Lubrication improved step chain

Abstract

The invention primarily discloses a lubrication improved step chain. The technical scheme of the invention is as follows: the lubrication improved step chain comprises a plurality of hinges. Each hinge comprises a pair of inner chain plates, a pair of outer chain plates, a bushing, a pin roll and a roller. The inner chain plates are in interference fit connection to the bushing, the outer chain plates are in interference fit connection to the pin roll, the bushing is in clearance fit to the roller, oil holes are formed in two sides in the bushing, grooves are formed in two end surfaces of thebushing, first side gaps are formed between the inner chain plates and the outer chain plates, second side gaps are formed between the inner chain plates and the roller, a first side gap is formed between the pin roll and the bushing, a second gap is formed between the bushing and the roller, a first oil path is formed among the first side gaps, the grooves and the first gap successively, a secondoil path is formed among the second side gaps, the second gap, the oil holes and the first gap successively, oil storage tanks are arranged on two sides of the pin roll, and oil enters the oil storage tanks of the pin roll through the first oil path and the second oil path separately. The lubrication improved step chain provided by the invention has the effect of improving lubrication of kinematic pairs of the hinges, so that wear is reduced and the service life is prolonged.

Description

technical field [0001] The invention relates to a step chain for an escalator or a moving walk, in particular to a step chain with improved lubrication. Background technique [0002] At present, step chains are widely used in escalators for transmission, lifting and conveying. In the escalator system, the step chain is a key component, not only to ensure the safety of passengers during the operation of the escalator, but also to ensure the comfort of the passengers during the operation of the escalator, and to ensure the service life of the step chain. In the prior art, the main failure mode of the step chain is wear and elongation, and the main cause of wear and elongation is insufficient and effective lubrication of the hinge motion pair between the sleeve and the pin shaft of the step chain, which aggravates the wear. [0003] In the prior art, Chinese Patent No.: CN201120556078.3 proposes a sealed oil-free chain. The hinge forms a sealed space, which can prevent foreign...

AI Technical Summary

Problems solved by technology

In the prior art, the main failure mode of the step chain is wear and elongation, and the main reason for the wear and elongation is that the hinge motion pair between the sleeve and the pin shaft of the step chain is not sufficiently lubricated and the wear is aggravated.

[0003] In the prior art, Chinese patent number: CN201120556078.3 proposes a sealed oil-free chain, the hinge forms a sealed space, which can prevent foreign matter from entering and ensure sufficient and long-term lubrication, but it is not recognized by the market due to high manufacturing costs

Chinese Patent No.: CN201220706779.5 proposes a stepped chain with an oil filling cup. The inside of the hinge is designed with the structure of the oil filling cup to form a grease lubricating oil path, which reduces wear and improves life. High maintenance cost

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