吊耳计算表

吊耳计算书1 设计条件吊耳板材质：许用拉应力：许用接触应力：许用弯曲应力：许用剪应力：角焊缝系数吊耳焊角高度动载综合系数整体重量参照图纸[σ]L =[σ]C=1.5[σ]L =[σ]M=1.0[σ]L =[τ]L=0.7[σ]LυaSKQ = = = = = =Q235-B113.0169.5113.079.10.76.02.02400.023520.0MPaMPaMPaMPammKgN2 模型简化吊耳的力学模型简化为下图参照图纸吊耳尺寸吊耳数量索具与水平方向夹角水平面投影夹角吊勾直径RdtHH1nαβD = = = = = = ==40.030.016.060.060.04.060.030.022.0mmmmmmmmmm°°mm3 吊耳板应力校核竖向载荷：吊索方向载荷：FVFL = = = =K*Q/n11760.0FV/sinα13579.3NN水平方向载荷：应力校核吊索方向最大拉应力FHFL*cosα6789.6 σL=FL/((2*R-d)*T)17.0< [σ]L=113MPa(3/2)*(FL/2)/[(R-d/2)*T]25.5< [τ]L=79.1MPaFL/[D*T]38.6< [σ]C=169.5MPaFv/(2*R*T)9.2Fh*H407378.4(2*R)^3*t/12682666.72*R*t^3/1227306.7Ihx/R17066.7Ihy/(t/2)3413.3Mhcosβ/Whx + Mhsinβ/Why80.30.792MPa吊索方向最大剪应力 τL = =MPa接触应力 σc=MPa吊耳板垂直拉应力吊耳板最大弯曲正应力 σv============MPaN.mmmm4mm4MhIhxIhyWhxWhyσhMpa< 1σv/[σ]L+σh/[σ]M= 满足要求4 吊耳板角焊缝应力校核对端面角焊接方式角焊缝面积A = =2*（2R*S+T*S)1152.0mm2角焊缝剪应力角焊缝的拉应力角焊缝的最大弯曲正应力 τa σa = = = =FH/(2*2R*S)7.1FV/A10.2MPaMPaMh'Ihx'Ihy'Whx'Why'σh'危险点组合应力(偏保守)σ== = = = ========= 满足要求Fh*H407378.4[(2*S+T)*(2(R+S))^3-T(2R)^3]/12N.mmMPaMPa1134272.0[(2(R+S)*(2*S+T)^3-2R*T^3]/12140992.0Ihx'/(R+S)24658.1Ihy'/(t/2+S)10070.9Mh'cosβ/Whx' + Mh'sinβ/Why'34.5SQRT[(σa+σh')+4τa)46.924< υa*[σ]L=79.1MPa22MpaMpaz对侧面焊接方式角焊缝面积角焊缝的最大剪切应力A τa = = = = 满足要求2*（2R+H1)*S1100.0Fv/(0.707*2*H1*S)mm223.1< [τ]L=79.1MPaMPa综上所述本设备所选吊耳是安全的