EP0076248B1 - Supporting and guiding arc for cast strands - Google Patents

Supporting and guiding arc for cast strands Download PDF

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Publication number
EP0076248B1
EP0076248B1 EP82890117A EP82890117A EP0076248B1 EP 0076248 B1 EP0076248 B1 EP 0076248B1 EP 82890117 A EP82890117 A EP 82890117A EP 82890117 A EP82890117 A EP 82890117A EP 0076248 B1 EP0076248 B1 EP 0076248B1
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EP
European Patent Office
Prior art keywords
supporting
guiding arc
carriers
arcuate longitudinal
segments
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
EP82890117A
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German (de)
French (fr)
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EP0076248A1 (en
Inventor
Aktiengesellschaft Voest-Alpine
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Voestalpine AG
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Voestalpine AG
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Publication of EP0076248A1 publication Critical patent/EP0076248A1/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
    • B22D11/1282—Vertical casting and curving the cast stock to the horizontal
    • 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
    • B22D11/1285—Segment changing devices for supporting or guiding frames

Definitions

  • the invention relates to a support and guide arch for cast strands, in particular for slab cast strands, with the strand on opposite sides supporting roller conveyors, the rollers of which are mounted on integral, longitudinal arch supports which are continuous over the entire length of the guide arch, the longitudinal arch supports being spaced apart along the longitudinal arch members engaging cross-members arranged opposite one another in pairs, which are connected by means of tie rods.
  • a support and guide arch of this type is known from AT-B-343.303, AT-B-290.750 and AT-B-343.831.
  • Such a one-piece supporting and guiding arch has the advantage over a guiding arch composed of a plurality of segments arranged one behind the other, the segments of which are mounted individually on the foundation, that the transitions which result from segment to segment and which must be exactly aligned with one another are avoided , Through the use of continuous, one-piece longitudinal rails, the rollers lie on predetermined curved paths without discontinuities.
  • the invention aims at avoiding these difficulties and has as its object to create a support and guide arch of the type described in the opening paragraph which, while maintaining the advantages of the known support and guide arches equipped with continuous arch longitudinal supports, permits a roll change in which only a relatively small amount Weights and small components have to be manipulated, as is the case with support and guide arches composed of segments arranged one behind the other.
  • the advantages of the guide arches composed of segments arranged one behind the other should therefore be combined in one construction with the advantages of the guide arches equipped with continuous longitudinal arches.
  • the arrangement of the two longitudinal arch members laterally to the ends of the rollers makes it possible to move the support segments between and along the longitudinal arch members (for the purpose of removal and installation).
  • a free space extending over the entire length of the support and guide arch is provided between the arch side members, the support segments and the cross members, through which the support segments together with built-in rollers can be moved along the side members after detaching them from the side members, which means that
  • the advantage is that the support segments are not removed in sequence, but in any order from the support and guide arch or can be built into the support and guide arch.
  • a single middle segment can also be removed and installed without the other segments having to be detached from the support and guide bend.
  • the support segments are expediently detachably fastened to the longitudinal supports by means of quick-release fasteners, wherein the quick-release fastener is advantageously designed as a bolt which can be retracted into the support segments, preferably hydraulically retractable.
  • the support segments are expediently formed by roller mounts or longitudinal supports carrying roller bearings, which are connected by preferably hollow tubular supports extending parallel to the rollers, the retractable bolts being slidably mounted in the hollow supports.
  • the quick-release fastener is designed as a rotatable slotted bushing inserted into the longitudinal side members of the arch and into this bushing insertable through its slot, fastening bolts fastened to the support segment.
  • a gripping carriage guided along the longitudinal rails of the arch can be moved in the free spaces inside and outside the arch, on which gripping devices are provided for gripping the support segments.
  • a transport carriage accommodating the gripping carriage is guided.
  • the gripping carriage expediently has pivot arms which can be brought into and out of engagement with a support segment, the pivot arms advantageously being designed as angle levers.
  • guides for the support segments are provided on the bow side members.
  • guide rails are provided for guiding the gripping carriage along the sheet longitudinal members.
  • FIG. 1 shows a schematically shown, in the arch plane through the support and guide arch section.
  • FIG. 2 illustrates a section along the line 11-11 of FIG. 1.
  • FIGS. 3 to 5 show a further embodiment in an illustration analogous to FIGS. 1 and 2, FIG. 3 being a sectional illustration of a section made in two planes , etc. according to lines 111-111 and III'-III 'of Fig. 4; 5 is a side view.
  • a cast strand 1 is pulled out of a mold, not shown, and bent in a bending zone, not shown, arranged below the mold. Subsequently, the strand is guided between an inner roller conveyor 2 and an outer roller conveyor 3 of a support and guide sheet from almost the vertical to almost the horizontal. In the direction of pulling out the strand, a guide zone is arranged downstream of the guide arch, in which the strand is straightened again.
  • Each of the roller tracks 2, 3 has two sheet longitudinal members 4, 5 which are continuous over the entire length of the support and guide sheet and are each arranged at a distance 6 which is greater than the length 7 of the rollers and to the side of the roller ends 8.
  • the parallel parallel longitudinal beams 9, 10 are arranged at intervals from each other, two mutually opposite cross beams are tensioned against each other by means of tie rods 11 to absorb the ferrostatic forces.
  • the tie rods 11 also keep the roller conveyors 2 and 3 at a certain distance which corresponds to the thickness 12 of the strand 1 to be cast.
  • the latticework or truss formed from the cross members and longitudinal members of the arch is at least two points along its longitudinal extent on the foundation, etc. either via a floating and a fixed bearing or a fixed bearing and several floating bearings (for example according to AT-B-343.831), which is not shown in the drawing.
  • the sheet longitudinal members 4 of the inner roller conveyor 2 are movably mounted on the cross members 9 by means of sliding blocks 13 in order to enable the setting of different strand thicknesses.
