分析正弦液压泵建模与仿真

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1、HydromechatronicsEngineering机床与液压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)．