EP0441767B1 - An arrangement for supplying media to a blowing lance - Google Patents

An arrangement for supplying media to a blowing lance Download PDF

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Publication number
EP0441767B1
EP0441767B1 EP91890013A EP91890013A EP0441767B1 EP 0441767 B1 EP0441767 B1 EP 0441767B1 EP 91890013 A EP91890013 A EP 91890013A EP 91890013 A EP91890013 A EP 91890013A EP 0441767 B1 EP0441767 B1 EP 0441767B1
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EP
European Patent Office
Prior art keywords
lance
lever
arrangement according
displacement means
connection piece
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.)
Revoked
Application number
EP91890013A
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German (de)
French (fr)
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EP0441767A2 (en
EP0441767A3 (en
Inventor
Johann Fohler
Hellmuth Smejkal
Ernst Höllwarth
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Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
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Priority claimed from AT21690A external-priority patent/AT393278B/en
Priority claimed from AT4291A external-priority patent/AT395173B/en
Application filed by Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0441767A2 publication Critical patent/EP0441767A2/en
Publication of EP0441767A3 publication Critical patent/EP0441767A3/en
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Publication of EP0441767B1 publication Critical patent/EP0441767B1/en
Anticipated expiration legal-status Critical
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling

Definitions

  • the invention relates to a device for supplying media to a blow lance for a metallurgical vessel, in particular a steelworks converter, with a blow lance arranged on a lance carrier, wherein a connector of the lance carrier connected to media supply lines can be pressed and pressed onto a counter connector of the blow lance into which counter connector the media channels of the blow lance open the media supply lines can each be sealingly connected to a corresponding media channel of the blowing lance.
  • a device of this type is known from US-A 3,291,471.
  • the connector and the counter-connector are formed in this known device as plates that are placed against each other and pressed against each other.
  • the device which applies the required pressing pressure is not shown in US Pat. No. 3,291,471.
  • it is known internally to provide bolts see e.g. AT-B 350601). These have to be operated manually, which is not only time-consuming, but also cumbersome to carry out since the lance carrier is difficult to access.
  • any manual manipulation, in particular manipulation in hard-to-reach places, harbors sources of error; There may be a leak in the connection between the blowing lance and the lance carrier.
  • blowing lance Since the blowing lance has to be supplied with cooling water and oxygen, a leak that leads to the escape of these two media is dangerous.
  • a particular disadvantage is the transfer of the media from one supply line to the other, since when oxygen passes into the water circuit, undesirable reactions of the oxygen with those present in the cooling water Fats can enter and when water enters the oxygen line, the water finally reaches the converter via the blowing lance and there leads to violent reactions.
  • screw bolts that have to be loosened manually; an exchange is only possible with considerable loss of time.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a device of the type described above in which the blowing lance can be coupled to the lance carrier simply and quickly and no manipulations to be carried out manually at the coupling point are required . Furthermore, a reliable tightness of the connection between the blowing lance and the lance carrier should be ensured, which tightness is reliably maintained even during operation of the blowing lance - in which it is exposed to vibrations and oscillations.
  • a displacement device is provided on the lance carrier with a receptacle for the blowing lance for moving the counter connector from a release position into a coupling position and vice versa, which is movable by means of a drive device, which drive device counter connector against the connector in coupling position presses and the sliding device in the coupling position with positive locking fixed self-locking.
  • a preferred embodiment is characterized in that the drive device has a toggle lever which, in the coupling position, can be moved just beyond its extended position, expediently one of the two levers forming the toggle lever on the Sliding device and the other lever is articulated on an actuating device, and that the lever that is not articulated on the sliding device is spring-supported on the lance carrier.
  • a control device with high operational safety is characterized in that it is designed as a linear drive and is articulated to the lance carrier, the control device advantageously being formed by two rods articulated on the lever of the toggle lever, which are arranged approximately diametrically to one another and approximately perpendicular to the extended toggle lever are and can be actuated by means of one motor each.
  • a particularly safe reception and guidance of the blowing lance can be achieved in that the displacement device has two mutually parallel guide cheeks which can be moved along guide rails arranged on the lance carrier and which can each be actuated by a separate toggle lever, the two toggle levers being driven synchronously are.
  • a locking of the blowing lance in the coupling position can be achieved in a simple manner in that the guide cheeks each have upwardly open recesses for holders provided on the mating connector of the blowing lance and the upper openings of the recesses of the guide cheeks in the coupling position are covered by a projection provided on the lance carrier.
  • two height-adjustable and spaced-apart displacement devices are advantageous on the lance carrier provided, and has the mating connector for each of the receptacles of the displacement devices corresponding brackets.
  • the brackets assigned to the shifting devices located at a height are supported in the associated receptacles via supporting surfaces that absorb vertical and horizontal forces, and the brackets assigned to the further shifting devices are supported only via supporting surfaces that absorb horizontal forces.
  • a particularly simple construction with only a few moving parts in which the drive device has a toggle lever which can be moved in the coupling position just beyond its extended position, one of the two levers forming the toggle lever being articulated on the displacement device and the other lever on the connecting piece characterized in that one of the levers of each of the displacement devices is formed from two parts which are displaceable relative to one another and extend in the direction of the axis of the lever, the two parts being pressed by means of a spring device into a position in which the lever has its greatest length.
  • FIGS. 1 and 2 showing the device in partially sectioned oblique view with the blowing lance uncoupled or with a blowing lance in the coupling position.
  • FIG. 3 shows a section taken along the line III-III of FIG. 2 and FIG. 4 shows a section taken along the line IV-IV of FIG. 3.
  • FIGS. 5 and 6 A further embodiment of the device according to the invention is shown in FIGS. 5 and 6, FIG. 5 showing a longitudinal section through the device and FIG. 6 showing a view of the device from above.
  • a blowing lance 1 can be brought to a lance carrier 2 by means of a load suspension device, such as a crane.
  • the lance carrier 2 can be designed as a carriage and allow the blowing lance 1 to be moved vertically and horizontally in order to bring the blowing lance 1 into a blowing position from a waiting position above a converter.
  • the blowing lance 1 has a lance head 3 at its upper end, which is provided with a plate 5 oriented parallel to the longitudinal axis 4 of the blowing lance 1.
  • the lance head 3 is provided with a bracket 9 which can be hung on the load suspension means (a crane hook 10 in the exemplary embodiment shown).
  • brackets 11 are provided, which are designed as round bolts.
  • the lance carrier 2 is formed by an essentially U-shaped housing 14, a plate-shaped connecting piece 17, to which the plate 5 of the lance head 3 is arranged, being rigidly inserted between the mutually parallel sides 15 of the housing 14 and parallel to the rear wall 16 of the housing 14 , which is the counter-connector, can be applied and pressed, as will be described later.
