ZY8600-25-50掩护式液压支架设计说明书.doc

第1页目录1绪论11.1液压支架的用途········································································51.2液压支架的工作原理····································································51.3设计事项·················································································61.3.1设计目的·········································································61.3.2对液压支架的基本要求························································71.3.3设计液压支架必需的基本参数················································81.4液压支架的分类········································································81.5液压支架的组成········································································91.6液压支架的主要结构件及其用途····················································101.6.1顶梁··············································································101.6.2底座··············································································101.6.3掩护梁···········································································101.6.4活动侧护板·····································································101.6.5连杆··············································································111.7液压支架的液压系统··································································111.7.1液压支架传动系统的基本要求···············································111.7.2液压支架的液压传动特点·····················································111.8液压支架的选型·······································································122液压支架的结构设计102.1液压支架的主要尺寸的确定·························································142.1.1支架高度和伸缩比·····························································142.1.2支架间距········································································142.1.3底座长度········································································152.1.4顶梁长度的确定································································152.1.5立柱布置········································································162.1.6通风断面的计算································································172.2各部件结构选择·······································································182.2.1顶梁··············································································182.2.2底座··············································································202.2.3立柱··············································································212.2.4推移装置········································································232.2.5护帮千斤顶·····································································262.3四连杆结构·············································································262.3.1四连杆机构的作用·····························································262.3.2四连杆机构设计的要求·······················································272.3.3四连杆机构的设计·····························································282.4液压支架的主要技术参数·····························································37第2页3液压系统363.1立柱和千斤顶··········································································403.2支架液压阀·············································································413.2.1液控单向阀·····································································413.2.2安全阀···········································································423.2.3操纵阀···········································································423.2.4液压支架液压阀的密封技术分析············································433.3液压支架液压原理图··································································443.4液压支架的控制方式··································································453.4.1手动控制········································································453.4.2自动控制········································································453.5液压系统安装、调试、保养·························································463.5.1安装：···········································································463.5.2调试：···········································································543.5.3保养：···········································································554液压支架的受力分析与校核534.1液压支架的支护性能与外载荷·······················································574.2液压支架基本技术参数的确定·······················································584.2.1支护面积········································································584.2.2支护强度········································································584.2.3确定立柱的技术参数··························································594.2.4立柱的初撑力···································································604.3立柱强度和稳定性验算································································604.3.1立柱缸体强度验算······························································604.3.2立柱稳定性验算································································624.3.3立柱活塞杆强度验算···························································644.4平衡千斤顶强度校核··································································665液压支架的发展趋势64结论66参考文献.67致谢68附录69摘要掩护式支架作为上世纪70年代初刚出现的产品，其显著特征是在顶梁第3页末端和底座之间附加有掩护梁。掩护梁一般是倾斜的，铰接在顶梁和底座之间。从运动学讲，它是稳定的，这是掩护式支架最优于框式支架和垛式支架的一点，掩护梁也完全封闭了采空区，从而能够防止破碎顶板岩石掉入支撑工作面。因此，一般来说，掩护式支架的支撑工作面是较清洁的。本文主要介绍了：液压支架的发展历程及发展趋势；液压支架的组成、作用和分类；液压支架的液压控制系统；液压支架设计的一般步骤；液压支架的操纵、维护、故障分析及处理等。在ZY8600型液压支架的设计过程中，着重对顶梁、底座和立柱进行了分析和设计，同时对液压支架的液压系统进行了介绍。根据其常见失效形式、影响因素及基本设计要求，给出了重要结构件的受力分析、强度和刚度的设计方法。在该支架的四连杆机构设计中，采用了计算机求解。对立柱和平衡千斤顶进行了强度和稳定性效核。关键词：液压支架、ZY8600、掩护式、结构设计、采煤机械ABSTRACTStandcoverofthelastcenturyastheearly1970semergingproducts,the第4页notablefeaturesofthetopbeambetweentheterminalandthebaseofattachingashield.Coverisgenerallyinclinedbeams,thehingedroofbeamsandbetweenthebase.Kinematicsfromthespeakers,itisstable,whichistheoptimalshieldinthebox-stentandthestentCrib1:00,Leungalsocoverisclosedgoaf,soastopreventtherockintothebrokenroofsupportFace.Therefore,ingeneral,coverStandFacethesupportofthecleaner.Thispaperdescribes:hydraulicsupportsthedevelopmentprocessanddevelopmenttrends；Hydraulicsupportthecomposition,roleandclassification；hydraulicsupportsthehydrauliccontrolsystem；hydraulicsupportsthegeneraldesignsteps；hydraulicsupportsmanipulation,maintenance,Faultanalysisandprocessing.InZY8600-hydraulicsupportthedesignprocess,focusingonthetopbeamandcolumnbaseandtheanalysisanddesignMeanwhilehydraulicsupportstherighthydraulicsystemwasintroduced.Accordingtotheircommonfailuremode,influencingfactorsandbasicdesignrequirements,isanimportantstructuretheforce.Strengthandstiffnessofthedesignmethod.Thestentinthefour-barlinkagedesign,usingacomputertosolve.ColumnrightbalancebetweenJackandthestrengthandstabilityofnuclearefficiency.Keywords:hydraulicsupport,ZY8600,shield,structuraldesign,mechanicalmining