Anti-derailment lower chain wheel structure of TH type hoister

Abstract

The invention discloses an anti-derailment lower chain wheel structure of a TH type hoister, relating to the technical field of hoisters. The anti-derailment lower chain wheel structure comprises a lower chain wheel, wherein the lower chain wheel is arranged on a chain wheel shaft, the two ends of the chain wheel shaft extend out of a shell of the hoister, bearings and bearing seats are respectively mounted at the end parts of the chain wheel shaft, the lower chain wheel is cylindrical, and annular inclined bulge edges are arranged at the edges of the two sides of the lower chain wheel. According to the anti-derailment lower chain wheel structure of the TH type hoister, the lower chain wheel is a cylindrical body and does not have a groove, so that the phenomenon of lower chain wheel derailment does not exist; in addition, a chain does not run in the groove, so that chain over-tightening does not exist, a lower chain wheel lead screw and a sliding plate are saved, and the phenomenon of bearing damage due to poor sealing resulting from sliding plate movement is avoided.

Description

technical field [0001] The invention relates to a lower sprocket structure, in particular to a TH type hoist anti-derailment lower sprocket structure, which belongs to the technical field of hoists. Background technique [0002] The structure of the lower sprocket of the traditional TH series hoist is as shown in the attached drawing of the manual figure 1 As shown, the lower sprocket 1 is provided with a lower sprocket groove 2, and the position where the sprocket shaft protrudes out of the hoist housing 3 is provided with a lead screw adjustment slide plate 5, and the lead screw adjustment slide plate 5 and the hoist housing 3 are passed through a wire. The bar 4 is connected, and the end of the sprocket shaft is provided with a bearing and a tile seat 6. [0003] In the above-mentioned structure, what the hoist adopts is an endless chain, and the chain runs in the lower sprocket groove 2. Due to the influence of the material particles and the tightness of the chain, the ...

AI Technical Summary

Problems solved by technology

[0003] In the above structure, the hoist uses a ring chain, and the chain runs in the lower sprocket groove 2. Due to the influence of material particles and chain tightness, the chain on the lower sprocket 1 is very easy to derail.

In addition, because the chain needs to be pressed against the lower sprocket 1, when digging materials, it will give a reaction force to the lower sprocket 1. Every time the material is dug, the lower sprocket 1 will jump, and the lower sprocket 1 will bring the skateboard every time it jumps. 5 moves, the bearing seal is not good due to the frequent movement of the lead screw adjustment slide plate 5 and the chain, so the bearing is easily damaged

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