EP0067400B1 - Device for turning and transferning strand cuts on a parallel cooling bank in a continuous casting plant - Google Patents

Device for turning and transferning strand cuts on a parallel cooling bank in a continuous casting plant Download PDF

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Publication number
EP0067400B1
EP0067400B1 EP19820104990 EP82104990A EP0067400B1 EP 0067400 B1 EP0067400 B1 EP 0067400B1 EP 19820104990 EP19820104990 EP 19820104990 EP 82104990 A EP82104990 A EP 82104990A EP 0067400 B1 EP0067400 B1 EP 0067400B1
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EP
European Patent Office
Prior art keywords
swivel arm
bar
equipment according
movement
lengths
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Expired
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EP19820104990
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German (de)
French (fr)
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EP0067400A1 (en
Inventor
Adalbert Röhrig
Josef Zeller
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Concast Standard AG
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Concast Service Union AG
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Publication of EP0067400A1 publication Critical patent/EP0067400A1/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
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting

Definitions

  • the invention relates to a device for turning and transferring strand sections from an outfeed roller table of a continuous casting installation to an adjacent cooling bed, consisting of a push-off carriage which can be moved transversely to the strand running direction and a turning device which turns the strand sections by means of a swivel arm along a stationary guide curved by a quarter circle ( DE-A-1 602171).
  • a device for turning and transferring strand sections from discharge roller tables to a secondary cooling bed is known (DE-OS 1 602171), a lifting and turning device being provided for each strand wire and a plane formed by rails being arranged for transverse displacement above the discharge roller tables is. So that the individual strand sections can be brought to the transverse sliding level with the lifting and turning devices, the rails above the individual run-out roller tables are designed in a flap-like manner.
  • the lifting and turning devices essentially consist of a swivel arm which lifts the strand sections and turns them through 90 ° along a curved guide. The strand sections brought to the shifting plane are moved transversely with a cross tractor and brought to the adjacent cooling bed.
  • This device for turning and transferring strand sections is costly, on the one hand, because a separate lifting and turning device with a corresponding drive is necessary for each strand. Furthermore, the rails of the transverse sliding plane arranged above the run-out roller tables block access to the run-out roller tables.
  • the lifting and turning devices arranged between the strand academy in multi-strand systems are also exposed to heat radiation and, depending on the construction, require corresponding cooling devices. These lifting and turning devices arranged between the strands also require certain minimum strand spacings which cannot be fallen short of.
  • the invention has for its object to provide a device for turning and transferring strand sections from an outfeed roller table to a secondary cooling bed, which overcomes the disadvantages mentioned and at the same time is much easier and cheaper and ensures good access to the outfeed roller tables. Furthermore, greater freedom with regard to the number of strands per machine and the choice of strand spacing should be guaranteed.
  • this object is achieved in that the push-off carriage pushes the strand sections directly from the outfeed roller table onto a slide arranged to the side of the outfeed roller table, which feeds the strand sections to the turning device and in that the swivel arm of the turning device lifts the strand sections temporarily stored on the slide in a staggered manner over time.
  • the device according to the invention ensures a cost-effective construction, because a single lifting and turning device can serve several conveying lines of strands. Furthermore, the omission of the rails of the transverse sliding plane arranged above the run-out roller tables results in improved accessibility to the run-out roller tables and a further reduction in price. The omission of the lifting and turning devices arranged between the strands also ensures greater freedom with regard to the choice of the spacing between the strands.
  • a cost-effective solution is, for example, a combination of the lifting and turning device with a cooling bed, consisting of a ratchet tractor and a removal table.
  • the strand sections are introduced into the ratchet tractor by rotating through 90 ° in such a way that when pushed together, they pass through on the removal table the cutting width does not suffer any bending.
  • a particularly inexpensive solution can be achieved if the swivel arm is simultaneously provided for the pushing movement on the push-off cooling bed. This means that additional drives for the pushing movement can be saved.
  • a drive for the cross tractor and several independent drives for the lifting and turning devices are provided.
  • Appropriate program control is required to coordinate the movements of these devices.
  • another example beat of the invention can be dispensed with this program control and the system can be significantly simplified and cheaper if the push-off carriage is connected to the swivel arm via a lever system.
  • the invention proposes to provide the swivel arm with a plurality of receiving pockets arranged in a stepped manner for the staggered reception of several strand sections and the guideway of the stationary guide, which is curved approximately by a quarter circle to be arranged eccentrically to the center of movement of the swivel arm and to run from a path of movement of an inner receiving pocket into a path of movement of an adjacent outer receiving pocket.
  • the swivel arm is advantageously provided with a guide on its outer boundary, which stops and positions the slipping strands.
  • the invention further proposes that the swivel arm has an eccentric stop track on its outer boundary for stopping and positioning strand sections on the slide, and that the center of curvature the stop track in the starting position is lower than the movement center.
