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AssigneeGewerkschaft Eisenhutte Westfalia
InventorsKunibert Becker, Rudiger Kirchbrucher, Gunter Lagodka, Klaus-Dieter Pohlmann
Estimating the term…
A roof support assembly is constituted by a plurality of roof support units and a plurality of advance mechanisms. The units are positioned side-by-side along a longwall face of a mineral mining working. Each advance mechanism comprises a pair of generally parallel hydraulic advance rams and a guide rod system constituted by a pair of resilient generally parallel guide rods. Each guide rod system is attached, at one end, to a conveyor extending along the longwall face. The other end of each guide rod of each advance mechanism is attached to a respective slide piece which is slidably guided on a respective guide rail which is attached to a respective floor girder of a roof support unit. The slide pieces are attached to the piston rods of the hydraulic advance rams. The cylinders of the hydraulic advance rams are attached to one of the adjacent floor girders, and the slide piece attached to the piston rod of hydraulic advance ram is attached to the guide rod system. The slide piece attached to the piston rod of the hydraulic advance ram is attached to the other floor girder.
An advance mechanism for a roof support assembly comprising a plurality of roof support units positioned side-by-side along, for example, a longwall face of a mineral mining working, the advance mechanism comprising a pair of generally parallel hydraulic advance rams and a guide rod system including a pair of resilient, generally parallel guide rods, the guide rod system being attached, at one end, to a conveyor extending along the longwall face, the other end of each guide rod being attached to a respective slide piece which is slidably guided on a respective guide rail which is attached to a respective floor girder of a roof support unit, the slide pieces being attached to the piston rods of the hydraulic advance rams, wherein the cylinders of the hydraulic advance rams are attached to one of the adjacent floor girders, and the slide piece attached to the piston rod of one of the hydraulic advance rams is attached to the guide rod system.
A roof support assembly for use in a longwall face of a mineral mining working, the roof support assembly being constituted by a plurality of roof support units positioned side-by-side, and means for advancing the roof support units towards the longwall face, each of the roof support units having at least one floor girder, the advance means being constituted by a plurality of advance mechanisms, each advance mechanism comprising a pair of generally parallel hydraulic advance rams and a guide rod system including a pair of resilient, generally parallel guide rods, the guide rod system being attached, at one end, to a conveyor extending along the longwall face, the other end of each guide rod being attached to a respective slide piece which is slidably guided on a respective guide rail which is attached to a respective floor girder of a roof support unit, the slide pieces being attached to the piston rods of the hydraulic advance rams, wherein the cylinders of the hydraulic advance rams are attached to one of the adjacent floor girders, and the slide piece attached to the piston rod of one of the hydraulic advance rams is attached to the guide rod system.
Dependencies are inferred from the claim text.