As we all know, the operating environment of the escalator is generally harsh, so the wear of O-ring motorcycle chains will seriously affect the service life, and lubrication and maintenance are very necessary.

1. Wear life of the transmission chain.

The O-ring motorcycle chains in the escalator chain drive device are low-speed and heavy-duty transmission chains, and the driving force acts on the sprocket and chain. Because in the process of sprocket rotation, the chain is constantly engaged and detached from the sprocket, there will be friction between them. In the long-term operation of the escalator, friction will lead to energy loss, wear and tear of O-ring motorcycle chains and other adverse results, resulting in increased sprocket pitch and elongation of O-ring motorcycle chains. So the O-ring motorcycle chains move with a diameter greater than the pitch circle diameter instead of the pitch circle diameter.

In this way, the O-ring motorcycle chains will "climb" on the sprocket, resulting in increased vibration and noise. Especially when the working condition is not good, the lubrication is poor, and the specific pressure of the chain hinge is too high, it will aggravate the wear of the O-ring motorcycle chains hinge and shorten the service life.

2. Lubrication and maintenance of transmission chain.

From the calculation of chain wear life, it can be seen that in the long-term operation of the escalator, the lubrication and maintenance of the chain is particularly important. Good lubrication and maintenance of the chain can improve the performance of the escalator, improve passenger comfort, reduce operating noise, and reduce the maintenance cost of the escalator.

At present, the lubricating oil of the escalator is mineral lubricating oil and synthetic lubricating oil. Lubricating oil can reduce the friction between the chain and the gear, reduce wear, improve work efficiency, and extend the service life of the long-term operation of the escalator. At the same time, it also plays the role of cooling, buffering, force transfer, electrical insulation and anti-corrosion.

Lubricating oil should be added and replaced regularly during use. Due to the influence of shearing, stirring, metal catalysis, friction heat and other factors, as well as external dust, impurities, oxygen and water vapor in the air, the lubricating oil will occur oxidation, deterioration, depolymerization, aging and other phenomena. Caprylic acid, gum, asphalt and other products will make the color of the lubricating oil darker, change its viscosity or consistency, increase its acid value and corrosion, and extend the service life of the chain.

At present, there are two ways to lubricate escalator chains:

The first is the automatic lubrication system. According to the harsh working environment, the system automatically adds lubricating oil to the ladder chain, the main transmission chain, and the handrail transmission chain in the program, and regularly changes the lubricating oil.

Two, manually add lubricating oil. Maintenance personnel use a brush or oil gun to add oil once a month. However, if the lubricating oil is not added and replaced in time, the chain teeth are easy to wear, and the utilization rate of lubricating oil is poor.

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