放顶煤液压支架设计.doc

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及液压系统设计。 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。支架采用四连杆机构，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。立柱采用单伸缩液压缸，前端带有加长杆，以满足支架最低及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研究，确定合理的液压支架受力参数、运动参数和结构参数，以及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  ABSTRACT The 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 the dint parameter, the sport parameter and the structure parameters, and make selection the liquid to press the synthetic science technique problem of aspect of etc. of the best project of support. Keyword: Hydraulic pressure support Top beam Cradle the column-type support structure design 目 录 摘 要 I ABSTRACT II 前 言 1 1液压支架的概述 2 1.1液压支架的发展概况 2 1.1.1液压支架使用现状 2 1.1.2液压支架的发展趋势 2 1.1.3我国液压支架的状况 4 1.2本课题的研究目的和意义 5 2液压支架基本理论分析 6 2.1 液压支架的工作原理 6 2.1.1支架推移 7 2.1.2 支架升降 7 2.1.3 支架承载过程 7 2.2 液压支架的类型和结构 9 2.2.1 掩护式支架 9 2.2.2 支撑式支架 10 2.2.3 支撑掩护式支架 10 2.2.4 特种液压支架 11 2.3 对液压支架的基本要求 11 2.4支架的选型设计 12 2.4.1设计的原始条件 12 2.4.2支架的支护性能