CN100480398C - Self-hoisting construction method and furnace top crane for general overhaul of blast furnace - Google Patents
Self-hoisting construction method and furnace top crane for general overhaul of blast furnace Download PDFInfo
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- CN100480398C CN100480398C CNB2006100706068A CN200610070606A CN100480398C CN 100480398 C CN100480398 C CN 100480398C CN B2006100706068 A CNB2006100706068 A CN B2006100706068A CN 200610070606 A CN200610070606 A CN 200610070606A CN 100480398 C CN100480398 C CN 100480398C
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- blast furnace
- heater
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- hoisting
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Abstract
The present invention relates to blast furnace maintaining technology, and is especially furnace body assembling and disassembling self-hoisting construction method and furnace top crane for overhaul of blast furnace. The construction method includes the steps of disassembling partial steel frame in one side of the blast furnace and reinforcing the frame to form hoisting passage; laying two horizontal trusses in the furnace top and on the hoisting passage side and installing a bridge crane; and disassembling the old furnace body and assembling the new furnace body with the bridge crane. The present invention has high construction speed, high engineering quality and greatly lowered cost.
Description
Technical field
The invention discloses in a kind of blast furnace overhaul process, the dismounting body of heater from construction method for hanging and furnace roof tackle gear.Belong to blast furnace maintenance technique field.
Background technology
Present domestic iron-smelting blast furnace One's name is legion, iron-smelting blast furnace will carry out large repairs every several years, and body of heater is changed.Before the present invention makes, change in the body of heater process, crawler mounted crane or truck crane are generally adopted in the dismounting construction, carry out the installation lifting operation of parts such as last furnace shell.This traditional construction technology in the blast furnace overhaul process, weight handling equipment is subjected to site influence big, and lifting cost is long in time limit with height, lifting.Arrange close quarters in some production technique, crawler mounted crane or truck crane can't arrange that lifting speed is slow, the location is inaccurate, cause many original blast furnace facilities effectively to utilize.
Summary of the invention
The present invention is directed to the problem of prior art, provide a kind of efficient blast furnace overhaul dismounting body of heater from construction method for hanging and furnace roof tackle gear.
The technical characterictic from construction method for hanging of body of heater of the present invention is:
1, removes the part steel frame of blast furnace one side, form the body of heater hoisting passage;
2, the blast furnace steel frame is reinforced;
3,, lay the horizontal truss of two body of heater steel frames of encorbelmenting, and bridge crane is installed in furnace roof portion body of heater hoisting passage one side;
4, utilize the bridge crane segmental hoisting body of heater that is installed on the horizontal truss, finish the dismounting operation.
The technical characterictic of furnace roof tackle gear of the present invention is:
1, the horizontal truss of two body of heater steel frames of encorbelmenting that link to each other with blast furnace furnace roof steel frame;
2, place two bridge cranes on the horizontal truss.
Below introduce particular case of the present invention in detail: a kind of blast furnace overhaul dismounting body of heater from construction method for hanging, it is characterized in that removing earlier the part steel frame of blast furnace one side, form the body of heater hoisting passage, and the blast furnace steel frame reinforced; In furnace roof portion body of heater hoisting passage one side, lay the horizontal truss of two body of heater steel frames of encorbelmenting, and bridge crane is installed; Remove old body of heater with the bridge crane segmental hoisting that is installed on the horizontal truss, then that new body of heater segmental hoisting is in place, finish lifting operation.
A kind of furnace roof of lifting certainly tackle gear of blast furnace overhaul dismounting body of heater, it is characterized in that comprising the horizontal truss of two body of heater steel frames of encorbelmenting that link to each other with blast furnace furnace roof steel frame, the guide rail of installing on the horizontal truss places bridge crane three parts on the guide rail to form.
Working process of the present invention is: during dismounting, the bridge crane body of heater of slinging goes out steel frame from the translation of body of heater hoisting passage, is placed on the flatcar and transports; Bridge crane is sling the new body of heater that flatcar ships during installation, advances steel frame from the translation of body of heater hoisting passage, is placed on the body of heater pedestal.
Advantage of the present invention is effectively to utilize the blast furnace existing facility, has accelerated construction speed, has shortened the duration, has ensured construction quality, reduces crane One-Shift Costs and other expenses, surplus every blast furnace direct economic benefit 600 ten thousand yuan.This method can be promoted the use of on other blast furnaces, will produce huge economic benefit.
