发明名称 |
BREAKOUT WRENCH SYSTEM |
摘要 |
<p>A breakout wrench for use with a rock drill string includes a frame adapted for mounting to a rock drill feed guide structure, and a sub-frame rotatably connected to the frame about a drill string longitudinal axis. The sub-frame supports a pair of jaw members adapted for radial movement towards and away from one another and to releasably engage a first section of a drill string. The breakout wrench also includes a clamping member supported by the rock drill feed guide structure. The clamping member is adapted to releasably engage a second section of the drill string spaced axially from the first section.</p> |
申请公布号 |
WO2011112274(A1) |
申请公布日期 |
2011.09.15 |
申请号 |
WO2011US21067 |
申请日期 |
2011.01.13 |
申请人 |
BUCYRUS MINING EQUIPMENT, INC;CONNELL, STUART A. |
发明人 |
CONNELL, STUART A. |
分类号 |
E21B19/16;B25B13/50;E21B7/02;E21B19/14 |
主分类号 |
E21B19/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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