface of the bottom plate and the frame plate, the torsion spring device comprises a torsion spring shaft, torsion springs, a shaft bracket and a positioning plate, a fixing ring is arranged below the bottom plate, the shaft bracket is arranged on the frame plate, the positioning plate is arranged on the frame plate below the shaft bracket, the torsion spring shaft is arranged on the shaft bracket, and a plurality of torsion springs are arranged on the torsion spring shaft. The long end