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US 10,947,088 B2Granted
Elevator vibration damping device
AssigneeOtis Elevator Company
InventorAntoine Adrian Blanchard
Life of this patent
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Abstract
An elevator system includes a stationary structure, a first sheave rotationally supported by the structure, a rope supported by the first sheave, and an elevator car supported by the rope. A vibration damping device of the elevator system is positioned at a first termination of the rope, and is configured to reduce vibration waves in the rope, thereby reducing noise in the elevator car.
Claims19
An elevator vibration damping device constructed and arranged to mount to a termination of a rope, the device comprising:
- an electronic controller;
- an accelerometer configured to sense vibration waves and send a vibration signal to the electronic controller;
- and
- an actuator configured to receive a damping command from the electronic controller and transmit energy into the termination, wherein the vibration waves include lateral vibration waves and the actuator is constructed and arranged to reduce lateral vibration waves in the rope.
1 more element
An elevator system comprising:
- a stationary structure;
- a first sheave rotationally supported by the structure;
- a rope supported by the first sheave and including a first termination;
- an elevator car supported by the rope;
- and
- a first vibration damping device configured to inject energy into the rope for reducing vibration waves, wherein the vibration waves include lateral vibration waves and the actuator is constructed and arranged to reduce lateral vibration waves in the rope.
3 more elements
A method of reducing noise in an elevator car of an elevator system comprising:
- sensing vibration waves at a termination of an elevator rope by an accelerometer;
- and
- injecting energy into the termination by an actuator to cancel out at least a portion of the sensed vibration waves, wherein the vibration waves include lateral vibration waves and the actuator is constructed and arranged to reduce lateral vibration waves in the rope.
Dependencies are inferred from the claim text.