Continuous mining machine having contour cutters

Details Continuous mining machine having contour cutters Continuous mining machine having contour cutters

E - Fixed Constructions

21

C

262/54

E21C 25/16 (2006.01) E21C 27/22 (2006.01)

Patent

CA 1174248

ABSTRACT OF THE DISCLOSURE A boring type continuous mining machine having a plurality of boring heads each of which is adapted to cut a substantially rectangular profile bore in the mine face. Each boring head includes a primary cutter head and at least one contour cutter rotatable with the primary cutter and also about an axis spaced from and parallel to the rotational axis of the primary cutter. Each contour cutter carries eccentric cutter teeth which cut selective profile areas radially outwardly and intersecting the bore cut by the associated primary cutter head. The boring heads are supported on the mining machine frame in a manner allowing independent drive of the boring heads and isolating thrust loads from the boring head drive trains.

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