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EP0038320B1 - A driving roller stand for continuous casting plants - Google Patents

A driving roller stand for continuous casting plants Download PDF

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Publication number
EP0038320B1
EP0038320B1 EP81890062A EP81890062A EP0038320B1 EP 0038320 B1 EP0038320 B1 EP 0038320B1 EP 81890062 A EP81890062 A EP 81890062A EP 81890062 A EP81890062 A EP 81890062A EP 0038320 B1 EP0038320 B1 EP 0038320B1
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EP
European Patent Office
Prior art keywords
driving
driving roller
drive
roller
stand
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
Application number
EP81890062A
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German (de)
French (fr)
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EP0038320A2 (en
EP0038320A3 (en
Inventor
Aktiengesellschaft Voest-Alpine
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Voestalpine AG
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Voestalpine AG
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Publication of EP0038320A2 publication Critical patent/EP0038320A2/en
Publication of EP0038320A3 publication Critical patent/EP0038320A3/en
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Publication of EP0038320B1 publication Critical patent/EP0038320B1/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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use

Definitions

  • the invention relates to a drive roller stand for continuous casting plants with at least two strand guides arranged next to one another, in particular for steel billet casting plants, with at least one separately driven drive roller provided for each of the strands, a first drive roller having a first drive element being designed as a hollow structural unit and one having a second drive element provided drive shaft of a second drive roller arranged coaxially to the first drive roller passes through this hollow structural unit, the drive shaft being connectable to the second drive element as well as to the second drive roller by means of couplings, and furthermore each drive roller being mounted separately on the drive roller frame.
  • a driving roller stand of the type described in the opening paragraph is known from DE-A-1 483 664.
  • an Oldham coupling is arranged between the first drive roller designed as a hollow assembly and the adjacent second drive roller, which Oldham coupling connects the adjacent drive roller with the drive shaft passing through the hollow assembly. Due to this coupling, the individual strands cannot be arranged in close proximity.
  • This known drive roller stand therefore has a wide construction transverse to the longitudinal direction of the strand.
  • a drive roller stand in which a space-saving, closely adjacent arrangement of the two strand guides is realized is known from DE-A-2 702 894.
  • the drive shaft of the second drive roller is rigidly connected to this drive roller and rotatably mounted in the hollow structural unit of the first drive roller.
  • the invention aims to avoid the disadvantages and difficulties described and has as its object to create a drive roller stand of the type described in the introduction, which enables a very closely adjacent arrangement of the strand guides, the strand guidance in the strand pull-out direction being as short as possible and wherein it is also no longer necessary is to remove multiple drive rollers if only one is damaged.
  • a preferred embodiment is characterized in that the couplings are designed as multi-slot connections, the drive shaft advantageously being secured against axial displacement on the drive element assigned to it.
  • a peripheral groove is expediently provided on the drive shaft, into which a diametrically divided disk, which is detachably attached to the second drive element associated with the drive shaft, engages.
  • the drive rollers of a triple continuous caster which are arranged on the underside of three adjacent strand guide tracks, are designated by 1, 2 and 3.
  • Each of the strands 7 drawn out on one of the three adjacent strand guide tracks with the center lines 4, 5, 6 is pulled out (for better transmission of the pull-out forces) by three drive rollers lying one behind the other in the axial direction of the strand.
  • the strand guideways are parallel to one another and are as close as possible to one another.
  • Counter rollers 8, 9, 10 are provided above each of the drive rollers, as shown schematically in FIG. 1.
  • Each of the drive rollers 1 to 3 is mounted on the drive roller stand 11 independently of the other adjacent drive rollers by means of two roller bearings 13 arranged closely on a cylindrical section 12 in contact with the strand.
  • the hollow drive rollers 1 and 3 of the two outer strand guideways are of the same design. They each have a tubular extension 14 projecting beyond the outer roller bearing 13, on which a drive element designed as a chain wheel 16 is mounted by means of a feather key 15 or a wedge.
  • This chain wheel 16 is supported by means of a spacer sleeve 17 against the outer roller bearing 13 and is secured on the extension 14 by means of a ring 18 against axial displacement, so that it forms a hollow structural unit with the respective drive roller 1 or 3.
  • the hollow drive roller 2 of the middle strand guide (with the center line 5) does not protrude beyond its roller bearings 13.
  • an extension 30 having an annular groove 29 is provided, into which an annular groove a split disc 31, which is releasably attached to the outer end face of the hollow sleeve 25, engages.
  • This disk 31 prevents the drive shaft 22 from moving axially.
  • a separate motor 32 is provided for driving each of the chain wheels 16, 16a, which is connected to the respectively assigned chain wheel 16a by means of a drive chain 33 via a drive shaft, at the end of which a chain wheel is also mounted.
  • the arrangement of the drive roller 3 with its sprocket 16, drive roller frame 11 and motor 32 shown in FIG. 2 is not part of the design according to the invention and is only intended to show the possibility of forming a triple continuous caster according to the invention with a double continuous caster.
  • the removal of a drive roller proceeds as follows: If, for example, the middle drive roller 2 is damaged and replaced, the split disk 31 is removed, the drive shaft 22 is axially displaced until it lies outside of this drive roller 2 in the axial direction, after which the bearing cover 34 is loosened Bearing 13, the drive roller 2 with its bearings 13 can be issued. No manipulations need to be carried out on the two adjacent drive rollers 1 and 3 when performing this work. If the middle drive roller is damaged, it is possible to continue the casting operation on the two outer strand guide tracks until the tundish or the ladle from which the tundish is supplied is emptied.
  • the drive roller 1 which is traversed by the drive shaft 22, is to be removed, it is only necessary to also axially move the drive shaft 22 after loosening and removing the split disk 31 until it is hollow from the drive roller and sprocket Assembly of this drive roller 1 is removed, whereupon the hollow assembly can be removed from the scaffold.
  • the middle drive roller 2 (and also the drive roller 3) can be left in the drive roller stand 11 in this case.
  • a driving roller stand 35 is shown for a quadruple continuous caster, in which all four driving rollers 1, 2, 1 ', 2' are arranged with axes aligned with one another, which results in a particularly short overall length of the driving roller stand 35 (in Strand extraction direction) results.
  • FIG. 5 and 6 show an embodiment of a driving roller stand 37 for a six-fold continuous casting installation, which can also be used for a triple continuous casting installation if only the driving rollers 1, 2, 38 or 1 lying on one side of the axis of symmetry 36 ', 2', 38 'omits.
  • Such a triple continuous caster has the advantage that the motors 32 are located on only one side of the continuous caster and yet two of the drive rollers 1, 2 and 1 ', 2' are arranged coaxially, so that the overall length of the drive roller stand in the direction of strand extraction can be kept short .
  • the drive roller 38 (or 38 ') is 37 in this drive roller stand designed the same as the roller 2.
  • a drive roller stand 41 shown in FIGS. 7 and 8
  • eight drive rollers 1, 2, 42, 43, T, 2 ', 42', 43 ' are provided for an eightfold continuous casting installation. If the traction rollers are omitted on one side of the axis of symmetry in FIG. 8, a traction roller structure is obtained for a quadruple continuous casting installation, in which all four drive motors are also located on only one side of the continuous casting installation.
  • four drive rollers 1, 2, 1 ', 2' and 42, 43, 42 ', 43' are aligned with each other, so that, viewed in the direction of strand extraction, the drive roller frame 41 has a very short overall length.
  • the drive rollers 42, 43 (or 42 ', 43'), as can be seen from FIG. 8, are designed in the same way as the drive rollers 1, and can also be removed individually.
  • the invention is not limited to the exemplary embodiments shown in the drawing, but can be modified in various ways.
  • the first drive roller 1 (FIG. 2) of the hollow assembly is overhung on the drive roller frame and a bearing 13 is provided on both sides of the drive unit mounted on the hollow assembly.
  • the center lines 4 and 5 of the strand guideways can be moved closer together by the bearing width of the bearing 13.
  • a further possibility of an expedient embodiment of the drive roller stand can consist in that two drive units are assigned to the second drive roller 2 (FIG. 2), one drive unit 16, as shown in FIG. 2, being provided and a further drive unit symmetrical to the center line 5 the other side of the strand guideways. If the drive roller 1 has to be removed, the drive shaft 22 is displaced until it engages with the multi-spline profile 23 in the multi-spline profile 20 provided on the drive roller 2 and the multi-spline profile 21 engages with a multi-spline profile which is provided on the further drive unit opposite.
  • This drive unit is coupled to its own drive motor. The drive roller 2 can therefore continue to be driven even if the drive roller 1 of the hollow structural unit is damaged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Continuous Casting (AREA)

