zz4000型支撐掩護(hù)式液壓支架設(shè)計(jì)-zz4000型支撐掩護(hù)式液壓支架設(shè)計(jì)目錄1概述51.1液壓支架的組成和分類51.2液壓支架的工作原理81.3液壓支架的支護(hù)方式111.4支架選型的基本參數(shù)122總體設(shè)計(jì)142.1選架型142.2液壓支架基本參數(shù)的確定162.3采煤機(jī)、液壓支架和輸送機(jī)的配套192.4四連桿機(jī)構(gòu)設(shè)計(jì)212.5頂梁長度的確定282.6立柱及柱窩位置的確定292.7平衡千斤頂位置的確定332.8其它千斤頂位置的確定363支架的受力計(jì)算393.1液壓支架受力分析393.2確定支架的支護(hù)強(qiáng)度403.3底座接觸比壓計(jì)算403.4支架支護(hù)效率404液壓支架的主要部件的設(shè)計(jì)424.1前梁434.2主頂梁434.3掩護(hù)梁444.4前、后連桿454.5底座454.6立柱464.7千斤頂475主要零、部件的強(qiáng)度校核495.1校核的基本要求495.2前梁的校核505.3主頂梁的校核525.4掩護(hù)梁的強(qiáng)度校核555.5底座強(qiáng)度校核575.6銷軸和耳座的強(qiáng)度校核59zz4000型支撐掩護(hù)式液壓支架設(shè)計(jì)-5.7立柱強(qiáng)度校核626液壓系統(tǒng)設(shè)計(jì)686.1液壓支架的液壓系統(tǒng)的簡介686.2液壓支架的液壓系統(tǒng)擬訂696.3液壓元件的選取716.4液壓控制系統(tǒng)72結(jié)束語76參考文獻(xiàn)77摘要本論文主要闡述了一般掩護(hù)式液壓支架的設(shè)計(jì)過程。設(shè)計(jì)內(nèi)容包括：選架型、總體設(shè)計(jì)、主要零部件的設(shè)計(jì)、主要零部件的校核和液壓系統(tǒng)的設(shè)計(jì)。由于該煤層厚度適中，選用掩護(hù)式液壓支架。煤層厚度介于m8.35.2之間，煤層厚度變化較大，選用調(diào)高范圍大且抗水平推力強(qiáng)且?guī)ёo(hù)幫裝置的掩護(hù)式支架。支架采用正四連桿機(jī)構(gòu)，以改善支架受力狀況。頂梁、掩護(hù)梁、底座均做成箱體結(jié)構(gòu)；立柱采用雙伸縮作用液壓缸，以增加工作行程來滿足支架調(diào)高范圍的需要。推移千斤頂采用框架結(jié)構(gòu)，以減少推溜力和增大移架力。為了提高移架速度，確保對頂板的及時(shí)支護(hù)，采用錐閥液壓系統(tǒng)。關(guān)鍵詞：液壓支架液壓四連桿機(jī)構(gòu)采煤支架選型推溜移架zz4000型支撐掩護(hù)式液壓支架設(shè)計(jì)-AbstractThearticlemainlyelaboratedthegeneralshieldtypehydraulicpressuresupportdesignprocess.Thedesigncontentincludes:Chooses,thesystemdesign,themainsparepartdesign,themainsparepartexaminationandthehydraulicsystemdesign.Becausethiscoalbedthicknessismoderate,selectstheshieldtypehydraulicpressuresupport.Coalbedthicknessissituatedbetweenbetweenthe2.53.8rice,coalbedthicknesschangebigger,selectsadjuststhehighscopebigalsotheanti-horizontalthrustisstrongalsothebeltprotectshelpstheequipmenttheshieldtypesupport.Thesupportusesthefourlinkmotiongear,improvesthesupportstresscondition.Thetop-beam,cavingshield,thefoundationmakesthepackedinaboxbodystructure；Thecolumnusesthedoubleexpansionandcontractionfunctionhydrauliccylinder,increasesthepowerstroketosatisfythesupporttoadjustthehighscopetheneed.Passesthehoistingjacktousetheportalframeconstruction,reducespushesslidesthestrengthandincreasesmovesastrength.Inordertoenhancemovesaspeed,guaranteesisprompttotheroofsupport,usesthemushroomvalvehydraulicsystem.-Keyword:Thehydraulicpressuresupport,hydraulicpressure,four-linkme