  • the cross members 9 of the inner roller conveyor 2 are moved along the tie rods 11 and the sheet longitudinal members are elastically deformed, as is described and shown, for example, in AT-B-343.303.
  • Support segments 14 which are arranged one behind the other, are inserted between the sheet longitudinal members 4 and 5 of each of the roller conveyors 2 and 3 and are detachably fastened to the sheet longitudinal members.
  • Each of the support segments 14 carries, via roller holders 15, a plurality of rollers 16 and 17, respectively, assigned to a roller conveyor.
  • Each support segment is formed from longitudinal members 18 carrying the roller holders 15, the rollers being supported several times over their longitudinal extent. These longitudinal beams 18 are penetrated by beams 19 extending parallel to the rollers.
  • These supports are tubular and have bolts 21 inserted into their cavity 20 at their ends.
  • These bolts are displaceable in the direction of the longitudinal axis of the supports 19 by means of hydraulic cylinders 22, so that they can be brought from a position projecting from the supports, as illustrated in FIG. 2, into a position in which they are entirely in the supports have moved in or withdrawn.
  • the support segments 14 are quickly and easily detachably connected to the longitudinal members 4, 5, the ends of the bolts 21 being insertable into bores 23 of the longitudinal members or being removable from the bores.
  • a free space 24 and 25 which extends over the entire length of the support and guide arch, through which the support segments 14 together with the installed rollers after loosening the longitudinal members 4 and 5 are movable along the longitudinal members.
  • a support segment with dash-dotted lines is shown, which is shifted into the free space 24.
  • the direction of removal is illustrated by arrow 26.
  • guide devices and traction means are provided, for example rails and cable or chain hoists.
  • the expansion of an outer support segment along the space 25 is also illustrated in FIGS. 1 and 2 with dash-dotted lines.
  • Support segments lying opposite one another are not in direct connection with one another, so that the arrangement of the support segments can be chosen freely, i.e. the support segments do not have to be exactly opposite one another, but the outer support segments can be arranged offset to the inner support segments in the longitudinal direction of the support and guide arch.
  • the attachment of the support segments 14 to the arch side members 4 is midified here; it consists of mounting bolts 27 inserted into the support segments, which project laterally from the support segments.
  • Rotatable bushings 28, which receive the mounting bolts 27, are inserted into the sheet longitudinal members 4 and 5.
  • These bushings 28 each have a slot 29 through which the mounting bolts can come out with a flattened end piece 30.
  • the bushings can be turned from the holding position shown on the left in FIG. 3 to the expansion position shown on the right in FIG. 3 with the aid of a pressure medium cylinder 31 mounted on the side of the sheet longitudinal members.
  • the sockets used for a support segment 14 for holding are connected to one another by means of levers 32, 33 and a linkage 34, so that they are actuated synchronously with the aid of the pressure medium cylinder 31 can.
  • a gripping carriage 35 is provided in the embodiment shown in FIGS. 3 and 4, which in the free space 24 formed by the longitudinal arch members 4 and 5, the support segments 14 and the cross members 9 and 10, 25 can be moved along guide rails 36.
  • the gripping carriage rolls in these guide rails with laterally projecting rollers, not shown.
  • the gripping carriage 35 has two side cheeks 37, which are directed parallel to the sheet longitudinal members 4 and 5 and come to lie just next to them and which are connected to one another by cross struts 38 to form a cage.
  • two angle levers 39 are pivotally mounted about an axis 40 parallel to the roller axes.
  • a pressure medium cylinder 41 is used to carry out the pivoting movement.
  • each of these levers can be hooked into a recess 43 arranged in the plane of symmetry of a support segment 14. This is done by actuating a pressure medium cylinder 44, which connects the two angle levers 39 to one another.
  • This pressure medium cylinder 44 allows the two angle levers to be pulled towards one another in the direction of the pivot axis 40 or to be spread apart, as a result of which a set of screws 45 arranged on the angle levers 39 at their ends 42 can be brought into and out of engagement with the recess 43 of the support segment.
  • the angle levers 39 preferably spring against one another and are spread apart by the pressure fluid cytinder 44 with elastic deformation. In Fig. 4 the position is drawn in which a support segment is clamped between the angle levers, i.e. clutched laterally and held by the extensions of the angle lever.
  • the support segments 14 are provided guides 46 which align the support segments 14 when inserted into the system, so that the newly inserted support segment with its mounting bolts 27 can be inserted exactly through the slots 29 into the sockets 28.
  • the gripping carriage 35 can be moved along the guide rails 36 by means of a cable or chain hoist (not shown in more detail).
  • dash-dotted lines a support segment 14 is drawn, which was brought into the free space 24 formed by the sheet longitudinal members, the support segments and the cross members with the aid of the angle lever 39 of the gripping carriage, also shown in dash-dotted lines. As soon as the support segment is in this position, it can be moved out of the system by moving the gripping carriage along the longitudinal arch members 4 or 5.
  • a transport carriage 50 is located below the working platform 47 of the continuous caster at the level of the strand section following the mold 48, which is formed as a bending zone 49 in the case of straight molds, which is illustrated with dash-dotted lines in FIG. 5 guided on rails 51, which receives two gripping wagons 35.
  • this transport carriage has two guide rails 52 aligned with the guide rails 36.
  • Each of the two gripping carriages 35 is assigned to one of the free spaces 24 and 25. Cable or chain hoists 53 are installed on the transport carriage 50, by means of which the gripping carriage 35 can be lowered into the support and guide arch or pulled out of it.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Continuous Casting (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Description

Die Erfindung betrifft einen Stütz- und Führungsbogen für Gußtränge, insbesondere für Brammengußstränge, mit den Strang an einander gegenüberliegenden Seiten stützenden Rollenbahnen, deren Rollen an einstückigen, über die gesamte Länge des Führungsbogens durchgehenden Bogenlängsträgern gelagert sind, wobei entlang der Bogenlängsträger in Abständen voneinander die Bogenlängsträger hintergreifende, einander paarweise gegenüberliegende Querträger angeordnet sind, die mittels Zugankern verbunden sind.The invention relates to a support and guide arch for cast strands, in particular for slab cast strands, with the strand on opposite sides supporting roller conveyors, the rollers of which are mounted on integral, longitudinal arch supports which are continuous over the entire length of the guide arch, the longitudinal arch supports being spaced apart along the longitudinal arch members engaging cross-members arranged opposite one another in pairs, which are connected by means of tie rods.