Description

Die Erfindung betrifft ein Treibrollengerüst für Stranggießanlagen mit mindestens zwei nebeneinander angeordneten Strangführungen, insbesondere für Stahl-Knüppelgießanlagen, mit mindestens einer für jeden der Stränge vorgesehenen, separat angetriebenen Treibrolle, wobei eine erste Treibrolle mit einem ersten Antriebselement als hohle Baueinheit ausgebildet ist und eine mit einem zweiten Antriebselement versehene Antriebswelle einer zweiten, koaxial zur ersten Treibrolle angeordneten Treibrolle diese hohle Baueinheit durchsetzt, wobei die Antriebswelle sowohl mit dem zweiten Antriebselement als auch mit der zweiten Treibrolle mittels Kupplungen verbindbar ist, und wobei weiters jede Treibrolle für sich am Treibrollengerüst gelagert ist.The invention relates to a drive roller stand for continuous casting plants with at least two strand guides arranged next to one another, in particular for steel billet casting plants, with at least one separately driven drive roller provided for each of the strands, a first drive roller having a first drive element being designed as a hollow structural unit and one having a second drive element provided drive shaft of a second drive roller arranged coaxially to the first drive roller passes through this hollow structural unit, the drive shaft being connectable to the second drive element as well as to the second drive roller by means of couplings, and furthermore each drive roller being mounted separately on the drive roller frame.

