CN107900300B - Sector section roll gap adjusting device of slab continuous casting machine - Google Patents
Sector section roll gap adjusting device of slab continuous casting machine Download PDFInfo
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- CN107900300B CN107900300B CN201711244580.9A CN201711244580A CN107900300B CN 107900300 B CN107900300 B CN 107900300B CN 201711244580 A CN201711244580 A CN 201711244580A CN 107900300 B CN107900300 B CN 107900300B
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- arc frame
- fixed
- roll gap
- pad group
- spherical surface
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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
- B22D11/16—Controlling or regulating processes or operations
-
- 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
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to the technical field of billet continuous casting in the ferrous metallurgy industry, in particular to a sector section roll gap adjusting device of a slab continuous casting machine. The roll gap adjusting device comprises a clamping hydraulic cylinder, a pull rod, an inner arc frame and an outer arc frame, wherein the clamping hydraulic cylinder is provided with a built-in displacement sensor, a fork joint is hinged with a joint bearing at the upper part of the pull rod through a pin shaft, and the bottom of the pull rod is connected with an upper spherical pad group, a lower spherical pad group, a base plate and a locking nut group in series; the upper spherical surface pad group and the lower spherical surface pad group are fixed by adopting an upper concentric spherical surface pad group and a lower concentric spherical surface pad group, a guide post is fixed on an outer arc frame, a guide post anti-rotation stop block is welded on the outer arc frame, the guide post is tightly clung to the guide post, a movable slide plate and a movable slide plate pad group are fixed on a cylinder flange of the inner arc frame, and the movable slide plate and a fixed long slide plate fixed on the guide post form a slide plate guide structure. The invention is easy to realize the overturning of the inner arc frame in the online outer maintenance area and is convenient for maintenance.
Description
Technical Field
The invention relates to the technical field of billet continuous casting in the ferrous metallurgy industry, in particular to a sector section roll gap adjusting device of a slab continuous casting machine.
Background
At present, a slab continuous casting machine mostly adopts a straight arc type, the design of a casting flow guiding system of the slab continuous casting machine generally adopts a roller array arrangement mode of small-roller-diameter close-packed rollers, a casting blank is clamped by inner and outer arc rollers, and the opening degree of the inner and outer arc rollers, namely, the roller gap, is generally designed to be a shrinkage roller gap along the casting flow direction. The slab caster soft reduction technology is developed on the basis of a shrinkage roll gap technology, the static soft reduction is a casting method in which a roll gap is preset before casting, the roll gap is set according to solidification shrinkage characteristics of steel, the roll gap has a certain taper, and then casting is performed according to a set drawing speed and process conditions, and the dynamic soft reduction is a casting method in which the roll gap and the roll gap shrinkage degree are adjusted along with the position change of a solidification end point in the casting process.
The roll gap of the segment of the slab caster which can be dynamically and lightly pressed can be remotely adjusted, and almost all the segment which can be dynamically and lightly pressed is hydraulically clamped. The hydraulic clamping type remote roll gap adjusting fan-shaped section is key equipment for realizing dynamic soft reduction technology, and can quickly and remotely adjust the roll gap and the shrinkage degree of the roll gap in a main operation chamber of a continuous casting machine, so that the operation rate of the continuous casting machine is improved.
