Rope tension monitoring assembly and method
AssigneeOtis Elevator Company
InventorsHugh J. O'Donnell, Thomas J. Hoffman, Frederick H. Barker
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Abstract
An elevator rope tension monitoring assembly is disclosed. The rope tension monitoring system includes a plurality of sensors that produce an output corresponding to the level of tension in each of the ropes. A controller compares the relative levels of sensed tension and generates a warning signal if a sufficient deviation in the relative level of tension in the ropes is observed.
Claims29
A rope monitoring assembly for an elevator system having a car and a plurality of ropes, each of the plurality of ropes engaged with the car, the rope monitoring assembly including a plurality of tension sensors, each tension sensor engaged with one of the ropes and providing an output that corresponds to the tension within that rope, and a device that compares the relative levels of tension within the plurality of ropes.
A rope monitoring assembly for an elevator system having a car, a counterweight, a sheave and a plurality of ropes, each of the plurality of ropes engaged with the car, the counterweight and the sheave to define a car side and a counterweight side of the ropes, the rope monitoring assembly including a plurality of tension sensors, each tension sensor engaged with one of the ropes and providing an output that corresponds to the tension within that rope, and wherein the plurality of tension sensors includes a first group of tension sensors engaged with the ropes and positioned on the car side of the ropes, and a second group of tension sensors engaged with the ropes and positioned on the counterweight side of the ropes, such that there is a pair of tension sensors engaged with each rope.
A method to monitor ropes for an elevator system, the elevator system including a car and a plurality of ropes, each of the plurality of ropes engaged with the car, the method including the steps of:
- operating the elevator system;
- sensing the tension in each of the plurality of ropes during the operation of the elevator system;
- and
- comparing the relative levels of tension within the plurality of ropes.
A method to monitor ropes for an elevator system the elevator system including a car, a counterweight, a sheave, and a plurality of ropes each of the plurality of ropes engaged with the car, the counterweight and the sheave to define a car side and a counterweight side of the ropes, the method including the steps of:
- operating the elevator system;
- and
- sensing the tension in each of the plurality of ropes during the operation of the elevator system wherein the step of sensing the tension in the plurality of ropes includes sensing the tension of the ropes on the car side, and sensing the tension on the counterweight side.
Dependencies are inferred from the claim text.