Bei Mehrfach-Stranggießanlagen besteht das Problem, die Strangführungen für die einzelnen Stränge möglichst nahe nebeneinander anzuordnen, um die Größe des gemeinsamen, über sämtlichen Kokillen angeordneten Zwischengefäßes und damit die auftretenden Wärmeverluste möglichst gering zu halten. Auch soll eine Mehrfach-Stranggießanlage möglichst platzsparend gebaut werden können.In multiple continuous casting plants, there is the problem of arranging the strand guides for the individual strands as close as possible to one another in order to keep the size of the common intermediate vessel arranged above all the molds and thus the heat losses that occur as low as possible. A multiple continuous caster should also be able to be built to save space.

Ein Treibrollengerüst der eingangs beschriebenen Art ist aus der DE-A-1 483 664 bekannt. Bei diesem Gerüst ist zwischen der als hohle Baueinheit ausgebildeten ersten Treibrolle und der benachbarten zweiten Treibrolle eine Oldham-Kupplung angeordnet, welche Oldham-Kupplung die benachbarte Treibrolle mit der die hohle Baueinheit durchsetzenden Antriebswelle verbindet. Bedingt durch diese Kupplung lassen sich die einzelnen Stränge nicht eng benachbart anordnen. Dieses bekannte Treibrollengerüst weist daher quer zur Stranglängsrichtung eine breite Bauweise auf.A driving roller stand of the type described in the opening paragraph is known from DE-A-1 483 664. In this scaffold, an Oldham coupling is arranged between the first drive roller designed as a hollow assembly and the adjacent second drive roller, which Oldham coupling connects the adjacent drive roller with the drive shaft passing through the hollow assembly. Due to this coupling, the individual strands cannot be arranged in close proximity. This known drive roller stand therefore has a wide construction transverse to the longitudinal direction of the strand.

Ein Treibrollengerüst, bei dem eine platzsparende, eng benachbarte Anordnung der beiden Strangführungen verwirklicht ist, ist aus der DE-A-2 702 894 bekannt. Bei diesem Gerüst ist die Antriebswelle der zweiten Treibrolle mit dieser Treibrolle starr verbunden und in der hohlen Baueinheit der ersten Treibrolle drehbar gelagert. Daraus ergibt sich der Nachteil, daß ein Ausbau einer der Treibrollen unbedingt den Ausbau der anderen Treibrolle erfordert, so daß es auf keinen Fall möglich ist, an einer der beiden Strangführungen den Gießbetrieb aufrechtzuerhalten. Auch ist der Ausbau jeweils beider Treibrollen bei einem Schaden an lediglich einer der beiden Treibrollen umständlich und zeitaufwendig. Bei dem aus der DE-OS 2 702 894 bekannten Treibrollengerüst ist es außerdem erforderlich, zur Lagerung der Treibrollen mehrere unterschiedlich dimensionierte Wälzlager zu verwenden, wodurch sich die Notwendigkeit der Lagerhaltung dieser unterschiedlichen Ersatzteile ergibt.A drive roller stand in which a space-saving, closely adjacent arrangement of the two strand guides is realized is known from DE-A-2 702 894. In this frame, the drive shaft of the second drive roller is rigidly connected to this drive roller and rotatably mounted in the hollow structural unit of the first drive roller. This results in the disadvantage that removal of one of the drive rollers absolutely requires removal of the other drive roller, so that it is by no means possible to maintain the casting operation on one of the two strand guides. Also, the removal of each of the two drive rollers in the event of damage to only one of the two drive rollers is cumbersome and time-consuming. In the drive roller stand known from DE-OS 2 702 894, it is also necessary to use several differently dimensioned roller bearings for mounting the drive rollers, which results in the need to keep these different spare parts in stock.

Es ist aus der DE-AS 2 721 856 bekannt, bei einer Mehrfach-Stranggießanlage jeweils eine Antriebswelle von seitlich der Anlage vorgesehenen Antriebsmotoren bis unmittelbar zu jeder der an den Strangführungen vorgesehenen Treibrollen von außen reichen zu lassen und mittels eines unmittelbar neben der jeweiligen Strangführung angeordneten Kettenantriebes oder einer Kupplung mit der jeweiligen Treibrolle zu verbinden. Dies hat den Nachteil, daß die Strangführungen wegen der zwischen den Strangführungen liegenden Antriebselemente nicht mehr sehr eng benachbart angeordnet werden können und daß die zwischen den Strängen liegenden Kupplungen bzw. Antriebselemente der unmittelbaren Hitzeeinwirkung der Stränge ausgesetzt sind.It is known from DE-AS 2 721 856 to allow a drive shaft to extend from the outside of the drive motors provided on the side of the system to directly to each of the drive rollers provided on the strand guides in a multiple continuous casting installation and to be arranged directly next to the respective strand guide Chain drive or a coupling with the respective drive roller. This has the disadvantage that the strand guides can no longer be arranged very closely next to one another because of the drive elements lying between the strand guides and that the couplings or drive elements lying between the strands are exposed to the direct heat of the strands.

Eine weitere Möglichkeit der Anordnung von Treibrollen bei Mehrfach-Stranggießanlagen ist in der DE-OS 2 733 864 gezeigt, wobei jede der Treibrollen mittels einer Antriebswelle direkt verbunden ist. Dabei sind jedoch die Treibrollen nicht mehr koaxial angeordnet, sondern liegen in Strangausziehrichtung hintereinander. Dadurch ergibt sich eine größere Baulänge der Anlage.Another possibility for the arrangement of drive rollers in multiple continuous casting plants is shown in DE-OS 2 733 864, each of the drive rollers being connected directly by means of a drive shaft. However, the drive rollers are no longer arranged coaxially, but lie one behind the other in the direction of strand extraction. This results in a larger overall length of the system.

