全液压推土机驱动及控制系统研究

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1、西南交通大学硕士学位论文全液压推土机驱动及控制系统研究姓名：漆俐申请学位级别：硕士专业：机械电子工程指导教师：许明恒20070409西南交通大学硕士研究生学位论文第1I页AbstractSincetheeightiesofthe20thcentury,thetraditionalmachinery孵，hydraulic-machinerytypebulldozer玳SOclosetoeventhesamewiththeforeigncorrespondingproductsintermsofitsmanufacturingcapacity,itsproductionscalea

2、swellasitsengineeringlevelthatourcountryhassomecapacityforthen哪productsinthefieldbyimportingOVCI'Seastechnologyandlearningadvancedtechnologyfromit．However,itisrelativelylateforourcountrytostudyfullhydraulicbulldozer．Presently,inthedomesticmarketthereisafewfullhydraulicbulldozerwhoseproductio

3、nanddevelopmentarcintheinitialstage．Additionally,itfalIsbehindtheadvancedinternationalstandardsinthematchingtheories，appraisingsystem,dependability,controllingalgorithmsandcontrollingscheme．n坨theoreticalbase．therefore,playsarealisticallymajorroleinthestudyofthefilllhydraulicbulldozer．Inthisp

4、aper,currentsituationofdomesticandforeignresearch,developmenttrendofbulldozerhavebeenanalyzedandsynthesized．Andthecharacteristicofeachkindofhydraulicdrive，andthecharacteristicoftheelectric-controlmethodandthehydraulic-controlmethodhavebeenanalyzed．Finally,thereturncircuitofhydraulictransmiss

5、ionsystemisdesignedonthebasisofthedrivedevicetypeandcontrolschemesuitableforthebulldozer．Thepaperpmvidesthematchprinciplesofpump-engineaccordingtotheanalysisoftheperformancecharacteristicsofhydraulicpump，motorandenginewithsystematicdraughtcharacteristicandeconomyeconomiccharacteristic，theful

6、lhydraulicbulldozerhydraulicdrivingsystematicworkingpressureandworkingpaceofamountoperatingmodearcconfirmed．Duetoanalysisofsystematice伍cieocyandpacerigidity，theparametersmatchingofmotor-pumpareconfirmed．Andtheparameterofthetypicaloperatingmodeofthebulldozerischeckedbecauseofcalculatingformul

7、aeofthekeyparametersofthedrivesystem．Afterhavingbeencarriedonkinematicsanddynamicsanalysistothefullhydraulicbulldozer,thecharacteristicequationoftractionissetupwherethe西南交通大学硕士研究生学位论文第1Il页specifiedslipratioofthefullhydraulicbulldozerisdefinedas12。／