发明名称 |
METHOD AND EQUIPMENT FOR ROCK DRILLING |
摘要 |
<p>A drilling equipment and a method is intended for horizontally boring rocks with a low bench height. The drilling equipment can be used as an accessory to an ordinary dredger or the like. The whole trilling equipment is arranged to turn in a plane parallel to the plane of the brackets of the dredger's boom, and the drilling machine itself together with its drillpropulsion unit is arranged to turn in a plane perpendicular to said brackets plane. These turnings are preferentially effected by hydraulic power from the dredger.</p> |
申请公布号 |
CA1227787(A) |
申请公布日期 |
1987.10.06 |
申请号 |
CA19840458318 |
申请日期 |
1984.07.06 |
申请人 |
JCC JOHNSON CONSTRUCTION COMPANY AB |
发明人 |
SJAELANDER, BO A. |
分类号 |
E21B7/02;E21B15/04;(IPC1-7):E21C11/00 |
主分类号 |
E21B7/02 |
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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