CN103233087A - Method for lifting downcomer of blast furnace - Google Patents
Method for lifting downcomer of blast furnace Download PDFInfo
- Publication number
- CN103233087A CN103233087A CN2013101476260A CN201310147626A CN103233087A CN 103233087 A CN103233087 A CN 103233087A CN 2013101476260 A CN2013101476260 A CN 2013101476260A CN 201310147626 A CN201310147626 A CN 201310147626A CN 103233087 A CN103233087 A CN 103233087A
- Authority
- CN
- China
- Prior art keywords
- downtake
- lifting
- lifting rope
- suspension centre
- gravity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a method for lifting a downcomer. The method comprises the following steps that: A, a gravity center position of the downcomer is confirmed; B, positions of a main lifting point and an auxiliary lifting point are confirmed according to the gravity center position, and a cross section in which the main lifting point is located is allowed to pass through the gravity center or to shift upward slightly relative to the gravity center; C, a first lifting rope and a second lifting rope are fixedly connected with the main lifting point and the auxiliary lifting point of the downcomer respectively; and D, under the condition that an inclination angle of the downcomer is equal to a preset lifting angle all the time, the downcomer is lifted to the preset height, and is butted between upper and lower end connectors of the downcomer. The method simplifies a lifting technique, improves the lifting reliability, lowers the lifting cost and shortens the lifting time.
Description
Technical field
The present invention relates to blast furnace lifting field, more particularly, the present invention relates to a kind of method of the downtake lifting for blast furnace.
Background technology
In the installation process of blast furnace, the difficulty of the lifting of downtake is bigger.Generally speaking, length, weight and hoisting height for lifting components, downtake is one of member maximum in the blast furnace hoisting process, and in the hoisting process of downtake, also need to install its attached member, for example ladder, upper pipe stand etc., this has strengthened hoisting difficulty to a certain extent further.
Therefore, provide a kind of method of simple, reliable downtake lifting so that the simplification of blast furnace mounting process is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of the present invention is to provide a kind of method of the downtake lifting for blast furnace, to simplify the hoisting of downtake, improve the reliability of downtake lifting, reduce hoisting cost and shorten the lifting time.
To achieve these goals, the invention provides a kind of method of the downtake lifting for blast furnace, said method comprising the steps of:
A, determine the position of centre of gravity of downtake;
B, determine the position of main suspension centre and auxiliary suspension centre according to position of centre of gravity, and the cross section that makes main suspension centre place is by center of gravity or with respect to slightly upwards skew of center of gravity;
C, the first lifting rope and the second lifting rope be fixedly attached to main suspension centre place and the auxiliary suspension centre place of downtake respectively;
D, equal all the time downtake to be lifted to predetermined height, and downtake is docked between the upper/lower terminal interface under the state of predetermined lifting angle at the angle of inclination of downtake.
Preferably, when the cross section at main suspension centre place passed through the center of gravity of downtake, auxiliary suspension centre was positioned at main suspension centre above and below; When main suspension centre slightly upwards was offset with respect to center of gravity, auxiliary suspension centre was positioned at the below of center of gravity.
Preferably, step C comprises:
C1, main card tool and auxiliary jig are respectively fixed to main suspension centre and auxiliary suspension centre;
C2, the first lifting rope and the second lifting rope are connected respectively to downtake and auxiliary jig, and fix relative position relation between the first lifting rope and the second lifting rope and the downtake respectively by described main card tool and auxiliary jig.
Preferably, main card tool and auxiliary jig are welded to main suspension centre and auxiliary suspension centre respectively.
Preferably, an end of the first lifting rope is connected to downtake, and the other end is connected to the suspension hook of hanging device, and an end of the second lifting rope is connected to auxiliary jig, and the other end is connected to the suspension hook of hanging device.
Preferably, the first lifting rope circumferentially is connected to downtake along downtake, and the part with the downtake contact of the first lifting rope is positioned at identical cross section with main suspension centre.
