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GB/T 41108.3-2021: Safety of machinery - Safety requirements for interlocking devices - Part 3: Trapped key interlocking devices and systems
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 41108.3-2021 | English | 419 |
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Safety of machinery - Safety requirements for interlocking devices - Part 3: Trapped key interlocking devices and systems
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GB/T 41108.3-2021
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Basic data | Standard ID | GB/T 41108.3-2021 (GB/T41108.3-2021) | | Description (Translated English) | Safety of machinery - Safety requirements for interlocking devices - Part 3: Trapped key interlocking devices and systems | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J09 | | Word Count Estimation | 22,296 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41108.3-2021: Safety of machinery - Safety requirements for interlocking devices - Part 3: Trapped key interlocking devices and systems
---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.
Safety of machinery -- Safety requirements for interlocking devices -- Part 3: Trapped key interlocking devices and systems
ICS 13:110
CCSJ09
National Standards of People's Republic of China
Safety requirements for mechanical safety interlocks
part 3 : trapped key interlocks and systems
Published on 2021-12-31
2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Symbol 3
5 Requirements for trapped key interlocking systems 5
6 Requirements for trapped key interlocks 10
7 Usage Information 14
Reference 17
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 of Standardization Documents"
drafted:
This document is part 3 of GB/T 41108 "Safety Requirements for Mechanical Safety Interlocks": GB/T 41108 has been released
The following parts:
--- Part 1: Direct disconnection of position switches;
--- Part 2: Interlocks with guard locking;
--- Part 3: Interlocking devices and systems for retaining keys:
Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed and managed by the National Machinery Safety Standardization Technical Committee (SAC/TC208):
This document is drafted by: Suzhou Angao Intelligent Safety Technology Co:, Ltd:, Fujian Jiayou Tea Machinery Intelligent Technology Co:, Ltd:,
Anhui Tianjue Technology Co:, Ltd:, Shenzhen Guoji Instrument Co:, Ltd:, Fujian Zhongshou Construction Engineering Co:, Ltd:, Guangdong Liying Intelligent Technology Co:, Ltd:
Company, Sichuan Shuxing Youchuang Safety Technology Co:, Ltd:, Pilz Electronics (Changzhou) Co:, Ltd:, Zhejiang Kexiong Electronic Technology Co:, Ltd:, Zhongji
Productivity Promotion Center, Nanjing University of Science and Technology, Suzhou Institute of Quality and Standardization, Aohuang Testing Technology Service (Shanghai) Co:, Ltd:, Shangtai Fangwei
Safety Technology (Beijing) Co:, Ltd:, Nanjing Forestry University, Wanyi Household Products Co:, Ltd:, Shunde District, Foshan City, China Automobile Certification Center Co:, Ltd:
Company, Qingdao Dingxin Industrial Safety Equipment Co:, Ltd:, Lihong Safety Equipment Engineering (Shanghai) Co:, Ltd:, Shaanxi Guohongfu Testing Technology Co:, Ltd:
Company, Guangdong Kangxin New Materials Co:, Ltd:, Zhejiang Xiemei Technology Co:, Ltd:, Xi'an Kaiyijin Electronic Technology Co:, Ltd:, Quanzhou Standardization Association
Association, Guangdong Changying Precision Technology Co:, Ltd:, Shaanxi Xiejia Yaguang Software Co:, Ltd:, Jiangsu Guanfeng Intelligent Technology Co:, Ltd:, Zaozhuang Huitian
Meiya Thermal Insulation and Energy Saving Building Materials Co:, Ltd:, Xi'an Jiuxinchang Internet of Things Technology Co:, Ltd:, Guangdong Quanwei Industrial Technology Co:, Ltd:, Yiwu Quanwei Technology Co:, Ltd:
Salty Mould Co:, Ltd:
The main drafters of this document: Zhang Xiaofei, Chen Jiayou, Zhang Song, Guo Bing, Fang Yiying, Qin Peijun, Chen Zhuoxian, Huang Zhijiong, Lian Xinhui, Fu Huiqing,
Curie Kai, Shen Junjie, Huang Fei, Liu Zhiyong, Liang Runxi, Li Zhong, Wu Xiangliang, Li Qin, Duan Yafeng, Hou Hongying, Lin Hongsong, Cheng Hongbing, Zhang Zhijin,
Zhu Bin, Yang Lingling, Yang Changhai, Song Guangsheng, Wang Zhewei, Yin Gaojun, Dong Quanxian, Feng Shenghui, Ju Ronghua, Li Liyan, Jiang Tao, Zheng Decan, Zhang Shuo,
Luo Weiqiang, Pang Yan, Wang Minghua, Song Xiaoning, Zheng Huating:
Introduction
The safety standard system in the field of machinery consists of the following types of standards:
--- Type A standard (basic safety standard), giving the basic concepts, design principles and general characteristics applicable to all machinery;
--- Class B standard (general safety standard), involving a safety feature in machinery or a class of safety devices with a wide range of use:
● Class B1, standard for safety features (such as safety distance, surface temperature, noise);
● Class B2, safety devices (such as two-hand operating devices, interlocking devices, pressure-sensitive devices, protective devices) standards:
