论文部分内容阅读
近几年来,为适应采煤综合机械化的发展需要,液压支架获得了迅速的发展,出现了很多类型,据统计,它的结构形势已达数百种。每种支架的支柱从1根到8根,支撑力从50吨到800吨,支架适应煤层厚度的范围由0.6米到5米,也以至更厚的煤层,适应煤层倾角由0°到45°,甚至70°左右。在缓倾斜薄及中后煤层中,液压支架已获得广泛的应用,但是由于煤层赋存条件复杂,支架的结构还不够完善,设备需要管理和操作经验还不够全面,所以液压支架的使用范围仍受到限制。
In recent years, to meet the needs of the development of comprehensive coal mechanization, the hydraulic support has gained rapid development and many types have appeared. According to statistics, its structural situation has reached hundreds. The pillars of each bracket range from 1 to 8 with support forces ranging from 50 to 800 tons and the brackets adapt to seam thicknesses ranging from 0.6 to 5 meters and thicker coal seams to accommodate dip angles from 0 ° to 45 ° , Or even 70 ° or so. Hydraulic brackets have been widely used in the gently inclined thin and medium coal seams. However, due to the complex conditions of the coal seams, the structure of the brackets is still not perfect, and the management and operation experience of the equipment is not comprehensive enough. Therefore, the use range of the hydraulic brackets restricted.