Preferably, step D comprises:
D1, before the lifting downtake, regulate the angle of inclination of downtake by the lifting length of regulating the second lifting rope, so that the angle of inclination of downtake equals predetermined lifting angle;
D2, under the constant situation in the angle of inclination that makes downtake, with the downtake lifting to predetermined height;
D3, downtake is docked between the upper/lower terminal interface of downtake.
Preferably, the described second lifting rope is jack.
When needs carry out the lifting operation of downtake, at first the first lifting rope and second to be lifted predetermined main suspension centre and the auxiliary suspension centre place that rope is connected respectively to downtake.If the cross section of main suspension centre is by the center of gravity of downtake, first lifting is restricted and also can be passed through the center of gravity of downtake all the time in hoisting process so, downtake just is in the stress balance state all the time, and the second lifting rope is stressed or be subjected to respect to the negligible little power of the first lifting rope hardly.If the cross section of main suspension centre is with respect to slightly upwards skew of center of gravity, the first lifting rope is positioned at the center of gravity position slightly on the upper side of downtake in hoisting process so, the second lifting rope then bears certain pulling force, downtake keeps equilibrium state under the pulling force effect of gravity, the first lifting rope and the second lifting rope, and the pulling force on the first lifting rope is wanted obvious pulling force greater than the second lifting rope, that is to say, can change the pulling force that the second lifting rope is subjected to significantly by the main hoisting point position that changes the first lifting rope; In addition, in the above two kinds of cases, all can regulate the angle of inclination of downtake by the lifting length that changes the second lifting rope, guarantee that in hoisting process the angle of inclination of downtake equates with predetermined lifting angle all the time.With downtake lifting to predetermined height, just downtake can be docked to the docking port place of upper and lower ends, the first lifting rope and second lifting being restricted etc. disassembles the lifting operation of just finishing downtake again.
Hanging method provided by the present invention, the first lifting rope mainly bears pulling force, and the second lifting rope does not stress substantially or is stressed less, can realize adjusting to the angle of inclination of downtake more accurately and easily by the lifting length of regulating the second lifting rope simultaneously, thereby significantly simplified the hoisting of downtake, improve the reliability of downtake lifting, and reduced hoisting difficulty and construction cost, shortened the lifting operation time.
Description of drawings
Fig. 1 illustrates the lifting synoptic diagram of downtake according to an embodiment of the invention;
Fig. 2 is the lifting synoptic diagram that downtake according to another embodiment of the present invention is shown.
Embodiment
Core of the present invention has been to provide a kind of method of the downtake lifting for blast furnace, to simplify the hoisting of downtake, improves the reliability of downtake lifting, reduces hoisting cost and time.
In order to make those skilled in the art can better understand the present invention, below by describing the present invention in conjunction with the accompanying drawings and embodiments.
Fig. 1 illustrates the lifting synoptic diagram of downtake according to an embodiment of the invention, and Fig. 2 is the lifting synoptic diagram that downtake according to another embodiment of the present invention is shown.
See figures.1.and.2, when carrying out the lifting operation of downtake 1, the method for downtake 1 lifting provided by the present invention may further comprise the steps:
S1 determines the center of gravity G position of downtake 1.
In an embodiment of the present invention, downtake 1 is straight tube, can determine the center of gravity G position of downtake 1 by Theoretical Calculation roughly.
S2 determines the position of main suspension centre 4 and auxiliary suspension centre 5 according to center of gravity G position, and the cross section at landlord's suspension centre 4 places slightly upwards is offset by center of gravity G or with respect to center of gravity G.
In the process of lifting downtake 1, need regulate downtake 1 in advance with respect to the tilt angle alpha on ground by adjusting the second lifting rope 3, and this tilt angle alpha need equal predetermined lifting angle, and this predetermined lifting angle can guarantee downtake can be connected on the docking port of upper and lower end in that downtake 1 lifting is no longer needed to readjust tilt angle alpha to the suitable height.In an embodiment of the present invention, described tilt angle alpha is the angle between the axis of sea line and downtake 1.
