Anchor bolt drilling and setting device
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United States of America Patent
Stats
-
Feb 28, 1995
Grant Date -
N/A
app pub date -
Jul 2, 1993
filing date -
Jul 3, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For inserting anchor bolts in the region of the tunnel side wall up to near to the face, in addition to anchor bolt drilling and setting devices for the roof in the front region of the road-driving machine additional anchor bolt and setting devices are mounted displaceably guided in a vertical direction. The additional anchor bolt drilling and setting devices are swivellable around an axis which is parallel to the running surface plane of the drive mechanism of the road-driving machine.
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