Dear sir,
I want to make a working model of an escalator. Kindly help me to complete the project.

With Regards,
THANGAMANI.V.V
sjengineeringtup[at]yahoo.com
9942731069,
8608372219,
VALAYAPALAYAM,
KUNNATHUR
TIRUPUR-641 666.

how to make escalator working model for science exhibition

Find a Place for the Escalator.
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.

You 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.

Putting it All Together
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.

The Handrail
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.

The core of an escalator is a pair of chains, looped around two pairs of gears. An electric motor turns the drive gears at the top, which rotate th­e chain loops. A typical escalator uses a 100 horsepower motor to rotate the gears. The motor and chain system are housed inside the truss, a metal structure extending between two floors.
Instead of moving a flat surface, as in a conveyer belt, the chain loops move a series of steps. The coolest thing about an escalator is the way these steps move. As the chains move, the steps always stay level. At the top and bottom of the escalator, the steps collapse on each other, creating a flat platform. This makes it easier to get on and off the escalator. In the diagram below, you can see how the escalator does all of this.

Each step in the escalator has two sets of wheels, which roll along two separate tracks. The upper set (the wheels near the top of the step) are connected to the rotating chains, and so are pulled by the drive gear at the top of the escalator. The other set of wheels simply glides along its track, following behind the first set.
The tracks are spaced apart in such a way that each step will always remain level. At the top and bottom of the escalator, the tracks level off to a horizontal position, flattening the stairway. Each step has a series of grooves in it, so it will fit together with the steps behind it and in front of it during this flattening.
In addition to rotating the main chain loops, the electric motor in an escalator also moves the handrails. A handrail is simply a rubber conveyer belt that is looped around a series of wheels. This belt is precisely configured so that it moves at exactly the same speed as the steps, to give riders some stability.
The escalator system isn't nearly as good as an elevator at lifting people dozens of stories, but it is much better at moving people a short distance. This is because of the escalator's high loading rate. Once an elevator is filled up, you have to wait for it to reach its floor and return before anybody else can get on. On an escalator, as soon as you load one person on, there's space for another.
To learn more about escalators, check out the links on the next page.
STEP SPEED
Escalator speeds vary from about 90 feet per minute to 180 feet per minute (27 to 55 meters per minute). An escalator moving 145 feet (44 m) per minute can carry more than 10,000 people an hour -- many more people than a standard elevator.

Sir please send us how to make a working model of escalator
With regards
Mohammed afsal n.s
Poopy4yousullia[at]gmail.com
9741489359
8722401359
Sunnemole
Kanakamajalu post
Sullia taluk
Dk.
Karnataka