题目：八吨汽车吊车回转机构液压系统设计专业：机械设计制造及其自动化学号：姓名：指导教师：机械与运载学院沈阳工学院毕业设计摘要本设计论文主要介绍了当前课题的背景和课题的研究意义,论述了国内外轮式起重机发展概况和发展趋势,并对起重机的液压系统和回转机构进行了设计、计算，其中包括液压系统的设计方案的对比、分析，回转机构结构设计方案的选择，而且对重要零部件进行了设计校核。回转机构的结构设计是从回转机构的回转速度入手，确定所选结构的传动比，并对内部的马达、联轴节进行选择。并且对齿轮、蜗轮蜗杆进行了设计、计算。最后，对回转机构的主要零部件进行了校核，最终实现回转机构所要求的回转速度。关键词：汽车起重机；液压系统；回转机构；回转支撑装置；液压马达-I-沈阳工学院毕业设计AbstractThisdesignpapermainlyintroducedthecurrentbackgroundandthesignificanceofstudy,whichelaboratedthetendencyanddevelopmentofautohoistindomesticandforeigncountry.Andithascarriedonthedesignandthecomputationtohydraulicsystemandtherotationorganizationoftheautohoist,includingthecontrastofhydraulicsystemdesignprogram,andthechoiceoftherotationorganizationstructural.Moreoveritalsomadesomekindsoftheexaminationontheimportantspareparts.Thedesignoftherotationorganizationstructuralbeginswiththespeedoftherotationorganization,determinsthevelocityratio,andchoosestheinternalmotor.Anditalsocapulatatstheshaftcouplingandthegear.Finally,italsocarriesontheexaminationofthemainspareparts,finallytherotationspeedwhichtherotationorganizationrequestsisrealized.Keywords：TruckCrane;HydraulicSystem;RotationOrganization;RotatingBlocking;HydraulicMotors-II-沈阳工学院毕业设计目录摘要......................................................................................................................IAbstract...............................................................................................................III第一章绪论........................................................................................................11.1课题背景和研究意义................................................................................11.2国内外轮式起重机发展概况和发展趋势................................................11.2.1国内轮式起重机发展现状.................................................................11.2.2国外轮式起重机发展过程及主要机种.............................................31.2.3轮式起重机产品的发展趋势.............................................................41.3主要工作参数............................................................................................51.4型汽车起重机参数确定............................................................................61.5起重机主要结构特点................................................................................81.6本章小结....................................................................................................9第二章液压系统原理设计...............................................................................102.1液压系统型式..........................................................................................102.1.1开式、闭式系统...............................................................................102.1.2单泵、多泵系统...............................................................................102.2液压系统的控制.......................................................................................112.2.1定量节流控制系统......................................
