GB/T 22437.4-2010 English PDF

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GB/T 22437.4-2010: Cranes -- Design principles for loads and load combinations -- Part 4: Jib cranes
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Basic data

Standard ID: GB/T 22437.4-2010 (GB/T22437.4-2010)
Description (Translated English): Cranes -- Design principles for loads and load combinations -- Part 4: Jib cranes
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J80
Classification of International Standard: 53.020.20
Word Count Estimation: 14,151
Date of Issue: 2011-01-10
Date of Implementation: 2011-06-01
Quoted Standard: GB/T 6974.1; GB/T 10183.1; GB/T 22437.1-2008; ISO 4302-1981; ISO 10721-1; ISO 10721-2
Adopted Standard: ISO 8686-4-2005, MOD
Regulation (derived from): National Standard Approval Announcement 2011 No.1 (Total No.166)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the corresponding load and load combinations for jib crane metal structure bearing capacity verification computing. General design principles used in the proposed standard jib cranes, apart from the GB/T 6974 1 defined offshore crane, . Tower cranes, mobile cranes, railway crane, bridge and gantry cranes.

GB/T 22437.4-2010: Cranes -- Design principles for loads and load combinations -- Part 4: Jib cranes

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
. Cranes Design principles for loads and load combinations Part 4. Jib cranes ICS 53.020.20 J80 National Standards of People's Republic of China Design principles for loads and load combinations Part 4. jib crane (ISO 8686-4.2005, MOD) Issued on. 2011-01-10 2011-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 22437 "crane loads and load combinations Design Principles" is divided into five sections. --- Part 1. General; --- Part 2. Mobile cranes; --- Part 3. Tower cranes; --- Part 4. jib cranes; --- Part 5. Bridge and gantry cranes. This section GB/T Part of 422,437. The partial modification of the use of ISO 8686-4.2005 "Design principles for loads and load combinations - Part 4. Boom Cranes" (In English). This section according to ISO 8686-5.2004 to redraft the relevant technical differences have been incorporated into the text and in terms of which they are involved page Identified by a single vertical line in the margin. In Appendix B gives a list of the technical differences and the reasons for the reference. For ease of use, this section also made the following editorial changes. --- The term "this part of ISO 8686" with the words "GB/T 22437 in this section"; "." --- With a decimal point instead of a comma as the decimal point, ""; --- Delete ISO 8686-4.2005 Foreword and catalog; --- ISO 8686-4.2005 international standard referenced in our country has been adopted as a standard, instead of using our standard corresponding to international standards quasi. It has not been adopted as our standard, direct reference to international standards; --- The text of the formula are numbered; Subscripts --- this part of the power load factor symbol φn by the "n" to "i"; --- This section itemized load factor γp, under the symbol strength factor γf increase subscript "it", to γpi, γfi expressed under different load combination to take Different values; --- Added Appendix B. Appendix A of this section is normative appendix, Appendix B is an informative annex. 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. Taiyuan University of Science and Technology, Beijing Institute of hoisting and conveying machinery design. The main drafters of this section. Xuge Ning, where uranium, Yangrui Gang.

Introduction

This section GB/T 22437 for design requests, and the design guidelines and principles. The design principles reflect the current play Heavy state of the art machine design. After the design principles of good design practice to ensure that crane parts and sufficient to meet safety requirements Life. Failure to follow these principles generally may reduce or increase the risk of life, but the innovative technologies and materials can Enough to generate new solutions. These new methods of safety and durability can achieve even better results recognized. Design principles for loads and load combinations Part 4. jib crane

1 Scope

GB/T 22437 in this part of the GB/T 22437.1 general design principles apply to proposed jib crane, that is, apart from the GB/T 6974.1 definition of offshore cranes, tower cranes, mobile cranes, railway cranes, bridge and gantry cranes in GB/T 22437 covers the rest of the jib crane. Proposed phase for boom crane metal structure bearing capacity verification calculations It should load and load combinations.

2 Normative references

The following documents contain provisions which, through reference GB/T 22437 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 6974.1 crane terminology - Part 1. General (GB/T 6974.1-2008, ISO 4306-1.2007, IDT) GB/T 10183.1 crane and trolley wheel carts and track tolerances - Part 1. General (GB/T 10183.1-2010, ISO 12488-1.2005, IDT) GB/T 22437.1-2008 design principles for loads and load combinations - Part 1. General (ISO 8686-1. 1989, MOD) ISO 4302. 1981 Cranes wind load estimation ISO 10721-1 Steel - Part 1. Materials and Design ISO 10721-2 Steel Part 2. Manufacturing and Assembly

3 Terms and Definitions

Terminology GB/T 22437.1 established in, definitions, symbols and abbreviations apply to this part of the GB/T 22437 of.

4 Select principles for loads and load combinations

4.1 Basic considerations When using static elastic model simulated load, should identify boom cranes each member or members in the work of the maximum load effects For the purpose of the various types of loads are combined. To this end, the following points have significance in the preparatory work of the carrying capacity of the checksum calculation. a) jib crane should be in the most unfavorable status and configuration, making the size, position and direction of the load can be generated on the most dangerous point Estimate the maximum stress and the danger point should be a reasonable choice on the basis of the considerations engineering; b) the value of the load GB/T 22437 as defined in this section may be conservative portfolio. Appropriately, these loads can be used with a Some specific load combined and adjusted by reducing the coefficient reflecting the combined effect of probability, the most close to reflect the actual The load status. 4.2 while accelerating effect Typically the two bodies should be considered simultaneously driven acceleration. For example, should be considered carts, trolley, swing or pitching arm or telescopic boom Actions such as the lifting mechanism at the same time accelerating effect, but there is no lifting mechanism other two bodies while accelerating effect. Inertial force produced by the rotation and Centrifugal force should be considered as a load effects. However, if the provisions of the design can not drive, can be considered complete without at the same time accelerating effect. ......

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