中文題目：低位放頂煤液壓支架總體設計外文題目：THE OVERALL DESIGN OF LOW CAVING COAL HYDRAULIC SUPPORT 畢業(yè)設計（設計）共 78 頁（其中：外文文獻及譯文 28 頁）圖紙共 4 張I摘要高產(chǎn)高效已是當今煤礦生產(chǎn)追求的目標，而高可靠性放頂煤液壓支架的研制是高產(chǎn)高效目標能否實現(xiàn)的關鍵之一，采煤綜合機械化，是加速我國煤炭工業(yè)發(fā)展，大幅度提高勞動生產(chǎn)率，實現(xiàn)煤炭工業(yè)現(xiàn)代化的一項戰(zhàn)略措施。放頂煤液壓支架是綜合機械化綜采工作面不可缺少的支護設備之一，其性能的好壞直接影響采煤工作面以及工作人員的安全。本設計介紹了低位放頂煤液壓支架的結構、類型、工作原理，對低位放頂煤液壓支架作了詳盡的分析和介紹，講述了這種支架的設計方案和用途。通過對現(xiàn)有低位放頂煤液壓支架的分析，優(yōu)勢對比，設計出適合的結構形式，最后對立柱，頂梁，掩護梁和底座進行了強度校核計算。關鍵詞：放頂煤；液壓支架；支護 IIABSTRACTFor the reason of the manufacture of high dependability dropping top coal hydraulic powered support is one key of whether the high yield and high efficiency-which is the collieries pursue today-can achieve, The comprehensive mechanization of coal mining is the acceleration coal industrial development of our country , raises labor productivity substantially, realizes the modern a strategic measure of coal industry. The caving hydraulic support is one of the most indispensable support equipment in the full mechanization coal mining face. Its performance will impact the safety of the comprehensive mechanization coal mining face and the staff.This paper has introduced requirement, type, working principle, characteristic, purpose and the structure of laying down top coal hydraulic support, for screening type Low caving coal hydraulic support have made detailed analysis and introduction, have narrated use and the scheme of this kind of support. Through the existing low-level caving hydraulic support analysis, advantages compared to design a suitable structure , the last of columns , roof beams, beam shield , the base for the strength check calculation ,Key words ： laying down top coal ； hydraulic support ；support2目錄1 緒論 .........................................................................................................................................11.1 低位放頂煤液壓支架簡介 ..........................................................................................11.1.1 研究現(xiàn)狀與發(fā)展趨勢 ...............................................................................................11.1.2 分類及特點 ..................................................................................................................11.2 液壓支架的工作原理 ....................................................................................................21.3 低位放頂煤液壓支架適的適用條件 ........................................................................31.4 設計任務 ...........................................................................................................................32 低位放頂煤液壓支架結構參數(shù)設計 ............................................................................42.1 低位放頂煤液壓支架架型的選擇 ............................................................................42.2 液壓支架主要結構參數(shù)和形式的確定 ...................................................................42.2.1 支架的高度和支架的伸縮比 ................................................................................42.2.2 支架間距和寬度的確定 ..........................................................................................52.2.3 梁端距和頂梁長度的確定 ......................................................................................62.2.4 立柱和千斤頂?shù)拇_定 ...............................................................................................72.2.5 通風斷面的計算 ......................................................................................................112.3 四連桿機構的確定 ......................................................................................................122.3.1 四連桿機構的幾何特征 ........................................................................................122.3.2 四連桿機構的幾何作圖法 ....................................................................................132.4 底座長度確定 ................................................................................................................172.5 液壓支架性能參數(shù)的確定 ........................................................................................1732.6 各部件結構選擇 ...........................................................................................................172.6.1 頂梁 ..............................................................................................................................172.6.2 立柱 ..............................................................................................................................182.6.3 底座 ..............................................................................................................................192.6.4 側護板 .........................................................................................................................192.6.5 千斤頂 .........................................................................................................................203 液壓支架的強度受力分析及強度校核 ......................................................................213.1 液壓支架的受力分析與計算 ....................................................................................213.1.1 支架整體受力分析 ..................................................................................................223.1.2 頂梁的受力分析與計算 ........................................................................................233.1.3 掩護梁的受力分析與計算 ....................................................................................253.1.4 底座的受力分析與計算 ........................................................................................273.2 頂梁載荷分布 ................................................................................................................283.3 底座接觸比壓 ................................................................................................................293.4 液壓支架的強度計算 ..................................................................................................313.4.1 強度條件 ....................................................................................................................313.4.2 主頂梁強度校核 ......................................................................................................333.4.3 底座強度校核 ...........................................................................................................383.4.4 掩護梁的強度校核 ..................................................................................................424 液壓支架的液壓系統(tǒng) ......................................................................................................475 結論 .......................................................................................................................................48致謝 ..............................................................................................................................................494參考文獻 .....................................................................................................................................50附錄 A...........................................................................................................................................51附錄 B...........................................................................................................................................63