--- Class C standard (machine product safety standard), a standard that specifies detailed safety requirements for a specific machine or a group of machines:
According to GB/T 15706-2012, this document belongs to category B2 standard:
This document is particularly relevant to the following stakeholders related to machinery safety:
--- machine manufacturer;
--- Health and Safety Agency:
Other stakeholders affected by the level of machinery safety are:
--- machine users;
--- the owner of the machine;
--- service providers;
--- Consumers (for machinery intended for use by consumers):
All of the above-mentioned stakeholders may have participated in the drafting of this document:
In addition, this document is intended for standardization bodies drafting Type C standards:
The requirements specified in this document may be supplemented or modified by Type C standards:
For machines that are within the scope of the C-type standard and have been designed and manufactured in accordance with the C-type standard, the requirements in the C-type standard are preferred:
Interlocking device is a type of protective device commonly used in mechanical safety protection, mainly used to prevent dangerous machine functions under specific conditions (usually
Refers to operation as long as the guard is not closed) to avoid personal injury:
GB/T 41108 consists of three parts:
--- Part 1: Direct disconnection of the position switch: Direct disconnection of the position switch is an interlocking device widely used at home and abroad:
Products, such as sliding safety doors for CNC machine tools, disable dangerous machine functions through position switches when the door is opened:
--- Part 2: Interlocks with guard locking: The moving parts of mechanical equipment cannot stop in a short time due to their inertia,
It is necessary to add the safety function of protective locking to the interlocking device, which is usually realized by electromagnetic force to ensure the movement of the machine:
Protective devices such as safety doors controlled by interlocking devices can only be opened after the components are stopped:
--- Part 3: Interlocking devices and systems for retaining keys: The trapped key interlock device is a new type of interlock device that has appeared in recent years:
Usually used in large equipment or production lines, especially suitable for preventing other personnel from accidentally starting the machine during equipment maintenance and overhaul:
danger to life:
A trapped key interlock is a safety device that performs a function by trapping or releasing a key: In practical application,
In order to realize one or more safety functions, at least two or more trapped key interlocking devices are required to be grouped in a certain logical sequence:
Synthetic trapped key interlock system:
Safety requirements for mechanical safety interlocks
part 3 : trapped key interlocks and systems
1 Scope
This document specifies requirements and usage information for trapped key interlocks and systems:
This document applies to safety-related trapped key interlocks and systems:
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document:
GB/T 14048:1-2012 Low-voltage switchgear and control equipment - Part 1: General
GB/T 14048:3-2017 Low-voltage switchgear and controlgear-Part 3: Switches, isolators, isolating switches and fuse sets
Combiner
GB/T 14048:5-2017 Low-voltage switchgear and control equipment-Part 5-1: Control circuit electrical appliances and switching elements electromechanical
control circuit electrical appliances
GB/T 15706-2012 General Principles of Mechanical Safety Design Risk Assessment and Risk Reduction
GB/T 16855:1-2018 Safety-related parts of machinery safety control systems - Part 1: General rules for design
GB/T 16855:2-2015 Safety-related components of machinery safety control systems - Part 2: Confirmation
GB/T 18831-2017 Design and selection principles of interlocking devices related to mechanical safety and protective devices
GB/T 41108:1 Safety requirements for mechanical safety interlocks - Part 1: Direct disconnection of position switches
GB/T 41108:2-2021 Safety requirements for mechanical safety interlocks - Part 2: Interlocks with guard locking
3 Terms and Definitions
The terms and definitions defined in GB/T 15706-2012, GB/T 18831-2017 and GB/T 41108:1 and the following terms and definitions apply to this
document:
3:1
trappedkeyinterlockingsystem
A system that contains at least two trapped key interlocking devices and realizes one or more safety functions through the transfer of the key:
Note: The trapped key interlock system mainly realizes two sub-functions of isolation control and access control, and the intermediate transfer sub-function is an optional function:
3:2
key
Assemblies for operating trapped key interlocks with matching coding:
3:3
trappedkeyinterlockingdevice
Part of a trapped key interlock system, a device that performs a security function by locking or unlocking a key in a given system:
Examples: key-operated switches, key exchange devices, authorized door locks, etc:
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