Ein Stütz- und Führungsbogen dieser Art ist aus der AT-B-343.303, der AT-B-290.750 und der AT-B-343.831 bekannt.A support and guide arch of this type is known from AT-B-343.303, AT-B-290.750 and AT-B-343.831.

Ein solcher einteiliger Stütz- und Führungsbogen hat gegenüber einem aus einer Mehrzahl von hintereinander angeordneten Segmenten zusammengesetzten Führungsbogen, dessen Segmente einzeln am Fundament gelagert sind, den Vorteil, daß die sich von Segment zu Segment ergebenden Übergänge, die genau gegeneinander ausgerichtet werden müssen, vermieden werden, Durch die Verwendung durchgehender, einstückiger Bogenlängsträger liegen die Rollen auf vorgegebenen Kurvenbahnen ohne Unstetigkeitstellen.Such a one-piece supporting and guiding arch has the advantage over a guiding arch composed of a plurality of segments arranged one behind the other, the segments of which are mounted individually on the foundation, that the transitions which result from segment to segment and which must be exactly aligned with one another are avoided , Through the use of continuous, one-piece longitudinal rails, the rollers lie on predetermined curved paths without discontinuities.

Bei Einplanung von Stranggießanlagen in bestehende Hallen kann unter Umständen die Manipulation des durchgehenden Gießbogens Schwierigkeiten bereiten, da es beispielsweise beim Austausch von Rollen notwendig sein kann, den Innenbogen vom Außenbogen zu lösen.When planning continuous casting plants in existing halls, it may be difficult to manipulate the continuous casting curve, since it may be necessary, for example, to replace the inner curve from the outer curve when replacing rollers.

Die Erfindung bezweckt die Vermeidung dieser Schwierigkeiten und stellt sich die Aufgabe, einen Stütz- und Führungsbogen der eingangs beschriebenen Art zu schaffen, der unter Beibehaltung der Vorteile der bekannten, mit durchgehenden Bogeniängsträgern ausgestatteten Stütz- und Führungsbögen einen Rollenwechsel gestattet, bei dem nur verhältnismäßig geringe Gewichte und kleine Bauteile manipuliert werden müssen, so wie dies bei aus hintereinander angeordneten Segmenten zusammengesetzten Stütz- und Führungsbögen der Fall ist. Es sollen also die Vorteile der aus hintereinander angeordneten Segmenten zusammengesetzten Führungsbögen mit den Vorteilen der mit durchgehenden Bogenlängsträgern ausgestatteten Führungsbögen in einer Konstruktion vereinigt werden.The invention aims at avoiding these difficulties and has as its object to create a support and guide arch of the type described in the opening paragraph which, while maintaining the advantages of the known support and guide arches equipped with continuous arch longitudinal supports, permits a roll change in which only a relatively small amount Weights and small components have to be manipulated, as is the case with support and guide arches composed of segments arranged one behind the other. The advantages of the guide arches composed of segments arranged one behind the other should therefore be combined in one construction with the advantages of the guide arches equipped with continuous longitudinal arches.

Diese Aufgabe wird durch die Kombination der folgenden Merkmale gelöst,

  • - daß jede Rollenbahn nur zwei Bogenlängsträger aufweist, die in einem Abstand größer als die Längserstreckung der Rollen seitlich der Rollenenden angeordnet sind,
  • - daß eine Mehrzahl von Stützsegmenten jeder Rollenbahn zwishen den ihr zugeordneten Bogenlängsträgern eingesetzt ist,
  • - daß die Stützsegmente an den Bogenlängsträgern lösbar befestigt sind und
  • - daß eine Mehrzahl von nur einer Rollenbahn zugeordneten Rollen an jedem Stützsegment gelagert ist.
This task is solved by the combination of the following features,
  • that each roller conveyor has only two longitudinal rails which are arranged at a distance greater than the longitudinal extent of the rollers at the side of the roller ends,
  • that a plurality of support segments of each roller conveyor is inserted between the associated longitudinal side members,
  • - That the support segments are releasably attached to the side rails and
  • - That a plurality of only one roller conveyor assigned rollers is mounted on each support segment.

Durch die Anordnung der beiden Bogenlängsträger seitlich der Enden der Rollen ist es möglich, die Stützsegmente zwishen den Bogenlängsträgern und längs derselben (zum Zweck des Aus- und Einbaus) zu bewegen.The arrangement of the two longitudinal arch members laterally to the ends of the rollers makes it possible to move the support segments between and along the longitudinal arch members (for the purpose of removal and installation).

Gemäß einer bevorzugten Ausführungsform ist zwischen den Bogenlängsträgern, den Stützsegmenten und den Querträgern ein sich über die gesamte Länge des Stütz- und Führungsbogens erstreckender freier Raum vorgesehen, durch den die Stützsegmente samt eingebauten Rollen längs der Bogenlängsträger nach Lösen von den Bogenlängsträgern bewegbar sind, was den Vorteil bietet, daß die Stützsegmente nicht der Reihe nach, sondern in beliebiger Reihenfolge aus dem Stütz- und Führungsbogen ausgebaut werden bzw. in den Stütz- und Führungsbogen enigebaut werden können. Es kann auch ein einzelnes mittleres Segment aus- und eingebaut werden, ohne daß die übrigen Segmente vom Stütz- und Führungsbogen gelöst werden müssen.According to a preferred embodiment, a free space extending over the entire length of the support and guide arch is provided between the arch side members, the support segments and the cross members, through which the support segments together with built-in rollers can be moved along the side members after detaching them from the side members, which means that The advantage is that the support segments are not removed in sequence, but in any order from the support and guide arch or can be built into the support and guide arch. A single middle segment can also be removed and installed without the other segments having to be detached from the support and guide bend.

Zweckmäßig sind die Stützsegmente an den Bogenlängsträgem mittels Schnellverschlüssen lösbar befestigt, wobei vorteilhaft der Schnellverschluß als in die Stützsegmente einziehbarer, vorzugsweise hydraulisch eniziehbarer, Bolzen ausgebildet ist.The support segments are expediently detachably fastened to the longitudinal supports by means of quick-release fasteners, wherein the quick-release fastener is advantageously designed as a bolt which can be retracted into the support segments, preferably hydraulically retractable.

