III – Introduction
An escalator is a conveyor transport device to transport people and it’s consisting of a staircase whose steps move up or down on tracks which keep them horizontal. Most escalators also have moving handrails which approximately keep pace with the movement of the steps. The direction of movement up or down can be permanently the same, or be controlled by personnel according to the time of day, or automatically be controlled. Someone at the bottom or at the top of course the system is programmed such that the direction is not reversed while somebody is on the escalator.
A spiral escalator is a mechanized moving stairway, common in places with a lot of foot traffic or where a conventional staircase would be very long and tiring to climb. Spiral escalators can often be seen in shopping malls, museums, multi-story parking garages, and subway stations.
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History of an escalator
“Charles Seeberger developed the escalator and installed the first one as an amusement ride at Coney Island, New York in 1897. In the London used to have wooden steps, but this was changed after the Kings Cross fire at kings Cross St Pancreas tube station in 1987.” "The First Moving Staircase in England," “from (www.howstuffworks.com) “
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Problem definition
To Design a heavy duty spiral escalator and to be used in Saudi Arabic. And to be between two floor of height of 5 meters.
Scope of Project
Our project is limited to designing a spiral escalator that is challenging. One of our challenges in this project is how to design a staircase step and how to make a smooth relationship between a step and it’s here bath. Its components will be so designed so that it can be easily manufactured in KSA. And to find a mechanism of a stairs.