搜索
本科毕业设计题目名称：液压式汽车双柱举升机设计学院：专业年级：学生姓名：班级学号：指导教师：二XXX年六月十日摘要--I摘要双柱式汽车举升机是一种汽车修理和保养单位常用的举升设备，广泛应用于轿车等小型车的维修和保养。目前，全国生产汽车举升机的厂家较多，生产的举升机的形式也比较繁多，有双柱式举升机、四柱式举升机、剪式举升机、组合移动汽车式举升机等。本文较全面地介绍了举升机的分类，在确定了所要设计的举升机的方案之后，即针对举升机的结构及其特点要求进行了设计与说明。然后分析了液压式双柱汽车举升机主立柱的截面特性，并对主立柱的强度和刚度和托臂的强度进行了校核验算。同时对液压缸活塞杆强度也进行了验算，以保证所设计的举升机满足使用要求。关键词液压式，双柱举升机，机械结构设计，液压驱动，大学本科毕业设计--IIAbstractDouble-columnautomobileliftingmachineiscommonlyusedliftingequipmentinautomobilerepairandmaintenanceorganization,widelyusedincar’sandsmalltruck’srepairandmaintenance.Themanufacturersandthetypesoftheautomobileliftingarebothnumerous,forinstance,double-columnlifting,forth-columnlifting,shearinglifting,mobilecarcombinationliftingandsoon.Thepapermakesacomprehensiveintroductiontotheclassificationoftheliftingandwhenthelifting’sdesignprogramisidentified,thispapergivesthedesignanddescriptionagainstthestructureandcharacteristicsofthelifting.Andthenthemaincolumn’ssectioncharacteristicsofthehydraulicdouble-columnliftingareanalyzed,andthestrengthandstiffnessofthemaincolumnandthestrengthofthearmandpistonrodofthehydrauliccylinderarealsocheckedtomeettherequirementofthedesignedliftingmachine.Keywordshydraulic;double-columnliftingmachine;mechanicalstructuredesign;hydraulicdrivingAbstract--I目录摘要...........................................................................................................................................1Abstract..................................................................................................................................II1举升机方案设计...................................................................................................................11.1举升机的基本情况...........................................................................................................11.1.1常用汽车举升机的结构类型........................................................................................11.1.2汽车举升机的主要参数................................................................................................11.2举升装置的要求...............................................................................................................11.3普通式双柱汽车举升机结构方案的确定.......................................................................22普通式双柱汽车举升机的结构设计...................................................................................42.1举升装置...........................................................................................................................42.2立柱...................................................................................................................................52.3支撑机构...........................................................................................................................52.4同步机构...........................................................................................................................63液压式双柱汽车举升机的强刚度分析与验算...................................................................73.1普通式双柱举升机立柱的结构分析和验算...................................................................73.1.1主立柱的截面特性分析与计算....................................................................................73.1.2主立柱的强度分析与验算............................................................................................93.1.3主立柱的刚度计算......................................................................................................163.1.4托臂部分强度核算......................................................................................................174液压系统.............................................................................................................................194.1液压系统工作原理.........................................................................................................194.2液压缸计算校核.............................................................................................................204.2.1液压缸的设计计算......................................................................................................204.2.2液压缸活塞杆强度验算..............................................................................................204.2.3液压泵的选择..............................................................................................................215结论.....................................................................................................................................22参考文献.................................................................................................................................23致谢.........................................................................................................................................241举升机方案设计--11举升机方案设计1.1举升机的基本情况1.1.1常用汽车举升机的结构类型目前，全国生产汽车举升机的厂家较多，生产的举升机的形式也比较繁多，有双柱式举升机、四柱式、剪式、组合移动汽车式等。仅从举升机的外型来分类的基本形式就有：普通双柱式、龙门双柱式、四立柱式、剪式、移动式和单立柱式等汽车举升机按照举升机的举升装置的形式分类也有很多种，包括丝杠螺母举升式、链条传动举升式、液压缸举升式、齿轮齿条举升式等举升机。从举升机的驱动方式分，主要有：电机驱动式举升机和液压驱动式举升机。1.1.2汽车举升机的主要参数普通式双柱举升机、龙门式双柱举升机和四立柱式举升机这三种目前市场上主要的汽车举升机的主要技术参数统计如表1-1所示。表1-1汽车举升机的主要参数额定举升质量最大举升高度盘距地高度全程上升时间全程下降时间tmmmmss普通式双柱2.5-41700-1800110-18050-7020-60