  • the invention proposes that the lever system consists of a swivel lever which is articulated at one end via the swivel arm to the swivel arm drive and at the other end to a handlebar.
  • the invention further proposes that the drive common to the push-off carriage and for the swivel arm consists of a hydraulic piston-cylinder unit.
  • the coordination between the sequence of movements of the cross tractor and the lifting and turning device can advantageously be expanded if the ratchet tractor and the swivel arm are mechanically connected by means of a drive lever. This simplifies control on the one hand and eliminates the need for an additional drive on the other.
  • strand sections 3 lie on two run-out roller tables 2, 2 'of a continuous caster.
  • a push-off carriage 4 is arranged above the run-up roller tables 2, 2'. It consists of a frame 5 provided with wheels 6, which can be moved along supports 7 and has a plurality of pawls 8.
  • the push-off carriage 4 is connected to the drive of a swivel arm 15 via a link 9 and a swivel lever 10, which form a lever system. Due to the lifting movement of a piston-cylinder unit 13, the swivel arm 15 and the swivel lever 10 connected to it by a profile shaft 12 are swiveled simultaneously and by the same angle.
  • the pivot lever 10 can also be rigidly connected directly to the pivot arm 15. Between the outlet roller tables 2, 2 'and a curved slide guide 17, which together with the swivel arm 15 constitutes a lifting and turning device, there is a slide 18 falling towards an inlet station 20. This slide 18 connects the plane 19 of the outlet roller tables 2, 2'. with the lifting and turning device.
  • the angle of inclination 11 of the chute 18 is greater than the friction angle ⁇ between the chute 18 and the strand section.
  • a strand section 3 is raised by the movement of the swivel arm 15 and is pushed along the curved slide guide 17 onto a fixed carrier of a small tractor 21.
  • the pawl tractor 21 With each stroke of the piston-cylinder unit 13, in addition to the swivel arm 15 and the swivel lever 10, the pawl tractor 21 is also moved by a pawl distance via a drive lever 23.
  • a removal table 24 is arranged behind the ratchet tractor 21, on which the strand sections are prepared so as to abut against one another for removal. As a rule, the strand sections are lifted off the take-off table 24 by means of a crane hanging device or a magnet.
  • this device In a lifting movement of the piston-cylinder unit 13, in this example the push-off carriage 4 clears two strands of the run-out roller tables 2, 2 ′ and moves them onto the slide 18. With the same lifting movement, a strand section 3 is simultaneously lifted from the infeed station 20 onto the ratchet tractor 21. The ratchet tractor 21 shifts all strands on the ratchet tractor 21 by a ratchet distance with the same lifting movement.
  • the push-off carriage 4, the swivel arm 15 and the pawl tractor 21 return to the position shown in solid lines in FIGS. 1 and 2. In this two-strand system, before the entry of new strand sections 3 onto the outlet roller tables 2, 2 ', an idle stroke is necessary in order to turn the second strand and push it onto the jack bed.
  • strand sections 30, 30 ', 30 lie on a sloping chute 32.
  • These three strand sections 30, 30', 30" are by means of a cross tractor, not shown, from a plane 31 of unrolling reels of a multi-strand system, not shown, in one stroke onto the Slide 32 has been pushed.
  • the cross tractor could, for example, have a similar or the same construction as shown and described in FIG. 1.
  • the slide 32 interacts with a swivel arm 35, a curved slide guide 37 and a push-off cooling bed 38.
  • the pivot arm 35 can be pivoted about a movement center 39 via a piston rod 34. It is provided with three stair-shaped receiving pockets 41, 41 ', 41 "for the staggered holding of several strand sections 30, 30', 30".
  • the receiving pocket 41 takes the strand section 30 with it and guides this strand section 30 along the curved sliding guide 37.
  • the receiving pocket 41 'or 41 "reaches the strand sections 30' or 30"
  • these strand sections are also raised .
  • the receiving pockets 41, 41 ′ interact with the curved slide guide 37, which is arranged eccentrically with respect to the movement center 39.
  • the strand section 30, which lies in the receiving pocket 41 closest to the movement center 39, is lifted out of the path of movement of an inner receiving pocket 41 by the curved sliding guide 37 and pushed into the path of movement of the adjacent outer receiving pocket 41 'in front of the strand section 30'. This state is shown in broken lines in FIG. 2.
  • the strands 30 are cleared from the run-out roller tables simultaneously with the stroke of the swivel arm 35 by a push-off carriage, three new strand sections 30 are already on the slide 32 during the return stroke of the swivel arm 35.
  • One of them is in Contact with a stop track 40 of the swivel arm 35.
  • this stop track 40 In order that the wear of this stop track 40 can be kept low during the return stroke, it is so eccentric with respect to the movement center 39 that during the return stroke the parts of the stop track 40 grinding on the strand section 30 in the direction of the movement center 39 of the swivel arm 35 retreats, as a result of which the frictional force between the stop track 40 and the slipping strand section 30 is reduced or eliminated.
  • Such an eccentricity occurs when a center of curvature 51 of the stop track 40 is lower in the starting position than the center of movement 39.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Conveyors (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Wenden und Uebergeben von Strangabschnitten von einem Auslaufrollgang einer Stranggiessanlage auf ein nebengeordnetes Kühlbett, bestehend aus einem quer zur Stranglaufrichtung verfahrbaren Abschiebewagen und einer Wendeeinrichtung, die die Strangabschnitte mittels einem Schwenkarm entlang einer um etwa eine Viertelkreislinie gekrümmte stationäre Führung wendet (DE-A-1 602171).The invention relates to a device for turning and transferring strand sections from an outfeed roller table of a continuous casting installation to an adjacent cooling bed, consisting of a push-off carriage which can be moved transversely to the strand running direction and a turning device which turns the strand sections by means of a swivel arm along a stationary guide curved by a quarter circle ( DE-A-1 602171).

