EP1179377B1 - Withdrawal device for a ladle ceramic plug - Google Patents
Withdrawal device for a ladle ceramic plug Download PDFInfo
- Publication number
- EP1179377B1 EP1179377B1 EP01111388A EP01111388A EP1179377B1 EP 1179377 B1 EP1179377 B1 EP 1179377B1 EP 01111388 A EP01111388 A EP 01111388A EP 01111388 A EP01111388 A EP 01111388A EP 1179377 B1 EP1179377 B1 EP 1179377B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- claws
- tube
- extraction apparatus
- swivelling
- disposed
- 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 - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/52—Manufacturing or repairing thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle
Definitions
- the invention relates to a pull-out device for a refractory molded part, which is in a wall or in the bottom of a metallurgical vessel is installed, for example a pouring sleeve such as a slide inner sleeve.
- European Patent 0 271 474 B1 discloses an apparatus for Removal of metallurgical vessels inserted into the tap hole Perforated bricks.
- the device has one extending into the perforated brick Pull-out device by means of a hydraulic cylinder is longitudinally adjustable. At her, to the inside of the metallurgical vessel leading end are attached to the device two clamping claws with the perforated brick can be brought into engagement.
- the invention has for its object a pull-out device to offer the kind mentioned, with the physical strain for the staff when replacing such a refractory molding is reduced, the simple is to use and meets the usual safety requirements.
- the basic idea of the invention is that of the refractory molded part to be replaced break out of its mounting position using traction.
- the invention is based on the idea of a continuous opening of the Use molded parts to pass a tool and this then clamp it radially so that it is the molded part to be removed overlaps, which are then pulled out using train can.
- the invention in its most general embodiment relates to one Pull-out device for a fireproof molded part, which in a wall or in a bottom of a metallurgical vessel is installed, with the features according to claim 1.
- the tube mentioned fulfills two functions: on the one hand, it serves as Inclusion of the claws and the associated device for pivoting the claws and on the other hand as a traction organ.
- the claws and their arrangement on or in the tube are special Importance.
- the claws should be in a first position substantially in the axial direction of the Pipe run. At the same time, this means that the claws make the pipe radial should not or at least not significantly protrude in this position. This is therefore important so that the pipe, including the associated claws, can be passed through the opening of the molded part.
- the sliding device arranged in the tube can then be used pivot the claws radially with respect to the axial direction of the Tube.
- the Claws swiveled into a position where they can protruding molded part protrude on the front as in the the following description of the figures is explained in more detail. It must also be ensured that the claws are not only in this radial pivot position, but in this Position can also be fixed so that when subsequently on the pipe train is exercised, not accidentally back into the Swivel back the first position.
- the pulling device can be a tripod-like device, For example, a so-called tripod, which against the metallurgical vessel, especially its metallic one Outer wall, can be placed and supported there.
- the actual tractive force can then be pneumatic, hydraulic or mechanically transferred to the pipe.
- An embodiment for the device for pivoting the Claws provides that the facility is opposed to two has inclined surfaces. With appropriate training of corresponding surface sections of the corresponding Claws can form a "scissor-like" geometry, at of the claws when they are along the said sloping surfaces slide, be pivoted radially and in opposite directions.
- the facility itself can be done in different ways activated (moved), for example pneumatically or manually mechanically.
- a kind of piston in the tube be arranged, which carries the said facility and with a lever is formed which the tube along an axial Reaches through.
- the axial opening can be used for locking have a radial portion at one end, similar to this is known with a bayonet lock. The lever can then moved and locked along said guide opening become.
- the joint for receiving the claws can be made from a in the tube supported shaft exist. Especially with a pipe annular cross section, the shaft can run radially and on opposite sections of the pipe wall.
- the claws can be guided side by side on the shaft become.
- the claws are said to be opposite be pivoted so that there is a mirror image arrangement offering claws.
- the claws can have an L shape, for example.
- a favorable power distribution results when the claws are pivotally mounted along their longer legs. In other words: the shorter leg runs in this Fall at the free end of the claws. At this end are the claws accordingly angled in the opposite direction.
- each claw is designed to be in one position of the claw pivoted relative to the tube is essentially one has lower end face perpendicular to the tube.
- the device as a whole is simple and easy to use. she requires little physical strain on personnel. With the Device can be an associated molded part much faster than before be removed. The molding can also be adjacent without damage Lining parts are pulled out. This will ensure the security of the refractory lining increased overall.
- the device can be used for a wide variety of molded parts and a wide variety of metallurgical Vessels are used, for example in a pan, a tundish or a converter.
- Figure 1 shows schematically a bottom 50 of a metallurgical Vessel with a perforated stone 52 and a mortar in it cylindrical sleeve 54, the state of wear by a reinforced circumferential line is shown schematically.
- the bottom 50 is covered on the outside by a metal jacket 56 limited, which has an opening 58 in the region of the sleeve 54.
- a pulling device 10 is supported against the metal jacket 56 from, which here is tripod-like with three legs, from which the legs 10.1 and 10.2 can be seen in the figure.
- the legs 10.1 and 10.2 open into a common plate 12, through which a rod 14 with an external thread engages below the plate 12 by a cylinder 16 with a corresponding Internal thread is guided and the cylinder 16 down towered over and at its free end with a handle 18 is trained.
- the rod 14 is at its opposite end via a Coupling 20 connected to a pipe 22, which for disassembly the sleeve 54 passed through the center opening 54m becomes.
- the claws 26, 28 L-shaped are the claws 26, 28 L-shaped. Thereafter, the claw 26 includes a longer leg 261 which is mounted on the shaft 24 and a shorter, angled leg 26k. The longer leg 261 is on its underneath shaft 24 extending end with a curved surface section 26f educated.
- the claw 28 is analogous to the claw 26 with legs 281, 28k and curved section 28f, however mirrored and next to the claw 26 on the shaft 24 arranged.
- a device 38 which has a Piston 30 is displaceable in the axial direction of the tube 22.
- the Device 38 includes on its claws 26, 28 facing End two opposite, side by side arranged inclined surfaces 38s1, 38s2.
- the piston 30 is adjustable via a lever 32 in the tube 22, wherein the lever 32 extends through the tube 22, for which the tube 22 with a recess 22a is formed, which from a in Axial direction section and a perpendicular to it extending (extending in the circumferential direction of the tube 22) Section exists.
- FIG. 3 shows the fixed end position of the claws 26, 28th
- the design of the claws 26, 28 in the exemplary embodiment is such that that a lower end face 26ks, 28ks of the short Legs 26k, 28k in the radially pivoted position (FIG 3) runs essentially horizontally. This enables in the subsequent train on the tube 22, a more or less exactly axial force on the sleeve 54 to be removed transfer.
- the rod 14 is with the help the handle 18 rotated so that it differs from the metallurgical (Melt) vessel moved away, i.e. down from cylinder 16 is moved out.
- Melt metallurgical
- the sleeve 54 With appropriate tensile force, the sleeve 54 is on the described manner pulled out of the perforated brick 52. This is usually between the sleeve 54 and perforated brick 52 existing mortar joint broken up.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
Die Erfindung betrifft eine Ausziehvorrichtung für ein feuerfestes Formteil, welches in einer Wand oder in einem Boden eines metallurgischen Gefäßes eingebaut ist, beispielsweise eine Ausgußhülse wie eine Schieber-Innenhülse.The invention relates to a pull-out device for a refractory molded part, which is in a wall or in the bottom of a metallurgical vessel is installed, for example a pouring sleeve such as a slide inner sleeve.
Wie die meisten Auskleidungsteile metallurgischer Gefäße, so verschleißt auch eine Schieber-Innenhülse während des Betriebs. Die im wesentlichen zylindrische Ausflußöffnung für die Metallschmelze wird durch Erosion größer und die Hülse muß von Zeit zu Zeit ausgewechselt werden.Like most lining parts of metallurgical vessels, so does wear a slider inner sleeve during operation. The essentially cylindrical discharge opening for the molten metal is enlarged by erosion and the sleeve must be replaced from time to time.
Bisher erfolgt der Ausbau manuell mit einem Preßlufthammer von der Kaltseite des metallurgischen Gefäßes, beispielsweise einer Pfanne. Wegen der starken Wärmestrahlung und des großen Gewichtes einer solchen Hülse sind die Ausbrucharbeiten besonders schwierig. Außerdem besteht die Gefahr, daß die Innenkontur des Lochsteins, in den die Hülse üblicherweise eingemörtelt ist, bei den Arbeiten beschädigt wird. Dadurch wird bei mehrfacher Erneuerung die Dicke der Mörtelfuge verändert und das Durchbruchrisiko erhöht. So far, the expansion has been carried out manually with a jackhammer from the cold side of the metallurgical vessel, for example a pan. Because of the strong Heat radiation and the great weight of such a sleeve are the Breaking out particularly difficult. There is also a risk that the Inner contour of the perforated brick, in which the sleeve is usually mortared, is damaged during work. This will result in multiple renewals The thickness of the mortar joint changes and the risk of breakthrough increases.
Die europäische Patentschrift 0 271 474 B1 offenbart eine Vorrichtung zum Ausbau von in die Abstichöffnung metallurgischer Gefäße eingesetzten Lochsteinen. Die Vorrichtung weist eine sich in den Lochstein erstreckende Auszieheinrichtung auf, die mittels eines hydraulischen Zylinders längsverstellbar ist. An ihrem, zum inneren des metallurgischen Gefäßes führenden Ende sind an der Vorrichtung zwei Klemmklauen befestigt, die mit dem Lochstein in Eingriff gebracht werden können. European Patent 0 271 474 B1 discloses an apparatus for Removal of metallurgical vessels inserted into the tap hole Perforated bricks. The device has one extending into the perforated brick Pull-out device by means of a hydraulic cylinder is longitudinally adjustable. At her, to the inside of the metallurgical vessel leading end are attached to the device two clamping claws with the perforated brick can be brought into engagement.
Der Erfindung liegt die Aufgabe zugrunde, eine Ausziehvorrichtung der genannten Art anzubieten, mit der die körperliche Belastung für das Personal beim Austausch eines solchen feuerfesten Formteils reduziert wird, die einfach zu bedienen ist und die üblichen Sicherheitsanforderungen genügt.The invention has for its object a pull-out device to offer the kind mentioned, with the physical strain for the staff when replacing such a refractory molding is reduced, the simple is to use and meets the usual safety requirements.
Grundgedanke der Erfindung ist es, das zu ersetzende feuerfeste Formteil aus seiner Montageposition unter Anwendung von Zugkraft auszubrechen. Dabei geht die Erfindung von der Überlegung aus, eine durchgehende Öffnung des Formteils zu nutzen, um ein Werkzeug hindurch zu führen und dieses anschließend radial aufzuspannen, so daß es das zu entfernende Formteil übergreift, das anschließend unter Anwendung von Zug herausgezogen werden kann.The basic idea of the invention is that of the refractory molded part to be replaced break out of its mounting position using traction. there the invention is based on the idea of a continuous opening of the Use molded parts to pass a tool and this then clamp it radially so that it is the molded part to be removed overlaps, which are then pulled out using train can.
Danach betrifft die Erfindung in ihrer allgemeinsten Ausführungsform eine Ausziehvorrichtung für ein feuerfestes Formteil, welches in einer Wand oder in einem Boden eines metallurgischen Gefäßes eingebaut ist, mit den Merkmalen gemäß Anspruch 1. The invention in its most general embodiment relates to one Pull-out device for a fireproof molded part, which in a wall or in a bottom of a metallurgical vessel is installed, with the features according to claim 1.
Das genannte Rohr erfüllt danach zwei Funktionen: Es dient einerseits als Aufnahme der Klauen sowie der zugehörigen Einrichtung zur Verschwenkung der Klauen und andererseits als Zugorgan.The tube mentioned then fulfills two functions: on the one hand, it serves as Inclusion of the claws and the associated device for pivoting the claws and on the other hand as a traction organ.
Die Klauen und ihre Anordnung am bzw. im Rohr sind von besonderer Bedeutung.The claws and their arrangement on or in the tube are special Importance.
Die Klauen sollen in einer ersten Stellung im wesentlichen in Axialrichtung des Rohres verlaufen. Dies bedeutet gleichzeitig, daß die Klauen das Rohr radial nicht oder zumindest nicht wesentlich in dieser Stellung überragen sollten. Dies ist deshalb wichtig, damit das Rohr, einschließlich der zugehörigen Klauen, durch die Öffnung des auszuziehenden Formteils hindurch geführt werden kann.The claws should be in a first position substantially in the axial direction of the Pipe run. At the same time, this means that the claws make the pipe radial should not or at least not significantly protrude in this position. This is therefore important so that the pipe, including the associated claws, can be passed through the opening of the molded part.
Über die im Rohr angeordnete Verschiebeeinrichtung lassen sich anschließend die Klauen verschwenken, und zwar radial in Bezug auf die Axialrichtung des Rohres. Auf diese Weise werden die Klauen in eine Position verschwenkt, bei der sie das auszuziehende Formteil stirnseitig überragen, wie dies in der nachfolgenden Figurenbeschreibung noch näher erläutert wird. Dabei ist auch zu gewährleisten, daß die Klauen nicht nur in diese radiale Schwenkposition geführt werden, sondern in dieser Position auch fixiert werden, damit sie anschließend, wenn auf das Rohr Zug ausgeübt wird, nicht unbeabsichtigt wieder in die erste Stellung zurückschwenken.The sliding device arranged in the tube can then be used pivot the claws radially with respect to the axial direction of the Tube. In this way, the Claws swiveled into a position where they can protruding molded part protrude on the front, as in the the following description of the figures is explained in more detail. It must also be ensured that the claws are not only in this radial pivot position, but in this Position can also be fixed so that when subsequently on the pipe train is exercised, not accidentally back into the Swivel back the first position.
Die Zugeinrichtung kann eine stativartige Einrichtung sein, beispielsweise ein sogenanntes Dreibein, welches gegen das metallurgische Gefäß, insbesondere dessen metallische Außenwand, gesetzt werden kann und sich dort abstützt. Die eigentliche Zugkraft kann dann pneumatisch, hydraulisch oder mechanisch auf das Rohr übertragen werden.The pulling device can be a tripod-like device, For example, a so-called tripod, which against the metallurgical vessel, especially its metallic one Outer wall, can be placed and supported there. The The actual tractive force can then be pneumatic, hydraulic or mechanically transferred to the pipe.
Eine Ausführungsform für die Einrichtung zur Verschwenkung der Klauen sieht vor, daß die Einrichtung zwei entgegengesetzt geneigte Flächen aufweist. Bei entsprechender Ausbildung der korrespondierenden Flächenabschnitte der korrespondierenden Klauen läßt sich eine "scherenartige" Geometrie ausbilden, bei der die Klauen, wenn sie entlang der genannten Schrägflächen gleiten, radial und entgegengesetzt verschwenkt werden.An embodiment for the device for pivoting the Claws provides that the facility is opposed to two has inclined surfaces. With appropriate training of corresponding surface sections of the corresponding Claws can form a "scissor-like" geometry, at of the claws when they are along the said sloping surfaces slide, be pivoted radially and in opposite directions.
Die Einrichtung selbst kann auf unterschiedliche Weise aktiviert (bewegt) werden, beispielsweise pneumatisch oder manuell mechanisch. The facility itself can be done in different ways activated (moved), for example pneumatically or manually mechanically.
Zu diesem Zweck kann beispielsweise eine Art Kolben im Rohr angeordnet werden, der die genannte Einrichtung trägt und mit einem Hebel ausgebildet ist, der das Rohr entlang einer axialen Öffnung durchgreift. Zur Arretierung kann die axiale Öffnung an einem Ende einen radialen Abschnitt aufweisen, ähnlich wie dies bei einem Bajonettverschluß bekannt ist. Der Hebel kann dann entlang der genannten Führungsöffnung bewegt und arretiert werden.For this purpose, for example, a kind of piston in the tube be arranged, which carries the said facility and with a lever is formed which the tube along an axial Reaches through. The axial opening can be used for locking have a radial portion at one end, similar to this is known with a bayonet lock. The lever can then moved and locked along said guide opening become.
Das Gelenk zur Aufnahme der Klauen kann aus einer im Rohr gelagerten Welle bestehen. Insbesondere bei einem Rohr mit ringförmigem Querschnitt kann die Welle radial verlaufen und an gegenüberliegenden Abschnitten der Rohrwand geführt sein.The joint for receiving the claws can be made from a in the tube supported shaft exist. Especially with a pipe annular cross section, the shaft can run radially and on opposite sections of the pipe wall.
Die Klauen können dabei nebeneinander auf der Welle geführt werden.The claws can be guided side by side on the shaft become.
Wie vorstehend erläutert, sollen die Klauen entgegengesetzt verschwenkt werden, so daß sich eine spiegelbildliche Anordnung der Klauen anbietet.As explained above, the claws are said to be opposite be pivoted so that there is a mirror image arrangement offering claws.
Dabei können die Klauen beispielsweise eine L-Form aufweisen. Eine günstige Kraftverteilung ergibt sich, wenn die Klauen entlang ihres längeren Schenkels verschwenkbar gelagert sind. Mit anderen Worten: Der kürzere Schenkel verläuft in diesem Fall am freien Ende der Klauen. An diesem Ende sind die Klauen entsprechend entgegengesetzt abgewinkelt ausgebildet. The claws can have an L shape, for example. A favorable power distribution results when the claws are pivotally mounted along their longer legs. In other words: the shorter leg runs in this Fall at the free end of the claws. At this end are the claws accordingly angled in the opposite direction.
Das abgewinkelte freie Ende jeder Klaue ist so gestaltet, daß es in einer gegenüber dem Rohr verschwenkten Stellung der Klaue eine im wesentlichen senkrecht zum Rohr verlaufende untere Stirnfläche aufweist.The angled free end of each claw is designed to be in one position of the claw pivoted relative to the tube is essentially one has lower end face perpendicular to the tube.
Dies ermöglicht es, eine Keilwirkung zu vermeiden und die Zugkraft anschließend im wesentlichen axial aufzubringen.This makes it possible to avoid wedging and the tensile force then apply substantially axially.
Die Vorrichtung insgesamt ist einfach aufgebaut und einfach zu bedienen. Sie erfordert nur eine geringe physische Belastung für das Personal. Mit der Vorrichtung kann ein zugehöriges Formteil wesentlich schneller als bisher entfernt werden. Das Formteil kann auch ohne Beschädigung benachbarter Auskleidungsteile herausgezogen werden. Dadurch wird die Sicherheit der feuerfesten Auskleidung insgesamt erhöht. Die Vorrichtung kann für unterschiedlichste Formteile und an unterschiedlichsten metallurgischen Gefäßen eingesetzt werden, zum Beispiel bei einer Pfanne, einem Tundish oder einem Konverter.The device as a whole is simple and easy to use. she requires little physical strain on personnel. With the Device can be an associated molded part much faster than before be removed. The molding can also be adjacent without damage Lining parts are pulled out. This will ensure the security of the refractory lining increased overall. The device can be used for a wide variety of molded parts and a wide variety of metallurgical Vessels are used, for example in a pan, a tundish or a converter.
Weitere Merkmale der Erfindung ergeben sich aus den Merkmalen der Unteransprüche sowie der sonstigen Anmeldungsunterlagen.Further features of the invention result from the features of Subclaims and other registration documents.
Die Erfindung wird nachstehend anhand eines Ausführungs-beispiels näher erläutert.The invention is explained in more detail below with the aid of an exemplary embodiment explained.
Dabei zeigen - jeweils in schematisierter Darstellung -
- Figur 1:
- Eine erfindungsgemäße Ausziehvorrichtung im Montagezustand an einer Hülse einer Gießpfanne,
- Figur 2:
- eine vergrößerte Darstellung der Ausziehvorrichtung im Hülsenbereich in einer ersten Stellung,
- Figur 3:
- eine vergrößerte Darstellung der Ausziehvorrichtung im Hülsenbereich in einer zweiten Stellung.
- Figure 1:
- A pull-out device according to the invention in the assembled state on a sleeve of a ladle,
- Figure 2:
- an enlarged view of the pull-out device in the sleeve area in a first position,
- Figure 3:
- an enlarged view of the pull-out device in the sleeve area in a second position.
Figur 1 zeigt schematisch einen Boden 50 eines metallurgischen
Gefäßes mit einem Lochstein 52 und einer darin eingemörtelten
zylinderförmigen Hülse 54, deren Verschleißzustand durch eine
verstärkte Umfangslinie schematisch dargestellt ist.Figure 1 shows schematically a
Der Boden 50 wird außenseitig von einem Metallmantel 56
begrenzt, der im Bereich der Hülse 54 eine Öffnung 58 aufweist.The
Gegen den Metallmantel 56 stützt sich eine Zugeinrichtung 10
ab, die hier stativartig mit drei Beinen ausgebildet ist, von
denen die Beine 10.1 und 10.2 in der Figur erkennbar sind.A
Die Beine 10.1 und 10.2 münden in einer gemeinsamen Platte 12,
durch die eine Stange 14 mit Außengewinde greift, die unterhalb
der Platte 12 durch einen Zylinder 16 mit korrespondierendem
Innengewinde geführt wird und den Zylinder 16 nach unten
überragt und an ihrem freien Ende mit einem Griff 18
ausgebildet ist.The legs 10.1 and 10.2 open into a
Die Stange 14 ist an ihrem gegenüberliegenden Ende über eine
Kupplung 20 mit einem Rohr 22 verbunden, welches zur Demontage
der Hülse 54 durch deren Mittenöffnung 54m hindurch geführt
wird. The
Die nähere Beschreibung des Rohres 22 und seiner zugehörigen
Bauteile wird anhand der Figuren 2, 3 erläutert.The detailed description of the
Während ein erstes Ende 22u über die Kupplung 20 mit der Stange
14 verbunden ist, ist ein gegenüberliegendes zweites Ende 22o
mit seitlichen Schlitzen ausgebildet, so daß zwei
gegenüberliegende laschenartige Abschnitte 221 ausgebildet
werden. Zwischen den laschenartigen Abschnitten 221 verläuft
eine Welle 24, auf der zwei Klauen 26, 28 drehbar geführt sind.During a first end 22u via the
Wie sich aus einer Zusammenschau der Figuren 2, 3 ergibt, sind
die Klauen 26, 28 L-artig gestaltet. Danach umfaßt die Klaue 26
einen längeren Schenkel 261, der auf der Welle 24 gelagert ist
und einen kürzeren, nach außen abgewinkelten Schenkel 26k. Der
längere Schenkel 261 ist an seinem unterhalb der Welle 24
verlaufenden Ende mit einem gekrümmten Flächenabschnitt 26f
ausgebildet. Die Klaue 28 ist analog der Klaue 26 mit Schenkeln
281, 28k und gekrümmtem Abschnitt 28f gestaltet, jedoch
spiegelverkehrt und neben der Klaue 26 auf der Welle 24
angeordnet.As can be seen from an overview of FIGS. 2, 3, are
the
Im Rohr 22 befindet sich eine Einrichtung 38, die über einen
Kolben 30 in Axialrichtung des Rohres 22 verschiebbar ist. Die
Einrichtung 38 umfaßt an ihrem den Klauen 26, 28 zugewandten
Ende zwei entgegengesetzt verlaufende, nebeneinander
angeordnete Schrägflächen 38s1, 38s2.In the
Der Kolben 30 ist über einen Hebel 32 im Rohr 22 verstellbar,
wobei der Hebel 32 das Rohr 22 durchragt, wozu das Rohr 22 mit
einer Ausnehmung 22a ausgebildet ist, die aus einem in
Axialrichtung verlaufenden Abschnitt und einem senkrecht dazu
verlaufenden (in Umfangsrichtung des Rohres 22 verlaufenden)
Abschnitt besteht.The
Um die Einrichtung 38 von der Position in Figur 2 in die
Position nach Figur 3 zu überführen, wird der Hebel 32
angehoben und anschließend in Umfangsrichtung in seine
Arretierstellung verschwenkt.To the
Parallel dazu laufen die gekrümmten Flächenabschnitte 26f
beziehungsweise 28f der Klauen 26, 28 auf die
korrespondierenden Schrägflächen 38s1, 38s2 der Einrichtung 38
auf, wodurch die Klauen 26, 28 radial nach außen verschwenkt
werden. Figur 3 zeigt die fixierte Endposition der Klauen 26,
28.The curved surface sections 26f run parallel to this
and 28f of the
Die Gestaltung der Klauen 26, 28 ist im Ausführungsbeispiel so,
daß eine jeweils untere Stirnfläche 26ks, 28ks der kurzen
Schenkel 26k, 28k in der radial verschwenkten Position (Figur
3) im wesentlichen horizontal verläuft. Dies ermöglicht es,
beim anschließenden Zug auf das Rohr 22, eine mehr oder weniger
exakt axiale Kraft auf die zu entfernende Hülse 54 zu
übertragen.The design of the
Um diese Zugkraft aufzubringen, wird die Stange 14 mit Hilfe
des Griffes 18 so gedreht, daß sie sich vom metallurgischen
(Schmelz)Gefäß weg bewegt, also aus dem Zylinder 16 nach unten
heraus bewegt wird. In order to apply this traction, the
Über die Position der Stange 14 kann die Position des Rohres 22
und damit der Klauen 26, 28 relativ zur Hülse 54 vor
Montagebeginn eingestellt werden. Dies wird in der Regel so
erfolgen (Figur 2), daß die kürzeren Schenkel 26k, 28k der
Klauen 26, 28 eine obere Stirnfläche 54o der zu entsorgenden
Hülse 54 zumindest ein Stück weit überragen, um nach radialer
Verschwenkung eine sichere Auflage der Klauen 26, 28 auf der
oberen Stirnfläche 54o der Hülse 54 zu ermöglichen.About the position of the
Bei entsprechender Zugkraft wird die Hülse 54 auf die
beschriebene Art und Weise aus dem Lochstein 52 herausgezogen.
Dabei wird die zwischen Hülse 54 und Lochstein 52 üblicherweise
vorhandene Mörtelfuge aufgebrochen.With appropriate tensile force, the
Claims (12)
- Extraction apparatus for a refractory structural part (54), which is installed in a wall or in a base (50) of a metallurgical vessel, having the following features:1.1. a tube (22) which1.1.1. at a first end (22u) is connected to a traction device (10), and1.1.2. at a second end (220) has a joint (24), on which1.2. two claws (26), (28) are pivotable in opposite directions, as well as1.3. a device (38) disposed in an axially movable manner in the tube (22) for swivelling the claws (26), (28) from a position extending substantially in axial direction of the tube (22) through an angle > 0° and ≤ 90° and for fixing the claws (26), (28) in said position, wherein1.4. the claws (26), (28) at their, in each case, free end are offset in opposite directions and the offset free end of each claw (26), (28) is fashioned in such a way that, when the claws (26), (28) are in a swivelled position relative to the tube (22), said free end presents a bottom end face (26ks), (28ks) extending substantially at right angles to the tube (22), in order after radial swivelling to enable a reliable support of the claws (26), (28) on the upper end face (54o) of a refractory structural part (54).
- Extraction apparatus according to claim 1, in which the traction device (10) comprises a stand supportable against the metallurgical vessel.
- Extraction apparatus according to claim 1, in which the joint (24) comprises a shaft, which is mounted in the tube (22) and on which the claws (26), (28) are rotatably disposed.
- Extraction apparatus according to claim 1, in which the claws (26), (28) are disposed side by side.
- Extraction apparatus according to claim 1, in which the claws (26), (28) are disposed in a mirror-inverted manner.
- Extraction apparatus according to claim 1, in which the claws (26), (28) are of an L-shaped design.
- Extraction apparatus according to claim 6, in which the claws (26), (28) are mounted pivotally along their longer limb (261), (281).
- Extraction apparatus according to claim 1, in which the device (38) for swivelling the claws (26), (28) comprises two surfaces (38s1), (38s2) inclined in opposite directions.
- Extraction apparatus according to claim 1, in which the device (38) is movable pneumatically or hydraulically in the tube (22).
- Extraction apparatus according to claim 1, in which the device (38) is movable manually mechanically in the tube (22).
- Extraction apparatus according to claim 1, in which the device (38) is arrestable in its respective end positions.
- Extraction apparatus according to claim 10, in which the device (38) is movable by means of a piston (30), which extends in the tube (22) and by means of a lever (32) is displaceable in axial direction of the tube (22) and after swivelling in peripheral direction of the tube (22) is lockable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT01111388T ATE271946T1 (en) | 2000-08-11 | 2001-05-10 | EXTENSION DEVICE FOR PAN SINK |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT5832000U | 2000-08-11 | ||
| AT0058300U AT4596U1 (en) | 2000-08-11 | 2000-08-11 | EXTENSION DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1179377A1 EP1179377A1 (en) | 2002-02-13 |
| EP1179377B1 true EP1179377B1 (en) | 2004-07-28 |
Family
ID=3494413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01111388A Expired - Lifetime EP1179377B1 (en) | 2000-08-11 | 2001-05-10 | Withdrawal device for a ladle ceramic plug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1179377B1 (en) |
| AT (2) | AT4596U1 (en) |
| DE (1) | DE50102973D1 (en) |
| ES (1) | ES2225346T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101895075B1 (en) * | 2008-11-20 | 2018-09-04 | 베수비우스 그룹, 에스. 에이. | Bearing head for handling a ladle pipe |
| DE102011088619A1 (en) * | 2011-12-14 | 2013-06-20 | Sms Siemag Ag | Method for maintenance and / or repair of the spout area of a metallurgical vessel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2314086A2 (en) * | 1975-06-13 | 1977-01-07 | Usinor | Tuyere extractor for blast furnaces - includes pneumatic hammer, and can also extract tymps |
-
2000
- 2000-08-11 AT AT0058300U patent/AT4596U1/en not_active IP Right Cessation
-
2001
- 2001-05-10 AT AT01111388T patent/ATE271946T1/en not_active IP Right Cessation
- 2001-05-10 ES ES01111388T patent/ES2225346T3/en not_active Expired - Lifetime
- 2001-05-10 EP EP01111388A patent/EP1179377B1/en not_active Expired - Lifetime
- 2001-05-10 DE DE50102973T patent/DE50102973D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE50102973D1 (en) | 2004-09-02 |
| AT4596U1 (en) | 2001-09-25 |
| ATE271946T1 (en) | 2004-08-15 |
| ES2225346T3 (en) | 2005-03-16 |
| EP1179377A1 (en) | 2002-02-13 |
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