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GB/T 5973-2006Cuneiform Connector for Use with Steel Wire Ropes (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Level / Type

National · Recommended

Issue date

April 3, 2006

Implementation date

September 1, 2006

Scope

GB/T 5973-2006 (Cuneiform Connector for Use with Steel Wire Ropes) is available as an English-translated PDF.

GB/T 5973-2006 is the Chinese standard "Cuneiform Connector for Use with Steel Wire Ropes". Its scope clause reads: This Standard specifies the types and dimensions, specifications, test method, inspection rules, and marking, packaging, transportation and storage of cuneiform connector for use with steel wire ropes.

This Standard applies to the cuneiform connector for use with round strand wire ropes fixed or connected at the end as specified in GB 8918-2006 and GB 20118-2006, which are used in all kinds of cranes (hereinafter referred to as cuneiform connector).

Its clauses include application scope; types and dimensions; mm ~ 20 mm) is designated as.; test method; inspection rules. It was issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on 2006-04-03 and took effect on 2006-09-01.

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Document preview — GB/T 5973-2006

National Standard of the People's Republic of China

ICS: 53.020.30
Classification: J 80

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Foreword...3
1 Application Scope...4
2 Normative References...4
3 Types and Dimensions...4
4 Specifications...7
5 Test Method...8
6 Inspection Rules...8
7 Marking, Packaging, Transportation and Storage...9
Annex A (Informative) Connection Method of Cuneiform Connector...11

Foreword

This Standard replaces GB/T 5973-1986, Cuneiform Connector for Use with Steel Wire

Ropes.

Compared with GB/T 5973-1986, the major changes of this Standard are as follows.

-- the "Foreword" is added;

-- the parameters of permissible stress and breaking load in Table 1 are modified.

The column of "cotter pin" is deleted;

-- the dimensions of B2, C1, C2 and H in Table 2 are adjusted;

-- the dimension of R5 in Table 3 is slightly adjusted, i.e. the wedge angle of wedge

is slightly greater than the wedge angle of wedge sleeve;

-- the sampling method is added in the inspection rules;

-- Annex A, Connection Method of Cuneiform Connector, is added.

Annex A to this Standard is informative.

This Standard was proposed by China Machinery Industry Federation.

This Standard shall be under the jurisdiction of National Technical Committee on

Hoisting Machinery of Standard Administration of China (SAC/TC 227).

The drafting organization of this Standard. Dalian Large Crane Co., Ltd.

1 Application Scope

This Standard specifies the types and dimensions, specifications, test method,

inspection rules, and marking, packaging, transportation and storage of cuneiform

connector for use with steel wire ropes.

This Standard applies to the cuneiform connector for use with round strand wire ropes

fixed or connected at the end as specified in GB 8918-2006 and GB 20118-2006, which

are used in all kinds of cranes (hereinafter referred to as cuneiform connector).

2 Normative References

The provisions in following documents become the provisions of this Standard through

reference in this Standard. For dated references, the subsequent amendments

(excluding corrigendum) or revisions do not apply to this Standard, however, parties

who reach an agreement based on this Standard are encouraged to study if the latest

versions of these documents are applicable. For undated references, the latest edition

of the referenced document applies.

GB 8918-2006, Steel Wire Ropes for Important Purposes

GB/T 9439-1988, Grey Iron Castings

GB/T 11352-1989, Carbon Steel Castings for General Engineering Purpose

GB/T 13384-1992, General Specification for Packaging of Mechanical and

Electrical Products

GB/T 20118-2006, Steel Wire Ropes for General Purpose

3 Types and Dimensions

3.1 Cuneiform connector

3.1.1 The types and dimensions of cuneiform connectors shall be as specified in

Figure 1 and Table 1.

3.1.2 Designation example

A cuneiform connector of specification 20 (the nominal diameter of steel wire ropes d >

18 mm ~ 20 mm) is designated as.

than the grey iron castings HT 200 specified in GB/T 9439-1988. When better materials

are used, the permissible load and breaking load in Table 1 may be increased

accordingly.

4.2 The surface of wedge sleeve and wedge shall be smooth; sharp edges and dead

heads shall be removed; and there shall be not defects which reduces the strength

significantly and obviously detrimental to the appearance (such as pores, cracks,

porosities, sand inclusions, casting scars and so on).

4.3 Wedge sleeve and wedge shall be annealed to eliminate their internal stress.

4.4 Wedge sleeve and wedge shall be treated for rustproofing.

4.5 Cuneiform connector shall be mounted properly in use. See Annex A for the

method for connecting cuneiform connector to steel wire ropes.

5 Test Method

5.1 During the first production, two groups of samples must be taken for the test of

the cuneiform connectors of the same specifications, materials and manufacturing

methods. During the test, first conduct preloading, and then gradually apply load to the

breaking load (see Table 1). During the loading process, the length of the free end of

steel wire ropes shall not become shorter. The test result. cracks of wedge sleeve and

wedge or any damage which affects their usability are not allowed. Both groups of

cuneiform connectors shall be as specified, and then the batch of cuneiform

connectors are acceptable. If one group in the two groups of cuneiform connectors is

not as specified, then take another two groups of samples from the batch of cuneiform

connectors to conduct the test; and if one more group fails to meet the requirements

or both groups fail to meet the requirements in the first test, then the batch of cuneiform

connectors are unacceptable.

5.2 In case of any change in the structural dimensions, material specifications and

manufacturing techniques of cuneiform connectors, the test shall be conducted for the

modified cuneiform connectors in accordance with the above-mentioned sample test.

6 Inspection Rules

6.1 Cuneiform connector shall be inspected by the supplier. The supplier shall ensure

each batch of cuneiform connectors are as specified in this Standard; and that they

shall be accompanied with the certificate of quality.

6.2 The double sampling method by the piece is used for the inspection. From one

batch of cuneiform connectors submitted for acceptance, take n1 groups of samples

randomly for each specification to conduct the inspection. If the number of

unacceptable groups is not greater than C1 groups, then the batch of cuneiform

......

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 11 pages — is available in the English PDF.

Referenced standards

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