【正文】 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 The basic requirement of the hydraulic support design and basic parameters ................................................................................. 9 The design of hydraulic support ..................................... 9 The design of hydraulic support basic requirements ....... 9 The parameters of the hyd raulic support ............................... 10 Bracket height ............................................................. 10 S tent expansion ratio ....................... 錯誤 !未定義書簽。 S tent spacing is determined .............. 錯誤 !未定義書簽。 3. determination of base length .................................. 12 Determination of top beam length ........................................ 13 3. The length of the top beam is calculated ...................... 13 3. Top beam width ........................................................... 14 3. Top beam coverage ...................................................... 14 column position .................................................................. 15 3. S tents, determine the number of columns ..................... 15 3. S trut way ..................................................................... 16 3. Column spacing ........................................................... 16 3. Column column nest position ....................................... 16 Chapter 4 of the hydraulic support parts structure design ........... 17 Top beam ............................................................................. 17 Column ................................................................................ 17 Cover beam .......................................................................... 17 VII The four bar linkage ............................................................. 18 4. role of the four bar linkage .................................... 18 4. geometrical characteristics o f the four bar linkage . 18 4. With geometric mapping method to design a four bar linkage ............................................................................................. 19 The base ............................................................................... 23 The side guard ...................................................................... 23 Jack ..................................................................................... 24 Goes on jack ................................................................ 24 S ide pushing jack ......................................................... 24 Before jack liang ......................................................... 24 P rotection to help jack ................................................. 24 After jack goes on conveyor ......................................... 25 Coal mechanis m design ........................................................ 26 Chapter 5 hydraul