Main rack for loop chain chain block

Abstract

The invention discloses a main rack for a loop chain chain block, and belongs to the technical field of loop chain chain blocks. The main rack for the loop chain chain block comprises a driving side rack part, a speed reducing side rack part and a middle connecting part integrally connecting the driving side rack part and the speed reduction side rack part, and an arc-shaped chain guide groove is formed in the inner wall of the upper area of the middle connecting part; a chain inlet cross hole and a chain outlet cross hole are formed between the bottom area of the middle connecting part and one end of the arc-shaped chain guide groove and between the bottom area of the middle connecting part and the other end of the arc-shaped chain guide groove respectively, and the chain inlet cross hole and the chain outlet cross hole are formed, so that a protruding block part for blocking a chain is formed at the bottom, located between the chain inlet cross hole and the chain outlet cross hole, of the middle connecting part; and a cavity for installing a brake mechanism is formed in the outer side of the driving side rack part, and a cavity for installing a gear speed reducing mechanism is formed in the outer side of the speed reducing side rack part. By the adoption of the technical scheme, the main rack is simple in structure, free of any assembly parts inside and beneficial to winching.

Description

【Technical field】 [0001] The invention relates to a main frame for chain hoists, belonging to the technical field of chain hoists. 【Background technique】 [0002] As we all know, the parts of the known chain hoist are scattered and miscellaneous. For example, the body of the chain hoist in the prior art is mainly composed of the left wall panel 3' and the right wall panel 1', two small guide sprockets 21', a small chain stop block 22' and two support rods. 2' composition. [0003] The left wallboard 3' and the right wallboard 1' are respectively provided with a shaft hole for the small guide wheel for the shaft head of the small guide chain wheel 21' to be movable, and a small stopper for the shaft head of the small chain block 22' to be installed. chain block shaft hole, the support rod shaft hole for the support rod 2' installation, the upper hook shaft hole for the upper hook shaft installation, wherein, [0004] The small guide sprocket 21' is configured separately fr...

AI Technical Summary

Problems solved by technology

[0006] 1. The left wall panel 3' and the right wall panel 1' of the split configuration are connected only by the support rod 2', and the connection strength is poor;

[0007] 2. The lifting chain 41' hanging from the lifting sprocket 4' is located in the space between the two wall panels, and only two small guide sprockets guide the lifting chain into and out of the chain hoist machine. The lifting chain 41' is unconstrained to sway between the two wall panels in the radial direction relative to the lifting sprocket 4', and the actual use process finds that the lifting chain 41' and the lifting sprocket 4' are not reliable in meshing transmission , the hoisting chain 41' is prone to twisting, flipping or even jamming, which affects the smooth hoisting of the hoisting chain 41';

[0008] 3. Due to the separate arrangement of the small guide sprocket 21', the right wall panel 1', and the left wall panel 3', the parts of the small guide sprocket will be skewed and toppled when slightly touched when assembling on the assembly line, and the assembly is time-consuming;

[0009] 4. The split configuration of the small retaining chain block 22', the right wall panel 1', and the left wall panel 3', when assembling the small retaining chain block parts on the assembly line, it will be skewed and toppled when slightly touched, and there is also assembly inefficiency Insufficient, and sometimes the split configuration of the small block chain block 22' will fail, affecting the orderly and smooth detachment of the lifting chain link from the chain pocket of the lifting sprocket 4', resulting in overlapping chains, chain failure

[0010] In short, due to the fact that the existing chain hoist machine is equipped with many small parts, the assembly alignment is time-consuming, the accuracy is low, and the cumulative error is large, resulting in many assembly links in the assembly line and high assembly costs.

Images