GB/T 25849-2024Mobile elevating work platforms - Design, calculations, safety requirements and test methods (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

This document replaces GB/T 25849-2010 "Design calculation, safety requirements and test methods for mobile lifting work platforms" and Compared with GB/T 25849-2010, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Changed the scope (see Chapter 1, Chapter 1 of the 2010 edition);

--- Changed the terms and definitions (see Chapter 3, Chapter 3 of the 2010 edition);

--- Increased the minimum rated load to 120kg (see 4.2.1);

--- Added dynamic stability requirements (see 4.2.3.6);

--- Added the influence of stress concentration and ambient temperature (see 4.2.4.2.4);

--- Changed the requirements for chassis inclination (see 4.3.2, 5.3.2 of the 2010 edition);

--- Changed the requirements for the outrigger plate of the outrigger stabilizer (see 4.3.6, 5.3.6 of the 2010 edition);

--- Added requirements for locking or control systems of floating bridges (see 4.3.14);

--- Deleted the relevant requirements for protective devices for personnel in the operating position (see 5.3.18 of the 2010 edition);

--- Changed the requirements for derailment and prevention of derailment (see 4.3.23, 5.3.23 of the 2010 edition);

--- Deleted the requirements for tilted masts (see 5.4.3 of the 2010 edition);

--- Changed the requirements for rolling in and shearing (see 4.4.3, 5.4.4 of the 2010 edition);

--- Changed the speed requirements for extended structures (see 4.4.5, 5.4.6 of the 2010 edition);

--- Changed some requirements for the braking system of all drives (see 4.5.1.6, 5.5.1.6 of the 2010 edition);

--- Changed the maximum value of the tensile strength of the load-bearing wire rope (see 4.5.2.2, 5.5.2.2 of the 2010 edition);

--- Changed the requirements for drum and pulley grooves (see 4.5.2.13, 5.5.2.13 of the 2010 edition);

--- Changed the requirements for the horizontality of the working platform (see 4.6.1, 5.6.1 of the 2010 edition);

--- Added working platform material requirements (see 4.6.2);

--- Changed the requirements for guardrail (protection) systems (see 4.6.3, 5.6.2 of the 2010 edition);

--- Added hanging point requirements (see 4.6.4);

--- Changed the requirements for guardrail entrances and exits (see 4.6.5, 5.6.3 of the 2010 edition);

--- Changed the requirements for access ladders (see 4.6.8, 5.6.6 of the 2010 edition);

--- Changed the requirements for working platforms made of non-conductive materials (see 4.6.16, 5.6.14 of the 2010 edition);

--- Added noise reduction requirements (see 4.6.17);

--- Changed the control device requirements (see 4.7, 5.7 of the 2010 edition);

--- Added electromagnetic compatibility requirements (see 4.8.6);

--- Added timer requirements (see 4.8.7);

--- Changed the breaking strength requirements for hoses and connectors (see 4.9.3, 5.9.3 of the 2010 edition);

--- Deleted the requirement of "incorrect hose connection" (see 5.9.11 of the 2010 edition);

--- Added dynamic fall protection hanging point test (see 5.1.4.2);

--- Changed the stability test (see 5.1.4.3, 6.1.4.2 of the 2010 edition);

--- Changed the overload test (see 5.1.4.4, 6.1.4.3 of the 2010 edition);

--- Added vehicle-mounted MEWP overload and stability test and factory inspection (see 5.1.4.5 and 5.3.2);

--- Changed the instruction manual requirements (see 6.2, 7.2 of the 2010 edition);

--- Changed the responsible party sign (see 6.3.1, 7.3.1 of the 2010 edition);

--- Added leveling instructions (see 6.3.17);

--- Added additional requirements for wireless control devices and control systems (see Appendix G).

This document is modified to adopt ISO 16368:2010 "Mobile elevating work platforms - Design, calculations, safety requirements and test methods".

Compared with ISO 16368:2010, this document has many structural adjustments. The corresponding table of structural number changes between the two documents is as follows.

See Appendix I.

This document has many technical differences compared to ISO 16368:2010.

A list of these technical differences and their causes is given in Appendix J.

The following editorial changes were made to this document.

