Mineral mining installation
AssigneeGewerkschaft Eisenhutte Westfalia
InventorsGerhard Merten, Horst Schlusener, Kunibert Becker, Herbert Beyer
Life of this patent
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Abstract
A mineral mining installation comprises a longwall conveyor, and a plurality of roof support units positioned side-by-side along the goaf side of the conveyor. The roof support units are positioned to define an access area between the conveyor and the roof support units. A plurality of hydraulic bracing rams act on the conveyor to brace the conveyor longitudinally. Each of the bracing rams is pivotally attached to a floor sill of a respective roof support unit. The hydraulic bracing rams are positioned at the goaf-side edge portion of the access area. The bracing forces are transmitted from the bracing rams to the conveyor via respective transverse arms attached to the bracing rams and to the conveyor.
Claims20
A mineral mining installation comprising a longwall structure and a plurality of roof support units positioned side-by-side along the goaf side of the longwall structure, the roof support units being positioned to define an access area between the longwall structure and the roof support units, and a hydraulic bracing ram acting on the longwall structure to brace the longwall structure longitudinally, the bracing ram being pivotally attached to a floor sill of one of the roof support units, wherein the hydraulic bracing ram is positioned at the goaf-side edge portion of the access area closely adjacent to the face-side edge of the floor sill of said one roof support unit, the hydraulic bracing ram lying substantially parallel to the longitudinal axis of the longwall structure, and wherein the bracing forces are transmitted to the longwall structure via a transverse arm attached to the bracing ram and to the longwall structure.
A mineral mining installation comprising a longwall structure and a plurality of roof support units positioned side-by-side along the goaf side of the longwall structure, the roof support units being positioned to define an access area between the longwall structure and the roof support units, and a plurality of hydraulic bracing rams acting on the longwall structure to brace the longwall structure longitudinally, each of the bracing rams being pivotally attached to a floor sill of a respective roof support unit, wherein the hydraulic bracing rams are positioned at the goaf-side edge portion of the access area closely adjacent to the face-side edges of the floor sills of said roof support units, the hydraulic bracing rams lying substantially parallel to the longitudinal axis of the longwall structure, the bracing forces being transmitted to the longwall structure via respective transverse arms attached to the bracing rams and to the longwall structure.
A mineral mining installation comprising a longwall structure and a plurality of roof support units positioned side-by-side along the goaf side of the longwall structure, the roof support units being positioned to define an access area between the longwall structure and the roof support units, a hydraulic bracing ram extending along the goaf-side edge portion of said access area and being pivotally attached to a floor sill of one of the roof support units, and an arm attached to and extending laterally from said longwall structure across said access area to the goaf-side edge portion thereof, said bracing ram being attached to and acting via said arm to transmit bracing forces to the longwall structure.
Dependencies are inferred from the claim text.