发明名称 |
Method and means for adjusting the feed support of a rock drilling unit into a given distance from the drilling location |
摘要 |
The feed support of a rock drilling unit is adjusted to be a given distance from a rock surface wherein holes are to be drilled. A drill bit is moved into abutment with the rock surface. The feed support is moved relative to the bit toward the rock surface. Such movement is stopped when a depth measuring instrument determines that the feed support is at a position spaced the given distance from the rock surface.
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申请公布号 |
US4537263(A) |
申请公布日期 |
1985.08.27 |
申请号 |
US19820372237 |
申请日期 |
1982.04.26 |
申请人 |
INGENIOR THOR FURUHOLMEN A/S |
发明人 |
BJOR, HAKON E. |
分类号 |
E21B15/04;(IPC1-7):E21B15/04 |
主分类号 |
E21B15/04 |
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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