发明授权
- 专利标题: Underground boring machine and method for controlling underground boring
- 专利标题(中): 地下钻孔机及地下钻孔控制方法
-
申请号: US11654195申请日: 2007-01-17
-
公开(公告)号: US07721821B2公开(公告)日: 2010-05-25
- 发明人: Robin W. Carlson , Randy R. Runquist
- 申请人: Robin W. Carlson , Randy R. Runquist
- 申请人地址: US IA Pella
- 专利权人: Vermeer Manufacturing Company
- 当前专利权人: Vermeer Manufacturing Company
- 当前专利权人地址: US IA Pella
- 代理机构: Merchant & Gould P.C.
- 主分类号: E21B44/00
- IPC分类号: E21B44/00
摘要:
A method and system for controlling a horizontal directional drilling machine having a boring tool. A rate of rotation and a rate of thrust are selected by an operator. Controls allow an automatic boring operation mode to be initiated to maintain the selected rate of rotation and thrust without further input from the operator. Periodically, when the rotation and thrust are interrupted, such as to modify the drill string, the automatic boring operation mode is interrupted. The automatic boring operation mode may be resumed without requiring the operator to select the rate of rotation and rate of thrust. The rate of rotation is resumed before the rate of thrust to reduce drill string shock loads and increase drilling performance.
公开/授权文献
信息查询