For first kind of position, as shown in Figure 1, main suspension centre 4 is positioned on the cross section identical with center of gravity G of downtake 1.In this case, two auxiliary suspension centres 5 can be set, described two auxiliary suspension centres 5 lay respectively at the both sides up and down of main suspension centre 4 or center of gravity G, that is to say, auxiliary suspension centre 5 lays respectively at the above and below of main suspension centre 4.Can set according to the operating environment of reality for the axial distance between auxiliary suspension centre 5 and the main suspension centre 4, as long as can make things convenient for the adjusting at the angle of inclination of following lifting and downtake 1.
For second kind of position, as shown in Figure 2, main suspension centre 4 is positioned on the different cross section of downtake 1 with center of gravity G, and main suspension centre 4 axially upwards is offset certain distance with respect to center of gravity G slightly along downtake 1.In this case, an auxiliary suspension centre 5 can only be set, this auxiliary suspension centre 5 is arranged on the below of center of gravity G.For the position of auxiliary suspension centre 5, can set according to the operating environment of reality, as long as can make things convenient for the adjusting at the angle of inclination of following lifting and downtake 1.
S3, the first lifting rope, the 2 and second lifting rope 3 is fixedly attached to main suspension centre 4 places and auxiliary suspension centre 5 places of downtake 1 respectively.
The embodiment that the first lifting rope, the 2 and second lifting rope 3 is connected to securely main suspension centre 4 places of downtake 1 and auxiliary suspension centre 5 places respectively is a lot, for example, can be at main suspension centre 4 and auxiliary suspension centre 5 places fixedly main card tool and auxiliary jig respectively, can realize fixed relationship between suspension centre and the jig by welding particularly.Then, the first lifting rope 2 is connected to downtake 1, and utilize the fixedly relative position relation between downtake 1 and the first lifting rope 2 of main card tool, can make the first lifting rope 2 pass the main card tool according to the mode that circumferentially centers on downtake 1 along downtake 1 in the first lifting rope 2 particularly, the lifting rope of winning is 1 can be positioned at identical cross section with main suspension centre 4 with contact part downtake 1 thereby making, as depicted in figs. 1 and 2, and other parts of the first lifting rope 2 are in vertical state roughly.As mentioned above, also there is two states in the first lifting rope 2, and a kind of is center of gravity G by downtake 1, and another kind is with respect to slightly upwards skew of center of gravity G.For the second lifting rope 3, can be connected to auxiliary jig, particularly, can directly be hung on the auxiliary jig.
One end of the first lifting rope 2 can be connected to downtake 1, and the other end can be connected to outside hanging device, for example on the suspension hook of crane or tackle purchase.Equally, an end of the second lifting rope 3 can be connected to auxiliary jig, and the other end can be connected to outside hanging device, for example on the suspension hook of crane or tackle purchase.
When the cross section at main suspension centre 4 places passes through the center of gravity G of downtake 1, owing to be provided with two auxiliary suspension centres 5 that lay respectively at main suspension centre both sides about in the of 4, correspondingly should connect two second lifting ropes 3 respectively.This be because, if main suspension centre 4 is by center of gravity G, then in hoisting process, downtake 1 is in equilibrium state under the pulling force effect of himself gravity and the first lifting rope 2, its angle of inclination may be in the state of change at random, therefore auxiliary suspension centre 5 need all be set in the both sides of main suspension centre 4 and correspondingly respectively connect one second lifting rope 3 at two auxiliary suspension centre 5 places, with the purpose that can realize the angle of inclination of downtake 1 is regulated.
In addition, because main suspension centre 4 makes not only that by center of gravity G two second lifting ropes 3 need be set may be caused inconvenient operation in inconvenience or the hoisting process is regulated at the angle of inclination of downtake 1 simultaneously, therefore, the present invention preferably makes main suspension centre 4 with respect to slightly upwards skew of center of gravity G.When the cross section at main suspension centre 4 places upwards is offset slightly with respect to center of gravity G, owing to only below center of gravity G, be provided with an auxiliary suspension centre 5, get final product so can correspondingly only connect one second lifting rope 3.
