Calculo de Oreja de Izaje

Standard: ASME BTH-1-2008

Datos de Entrada:

Categoria de A
Izaje
Nd = 2.00
Dp = 2.75 in
Dh = 3.00 in
t= 4.00 in
a= 3.50 in
be = 3.50 in

Material ASTM A36

Fy 36 ksi
Fu 58 ksi
Datos de Salida:
beff1 = 16.00 in
beff2 = 3.13 in
beff = 3.13 in
r= 5.00 in
R= 5.00 in
Efecto por el Diametro del Pin:
Dp/Dh = 0.92
Cr = 1.00
phi = 50.42 °
Z= 4.00 in
Z' = 0.1136 in
Av = 31.08 in^2
Resistencia Admisible:
Pt = 605.59 kips
Pb = 525.98 kips
Pv = 525.81 kips
Pp = 247.50 kips

Max. P = 247.50 kips

Max. P = 112.50 Ton

Dimensional Rules of Thumb:

For Dp < 2":
Dh = Dp + 1/8"

For Dp >= 2":

Dh = Dp + 1/4"

References:
1. "Design of below-the-hook lifting devices, ASME BTH-1-2008", New York.
 Calculo de Oreja de Izaje
E BTH-1-2008

Descripcion

Categoria de Izaje según el Standard

Factor de Seguridad recomendado por el Standard
Diametro del Pin
Diametro del Agujero
Espesor de la Oreja de Izaje
Carne de la Oreja de Izaje
Distancia minima entre el Agujero y el Borde de la Placa de la Oreja de Izaje

Material
Esfuerzo de Fluencia
Esfuerzo de Rotura

Ancho Efectivo 1, para cada lado del agujero del Pin

Ancho Efectivo 1, para cada lado del agujero del Pin
Ancho Efectivo: Minimo Valor de "be", "beff1" y "beff2"
Radio de Curvatura de la Oreja de Izaje (Perfil Circular)
Radio de Curvatura de la Oreja de Izaje (Perfil Circular)

Relacion entre el Diametro del Pin y el Diametro del Agujero. Si Dp/Dh > 0.90, entonces Cr=1
Factor de reduccion de resistencia para conexiones de Placa-Pin
Angulo de Contacto entre el Pin y la Oreja de Izaje
Longitud del Plano de Corte en la Conexión Placa-Pin
Perdida de Longitud del Plano de Corte en la Conexión Placa-Pin
Area de Total de los 2 Planos de Corte fuera del Agujero del Pin

Resistencia a la Tension Permisible a traves del Agujero del Pin

Resistencia a la Fractura Permisible de un Plano Unico
Resistencia al Corte Permisible de Doble Plano
Resistencia al Aplastamiento entre el Pin y la Placa

Carga Admisible: Minimo Valor de "Pt", "Pb", "Pv" y "Pp"

of Thumb:
Dp + 1/8"

Dp + 1/4"

the-hook lifting devices, ASME BTH-1-2008", New York.

 Referencia

ASME Equation (3-47)

ASME Equation (3-48)

ASME Equation (3-46)

ASME Equation (3-52)
ASME Equation (3-51)
ASME Equation (C3-2)
ASME Equation (3-51)

ASME Equation (3-45)

ASME Equation (3-49)
ASME Equation (3-50)
ASME Equation (3-53)
 Calculo de Oreja de Izaje
Standard: ASME BTH-1-2008