Die Stützsegmente sind zweckmäßig von Rollenhalterungen oder Rollenlager tragenden Längsträgern gebildet, die von vorzugsweise hohlen rohrförmigen, sich parallel zu den Rollen erstreckenden Trägern verbunden sind, wobei die rückziebaren Bolzen in den hohlen Trägern verschiebbar gelagert sind.The support segments are expediently formed by roller mounts or longitudinal supports carrying roller bearings, which are connected by preferably hollow tubular supports extending parallel to the rollers, the retractable bolts being slidably mounted in the hollow supports.

Gemäß einer anderen vorteilhaften Ausführungsform ist der Schnellverschluß als in die Bogenlängsträger eingesetzte drehbare geschlitzte Buchse und in diese Buchse durch deren Schlitz einsetzbarer, an dem Stützsegment befestigter Halterungsbolzen ausgebildet.According to another advantageous embodiment, the quick-release fastener is designed as a rotatable slotted bushing inserted into the longitudinal side members of the arch and into this bushing insertable through its slot, fastening bolts fastened to the support segment.

Zum einfachen Ein- und Stützsegmente ist in den bogeninnen- und bogenaußenseitigen freien Räumen ein entlang der Bogenlängsträger geführter Greifwagen verfahrbar, an dem Greifvorrichtungen zum Erfassen der Stützsegmente vorgesehen sind. Zweckmäßig ist unterhalb der Arbeitsbühne in Höhe des auf die Kokille folgenden Strangabschnittes (Biegezone) ein den Greifwagen aufnehmender Transportwagen geführt.For simple insertion and support segments, a gripping carriage guided along the longitudinal rails of the arch can be moved in the free spaces inside and outside the arch, on which gripping devices are provided for gripping the support segments. Appropriately below the work platform at the level of the strand section following the mold (bending zone), a transport carriage accommodating the gripping carriage is guided.

Zum Ergreifen der Stützsegmente weist zweckmäßig der Greifwagen Schwenkenarme auf, die mit einem Stützsegment in und außer Eingriff bringbar sind, wobei vorteilhaft die Schwenkarme als Winkelhebel ausgebildet sind.For gripping the support segments, the gripping carriage expediently has pivot arms which can be brought into and out of engagement with a support segment, the pivot arms advantageously being designed as angle levers.

Um ein Klemmen der Stützsegmente beim Ein-und Ausbau zu vermeiden, sind an den Bogentängsträgern Führungen für die Stützsegmente vorgesehen.In order to avoid jamming of the support segments during installation and removal, guides for the support segments are provided on the bow side members.

Zur Führung des Greifwagens sind gemäß einer bevorzugten Ausführungsform entlang der Bogenlängsträger Führungsschienen vorgesehen.According to a preferred embodiment, guide rails are provided for guiding the gripping carriage along the sheet longitudinal members.

Die Erfindung ist anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert, wobei Fig. 1 einen schematisch dargestellten, in der Bogenebene durch den Stütz- und Führungsbogen gelegten Schnitt zeigt. Fig. 2 veranschaulicht einen Schnitt gemäß der Linie 11-11 der Fig. 1. Die Fig. 3 bis 5 zeigen eine weitere Ausführungsform in zu den Fig. 1 und 2 analoger Darstellung, wobei Fig. 3 eine Schnittdarstellung eines in zwei Ebenen geführten Schnittes, u.zw. gemäß den Linien 111-111 bzw. III'-III' der Fig. 4 zeigt; Fig. 5 ist eine Seitenansicht.The invention is based on the drawing Embodiment explained in more detail, wherein Fig. 1 shows a schematically shown, in the arch plane through the support and guide arch section. FIG. 2 illustrates a section along the line 11-11 of FIG. 1. FIGS. 3 to 5 show a further embodiment in an illustration analogous to FIGS. 1 and 2, FIG. 3 being a sectional illustration of a section made in two planes , etc. according to lines 111-111 and III'-III 'of Fig. 4; 5 is a side view.

Ein Gußstrang 1 wird aus einer nicht dargestellten Kokille ausgezogen und in einer unterhalb der Kokille angeordneten, nicht näher dargestellten Biegezone gebogen. Anschließend wird der Strang zwischen einer bogeninneren Rollenbahn 2 und einer bogenäußeren Rollenbahn 3 eines Stütz- und Führungsbogens von nahezu der Senkrechten in nahezu die Horizontale geführt. Dem Führungsbogen ist in Ausziehrichtung des Stranges folgend eine Richtzone nachgeordnet, in der der Strang wieder gerade gebogen wird.A cast strand 1 is pulled out of a mold, not shown, and bent in a bending zone, not shown, arranged below the mold. Subsequently, the strand is guided between an inner roller conveyor 2 and an outer roller conveyor 3 of a support and guide sheet from almost the vertical to almost the horizontal. In the direction of pulling out the strand, a guide zone is arranged downstream of the guide arch, in which the strand is straightened again.

