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Service Information
Elevators, or lifts, carry passengers and freight up and down; escalators are moving staircases from one story of a building to the next; and moving sidewalks carry people horizontally or at a slight incline.
How an Escalator Works. An escalator is made up of a set of interlocking steps, powered by an electric motor. A pair of chains looped around two pairs of gears rotate to move the steps along while a larger metal structure called a truss encases the entire mechanism to connect the floors.
Elevators work via a pulley-esque system whereby a metal rope connects to the top of the elevator car that travels through a “sheave” in the engine room, according to Discovery. Thus, the sheave acts as a pulley wheel featuring grooves to hold onto the metal rope (also known as a cable) securely.
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