K.F. Chan (Mr.) Eb of 2 Page Eb 1 of 4

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.

K.F. Chan (Mr.) Eb of 2 Page Eb 2 of 4

(Adopted from CIBSE Guide D)

Drive sprocket arrangement

K.F. Chan (Mr.) Eb of 2 Page Eb 3 of 4

(Adopted from The Vertical Transportation Handbook, 3rd edition by George R.

Strakosch)

(Adopted from CIBSE Guide D)

K.F. Chan (Mr.) Eb of 2 Page Eb 4 of 4

[Source: http://www.uoregon.edu/~hof/w07caught/arch491/appendix.html]