Mining or in situ disintegration of hard material – Hard material disintegrating machines – Percussive-type cutter
Patent
1987-06-01
1988-10-18
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Percussive-type cutter
299 94, E21C 320, E21C 2728
Patent
active
047782218
ABSTRACT:
A movable device (1) for openpit mining has a plurality of excavating hammers (11) on a cantilever boom (2) being swivellable in height direction. For facilitating the continuous excavating work and for providing an adaptability to the varying angles of inclination encountered in openpit mining, at least part (23) of the carrier (6) or the carrier (6) itself is shiftable in transverse relation to the longitudinal axis (7) of the cantilever arm (2), so that on downward swivelling movement of the cantilever arm (2) in direction of the arrow (17) the whole carrier (6) or at least part (23) thereof can be shifted in transverse relation to the longidudinal axis (7) of the cantilever arm by a hydraulic cylinder-piston-aggregate (8), thereby maintaining a predetermined angle of inclination or angle of repose.
REFERENCES:
patent: 1475311 (1923-11-01), Miller
patent: 1866753 (1932-07-01), Comoletti
patent: 3999805 (1976-12-01), Lockwood
patent: 4025116 (1977-05-01), Roepke et al.
patent: 4243107 (1981-01-01), Shook
patent: 4664449 (1987-05-01), Barnthaler et al.
Kolleth Horst
Menapace Franz
Weissensteiner Hubert
Wrulich Herwig
Bagnell David J.
Novosad Stephen J.
Voest-Alpine Aktiengesellschaft
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