CN105776011A - Method for mounting crane beam at top of blast furnace - Google Patents
Method for mounting crane beam at top of blast furnace Download PDFInfo
- Publication number
- CN105776011A CN105776011A CN201610270598.5A CN201610270598A CN105776011A CN 105776011 A CN105776011 A CN 105776011A CN 201610270598 A CN201610270598 A CN 201610270598A CN 105776011 A CN105776011 A CN 105776011A
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- China
- Prior art keywords
- diagonal brace
- crane girder
- hoist engine
- chain block
- wire rope
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000000725 suspension Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 6
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 4
- 235000011613 Pinus brutia Nutrition 0.000 claims description 4
- 241000018646 Pinus brutia Species 0.000 claims description 4
- 241001310793 Podium Species 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the field of installation of blast furnace auxiliary facilities, and discloses a method for installing a crane beam at the top of a blast furnace. The mounting method comprises the following steps: a. assembling the inclined struts and the crane beam according to a design drawing, hoisting the crane beam on the inner side of the frame, assembling and assembling the crane beam on the outer side of the frame and the auxiliary structure of the crane beam into a whole, and assembling the two inclined struts by adopting a connecting piece; b. hoisting the diagonal brace, temporarily fixing the diagonal brace column foot of the crane beam after the diagonal brace is positioned, and connecting a steel wire rope in the middle or the upper part of the diagonal brace to temporarily fix the diagonal brace; c. controlling the elevation of the crane beam outside the hoisting frame through a spirit level, controlling the straightness of the crane beam through a theodolite, connecting an inclined strut and the crane beam after alignment is finished, and loosening a hook after welding is firm; d. and installing other accessory structures. The method can effectively avoid the downwarping of the crane beam, has high installation precision, and is particularly suitable for the structure with the overhanging length of the crane beam being greater than the inner length of the frame.
Description
Technical field
The present invention relates to blast furnace affiliated facility installing area, especially a kind of blast furnace roof crane girder installation method.
Background technology
In super-huge blast furnace technology designs, furnace top equipment maintenance realizes upper and lower handling mainly through furnace roof crane.The design Lifting Capacity of furnace roof crane is typically in about 50 tons, the furnace roof Crane Beam System of carrying furnace roof crane, generally comprises two furnace roof crane girders, two floor stringers, two diagonal braces (being generally pipe), the support connecting crane girder and floor stringer and walkway board, track etc..Crane girder all adopts the mode of encorbelmenting, and varies in size according to furnace volume, and cantilever span also differs.Furnace roof diagonal brace is generally supported on blast furnace roof large platform.
Construction at present general first lifting furnace roof crane girder and floor stringer molectron, end of being encorbelmented by furnace roof crane girder in advance raises about 50mm, then lifts furnace roof crane girder diagonal brace, ultimately forms entirety.
The technical disadvantages of existing installation:
1, estimating previously according to experience, end of encorbelmenting is raised, and practice of construction deviation is bigger, it is easy to causes end downwarp of encorbelmenting, affects structure stress；
2, for crane girder cantilever span more than the structure of length in framework, because the power of encorbelmenting is too big, crane girder center of gravity is outside framework, inapplicable；
3, being unfavorable for controlling installation accuracy, installation quality is poor；
Summary of the invention
The technical problem to be solved is to provide a kind of blast furnace roof crane girder installation method, and the method can be prevented effectively from crane girder downwarp, and installation accuracy is higher.
Blast furnace roof crane girder installation method disclosed by the invention, comprises the steps:
A, according to design drawing assembly diagonal brace and crane girder, the crane girder inside framework is lifted, be overall by the crane girder outside framework and crane girder accessory structure composite assembly, employing connector is by two diagonal brace composite assemblies；
B, lifting diagonal brace, diagonal brace location after, interim fixed crane beam diagonal brace suspension column, and in the middle part of diagonal brace or top connecting steel wire ropes diagonal brace is fixed temporarily；
Crane girder outside c, lifting frame, controls crane girder absolute altitude by level gauge, controls crane girder linearity by theodolite, and centering connects diagonal brace and crane girder, firmly rear pine hook to be welded after completing；
D, other accessory structures are installed.
Preferably, in b step, first hoist engine and chain block, hoist engine and chain block are set on next layer of main frame platform of furnace roof crane girder and are connected with diagonal brace each through steel wire rope, after diagonal brace positions, by hoist engine and chain block tensioning steel wire rope, diagonal brace is fixed temporarily.
Preferably, in b step, every diagonal brace is fixed by a hoist engine and a chain block respectively temporarily, and the hoist engine for interim fixing diagonal brace is provided with coaster of remaining silent；
For every diagonal brace, welding two hangers on furnace body frame, a hanger is used for the coaster of remaining silent of wire rope hoist, and a hanger is used for fixing chain block, and the steel wire rope of interim fixing diagonal brace is connected with the coaster of remaining silent of chain block and wire rope hoist simultaneously.
