= = = = = = = = = = = = = = 满足要求
Fh*H 407378.4
[(2*S+T)*(2(R+S))^3-T(2R)^3]/12
N.mm MPa MPa
1134272.0
[(2(R+S)*(2*S+T)^3-2R*T^3]/12
140992.0 Ihx'/(R+S) 24658.1 Ihy'/(t/2+S) 10070.9 Mh'cosβ /Whx' + Mh'sinβ /Why' 34.5 SQRT[(σ a+σ h') +4τ a ) 46.924 < υ a*[σ ]L=79.1MPa
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 ]L υa S K Q = = = = = = Q235-B 113.0 169.5 113.0 79.1 0.7 6.0 2.0 2400.0 23520.0 MPa MPa MPa MPa mm Kg N
2 模型简化纸 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
R d t H H1 n α β D
= = = = = = = =
40.0 30.0 16.0 60.0 60.0 4.0 60.0 30.0 22.0
mm mm mm mm mm ° ° mm
2 2
Mpa Mpa
z
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)*S 1100.0
Fv/(0.707*2*H1*S)
mm
2
23.1 < [τ ]L=79.1MPa
MPa
综上所述本设备所选吊耳是安全的
吊索方向最大剪应力
τ
L
= =
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
σ
v
= = = = = = = = = = = =
MPa N.mm mm4 mm4
Mh Ihx Ihy Whx Why σ
h
Mpa <1
σ v/[σ ]L+σ h/[σ ]M
= 满足要求
4 吊耳板角焊缝应力校核
3 吊耳板应力校核
竖向载荷： 吊索方向载荷： FV FL = = = = K*Q/n 11760.0 FV/sinα 13579.3 N N
水平方向载荷： 应力校核 吊索方向最大拉应力
FH
FL*cosα 6789.6
σ
L
=
FL/((2*R-d)*T) 17.0 < [σ ]L=113MPa (3/2)*(FL/2)/[(R-d/2)*T] 25.5 < [τ ]L=79.1MPa FL/[D*T] 38.6 < [σ ]C=169.5MPa Fv/(2*R*T) 9.2 Fh*H 407378.4 (2*R)^3*t/12 682666.7 2*R*t^3/12 27306.7 Ihx/R 17066.7 Ihy/(t/2) 3413.3 Mhcosβ /Whx + Mhsinβ /Why 80.3 0.792 MPa
对端面角焊接方式 角焊缝面积 A = = 2*（2R*S+T*S) 1152.0 mm2
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 σ
a
= = = =
FH/(2*2R*S)
7.1 FV/A 10.2
MPa MPa
Mh' Ihx' Ihy' Whx' Why' σ h' 危险点组合应力(偏保守) σ