Deepwater winch with brake structure

The utility model discloses a deepwater winch with a brake structure. The deepwater winch with the brake structure comprises a main winding drum. A brake strap is arranged on the outer side of the main winding drum, one end of the brake strap is in rotary connection with a brake support, the other end of the brake strap is in rotary connection with a telescopic structure, the lower end of the telescopic structure is in rotary connection with a connecting rod, the connecting rod is in rotary connection with the brake support, a first hydraulic cylinder is arranged on the brake support, the end of a piston rod of the first hydraulic cylinder penetrates through the brake support to be hinged to the connecting rod, a stopping block which is perpendicular to the piston rod is arranged on the piston rod of the first hydraulic cylinder, a spring is arranged between the stopping block and the bottom of the first hydraulic cylinder, the upper surface of the other end of the connecting rod is a plane, a first through hole is formed in the position, above the plane, of the brake support, a fixed block is fixedly arranged above the first through hole, a third threaded hole is formed in the fixed block and a second screw is arranged in the third threaded mode. The brake structure of the deepwater winch can avoid the problems that due to the conditions such as power failures, the brake strap cannot brake tightly, and accordingly the main winding drum rotates freely to cause danger.