【正文】 ...................................................... 12 底座長度的確定 ...................................................... 12 頂梁長度的確定 ................................................................ 13 頂梁的長度計(jì)算 ...................................................... 13 頂梁寬度 ................................................................. 14 頂梁覆蓋率 ............................................................. 14 立柱位置的確定 ................................................................. 15 支架立柱數(shù)的確定 .................................................. 15 支撐方式 ................................................................. 16 立柱間距 ................................................................. 16 IV 立柱柱窩位置的確定 ............................................... 16 第 4 章 液壓支架的部件結(jié)構(gòu)設(shè)計(jì) ................................................. 17 頂梁 ................................................................................... 17 立柱 ................................................................................... 17 掩護(hù)梁 ............................................................................... 17 四連桿機(jī)構(gòu) ........................................................................ 18 四連桿機(jī)構(gòu)的作用 .................................................. 18 四連桿機(jī)構(gòu)的幾何特征 ........................................... 18 用幾何作圖法來設(shè)計(jì)四連桿機(jī)構(gòu) ............................ 19 底座 ................................................................................... 23 側(cè)護(hù)板 ............................................................................... 23 千斤頂 ............................................................................... 24 推移千斤頂 ............................................................. 24 側(cè)推千斤頂 ............................................................. 24 前梁千斤頂 ............................................................. 24 護(hù)幫千斤頂 .............................................................. 24 后推移輸送機(jī)千斤頂 ............................................... 25 放煤機(jī)構(gòu)設(shè)計(jì) .................................................................... 26 第 5 章 液壓支架受力分析 ............................................................ 27 液壓支架基本技術(shù)參數(shù)的確定 ........................................... 27 支護(hù)強(qiáng)度 .................................................................. 27 初撐力 ...................................................................... 27 移駕力和推溜力 ...................................................... 28 支柱及相關(guān)液壓系統(tǒng)參數(shù)確定 ................................ 28 液壓支架立柱強(qiáng)度驗(yàn)算 ..................................................... 31 已知參數(shù) .................................................................. 31 油缸穩(wěn)定性計(jì)算 ....................................................... 32 活塞桿的強(qiáng)度計(jì)算 ................................................... 33 缸體的強(qiáng)度驗(yàn)算 ...................................................... 37 液壓支架主要技術(shù)參數(shù) ............................................ 37 液壓支架受力分析 ............................................................. 38 支 架整體受力分析 ................................................... 40 前梁受力分析 .......................................................... 41 頂梁受力分析 .......................................................... 41 掩護(hù)梁受力分析 ...................................................... 43 V 支架底座受力分析 .................................................. 44 第 6 章 支架強(qiáng)度計(jì)算 ..................................................................... 47 強(qiáng)度條件 ............................................................................ 47 液壓支架的強(qiáng)度校核 ......................................................... 49 前梁梁 強(qiáng)度校核 ....................................................... 49 頂梁強(qiáng)度校核 ........................................................... 53 底座的強(qiáng)度校核 ...................................................... 59 掩護(hù)梁的強(qiáng)度校核 ................................................... 65 結(jié) 論 ............................................................................................. 72 致 謝 ............................................................................................. 73 參考文獻(xiàn) ......................................................................................... 74 CONTENTS Abstract ........................................................................................... II The introduction chapte r 1 ............................................................... 1 advantages and disadvantages of the caving fully mechanized method ............................................................................ 1 development history of the caving hydraulic support ......... 1 basic characteristics of the caving hydraulic support structure ............................................................................................. 2 VI The classification of the caving hydraulic support .................. 2 caving hydraulic support use conditions and applicable scope .................................................................................................. 3 The caving hydraulic support conditions of use .............. 3 The caving hydraulic support scope ............................... 3 Ove rall design of bracket of chapter 2 ............................................. 4 Design task ............................................................................ 4 S upport structure design ......................................................... 4 In the four connecting rod caving hydraulic support ....... 4 C hiang kai shek fourbar low caving hydraulic support .. 5 In the four connecting rod caving hydraulic support low 6 Chapter 3, the ove rall structure size of the hydraulic support design .............................................................................................. 99 Th