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1、摘要本文主要提供了一个国内液压行业的发展状况,内燃机活塞销孔的结构的现状,活塞销孔的破坏形式,机车内燃机活塞销润滑系统防漏检测及防漏检测装置的设计,销孔结构设计的有关知识等,在此基础上,提出了销孔表面应力分布的新理论和曲面销孔结构设计的相关内容,对验证销孔结构设计,防漏检测合理性、可行性的试验方法进行了描述。本论文的主要内容如下:1、分析机车内燃机活塞销润滑系统的工作情况,结构特点,润滑回路系统的工作原理,分析说明了销孔配合间隙的确定方法。2、探讨机车内燃机活塞销润滑回路的密封原理,并对检测装置拟定总体布置方案,并对方案进行可行性分析和论证
2、和方案进行总体设计和零部件设计。3、分析总结活塞销孔的失效形式,并对不同失效形式分析了原因。4、收集整理有关液压元件的样本和资料,了解国内液压行业的发展状况,根据活塞销润滑原理拟定检测装置液压系统原理图关键字:活塞、活塞销、活塞销孔、密封、润滑,液压系统AbstractThethesisstatescurrentstatusofpinbornconstructdesignofinternalcombustionenginepiston,breakageformofpistonpinbore,andtheconcernedknowledgeo
3、fconstructdesignofpinbore,etc.Itisbasedontheaboveknowledge,bringforwardanewtheorythatisstressdistributiononpinboresurfaceandcalculationmethodofcurvedfaceofpinboreconfiguration,usingfiniteelementanalysismethodtocalculatemechanicaldeformationofpinbore,pistontemperaturefielda
4、ndthermaldeformationofpinbore,anditalsodepictstheverificationmethodofrationalityofpinboreconstruct.Takingdesignofpistonconfigurationforexample,itanalyzesandcalculatestheconstructvalueofeachpartoncurvedfaceunderdifferentpinboreconfigurationdesigns:(1)Pinboretheoreticdiamete
5、r,(2)Equationofoutercurvedfaceofpinbore,(3)Equationofinnercurvedfaceofpinbore,(4)Stressdistributiononpinboresurface,(5)fatiguesafetyfactorofeachpartofpiston,etc.Accordingtotheanalysisresults,defineaoptimizedpinboresurfacedesign,whichwillguidepistonpinboredesigninfuture.The
6、maincontentofthethesisisasfollows:1.Summarizeessencerulesofpistonpinbossconfigurationandpinboresurfacedesign,includinghorizontalandverticalprofilerulesofpinbore,analyzeandspecifythedefinitionmethodofpinborefittingclearance.2.Analyzepistonforcereceiptedandmechanical&thermal
7、deformationofpinbore,ascertaincalculationmethodofmechanicalformation,thermaldeformationandintegrateddeformationofpinbore.3.Analyzeandsummarizedifferentdesignsofpinbore,andmakecomparisonsofdifferentdesignondecreasingmaximumvalueeffectofpinboresurfacestress.591.Bringforwardn
8、ewtheoryofstressdistributiononpinboresurface,presentacalculationmethodofpinborecurvedface