Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter shiftable horizontally
Patent
1985-09-06
1987-02-10
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Cutter shiftable horizontally
299 76, F21C 2724
Patent
active
046418890
ABSTRACT:
In a cutting machine, a cutting arm is swivellable around a horizontal axis and around a vertical axis and carries on its free end a cutting tool. The horizontal swivelling axis of the cutting arm is displaceable relative to the frame of the cutting machine. Displacing of the horizontal swivelling axis is allowed by arranging the swivelling axis on a rocker arm connected with the frame of the cutting machine and is turnable around a vertical axis and is swivellable around a horizontal swivelling axis. With the rocker arm assuming a lowered position, the horizontal swivelling axis of the rocker arm is, as seen in an advancing direction, located in front of the horizontal swivelling axis of the cutting arm. The swivelling drive, for example is formed of a hydraulic piston-cylinder-arrangement, for swivelling the cutting arm around its horizontal swivelling axis and is supported on the rocker arm. The rocker arm can be swivelled around its swivelling axis on the cutting machine from a backwardly directed and approximately horizontal position at least to an upwardly directed and approximately vertical position. The rocker arm is supported on a conventional traversing gear of a cutting machine having a universally swivellable cutting arm.
REFERENCES:
patent: 3929378 (1975-12-01), Frenyd et al.
patent: 3966258 (1976-06-01), Dolecki
patent: 4349230 (1982-09-01), Hamburger et al.
Goodwin Michael A.
Novosad Stephen J.
Voest-Alpine Aktiengesellschaft
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