CN109653042B - Installation method for replacing guide rail of sector section based on modularization principle - Google Patents
Installation method for replacing guide rail of sector section based on modularization principle Download PDFInfo
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- CN109653042B CN109653042B CN201811490033.3A CN201811490033A CN109653042B CN 109653042 B CN109653042 B CN 109653042B CN 201811490033 A CN201811490033 A CN 201811490033A CN 109653042 B CN109653042 B CN 109653042B
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- sector
- guide rails
- guide rail
- replacement guide
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/005—Making of concrete parts of the track in situ
Abstract
The invention discloses a method for installing a guide rail for replacing a sector section based on a modularization principle, which relates to the technical field of building materials, and comprises the following steps: 1. before the wallboard concrete is cast, the accurate positioning of the embedded part is ensured, and the embedded part and the concrete on the outer side of the wallboard are positioned on the same plane; 2. when the upper parts of the fan-shaped section replacement guide rails are installed, the combination units are reasonably divided, the upper parts of the sections 1 to 8 of the fan-shaped section replacement guide rails and the upper parts of the sections 13 to 14 of the fan-shaped section replacement guide rails are combined into two whole bodies, and the two whole bodies are assembled on the ground to form a whole body for hoisting, so that the problems of safety, precision and efficiency caused by mounting in a slicing mode are avoided; 3. the adjustment of replacing the guide rail is performed by three steps of data adjustment, secondary processing adjustment and installation of the guide plate and simulation operation of the last sector section replacing guide rail calibration device, so that the precision is ensured. The method has the advantages of convenient and quick process principle setting, convenient implementation, guarantee of construction progress and quality, satisfaction of design requirements and strong practicability.
Description
Technical Field
The invention relates to the field of construction methods for building installation, in particular to a method for installing a guide rail for replacing a sector section based on a modularization principle.
Background
In order to realize convenient maintenance of a large slab continuous casting machine, a fan-shaped section replacing device is generally installed on a fan-shaped section of the continuous casting machine, and at present, three fan-shaped section replacing modes are provided, namely, the whole arc-shaped fan-shaped section is installed on a frame and is completely retreated to realize replacement; secondly, an arc-shaped guide rail is arranged beside the sector section, and a replacing trolley is arranged on the guide rail, so that the arc-shaped sector section is transversely moved onto the replacing trolley to realize replacement; and thirdly, replacing the guide rail by adopting the sector section, and lifting the sector section by a special lifting appliance of the sector section along the replacement guide rail so as to realize replacement. The most used mode at present is the third mode, and the mode is divided into two modes, the first mode is a semi-conductor type and is mostly used for a continuous casting machine of an upper-mounted dummy bar, a replacing guide rail is only arranged at the lower half section, the guide rail is in a straight line shape along the radial direction from the center of an arc, the upper end of the guide rail is provided with a replacing crane, the replacing crane is driven by a hoisting device to move along an arc line, the replacing crane is provided with a replacing guide rail capable of moving along with the crane, the replacing guide rail capable of moving along with the vehicle can be in butt joint with the lower half section of any replacing guide rail, so that a sector section directly moves to the replacing crane along the guide rail and is moved out; the second type is full guide rail type, and is used for the conticaster of lower dress formula dummy bar, and the guide rail does not with fan-shaped section direct contact, and the guide rail welding is on pre-buried steel sheet, and when fan-shaped section was changed, directly hung fan-shaped section trunnion along the guide rail by special lifting device door type frame, hangs out along the guide rail again. When the guide rail is replaced and approaches to the center of an arc, the guide rail is arranged in a transition mode from a radial direction to a vertical direction. Most of the prior metallurgy large-scale continuous casting machines adopt a full guide rail type.
At present, because the large slab caster has more fan-shaped sections, each fan-shaped section needs to be replaced by a guide rail to be installed in place, and related patents of a fan-shaped section replacement guide rail installation method based on a modularization principle are not retrieved from the Chinese patent office.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a method for installing a segment replacement guide rail based on a modular principle.
