GB/T 3811-2008 PDF EnglishUS$145.00 · In stock · Download in 9 seconds
GB/T 3811-2008: Design rules for cranes Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 3811: Historical versions
Similar standardsGB/T 3811-2008: Design rules for cranes---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3811-2008J80 National Standard of tbe People's Republic of China Design Rules for Cranes Issued by General Administration of Quality Supervision , Inspection and Quarantine Standardization Administration of tbe People's Republic of China Table of Contents1 Scope ... 1 2 Normative references ... 1 3 Classifications ... 3 3.1 Division of work class ... 3 3.2 Classification of complete crane mMachine ... 4 3.3 Classifications of mechanisms ... 6 3.4 Classification of structural element or mechanism element ... 8 4 Calculated load and load combination in crane design ... _... 11 4. 1 Principles ... 11 4.2 Calculated load and load coefficient... 11 4.3 Basic design method, load case load assembly in the metal structure design of crane .. 3 1 4.4 Load, load case and load assembly in mechanical design of crane ... 38 5 StrLlCtLtres ... 44 5.1 Metal structure members of the crane ... 44 5.2 Principle of structural calculation ... 44 5.3 Material and permissible stress ... 45 5.4 Structural member and joint strength calculation ... 50 5.5 Rigidity calculation of crane and the structural elements ... 56 5.6 Calculation for stability-protection of element ... 58 5. 7 Calculation on flection-resisting of slab piece and she]] ... 65 5.8 Calculation for fatigue strength of the structure ... 72 5. 9 Construction requirement ... 7 6 6 Mecl1anistn ... 80 6.1 Principles for design calculation of the mechanism ... 80 6.2 Design calculation on the universal parts of crane ... 97 6.3 Calculation for selection of specific part of crane ... 1 07 7 Electricity ... 120 7.1 G·eneral provisions ... 120 ,. 7.2 Power source and power supplying ... 120 7.3 Power distribution system ... 122 7.4 Electric protection ... 123 7.5 Electric control ... 125 7.6 Work environment for the electronic equipments ... 130 -7. 7 Electromotor selection ... 13 1 7.8 Wires, cables and their laying ... 133 7. 9 Electric load lifting devices ... 136 7.10 Auxiliary electronic equipments ... 138 8 Integrated antidumping stability and wind resistance and antiskid security ... 139 8. 1 The integrated ant id umping stability of cranes ... 140 8.2 Wind resistance and antiskid security of the cranes ... 148 9 Safeties ... 150 9.1 Design calculation of security of the crane ... 150 9.2 Marks, nameplates, safety marks, boundary dimension and clear distance of the cranes ... 15 1 9.3 Safety requirements for structures ... 152 9.4 Safety requirements for machines ... 156 9.5 Safety requirements for electricity ... 160 9.6 The safety and arrangement of control and manipulation ... 160 9. 7 Installation requirements for the safety devices ... 161 9.8 Maintenance documentation of the cranes ... 167 9.9 Effective life of the cranes ... 167 Appendix A (Informative) Classification illustration of cranes ... 168 Appendix B (Informative) Classification illustration of crane Mechanism ... 171 Appendix C (Informative) The classification illustration of the hoisting condition of some cranes ... 1 7 6 Appendix D (Normative) Horizontal lateral load in deflected operation ... 177 Appendix E (Informative) Materials of wind load calculation ... 180 Appendix F (Normative) The application of working stress design and limit state design method ... '... 182 Appendix G (Normative) Load and load combination calculation of metal structure of all kinds oftypical cranes ... 185 Appendix H (Normative) The value of capacity checking coefficients yn, ym and r pi for load cotnbination ... 212 Appendix I (Informative) Evaluation on factors influencing the brittle failure and the selection of quality classes of the steel products ... 213 Appendix J (Normative) Gage length of the compression element and converted slenderness ratio of the cancelled elements ... 217 Appendix K (Normative) Stability factor of axial compression element ... 224 Appendix L (Normative) Lateral buckling stability factor (integral stability factor) (/Jb of bend_ing element ... 229 Appendix M (Informative) Global stability calculation of bending element... 233 Appendix N (Normative) Buckling factor of local stability calculation for the lamella ... 236 Appendix 0 (Normative) The stress concentration condition grades and element joint types of structural joint for structural fatigue strength calculation ... 239 Appendix P (Normative) Initial separation for institutional electromotor like crane ... 251 Appendix Q (Informative) JC, CZ and G values in the calculation for motor capacity selection of crane mechanis1n ... 257 Appendix R (Normative) Overload verification of electromotor ... 261 Appendix S (Normative) Calorification verification of electromotor ... 264 Appendix T (Normative) Determination of shape factor Ks, size factor Kd, surface condition factor Ku and corrosion factor Kc ... 271 Appendix U (Informative) Adjustment on current capacity of conductor ... 274 Appendix V (Informative) The overturning wire of the mobile cranes ... 275 Appendix W (Informative) Symbols and codes ... 277 Referet1ces ... 293 .. Foreword This standard replaces Design Rules for Cranes (GB/T 3811 - 1983). There have been some changes in this national standard over GB/T 3811 - 1983 in the following technical aspects. a) Add "Foreword"; - b) Revise "Introduction"; c) The crane is classified into overhead type crane, jib type crane and cable type crane, and in "Scope", the limitation "only being applicable to the electric driven crane". d) The content of Chapter 2 "General Provisions" in the former GB/T 3 81 1 -1983 is adjusted to the content in this standard. --Chapter 3 "Classification", add the provisions in structure or machine element classification; --~Chapter 4 "Calculated Load" and "Load Combination" - -1Chapter 8 "anti-overturning stability and wind resistance skid presentation safety of complete machine"; --Chapter 9 "Safety". e) Adjust Chapter 3 "Structure" in GB/T3 811-1983 to Chapter 3 of this standard, and the content changes are as follow. - - Add the content of steel frangibility failure assessment; - -Simplify the integral stability calculation of bending element; - -Revise the contents related to fatigue strength check computation of structure; - - Properly adjust and revise the crane rigidity requirement; --Supplement the requirement on the structure in the structural design. f) Adjust Chapter 4 "mechanism" of BG/T 3811-1983 to Chapter 6 "Machinery" of this standard, and the content changes are as follow. --Supplement the original selection and checking calculation of motor capacity in the mechanism calculation, and the basic content of the mechanism design and the brief calculation of mechanism property are introduced; --Revise the calculation of parts of the machinery. g) Adjust Chapter 5 "Electrics" in GB/T 3 811-1983 to Chapter 7 of this standard, and add the contents related to the electric speed cont... ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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