CN102851421A - Method for installing blast furnace single-tube downcomer - Google Patents
Method for installing blast furnace single-tube downcomer Download PDFInfo
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- CN102851421A CN102851421A CN2012101150026A CN201210115002A CN102851421A CN 102851421 A CN102851421 A CN 102851421A CN 2012101150026 A CN2012101150026 A CN 2012101150026A CN 201210115002 A CN201210115002 A CN 201210115002A CN 102851421 A CN102851421 A CN 102851421A
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Abstract
The invention discloses a method for installing a blast furnace single-tube downcomer, characterized by using single machine and double shackles to lift each lifting unit. The method comprises the following steps: 1, conducting lifting preparation: 1) dividing lifting units; 2) determining the barycenter of each lifting unit; 3) determining the lifting point and shackle position of each lifting unit and completing the welding of the shackles; 4) determining the position lines of a riser tube and an upper shaking head, and determining the position lines of a gravity deduster shell and a lower T-joint; and 5) building a joint temporary operation platform the inner side and the outer side of the joint of each lifting unit; and 2, conducting lifting operation. According to the invention, by using single machine to lift, the amount of large-scale machines is reduced, the limitation of narrow and small construction place can be overcome, the construction cost and energy consumption can be reduced, the construction safety is raised, the target of realizing safety, high quality, high efficiency, energy saving, and low carbon is realized, and the situation of high energy consumption, high cost and high pollution existing in traditional double-machine lifting is thoroughly changed.
Description
Technical field
The present invention relates to a kind of installation method of large-sized structural parts, particularly relate to a kind of installation method of blast furnace single tube downtake.
Background technology
Flourish along with China's metallurgy industry in recent years, the scale of blast furnace ironmaking constantly increases, and the volume of blast furnace constantly enlarges.Simultaneously, country more and more payes attention to " low-carbon (LC), environmental protection, energy-conservation " theory, as unit in charge of construction, should conscientiously implement country's " low-carbon (LC), environmental protection, energy-conservation " policy when reducing cost, enhancing competitiveness.Downtake is the contact tie between blast-furnace body and the gravitational precipitator, it is last hook that the blast furnace crude gas system structure is installed, it also is the hook that single hook block dress weight was the heaviest during the blast furnace crude gas system structure was installed, member length is the longest, being an emphasis of blast furnace project installation, also is a difficult point.
Adopt double-machine lifting crane during the lifting of tradition blast furnace single tube downtake, by two hoisting machineries, under the commander who plays heavy industry, lift, yet the mode of this double-machine lifting crane is need to the side of coordination during lifting many, is difficult for assuming unified command of, and easily causes danger; Need construction machinery many, cost is higher; Occupied ground is large, meets narrow and small place and can't construct; Big machinery uses more, does not meet the theory requirement of " low-carbon (LC), the environmental protection, energy-conservation " of country's promotion.
Summary of the invention
The present invention provides a kind of installation method of blast furnace single tube downtake for solving the technical problem that exists in the known technology, this installation method adopts a lifting machine can finish the installation of blast furnace single tube downtake.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of installation method of blast furnace single tube downtake, the method adopt the unit double shackle to lift each lifting elements, and the method may further comprise the steps: one, lifting is prepared; One) divides lifting elements: the single tube downtake is divided into gets rid of head, interlude and three lifting elements of lower threeway, on get rid of head and comprise straight length, lower elbow and bleeder, interlude comprises straight length, and lower threeway comprises downtake hypomere and gravitational precipitator top straight tube; Two) get rid of center of gravity G1, the center of gravity G2 of interlude of head and the center of gravity G3 of lower threeway on determining; Three) determine suspension centre and the hanger position of each lifting elements and finish the welding of hanger; 1) get rid of the suspension centre C1 of head on determining, after the lifting, suspension centre C1 should with on get rid of head center of gravity G1 be positioned on the same plummet, and be positioned at the center of gravity G1 that gets rid of head directly over; Getting rid of head welding two hangers, on get rid of upper two hangers of head the position should satisfy: on get rid of the head lifting after, straight length maintenance level; 2) determine the suspension centre C2 of interlude, after the lifting, suspension centre C2 should be positioned at the center of gravity G2 of interlude on the same plummet, and be positioned at interlude center of gravity G2 directly over; At interlude