EP0207055B1 - Continuous casting plant with a mould stored on an oscillating lifting table - Google Patents

Continuous casting plant with a mould stored on an oscillating lifting table Download PDF

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Publication number
EP0207055B1
EP0207055B1 EP19860890143 EP86890143A EP0207055B1 EP 0207055 B1 EP0207055 B1 EP 0207055B1 EP 19860890143 EP19860890143 EP 19860890143 EP 86890143 A EP86890143 A EP 86890143A EP 0207055 B1 EP0207055 B1 EP 0207055B1
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EP
European Patent Office
Prior art keywords
lifting table
eccentric
pipe
flange
continuous casting
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.)
Expired
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EP19860890143
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German (de)
French (fr)
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EP0207055A2 (en
EP0207055A3 (en
Inventor
Werner Scheurecker
Gottfried Deibl
Heinrich Dipl.-Ing. Thöne
Kurt Schöffl
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Primetals Technologies Austria GmbH
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Voestalpine AG
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Publication of EP0207055A2 publication Critical patent/EP0207055A2/en
Publication of EP0207055A3 publication Critical patent/EP0207055A3/en
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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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053—Means for oscillating the moulds

Definitions

  • the invention relates to a continuous caster with a mold mounted on a frame-like lifting table that oscillates with respect to a supporting frame and is guided by guides relative to the supporting frame in the axial direction of the mold cavity, two eccentric shafts being provided parallel to one another and each being arranged on a frame side of the lifting table , which each extend approximately over the entire frame side of the lifting table and on which the lifting table is supported close to one of its corners by means of supporting means articulated on the eccentric shafts.
  • a continuous caster of this type is known from DE-A 3000117.
  • the support means are formed by leaf springs in this known system.
  • the disadvantage here is that the movement of the leaf springs can cause the lift table movement to deviate from the strand guideway, which causes skewing or tilting of the mold relative to the ideal strand guideway.
  • the lifting table is more or less raised at the point at which the one support means is articulated on the eccentric shaft than at the point at which the second support means belonging to this eccentric shaft is provided.
  • the occurrence of vibrations which disturb the movement of the mold cannot be avoided.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a continuous caster of the type described in which an exact lifting and lowering of the lifting table is ensured, but with few moving parts the sufficiency is found and the movements of the Disturbing vibrations can be avoided.
  • the support means are designed as connecting rods, two connecting rods arranged at the ends of one of the eccentric shafts being rigidly connected to one another and supported together on a support axis which in turn is supported at the corners of the lifting table.
  • the solution according to the invention allows, in addition to the rotation of the two eccentric shafts at the same angle, also an exact four-point mounting of the frame-like lifting table, so that the lifting table remains evenly guided even under locally changing loads due to friction occurring between the mold and the strand. This is particularly important in the case of lifting tables for molds, with which strands with a slab cross-sectional format are cast.
  • connecting rods as support means is known per se (EP-B 0073160, EP-A 0124362), but in the continuous casting systems in which connecting rods are provided, the connecting rods can be moved independently and independently of the adjacent connecting rod, so that an exact one Synchronization of the connecting rods is not guaranteed.
  • An advantageous, particularly robust construction is characterized in that two connecting rods arranged at the ends of an eccentric shaft are rigidly connected by means of a tube arranged concentrically to the support axis, which is pivotally mounted on the support axis, and that the support axis is rigid at the corners of the frame-like lifting table , preferably by means of trestles.
  • each eccentric shaft preferably has two cranks which are arranged at the ends of a cylindrical shaft part and are rotatably mounted on the supporting frame and the shaft part of each eccentric shaft is surrounded by a tube which is supported at both ends of the shaft part via eccentric bushings, wherein the eccentric sleeves are non-rotatable and rotatable with respect to the tube, the tube is releasably attached to the eccentric sleeves and can be fixed in different angular positions with respect to the cranks, and the connecting rods are articulated on the tube near the ends thereof.
  • a flange is expediently fastened to the end of the tube and a counter flange abutting against this flange on the cranks and the flange can be fixed to the counter flange by means of connecting pieces passing through the flange and the counter flange.
  • FIG. 1 shows a plan view of a lifting table with the mold lifted off
  • FIG. 2 shows a section along line 11-11 of FIG. 1
  • FIG. 1 shows a section along line 111-111 of FIG 2 show.
  • FIG. 4 shows a modified embodiment in a representation analogous to FIG. 3.
