The construction method of completing the installation of the main trench of the iron-making blast furnace by using the counterweight method
A technology for an iron-making blast furnace and a construction method, which is applied in the direction of a discharge device, etc., can solve the problems of increasing the main counterweight to change the center of gravity, complicated alignment and adjustment, and increasing the auxiliary counterweight, etc., and achieves high installation quality, reduced labor intensity, and safety. high effect
Active Publication Date: 2019-02-12
BEIJING SHOUGANG CONSTR GROUP
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Problems solved by technology
[0004] The object of the present invention is to provide a construction method for the installation of the main ditch of ironmaking blast furnace by using the counterweight method, that is, the construction method of increasing the main counterweight to change the center of gravity and increasing the auxiliary counterweight to make the hoisting movement stable, effectively solving the traditional The hoisting of the main ditch is cumbersome, and the alignment and adjustment are complicated. On the basis of ensuring construction safety, the construction progress is accelerated, the cost is reduced, and the installation quality of the main ditch is improved.
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[0026] 1. On site, the two sub-sections of the main ditch are combined into a whole
[0027] The blast furnace main ditch is composed of two sections, which need to be combined into a whole at the construction site. During the assembly process, the overall size of the main ditch must be ensured and the welding must be firm.
[0028] 2. Determine the stress position of the main crane
[0029] Since the width of the tuyere platform has exceeded the center of gravity of the main ditch, the main hoisting point cannot be set at the center of gravity and needs to be moved outward. The distance of the outward movement is subject to the fact that the hoisting point is not affected by the outer edge of the tuyere platform, and the main hoisting force system can be determined. 1, and the position of the main lug 3 can also be determined.
[0030] 3. Calculate the weight of the main counterweight
[0031] Because the main lifting point and the center of gravity of the main ditch are of...
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The invention discloses a construction method for completing main ditch installation of an ironmaking furnace by using a counterweight method, and belongs to the technical field of ironmaking furnace construction. The method comprises the following specific steps: combining two subsection main ditches into a whole in site, determining force location of a main crane, calculating weight of main counterweight and welding of main lugs and auxiliary lugs, increasing the main counterweight, tethering a main force system, increasing auxiliary counterweight, tethering an auxiliary force system, and lifting and installing the main ditch. The construction method for completing the main ditch installation of the ironmaking furnace by using the counterweight method has the advantages that the problems that the traditional main ditch lifting device is cumbersome to set and complex to adjust are solved effectively; and on the basis of ensuring the construction safety, the construction progress is speeded up, the cost is reduced and the installation quality of the main ditch is improved.
Description
technical field [0001] The invention belongs to the technical field of ironmaking blast furnace construction, and particularly relates to a construction method for completing the installation of the main ditch of the ironmaking blast furnace by using the counterweight method, and completing the installation of the main ditch of the ironmaking blast furnace by increasing the counterweight and changing the position of the lifting point of the center of gravity of the main ditch The construction solves the problem that the main ditch cannot be hoisted in place at one time and the segmented installation needs to be installed in place by pulling forward, pushing back, left shifting, and prying right. It is suitable for the replacement of the main ditch in the blast furnace maintenance. Background technique [0002] The steel structure of the molten iron system is composed of the main ditch, slag ditch, molten iron ditch, and residual iron ditch. The main ditch is the main channel ...
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IPC IPC(8): C21B7/14
CPCC21B7/14
Inventor 赵彦龙郭金亮张伟姜利赵荣辉李国明张有刚
Owner BEIJING SHOUGANG CONSTR GROUP