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(Code for design of hoist of hydropower project. Part 2: Code for design of mobile hoist)
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NB/T 10341.2-2019
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Basic data | Standard ID | NB/T 10341.2-2019 (NB/T10341.2-2019) | | Description (Translated English) | (Code for design of hoist of hydropower project. Part 2: Code for design of mobile hoist) | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | P26 | | Word Count Estimation | 187,155 | | Date of Issue | 2019-12-30 | | Date of Implementation | 2020-07-01 | | Issuing agency(ies) | National Energy Administration | NB/T 10341.2-2019: (Code for design of hoist of hydropower project. Part 2: Code for design of mobile hoist)
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Code for Design of Hoists for Hydropower Projects
Part 2.Code for Design of Mobile Hoists
Energy Industry Standards of the People's Republic of China
Replace DL/T 5167-2002
Design specification for hoist of hydropower project
Part 2.Design specification for mobile gate hoist
2019-12-30 released
2019-07-01 Implementation
Issued by the National Energy Administration
Foreword
According to the "Notice of the General Office of the National Development and Reform Commission on Printing and Distributing the.2006 Industry Standard Project Plan" (issued
Regarding the requirements of restructuring industry (2006, 1093), the normative team has conducted extensive investigations and studies, and carefully summarized practical experience.
With reference to relevant domestic standards, and on the basis of extensive solicitation of opinions, this specification is revised.
The main technical content of this code is. basic regulations, design principles and requirements, loads, materials, machinery,
Structure, electrical and safety.
The main technical content of this specification revision is.
This code replaces the mobile hoist in the "Design Code for Hydropower and Water Conservancy Engineering Hoist" DL/T 5167-2002
Related content of machine design.
--Added the requirements for the safety monitoring and management system and the online monitoring system for the hoist.
--- Increase the type and requirements of the operating mechanism of the trolley under the inclined pulling condition of the hoist.
--- Increased rail-biting prevention measures when the gate hoist runs along the curved track.
--Added the relevant regulations for the multi-layer winding drum of the gate hoist.
--Added the load classification of the gate hoist.
--Added the relevant regulations on the use of closed gear transmission for each mechanism of the gate hoist.
--- Increased the technical requirements for wire rope pre-tensioning and twisting direction.
--Added the relevant content of the safety brake.
--- Increased the calculation requirements for component stability.
-Added a "Security" chapter.
--Adjusted the principle of dividing the work level of hoist.
--Adjusted the static strength calculation load factor of the high-speed shaft components of the hoisting mechanism.
--Adjusted the content of the "Electrical" chapter.
--Modified the control requirements of the relevant angles when the steel wire rope is wound in multiple layers.
--Modified the material requirements for structural parts.
This specification is managed by the National Energy Administration, proposed by the General Institute of Hydropower and Water Conservancy Planning and Design, and is responsible for daily management.
The technical committee for standardization of metal structures and hoists in the energy industry is responsible for the interpretation of specific technical content. Hold on
If you have any comments or suggestions during the trip, please send them to the General Institute of Hydropower and Water Conservancy Planning and Design (Address. Sixth, Xicheng District, Beijing)
Shop No. 2 Kangbei Xiaojie (Postal code. 100120).
Editor-in-chief of this code. Northwest Survey, Design and Research Institute Co., Ltd. of China Power Construction Corporation
Participating unit of this specification. China Power Construction Group Chengdu Survey and Design Research Institute Co., Ltd.
China Water Resources and Hydropower Jiajiang Hydraulic Machinery Co., Ltd.
