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GB/T 42730-2023: Ergonomics - Evaluation of static working postures
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| GB/T 42730-2023 | English | 419 |
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Ergonomics - Evaluation of static working postures
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GB/T 42730-2023
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Basic data | Standard ID | GB/T 42730-2023 (GB/T42730-2023) | | Description (Translated English) | Ergonomics - Evaluation of static working postures | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A25 | | Classification of International Standard | 13.180 | | Word Count Estimation | 22,231 | | Date of Issue | 2023-08-06 | | Date of Implementation | 2024-03-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42730-2023: Ergonomics - Evaluation of static working postures---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.
ICS 13.180
CCSA25
National Standards of People's Republic of China
Ergonomic static work posture assessment
(ISO 11226.2000,MOD)
Published on 2023-08-06
2024-03-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
PrefaceⅠ
Introduction II
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 General 2
5 Assessment Procedure 2
6 Working posture measurement method 3
7 Work Posture Assessment 3
7.1 Trunk position 3
7.2 Head posture 5
7.3 Upper body posture8
7.4 Lower limb posture 11
Appendix A (informative) Working posture measurement 13
Appendix B (informative) Evaluation of retention time/recovery time combination system 17
Reference 19
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document is modified to adopt ISO 11226.2000 "Ergonometric Static Working Posture Assessment".
Compared with ISO 11226.2000, this document has made the following structural adjustments.
---Added normative reference documents in Chapter 2;
---Chapter 3 corresponds to Chapter 2 in ISO 11226.2000;
---Chapter 4 corresponds to 3.1 in ISO 11226.2000;
---Chapter 5 corresponds to 3.2 in ISO 11226.2000;
---Chapter 6 corresponds to 3.3 in ISO 11226.2000;
---Chapter 7 corresponds to 3.4~3.7 in ISO 11226.2000.
The technical differences between this document and ISO 11226.2000 and their reasons are as follows.
---In Table A.1, change the forearm supination range of motion limit "60°" to "90°" and change the wrist extension range of motion limit to "90°"
Change it to "70°" and change the knee joint flexion range limit value "40°" to "45°" to make it consistent with the physical characteristics of Chinese people.
The following editorial changes have been made to this document.
--- Incorporate the contents of ISO 11226.2000/Cor1.2006 technical errata, and the outer margins of the clauses involved are marked with vertical
Straight double lines (‖) are marked.
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and coordinated by the National Ergonomics Standardization Technical Committee (SAC/TC7).
This document was drafted by. Northeast Normal University, China Institute of Standardization, Winning Energy Efficiency Technology (Qingdao) Co., Ltd., Beijing United University
Science, Chemical Defense Research Institute of the Chinese People's Liberation Army Academy of Military Sciences, Beijing Jinfa Technology Co., Ltd., and Beijing University of Aeronautics and Astronautics.
The main drafters of this document. Xu Hongqi, Zhang Xin, Hu Huimin, Chen Jian, Yang Aiping, Ran Linghua, Luo Ling, Zheng Xiaohui, Zhao Qichao, Shi Jipeng,
Zhang Shouwei, Liu Taijie, Du Junmin, Liu Zhongqi.
Introduction
In a poor working environment, operators may adopt persistent inappropriate working postures, which may lead to pain, fatigue and pain in their musculoskeletal system.
Discomfort. Pain and fatigue in the musculoskeletal system may affect the operator's postural control, thereby increasing the risk of errors and causing work or production problems.
quality decline, and the occurrence of some dangerous situations. Good ergonomic design is a basic requirement to avoid these adverse effects.
This document presents methods for determining the acceptability of static working postures based on existing ergonomic knowledge.
Ergonomic static work posture assessment
1 Scope
This document gives corresponding ergonomic recommendations for different work tasks. This document can be used as a guide to familiarize yourself with the basic concepts of ergonomics
Provide information to people involved in the design or redesign of jobs, jobs, and products, especially those familiar with work postures.
This document specifies static work involving no or minimal external force, taking into account body angle and time factors.
Recommended limits for posture.
This document is intended to provide guidance on the assessment of some task variables to assess health risks to working populations.
This document is intended for the adult working population and the recommendations will provide reasonable protection for nearly all healthy adults. About health risks
Recommendations for risk and protection are primarily based on experimental studies of musculoskeletal loading, discomfort/pain, and endurance/fatigue associated with static work postures.
2 Normative reference documents
This document has no normative references.
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
extremebody-jointposition extremebody-jointposition
Move to the extreme position of the joint's range of motion. At this position, the passive structures of the joint, such as ligaments, will bear substantial mechanical loads.
3.2
FrankfurtplaneFrankfurtplane
When the midsagittal plane of the head remains vertical, the standard horizontal plane formed by the two tragus points and the right infraorbital point.
Note. Frankfurt plane is related to normal vision (relaxation of extraocular muscles).
3.3
full arm supportfularmsupport
The weight of the upper arm is supported by the workplace (e.g. elbow/forearm supported on workbench).
3.4
full head supportfulheadsupport
The weight of the head is supported by the workplace (e.g. the head is supported on a headrest).
3.5
Full trunk support fultrunksupport
The weight of the trunk is supported directly by the workplace (for example, when the trunk is tilted backward, supported by a high chair back) or indirectly (for example, when the trunk is tilted forward, the arms
supported by the workplace).
3.6
holding timeholdingtime
Duration of maintaining a static working posture.
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