  • the connector 17 open media supply lines 18,19,20, which are arranged so that their mouths 18 ', 19', 20 'to the mouths of the media channels 6, 7, 8 in the plate of Lance head are aligned when the blowing lance 1 is brought into the coupling position, which is shown in FIG. 2.
  • the openings 18 ', 19', 20 'of the media supply lines 18, 19, 20 surrounding ring grooves 12 are incorporated, in which seals 13 are inserted.
  • seals 13 are also incorporated into the plate.
  • a displacement device 21 is used to move the lance head 3 against the connecting piece 17, which is formed by two guide cheeks arranged on the mutually parallel sides 15 of the housing 14 and supported by guide rails 22.
  • These guide cheeks 21 have U-shaped receptacles 23 designed as upwardly open recesses into which the holders 11 provided on the lance head 3 can be inserted.
  • the guide rails 22 of the guide cheeks 21 extend at right angles to the plate-shaped connecting piece 17, as a result of which the blowing lance 1 can be moved exactly perpendicularly thereto and to the plate 5 of the lance head 3 from a release position (FIG. 1) into a coupling position (FIG. 2) and back.
  • the guide cheeks 21 partially overlap projections 24 are provided, which have the effect that the upwardly open U-shaped recesses 23 of the guide cheeks 21 are only accessible from above in the release position (FIG. 1) of the guide cheeks 21 are, in the coupling position (FIG. 2), however, are covered by these projections 24. This ensures that the Brackets 11 of the lance head 3 are fixed in the recesses 24 of the guide cheeks 21 in the coupling position.
  • a drive device comprising two toggle levers 25, which is designed as follows, serves to move the guide cheeks 21 from the coupling position into the release position or vice versa:
  • each of the levers 26 is articulated with one knee lever 25 at one end. With its other end, each of the levers 26 is articulated on a further lever 27, which in the exemplary embodiment shown is designed as a circular disk.
  • the two circular disks 27 of the two toggle levers 25 are aligned with one another and rotatably supported on a bearing block 29 via a centrally arranged axis 28.
  • This bearing block is fastened to the rear wall 16 of the housing 14 by means of spring elements 30, so that it is pressed against the rear wall 16 of the housing 14 with a support flange 31, but can also be lifted slightly from the latter against the spring force of the spring elements 30.
  • the spring elements 30 have helical or cup springs 32, each of which is pushed onto a bolt 33 which passes through the support flange 31 of the bearing block 29 and is fastened to the rear wall 16 and which is fastened on the one hand to the support flange 31 and on the other hand to one at the free end of the bolt 33 Support bracket 34.
  • the spring elements 30 are under prestress, so that the bearing block 29 is pressed against the rear wall 16 of the housing 14 with a predetermined prestressing force.
  • the two toggle levers 25 are moved synchronously via an actuating device 35 which is articulated on the circular disks 27 and is designed as a linear drive.
  • the adjusting device 35 has on the circular disks 27 Articulated rods 36, which are arranged approximately perpendicular to the extended toggle levers 25 and parallel to the axis 4 of the blowing lance 1 and are aligned diametrically to one another.
  • Articulated rods 36 which are arranged approximately perpendicular to the extended toggle levers 25 and parallel to the axis 4 of the blowing lance 1 and are aligned diametrically to one another.
  • two rods 36 pointing in the same direction are connected to a cross member 37 which is mounted on a linearly displaceable rod 38.
  • the displacement is accomplished in each case by a motor 39, which brings about a longitudinal displacement of this rod 38 via a gear 40, for example via a spindle nut.
  • Each of the drive units 38, 39, 40 is articulated to brackets 41 rigidly mounted on the housing 14 and projecting up and down from the housing 14, so that the rods 36, 38 without adjusting the circular movement of the joint 36 connecting the rods 36 to the circular disk 27 Disability can follow.
  • the dimensions of the levers 26, 27 and the bearing block 29 are dimensioned such that the bearing block 29 rests with its support flange 31 on the rear wall 16 of the housing 14 in the release position of the displacement device 21, but in the coupling position in which the toggle levers 25 are just over their extended position are moved, is a slight distance 42 from the rear wall 16 of the housing 14. This ensures that the connecting and counter-connecting pieces 5 and 17 are pressed against one another, no forces being required from the actuating device 35 actuating the displacement device 21 to maintain the coupling position, ie in other words that the coupling position even if the power supply to the motors fails 39 can be maintained.
  • emergency ventilation is provided, which can be designed, for example, as a manual actuation option for the actuating device 35.
  • FIGS. 5 and 6 are provided on the lance head 3 perpendicular to the longitudinal axis 4 of the blowing lance 1 and parallel to the plate 5 and arranged at a vertical distance A above one another brackets 11 with a rectangular cross section, which are paired with both Extend sides of the lance head 3.
  • two displacement devices 21 which are arranged one above the other in height and at a distance A from one another, are used, which are each formed by two guide cheeks 21 arranged on the mutually parallel sides 15 of the housing 14 and supported by guide rails 22.
  • These guide cheeks 21 have U-shaped receptacles 23 which are open at the top and into which the holders 11 provided on the lance head 3 can be inserted.
  • the receptacles 23 of the guide cheeks 21 arranged in a higher position have support surfaces 43, 44 which absorb vertical and horizontal forces, whereas the receptacles 23 of the guide cheeks 21 arranged in the other height have support surfaces 44 which only absorb horizontal forces.
  • a drive device comprising a toggle lever 25 is used to move the guide cheeks 21 from the coupling position into the release position or vice versa, and is designed as follows:
  • a lever 45 is articulated with one knee lever 25 at one end. With its other end, each of the levers 45 is articulated to a further lever 46, which is supported in an articulated manner on the plate-shaped connecting piece 17.
  • the knee joints each at an altitude arranged toggle levers 25 are connected to one another by an axis 47.
  • the levers 45 are each formed from two mutually aligned parts 45 ', 45' 'which are displaceable relative to one another, so that the levers 45 can have different lengths.
  • the dimensions of the levers 45, 46 are dimensioned such that in the coupling position in which the counter-connector, i.e. the plate 5 abuts the connector 17 and the toggle levers 25 are moved just beyond their extended position, the lever 45 is shortened in length. This ensures that the connecting and counter-connecting pieces 5 and 17 are pressed against one another as a result of the spring devices 39, no forces being required from the actuating device 48 actuating the displacement device 21 to maintain the coupling position, i.e. in other words, the coupling position can be maintained even if the power supply to the actuating device 48 fails.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Description

Die Erfindung betrifft eine Einrichtung zur Medienversorgung einer Blaslanze für ein metallurgisches Gefäß, insbesondere einen Stahlwerkskonverter, mit einer an einem Lanzenträger angeordneten Blaslanze, wobei ein mit Medienversorgungsleitungen verbundenes Anschlußstück des Lanzenträgers an ein Gegenanschlußstück der Blaslanze, in welches Gegenanschlußstück Medienkanäle der Blaslanze münden, anpreßbar und die Medienversorgungsleitungen an jeweils einen korrespondierenden Medienkanal der Blaslanze dichtend anschließbar sind.The invention relates to a device for supplying media to a blow lance for a metallurgical vessel, in particular a steelworks converter, with a blow lance arranged on a lance carrier, wherein a connector of the lance carrier connected to media supply lines can be pressed and pressed onto a counter connector of the blow lance into which counter connector the media channels of the blow lance open the media supply lines can each be sealingly connected to a corresponding media channel of the blowing lance.