  • a mold 2 shown with dashed lines in FIG. 2 can be placed on a frame-like lifting table 1 which is rectangular in plan, the mold 2 partially projecting downwards through the lifting table 1.
  • the lifting table 1 which is designed as a hollow box girder, coolant supply and discharge pipes, not shown, open.
  • the lifting table 1 serves as a support for the mold 2, the mold being supported on the lifting table 1 with laterally arranged brackets 3 and being connected in line with the corresponding coolant supplying and discharging cavities of the lifting table.
  • the lifting table 1 performs an oscillating movement with respect to a stationary support frame 4, this movement being intended to oscillate exactly vertically in the case of a mold 2 with a straight axis 5 of the mold cavity 6.
  • An important prerequisite for good strand quality is the exact observance of the desired oscillation; in particular, misalignments of the lifting table 1 (and thus tilting of the Kokil le 2) and unintentional vibrations are avoided, since such misalignments and vibrations can damage the extremely thin strand shell of the strand emerging from the mold.
  • each eccentric shaft 7, 7' has a shaft part 12 which is rotatably mounted at the end on the support frame 4 by means of bearing blocks 11 and at the ends of which a crank 13 is provided.
  • Each of the cranks 13 is mounted in its own bearing bush 15 by means of a roller bearing 14.
  • the bearing bushes 15 assigned to an eccentric shaft 7, 7 ' are each attached via connecting rods 16 to the ends of a tube 17 which has approximately the length of an eccentric shaft 7, 7'.
  • Each tube 17 is penetrated by an axis 18 on which the tube is pivotally mounted by means of roller bearings 19 arranged in the plane of the connecting rods.
  • roller bearings 14 and 19 plain bearings could also be provided.
  • the ends 20 of the axis 18 protrude beyond the tube 17, which is sealed with respect to the axis 18 by means of a closure cover 21, and are rigidly inserted into support brackets 22 which are fastened to the underside 23 of the lifting table 1 at the corners 24 thereof.
  • a drive motor 25 is arranged symmetrically between them, just to the side of the lifting table 1 on the supporting frame 4, which is coupled to both eccentric shafts 7, 7 ' via drive shafts 26, 26 ' and corner gears 27, 27 ' . Due to the symmetrical arrangement of the drive motor 25 centrally between the eccentric shafts 7, 7 ', an identical angular position is always ensured for both eccentric shafts 7, 7' with the least effort, so that the lifting table 1 oscillates in a precisely horizontal position - without any misalignment.
  • the eccentric shafts 7, 7 ' are supported on the end side, ie by means of the cranks 13 via bearing blocks 11 on the supporting frame 4, and the connecting rods 16 are rotatably supported on the shaft part 12 of the eccentric shafts arranged between the cranks 13.
  • Each shaft part 12 is surrounded by a tube 28 which is supported at the ends of the shaft part 12 via eccentric bushes 29.
  • the connecting rods 16 are rotatably supported on the tube 28 by means of roller bearings 30, in the vicinity of the eccentric bushes 29 arranged at the ends.
  • the eccentric bushes 29 are fixed non-rotatably on the shaft part 12, but can be rotated relative to the tube 28, as a result of which the eccentricity 31 between the axis 32 of the tube 28 and the axis 33 of the cranks 13 can be changed.
  • a flange 34 is fastened to the tube 28 at one end and bears against a counter flange 35 mounted on the adjacent crank 13.
  • the two flanges 34, 35 are releasably connected to one another by connecting pins 36 passing through them.
  • the two flanges 34, 35 are rotated against each other after loosening the connecting pins 36 by the amount which corresponds to the desired eccentricity 31 and fixed in this new position against one another by inserting the connecting pins 36.
  • a key extension is expediently provided on a drive shaft 26, 26' extending from the drive motor 25 to the eccentric shaft 7 or 7 'or to the corner gear 27 or 27 ' .
  • the lifting table 1 is guided through the connecting rod 16 in the axial direction of the eccentric shafts 7, 7 '.
  • a guide formed from spring bands 37 is arranged symmetrically to the central plane 38 arranged, the spring bands 37 are attached with their ends 39 to the lifting table 1 and in the center on a bracket 40 rigidly arranged on the stationary support frame 4.
  • these spring bands 37 are only shown in FIG. 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Description

Die Erfindung betrifft eine Stranggiessanlage mit einer auf einem gegenüber einem Stützgerüst oszillierenden, rahmenartigen Hubtisch gelagerten Kokille, der mittels Führungen gegenüber dem Stützgerüst in Achsrichtung des Kokillenhohlraumes geführt ist, wobei am Stützgerüst zwei zueinander parallel gerichtete und jeweils an einer Rahmenseite des Hubtisches angeordnete Exzenterwellen vorgesehen sind, die sich jeweils etwa über die gesamte Rahmenseite des Hubtisches erstrecken und an denen der Hubtisch jeweils nahe bei einer seiner Ecken mittels an den Exzenterwellen gelenkig gelagerter Stützmittel abgestützt ist.The invention relates to a continuous caster with a mold mounted on a frame-like lifting table that oscillates with respect to a supporting frame and is guided by guides relative to the supporting frame in the axial direction of the mold cavity, two eccentric shafts being provided parallel to one another and each being arranged on a frame side of the lifting table , which each extend approximately over the entire frame side of the lifting table and on which the lifting table is supported close to one of its corners by means of supporting means articulated on the eccentric shafts.

