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EP0043365A1 - Starter bar for continuous casting plants - Google Patents

Starter bar for continuous casting plants Download PDF

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Publication number
EP0043365A1
EP0043365A1 EP19810890101 EP81890101A EP0043365A1 EP 0043365 A1 EP0043365 A1 EP 0043365A1 EP 19810890101 EP19810890101 EP 19810890101 EP 81890101 A EP81890101 A EP 81890101A EP 0043365 A1 EP0043365 A1 EP 0043365A1
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EP
European Patent Office
Prior art keywords
end parts
starting
link body
strand
collars
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.)
Granted
Application number
EP19810890101
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German (de)
French (fr)
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EP0043365B1 (en
Inventor
Aktiengesellschaf Voest-Alpine
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Voestalpine AG
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Voestalpine AG
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Publication of EP0043365A1 publication Critical patent/EP0043365A1/en
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Publication of EP0043365B1 publication Critical patent/EP0043365B1/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
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots

Definitions

  • the invention relates to a starting strand for continuous casting plants, in particular steel slab continuous casting plants, with link bodies which are articulated to one another by means of articulation pins, wherein one articulation pin in each case passes through aligned bores of comb-like intermeshing end parts of adjacent link bodies.
  • different strand thicknesses can be used in certain thickness ranges and the same starting line are used, the starting head corresponding to the respective casting thickness being connected to the link body of the starting line.
  • the difference in thickness between the starting head and the link bodies is very large, there must be a plurality of transition link bodies which widen in a wedge shape to the starting head and which must be replaced together with the starting head. Up to now, these transition links have also been replaced by removing the link pins connecting the link bodies.
  • the starting head is designed as a "permanent head", i.e. the starting head is in a direct cast connection with the cast strand and can be detached from the cast strand by means of a separating device arranged in the strand guide. After loosening, the start-up strand is conveyed out of the strand guide by means of a lifting device, for example by means of a crane or a seesaw.
  • the invention aims at avoiding these disadvantages and difficulties and has as its object to create a starting strand of the type described above, which is divided into two or more parts transversely to its longitudinal axis easily, quickly and without great effort, in particular without destroying a limb body can be.
  • a permanent head it should also be possible to avoid casting termination if the permanent head cannot be separated from the cast strand, and both the start-up strand and the cast strand should always be able to run separately from the separation point provided in the system.
  • end parts of a link body are provided with laterally projecting collars against the end parts of the adjacent link body and peripherally surrounding the bore, the collars resting on support surfaces from recesses open to the top of the approach line at the end parts of the adjacent link body .
  • the laterally projecting collars are formed by bushings inserted into the end parts of the link body and the recesses are U-shaped.
  • hinge pin passes through the bores of the end parts of the two adjacent link bodies with radial play.
  • an outwardly widening conical extension is expediently provided on the hinge bolt at one end and a conical hole corresponding to this conical extension is provided in the bore of an end part of a link body, the conical bore advantageously being a conical inner bore a holding sleeve inserted in an end part of the link body is formed.
  • the collars arranged on the outside have centering shoulders for the articulation pin.
  • Fig. 1 '2 show a side view
  • Fig. I a plan view of a starter bar in a schematic representation
  • Fig. 3- represents a section along the line III-III of Fig. 2
  • Fig. 4 illustrates the process of releasing the starting head from the starting line.
  • the starting head is designated by 1, which is connected by means of a transition link body 2 to a link chain 3 which is composed of further link bodies 4 which are connected to one another in an articulated manner.
  • Two adjacent link bodies 1, 2, 4 each have comb-like intermeshing end parts 5, 6.
  • One of the limb bodies, etc. the one on the first limb body, the start Head 1, adjoining transition member body 2, has at its end parts 6 laterally projecting, against the end parts 5 of the start head 1 collars 7.
  • These bundles 7 are formed by bushes 8 inserted into the end parts of the link body, the length 9 of which is greater than the thickness 10 of the end parts 6.
  • Each of the bundles 7 projects into a recess 11, which is provided on each of the end parts 5 of the starting head 1 are.
  • These recesses 11 are U-shaped in cross section and open toward the top 12 of the start-up line.
  • the bundles 7 lie on support surfaces 13, which are provided at the base of these recesses 11, in the end parts 5 of the starting head, so that there is no or almost no play in the longitudinal direction 14 of the starting strand.
  • the intermeshing end parts 5, 6 of the two adjacent link bodies 1, 2 have mutually aligned bores 15, 16, the bores 16 penetrating the sleeves 8 centrally.
  • a hinge pin 17 is inserted, which has a radial clearance 18, 19 compared to the bores 15, 16.
  • One end 20 of the hinge pin 17 is tapered towards the end for easier insertion into the bores 15, 16; the other opposite end 21 of the hinge pin has a shoulder 22 which widens conically towards the end 21 of the hinge pin 17.
  • the hinge pin fits into a conical inner bore of a holding bush 23 inserted at a lateral end part of the start-up head 23 on, which, however, to allow easy loosening of the hinge pin, only extend over a short length 25 of these bushings.
  • the hinge pin 17 is to be loosened by hitting and then axially pulled out of the bores 15, 16, which can be done easily by hand, since the hinge pin 17 only rests on the two centering lugs 24 and on the holding bush 23 with friction.
  • the starting strand can be easily detached from the starting head 1 by moving the starting strand approximately perpendicular to the upper side 12, the bundles 7 sliding out of the recesses 11. During this separation process, there is only a line contact between the collars 7 and the recesses 11, so that the frictional forces that occur are only slight and cannot hinder the separation process even after prolonged use of the starting strand.
  • the hinge pin 17 itself does not need the starting strand. absorb forces as tensile forces when pulling out of the strand guide; these are transferred from the bundles 7 of the link body 2 to the starting head 1.
  • the hinge pin 17 only has the function of preventing the inadvertent removal of the starting head 1 from the link body 2.
  • Fig. 4 the separation process of the starting strand from the starting head is illustrated.
  • the start-up line is conveyed onto a rocker 26.
  • the start head 1 is still connected to the cast strand 27 during this process, it being assumed that the connection between the start head 1 and the cast strand 27, although it is a permanent start head, cannot be broken due to a defect.
  • the hinge pin 17 is knocked out and the rocker is pivoted from the position A shown in full lines in FIG. 4 into the position B shown in dash-dotted lines.
  • the collars 7 slide out of the recesses 11, so that the cast strand 27 undisturbed along the roll transition can be discharged in the direction of arrow 29 and 28 of the casting g Anfahrstran not further obstructed.
  • the easily removable hinge pins 17 and the bundles 7 sliding out of the start head thus make it possible to separate the cast strand from the start strand without a flame cutting device for the cast strand being required in front of the rocker 26 receiving the start strand (or other lifting device for the start strand).
  • the flame cutting device can be provided after the device 26 receiving the start-up line, which results in shorter conveying paths for the start-up line.
  • connection of the starting head 1 shown in the drawing to the adjacent link body 2 can also be provided between any other link bodies 2, 4 of the starting line.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Continuous Casting (AREA)