Eine Einrichtung dieser Art ist aus der US-A 3 291 471 bekannt. Das Anschlußstück und das Gegenanschlußstück sind bei dieser bekannten Einrichtung als Platten ausgebildet, die aneinander gelegt und gegeneinander gepreßt werden. Die den erforderlichen Preßdruck aufbringende Einrichtung ist in der US-A 3 291 471 nicht dargestellt. Es ist jedoch intern bekannt, hiefür Schraubenbolzen (vgl. z.B. AT-B 350601) vorzusehen. Diese müssen manuell betätigt werden, was nicht nur zeitaufwendig, sondern auch, da der Lanzenträger nur schwer zugängig ist, umständlich durchzuführen ist. Zudem birgt jede manuelle Manipulation, insbesondere eine Manipulation an schwer zugänglichen Stellen, Fehlerquellen; es kann zu einer Undichtheit des Anschlusses zwischen Blaslanze und Lanzenträger kommen.A device of this type is known from US-A 3,291,471. The connector and the counter-connector are formed in this known device as plates that are placed against each other and pressed against each other. The device which applies the required pressing pressure is not shown in US Pat. No. 3,291,471. However, it is known internally to provide bolts (see e.g. AT-B 350601). These have to be operated manually, which is not only time-consuming, but also cumbersome to carry out since the lance carrier is difficult to access. In addition, any manual manipulation, in particular manipulation in hard-to-reach places, harbors sources of error; There may be a leak in the connection between the blowing lance and the lance carrier.

Da die Blaslanze mit Kühlwasser und Sauerstoff zu versorgen ist, ist eine Undichtheit, die zu einem Austritt dieser beiden Medien führt, gefährlich. Nachteilig ist insbesondere der Übertritt der Medien von einer Zuführleitung in die andere, da bei Übertritt von Sauerstoff in den Wasserkreislauf unerwünschte Reaktionen des Sauerstoffs mit im Kühlwasser vorhandenen Fetten eintreten können und bei Eintritt von Wasser in die Sauerstoffleitung das Wasser über die Blaslanze letztlich in den Konverter gelangt und dort zu heftigen Reaktionen führt. Weiters besteht der Wunsch, eine während des Betriebes defekt werdende Blaslanze in kürzester Zeit auszutauschen, um den Frischprozeß ordnungsgemäß beenden zu können. Dies ist mit manuell zu lösenden Schraubenbolzen jedoch nicht möglich, ein Austausch ist nur mit erheblichem Zeitverlust möglich.Since the blowing lance has to be supplied with cooling water and oxygen, a leak that leads to the escape of these two media is dangerous. A particular disadvantage is the transfer of the media from one supply line to the other, since when oxygen passes into the water circuit, undesirable reactions of the oxygen with those present in the cooling water Fats can enter and when water enters the oxygen line, the water finally reaches the converter via the blowing lance and there leads to violent reactions. Furthermore, there is a desire to replace a blowing lance that becomes defective during operation in the shortest possible time in order to be able to properly end the fresh process. However, this is not possible with screw bolts that have to be loosened manually; an exchange is only possible with considerable loss of time.

Aus der US-A - 3,556,501 ist eine Einrichtung zur Medienversorgung einer Blaslanze bekannt, bei der die Blaslanze mittels eines Druckmittelzylinders gegen einen Lanzenträger derart bewegbar ist, daß die freien Enden der Medienversorgungsleitungen der Blaslanze an die korrespondierenden freien Enden von Medienversorgungsleitungen, die am Lanzenträger angeordnet sind, gepreßt werden. Sobald ein Kontakt der Enden der Medienversorgungsleitungen hergestellt ist, können diese durch Klammern, welche an den Enden der Medienversorgungsleitungen angeordneten Flansche umgreifen, aneinander fixiert werden. Zur Betätigung sämtlicher der Fixierung dienenden Klammern sind eigene Druckmittelzylinder vorgesehen.From US-A-3,556,501 a device for media supply to a blowing lance is known, in which the blowing lance can be moved against a lance carrier by means of a pressure medium cylinder such that the free ends of the media supply lines of the blowing lance are connected to the corresponding free ends of media supply lines which are arranged on the lance carrier are pressed. As soon as a contact is made between the ends of the media supply lines, these can be fixed to one another by clamps which encompass flanges arranged at the ends of the media supply lines. Separate pressure medium cylinders are provided for actuating all the clamps used for fixing.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Einrichtung der eingangs beschriebenen Art zu schaffen, bei der ein Kuppeln der Blaslanze an den Lanzenträger einfach und rasch durchführbar ist und keine von Hand aus an der Kupplungsstelle durchzuführenden Manipulationen erforderlich sind. Weiters soll eine zuverlässige Dichtheit der Verbindung zwischen Blaslanze und Lanzenträger sichergestellt sein, welche Dichtheit auch während des Betriebes der Blaslanze - bei dem sie Vibrationen und Schwingungen ausgesetzt ist - zuverlässig aufrecht erhalten bleibt.The invention aims to avoid these disadvantages and difficulties and has as its object to provide a device of the type described above in which the blowing lance can be coupled to the lance carrier simply and quickly and no manipulations to be carried out manually at the coupling point are required . Furthermore, a reliable tightness of the connection between the blowing lance and the lance carrier should be ensured, which tightness is reliably maintained even during operation of the blowing lance - in which it is exposed to vibrations and oscillations.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß an dem Lanzenträger eine Verschiebeeinrichtung mit einer Aufnahme für die Blaslanze zum Bewegen des Gegenanschlußstückes von einer Freigabeposition in eine Kuppelposition und umgekehrt vorgesehen ist, die mittels einer Antriebsvorrichtung bewegbar ist, welche Antriebsvorrichtung das Gegenanschlußstück gegen das Anschlußstück in Kuppelposition anpreßt und die Verschiebeeinrichtung in Kuppelposition unter Formschluß selbsthemmend fixiert.This object is achieved in that a displacement device is provided on the lance carrier with a receptacle for the blowing lance for moving the counter connector from a release position into a coupling position and vice versa, which is movable by means of a drive device, which drive device counter connector against the connector in coupling position presses and the sliding device in the coupling position with positive locking fixed self-locking.

