Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead

Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead

The elevator has a car movable vertically within a shaft between lower and upper end positions and a drive system coupled to a traction system for controlling movement of the car. A limit switch which is open when the car is in a selected distance range from one of the end positions. The limit switc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SIMONOT ALAIN, GOULET DOMINIQUE, PILLIN DAVID, REBILLARD PASCAL, BEEUWSAERT MICHEL, MONZON ANDRES, SIRIGU GERARD, TEGTMEIER DIRK, PICARD FLORENCE, CLOUX JEAN-NOEL, DEL RIO FERNANDO, DUKACZ OLIVIER, HERKEL PETER, FONTENEAU NICOLAS, BEAUCHAUD FREDERIC, COQUERELLE THOMAS
Format: Patent
Sprache:eng
Schlagworte:
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSPORTING
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Beschreibung
Zusammenfassung:The elevator has a car movable vertically within a shaft between lower and upper end positions and a drive system coupled to a traction system for controlling movement of the car. A limit switch which is open when the car is in a selected distance range from one of the end positions. The limit switch forms part of a power line supplying power to the drive system for controlling movement of the car in a direction towards that end position in an inspection operation. Thus movement of the car is prevented only in that direction when the car is in the selected distance range in an inspection operation.