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桥梁检测车设计及CAE仿真分析XXX硕士学位论文（专业学位）学生姓名：XXX指导教师：XXX兼职导师：学位类别：工程硕士（车辆工程领域）重庆大学机械工程学院二O一三年五月DesignoftheBridge-inspectVehicleandStructureCAEAnalysisAThesisSubmittedtoChongqingUniversityinPartialFulfillmentoftheRequirementfortheProfessionalDegreeByChenYiTingSupervisedbyProf.HeYanSongPluralisticSupervisedbySpecialty：VehicleEngineeringCollegeofMechanicalEngineeringofChongqingUniversity,Chongqing,ChinaMay2013摘要中国是世界上拥有桥梁最多的国家之一，特别是重庆市拥有大小桥梁六千余座。桥梁建设的快速发展和桥梁安全的高度重视，使得对桥梁的病害检测量越来越大。为提高检测精度和工作效率，主要使用桥梁检测车对桥梁进行流动检测和维修作业。桥梁检测车是在桥梁检测过程中为工作人员提供作业平台的专用汽车。它由二类汽车底盘加装专用工作装置和控制系统组成，可以随时移动位置，并能快速、高效、安全地让工作人员进入作业区域，工作时不影响交通而且可以在不收回臂架的情况下慢速行驶，是对各类桥梁检测维护的理想设备。我国桥梁检测车尚处于研发的初级阶段，研发生产能力较弱。到去年为止仅有宝龙和徐工两家企业拥有生产能力，国内桥梁检测车仍主要依赖进口。可见，今后包括桥梁检测车在内的道路养护检测专用车辆将具有广阔的市场。论文参考国际桥梁检测车的先进技术，以某进口汽车底盘为基础，进行桥梁检测车的国产化研发工作。论文首先对桥梁检测车的工作稳定性、行驶稳定性进行了分析，并对自行走驱动机构驱动转矩进行了计算，然后对桥梁检测车的臂架结构进行了设计，并利用有限元分析软件对臂架结构、副车架、导向滚轮轮轴和转盘进行了CAE分析，最后通过电测试验验证了臂架结构的强度、刚度和结构位移能够满足桥梁检测的实际需要。论文为桥梁检测车总布置设计，臂架结构设计及强度、刚度CAE分析，臂架结构电测试验方法等桥梁检测车设计中的关键问题，提出了一套有效的研发方案和检测方法，并为进一步改进提供了理论依据。关键词：桥梁检测车，桁架，有限元，自行机构，电测试验ABSTRACTChinaisoneofthecountrieswithmostnumberofbridgesintheworld,especiallyinChongqingtherearemorethansixthousandbridges.Withtherapiddevelopmentofbridgeconstructionandattentiononbridges’security,thediseasedetectionforthebridgesbecomesmoreandmoreimportant.Inordertoimprovedetectionprecisionandworkefficiency,theBridge-inspectVehicleismainlyusedforthebridge’sflowdetectionandmaintenanceworkintheforeigncountries.It'smadeupofautomobilechassisspecialdeviceandcontrolsystem.Itoffersplatformunitsforworkersatanymomenttomovetoasuitablepositionrapidlyandsafely．Itwillnotaffectthetrafficflowandcanmoveslowlyundertheconditionofnotwithdrawingarmstand.Soitisaidealequipmentfortestingandmaintenanceofthehighwaybridges.Inourcountry,thedevelopmentoftheBridge-inspectVehicleisintheinitialstageandtheproductiondevelopmentcapabilityisveryweak.Bytheendoflastyear,onlytwoenterprisesBonhamsandXCGhaveproductioncapacityandthemainequipmentstillrelyonimports.Thusinthefuture,roadmaintenancetestingspecialvehiclesincludedbridge-inspectvehiclewillhaveaverybroadmarket.ThisprojettakesacertainimportedchassisasthebasementandtakesadvantageofadvancedforeigntechnologytocarryoutthedevelopmentworkofBridge-inspectVehiclelocalization.First,thebridgeinspectionworkstability,drivingstabilityareanalyzed,aswellastheself-go-drivingmechanism.ThenthearmstructureofBridge-inspectVehicleisdesignedandtheviceframe,rotaryandguiderollershaftareanalyzedbyusingthefiniteelementanalysissoftware.Finally,throughelectrometrictesting,it’sverifiedthatthearmframestructurestrength,stiffnessandstructuraldisplacementmeasurementcouldmeetthepracticalrequirementsofbridgedetection.ThepaperputforwardasetofeffectivedevelopmentprogressandtestmethodsforBridge-inspectVehicleoveralllayoutdesign,armstructuredesignandstrength,stiffnessofCAEanalysis,thestructureelectricalmeasuringtestandthekeyissuesinBridge-inspectVehicle.Thiswillprovideatheoreticalbasisforthefurtherimprovements.KeyWords：Bridge-inspectVehicle,TrussStructure,FEA,Self-goingMechanism,ElectricTestingIV目录摘要.................................................................................................................................................IIAbstracts........................................................................................................................................III1绪论..............................................................................................................................................41.1概述...................................................................................................................................41.2国内外研究现状...............................................................................................................41.3新型桥梁检测车的方案论证...........................................................................................61.3.1技术特点及经济效益...........................................................................................61.3.2总布置方案...........................................................................................................71.4主要研究内容...................................................................................................................72桥梁检测车稳定性及自行走驱动分析.......................................................................................92.1桥梁检测车工作稳定性分析.........................................................................................92.1.1以右轮胎边缘为支撑点进行分析.....................................................................9（1）工况1计算及分析...............................................................................................10（2）工况2计算及分析...............................................................................................11（3）工况3计算及分析...............................................................................................11（5）工况5计算及分析...............................................................................................13（6）工况6计算及分析..............................................