发明名称 Drilling device and drilling method
摘要 The invention relates to a drilling device and a related drilling method, in which provision is made for a mast, a drilling carriage that is guided along the mast in a displaceable manner and a drive unit for moving the drilling carriage on the mast. In accordance with the invention the drive unit has both a hydraulic cylinder drive and a rope winch drive. The drilling carriage can be coupled with the hydraulic cylinder drive and with the rope winch drive.
申请公布号 US2009139731(A1) 申请公布日期 2009.06.04
申请号 US20080292860 申请日期 2008.11.26
申请人 RIEDER OTTO;HACKL STEFAN 发明人 RIEDER OTTO;HACKL STEFAN
分类号 E21B7/00;E21B19/00;E21B19/06;E21B19/08 主分类号 E21B7/00
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