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ＺＦＳ４４００／１７／３２Ｂ型低位放顶煤液压支架在北京研制成功由北京煤矿机械厂研制成功的ＺＦＳ４４００／１７／３２Ｂ型低位放顶煤液压支架经过地面试验后，发往淮南矿务局。该型液压支架工作阻力４４００ｋＮ，动撑力４１５４ｋＮ，推移步距为６００ｍｍ，升起最...
ZFS4400 / 17 / 32B low caving hydraulic support was successfully developed in Beijing ZFS4400 / 17 / 32B low caving hydraulic support developed by Beijing Coal Mine Machinery Factory was tested on the ground and sent to Huainan Mining Bureau. This type of hydraulic support work resistance 4400kN, dynamic support force 4154kN, pushing step is 600mm, rising most ...