Underwater V-shaped fork type automatic hooking device

The embodiment of the invention discloses an underwater V-shaped fork type automatic hooking device. The device comprises a support, a disc with a hole, a hydraulic cylinder hinged fulcrum shaft, a hydraulic cylinder, a piston rod, a V-shaped fork, a non-return spring bolt, an extension spring, a non-return spring bolt and an annular ring with a handle. The disc with the hole is used for being installed on an underwater mechanical arm, the support is welded to the disc with the hole, the hydraulic cylinder hinged fulcrum shaft is welded to the support and supports the hydraulic cylinder, the piston rod is assembled in the hydraulic cylinder, the V-shaped fork is welded to the support, and the check spring bolt is installed on the V-shaped fork through the spring bolt hinged fulcrum shaft. A spring bolt hydraulic hinge supporting pin on the V-shaped fork is assembled in a strip-shaped frame of the piston rod, a spring bolt spring hinge supporting pin on the V-shaped fork is connected with an extension spring,