Cutter drum support arm for longwall mining machine
AssigneeGebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H.
InventorDieter Jahn
Life of this patent
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Abstract
A support arm for a cutter drum carried on a longwall mining machine characterized in being formed from two telescoping parts, at least one of which is movable axially relative to the other to change the length of the arm. This enables the mining machine to cut material from a coal seam with one support arm length and roadways at opposite ends of the seam face with longer support arm lengths without the necessity for raising the mining machine on its support tracks in the roadway areas or otherwise adjusting the vertical heights of the support arms.
Claims10
In a longwall mining machine adapted to traverse a face conveyor extending along a mine face of a mineral seam, a support arm pivotally mounted at its inner end to the mining machine about an axis extending perpendicular to the length of the arm and perpendicular to the direction of movement of the mining machine in cutting a seam, a cutter drum carried at the outer end of the arm for rotation about an axis extending parallel to said first-mentioned axis, and means for adjusting the length of said arm.
Dependencies are inferred from the claim text.