Eine bevorzugte Ausführungsform ist dadurch gekennzeichnet, daß die Antriebsvorrichtung einen Kniehebel aufweist, der in Kuppelposition knapp über seine gestreckte Lage hinaus bewegbar ist, wobei zweckmäßig einer der beiden den Kniehebel bildenden Hebel an der Verschiebeeinrichtung und der andere Hebel an einer Stelleinrichtung angelenkt ist, und daß der nicht an der Verschiebeeinrichtung angelenkte Hebel am Lanzenträger federnd abgestützt ist.A preferred embodiment is characterized in that the drive device has a toggle lever which, in the coupling position, can be moved just beyond its extended position, expediently one of the two levers forming the toggle lever on the Sliding device and the other lever is articulated on an actuating device, and that the lever that is not articulated on the sliding device is spring-supported on the lance carrier.

Eine eine hohe Betriebssicherheit aufweisende Stelleinrichtung ist dadurch gekennzeichnet, daß sie als Linearantrieb ausgebildet ist und am Lanzenträger gelenkig befestigt ist, wobei vorteilhaft die Stelleinrichtung von zwei an dem Hebel des Kniehebels angelenkten Stangen gebildet ist, die etwa diametral zueinander und etwa senkrecht zum gestreckten Kniehebel angeordnet sind und mittels jeweils eines Motors betätigbar sind.A control device with high operational safety is characterized in that it is designed as a linear drive and is articulated to the lance carrier, the control device advantageously being formed by two rods articulated on the lever of the toggle lever, which are arranged approximately diametrically to one another and approximately perpendicular to the extended toggle lever are and can be actuated by means of one motor each.

Eine besonders sichere Aufnahme und Führung der Blaslanze ist dadurch erzielbar, daß die Verschiebeeinrichtung zwei zueinander parallel im Abstand voneinander angeordnete Führungswangen aufweist, die entlang von am Lanzenträger angeordneten Führungsschienen bewegbar sind und die von jeweils einem eigenen Kniehebel betätigbar sind, wobei die beiden Kniehebel synchron antreibbar sind.A particularly safe reception and guidance of the blowing lance can be achieved in that the displacement device has two mutually parallel guide cheeks which can be moved along guide rails arranged on the lance carrier and which can each be actuated by a separate toggle lever, the two toggle levers being driven synchronously are.

Eine Verriegelung der Blaslanze in Kuppelposition ist in einfacher Weise dadurch erzielbar, daß die Führungswangen jeweils nach oben zu offene Ausnehmungen für am Gegenanschlußstück der Blaslanze vorgesehene Halterungen aufweisen und die oberen Öffnungen der Ausnehmungen der Führungswangen in Kuppelposition von einem am Lanzenträger vorgesehenen Vorsprung überdeckt sind.A locking of the blowing lance in the coupling position can be achieved in a simple manner in that the guide cheeks each have upwardly open recesses for holders provided on the mating connector of the blowing lance and the upper openings of the recesses of the guide cheeks in the coupling position are covered by a projection provided on the lance carrier.

Um eine exakte Führung der Blaslanze beim Anpressen des Gegenanschlußstückes an das Anschlußstück zu erreichen und eine absolute Dichtheit auch bei schweren und mit mehreren Medienversorgungsleitungen ausgestatteten Blaslanzen zu erzielen sind vorteilhaft an dem Lanzenträger zwei höhenmäßig übereinander und im Abstand voneinander angeordnete Verschiebeeinrichtungen vorgesehen, und weist das Gegenanschlußstück zu jeder der Aufnahmen der Verschiebeeinrichtungen korrespondierende Halterungen auf.In order to achieve exact guidance of the blowing lance when pressing the mating connector against the connecting piece and to achieve an absolute tightness even with heavy blowing lances equipped with several media supply lines, two height-adjustable and spaced-apart displacement devices are advantageous on the lance carrier provided, and has the mating connector for each of the receptacles of the displacement devices corresponding brackets.

Gemäß einer bevorzugten Ausführungsform sind die den in einer Höhenlage befindlichen Verschiebeeinrichtungen zugeordneten Halterungen in den zugeordneten Aufnahmen über vertikale und horizontale Kräfte aufnehmende Stützflächen und die den weiteren Verschiebeeinrichtungen zugeordneten Halterungen lediglich über horizontale Kräfte aufnehmende Stützflächen abgestützt.According to a preferred embodiment, the brackets assigned to the shifting devices located at a height are supported in the associated receptacles via supporting surfaces that absorb vertical and horizontal forces, and the brackets assigned to the further shifting devices are supported only via supporting surfaces that absorb horizontal forces.

Eine besonders einfache nur wenige bewegliche Teile aufweisende Konstruktion, bei der die Antriebsvorrichtung einen Kniehebel aufweist, der in Kuppelposition knapp über seine gestreckte Lage hinaus bewegbar ist wobei einer der beiden den Kniehebel bildenden Hebel an der Verschiebeeinrichtung und der andere Hebel am Anschlußstück angelenkt ist, ist dadurch gekennzeichnet, daß einer der Hebel jeder der Verschiebeeinrichtungen aus zwei gegeneinander verschiebbaren, sich in Richtung der Achse des Hebels erstreckenden Teilen gebildet ist, wobei die beiden Teile mittels einer Federeinrichtung in eine Position, in der der Hebel seine größte Länge aufweist, gedrückt sind.A particularly simple construction with only a few moving parts, in which the drive device has a toggle lever which can be moved in the coupling position just beyond its extended position, one of the two levers forming the toggle lever being articulated on the displacement device and the other lever on the connecting piece characterized in that one of the levers of each of the displacement devices is formed from two parts which are displaceable relative to one another and extend in the direction of the axis of the lever, the two parts being pressed by means of a spring device into a position in which the lever has its greatest length.

Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert, wobei die Fig. 1 und 2 die Einrichtung im teilweise geschnittenen Schrägriß mit abgekuppelter Blaslanze bzw. mit einer Blaslanze in Kuppelposition zeigen.The invention is explained in more detail below with reference to an embodiment shown in the drawing, with FIGS. 1 and 2 showing the device in partially sectioned oblique view with the blowing lance uncoupled or with a blowing lance in the coupling position.