Because of the need of bearing larger hydrostatic pressure and larger deformation resistance of casting blank under light pressure, the sector section roll gap adjusting device of the slab caster is often larger in design strength, the cylinder diameter of the hydraulic cylinder is correspondingly larger, the key pull rod or pull plate for connecting the inner arc frame and the outer arc frame is thick in appearance, the fixed pin or the nut at the end part of the device is required to bear the load equal to the hydraulic cylinder, and the diameter or the thread specification of the fixed pin or the nut is much larger than that of a conventional pin and thread, so that the whole roll gap adjusting device is very inconvenient in disassembly and assembly. In addition, the slab sector roller wears fast in the high temperature environment, even if the water-cooled roller design is adopted and stainless steel is deposited on the roller surface, the service life of the slab sector roller is not long, the inner and outer arc rollers of the sector are required to be overhauled and re-arched, the inner and outer arc frames of the sector are required to be opened frequently, and the roller gap adjusting device is required to be disassembled and assembled for separating and combining the inner and outer arc frames, so that the easy disassembly and assembly of the roller gap adjusting device is a key for influencing the maintenance workload of the sector.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a roll gap adjusting device which is convenient to assemble and disassemble and has the function of remotely adjusting the roll gap on line. The separation position of the inner arc frame and the outer arc frame of the fan-shaped section is at the upper part of the pull rod, the inner arc frame is separated with the hydraulic cylinder and the fork joint, the lower part of the inner arc frame does not need to suspend a longer swaying pull rod, the lifting and the storage are convenient, the overturning of the inner arc frame is easy to realize in an on-line outer maintenance area, and the maintenance is convenient. When the inner arc frame and the outer arc frame of the sector section are combined, the pin shaft is only needed to be reinserted into the fork-shaped joint and the pull rod which are at the well aligned positions, and the combination operation can be completed. The pin shaft can be removed by utilizing an outward pin shaft center screw hole, and the pulling operation is performed after the pressure of the hydraulic cylinder is relieved, so that the fork joint is separated from the pull rod.
The technical scheme of the invention is as follows: the utility model provides a slab caster fan-shaped section roll gap adjusting device, includes four sets of roll gap adjusting device, is right side entrance side roll gap adjusting device, right side export side roll gap adjusting device, left side entrance side roll gap adjusting device, left side export side roll gap adjusting device respectively, and four sets of roll gap adjusting device's structural style is the same, its characterized in that: each group of roll gap adjusting device comprises a clamping hydraulic cylinder, a pull rod, an inner arc frame and an outer arc frame, wherein the clamping hydraulic cylinder is provided with a built-in displacement sensor, the clamping hydraulic cylinder is fixed on the inner arc frame, a piston rod of the clamping hydraulic cylinder is in threaded connection with a fork joint, the fork joint is hinged with a joint bearing at the upper part of the pull rod through a pin shaft, a pin shaft end baffle plate of a pin shaft end baffle plate bolt is fixed on the fork joint clamps the outward end part of the pin shaft, the bottom of the pull rod is connected with an upper spherical surface pad group, a lower spherical surface pad group, a base plate and a locking nut group in series, and the upper spherical surface pad group and the lower spherical surface pad group are fixed on two sides of the outer arc frame; the upper spherical surface pad group and the lower spherical surface pad group are fixed by adopting an upper concentric spherical surface pad group and a lower concentric spherical surface pad group, a guide post is fixed on an outer arc frame, a guide post anti-rotation stop block is welded on the outer arc frame and is clung to the guide post, a movable slide plate and a movable slide plate pad group are fixed on a cylinder flange of an inner arc frame, and a movable slide plate and a fixed long slide plate fixed on the guide post form a slide plate guide structure; the outer arc roller is fixed on the outer arc frame, and the inner arc roller is fixed on the inner arc frame.
The slab caster sector roll gap adjusting device is characterized in that: the upper spherical surface pad group and the lower spherical surface pad group are locked and fixed on two sides of the outer arc frame through the base plate and the locking nut group.
The slab caster sector roll gap adjusting device is characterized in that: the inner arc frame is provided with an upper cover plate.
The slab caster sector roll gap adjusting device is characterized in that: the clamping hydraulic cylinder is fixed on the inner arc frame through a hydraulic cylinder fixing screw.
The slab caster sector roll gap adjusting device is characterized in that: the guide post is fixed on the outer arc frame through a guide post fixing screw.
The slab caster sector roll gap adjusting device is characterized in that: the movable slide plate and the movable slide plate gasket group are fixed on the inner arc frame cylinder flange through movable slide plate fixing screws.
Compared with the prior art, the invention has the beneficial effects that the function of clamping the casting blank by the inner arc roller and the outer arc roller of the sector section is realized, the roller gap can be remotely and on-line adjusted, the function conversion between static soft reduction and dynamic soft reduction can be conveniently realized, the structure is simple, the disassembly and the assembly are convenient and flexible, the invention is suitable for the sector section of slab continuous casting machines in all areas from ultra-narrow sections to ultra-wide sections, the requirements of the casting blank for clamping the casting blank and realizing soft reduction by remotely and on-line adjusting the roller gap can be met, the adaptability is strong, the device can be detached on line even under special conditions, the equipment is not easy to damage in the use process, the maintenance is very convenient, and the maintenance cost is low.