Beim Schneiden von Strängen, vorzugsweise von Knüppelsträngen und kleineren Vorblocksträngen, mittels Scheren innerhalb von Stranggiessanlagen können Verformungen an Strangenden durch den Schnitt nicht ganz vermieden werden. Diese Verformung, die in der Regel eine Breitung der Strangenden gegenüber dem Strangquerschnitt erzeugt, hat den Nachteil, dass -verursacht durch diese Breitung -solche Strangabschnitte beim Abschieben auf Schienenkühlbette oder beim Zusammenschieben zu Stapeleinheiten auf einem Abnahmetisch für den Weitertransport krumm gedrückt werden. Krumme Strangabschnitte haben bei der anschliessenden Weiterverarbeitung verschiedene Nachteile, insbesondere wenn die Weiterverarbeitung automatisiert abläuft.When cutting strands, preferably billet strands and smaller blooms, using scissors within continuous casting plants, deformations at the ends of the strands cannot be completely avoided by the cut. This deformation, which generally produces a widening of the strand ends relative to the strand cross-section, has the disadvantage that, caused by this widening, such strand sections are crooked when pushed onto rail cooling beds or when pushed together to form stack units on a take-off table for further transport. Crooked strand sections have various disadvantages in the subsequent further processing, in particular if the further processing is automated.

Es ist bei einer Stranggiessanlage eine Vorrichtung zum Wenden und Uebergeben von Strangabschnitten von Auslaufrollgängen auf ein nebengeordnetes Kühlbett bekannt (DE-OS 1 602171), wobei eine Hebe- und Wendeeinrichtung für jede Strangader vorgesehen und oberhalb der Auslaufrollgänge eine durch Schienen gebildete Ebene zum Querverschieben angeordnet ist. Damit die einzelnen Strangabschnitte mit den Hebe- und Wendeeinrichtungen auf die Querverschiebeebene gebracht werden können, sind die Schienen oberhalb der einzelnen Auslaufrollgänge klappenartig ausgeführt. Die Hebe-und Wendeeinrichtungen bestehen im wesentlichen aus einem Schwenkarm, der die Strangabschnitte hebt und entlang einer gekrümmten Führung um 90° wendet. Mit einem Querschlepper werden die auf die Verschiebeebene gebrachten Strangabschnitte quer verschoben und auf das nebengeordnete Kühlbett gebracht. Diese Vorrichtung zum Wenden und Uebergeben von Strangabschnitten ist einerseits kostenaufwendig, weil für jeden Strang eine eigene Hebe- und Wendeeinrichtung mit entsprechendem Antrieb notwendig ist. Im weiteren verbauen die oberhalb der Auslaufrollgänge angeordneten Schienen der Querverschiebeebene die Zugänglichkeit zu den Auslaufrollgängen. Die bei Mehrstranganlagen zwischen den Strangadem angeordneten Hebe- und Wendeeinrichtungen sind aber auch der Wärmestrahlung ausgesetzt und erfordern je nach Konstruktion entsprechende Kühleinrichtungen. Auch benötigen diese zwischen den Strängen angeordneten Hebe- und Wendeeinrichtungen bestimmte minimale Strangabstände, die nicht unterschritten werden können.In a continuous caster, a device for turning and transferring strand sections from discharge roller tables to a secondary cooling bed is known (DE-OS 1 602171), a lifting and turning device being provided for each strand wire and a plane formed by rails being arranged for transverse displacement above the discharge roller tables is. So that the individual strand sections can be brought to the transverse sliding level with the lifting and turning devices, the rails above the individual run-out roller tables are designed in a flap-like manner. The lifting and turning devices essentially consist of a swivel arm which lifts the strand sections and turns them through 90 ° along a curved guide. The strand sections brought to the shifting plane are moved transversely with a cross tractor and brought to the adjacent cooling bed. This device for turning and transferring strand sections is costly, on the one hand, because a separate lifting and turning device with a corresponding drive is necessary for each strand. Furthermore, the rails of the transverse sliding plane arranged above the run-out roller tables block access to the run-out roller tables. However, the lifting and turning devices arranged between the strand academy in multi-strand systems are also exposed to heat radiation and, depending on the construction, require corresponding cooling devices. These lifting and turning devices arranged between the strands also require certain minimum strand spacings which cannot be fallen short of.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Wenden und Uebergeben von Strangabschnitten von einem Auslaufrollgang auf ein nebengeordnetes Kühlbett zu schaffen, das die genannten Nachteile überwindet und zugleich wesentlich einfacher und kostengünstiger ist und eine gute Zugänglichkeit zu den Auslaufrollgängen gewährleistet. Im weiteren soll eine grössere Freiheit bezüglich der Anzahl Stränge pro Maschine und der Wahl der Strangabstände gewährleistet sein.The invention has for its object to provide a device for turning and transferring strand sections from an outfeed roller table to a secondary cooling bed, which overcomes the disadvantages mentioned and at the same time is much easier and cheaper and ensures good access to the outfeed roller tables. Furthermore, greater freedom with regard to the number of strands per machine and the choice of strand spacing should be guaranteed.