Die Erfindung bezweckt die Vermeidung der geschilderten Nachteile und Schwierigkeiten und stellt sich die Aufgabe, ein Treibrollengerüst der eingangs beschriebenen Art zu schaffen, welches eine sehr eng benachbarte Anordnung der Strangführungen ermöglicht, wobei die Strangführung in Strangausziehrichtung möglichst kurz ist und wobei es weiters nicht mehr erforderlich ist, mehrere Treibrollen auszubauen, wenn bloß eine beschädigt ist.The invention aims to avoid the disadvantages and difficulties described and has as its object to create a drive roller stand of the type described in the introduction, which enables a very closely adjacent arrangement of the strand guides, the strand guidance in the strand pull-out direction being as short as possible and wherein it is also no longer necessary is to remove multiple drive rollers if only one is damaged.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Antriebswelle sowohl mit der zweiten Treibrolle als auch mit dem zweiten Antriebselement unabhängig von der ersten Treibrolle außer und in Eingriff bringbar ist und gemeinsam mit den an ihr angeordneten Elementen der Kupplungen axial aus der am Treibrollengerüst verbleibenden hohlen Baueinheit der ersten Treibrolle unabhängig von der zweiten Treibrolle entfernbar bzw. in die hohle Baueinheit einsetzbar ist.This object is achieved in that the drive shaft with both the second drive roller and the second drive element independently of the first drive roller can be brought out and into engagement and together with the elements of the couplings arranged on it axially from the hollow structural unit remaining on the drive roller frame the first drive roller can be removed or inserted into the hollow structural unit independently of the second drive roller.

Eine bevorzugte Ausführungsform ist dadurch gekennzeichnet, daß die Kupplungen als Vielnutverbindungen ausgebildet sind, wobei vorteilhaft die Antriebswelle an dem ihr zugeordneten Antriebselement gegen axiales Verschieben gesichert ist.A preferred embodiment is characterized in that the couplings are designed as multi-slot connections, the drive shaft advantageously being secured against axial displacement on the drive element assigned to it.

Als Sicherung der Antriebswellen gegen Verschieben ist zweckmäßig an der Antriebswelle eine periphere Nut vorgesehen, in die eine diametral geteilte, an dem der Antriebswelle zugeordneten zweiten Antriebselement lösbar befestigte Scheibe eingreift.To secure the drive shafts against displacement, a peripheral groove is expediently provided on the drive shaft, into which a diametrically divided disk, which is detachably attached to the second drive element associated with the drive shaft, engages.

Es ist von besonderem Vorteil, wenn die Treibrollen mittels untereinander gleich dimensionierter Lager am Treibrollengerüst gelagert sind.It is particularly advantageous if the drive rollers are mounted on the drive roller frame by means of bearings of the same dimension.

Die Erfindung ist nachfolgend anhand der Zeichnung an mehreren Ausführungsformen näher erläutert, wobei

  • Fig. 1 eine Seitenansicht eines erfindungsgemäßen Treibrollengerüstes in schematischer Darstellung und
  • Fig. 2 eine Schnittdarstellung eines gemäß der Linie 11-11 geführten Schnittes zeigen. Die
  • Fig. 3 und 4 bzw. 5 und 6 bzw. 7 und 8 veranschaulichen in zu den Fig. 1 und 2 analogen Darstellungen weitere Ausführungsformen.
The invention is explained in more detail with reference to the drawing in several embodiments, wherein
  • Fig. 1 is a side view of a drive roller stand according to the invention in a schematic representation and
  • Fig. 2 show a sectional view of a section taken along the line 11-11. The
  • 3 and 4 or 5 and 6 or 7 and 8 illustrate further embodiments in representations analogous to FIGS. 1 and 2.

