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GB/T 30561-2014: Cranes -- Stiffness -- Bridge and gantry cranes
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Cranes -- Stiffness -- Bridge and gantry cranes
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GB/T 30561-2014
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Basic data | Standard ID | GB/T 30561-2014 (GB/T30561-2014) | | Description (Translated English) | Cranes -- Stiffness -- Bridge and gantry cranes | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J80 | | Classification of International Standard | 53.020.20 | | Word Count Estimation | 13,129 | | Date of Issue | 5/6/2014 | | Date of Implementation | 12/1/2014 | | Quoted Standard | GB/T 6974.1; GB/T 6974.5 | | Adopted Standard | ISO 22986-2007, MOD | | Regulation (derived from) | National Standards Bulletin No. 9 2014 | | 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 bridge and gantry cranes (hereinafter referred to as the "crane") features a rigid structure - deflection and natural frequencies are given recommendations and requirements. | GB/T 30561-2014: Cranes -- Stiffness -- Bridge and gantry cranes---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.
Cranes. Stiffness. Bridge and gantry cranes
ICS 53.020.20
J80
National Standards of People's Republic of China
Rigid bridge crane and gantry crane
(ISO 22986.2007, MOD)
Issued on. 2014-05-06
2014-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Requirements 1
5 preset camber main beam 2
6 crane girder natural vibration frequencies of 3
Appendix A (informative) maximum deflection of the main beam (rigidity index) guidance values \u200b\u200b(without considering the role of lifting rope pulley block) 4
Annex B (informative) bridge crane girder minimum natural frequency of the guide values \u200b\u200b(without considering the role of lifting rope pulley block) 5
Appendix C (Informative Appendix) guideline values \u200b\u200bBridge and gantry cranes minimum vertical natural frequency (consider lifting rope pulley block
Role) 7
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard uses redrafted Law Amendment uses ISO 22986.2007 "rigid bridge crane and gantry crane" (in English).
This standard and ISO 22986.2007 technical differences and the reasons are as follows.
Love --- on normative references, this standard has been adjusted technical differences, in order to adapt to China's technical conditions, adjustment
Focus is reflected in the status of Chapter 2, "Normative references", the specific adjustments are as follows.
● equivalents adoption of international standards GB/T 6974.1 instead of ISO 4306-1;
● equivalents adoption of international standards GB/T 6974.5 instead of ISO 4306-5.
--- Increase in Appendix A car is located in the effective length of the cantilever rigidity index formula (A.2);
--- Appendix A, Table A.1 in the header to add "scope", "position the car" project in the "car position" in the span increases, effective
Boom length options;
--- Increase in Appendix A in Figure A.1, the expression of the crane trolley in different positions of the main beam rigidity index;
--- Appendix B formula factor "0.4857" to "0.492";
--- Increase the informative Appendix C "guidance values \u200b\u200bBridge and gantry cranes minimum vertical natural frequency." Participation dynamic crane machine
In addition to the crane girder vibration it should also include full trolley, lifting rope pulley, spreader and lifting loads. International Standard
Appendix B is only quasi-free ends of the support beams put forward the guiding value of the minimum natural frequency, but not give the whole bridge and gantry cranes
Machine minimum guideline values \u200b\u200binherent frequency.
For ease of use, this standard made the following editorial changes.
The δ1 description --- Figure 1 to "preset camber subtracting the weight of the load generated by the main beam static deflection";
--- Increase shown in Figure 1, in order to represent the largest car in the main beam, the case of the minimum slope location;
Figure 2 adds --- yz coordinate system;
--- Appendix B formula (B.2) coefficients "kmg" to "kmg".
The standard proposed by China Machinery Industry Federation.
This standard by the National Standardization Technical Committee crane (SAC/TC227) centralized.
This standard is drafted by. Taiyuan University of Science and Technology, Beijing Institute of hoisting and conveying machinery design, lifting the transport machinery for Quality Supervision and State
Inspection Center.
Participated in the drafting of this standard. Jiang Su Wanfu Machinery Co., Ann.
Drafters of this standard. Xuge Ning, Lin Fukui, Sunji Ze, Lin Weiguo, Yang Heng, Zhang Mingliang.
Rigid bridge crane and gantry crane
1 Scope
The standard bridge and gantry cranes (hereinafter referred to as "Crane") features a rigid structure --- deflection and natural frequency gives the recommended
Values \u200b\u200band requirements.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6974.1 crane terminology - Part 1. General terms (GB/T 6974.1-2008, ISO 4306-1.2007, IDT)
GB/T 6974.5 cranes terminology - Part 5. Bridge and gantry cranes (GB/T 6974.5-2008, ISO 4306-5.
2005, IDT).
3 Terms and Definitions
Terms and definitions GB/T 6974.1 and GB/T 6974.5 defined apply to this document.
4 Requirements
4.1 General
Flexible impact performance for deformation and vibration due to motion or force caused by the instantaneous action under load flexibility.
Cranes and mechanical components too much flexibility can affect its safe use, should control the elastic deformation and vibration to prevent dangerous
Condition that affects the normal use of the crane. Requirements for elastic deformation and vibration of a structure depends on the crane, crane load positioning accuracy, control
System performance as well as the type and location of the console. Increased rigidity means that will increase the cost of investment, and may require a larger space, which all
The applications are not worth it. In addition, the possibility of flexible cancellation depends largely on the type and configuration of the crane, it is difficult to
Precise limits deflection or vibration.
The basic requirements of an elastically deformable 4.2
The elastic deformation of the crane structure should.
a) cause the crane or trolley collisions with surrounding objects and structure;
b) interfere with any load when the car does not exceed the dynamic load tests can be designed using the start/start and brake system implementation
brake;
c) interfere with any load when the car does not exceed the static load test, to stay in a safe position;
d) result in crane and trolley tracks excessive lateral force or impede crane operation;
e) resulting in part due to mechanical transmission dislocation arising from short-lived, excessive vibration and early wear or brake failure.
The recommended maximum deflection of the main beam (rigidity index) guide values \u200b\u200bin Appendix A.
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