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1、HydromechatronicsEngineering機(jī)床與液壓DOI:10.3969/j.issn.1001—3881.2012.06.004ModelingandSimulationofSinusoidalPumpDINGWensi,ZHANGXu(SchoolofMechanical&AutomotiveEngineering,SouthChinaUniversityofTechnology,Guangzhou510540,China)Abstract:Theprimaryfocusofthisstud
2、yistoinvestigateatypeofhighpressureradialpistonpump,whichhasasinu—soidaloutputflowrate.ModelofthepumpisbuiltinAMESim,andthencharacteristicsofflowrateandresponsearecalculatedandanalyzedinthismode1.Allwehavedoneinthisworkwillprovideagoodplatformtothedesignandr
3、e-searchofsinusoidalpump.Keywords:radialpistonpump,sinusoidal,modeling,simulationSinusoidalpumpisakindofradialpistonpumpcontrolpin(8inFig.1).Thedriveisbymeansoftheoftenusedashydraulicpowercomponentsinheavyshaft(12inFig.1)viathecoupling(11inFig.1)forgingpress
4、.SinceithasasinusoidaloutputflowThepistons(3inFig.1)arepushedagainsttherota-rateastimegoeson,thehydraulicsystemsuffersverytingdrum(4inFig.1)bymeansofthecentrifugallittleimpactwhentheoildirectionchanges.Inthisforceandtheoperatingpressure.Theyayesupposedpaper,
5、modelofthepumpisestablishedinAMESim,byhydrostaticandhydrodynamicguideshoes(5inandleakage,compressibilityofhydraulicoil,eccen—Fig.1).Asinus—shapedoscillatingstrokemovementtricityofpistonandfrictioninthepumphadbeenof11pistonsisachievedthroughtheeccentricitybe-
6、fullytakenintoaccountwhenitworks.Thencharac—tweenrotatingradialcylinderarrangementandrota·teristicsofflowrateandpressurearecalculatedandringdrum.Thecontrolslits(7inFig.1)inaccord—analyzed.Itprovidesagoodplatformtothedesignofancewiththepistonkinematicsallowfo
7、ranalmostpump,reductionofnoiseandpulsationofflowratepulsation—freepumpingcapacity.Theregulatingde—andpressure.viceoperatesdirectlybymeansoftheeccentricalswings(6inFig.1)onthebearingsoftherotatingoperatingprin-drum,thusresultinginanextremelyeasyregulationofth
8、epumps.AfurtherspecialfeatureisthepistonSinusoidalpumpconsistsoftwelveprimarycom—retractiondevice(10inFig.1)whichprotectsthepiston-guideshoeconnectionfromdisengagingatlowponents(asshowninFig.1).