Elevator car dynamic sag damping system
AssigneeOtis Elevator Company
InventorsRandall S. Dube, Patricia Derwinski
Life of this patent
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Abstract
A damping device for damping movement of a parked car in an elevator system includes a base plate and at least one damping assembly connected to the base plate. The damping assembly includes a flange extending from the base plate, a support member arranged at a distance from the flange, and at least one damping mechanism having a first end connected to the flange and a second end connected to the support member. The at least one damping assembly restricts movement of the support member toward the flange.
Claims16
A damping device for damping oscillation of a parked car in an elevator system, the damping device comprising:
- a base plate;
- and
- at least one damping assembly connected to the base plate, the at least one damping assembly including a first damping assembly and a second damping assembly separated by a clearance configured to receive a coupling component of the parked car, the at least one damping assembly including:
- a flange extending from the base plate;
- a support member arranged at a distance from the flange;
- and
- at least one damping mechanism having a first end connected to the flange and a second end connected to the support member, wherein the at least one damping mechanism restricts oscillation of the support member toward the flange.
An elevator system comprising:
- an elevator car;
- a plurality of load bearing members suspending the elevator car for oscillation between a plurality of parked positions;
- a coupling component;
- and
- a damping device engagable with the coupling component at one of the plurality of parked positions, wherein one of the coupling component and the damping device is mounted to the elevator car, the damping device having at least one damping assembly including:
- a flange;
- a support member arranged at a distance from the flange;
- and
- at least one damping mechanism having a first end connected to the flange and a second end connected to the support member, wherein the at least one damping assembly restricts oscillation of the elevator car in at least a first direction;
- wherein when the coupling component and the damping device are engaged, the coupling component is arranged in contact with the support member.
A method of controlling a position of an elevator car comprising:
- stopping the elevator car in a desired position;
- engaging a coupling component and a damping device located at the desired position, wherein engaging the coupling component and the damping device includes receiving the coupling component within a clearance defined between a first damping assembly and a second damping assembly;
- initially deflecting at least one of the first damping assembly and the second damping assembly;
- and
- further deflecting the at least one of the first damping assembly and the second damping assembly in response to oscillation of the elevator car at the desired position.
Dependencies are inferred from the claim text.