In addition, the present invention is not limited to above form, center of gravity place or center of gravity position slightly on the upper side at downtake 1, namely, the position at main suspension centre 3 places, when having the structure formation of reducing, and the diameter of the position at main suspension centre 4 places is less with respect to other parts, the first lifting rope 2 can be able to be connected described reducing place, at this moment also can guarantee relative slippage can not to take place between the first lifting rope 2 and the downtake 1 under the situation that the main card tool is not set.In addition, can also adopt other suitable consolidated forms to fix the first lifting rope, the 2 and second lifting rope 3, relative slippage can not take place as long as can guarantee between the first lifting rope, the 2 and second lifting rope 3 and the downtake 1.
When lifting, the first lifting rope 2 mainly plays the effect of lifting, need bear bigger pulling force, therefore, first intensity that lifts rope 2 is had higher requirement.The second lifting rope 3 mainly is for the angle of inclination of downtake 1 is regulated, therefore, and less demanding to the intensity of the second lifting rope 3, but should require the length of the second lifting rope 3 to be easy to regulate, for example, can adopt jack as the second lifting rope 3.
S4 equals in the tilt angle alpha of downtake 1 downtake 1 to be lifted to predetermined height, and downtake 1 is docked between the upper/lower terminal fixed interface of downtake under the state of predetermined lifting angle all the time.Wherein, the upper/lower terminal of downtake described here has been finished lifting in advance, that is, the upper end of downtake has been installed on the blast furnace, and the lower end of downtake is installed on the fly-ash separator.
Can adopt the peripheral hardware hanging device such as tackle purchase or crane etc. to carry out the lifting of downtake 1.
Before the lifting of carrying out downtake 1, need proceed to predetermined lifting angle to the tilt angle alpha of downtake 1, thus the tilt angle alpha that all no longer needs to regulate downtake 1 when lifting and during follow-up butt joint.Specifically, after being connected to the first lifting rope, the 2 and second lifting rope 3 on the downtake 1, can be according to the predetermined lifting angle of downtake 1 (namely, angle in the time of should predeterminedly lifting angle for butt joint downtake 1), the length apart from the calculating place second lifting rope 3 between the length of the first lifting rope 2 and auxiliary suspension centre 5 and the main suspension centre 4, predetermined length according to calculating place, length to the second lifting rope 3 is regulated, make the lifting length of the second lifting rope 3 equal the described predetermined length that calculates, just the tilt angle alpha of downtake 1 can be adjusted to predetermined lifting angle and equate, carry out the lifting of downtake 1 afterwards again.Lifting length of the present invention is from assisting suspension centre 5 to the length the suspension hook of the peripheral hardware hanging device that connects the second lifting rope 3.Like this, in hoisting process, can guarantee that just the tilt angle alpha of downtake 1 can not change, and equal the pre-determined tilt angle all the time.
In the angle of inclination process of regulating downtake 1, as shown in Figure 2, when the tilt angle alpha of downtake 1 is excessive, can shorten the lifting length of the second lifting rope 3 tilt angle alpha is decreased to the angle that downtake 1 is installed; When tilt angle alpha is too small, can increase the lifting length of the second lifting rope 3 tilt angle alpha is increased to the angle that downtake 1 is installed.
When center of gravity G by downtake 1 of the first lifting rope 2 and main suspension centre 4, in hoisting process, downtake 1 is in the stress balance state all the time under the effect of the pulling force of the first lifting rope 2 and self gravitation, and, lift under the coordinative role of rope 3 in second of the above and below that lays respectively at main suspension centre 4, the angle of inclination that the tilt angle alpha of downtake 1 maintains original start substantially (namely, predetermined lifting angle) bigger change can not take place, and the second lifting rope 3 is stressed or be subjected to respect to the first lifting rope, 2 negligible little power hardly, thereby the height that can easily downtake 1 lifting extremely be scheduled to, and dock operation.