In order to achieve the purpose, the invention adopts the technical scheme that: the installation method of the sector replacement guide rail based on the modularization principle comprises the following steps:
A. construction preparation stage
a1. Embedding embedded parts in concrete wallboards at two sides of a casting flow before pouring, and binding the embedded parts on the reinforcing steel bars of the wallboards when the embedded parts are embedded;
a2. welding an anchoring grab on the embedded part, inserting a combined body of the embedded part and the anchoring grab into the wall plate reinforcing steel bars, and temporarily fixing by spot welding;
a3. a template is arranged on one side of the embedded part close to the wallboard, and the thickness of the wallboard is controlled by the template through a counter-pulling screw rod and a nut;
a4. after the concrete is poured, when the required strength is achieved, the template is dismantled, and the embedded part is retested;
B. assembling stage
b1. Preparing an assembly site, namely, utilizing the existing ladle turret concrete pouring platform to assemble, sequentially measuring and placing the upper assembly contour lines of the sections 1 to 8 of the sector section replacement guide rails and the upper assembly contour lines of the sections 13 to 14 of the sector section replacement guide rails on the ladle turret concrete pouring platform, and sequentially placing the upper assemblies of the sections 1 to 8 of the sector section replacement guide rails and the upper assemblies of the sections 13 to 14 of the sector section replacement guide rails on the contour lines for positioning;
b2. hoisting the upper assembly of the section 1-8 of the sector replacement guide rail and the upper assembly of the section 13-14 of the sector replacement guide rail integrally by using a bridge crane in the plant, slowly and tightly attaching the upper assemblies to the embedded part, and after detection is finished, discontinuously welding the upper assemblies of the section 1-8 of the sector replacement guide rail and the upper assemblies of the section 13-14 of the sector replacement guide rail with the embedded part;
b3. after the upper parts of the segments 1 to 8 and the upper parts of the segments 13 to 14 are installed, respectively installing the lower parts of the segments 1 to 8 and the lower parts of the segments 13 to 14, carrying out hoisting work of replacing the lower sections of the guide rails by a single piece by using a travelling crane, and carrying out intermittent welding after alignment is finished;
C. adjusting phase
c1. Firstly, measuring whether the distances from the casting center line to the bottom of the inner side of the lower section 12 of the sector 1 section replacement guide rail are the same or not by taking the casting center line as a reference, and if the distances are different, adjusting the distance in the process of installing a guide plate;
c2. the guide rail calibration device is replaced by hoisting the fan-shaped section by using the bridge crane in the plant, the fan-shaped section is simulated to run up and down on line, and the standard is that no blockage exists and the running is smooth.
Preferably, the embedded part in the step a3 further includes: and one side of the embedded part, which is far away from the wallboard, is provided with a locking nut and is used for controlling the tightness degree of the embedded part and the template.
Preferably, the retesting of the embedded part in the step a4 further includes: and measuring the verticality and the levelness of the embedded part.
Preferably, two sets of hoisting lugs are welded at the top end of the assembly at the upper parts of the sector replacement guide rails 1 to 8 in the step b2.
Preferably, the thickness of the guide plate in the step c1 is processed according to the difference between the data measured at the last time.
Preferably, the guide plate is fixed on the lower section of the sector 1 section replacement guide rail through welding.
Preferably, in the step b1, the positioning of the upper assemblies of the sections 1 to 8 and 13 to 14 of the sector replacement guide rails further includes connecting and reinforcing the sections by reinforcing ribs after the positioning of the upper assemblies of the sections 1 to 8 and 13 to 14 of the sector replacement guide rails is completed, so as to form a whole.
Preferably, the thickness of the wallboard in the step a3 is 8 cm-15 cm.
The invention has the beneficial effects that:
(1) the process is convenient and quick to set and implement, ensures construction progress and quality, meets design requirements, and has strong practicability.
(2) The reasonable division and combination units are adopted, the modular ground assembly is integrally installed, potential safety hazards caused by high-altitude operation of parts are avoided, the ground assembly precision is accurately controlled, quality is guaranteed, and the fan-shaped section can be accurately positioned by three-time adjustment finally.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic illustration of a segment insert arrangement for a segment replacement guide rail installation method based on the modular principle;
FIG. 2 is a schematic view of the segment embedment of FIG. 1, shown in elevation;
FIG. 3 is a schematic view of the assembly of the upper assembly of the segment 1-8 of the segment replacement guide rail of FIG. 1;
FIG. 4 is a schematic view of the assembly of the upper assembly of the segment 13-14 of the segment replacement guide rail of FIG. 1;
FIG. 5 is a schematic view of the lower mounting of the segment change guide rail of FIG. 1;
FIG. 6 is a schematic view of the lower mounting adjustment of the segment change guide rail of FIG. 1;
figure 7 is a schematic view of the segment change guide rail inspection of figure 1.
