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1、华北科学院毕业设计（论文）摘要在采煤工作面煤炭生产过程中，为了防止顶板冒落，维持一定的工作空间，保证工人安全和各项工作的正常运行，必须对顶板进行支护。而液压支架是以高压液体用为动力，由液压元件与金属构件组成支护控制顶板的设备，它能实现支撑、切顶、移架和推移输送机等一整套工序，实践表明液压支架具有支护性能好、强度高、移架速度快，安全可靠等优点。液压支架与可弯曲输送机和采煤炭机组成综合机械化采煤设备，它的应用对增加采煤工作面产量、提高劳动生产率，降低成本，减轻工人体力劳动和保证安全生产是不可缺少的有效措施。因此液压支架是技术上先进，经济上合理，安全上可靠、是实现采煤综合
2、机械自动化不可缺少的主要设备。我所做的设计是液压支架总体设计和主要部件设计，本设计首先对液压支架整体和零部件结构进行分析，对液压支架结构尺寸进行综合分析，再对液压支架进行受力分析和强度计算。重点是对液压支架顶梁的受力分析和计算；用计算机计算液压支架受力；对顶梁、掩护梁、立柱进行强度校核。通过设计对液压支架整体和主要部件有了清楚的认识，掌握了用CAD绘图的技巧。关键词：液压支架；支护性能；采煤设备-99-华北科学院毕业设计（论文）AbstractInthecoalfaceCoalproductioninthecoalface，Inordertopreventthero
3、offallingmaintainacertainroomtowork，ensuretheworkerssafety，andthenormaloperationofallthework,mustbecarriedoutontheroofsupport.Butthestentisahigh-pressurehydraulicfluidusedasadrivingforce,thesupportingtheroofcontrolequipmentiscomposedofhydrauliccomponentsandmetalstructures,itcanrealizet
4、hesupport,cuttingthetop,andshift-overconveyor,andsoonasetofprocesses,practiceshowsthatthehydraulicsupportagoodsupportingperformance,high-intensity,fast-shifting,theadvantagesofsafeandreliable.Hydraulicsupportandflexibleconveyorandcoal-miningmechanizationofintegratedcoalminingequipmenti
5、tsapplicationbythecoalface-production,raisinglaborproductivity,lowercosts,reducemanualworkersandguaranteesafeproductionisindispensableforeffectivemeasures.Thereforehydraulicsupportistechnicallyadvancedandeconomicallyrational,security,reliability,istoachievecomprehensiveminingmachinerya
6、utomationindispensableformajorequipment.ThetopicofthisdesignisTheOverallDesignfortheSupportandSupportCoverHydraulicSupportAndtheDesignfortheMajorParts.Inthedesign,firstofall，Ianalysisedoverallofhydraulicsupport,structureandstructuresizeoftheparts.ThenIanalysisedstressandcalculatedinten
7、sity.ThemostimportantwasthatIanalysisedandCalculatedtheforceofTopbeam;CalculatedthefoeceofhydraulicsupportbyComputerprogram;checkedtheintensityoftopbeam,beamcoverandcolumn.TherewasaclearunderstandingoftheoverallHydraulicSupportandthemajorpartsthroughthedesign.Masteredthetechniquesoft