Abstract

1. A starter bar for continuous casting plants, in particular steel slab continuous casting plants, comprising link bodies (1, 2, 4) articulately interconnected by means of hinge pins (17), one hinge pin (17) each penetrating aligning bores (15, 16) of comb-like engaging end parts (5, 6) of neighbouring link bodies (1, 2), characterized in that the end parts (6) of a link body (2) are provided with collars (7) laterally cantilevering towards the end parts (5) of the neighbouring link body (1), peripherally surrounding the bore (16) and accommodating extraction forces, the collars (7) abutting on supporting surfaces (13) of recesses (11) provided on the end parts (5) of the neightbouring link body (1) and open towards the upper side (12) of the starter bar.

Description

Die Erfindung betrifft einen Anfahrstrang für Stranggießanlagen, insbesondere Stahlbrammen-Stranggießanlagen, mit untereinander mittels Gelenkbolzen gelenkig verbundenen Gliederkörpern, wobei jeweils ein Gelenkbolzen fluchtende Bohrungen kammartig ineinandergreifender Endteile benachbarter Gliederkörper durchsetzt.The invention relates to a starting strand for continuous casting plants, in particular steel slab continuous casting plants, with link bodies which are articulated to one another by means of articulation pins, wherein one articulation pin in each case passes through aligned bores of comb-like intermeshing end parts of adjacent link bodies.

Bei einem Anfahrstrang dieser Art bereitet das Trennen der Gliederkörper Schwierigkeiten, insbesondere dann, wenn der Anfahrstrang schon lange Zeit in Verwendung ist. Die die Gliederkörper verbindenden Gelenkbolzen, die zum Zweck des Trennens entfernt werden müssen, lassen sich, insbesondere bei Anfahrsträngen für Brammenstranggießanlagen, nur mehr mittels hydraulischer Pressen herausdrücken, was umständlich und zeitraubend ist. Dieser Ausbau der Gelenkbolzen gestaltet sich meist wegen Passungsrost bzw. geringfügiger Deformationen äußerst schwierig und macht eine Reparatur durch Aufbohren der Bohrungen für die Bolzen und die Einpassung eines Bolzens größeren Durchmessers notwendig. Wenn man'eine Schnelltrennung des Anfahrstranges vornehmen will, muß man einen der Gliederkörper zerstören, beispielsweise durch einen Brennschnitt.With a start-up line of this type, it is difficult to separate the link bodies, especially if the start-up line has been in use for a long time. The joint pins connecting the link bodies, which have to be removed for the purpose of separation, can only be pressed out using hydraulic presses, especially in the case of starting strands for slab caster systems, which is cumbersome and time-consuming. This removal of the hinge pins is mostly extremely difficult due to fretting corrosion or slight deformations and makes repairs necessary by drilling the holes for the bolts and fitting a larger diameter bolt. If you want to quickly disconnect the start-up line, you have to destroy one of the link bodies, for example by a flame cut.