Eine Stranggiessanlage dieser Art ist aus der DE-A 3000117 bekannt. Die Stützmittel sind bei dieser bekannten Anlage von Blattfedern gebildet. Nachteilig ist hierbei, dass es infolge der Bewegungsmöglichkeiten der Blattfedern zu einem Abweichen der Hubtischbewegung von der Strangführungsbahn kommen kann, wodurch Schiefstellungen bzw. Verkantungen der Kokille gegenüber der idealen Strangführungsbahn verursacht werden.A continuous caster of this type is known from DE-A 3000117. The support means are formed by leaf springs in this known system. The disadvantage here is that the movement of the leaf springs can cause the lift table movement to deviate from the strand guideway, which causes skewing or tilting of the mold relative to the ideal strand guideway.

Es kann somit dazukommen, dass der Hubtisch an der Stelle, an der das eine Stützmittel an der Exzenterwelle angelenkt ist, mehr oder weniger angehoben wird als an der Stelle, an der das zweite, zu dieser Exzenterwelle gehörende Stützmittel vorgesehen ist. Auch kann das Auftreten von die Bewegung der Kokille störenden Schwingungen nicht vermieden werden.It can therefore occur that the lifting table is more or less raised at the point at which the one support means is articulated on the eccentric shaft than at the point at which the second support means belonging to this eccentric shaft is provided. The occurrence of vibrations which disturb the movement of the mold cannot be avoided.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Stranggiessanlage der eingangs beschriebenen Art zu schaffen, bei der ein exaktes Heben und Senken des Hubtisches sichergestellt ist, wobei jedoch mit wenig bewegten Teilen das Auslangen gefunden wird und die Bewegungen des Hubtisches störende Schwingungen vermieden werden.The invention aims to avoid these disadvantages and difficulties and has as its object to provide a continuous caster of the type described in which an exact lifting and lowering of the lifting table is ensured, but with few moving parts the sufficiency is found and the movements of the Disturbing vibrations can be avoided.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Stützmittel als Pleuel ausgebildet sind, wobei jeweils zwei an den Enden einer der Exzenterwellen angeordnete Pleuel miteinander starr verbunden sind und gemeinsam an einer Stützachse abgestützt sind, die ihrerseits an den Ecken des Hubtisches abgestützt ist. Die erfindungsgemässe Lösung gestattet neben winkelgleichem Umlauf der beiden Exzenterwellen auch eine exakte Vierpunktlagerung des rahmenartigen Hubtisches, so dass der Hubtisch auch bei örtlich wechselnden Belastungen infolge von zwischen der Kokille und dem Strang auftretenden Reibungen gleichmässig geführt bleibt. Dies ist insbesondere bei Hubtischen für Kokillen, mit denen Stränge mit Brammenquerschnittsformat gegossen werden, von Bedeutung.This object is achieved according to the invention in that the support means are designed as connecting rods, two connecting rods arranged at the ends of one of the eccentric shafts being rigidly connected to one another and supported together on a support axis which in turn is supported at the corners of the lifting table. The solution according to the invention allows, in addition to the rotation of the two eccentric shafts at the same angle, also an exact four-point mounting of the frame-like lifting table, so that the lifting table remains evenly guided even under locally changing loads due to friction occurring between the mold and the strand. This is particularly important in the case of lifting tables for molds, with which strands with a slab cross-sectional format are cast.

Das Vorsehen von Pleueln als Stützmittel ist an sich bekannt (EP-B 0073160, EP-A 0124362), jedoch sind bei den Stranggiessanlagen, bei denen Pleuel vorgesehen sind, die Pleuel jeweils für sich und unabhängig vom benachbarten Pleuel bewegbar, so dass ein exakter Gleichlauf der Pleuel nicht gewährleistet ist.The provision of connecting rods as support means is known per se (EP-B 0073160, EP-A 0124362), but in the continuous casting systems in which connecting rods are provided, the connecting rods can be moved independently and independently of the adjacent connecting rod, so that an exact one Synchronization of the connecting rods is not guaranteed.

Eine vorteilhafte, besonders robuste Konstruktion ist dadurch gekennzeichnet, dass jeweils zwei an den Enden einer Exzenterwelle angeordnete Pleuel mittels eines konzentrisch zur Stützachse angeordneten Rohres starr verbunden sind, welches an der Stützachse schwenkbeweglich gelagert ist, und dass die Stützachse an den Ecken des rahmenartigen Hubtisches starr, vorzugsweise mittels Stützböcken, befestigt ist.An advantageous, particularly robust construction is characterized in that two connecting rods arranged at the ends of an eccentric shaft are rigidly connected by means of a tube arranged concentrically to the support axis, which is pivotally mounted on the support axis, and that the support axis is rigid at the corners of the frame-like lifting table , preferably by means of trestles.

