Monitoring roller guide health

Patent metadata

Field	Value
Publication number	US-11325809-B2
Application number	US-201815925112-A
Country	US
Kind code	B2
Filing date	Mar 19, 2018
Priority date	Mar 19, 2018
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A guide for individual movement machinery. The guide includes a base, a frame and a monitoring system. The monitoring system includes arrays of sensors affixed to each of the base and the frame to respectively sense guide conditions and to generate readings accordingly.

First claim

What is claimed is:

1. A guide for individual movement machinery for an elevator car in an elevator system, the elevator system comprising a hoistway rail extending along a hoistway and the elevator car, which is movably disposed in and drivable along the hoistway rail, and the guide engaging with the hoistway rail and comprising:
a base attached to the elevator car;
a frame comprising lever arms; and
a monitoring system comprising arrays of base and lever arm sensors comprising at least acceleration sensors and being embedded in each of the base and the lever arms of the frame to respectively sense guide conditions and to generate readings accordingly.

2. The guide according to claim 1 , wherein:
the frame comprises the lever arms, which are coupled to the frame, and lever arm control assemblies configured to limit movements of each of the lever arms relative to the frame,
the guide further comprises slider assemblies rotatably coupled to each of the lever arms,
the lever arms comprise opposed front-to-back lever arms and a side-to-side lever arm, and
the slider assemblies comprise opposed front-to-back slider assemblies rotatably coupled to the front-to-back lever arms, respectively, and a side-to-side slider assembly rotatably coupled to the side-to-side lever arm.

3. The guide according to claim 2 , wherein the lever arm control assemblies each comprise at least one of:
a spring or damping unit; and
a mechanical stop.

4. The guide according to claim 1 , wherein the arrays of base and lever arm sensors comprise micro-electrical mechanical system (MEMS) devices in a size range of twenty micrometers to one millimeter.

5. The guide according to claim 1 , wherein the arrays of base and lever arm sensors comprise:
a base sensor array affixed to the base; and
additional sensor arrays respectively affixed to the frame.

6. The guide according to claim 5 , wherein the base sensor array is disposed at or near to a center of the base.

7. The guide according to claim 5 , wherein the base sensor array comprises at least acceleration, tilt and rotation sensors.

8. The guide according to claim 5 , wherein the additional sensor arrays are respectively disposed proximate to slider assemblies at lever arms of the frame.

9. The guide according to claim 5 , wherein each of the additional sensor arrays comprises at least acceleration, shock and vibration sensors.

10. The guide according to claim 1 , further comprising an indicator which is configured to display a status indication based on the readings.

11. The guide according to claim 10 , wherein the indicator comprises light emitters, which are respectively associated with each of the guide conditions and which are configured to emit light of various colors to generate the status indication.

12. The guide according to claim 10 , wherein the indicator is communicative with at least one of an elevator system controller and an external computing device.

13. An elevator system comprising at least first and second guides according to claim 1 , wherein the readings are generated from comparisons between complementarily sensed guide conditions of the at least first and second guides.

14. An elevator system for use in a structure formed to define a hoistway, the elevator system comprising:
a hoistway rail extending along the hoistway;
a drive system; and
an elevator car, which is movably disposed in the hoistway and drivable to move along the hoistway rail by the drive system, the elevator car comprising:
one or more elevator roller guides that respectively engage with the hoistway rail; and
sensors affixed to each of the one or more of the elevator roller guides and configured to sense elevator roller guide conditions and to generate readings accordingly,
wherein the sensors are provided in arrays of sensors comprising:
a base sensor array embedded in a base of each of the one or more elevator roller guides and comprising at least acceleration, tilt and rotation sensors; and
lever arm sensor arrays respectively embedded in a lever arm of each one of the one or more of the elevator roller guides and comprising at least acceleration, shock and vibration sensors.

15. The elevator system according to claim 14 , wherein the sensors comprise micro-electrical mechanical system (MEMS) devices in a size range of twenty micrometers to one millimeter.

16. The elevator system according to claim 14 , further comprising an indicator which is configured to display a status indication based on the readings.

17. The elevator system according to claim 14 , further comprising an elevator system controller which is configured to control at least the drive system based on the readings.

18. A method of operating an elevator system for use in a structure formed to define a hoistway,
the elevator system comprising a hoistway rail extending along the hoistway, a drive system and an elevator car, which is movably disposed in the hoistway and drivable to move along the hoistway rail by the drive system, the elevator car comprising one or more elevator roller guides that respectively engage with the hoistway rail, and
the method comprising:
embedding sensors in a base of each of the one or more elevator roller guides and in a lever arm of each one of the one or more of the elevator roller guides;
activating the sensors to sense elevator roller guide conditions during operations of the elevator system and to generate readings accordingly; and
controlling at least the drive system during the operations of the elevator system based on the readings.

19. The method according to claim 18 , further comprising remote monitoring of the elevator system.

Assignees

• Otis Elevator Co

Inventors

• Ferrisi John
• Hootsmans Norbert Antony Murray

Classifications

• B66B1/3492

  Position or motion detectors or driving means for the detector (B66B1/40, B66B1/50 take precedence; length measuring G01B; speed measuring G01P) · CPC title

• B66B7/046

  Rollers · CPC title

• G05B19/0425

  Safety, monitoring · CPC title

• B66B5/0018

  Devices monitoring the operating condition of the elevator system · CPC title

• G05B2219/2659

  Elevator · CPC title