General Institute of Hydropower and Water Conservancy Planning and Design
The main drafters of this specification. Liao Yongping, Jia Gang, Zhu Zengbing, Yao Changjie, Gong Jianxin, Yang Fang
Zhao Qingjing Li Gang Fang Hanmei Jiang Decheng Xu Shaobo Feng Hanfu
Zhao Chunlong Wei Chenyang Chen Guanhua Cui Jiazhong Wang Xiaohui Tan Daki
Chen Xiangnan Yu Yingbin Fan Rugu Ren Guoliang Zou Jinchun Gao Yang
Zhao Cheng Wu Siguo Jiang Congjun Tian Fang Zhang Chao
Main reviewers of this code. Lin Zhaohui, Hu Baowen, Yuan Changsheng, Tan Shoulin, Chen Xia, Lu Wei
Zhao Fuxin Wei Wenwei Hu Shuangtian Liu Shuyu Yu Xiquan Liu Chunqing
Luo Wenqiang Wu Xiaoning Zheng Xianghui Tao Yundong Chu Xiaozhao Wang Dandi
Li Shisheng
Table of contents
1 General...1
2 Terminology...2
3 Basic regulations...3
4 Design principles and requirements...5
4.1 General layout...5
4.2 Mechanism Design...6
4.3 Windproof and anti-skid calculation...8
4.4 Anti-corrosion...9
5 Load...11
5.1 Conventional load...11
5.2 Incidental load...12
5.3 Special loads...14
5.4 Other loads...15
6 Materials...16
6.1 Casting...16
6.2 Forgings and rolled parts...16
6.3 Structural parts...16
6.4 Connecting materials...17
7 Machinery...18
7.1 Lifting mechanism...18
7.2 Operating mechanism...20
7.3 Slewing mechanism...22
7.4 Calculation principles of components...24
7.5 Design of components...26
8 Structure...35
8.1 Calculation principle...35
8.2 Load combinations...35
8.3 Allowable stress...36
8.4 Strength calculation of structural parts and connections...37
8.5 Stability calculation...40
8.6 Stiffness requirements...47
8.7 Door frame structure...48
8.8 Construction requirements...49
9 Electrical...54
9.1 General provisions...54
9.2 Power and power supply...54
9.3 Power Distribution System...55
9.4 Electrical protection...55
9.5 Electrical Control...57
9.6 Working environment of electrical equipment...61
9.7 Wires and cables and their laying...61
9.8 Hydraulic automatic hanging off beam...63
9.9 Auxiliary electrical equipment...64
10 Security...65
10.1 Basic safety requirements...65
10.2 Structural safety requirements...66
10.3 Mechanical safety requirements...68
10.4 Electrical safety requirements...69
10.5 Safety and arrangement of control and manipulation...69
10.6 Requirements for the setting of safety protection devices...70
10.7 Fire...71
10.8 Use maintenance files...71
Appendix A Series Parameters of Rated Hoisting Load, Head, Span and Speed...72
Appendix B Running acceleration and deceleration and corresponding acceleration and deceleration time...73
Appendix C Windward Area and Wind Coefficient...74
Appendix D Calculation of horizontal lateral load when hoisting gear is operating in skewed operation...79
Appendix E Motor Selection...82
Appendix F Motor overload check...87
Appendix G Thermal Calibration of Motor...89
Appendix H Mechanical Transmission Efficiency...91
Appendix J Calculation of Running Friction Resistance and Ramp Resistance...92
Appendix K Calculation of Parts...94
Appendix L Allowable values of commonly used sliding bearing materials...0
Appendix M Stability Coefficient of Axial Compression Components...1
Appendix N Lateral Buckling Stability Coefficient of Bending Members...8
Appendix P Overall stability calculation of compression-bending members...11
Appendix Q Calculation of Local Stability of Plate...14
Appendix R Correction Coefficient of Conductor Ampacity...21
Explanation of terms used in this specification...23
List of Reference Standards...24
Attachment. Article description...27
1 General
1.0.1 In order to standardize the design of mobile hoist for hydropower projects, this code is formulated.
1.0.2 This code applies to hydropower projects that are mainly driven by electricity and run on tracks for opening and closing gates and blocking pollution.
Mobile hoist design for grid and equipment maintenance.
1.0.3 The design of mobile hoist for hydropower projects shall not only conform to this code, but also conform to the current relevant national standards
Provisions.
2 term
2.0.1 mobile hoist
Driven by a motor and driven by gears, the gates, trash racks and inspections are opened and closed via the reel, pulley block and lifting parts.
Repairing equipment, moving on rails and other cyclic operations machinery. Mobile hoist is divided into door hoist, trolley hoist
Shut-down and bridge hoist and other types.
2.0.2 supporting brake
A mechanical normally closed brake for braking and stopping is set on the high-speed shaft of the reducer.
2.0.3 safety brake
A mechanical normally closed brake that plays a braking role is set on the reel device.
2.0.4 closed gear transmission
The gear pairs at all levels from the motor to the reel shaft are in a closed box and have a well-lubricated transmission.
2.0.5 broken line groove drum
Each pitch rope groove is crossed by a rope groove parallel to a plane perpendicular to the axis of the reel and a plane perpendicular to the axis of the reel.
A reel with alternating angular rope grooves.
2.0.6 duty class
Consider the changes in load, the utilization of working hours and the nature of gate work, and determine the characteristics of the hoist.
2.0.7 automatic lifting beam
A device that can automatically connect and disconnect gates and hoists.
3 Basic regulations
3.0.1 During the design of the gate hoist and its parts, the working level of the gate hoist and its components shall be divided, including the whole
Machine classification and institutional classification.
3.0.2 The use level of the gate hoist shall meet the requirements of Table 3.0.2-1;...
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