Control device for an advancing support in underground mining

Details Control device for an advancing support in underground mining Control device for an advancing support in underground mining

1981-06-29

1983-04-12

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Ground stabilization or reinforcement

91170MP, E21D 2318

Patent

active

043796621

ABSTRACT:
An improved control for an underground mining working support unit arrangement of the type having an adjacent support unit arrangement hydraulically connectable to the working support unit arrangement in which a plurality of hydraulic supports support load points, it is disclosed wherein the hydraulic supports are successively connectable to several of the load points with a reversing valve operable to alternately connect control valves to selected hydraulic supports.

REFERENCES:
patent: 3453935 (1969-07-01), Rieschel
patent: 3541926 (1970-11-01), Grebe
patent: 4327628 (1982-05-01), Weirich et al.

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