Ein weiteres Problem besteht bei Stranggießanlagen, die zur Erzeugung von Gußsträngen mit verschiedenen Dicken eingerichtet sind. Bei solchen Anlagen kann für unterschiedliche Strangdicken in gewissen Dickenbereichen ein und derselbe Anfahrstrang verwendet werden, wobei der der jeweiligen Gießdicke entsprechende Anfahrkopf an die Gliederkörper des Anfahrstranges angeschlossen wird. Ist der Dickenunterschied zwischen Anfahrkopf und den Gliederkörpern sehr groß, müssen mehrere, sich keilförmig zum Anfahrkopf erweiternde Übergangsgliederkörper vorhanden sein, die zusammen mit dem Anfahrkopf ausgewechselt werden müssen. Das Wechseln dieser Übergangsglieder erfolgte bisher ebenfalls durch Ausbau der die Gliederkörper verbindenden Gelenkbolzen.A further problem exists with continuous casting plants which are set up to produce cast strands with different thicknesses. In such systems, different strand thicknesses can be used in certain thickness ranges and the same starting line are used, the starting head corresponding to the respective casting thickness being connected to the link body of the starting line. If the difference in thickness between the starting head and the link bodies is very large, there must be a plurality of transition link bodies which widen in a wedge shape to the starting head and which must be replaced together with the starting head. Up to now, these transition links have also been replaced by removing the link pins connecting the link bodies.

Bei modernen Stranggießanlagen ist.der Anfahrkopf als "Permanentkopf" ausgebildet, d.h. der Anfahrkopf steht in direktem Guß-Verbund mit dem Gußstrang und kann mittels einer in der Strangführühg angeordneten Trennvorrichtung vom Gußstrang gelöst werden. Nach dem Lösen wird der Anfahrstrang mittels einer Hubeinrichtung, beispielsweise mittels eines Kranes oder einer Wippe, von der Strangführung ausgefördert.In modern continuous casting plants, the starting head is designed as a "permanent head", i.e. the starting head is in a direct cast connection with the cast strand and can be detached from the cast strand by means of a separating device arranged in the strand guide. After loosening, the start-up strand is conveyed out of the strand guide by means of a lifting device, for example by means of a crane or a seesaw.

