Device for detecting the replacement state of wear of a high-strength fiber rope during use in lifting gear
US9873597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2014 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Dec 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates generally to hoists such as cranes which instead of steel wire ropes use high-strength fiber ropes. The invention relates in particular to an arrangement for detecting the discard state of a high-strength fiber rope when used on such hoists, with a means for detecting at least one rope parameter and an evaluation unit for evaluating the rope parameter, and providing a discard signal depending upon the evaluation of the rope parameters. According to the invention, the detection means comprises torsional stiffness detection means to determine the torsional stiffness of the rope, whereby the evaluation unit provides the discard signal depending on the determined torsional stiffness of the rope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.