--- Use the informative reference GB/T 9465 instead of IEC 61057;

--- Use the informative reference GB/T 20118-2017 to replace ISO 2408:2004;

--- Change the clause number "4.2.1.1" mentioned in 4.6.6 and 5.1.4.3.1 of ISO 16368:2010 to "4.2.1", correct Editorial errors in the original ISO 16368:2010 text;

--- Change the article number "4.2.3.5.1" in ISO 16368:2010 to "4.2.3.6" to correct the editorial error in the original ISO text;

--- Changed references.

Introduction

This document belongs to the Class C standard specified in GB/T 15706 "General principles for safety design of machinery - Risk assessment and risk reduction".

The purpose of this document is to define rules for the protection of persons and objects from the hazards associated with the operation of mobile elevating work platforms (MEWPs).

Accident risk. MEWP is made up of one or more parts produced by one or more manufacturers. MEWP is an active product.

products, including design, manufacture and testing, as well as providing information related to the MEWP itself.

This document does not include all general technical rules applicable to every electrical, mechanical or structural component. The safety requirements of this document are Developed for MEWPs that are regularly maintained in accordance with given instructions, working conditions, frequency of use and national or other regulations it is assumed that the proper functioning of the MEWP is checked before starting work, whether it is used daily or rarely, unless all requirements the control and safety devices are available and in working order, otherwise it cannot be put into operation. For the sake of clarity, the safety measures are given in this document.

This is an example of a solution, but it is not the only possible solution. Any other method can be used to reduce the Same risk as low.

Appendix A explains the reasons for choosing Beaufort 6 as the maximum wind speed.

Appendix B gives examples of hanging point markings.

In order to avoid inconsistencies in wire rope usage factors that cannot be explained with other lifting equipment standards, except for those in the main text of this document, in addition, Annex C gives an appropriate excerpt from the widely accepted DIN 15020 and specifies the calculation requirements for wire rope drive systems.

A calculation example is given.

Appendix E gives the calculation method for the curb test.

Appendix F specifies information related to the instruction manual.

Appendix G specifies additional requirements for wireless control devices and control systems.

Appendix H provides a list of significant hazards covered by this document.

Appendix I gives the comparison of the structure numbers of this document and ISO 16368:2010.

Appendix J gives the technical differences between this document and ISO 16368:2010 and their reasons.

Mobile lifting work platform Design, calculations, safety requirements and test methods

1 Scope

This document specifies all types of work platforms used to transport personnel and their necessary materials and tools to the work location and to carry out work on the work platform.

Safety requirements, protective measures and verification methods for mobile elevating work platforms (hereinafter referred to as "MEWP") of different types and specifications.

This document provides structural design and stability calculations, manufacturing, safety inspections and safety tests before the MEWP is put into use for the first time.

It identifies the hazards arising from the use of MEWPs and describes methods of eliminating or reducing those hazards.

This document does not apply to.

a) Permanently installed manned equipment serving different floors (see GB/T 7588.1, GB/T 21240);

b) Firefighting and fire rescue equipment (see EN1777);

c) Suspended baskets and window cleaning machines for working at height (see GB/T 19154 and GB/T 19155);

d) Track-mounted storage and unloading equipment with a lifting platform (see EN528);

e) Automobile lifting tailgate (see GB/T 37706);

f) Guided climbing work platform (see GB/T 27547);

g) Amusement facilities;

h) Lifting platforms with a lifting height of less than 2m (see EN1570-1);

i) Construction hoists;

j) Aviation ground support equipment (see EN1915 and EN12312);

k) Pole integrated operation vehicle (see JB/T 12482);

l) Industrial vehicles with lifting operating platforms (see GB/T 10827.3);

m) Bridge inspection and maintenance equipment;

n) Certain requirements for insulated aerial work devices mounted on a chassis and used for working with live electrical equipment.

This document does not cover hazards arising from.

--- Use in potentially explosive atmospheres;

---Use compressed gas as a load-bearing element;

---Work on live systems.

Note 1.GB/T 9465 specifies the hazards of working on energized electrical equipment. MEWPs equipped with non-conductive (insulating) parts can provide some protection.

To protect them from the dangers of unintentional contact with such equipment (see GB/T 30032.2).

Note 2.Taking into account the potential unexpected situations specified in GB/T 9465 and this document, the use of insulated aerial work equipment for live work MEWP, this document is used in conjunction with GB/T 9465.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

GB/T 2423.56 Environmental testing Part 2: Test method Test Fh. Broadband random vibration and guidance (GB/T 2423.56-2018,IEC 60068-2-64:2008,IDT)