Gemäss der Erfindung wird diese Aufgabe dadurch gelöst, dass der Abschiebewagen die Strangabschnitte direkt vom Auslaufrollgang auf eine seitlich des Auslaufrollganges angeordnete Rutsche schiebt, die die Strangabschnitte der Wendeeinrichtung zuführt und dass der Schwenkarm der Wendeeinrichtung die auf der Rutsche zwischengelagerten Strangabschnitte zeitlich gestaffelt abhebt.According to the invention, this object is achieved in that the push-off carriage pushes the strand sections directly from the outfeed roller table onto a slide arranged to the side of the outfeed roller table, which feeds the strand sections to the turning device and in that the swivel arm of the turning device lifts the strand sections temporarily stored on the slide in a staggered manner over time.

Die erfindungsgemässe Vorrichtung gewährleistet eine kostengünstige Konstruktion, weil eine einzige Hebe- und Wendeeinrichtung mehreren Ausförderlinien von Strängen dienen kann. Im weiteren ergibt sich durch die Weglassung der oberhalb der Auslaufrollgänge angeordneten Schienen der Querverschiebeebene eine verbesserte Zugänglichkeit zu den Auslaufrollgängen und eine weitere Verbilligung. Durch die Weglassung der zwischen den Strängen angeordneten Hebe- und Wendeeinrichtungen wird auch eine grössere Freiheit bezüglich der Wahl der Strangabstände gewährleistet.The device according to the invention ensures a cost-effective construction, because a single lifting and turning device can serve several conveying lines of strands. Furthermore, the omission of the rails of the transverse sliding plane arranged above the run-out roller tables results in improved accessibility to the run-out roller tables and a further reduction in price. The omission of the lifting and turning devices arranged between the strands also ensures greater freedom with regard to the choice of the spacing between the strands.

Die Wahl der Art des Kühlbettes, das der Hebe- und Wendeeinrichtung unmittelbar anschliessend nachfolgt, kann den Kühlerfordernissen entsprechend unterschiedlich getroffen werden. Eine kostengüngstige Lösung stellt beispielsweise eine Kombination der Hebe-und Wendeeinrichtung mit einem Kühlbett, bestehend aus einem Klinkenschlepper und einem Abnahmetisch, dar. Die Strangabschnitte werden dabei durch die Drehung um 90° so in den Klinkenschlepper eingebracht, dass sie beim Zusammenschieben auf dem Abnahmetisch durch die Schnittbreitung keine Verbiegungen erleiden.The choice of the type of cooling bed that immediately follows the lifting and turning device can be made differently depending on the cooling requirements. A cost-effective solution is, for example, a combination of the lifting and turning device with a cooling bed, consisting of a ratchet tractor and a removal table. The strand sections are introduced into the ratchet tractor by rotating through 90 ° in such a way that when pushed together, they pass through on the removal table the cutting width does not suffer any bending.

Eine besonders preisgünstige Lösung kann, nach einem weiteren Kennzeichen der Erfindung erreicht werden, wenn der Schwenkarm gleichzeitig für die Stossbewegung auf dem Abschiebekühlbett vorgesehen ist. Dadurch können zusätzliche Antriebe für die Stossbewegung eingespart werden.According to a further feature of the invention, a particularly inexpensive solution can be achieved if the swivel arm is simultaneously provided for the pushing movement on the push-off cooling bed. This means that additional drives for the pushing movement can be saved.

Gemäss der Lösung im genannten Stand der Technik sind ein Antrieb für den Querschlepper und mehrere unabhängige Antriebe für die Hebe-und Wendeeinrichtungen vorgesehen. Für die Koordination der Bewegungen dieser Einrichtungen ist eine entsprechende Programmsteuerung notwendig. Gemäss einem weiteren Vorschlag der Erfindung kann auf diese Programmsteuerung verzichtet und die Anlage wesentlich vereinfacht und verbilligt werden, wenn der Abschiebewagen über ein Hebelsystem mit dem Schwenkarm verbunden ist.According to the solution in the cited prior art, a drive for the cross tractor and several independent drives for the lifting and turning devices are provided. Appropriate program control is required to coordinate the movements of these devices. According to another example beat of the invention can be dispensed with this program control and the system can be significantly simplified and cheaper if the push-off carriage is connected to the swivel arm via a lever system.

Um die erfindungsgemässe Vorrichtung auch bei Mehrstranganlagen mit hohen Giessgeschwindigkeiten bzw. kurz geschnittenen Strangabschnitten einsetzen zu können, schlägt die Erfindung vor, den Schwenkarm mit mehreren treppenförmig angeordneten Aufnahmetaschen für die gestaffelte Aufnahme mehrerer Strangabschnitte zu versehen und die Führungsbahn der etwa um eine Viertelkreislinie gekrümmten stationären Führung zum Bewegungszentrum des Schwenkarmes exzentrisch anzuordnen und von einer Bewegungsbahn einer inneren Aufnahmetasche in eine Bewegungsbahn einer benachbarten äusseren Aufnahmetasche verlaufen zu lassen.In order to be able to use the device according to the invention also in multi-strand systems with high casting speeds or short-cut strand sections, the invention proposes to provide the swivel arm with a plurality of receiving pockets arranged in a stepped manner for the staggered reception of several strand sections and the guideway of the stationary guide, which is curved approximately by a quarter circle to be arranged eccentrically to the center of movement of the swivel arm and to run from a path of movement of an inner receiving pocket into a path of movement of an adjacent outer receiving pocket.