Jede der Rollenbahnen 2, 3 weist zwei über die gesamte Länge des Stütz- und Führungsbogens durchgehende Bogenlängsträger 4, 5 auf, die jeweils in einem Abstand 6, der größer ist als die Länge 7 der Rollen, und seitlich der Rollenenden 8 angeordnet sind. Entlang der bogenaußenseitigen Bogenlängsträger 5 und der bogeninnenseitigen Bogenlängsträger 4 sind in Abständen voneinander die parallel zueinander liegenden Bogenlängsträger hintergreifende Querträger 9, 10 angeordnet, wobei jeweils zwei einander gegenüberliegende Querträger mittels Zugankern 11 zur Aufnahme der ferrostatischen Kräfte gegeneinander gespannt sind. Die Zuganker 11 halten weiters die Rollenbahnen 2 und 3 in einem bestimmten Abstand, der der Dicke 12 des zu vergießenden Stranges 1 entspricht. Das aus den Querträgern und Bogenlängsträgern gebildete Gitterwerk bzw. Fachwerk ist an mindestens zwei Stellen seiner Längserstreckung am Fundament, u.zw. entweder über ein Los- und ein Festlager oder ein Festlager und mehrere Loslager (beispielsweise gemäß der AT-B-343.831), gelagert, was in der Zeichnung nicht näher dargestellt ist.Each of the roller tracks 2, 3 has two sheet longitudinal members 4, 5 which are continuous over the entire length of the support and guide sheet and are each arranged at a distance 6 which is greater than the length 7 of the rollers and to the side of the roller ends 8. Along the arc outside of the longitudinal beams 5 and the inside of the arc longitudinal beams 4, the parallel parallel longitudinal beams 9, 10 are arranged at intervals from each other, two mutually opposite cross beams are tensioned against each other by means of tie rods 11 to absorb the ferrostatic forces. The tie rods 11 also keep the roller conveyors 2 and 3 at a certain distance which corresponds to the thickness 12 of the strand 1 to be cast. The latticework or truss formed from the cross members and longitudinal members of the arch is at least two points along its longitudinal extent on the foundation, etc. either via a floating and a fixed bearing or a fixed bearing and several floating bearings (for example according to AT-B-343.831), which is not shown in the drawing.

Die Bogenlängsträger 4 der bogeninneren Rollenbahn 2 sind an den Querträgern 9 mittels Gleitsteinen 13 beweglich gelagert, um die Einstellung verschiedener Strangdicken zu ermöglichen. Zu diesem Zweck werden die Querträger 9 der bogeninneren Rollenbahn 2 entlang der Zuganker 11 verschoben und die Bogenlängsträger elastisch verformt, wie dies beispielsweise in der AT-B-343.303 beschrieben und dargestellt ist.The sheet longitudinal members 4 of the inner roller conveyor 2 are movably mounted on the cross members 9 by means of sliding blocks 13 in order to enable the setting of different strand thicknesses. For this purpose, the cross members 9 of the inner roller conveyor 2 are moved along the tie rods 11 and the sheet longitudinal members are elastically deformed, as is described and shown, for example, in AT-B-343.303.

Zwischen den Bogenlängsträgern 4 bzw. 5 jeder der Rollenbahnen 2 und 3 sind hintereinander angeordnete Stützsegmente 14 eingesetzt und an den Bogenlängsträgern lösbar befestigt. Jedes der Stützsegmente 14 trägt über Rollenhalterungen 15 eine Mehrzahl von einer Rollenbahn zugeordneten Rollen 16 bzw. 17. Jedes Stützsegment ist aus die Rollenhalterungen 15 tragenden Längsträgern 18 gebildet, wobei die Rollen über ihre Längserstreckung mehrfach abgestütz sind. Diese Längsträger 18 werden von sich parallel zu den Rollen erstreckenden Trägern 19 durchsetzt. Diese Träger sind rohrförmig und weisen an ihren Enden in ihren Hohlraum 20 eingesetzte Bolzen 21 auf. Diese Bolzen sind in Richtung der Längsachse der Träger 19 mittels Hydraulikzylinder 22 verschiebbar, so daß sie aus einer aus den Trägern vorragenden Position, wie sie in Fig. 2 veranschaulicht ist, in eine Position gebracht werden können, in der sie zur Gänze in die Träger eingezogen bzw. zurückgezogen sind. Mittels dieser Bolzen 21 sind die Stützsegmente 14 an den Bogenlängsträgern 4, 5 schnell und leicht lösbar verbunden, wobei die Enden der Bolzen 21 in Bohrungen 23 der Bogenlängsträger einsetzbar bzw. aus den Bohrungen entfernbar sind.Support segments 14, which are arranged one behind the other, are inserted between the sheet longitudinal members 4 and 5 of each of the roller conveyors 2 and 3 and are detachably fastened to the sheet longitudinal members. Each of the support segments 14 carries, via roller holders 15, a plurality of rollers 16 and 17, respectively, assigned to a roller conveyor. Each support segment is formed from longitudinal members 18 carrying the roller holders 15, the rollers being supported several times over their longitudinal extent. These longitudinal beams 18 are penetrated by beams 19 extending parallel to the rollers. These supports are tubular and have bolts 21 inserted into their cavity 20 at their ends. These bolts are displaceable in the direction of the longitudinal axis of the supports 19 by means of hydraulic cylinders 22, so that they can be brought from a position projecting from the supports, as illustrated in FIG. 2, into a position in which they are entirely in the supports have moved in or withdrawn. By means of these bolts 21, the support segments 14 are quickly and easily detachably connected to the longitudinal members 4, 5, the ends of the bolts 21 being insertable into bores 23 of the longitudinal members or being removable from the bores.

Zwischen den Stützsegmenten 14, den Sogenlängsträgern 4 bzw. 5 und den Querträgern 9 bzw. 10 ist ein sich über die gesamte Länge des Stütz- und Führungsbogens erstreckender freier Raum 24 bzw. 25 vorgesehen, durch den die Stützsegmente 14 samt eingebauten Rollen nach Lösen von den Bogenlängsträgern 4 bzw. 5 längs der Bogenlängsträger bewegbar sind. In den Fig. 1 und 2 ist ein Stützsegment mit strichpunktierten Linien dargestellt, das in den freien Raum 24 verschoben ist. Die Ausbaurichtung ist durch den Pfeil 26 veranschaulicht. Zur Durchführung dieser Bewegung in Richtung des Pfeiles 26 sind nicht , dargestellte Führungseinrichtungen und Zugmittel vorgesehen, beispielsweise Schienen und Seil-oder Kettenzüge. Der Ausbau eines bogenäußeren Stützsegmentes entlang des Raumes 25 ist in den Fig. 1 und 2 ebenfalls mit strichpunktierten Linien veranschaulicht. Einander gegenüberliegende Stützsegmente stehen miteinander nicht in direkter Verbindung, so daß die Anordnung der Stützsegmente frei gewählt werden kann, d.h. die Stützsegmente müssen einander nicht genau gegenüberliegen, sondern es können die bogenäußeren Stützsegmente zu den bogeninneren Stützsegmenten in Längsrichtung des Stütz- und Führungsbogens versetzt angeordnet werden.Between the support segments 14, the suction side members 4 and 5 and the cross members 9 and 10 there is a free space 24 and 25, which extends over the entire length of the support and guide arch, through which the support segments 14 together with the installed rollers after loosening the longitudinal members 4 and 5 are movable along the longitudinal members. 1 and 2, a support segment with dash-dotted lines is shown, which is shifted into the free space 24. The direction of removal is illustrated by arrow 26. To carry out this movement in the direction of arrow 26, not shown guide devices and traction means are provided, for example rails and cable or chain hoists. The expansion of an outer support segment along the space 25 is also illustrated in FIGS. 1 and 2 with dash-dotted lines. Support segments lying opposite one another are not in direct connection with one another, so that the arrangement of the support segments can be chosen freely, i.e. the support segments do not have to be exactly opposite one another, but the outer support segments can be arranged offset to the inner support segments in the longitudinal direction of the support and guide arch.

