Escalator with a sensor for detecting sheave misalignment
AssigneeOtis Elevator Company
InventorsSrinivasa Rao Ladi, Serralathan Sr
Life of this patent
Estimating the term…
Abstract
An escalator system wherein when a handrail belt is moving from rotation of a plurality of elevator sheaves: a controller receives data from a plurality of sensors, identifies from the data a first sheave of the plurality of sheaves as comprising reference alignment value for the system, determines for the plurality of sheaves a respective plurality of alignment values, compares the plurality of alignment values with the reference alignment value, and provides a predetermined response when any of the plurality of alignment values diverges from the reference alignment value by more than a predetermined amount.
Claims20
An escalator system comprising:
- a first member,
- a first belt,
- a first assembly operationally connected to the first member and the first belt, the first assembly comprising
- a plurality of sheaves mounted proximate the first member for driving the first belt, and a plurality of sensors for the plurality of sheaves,
- the plurality of sensors having a plurality of sampling elements and sensing elements, the plurality of sampling elements being disposed on the respective plurality of sheaves and the plurality of sensing elements being disposed on the first member proximate the respective plurality of sheaves,
- a controller communicating with the plurality of sensing elements, wherein when the first belt is moving from rotation of the plurality of sheaves the controller:
- receives data from the respective plurality of sensors,
- identifies from the data a first sheave of the plurality of sheaves as comprising a reference alignment value for the system,
- determines for the plurality of sheaves a respective plurality of alignment values,
- compares the plurality of alignment values with the reference alignment value, and
- provides a predetermined response when any of the plurality of alignment values diverges from the reference alignment value by more than a predetermined amount.
An escalator system comprising:
- a first member,
- a belt,
- a handrail drive assembly operationally connected to the first member and the belt, the assembly comprising:
- a sheave mounted proximate the first member on which the belt is driven, and a sensor mounted to the first member proximate to the sheave, the sensor sensing a relative transverse position of the belt relative to the sheave,
- a controller communicating with the sensor, wherein when the belt is moving from rotation of the sheave the controller:
- receives data from the sensor,
- determines when the belt moves transversely relative to the sheave,
- compares the transverse movement with a reference value,
- provides a predetermined response when the transverse movement diverges from the reference value by more than a predetermined amount.
Dependencies are inferred from the claim text.