Mit Vorteil wird der Schwenkarm an seiner äusseren Begrenzung mit einer Führung versehen, die die nachrutschenden Stränge stoppt und positioniert. Um beim Rückhub des Schwenkarmes die gleitende Reibung zwischen dem Schwenkarm und den Strangabschnitten zu vermindern, schlägt die Erfindung im weiteren vor, dass der Schwenkarm an seiner äusseren Begrenzung eine exzentrisch verlaufende Anschlagsbahn zum Stoppen und Positionieren von Strangabschnitten auf der Rutsche aufweist, und dass der Krümmungsmittelpunkt der Anschlagsbahn in der Ausgangsstellung tiefer liegt als das Bewegungszentrum.The swivel arm is advantageously provided with a guide on its outer boundary, which stops and positions the slipping strands. In order to reduce the sliding friction between the swivel arm and the strand sections during the return stroke of the swivel arm, the invention further proposes that the swivel arm has an eccentric stop track on its outer boundary for stopping and positioning strand sections on the slide, and that the center of curvature the stop track in the starting position is lower than the movement center.

Für die Koppelung der Hubbewegung des Querschleppers mit dem Antrieb der Hebe- und Wendeeinrichtung schlägt die Erfindung vor, dass das Hebelsystem aus einem Schwenkhebel, der an einem Ende über den Schwenkarm mit dem Schwenkarmantrieb und am andern Ende mit einem Lenker gelenkig verbunden ist, besteht. Zur Erzeugung der erforderlichen grossen Kraft, die für die Stossbewegung der Strangabschnitte auf dem Abschiebekühlbett nötig ist, schlägt die Erfindung im weiteren vor, dass der für den Abschiebewagen und für den Schwenkarm gemeinsame Antrieb aus einer hydraulischen Kolbenzylindereinheit besteht.For the coupling of the lifting movement of the cross tractor with the drive of the lifting and turning device, the invention proposes that the lever system consists of a swivel lever which is articulated at one end via the swivel arm to the swivel arm drive and at the other end to a handlebar. In order to generate the large force required for the pushing movement of the strand sections on the push-off cooling bed, the invention further proposes that the drive common to the push-off carriage and for the swivel arm consists of a hydraulic piston-cylinder unit.

Die Koordination zwischen dem Bewegungsablauf des Querschleppers und der Hebe- und Wendeeinrichtung kann mit Vorteil zusätzlich erweitert werden, wenn der Klinkenschlepper und der Schwenkarm mittels eines Antriebshebels mechanisch verbunden sind. Dadurch kann einerseits die Steuerung vereinfacht und anderseits auf einen zusätzlichen Antrieb verzichtet werden.The coordination between the sequence of movements of the cross tractor and the lifting and turning device can advantageously be expanded if the ratchet tractor and the swivel arm are mechanically connected by means of a drive lever. This simplifies control on the one hand and eliminates the need for an additional drive on the other.

Im nachfolgenden werden anhand von Figuren Beispiele des Erfindungsgegenstandes erläutert. Dabei zeigen :

  • Figur 1 eine schematisch dargestellte Seitenansicht eines Beispieles einer erfindungsgemässen Vorrichtung,
  • Figur 2 eine Draufsicht auf das Beispiel gemäss Fig. 1 und
  • Figur 3 eine schematische Darstellung eines weiteren Beispieles einer Hebe- und Wendeeinrichtung.
Examples of the subject matter of the invention are explained below with reference to figures. Show:
  • FIG. 1 shows a schematically represented side view of an example of a device according to the invention,
  • Figure 2 is a plan view of the example of FIG. 1 and
  • Figure 3 is a schematic representation of another example of a lifting and turning device.

In Fig. 1 und 2 liegen auf zwei Auslaufrollgängen 2, 2' einer Stranggiessanlage Strangabschnitte 3. Oberhalb der Auflaufrollgänge 2, 2' ist ein Abschiebewagen 4 angeordnet. Es besteht aus einem mit Rädern 6 versehenen Rahmen 5, der entlang von Trägern 7 verfahrbar ist und mehrere Stossklinken 8 aufweist. Der Abschiebewagen 4 ist über einen Lenker 9 und einen Schwenkhebel 10, die ein Hebelsystem bilden, mit dem Antrieb eines Schwenkarmes 15 verbunden. Durch die Hubbewegung einer Kolbenzylindereinheit 13 wird der Schwenkarm 15 und der mit diesem durch eine Profilwelle 12 verbundene Schwenkhebel 10 gleichzeitig und um den gleichen Winkel verschwenkt. Der Schwenkhebel 10 kann aber auch direkt mit dem Schwenkarm 15 starr verbunden sein. Zwischen den Auslaufrollgängen 2, 2' und einer gekrümmten Gleitführung 17, die zusammen mit dem Schwenkarm 15 eine Hebe- und Wendeeinrichtung darstellt, liegt eine zu einer Einlaufstation 20 hin abfallende Rutsche 18. Diese Rutsche 18 verbindet die Ebene 19 der Auslaufrollgänge 2, 2' mit der Hebe- und Wendeeinrichtung. Der Neigungswinkel 11 der Rutsche 18 ist grösser als der Reibungswinkel µ zwischen der Rutsche 18 und dem Strangabschnitt.In FIGS. 1 and 2, strand sections 3 lie on two run-out roller tables 2, 2 'of a continuous caster. Above the run-up roller tables 2, 2', a push-off carriage 4 is arranged. It consists of a frame 5 provided with wheels 6, which can be moved along supports 7 and has a plurality of pawls 8. The push-off carriage 4 is connected to the drive of a swivel arm 15 via a link 9 and a swivel lever 10, which form a lever system. Due to the lifting movement of a piston-cylinder unit 13, the swivel arm 15 and the swivel lever 10 connected to it by a profile shaft 12 are swiveled simultaneously and by the same angle. The pivot lever 10 can also be rigidly connected directly to the pivot arm 15. Between the outlet roller tables 2, 2 'and a curved slide guide 17, which together with the swivel arm 15 constitutes a lifting and turning device, there is a slide 18 falling towards an inlet station 20. This slide 18 connects the plane 19 of the outlet roller tables 2, 2'. with the lifting and turning device. The angle of inclination 11 of the chute 18 is greater than the friction angle μ between the chute 18 and the strand section.

