Articulating steel cap for underground mining support structures

Details Articulating steel cap for underground mining support structures Articulating steel cap for underground mining support structures

1987-11-30

1989-04-11

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

403370, 248357, 405303, E21D 1700

Patent

active

048200859

ABSTRACT:
A steel cap for steel sets in mining support structures is made of a hollow sectional profile having a certain length. A tip is arranged as an insert at one end of the sectional profile. A fork is arranged as an insert at the other end of the sectional profile. Each insert is formed as a plug-in connection. The plug-in connection is provided with a hold free of play in a correct position. For this purpose each insert has at its end facing the sectional profile, a plug with a cross-section corresponding to that of the sectional profile, and at least one surface inclined relative to the longitudinal axis of the steel cap. At least one movable wedge element is arranged for cooperation with each inclined surface. A wedge drive permits driving the wedge element or elements into or out of a locking position relative to the respective inclined surface.

REFERENCES:
patent: 2056248 (1936-10-01), Buchanan
patent: 3991577 (1976-11-01), Thevenoux

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