The device comprises a wall plate 1, a wall plate 2, an embedded part 3, a template 4, a split screw rod 5, a nut 6, a lock nut 7, an embedded part anchoring claw 8, a wall plate reinforcing steel bar 9, a sector section replacement guide rail 1-8 section upper assembly 10, a reinforcing rib 11, a lifting lug 12, a sector section replacement guide rail 13-14 section upper assembly, a sector section replacement guide rail lower section 13, a sector section replacement guide rail 14, a guide plate 15, a sector section replacement guide rail calibration device 16 and a bridge crane.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 7, a method for installing a segment replacement guide rail based on a modularization principle includes the following steps:
A. construction preparation stage
a1. Before pouring, embedding embedded parts 2 in concrete wallboards 1 at two sides of a casting flow, and binding the embedded parts 2 on wallboards reinforcing steel bars 3 when the embedded parts 2 are embedded;
a2. welding an anchoring claw 7 on the embedded part 2, inserting a combined body of the embedded part 2 and the anchoring claw 7 into a wallboard reinforcing steel bar 8, and temporarily fixing by spot welding;
a3. a template 3 is arranged on one side of the embedded part 2 close to the wallboard 1, and the template 3 is used for controlling the thickness of the wallboard 1 by oppositely pulling a screw rod 4 and a nut 5;
a4. after the concrete is poured, when the required strength is achieved, the template 3 is dismantled, and the embedded part 2 is retested;
B. assembling stage
b1. Preparing an assembly site, assembling the assembly site on an existing ladle turret concrete pouring platform, sequentially measuring and placing the contour lines of the upper assemblies 9 of the sections 1 to 8 of the sector section replacement guide rails and the contour lines of the upper assemblies 12 of the sections 13 to 14 of the sector section replacement guide rails on the ladle turret concrete pouring platform, and sequentially placing the upper assemblies 9 of the sections 1 to 8 of the sector section replacement guide rails and the upper assemblies 12 of the sections 13 to 14 of the sector section replacement guide rails on the contour lines for positioning.
b2. Hoisting the upper assembly 9 of the segment 1-8 of the sector replacement guide rail and the upper assembly 12 of the segment 13-14 of the sector replacement guide rail integrally by using a bridge crane in the plant, slowly clinging to the embedded part 2, and after detection is finished, welding the upper assemblies 12 of the segment 1-8 of the sector replacement guide rail and the segment 13-14 of the sector replacement guide rail and the embedded part 2 discontinuously;
b3. after the upper parts 9 of the segments 1 to 8 and the upper parts 12 of the segments 13 to 14 are installed, the lower parts of the segments 1 to 8 and the lower parts of the segments 13 to 14 are respectively installed, a travelling crane is used for hoisting the lower sections of the single-piece replacement guide rails, and after alignment, intermittent welding is carried out.
C. Adjusting phase
c1. Firstly, measuring whether the distance from the casting center line to the bottom of the inner side of the lower section 12 of the sector 1 section replacement guide rail is the same or not by taking the casting center line as a reference, and if the distance is different, adjusting in the process of installing the guide plate 14;
c2. a bridge crane 17 in a factory building is used for hoisting the fan-shaped section to replace the guide rail calibration device 16, the fan-shaped section is simulated to run up and down on line, the standard is no jamming, and the running is smooth.
The side, far away from the wallboard 1, of the embedded part 2 is provided with a locking nut 6 and is used for controlling the tightness degree of the embedded part 2 and the template 3; the retesting of the embedded part in the step a4 is to measure the verticality and the levelness of the embedded part 2; and b2, welding two sets of hoisting lifting lugs 11 at the top end of the upper assembly of the sector replacement guide rail 1-8. The thickness of the guide plate in the step c1 is processed according to the difference between the data measured at the last time; the guide plate is fixed on the lower section 13 of the replacement guide rail of the sector 1 section by welding; positioning the upper assemblies of the sections 1 to 8 and 13 to 14 of the sector replacement guide rails in the step b1, further comprising connecting and reinforcing the sections by using reinforcing ribs 10 to form a whole after positioning the upper assemblies 12 of the sections 9 and 13 to 14 of the upper assemblies of the sections 1 to 8 of the sector replacement guide rails; the thickness of the wallboard in the step a3 is 8 cm.
The installation process for replacing the guide rail of the sector section comprises the following steps:
1. construction preparation stage
The concrete wall panels 1 on two sides of the casting flow are embedded with embedded parts 2 in advance before pouring, corresponding anchoring claws 7 are welded on the embedded parts 2 after the binding of wall panel reinforcing steel bars 8 is finished when the embedded parts 2 are embedded, and the combination of the embedded parts 2 and the anchoring claws 7 is inserted into the wall panel reinforcing steel bars 8 and is fixed through temporary spot welding. The method comprises the steps of reserving the thickness of a steel bar protection layer on the templates 3 on two sides of the wallboard, then tightly attaching the templates 2, controlling the thickness of the wallboard by using a counter-pull screw rod 4 and a nut 5, and controlling the tightness of the embedded part 2 and the templates 3 by using a locking nut 6 so as to ensure that the embedded part 2 and the outer side of the wallboard 1 are in the same plane after the concrete wallboard 1 is poured. And waiting for concrete pouring, and after the later-stage template 3 is completely dismantled, retesting the embedded part 2.
