Arrangement for supporting rock drilling apparatus
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United States of America Patent
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-
Apr 10, 2001
Grant Date -
N/A
app pub date -
May 18, 1999
filing date -
Nov 27, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An arrangement in a rock drilling apparatus comprising supports (5) directed toward the rear part of the feed, the supports being moveable by means of support cylinders (6) to support the feed during the drilling operation. The arrangement comprises a pressure detector (9), which is arranged to detect the pressure of the pressure fluid in the support cylinders (6) and to make the control unit supply more pressure fluid to the support cylinders (6) when the pressure drops below a pre-set threshold value.
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