发明名称 |
DEVICE FOR DIRECTED DRILLING OF BORE HOLES OF PARALLEL CUT |
摘要 |
FIELD: mining; applicable in directed drilling of parallel cut bore holes with their use as compensation hollows in driving of mine workings. SUBSTANCE: device includes guide member made in the form of two coaxial branch pipes interconnected by tubular rod, drilling rod with bushing and crown bit. In this case, guide member is directly secured to bushing and drilling crown bit is located between coaxial branch pipes to guide member at a distance from its axis if not more than radius of drilling crown bit. EFFECT: higher efficiency of directed drilling of parallel cut bore holes. 3 degl
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申请公布号 |
RU2122100(C1) |
申请公布日期 |
1998.11.20 |
申请号 |
RU19930052269 |
申请日期 |
1993.11.17 |
申请人 |
VOSTOCHNYJ NAUCHNO-ISSLEDOVATEL'SKIJ GORNORUDNYJ I;VOS NI SKIJ GORNORUDNYJ I |
发明人 |
NAGAEV KH.KH.;LOBANOV A.S.;KARAPETJAN JU.M. |
分类号 |
E21B7/28;(IPC1-7):E21B7/28 |
主分类号 |
E21B7/28 |
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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