Brake mechanism

Abstract

The invention relates to a brake mechanism. The brake mechanism comprises a reduction gearbox shell and a brake assembly, a brake sleeve is arranged in the reduction gearbox shell, a clamping ring groove is formed in the brake sleeve, the brake assembly is arranged in the brake sleeve, the brake assembly is composed of an outer drive plate, an inner drive plate and a torsion spring, a sun gear is fixed to the outer side of the outer drive plate, a hexagonal main shaft of a motor penetrates through the sun gear and the outer drive plate to be connected to the inner drive plate in an inserted mode, meanwhile opposite drive lugs are fixed to the opposite sides of the outer drive plate and the inner drive plate, the two ends of the torsion spring are fixed to the drive lugs of the outer drive plate and the inner drive plate, and a clamping ring is used for fixing the brake assembly. Due to the fact that the brake assembly of the brake mechanism is arranged in the reduction gearbox shell on the outer side of a speed reducing mechanism, high temperature generated during braking does not have to worry about being transmitted to a winding drum, a winch is safer when dragging a heavy object, the whole structure is simple, during repairing, only a bolt at the opening end of the reduction gearbox shell needs to be unscrewed, after the reduction gearbox shell is taken down, the clamping ring at the opening end of the brake sleeve is taken down, and disassembly and assembly are convenient.

Description

technical field [0001] The invention relates to an electric winch accessory, in particular to a brake mechanism of the electric winch. Background technique [0002] Electric winches are widely used on off-road vehicles to tow vehicles or heavy objects. The existing electric winches are generally composed of a motor, a reel, a gearbox and a brake mechanism. Disc, torsion spring, inner dial and brake sleeve, the brake is set in the drum on one side of the motor, and the outer wall of the brake sleeve is set close to the inner wall of the drum, and there are bolt holes on both the drum and the brake sleeve The brake sleeve and the reel are fixed by bolts passing through the bolt holes of the reel and the bolt holes of the brake sleeve. The dial drives the inner dial to rotate, so that the two ends of the torsion spring connected to the left inner dial are contracted, and the torsion spring rotates smoothly in the brake sleeve, so that the hexagonal hole in the center of the in...

AI Technical Summary

Problems solved by technology

In the torsion spring brake mechanism of the existing winch, the brake sleeve is tightly fixed in the reel, and the high temperature generated by the friction between the brake sleeve and the torsion spring is quickly transmitted to the reel during braking, so it is easy to fuse the nylon pull rope on the reel and cause damage to the reel. There is danger, and if there is a problem with the braking mechanism of this winch and it needs to be repaired, it is very inconvenient to disassemble. In addition, the motor output shaft of this winch braking mechanism needs to be connected with the outer dial to be connected through the motor connection sleeve, while the inner The dial needs to be connected with the sun gear of the reduction box through the hexagonal output shaft, and its structure is relatively complicated

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