During on the upper side position of the center of gravity that is positioned at downtake 1 when the first lifting rope 2, the second lifting rope 3 can bear certain pulling force, downtake 1 keeps the stress balance state under the pulling force effect of self gravitation, the first lifting rope, the 2 and second lifting rope 3, and the pulling force on the first lifting rope 2 is wanted obviously greater than the pulling force on the second lifting rope 3, that is, the first lifting rope 2 bears the pulling force of the overwhelming majority basically.
Though in these cases, the second lifting rope, 3 pulling force that are subjected to will be much smaller than the first lifting rope, 2 pulling force that are subjected to, and the pulling force of the second lifting rope 3 can not exceed maximum supporting capacity.Simultaneously, distance between main suspension centre 4 and the center of gravity G changes, then the second lifting rope, 3 pulling force that are subjected to will change simultaneously, therefore, also this situation should be considered when in step S2, determining the position of main suspension centre and auxiliary suspension centre, the maximum pull that can bear can be do not exceeded to guarantee the second lifting rope, 3 pulling force that are subjected to.Therefore, can also choose suitable jack as the second lifting rope 3 according to the second lifting rope, the 3 pulling force sizes that are subjected to.
As mentioned above, when needs lifting downtake 1, at first the first lifting rope, the 2 and second lifting rope 3 is connected to main suspension centre 4 and auxiliary suspension centre 5 places of downtake 1, and the relative position relation of the first lifting rope, the 2 and second lifting rope 3 between downtake 1 fixed; Utilize the hanging device of peripheral hardware to carry out the lifting of downtake 1, before lifting, can regulate the tilt angle alpha of downtake 1 by the length of adjusting the second lifting rope 3, guarantee that tilt angle alpha equals predetermined lifting angle; Tilt angle alpha at downtake 1 equals under the situation of predetermined lifting angle all the time, and just downtake 1 lifting is docked at downtake 1 upper/lower terminal docking port place again to predetermined butt joint height, just can finish the lifting of downtake 1; At last the first lifting rope, the 2 and second lifting rope 3 is disassembled from downtake 1 and get final product.
Method for downtake 1 lifting provided by the present invention, the first lifting rope 2 mainly bears pulling force, and the second lifting rope 3 does not stress substantially or is stressed less, can realize the adjusting at the angle of inclination of downtake 1 more accurately and easily by the lifting length of regulating the second lifting rope 3 simultaneously and can not make that the second lifting rope, 3 pulling force that are subjected to are excessive, thereby significantly simplified the hoisting of downtake, improved the reliability of downtake lifting, and reduced lifting operation difficulty and cost, shorten the lifting operation time.
In addition, lifting principle provided by the present invention also can be used for the lifting operation of other main equipments except being used for the lifting downtake.
Above the method for the downtake lifting for blast furnace provided by the present invention is described in detail; though represented and described some embodiments of the present invention; but those skilled in the art should understand that; under the situation that does not break away from the principle of the present invention that limited its scope by claim and equivalent thereof and spirit; can make amendment and perfect these modifications and improve also should be in protection scope of the present invention to these embodiment.
Claims (8)
1. a method that is used for the downtake lifting of blast furnace is characterized in that, comprising:
A, determine the position of centre of gravity of downtake;
B, determine the position of main suspension centre and auxiliary suspension centre according to position of centre of gravity, and the cross section that makes main suspension centre place is by center of gravity or with respect to slightly upwards skew of center of gravity;
C, the first lifting rope and the second lifting rope be fixedly attached to main suspension centre place and the auxiliary suspension centre place of downtake respectively;
D, equal all the time downtake to be lifted to predetermined height, and downtake is docked between the upper/lower terminal interface of downtake under the state of predetermined lifting angle at the angle of inclination of downtake.
