放 顶 煤 液 压 支 架摘 要 本 课 题 主 要 论 述 了 液 压 支 架 的 主 要 设计过程。其中包括：液压支架的选型、总体设计、主要零部件的设计以与液压系 统 设 计 。支 架 的 形 式 为 掩 护 式 支 架 。 支 架 除 了要有效的对顶板进行支撑外，还要实现升、降、推、移几个步骤。支架采纳四连杆机构，改善支架的受力状况，缩小支架的升降过程中顶梁前端前后移动的距离。立柱采纳单伸缩液压缸，前端带有加长杆，以满足支架最低与最高位置时的高度要求。顶梁掩护梁、底座都做成 箱 体 结 构 用 钢 板 焊 接 而 成 。在 研 制 液 压 支 架 时 ， 需 要 对 支 架 进 行生产试验和分析讨论，确定合理的液压支架受力参数、运动参数和结构参数，以与选定液压支架最佳方案等方面综合性 的 科 学 技 术 问 题 。关 键 词 ： 液 压 支 架 顶 梁 底 座 立柱 结 构 设 计ABSTRACTThe article mainly elaborate the hydraulic support design for top-caving. including: the selection of hydraulic pressure support form, system design, main spar part design and examination of hydraulic system design.The support eliminates must realize effectively carries on the strut to the roof, but also must realize ,to fall, to push, move four steps .the support uses four link motion gears, improves the support the stress condition, reduces the support to rise and full the distance which in the process fort end the top-beam around moves. The column uses the list expansion and contraction hydraulic cylinder, front end has legthen the pole, satisfies the support to be lowest and time the highest position high request. The top-beam, shields Liang, the foundation all makes the packed in a box body structure, becomes with the steel plate welding.At research to presses the support, need to carry on produce to experiment and analyze the research, make sure reasonable of liquid presses the support to be subjected to th...
