Apparatus for pivotally positioning a clearing shield for a drum-cutter mining machine
AssigneeGeb. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
InventorRolf Krause
Life of this patent
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Abstract
A rotary actuator is supported within the cutter drum of a drum-cutter mining machine for pivotally positioning a clearing shield about the outer peripheral surface of the cutter drum. A holder used to pivotally support the clearing shield from the cutter drum is resiliently coupled to an outer ring member of the rotary actuator. An inner ring of the actuator encircles a reduction drive gear for the cutter drum and is connected thereto by bolt fasteners that extend through projections from the inner ring while received in recesses in the reduction drive gear. The bolt fasteners resist loading in the axial direction of the drum; while spring members between the reduction drive gear and the inner ring absorb peripheral loading.
Claims5
In an underground mining machine having a pivot arm supporting a cutter drum to rotate about an axis for working a mine face, the combination therewith of a clearing shield apparatus including a clearing shield spaced outwardly from the periphery of the cutter drum, holder means movable about said axis for carrying said clearing shield, said cutter drum including support means to carry said holder means, and a rotary actuator means supported to extend from within said cutter drum and coupled to pivot said holder means about said axis relative to said support means for positioning the clearing shield about the outer periphery of said cutter drum.
Dependencies are inferred from the claim text.