1 Scope
This Part of GB 6067 specifies the basic safety requirements for the design, manufacture, installation, renovation, maintenance, application, discard and inspection of lifting appliances.
This Part is applicable to the general requirements of overhead travelling and portal bridge cranes, mobile cranes, tower cranes, jib cranes, cable cranes and small light lifting equipment. The requirements for special lifting appliances are provided in other parts of GB 6067.
This Part is not applicable to floating cranes, deck cranes and manned lifting equipment. If no basic safety problems are involved, other lifting appliances may also refer to this Part.
2 Normative References
The following normative documents contain provisions which, through reference in this Part of GB 6067, constitute provisions of this Part. For dated reference, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.
GB 2893 "Safety Colors"
GB/T 3323 "Radiographic Examination of Fusion Welded Joints in Metallic Materials" (GB/T 3323-2005, EN 1435: 1997, MOD)
GB/T 3811-2008 "Design Rules for Cranes"
GB/T 4842 "Argon"
GB/T 5117 "Carbon Steel Covered Electrodes" (GB/T 5117-1995, eqv ANSI/AWS A5.1: 1991)
GB/T 5118 "Low Alloy Steel Covered Electrodes" (GB/T 5118-1995, eqv ANSI/AWS A5.5: 1981)
GB 5226.2-2002 "Safety of Machinery--Electrical Equipment of Machines--Part 32: Requirements for Hoisting Machines" (idt IEC 60204-32: 1998)
GB/T 5293 "Carbon Steel Electrodes and Fluxs for Submerged Arc Welding" (GB/T 5293-1999, eqv ANSI/AWS A5.17: 1989)
GB/T 5905 "Cranes--Test Code and Procedures" (GB/T 5905-1986, idt ISO 4310: 1981)
GB/T 5972 "Cranes--Wire Ropes--Care, Maintenance, Installation, Examination and Discard" (GB/T 5972—2009, ISO 4309: 2004, IDT)
GB/T 8110 "Welding Electrodes and Rods for Gas Shielding Arc Welding of Carbon and Low Alloy Steel" (GB/T 8110-2008, AWS A5.18M: 2005, MOD; AWS A5.28M: 2005, MOD)
GB 8918 "Steel Wire Ropes for Important Purposes" (GB 8918—2006, ISO 3154: 1988 MOD)
GB/T 10051.1 "Lifting hooks--Mechanical Properties, Lifting Capacities, Stresses and Materials" (GB/T 10051.1-1988, eqv DIN 15403-3: 1982)
GB/T 10051.2 "Lifting Hooks--Technical Conditions of Shank Hook" (GB/T 10051.2-1988, eqv DIN 15401-2: 1982)
GB/T 10051.3 "Lifting Hooks--Inspection of Shank Hook in Service" (GB/T 10051.3-1988, eqv DIN 15405-1: 1979)
GB/T 12470 "Low-alloy Steel Electrodes and Fluxs for Submerged Arc Welding"
GB 15052 Cranes -- Safety Signs and Hazard Pictorials -- General Principles
GB/T 17908 "Cranes and Lifting Appliances--Technical Characteristics and Acceptance Documents" (GB/T 17908-1999, idt ISO 7363: 1986)
GB/T 17909.1 "Cranes--Crane Driving Manual--Part 1: General" (GB/T 17909.1-1999, idt ISO 9928-1: 1990)
GB/T 18453 "Cranes--Maintenance Manual--Part 1: General" (GB/T 18453-2001, idt ISO 12478-1: 1997)
GB/T 18875 "Cranes--Spare Parts Manual" (GB/T 18875—2002, ISO 10973: 1995, IDT)
GB/T 19418 "Arc-welded Joints in Steel--Guidance on Quality Levels for Imperfections" (GB/T 19418-2003, ISO 5817: 1992, IDT)
GB/T 20303.1 "Cranes--Cabins--Part 1: General" (GB/T 20303.1-2006, ISO 8566-1: 1992, IDT)
GB/T 20652 "Chain Slings of Welded Construction--Grades M(4) S(6) and T(8)" (GB/T 20652—2006, ISO 4778: 1981, IDT)
GB/T 20947 "Short-link Chain for Lifting Purposes--Grade T (Types T, DAT and DT) Fine-tolerance Hoist Chain" (GB/T 20947-2007, ISO 3077: 2001, IDT)
GB/T 25196.1 "Cranes--Condition Monitoring--Part 1: General" (GB/T 25196.1-2010, ISO 12482-1: 1995, IDT)
GB 50054 ”Code for Design of Low Voltage Electrical Installations”
GB 50058 "Electrical Installations Design Code for Explosive Atmospheres and Fire Hazard"
HG/T 2537 "Carbon Dioxide for Welding"
JB/T 6061 "Non-destructive Testing--Magnetic Particle Testing of Welds" (JB/T 6061-2007, ISO 17638: 2003, MOD)
JB/T 6062 "Non-destructive Testing--Penetrant Testing of Welds"
JB/T 10559 "Non-destructive Testing of Lifting Appliances--Ultrasonic Testing of Steel Welds"
JGJ 81 "Technical Specification for Welding of Steel Structure of Building"
JGJ 82 "Code for Design, Construction and Acceptance of High Strength Bolts for Steel Structure"
3 Metal Structure
3.1 General
3.1.1 In design of the metal structure of lifting appliances, the materials, structural styles and construction measures shall be selected appropriately so as to meet the requirements for strength (including fatigue strength), stability, rigidity, safety, fire prevention and corrosion protection during the transport, installation and application process.
3.1.2 In the design documents of metal structure, the type of steels and model of connecting materials shall be indicated; for the important loaded members, the mechanical property, chemical composition and other additional guarantee items of steels shall also be indicated. Moreover, the weld types and weld quality level as required shall be indicated.
3.2 Materials
The steels for the load-bearing structural members of lifting appliances shall be selected according to the requirements of Article 5.3 in GB/T 3811-2008.
3.3 Requirements for welding structural members
3.3.1 The fabrication or installation and construction organizations of metal structure shall formulate their own technical specification for welding of steel structure according to JGJ 81 or relevant standards.
3.3.2 The manufacturers or installation and construction organizations shall carry out welding procedure qualification on the combination condition of various first-adopted parameters, such as steel model, welding material, welding method, joint type, welding position, post-weld heat treatment (PWHT) process and welding parameter as well as preheating or post-heating process, etc.
3.3.3 The welding materials of structural members shall meet the following requirements:
a) The electrode model for manual welding shall correspond to the mechanical property of base metal, and shall meet the requirements of GB/T 5117 or GB/T 5118. The welding wire shall meet the requirements of GB/T 8110 or GB/T 5293.
b) The welding wire and corresponding welding flux for automatic or semi-automatic welding shall correspond to the mechanical property of base metal, and shall meet the relevant requirements of GB/T 5293 and GB/T 12470;
c) The argon for gas shielding welding shall meet the requirements of GB/T 4842, with the purity not be less than 99.95%; the carbon dioxide in use shall meet the requirements of HG/T 2537.
3.3.4 The weld grade of fully-penetrated melt welding joints shall meet the grading requirements of Grade 1, Grade 2 and Grade 3 in JB/T 10559.
3.3.5 The internal imperfections of welds shall be examined according to the following requirements:
