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GB/T 24811.2-2009Cranes and lifting appliances -- Selection of wire ropes -- Part 2: Mobile cranes -- Coefficient of utilization (English PDF)

起重机和起重机械钢丝绳选择第2部分：流动式起重机利用系数

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Issued by

Standardization Administration of China

Level / Type

National · Recommended

Issue date

December 15, 2009

Implementation date

July 1, 2010

Scope

GB/T 24811.2-2009 is the English-translated version of 起重机和起重机械钢丝绳选择第2部分：流动式起重机利用系数.

GB/T 24811.2-2009 — This section GB/T 24811 specifies the general wire rope for mobile cranes lines and the actual utilization of the minimum twist rope barrier Value Zp (as defined in GB/T 24811.1). This section applies to all defined in ISO 4306-2 mobile crane.

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Document preview — GB/T 24811.2-2009

National Standard of the People's Republic of China

ICS: 53.020.30
Classification: J 80

Issued by: Standardization Administration of China

Foreword
1 Scope
2 Normative references
3.1 General Rope
3.2 Rotating wire rope barrier

Foreword

GB/T 24811 "Cranes and Lifting rope selection" is divided into two parts.

--- Part 1. General;

--- Part 2. Mobile cranes utilization factor.

This section GB/T 24811 Part 2.

This part identical with ISO 4308-2. 1988 "Cranes and lifting appliances Selection of wire ropes - Part 2. Mobile cranes Utilization factor "(in English).

This section is equivalent translation ISO 4308-2. 1988.

For ease of use, this section made the following editorial changes.

--- The term "this part of ISO 4308" with the words "GB/T 24811 in this section";

--- Delete ISO 4308-2. 1988 Foreword and Introduction;

"." --- With a decimal point instead of a comma as the decimal point, "";

--- For ISO 4308-2. 1988 international standard references, use has been adopted as the equivalent of the standard instead of the corresponding international standards, the other is not identical with direct reference to international standards for our standards.

This part is proposed by China Machinery Industry Federation.

This part of the National Standardization Technical Committee crane (SAC/TC227) centralized.

This section is drafted. XCMG Xuzhou Heavy Machinery Co., Ltd., Changsha Zoomlion Heavy Industry Science and Technology Development Co., Ltd.

1 Scope

This section GB/T 24811 specifies the general wire rope for mobile cranes lines and the actual utilization of the minimum twist rope barrier Value Zp (as defined in GB/T 24811.1).

This section applies to all defined in ISO 4306-2 mobile crane.

2 Normative references

The following documents contain provisions which, through reference GB/T 24811 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 20863.2 crane classification - Part 2. Mobile cranes (GB/T 20863.2-2007, ISO 4301-2.

1985, IDT)

GB/T 24811.1 cranes and crane Selection of wire ropes - Part 1. General (GB/T 24811.1-2009, ISO 4308-1:2003, IDT) ISO 4306-2 Cranes - Terminology - Part 2. Mobile cranes

3.1 General Rope

According to GB/T 20863.2 crane machine grading and institutions, the minimum utilization factor generally rope Zp Table 1.

Table 1 General a rope

crane

Working conditions

Crane Machine

Working level

Rope sports

Hoisting and luffing telescopic mechanism Working level Zp mechanism Working level Rope work Zp Installation of rope Zp Static rope Rope work Zp Installation of rope Zp General use Regular use Heavy use A1 A3 A4 M3 M4 M5 3.55 4.00 4.50 M2 M3 M3 3.35 3.55 3.55 3.05 3.05 3.05 2.73 2.73 2.73 a well known, depends on the safe use of wire rope wire rope inspection and discard criteria of application.

3.2 Rotating wire rope barrier

Rotating wire rope barrier is an outer layer 8 8 shares or shares over which the inner strands and twist to the opposite rope. according to Classification GB/T 20863.2, minimum utilization factor hindered rotation rope Zp Table 2.

GB/T 24811.2-2009/ISO 4308-2. 1988

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 24811 · ISO 4301 · ISO 4308 · ISO 4306

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