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1、ii7 - International Standard 412712 INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWblEKC1YHAPO S : for welding (see right hand side of figures 1 and 2). 2.3 Nominal sizes The nominal diameter of a roller is the nominal size of roller fairleads, in millimetres. The nominal sizes are as follows : Type
2、 Z : 80, 100, 150 Type R : 80, 100, 125, 150 3 Dimensions and loading 3.1 The main dimensions and loadings of a roller fairlead are given in the figures and tables 1 and 2. 3.2 The maximum loading values are given in the tables of dimensions. In compliance with the nominal sizes, the max- imum diame
3、ter of steel and fibre rope is given. The basic loadings are : 75, 125, 220 kN. 4 Materials The following materials shall be usedfor manufacturing the fairleads : Body : weldable steel having a yield Point of 25 x 104 kN/m2 (25 kgf/mm% Roller : cast steel, or malleable cast iron having a yield Point
4、 of 24 x 104 kN/m2 (24 kgf/mmz). Bolt and axle : steel having a yield Point of 36 x 104 kN/m2 (36 kgf/mm% Bush : bronze. 5 Construction The construction of roller fairleads and the method of welding Parts shall be in accordance with the provisions of this Interna- tional Standard. 6 Finish 6.1 The b
5、ody shall be welded, with blunted edges and polished welds. 6.2 The rollers shall be cleaned castings, with smooth work- ing surfaces. 6.3 The bolt and socket shall be manufactured according to national Standards. Copyright International Organization for Standardization Provided by IHS under license
6、 with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 00:52:18 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4127/2-1980 (E) 1 View C C r-i-a Al , Securing m ethod P Securing method S Figure 1 - Common roller fairlead (Type 2) Table 1 - M
7、ain dimensions (Type 2) Size D” d 4 d2 d3 h 4 L 1 12 13 mm I 80 32 60 120 18 76 126 640 240 290 48 II 100 40 70 160 22 96 154 800 300 365 60 Ill 150 60 100 220 28 132 216 1 200 450 560 90 (contiwed) B 170 210 315 b 110 140 210 I bl b2 s Sl Nominal forte Maximum rope diameter P steel fibre, mm kN mm
8、48 44 20 16 75 13 36 60 58 24 20 125 20 48 90 82 36 30 220 33 72 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 00:52:18 MDTNo reproduction or networking permitted without lic
9、ense from IHS -,-,- ISO 4127/2=198O(E) View C I I method Pr”3 I Securing method Securing I ./ ./ 1 4 1 I / 7 B I / -Il / I i- Je- View B / 1 - f- /2 e L _ _. _ -.- _ - _. _ _. _ - - -_-.- - -.- -.- - Figure 2 - Roller fairleads with a collapsible roller (Type R) Table 2 - Main dimensions (Type R) Si
10、ze i II Ill IV 80 32 60 120 18 60 26 218 76 126 158 640 240 200 100 40 70 160 22 75 32 278 96 154 198 800 300 250 125 50 87 200 27 94 40 350 120 195 250 1000 375 310 150 60 100 220 28 110 48 392 132 216 282 1200 450 375 (continued) 1 l2 / l3 j s / s1 / B b bl - Nominal forte Maximum rope diameter P
11、I Pl steel 1 fibre kN I mm I mm 1 290 48 20 16 170 110 48 75 15 13 36 365 60 24 20 210 140 60 125 25 20 48 455 75 30 25 262 175 75 200 31 26 64 I 550 1 90 1 36 1 30 1 315 1 210 1 90 1 220 1 44 1 33 I 72 I 3 Copyright International Organization for Standardization Provided by IHS under license with I
12、SO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 00:52:18 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=
13、NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 00:52:18 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technic
14、al Standards 1/9972545001 Not for Resale, 04/27/2007 00:52:18 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 00:52:18 MDTNo reproduction or networking permitted without license from IHS -,-,-