Bei Verwendung eines Permanentkopfes kann es passieren, daß der Permanentkopf mit dem Gußstrang verschweißt, sodaß sich der Permanentkopf vom Gußstrang nicht mehr ohne weitereslösen läßt. Man hat daher bisher bei mit Permanentkopf ausgerüsteten Stranggießanlagen dafür Sorge tragen müssen, daß auch im Falle des Verschweißens Permanentkopf - Gußstrang ein Trennen des Anfahrstranges vom Gußstrang möglich ist. Einer solchen Notsituation wurde in der Regel dadurch Rechnung getragen, indem man den Anfahrstrang vom Gußstrang mittels der für den Gußstrang vorgesehenen Schneideinrichtung getrennt hat. Es war also notwendig, den Anfahrstrang noch über den mit der Schneideinrichtung für den Gußstrang vorgesehenen Strangführungsteil, der bei Brammenstranggießanlagen als Brennschneidrollgang ausgebildet ist, zu führen. Dadurch ergibt sich einerseits, wenn man zu Gießbeginn den Anfahrstrang von unten durch die Strangführung in die Kokille einfädeln will, ein langer Transportweg für den Anfahrstrang und damit eine lange Rüstzeit vor Gießbeginn., oder anderseits, wenn der Anfahrstrang mittels einer Hubeinrichtung vom Auslaufrollgang abgehoben und von oben in die Kokille eingefädelt wird, eine aufwendige Konstruktion für eine Einrichtung zum Zuführen des Anfahrstranges in die Kokille. Wollte man den Anfahrstrang bei Verwendung eines Permanentkopfes schon vor dem eine Schneideinrichtung aufweisenden Strangführungsteil aus der Strangführung entfernen, beispielsweise mittels einer in die Strangführung reichenden Wippe etc., so wäre man gezwungen, bei Verschweißen oder Verklemmen des Permanentkopfes mit dem Schopfanfang des Gußstranges das Gießen abzubrechen, da andernfalls der -Gußstrang dem Anfahrstrang auf die Wippe folgen müßte.When using a permanent head, it can happen that the permanent head is welded to the cast strand, so that the permanent head can no longer be easily detached from the cast strand. So far it has been necessary to ensure that continuous casting equipment equipped with a permanent head ensures that even in the case of permanent head-casting casting welding, it is possible to separate the starting string from the casting string. Such an emergency situation was generally taken into account by separating the starting strand from the cast strand by means of the cutting device provided for the cast strand. It was therefore necessary to guide the start-up strand over the strand guide part provided with the cutting device for the cast strand, which is designed as a flame cutting roller table in slab caster systems. This results, on the one hand, when the starting strand of wants to thread through the strand guide into the mold, a long transport path for the start-up strand and thus a long set-up time before the start of casting., or on the other hand, if the start-up strand is lifted from the run-out roller conveyor and threaded into the mold from above, a complex construction for a device for feeding the starting strand into the mold. If you wanted to remove the start-up strand from the strand guide before using the strand guide part that has a cutting device, for example by means of a rocker extending into the strand guide, you would be forced to stop casting when the permanent head is welded or jammed to the top of the cast strand , otherwise the casting line would have to follow the start line on the rocker.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, einen Anfahrstrang der eingangs beschriebenen Art. zu schaffen, der leicht, schnell und ohne großen Aufwand, insbesondere ohne Zerstörung eines Gliederkörpers, in zwei oder mehrere Teile quer zu seiner Längsachse geteilt werden kann. Insbesondere soll sich bei Verwendung eines Permanentkopfes ein Gießabbruch auch dann vermeiden lassen, wenn sich der Permanentkopf nicht vom Gußstrang trennen läßt und sollen sowohl Anfahrstrang und Gußstrang von der in der Anlage vorgesehenen Trennstelle an stets getrennte Wege laufen können.The invention aims at avoiding these disadvantages and difficulties and has as its object to create a starting strand of the type described above, which is divided into two or more parts transversely to its longitudinal axis easily, quickly and without great effort, in particular without destroying a limb body can be. In particular, if a permanent head is used, it should also be possible to avoid casting termination if the permanent head cannot be separated from the cast strand, and both the start-up strand and the cast strand should always be able to run separately from the separation point provided in the system.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Endteile eines Gliederkörpers mit seitlich gegen die Endteile des benachbarten Gliederkörpers auskragenden und die Bohrung peripher umgebenden Bunden versehen sind, wobei die Bunde an Stützflächen von zur Oberseite des Anfahrstranges hin offenen Ausnehmungen an den Endteilen des benachbarten Gliederkörpers anliegen.This object is achieved in that the end parts of a link body are provided with laterally projecting collars against the end parts of the adjacent link body and peripherally surrounding the bore, the collars resting on support surfaces from recesses open to the top of the approach line at the end parts of the adjacent link body .

Nach einer bevorzugten Ausführungsform sind die seitlich auskragenden Bunde von in die Endteile des Gliederkörpers eingesetzten Büchsen gebildet und die Ausnehmungen U-förmig ausgebildet.According to a preferred embodiment, the laterally projecting collars are formed by bushings inserted into the end parts of the link body and the recesses are U-shaped.

Für ein besonders leichtes Lösen ist es zweckmäßig, wenn der Gelenkbolzen die Bohrungen der Endteile der beiden benachbarten Gliederkörper mit radialem Spiel durchsetzt.For a particularly easy release, it is expedient if the hinge pin passes through the bores of the end parts of the two adjacent link bodies with radial play.

Zur leicht lösbaren Fixierung des Gelenkbolzens ist zweckmäßig an dem Gelenkbolzen an einem Ende ein sich nach außen hin erweiternder konischer Ansatz vorgesehen und in der Bohrung eines Endteiles eines Gliederkörpers eine zu diesem konischen Ansatz korrespondierende konische Bohrung vorgesehen, wobei vorteilhaft die konische Bohrung als .konische Innenbohrung einer in einem Endteil des.Gliederkörpers eingesetzten Haltebüchse ausgebildet ist.For easily releasable fixing of the hinge pin, an outwardly widening conical extension is expediently provided on the hinge bolt at one end and a conical hole corresponding to this conical extension is provided in the bore of an end part of a link body, the conical bore advantageously being a conical inner bore a holding sleeve inserted in an end part of the link body is formed.

Um den Zusammenbau des Anfahrstranges zu erleichtern, weisen die außenseitig angeordneten Bunde Zentrieransätze für den Gelenkbolzen auf.In order to facilitate the assembly of the start-up line, the collars arranged on the outside have centering shoulders for the articulation pin.

