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GB/T 29131-2012Wire rope isolator for ships (English PDF)

船用钢丝绳隔振器

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2012

Implementation date

July 1, 2013

Scope

GB/T 29131-2012 is the English-translated version of 船用钢丝绳隔振器.

GB/T 29131-2012 specifies the requirements, test methods, inspection rules, marking, packaging, transport and storage of marine wire rope isolators, called isolators throughout the text.

Clause 1 limits application to the design, manufacture and acceptance of wire rope isolators for shipboard electronic equipment, electronic control equipment and auxiliary equipment.

Clause 3 sets out the requirements, beginning with design: while meeting the static and dynamic performance conditions the isolator should occupy as little space as possible in the vertical, longitudinal and transverse directions; the clamp plates and the rope holes should be designed so that stress in the wire rope is kept to a minimum and the rope is held firmly without broken or flattened wires; and under vibration and shock the rope and the parts connected to it must not loosen or slip, the upper and lower clamps, the base and the clamp plate or screws having sufficient strength.

Clause 3.2 describes the structure, which is made up of the wire rope, the clamp plates and a base plate or screw members, with the rope fixed between plate and clamp board or screws and assembled as one unit, and two mounting arrangements, screw holes and through holes, the main external structure being shown in Annex A. Clause 3.3 covers installation, naming the flat position (Z direction) and the suspended position (X and Y directions) normally used on marine equipment and referring to Annex B. The normative references include GB/T 9944 for stainless steel wire rope, GB/T 15168 for the measurement of vibration and shock isolators, GJB 150.11, GJB 150.16 and GJB 150.18 for salt spray, vibration and shock environmental testing, and GJB 4000 for ships.

The standard was proposed by the China Shipbuilding Industry Corporation and is administered by the deck and engine room auxiliaries sub-committee of the national marine machinery standardization technical committee (TC137/SC2). It was issued on 2012-12-31 and has applied since 2013-07-01.

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Document preview — GB/T 29131-2012

National Standard of the People's Republic of China

ICS: 47.020.20
Classification: U 40

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Requirements

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Shipbuilding Industry Corporation.

1 Scope

This standard specifies the Marine Wire Rope Isolator (hereinafter referred to as isolator) requirements, test methods, inspection rules, marking, packaging, transportation And storage.

This standard applies to ships electronic equipment, electronic control equipment and auxiliary equipment such as wire rope isolator design, manufacture and acceptance.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 191 Packaging - Pictorial signs

GB/T 3098.6-2000 Mechanical properties of fasteners stainless steel bolts, screws and studs

GB/T 3280-2007 cold rolled stainless steel sheet and strip

GB/T 3880.1-2006 general industrial aluminum and aluminum alloy sheet, strip - Part 1: General requirements

GB/T 4237-2007 stainless steel hot rolled sheets and strips

GB/T 9944-2002 stainless steel wire rope

GB/T 15168-1994 Vibration and shock isolators measuring method

GJB150.11-1986 Environmental test methods for military equipments salt spray test

GJB150.16-1986 Environmental test methods for military equipments Vibration test

GJB150.18-1986 Environmental test methods for military equipments impact test

GJB4000-2000 Ship general specification

3 Requirements

3.1 Design

3.1.1 meet the static and dynamic performance conditions isolator in the vertical, longitudinal, lateral should occupy as small spatial dimensions.

3.1.2 Plywood and rope hole design should be considered to minimize the stress of wire rope, wire rope with plywood mating, it is necessary to do the rope Clamping, and will not produce broken wire, clip flat and so on.

3.1.3 between the rope and the components connected when subjected to vibration and shock, there should be no loosening and slippage, no wire breakage, Upper and lower jaw, bottom, card board (or screw) have sufficient strength.

3.2 Structure

Isolator by the rope on, wait plywood, pallets or screw member. Rope elastomer fixed plate and card board or screwed Fixed and integrally assembled. Isolator points screw mounting holes and vias in two forms. Isolator main external structure in Appendix A.

3.3 Installation

Isolator installation of marine equipment usually have flat position (Z direction), pendant (X, Y direction), etc., as shown in Appendix B.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 11038-2026|GB/T 25017-2026|GB/T 25018-2026|GB/T 47317-2026|GB/T 47707-2026|GB/T 47709-2026

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