大采高液压支架设计.doc

中文题目： 外文题目： 毕业设计（论文）共 页（其中：外文文献及译文 页）图纸共 张 完成日期201年6月 答辩日期015年6月 Abstract Topic of this paper is 8.9 m one-time mining overall height hydraulic supports the overall design. Hydraulic support as coalface important support equipment, in the work process can achieve good supporting effect, depending on the stand of the frame type, structure and related parameters. With practice, this paper will design a support Shendong height of 8.9 meters of large mining height hydraulic support. Design is first calculated, analyzed and compared to determine the roof beams, hydraulic support base and other basic dimensions, and then optimize the four-bar linkage design do figure geometric method to determine the length of each stand four-bar linkage rod system, after preferably, each member, sketch, stress analysis, and checking the strength. Finalize the hydraulic model to determine the bracket supporting devices, assembly drawing and part drawing. In the completion of the design process, the use of theoretical analysis, but also with a lot of practical experience, so that the combination of theory and practice. Key words: cover timbering; 8.9 meters large mining height are broken; The four connecting rod; Pillar; Optimization design; The intensity 目录 1 绪论 1 1.1 项目立项的背景 1 1.2 国内外概况、水平及发展趋势 2 1.3 液压支架的设计目的、要求和基本参数 3 1.3.1 设计目的 3 1.3.2 对液压支架的基本要求 4 1.3.3 设计液压支架必需的基本参数 4 1.4本章小结 4 2 液压支架的总体设计 5 2.1 架型确定 5 2.2 液压支架基本技术参数的确定 5 2.2.1 支护高度 5 2.2.2 支架伸缩比 6 2.2.3 支架中心距的确定 6 2.2.4 底座主要尺寸的确定 6 2.3 四连杆机构的设计 7 2.3.1 四连杆机构的作用 7 2.3.2 掩护梁和后连杆长度的确定 9 2.3.3 几何作图法作图过程 10 2.4 顶梁主要尺寸的确定 12 2.4.1 掩护式顶梁长度的计算 12 2.4.2 顶梁面积 13 2.4.3 支架的支护面积 13 2.4.4 顶板覆盖率 13 2.5 立柱位置的确定 14 2.5.1 立柱布置 14 2.5.2 立柱柱窝位置的确定 14 2.6 本章小结 17 3 液压支架的部件结构设计 18 3.1 顶梁 18 3.2 底座 19 3.3 立柱 20 3.4 千斤顶 22 3.4.1 推移千斤顶 22 3.4.2 平衡千斤顶 22 3.5 侧护板 22 3.5.1侧护装置作用 22 3.5.2 顶梁和掩护梁的侧护板种类选择 22 3.6 本章小结 23 4 液压支架基本技术参数 24 4.1 液压支架基本技术参数的确定 24 4.1.1 支护强度确定 24 4.1.2 支架的理论支护阻力 24 4.1.3 初撑力 25 4.1.4 移架力和推溜力 25 4.2 支柱及相关液压系统参数确定 25 4.2.1