Pairing method of H-section steel for super-large crane beams

The invention relates to a crane beam and extra-large technology, which is applied in the field of H-section steel group alignment of extra-large crane beams, and can solve the problems of large correction amount, inconvenient hoisting adjustment and transportation, and difficulty in pressing the leveler.
CN101537564AActive Publication Date: 2009-09-23MCC SHIJIU CONSTR
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
MCC SHIJIU CONSTR
Publication Date
2009-09-23

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Abstract

The invention relates to a method for pairing and correcting an H-section steel for super-large crane beams. The method comprises the following specific steps: setting up an assembly platform, longitudinally welding to temporarily fix H-section steel outside a central line of a base plate of a platform beam, and welding a reinforced plate; designing and manufacturing a special correcting unit; arranging a mobile roller support member in the middle of the correcting unit; respectively pairing the H-section steel of the crane beams in three sections; hoisting an upper flange slab and a lower flange slab by a traveling crane to two sides of a web plate of the crane beam on the assembly platform; tightly wedging and fixing the H-section steel by a temporary fixing device; hoisting the correcting unit to the assembly platform, and holding a joint face between the upper flange plate, the lower flange plate and the web plate; checking a joint gap, and sectionally welding between middle T-type weld seams; repeating the above correcting steps until finishing all correcting and fixing work; and releasing the temporarily fixed steel bar and starting submerged arc welding of the weld seams. The applicant manufactures and erects 12 super-large crane beams in 120t Converter-Steckel Mill Project of Angang and 4300mm Wide-thick Plate Project of Egang successively by the method and obtains remarkable effect.
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Description

technical field

[0001] The invention relates to a method for calibrating H-shaped steel groups of an extra-large crane girder. Background technique

[0002] With the continuous improvement of the country's quality requirements for iron and steel products, the introduction and digestion of technology in the iron and steel industry and the application of advanced rolling processes have become increasingly mature. In terms of process design, due to the characteristics of the large-span workshop structure in the cooling bed area, the setting of extra-large crane beams is becoming more and more common.

[0003] In the production of crane girders, the most important process is the assembly and correction of H-beams. There are usually two methods of assembly: vertical and horizontal assembly, and then corrected by H-beam straightening machine. The above two methods have their own advantages and disadvantages. The vertical assembly speed is fast, but the flatness of the web is not ...

Claims

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