Zwecks Einstellens unterschiedlicher Hubhöhen des Hubtisches, weist vorzugsweise jede Exzenterwelle zwei an den Enden eines zylindrischen Wellenteiles angeordnete Kurbeln auf, die am Stützgerüst drehbar gelagert sind und ist der Wellenteil jeder Exzenterwelle von einem Rohr umgeben, welches an beiden Enden des Wellenteiles über Exzenterbüchsen abgestützt ist, wobei die Exzenterbüchsen mit dem Wellenteil unverdrehbar und gegenüber dem Rohr verdrehbar sind, das Rohr gegenüber den Exzenterbüchsen lösbar befestigt und gegenüber den Kurbeln in unterschiedlichen Winkelstellungen fixierbar ist, und sind die Pleuel an dem Rohr nahe dessen Enden angelenkt.For the purpose of setting different lifting heights of the lifting table, each eccentric shaft preferably has two cranks which are arranged at the ends of a cylindrical shaft part and are rotatably mounted on the supporting frame and the shaft part of each eccentric shaft is surrounded by a tube which is supported at both ends of the shaft part via eccentric bushings, wherein the eccentric sleeves are non-rotatable and rotatable with respect to the tube, the tube is releasably attached to the eccentric sleeves and can be fixed in different angular positions with respect to the cranks, and the connecting rods are articulated on the tube near the ends thereof.

Dabei sind zweckmässig an dem Rohr stirnseitig ein Flansch und an den Kurbeln ein an diesem Flansch anliegender Gegenflansch befestigt und ist der Flansch an dem Gegenflansch mittels den Flansch und den Gegenflansch durchsetzender Verbindungsstücke fixierbar.In this case, a flange is expediently fastened to the end of the tube and a counter flange abutting against this flange on the cranks and the flange can be fixed to the counter flange by means of connecting pieces passing through the flange and the counter flange.

Die Erfindung ist nachstehend anhand der schematischen Zeichnung näher erläutert, wobei Fig. einen Grundriss eines Hubtisches bei abgehobener Kokille, Fig. 2 einen Schnitt gemäss der Linie 11-11 der Fig. 1 und Fig. einen Schnitt gemäss der Linie 111-111 der Fig. 2 zeigen. Fig. 4 stellt in zur Fig.3 analoger Darstellung eine geänderte Ausführungsform dar.The invention is explained in more detail below with the aid of the schematic drawing, in which FIG. 1 shows a plan view of a lifting table with the mold lifted off, FIG. 2 shows a section along line 11-11 of FIG. 1 and FIG. 1 shows a section along line 111-111 of FIG 2 show. FIG. 4 shows a modified embodiment in a representation analogous to FIG. 3.

Gemäss der in den Fig. 1 bis 3 schematisch dargestellten Ausführungsform ist auf einem im Grundriss rechteckigen, rahmenartigen Hubtisch 1 eine in Fig. 2 mit strichlierten Linien dargestellte Kokille 2 aufsetzbar, wobei die Kokille 2 zum Teil durch den Hubtisch 1 hindurch nach unten ragt. In den Hubtisch 1, der als hohler Kastenträger ausgebildet ist, münden nicht näher dargestellte Kühlmittelzu- und -ableitungsrohre. Der Hubtisch 1 dient als Auflage für die Kokille 2, wobei die Kokille mit seitlich angeordneten Konsolen 3 am Hubtisch 1 abgestützt ist und leitungsmässig mit den entsprechenden Kühlmittel zu- und ableitenden Hohlräumen des Hubtisches verbunden ist.According to the embodiment shown schematically in FIGS. 1 to 3, a mold 2 shown with dashed lines in FIG. 2 can be placed on a frame-like lifting table 1 which is rectangular in plan, the mold 2 partially projecting downwards through the lifting table 1. In the lifting table 1, which is designed as a hollow box girder, coolant supply and discharge pipes, not shown, open. The lifting table 1 serves as a support for the mold 2, the mold being supported on the lifting table 1 with laterally arranged brackets 3 and being connected in line with the corresponding coolant supplying and discharging cavities of the lifting table.

