Method for removing inclined bridge of blast furnace
A technology of inclined bridges and blast furnaces, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., to achieve the effects of low cost, improved construction efficiency, and high safety
Active Publication Date: 2019-09-06
MCC5 GROUP CORP SHANGHAI
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Problems solved by technology
Since the top of the inclined bridge is an independent structure, which is not connected to the steel frame platform on the top of the blast furnace, and the top H steel is independently supported, the pretreatment of the top of the inclined bridge cannot be simply disconnected.
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[0025] The structure of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not intended as a limitation of the present invention.
[0026] Since the top of the inclined bridge is an independent structure, which is not connected to the steel frame platform on the top of the blast furnace, and the top H steel is independently supported, the pretreatment of the top of the inclined bridge cannot be simply disconnected, but divided into sections from top to bottom. Fix it first and then cut it, so that it will slowly fall to the platform under the control of the traction rope, cut off all the top and empty it, and only keep the two main trusses at the bottom of the inclined bridge without cutting. After all the pretreatment of the top and root is completed, the inclined main steel beam of the top truss is cut to make it slide down to the ground naturally.
[0027] Such as Figure 1 to Figure 4 As ...
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Abstract
The invention discloses a method for removing an inclined bridge of a blast furnace. The method comprises the following steps: removing a head sheave on a head sheave platform; cutting the head sheaveplatform into blocks according to a drawn cutting line; with an original maintenance crossbeam, manually cutting and removing supporting structural steel of the head sheave platform; manually cuttingand removing supporting and reinforcing parts of the inclined bridge on the top of a flat house, reserving the part connected with an inclined bridge furnace body, and finally shearing and cutting off the part connected with the inclined bridge furnace body by using a lengthened arm hydraulic shear; dismounting root part of the inclined bridge; cutting off the position below the joint of the inclined bridge and the inclined bridge stand column; cutters standing on a platform above the position to be cut, and cutting off the position to be cut of the top of the inclined bridge, and the inclined bridge naturally falling down under the action of gravity; the root part of the inclined bridge sliding to the ground along the outer wall of the flat house; pushing over the inclined bridge by thelengthened arm hydraulic shear, and height of the inclined bridge lowering to the position of the flat house; breaking and dismounting the inclined bridge by the lengthened arm hydraulic shear; when the inclined bridge falling to the ground, shearing and removing the inclined bridge. According to the method, construction efficiency is improved; construction safety is guaranteed; and construction cost is reduced.
Description
technical field [0001] The invention relates to the field of blast furnace maintenance, in particular to a method for dismantling a blast furnace inclined bridge. Background technique [0002] Due to the large span of the blast furnace charging inclined bridge, the steel structure has been in disrepair and corrosion for a long time, and the safety risk is too high if it is hoisted. Since the top of the inclined bridge is an independent structure, which is not connected to the steel frame platform on the top of the blast furnace, and the top H steel is independently supported, the pretreatment of the top of the inclined bridge cannot be simply disconnected. Contents of the invention [0003] The object of the present invention is to propose a method for dismantling a blast furnace inclined bridge to improve construction efficiency, ensure construction safety and reduce construction cost. [0004] The embodiment of the invention discloses a method for dismantling a blast fu...
Claims
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IPC IPC(8): B66C13/08C21B7/00
CPCB66C13/08C21B7/00Y02P10/20
Inventor 黄建军
Owner MCC5 GROUP CORP SHANGHAI