POWERED SUPPORT FOR STEEP BEDS Russian patent published in 2012 - IPC E21D23/00 F16L29/04 

FIELD: mining.

SUBSTANCE: powered support includes linear sections, bottom-hole enclosure and rock-dammed enclosure with hydraulic props of stay brace and correction jacks. At that, each linear section consists of hydraulic prop with capping and support plate, capsule of machine compartment, roller bearing and shoe. Roller bearing is made in the form of hollow metal ball arranged in cylindrical cavity of the shoe and hold-down stock with shock absorber through which the weight of unloaded section is transferred to the ball. At that, ball of roller bearing, hold-down stock and wall of cylindrical cavity of the shoe are covered with diamond film with friction coefficient of 0.05-0.001.

EFFECT: improving stability and movability of support, and reducing metal consumption for support.

3 dwg