This standard specifies the product classification, technical requirements, test methods, inspection rules, etc. of marine swivel shackles. This standard applies to swivel shackles used to connect anchors and grade 2 and grade 3 anchor chains. GB/T 14526-1993 Marine swivel shackles GB/T14526-1993 Standard download decompression password: www.bzxz.net

UIXC 629. 12. 011.7
National Standard of the People's Republic of China
GB/T 14526—93
Ships' swivel shackle
Ships' swivel shackle
1993-07-21Promulgated
State Bureau of Technical Supervision
1994-03-01Implementation
W.National Standard of the People's Republic of China
Ships' swivel shackle
Subject content and scope of application
CB/T14526-93
This standard specifies the product classification, technical requirements, test methods, inspection rules, etc. of ship's swivel shackles (hereinafter referred to as swivel shackles). This standard applies to swivel shackles used for connecting staggered and 2nd and 3rd grade chain: 2 Product classification
2.1 Type classification of swivel shackles According to Table 1,
Type A swivel shackle I
Type H swivel shackle
Note: DAM2 indicates that the swivel shackle material is 2nd grade anchor chain steel. 2AM3 indicates that the swivel shackle material is 3rd grade anchor chain steel, bzxz.net
Connection method with anchor
Directly connected with anchor rod, not suitable for auxiliary shackle connection Directly connected with anchor shackle Can also be connected with staggered rod 2.2 The connection method of type A swivel shackle is shown in Figure 1, and the structural type and basic dimensions are shown in Figure 2 and Tables 2 and 3. Length
No tooth chain ring
Swivel ring welcome
State Technical Supervision Bureau 1993-07-21 approved the addition of a ring
Only, human chain ring
Connect shoe ring
1994-03-01 implementation
W. View
Flexible chain
14,36..55
B/T14526--93
1 Pin end swivel; 2 Extinguish: 3 Horizontal pin: 4 Butterfly brown ：3 washer 5 carboxylic end swivel; 7 cone: 8--pin; 9-filler Table 2
W.Specifications
Anchor chain diameter
58.60, 62
.92.95
105, 157
111, 1t4, 117
Applicable anchor chain diameter
31, 36.38
10, 42
1n2100, 102
— 44x
GB/T1452693
Table 2
116
W.Specifications
Applicable anchor chain diameter.
105,107
111,114,112
GB/T14526--93
Continued Table 3
2.3 The connection method of type B swivel buckle is shown in Figure 3. The knot type and basic dimensions are as shown in Figures 4 and 4.a
Energy-saving buckle
Road shackle
Deep end swivel
Through swivel
1--Mn end swivel; 2 --Taper pin: 3-pin removal: 4 nut + 5 washer: 6-chain end swivel; 7 circular pin; 8-horizontal; 9--material 140
Connection mark
W. Specification
Applicable to pin chain
GB/T14525--93
W. Specification
Applicable to door chain
2.4 Marking example
［225
143℃
8！
GB/T14526:93
Continued table 4
Applicable to electric anchor chain chain diameter d=7%nHA type 2 chain swivel part buckle swivel machine A76AM2 Applicable to radium chain chain diameter d=73 TmII B grade pin chain steel swivel shackle model broken shackle 73 AM33 Technical requirements
Material connection of main parts of swivel shackle
Part name
End swivel
Chain end swivel
Grade 2 pin chain steel
Grade 3 anchor chain steel
GB/T1452693
GB/T1452693
W. Part name
Anchor pin
GB/T14526—93
Continued Table 5
3.22-grade anchor chain steel, 3-grade anchor chain steel can be made of forged steel or cast steel, mechanical properties are shown in Table 6.6
2-grade anchor chain
"-grade shaft energy clamp
Tensile strength
N/mmm2
490--690
(L.--. h VA )
Compound V-type fast: T impact test
Test temperature [. Average impact energy
Sectional shrinkage
3.3 Cast steel swivel shackle: After carefully removing the molding sand, holes, burrs and other uneven places formed by the wall and the mold dislocation, each part should be inspected for appearance. The defects that affect the strength of the parts (such as pores, more holes, etc.) shall not exceed the following specifications: When the chain diameter d-25~46mm, 4 places;
Chain law d=45 mm, 7 places,
When the depth of the above casting defects exceeds 5 of the chain, or the total depth of defects on the same surface exceeds 5 of the chain diameter, it must be repaired by welding. 3.4 The dimensional tolerances of each part shall comply with Table 7
L, BS, h
3.5 The assembled swivel shackle shall be rotated and subjected to tensile test and breaking test. After the tensile test, the swivel shackle shall be able to rotate flexibly without leakage or long-term deformation.
4 Test method
4.1 Each sample shall be visually inspected by a tensile tester. 4.2 Breaking test
During the breaking test, the tensile force shall be gradually and evenly applied to the specimen to the breaking load specified in Table 8. The specimen shall be placed before the specified breaking load is applied. Those without fracture are considered qualified.
4.3 Tensile test
4.3.1 After the tensile test is qualified, the force test can be carried out. 4.3.2 Gradually increase the tensile test load to the load specified in Table 8, maintain it for 5 minutes and then gradually unload it. Put the swivel shackle after the tensile test in place, and rotate the swivel shackle manually. The rotation should be flexible. W.bzsoso:com Specifications
Test acid load
Tensile load
Tensile breaking load
5 Inspection rules
GB/T1452693
Pressure load
12r0,0
2 135. Door
:1 966. :
Test load
Tension loadBreaking load
Tension joint
3 850,
260, 0
1 5 12c. 0
5 336, 9
± 300. )
4 609, 0
j osnt
4a,06180.c
4 940, 0
The swivel unloader should be inspected by the inspection department of the manufacturer and accepted by the ship, and a product certificate and ship inspection certificate shall be issued. 5.1
5.2 Tensile test Dynamic test Frequency penetration Food selection F 690.S
5.3 Between the same materials! The swivels forged with the same diameter and the swivels with the same smelting furnace with different seam diameters shall not exceed 50 pieces per group, and 10 pieces shall be selected for the control breaking test. If the tensile test fails, a retest may be conducted with two times the test load. During the retest, even if 10 pieces of the test sample breaks when the test load is equal to or less than the tensile load, all the swivels cast from the molten steel of the furnace shall be heat treated and resubmitted for testing. If the test after heat treatment still fails, all of them shall not be accepted. 5.4 The swivel shackle samples after the tensile test cannot be used as products. 6 Marking and packaging
6.1 Marking
6.1.1 The swivel buckles that have passed the acceptance shall be marked with the following marks Mark: a. Manufacturer code:
b. Product mark,
Ship Inspection Bureau stamp:
Date of manufacture:
Tensile test load:
I. Ship inspection certificate number.
6.1.2 See Figure 2 and Figure 4 for the printing position of the mark. 6.2 Packaging
6.2.1 Anti-rust oil should be applied to the outer surface of the parts.
6.2.2 The product certificate and ship inspection certificate should be attached when packaging. Additional instructions:
This standard was proposed by China State Shipbuilding Corporation. This standard is under the jurisdiction of Jiangnan Shipyard.
This standard was drafted by Dalian Ship Design Institute. The main drafters of this standard are Cai Weixuan and Rong Jialong. W.bzsoso: com
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