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GB/T 25849-2024: Mobile elevating work platforms - Design, calculations, safety requirements and test methods
Status: Valid GB/T 25849: Evolution and historical versions
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Mobile elevating work platforms - Design, calculations, safety requirements and test methods
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[GB/T 25849-2010] Mobile elevating work platforms -- Design calculations, safety requirements and test methods
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Basic data | Standard ID | GB/T 25849-2024 (GB/T25849-2024) | | Description (Translated English) | Mobile elevating work platforms - Design, calculations, safety requirements and test methods | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J80 | | Classification of International Standard | 53.020.99 | | Word Count Estimation | 102,187 | | Date of Issue | 2024-03-15 | | Date of Implementation | 2024-10-01 | | Older Standard (superseded by this standard) | GB/T 25849-2010 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 25849-2024: Mobile elevating work platforms - Design, calculations, safety requirements and test methods
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ICS 53.020.99
CCSJ80
National Standards of People's Republic of China
Replaces GB/T 25849-2010
Mobile lifting work platform
Design, calculations, safety requirements and test methods
(ISO 16368.2010,MOD)
Released on 2024-03-15
2024-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Safety requirements and/or protective measures 8
4.1 Compliance 8
4.2 Structural and stability calculations 8
4.3 Chassis and stabilizers 18
4.4 Extended structure 23
4.5 Drive system of the extension structure 26
4.6 Working platform 31
4.7 Control device 34
4.8 Electrical equipment 35
4.9 Hydraulic system 36
4.10 Hydraulic cylinder 38
4.11 Safety devices 43
5 Verification of safety requirements and/or protective measures 44
5.1 Inspection and testing 44
5.2 Type test 52
5.3 Factory test 52
6 Usage Information53
6.1 General requirements 53
6.2 User Manual 53
6.3 Sign 53
Appendix A (Informative) Use of MEWPs in wind speeds greater than 12.5 m/s (Beaufort 6) 57
Appendix B (Informative) Marking Examples 58
B.1 Hanging point mark 58
B.2 Auxiliary system position marking 59
Appendix C (Normative) Calculation of Wire Rope Drive Systems 60
C.1 Overview 60
C.2 Calculation of wire rope drive system 60
C.3 Calculation of minimum wire rope diameter 61
C.4 Calculation of the diameter of the wire rope drum, wire rope pulley and compensating pulley 61
C.5 Efficiency of wire rope drive systems 64
Appendix D (Informative) Calculation Example. Wire Rope Drive System 66
D.1 Method 66
D.2 Calculation of the diameter of the wire rope drum, wire rope pulley and static pulley 69
Appendix E (Informative) Curb Test Calculation 71
E.1 Overview 71
E.2 Derivation of coefficient z 72
Appendix F (Normative) Instructions for Use 74
F.1 Overview 74
F.2 Operating Instructions 74
Appendix G (Normative) Additional requirements for wireless control devices and control systems 76
G.1 General requirements 76
G.2 Control Limits 76
G.3 Stop 76
G.4 Serial Data Communication 76
G.5 Using multiple operator control stations 76
G.6 Battery powered operator control station 76
G.7 Receiver 77
G.8 Warning 77
G.9 Usage Information 77
Appendix H (Informative) Hazard List 78
Appendix I (Informative) Comparison of structure numbers between this document and ISO 16368.2010 82
Appendix J (Informative) Technical differences between this document and ISO 16368.2010 and their causes 91
References 93
Figure 1.Illustration of important terms 7
Figure 2 Rated load --- 10 people
Figure 3 Examples of maximum tipping loads and force combinations14
Figure 4 Load spectrum coefficient 18
Figure 5 Maximum braking distance for Type 2 and Type 3 MEWPs 21
Figure 6 Hydraulic cylinder pressure under normal operation (hydraulic cylinder is in compression state) 39
Figure 7 Hydraulic cylinder pressure under normal operation (hydraulic cylinder is in tension state) 39
Figure 8 Hydraulic cylinder pressure when seal fails 40
Figure 9 Dual hydraulic cylinders 41 in a compressed state during normal operation