Der Hubtisch 1 führt gegenüber einem ortsfesten Stützgerüst 4 eine oszillierende Bewegung aus, wobei diese Bewegung bei einer Kokille 2 mit gerader Achse 5 des Kokillenhohlraumes 6, genau vertikal oszillieren soll. Eine wichtige Voraussetzung für eine gute Strangqualität stellt die exakte Einhaltung der gewünschten Oszillation dar; insbesondere sollen Schiefstellungen des Hubtisches 1 (und damit Verkantungen der Kokille 2) sowie unbeabsichtigte Schwingungen vermieden werden, da solche Schiefstellungen und Schwingungen zu einer Beschädigung der noch äusserst dünnen Strangschale des aus der Kokille austretenden Stranges führen können.The lifting table 1 performs an oscillating movement with respect to a stationary support frame 4, this movement being intended to oscillate exactly vertically in the case of a mold 2 with a straight axis 5 of the mold cavity 6. An important prerequisite for good strand quality is the exact observance of the desired oscillation; in particular, misalignments of the lifting table 1 (and thus tilting of the Kokil le 2) and unintentional vibrations are avoided, since such misalignments and vibrations can damage the extremely thin strand shell of the strand emerging from the mold.

Zur Erzeugung einer Oszillationsbewegung der Kokille 2 sind unterhalb des Hubtisches 1 zwei zueinander parallele Exzenterwellen 7, 7' vorgesehen, wobei jeweils eine Exzenterwelle 7, 7' unter einer Rahmenseite 8, 8' des Hubtisches 1 angeordnet ist und eine Länge 9 aufweist, die etwa der Länge 10 dieser Rahmenseite 8, 8' des Hubtisches 1 entspricht. Jede Exzenterwelle 7, 7' weist einen endseitig am Stützgerüst 4 mittels Lagerböcken 11 drehbar gelagerten Wellenteil 12 auf, an dessen Enden jeweils eine Kurbel 13 vorgesehen ist. Jede der Kurbeln 13 ist mittels eines Wälzlagers 14 in einer eigenen Lagerbüchse 15 gelagert. Die einer Exzenterwelle 7,7' zugeordneten Lagerbüchsen 15 sind jeweils über Pleuel 16 an den Enden eines Rohres 17 befestigt, welches etwa die Länge einer Exzenterwelle 7, 7' aufweist. Jedes Rohr 17 ist von einer Achse 18 durchsetzt, an der das Rohr mittels in der Ebene der Pleuel angeordneter Wälzlager 19 schwenkbar gelagert ist. Anstelle der Wälzlager 14 und 19 könnten auch Gleitlager vorgesehen sein. Die Enden 20 der Achse 18 ragen über das Rohr 17, welches gegenüber der Achse 18 mittels Verschlussdeckel 21 gedichtet ist, hinaus und sind starr in Stützböcken 22, die an der Unterseite 23 des Hubtisches 1 bei dessen Ecken 24 befestigt sind, eingesetzt.To generate an oscillating movement of the mold 2, two mutually parallel eccentric shafts 7, 7 'are provided below the lifting table 1, one eccentric shaft 7, 7' each being arranged under a frame side 8, 8 'of the lifting table 1 and having a length 9 which is approximately corresponds to the length 10 of this frame side 8, 8 'of the lifting table 1. Each eccentric shaft 7, 7 ' has a shaft part 12 which is rotatably mounted at the end on the support frame 4 by means of bearing blocks 11 and at the ends of which a crank 13 is provided. Each of the cranks 13 is mounted in its own bearing bush 15 by means of a roller bearing 14. The bearing bushes 15 assigned to an eccentric shaft 7, 7 'are each attached via connecting rods 16 to the ends of a tube 17 which has approximately the length of an eccentric shaft 7, 7'. Each tube 17 is penetrated by an axis 18 on which the tube is pivotally mounted by means of roller bearings 19 arranged in the plane of the connecting rods. Instead of the roller bearings 14 and 19, plain bearings could also be provided. The ends 20 of the axis 18 protrude beyond the tube 17, which is sealed with respect to the axis 18 by means of a closure cover 21, and are rigidly inserted into support brackets 22 which are fastened to the underside 23 of the lifting table 1 at the corners 24 thereof.

Auf diese Art und Weise befindet sich jeweils eine Kurbel 13 und eine mit dieser zusammenwirkende Pleuel 16 unterhalb einer Ecke 24 bzw. nahe bei einer Ecke 24 des rahmenartigen Hubtisches 1, so dass dieser gegenüber dem ortsfesten Stützgerüst 4 äusserst stabil gelagert ist und die durch die Kurbeln 13 bei Drehen der Exzenterwellen 7, 7' verursachte Oszillationsbewegung vollführt, wobei andere Bewegungen jedoch, z.B. Bewegungen, die durch Schwingungen bzw. einseitige Belastungen des Hubtisches 1 verursacht werden, vermieden werden.In this way, there is in each case a crank 13 and a connecting rod 16 cooperating therewith below a corner 24 or close to a corner 24 of the frame-like lifting table 1, so that it is extremely stable with respect to the stationary support frame 4 and which is supported by the Cranks 13 when the eccentric shafts 7, 7 'are rotated causes oscillatory movement, but other movements, however Movements caused by vibrations or one-sided loads on the lifting table 1 can be avoided.