In der Einlaufstation 20 wird durch die Bewegung des Schwenkarmes 15 jeweils ein Strangabschnitt 3 angehoben und entlang der gebogenen Gleitführung 17 auf einen feststehenden Träger eines Kleinkenschleppers 21 gestossen.In the infeed station 20, a strand section 3 is raised by the movement of the swivel arm 15 and is pushed along the curved slide guide 17 onto a fixed carrier of a small tractor 21.

Mit jedem Hub der Kolbenzylindereinheit 13 wird neben dem Schwenkarm 15 und dem Schwenkhebel 10 auch der Klinkenschlepper 21 über einen Antriebshebel 23 um einen Klinkenabstand bewegt. Hinter dem Klinkenschlepper 21 ist ein Abnahmetisch 24 angeordnet, auf welchem die Strangabschnitte gegeneinander anstossend für den Abtransport vorbereitet sind. Vom Abnahmetisch 24 werden die Strangabschnitte in der Regel mittels eines Krangehänges oder eines Magneten abgehoben.With each stroke of the piston-cylinder unit 13, in addition to the swivel arm 15 and the swivel lever 10, the pawl tractor 21 is also moved by a pawl distance via a drive lever 23. A removal table 24 is arranged behind the ratchet tractor 21, on which the strand sections are prepared so as to abut against one another for removal. As a rule, the strand sections are lifted off the take-off table 24 by means of a crane hanging device or a magnet.

Die Wirkungsweise dieser Vorrichtung ist wie folgt : Bei einer Hubbewegung der Kolbenzylindereinheit 13 werden durch den Abschiebewagen 4 in diesem Beispiel zwei Stränge von den Auslaufrollgängen 2, 2' abgeräumt und auf die Rutsche 18 bewegt. Mit der gleichen Hubbewegung wird gleichzeitig ein Strangabschnitt 3 von der Einlaufstation 20 auf den Klinkenschlepper 21 angehoben. Der Klinkenschlepper 21 verschiebt bei der gleichen Hubbewegung alle Stränge auf dem Klinkenschlepper 21 um einen Klinkenabstand. Beim Rückwärtshub der Kolbenzylindereinheit 13 kehren der Abschiebewagen 4, der Schwenkarm 15 und Klinkenschlepper 21 in die in den Figuren 1 und 2 mit ausgezogenen Linien dargestellte Position zurück. Bei dieser Zweistranganlage ist vor dem Einlauf neuer Strangabschnitte 3 auf die Auslaufrollgänge 2, 2' ein Leerhub notwendig, um den zweiten Strang zu wenden und auf das Klinkenbett abzuschieben.The operation of this device is as follows: In a lifting movement of the piston-cylinder unit 13, in this example the push-off carriage 4 clears two strands of the run-out roller tables 2, 2 ′ and moves them onto the slide 18. With the same lifting movement, a strand section 3 is simultaneously lifted from the infeed station 20 onto the ratchet tractor 21. The ratchet tractor 21 shifts all strands on the ratchet tractor 21 by a ratchet distance with the same lifting movement. During the reverse stroke of the piston-cylinder unit 13, the push-off carriage 4, the swivel arm 15 and the pawl tractor 21 return to the position shown in solid lines in FIGS. 1 and 2. In this two-strand system, before the entry of new strand sections 3 onto the outlet roller tables 2, 2 ', an idle stroke is necessary in order to turn the second strand and push it onto the jack bed.

In Fig. 3 liegen Strangabschnitte 30, 30', 30" auf einer abfallenden Rutsche 32. Diese drei Strangabschnitte 30, 30', 30" sind mittels eines nicht dargestellten Querschleppers von einer Ebene 31 von nicht dargestellten Austaufrollgängen einer Mehrstranganlage in einem Hub auf die Rutsche 32 geschoben worden. Der Querschlepper könnte beispielsweise eine ähnliche oder gleiche Konstruktion aufweisen wie in Fig. 1 dargestellt und beschrieben. Die Rutsche 32 wirkt in diesem Beispiel mit einem Schwenkarm 35, einer gekrümmten Gleitführung 37 und einem Abschiebekühlbett 38 zusammen. Der Schwenkarm 35 ist um ein Bewegungszentrum 39 über eine Kolbenstange 34 verschwenkbar. Es ist mit drei treppenförmig angeordneten Aufnahmetaschen 41, 41', 41" für die gestaffelte Aufnahme mehrerer Strangabschnitte 30, 30', 30" versehen.In Fig. 3 strand sections 30, 30 ', 30 "lie on a sloping chute 32. These three strand sections 30, 30', 30" are by means of a cross tractor, not shown, from a plane 31 of unrolling reels of a multi-strand system, not shown, in one stroke onto the Slide 32 has been pushed. The cross tractor could, for example, have a similar or the same construction as shown and described in FIG. 1. In this example, the slide 32 interacts with a swivel arm 35, a curved slide guide 37 and a push-off cooling bed 38. The pivot arm 35 can be pivoted about a movement center 39 via a piston rod 34. It is provided with three stair-shaped receiving pockets 41, 41 ', 41 "for the staggered holding of several strand sections 30, 30', 30".

