河南理工大学万方科技学院毕业设计（论文）PAGEIPAGE\*MERGEFORMATI放顶煤液压支架摘要本课题主要论述了液压支架的主要设计过程。其中包括：液压支架的选型、总体设计、主要零部件的设计以及液压系统设计。支架的形式为掩护式支架。支架除了要有效的对顶板进行支撑外，还要实现升、降、推、移几个步骤。支架采用四连杆机构，改善支架的受力状况，缩小支架的升降过程中顶梁前端前后移动的距离。立柱采用单伸缩液压缸，前端带有加长杆，以满足支架最低及最高位置时的高度要求。顶梁掩护梁、底座都做成箱体结构用钢板焊接而成。在研制液压支架时，需要对支架进行生产试验和分析研究，确定合理的液压支架受力参数、运动参数和结构参数，以及选定液压支架最佳方案等方面综合性的科学技术问题。关键词：液压支架顶梁底座立柱结构设计PAGE\*MERGEFORMATIIABSTRACTThearticlemainlyelaboratethehydraulicsupportdesignfortop-caving.including:theselectionofhydraulicpressuresupportform,systemdesign,mainsparpartdesignandexaminationofhydraulicsystemdesign.Thesupporteliminatesmustrealizeeffectivelycarriesonthestruttotheroof,butalsomustrealize,tofall,topush,movefoursteps.thesupportusesfourlinkmotiongears,improvesthesupportthestresscondition,reducesthesupporttoriseandfullthedistancewhichintheprocessfortendthetop-beamaroundmoves.Thecolumnusesthelistexpansionandcontractionhydrauliccylinder,frontendhaslegthenthepole,satisfiesthesupporttobelowestandtimethehighestpositionhighrequest.Thetop-beam,shieldsLiang,thefoundationallmakesthepackedinaboxbodystructure,becomeswiththesteelplatewelding.Atresearchtopressesthesupport,needtocarryonproducetoexperimentandanalyzetheresearch,makesurereasonableofliquidpressesthesupporttobesubjectedtothedintparameter,thesportparameterandthestructureparameters,andmakeselectiontheliquidtopressthesyntheticsciencetechniqueproblemofaspectofetc.ofthebestprojectofsupport.Keyword:HydraulicpressuresupportTopbeamCradlethecolumn-typesupportstructuredesignPAGE\*MERGEFORMATIV目录TOC\o"1-3"\h\uHYPERLINK\l_Toc19422摘要PAGEREF_Toc19422IHYPERLINK\l_Toc26008ABSTRACTPAGEREF_Toc26008IIHYPERLINK\l_Toc23126前言PAGEREF_Toc231261HYPERLINK\l_Toc168391液压支架的概述PAGEREF_Toc168392HYPERLINK\l_Toc225621.1液压支架的发展概况PAGEREF_Toc225622HYPERLINK\l_Toc56281.1.1液压支架使用现状PAGEREF_Toc56282HYPERLINK\l_Toc258251.1.2液压支架的发展趋势PAGEREF_Toc258252HYPERLINK\l_Toc320671.1.3我国液压支架的状况PAGEREF_Toc3206