In den Fig. 3 und 4 ist eine weitere Ausführungsform dargestellt. Die Befestigung der Stützsegmente 14 an den Bogenlängsträgern 4 ist hier midifiziert; sie besteht aus in die Stützsegmente eingesetzten Halterungsbolzen 27, die von den Stützsegmenten seitlich auskragen. In die Bogenlängsträger 4 und 5 sind drehbare Buchsen 28 eingesetzt, die die Halterungsbolzen 27 aufnehmen. Diese Buchsen 28 weisen jeweils einen Schlitz 29 auf, durch den die Halterungsbolzen mit einem abgeflachten Endstück 30 heraustreten können. Die Buchsen lassen sich mit Hilfe eines seitlich an den Bogenlängsträgern montierten Druckmittelzylinders 31 aus der in der Fig. 3 links dargestellten Halteposition in die in Fig. 3 rechts dargestellte Ausbauposition verdrehen. Die für ein Stützsegment 14 zur Halterung dienenden Buchsen sind mittels Hebeln 32, 33 und eines Gestänges 34 miteinander verbunden, so daß sie synchron mit Hilfe des Druckmittelzylinders 31 betätigt werden können.3 and 4, a further embodiment is shown. The attachment of the support segments 14 to the arch side members 4 is midified here; it consists of mounting bolts 27 inserted into the support segments, which project laterally from the support segments. Rotatable bushings 28, which receive the mounting bolts 27, are inserted into the sheet longitudinal members 4 and 5. These bushings 28 each have a slot 29 through which the mounting bolts can come out with a flattened end piece 30. The bushings can be turned from the holding position shown on the left in FIG. 3 to the expansion position shown on the right in FIG. 3 with the aid of a pressure medium cylinder 31 mounted on the side of the sheet longitudinal members. The sockets used for a support segment 14 for holding are connected to one another by means of levers 32, 33 and a linkage 34, so that they are actuated synchronously with the aid of the pressure medium cylinder 31 can.

Zum Aus- und Einbau der Stützsegmente ist bei der in den Fig. 3 und 4 dargestellten Ausführungsform ein Greifwagen 35 vorgesehen, der in dem durch die Bogenlängsträger 4 bzw. 5, die Stützsegmente 14 und die Querträger 9 bzw. 10 gebildeten freien Raum 24,25 entlang von Führungsschienen 36 verfahrbar ist. In diesen Führungsschienen rollt der Greifwagen mit seitlich auskragenden, nicht dargestellten Rollen. Der Greifwagen 35 weist zwei parallel zu den Bogenlängsträgern 4 bzw. 5 gerichtete, knapp neben diese zu liegen kommende Seitenwangen 37 auf, die miteinander durch Querstreben 38 zu einem Käfig verbunden sind. Am vorderen Ende des Greifwagens 35 sind zwei Winkelhebel 39 um eine Achse 40 parallel zu den Rollenachsen schwenkbar gelagert. Zur Durchführung der Schwenkbewegung dient ein Druckmittelzylinder 41. Das vordere Ende 42 jedes dieser Hebel ist in eine in der Symmetrieebene eines Stützsegmentes 14 angeordnete Ausnehmung 43 einhakbar. Dies geschieht durch Betätigen eines Druckmittelzylinders 44, der die beiden Winkelhebel 39 miteinander verbindet. Dieser Druckmittelzylinder 44 erlaubt ein Gegeneinanderziehen der beiden Winkelhebel in Richtung der Schwenkachse 40 bzw. ein Spreizen, wodurch ein jeweils an den Winkelhebeln 39 an deren Enden 42 angeordneter Frotsatz 45 mit der Ausnehmung 43 Stützsegmentes in und außer Eingriff bringbar ist. Vorzugsweise federn die Winkelhebel 39 gegeneinander und werden durch den Druckmittetzytinder 44 unter elastischer Verformung auseinandergespreizt. In Fig. 4 ist die Position gezeichnet, in der ein Stützsegment zwischen die Winkelhebel eingeklemmt, d.h. von diesen seitlich umklammert und durch die Fortsätze der Winkelhebel gehalten ist.For the removal and installation of the support segments, a gripping carriage 35 is provided in the embodiment shown in FIGS. 3 and 4, which in the free space 24 formed by the longitudinal arch members 4 and 5, the support segments 14 and the cross members 9 and 10, 25 can be moved along guide rails 36. The gripping carriage rolls in these guide rails with laterally projecting rollers, not shown. The gripping carriage 35 has two side cheeks 37, which are directed parallel to the sheet longitudinal members 4 and 5 and come to lie just next to them and which are connected to one another by cross struts 38 to form a cage. At the front end of the gripping carriage 35, two angle levers 39 are pivotally mounted about an axis 40 parallel to the roller axes. A pressure medium cylinder 41 is used to carry out the pivoting movement. The front end 42 of each of these levers can be hooked into a recess 43 arranged in the plane of symmetry of a support segment 14. This is done by actuating a pressure medium cylinder 44, which connects the two angle levers 39 to one another. This pressure medium cylinder 44 allows the two angle levers to be pulled towards one another in the direction of the pivot axis 40 or to be spread apart, as a result of which a set of screws 45 arranged on the angle levers 39 at their ends 42 can be brought into and out of engagement with the recess 43 of the support segment. The angle levers 39 preferably spring against one another and are spread apart by the pressure fluid cytinder 44 with elastic deformation. In Fig. 4 the position is drawn in which a support segment is clamped between the angle levers, i.e. clutched laterally and held by the extensions of the angle lever.

