Method for correcting spatially-downwarped steel beam
A steel beam and space technology, applied in the field of under-space deflection steel beam correction, can solve the problems of in-situ correction without bottom deflection deformation of furnace bottom steel beam, without furnace bottom steel beam in-situ correction, etc., and achieves the effect of avoiding high cost
Active Publication Date: 2012-08-08
CHINA MCC 2 GRP CO LTD
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Problems solved by technology
However, there is currently no special or general-purpose equipment for in-situ correction of the deflection deformation of furnace bottom steel beams on the market, nor is there any method for in-situ correction of the deflection deformation of furnace bottom steel beams
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[0011] Example: Correction of deflection of grouped steel beams at the bottom of a gas vertical furnace.
[0012] With reference to the accompanying drawings, the basic shape of the steel beam 9 to be corrected is I-shaped, with a total height of 600mm, a width of 200mm on the upper and lower flanges, a thickness of 30mm, and a thickness of 20mm on the web; to realize the correction device for the downward deflection of the steel beam in the manufacturing space, the correction device Comprising a box beam 1, the box beam 1 is all made of 20mm steel plates, and a pair of hanging arm groups 2 with rectangular holes 3 are respectively welded at the two ends of the box beam 1. The correction method is: hang the box girder 1 directly below the steel girder 9 to be corrected with a hoisting tool, lift the box girder 1 upwards, and insert the hanging arm group 2 on the box girder 1 into the steel girder 9 to be corrected. On both sides, clamp the steel beam 9 between the two hanging ...
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The invention relates to a method for correcting a spatially-downwarped steel beam. The correcting method is characterized in that: the corresponding device is produced, which comprises a box beam and both ends of the box beam are respectively provided with a group of paired suspension arm groups, wherein the upper part of each suspension arm group is provided with a rectangular orifice. The correcting method comprises the following steps: suspending the box beam right below the steel beam to be corrected, placing a hydraulic jack on the box beam, using an electric hydraulic oil pump to feed oil to the hydraulic jack, enabling the hydraulic jack to extend upwards and jack the downwarped part of the steel beam to exert an upward pressure on the steel beam, and repeatedly jacking and measuring until the bending value of the steel beam meets the correcting requirements. By using the steel beam as the support, suspending the box beam on the steel beam and using the hydraulic jack to jack the downwarped part so as to achieve the correcting purpose, the invention avoids the problems of high cost and long construction period caused by replacement of the steel beam.
Description
technical field [0001] The invention relates to a method for correcting steel beams deflected under space, which is used for in-situ correction of steel beams at the bottom of a group of steel beams that are seriously deflected in the overhaul project of large furnaces such as gas vertical furnaces, but is not easy to be disassembled and replaced, and belongs to steel deflected under space Beam correction technology field. Background technique [0002] In the traditional overhaul project, some parts with serious deformation are replaced. However, in some cases, corrective measures must be taken due to the constraints of the construction period and cost of the project. [0003] The gas vertical furnace is an industrial furnace specially used to dry coal to obtain gas. Its main product is gas, and its by-products mainly include coke and by-products generated during gas purification. Its main structure is a furnace body made of refractory bricks. On the steel structure furnac...
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IPC IPC(8): B21D3/14
Inventor 王永善黄金
Owner CHINA MCC 2 GRP CO LTD