Zum Antrieb der Exzenterwellen 7, 7' ist symmetrisch zwischen diesen, knapp seitlich des Hubtisches 1 am Stützgerüst 4 ein Antriebsmotor 25 angeordnet, der mit beiden Exzenterwellen 7, 7' über Antriebswellen 26, 26' und Eckgetriebe 27, 27' gekoppelt ist. Durch die symmetrische Anordnung des Antriebsmotors 25 mittig zwischen den Exzenterwellen 7, 7' ist mit geringstem Aufwand für beide Exzenterwellen 7, 7' stets eine identische Winkelstellung sichergestellt, so dass der Hubtisch 1 in genau horizontaler Lage - ohne jede Schiefstellung - oszilliert.To drive the eccentric shafts 7, 7 ', a drive motor 25 is arranged symmetrically between them, just to the side of the lifting table 1 on the supporting frame 4, which is coupled to both eccentric shafts 7, 7 ' via drive shafts 26, 26 ' and corner gears 27, 27 ' . Due to the symmetrical arrangement of the drive motor 25 centrally between the eccentric shafts 7, 7 ', an identical angular position is always ensured for both eccentric shafts 7, 7' with the least effort, so that the lifting table 1 oscillates in a precisely horizontal position - without any misalignment.

Die oben beschriebene Konstruktion zeichnet sich durch grosse Robustheit und Starrheit aus. Anstelle der zwischen dem Rohr 17 und der Achse 18 vorgesehenen Wälzlager, die nur eine Drehbewegung um einen sehr kleinen Winkel ausführen, können auch elastische Ringblöcke, die Drehschwingungen um ihre Achse zulassen, jedoch Schwingungen in Achsrichtung oder senkrecht dazu verhindern, eingesetzt werden. Weiters ist es möglich, das Rohr 17 zu vermeiden und die Pleuel 16 direkt an der Achse 18 zu befestigen, in welchem Fall die Achse 18 mit ihren Enden 20 in den Stützböcken 22 nicht starr angeordnet ist, sondern schwenkbeweglich gelagert ist.The construction described above is characterized by great robustness and rigidity. Instead of the roller bearings provided between the tube 17 and the axis 18, which only carry out a rotary movement by a very small angle, elastic ring blocks which allow torsional vibrations about their axis, but prevent vibrations in the axial direction or perpendicular thereto, can be used. Furthermore, it is possible to avoid the pipe 17 and to fasten the connecting rods 16 directly to the axle 18, in which case the ends 18 of the axle 18 are not rigidly arranged in the support brackets 22, but rather are pivotably mounted.

Gemäss der in Fig.4 dargestellten Ausführungsform sind die Exzenterwellen 7, 7' endseitig, d.h. mittels der Kurbeln 13 über Lagerböcke 11 am Stützgerüst 4 gelagert und stützen sich die Pleuel 16 am zwischen den Kurbeln 13 angeordneten Wellenteil 12 der Exzenterwellen drehbar ab. Jeder Wellenteil 12 ist hierbei von einem Rohr 28 umgeben, welches an den Enden des Wellenteiles 12 über Exzenterbüchsen 29 abgestützt ist. Die Pleuel 16 sind an dem Rohr 28 mittels Wälzlager 30 drehbar gelagert, und zwar in der Nähe der endseitig angeordneten Exzenterbüchsen 29.According to the embodiment shown in FIG. 4, the eccentric shafts 7, 7 'are supported on the end side, ie by means of the cranks 13 via bearing blocks 11 on the supporting frame 4, and the connecting rods 16 are rotatably supported on the shaft part 12 of the eccentric shafts arranged between the cranks 13. Each shaft part 12 is surrounded by a tube 28 which is supported at the ends of the shaft part 12 via eccentric bushes 29. The connecting rods 16 are rotatably supported on the tube 28 by means of roller bearings 30, in the vicinity of the eccentric bushes 29 arranged at the ends.

