搜索
I汽车起重机支腿液压系统设计摘要本设计在分析汽车起重机的功能、组成和工作特点的基础上，并结合国内外汽车起重机的运用现状和发展趋势，设计了一款中小吨位汽车起重机底盘支腿液压系统。在设计本机液压系统中，通过阅读大量国内外相关资料和调研市场上已存在产品，对中小吨位汽车起重机的功能和工作原理进行了深入的了解和分析，具体分析了汽车起重机液压系统的功能、组成、工作特点以及系统类型，总结出液压传动在汽车起重机应用中的优缺点。根据汽车起重机的工作特点对支腿液压系统进行典型工况分析，确定了液压系统要求；结合液压系统原理拟定支腿液压系统底盘分布图、支腿液压管路图。根据汽车起重机的技术参数对液压系统进行了设计计算，确定了液压系统元件；并结合支腿机构的主要参数对支腿机构强度校核与稳定性分析，对支腿回路的组成原理和性能进行分析；通过对系统压力损失的验算和发热校核，检验液压系统设计的合理性。关键词：汽车起重机；液压系统；支腿液压；设计计算IIHydraulicsystemdesignofOutriggeroftruckcraneABSTRACTThedesignanalysisoftruckcraneonthebasisofthefunctions,compositionandcharacteristicsofwork,applicationsituationanddevelopmenttrendofdomesticandinternationaltruckcrane,designedahydraulicsystemforsmallandmediumtonnagetruckcranechassislegs.Inthedesignofthehydraulicsystem,byreadingalotofrelevantinformationalreadyexistsonthemarketandresearchproductsathomeandabroad,forsmallandmediumtonnagetruckcranecapabilitiesandin-depthunderstandingandanalysisoftheworkingprinciple,specificanalysisofcranehydraulicsystemcharacteristicsandsystemfunctions,composition,worktype,summaryofadvantagesanddisadvantagesinapplicationofhydraulictruckcrane.Legsaccordingtothecharacteristicsoftruckcranehydraulicsystemanalysisoftypicalconditions,determinethehydraulicsystemrequirements;combinationofhydraulicsystemforhydraulicsystemdevelopedlegbasemap,thehydraulicsupportlegpipe.Accordingtothetechnicalparametersofthecraneonthedesignandcalculationofhydraulicsystems,hydraulicsystemcomponentswereidentifiedandcombinedwithlegmechanismofmainparametersonlegstrengthandstabilityanalysisofmechanism,compositiontheoryandperformanceanalysisofthelegloopsthroughtosystempressurelosscalculationandheatchecking,inspectionofhydraulicsystemdesignofrationality.KEYWORDS:TruckcraneHydraulicsystem,Outriggerhydraulic,DesigncalculationsIII目录前言...........................................................................................................1第1章液压系统在起重机上的应用.........................................................21.1汽车起重机简介.............................................................................21.2QY100K汽车起重机主要性能参数...............................................31.2.1行驶状态下的主要技术参数如下.....................................31.2.2作业状态参数.....................................................................31.2.3起重臂性能参数.................................................................31.2.4支腿技术参数......................................................................31.3液压系统的类型..........................................................................31.4液压传动应用于汽车起重机上的优缺点..................................41.4.1在起重机的结构和技术性能上的优点.............................41.4.2在经济上的优点.................................................................4第2章下车支腿的确定、支腿液压系统的设计.....................................62.2起重机支腿的选择..........................................................................62.1.1支腿形式的确定..................................................................62.1.2H形支腿的工作原理..........................................................62.2支腿液压回路的设计......................................................................82.2.1支腿液压回路的作用..........................................................82.2.2支腿液压回路的性能要求..................................................82.2.3QY100K液压系统原理说明................................................82.2.4中小吨位汽车起重机支腿液压回路分析.......................112.2.5两种液压支腿回路的比较...............................................12第3章起重机支腿液压系统原件的确定...............................................143.1系统压力的确定........................................................................143.1.1液压系统各回路计算及主要元件的选择.......................143.2支腿压力计算..............................................................................14IV3.2.1计算工况及载荷...............................................................143.2.2按三点支撑的压力计算...................................................153.3水平支腿液压缸作用力的确定..................................................173.4各种液压缸尺寸的确定..............................................................173.4.1垂直液压油缸尺寸的确定...............................................173.5液压缸伸缩速度及流量的计算................................................203.5.1垂直液压缸伸缩速度及流量的计算...............................203.5.2水平液压缸伸缩速度及流量的计算...............................203.6液压泵的工作压力及排量的确定,液压泵的选择..................213.6.1液压泵额定工作压力的确定...........................................213.6.2液压泵额定流量的计算....................................................233.6.3液压泵的选择...................................................................23第4章支腿液压系统附件的选用...........................................................234.1液压油箱的设计...........................................................................244.1.1油箱的基本功能和分类....................................................244.1.2油箱的设计要点...............................................................244.1.3油箱容积确定....................................................................254.1.4油箱附件的选取................................................................274.2油管的确定..................................................................................304.3液压传动的工