| 摘要 |
FIELD: mining industry. ^ SUBSTANCE: said complex incorporates support units, which consist of props, a canopy, and a shiled connected by means of beams with base rear bracket. The base is common for a support unit and has a front bracket in the symmetry plane of the unit, where motive jack, as well as a sectional guide, which consists of two pivot beams and three pivot points, are located. The front pivot point of the front beam is connected to pan line, and pins of all three pivot points are parallel to soil surface and face surface. The sectional guide rear beam rear pivot point is secured in the base rear bracket area, the motive jack is located in front of the middle pivot point of the sectional guide and its rear end is connected to the rear beam of the sectional guide over its middle pivot point, while the front end is connected to the base front bracket. ^ EFFECT: highly-efficient manless coal mining in working face for sloping and steep beds. ^ 1 dwg |
