Automatic control systems for rippers for use in civil works
US4062539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Jun 28, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/2203
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The control system is provided with a detector that detects whether the ripper is operated in a piercing operating mode or a digging operating mode. In the piercing operating mode the angle of the shank is adjusted to a preset piercing angle, while in the digging operating mode the shank angle is adjusted to a preset digging angle thereby effecting optimum piercing and digging operations. Limit switches for detecting upper and lower limit positions of the shank are provided for raising and lowering the shank between these limit positions while adjusting the shank angle. Further an overload detector is provided for raising the shank when its load exceeds a predetermined load and lowering the shank when the load decreases below it. A manual preference control device also provided for enabling manual control during automatic control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.