Bei Beginn der Hubbewegung des Schwenkarmes 35 nimmt die Aufnahmetasche 41 den Strangabschnitt 30 mit und führt diesen Strangabschnitt 30 entlang der gekrümmten Gleitführung 37. Erreicht die Aufnahmetasche 41' bzw. 41" die Strangabschnitte 30' bzw. 30", so werden auch diese Strangabschnitte angehoben. Bei der Hubbewegung wirken die Aufnahmetaschen 41, 41' mit der gerkümmten Gleitführung 37, die gegenüber dem Bewegungszentrum 39 exzentrisch angeordnet ist, zusammen. Der Strangabschnitt 30, der in der dem Bewegungszentrum 39 am nächsten liegenden Aufnahmetasche 41 liegt, wird durch die gekrümmte Gleitführung 37 aus der Bewegungsbahn einer inneren Aufnahmetasche 41 herausgehoben und in die Bewegungsbahn der benachbarten äusseren Aufnahmetasche 41' vor den Strangabschnitt 30' geschoben. Dieser Zustand ist in Fig. 2 strichpunktiert dargestellt. Während der weiteren Bewegung des Schwenkarmes 35 schieben sich entlang der gekrümmten Gleitführung 37 die beiden Strangabschnitte 30, 30' vor den Strangabschnitt 30". Mit der Aufnahmetasche 41" des Schwenkarmes 35 wird gleichzeitig die Stossbewegung auf dem Abschiebekühlbett 38 durchgeführt.At the beginning of the lifting movement of the swivel arm 35, the receiving pocket 41 takes the strand section 30 with it and guides this strand section 30 along the curved sliding guide 37. When the receiving pocket 41 'or 41 "reaches the strand sections 30' or 30", these strand sections are also raised . During the lifting movement, the receiving pockets 41, 41 ′ interact with the curved slide guide 37, which is arranged eccentrically with respect to the movement center 39. The strand section 30, which lies in the receiving pocket 41 closest to the movement center 39, is lifted out of the path of movement of an inner receiving pocket 41 by the curved sliding guide 37 and pushed into the path of movement of the adjacent outer receiving pocket 41 'in front of the strand section 30'. This state is shown in broken lines in FIG. 2. During the further movement of the swivel arm 35, the two strand sections 30, 30 'are pushed in front of the strand section 30 "along the curved sliding guide 37. The pushing movement on the push-off cooling bed 38 is carried out simultaneously with the receiving pocket 41" of the swivel arm 35.

Werden bei diesem Beispiel wie in Fig. 1 die Stränge 30 gleichzeitig mit dem Hub des Schwenkarmes 35 durch einen Abschiebewagen von den Auslaufrollgängen abgeräumt, so liegen während des Rückhubes des Schwenkarmes 35 bereits wieder drei neue Strangabschnitte 30 auf der Rutsche 32. Einer davon ist in Kontakt mit einer Anschlagbahn 40 des Schwenkarmes 35. Damit beim Rückhub der Verschleiss dieser Anschlagbahn 40 gering gehalten werden kann, ist diese gegenüber dem Bewegungszentrum 39 so exzentrisch, dass während des Rückhubes, der am Strangabschnitt 30 schleifende Teile der Anschlagbahn 40 in Richtung auf das Bewegungszentrum 39 des Schwenkarmes 35 zurückweicht, wodurch die Reibkraft zwischen der Anschlagbahn 40 und dem nachrutschenden Strangabschnitt 30 vermindert bzw. aufgehoben wird. Eine derartige Exzentrizität ergibt sich, wenn ein Krümmungsmittelpunkt 51 der Anschlagbahn 40 in der Ausgangsstellung tiefer liegt als das Bewegungszentrum 39.If, in this example, as in FIG. 1, the strands 30 are cleared from the run-out roller tables simultaneously with the stroke of the swivel arm 35 by a push-off carriage, three new strand sections 30 are already on the slide 32 during the return stroke of the swivel arm 35. One of them is in Contact with a stop track 40 of the swivel arm 35. In order that the wear of this stop track 40 can be kept low during the return stroke, it is so eccentric with respect to the movement center 39 that during the return stroke the parts of the stop track 40 grinding on the strand section 30 in the direction of the movement center 39 of the swivel arm 35 retreats, as a result of which the frictional force between the stop track 40 and the slipping strand section 30 is reduced or eliminated. Such an eccentricity occurs when a center of curvature 51 of the stop track 40 is lower in the starting position than the center of movement 39.