Drawings
FIG. 1 is a top view of an embodiment of a sector four set roll gap adjustment arrangement;
FIG. 2 is a cross-sectional view of a roll gap adjustment apparatus according to an embodiment of the present invention in a vertical casting direction;
FIG. 3 is a cross-sectional view of the roll gap adjusting apparatus of the same side according to the embodiment of the present invention in the casting flow direction.
Description of the marks in the accompanying drawings:
in fig. 1: a right inlet side roll gap adjusting device 1, a right outlet side roll gap adjusting device 2, a left inlet side roll gap adjusting device 3 and a left outlet side roll gap adjusting device 4.
In fig. 2: the clamping hydraulic cylinder 5, the hydraulic cylinder fixing screw 6, the fork joint 7, the joint bearing 8, the pin shaft 9, the pull rod 10, the guide column 11, the guide column fixing screw 12, the guide column anti-rotation stop block 13, the upper spherical surface pad group 14, the lower spherical surface pad group 15, the base plate 16, the locking nut group 17, the outer arc frame 18, the fixed long slide plate 19, the movable slide plate 20, the movable slide plate pad group 21, the movable slide plate fixing screw 22, the inner arc frame 23, the pin shaft end baffle 24, the shaft end baffle bolt 25 and the upper cover plate 26.
In fig. 3: outer arc rolls 27, inner arc rolls 28, and cast slab 29.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the roll gap adjusting device with the function of conveniently dismounting and remotely adjusting the roll gap on line comprises four groups of roll gap adjusting devices on the fan-shaped section of each slab caster, wherein the four groups of roll gap adjusting devices are respectively a right inlet side roll gap adjusting device 1, a right outlet side roll gap adjusting device 2, a left inlet side roll gap adjusting device 3 and a left outlet side roll gap adjusting device 4, and the four groups of roll gap adjusting devices have the same structural form.
As shown in fig. 2, each set of roll gap adjustment device mainly comprises a clamping hydraulic cylinder 5, a pull rod 10, an inner arc frame 23 and an outer arc frame 18, wherein the clamping hydraulic cylinder 5 is provided with a built-in displacement sensor. The clamping hydraulic cylinder 5 is fixed on the inner arc frame 23 through the hydraulic cylinder fixing screw 6, a piston rod of the clamping hydraulic cylinder 5 is in threaded connection with the fork joint 7, the fork joint 7 is hinged with a joint bearing 8 at the upper part of the pull rod 10 through a pin shaft 9, a pin shaft end baffle 24 fixed on the fork joint 7 through a shaft end baffle bolt 25 clamps the outward end part of the pin shaft 9, so that the axial movement of the pin shaft 9 is prevented, the bottom of the pull rod 10 is connected in series with an upper spherical pad group 14, a lower spherical pad group 15, a base plate 16 and a locking nut group 17, and the upper spherical pad group 14 and the lower spherical pad group 15 are fixed on two sides of the outer arc frame 18 and locked through the base plate 16 and the locking nut group 17. The upper spherical pad group 14 and the lower spherical pad group 15 are fixed by adopting the upper concentric spherical pad group and the lower concentric spherical pad group, thereby overcoming the processing error and improving the precision. The guide post 11 is fixed on the outer arc frame 18 through the guide post fixing screw 12, the guide post anti-rotation stop block 13 is welded on the outer arc frame 18 and clings to the guide post 11 to prevent the guide post 11 from rotating, the movable slide plate 20 and the movable slide plate gasket group 21 are fixed on the cylinder flange of the inner arc frame 23 through the movable slide plate fixing screw 22 and form a slide plate guide structure with the fixed long slide plate 19 fixed on the guide post 11, and each group of roll gap adjusting devices can be provided with two slide plate guide structures. The upper cover plate 26 is arranged on the inner arc frame 23, and the pin shaft 9 can be pulled out by opening the upper cover plate 26. When the outer arc frame 18 and the inner arc frame 23 are required to be separated, the clamping cylinder 5 is required to be decompressed, so that the roll gap is adjusted to be minimum, the upper cover plate 26 is opened, and the clamping cylinder is pulled out.
