Support-arm assembly for a drill or borer, particularly for subt

Supports – Machinery support – Movable machine

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173 43, F16M 100

Patent

active

043645402

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.

REFERENCES:
patent: 830586 (1906-09-01), Hamilton
patent: 2766012 (1956-10-01), Hale
patent: 3481409 (1969-12-01), Westerlund
patent: 3565184 (1971-02-01), Alvsjo et al.
patent: 3721304 (1973-03-01), Hanson
patent: 3796401 (1974-03-01), Mikhailovich
patent: 3896885 (1975-07-01), Dahlstrom et al.
patent: 3923276 (1975-12-01), Kimber
patent: 4187546 (1980-02-01), Heffernan et al.
patent: 4232849 (1980-11-01), Kimber
patent: 4266749 (1981-05-01), Lundstrom
patent: 4267892 (1981-05-01), Mayer

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