| 摘要 |
FIELD: mining industry. ^ SUBSTANCE: section has interconnected supporting and outlet portions. Supporting portion has U-shaped base, hydraulic posts, on upper portion of bodies thereof a case is fixed, in form of guiding constructions for correcting position of outlet portion cover. Cover of supporting section portion is a rigid frame having inside guiding hollows of face cutter and cave-in extending shield, which are controlled by hydraulic jacks. At upper cover portion of supporting portion loosening knives are placed. Output portion has T-shaped base, which connects to base of supporting portion by hydraulic jack along symmetry axis, hydraulic posts, arced cover, which by its front edge always lies on case guides. Cover has port for coal output. ^ EFFECT: higher safety, higher efficiency and higher reliability. ^ 1 dwg |