welding two hangers, the position of two hangers should be satisfied on the interlude: the angle of straight length and horizontal plane is identical with the mounting design angle γ of straight length; 3) the suspension centre C3 of definite lower threeway, after the lifting, suspension centre C3 should be positioned at the center of gravity G3 of lower threeway on the same plummet, and be positioned at lower threeway center of gravity G3 directly over, at lower threeway welding two hangers, the position of two hangers should be satisfied in the lower threeway: after the lower threeway lifting, gravitational precipitator top straight tube keeps vertical; Four) determine upcast and on get rid of head position line, and respectively at upcast with get rid of head and mark corresponding docking mark line; Getting rid of the lower elbow welding bottom band of head; Determine the position line of gravitational precipitator housing and lower threeway, and mark corresponding docking mark line at gravitational precipitator housing and lower threeway respectively; At welding bottom, the upper end of the downtake hypomere of lower threeway band; Five) the interface temporary operating platform is set up in both sides inside and outside each lifting elements interface; Two, lifting operation; One) adopts unit double shackle method to lift and get rid of head, after lifting puts in place, get rid of head in the rotation, its medullary ray around straight length is rotated, until upcast and on get rid of docking mark line alignment on the head, get rid of head on temporary fixed, then finish upcast and on get rid of butt welding between the head; Two) adopt the lower threeway of unit double shackle method lifting, after lifting puts in place, the lower threeway of rotation, its medullary ray around gravitational precipitator top straight tube is rotated, until the alignment of the docking mark line in gravitational precipitator housing and the lower threeway, then temporary fixed lower threeway finishes the welding between lower threeway and the gravitational precipitator housing; Three) adopt unit double shackle method lifting interlude, after lifting puts in place, keep the angle of straight length and horizontal plane constant, adjust the position of interlude, its upper end is dropped on the bottom band that gets rid of head in consistent manner, and the lower end is dropped on the bottom band of lower threeway, then in consistent manner, the upper end of interlude adopt band with on get rid of the head welding, the lower end of interlude adopts band and lower threeway to weld.
Two hangers on the described interlude lay respectively at the both sides of interlude medullary ray.
The position of each described lifting elements corresponding hanger in pipeline and both ends are provided with meter word and support.
Both sides at described hanger are provided with gusset.
Advantage and positively effect that the present invention has are:
1) by adopting the method for unit double shackle hoisting large-size member, improved the construction technology that blast furnace single tube downtake is installed, improved speed of application and quality;
2) by the classifying rationally lifting elements, assembled component has on the ground made things convenient for the control to structure assembly unit and welding quality most possibly, has guaranteed installation quality;
3) reduce personnel's machinery and dropped into, reduced construction cost;
4) minimizing of big machinery quantity has realized the theory of " low-carbon (LC), environmental protection, energy-conservation ";
5) reduce requirement to the workyard, solved the problem that narrow field can't be constructed;
Need each other the object coordinated when 6) having reduced lifting, improved security.
In sum, the present invention uses basic mechanical and space geometry principle, take full advantage of the weight-lifting ability of hanging device, adopt single crane hoisting, reduced the quantity of big machinery, not only can overcome the constraint of narrow and small workyard, all right reducing construction cost and energy consumption, improve working security, realized the target of " safe, high-quality, efficient, energy-conservation, low-carbon (LC) ", thoroughly changed the circumstances of traditional double-machine lifting crane highly energy-consuming, expensive, high pollution.
Description of drawings
Fig. 1 is the structural representation that the present invention divides the downtake lifting elements;
Fig. 2 is the structural representation that rice word that the present invention uses supports;
Fig. 3 a is the structural representation of the hanger that uses of the present invention;
Fig. 3 b is the side-view of Fig. 3 a;
Fig. 4 is the schematic diagram that the present invention lifts each lifting elements of downtake;
Fig. 5 a is the schematic diagram that gets rid of a downward bent angle in the present invention;
Fig. 5 b gets rid of head to the schematic diagram at gravitational dust collection lateral bending angle in the present invention;
Fig. 6 a is the schematic diagram of threeway downtake hypomere and gravitational precipitator top straight tube angle under the present invention;
Fig. 6 b is the intention at threeway downtake hypomere and 0 ° of wire clamp angle of gravitational precipitator under the present invention;
Fig. 7 a is the schematic diagram of two adjacent lifting elements mating interface place bands of the present invention;
Fig. 7 b is the side-view of Fig. 7 a.
Among the figure: get rid of head 1,, 11, straight length, 12, lower elbow, 13, bleeder, 14, band, 2, interlude, 21, upper elbow, 22, straight length, 3, lower threeway, 31, downtake hypomere, 32, gravitational precipitator top straight tube, 33, band, 4, upcast, 5, hanger, 6, gusset, 7, gravitational precipitator housing, 8, the rice word supports.
Embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
A kind of installation method of blast furnace single tube downtake may further comprise the steps:
One, lifting is prepared
One) divides lifting elements: according to downtake production unit dividing condition and on-site consolidation place situation, in conjunction with the transportcapacity of vehicle and the lifting performance of lifting machine, determine lifting elements quantity and each lifting elements package size, in the present embodiment, the single tube downtake is divided into three large lifting elements, on get rid of 1, interlude 2 and lower threeway 3, see also Fig. 1 and Fig. 4, on get rid of 1 and comprise straight length 11, lower elbow 12 and bleeder 13, interlude 2 comprises straight length 22, the upper end of straight length 22 can arrange elbow 21, and whether upper elbow 21 arranges and should decide on project situation.
Two) get rid of center of gravity G1, a center of gravity G2 of interlude 2 of 1 and the center of gravity G3 of lower threeway 3 on determining
According to center of gravity solution formula G
Always* X=G
1* X
1+ G
2* X
2+ ... + G
n* X
nCan solve the position of the geometric center of gravity of lifting elements, wherein G
AlwaysThe gross weight of lifting elements, G
1, G
2G
nBe the weight of the regular geometric body that marks off of lifting elements, X is the distance of lifting elements center of gravity end a certain with it, X
1, X
2X
nIt is the distance of a certain end in center of gravity unit of living in it of the regular geometric body that marks off of lifting elements.X, X
1, X
2X
nShould be the distance of the same end of relative lifting elements.
Three) determine suspension centre and the hanger position of each lifting elements and finish the welding of hanger, see also Fig. 4.
1) get rid of a suspension centre C1 of 1 on determining, after the lifting, suspension centre C1 should with on get rid of a center of gravity G1 of 1 and be positioned on the same plummet, and be positioned at get rid of a center of gravity G1 of 1 directly over; Getting rid of 1 welding two hangers, on get rid of two hangers on 1 position A1 and A2 should satisfy: on get rid of 1 lifting after, straight length 11 maintenance levels.
2) determine the suspension centre C2 of interlude 2, after the lifting, suspension centre C2 should be positioned at the center of gravity G2 of interlude 2 on the same plummet, and be positioned at interlude 2 center of gravity G2 directly over; At interlude 2 welding two hangers, the position A1 of two hangers should satisfy with A2 on the interlude 2: the angle of straight length 22 and horizontal plane is identical with the mounting design angle γ of straight length 22.
3) the suspension centre C3 of definite lower threeway 3, after the lifting, suspension centre C3 should be positioned at the center of gravity G3 of lower threeway 3 on the same plummet, and be positioned at lower threeway 3 center of gravity G3 directly over, at lower threeway 3 welding two hangers, the position A1 of two hangers and A2 should satisfy in the lower threeway 3: after lower threeway 3 liftings, gravitational precipitator top straight tube 32 keeps vertical.
On get rid of 1, the hanger form of interlude 2 and lower threeway 3, see also Fig. 3 a and Fig. 3 b, be the moment bending moment that produces in the opposing hoisting process, in the both sides of hanger 5 gusset 6 is set, this gusset 6 also can increase the contact area of hanger 5 and pipe, increase welding bead length, increase the stress point of component surface, reduce the surface of downtake in the hoisting process and concentrate the phenomenon that mother metal is torn because of unfair stress.Hanger thickness t 1, gusset thickness t 2, length L, arc radius R, r can calculate according to each lifting elements weight and try to achieve.
For preventing that the lifting elements lifting from the time deforming, the position of corresponding hanger and pipe ends add steel pipe or angle steel rice word support 8 in pipeline, see also Fig. 2, wherein the rice word of interlude 2 and downtake hypomere 31 upper ends supports the temporary operating platform that can be used as the aerial internal orifice docking of downtake welding.
Four) determine upcast 4 and on get rid of a position line of 1, and respectively at upcast 4 with get rid of 1 and mark corresponding docking mark line; At lower elbow 12 welding bottom bands 14 that get rid of 1; Determine the position line of gravitational precipitator housing 7 and lower threeway 3, and mark corresponding docking mark line at gravitational precipitator housing 7 and lower threeway 3 respectively; At welding bottom, the upper end of the downtake hypomere 31 of lower threeway 3 band 33.
See also Fig. 5 a and Fig. 5 b, on get rid of 1 elbow and be bent downwardly, have angle θ, to the gravitational dust collection lateral bend, have angle ψ since on to get rid of an angle that 1 elbow curves be Space Angle, can't measure, angle θ, ψ must be converted to and get rid of the arc length MN that head needs rotation.According to the space analysis geometrical principle, calculate and get rid of 1 an arc length MN who needs rotation, determine upcast 4 and on get rid of a position line of 1, and respectively at upcast 4 with get rid of 1 and mark corresponding docking mark line.
In like manner, see also Fig. 6 a, there is angle ε in the medullary ray of the medullary ray of downtake hypomere 31 and gravitational precipitator top straight tube 32, get arbitrfary point H at downtake hypomere 31, do vertical line by the H point to gravitational precipitator top straight tube 32, the one side acquisition intersection point K of order near H on the excircle of gravitational precipitator top straight tube 32, angle ε can embody by the distance between 2 of H and the K.
See also Fig. 6 b, there is angle ζ in downtake hypomere 31 medullary rays projection and 0 ° of line of gravitational dust collection on horizontal plane, calculated the arc length XY of gravitational precipitator housing 7 tops and the corresponding ζ in straight tube 32 joints, gravitational precipitator top by angle ζ, determine the position line of gravitational precipitator housing 7 and lower threeway 3, and mark corresponding docking mark line at gravitational precipitator housing 7 and lower threeway 3 respectively.
Above-mentioned upcast 4 and on get rid of a position line of 1 and the position line of gravitational precipitator housing 7 and lower threeway 3 all can obtain by setting-out.
Five) the interface temporary operating platform is set up in both sides inside and outside each lifting elements interface.
Two, lifting operation
One) adopt and to get rid of 1 in the lifting of unit double shackle method, after lifting puts in place, get rid of 1 in the rotation, its medullary ray around straight length 11 is rotated, until upcast 4 and on get rid of a docking mark line alignment on 1, this moment, bleeder 13 was in the vertical state.When on get rid of 1 location positioning after, adopt affixed lacing wire and crossbeam on peripheral existing structure, adopt lacing wire and jack on get rid of 1 carry out temporary fixed, then finish upcast 4 and on get rid of a butt welding between 1.
Two) adopt the lower threeway 3 of unit double shackle method lifting, after lifting puts in place, the lower threeway 3 of rotation, its medullary ray around gravitational precipitator top straight tube 32 is rotated, until the alignment of the docking mark line in gravitational precipitator housing 7 and the lower threeway 3, then with jack, wireline etc. lower threeway 3 is temporarily fixed on the peripheral existing structure, then finishes the welding between shell of dust remover 7 and the gravitational precipitator top straight tube 32.
Three) get rid of 1 and lower threeway 3 fixing after, before interlude 2 assembly units, distance with lower nozzle on the total station survey, after repeatedly examining, adopt unit double shackle method lifting interlude 2, after lifting puts in place, keep straight length 22 constant with the angle of horizontal plane, adjust the position of interlude 2, there is angle ζ to satisfy downtake hypomere 31 medullary rays projection and 0 ° of line of gravitational dust collection on horizontal plane, can carries out coarse adjustment by the method for slipping rope rotation eave tile and pull member, treat that the member two ends drop on the band gently, with jack accurate adjustment angle ζ, auxiliary in place with crowbar, interlude 2 upper ends are dropped in consistent manner get rid of on 1 the bottom band 14, the lower end is dropped on the bottom band 33 of lower threeway 3 in consistent manner, then the upper end of interlude 2 adopt band with on get rid of 1 welding, the lower end of interlude 2 adopts band and lower threeway 3 to weld.
Be convenient to control Space Angle in order to lift, interlude 2 adopts the lifting of unit double shackles, and two hangers lay respectively at the both sides of interlude 2 medullary rays.
Each lifting elements of downtake is sequentially installed counterpart according to lifting, and the interface band sees also Fig. 7, get rid of 1 on guaranteeing, interlude 2 and lower threeway 3 locus are accurate, interface firm and meet code requirement after can decoupling device.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (4)
1. the installation method of a blast furnace single tube downtake is characterized in that, the method adopts the unit double shackle to lift each lifting elements, and the method may further comprise the steps:
One, lifting is prepared
One) divides lifting elements: the single tube downtake is divided into gets rid of head, interlude and three lifting elements of lower threeway, on get rid of head and comprise straight length, lower elbow and bleeder, interlude comprises straight length, and lower threeway comprises downtake hypomere and gravitational precipitator top straight tube;
Two) get rid of center of gravity G1, the center of gravity G2 of interlude of head and the center of gravity G3 of lower threeway on determining;
Three) determine suspension centre and the hanger position of each lifting elements and finish the welding of hanger
1) get rid of the suspension centre C1 of head on determining, after the lifting, suspension centre C1 should with on get rid of head center of gravity G1 be positioned on the same plummet, and be positioned at the center of gravity G1 that gets rid of head directly over; Getting rid of head welding two hangers, on get rid of upper two hangers of head the position should satisfy: on get rid of the head lifting after, straight length maintenance level;
2) determine the suspension centre C2 of interlude, after the lifting, suspension centre C2 should be positioned at the center of gravity G2 of interlude on the same plummet, and be positioned at interlude center of gravity G2 directly over; At interlude welding two hangers, the position of two hangers should be satisfied on the interlude: the angle of straight length and horizontal plane is identical with the mounting design angle γ of straight length;
3) the suspension centre C3 of definite lower threeway, after the lifting, suspension centre C3 should be positioned at the center of gravity G3 of lower threeway on the same plummet, and be positioned at lower threeway center of gravity G3 directly over, at lower threeway welding two hangers, the position of two hangers should be satisfied in the lower threeway: after the lower threeway lifting, gravitational precipitator top straight tube keeps vertical;
Four) determine upcast and on get rid of head position line, and respectively at upcast with get rid of head and mark corresponding docking mark line; Getting rid of the lower elbow welding bottom band of head; Determine the position line of gravitational precipitator housing and lower threeway, and mark corresponding docking mark line at gravitational precipitator housing and lower threeway respectively; At welding bottom, the upper end of the downtake hypomere of lower threeway band;
Five) the interface temporary operating platform is set up in both sides inside and outside each lifting elements interface;
Two, lifting operation
One) adopts unit double shackle method to lift and get rid of head, after lifting puts in place, get rid of head in the rotation, its medullary ray around straight length is rotated, until upcast and on get rid of docking mark line alignment on the head, get rid of head on temporary fixed, then finish upcast and on get rid of butt welding between the head;
Two) adopt the lower threeway of unit double shackle method lifting, after lifting puts in place, the lower threeway of rotation, its medullary ray around gravitational precipitator top straight tube is rotated, until the alignment of the docking mark line in gravitational precipitator housing and the lower threeway, then temporary fixed lower threeway finishes the welding between lower threeway and the gravitational precipitator housing;
Three) adopt unit double shackle method lifting interlude, after lifting puts in place, keep the angle of straight length and horizontal plane constant, adjust the position of interlude, its upper end is dropped on the bottom band that gets rid of head in consistent manner, and the lower end is dropped on the bottom band of lower threeway, then in consistent manner, the upper end of interlude adopt band with on get rid of the head welding, the lower end of interlude adopts band and lower threeway to weld.
2. the installation method of blast furnace single tube downtake according to claim 1 is characterized in that, two hangers on the described interlude lay respectively at the both sides of interlude medullary ray.
3. the installation method of blast furnace single tube downtake according to claim 1 is characterized in that, the position of each described lifting elements corresponding hanger in pipeline and both ends are provided with meter word and support.
