How Escalator Works? Working Principal of Escalator Explained with 3D Animation

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00:00The person who invented the escalator was really smart. The principle of how it works is actually

00:06very simple. But before that, let me explain a little knowledge that has been misunderstood.

00:12You must have always thought that the row of brushes on the side of the escalator is used

00:16to clean shoes. But its name is actually an apron board. Its function is not to clean shoes,

00:22but to prevent shoes from getting caught in the gap of several millimeters on the edge of the

00:27escalator. If passengers accidentally touch it, it can easily cause a safety accident.

00:33For safety reasons, the escalator must be equipped with an apron board to act as a housing device.

00:38So we have it. Let's break down the escalator and take a look. There are yellow lines on the

00:44edges of each step, mainly to remind passengers not to stand too close to the edge. It is easy

00:50to maintain the level of each step even when walking down. There are four paired wheels

00:56under each step. The two wheels above are connected to a moving chain, and they will

01:01go down along the fixed track. There is also a guide rail at the bottom to adjust the angle.

01:07If it is too high, the step will not remain level, so the angles here are strictly designed.

01:13When the escalator reaches the bottom, it will reverse and continue to go upwards.

01:18These chains form a loop. These chains are pulled by a drive gear located at the top of

01:23the escalator. A motor at the top powers the rotation of the drive gear. Next to the large

01:29gear is a small gear that powers the handrail located above the step. Viewed from the inside,

01:35the large gear behind is bound by a chain so that the handrail can achieve the same speed as the

01:40step. The outermost layer of the escalator is also wrapped with a strong metal frame,

01:47which is called a cross frame. At the top and bottom of the escalator, there are what we call

01:53combs. They all have their own concave and convex surfaces to fit together.

01:58The function of these grooves is to ensure that items will not get stuck on the steps.

02:04However, slender objects like shoelaces are very easy to get rolled in, so when standing on the

02:10escalator, students still need to pay attention to one more thing here. In fact, escalators are

02:17not only straight but also have curved escalators like this. But so far, I have not seen this kind

02:23of escalator with my own eyes. Hope you enjoy this video. Like, comment, share and follow Faux

02:30more interesting 3D animation videos.

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