And (4) preparing an assembly site, and planning to use an existing ladle turret concrete pouring platform for assembly.
2. Ground assembly and hoisting
Sequentially measuring and releasing contour lines of upper assemblies 9 of the sections 1-8 of the sector section replacement guide rails on the concrete pouring platform of the ladle turret, sequentially placing the upper assemblies 9 of the sections 1-8 of the sector section replacement guide rails on the contour lines, and after positioning is finished, connecting and reinforcing the sections by using reinforcing ribs 10 to form a whole.
Two sets of hoisting lifting lugs 11 are welded at the top end of the upper assembly 9 of the segment 1-8 of the sector replacement guide rail so as to facilitate integral hoisting. And hoisting the upper part 9 assembly of the section 1-8 of the guide rail of the sector replacement integrally by using a bridge crane in the plant, slowly attaching the upper part 9 assembly to the embedded part 2, and welding the upper part 9 assembly of the section 1-8 of the guide rail of the sector replacement with the embedded part 2 discontinuously after detection is finished so as to ensure stability.
The assembling and installing mode of the upper assembly 12 of the segments 13 to 14 is the same as the above, and the welding is interrupted after the installation is finished.
After the upper part is installed, the lower parts of the fan-shaped sections 1 are respectively installed, and the hoisting work of replacing the lower sections of the guide rails of the single fan-shaped sections 1 is directly carried out by utilizing a travelling crane; taking the sector 1 section as an example for replacing the lower section 13 of the guide rail, directly hoisting the guide rail to the embedded part 2, and performing intermittent welding after alignment is finished.
3. Adjusting phase
Considering the influence of welding deformation caused by intermittent welding on the central dimension, finally, performing fine adjustment, taking the casting flow central line as a reference, firstly measuring whether the distances from the casting flow central line to the bottom of the inner side of the lower section 13 of the segment replacement guide rail 1 are the same or not, and if the distances are different, adjusting in the process of installing the guide plate 14. The thickness of the guide plate 14 is processed according to the difference between the data measured last and the mounting welding is finally performed, and after the confirmation, the guide plate 14 is welded and the mounting work is finished.
And finally, hoisting the fan-shaped section by using a bridge crane 16 to replace the guide rail calibration device 15, and simulating the fan-shaped section to run up and down on line, wherein the standard is no jamming and the running is smooth.
It is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various insubstantial modifications of the inventive process concepts and solutions, or its application to other applications without modification.
Claims (8)
1. A method for installing a sector replacement guide rail based on a modularization principle is characterized by comprising the following steps of:
A. construction preparation stage
a1. Embedding embedded parts in concrete wallboards at two sides of a casting flow before pouring, and binding the embedded parts on the reinforcing steel bars of the wallboards when the embedded parts are embedded;
a2. welding an anchoring grab on the embedded part, inserting a combined body of the embedded part and the anchoring grab into the wall plate reinforcing steel bars, and temporarily fixing by spot welding;
a3. a template is arranged on one side of the embedded part close to the wallboard, and the thickness of the wallboard is controlled by the template through a counter-pulling screw rod and a nut;
a4. after the concrete is poured, when the required strength is achieved, the template is dismantled, and the embedded part is retested;
B. assembling stage
b1. Preparing an assembly site, namely, utilizing the existing ladle turret concrete pouring platform to assemble, sequentially measuring and placing the upper assembly contour lines of the sections 1 to 8 of the sector section replacement guide rails and the upper assembly contour lines of the sections 13 to 14 of the sector section replacement guide rails on the ladle turret concrete pouring platform, and sequentially placing the upper assemblies of the sections 1 to 8 of the sector section replacement guide rails and the upper assemblies of the sections 13 to 14 of the sector section replacement guide rails on the contour lines for positioning;
b2. hoisting the upper assemblies of the sections 1 to 8 of the sector replacement guide rails and the upper assemblies of the sections 13 to 14 of the sector replacement guide rails integrally by using a bridge crane in the plant, slowly and tightly attaching the upper assemblies to the embedded part, and after detection is finished, discontinuously welding the upper assemblies of the sections 1 to 8 of the sector replacement guide rails and the upper assemblies of the sections 13 to 14 of the sector replacement guide rails with the embedded part;
b3. after the upper parts of the segments 1 to 8 and the upper parts of the segments 13 to 14 are installed, respectively installing the lower parts of the segments 1 to 8 and the lower parts of the segments 13 to 14, carrying out hoisting work of replacing the lower sections of the guide rails by a single piece by using a travelling crane, and carrying out intermittent welding after alignment is finished;
C. adjusting phase
c1. Firstly, measuring whether the distances from the casting center line to the bottom of the inner side of the lower section 12 of the sector 1 section replacement guide rail are the same or not by taking the casting center line as a reference, and if the distances are different, adjusting the distance in the process of installing a guide plate;
c2. the guide rail calibration device is replaced by hoisting the fan-shaped section by using the bridge crane in the plant, the fan-shaped section is simulated to run up and down on line, and the standard is that no blockage exists and the running is smooth.
