| 摘要 |
FIELD: mining. ^ SUBSTANCE: powered support for steep beds of medium thickness includes basic column separated into basic sections, every of which consists of front and goaf walls with hydraulic stands of stay brace and jacks of correction, and linear sections, every of which consists of hydraulic stand with beam and support slab, capsule - equipment compartment, roller supports and boot. Basements of front and back walls of basic section are separated into three telescopically joined parts with the possibility of their sliding by correction jacks, at the same time their middle parts are connected by means of cross bar, in slots of which there are roller support of linear section with the possibility of its displacement after unloading. ^ EFFECT: increased stability and improved displacement of support. ^ 2 cl, 3 dwg |