Die Exzenterbüchsen 29 sind an dem Wellenteil 12 unverdrehbar fixiert, lassen sich jedoch gegenüber dem Rohr 28 verdrehen, wodurch die Exzentrizität 31 zwischen der Achse 32 des Rohres 28 und der Achse 33 der Kurbeln 13 veränderbar ist. Zum Zweck der Einstellung der Exzentrizität ist an dem Rohr 28 an einem Ende ein Flansch 34 befestigt, der an einem an der benachbarten Kurbel 13 montierten Gegenflansch 35 anliegt. Die beiden Flansche 34, 35 sind durch sie durchsetzende Verbindungsstifte 36 miteinander lösbar verbunden. Um die Exzentrizität zu verstellen, werden die beiden Flansche 34, 35 nach Lösen der Verbindungsstifte 36 gegeneinander um das Mass verdreht, welches der gewünschten Exzentrizität 31 entspricht und in dieser neuen Stellung gegeneinander durch Einsetzen der Verbindungsstifte 36 fixiert. Zum Verdrehen der Exzenterwellen 7, 7' ist zweckmässig an einer vom Antriebsmotor 25 zur Exzenterwelle 7 bzw. 7' bzw. zum Eckgetriebe 27 bzw. 27' reichenden Antriebswelle 26, 26' ein Schlüsselansatz vorgesehen.The eccentric bushes 29 are fixed non-rotatably on the shaft part 12, but can be rotated relative to the tube 28, as a result of which the eccentricity 31 between the axis 32 of the tube 28 and the axis 33 of the cranks 13 can be changed. For the purpose of adjusting the eccentricity, a flange 34 is fastened to the tube 28 at one end and bears against a counter flange 35 mounted on the adjacent crank 13. The two flanges 34, 35 are releasably connected to one another by connecting pins 36 passing through them. In order to adjust the eccentricity, the two flanges 34, 35 are rotated against each other after loosening the connecting pins 36 by the amount which corresponds to the desired eccentricity 31 and fixed in this new position against one another by inserting the connecting pins 36. To turn the eccentric shafts 7, 7 ', a key extension is expediently provided on a drive shaft 26, 26' extending from the drive motor 25 to the eccentric shaft 7 or 7 'or to the corner gear 27 or 27 ' .

Durch die Pleuel 16 ist der Hubtisch 1 in Achsrichtung der Exzenterwellen 7, 7' geführt. Um Abweichungen des Hubtisches 1 von der Vertikalen in zur Achsrichtung der Exzenterwelle rechtwinkeliger, horizontaler Richtung zu vermeiden, ist an einer der beiden Rahmenseiten des Hubtisches 1, an denen keine Exzenterwellen 7, 7' angeordnet sind, eine aus Federbändern 37 gebildete Führung symmetrisch zur Mittelebene 38 angeordnet, wobei die Federbänder 37 mit ihren Enden 39 am Hubtisch 1 und mittig an einer, am ortsfesten Stützgerüst 4 starr angeordneten Konsole 40 befestigt sind. Diese Federbänder 37 sind der Übersichtlichkeit wegen nur in Fig. 2 dargestellt.The lifting table 1 is guided through the connecting rod 16 in the axial direction of the eccentric shafts 7, 7 '. In order to avoid deviations of the lifting table 1 from the vertical in a horizontal direction perpendicular to the axial direction of the eccentric shaft, on one of the two frame sides of the lifting table 1, on which no eccentric shafts 7, 7 ' are arranged, a guide formed from spring bands 37 is arranged symmetrically to the central plane 38 arranged, the spring bands 37 are attached with their ends 39 to the lifting table 1 and in the center on a bracket 40 rigidly arranged on the stationary support frame 4. For the sake of clarity, these spring bands 37 are only shown in FIG. 2.

Claims (4)

1. Continuous casting plant having a mould (2) mounted on a frame-like lifting table (1) reciprocating relative to a supporting construction (4), which lifting table is guided by means of guides relative to the supporting construction (4) in the axial direction (5) of the mould cavity (6), wherein on the supporting construction (4), two eccentric shafts (7, 7') - directed in parallel to each other and each being arranged at one frame side (8, 8' ) of the lifting table (1) - are provided, each extending approximately over the entire frame side (8, 8') of the lifting table (1) and at each of which the lifting table (1), close to its corners (24), is supported by supporting means (16), which are articulately mounted on the eccentric shafts (7, 7'), characterised in that the supporting means are designed as connecting rods (16), always two connecting rods (16) arranged at the ends of one of the eccentric shafts (7,7') are rigidly interconnected and supported in common on a supporting axle (17, 18, 19), which in turn is supported on the corners (24) of the lifting table (1).
2. Continuous casting plant according to claim 1, characterised in that always two connecting rods (16) arranged at the ends of an eccentric shaft (7, 7') are rigidly connected by means of a pipe (17) concentrically arranged to the supporting axle (18), which pipe (17) is pivotably movably mounted on the supporting axle (18), and that the supporting axle (18) is rigidly fastened to the corners (24) of the frame-like lifting table (1), preferably by means of trestles (22).
3. Continuous casting plant according to claim 1 or 2, characterised in that each eccentric shaft (7, 7') is provided with two cranks (13) arranged at the ends of a cylindrical shaft portion (12), which cranks are rotatably mounted on the supporting construction (4), and that the shaft portion (12) of each eccentric shaft (7, 7') is surrounded by a pipe (28), which pipe is supported on both ends of the shaft portion (12) via eccentric bushings (29), the eccentric bushings (29) being non-rotatable with the shaft portion (12) and rotatable relative to the pipe 28, the pipe being detachably fastened relative to the eccentric bushings (29) and fixable at different angular positions relative to the cranks (13), and the connecting rods (16) being hinged to the pipe (28) near the ends thereof.
4. Continuous casting plant according to claim 3, characterised in that a flange (34) is fastened to the pipe (28), at the front side thereof, and that at the cranks (13) a counter-flange (35) contacting that flange (34) is fastened, and that the flange (34) is fixable to the counter-flange (35) by means of connecting pieces (36) penetrating the flange (34) and the counter-flange (35).
EP19860890143 1985-06-27 1986-05-15 Continuous casting plant with a mould stored on an oscillating lifting table Expired EP0207055B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0191685A AT382540B (en) 1985-06-27 1985-06-27 CONTINUOUS CASTING MACHINE WITH A CHOCOLATE STORED ON AN OSCILLATING LIFTING TABLE
AT1916/85 1985-06-27