Description of drawings
Accompanying drawing 1 is the blast furnace steel-frame structure synoptic diagram of dismounting body of heater hoisting passage of the present invention.The horizontal truss vertical view of two body of heater steel frames of encorbelmenting that accompanying drawing 2 blast furnace furnace roofs lay.Among the figure: 1-horizontal truss, 2-body of heater steelframe is severed part, 3-23 meters platforms, 4-20 meters platforms, 5-18 meters platforms, 6-30 rice platform, 7-hoisting passage, 8-furnace roof, 9-former framework, 10-original anchor head hanging beam.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Present embodiment is 750M
3Blast furnace be suitable for the concrete grammar step:
1, sets up one of Q40/10 ton bridge crane at relative level 53.990 platforms, horizontal truss 1 is on-the-spot splicing steel crane beam, and steel material is Q345-C, and section form is an I shape, cross section, last lower flange is 500 mm wides, 25 mm thick, and web plate section is 1450 millimeters high, 14 mm thick; Vertical support three roads are established in the end, and section form is a bridging, 2 group of 125 * 10 angle steel, and steel material is Q235-B; If horizontal support twice, section form are bridgings, 2 group of 125 * 10 angle steel, steel material is Q235-B; Lay QU70 type track above the horizontal truss 1.See accompanying drawing 2 for details.
2,18.000 meters platform parts of relative level are reinforced footing beam column, replacing section steel landing slab, newly-increased two H steel columns.
3,20.880 meters platform parts of relative level are reinforced footing beam column, newly-increased two H steel columns.
4,23.770 meters platform parts of relative level are reinforced footing beam column, newly-increased four H steel columns, two triangular support.
5, to the newly-increased four H steel columns of 26.250 meters platforms of relative level, two landing beams.Cut off the Vierendeel girder between former high furnace frame B axis Z-1 post and the Z-2 post, form hoisting passage wide 11.4 meters, high 5.35.
6,30.350 meters platform parts of relative level are reinforced footing beam column, newly-increased four H steel columns, two landing beams.Cut off the Vierendeel girder of former high furnace frame B axis, form wide 4 meters hoisting passage.See accompanying drawing 1 for details.
7,38.950 meters platform parts of relative level are reinforced footing beam column, newly-increased four landing beams.Cut off the Vierendeel girder of former high furnace frame B axis, form wide 4 meters hoisting passage.See accompanying drawing 1 for details.
8,43.700 meters platform parts of relative level are reinforced footing beam column, newly-increased six roots of sensation landing beam.Cut off the Vierendeel girder of former high furnace frame B axis, form wide 4 meters hoisting passage.See accompanying drawing 1 for details.
9,47.770 meters platform parts of relative level are reinforced footing beam column, newly-increased six roots of sensation landing beam.Cut off the Vierendeel girder of former high furnace frame B axis, form wide 4 meters hoisting passage.See accompanying drawing 1 for details.
10,53.990 meters platform parts of relative level are reinforced newly-increased two landing beams.
11,57.120 meters furnace roof truss-steel beams of relative level are reinforced.
12, hoisting passage side blast furnace steelframe is reinforced.
13, newly increase 15.01 meters, wide 10 meters right-angle triangle sub-trusses in the blast furnace discharge yard side.
14, newly-increased high 15.01 meters, wide 10 meters right-angle triangle sub-trusses in the blast-furnace hot-air furnace side.
Concrete advantage, characteristics, positively effect:
No. 2 750M of our factory
3The blast furnace overhaul engineering because the place is narrow, through repeatedly research discussion, can't adopt the integral translation constructional method, can only adopt the ordinary method construction.
The Hoisting Program of conventional constructional method when carrying out the furnace shell installation: the general employing hangs in installation in position from the top, needs to remove coal gas rising, downtake, furnace top frame.Because coal gas downtake weight big (more than 100 tons), middle no point of suppon must once hang down during dismounting, in conjunction with crane occupy-place position, must adopt 800t and above crane (large-scale tower crane can't be installed because the place is narrow) according to coal gas downtake weight.Needed expense is: lifting cost is with ten thousand yuan (containing a turnover expense) surplus 800; Need replace with riser, downtake (about 150 tons, 245 tons of spray materials), the furnace roof steelframe is not changed, about 150 * (5000+2500) unit/tons of expense+(245 * 2100 yuan/ton+1800 * 610 yuan/square metre)=2,740,000 yuan.Cost ten thousand yuan of usefulness=800+274=1074 altogether.Required expense is bigger.
