Mine roof support assembly

Details Mine roof support assembly Mine roof support assembly

1977-11-30

1980-01-22

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

E21D 1544

Patent

active

041847911

ABSTRACT:
A mine roof support assembly comprises three basically similar mine roof support units positioned in a side-by-side relationship along a beam. The central unit is fastened to the beam for movement therewith, and the two outer units are flexibly connected to the beam by respective guide rod assemblies. Each of the outer units is provided with an alignment device, such as a short working stroke hydraulic ram, which acts on the beam in the direction of the longitudinal axis of the beam.

REFERENCES:
patent: 3431738 (1969-03-01), Groetschel
patent: 3448584 (1969-06-01), Rieschel
patent: 3504944 (1970-04-01), Holz et al.

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