重型采煤機(jī)齒軌輪嚙合研究.pdf

1、學(xué)位論文獨(dú)創(chuàng)性說明本人鄭重聲明：所呈交的學(xué)位論文是我個(gè)人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及其取得研究成果。盡我所知，除了文中加以標(biāo)注和致謝的地方外，論文中不包含其他人或集體已經(jīng)公開發(fā)表或撰寫過的研究成果，也不包含為獲得西安科技大學(xué)或其他教育機(jī)構(gòu)的學(xué)位或證書所使用過的材料。與我一同工作的同志對(duì)本研究所做的任何貢獻(xiàn)均已在論文中做了明確的說明并表示了謝意。學(xué)位論文作者簽名：日期：Subject:StudyonCogWheelEngagementin

2、HeavyShearerSpecialty:MechanicalEngineeringName:ZhangYongquan(Signature)Instruct:XueHe(Signature)BaiXixun(Signature)ABSTRACTThehaulagemodeofmodernshearerismainlycogwheelpintrackchainlesstractioncogwheelisusedasimptantmec

3、hanismtotransmittquedriveshearerwalkingisalsooneofthekeypartsofshearer.Withtotalpowerincreasingtheweightofmachinebodyisbiggerbiggerhowevertheservicelifebecomesshter.Thispaperusestheeticalanalysiscombinedwithinfiniteeleme

4、ntmethodtosimulatecompareengagementacteristicofhomemadefeigncogwheelunderdifferentcenterdistances.Themainfinishedresearchwksareasfollows:(1)Itusestheeticalanalysistostudytherestraintrelationshipofthreematchedmachines—the

5、shearerconveyhydraulicsupptitconcludesthatthecogwheelshouldbeadaptedtospecificparametersincludingvariablecenterdistancevariablepitchetc.(2)Itsummarizesanalyzesthefailuresofhomemade147mmpitchcogwheelintheprocessofoperatio

6、npointsouttheproblemsofcurrentcogwheelshapeareshtmatingsurfaceunreasonabletoothcurvenarrowtoothroot.(3)ItusessoftwareABAQUStobuildthefiniteelementmodelsofhomemadecogwheelthefeignoneengagingwithpinrackseparatelyunderdiffe

7、rentcenterdistances.Theresultssuggest:ThefeigncogwheelisbetterthanthehomemadeengagingwithpinrackseparatelyunderstardcenterdistancemaximumcenterdistanceEngagingwithpinrackunderminimumcenterdistanceboththefluctuationamplit

8、udeofcontactstressofthefeigncogwheelarebiggerthanthedomesticbutthefluctuationofbendingstressoftoothrootisverystablethepeakvalueissmallerthanthedomestic’s.(4)TwospecimenshadbeenManufacturedaccdingtothefeigncogwheeltoothpr