No. 2 750M
3Adopted " blast furnace overhaul dismounting stove is from construction method for hanging and furnace roof tackle gear " technology in the blast furnace overhaul process: furnace shell hangs in installation in place from a side, be about to the bed rearrangement blast furnace and be divided into 16 bands, take after factory-assembled is finished a band, integral body is transported to the arrangement and method for construction that lifts behind the scene.Like this in the processing quality that can guarantee furnace shell, again can accelerating construction progress.Hoisting machine tool has been selected for use crane beam west, State of Blast Furnace top has been delayed, and a 40t driving that newly adds is carried out the hoisted in position of furnace shell by newly adding driving.This has been carried out the reinforcing of furnace roof steelframe, invited the professional certifying agency of Xi'an University of Architecture and Technology that Scheme of Strengthening is identified and provided to the blast furnace steelframe.Required expense is 1,300,000 yuan of (identifying the Design of Reinforcement executive cost)+400,000 yuan (furnace roof dolly expenses)+3,000,000 yuan of (300t and following crane costs of 300t of alternative 800t crane work, can not use the furnace roof traveled portion)=4,700,000 yuan, cost saving 1074-470=604 is surplused ten thousand yuan.Save executive cost greatly, shortened the construction period, ensured construction quality.
Claims (2)
1, a kind of blast furnace overhaul dismounting body of heater from construction method for hanging, it is characterized in that removing earlier the part steel frame of blast furnace one side, form the body of heater hoisting passage, and the blast furnace steel frame reinforced; In furnace roof portion body of heater hoisting passage one side, lay the horizontal truss of two body of heater steel frames of encorbelmenting that link to each other with blast furnace furnace roof steel frame, and bridge crane is installed; Remove old body of heater with the bridge crane segmental hoisting that is installed on the horizontal truss, then that new body of heater segmental hoisting is in place, finish lifting operation.
2, a kind of furnace roof of lifting certainly tackle gear of used blast furnace overhaul dismounting body of heater in construction method for hanging of realizing the described blast furnace overhaul dismounting of claim 1 body of heater, it is characterized in that comprising the horizontal truss of two body of heater steel frames of encorbelmenting that link to each other with blast furnace furnace roof steel frame, the guide rail of installing on the horizontal truss places bridge crane three parts on the guide rail to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100706068A CN100480398C (en) | 2006-12-01 | 2006-12-01 | Self-hoisting construction method and furnace top crane for general overhaul of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100706068A CN100480398C (en) | 2006-12-01 | 2006-12-01 | Self-hoisting construction method and furnace top crane for general overhaul of blast furnace |
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| Publication Number | Publication Date |
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| CN1974792A CN1974792A (en) | 2007-06-06 |
| CN100480398C true CN100480398C (en) | 2009-04-22 |
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| CNB2006100706068A Expired - Fee Related CN100480398C (en) | 2006-12-01 | 2006-12-01 | Self-hoisting construction method and furnace top crane for general overhaul of blast furnace |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4351288B2 (en) * | 2007-08-09 | 2009-10-28 | 新日鉄エンジニアリング株式会社 | Ring block transfer device and blast furnace furnace repair method |
| CN101935721B (en) * | 2009-06-30 | 2012-09-05 | 上海宝冶建设有限公司 | Method for integrally dismounting and installing furnace top system of blast furnace |
| CN101812558B (en) * | 2010-04-02 | 2011-10-19 | 攀钢集团冶金工程技术有限公司 | Construction method for replacing intermediate furnace body of blast furnace |
| CN102674212B (en) * | 2012-05-30 | 2014-09-03 | 四川公路桥梁建设集团有限公司 | Simple detachable lifting and unloading beam equipment and construction method thereof |
| CN103233089A (en) * | 2013-05-05 | 2013-08-07 | 中国十九冶集团有限公司南京分公司 | Method for inversely installing blast furnace shell |
| CN108823344B (en) * | 2018-08-09 | 2020-04-14 | 上海二十冶建设有限公司 | Method for dismantling hot blast stove drying device in limited space |
| CN110203825B (en) * | 2019-06-21 | 2022-07-12 | 五冶集团上海有限公司 | Blast furnace inclined bridge dismantling method |
| CN114480758B (en) * | 2021-12-23 | 2023-07-14 | 中国华冶科工集团有限公司 | Modular dismantling method for blast furnace frame |
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| CN1974792A (en) | 2007-06-06 |
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