AGGREGATE ROADWAY SUPPORT Russian patent published in 1994 - IPC

FIELD: mining. SUBSTANCE: aggregate roadway support has extreme front and extreme rear units successively connected by rams. Units have bases with stops connected with hydraulic props by clamps, roofing of cross-pieces and cappings attached to cross-pieces at sides of roofing, and longitudinal beams installed between cappings and secured to cross-pieces. Installed in extreme front and rear linear units are two longitudinal beams at distance of width of one longitudinal beam from cappings. Installed in extreme rear and front linear units are two longitudinal beams near cappings, and one longitudinal beam is installed in middle linear unit along unit longitudinal axis. Length of each longitudinal beam is three times as much as length of capping. Hinged beams of different heights may be attached to longitudinal beams to be inscribed into working outline. EFFECT: higher efficiency. 2 cl, 5 dwg