Fig. 3 stellt einen gemäß der Linie III-III der Fig. 2 geführten Schnitt und Fig. 4 einen gemäß der Linie IV-IV der Fig. 3 geführten Schnitt dar.3 shows a section taken along the line III-III of FIG. 2 and FIG. 4 shows a section taken along the line IV-IV of FIG. 3.

Eine weitere Ausführungsform der erfindungsgemäßen Einrichtung ist in den Fig. 5 und 6 dargestellt, wobei Fig. 5 einen Längsschnitt durch die Einrichtung, und Fig. 6 eine Ansicht auf die Einrichtung von oben zeigt.A further embodiment of the device according to the invention is shown in FIGS. 5 and 6, FIG. 5 showing a longitudinal section through the device and FIG. 6 showing a view of the device from above.

Wie aus Fig. 1 ersichtlich, ist eine Blaslanze 1 mittels eines Lastaufnahmemittels, wie eines Kranes, zu einem Lanzenträger 2 bringbar. Der Lanzenträger 2 kann als Wagen ausgebildet sein und ein vertikales und horizontales Verbringen der Blaslanze 1 gestatten, um die Blaslanze 1 von einer Warteposition oberhalb eines Konverters in Blasposition zu bringen.As can be seen from FIG. 1, a blowing lance 1 can be brought to a lance carrier 2 by means of a load suspension device, such as a crane. The lance carrier 2 can be designed as a carriage and allow the blowing lance 1 to be moved vertically and horizontally in order to bring the blowing lance 1 into a blowing position from a waiting position above a converter.

Die Blaslanze 1 weist an ihrem oberen Ende einen Lanzenkopf 3 auf, der mit einer zur Längsachse 4 der Blaslanze 1 parallel ausgerichteten Platte 5 versehen ist. In diese Platte 5 münden Medienkanäle 6,7,8, wie z.B. ein Sauerstoffkanal 6 und Kühlwasserzu- und -ableitungskanäle 7,8. Der Lanzenkopf 3 ist mit einem Bügel 9 versehen, der an das Lastaufnahmemittel (beim dargestellten Ausführungsbeispiel ein Kranhaken 10) einhängbar ist. Weiters sind an dem Lanzenkopf 3 sich senkrecht zur Längsachse 4 der Blaslanze 1 erstreckende und parallel zur Platte 5 gerichtete Halterungen 11, die als Rundbolzen ausgebildet sind, vorgesehen.The blowing lance 1 has a lance head 3 at its upper end, which is provided with a plate 5 oriented parallel to the longitudinal axis 4 of the blowing lance 1. Media channels 6, 7, 8, e.g. an oxygen channel 6 and cooling water supply and discharge channels 7,8. The lance head 3 is provided with a bracket 9 which can be hung on the load suspension means (a crane hook 10 in the exemplary embodiment shown). Furthermore, on the lance head 3, perpendicular to the longitudinal axis 4 of the blowing lance 1 and parallel to the plate 5, brackets 11 are provided, which are designed as round bolts.

Der Lanzenträger 2 wird von einem im wesentlichen U-förmig gestalteten Gehäuse 14 gebildet, wobei zwischen den zueinander parallelen Seiten 15 des Gehäuses 14 ein plattenförmiges parallel zur Rückwand 16 des Gehäuses 14 angeordnetes Anschlußstück 17 starr eingesetzt ist, an welches die Platte 5 des Lanzenkopfes 3, die das Gegenanschlußstück darstellt, anlegbar und anpreßbar ist, wie dies später noch beschrieben wird. In das Anschlußstück 17 münden Medienversorgungsleitungen 18,19,20, die so angeordnet sind, daß ihre Mündungen 18',19',20' zu den Mündungen der Medienkanäle 6, 7, 8 in der Platte des Lanzenkopfes fluchten, wenn die Blaslanze 1 in Kuppelposition, die in Fig. 2 dargestellt ist, gebracht ist.The lance carrier 2 is formed by an essentially U-shaped housing 14, a plate-shaped connecting piece 17, to which the plate 5 of the lance head 3 is arranged, being rigidly inserted between the mutually parallel sides 15 of the housing 14 and parallel to the rear wall 16 of the housing 14 , which is the counter-connector, can be applied and pressed, as will be described later. In the connector 17 open media supply lines 18,19,20, which are arranged so that their mouths 18 ', 19', 20 'to the mouths of the media channels 6, 7, 8 in the plate of Lance head are aligned when the blowing lance 1 is brought into the coupling position, which is shown in FIG. 2.

In das Anschlußstück 17 des Gehäuses 14 sind die Mündungen 18', 19', 20' der Medienversorgungsleitungen 18, 19, 20 umgebende Ringnuten 12 eingearbeitet, in die Dichtungen 13 eingesetzt sind. Um bei Undichtheit dieser Dichtungen 13 zu gewährleisten, daß es zu keinem Kontakt der Medien untereinander bzw. zu einem Überströmen eines Mediums von einem Kanal in den anderen kommt, sind weiters nicht näher dargestellte Entlastungskanäle in die Platte eingearbeitet.In the connector 17 of the housing 14, the openings 18 ', 19', 20 'of the media supply lines 18, 19, 20 surrounding ring grooves 12 are incorporated, in which seals 13 are inserted. In order to ensure in the event of leaks in these seals 13 that there is no contact of the media with one another or overflow of a medium from one channel into the other, relief channels, not shown, are also incorporated into the plate.

Zum Bewegen des Lanzenkopfes 3 gegen das Anschlußstück 17 dient eine Verschiebeeinrichtung 21, die von zwei an den zueinander parallelen Seiten 15 des Gehäuses 14 angeordneten und über Führungsschienen 22 abgestützten Führungswangen gebildet ist. Diese Führungswangen 21 weisen U-förmige als nach oben zu offene Ausnehmungen ausgebildete Aufnahmen 23 auf, in die die am Lanzenkopf 3 vorgesehenen Halterungen 11 einsetzbar sind. Die Führungsschienen 22 der Führungswangen 21 erstrecken sich rechtwinkelig zu dem plattenförmigen Anschlußstück 17, wodurch die Blaslanze 1 genau senkrecht hierzu und zur Platte 5 des Lanzenkopfes 3 von einer Freigabeposition (Fig. 1) in eine Kuppelposition (Fig. 2) und retour bewegbar ist.A displacement device 21 is used to move the lance head 3 against the connecting piece 17, which is formed by two guide cheeks arranged on the mutually parallel sides 15 of the housing 14 and supported by guide rails 22. These guide cheeks 21 have U-shaped receptacles 23 designed as upwardly open recesses into which the holders 11 provided on the lance head 3 can be inserted. The guide rails 22 of the guide cheeks 21 extend at right angles to the plate-shaped connecting piece 17, as a result of which the blowing lance 1 can be moved exactly perpendicularly thereto and to the plate 5 of the lance head 3 from a release position (FIG. 1) into a coupling position (FIG. 2) and back.

