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由北京煤机厂研制的Z ZP5100-17/3.5型支撑掩护式机械化铺网托架最近通过技术鉴定。该支架支撑高度1.7～3.5m,工作阻力5100kN,初撑力3941kN,支撑强度0.78MPa,适用于煤层倾角小于15°,金属网卷直径小于400mm。该支架是为适应兖州局鲍店煤矿Ⅲ级二类顶板条件而设计的,工业性试验期间,经受了老顶初期来压和周期性来压的考验,支柱安全阀开启率为85%,主要部件强度足够,设计参数合理,支架操纵阀带有初撑自
The Z ZP5100-17 / 3.5 type support screen type mechanized ladle bracket developed by Beijing Coal Machine Factory recently passed the technical appraisal. The support height of 1.7 ~ 3.5m, work resistance 5100kN, initial support force 3941kN, support strength 0.78MPa, suitable for coal seam inclination less than 15 °, the metal coil diameter less than 400mm. The bracket is designed to meet the requirements of Grade II and II of Yandian BaoDian Coal Mine. During the industrial test, the stent has withstood the initial pressure and periodic pressure of the old roof. The opening ratio of the valve is 85% Component strength is sufficient, the design parameters are reasonable, the stent control valve with the beginning of self-support