Monitoring of elevator pit tie-down and compensation
AssigneeOtis Elevator Company
InventorsRandy Roberts, Johanna Whitwell, Craig Drew Bogli
Life of this patent
Estimating the term…
Abstract
A method of monitoring a tie-down compensation of an elevator system includes positioning one or more sensor assemblies in a hoistway of the elevator system. The sensor assemblies are configured to monitor a position of the tie-down compensation in the hoistway. The tie-down compensation has a compensation member of the elevator system routed therethrough. A distance between a fixed location in the hoistway and the tie-down compensation is measured via the sensor assemblies, and the measured distance is compared to a threshold distance. One or more actions is taken based on a result of the comparison.
Claims20
An elevator system comprising:
- a hoistway;
- an elevator car configured to travel in the hoistway;
- a counterweight disposed in the hoistway;
- a tension member connecting the elevator car to the counterweight and configured to move the elevator car along the hoistway;
- a pit located at a bottom of the hoistway;
- a compensation member extending from the elevator car toward the pit and from the pit toward the counterweight;
- a tie-down compensation located in the pit through which the compensation member is routed;
- and
- one or more sensor assemblies configured to monitor a position of the tie-down compensation in the hoistway.
A method of monitoring a tie-down compensation of an elevator system, comprising:
- positioning one or more sensor assemblies in a hoistway of the elevator system, the sensor assemblies configured to monitor a position of the tie-down compensation in the hoistway, the tie-down compensation having a compensation member of the elevator system routed therethrough;
- measuring a distance between a fixed location in the hoistway and the tie-down compensation via the one or more sensor assemblies;
- comparing the measured distance to a threshold distance;
- and
- taking one or more actions based on a result of the comparison.
An elevator system comprising:
- a hoistway;
- an elevator car configured to travel in the hoistway;
- a counterweight disposed in the hoistway;
- a tension member extending between and connecting the elevator car to the counterweight;
- a pit located at a bottom of the hoistway;
- a compensation member extending from the elevator car toward the pit and from the pit toward the counterweight;
- a tie-down carriage connected to the compensation member, wherein the tie-down carriage is configured to be biased downwardly toward the bottom of the hoistway to tension the compensation member;
- and
- one or more LIDAR sensors configured to monitor a position of the tie-down carriage in the hoistway.
Dependencies are inferred from the claim text.