Escalators can transfer more people up shorter distances. It wouldn't make much sense to have an escalator based at the bottom of the Sears Tower go up 100 stories.
Extra room is always figured into original building plans.
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www.Galilmc.comYou need enough room for the drive gear and electric motor at the top of where the escalator will be placed, and a return wheel gear at the bottom. Escalator steps usually aren't less than 3 feet wide.
The electric motor moves the drive gear, which in turns moves the rest of the machine. A belt from the motor to the drive gear is of upmost importance. Without the belt, nothing else would work.
Two belt rails must be looped around both the drive gear and the return gear. They must be able to hold all the steps. It works like a train. The steps are placed on the rails and follow them around from top to bottom. A chain is put through the steps to help guide them along the rails.
Rails must be placed so that the steps will remain level for passengers. This can be done by using triangle shaped steps. At the bottom and top of the escalator ,the rails must be placed so the steps level off to make it easier for the passenger to enter and exit the escalator.
All escalators must have a handrail for safety, which can be installed easily. It uses the same drive gear as the escalator itself, so the handrail and steps travel at the same speed.
You will need a handrail drive. A belt needs to be looped from the handrail drive to the gear drive. Another belt will go along the handrail drive. This is the actual handrail. They need to be large enough for a passenger to grip the entire way up.
The handrail also needs to be along a track parallel with the steps. It's usually put on a wall next to the steps, high enough so that passengers are comfortable holding on to it.
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play gta vice city and enjoy. Forget about escalators.
Look at your bicycle. As the pedal turns, the chain appearing over the rear cog wheelmoves forward and upwards over the pedal cog, returning by travelling back underneath. Exactly how an escalator works.
The simplest thing to do is to make accordian pleats in the paper first. Now cut the "escalator" to the right scale(size) and make two thin kidney bean shapes for the hand rails. Make little tabs on the "up" "stairs" to glue the "escalator" to the kidney bean shape. Glue the stairs to the rails and let them dry. Stand the escalator upright and get a small stick to hold it under one of the stairs. Get play dough blobs to anchor the stick to the model and the stairs.
how to make working model of industries
See images of schematics at link below. They are very complex, and unless you are an engineer with the need to produce an actual accurate working model, this may be more of a project than you want to take on. And if you are an engineer, you would not ask here for instructions. Maybe your best bet, depending on your need, is just to make a model with a moving rubber strip, marked in such a way as to suggest steps.
There are a few ways to make an English working model. The exact model details depend on the type of English working model you want.
There are so many ways that you can make a working model on sound. One way to create a working model is to sing.
working model on Articles
working model of nervous system
Working model for what, exactly?
u make your working model of area of circle with your use of brain
you can make a bulb working.......................