摘要
放顶煤液压支架是开采5～20m特厚煤层综合机械化采煤的主要支护设备。它的主要用途是把冒落的顶煤排放到支架后部的运输机上,支护顶板,维护一定的作业空间,推移运输机和移动支架等。它的性能好坏直接影响厚煤层采煤工作面的产量、效率和回收率,因而对它的要求比一般液压支架更高和更严格。近年来随着液压支架的发展,放顶煤液压支架也得到了很大发展。
-The main features of 6 types of powered support for soutirage mining ares long canopy; perfect coal drawing mechanism installed on the rear canopy; high support density;low floor contact pressure; excellent anti-flushing protection and sufficient longitudinal and lateral stability. How to select the major parameters for support used in China? The authors suggest: support density 50—70 tons/m^2; in the light of the working pressure of the pump and diameter of the leg, the setting load of the support being 63% of the yield load, height of the support matching MLS3-i70 shearer, 2—3m; push force of the conveyor 16.08 tons, pulling force 33.18 tons.
出处
《煤炭科学技术》
CAS
1983年第7期16-21,61,共7页
Coal Science and Technology