Mit 1, 2 und 3 sind die an der Unterseite von drei benachbarten Strangführungsbahnen angeordneten Treibrollen einer Dreifach-Stranggießanlage bezeichnet. Jeder der an einer der drei benachbarten Strangführungsbahnen mit den Mittellinien 4, 5, 6 ausgezogenen Stränge 7 wird (zwecks besserer Übertragung der Ausziehkräfte) durch drei in Achsrichtung des Stranges hintereinander liegende Treibrollen ausgezogen. Die Strangführungsbahnen sind zueinander parallel und liegen so eng wie möglich nebeneinander. Oberhalb jeder der Treibrollen sind, wie in Fig. 1 schematisch dargestellt, Gegenrollen 8, 9, 10 vorgesehen. Jede der Treibrollen 1 bis 3 ist für sich am Treibrollengerüst 11 unabhängig von den anderen benachbarten Treibrollen mittels zweier eng an einem mit dem Strang in Kontakt stehenden zylindrischen Abschnitt 12 angeordneter Wälzlager 13 gelagert. Die hohlen Treibrollen 1 und 3 der beiden äußeren Strangführungsbahnen sind gleich ausgebildet. Sie weisen jeweils eine über das äußere Wälzlager 13 hinausragende rohrartige Verlängerung 14 auf, an der mittels einer Paßfeder 15 oder eines Keiles ein als Kettenrad 16 ausgebildetes Antriebselement montiert ist. Dieses Kettenrad 16 stützt sich mittels einer Distanzhülse 17 gegen das äußere Wälzlager 13 und ist an der Verlängerung 14 mittels eines Ringes 18 gegen axiales Verschieben gesichert, so daß es mit der jeweiligen Treibrolle 1 bzw. 3 eine hohle Baueinheit bildet. Die hohle Treibrolle 2 der mittleren Strangführung (mit der Mittellinie 5) ragt nicht über ihre Wälzlager 13 hinaus. Sie weist im Hohlraum 19 ein Vielkeilprofil 20 auf, in welches ein Vielkeilprofil 21 einer Antriebswelle 22, die durch die hohle Baueinheit der Treibrolle 1 koaxial nach außen ragt, eingreift. Diese Antriebswelle 22 weist an ihrem äußeren Ende ebenfalls ein Vielkeilprofil 23 auf, welches mit einem Vielkeilprofil 24 einer Hülse 25 zusammenwirkt. Diese Hülse ist ebenfalls mittels zweier Wälzlager 26 am Treibrollengerüst 11 gelagert und trägt zwischen diesen Wälzlagern 26 ein als Kettenrad 16a ausgebildetes Antriebselement, welches mittels einer Paßfeder 15 oder eines Keiles an der Hülse 25 drehfest montiert ist. Sämtliche Wälzlager 13 und 26 sind nach außen hin mittels eines mit einer Dichtung 27 versehenen Deckels 28 geschützt und mit jeweils einem Lagerdeckel am Treibrollengerüst fixiert. Sämtliche Lager 13, 26 weisen gleiche Dimensionen auf.The drive rollers of a triple continuous caster, which are arranged on the underside of three adjacent strand guide tracks, are designated by 1, 2 and 3. Each of the strands 7 drawn out on one of the three adjacent strand guide tracks with the center lines 4, 5, 6 is pulled out (for better transmission of the pull-out forces) by three drive rollers lying one behind the other in the axial direction of the strand. The strand guideways are parallel to one another and are as close as possible to one another. Counter rollers 8, 9, 10 are provided above each of the drive rollers, as shown schematically in FIG. 1. Each of the drive rollers 1 to 3 is mounted on the drive roller stand 11 independently of the other adjacent drive rollers by means of two roller bearings 13 arranged closely on a cylindrical section 12 in contact with the strand. The hollow drive rollers 1 and 3 of the two outer strand guideways are of the same design. They each have a tubular extension 14 projecting beyond the outer roller bearing 13, on which a drive element designed as a chain wheel 16 is mounted by means of a feather key 15 or a wedge. This chain wheel 16 is supported by means of a spacer sleeve 17 against the outer roller bearing 13 and is secured on the extension 14 by means of a ring 18 against axial displacement, so that it forms a hollow structural unit with the respective drive roller 1 or 3. The hollow drive roller 2 of the middle strand guide (with the center line 5) does not protrude beyond its roller bearings 13. It has a multi-spline profile 20 in the cavity 19, in which a multi-spline profile 21 of a drive shaft 22, which projects coaxially outwards through the hollow structural unit of the drive roller 1, engages. This drive shaft 22 also has a multi-spline profile 23 at its outer end, which cooperates with a multi-spline profile 24 of a sleeve 25. This sleeve is also mounted on the drive roller frame 11 by means of two roller bearings 26 and carries between these roller bearings 26 a drive element designed as a chain wheel 16a, which is mounted on the sleeve 25 in a rotationally fixed manner by means of a feather key 15 or a wedge. All rolling bearings 13 and 26 are protected from the outside by means of a cover 28 provided with a seal 27 and fixed to the drive roller frame with a respective bearing cover. All bearings 13, 26 have the same dimensions.

An dem äußeren Ende der Antriebswelle 22 ist eine eine Ringnut 29 aufweisende Verlängerung 30 vorgesehen, in welche Ringnut eine geteilt ausgebildete Scheibe 31, die an der äußeren Stirnseite der hohlen Hülse 25 lösbar befestigt ist, eingreift. Durch diese Scheibe 31 wird die Antriebswelle 22 gehindert, sich axial zu verschieben.At the outer end of the drive shaft 22, an extension 30 having an annular groove 29 is provided, into which an annular groove a split disc 31, which is releasably attached to the outer end face of the hollow sleeve 25, engages. This disk 31 prevents the drive shaft 22 from moving axially.

Zum Antrieb jedes der Kettenräder 16, 16a ist jeweils ein eigener Motor 32 vorgesehen, der über eine Antriebswelle, an deren Ende ebenfalls ein Kettenrad montiert ist, mittels einer Antriebskette 33 mit dem jeweils zugeordneten Kettenrad 16a verbunden ist.A separate motor 32 is provided for driving each of the chain wheels 16, 16a, which is connected to the respectively assigned chain wheel 16a by means of a drive chain 33 via a drive shaft, at the end of which a chain wheel is also mounted.

