| 摘要 |
FIELD: mining industry. ^ SUBSTANCE: support section has base, mounted on bed soil, ceiling with extending cover section, mounted near bed ceiling, support beam with drilling body, mounted in parallel to base and ceiling at level of middle line of section height and directed by executing drilling tool in direction of extracted coal massif, two hydraulic posts, directed along normal line to base, upper and lower walls mounted with possible mutual relative displacement, hydraulic jacks for displacement and hydraulic control crane, upper and lower semi-sections. Upper semi-section is placed higher along bed fall line. Lower semi-section is placed lower along bed falling line. Upper wall is jointly connected to ceiling. Lower wall is jointly connected to base. Upper and lower walls are interconnected with possible mutual angular displacements by a transverse beam. support beam is mounted between upper and lower semi-sections at distance, equal to two steps of displacement from dump edge. To side surfaces corbels are welded, one of which is directed upwardly along bed falling line, and another one - downwardly. To each corbel, jointly, with possible rotation, one end of hydraulic displacement jack is attached. Its other end is also jointly attached to transverse beam of appropriate semi-section. At length, equal to one step of support displacement, from dump edge to side surfaces of support beam, guides are welded. To closest hydraulic posts holders are jointly connected. Guides of support beam are inserted into holders of posts with possible mutual telescopic displacement along beam axis. Holder for upper semi-section post and appropriate guide of support beam are made in form of cylinders. Holder of lower semi-section post and appropriate guide of support beam are made on basis of special type shape. Two hydraulic jacks are mounted in inner space of lower semi-section base, directed along ascension, each of which is provided with distance roller. ^ EFFECT: higher efficiency. ^ 3 dwg |