An den Bogenlängsträgern 4 bzw. 5 sind seitlich der Stützsegmente 14 liegende Führungen 46 vorgesehen, die die Stützsegmente 14 beim Einsetzen in die Anlage ausrichten, so daß das neu eingesetzte Stützsegment mit seinen Halterungsbolzen 27 genau durch die Schlitze 29 in die Buchsen 28 einsetzbar ist. Der Greifwagen 35 ist mittels eines nicht näher dargestellten Seil- oder Kettenzuges entlang der Führungsschienen 36 verfahrbar. In Fig. 3 ist mit strichpunktierten Linien ein Stützsegment 14 gezeichnet, welches in den durch die Bogenlängsträger, die Stützsegmente und die Querträger gebildeten freien Raum 24 mit Hilfe der ebenfalls strichpunktiert dargestellten Winkelhebel 39 des Greifwagens gebracht wurde. Sobald sich das Stützsegment in dieser Position befindet, kann es durch Verschieben des Greifwagehs entlang der Bogenlängsträger 4 bzw. 5 aus der Anlage herausgefahren werden.On the sheet longitudinal members 4 and 5 laterally, the support segments 14 are provided guides 46 which align the support segments 14 when inserted into the system, so that the newly inserted support segment with its mounting bolts 27 can be inserted exactly through the slots 29 into the sockets 28. The gripping carriage 35 can be moved along the guide rails 36 by means of a cable or chain hoist (not shown in more detail). In Fig. 3, dash-dotted lines a support segment 14 is drawn, which was brought into the free space 24 formed by the sheet longitudinal members, the support segments and the cross members with the aid of the angle lever 39 of the gripping carriage, also shown in dash-dotted lines. As soon as the support segment is in this position, it can be moved out of the system by moving the gripping carriage along the longitudinal arch members 4 or 5.

Wie aus Fig. 5 ersichtlich ist, ist unterhalb der Arbeitsbühne 47 der Stranggießanlage in Höhe des auf die Kokille 48 folgenden Strangabschnittes, der bei geraden Kokillen als Biegezone 49, die in Fig. 5 mit strichpunktierten Linien veranschaulicht ist, ausgebildet ist, ein Transportwagen 50 an Schienen 51 geführt, der zwei Greifwagen 35 aufnimmt. Dieser Transportwagen weist, wenn er in die in Fig. 5 strichlierte Lage nach Ausbau der Biegezone verfahren ist, zwei zu den Führungsschienen 36 fluchtende Führungsschienen 52 auf. Jeder der beiden Greifwagen 35 ist einem der freien Räume 24 und 25 zugeordnet. An den Transportwagen 50 sind.Seil- bzw. Kettenzüge 53 eingebaut, mittels denen die Greifwagen 35 in den Stütz- und Führungsbogen abgesenkt bzw. aus diesem herausgezogen werden können.As can be seen from FIG. 5, a transport carriage 50 is located below the working platform 47 of the continuous caster at the level of the strand section following the mold 48, which is formed as a bending zone 49 in the case of straight molds, which is illustrated with dash-dotted lines in FIG. 5 guided on rails 51, which receives two gripping wagons 35. When it has moved into the position shown in dashed lines in FIG. 5 after the bending zone has been removed, this transport carriage has two guide rails 52 aligned with the guide rails 36. Each of the two gripping carriages 35 is assigned to one of the free spaces 24 and 25. Cable or chain hoists 53 are installed on the transport carriage 50, by means of which the gripping carriage 35 can be lowered into the support and guide arch or pulled out of it.

Claims (15)

1. A supporting and guiding arc for cast strands, in particular for slab cast strands, comprising rollerways (2. 3) supporting the strand (1) on opposite sides, whose rollers (16,17) are mounted on one-piece arcuate longitudinal carriers extending over the total length of the guiding arc, transverse carriers (9, 10) being arranged oppositely in pairs along the arcuate longitudinal carriers at distances from one anothpr and engaging the arcuate longitudinal carriers from behind, which transverse carriers are connected by drawing anchors (11), characterised by the combination of the following characteristic features,
- that each rollerway (2 or 3, respectively) has only two arcuate longitudinal carriers (4,4 or 5,5, respectively), which are arranged at a distance (6) larger than the longitudinal extension (7) of the rollers (16, 17), laterally of the roller ends (8),
- that a plurality of supporting segments (14) are inserted in the rollerway (2 or 3, respectively) between the arcuate longitudinal carriers (4,4 or 5,5, respectively) allocated thereto,
- that the supporting segments (14) are detachably fastened to the arcuate longitudinal carriers (4,4 or 5,5, respectively), and
- that a plurality of rollers (16, 17) allocated to only one rollerway (2 or 3, respectively) are journalled on each supporting segment (14).
2. A supporting and guiding arc according to claim 1, characterised in that, between the arcuate longitudinal carriers (4, 5), the supporting segments (14) and the transverse carriers (9, 10), a free space (24, 25) is provided, which extends over the total lenght of the supporting and guiding arc and through which the supporting segments (14), together with the rollers (16, 17) installed therein, are movable along the arcuate longitudinal carriers (4, 5) after detachment from the arcuate longitudinal carriers.
3. A supporting and guiding arc according to claim 1 or 2, characterised in that the supporting segments (14) are detachably fastened to the arcuate longitudinal carriers by means of quicklocks (21, 22).
4. A supporting and guiding arc according to claim 3, characterised in that the quicklock is designed as a pin (21) retractable, preferably hydraulically retractable, into the supporting segments (14) (Fig. 1 and 2).
5. A supporting and guiding arc according to claims 1 to 4, characterised in that the supporting segments (14) are formed by longitudinal carriers (18) carrying roller holding means (15) or roller bearings and connected by, preferably hollow tube- shaped, carriers (19) extending parallel to the rollers (16,17) (Figs. 1 and 2).
6. A supporting and guiding arc according to claims 4 and 5, characterised in that the retractable pins (21) are displaceably mounted in the hollow carriers (19) (Figs. 1 and 2).
7. A supporting and guiding arc according to claims 1 to 3, characterised in that the quicklock is designed as a rotatable slotted bush (28) inserted in teh arcuate longitudinal carriers (4) and a holding pin (27) fastened to the supporting segment (14) and insertable into this bush through its slot (29) (Figs. 3 and 4).
8. A supporting and guiding arc according to claim 2, characterised in that a grab car (35) guided along the arcuate longitudinal carriers (4, 5) is movable within the arc-inner and arc-outer side free spaces (24, 25), on which grab car grab means (39, 45) for seizing the supporting segments (14) are provided (Figs. 3 and 4).
9. A supporting and guiding arc according to claim 8, characterised in that a transporting car (50) accommodating the grab car (35) is guided below the working platform (47) at the height of the strand section (49) (bending zone) following upon the mould (48).
10. A supporting and guiding stand according to claim 8 or 9, characterised in that the grab car (35) comprises pivot arms (39) placeable into and out of engagement with a supporting segment (14).
11. A supporting and guiding arc according to claim 10, characterised in that the pivot arms are designed as angle levers (39).
12. A supporting and guiding arc according to claim 10 or 11, characterised in that two pivot arms (39) each are placeable towards and away from each other and, thus are placeable into and out of engagement with the supporting segment (14), by an adjustment means (44).
13. A supporting and guiding arc according to claim 12, characterised in that the pivot arms (39) are designed to be resilient with respect to each other and are placeable out of engagement with the supporting segment (14) by the adjustment means (44) under elastic deformation.
14. A supporting and guiding arc according to claims 8 to 13, characterised in that guides (46) for the supporting segments (14) are provided on the arcuate longitudinal carriers (4, 5).
15. A supporting and guiding arc according to claims 8 to 14, characterised in that guide rails (36) for the grab car (35) are provided along the arcuate longitudinal carriers (4, 5).
EP82890117A 1981-09-17 1982-08-09 Supporting and guiding arc for cast strands Expired EP0076248B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0401681A AT370656B (en) 1981-09-17 1981-09-17 SUPPORT AND GUIDE BOW FOR CAST STRINGS
AT4016/81 1981-09-17

