POWERED SUPPORT FOR STEEP BEDS Russian patent published in 2013 - IPC E21D23/00 

FIELD: mining.

SUBSTANCE: powered support comprises a support base, including a bottomhole and a goaf beams with barriers and spacer stands connected to each other with tails from a special profile, and linear sections, every of which has a beam, a shoe, an equipment compartment, and also elements of spacing, shifting and correction, at the same time the beam of the linear section is spaced with pneumatic cushions arranged on a convex shield, under which pneumatic stands are located, being rested against the shoe, to the body of which at both sides there are roller supports fixed as capable of movement in slots of the special profile of support base tails, on the shift and stabilisation unit there is a capsule of the equipment compartment, inside of which there is a manipulator with an extraction element of physical coal breaking. Each pneumatic stand comprises a polymer film pipe with stiffening ribs in the form of hoops, a sliding case, a beam, a shoe and a pedestal.

EFFECT: creation of a stable operable support for extraction of strong steep beds under rock pressure.

2 cl, 3 dwg