Mine roof support

Details Mine roof support Mine roof support

1980-06-03

1982-01-05

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405291, E21D 1544

Patent

active

043091300

ABSTRACT:
A mine roof support has two sole-sliding elements, a bridge element connecting the sole-sliding elements with one another at the mine face ends of the latter, a roof supporting element supported on the sole-sliding elements, props supporting the roof supporting element on the sole-sliding elements, a displacing arrangement for displacing the sole-sliding elements and connected with the bride element, a guiding arrangement located between the sole-sliding elements and including two laterally spaced guiding rods connected at their mine face ends with a support element and at their backfilling ends with the bridge element via displacing arrangement, wherein a carriage is positively incorporated between the guiding rods of the guiding arrangement. The carriage carries a cylinder-and-piston unit which connects the carriage with the guiding arrangement at the backfilling end of the latter. The carriage also has a coupling member which extends in backfilling direction and connects the carriage with the displacing means at the backfilling end of the latter.

REFERENCES:
patent: 3143862 (1964-08-01), Cowlishaw
patent: 3240022 (1966-03-01), Mills et al.
patent: 3466875 (1969-09-01), Groetschel
patent: 3812681 (1974-05-01), Allen
patent: 4231685 (1980-11-01), Rosenberg et al.

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