液压起重台车设计论文[带图纸].doc -- 45 元

编号无锡太湖学院毕业设计（论文）题目液压起重台车设计信机系机械工程及自动化专业学号学生姓名指导教师（职称教授）（职称）2013年5月25日无锡太湖学院本科毕业设计（论文）诚信承诺书本人郑重声明所呈交的毕业设计（论文）液压起重台车设计是本人在导师的指导下独立进行研究所取得的成果，其内容除了在毕业设计（论文）中特别加以标注引用，表示致谢的内容外，本毕业设计（论文）不包含任何其他个人、集体已发表或撰写的成果作品。班级机械91学号0823108作者姓名2013年5月25日I摘要毕业设计我的课题是液压起重台车设计。设计该液压起重台车主要是用于及时更换机床工具，其特征是用车轮行驶，可制动，用脚进行液压提升和下降，承重500公斤，工作台高度可从660mm，调节到960mm。在设计过程中，对主要受力零件进行了强度、稳定性的分析及计算，使设计零件达到安全指标。并且对其中受力最大的零件柱塞杆进行了有限元分析。该液压起重台车比起现代化的电动起重车显得极为落后，但本设计结构设计简单、合理，而且成本低廉、操作方便,是非常实用的一部运输工具。论文最后还对起重台车的工作原理进行了介绍，并附有使用和维护的说明。关键词液压强度计算工作原理液压系统IIAbstractMytopicofThegraduationprojectisthehydraulicpressureandhydraulicsystemdesign.Designsthishydraulicpressuretogetuptheheavytrolleymainlyissuesinpromptlytoreplacetheenginebedtool,itscharacteristiciswiththewheeltravel,mayapplythebrake,carriesonthehydraulicpressurepromotionandthedropwiththefoot,theloadbearing500kilograms,theworktablehighlymayfrom660mm,adjust960mm.Inthedesignprocess,hascarriedontheintensitytothemainstresscomponents,thestableanalysisandthecomputation,enablesthedesigncomponentstoachievethesecuritytarget.Andhascarriedonthefiniteelementanalysistostressbiggestcomponentsplungerrod.Thishydraulicpressuregetsuptheheavytrolleytocomparemodernizedtheelectricallyoperatedderrickcartoappearextremelyfallsbehind,butthisdesignstructuraldesignsimple,reasonable,moreoverthecostisinexpensive,theeaseofoperation,isextremelypracticaltransportmeans.Thepaperfinallyalsotogotuptheheavytrolleyprincipleofworktocarryontheintroduction,andattachedtheexplanationwhichusedandmaintains.KeywordsHydraulicpressureStrengthcalculationPrincipleofworkThehydraulicsystemIII目录摘要..........................................................................................................................................IAbstract..........................................................................................................................................II目录...............................................................................................................................................III第一章绪论.............................................................................................................................11.1国际起重市场分析............................................................................................................11.2起重机发展趋势................................................................................................................11.2.1发展超大型起重机..................................................................................................11.2.2迷你起重机大量涌现..............................................................................................21.2.3伸缩臂结构不断改变..............................................................................................31.3液压系统的类型...............................................................................................................31.3.1液压系统的回路.....................................................................................................3第二章原始数据及设计要求.......................................................................................................52.1设计原始参数....................................................................................................................52.2设计要求............................................................................................................................5第三章强度及稳定性计算.........................................................................................................73.1液压缸的设计....................................................................................................................73.1.1确定液压缸的工作压力..........................................................................................73.1.2确定液压缸内径......................................................................................................73.1.3液压缸的壁厚和外径的计算..................................................................................73.1.4缸筒变形的计算......................................................................................................83.2柱塞杆的强度计算............................................................................................................83.3塞杆稳定性计算..............................................................................................................103.3.1无偏心载荷时的纵向弯曲极限力........................................................................103.3.2承受偏心载荷时的纵向弯曲极限力....................................................................113.3.3活塞杆最大容许行程的计算...............................................................................123.4脚踏泵的一些计算..........................................................................................................133.4.1脚踏泵油箱所有油量的计算................................................................................133.4.2柱塞运动到最高处时，所需踏的次数................................................................133.4.3小柱塞油泵所能产生的压力P2...........................................................................143.4.4复位弹簧的一些参数计算....................................................................................15第四章工作原理介绍.............................................................................................................184.1液压工作原理图如下..................................................................................................184.2液压传动的工作原理.....................................................................................................194.3高压油管的选择..............................................................................................................19