Elevator diagnosing device
US10486935B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2015 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Mar 22, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator diagnosing device includes a hoisting machine including a sheave, around which a middle portion of a main rope suspending an elevator car is wound, and a controller controlling travel of the elevator car by controlling operation of the hoisting machine. The controller includes a car controller performing first travel control causing the elevator car to travel at a first acceleration/deceleration and second travel control causing the elevator car to travel at a second acceleration/deceleration less than the first acceleration/deceleration, a rope feed amount difference detector detecting a difference in feed amount of the main rope by rotation of the sheave when the elevator car travels equal distances under the first and second travel controls, and a determiner determining traction performance of the sheave based on the difference in the amount of feed of the main rope detected by the rope feed amount difference detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.