An den zueinander parallelen Seiten 15 des Gehäuses 14 sind die Führungswangen 21 teilweise übergreifende Vorsprünge 24 vorgesehen, die bewirken, daß die nach oben offenen U-förmigen Ausnehmungen 23 der Führungswangen 21 lediglich in der Freigabeposition (Fig. 1) der Führungswangen 21 von oben zugänglich sind, in Kuppelposition (Fig. 2) hingegen von diesen Vorsprüngen 24 überdeckt sind. Hierdurch wird sichergestellt, daß die Halterungen 11 des Lanzenkopfes 3 in den Ausnehmungen 24 der Führungswangen 21 in Kuppelposition fixiert sind.On the mutually parallel sides 15 of the housing 14, the guide cheeks 21 partially overlap projections 24 are provided, which have the effect that the upwardly open U-shaped recesses 23 of the guide cheeks 21 are only accessible from above in the release position (FIG. 1) of the guide cheeks 21 are, in the coupling position (FIG. 2), however, are covered by these projections 24. This ensures that the Brackets 11 of the lance head 3 are fixed in the recesses 24 of the guide cheeks 21 in the coupling position.

Zum Bewegen der Führungswangen 21 von der Kuppelposition in die Freigabeposition bzw. umgekehrt, dient eine zwei Kniehebel 25 umfassende Antriebsvorrichtung, die wie folgt ausgebildet ist:A drive device comprising two toggle levers 25, which is designed as follows, serves to move the guide cheeks 21 from the coupling position into the release position or vice versa:

An jeder der beiden Führungswangen 21 ist je ein Hebel 26 je eines Kniehebels 25 mit einem Ende angelenkt. Mit seinem anderen Ende ist jeder der Hebel 26 an jeweils einem weiteren Hebel 27, der beim dargestellten Ausführungsbeispiel als Kreisscheibe ausgebildet ist, angelenkt.On each of the two guide cheeks 21, one lever 26 is articulated with one knee lever 25 at one end. With its other end, each of the levers 26 is articulated on a further lever 27, which in the exemplary embodiment shown is designed as a circular disk.

Die beiden Kreisscheiben 27 der beiden Kniehebel 25 sind zueinander fluchtend ausgerichtet und über eine zentral angeordnete Achse 28 an einem Lagerbock 29 drehbar gelagert. Dieser Lagerbock ist an der Rückwand 16 des Gehäuses 14 über Federelemente 30 befestigt, sodaß er mit einem Stützflansch 31 an die Rückwand 16 des Gehäuses 14 angepreßt ist, von dieser jedoch auch geringfügig entgegen der Federkraft der Federelemente 30 abgehoben werden kann. Die Federelemente 30 weisen Schrauben- oder Tellerfedern 32 auf, die jeweils an einem den Stützflansch 31 des Lagerbocks 29 durchsetzenden und an der Rückwand 16 befestigten Bolzen 33 aufgeschoben sind und sich einerseits an dem Stützflansch 31 und andererseits an einer am freien Ende des Bolzens 33 befestigten Halterung 34 abstützen. Die Federelemente 30 stehen unter Vorspannung, sodaß der Lagerbock 29 mit einer vorbestimmten Vorspannkraft gegen die Rückwand 16 des Gehäuses 14 gepreßt ist.The two circular disks 27 of the two toggle levers 25 are aligned with one another and rotatably supported on a bearing block 29 via a centrally arranged axis 28. This bearing block is fastened to the rear wall 16 of the housing 14 by means of spring elements 30, so that it is pressed against the rear wall 16 of the housing 14 with a support flange 31, but can also be lifted slightly from the latter against the spring force of the spring elements 30. The spring elements 30 have helical or cup springs 32, each of which is pushed onto a bolt 33 which passes through the support flange 31 of the bearing block 29 and is fastened to the rear wall 16 and which is fastened on the one hand to the support flange 31 and on the other hand to one at the free end of the bolt 33 Support bracket 34. The spring elements 30 are under prestress, so that the bearing block 29 is pressed against the rear wall 16 of the housing 14 with a predetermined prestressing force.

Die Bewegung der beiden Kniehebel 25 erfolgt synchron über eine an den Kreisscheiben 27 angelenkte Stelleinrichtung 35, die als Linearantrieb ausgebildet ist. Die Stelleinrichtung 35 weist an den Kreisscheiben 27 angelenkte Stangen 36 auf, die etwa senkrecht zu den gestreckten Kniehebeln 25 und parallel zur Achse 4 der Blaslanze 1 angeordnet und diametral zueinander ausgerichtet sind. Jeweils zwei in die selbe Richtung weisende Stangen 36 sind mit einem Querträger 37 verbunden, der an einer linear verschiebbaren Stange 38 montiert ist. Die Verschiebung wird jeweils von einem Motor 39 bewerkstelligt, der über ein Getriebe 40 eine Längsverschiebung dieser Stange 38 beispielsweise über eine Spindelmutter bewirkt. Jede der Antriebseinheiten 38,39,40 ist an am Gehäuse 14 starr montierten und vom Gehäuse 14 nach oben und unten ragenden Halterungen 41 gelenkig befestigt, sodaß die Stangen 36,38 beim Verstellen der Kreisbewegung des die Stangen 36 mit der Kreisscheibe 27 verbindenden Gelenkes ohne Behinderung folgen können.The two toggle levers 25 are moved synchronously via an actuating device 35 which is articulated on the circular disks 27 and is designed as a linear drive. The adjusting device 35 has on the circular disks 27 Articulated rods 36, which are arranged approximately perpendicular to the extended toggle levers 25 and parallel to the axis 4 of the blowing lance 1 and are aligned diametrically to one another. In each case two rods 36 pointing in the same direction are connected to a cross member 37 which is mounted on a linearly displaceable rod 38. The displacement is accomplished in each case by a motor 39, which brings about a longitudinal displacement of this rod 38 via a gear 40, for example via a spindle nut. Each of the drive units 38, 39, 40 is articulated to brackets 41 rigidly mounted on the housing 14 and projecting up and down from the housing 14, so that the rods 36, 38 without adjusting the circular movement of the joint 36 connecting the rods 36 to the circular disk 27 Disability can follow.

