Apparatus and methods for sensing boom side deflection or twist
US11142434B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2015 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Aug 27, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/905
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A crane includes a boom adapted for lifting a load and a sensor adapted for measuring the side deflection or twist of the boom during the lifting of the load. The crane may also include a system for detecting side deflection in the boom using a first sensor mounted to the boom for sensing a first value corresponding to deflection of the boom, a second sensor for sensing a second, reference value, and a controller for comparing the first and second values to determine a deflection amount. An operator may be notified if the side deflection or twist values exceed a predetermined value. Side deflection or twist values for the boom during a lifting operation may also be logged by a data recording device for later use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.