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An escalator is a moving staircase conveyor transport device for carrying people between floors of a building.
The device consists of a motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step treads to remain horizontal.
Escalators are used around the world to move pedestrian traffic in places where elevators would be impractical.
Principal areas of usage include department stores, shopping malls, airports, transit systems, convention centers, hotels, and public buildings. The benefits of escalators are many.
They have the capacity to move large numbers of people, and they can be placed in the same physical space as one might install a staircase.
They have no waiting interval (except during very heavy traffic), they can be used to guide people toward main exits or special exhibits, and they may be weatherproofed for outdoor use.
Escalators are one of the largest, most expensive machines people use on a regular basis, but they're also one of the simplest.
At its most basic level, an escalator is just a simple variation on the conveyer belt. A pair of rotating chain loops pull a series of stairs in a constant cycle, moving a lot of people a short distance at a good speed.
In this article, we'll look inside an escalator to find out exactly how these elements fit together. While it is exceedingly simple, the system that keeps all the steps moving in perfect synchrony is really quite brilliant.
An escalator is a mechanized moving stairway, common in places with a lot of foot traffic or where a conventional staircase would be very long and tiring to climb.
Escalators can often be seen in shopping malls, museums, multi-story parking garages, and subway stations.
For example, Escalators are often installed in pairs, with an up escalator and a down escalator adjacent to each other, while a single escalator may be changed to go up or down according to the direction of heavier traffic at different times of the day.
An escalator is similar to a conveyor belt, but differs in that it is on an incline and has a surface of stairs rather than a flat belt. Most escalators also include a handrail that moves in conjunction with the stairs.
To move from one end of an escalator to the other, a person may simply stand on one step until one reaches the end, or one may climb or descend the escalator like conventional stairs.
Many escalators in busy areas are wide enough to accommodate two columns of people, and those who wish to stand conventionally remain on one side of the escalator.
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