Categoria A
Ancho
del Diametro del Espesor
Grillete Dimensiones (in) Diametro Carne Efectivo Nd 2
Pin (in) Agujero (in) (in) (in) (in) Carga Admisible
Item G-209 A B C Dp Dh t a be klb Ton
1 3/4 1.25 0.88 2.81 0.88 1.005 1/2 1 1 9.90 4.50
2 3/4 1.25 0.88 2.81 0.88 1.005 3/4 1 1 14.85 6.75
3 3/4 1.25 0.88 2.81 0.88 1.005 1 1 1 19.80 9.00
4 3/4 1.25 0.88 2.81 0.88 1.005 1/2 1 1/4 1 1/4 9.90 4.50
5 3/4 1.25 0.88 2.81 0.88 1.005 3/4 1 1/4 1 1/4 14.85 6.75
6 3/4 1.25 0.88 2.81 0.88 1.005 1 1 1/4 1 1/4 19.80 9.00
7 3/4 1.25 0.88 2.81 0.88 1.005 1/2 1 3/8 1 3/8 9.90 4.50
8 3/4 1.25 0.88 2.81 0.88 1.005 3/4 1 3/8 1 3/8 14.85 6.75
9 3/4 1.25 0.88 2.81 0.88 1.005 1 1 3/8 1 3/8 19.80 9.00
10 3/4 1.25 0.88 2.81 0.88 1.005 1/2 1 1/2 1 1/2 9.90 4.50
11 3/4 1.25 0.88 2.81 0.88 1.005 3/4 1 1/2 1 1/2 14.85 6.75
12 3/4 1.25 0.88 2.81 0.88 1.005 1 1 1/2 1 1/2 19.80 9.00
13 1 1.69 1.13 3.75 1.13 1.255 3/4 1 1/4 1 1/4 19.07 8.67
14 1 1.69 1.13 3.75 1.13 1.255 3/4 1 1/2 1 1/2 19.07 8.67
15 1 1.69 1.13 3.75 1.13 1.255 3/4 1 3/4 1 3/4 19.07 8.67
16 1 1.69 1.13 3.75 1.13 1.255 3/4 2 2 19.07 8.67
17 1 1.69 1.13 3.75 1.13 1.255 1 1 1/4 1 1/4 25.43 11.56
18 1 1.69 1.13 3.75 1.13 1.255 1 1 1/2 1 1/2 25.43 11.56
19 1 1.69 1.13 3.75 1.13 1.255 1 1 3/4 1 3/4 25.43 11.56
20 1 1.69 1.13 3.75 1.13 1.255 1 2 2 25.43 11.56
21 1 1.69 1.13 3.75 1.13 1.255 1 1/2 1 1/4 1 1/4 38.14 17.34
22 1 1.69 1.13 3.75 1.13 1.255 1 1/2 1 1/2 1 1/2 38.14 17.34
23 1 1.69 1.13 3.75 1.13 1.255 1 1/2 1 3/4 1 3/4 38.14 17.34
24 1 1.69 1.13 3.75 1.13 1.255 1 1/2 2 2 38.14 17.34
25 1 1/4 2.03 1.38 4.69 1.38 1.505 3/4 1 1/2 1 1/2 23.29 10.59
26 1 1/4 2.03 1.38 4.69 1.38 1.505 3/4 1 3/4 1 3/4 23.29 10.59
27 1 1/4 2.03 1.38 4.69 1.38 1.505 3/4 2 2 23.29 10.59
28 1 1/4 2.03 1.38 4.69 1.38 1.505 3/4 2 1/4 2 1/4 23.29 10.59
29 1 1/4 2.03 1.38 4.69 1.38 1.505 1 1 1/2 1 1/2 31.05 14.11
30 1 1/4 2.03 1.38 4.69 1.38 1.505 1 1 3/4 1 3/4 31.05 14.11
31 1 1/4 2.03 1.38 4.69 1.38 1.505 1 2 2 31.05 14.11
32 1 1/4 2.03 1.38 4.69 1.38 1.505 1 2 1/4 2 1/4 31.05 14.11
33 1 1/4 2.03 1.38 4.69 1.38 1.505 1 1/2 1 1/2 1 1/2 46.58 21.17
34 1 1/4 2.03 1.38 4.69 1.38 1.505 1 1/2 1 3/4 1 3/4 46.58 21.17
35 1 1/4 2.03 1.38 4.69 1.38 1.505 1 1/2 2 2 46.58 21.17
36 1 1/4 2.03 1.38 4.69 1.38 1.505 1 1/2 2 1/4 2 1/4 46.58 21.17
37 1 3/4 2.88 2 7 2 2.125 1 2 1/4 2 1/4 45.00 20.45
38 1 3/4 2.88 2 7 2 2.125 1 2 1/2 2 1/2 45.00 20.45
39 1 3/4 2.88 2 7 2 2.125 1 3 3 45.00 20.45
40 1 3/4 2.88 2 7 2 2.125 1 1/2 2 1/4 2 1/4 67.50 30.68
41 1 3/4 2.88 2 7 2 2.125 1 1/2 2 1/2 2 1/2 67.50 30.68
42 1 3/4 2.88 2 7 2 2.125 1 1/2 3 3 67.50 30.68
43 1 3/4 2.88 2 7 2 2.125 2 2 1/4 2 1/4 90.00 40.91
44 1 3/4 2.88 2 7 2 2.125 2 2 1/2 2 1/2 90.00 40.91
