Patent ID: 11970377
Assignee: T-MAX (HANGZHOU) TECHNOLOGY, CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 7:
8. A winch comprising:
a rope drum configured to wind a traction rope on an outer periphery of the rope drum;
a brake device arranged in the rope drum, the brake device comprising a brake sleeve, a torsion spring, a sealing member and a braking assembly, the torsion spring being fitted over the braking assembly, the brake sleeve being fitted over the torsion spring, the braking assembly being configured to drive the torsion spring to move between an expanded position and a retracted position, so as to lock and release the brake sleeve, and the sealing member being arranged between the brake sleeve and the braking assembly, so that a sealing cavity is defined between the brake sleeve and the braking assembly,
wherein the winch further comprises an elastic ring fitted over the brake sleeve and configured to abut with the rope drum,
wherein two elastic rings are provided, and the two elastic rings are spaced apart from each other along an axial direction of the brake sleeve,
wherein the brake sleeve has a first mounting portion where the brake sleeve is configured to be fixed with the rope drum, and the two elastic rings are arranged on both sides of the first mounting portion, respectively.