Bracelet Drive Mechanism for Drag Chains at Any Angle for Chain Hoists

Abstract

The invention discloses a bracelet driving mechanism for dragging chains at any angle for hand chain hoists. Extend the thin-walled annular boss to form a closing ring on the inner hole wall. The annular boss can be rotatably supported and axially limited in the inner hole of the support. The support is fixed on the outer surface of a wallboard. Connect the long shaft, the outer end cover is fixed on the outer end surface of the adapter, the bracelet wheel is accommodated between the cavity of the outer end cover and the closing ring, the adapter and the outer end cover cover the bracelet wheel, and the adapter also covers the brake, The lower part of the outer end surface of the adapter piece and the lower part of the inner end surface of the outer end cover are aligned with the guide holes for the incoming and outgoing chains, and the upper outer end surface of the adapter piece is aligned with the arc-shaped chain guide grooves set on the inner end surface of the outer end cover. Open chain ditch. The invention prevents foreign matter from entering into the hand chain wheel and the brake, and when the chain is dragged at different angles, the chain in and out is always along the direction of the chain, and the chain guide is good.

Description

【Technical field】 [0001] The invention relates to a bracelet driving mechanism for chain hoists at any angle, and belongs to the technical field of chain hoists. 【Background technique】 [0002] In the existing chain hoist, the bracelet wheel cover of the bracelet drive mechanism is a single, integral stamped thin-walled metal part, which is either clamped on the outer edge of the bracelet wheel, or directly rigidly fixed on the support rod, And the hand chain wheel is covered, and the hand chain wheel cover only has holes for entering and exiting the chain. Due to the fact that the hand chain wheel is basically exposed in the former structure, dust and hard foreign matter can easily invade the hand chain wheel and hand chain, thereby affecting the normal rotation performance of the hand chain wheel, so it is difficult to work under complex and harsh conditions; the latter In this structure, because the hand chain wheel is fixed, the operator can only stand near the suspende...

AI Technical Summary

Problems solved by technology

Due to the fact that the hand chain wheel is basically exposed in the former structure, dust and hard foreign matter can easily invade the hand chain wheel and hand chain, thereby affecting the normal rotation performance of the hand chain wheel, so it is difficult to work under complex and harsh conditions; the latter In this structure, because the hand chain wheel is fixed, the operator can only stand near the suspended load and pull the hand chain in the sagging direction. It will bump the inner wall of the bracelet wheel case due to the interference of the bracelet wheel case. Because the guide chain is not smooth, it will not only increase the manpower consumption, but also make the noise harsh.

Images