45 1 3/4 2.88 2 7 2 2.125 2 3 3 90.00 40.91
46 1 3/4 2.88 2 7 2 2.125 2 1/2 2 1/4 2 1/4 112.50 51.14
47 1 3/4 2.88 2 7 2 2.125 2 1/2 2 1/2 2 1/2 112.50 51.14
48 1 3/4 2.88 2 7 2 2.125 2 1/2 3 3 112.50 51.14
49 2 3.25 2.25 7.75 2.25 2.5 1 1/2 2 1/2 2 1/2 75.94 34.52
50 2 3.25 2.25 7.75 2.25 2.5 1 1/2 3 3 75.94 34.52
51 2 3.25 2.25 7.75 2.25 2.5 1 1/2 3 1/2 3 1/2 75.94 34.52
52 2 3.25 2.25 7.75 2.25 2.5 2 2 1/2 2 1/2 101.25 46.02
53 2 3.25 2.25 7.75 2.25 2.5 2 3 3 101.25 46.02
54 2 3.25 2.25 7.75 2.25 2.5 2 3 1/2 3 1/2 101.25 46.02
55 2 3.25 2.25 7.75 2.25 2.5 2 1/2 2 1/2 2 1/2 126.56 57.53
56 2 3.25 2.25 7.75 2.25 2.5 2 1/2 3 3 126.56 57.53
57 2 3.25 2.25 7.75 2.25 2.5 2 1/2 3 1/2 3 1/2 126.56 57.53
58 2 3.25 2.25 7.75 2.25 2.5 3 2 1/2 2 1/2 151.88 69.04
59 2 3.25 2.25 7.75 2.25 2.5 3 3 3 151.88 69.04
60 2 3.25 2.25 7.75 2.25 2.5 3 3 1/2 3 1/2 151.88 69.04
61 2 1/2 4.13 2.75 10.5 2.75 3 2 3 3 123.75 56.25
62 2 1/2 4.13 2.75 10.5 2.75 3 2 3 1/2 3 1/2 123.75 56.25
63 2 1/2 4.13 2.75 10.5 2.75 3 2 4 4 123.75 56.25
64 2 1/2 4.13 2.75 10.5 2.75 3 2 5 5 123.75 56.25
65 2 1/2 4.13 2.75 10.5 2.75 3 2 1/2 3 3 154.69 70.31
66 2 1/2 4.13 2.75 10.5 2.75 3 2 1/2 3 1/2 3 1/2 154.69 70.31
67 2 1/2 4.13 2.75 10.5 2.75 3 2 1/2 4 4 154.69 70.31
68 2 1/2 4.13 2.75 10.5 2.75 3 2 1/2 5 5 154.69 70.31
69 2 1/2 4.13 2.75 10.5 2.75 3 3 3 3 185.63 84.38
70 2 1/2 4.13 2.75 10.5 2.75 3 3 3 1/2 3 1/2 185.63 84.38
71 2 1/2 4.13 2.75 10.5 2.75 3 3 4 4 185.63 84.38
72 2 1/2 4.13 2.75 10.5 2.75 3 3 5 5 185.63 84.38
73 2 1/2 4.13 2.75 10.5 2.75 3 4 3 3 247.50 112.50
74 2 1/2 4.13 2.75 10.5 2.75 3 4 3 1/2 3 1/2 247.50 112.50
75 2 1/2 4.13 2.75 10.5 2.75 3 4 4 4 247.50 112.50
76 2 1/2 4.13 2.75 10.5 2.75 3 4 5 5 247.50 112.50
 Categoria B
Nd 3
Carga Admisible
klb Ton
6.60 3.00
9.90 4.50
13.20 6.00
6.60 3.00
9.90 4.50
13.20 6.00
6.60 3.00
9.90 4.50
13.20 6.00
6.60 3.00
9.90 4.50
13.20 6.00
12.71 5.78
12.71 5.78
12.71 5.78
12.71 5.78
16.95 7.70
16.95 7.70
16.95 7.70
16.95 7.70
25.43 11.56
25.43 11.56
25.43 11.56
25.43 11.56
15.53 7.06
15.53 7.06
15.53 7.06
15.53 7.06
20.70 9.41
20.70 9.41
20.70 9.41
20.70 9.41
31.05 14.11
31.05 14.11
31.05 14.11
31.05 14.11
30.00 13.64
30.00 13.64
30.00 13.64
45.00 20.45
45.00 20.45
45.00 20.45
60.00 27.27
60.00 27.27
60.00 27.27
75.00 34.09
75.00 34.09
75.00 34.09
60.53 27.51
60.53 27.51
60.53 27.51
67.50 30.68
67.50 30.68
67.50 30.68
84.38 38.35
84.38 38.35
84.38 38.35
101.25 46.02
101.25 46.02
101.25 46.02
82.50 37.50
82.50 37.50
82.50 37.50
82.50 37.50
103.13 46.88
103.13 46.88
103.13 46.88
103.13 46.88
123.75 56.25
123.75 56.25
123.75 56.25
123.75 56.25
165.00 75.00
165.00 75.00
165.00 75.00
165.00 75.00
 Grillete de Perno Rosca

