Escalator English

The escalator consists of a chain conveyor with special structure and two belt conveyors with special structure. It is a fixed electric drive device with a circulating ladder, which is used to transport passengers up and down on different floors of the building. A continuous conveying machine that carries people up and down.

Escalator is a fixed electric drive device with circulating steps, which is used to transport passengers obliquely upwards or downwards. The escalator consists of a ladder (improved plate conveyor) and two handrails (improved belt conveyor).

Its main components are steps, traction chain and sprocket, guide rail system, main transmission system (including motor, reducer, brake and intermediate transmission link, etc.). ), driving spindle, ladder tensioner, handrail system, comb plate, escalator skeleton and electrical system.

Steps move horizontally at the passenger entrance (convenient for passengers to climb stairs), and then gradually form steps; Near the exit, the steps gradually disappear and move horizontally again. These movements are realized by the main wheel and auxiliary wheel of the step walking along different step guide rails respectively.

Extended data

Working principle of escalator: The core components of escalator are two chains, which move in a circle around two pairs of gears. At the top of the escalator, the motor drives the transmission gear to rotate the chain ring. A typical escalator uses a 100 horsepower engine to turn gears. Both the engine and the chain system are installed in a truss, which refers to a metal structure extending between two floors.

Unlike the conveyor belt moving plane, the chain link moves a set of steps. The most interesting thing about escalators is the way these steps move. When the chain moves, the steps are always horizontal. At the top and bottom of the escalator, the steps are folded to form a platform. This makes it easier to get up and down the escalator.

Each step on the escalator has two sets of wheels, which rotate along two independent tracks. The upper device (wheels near the top of the steps) is connected to the rotating chain and pulled by the driving gear located at the top of the escalator. The wheels of the other groups just slide along the track and follow the wheels of the first group.

The two tracks are separated from each other, so that each step can be kept horizontal. At the top and bottom of the escalator, the track is in a horizontal position, thus flattening the steps. In the flattening process, there are a series of grooves in each step to connect the previous and subsequent steps. Besides rotating the main link, the motor in the escalator can also move the handrail.