Slewing control device for hybrid construction machine and hybrid construction machine
US10053837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2016 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Oct 28, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A brake control unit operates a mechanical brake when a slewing operation amount detected by a slewing operation amount detection unit indicates slewing stop and when a slewing speed detected by a slewing speed detection unit is equal to or lower than a predetermined speed. A time measurement unit measures a brake operation time period during which a brake operation detection value detected by a brake operation detection unit exceeds a predetermined threshold. When the mechanical brake is operated and when the brake operation time period measured by the time measurement unit exceeds a predetermined reference time period, a slewing control unit stops outputting a slewing command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.