Self-lubricating rotation chain for escalator

Abstract

A self-lubricating rotation chain for an escalator is used for connection and guiding for rubber protective belts of the escalator and comprises a plurality of rotation chain link units, wherein eachrotation chain link unit comprises two chain connecting plate groups, chain connecting pins, rollers and self-lubricating plastic sliding bearings; each chain connecting plate group is provided with hinge pin holes; the two chain connecting plate groups of each rotation chain link unit are separately positioned at two ends of the corresponding rollers; each roller is provided with a through hole along an axial direction; each self-lubricating plastic sliding bearing is at least partially positioned in the through hole of the corresponding roller; each chain connecting pin penetrates through the corresponding self-lubricating plastic sliding bearing; and two ends of each chain connecting pin penetrate through the corresponding hinge pin holes and are in rivet connection with the corresponding chain connecting plates. The self-lubricating plastic sliding bearings replace roller bearings, therefore, the defects of failing of the roller bearings due to dust, abrasive dust and the like areavoided, and the service life of the self-lubricating rotation chain for the escalator is prolonged.

Description

technical field [0001] The invention relates to the field of escalators, in particular to a self-lubricating escalator rotary chain. Background technique [0002] An escalator, also known as an escalator, is a means of transportation that transports people in the form of a conveyor belt. Electric escalators are generally inclined. Pedestrians who stand on one end of the escalator step on the self-propelled steps will be automatically taken to the other end of the escalator, and the steps will be kept level all the way. Compared with the elevator, the escalator occupies more space, and the vertical movement speed is relatively very slow, but because the escalator is a continuous operation, unlike the elevator, passengers have to wait for the arrival of the car, so the total passenger capacity of the escalator is high. There are many, so it is more common in places with large traffic such as shopping malls and subways. [0003] Both sides of the escalator are generally provi...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent ZL200980158025.1 discloses a handrail assembly using roller bearings, and a slewing chain using rolling bearings. The friction between the handrail belt and the guide rail will generate a large amount of abrasive debris and dust. After the abrasive debris and dust enter the rolling bearing, the rolling bearing will be stuck or the track will be damaged. If it fails, the escalator running outdoors will rust due to rainwater entering the rolling bearings.

[0005] Chinese patent ZL201020002044.5 discloses a self-lubricating plastic escalator rotary chain, the plastic sliding bearing is fixed, the rollers on both sides drive the pin shaft to rub in the plastic sliding bearing, and the pressure on the chain rollers brought by the handrail is always perpendicular to the chain link direction, causing the pin shaft to always rub against the same side of the plastic sliding bearing, causing wear of the plastic sliding bearing, and the life of the chain is over when the wall thickness of the plastic sliding bearing wears out

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