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WH/T 28-2007 English PDF (WHT28-2007)

WH/T 28-2007 English PDF (WHT28-2007)

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WH/T 28-2007: Mechanical equipment on stages-upper stage-safety requirements

This Standard is the basic safety technical specification for mechanical equipment on upper stages. This Standard applies to the mechanical equipment on upper stages installed in various performance venues including theater, multi-function hall, exhibition hall, TV studio, concert hall, auditorium, gymnasium, bar, discotheque and amphitheater, etc. In addition to the stage, the auditorium is also a performance venue so this Standard is also applicable.
WH/T 28-2007
WH
CULTURAL INDUSTRY STANDARD OF
THE PEOPLE REPUBLIC OF CHINA
Reference No.. 20729-2007
Mechanical Equipment on Stages ?€?
Upper Stage - Safety Requirements
ISSUED ON. MAY 9, 2007
IMPLEMENTED ON. JUNE 1, 2007
Issued by. Ministry of Culture of the People's Republic of China
3. No action is required - Full-copy of this standard will be automatically and immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative references ... 5
3 Mechanical equipment ... 6
3.1 Example for composition of mechanical equipment on upper stage ... 6 3.2 Structural part ... 6
3.3 Wire-rope ... 9
3.4 Chains ... 12
3.5 Pulley assembly ... 13
3.6 Drive pulley ... 14
3.7 Reel components ... 15
3.8 Drive device ... 15
3.9 Motor ... 16
3.10 Speed reducer ... 17
3.11 Brake ... 17
3.12 Protective device ... 17
3.13 Balance weight ... 18
3.14 Guide rail ... 18
4 Electrical equipment and control systems ... 18
4.1 General ... 18
4.2 Selection of electrical equipment ... 19
4.3 Power supply ... 19
4.4 Actual environment and operating conditions ... 19
4.5 Power supply and equipment separation and disconnection ... 20
4.6 Electric shock protection ... 20
4.7 Protection of electrical equipment ... 21
4.8 Voltage balance ... 21
4.9 Control circuit and control functions ... 22
4.10 Safety functions and control functions under fault conditions ... 23 4.11 Emergency shutdown and emergency power off function ... 27
4.12 About wireless control... 29
4.13 Programmable electronic / electrical system ... 29
4.14 Programmable control system (E / PES) used for safety-independent
functions ... 30
4.15 Electrical components... 30
4.16 Wires and cables ... 31
4.17 Wiring technology ... 31
4.18 Protective devices for mechanical brakes ... 32
4.19 Interconnection of mechanical electrical devices ... 32
Annex A (Informative) References standards and specifications ... 33
Annex B (Normative) Rod use information ... 35
Foreword
This Standard was formulated by referring to the German standard DIN
56950 Entertainment technology - Machinery installations and Part 1 and 2 of the Austrian standard ??NORM M9630 Automatic stage equipment - Part 1.
General information and Automatic stage equipment - Part 2. Overhead stage machinery, combining with the actual situation of China's stage machinery industry. This Standard was drafted in accordance with the rules given in GB/T 1.1-2009 Directives for standardization - Part 1. Structure and drafting of standards.
Annex A of this Standard is informative. Annex B is normative.
This Standard was proposed by and shall be under the jurisdiction of Ministry of Culture of the People 's Republic of China.
Main drafting organizations of this Standard. China Performing Arts
Equipment Technology Association Performance Venues Equipment
Professional Committee, General Equipment Department Engineering Design Research Institute.
The drafting organizations of this Standard. Gansu Polytechnic University Machinery Factory (Gansu Gongda Stage Equipment Research Institute),
Zhejiang Stage Design and Research Institute Ltd.
Main drafters of this Standard. Zheng Hui, Du Ankun, Sun Yadu, Gong
Kuicheng, Wu Jiantong, Chang Song, Xu Qi, Wei Fakong, Song Hong.
Mechanical Equipment on Stages ?€?
Upper Stage - Safety Requirements
1 Scope
This Standard is the basic safety technical specification for mechanical equipment on upper stages.
This Standard applies to the mechanical equipment on upper stages installed in various performance venues including theater, multi-function hall,
exhibition hall, TV studio, concert hall, auditorium, gymnasium, bar,
discotheque and amphitheater, etc. In addition to the stage, the auditorium is also a performance venue so this Standard is also applicable.
This Standard does not apply to the mechanical equipment on stage for
temporary use and used for acrobatics.
2 Normative references
The following standards contain the provisions which, through reference in this Standard, constitute the provisions of this Standard. For dated references, subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, the parties who enter into agreement based on this Standard are encouraged to investigate whether the latest versions of these documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 3811-198, Design rules for cranes
GB/T 6067-1985, Safety rules for lifting appliances
GB/T 5905-1986, Cranes - test code and procedures
GB 50052-1995, Code for design of electric power supply systems
GB 5226.1-2002, Safety of machinery - Electrical equipment of machines - Part 1. General requirements
GB/T 16855.1-2005, Safety of machinery - Safety-related parts of control systems - Part1. General principles for design
GB 16754-1997, Safety of machinery - Emergency stop Principles for
design
GB/T 15706.1-1995, Safety of machinery - Basic concept, general
principles for design - Part 1. Basic terminology, methodology
GB/T 15706.2-1995, Safety of machinery - Basic concepts, general
principles for design - Part 2. Technical principles and specifications GB 19517-2004, National safety technical code for electric equipment
GB 5083-1999, General rules for designing the production facilities in
accordance with safety and health requirements
GB 50169-1992, Code for construction and acceptance of earthed device
electric equipment installation engineering
GB 1408.5-2001, Low-voltage switchgear and control gear control circuits - Electrical and switching elements - Part 1. Electromechanical control
circuits - Electrical appliances
GB 4824-2004, Industrial, scientific and medical (ISM) radio-frequency
equipment - Electromagnetic disturbance characteristics- - Limits and
methods of measurement
GB/T 15543-1995, Quality of electric energy supply - Admissible
three-phase voltage unbalance factor
GB/T 17626.1-1998, Electromagnetic compatibility - Testing and
measurement techniques - Overview of immunity tests
CECS 49-1993, Code for the reception criterion for Low-voltage switchgear assemblies
3 Mechanical equipment
3.1 Example for composition of mechanical equipment on upper stage
The example for composition of mechanical equipment on upper stage is as shown in Figure 1.
3.2 Structural part
3.2.1 Construction requirements
3.2.1.1 The structural design of the main bearing structure shall be simple, with clear force, with direct force and shall try to reduce the impact of stress concentration.
composite truss structure. The wall thickness of main tube shall not be less than 2.5 mm. The rods shall be straight, without distortion or deformation. 3.2.5.2 When confirming the rod structure, it shall note that the deflection between...

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