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ID:34123062
大小:2.74 MB
页数:82页
时间:2019-03-03
《履带起重机准特性曲线设计原理研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、●l,东北大学硕士论文AbstractStudyontheDesignPrincipleoftheCrawlerCrane’SPseudo.CharacteristicCurveAbstractBoilersplayallimportantroleinthenationaleconomyconstruction,andthejibmetalstructureisonekindoftheimportantload-carryingcomponentsofcrawlercrane.Itsmechauicalpropertieshavedirectlyinfluenceonthewholema
2、chine’Srunning.However,nowjibdesigningisalsomostlymanualworkdonebythedesigner'sexperience,、vitllreferencetOrepresentativeprojects,whichissimplystudiedoutandperfected,lackingtheorybasis.Accordingtothepresentsituation,theauthorputsforwardtheconceptofcrawlercrane’spseudo—characteristiccurvetakingapr
3、acticalengineeringprojectasreference.Crawlercrane’spseudo—characteristiccurvediffersfromtheliftingcharacteristiccurve.ItistheliftingcharacteristiccRrveonlyconsidersthejib’Ss1[mctlJrewithoutconsideringcrawlercrane’Swholestructureduringconceptdesignphase.Itisthefoundationofdetaileddesignandhasguidi
4、ngsignificanceofmanipulatordesign.Crawlercrane’spseudo-characteristiccurve’sdesignbasesonthethreeknownparameters-maximumliftingload,thebasicarmlengthandthemaxlengthoftheboom.Fromthepointofviewofprincipledesign,havingmaximumliftingloadandthebasicarmlengthasknownparameters,basedonGB/T3811-2005andst
5、iffnessrequirement,strengthconditionstabilityconditionasdesigncriteria,theauthordeterminesfunctionalrelationshipbetweentheknownparametersandtheheightofthebasicjib,thewidthofthejib,themainchord’Ssectionalarea,internodelengthandthewebmember’Ssectionalarea.Basedontheprimarydesignofthebasicjib,theaut
6、hordeterminestherelevantstructureparametersofthestandardmastsection.Afterthepreliminarydesignofthejib,theauthordeterminesthepseudo-characteristiccurveandtheloaddiagramofthebasicjibbasedonstructuringprincipleofequalizingstressandconstantmoment.Basedontheanalysisandresearchabove,theauthordesignsthe
7、systemofcrawlercrane’Spseudo—characteristiccurveusingsoftwaredevelopedmethodofobjectoriented-VisualBasic2005andconnecting、)~rimMatlab7.1andAccessdatabase.ActualexaminationQUY630crawlercraneshowsthat,thissoftwarewellmee
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