Gear rack for longwall mining machine
AssigneeGebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H.
InventorVolker Knorr
Life of this patent
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Abstract
A gear rack for a longwall mining machine characterized in having a width permitting the arms which carry the cutter drums of the mining machine to move to lower positions relative to a face conveyor such that low seams of coal may be mined. The rack comprises a plate extending along the face conveyor and has driving pin extensions which extend from one face of the plate to engage a driving gear or gears on the mining machine.
Claims8
A gear rack disposed on one side of a face conveyor for a longwall mining machine and adapted to be engaged by a driving gear on the mining machine, said gear rack comprising a plate extending along the face conveyor and having a height approximating that of the conveyor, and driving pin extensions extending from one face of the plate in cantilever relationship for engaging said driving gear, said driving pin extensions being spaced from each other at identical pitch distances and projecting outwardly from the plate over a width slightly exceeding the width of the driving gear.
Dependencies are inferred from the claim text.