Claims (9)

1. Equipment for turning lengths of bar (3) and transferring them from a discharge roller bed (2, 2') of a continuous casting installation to an adjacent cooling bed (21), which equipment consists of a transfer carriage (4), displaceable transversely of the direction of travel of the bar, and of a turning mechanism (15, 17, 35), which turns the lengths of bar (3), by means of the swivel arm (15, 35) along a stationary guide (17) which is curved through roughly a quarter circle, characterized in that the transfer carriage (4) pushes the lengths of bar (3, 30) directly from the discharge roller bed (2, 2') on to a chute (18, 32), which is arranged at the side of the discharge roller bed (2, 2') and which guides the lengths of bar (3, 30) to the turning mechanism (15, 17, 35), and in that the swivel arm (15, 35) associated with the turning mechanism (15, 17, 35) lifts the lengths of bar (3, 30), disposed in an intermediate position on the chute (18, 32), on a time-staggered basis.
2. Equipment according to Claim 1, characterized in that the cooling bed consists of a ratchet towing means (21) and of a receiving table (24).
3. Equipment according to Claim 1, characterized in that the swivel arm (35) is also provided for the pushing movement of a transfer cooling bed (38).
4. Equipment according to any one of Claims 1-3, characterized in that the transfer carriage (4) is connected to the swivel arm (15) by way of a lever system.
5. Equipment according to any one of Claims 1-4, characterized in that the swivel arm (35) is provided with a plurality of stepwise arranged receiving pockets (41, 41', 41") for the staggered reception of a plurality of lengths of bar (30, 30', 30"), and in that the path of the stationary guide (37), bent through roughly a quarter circle, is arranged eccentrically in relation to the centre of movement (39) of the swivel arm (35) and extends a path of movement of an inner receiving pocket (41) into a path of movement of an adjacent outer receiving pocket (41').
6. Equipment according to Claim 5, characterized in that the swivel arm (35) comprises, at its outer limit, an eccentrically extending arresting track (40) for stopping and positioning lengths of bar (30) on the chute (32), and in that the centrepoint (51) of the curvature of the arresting track (40) is disposed at a lower level than is the centre of movement (39) in the initial position.
7. Equipment according to Claim 4, characterized in that the lever system consists of a swivel lever (10), which at one end is hinged by way of the swivel arm (15) to the swivel arm drive and, at the other end to a guide rod (9).
8. Equipment according to Claim 7, characterized in that the drive, common to the transfer carriage (4) and the swivel arm (15), consists of a hydraulic piston-and-cylinder unit (13).
9. Equipment according to Claim 2, characterized in that the ratchet towing means (21) and the swivel arm (15) are mechanically connected by means of a drive lever (23).
EP19820104990 1981-06-12 1982-06-08 Device for turning and transferning strand cuts on a parallel cooling bank in a continuous casting plant Expired EP0067400B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH386981A CH653580A5 (en) 1981-06-12 1981-06-12 DEVICE FOR REMOVING STRAND SECTIONS FROM A DISCHARGE ROLLING GEAR OF A CONTINUOUS CASTING SYSTEM.
CH3869/81 1981-06-12

Publications (2)

Publication Number Publication Date
EP0067400A1 EP0067400A1 (en) 1982-12-22
EP0067400B1 true EP0067400B1 (en) 1984-09-05

Family

ID=4265234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820104990 Expired EP0067400B1 (en) 1981-06-12 1982-06-08 Device for turning and transferning strand cuts on a parallel cooling bank in a continuous casting plant

Country Status (3)

Country Link
EP (1) EP0067400B1 (en)
CH (1) CH653580A5 (en)
ES (1) ES514247A0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966568A (en) * 2010-11-26 2011-02-09 中冶赛迪工程技术股份有限公司 Casting blank transverse moving mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106005996B (en) * 2016-06-13 2018-05-01 天津鑫广环保设备制造有限公司 A kind of galvanization production line full-automatic charging machine cast feeder
CN108326250A (en) * 2017-12-13 2018-07-27 中冶连铸技术工程有限责任公司 A kind of steel-pushing apparatus of way moving strand

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1602171B2 (en) * 1967-07-26 1975-05-15 Schloemann-Siemag Ag, 4000 Duesseldorf Transfer device for semi-finished products
IT965687B (en) * 1972-05-04 1974-02-11 Danieli Off Mecc TRANSFER SYSTEM AND PLANT FOR BILLETS COMING FROM CONTINUOUS COLA TA AND ROLLING MILLS BY COMB TRANSFER ORGANS
DE2422366A1 (en) * 1974-05-07 1975-11-20 Mannesmann Meer Ag Moving rolled articles from conveyor - by fast double acting toggle link
DE2723080C2 (en) * 1977-05-21 1982-03-18 Schloemann-Siemag AG, 4000 Düsseldorf Device for pushing off and separating billet sections conveyed in pairs on a feed roller table

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966568A (en) * 2010-11-26 2011-02-09 中冶赛迪工程技术股份有限公司 Casting blank transverse moving mechanism
CN101966568B (en) * 2010-11-26 2012-04-11 中冶赛迪工程技术股份有限公司 Casting blank transverse moving mechanism

Also Published As

Publication number Publication date
ES8307555A1 (en) 1983-08-16
EP0067400A1 (en) 1982-12-22
CH653580A5 (en) 1986-01-15
ES514247A0 (en) 1983-08-16

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