As shown in fig. 3, the outer arc roller 27 fixed to the outer arc frame 18 and the inner arc roller 28 fixed to the inner arc frame 23 sandwich the cast slab 29, and the inlet side and outlet side gap adjusting devices individually adjust the moving strokes of the inlet side and outlet side clamping hydraulic cylinders in a remote control manner, so that the inlet side gap is large and the outlet side gap is small, and the sector section realizes the gap contraction function.
The roll gap adjusting device has the functions of convenient disassembly and assembly and long-distance on-line adjustment of the roll gap, the clamping hydraulic cylinder 5 adopts the built-in displacement sensor, the sensor is easy to protect, the interference of external environment is avoided, and the roll gap adjusting precision is high; the bottom of the pull rod 10 is fixed on the outer arc frame by adopting an upper concentric spherical cushion group and a lower concentric spherical cushion group, so that the processing error is overcome, the installation and adjustment of the posture of the pull rod 10 are facilitated, and the pull rod 10 is always vertical to the outer arc frame 18; the pin shaft 9 is connected with the fork joint 7 in series at the inner arc frame 23 and is connected with the pull rod 10, so that the separation and the combined operation of the inner arc frame and the outer arc frame of the sector section are simple and convenient, the workload of replacing and maintaining the sector section is reduced to a great extent, the operation rate of the continuous casting machine is improved, the production preparation time of the continuous casting machine is saved, and considerable invisible economic benefits are created for customers to a certain extent.
The working process of the roll gap adjusting device is as follows: when the roll gap distance needs to be increased, the piston rod of the clamping hydraulic cylinder 5 stretches, and the distance between the inner arc frame 23 and the outer arc frame 18 is increased through the guide post 11; when the roll gap distance needs to be reduced, the piston rod of the clamping hydraulic cylinder 5 is recovered, and the distance between the inner arc frame 23 and the outer arc frame 18 is reduced through the guide post 11. Thereby simply and quickly realizing the online real-time adjustment of the roll gap distance. When the maintenance device needs to be replaced, the clamping hydraulic cylinder 5 is depressurized, then the upper cover plate 26 is opened, the pin shaft 9 is pulled out, and the outer arc frame 18 and the inner arc frame 23 can be separated, so that the operation is simple and convenient.
Claims (4)
1. The fan-shaped section roll gap adjusting device of the slab continuous casting machine comprises four groups of roll gap adjusting devices, namely a right inlet side roll gap adjusting device, a right outlet side roll gap adjusting device, a left inlet side roll gap adjusting device and a left outlet side roll gap adjusting device, wherein the four groups of roll gap adjusting devices have the same structural form,
each group of roll gap adjusting device comprises a clamping hydraulic cylinder, a pull rod, an inner arc frame and an outer arc frame, wherein the clamping hydraulic cylinder is provided with a built-in displacement sensor, and is fixed on the inner arc frame;
the method is characterized in that: the piston rod of the clamping hydraulic cylinder is in threaded connection with the fork joint, the fork joint is hinged with a joint bearing at the upper part of the pull rod through a pin shaft, a pin shaft end baffle plate which is fixed on the fork joint through a pin shaft end baffle plate bolt is used for clamping the outward end part of the pin shaft, an upper cover plate is arranged on the inner arc frame, and the pin shaft is positioned at the inner side of the upper cover plate; the bottom of the pull rod is connected in series with an upper spherical surface pad group, a lower spherical surface pad group, a base plate and a locking nut group, the upper spherical surface pad group and the lower spherical surface pad group are fixed on two sides of the outer arc frame, and the upper spherical surface pad group and the lower spherical surface pad group are fixed by adopting an upper concentric spherical surface pad group and a lower concentric spherical surface pad group;
the upper spherical surface pad group and the lower spherical surface pad group are locked and fixed on two sides of the outer arc frame through a base plate and a locking nut group;
the guide post is fixed on the outer arc frame, the guide post anti-rotation stop block is welded on the outer arc frame, the guide post is tightly clung to the guide post, the movable slide plate and the movable slide plate gasket set are fixed on the inner arc frame cylinder flange, and the movable slide plate and the fixed long slide plate fixed on the guide post form a slide plate guide structure; the outer arc roller is fixed on the outer arc frame, and the inner arc roller is fixed on the inner arc frame.