Publications (3)

Publication Number Publication Date
EP0207055A2 EP0207055A2 (en) 1986-12-30
EP0207055A3 EP0207055A3 (en) 1987-07-22
EP0207055B1 true EP0207055B1 (en) 1988-08-24

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Application Number Title Priority Date Filing Date
EP19860890143 Expired EP0207055B1 (en) 1985-06-27 1986-05-15 Continuous casting plant with a mould stored on an oscillating lifting table

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EP (1) EP0207055B1 (en)
JP (1) JPS623853A (en)
AT (1) AT382540B (en)
DE (1) DE3660575D1 (en)

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Publication number Priority date Publication date Assignee Title
DE10024514C5 (en) * 1999-06-08 2009-05-28 Voest-Alpine Industrieanlagenbau Gmbh continuous casting plant

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DE3925939A1 (en) * 1989-08-03 1991-02-07 Mannesmann Ag CONTINUOUS CASTING SYSTEM WITH A CHILLER OSCILLATION DEVICE
DE3933526A1 (en) * 1989-10-04 1991-04-18 Mannesmann Ag OSCILLATION DEVICE FOR CONTINUOUS CHOCOLATE
US5219029A (en) * 1992-03-09 1993-06-15 Gunther Behrends Oscillator for continuous casting mold
DE4341719C2 (en) * 1993-12-03 2001-02-01 Mannesmann Ag Device for the continuous casting of steel
DE102004020130A1 (en) * 2004-04-24 2005-11-17 Sms Demag Ag Apparatus for receiving a continuous casting mold on a lifting table for casting liquid metals, in particular liquid steel materials
DE102017201496A1 (en) 2017-01-31 2018-08-02 Sms Group Gmbh An oscillating system for a continuous casting mold, and a method for generating an oscillatory movement of a continuous casting mold
CN109047689A (en) * 2018-09-30 2018-12-21 燕山大学 Single servo motor two-side synchronous drives mould non-sinusoidal vibration device
CN112974746B (en) * 2019-12-13 2022-11-29 宝武装备智能科技有限公司 Clamping hydraulic assembly structure for continuous casting machine crystallizer vibration frame
CN111889640B (en) * 2020-09-07 2024-07-19 江苏双友智能装备科技股份有限公司 Aluminum bar casting forming equipment and processing technology thereof
CN113664168B (en) * 2021-07-30 2022-09-16 上海二十冶建设有限公司 Continuous casting crystallizer vibration frame sliding support and installation method

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DE3000117A1 (en) * 1980-01-03 1981-07-09 Sack GmbH, 4000 Düsseldorf DRIVE AND GUIDE DEVICE FOR A CONTINUOUS CASTING COIL
EP0041196A3 (en) * 1980-05-30 1982-01-13 Concast Holding Ag Method and arrangement for oscillating a continuous casting mould
EP0073160B1 (en) * 1981-08-10 1984-12-12 FIVES-CAIL BABCOCK, Société anonyme Driving and guiding mechanism for the oscillations of a continuous casting mould
US4532975A (en) * 1983-04-28 1985-08-06 United States Steel Corporation Continuous casting mold oscillator load indication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10024514C5 (en) * 1999-06-08 2009-05-28 Voest-Alpine Industrieanlagenbau Gmbh continuous casting plant

Also Published As

Publication number Publication date
EP0207055A2 (en) 1986-12-30
ATA191685A (en) 1986-08-15
DE3660575D1 (en) 1988-09-29
AT382540B (en) 1987-03-10
EP0207055A3 (en) 1987-07-22
JPS623853A (en) 1987-01-09

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