Die Dimensionen der Hebel 26, 27 und des Lagerbocks 29 sind so bemessen, daß der Lagerbock 29 in der Freigabeposition der Verschiebeeinrichtung 21 mit seinem Stützflansch 31 an der Rückwand 16 des Gehäuses 14 aufliegt, in der Kuppelposition jedoch, in der die Kniehebel 25 knapp über ihre gestreckte Lage hinaus bewegt sind, in geringfügigem Abstand 42 von der Rückwand 16 des Gehäuses 14 liegt. Hiedurch ist sichergestellt, daß das Anschluß- und Gegenanschlußstück 5 und 17 gegeneinander gepreßt sind, wobei zur Aufrechterhaltung der Kuppelposition keinerlei Kräfte von der die Verschiebeeinrichtung 21 betätigenden Stelleinrichtung 35 erforderlich sind, d.h. mit anderen Worten, daß die Kuppelposition auch bei Ausfall der Energieversorgung der Motoren 39 aufrecht erhalten werden kann. Um in diesem Fall jedoch ein Entfernen der Blaslanze 1 zu ermöglichen, ist eine Notlüftung vorgesehen, die z.B. als manuelle Betätigungsmöglichkeit der Stelleinrichtung 35 ausgebildet sein kann.The dimensions of the levers 26, 27 and the bearing block 29 are dimensioned such that the bearing block 29 rests with its support flange 31 on the rear wall 16 of the housing 14 in the release position of the displacement device 21, but in the coupling position in which the toggle levers 25 are just over their extended position are moved, is a slight distance 42 from the rear wall 16 of the housing 14. This ensures that the connecting and counter-connecting pieces 5 and 17 are pressed against one another, no forces being required from the actuating device 35 actuating the displacement device 21 to maintain the coupling position, ie in other words that the coupling position even if the power supply to the motors fails 39 can be maintained. However, in order to enable removal of the blowing lance 1 in this case, emergency ventilation is provided, which can be designed, for example, as a manual actuation option for the actuating device 35.

Gemäß der in den Fig. 5 und 6 dargestellten Ausführungsform sind an dem Lanzenkopf 3 sich senkrecht zur Längsachse 4 der Blaslanze 1 erstreckende und parallel zur Platte 5 gerichtete sowie im vertikalen Abstand A übereinander angeordnete Halterungen 11 mit rechteckigem Querschnitt vorgesehen, die sich paarweise zu beiden Seiten des Lanzenkopfes 3 erstrecken.According to the embodiment shown in FIGS. 5 and 6 are provided on the lance head 3 perpendicular to the longitudinal axis 4 of the blowing lance 1 and parallel to the plate 5 and arranged at a vertical distance A above one another brackets 11 with a rectangular cross section, which are paired with both Extend sides of the lance head 3.

Zum Bewegen des Lanzenkopfes 3 gegen das Anschlußstück 17 dienen zwei im Gehäuse 14 höhenmäßig übereinander und im Abstand A voneinander angeordnete Verschiebeeinrichtungen 21, die jeweils von zwei an den zueinander parallelen Seiten 15 des Gehäuses 14 angeordneten und über Führungsschienen 22 abgestützten Führungswangen 21 gebildet sind. Diese Führungswangen 21 weisen U-förmige nach oben zu offene Aufnahmen 23 auf, in die die am Lanzenkopf 3 vorgesehenen Halterungen 11 einsetzbar sind.For moving the lance head 3 against the connecting piece 17, two displacement devices 21, which are arranged one above the other in height and at a distance A from one another, are used, which are each formed by two guide cheeks 21 arranged on the mutually parallel sides 15 of the housing 14 and supported by guide rails 22. These guide cheeks 21 have U-shaped receptacles 23 which are open at the top and into which the holders 11 provided on the lance head 3 can be inserted.

Die Aufnahmen 23 der in einer Höhenlage angeordneten Führungswangen 21 weisen sowohl vertikale und horizontale Kräfte aufnehmende Stützflächen 43, 44 auf, wogegen die Aufnahmen 23 der in der anderen Höhenlage angeordneten Führungswangen 21 lediglich horizontale Kräfte aufnehmende Stützflächen 44 aufweisen.The receptacles 23 of the guide cheeks 21 arranged in a higher position have support surfaces 43, 44 which absorb vertical and horizontal forces, whereas the receptacles 23 of the guide cheeks 21 arranged in the other height have support surfaces 44 which only absorb horizontal forces.

Zum Bewegen der Führungswangen 21 von der Kuppelposition in die Freigabeposition bzw. umgekehrt, dient eine Kniehebel 25 umfassende Antriebsvorrichtung, die wie folgt ausgebildet ist:A drive device comprising a toggle lever 25 is used to move the guide cheeks 21 from the coupling position into the release position or vice versa, and is designed as follows:

An jeder der Führungswangen 21 ist jeweils ein Hebel 45 je eines Kniehebels 25 mit einem Ende angelenkt. Mit seinem anderen Ende ist jeder der Hebel 45 an jeweils einem weiteren Hebel 46 angelenkt, der jeweils an dem plattenförmigen Anschlußstück 17 gelenkig abgestützt ist. Die Kniegelenke der in jeweils einer Höhenlage angeordneten Kniehebel 25 sind durch eine Achse 47 miteinander verbunden.On each of the guide cheeks 21, a lever 45 is articulated with one knee lever 25 at one end. With its other end, each of the levers 45 is articulated to a further lever 46, which is supported in an articulated manner on the plate-shaped connecting piece 17. The knee joints each at an altitude arranged toggle levers 25 are connected to one another by an axis 47.

Die Bewegung der beiden Kniehebel 25 der in einer Höhenlage angeordneten Führungswangen 21 erfolgt synchron über eine an der gemeinsamen Achse 47 der Kniehebel 25 angelenkte Stelleinrichtung 48, die als Linearantrieb ausgebildet ist.The movement of the two toggle levers 25 of the guide cheeks 21 arranged in a high position takes place synchronously via an actuating device 48 articulated on the common axis 47 of the toggle levers 25, which is designed as a linear drive.

Die Hebel 45 sind jeweils aus zwei zueinander fluchtenden Teilen 45', 45'' gebildet, die gegeneinander verschiebbar sind, so daß die Hebel 45 unterschiedliche Längen einnehmen können. Eine zwischen den Teilen 45' und 45'' vorgesehene Federeinrichtung 49, wie z. B. ein Tellerfederpaket drückt die beiden Teile 45' und 45'' in eine Position, in der die Länge des Hebels 45 am größten ist.The levers 45 are each formed from two mutually aligned parts 45 ', 45' 'which are displaceable relative to one another, so that the levers 45 can have different lengths. A provided between the parts 45 'and 45' 'spring device 49, such as. B. a plate spring assembly presses the two parts 45 'and 45' 'into a position in which the length of the lever 45 is greatest.