Figure 10 Double hydraulic cylinder 42 with one pipe blocked in compression
Figure 11 Fall protection hanging point test 46
Figure 12 Static load test 47
Figure 13 Dynamic load test of Type 2 and Type 3 MEWP48
Figure 14 Dynamic load test of Type 2 and Type 3 MEWP with load positions 49
Figure 15 Overload test 51
Figure 16 Leveling Standard Example 56
Figure B.1 Example of marking for area-restricted hanging points only 58
Figure B.2 Example of marking for area restrictions and fall protection attachment points 58
Figure B.3 Example of the marking of the hanging point with the most users 58
Figure B.4 Example of auxiliary system position marking 59
Figure C.1 Deflection angle 62
Figure C.2 Deflections in the same/opposite directions 63
Figure C.3 Pulley block 65
Figure D.1 Scenario 1 67
Figure D.2 Scenario 2 68
Figure D.3 Determination of the Quantity of Alternating Bending Stress in a Single Rope to Determine the Diameter of Sheaves and Drums for Retracting/Extending Structures
(See Table D.3) 70
Figure E.1 MEWP before encountering an obstacle 71
Figure E.2 MEWP encountering an obstacle 72
Figure E.3 Potential Energy 72
Figure E.4 Coefficient z 73
Table 1 Examples of load and force directions and their combinations in stability calculations [see Figure 3a)~d)] 12
Table 2 Control device 23
Table C.1 Drive groups classified by operating time 60
Table C.2 Coefficient c 61 of twisted wire rope
Table C.3 Coefficient h1 62
Table C.4 Coefficient h2 63
Table C.5 Efficiency of pulley block 65
Table D.1 Safety factor 68
Table D.2 Dmin/dmin ratio 69
Table D.3 ω value 70
Table H.1 Hazard List 78
Table I.1 Comparison of structure numbers between this document and ISO 16368.201082
Table J.1 Technical differences between this document and ISO 16368.2010 and their causes 91
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.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Elevating Work Platforms (SAC/TC335).
This document was drafted by. Beijing Construction Mechanization Research Institute Co., Ltd., Hangzhou Saiqi Machinery Co., Ltd., Hangzhou Aichi Engineering Vehicle
Vehicle Co., Ltd., Zhejiang Dingli Machinery Co., Ltd., Xugong Fire Safety Equipment Co., Ltd., Xuzhou Handler Special Vehicle Co., Ltd.
Company, Lingong Heavy Machinery Co., Ltd., Hunan Xingbang Intelligent Equipment Co., Ltd., Terex (Changzhou) Machinery Co., Ltd., Guangdong Province
Special Equipment Testing Institute, Xuzhou XCMG Truck-Mounted Crane Co., Ltd., Hunan Zoomlion Intelligent Aerial Work Machinery Co., Ltd., Zhongji
United (Beijing) Technology Co., Ltd., Sunward Intelligent Equipment Co., Ltd., Sany Aerial Machinery Equipment Co., Ltd., Beijing Kaibo
Window Machinery Technology Co., Ltd., Hunan Guangyuan Power Co., Ltd., Chongqing Special Equipment Testing Institute, Hangzhou Hangcha High-altitude Equipment Co., Ltd.
China Construction Haixia Construction Development Co., Ltd., China Construction Machinery Industry Association, Zhejiang Construction Engineering Quality Inspection Station Co., Ltd., China Railway Construction
Luoyang Branch of the First Engineering Co., Ltd. of the Electrification Bureau Group, Henan Normal University, Jiangxi Aozhi Electromechanical Technology Co., Ltd., China Construction Third
Bureau Science and Technology Industry Development Co., Ltd., Chengdu Special Equipment Inspection and Testing Institute, and China Construction Education Association.
The main drafters of this document are. Wang Donghong, Chen Jianping, Chen Xiaofeng, Liu Shuang, Xu Shugen, Xu Xiaodong, Li Peiqi, Wang Dehong, Liu Guoliang, Wang Kai,
Jiang Xiaojun, Shang Xiaoheng, Zhong Yi, Liu Zhixin, Zhu Jianxin, Chagfield, Yuan Dengbo, Liu Dongming, Xiang Wei, Zhang Lei, Hou Guangyao, Wang Yao, Jiang Yan, Zhang Siliang,
Zhang Qiang, Wang Changqing, Luo Shiyuan, Pan Han, Yang Wenhui, Liu Chenghuan, Chen Shuo, Liang Xianqi, Jin Cuijun, Hu Demin, Wang Huanli, Dong Zhengjun, Zhong Huojun,
Ren Luyao, Sun Zehai, Liu Yafeng, Liu Liming, Tong Wei, Li Yanyan, Wang Jinjin, Tang Yuelin, Shi Lei, Xu Hongguang, Yang Qingping, Yuan Zhaocheng, and Roma.
This document was first published in.2010 and this is the first revision.
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)
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