Drilling device and drilling method utilizing dual drives
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United States of America Patent
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Mar 15, 2011
Grant Date -
Jun 4, 2009
app pub date -
Nov 26, 2008
filing date -
Dec 3, 2007
priority date (Note) -
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Abstract
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.
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