4. the installation method of blast furnace single tube downtake according to claim 1 is characterized in that, is provided with gusset in the both sides of described hanger.
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| CN103173582A (en) * | 2013-03-15 | 2013-06-26 | 中国十七冶集团有限公司 | Method for integral in-position mounting of blast-furnace five-way ball and eduction tubes thereof aloft |
| CN103233087A (en) * | 2013-04-25 | 2013-08-07 | 攀钢集团工程技术有限公司 | Method for lifting downcomer of blast furnace |
| CN103333973A (en) * | 2013-06-25 | 2013-10-02 | 北京首钢建设集团有限公司 | Preferential locating installation method of blast furnace five-way ball |
| CN103451338A (en) * | 2013-09-13 | 2013-12-18 | 中国十九冶集团有限公司 | Ascending pipe and five-way ball mounting method for blast furnace gas system |
| CN103484584A (en) * | 2013-09-13 | 2014-01-01 | 中国十九冶集团有限公司 | Method for installing down pipe of blast furnace gas system |
| CN104531931A (en) * | 2015-01-19 | 2015-04-22 | 中国十九冶集团有限公司 | Method for installing dust removal pipeline at lower part of blast furnace casting house |
| 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 |
| CN107487396A (en) * | 2016-09-22 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Instrument board alignment schemes and instrument method of plate installation |
| CN108848932A (en) * | 2018-07-11 | 2018-11-23 | 王利平 | Spindle nose shaking type picking machine |
| CN109402313A (en) * | 2018-10-31 | 2019-03-01 | 中国冶集团有限公司 | A kind of blast furnace down-comer is laid bricks inner lining material transportation system and construction method |
| 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 |
| 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 |
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| CN103173582A (en) * | 2013-03-15 | 2013-06-26 | 中国十七冶集团有限公司 | Method for integral in-position mounting of blast-furnace five-way ball and eduction tubes thereof aloft |
| CN103233087B (en) * | 2013-04-25 | 2015-09-16 | 攀钢集团工程技术有限公司 | For the method that the downtake of blast furnace lifts |
| CN103233087A (en) * | 2013-04-25 | 2013-08-07 | 攀钢集团工程技术有限公司 | Method for lifting downcomer of blast furnace |
| CN103333973A (en) * | 2013-06-25 | 2013-10-02 | 北京首钢建设集团有限公司 | Preferential locating installation method of blast furnace five-way ball |
| CN103333973B (en) * | 2013-06-25 | 2015-01-14 | 北京首钢建设集团有限公司 | Preferential locating installation method of blast furnace five-way ball |
| CN103451338A (en) * | 2013-09-13 | 2013-12-18 | 中国十九冶集团有限公司 | Ascending pipe and five-way ball mounting method for blast furnace gas system |
| CN103484584A (en) * | 2013-09-13 | 2014-01-01 | 中国十九冶集团有限公司 | Method for installing down pipe of blast furnace gas system |
| CN103451338B (en) * | 2013-09-13 | 2015-05-20 | 中国十九冶集团有限公司 | Ascending pipe and five-way ball mounting method for blast furnace gas system |
| CN103484584B (en) * | 2013-09-13 | 2015-09-09 | 中国十九冶集团有限公司 | Method for installing down pipe of blast furnace gas system |
| CN104531931A (en) * | 2015-01-19 | 2015-04-22 | 中国十九冶集团有限公司 | Method for installing dust removal pipeline at lower part of blast furnace casting house |
| 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 |
| CN107487396A (en) * | 2016-09-22 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Instrument board alignment schemes and instrument method of plate installation |
| CN107487396B (en) * | 2016-09-22 | 2020-02-14 | 宝沃汽车（中国）有限公司 | Instrument panel alignment method and instrument panel mounting method |
| CN108848932A (en) * | 2018-07-11 | 2018-11-23 | 王利平 | Spindle nose shaking type picking machine |
| CN109402313A (en) * | 2018-10-31 | 2019-03-01 | 中国冶集团有限公司 | A kind of blast furnace down-comer is laid bricks inner lining material transportation system and construction method |
| 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 |
| 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 |
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Application publication date: 20130102 |