大功率单节均衡梁式八轴机车动力学性能研究

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1、西南交通大学硕士学位论文大功率单节均衡梁式八轴机车动力学性能研究姓名：罗洪文申请学位级别：硕士专业：车辆工程指导教师：罗赟20080601西南交通大学硕士研究生学位论文第1I页AbstractThispapermainlystudiesondynamicperformanceoftheeight—axislocomotivefromtheperspectiveoflocomotivedynamics，preparingfortheoreticalbasistodevelopeight—axlelocomotive．Astheeigh

2、t—axislocomotivedrivingshaftsaremany,withtheaxlearrangementdifferentandthedifferentpatternsoflocomotivetraction，resultinginthestructureoftheeight·axlelocomotivebogievariousform．Selectingagoodprojectofthebogiestructureensuresthatthebogiestructuraldesignisreasonableanden

3、suresthelocomotivefullyexertscharacteristicsoftheheightoflocomotiveadhesionload，andensuresthelocomotiveisrunningwithstabilityandsmoothonthestraightlineandthroughtheCalVe．Thecommonwealthbogiestructureprojectwithexcellentdynamicperformanceisselectedbyanalysisofinsideando

4、utsidefour．axisbogieandtheexperienceofoverseasoperatinginstance．Mechanismanalysisshowsthemechanismofcommonwealthbogiehassexdegreeoffreedominfact．YawingandLateralplayofthewheelarecloselycorrelationwithlateralandlongitudinalstiffnessofguidepost，primarysuspensiondistancea

5、ndprimarylateralsuspensionstiffnessetc．LocomotiveadhesionloadisthemostinfluencedbytractionheightandthebestadhesionloadutilityfactoriSupto94．32％．Thelocomotivecanfullyexertcharacteristicsoftheheightoflocomotiveadhesionloadbydesigningrationaldrawgear．Dynamicsemulationanal

6、ysisindicatescommonwealthlocomotiveiSprovidedwithupperstability,andnon-linearitycriticalspeedisupto375km／h，anddynamicperformanceoflocomotiverunningonthestraightlineandthroughthecurvefulfilsdynamiccriterion．Studyingontheinfluenceofinstructureparametersondynamicperforman

7、cemakeschearcommonwealthlocomotivedynamicperformanceisgreatlyaffectedbylateralandlongitudinalstiffnessofguidepostandprimarylateralsuspensionstiffness．Butwhetherprimarylongitudinalsuspensionstiffnessisingearornot，whichisnotfatefultodynamicperformance，therebyachievingsep

8、aratebetweenprimarylongitudinalandlateralsuspensionstiffnessandmatchingprimarysuspensionparameterslogically．Primaryla