Tensioning a longwall mineral mining installation

Details Tensioning a longwall mineral mining installation Tensioning a longwall mineral mining installation

1978-03-22

1979-10-02

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

E21D 1544

Patent

active

041696891

ABSTRACT:
Mining apparatus comprises a longwall conveyor and tensioning means for tensioning the conveyor in its longitudinal direction. The tensioning means is constituted by a plurality of hydraulic tensioning rams, each of which is mounted, in use, by means of pivot joints at each end thereof directly between the conveyor and a respective roof support unit of a roof support assembly. Each tensioning ram extends at an acute angle to the longitudinal axis of the conveyor. The tensioning rams are positioned in two groups, one in each end zone of the conveyor.

REFERENCES:
patent: 3072241 (1963-01-01), Rosenberg et al.
patent: 3159003 (1964-12-01), Kearsley
patent: 3447328 (1969-06-01), Schuerman
patent: 3691775 (1972-09-01), Holtrup et al.
patent: 3726097 (1973-04-01), Linke et al.

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