东风自卸车的改装设计

I本科毕业生设计东风自卸车的改装设计院系名称：汽车与交通工程学院专业班级：车辆工程07-2班学生姓名：贺巍指导教师：吕德刚职称：讲师黑龙江工程学院二○一一年六月IITheGraduationDesignforBachelor'sDegreeTheModifyandDesignofDongfengdumptruckCandidate：HeWeiSpecialty：VehicleEngineeringClass：07-2Supervisor：LvDegangHeilongjiangInstituteofTechnology2011-06·Harbin摘要自卸车，是指通过液压或机械举升而自行卸载货物的车辆。由自卸车底盘、举升III机构总成、液压系统总成、锁紧机构总成、大箱总成5大块组成。本次设计主要包含有车厢，取力器，液压缸，整车布置等内容。选择本课题充分考虑了研究课题对车辆工程专业学生学习和工作的指导作用，能够使我们了解专用汽车改装设计方法，通过本课题的研究我们可以完成理论课程的实践总结，获得一定的工程设计工作方法和经验。进行相关的设计，可以解决供需矛盾，培养正确的研究方法、理论联系实际的工作作风、严肃求实的学习态度，锻炼使用工具软件的能力，提高综合设计的能力这次设计为我们了解专用车带来了很大的好处，通过设计我们知道了专用车的结构形式和举升样式等知识，对我们以后的工作有很大的益处。关键词：东风自卸车；自卸车；专用汽车；专用车设计；举升机构；液压系统；ABSTRACTIVDumptruck,isalsocalledthecartothroughthehydraulicormechanicalliftingandunloadinggoodstothevehicle.Bydumpofliftingmechanismofassembly,chassis,hydraulicsystemassembly,lockingmechanismsassembly,bigboxoffivelargeassembly.Thisdesignmainlycontainsthecar,taketheforce,thehydrauliccylinder,thearrangementofthewholecar,etc.Choosethistopicfullconsiderationoftheresearchonvehicleengineeringstudentstostudyandworkguidance,canmakeusunderstandspecialautomobilerefittingdesignmethod,throughthistopicresearchwecancompletetheorycoursethepractice,accesstocertainengineeringdesignworkmethodsandexperience.Relateddesign,cansolvethecontradictionbetweensupplyanddemand,theresearchmethods,cultivatecorrecttheorywithpracticeworkstyle,seriousrealisticlearningattitude,exercisetheabilityoftoolusesoftware,improvetheoveralldesignoftheabilityforustounderstandthisdesignhasbroughtgreatbenefitsa.,throughthedesignweknowthespecialstructureoftheformandliftingstyleandetc,toourknowledgelaterworktohavetheverybigprofit.Keywords:dongfengskip;Equipments;Specialvehicle;Specialautomobiledesign;Liftingmechanism;Hydraulicsystem;5目录摘要....................................................................IIABSTRACT..............................................................IV第1章绪论.............................................................71.1课题的研究现状......................................................71.2选题的目的与实际意义................................................81.3国内外自卸汽车的发展概况............................................91.4主要研究内容........................................................111.5本章小结............................................................11第2章东风自卸车主要性能参数确定.....................................122.1整车尺寸参数的确定..................................................122.1.1自卸车的分类..................................................122.1.2自卸车的结构..................................................122.2整车尺寸参数的确定..................................................152.3质量参数的确定......................................................172.4其它性能参数........................................................182.5本章小结............................................................19第3章自卸车车厢的结构与设计.........................................203.1举升汽车车厢的结构形式..............................................203.1.1车厢的结构形式....................................................203.1.2车厢选材......................................................213.2车厢的设计规范及尺寸确定............................................213.2.1车厢尺寸设计..................................................213.2.2车厢内框尺寸及车厢质量........................................223.3车厢板的锁启机构....................................................233.4本章小结...........................................................24第4章自卸举升机构的设计..............................................254.1自卸举升机构的选择..........................................254.1.1举升机构的类型................................................254.1.2自卸汽车倾卸机构性能比较.......................错误!未定义书签。4.2举升机构受力分析与参数选择...........................错误!未定义书签。4.3本章小结............................................错误!未定义书签。第5章液压系统设计......................................错误!未定义书签。5.1液压系统工作原理与结构特点...........................错误!未定义书签。5.1.1工作原理.......................................错误!未定义书签。5.1.2液压系统结构布置...............................错误!未定义书签。65.1.3液压分配阀....................................................295.2油缸选型与计算......................................................305.3取力器的选择........................................................365.4本章小结............................................................38第6章副车架的设计.....................................................386.1主车架的改装.......................................................386.1.1主车架的钻孔和焊接............................................386.1.2主车架的加长设计..............................................396.1.3主车架加强板的设计............................................406.2副车架的设计.......................................................416.2.1副车架的截面形状及尺寸........................................416.2.2加强板的布置..................................................416.2.3副车架的前端形状及安装位置....................................426.2.4纵梁与横梁的连接设计..........................................436.2.5副车架与主车架的连接设计......................................446.2.6副车架的强度校核..............................................466.3本章小结............................................................47结论............................