6、nd working performance ofthedumper.Tringtoanalyzeandcom-pare thehydraulicsystem structuresof importantmodels of CNHTC, FAW, FOTONAutomobile,SCQC, Saic-ivecoHongyan and JACgalloptounderstandtheintegralshapeofdumperandthedesignapproachoftheliftingdevice. After gainingsomedataanddesigninformation,desi
7、gningthehydrauliccylinderconstruction,andusingSolidWorksto construct the3-Dmodelofthewholevehicle and allcomponentsoftheliftingdeviceand carryingoutthe kinematicssimulationanalysis andforceanalysis,whichhas