大学毕业设计---液力传动变速箱的设计与仿真.doc

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1、本科毕业设计（论文）通过答辩摘要本课题是设计一个液力传动变速箱，液力传动变速箱是汽车中的驱动设备，广泛的应用于叉车、牵引车、挖掘车等工业车辆中。随着人们对液力传动的性能及其优越性认识的逐渐深入，液力传动装置的应用也越来越广泛。根据本次设计的的要求，本论文是一个驱动60吨的液力传动变速箱设计过程。液力传动变速箱主要由变速箱、液力变矩器、油泵总成与主调压阀和溢流阀组件、操纵阀组件、离合器和液压控制等部分组成。由液力变矩器提供转矩和具有前进二档、后退二档共四个档位的动力换档变速箱。液力变矩器使该液力传动变速箱具有液力传动输出的自动适应性，能随着外负载的变化而相应改变其输出扭矩和转速，而

2、且要求能够吸收和消除来自发动机和外负载对传动系统的冲击振动。所采用的换档方式要求操纵简单、方便，起动平稳，较大地减轻操作者劳动强度。本课题通过液力传动变速箱主要参数的设计，用三维设计软件UG来实现液力传动变速箱的零部件造型和整机造型。在液力传动变速箱设计过程中，在投入生产之前利用计算机进行装配仿真，及时纠正设计中的不足。关键词液力传动变速箱；液力变矩器；离合器；操纵阀II本科毕业设计（论文）通过答辩AbstractThistopicistoadesignahydraulicTransmissionGearbox,hydraulictransmissiongearboxisinav

3、ehicleequipments,widelyusedinforklifttrucks,tractors,miningtrucksandotherindustrialvehicles.Aspeopledriveonthehydraulicperformanceandadvantagesofthegraduallydeepeningunderstanding,applicationofthehydraulictransmissionisalsomoreextensive.Accordingtotherequirementsofthisdesign,thisthesisisadriv

4、eof60tonsofhydraulicpowertransmissiondesignprocess.Mainlybythetransmissionhydraulictransmissiongearbox,torqueconverter,oilpumpassemblywiththemainpressureregulatingvalveandpressurereliefvalvecomponents,controlvalvecomponents,clutchandhydrauliccontrolcomponents.Providedbythehydraulictorqueconve

5、rterandaforwardsecondgear,secondgearbackatotaloffourstallsinthepowershifttransmission.Sothatthehydraulictorqueconvertertransmissionwithhydraulictransmissionoutputgearautomaticadaptationtochangesinexternalloadwithcorrespondingchangesinitsoutputtorqueandspeed,butalsorequirestheabilitytoabsorban

6、dremovefromtheengineandtheouterloadonthetransmissionofshockandvibration.Theapproachrequirescontrolgearusedinsimple,easy,smoothstart,moretoreducethelaborintensityofoperators.Thesubjectofthemainparametersoftransmissionthroughthehydraulictransmissiondesign,whichusesthethree-dimensionaldesignsoft

7、waretoachievehydraulictransmissiongearboxUGpartsmodelingandmachinemodeling.Inthehydraulicdrivetransmissiondesignprocessintoproductionbeforetheassemblybycomputersimulation,andpromptlycorrectdesigndeficiencies.KeywordsHydraulicTransmissionGearb