ROTATION UNIT, ROCK DRILLING UNIT AND METHOD FOR ROCK DRILLING
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United States of America Patent
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N/A
Issued Date -
Feb 6, 2014
app pub date -
Apr 13, 2012
filing date -
Apr 15, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A rotation unit, rock drilling unit and method for rock drilling. The rotation unit includes a main shaft that is rotated around its longitudinal axis by means of a rotating motor. The main shaft is supported on a body of the rotation device slidingly in the axial direction. This slide property is utilized when connection threads of drilling equipment and drilling components comprised by it are connected.
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