Machine for mechanically advancing clean cut underground mining galleries of various profiles
AssigneeBochumer Eisenhutte Heintzmann GmbH & Co. KG
InventorsKarlheinz Bohnes, Kuno Guse
Life of this patent
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Abstract
A method for mechanically advancing clean cut underground mining galleries of various profiles, in which during a primary phase of the operation a pilot excavation of circular cross-section smaller than the final desired cross-section of the mining gallery is carried out and in which during a secondary phase of the operation, overlapping in time with the primary phase, the pilot excavation is widened to the desired finished cross-section of the mining gallery; and a machine for carrying out the method.
Claims27
In a machine for mechanically advancing clean-cut underground mining galleries of various profiles, a combination comprising elongated support means having a longitudinal axis, a front end and a rear end;
- full-cut tools carried by said front end of said support means for cutting a pilot excavation of circular cross-section smaller than the desired final cross-section of the mining gallery;
- a rotatable carrier body having an axis of rotation parallel to said longitudinal axis;
- clean-cut tools carried at said rear end of said support means for widening said pilot excavation to the desired cross-section of the mining gallery, said clean-cutting tools being operatively connected to said carrier body adjustable in radial direction of the latter;
- and means on said support means for bracing and for advancing said support means in said pilot excavation.
Dependencies are inferred from the claim text.