2. method according to claim 1 is characterized in that, when the cross section at main suspension centre place passed through the center of gravity of downtake, auxiliary suspension centre was positioned at main suspension centre above and below; When main suspension centre slightly upwards was offset with respect to center of gravity, auxiliary suspension centre was positioned at the below of center of gravity.
3. method according to claim 1 is characterized in that, step C comprises:
C1, main card tool and auxiliary jig are respectively fixed to main suspension centre and auxiliary suspension centre;
C2, the first lifting rope and the second lifting rope are connected respectively to downtake and auxiliary jig, and fix relative position relation between the first lifting rope and the second lifting rope and the downtake respectively by described main card tool and auxiliary jig.
4. method according to claim 3 is characterized in that, main card tool and auxiliary jig are welded to main suspension centre and auxiliary suspension centre respectively.
5. method according to claim 3 is characterized in that, an end of the first lifting rope is connected to downtake, and the other end is connected to the suspension hook of hanging device, and an end of the second lifting rope is connected to auxiliary jig, and the other end is connected to the suspension hook of hanging device.
6. method according to claim 1 is characterized in that, the first lifting rope circumferentially is connected to downtake along downtake, and the part with the downtake contact of the first lifting rope is positioned at identical cross section with main suspension centre.
7. method according to claim 1 is characterized in that, step D comprises:
D1, before the lifting downtake, regulate the angle of inclination of downtake by the lifting length of regulating the second lifting rope, so that the angle of inclination of downtake equals predetermined lifting angle;
D2, under the constant situation in the angle of inclination that makes downtake, with the downtake lifting to predetermined height;
D3, downtake is docked between the upper/lower terminal interface of downtake.
8. according to any described method of claim 1 to 7, it is characterized in that the described second lifting rope is jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310147626.0A CN103233087B (en) | 2013-04-25 | 2013-04-25 | For the method that the downtake of blast furnace lifts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310147626.0A CN103233087B (en) | 2013-04-25 | 2013-04-25 | For the method that the downtake of blast furnace lifts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103233087A true CN103233087A (en) | 2013-08-07 |
| CN103233087B CN103233087B (en) | 2015-09-16 |
Family
ID=48881151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310147626.0A Active CN103233087B (en) | 2013-04-25 | 2013-04-25 | For the method that the downtake of blast furnace lifts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103233087B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878139A (en) * | 2015-05-28 | 2015-09-02 | 中国十七冶集团有限公司 | One-step integral hoisting method for Y-shaped three-way-type downcomer of blast furnace |
| CN111723429A (en) * | 2020-06-29 | 2020-09-29 | 鄂尔多斯市诚泰建设有限公司 | Method for determining lifting point of multi-angle inclined arch rib segment and lifting method |
| CN112064506A (en) * | 2020-08-04 | 2020-12-11 | 中铁上海工程局集团有限公司 | Method for accurately adjusting spatial attitude of steel box arch rib bidirectional inclined closure section |
| CN112481437A (en) * | 2020-11-27 | 2021-03-12 | 上海宝冶冶金工程有限公司 | Blast furnace Y-shaped downcomer dismounting and replacing method |
| CN113213351A (en) * | 2021-04-15 | 2021-08-06 | 北京首钢建设集团有限公司 | Method for quickly installing downcomer of large blast furnace |
| CN114044433A (en) * | 2021-11-19 | 2022-02-15 | 上海宝冶集团有限公司 | Special-shaped pipeline hoisting method for narrow space |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851421A (en) * | 2012-04-18 | 2013-01-02 | 天津二十冶建设有限公司 | Method for installing blast furnace single-tube downcomer |
