小型液壓挖掘機柱塞泵性能的研究.pdf

1、中南大學碩士學位論文小型液壓挖掘機柱塞泵性能的研究姓名：王勇剛申請學位級別：碩士專業(yè)：機械電子工程指導教師：郭勇20090605中南大學碩士學位論文ABSTRACTABSTRACTHydraulicsystemiSthecoreofthehydraulicexcavatorasallimportantpowercomponentofhydraulicexcavatorthehydraulicpumpprovidesthenecessar

2、ypressureandflowunderthedifferentsystemoperatingconditions，thencontroltheworkingspeedandefficiencyoftheimplementationcomponentswhichhasadirectaffectonactioncoordinationofthevariousexcavatorsandworkingstabilityofthediffer

3、entworkconditionsthispapergivesacarefulresearchontheeffiencyandfullpowercontroloftheaxialpistonpumpbasedontheswel5，themainworkconcludesasfollows：Summaringoftheresearchstatusanddevelopmenttrendoftheminiexcavatorandaxialpi

4、stonpump，introducingthemainmethodofthepumpcontrolandeffiencyoftheaxialpistonpumpatpresent，analysingthemainfactrorthataffectstheaxialpistonpump，elaboratingthemainworkingconditonandfeatures，derivingthebestrotaryspeedFormul

5、aofthefixeddisplacementpumpthemainworkingprincipleoftheaxialpistonpumpisanalyzedcarefullythemovementrelationshipbetweentheswashplatecylinderandpistonisderived，bymakinguseofthesystemmodelingsoftwareamesim，simulationmodelo

6、ftheaxialpistonpumpandfullpowercontroloftheminiexcavatorswel5areestablishedTheeffectofthemainparametersoftheaxialpistonhydraulicpumptodynamicCharacteristicsiSanalyzedcombinationwiththeactualworkingcondition，theVolumetric

7、efficiencyofthedifferentworkingconditioniSderived，whichprovidesausefulreferencetothee伍cencyanddynamicperformanceExperimentsprovethatthefullpowercontrolmodeloftheexcavatoriscorrect，finally，fortherotarytableandtheprocessof

8、boompromoting，inthecaseofthefullload，thephenomenonofmovementCO—ordination，byaddingaproportionreliefvalveintherotarytablequantitativegearpumpcircuit，areasonablesimulationvalueoftheproportionreliefvalveiSsetinordertomeetth