B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
198/4
B66B 23/04 (2006.01)
Patent
CA 1067442
DRIVING MECHANISM FOR DRIVING MOVING HANDRAIL Abstract of the Disclosure The specification discloses a driving mechanism for driving a moving handrail of an escalator and the like. The driving mechanism includes driving rollers and guiding rollers which are disposed to confront with each other with the moving handrail interposed therebetween. The driving rollers are secured to a movable plate, while the guiding rollers are attached to fixed plates. The movable plate is adapted to be moved in the direction perpendicular to the moving handrail, while the fixed plates are firmly secured to a part of a truss frame which supports the escalator. The movable plate carries a sprocket by means of which the driving rollers are rotated to drive the moving handrail. The sprocket itself is adapted to be driven by a chain or the like going therearound. The vertical component of the tensile force residing in the chain acts to press the driving rollers onto the moving handrail to increase the frictional force between the driving rollers and the handrail. In this way, a sufficient frictional force can be obtained when the escalator is in use, but pressure on the handrail from the driving rollers is reduced when the escalator is not in operation, thus reducing the liklihood of indentations being formed in the handrail.
288641
Kubota Masayuki
Sato Yoshihiko
Hitachi Ltd.
Na
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