轴向柱塞泵的外文资料参考模板42079

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1、广东技术师范学院天河学院本科毕业设计外文翻译译文学生姓名院（系）广东技术师范学院天河学院专业班级机械设计制造及其自动化指导教师完成日期外文出处：http://www.tpub.com/content/engine/14105/css/14105_58.htmAxialPistonPumpsInaxialpistonpumpsofthein-linetype,wherethecylindersandthedriveshaftareparallel,thereciprocatingmotioniscreatedbyacamplate,

2、alsoknownasawobbleplate,tiltingplate,orswashplate.Thisplateliesinaplaneplatethatcutsacrossthecenterlineofthedriveshaftandcylinderbarrelanddoesnotrotate.Inafixed-displacementpump,thecamplatewillberigidlymountedinapositionsothatitintersectsthecenterlineofthecylinderbarr

3、elatanangleapproximately25degreesfromperpendicular.Variable-deliveryaxialpistonpumpsaredesigned,sothattheanglethatthecamplatemakeswithaperpendiculartothecenterlineofthecylinderbarrelmaybevariedfromzeroto20or25degreestooneorbothsides.Oneendofeachpistonrodisheldincontac

4、twiththecamplateasthecylinderblockandpistonassemblyrotateswiththedriveshaftThiscausesthepistonstoreciprocatewithinthecylinders.Thelengthofthepistonstrokeisproportionaltotheanglethatthecamplateissetfromperpendiculartothecenterlineofthecylinderbarrel.Avariationofaxialpi

5、stonpumpisthebent-axistypeshowninfigure4-14.Thistypedoesnothaveatiltingcamplateasthein-linepumpdoes.Instead,thecylinderblockaxialisvariedfromthedriveshaftaxis.Theendsoftheconnectingrodsareretainedinsocketsonadiscthatturnswiththedriveshaft.Thecylinderblockisturnedwitht

6、hedriveshaftbyauniversaljointassemblyattheintersectionofthedriveshaftandthecylinderblockshaft,Inordertovarythepumpdisplacement,thecylinderblockshaftandvalveplatearemountedinayokeandtheentireassemblyisswunginanarearoundapairofmountingpintlesattackedtothepumphousing.Fig

7、ure4-14Bent–axisaxialpistonpumpThepumpingactionoftheaxialpistonpumpismadepossiblebyauniversaljointorlink.Figure4-15isaseriesofdrawingsthatillustrateshowtheuniversaljointisusedintheoperationofthispump.First,arockerarmisinstalledonahorizontalshaft.(Seefig4-15viewA)Thear

8、misjoinedtotheshaftbyapinsothatitcanbeswungbackandforth,asindicatedinviewB。Next,aringisplacedaroundtheshaftandsecuredtothero