Support-arm assembly for a drill or borer, particularly for subterranean applications
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United States of America Patent
Stats
-
Dec 21, 1982
Grant Date -
N/A
app pub date -
Mar 25, 1980
filing date -
Mar 26, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mining drill comprising a rail along which a mining drill head is slidably rectilinear, this rail being carried by a hydraulic motor pivotally connected to a rotary head at the end of an arm swingable about a pivot axis which is generally horizontal and is formed by a column or post. A first hydraulic motor is provided to rotate the post about a generally upright axis and hydraulic cylinders can be provided to swing the post about a pivot close to its pedestal. The device is designed to support the rail so that substantially parallel holes can be drilled in a subterranean structure in practically any direction, e.g. with any inclination to the axis of the main gallery, but especially parallel thereto.
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