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Blast furnace inclined bridge dismantling method

A technology of inclined bridge and blast furnace, applied in blast furnace, blast furnace details, blast furnace parts and other directions, to achieve the effects of high safety, improved construction efficiency and low cost

Active Publication Date: 2022-07-12
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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  • Blast furnace inclined bridge dismantling method
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Embodiment Construction

[0025] The structure of the present invention will be further described below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0026] Since the top of the inclined bridge is an independent structure, it is not connected to the steel frame platform of the blast furnace roof, and the top H steel is independently supported. Therefore, the top pretreatment of the inclined bridge cannot be simply disconnected, but is divided into sections from top to bottom. It is fixed first and then cut, so that it slowly falls onto the platform under the control of the traction rope, and all the top is cut and processed, and then emptied, and only the two main trusses at the lower part of the inclined bridge are not cut for the time being. After the top and roots are all pretreated, the top truss is cut diagonally to the main steel beam so that it naturally slides down to the ground.

[0027] like Figure 1 to Figure ...

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Abstract

The embodiment of the invention discloses a method for dismantling a blast furnace inclined bridge, comprising the following steps: dismantling the sky wheel on the sky wheel platform; cutting the sky wheel platform block by block according to the drawn cutting line; using the original maintenance beam, the construction personnel Remove the supporting structural steel of the skywheel platform by manual cutting; remove the supporting and reinforced part of the inclined bridge at the top of the bungalow by manual cutting, keep the connection with the furnace body of the inclined bridge, and finally cut it off with hydraulic shears with the extended arm; remove the root of the inclined bridge; remove the inclined bridge The position below the junction of the bridge and the column of the inclined bridge, the cutting station stands on the platform above the waiting position, and cuts off the position to be cut at the top of the inclined bridge, so that the inclined bridge falls naturally under the action of its own gravity, and the root of the inclined bridge slides along the outer wall of the bungalow. When it reaches the ground, the inclined bridge is pushed down with the hydraulic shears with the extension arm, and the height is lowered to the position of the bungalow; the hydraulic shears with the extension arm are used for breaking and dismantling until the inclined bridge falls to the ground and is removed by shearing. The present invention improves the construction efficiency and ensures the construction Safety and reduce construction costs.

Description

technical field [0001] The invention relates to the field of blast furnace maintenance, in particular to a method for dismantling an inclined bridge of a blast furnace. Background technique [0002] Due to the large span of the blast furnace charging inclined bridge, the steel structure has been in disrepair and rusted seriously. If the hoisting is used, the safety risk is too high. Since the top of the inclined bridge is an independent structure, it is not connected to the steel frame platform of the blast furnace roof, and the top H steel is independently supported, so the pretreatment of the top of the inclined bridge cannot be simply disconnected. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to propose a blast furnace inclined bridge dismantling method to improve construction efficiency, ensure construction safety and reduce construction cost. [0004] The embodiment of the present invention discloses a blast furnace inclined bridge disman...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/08C21B7/00
CPCB66C13/08C21B7/00Y02P10/20
Inventor 黄建军
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED
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