原煤层分层开采要铺设金属网假顶,以前的自动铺网工艺只适用于经纬网。晋城矿务局古书院矿在BC7A400—17/35铺网支架的基础上,研制了菱形网机械化铺网机构。该机构由钢性网筐,钢丝绳滑轮牵引装置,重锤胀紧装置组成。网筐安装在支架尾部,网通过出网槽和底板上的网联起来,支架前移时,网便自动展开并胀紧。 Layered mining of the original coal seam metal mesh roof should be laid, the previous automatic meshing process only applies to the latitude and longitude network. On the basis of the BC7A400-17 / 35 shop support, the Jincheng Mining Bureau Gushuyuan Mine developed a diamond mesh mechanization shop. The mechanism consists of steel net basket, wire rope pulley traction device, weight expansion device. Net basket installed in the tail of the bracket, the net through the slot and the net on the floor together, the stent forward, the net will automatically expand and tighten.