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

Claim 0:
1. A brake device for a winch, 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 sealing member comprises a first sealing sleeve and a second sealing sleeve, the first sealing sleeve and the second sealing sleeve are fitted over the braking assembly, and an outer peripheral wall of the first sealing sleeve and an outer peripheral wall of the second sealing sleeve abut with an inner wall of the brake sleeve, and
wherein the sealing member further comprises at least one of:
a first sealing ring fitted over the first sealing sleeve, wherein an inner wall of the first sealing ring abuts with the outer peripheral wall of the first sealing sleeve, and an outer wall of the first sealing ring abuts with the inner wall of the brake sleeve;
a second sealing ring fitted over the second sealing sleeve, wherein an inner wall of the second sealing ring abuts with the outer peripheral wall of the second sealing sleeve, and an outer wall of the second sealing ring abuts with the inner wall of the brake sleeve; and
a third sealing ring fitted over the braking assembly, wherein an inner wall of the third sealing ring abuts with the braking assembly, and an outer wall of the third sealing ring abuts with an inner wall of the second sealing sleeve.