Cover closing stabilizing tool for watertight pressure-resistant equipment

The utility model belongs to the technical field of watertight motors, and particularly relates to a cover closing stabilizing tool for watertight pressure-resistant equipment, which comprises an assembly frame, a lifting plate is movably arranged at the bottom of an inner cavity of the assembly frame, an adjusting screw rod is connected to the bottom of the assembly frame in a threaded penetrating manner, and the top of the adjusting screw rod is rotatably connected with the lower surface of the lifting plate. A sliding plate is slidably arranged on the surface of the lifting plate, a top limiting plate is arranged above the sliding plate, a hydraulic rod is installed on the surface of the top of the assembling frame, the end of a piston rod of the electric hydraulic rod is connected with a pressing disc, a driving gear ring is rotatably arranged on the surface of the assembling frame, and screw driving machines are symmetrically arranged at the bottom of the driving gear ring. The piston rod of the novel hy