HP板式吊耳计算



HP型吊耳计算书

项目号 ITEM NO.

CALCULATION OF HP LUG

文件号 DOC. NO.

注：

本计算书是参照HG/T 21574-2008编制的。

1.黄色的背景是需要输入的项，红色字体为结果。

This calculation sheet is prepared referring to  HG/T 21574-2008.

2. a角一般小于等于30°，不宜过大

3. 考虑到垂直两组吊耳在起吊过程中可能有少许倾斜，故考虑侧向力F2,

输入数据 Input Data

若不考虑，可以将K值设为0。

4. T值需要测量得出，也可以根据下式得出:

吊耳板斜角θ

20

T=(R/cosθ+L*sinθ)*2=

308.60119

mm

设备空重Equipment empty weight

Q =

10000

kg

吊耳数量lifting lug number

n =

4

吊耳材料Material of lifting lug

Q235B

材料的许用应力Allowable tensile stress

[σ] =

134.4

MPa

许用剪切强度Allowable shear stress

[τ] =

94.08

Mpa

吊耳弯矩力臂lift moment arm

L =

140

mm

R的长度Length of R

R =

100

mm

吊耳孔的直径Lift hole diameter

D =

100

mm

吊索与垂直方向夹角angle of sling and vertical

α =

30

°

吊耳与垂直方向夹角angle of  lug layout

β=

45

°

角焊缝系数Fillet weld coefficient

Φa=

0.7

动载荷系数Composite factor of dynamic load

c =

1.65

侧向力所占比例The force of side face factor

k=

0.1

焊缝长度welding length

T=

308

mm

吊耳板厚度Lug thickness

S =

20

mm

设计计算 Checking strength

一对吊耳所受垂直力 The vertical force for a pair lifting lug

F=2×Q ×9.81×c/n=

80932.5

N

一个吊耳吊索方向力 The force for one lifting lug

F1=0.5×F/cosa=

46726.4

N

侧向力Yawing force

F2=k×F1=

4672.6

N

一个吊耳所有总力 The total force for one lifting lug

Fm=sqrt[F12+F22]=

46959.5

N

角度Angle

γ=α +β=

75.0

°

垂直力Vertical force

Fv =F1×cosγ=

12093.7

N

水平力Horizontal force

Fh =F1×sinγ=

45134.2

N

环向弯矩Circumference bending

M =Fh×L=

6318793.2

N·mm

纵向弯矩Longitudinal bending

M2=F2×L=

654169.6

N.mm

吊耳的最大拉伸应力(偏保守) Max.tensile stress at lifting lug from sling(lean to safe):

σl =Fm/[(2R-D)S]=

23.5

Mpa

Since σ1≤[σ]l ,the lifting lug is adequate in this case.

吊耳最大剪切应力 Max.shear stress at lifting lug from sling

τl =σl=

23.5

Mpa

Since τl≤[τ]l, the lifting lug is adequate in this case.

角焊缝校核 Fillet weld stress check of lifting lug:

角焊缝面积Area of fillet weld:

A =2TS=

12320.0

mm2

角焊缝拉伸应力 Tensile stress of fillet weld:

σat =Fv/A=

1.0

MPa

角焊缝剪切应力 Shear stress of fillet weld:

τa =Fh/A=

3.7

MPa

环向弯矩下的角焊缝应力 Circumference bending stress of fillet weld:

σab =6M/ST2

20.0

MPa

纵向弯矩下的角焊缝应力 Longitudinal Bending stress of fillet weld

σac =6M2/TS2=

31.9

MPa

角焊缝组合应力 Composite stress of fillet weld:

σa =sqrt[(σat+σab+σac)2+4τa2]=

53.3

MPa

角焊缝许用应力 Allowable stress of fillet weld:

[σ]a =

94.1

MPa

Since σa≤[σ]a , the lifting lug is adequate in this case.