中文題目：低位放頂煤液壓支架總體設(shè)計外文題目：THE OVERALL DESIGN OF LOW CAVING COAL HYDRAULIC SUPPORT 畢業(yè)設(shè)計（設(shè)計）共 78 頁（其中：外文文獻(xiàn)及譯文 28 頁）圖紙共 4 張I摘要高產(chǎn)高效已是當(dāng)今煤礦生產(chǎn)追求的目標(biāo)，而高可靠性放頂煤液壓支架的研制是高產(chǎn)高效目標(biāo)能否實現(xiàn)的關(guān)鍵之一，采煤綜合機(jī)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(jī)械化綜采工作面不可缺少的支護(hù)設(shè)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(shè)計介紹了低位放頂煤液壓支架的結(jié)構(gòu)、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(shè)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(shè)計出適合的結(jié)構(gòu)形式，最后對立柱，頂梁，掩護(hù)梁和底座進(jìn)行了強(qiáng)度校核計算。關(guān)鍵詞：放頂煤；液壓支架；支護(hù) 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(shè)計任務(wù) ...........................................................................................................................32 低位放頂煤液壓支架結(jié)構(gòu)參數(shù)設(shè)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(jié)構(gòu)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(fēng)斷面的計算 ......................................................................................................112.3 四連桿機(jī)構(gòu)的確定 ......................................................................................................122.3.1 四連桿機(jī)構(gòu)的幾何特征 ........................................................................................122.3.2 四連桿機(jī)構(gòu)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(jié)構(gòu)選擇 ...........................................................................................................172.6.1 頂梁 ..............................................................................................................................172.6.2 立柱 ..............................................................................................................................182.6.3 底座 ..............................................................................................................................192.6.4 側(cè)護(hù)板 .........................................................................................................................192.6.5 千斤頂 .........................................................................................................................203 液壓支架的強(qiáng)度受力分析及強(qiáng)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(hù)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(qiáng)度計算 ..................................................................................................313.4.1 強(qiáng)度條件 ....................................................................................................................313.4.2 主頂梁強(qiáng)度校核 ......................................................................................................333.4.3 底座強(qiáng)度校核 ...........................................................................................................383.4.4 掩護(hù)梁的強(qiáng)度校核 ..................................................................................................424 液壓支架的液壓系統(tǒng) ......................................................................................................475 結(jié)論 .......................................................................................................................................48致謝 ..............................................................................................................................................494參考文獻(xiàn) .....................................................................................................................................50附錄 A...........................................................................................................................................51附錄 B...........................................................................................................................................63