Preferably, in b step, two diagonal braces are respectively welded hanger, require that the aspect ratio installation hoist engine of hanger and the podium level of chain block are higher behind diagonal brace lifting location, being connected with the hanger on diagonal brace the steel wire rope one end temporarily fixing diagonal brace, the other end is connected with hoist engine and chain block.
Preferably, in b step, before diagonal brace lifts, snap ring is adopted to be fixed on the hanger that diagonal brace welds in advance the steel wire rope one end temporarily fixing diagonal brace, other end colligation at cross-brace placement of foot, the length of steel wire rope more than the hanger of diagonal brace to the distance of chain block and hoist engine place platform；
After diagonal brace hoisted in position, separately set hoist engine and steel wire rope colligation is moved in one end of diagonal brace suspension column chain block and hoist engine place platform are connected with the coaster of remaining silent of chain block and hoist engine.
Preferably, every diagonal brace adopts 5 tons of hoist engines and 20 tons of chain blocks to fix temporarily, and the coaster of remaining silent of hoist engine adopts 20 ton 3 to take turns lifting block, and wirerope diameter Ф is 52mm.
Preferably, in a step, the crane girder inside framework adopts the mode of loose mail lifting to lift.
Preferably, the connector for reinforcing two diagonal braces is arranged at the suspension centre place of diagonal brace.
Preferably, in a step, described connector is steel pipe.
The invention has the beneficial effects as follows:
1, existing construction method estimates lower amount of deflection previously according to construction experience, practical operation error is bigger, and the installation method of the present invention preferentially installs diagonal brace, crane girder is installed and is adopted level gauge to control installed height mark, treat crane girder installation in position, after being connected firmly with diagonal brace again pine hook, crane girder downwarp can be prevented effectively from；
2, existing construction method, for crane girder cantilever span more than the structure of length in framework, because the power of encorbelmenting is too big, crane girder center of gravity is outside framework, inapplicable, and the installation method of the present invention can effectively solve this problem, and its installation accuracy is high, and quality is good.
Detailed description of the invention
The present invention is further described below.
Blast furnace roof crane girder installation method, it is characterised in that comprise the steps:
A, according to design drawing assembly diagonal brace and crane girder, the crane girder inside framework is lifted, the crane girder inside framework preferably employ loose mail lifting mode lift；Being overall by the crane girder outside framework and crane girder accessory structure composite assembly, adopt connector by two diagonal brace composite assemblies, connector generally can adopt the material such as steel pipe, shaped steel, and connector is preferably disposed on the suspension centre place of diagonal brace, to strengthen holistic resistant behavior；
B, lifting diagonal brace, diagonal brace location after, interim fixed crane beam diagonal brace suspension column, and in the middle part of diagonal brace or top connecting steel wire ropes diagonal brace is fixed temporarily；
Need when diagonal brace is fixed temporarily steel wire rope to carry out tensioning and fixing, the mode of the fixing steel wire rope of tensioning is a lot, for example with steel wire rope tensioning device or all kinds of lifting device etc., and it is preferred that, first hoist engine and chain block are set on next layer of main frame platform of furnace roof crane girder, hoist engine and chain block are connected with diagonal brace each through steel wire rope, after diagonal brace positions, by hoist engine and chain block tensioning steel wire rope, diagonal brace are fixed temporarily.
Steel wire rope can also be fixed by independent hoist engine, but its stability is relatively poor, although chain block stability is higher, is unfavorable for the tensioning of steel wire rope, adopts both coordinated mutually, so that it may better diagonal brace is fixed temporarily.
When carrying out diagonal brace and fixing temporarily, two diagonal brace entirety can be fixed, operation is relatively simple relatively, it is contemplated that reduction security risk, preferably respectively two diagonal brace steel wire ropes are fixed, every diagonal brace is fixed by a hoist engine and a chain block respectively temporarily, and the hoist engine for interim fixing diagonal brace is provided with coaster of remaining silent；
For every diagonal brace, welding two hangers on furnace body frame, a hanger is used for the coaster of remaining silent of wire rope hoist, and a hanger is used for fixing chain block, and the steel wire rope of interim fixing diagonal brace is connected with the coaster of remaining silent of chain block and wire rope hoist simultaneously.The tonnage of hoist engine and chain block needs to determine according to actual diagonal brace situation, and as a kind of optimal way, every diagonal brace adopts 5 tons of hoist engines and 20 tons of chain blocks to fix temporarily, the coaster of remaining silent of hoist engine adopts 20 ton 3 to take turns lifting block, each 3 take turns lifting block can around 6 strand steel wire ropes, and wirerope diameter Ф is 52mm.
