轴式吊耳计算书

ThiscalculationsheetispreparedreferringtoHG/T21574-2008.设备起吊重量EquipmentliftingweightQ=kg轴式吊耳的数量Trunnionnumbern=管轴材料MaterialoftrunnionYieldstrengthoftrunnionmaterialatambienttemp.管轴外径DiameteroftrunnionDO=mmS=mm管轴长度LengthoftrunnionL=mm垫板厚度ThicknessofpadS'=mm壳体材料ShellmaterialYieldstrengthofshellmaterialatambienttemp.Weldattachingtrunniontoshell焊缝系数weldcoefficientΦ=钢丝绳与垂直面的夹角Angleofslingα=°综合影响系数Dynamicfactorc=许用应力Allowablestress:[σ]=σs1/1.50.00Mpa项目号ITEMNO.文件号DOC.NO.MpaMPa输入数据即可自动计算σs1=a=壳体材料在常温的屈服强度管轴与壳体连接焊缝根部的宽度Bottomwidthofgroove管轴的许用拉伸和弯曲应力Allowabletensileandcompressivestressoftrunnionmaterialσs2=管轴材料在常温的屈服强度本计算书是参照HG/T21574-2008编制的。输入数据InputDataAX型轴式吊耳的计算CalculationofTypeAXTrunnionLug管轴有效厚度Effectivethicknessoftrunnionmm管轴的许用剪应力Allowableshearstressoftrunnion[τ]=0.6[σ]0.00Mpa[σ]w=Φ×MIN(σs1/1.5,σs2/1.5)0.00Mpa焊缝的许用剪应力Allowableshearstressofweld[τ]w=0.6[σ]w0.00Mpa管轴强度校核Checkingstrengthoftrunnion:垂直力VerticalforceFv=Q/n×9.81×c#DIV/0!N水平力HorizontalforceFh=Fv×tanα#DIV/0!N纵向弯矩LongitudinalbendingmomentM=Fv×L#DIV/0!N·mm管轴横截面积Cross-sectionalareaoftrunnnionA=π×(DO-S)×S0.00mm2α=(DO-2S)/DO#DIV/0!管轴的惯性矩MomentofinertiaJ=π×DO4×(1-α4)/64#DIV/0!mm4管轴的断面模数SectionmodulusW=J/(0.5DO)#DIV/0!mm3#DIV/0!σLt=Fh/A#DIV/0!MPa弯曲应力BendingstressσLb=M/W#DIV/0!MPa组合应力CombinedstressσL=|σLt|+σLb#DIV/0!MPa#DIV/0!剪切应力Shearstressτ=Fv/A#DIV/0!MPa#DIV/0!焊缝强度校核Checkingstrengthofwelds焊缝底部的外径OutsidediameterofrootofweldDO1=DO+2a0mmα1=DO/DO1#DIV/0!焊缝根部的截面积SectionalareaofweldrootA1=π×(DO1-a)×a0.00mm2焊缝根部的惯性矩MomentofinertiaofweldrootJ1=π×DO14×(1-α14)/64#DIV/0!mm4焊缝根部的内外径比值Ratioofinsidetooutsidediameterofweldroot管轴内外径比值Ratioofinsidediametrtooutsidediameter管轴与壳体连接焊缝的许用拉伸和弯曲应力Allowabletensileandbendingstressofweldsattachingtrunniontoshell焊缝根部的断面模数SectionmodulusofweldrootW1=/(0.5DO1)#DIV/0!mm3弯矩BendingmomentM1=Fv×(L+S')#DIV/0!N.mm#DIV/0!σwt=Fh/A1#DIV/0!Mpa焊缝的弯曲应力Bendingstressofweldσwb=M1/W1#DIV/0!Mpa焊缝的组合应力Combinedstressinweldσw=σwt+σwb#DIV/0!Mpa#DIV/0!焊缝的剪切应力Shearstressofweldτw=Fv/A1#DIV/0!MPa#DIV/0!EquipmentemptyweightQ=0kgTailinglugnumbern=1Materialoftailinglug0Allowablestress[σ]=0MPaAllowableshearstress[τ]=0MPaLugthicknessS=16mmThicknessofpadS'=10mmLugbasewidthB=175mmlengthoftailinglugL=140mmLengthofmomentL'=L+S'=150mmLiftholediameterD=50mmLengthofRR=50mmFilletweldcoefficientΦa=0.7Max.angleofslingα=30°Dynamicfactorc=0F1=Q/2n×9.8×c=0NF2=F1×tanα=0.00NF3=F1/cosα=0.00NStresscheckoflugatlughole:σ1=F3/[(2R-D)×S]tensilestress=0.00MPa≤[σ]τl=σlShearstrees=0.00MPa≤[τ]So,theliftinglugisadequateinthiscase.Stresscheckoflugatfilletweld:M=F2×L'Liftingmoment=0N·mmW=SB2/6Sectionmodulus=81666.66667mm3σ2=M/WBendingstress=0.00MPaσ3=F1/BStensilestress=0.00MPaτ2=F2/BSShearstrees=0.00MPaσ=sqrt[(σ2+σ3)2+4τ22]CompositestressCalculationSheetofDoc.No._________TailingLugPage____of____44CalculationSheetofDoc.No._________TailingLugPage____of____=0.00MPaΦa[σ]=0.00MPaSinceσ≤Φa[σ],theliftinglugisadequateinthiscase.45