This standard specifies the type classification, basic parameters, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of general-purpose bridge cranes with a rated weight of 3.2t to 320t. This standard applies to general-purpose bridge cranes (hereinafter referred to as cranes) working in general environments. The pick-up device is a hook or a grab or a lifting electromagnet (electromagnetic sucker), or two or three of them are used at the same time. It can also refer to the same parts of general bridge cranes with a rated lifting capacity greater than 320t or other bridge cranes. This standard does not apply to cranes used under the following conditions: ——Inflammable, explosive, flammable gas, dust and corrosive gas environment; ——Nuclear radiation environment, toxic gas environment.
GB/T 14405-2011 Referenced Document
GB 14048.1-2006 Low-voltage switchgear and controlgear. Part 1: General rules
GB 15052 Cranes.Safety signs and hazard pictorials.General principles
GB/T 13384 General specifications for packing of mechanical and electrical product
GB/T 19418 Arc-welded joints in steel-Guidance on quality levels for imperfections
GB/T 20118 General technical conditions for steel wire rope*, 2018-09-01 Update
GB/T 20303.1 Cranes.Cabins and control stations.Part 1:General*, 2016-02-24 Update
GB/T 20303.5 Cranes—Cabins and control stations—Part 5: Overhead travelling and portal bridge cranes*, 2021-12-31 Update
GB/T 21971 YZD series multi-speed three-phase induction motors for crane application—Technical specification*, 2020-11-19 Update
GB/T 21972.1 Technical conditions of variable frequency speed regulation three-phase asynchronous motors for hoisting and metallurgy Part1:YZP series frequency conversion speed regulation three-phase asynchronous motors for lifting and metallurgy(frame size 100~400)*, 2023-03-17 Update
GB/T 24809.5 Cranes.Requirements for mechanisms.Part 5:Bridge and gantry cranes
GB/T 24811.1 Cranes and lifting appliances.Selection of wire ropes.Part 1:General
GB/T 6974.5 Cranes.Vocabulary.Part 5:Bridge and gantry cranes
GB/T 8923 Rust grades and preparation grades of steel surfaces before application of paints and related products
GB/T 9286 Paints and varnishes—Cross-cut test*, 2021-08-20 Update