Escalator dual solenoid main drive shaft brake

Escalator dual solenoid main drive shaft brake

A main drive shaft brake for a passenger conveyor includes a braking element, an actuator, and a counter-actuator. The actuator is de-energized to release the braking element and halt operation of the passenger conveyor during an abnormal or emergency condition. An energized counter-actuator permits...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SENGER ALOIS
Format: Patent
Sprache:eng
Schlagworte:
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSPORTING
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Beschreibung
Zusammenfassung:A main drive shaft brake for a passenger conveyor includes a braking element, an actuator, and a counter-actuator. The actuator is de-energized to release the braking element and halt operation of the passenger conveyor during an abnormal or emergency condition. An energized counter-actuator permits release of the braking element but, when de-energized, inhibits release of the braking element by the actuator to prevent unintentional release of the braking element caused by, for example, an accidental loss of power to the actuator.