Connection for ease of steel wire rope, it is preferred that, two diagonal braces are respectively welded hanger, require that the aspect ratio installation hoist engine of hanger and the podium level of chain block are higher behind diagonal brace lifting location, generally can differ about 2 meters, to prevent steel wire rope and the friction of main frame platform, being connected with the hanger on diagonal brace the steel wire rope one end temporarily fixing diagonal brace, the other end is connected with hoist engine and chain block.Hanger coating paint, need not cancel as permanent part.
And chain block and coaster of remaining silent is connected for ease of steel wire rope, it is preferred that, before diagonal brace lifts, snap ring is adopted to be fixed on the hanger that diagonal brace welds in advance the steel wire rope one end temporarily fixing diagonal brace, the other end with rope made of hemp colligation at cross-brace placement of foot, to avoid it that diagonal brace lifting is impacted, the length of steel wire rope more than the hanger of diagonal brace to the distance of chain block and hoist engine place platform；After diagonal brace hoisted in position, separately set hoist engine and steel wire rope colligation is moved in one end of diagonal brace suspension column chain block and hoist engine place platform are connected with the coaster of remaining silent of chain block and hoist engine.
Crane girder outside c, lifting frame, controls crane girder absolute altitude by level gauge, controls crane girder linearity by theodolite, and centering connects diagonal brace and crane girder, firmly rear pine hook to be welded after completing；
D, other accessory structures are installed, after installation is complete, except removing the equipment such as hoist engine and chain block, also can cut away the connector being connected between two diagonal braces.
Claims (9)
1. blast furnace roof crane girder installation method, it is characterised in that comprise the steps:
A, according to design drawing assembly diagonal brace and crane girder, the crane girder inside framework is lifted, be overall by the crane girder outside framework and crane girder accessory structure composite assembly, employing connector is by two diagonal brace composite assemblies；
B, lifting diagonal brace, diagonal brace location after, interim fixed crane beam diagonal brace suspension column, and in the middle part of diagonal brace or top connecting steel wire ropes diagonal brace is fixed temporarily；
Crane girder outside c, lifting frame, controls crane girder absolute altitude by level gauge, controls crane girder linearity by theodolite, and centering connects diagonal brace and crane girder, firmly rear pine hook to be welded after completing；
D, other accessory structures are installed.
2. blast furnace roof crane girder installation method as claimed in claim 1, it is characterised in that: in b step,
First on next layer of main frame platform of furnace roof crane girder, arrange hoist engine and chain block, hoist engine and chain block to be connected with diagonal brace each through steel wire rope, after diagonal brace positions, by hoist engine and chain block tensioning steel wire rope, diagonal brace is fixed temporarily.
3. blast furnace roof crane girder installation method as claimed in claim 2, it is characterised in that: in b step, every diagonal brace is fixed by a hoist engine and a chain block respectively temporarily, and the hoist engine for interim fixing diagonal brace is provided with coaster of remaining silent；
For every diagonal brace, welding two hangers on furnace body frame, a hanger is used for the coaster of remaining silent of wire rope hoist, and a hanger is used for fixing chain block, and the steel wire rope of interim fixing diagonal brace is connected with the coaster of remaining silent of chain block and wire rope hoist simultaneously.
4. blast furnace roof crane girder installation method as claimed in claim 3, it is characterised in that: in b step,
Two diagonal braces are respectively welded hanger, require that the aspect ratio installation hoist engine of hanger and the podium level of chain block are higher behind diagonal brace lifting location, being connected with the hanger on diagonal brace the steel wire rope one end temporarily fixing diagonal brace, the other end is connected with hoist engine and chain block.
5. blast furnace roof crane girder installation method as claimed in claim 4, it is characterised in that: in b step,
Before diagonal brace lifts, snap ring is adopted to be fixed on the hanger that diagonal brace welds in advance the steel wire rope one end temporarily fixing diagonal brace, other end colligation at cross-brace placement of foot, the length of steel wire rope more than the hanger of diagonal brace to the distance of chain block and hoist engine place platform；
After diagonal brace hoisted in position, separately set hoist engine and steel wire rope colligation is moved in one end of diagonal brace suspension column chain block and hoist engine place platform are connected with the coaster of remaining silent of chain block and hoist engine.
6. blast furnace roof crane girder installation method as claimed in claim 3, it is characterized in that: every diagonal brace adopts 5 tons of hoist engines and 20 tons of chain blocks to fix temporarily, the coaster of remaining silent of hoist engine adopts 20 ton 3 to take turns lifting block, and wirerope diameter Ф is 52mm.