Die in Fig. 2 dargestellte Anordnung der Treibrolle 3 mit ihrem Kettenrad 16, Treibrollengerüst 11 und Motor 32 gehört nicht zur erfindungsgemäßen Ausbildung und soll nur die Möglichkeit aufzeigen, wie mit einer Zweifach-Stranggießanlage nach der Erfindung eine Dreifach-Stranggießanlage ausgebildet werden kann.The arrangement of the drive roller 3 with its sprocket 16, drive roller frame 11 and motor 32 shown in FIG. 2 is not part of the design according to the invention and is only intended to show the possibility of forming a triple continuous caster according to the invention with a double continuous caster.

Der Ausbau einer Treibrolle geht folgendermaßen vor sich: Ist beispielsweise die mittlere Treibrolle 2 beschädigt und auszutauschen, so wird die geteilte Scheibe 31 entfernt, die Antriebswelle 22 axial verschoben, bis sie in Achsrichtung außerhalb dieser Treibrolle 2 liegt, worauf nach Lösen der Lagerdeckel 34 der Lager 13 die Treibrolle 2 mit ihren Lagern 13 herausgegeben werden kann. An den beiden benachbarten Treibrollen 1 und 3 brauchen bei Durchführung dieser Arbeiten keinerlei Manipulationen durchgeführt werden. Es ist möglich, bei einem Schaden an der mittleren Treibrolle den Gießbetrieb an den beiden äußeren Strangführungsbahnen weiter aufrecht zu halten, bis das Zwischengefäß bzw. die Gießpfanne, aus der das Zwischengefäß versorgt wird, geleert ist.The removal of a drive roller proceeds as follows: If, for example, the middle drive roller 2 is damaged and replaced, the split disk 31 is removed, the drive shaft 22 is axially displaced until it lies outside of this drive roller 2 in the axial direction, after which the bearing cover 34 is loosened Bearing 13, the drive roller 2 with its bearings 13 can be issued. No manipulations need to be carried out on the two adjacent drive rollers 1 and 3 when performing this work. If the middle drive roller is damaged, it is possible to continue the casting operation on the two outer strand guide tracks until the tundish or the ladle from which the tundish is supplied is emptied.

Soll die Treibrolle 1, die von der Antriebswelle 22 durchsetzt wird, ausgebaut werden, so ist es lediglich notwendig, die Antriebswelle 22 ebenfalls nach Lösen und Entfernen der geteilten Scheibe 31 axial so weit zu verschieben, bis diese aus der aus Treibrolle und Kettenrad bestehenden hohlen Baueinheit dieser Treibrolle 1 entfernt ist, worauf die hohle Baueinheit aus dem Gerüst ausgebaut werden kann. Die mittlere Treibrolle 2 (und auch die Treibrolle 3) kann in diesem Fall im Treibrollengerüst 11 belassen werden.If the drive roller 1, which is traversed by the drive shaft 22, is to be removed, it is only necessary to also axially move the drive shaft 22 after loosening and removing the split disk 31 until it is hollow from the drive roller and sprocket Assembly of this drive roller 1 is removed, whereupon the hollow assembly can be removed from the scaffold. The middle drive roller 2 (and also the drive roller 3) can be left in the drive roller stand 11 in this case.

In den Fig. 3 und 4 ist ein Treibrollengerüst 35 für eine Vierfach-Stranggießanlage gezeigt, bei der alle vier Treibrollen 1, 2, 1', 2' mit zueinander fluchtenden Achsen angeordnet sind, wodurch sich eine besonders kurze Baulänge des Treibrollengerüstes 35 (in Strangausziehrichtung) ergibt.3 and 4, a driving roller stand 35 is shown for a quadruple continuous caster, in which all four driving rollers 1, 2, 1 ', 2' are arranged with axes aligned with one another, which results in a particularly short overall length of the driving roller stand 35 (in Strand extraction direction) results.

In den Fig. 5 und 6 ist eine Ausführungsform eines Treibrollengerüstes 37 für eine Sechsfach-Stranggießanlage dargestellt, die auch für eine Deifach-Stranggießanlage Verwendung finden kann, wenn man nur die an einer Seite der Symmetrieachse 36 liegenden Treibrollen 1, 2, 38 oder 1', 2', 38' wegläßt. Eine solche Dreifach-Stranggießanlage hat den Vorteil, daß die Motoren 32 an nur einer Seite der Stranggießanlage liegen und dennoch zwei derTreibrollen 1, 2 bzw. 1', 2' koaxial angeordnet sind, so daß die Baulänge des Treibrollengerüstes in Strangausziehrichtung kurz gehalten werden kann. Die Treibrolle 38 (bzw. 38') ist bei diesem Treibrollengerüst 37 gleich gestaltet wie die Rolle 2. Sie ist ebenfalls über eine Antriebswelle 39 mit einem Kettenrad 40 verbunden, so daß bei einem Schaden am Kettenrad 40 nicht auch die Treibrolle 38 bzw. umgekehrt bei einem Schaden an der Treibrolle 38 nicht das Kettenrad 40 ausgebaut werden muß.5 and 6 show an embodiment of a driving roller stand 37 for a six-fold continuous casting installation, which can also be used for a triple continuous casting installation if only the driving rollers 1, 2, 38 or 1 lying on one side of the axis of symmetry 36 ', 2', 38 'omits. Such a triple continuous caster has the advantage that the motors 32 are located on only one side of the continuous caster and yet two of the drive rollers 1, 2 and 1 ', 2' are arranged coaxially, so that the overall length of the drive roller stand in the direction of strand extraction can be kept short . The drive roller 38 (or 38 ') is 37 in this drive roller stand designed the same as the roller 2. It is also connected via a drive shaft 39 to a sprocket 40, so that if the sprocket 40 is damaged, the drive roller 38 or vice versa if the drive roller 38 is damaged, the sprocket 40 does not have to be removed .

