Tool for bending steel plate

The tool comprises a bottom plate, a fulcrum shaft and a barrel, the fulcrum shaft is vertically arranged on the plate face of the bottom plate, a shaft body of the fulcrum shaft is fixedly connected with the inner wall of the barrel through a supporting rod, the barrel and the fulcrum shaft are coaxial, the top end of the fulcrum shaft is rotationally connected with a rotating piece, the rotating piece is fixedly connected with one end of a square rod, and a handle is arranged at the other end of the square rod. The square rod is horizontally arranged, a rod body of the square rod is connected with the vertical rod through an adjusting mechanism, the adjusting mechanism is used for adjusting the position of the vertical rod and fastening the vertical rod, the vertical rod is vertically arranged, the bottom end of the vertical rod is sleeved with a pressing wheel, an inserting plate piece which is in the same level with the pressing wheel is fixed outside the barrel body, the inserting plate piece is in a C s