7. blast furnace roof crane girder installation method as claimed in claim 1, it is characterised in that: in a step, the crane girder inside framework adopts the mode of loose mail lifting to lift.
8. blast furnace roof crane girder installation method as claimed in claim 1, it is characterised in that: the connector for reinforcing two diagonal braces is arranged at the suspension centre place of diagonal brace.
9. blast furnace roof crane girder installation method as claimed in claim 8, it is characterised in that: in a step, described connector is steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270598.5A CN105776011B (en) | 2016-04-27 | 2016-04-27 | Method for mounting crane beam at top of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270598.5A CN105776011B (en) | 2016-04-27 | 2016-04-27 | Method for mounting crane beam at top of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105776011A true CN105776011A (en) | 2016-07-20 |
| CN105776011B CN105776011B (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610270598.5A Active CN105776011B (en) | 2016-04-27 | 2016-04-27 | Method for mounting crane beam at top of blast furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140533A (en) * | 2017-05-25 | 2017-09-08 | 河南成兴建设工程有限公司 | A kind of hanging method of concrete T type crane girder |
| CN107475472A (en) * | 2017-08-31 | 2017-12-15 | 上海宝冶集团有限公司 | Blast furnace roof jib crane beam construction method |
| CN108894329A (en) * | 2018-06-19 | 2018-11-27 | 中国冶集团有限公司 | A kind of installation method of overhanging type tubular truss and its support rod |
| CN112944513A (en) * | 2021-02-07 | 2021-06-11 | 安徽省工业设备安装有限公司 | Hauling and installing method of overweight general ice accumulation coil pipe device |
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|---|---|---|---|---|
| CN201587950U (en) * | 2010-01-29 | 2010-09-22 | 迁安市津唐球墨铸管有限公司 | Furnace roof hydraulic cylinder lifting structure in blast furnace smelting |
| CN201665684U (en) * | 2010-03-30 | 2010-12-08 | 中国第一冶金建设有限责任公司 | Suspending tool arranged at top of blast furnace and used for suspending furnace shell and cooling wall |
| CN201756416U (en) * | 2010-07-30 | 2011-03-09 | 中冶赛迪工程技术股份有限公司 | Lifting device for overhaul of furnace top material distribution device of blast furnace |
| CN202016804U (en) * | 2011-04-11 | 2011-10-26 | 河南省中原矿山设备有限公司 | Hinge for installation of crane |
| CN203486759U (en) * | 2013-09-16 | 2014-03-19 | 中煤科工集团南京设计研究院有限公司 | Novel steel crane beam structure |
| CN104709813A (en) * | 2013-12-13 | 2015-06-17 | 中国二冶集团有限公司 | Method for mounting blast furnace framework structure by utilizing transverse hoisting beam |
-
2016
- 2016-04-27 CN CN201610270598.5A patent/CN105776011B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201587950U (en) * | 2010-01-29 | 2010-09-22 | 迁安市津唐球墨铸管有限公司 | Furnace roof hydraulic cylinder lifting structure in blast furnace smelting |
| CN201665684U (en) * | 2010-03-30 | 2010-12-08 | 中国第一冶金建设有限责任公司 | Suspending tool arranged at top of blast furnace and used for suspending furnace shell and cooling wall |
| CN201756416U (en) * | 2010-07-30 | 2011-03-09 | 中冶赛迪工程技术股份有限公司 | Lifting device for overhaul of furnace top material distribution device of blast furnace |
| CN202016804U (en) * | 2011-04-11 | 2011-10-26 | 河南省中原矿山设备有限公司 | Hinge for installation of crane |
| CN203486759U (en) * | 2013-09-16 | 2014-03-19 | 中煤科工集团南京设计研究院有限公司 | Novel steel crane beam structure |
| CN104709813A (en) * | 2013-12-13 | 2015-06-17 | 中国二冶集团有限公司 | Method for mounting blast furnace framework structure by utilizing transverse hoisting beam |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140533A (en) * | 2017-05-25 | 2017-09-08 | 河南成兴建设工程有限公司 | A kind of hanging method of concrete T type crane girder |
| CN107475472A (en) * | 2017-08-31 | 2017-12-15 | 上海宝冶集团有限公司 | Blast furnace roof jib crane beam construction method |
| CN108894329A (en) * | 2018-06-19 | 2018-11-27 | 中国冶集团有限公司 | A kind of installation method of overhanging type tubular truss and its support rod |
| CN112944513A (en) * | 2021-02-07 | 2021-06-11 | 安徽省工业设备安装有限公司 | Hauling and installing method of overweight general ice accumulation coil pipe device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105776011B (en) | 2017-12-12 |
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