Tamaño Carga Limite Dimensiones (i

Nominal de Trabajo Peso (lb)
Unitario
(in) (t) A B C D E
3/16 1/3 0.06 0.38 0.25 0.88 0.19 0.6
1/4 1/2 0.1 0.47 0.31 1.13 0.25 0.78
5/16 3/4 0.19 0.53 0.38 1.22 0.31 0.84
3/8 1 0.31 0.66 0.44 1.44 0.38 1.03
7/16 1 1/2 0.38 0.75 0.5 1.69 0.44 1.16
1/2 2 0.72 0.81 0.63 1.88 0.5 1.31
5/8 3 1/4 1.37 1.06 0.75 2.38 0.63 1.69
3/4 4 3/4 2.35 1.25 0.88 2.81 0.75 2
7/8 6 1/2 3.62 1.44 1 3.31 0.88 2.28
1 8 1/2 5.03 1.69 1.13 3.75 1 2.69
1 1/8 9 1/2 7.41 1.81 1.25 4.25 1.16 2.91
1 1/4 12 9.5 2.03 1.38 4.69 1.29 3.25
1 3/8 13 1/2 13.53 2.25 1.5 5.25 1.42 3.63
1 1/2 17 17.2 2.38 1.63 5.75 1.54 3.88
1 3/4 25 27.78 2.88 2 7 1.84 5
2 35 45 3.25 2.25 7.75 2.08 5.75
2 1/2 55 85.75 4.13 2.75 10.5 2.71 7.25
e de Perno Roscado G-209

Dimensiones (in) Tolerancia +/- (in)

F G H L M P C
0.56 0.98 1.47 0.16 1.14 0.19 0.06
0.61 1.28 1.84 0.19 1.43 0.25 0.06
0.75 1.47 2.09 0.22 1.71 0.31 0.06
0.91 1.78 2.49 0.25 2.02 0.38 0.13
1.06 2.03 2.91 0.31 2.37 0.44 0.13
1.19 2.31 3.28 0.38 2.69 0.5 0.13
1.5 2.94 4.19 0.44 3.34 0.69 0.13
1.81 3.5 4.97 0.5 3.97 0.81 0.25
2.09 4.03 5.83 0.5 4.5 0.97 0.25
2.38 4.69 6.56 0.56 5.13 1.06 0.25
2.69 5.16 7.47 0.63 5.71 1.25 0.25
3 5.75 8.25 0.69 6.25 1.38 0.25
3.31 6.38 9.16 0.75 6.83 1.5 0.25
3.63 6.88 10 0.81 7.33 1.62 0.25
4.19 8.86 12.34 1 9.06 2.25 0.25
4.81 9.97 13.68 1.22 10.35 2.4 0.25
5.69 12.87 17.84 1.38 13 3.13 0.25
Tolerancia +/- (in)

A
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.13
0.13
0.13
0.13
0.25