Die Erfindung ist nachfolgend anhand der Zeichnung näher erläutert, wobei Fig. 1 eine Seitenansicht und Fig.' 2 eine Draufsicht auf einen Anfahrstrang in schematischer Darstellung zeigen. Fig. 3-stellt einen Schnitt gemäß der Linie III-III der Fig. 2 dar; Fig. 4 veranschaulicht den Lösevorgang des Anfahrkopfes vom Anfahrstrang.The invention is explained in more detail with reference to the drawing, in which Fig. 1 '2 show a side view and Fig. Is a plan view of a starter bar in a schematic representation. Fig. 3-represents a section along the line III-III of Fig. 2; Fig. 4 illustrates the process of releasing the starting head from the starting line.

Mit 1 ist der Anfahrkopf bezeichnet, der mittels eines Übergangsgliederkörpers 2 an eine Gliederkette 3 angeschlossen ist, die aus miteinander gelenkig verbundenen weiteren Gliederkörpern 4 zusammengesetzt ist. Jeweils zwei benachbarte Gliederkörper 1, 2, 4 weisen kammartig ineinandergreifende Endteile 5, 6 auf. Einer der Gliederkörper, u.zw. der an den ersten Gliederkörper, den Anfahrkopf 1, anschließende Übergangsgliederkörper 2, weist an seinen Endteilen 6 seitlich auskragende, gegen die Endteile 5 des Anfahrkopfes 1 gerichtete Bunde 7 auf. Diese Bunde 7.werden durch in die Endteile des Gliederkörpers eingesetzte Büchsen 8 gebildet, deren Länge 9 größer ist als die Dicke 10 der Endteile 6. Jeder der Bunde 7 ragt jeweils in eine Ausnehmung 11, die an jedem der Endteile 5 des Anfahrkopfes 1 vorgesehen sind. Diese Ausnehmungen 11 sind im Querschnitt U-förmig ausgebildet und zur Oberseite 12 des Anfahrstranges hin offen. Die Bunde 7 liegen an Stützflächen 13, die am Grund dieser Ausnehmungen 11 vorgesehen sind, satt in den Endteilen 5 des Anfahrkopfes., sodaß kein bzw. nahezu kein Spiel in Längsrichtung 14.des Anfahrstranges vorhanden ist.The starting head is designated by 1, which is connected by means of a transition link body 2 to a link chain 3 which is composed of further link bodies 4 which are connected to one another in an articulated manner. Two adjacent link bodies 1, 2, 4 each have comb-like intermeshing end parts 5, 6. One of the limb bodies, etc. the one on the first limb body, the start Head 1, adjoining transition member body 2, has at its end parts 6 laterally projecting, against the end parts 5 of the start head 1 collars 7. These bundles 7 are formed by bushes 8 inserted into the end parts of the link body, the length 9 of which is greater than the thickness 10 of the end parts 6. Each of the bundles 7 projects into a recess 11, which is provided on each of the end parts 5 of the starting head 1 are. These recesses 11 are U-shaped in cross section and open toward the top 12 of the start-up line. The bundles 7 lie on support surfaces 13, which are provided at the base of these recesses 11, in the end parts 5 of the starting head, so that there is no or almost no play in the longitudinal direction 14 of the starting strand.

Die ineinandergreifenden Endteile 5, 6 der beiden benachbarten Gliederkörper 1, 2 weisen zueinander fluchtende Bohrungen 15, 16 auf, wobei die Bohrungen 16 die Büchsen 8 zentral durchsetzen. In diese Bohrungen 15, 16 ist ein Gelenkbolzen 17 eingesetzt, der gegenüber den Bohrungen 15, 16 ein radiales Spiel 18, 19 aufweist. Ein Ende 20 des Gelenkbolzens 17 ist zum leichteren Einführen in die Bohrungen 15, 16 zum Ende hin kegelförmig verjüngt; das andere gegenüberliegende Ende 21 des Gelenkbolzens weist einen sich zum Ende 21 des Gelenkbolzens 17 hin konisch erweiternden Ansatz 22 auf. Mit diesem Ansatz 22 paßt der Gelenkbolzen in eine konische Innenbohrung einer an einem seitlichen Endteil des Anfahrkopfes eingesetzten Haltebüchse 23. Damit der Gelenkbolzen 17 nicht in den Bohrungen schlottert, weisen die an den seitlichen Endteilen 6 des Gliederkörpers 2 vorgesehenen Büchsen 8 Zentrieran-, sätze 24 auf, die sich jedoch, um ein leichtes Lösen des Gelenkbolzens zu ermöglichen, nur über eine geringe Länge 25 dieser Büchsen erstrecken.The intermeshing end parts 5, 6 of the two adjacent link bodies 1, 2 have mutually aligned bores 15, 16, the bores 16 penetrating the sleeves 8 centrally. In these bores 15, 16, a hinge pin 17 is inserted, which has a radial clearance 18, 19 compared to the bores 15, 16. One end 20 of the hinge pin 17 is tapered towards the end for easier insertion into the bores 15, 16; the other opposite end 21 of the hinge pin has a shoulder 22 which widens conically towards the end 21 of the hinge pin 17. With this approach 22, the hinge pin fits into a conical inner bore of a holding bush 23 inserted at a lateral end part of the start-up head 23 on, which, however, to allow easy loosening of the hinge pin, only extend over a short length 25 of these bushings.

