Safety arrangements for elevators and methods for monitoring safety of elevator systems
AssigneeKone Corporation
InventorsSeppo Ketoviita, Juha Panula
Life of this patent
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Abstract
A safety arrangement of an elevator includes a mechanical safety device (3, 4, 11) that ensures the safety of the elevator hoistway (2) and that can be moved into a use position (2), and which safety arrangement of an elevator includes a detector (5) of intrusion into the elevator hoistway, which detector is fitted to receive measuring data (6) from the sensors (7) that determine the status of the entrances (9, 10) of the elevator hoistway, and also to determine intrusion into the elevator hoistway (2) from the measuring data received, and after verifying an intrusion to switch into an operating mode (8) in which driving with the elevator is prevented.
Claims18
A safety arrangement of an elevator, which comprises a mechanical safety device that ensures the safety of the elevator hoistway and can be moved into a use position, and which safety arrangement of an elevator comprises a detector of intrusion into the elevator hoistway, which detector is fitted to receive measuring data from the sensors that measure the status of the entrances of the elevator hoistway, and also to determine intrusion into the elevator hoistway from the measuring data received, and after determining an intrusion to switch the safety arrangement of the elevator into an operating mode in which driving with the elevator is prevented,
- wherein the aforementioned detector of intrusion into the elevator hoistway is fitted to determine on the basis of the measuring data received the area of intrusion from where intrusion into the elevator hoistway has occurred,
- and in that the detector of intrusion into the elevator hoistway is fitted to delimit a safe area of the elevator hoistway corresponding to the determined area of intrusion,
- and in that the safety arrangement of the elevator is fitted to permit service drive after the mechanical safety device that is disposed in the safe area delimited by the detector of intrusion into the elevator hoistway and that ensures the safety of the elevator hoistway is moved into the use position.
A method for monitoring safety in an elevator system, the method comprising:
- fitting a mechanical safety device that ensures the safety of the elevator hoistway and that can be moved into a use position into the elevator hoistway;
- measuring the status of the entrances of the elevator hoistway;
- determining intrusion into the elevator hoistway from the measured the status of the entrances of the elevator hoistway;
- preventing driving with the elevator if intrusion into the elevator hoistway is determined;
- determining an area of intrusion, from where intrusion into the elevator hoistway has occurred, from the measured status of the entrances of the elevator hoistway;
- delimiting the safe area of the elevator hoistway corresponding to the determined area of intrusion;
- and
- permitting service drive after the mechanical safety device that is disposed in the delimited safe area and that ensures the safety of the elevator hoistway is moved into the use position.
Dependencies are inferred from the claim text.