履带起重机准特性曲线设计原理研究

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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