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AssigneeGutehoffnungshutte Sterkrade Aktiengesellschaft
InventorsHeinrich Goris, Roland Gunther, Kurt Ogorek, Karl-Heinz Schwarting, Wilfried Witulski
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A mining method for cutting away hard mineral materials of a mining face, comprises, undercutting the mineral material by directing a liquid jet into the running face to form a mineral slab which overlies the undercutting and breaking the bond of the slab from the main face by striking it with a wedge-shaped impact tool in the undercut area and conveying away the broken-off material. The apparatus for carrying out the mining operation comprises a machine which is adapted to run along the mining face alongside a conveyor for conveying away the material. The machine includes an operating mechanism for moving a breaking head at each end inwardly into the mine face and along the mine face. The breaking head carries a percussion wedge member which may be driven into the mine face. In addition, it carries a nozzle assembly for directing a liquid jet at high pressure against the mining face so as to undercut an area thereof and to leave a slab overlying the undercut area which may be broken away by the wedge-shape percussion member.
A method of mining particularly hard mineral raw materials using a pivotal fluid pressure jet and a percussion device for undercutting the mineral comprising undercutting the mineral by directing the high pressure fluid jet without interruption at an even rate in the mining direction while swinging the jet upwardly and downwardly in a vertical plane lying at an acute angle to the face being mined and directing the percussion instrument so as to mine away the mineral of a selected thickness in coordination with the action of the fluid jet by engaging the percussion instrument in the mineral and performing pivotal motions in a horizontal plane and following the action of the percussion instrument with the fluid jets to break away the minerals engaged by the percussion tool. PG,19
Apparatus for cutting away hard mineral deposits of a running face of a mine, comprising, a machine housing adapted to be moved along the face, at least one impact head mounted on said housing for movement toward and away from the running face and to and fro along the running face, a percussion member of wedge-shaped configuration on said head, mounting means mounting said percussion member on said head for movement relative to said including feeding elements for moving said percussion member forwardly in a substantially horizontal direction and adjusting elements for extending and retracting said percussion member in a substantially vertical direction, a nozzle assembly carried by said head for pivotal movement upwardly and downwardly in a substantially vertical plane and having a nozzle discharge for discharging a liquid at high pressure against the mining face in advance of said head to undercut the face, nozzle pivoting means for pivoting said nozzles upwardly and downwardly, drive means for driving said percussion member to move it into the undercutting with a force to break away the material thereover.
Apparatus for cutting away hard mineral deposits of a running face of a mine, comprising a machine housing adapted to be moved along the face, at least one impact head mounted on said housing for movement toward and away from the running face and to and fro along the running face, a percussion member of wedge-shaped configuration on said head, mounting means mounting said percussion member on said head for movement relative to said head, a nozzle assembly carried by said head and having a nozzle discharge for discharging a liquid at high pressure against the mining face in advance of said head to undercut the face, drive means for driving said percussion member to to move it into the undercutting with a force to break away the material thereover, said nozzle assembly comprising a swivel pipe having an end directed toward the face with a nozzle secured thereto, means in said head mounting said swivel pipe for swiveling movement in a substantially vertical plane, drive means connected to said pipe to swivel said pipe, and means for conducting a liquid into said pipe for discharge out through said nozzle.
Dependencies are inferred from the claim text.