2. The slab caster segment roll gap adjustment apparatus of claim 1, wherein: the clamping hydraulic cylinder is fixed on the inner arc frame through a hydraulic cylinder fixing screw.
3. The slab caster segment roll gap adjustment apparatus of claim 1, wherein: the guide post is fixed on the outer arc frame through a guide post fixing screw.
4. The slab caster segment roll gap adjustment apparatus of claim 1, wherein: the movable slide plate and the movable slide plate gasket group are fixed on the inner arc frame cylinder flange through movable slide plate fixing screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244580.9A CN107900300B (en) | 2017-11-30 | 2017-11-30 | Sector section roll gap adjusting device of slab continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711244580.9A CN107900300B (en) | 2017-11-30 | 2017-11-30 | Sector section roll gap adjusting device of slab continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107900300A CN107900300A (en) | 2018-04-13 |
| CN107900300B true CN107900300B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711244580.9A Active CN107900300B (en) | 2017-11-30 | 2017-11-30 | Sector section roll gap adjusting device of slab continuous casting machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396373B (en) * | 2018-12-13 | 2024-02-06 | 中冶京诚工程技术有限公司 | Full arc slab caster sector 0 section |
| CN113399638B (en) * | 2021-06-29 | 2022-09-16 | 上海二十冶建设有限公司 | Partitioned step-by-step debugging method for sector section electrical system of slab caster |
| CN115069996A (en) * | 2022-08-01 | 2022-09-20 | 新余钢铁股份有限公司 | Slab caster sector section opening adjusting device and adjusting method thereof |
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| JPH0871719A (en) * | 1994-09-09 | 1996-03-19 | Kobe Steel Ltd | Roll segment for guiding cast slab |
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| CN103084405A (en) * | 2013-01-25 | 2013-05-08 | 中冶南方工程技术有限公司 | Novel roll gap adjusting device of short-stress-path rolling mill |
| CN103878331A (en) * | 2014-03-27 | 2014-06-25 | 中国重型机械研究院股份公司 | Sector segment structure capable of compositely pressing continuous casting solidification tail end of extra-thick plate |
| CN203791596U (en) * | 2014-03-27 | 2014-08-27 | 中国重型机械研究院股份公司 | Extra-thick steel plate continuous casting solidification tail end composite screw down device |
| CN207723450U (en) * | 2017-11-30 | 2018-08-14 | 中冶连铸技术工程有限责任公司 | A kind of fan-shaped sections of slab continuous roll-separating mechanism |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0871719A (en) * | 1994-09-09 | 1996-03-19 | Kobe Steel Ltd | Roll segment for guiding cast slab |
| CN2520965Y (en) * | 2001-12-17 | 2002-11-20 | 机械工业部西安重型机械研究所 | Fan-shape section clamping device for continuous casting machine |
| CN201239782Y (en) * | 2008-08-13 | 2009-05-20 | 中国第一重型机械集团公司 | Clamp device for sectorial segment of continuous casting machine |
| CN101579725A (en) * | 2009-06-19 | 2009-11-18 | 中冶赛迪工程技术股份有限公司 | Segment of gapless roll gap adjustment device |
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| CN102247984A (en) * | 2011-06-29 | 2011-11-23 | 北京京诚瑞信长材工程技术有限公司 | Short-stress wire rolling mill |
| CN103084405A (en) * | 2013-01-25 | 2013-05-08 | 中冶南方工程技术有限公司 | Novel roll gap adjusting device of short-stress-path rolling mill |
| CN103878331A (en) * | 2014-03-27 | 2014-06-25 | 中国重型机械研究院股份公司 | Sector segment structure capable of compositely pressing continuous casting solidification tail end of extra-thick plate |
| CN203791596U (en) * | 2014-03-27 | 2014-08-27 | 中国重型机械研究院股份公司 | Extra-thick steel plate continuous casting solidification tail end composite screw down device |
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| CN107900300A (en) | 2018-04-13 |
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