Media pressure cavitation protection system for rock drills
US9151117B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Feb 13, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling apparatus has a chassis and a feed beam. The feed beam includes a rock drill hammer, a moveable drill string, a rock drill system coupled to the feed beam, a media pressure system coupled to the rock drill system, and a sensor system. The media pressure system includes a high pressure supply path, a low pressure return path, a control valve coupled to the high pressure supply path, at least one accumulator, and a sensor system. The sensor system includes a pressure transducer coupled to the high pressure supply path, the low pressure return path, or the accumulator to supply pressure data, a control unit configured to monitor and compare the pressure data to an acceptable pressure range stored in memory, and a warning apparatus configured to alert the operator of a pressure outside of the predetermined acceptable pressure range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.