Bush roller chain

Abstract

The invention discloses a bush roller chain which comprises inner chain plates, outer chain plates, bushes, hinge pins and first rollers, wherein the bushes are provided with extension sections which extend outside the outer side surfaces of the inner chain plates at two sides; diameter expansion hole sections are formed in inner side ends of hinge pin holes for fixedly connecting the hinge pins on the outer chain plates; the diameter expansion hole sections and the corresponding extension sections of the bushes are in rotational connection. Preferably, the outer chain plates consist of first outer chain plates and second outer chain plates; the first outer chain plates are positioned on the outer sides of the second outer chain plates; the small hole sections, matched with the hinge pins, of the hinge pin holes are arranged on the first outer chain plates in a straight through hole structure manner; the diameter expansion hole sections are also of the straight through hole structure and are arranged on the second outer chain plates; the thickness of each second outer chain plate is equal to the length of each upper bush extension section. The bush roller chain has the beneficial effects that through redistribution of power transmission of inner and outer chain plates, the connection abrasion of the chain is alleviated, the loading capacity of the bush roller chain is remarkably improved, the service life of the bush roller chain is prolonged, and the use cost is lowered.

Description

technical field [0001] The invention relates to a chain transmission component, in particular to a bush roller chain for power transmission. Background technique [0002] The sleeve roller chain consists of inner chain plate, outer chain plate, bushing, pin shaft and rollers in single or multiple rows. The outer chain plate is fixed on the pin shaft, the inner chain plate is fixed on the sleeve, and the rollers and A coaxial rotatable connection structure is formed between the sleeves and between the sleeve and the pin shaft. The meshing between the chain and the sprocket is mainly rolling friction, so the sleeve roller chain is light in weight, long in life and low in cost. It is widely used. For example, existing motorcycles and bicycles usually use the chain and sprocket of the single-row sleeve roller chain for power transmission. The failure forms of chain transmission mainly include chain plate fatigue damage; impact fatigue damage of rollers and sleeves, gluing of pi...

AI Technical Summary

Problems solved by technology

Under repeated impacts, after a certain number of cycles, the rollers and sleeves may be damaged by impact fatigue; and wear is an inevitable phenomenon of mechanical transmission. In open transmission, poor environmental conditions and poor lubrication, the chain hinge After wear and tear, the chain link becomes longer, which can easily cause tooth jumping or chain detachment, thus drastically reducing the service life of the chain

The chain transmission of motorcycles is a typical open transmission, and there are harsh environmental conditions and poor lubrication. Therefore, the failure mode is mainly manifested in the wear of chain links and the impact fatigue damage of rollers and sleeves.

When riding on uphill and rough roads, these failure modes are comprehensively manifested as chain breakage, which is likely to cause the motorcycle to slide or topple over, bringing safety hazards to the rider

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