Method and system for brake testing an elevator car
AssigneeOtis Elevator Company
InventorSandeep Sudi
Life of this patent
Estimating the term…
Abstract
A method of testing elevator car braking distance includes verifying that an elevator car is empty. The method also includes initiating a test procedure. The method further includes triggering a safety actuation device to actuate at least one safety brake to stop an elevator car. The method yet further includes recording braking data during a braking period. The method also includes recording braking data with at least one piece of elevator car equipment. The method further includes generating a braking data report that includes at least one of braking distance and braking deceleration of the elevator car.
Claims14
A method of testing elevator car braking comprising:
- verifying that an elevator car is empty;
- initiating a test procedure;
- triggering a safety actuation device to actuate at least one safety brake to stop the elevator car, wherein the safety actuation device and the at least one safety brake are mounted to the elevator car;
- recording braking data during a braking period in which the at least one safety brake stops the elevator car;
- recording second braking data with at least one piece of elevator car equipment;
- and
- generating a braking data report that includes at least one of braking distance and braking deceleration of the elevator car;
- wherein the safety actuation device is an electronic device for monitoring at least one of velocity and acceleration;
- wherein the at least one piece of elevator car equipment comprises a camera mounted to the elevator car, the camera taking a picture of brake marks left on a guide rail by the at least one safety brake.
A method of testing elevator car braking comprising:
- verifying that an elevator car is empty;
- initiating a test procedure;
- triggering a safety actuation device to actuate at least one safety brake to stop the elevator car;
- recording braking data during a braking period;
- recording second braking data with at least one piece of elevator car equipment;
- generating a braking data report that includes at least one of braking distance and braking deceleration of the elevator car;
- calculating the effect of a counterweight during the braking process to determine actual free fall braking data of the elevator car.
A method of automated testing of elevator car braking comprising:
- initiating a test procedure with a device;
- triggering an electronic safety actuator to actuate at least one safety brake to stop an elevator car;
- recording braking data with at least one piece of elevator car equipment;
- and
- generating a braking data report that includes at least one of a braking distance and braking deceleration of the elevator car;
- wherein the at least one piece of elevator car equipment comprises a camera mounted to the elevator car, the camera taking a picture of brake marks left on a guide rail by the at least one safety brake.
An elevator brake testing system comprising:
- an electronic safety actuator coupled to an elevator car for actuating a safety brake, the electronic safety actuator detecting braking data during a brake test;
- a controller in operative communication with the electronic safety actuator for transferring the braking data;
- a remote device;
- a camera operatively coupled to the elevator car, the camera positioned to capture an image of brake marks on a guide rail left by the safety brake;
- and
- a network wirelessly connecting the camera to the controller, and the controller to the remote device, the remote device remotely initiating an automated test of the elevator brake testing system by triggering the electronic safety actuator, the controller communicating an elevator car braking distance to the remote device.
Dependencies are inferred from the claim text.