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GB/T 33944-2017 English PDF

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GB/T 33944-2017: Mobile detachable working towers -- Safety technical criterion
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PDF similar to GB/T 33944-2017


Standard similar to GB/T 33944-2017

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Basic data

Standard ID GB/T 33944-2017 (GB/T33944-2017)
Description (Translated English) Mobile detachable working towers -- Safety technical criterion
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J09
Classification of International Standard 13.110
Word Count Estimation 34,365
Date of Issue 2017-07-12
Date of Implementation 2018-02-01
Quoted Standard GB/T 14687; GB/T 15706; GB/T 17620-2008; GB/T 17889.1-2012; GB/T 17889.2-2012; GB/T 17889.3; GB/T 31539; GB 50005; GB 50009-2012; GB 50017; GB 50429; JGJ 130-2011
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 classification, type, material and protection of mobile removable bench, general requirements, load requirements, structural design requirements, test and use information. This standard is applicable to mobile detachable working towers (hereinafter referred to as towers) consisting of preforms and with a height of 2.5 m to 12 m (indoor) and 2.5 m to 8 m (outdoor).

GB/T 33944-2017: Mobile detachable working towers -- Safety technical criterion

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Mobile detachable working towers.Safety technical criterion ICS 13.110 J09 National Standards of People's Republic of China Mobile removable work tower Safety Specifications 2017-07-12 Posted 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 grade 5 4.1 Load Level 5 4.2 into the way 5 5 Model 5 6 materials and their protection 6 6.1 Material Selection 6 6.2 Material Protection 6 7 General requirements 6 7.1 General 6 7.2 platform 6 7.3 Pores in the Platform 7 7.4 Lateral protection 7 7.5 casters 8 7.6 into the platform 8 7.7 Stability measures 11 7.8 Connection 12 7.9 Platform Components 13 7.10 Installation and Removal 13 8 load requirements 13 8.1 General requirements 13 8.2 Complete structure (including its components) on the force 13 8.3 Structural components on the force 14 8.4 Deflection 15 9 structural design requirements 15 9.1 Basic Design Principles 15 9.2 Structural Design, Structural Analysis and Verification of Components 16 10 Tests 16 10.1 castors brake test 16 10.2 Caster load test 16 10.3 Lateral Loads Under Load Tests 17 10.4 Platform Component Deflection Test 17 10.5 Lateral Protection Horizontal Load and Elastic Deflection Tests 17 10.6 skirting horizontal load and elastic deflection test 17 10.7 Tread/pedal vertical load test 17 10.8 tower overall structure stiffness test 18 10.9 Composites Aging Performance Comparison Tests 20 10.10 Tower insulation test 20 10.11 Tower Electrical Performance Test 21 11 Use Information 22 11.1 Operation Manual 22 11.2 Identification 22 Appendix A (Informative) Tower Design Calculation 24 A.1 Structural Analysis A.2 Validation 26 A.3 Position stability 27 References 29

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents. This standard proposed by the Tianjin Municipal Market and Quality Supervision and Management Committee. This standard by the National Standardization Technical Committee Mechanical Safety (SAC/TC208) centralized. This standard was drafted unit. Tianjin Golden Anchor Group Co., Ltd., China Testing and Certification Group Co., Ltd., Shunde District of Foshan City Courtyard furniture Co., Ltd., Mechanical Science Research Institute, Nanjing Forestry University Institute of Optoelectronic Engineering, Fujian Min spin shares Co., Ltd., China National Institute of Standardization, Guangdong Institute of Product Quality Supervision and Inspection, Jilin Province Institute of Science and Technology of Security. The main drafters of this standard. Li Jie, Liu Zehua, Chi Youxun, Fu Huiqing, Cai Qiang, Li Shisen, Wang Xuezhi, Cheng Hongbing, Wang Gu buck, Ju Ronghua, Zhang Xiaofei, Yu Mao Lin, Zhu Bin, Liu Xia, Li Zhihong, Liu Zhiyong, Wang Shengjiang, Li Chunping, Wang Yongsheng, Jia surgery, Yang Kejun.

Introduction

The mechanical safety standards are structured as follows. --- Class A standard (basic safety standards), given the basic concepts applicable to all machinery, design principles and general characteristics. --- Class B standard (General Safety Standard) relates to a safety feature of machinery or a wide range of safety devices. ● B1, safety characteristics (such as safety distance, surface temperature, noise) standards; ● B2 class, safety devices (such as two-handed control device, interlock, pressure-sensitive devices, guards) standards. --- Class C standard (machine safety standard), a specific machine or a group of machines provides detailed safety requirements of the standard. According to the provisions of GB/T 15706, this standard belongs to Class B standard. This standard is especially relevant to the following stakeholders related to mechanical safety. --- Machine manufacturer; --- Health and safety agencies. Other stakeholders affected by the level of mechanical safety are. --- Machine users; --- machine owner --- service provider; --- Consumer (for the intended use of machinery by consumers). The above stakeholders are likely to participate in the drafting of this standard. In addition, this standard is intended for the drafting of standard C standardization bodies. The requirements of this standard may be supplemented or modified by C standards. For machines designed and manufactured in accordance with category C standards within the scope of category C standards, the requirements of category C standards are preferred. Mobile removable work tower Safety Specifications

1 Scope

This standard specifies the mobile removable tower classification, model, material and its protection, general requirements, load requirements, structural design Requirements, tests and usage information. This standard applies to prefabricated parts, and the height of 2.5m ~ 12m (indoor) and 2.5m ~ 8m (outdoor) removable removable Work tower (hereinafter referred to as tower). Note. "Indoor" means the tower is not affected by the wind, "Outdoor" means that the tower may be affected by the wind.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 14687 industrial castors and wheels GB/T 15706 General Principles of Mechanical Safety Risk Assessment and Risk Reduction GB/T 17620-2008 live-insulated hard ladder GB/T 17889.1-2012 Ladders Part 1. Terms, types and functional dimensions Ladders - Part 2. Requirements, tests and markings GB/T 17889.2-2012 GB/T 17889.3 ladder Part 3. Manual GB/T 31539 structural fiber-reinforced composite material pultruded profiles GB 50005 wood structure design specifications Building structural load codes GB 50017 steel structure design specifications GB 50429 aluminum alloy structure design specification Safety code for construction of fastener steel pipe scaffolding

3 Terms and definitions

GB/T 17889.1-2012 as defined by the following terms and definitions apply to this document. 3.1 Mobile removable tower mobiledetachableworkingtower A scaffolding structure characterized by. --- Can be used independently; --- One or more work platforms --- Prefabricated components; --- Its size has been confirmed by design; --- usually have four legs, and at least four casters; --- Through the ground support, or if necessary, through the wall support to maintain stability.

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