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滨州学院本科毕业设计(论文)1毕业设计（论文）题目汽车剪式举升机设计系（院）机电工程系专业机械设计制造及其自动化学生姓名学号指导教师职称二〇一四年六月二十日滨州学院本科毕业设计(论文)2独创声明本人郑重声明：所呈交的毕业设计(论文)，是本人在指导老师的指导下，独立进行研究工作所取得的成果，成果不存在知识产权争议。据我所知，除文中已经注明引用的内容外，本设计（论文）不含任何其他个人或集体已经发表或撰写过的作品成果。对本文的研究做出重要贡献的个人和集体均已在文中以明确方式标明。本声明的法律后果由本人承担。作者签名:年月日毕业设计（论文）使用授权声明本人完全了解滨州学院关于收集、保存、使用毕业设计（论文）的规定。本人愿意按照学校要求提交学位论文的印刷本和电子版，同意学校保存学位论文的印刷本和电子版，或采用影印、数字化或其它复制手段保存设计（论文）；同意学校在不以营利为目的的前提下，建立目录检索与阅览服务系统，公布设计（论文）的部分或全部内容，允许他人依法合理使用。（保密论文在解密后遵守此规定）作者签名:年月日滨州学院本科毕业设计(论文)3举升机摘要：汽车举升机是指汽车维修行业用于汽车举升的汽保设备。举升机在汽车维修养护中发挥着至关重要的作用，无论整车大修，还是小修保养，都离不开它，，其产品性质、质量好坏直接影响维修人员的人身安全。在规模各异的维修养护企业中，无论是维修多种车型的综合类修理厂，还是经营范围单一的街边店（如轮胎店），几乎都配备有举升机。汽车举升机是指汽车维修行业用于汽车举升的汽保设备。举升机在汽车维修养护中发挥着至关重要的作用，无论整车大修，还是小修保养，都离不开它，，其产品性质、质量好坏直接影响维修人员的人身安全。在规模各异的维修养护企业中，无论是维修多种车型的综合类修理厂，还是经营范围单一的街边店（如轮胎店），几乎都配备有举升机。国外品牌尽管价格较高，但依靠其产品质量好、性能稳定、设备操作简单，在经销商中建立了良好的口碑。随着近几年国内举升机行业的发展，无论在产品设计、技术开发还是售后服务方面，都进行了很多的改进，销量也大大提高。举升机按照功能和形状来分，一般可分为，两柱，四柱，剪式三大类。关键字：举升机；剪式；LiftAutoliftreferstovehiclerepairindustryfortheliftingofthesteamguaranteestheequipment.Liftinautomobilemaintenanceandcuringplaysaveryimportantrole,whetherthevehicleoverhaul,orminorrepairsandmaintenance,areinseparablefromit,anditsproductshaveadirectimpactonnatureandqualitymaintenancepersonnelsafety.Thescaleofmaintenanceandcuringenterprises,whethermaintenancerangeofvehiclescomprehensiverepairshop,orbusinessscopesinglestreetshop(suchastirestore),almostallequippedwithliftingmachine.From1990's,domesticliftingmachinegraduallybecamepopularinChina,withtheincreaseofautopossession,liftasanimportanttoolforcarmaintenance,demandtoogreatlyincreased.Nowliftmarkethasnearly100Chineseandforeignbrand,productserieshundredsofthousands.Liftforeignfamousbrandhasbend-Rotary,pak,domestichaveantellforce,millionforceAMREOC,jinhua(openJIG),hanMaiKeSen,sequenceof,yuanlevy,sof,extensiveforce,etc.Foreignbrandsthoughpriceshigher,butrelyonitsproductquality,stableperformance,theequipmentissimple,establishedindealersgoodreputation.Asinrecentyearsthedevelopmentofdomesticliftingmachineindustry,nomatterinproductdesign,technicaldevelopmentorafter-salesservice,werealotofimprovement,saleshavegreatlyimproved.Liftingmachineaccordingtothefunctionandshapespoints,cangenerallybedividedinto,twocolumns,four-column,scissorthreecategories.Keywords:lift，scissor滨州学院本科毕业设计(论文)4目录第一章绪论························································11.1举升机的发展简史·····················································11.2汽车举升机的设计特点···············································21.3汽车举升机的安全保证措施···········································31.3.1设计制造方面的安全保证措施·······································31.3.2使用维护方面的安全保证措施·······································4第二章剪叉式升降台的应用及其受力分析································52.1剪叉式升降平台的三种结构形式·······································52.2双铰接剪叉式升降平台机构的位置参数计算···························62.3双铰接剪叉式升降平台机构的动力参数计算···························82.4剪叉式升降平台机构设计时应注意的问题······························92.5针对性比较小实例：···················································92.6双铰接剪叉式升降平台机构中两种液压缸布置方式的分析比较·········122.6.1问题的提出：······················································132.6.2两种布置方式的分析和比较：······································142.6.3实例计算·························································15第三章液压传动系统的设计计算··········································203.1明确设计要求制定基本方案：·········································203.2制定液压系统的基本方案··············································203.2.1确定液压执行元件的形式·······································203.2.2确定液压缸的类型················································223.2.3确定液压缸的安装方式···········································223.2.4缸盖联接的类型··················································223.2.5拟订液压执行元件运动控制回路···································223.2.6液压源系统························································223.3确定液压系统的主要参数··············································233.3.1载荷的组成与计算：················································233.3.2初选系统压力······················································253.3.3计算液压缸的主要结构尺寸········································263.3.4确定液压泵的参数·················································28滨州学院本科毕业设计(论文)53.3.5管道尺寸的确定··············································…303.3.6油箱容量的确定················································313.4液压缸主要零件结构、材料及技术要求································313.4.1缸体·····························································313.4.2活塞·····························································323.4.3活塞杆···························································333.4.4活塞杆的导向、密封和防尘·······································333.4.5液压缸的排气装置················································343.4.6液压缸安装联接部分的型式及尺寸································353.4.7绘制液压系统原理图··············································35第四章台板与叉杆的设计计算···········································394.1确定叉杆的结构材料及尺寸···········································394.2横轴的选取····························································43结论·································································44致谢············································