Mineral mining installation
AssigneeGewerkschaft Eisenhutte Westfalia
InventorYavier Arsuaga
Life of this patent
Estimating the term…
Abstract
A mineral mining installation is provided for use in a steeply-inclined longwall working. The installation comprises a ladder-shaped support frame, and a plurality of roof support units. The support frame extends along the entire length of the longwall working, and has a pair of generally parallel longitudinal beams interconnected by a plurality of transverse beams. The roof support units are positioned between the longitudinal beams, and are supported on the transverse beam. Each of the longitudinal beams comprises a plurality of beam sections pivotably connected together end-to-end. The support frame comprises a plurality of detachably connected sub-frames, each of which comprises a respective transverse beam and a respective beam section of each of the longitudinal beams.
Claims31
A mineral mining installation for use in a steeply-inclined longwall working, the installation comprising a ladder-shaped support frame and a plurality of roof support units, the support frame extending along the longwall working and having a pair of generally parallel longitudinal beams interconnected by a plurality of transverse beams, the roof support units being positioned between the longitudinal beams and being supported on the transverse beams, each of the longitudinal beams comprising a plurality of beam sections pivotably connected together end-to-end, wherein the support frame comprises a plurality of detachably connected sub-frames, each of which comprises a respective transverse beam and a respective beam section of each of the longitudinal beams.
A method of introducing a mineral mining installation into a steeply-inclined longwall working, the installation comprising a ladder-shaped support frame and a plurality of roof support units, the support frame having a pair of generally parallel longitudinal beams interconnected by a plurality of transverse beams, each of the longitudinal beams comprising a plurality of beam sections pivotably connected together end-to-end, and the support frame comprising a plurality of detachably connected sub-frames, each of which comprises a respective transverse beam and a respective beam section of each of the longitudinal beams, the method comprising the steps of coupling each of the roof support units to the transverse beam of a respective sub-frame in a roadway at the top of the longwall working, and introducing the sub-frames and attached roof support units into the longwall working in succession, wherein each time a sub-frame is introduced into the longwall working, its longitudinal beam sections are pivotably connected to the longitudinal beam sections of the previously-introduced sub-frame, and then the interconnected sub-frames and roof support units are lowered into the longwall working by a distance which corresponds to the length of one sub-frame.
Dependencies are inferred from the claim text.