Publications (2)

Publication Number Publication Date
EP0076248A1 EP0076248A1 (en) 1983-04-06
EP0076248B1 true EP0076248B1 (en) 1986-01-15

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EP82890117A Expired EP0076248B1 (en) 1981-09-17 1982-08-09 Supporting and guiding arc for cast strands

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US (1) US4485837A (en)
EP (1) EP0076248B1 (en)
JP (1) JPS5858970A (en)
AT (1) AT370656B (en)
DE (1) DE3268546D1 (en)

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Publication number Priority date Publication date Assignee Title
DE19739694C1 (en) * 1997-09-04 1998-12-10 Mannesmann Ag Support roll frame for continuous metal, in particular, steel casting installations
DE19824366A1 (en) * 1998-05-30 1999-12-02 Schloemann Siemag Ag Strand guide segment for slab caster
US8302662B2 (en) * 2008-01-14 2012-11-06 Sms Concast Ag Continuous casting plant particularly for long steel products, and a method for continuous casting

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710847A (en) * 1969-05-30 1973-01-16 Voest Ag Elastically deformable curved supporting and guiding construction for cast bars
AT290750B (en) * 1969-05-30 1971-06-11 Voest Ag Support and guide arch for cast strands
DE2135860C3 (en) * 1971-07-17 1980-08-21 Schloemann-Siemag Ag, 4000 Duesseldorf Continuous casting plant with curved strand guide
AT340618B (en) * 1975-01-07 1977-12-27 Voest Ag ROPE GUIDE FOR CONTINUOUS CASTING PLANTS WITH A FRAME OR SLIDING BY AN ACTUATOR YOKE
AT343303B (en) * 1975-10-01 1978-05-26 Voest Ag SUPPORT BEND AND GUIDE BEND FOR CAST ROD, IN PARTICULAR FOR CAST ROD
AT341698B (en) * 1975-10-16 1978-02-27 Voest Ag SUPPORT BEND AND GUIDE BEND FOR CAST ROD, IN PARTICULAR FOR CAST ROD
AT343831B (en) * 1975-11-12 1978-06-26 Voest Ag SUPPORT BEND AND GUIDE BEND FOR CAST ROD
AT349668B (en) * 1977-06-28 1979-04-25 Voest Ag SUPPORT BOW AND GUIDE BEND FOR CAST STRUCTURE
CH627385A5 (en) * 1978-04-19 1982-01-15 Schloemann Siemag Ag CONTINUOUS CASTING SYSTEM WITH STRUCTURE SUBSECTED IN SEGMENTS.
AT368419B (en) * 1978-09-19 1982-10-11 Voest Alpine Ag STRING GUIDANCE FOR CONTINUOUS CASTING PLANTS
DE2903540C2 (en) * 1979-01-31 1986-11-20 SMS Schloemann-Siemag AG, 4000 Düsseldorf Device for fastening the strand guide segments of a continuous caster
AT359675B (en) * 1979-03-07 1980-11-25 Voest Alpine Ag SUPPORT AND LEADERSHIP FOR AN ARC CONTINUOUS CASTING SYSTEM
AT361649B (en) * 1979-06-28 1981-03-25 Voest Alpine Ag SUPPORT AND LEADERSHIP FOR CONTINUOUS CASTING PLANTS
AT368049B (en) * 1979-11-28 1982-08-25 Voest Alpine Ag FITTING ON A SUPPORT AND GUIDE FOR A CONTINUOUS CASTING SYSTEM
US4351383A (en) * 1980-04-10 1982-09-28 Gladwin Corporation Bearings for continuous casting roller aprons

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DE3268546D1 (en) 1986-02-27
AT370656B (en) 1983-04-25
JPS5858970A (en) 1983-04-07
ATA401681A (en) 1982-09-15
US4485837A (en) 1984-12-04
EP0076248A1 (en) 1983-04-06

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