| CN202670986U (en) * | 2012-07-06 | 2013-01-16 | 中国十七冶集团有限公司 | Safety lifting lug for lifting blast furnace downcomer |
-
2013
- 2013-04-25 CN CN201310147626.0A patent/CN103233087B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851421A (en) * | 2012-04-18 | 2013-01-02 | 天津二十冶建设有限公司 | Method for installing blast furnace single-tube downcomer |
| CN202670986U (en) * | 2012-07-06 | 2013-01-16 | 中国十七冶集团有限公司 | Safety lifting lug for lifting blast furnace downcomer |
Non-Patent Citations (1)
| Title |
|---|
| 王建辉等: "450m3高炉下降管吊装方案的确定", 《安装》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878139A (en) * | 2015-05-28 | 2015-09-02 | 中国十七冶集团有限公司 | One-step integral hoisting method for Y-shaped three-way-type downcomer of blast furnace |
| CN111723429A (en) * | 2020-06-29 | 2020-09-29 | 鄂尔多斯市诚泰建设有限公司 | Method for determining lifting point of multi-angle inclined arch rib segment and lifting method |
| CN112064506A (en) * | 2020-08-04 | 2020-12-11 | 中铁上海工程局集团有限公司 | Method for accurately adjusting spatial attitude of steel box arch rib bidirectional inclined closure section |
| CN112481437A (en) * | 2020-11-27 | 2021-03-12 | 上海宝冶冶金工程有限公司 | Blast furnace Y-shaped downcomer dismounting and replacing method |
| CN112481437B (en) * | 2020-11-27 | 2022-07-08 | 上海宝冶冶金工程有限公司 | Blast furnace Y-shaped downcomer dismounting and replacing method |
| CN113213351A (en) * | 2021-04-15 | 2021-08-06 | 北京首钢建设集团有限公司 | Method for quickly installing downcomer of large blast furnace |
| CN113213351B (en) * | 2021-04-15 | 2022-10-11 | 北京首钢建设集团有限公司 | Method for quickly installing downcomer of large blast furnace |
| CN114044433A (en) * | 2021-11-19 | 2022-02-15 | 上海宝冶集团有限公司 | Special-shaped pipeline hoisting method for narrow space |
| CN114044433B (en) * | 2021-11-19 | 2023-10-27 | 上海宝冶集团有限公司 | Special-shaped pipeline hoisting method for narrow space |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103233087B (en) | 2015-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103233087A (en) | Method for lifting downcomer of blast furnace | |
| CN104261242B (en) | A kind of gallus-type suspender for level lifting | |
| CN209009974U (en) | A kind of self-balancing hanger | |
| JP5548636B2 (en) | Crane suspension | |
| CN105060125B (en) | High tower structure of cable crane and its method for dismounting | |
| CN103818840B (en) | A kind of lifting part and hanging method | |
| CN208532009U (en) | The hanging apparatus of heavy thin-wall long and thin class equipment | |
| US20190352129A1 (en) | Compensation line storing apparatus, jump lift and the usage method thereof | |
| CN208415485U (en) | The aerial steel vestibule Lift-on/Lift-off System of multilayer | |
| CN102381625A (en) | Large-diameter reinforcing steel bar lifting tongs | |
| CN202214131U (en) | Three-point lifting beam | |
| CN105971291B (en) | A kind of hanging method of L-shaped space truss | |
| CN102826464B (en) | Crawler crane mobile counterweight device and crawler crane | |
| CN104030176B (en) | The equalizer bar of hoisting platform truss and hanging method thereof | |
| CN102602794B (en) | Special tool for lifting bushing | |
| CN103612994A (en) | Method and device for hoisting steam pocket in single hoisting point inclination manner | |
| CN103588117A (en) | Internal climbing tower crane | |
| CN207390887U (en) | A kind of hanging apparatus | |
| CN104016220B (en) | The adjustable handling suspension bracket of waste heat boiler module | |
| CN110359674A (en) | A kind of vertical duct well casing pipeline construction method of skyscraper small space | |
| CN204237468U (en) | A kind of arm tower crane | |
| CN204675597U (en) | The lifting auxiliary device of continuous concrete wall steel reinforcement cage | |
| CN107235413A (en) | A kind of component Current Collector Sleave | |
| CN103264953B (en) | Butt-joint adjusting device of steel bar cage | |
| CN207276118U (en) | A kind of level-controlled camber line elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |