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UNIVERSITY OF HONG KONG Department of Electrical & Electronic Engineering
MEBS6000 2010 Utilities Services
Brief introduction to escalator and travellator
Escalator
Escalators are moving staircases. They consist essentially of pivoted steps linked to
each other and pulled along by an endless chain. The steps have guide pins which
move in tracks on either side of the tread arranged so that the steps come out of the
concealed section horizontally, are then pivoted into the shape of a staircase and
finally return to the horizontal before returning back into the concealed section. The
steps complete their circuit within the concealed section, and on this part of their
travel they are flat.
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(Adopted from CIBSE Guide D)
Drive sprocket arrangement
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(Adopted from The Vertical Transportation Handbook, 3rd edition by George R.
Strakosch)
(Adopted from CIBSE Guide D)
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[Source: http://www.uoregon.edu/~hof/w07caught/arch491/appendix.html]