轴式吊耳计算书

1、AX型轴式吊耳的计算项目号 ITEM NO.Calculation of Type AX Trunnion Lug文件号 DOC. NO.本计算书是参照HG/T21574-2008编制的。This calculation sheet is prepared referring to HG/T 21574-2008.输入数据即可自动计算输输入入数数据据 Input Data设备起吊重量 Equipment lifting weightQ =kg轴式吊耳的数量 Trunnion numbern =管轴材料 Material of trunnion管轴材料在常温的屈服强度s1=MPaYield st

2、rength of trunnion material at ambient temp.管轴外径 Diameter of trunnionDO =mm管轴有效厚度 Effective thickness of trunnionS =mm管轴长度 Length of trunnionL =mm垫板厚度 Thickness of padS=mm壳体材料 Shell material壳体材料在常温的屈服强度s2=MpaYield strength of shell material at ambient temp.管轴与壳体连接焊缝根部的宽度 Bottom width of groovea =mmW

3、eld attaching trunnion to shell 焊缝系数 weld coefficient=钢丝绳与垂直面的夹角 Angle of sling =综合影响系数 Dynamic factorc =许许用用应应力力 Allowable stress:管轴的许用拉伸和弯曲应力Allowable tensile and compressive stress of trunnion material =s1/1.50.00 Mpa管轴的许用剪应力 Allowable shear stress of trunnion=0.60.00 Mpa管轴与壳体连接焊缝的许用拉伸和弯曲应力 Allow

4、able tensile andbending stress of welds attaching trunnion to shell w=MIN(s1/1.5,s2/1.5)0.00 Mpa焊缝的许用剪应力 Allowable shear stress of weldw=0.6w0.00 Mpa管管轴轴强强度度校校核核 Checking strength of trunnion:垂直力 Vertical forceFv =Q / n9.81c#DIV/0!N水平力 Horizontal forceFh =Fvtan#DIV/0!N纵向弯矩 Longitudinal bending momen

5、tM =FvL#DIV/0!Nmm管轴横截面积 Cross-sectional area of trunnnion A =(DO-S)S0.00 mm2管轴内外径比值 Ratio of inside diametr to outside diameter=(DO-2S)/DO#DIV/0!管轴的惯性矩 Moment of inertiaJ =DO4(1-4)/64#DIV/0!mm4管轴的断面模数 Section modulusW =J / (0.5DO)#DIV/0!mm3#DIV/0!Lt =Fh / A#DIV/0!MPa弯曲应力 Bending stress Lb =M / W#DIV

6、/0!MPa组合应力 Combined stressL =|Lt| + Lb#DIV/0!MPa#DIV/0!剪切应力 Shear stress =Fv / A#DIV/0!MPa#DIV/0!焊焊缝缝强强度度校校核核 Checking strength of welds焊缝底部的外径 Outside diameter of root of weldDO1=DO+2a0 mm焊缝根部的内外径比值Ratio of inside to outside diameter of weld root 1=DO/DO1#DIV/0!焊缝根部的截面积 Sectional area of weld rootA

7、1=(DO1-a)a0.00 mm2焊缝根部的惯性矩 Moment of inertia of weld root J1=DO14(1-14)/64#DIV/0!mm4焊缝根部的断面模数 Section modulus of weld rootW1=/(0.5DO1)#DIV/0!mm3弯矩 Bending momentM1=Fv(L+S)#DIV/0!N.mm#DIV/0!wt=Fh/A1#DIV/0!Mpa焊缝的弯曲应力 Bending stress of weldwb=M1/W1#DIV/0!Mpa焊缝的组合应力 Combined stress in weldw=wt+wb#DIV/0!

8、Mpa#DIV/0!焊缝的剪切应力 Shear stress of weldw =Fv/A1#DIV/0!MPa#DIV/0!44Calculation Sheet ofDoc. No._Tailing LugPage _of_Equipment empty weightQ = 0kgTailing lug numbern = 1Material of tailing lug0Allowable stress = 0MPaAllowable shear stress = 0MPaLug thicknessS = 16mmThickness of padS= 10mmLug base width

9、B = 175mmlength of tailing lugL = 140mmLength of momentL =L+S= 150mmLift hole diameterD = 50mmLength of RR = 50mmFillet weld coefficienta= 0.7Max.angle of sling = 30Dynamic factorc = 0F1 = Q / 2n9.8c= 0NF2 = F1tan= 0.00NF3 = F1 / cos= 0.00NStress check of lug at lug hole: 1= F3/(2R-D)Stensile stress= 0.00MPa l = lShear strees= 0.00MPa So, the lifting lug is adequate in this case. Stress check of lug at fillet weld:M = F2LLifting moment= 0NmmW = SB2 / 6Section modulus= 81666.66667mm32= M / WBending stress= 0.00MPa3= F1 / BStensile stress= 0.00MPa2 = F2 / BSShear strees= 0.00M