Bei der in den Fig. 7 und 8 dargestellten Ausführungsform eines Treibrollengerüstes 41 sind acht Treibrollen 1, 2,42, 43, T, 2', 42', 43' für eine Achtfach-Stranggießanlage vorgesehen. Bei Weglassen der Treibrollen an einer Seite der Symmetrieachse der Fig. 8 ergibt sich ein Treibrollengerüst für eine Vierfach-Stranggießanlage, bei der ebenfalls alle vier Antriebsmotoren an nur einer einzigen Seite der Stranggießanlage liegen. Wie aus Fig. 8 ersichtlich, fluchten jeweils vier Treibrollen 1, 2, 1' , 2' υnd 42, 43, 42', 43' miteinander, so daß sich, in Strangausziehrichtung gesehen, eine sehr kurze Baulänge des Treibrollengerüstes 41 ergibt. Die Treibrollen 42, 43 (bzw. 42', 43') sind, wie aus Fig. 8 ersichtlich ist, in gleicher Weise gestaltet wie die Treibrollen 1, und ebenfalls einzeln ausbaubar.In the embodiment of a drive roller stand 41 shown in FIGS. 7 and 8, eight drive rollers 1, 2, 42, 43, T, 2 ', 42', 43 'are provided for an eightfold continuous casting installation. If the traction rollers are omitted on one side of the axis of symmetry in FIG. 8, a traction roller structure is obtained for a quadruple continuous casting installation, in which all four drive motors are also located on only one side of the continuous casting installation. As can be seen from FIG. 8, four drive rollers 1, 2, 1 ', 2' and 42, 43, 42 ', 43' are aligned with each other, so that, viewed in the direction of strand extraction, the drive roller frame 41 has a very short overall length. The drive rollers 42, 43 (or 42 ', 43'), as can be seen from FIG. 8, are designed in the same way as the drive rollers 1, and can also be removed individually.

Die Erfindung ist nicht auf die in der Zeichnung dargestellten Ausführungsbeispiele beschränkt, sondern kann in verschiedener Hinsicht modifiziert werden. Beispielsweise kann es für besonders eng benachbarte Strangführungen von Vorteil sein, wenn die erste Treibrolle 1 (Fig. 2) der hohlen Baueinheit am Treibrollengerüst fliegend gelagert ist und beiderseits der an der hohlen Baueinheit montierten Antriebseinheit ein Lager 13 vorgesehen ist. Dadurch können die Mittellinien 4 und 5 der Strangführungsbahnen um die Lagerbreite des Lagers 13 näher zusammengerückt werden.The invention is not limited to the exemplary embodiments shown in the drawing, but can be modified in various ways. For example, for particularly closely adjacent strand guides, it may be advantageous if the first drive roller 1 (FIG. 2) of the hollow assembly is overhung on the drive roller frame and a bearing 13 is provided on both sides of the drive unit mounted on the hollow assembly. As a result, the center lines 4 and 5 of the strand guideways can be moved closer together by the bearing width of the bearing 13.

Eine weitere Möglichkeit einer zweckmäßigen Ausgestaltung des Treibrollengerüstes kann darin bestehen, daß der zweiten Treibrolle 2 (Fig. 2) zwei Antriebseinheiten zugeordnet sind, wobei eine Antriebseinheit 16, wie in Fig. 2 dargestellt, vorgesehen ist und eine weitere Antriebseinheit symmetrisch zur Mittellinie 5 an der anderen Seite der Strangführungsbahnen liegt. Wenn die Treibrolle 1 ausgebaut werden muß, wird die Antriebswelle 22 verschoben bis sie mit dem Vielkeilprofil 23 in das an der Treibrolle 2 vorgesehene Vielkeilprofil 20 eingreift und das Vielkeilprofil 21 mit einem Vielkeilprofil, welches an der weiteren gegenüberliegenden Antriebseinheit vorgesehen ist, in Eingriff gelangt. Diese Antriebseinheit ist mit einem eigenen Antriebsmotor gekoppelt. Es kann daher die Treibrolle 2 auch bei einem Schaden an der Treibrolle 1 der hohlen Baueinheit weiter angetrieben werden.A further possibility of an expedient embodiment of the drive roller stand can consist in that two drive units are assigned to the second drive roller 2 (FIG. 2), one drive unit 16, as shown in FIG. 2, being provided and a further drive unit symmetrical to the center line 5 the other side of the strand guideways. If the drive roller 1 has to be removed, the drive shaft 22 is displaced until it engages with the multi-spline profile 23 in the multi-spline profile 20 provided on the drive roller 2 and the multi-spline profile 21 engages with a multi-spline profile which is provided on the further drive unit opposite. This drive unit is coupled to its own drive motor. The drive roller 2 can therefore continue to be driven even if the drive roller 1 of the hollow structural unit is damaged.