2. The installation method of sector replacement guide rails based on modularization principle as claimed in claim 1, wherein the embedded part in step a3 further comprises: and one side of the embedded part, which is far away from the wallboard, is provided with a locking nut and is used for controlling the tightness degree of the embedded part and the template.
3. The installation method of sector replacement guide rails based on the modularization principle of claim 1, wherein the embedded part in the step a4 is retested, further comprising: and measuring the verticality and the levelness of the embedded part.
4. The installation method of the sector replacement guide rail based on the modularization principle of claim 1, wherein two sets of lifting lugs are welded on the top end of the upper assembly of the 1-8 sections of the sector replacement guide rail in the step b2.
5. The method for installing a guide rail for segment replacement based on modular principle as claimed in claim 1, wherein the thickness of the guide plate in step c1 is processed according to the difference between the data measured last time.
6. The installation method of sector replacement guide rails based on the modularization principle of claim 5, wherein the guide plate is fixed to the lower section of sector 1 replacement guide rail by welding.
7. The installation method of sector replacement guide rails based on the modularization principle as claimed in claim 1, wherein the positioning of the upper assembly of the sector replacement guide rails 1-8 and 13-14 in step b1 further comprises connecting and reinforcing the upper assemblies of the sector replacement guide rails 1-8 and 13-14 by reinforcing ribs to form a whole.
8. The installation method of sector exchange guide rails based on the modularization principle of claim 1, wherein the thickness of the wallboard in the step a3 is 8 cm-15 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811490033.3A CN109653042B (en) | 2018-12-06 | 2018-12-06 | Installation method for replacing guide rail of sector section based on modularization principle |
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| CN201811490033.3A CN109653042B (en) | 2018-12-06 | 2018-12-06 | Installation method for replacing guide rail of sector section based on modularization principle |
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| CN110102727B (en) * | 2019-05-27 | 2021-06-29 | 中国一冶集团有限公司 | Installation method for replacing guide rail of fan-shaped section of continuous casting machine |
| CN111974960A (en) * | 2020-06-30 | 2020-11-24 | 中国二十冶集团有限公司 | Integral installation method for replacing guide rail of segmented fan-shaped section of continuous casting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT1302808B1 (en) * | 1998-12-01 | 2000-09-29 | Danieli & C Ohg Sp | CONTINUOUS CASTING LINE |
| CN102451896B (en) * | 2010-10-18 | 2016-03-30 | 五冶集团上海有限公司 | Method for installing fan-shaped sections of slab continuous casting |
| CN103406528B (en) * | 2013-08-26 | 2015-09-16 | 中国二十二冶集团有限公司 | Slab caster bale panoramic tables modularization construction method of installation |
| DE102014012078A1 (en) * | 2014-08-13 | 2016-02-18 | Oleksandr Mislavskyy | The process of liquid metal feed into the continuous casting plant and the distributor for realization of the process. |
| CN204122714U (en) * | 2014-08-14 | 2015-01-28 | 中国重型机械研究院股份公司 | A kind of slab fan-shaped section and slab fan-shaped section change system |
| CN107285230B (en) * | 2017-08-10 | 2019-10-25 | 中国十七冶集团有限公司 | The installation method of RH refining furnace hydraulic lifting guide rail |
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Denomination of invention: Installation method of segment replacement guide rail based on modularization principle Effective date of registration: 20210519 Granted publication date: 20200724 Pledgee: Industrial and Commercial Bank of China Limited MAANSHAN Tuanjie square sub branch Pledgor: CHINA MCC17 GROUP Co.,Ltd. Registration number: Y2021980003566 |
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Date of cancellation: 20230810 Granted publication date: 20200724 Pledgee: Industrial and Commercial Bank of China Limited MAANSHAN Tuanjie square sub branch Pledgor: CHINA MCC17 GROUP Co.,Ltd. Registration number: Y2021980003566 |
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