Mineral mining installation

Details Mineral mining installation Mineral mining installation

1981-06-04

1983-09-06

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405291, E21D 1544

Patent

active

044026340

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.

REFERENCES:
patent: 3448584 (1969-06-01), Rieschel
patent: 3505823 (1970-04-01), Bell
patent: 4048804 (1977-09-01), Elsner et al.
patent: 4169689 (1979-10-01), Weirich et al.
patent: 4195953 (1980-04-01), Becker et al.
patent: 4227833 (1980-10-01), Plester et al.

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