7 points for attention when riding the escalator structure!

Escalators can always walk in one direction, but most of them can be controlled by managers according to the needs of time and people flow. Another kind of pedestrian transportation very similar to escalators is the moving sidewalk. The main difference between the two is that there are no steps on the moving sidewalk; Most people only walk on the flat ground, or lean slightly. Next, I'll introduce you to the related knowledge of escalator structure.

Structure of escalator

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 and driving spindle of main transmission system (including motor, reducer, brake and intermediate transmission link, etc.). ), ladder tensioner, handrail system, comb plate, escalator skeleton and electrical system. After the steps move horizontally at the passenger entrance (convenient for passengers to climb stairs), they gradually form steps; The steps near the entrance gradually disappeared and the steps moved horizontally again. These movements are realized by the main wheel and auxiliary wheel of the step walking along different step guide rails respectively.

Working principle of escalator

The core components of the escalator are two chains, which move in circles 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 with the rotating chain,

And is pulled by a 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. The handrail is just a rubber conveyor belt around a series of wheels. The conveyor belt is precisely configured to move at exactly the same speed as the steps, making passengers feel stable.

The escalator system can't let people climb dozens of floors like elevators, but it is very suitable for providing short-distance transportation. This is because of the high load rate of escalators. After the elevator is full, no one can get on the elevator until they reach the designated floor and return. On the escalator, as long as one person gets to the upper floor, it will make room for others.

7 points for attention when taking the escalator!

1. Make sure your shoelaces are tied before climbing the ladder;

2. Try to stand in the middle of the steps when taking the ladder, and make sure to leave quickly and smoothly after taking the ladder;

3. When taking your child to the escalator, you must hold the child's hand and absolutely forbid the child to play on the escalator;

4. It is forbidden to put children in strollers, walkers or shopping carts to take the stairs;

5. When taking the ladder, pay attention to the front and grab the handrail;

6. When taking the ladder, avoid standing on the side that may be stuck;

In order to prevent unexpected events, we should know where the emergency stop button of the escalator is.