Claims (5)

1. A driving roller stand for continuous casting plants with at least two adjacently arranged strand guides, in particular for steel-billet casting plants, comprising at least one separately driven driving roller (1, 2; 1', 2'; 42, 43; 42', 43') provided for each of the strands, a first driving roller (1, 1'; 42, 42') being designed as a hollow structural unit with a first driving element (16,16', 40,40'), and a driving shaft (22, 22') provided with a second driving element (16a, 16'a; 40a, 40'a) of a second driving roller (2, 2'; 43, 43') arranged coaxially with the first driving roller penetrating this hollow structural unit, wherein the driving shaft (22, 22') is connectable both with the second driving element (16, 16'; 40a, 40'a) and with the second driving roller (2, 2'; 43a, 43'a) by means of couplings (20, 21, 23, 24) and wherein, furthermore, each driving roller (1, 2; 1', 2'; 42, 43; 42', 43') is separately journalled on the driving roller stand (11, 35, 37, 41), characterized in that the driving shaft (22, 22') is engageable in, and out of, both the second driving roller (2, 2'; 43, 43') and the second driving element (16, 16'; 40a, 40'a) independently of the first driving roller (1, 1'; 42, 42'), and commonly with the elements arranged on it of the couplings (21, 23), is axially removable from, and insertable into, the hollow structural unit of the first driving roller (1, 1'; 42, 42') remaining on the driving roller stand (11, 35, 37, 41) independently of the second driving roller (2,2'; 43, 43').
2. A stand according to claim 1, characterized in that the couplings are desinged as multi- groove connections (20, 21, 23, 24).
3. A stand according to claim 1 or 2, characterized in that the driving shaft (22) is secured against axial displacement on the driving element (16a) allocated to it.
4. A stand according to claim 3, characterized in that a peripheral groove (29) is provoided on the driving shaft (22), in which a diametrically divided disc (31) angages, which is detachably fastened to the second driving element (16) allocated to the driving shaft (22) (Fig. 2).
5. A stand according to claims 1 to 4, characterized in that the driving rollers (1, 2; 1', 2'; 42, 43; 42', 43') are journalled on the driving roller stand (11, 35, 37, 41) by means of equally dimensioned bearings (13).
EP81890062A 1980-04-15 1981-04-09 A driving roller stand for continuous casting plants Expired EP0038320B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2026/80 1980-04-15
AT0202680A AT365105B (en) 1980-04-15 1980-04-15 DRIVE ROLLER SCREENS FOR CONTINUOUS CASTING PLANTS

Publications (3)

Publication Number Publication Date
EP0038320A2 EP0038320A2 (en) 1981-10-21
EP0038320A3 EP0038320A3 (en) 1981-12-09
EP0038320B1 true EP0038320B1 (en) 1984-05-16

Family

ID=3526198

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Application Number Title Priority Date Filing Date
EP81890062A Expired EP0038320B1 (en) 1980-04-15 1981-04-09 A driving roller stand for continuous casting plants

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US (1) US4411304A (en)
EP (1) EP0038320B1 (en)
JP (1) JPS56151150A (en)
AT (1) AT365105B (en)
CA (1) CA1174828A (en)
DE (1) DE3163584D1 (en)
ES (1) ES8205598A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239157A (en) * 1989-12-19 1991-06-26 Reekie Mfg Ltd Roller separating tables for root crop harvesters
US5928122A (en) * 1997-10-20 1999-07-27 Sms Concast Division Of Sms Schloemann-Siemag Inc. Split roll for continuous casting
MX2011000634A (en) * 2010-01-18 2011-11-04 Basf Se Strand guide assembly and method of controlling a flow of molten thermoplastic.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT233189B (en) * 1961-11-24 1964-04-25 Mannesmann Ag Strand transport device in multiple continuous casting plants
FR1436166A (en) * 1964-04-03 1966-04-22 Roller drive device for continuous casting installation, in particular for installation with several simultaneous casting lines
DE1483558A1 (en) * 1965-09-25 1969-10-02 Demag Ag Transport and straightening machine for a continuous metal caster
US3965975A (en) * 1974-08-21 1976-06-29 Stratford Engineering Corporation Baffling arrangements for contactors
DE2511913A1 (en) * 1975-03-19 1976-09-30 Sack Gmbh Maschf CONTINUOUS CASTING PLANT FOR SLABS
JPS5290421A (en) * 1976-01-27 1977-07-29 Ishikawajima Harima Heavy Ind Pinch roll apparatus in poly strand continuous casting equipment
CH603281A5 (en) * 1976-05-19 1978-08-15 Concast Ag

Also Published As

Publication number Publication date
EP0038320A2 (en) 1981-10-21
JPS56151150A (en) 1981-11-24
EP0038320A3 (en) 1981-12-09
US4411304A (en) 1983-10-25
AT365105B (en) 1981-12-10
ATA202680A (en) 1981-05-15
DE3163584D1 (en) 1984-06-20
CA1174828A (en) 1984-09-25
ES501079A0 (en) 1982-06-16
ES8205598A1 (en) 1982-06-16

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