Zum Lösen des Anfahrkopfes 1 vom benachbarten Gliederkörper 2 ist lediglich der Gelenkbolzen 17 durch Schlagen zu lockern und anschließend axial aus den Bohrungen 15, 16 herauszuziehen, was leicht von Hand aus erledigt werden kann, da der Gelenkbolzen 17 nur an den beiden Zentrieransätzen 24 sowie an der Haltebüchse 23 mit Reibung anliegt. Nach Entfernen des Gelenkbolzens 17 läßt sich der Anfahrstrang vom Anfahrkopf 1 leicht durch eine Bewegung des Anfahrstranges etwa senkrecht zur Oberseite 12 lösen, wobei die Bunde 7 aus den Ausnehmungen 11 herausgleiten. Während dieses Trennvorganges herrscht zwischen den Bunden 7 und den Ausnehmungen 11 nur eine Linienberührung, sodaß die dabei auftretenden Reibungskräfte nur gering sind und auch nach längerem Gebrauch des Anfahrstranges nicht den Trennvorgang behindern können.To release the start head 1 from the adjacent link body per 2, only the hinge pin 17 is to be loosened by hitting and then axially pulled out of the bores 15, 16, which can be done easily by hand, since the hinge pin 17 only rests on the two centering lugs 24 and on the holding bush 23 with friction. After the hinge pin 17 has been removed, the starting strand can be easily detached from the starting head 1 by moving the starting strand approximately perpendicular to the upper side 12, the bundles 7 sliding out of the recesses 11. During this separation process, there is only a line contact between the collars 7 and the recesses 11, so that the frictional forces that occur are only slight and cannot hinder the separation process even after prolonged use of the starting strand.

Der Gelenkbolzen 17 selbst braucht keine, den Anfahrstrang . beim Ausziehen aus der Strangführung als Zugkräfte belastenden Kräfte aufzunehmen; diese werden von den Bunden 7 des Gliederkörpers 2 auf den Anfahrkopf 1. übertragen. Der Gelenkbolzen 17 hat lediglich die Funktion, ein unbeabsichtigtes Entfernen des Anfahrkopfes 1 vom Gliederkörper 2 zu verhindern.The hinge pin 17 itself does not need the starting strand. absorb forces as tensile forces when pulling out of the strand guide; these are transferred from the bundles 7 of the link body 2 to the starting head 1. The hinge pin 17 only has the function of preventing the inadvertent removal of the starting head 1 from the link body 2.

In Fig. 4 ist der Trennvorgang des Anfahrstranges vom Anfahrkopf veranschaulicht. Der Anfahrstrang wird auf eine Wippe 26 ausgefördert. Der Anfahrkopf 1 ist noch während dieses Vorganges mit dem Gußstrang 27 verbunden, wobei angenommen wird, daß sich die Verbindung zwischen Anfahrkopf 1 und Gußstrang 27, obwohl es sich um einen Permanent-Anfahrkopf handelt, infolge eines Defektes nicht lösen läßt. In einem solchen Fall wird der Gelenkbolzen 17 herausgeschlagen und die Wippe von der in Fig."4 mit vollen Linien dargestellten Lage A in die strichpunktiert dargestellte Lage B geschwenkt. Die Bunde 7 gleiten bei diesem Schwenkvorgang aus den Ausnehmungen 11 heraus, sodaß der Gußstrang-27 ungestört weiter entlang des Rollganges 28 in Pfeilrichtung 29 ausgefördert werden kann und der Anfahrstrang den Gießbetrieb nicht weiter behindert. Die leicht entfernbaren Gelenkbolzen 17 und die aus dem Anfahrkopf herausgleitenden Bunde 7 machen es somit möglich, den Gußstrang vom Anfahrstrang zu trennen, ohne daß vor der den Anfahrstrang aufnehmenden Wippe 26 (oder sonstigen Hubeinrichtung für den Anfahrstrang) eine Brennschneideinrichtung für den Gußstrang erforderlich ist. Die Brennschneideinrichtung kann nach der den Anfahrstrang aufnehmenden Einrichtung 26 vorgesehen sein, wodurch sich für den Anfahrstrang kürzere Förderwege ergeben.In Fig. 4 the separation process of the starting strand from the starting head is illustrated. The start-up line is conveyed onto a rocker 26. The start head 1 is still connected to the cast strand 27 during this process, it being assumed that the connection between the start head 1 and the cast strand 27, although it is a permanent start head, cannot be broken due to a defect. In such a case, the hinge pin 17 is knocked out and the rocker is pivoted from the position A shown in full lines in FIG. 4 into the position B shown in dash-dotted lines. During this pivoting operation, the collars 7 slide out of the recesses 11, so that the cast strand 27 undisturbed along the roll transition can be discharged in the direction of arrow 29 and 28 of the casting g Anfahrstran not further obstructed. The easily removable hinge pins 17 and the bundles 7 sliding out of the start head thus make it possible to separate the cast strand from the start strand without a flame cutting device for the cast strand being required in front of the rocker 26 receiving the start strand (or other lifting device for the start strand). The flame cutting device can be provided after the device 26 receiving the start-up line, which results in shorter conveying paths for the start-up line.

Die in der Zeichnung dargestellte Verbindung des Anfahrkopfes 1 mit dem benachbarten Gliederkörper 2 kann auch zwischen beliebigen anderen Gliederkörpern 2, 4 des Anfahrstranges vorgesehen werden.The connection of the starting head 1 shown in the drawing to the adjacent link body 2 can also be provided between any other link bodies 2, 4 of the starting line.

Claims (7)

1. Anfahrstrang für Stranggießanlagen, insbesondere.Stahlbrammen-Stranggießanlagen, mit untereinander mittels Gelenkbolzen (17) gelenkig verbundenen Gliederkörpern (1, 2, 4), wobei jeweils ein Gelenkbolzen (17) fluchtende Bohrungen (15, 16) kammartig ineinandergreifender Endteile (5., 6) benachbarter Gliederkörper (1, 2) durchsetzt, dadurch gekennzeichnet, daß die Endteile (6) eines Gliederkörpers (2) mit seitlich gegen die Endteile (5) des benachbarten Gliederkörpers (1) ausragenden und die Bohrung (16) peripher umgebenden Bunden (7) versehen sind, wobei die Bunde (7) an Stützflächen.(13) von zur Oberseite (12) des Anfahrstranges hin offenen Ausnehmungen (11) an den Endteilen (5) des benachbarten Gliederkörpers (1) anliegen.1. Starting line for continuous casting plants, in particular steel slab continuous casting plants, with link bodies (1, 2, 4) articulated to one another by means of articulated bolts (17), whereby one articulated bolt (17) each has aligned bores (15, 16) of intermeshing end parts (5. , 6) adjacent link body (1, 2), characterized in that the end parts (6) of a link body (2) with laterally projecting against the end parts (5) of the adjacent link body (1) and peripherally surrounding the bore (16) (7) are provided, the collars (7) abutting support surfaces. (13) from recesses (11) which are open towards the top (12) of the starting strand against the end parts (5) of the adjacent link body (1). 2. Anfahrstrang nach Anspruch 1, dadurch gekennzeichnet, daß die seitlich auskragenden Bunde (7) von in die Endteile (6) des Gliederkörpers (2) eingesetzten Büchsen (8) gebildet sind.2. Starting strand according to claim 1, characterized in that the laterally projecting collars (7) are formed by bushes (8) inserted into the end parts (6) of the link body (2). 3. Anfahrstrang nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ausnehmungen (11) U-förmig ausgebildet sind.3. Starting line according to claim 1 or 2, characterized in that the recesses (11) are U-shaped. 4. Anfahrstrang nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Gelenkbolzen (17) die Bohrungen (15, 16) der Endteile (5, 6) der beiden benachbarten Gliederkörper (1, 2) mit radialem Spiel (18, 19) durchsetzt.4. Starting strand according to claims 1 to 3, characterized in that the hinge pin (17), the bores (15, 16) of the end parts (5, 6) of the two adjacent link bodies (1, 2) with radial play (18, 19) enforced. 5. Anfahrstrang nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß an dem Gelenkbolzen (17) an einem Ende (21) ein sich nach außen hin erweiternder konischer Ansatz (22) vorgesehen ist und in der Bohrung (15) eines Endteiles (5) eines Gliederkörpers (1) eine zu diesem konischen Ansatz (22) korrespondierende konische Bohrung vorgesehen ist.5. Starting line according to claims 1 to 4, characterized in that on the hinge pin (17) at one end (21) an outwardly widening conical extension (22) is provided and in the bore (15) of an end part (5) of a link body (1) a conical bore corresponding to this conical extension (22) is provided. 6. Anfahrstrang nach Anspruch 5, dadurch gekennzeichnet, daß die konische Bohrung als konische Innenbohrung einer in einem Endteil (5) des Gliederkörpers (1) eingesetzten Haltebüchse (23) ausgebildet ist.6. Starting strand according to claim 5, characterized in that the conical bore is designed as a conical inner bore of a holding bush (23) used in an end part (5) of the link body (1). 7. Anfahrstrang nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die außenseitig angeordneten Bunde (7) Zentrieransätze (24) für den Gelenkbolzen (17) aufweisen.7. Starting line according to claims 1 to 5, characterized in that the collars (7) arranged on the outside have centering shoulders (24) for the hinge pin (17).
EP19810890101 1980-06-30 1981-06-16 Starter bar for continuous casting plants Expired EP0043365B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3410/80 1980-06-30
AT341080A AT364473B (en) 1980-06-30 1980-06-30 ACCESS LINE FOR CONTINUOUS CASTING PLANTS

Publications (2)

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EP0043365A1 true EP0043365A1 (en) 1982-01-06
EP0043365B1 EP0043365B1 (en) 1984-03-07

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EP19810890101 Expired EP0043365B1 (en) 1980-06-30 1981-06-16 Starter bar for continuous casting plants

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EP (1) EP0043365B1 (en)
JP (1) JPS5731451A (en)
AT (1) AT364473B (en)
DE (1) DE3162503D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023503B3 (en) * 2005-06-08 2007-02-01 Voest-Alpine Industrieanlagenbau Gmbh & Co. Start-up chain assembly for continuous casting plant, comprises head and tapered transition section forming interchangeable component with limited-swing hinged joint
US8167025B2 (en) 2008-04-02 2012-05-01 Sms Siemag Ag Dummy bar for a continuous casting installation and method of using the same
CN106925734A (en) * 2015-12-31 2017-07-07 宁波创润新材料有限公司 The manufacture method of dummy bar head
CN108393447A (en) * 2018-05-31 2018-08-14 鞍山市泰和连铸机械有限公司 Prevent dummy bar head to inner arc tilting gearing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3297902B2 (en) * 1996-06-18 2002-07-02 オークマ株式会社 Embedded plug for screw hole

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DE1925010B2 (en) * 1969-05-16 1977-04-14 Schloemann-Siemag AG, 4000 Düsseldorf CONNECTION FOR SECTIONS OF ACCESS ROADS
DE2701164A1 (en) * 1976-01-16 1977-07-21 Voest Ag APPROACH
DE2716236A1 (en) * 1976-04-30 1977-11-17 Voest Ag STARTING LINE FOR EXTRACTION OF CASTING BARS
DE2853265A1 (en) * 1977-12-14 1979-06-21 Voest Ag ACCESS LINE FOR CONTINUOUS CASTING PLANTS

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1925010B2 (en) * 1969-05-16 1977-04-14 Schloemann-Siemag AG, 4000 Düsseldorf CONNECTION FOR SECTIONS OF ACCESS ROADS
DE2701164A1 (en) * 1976-01-16 1977-07-21 Voest Ag APPROACH
AT340083B (en) * 1976-01-16 1977-11-25 Voest Ag APPROACH
US4074745A (en) * 1976-01-16 1978-02-21 Vereinigte Osterreichische Eisen- Und Stahlwerke - Alpine Montan Aktiengesellschaft Starter bar for guiding and extracting cast strands of various thicknesses
DE2716236A1 (en) * 1976-04-30 1977-11-17 Voest Ag STARTING LINE FOR EXTRACTION OF CASTING BARS
DE2853265A1 (en) * 1977-12-14 1979-06-21 Voest Ag ACCESS LINE FOR CONTINUOUS CASTING PLANTS
GB2010150A (en) * 1977-12-14 1979-06-27 Voest Alpine Montan Ag Starter bar

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023503B3 (en) * 2005-06-08 2007-02-01 Voest-Alpine Industrieanlagenbau Gmbh & Co. Start-up chain assembly for continuous casting plant, comprises head and tapered transition section forming interchangeable component with limited-swing hinged joint
US8167025B2 (en) 2008-04-02 2012-05-01 Sms Siemag Ag Dummy bar for a continuous casting installation and method of using the same
CN106925734A (en) * 2015-12-31 2017-07-07 宁波创润新材料有限公司 The manufacture method of dummy bar head
CN106925734B (en) * 2015-12-31 2019-12-20 宁波创润新材料有限公司 Method for manufacturing dummy bar head
CN108393447A (en) * 2018-05-31 2018-08-14 鞍山市泰和连铸机械有限公司 Prevent dummy bar head to inner arc tilting gearing
CN108393447B (en) * 2018-05-31 2023-10-24 鞍山市泰和连铸机械有限公司 Device for preventing dummy ingot head from tilting to inner arc

Also Published As

Publication number Publication date
AT364473B (en) 1981-10-27
JPS5731451A (en) 1982-02-19
EP0043365B1 (en) 1984-03-07
DE3162503D1 (en) 1984-04-12
ATA341080A (en) 1981-03-15

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