Die Dimensionen der Hebel 45, 46 sind so bemessen, daß in der Kuppelposition, in der das Gegenanschlußstück, d.h. die Platte 5, am Anschlußstück 17 anliegt und die Kniehebel 25 knapp über ihre gestreckte Lage hinaus bewegt sind, der Hebel 45 in seiner Länge verkürzt ist. Hiedurch ist sichergestellt, daß das Anschluß- und Gegenanschlußstück 5 und 17 infolge der Federeinrichtungen 39 gegeneinander gepreßt sind, wobei zur Aufrechterhaltung der Kuppelposition keinerlei Kräfte von der die Verschiebeeinrichtung 21 betätigenden Stelleinrichtung 48 erforderlich sind, d.h. mit anderen Worten, daß die Kuppelposition auch bei Ausfall der Energieversorgung der Stelleinrichtung 48 aufrecht erhalten werden kann.The dimensions of the levers 45, 46 are dimensioned such that in the coupling position in which the counter-connector, i.e. the plate 5 abuts the connector 17 and the toggle levers 25 are moved just beyond their extended position, the lever 45 is shortened in length. This ensures that the connecting and counter-connecting pieces 5 and 17 are pressed against one another as a result of the spring devices 39, no forces being required from the actuating device 48 actuating the displacement device 21 to maintain the coupling position, i.e. in other words, the coupling position can be maintained even if the power supply to the actuating device 48 fails.

Claims (10)

  1. An arrangement for supplying media to a blowing lance (1) for a metallurgical vessel, in particular a steelworks converter, including a blowing lance (1) arranged on a lance carrier (2), wherein a connection piece (17) of the lance carrier (2) connected with media supply ducts (18, 19, 20) is pressable at a counter connection piece (5) of the blowing lance (1), into which counter connection piece (5) media channels (6, 7, 8) of the blowing lance enter, and wherein the media supply ducts (18, 19, 20) are sealingly connectable to one corresponding medium channel (6, 7, 8) each of the blowing lance (1), characterized in that a displacement means (21) including a seat (23) for the blowing lance (1) is provided on the lance carrier (2) for moving the counter connection piece (5) from a released position (Fig. 1) into a coupled position (Fig. 2) and back, which displacement means is movable by a driving means (25), which driving means (25) presses the counter connection piece (5) against the connection piece (17) in the coupled position (Fig. 2), selflockingly and positively fixing the displacement means (21) in the coupled position.
  2. An arrangement according to claim 1, characterized in that the driving means (25) comprises a toggle lever (25, 26, 27), which is movable slightly beyond its extended position in the coupled position (Fig. 2).
  3. An arrangement according to claim 2, characterized in that one of the two levers (26) constituting the toggle lever (25) is hinged to the displacement means (21) and the other lever (27) is hinged to an actuation means (35), and in that the lever (27) that is not hinged to the displacement means (21) is resiliently supported on the lance carrier (2).
  4. An arrangement according to claim 3, characterized in that the actuation means (35) is designed as a linear drive (38, 39, 40) and is articulately fastened to the lance carrier (2).
  5. An arrangement according to claim 4, characterized in that the actuation means (35) is formed by two rods (36) hinged to a lever (27) of the toggle lever (25) and arranged approximately diametrical relative to each other and approximately perpendicular to the extended toggle lever (25), each of the rods being operable by a motor (39).
  6. An arrangement according to one or several of claims 1 to 5, characterized in that the displacement means (21) comprises two parallel guiding cheeks arranged at a distance from each other and movable along guide rails (22) arranged on the lance carrier (2), each being operable by its own toggle lever (25), the two toggle levers (25) being drivable synchronously.
  7. An arrangement according to claim 6, characterized in that each of the guiding cheeks (21) is provided with an upwardly open seat (23) for retaining means (11) provided on the counter connection piece (5) of the blowing lance (1), the upper openings of the seats (23) of the guiding cheeks (21), in the coupled position (Fig. 2), being covered by a projection (24) provided on the lance carrier (2).
  8. An arrangement according to one or several of claims 1 to 7, characterized in that two displacement means (21) are provided on the lance carrier (2), arranged one above the other and at a distance (A) from each other, and that the counter connection piece (5) comprises retaining means (11) corresponding to each of the seats (23) of the displacement means (21) (Figs. 5, 6).
  9. An arrangement according to claim 8, characterized in that the retaining means (11) allocated to the displacement means (21) located on one height level, in the pertaining seats (23), are supported via supporting surfaces (43, 44) absorbing vertical and horizontal forces and the retaining means (11) allocated to the other displacement means (21) merely are supported via supporting surfaces (44) absorbing horizontal forces (Figs. 5, 6).
  10. An arrangement according to one or several of claims 2 to 9, characterized in that one of the levers (45) constituting the toggle lever (25) is hinged to the displacement means (21) and the other lever (46) is hinged to the connection piece (17), and in that one of the levers of each of the displacement means (21) is composed of two relatively movable parts (45', 45'') extending in the axial direction of the lever (45), said two parts (45', 45'') being urged by a spring means (49) into a position in which the lever (45) has its greatest length (Figs. 5, 6).
EP91890013A 1990-02-01 1991-01-28 An arrangement for supplying media to a blowing lance Revoked EP0441767B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT216/90 1990-02-01
AT21690A AT393278B (en) 1990-02-01 1990-02-01 DEVICE FOR MEDIA SUPPLY OF A BLOWING LANCE
AT4291A AT395173B (en) 1991-01-10 1991-01-10 DEVICE FOR MEDIA SUPPLY OF A BLOWING LANCE
AT42/91 1991-01-10

Publications (3)

Publication Number Publication Date
EP0441767A2 EP0441767A2 (en) 1991-08-14
EP0441767A3 EP0441767A3 (en) 1992-03-25
EP0441767B1 true EP0441767B1 (en) 1995-01-11

Family

ID=25591213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890013A Revoked EP0441767B1 (en) 1990-02-01 1991-01-28 An arrangement for supplying media to a blowing lance

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Country Link
US (1) US5090622A (en)
EP (1) EP0441767B1 (en)
JP (1) JPH0657851B2 (en)
CN (1) CN1022694C (en)
DE (1) DE59104180D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU88057A1 (en) * 1992-01-24 1993-08-17 Paul Wurth S.A. BLOWING HANGING WITH COMBINED MEDIA SUPPLY
LU88056A1 (en) * 1992-01-24 1993-08-17 Paul Wurth S.A. DEVICE FOR MEDIA SUPPLYING A BLOWING LANCE
DE4240666C2 (en) * 1992-11-24 1996-06-13 Mannesmann Ag Device for holding and supplying a blowing lance for a metallurgical vessel
DE19541199C2 (en) * 1995-11-04 2001-05-23 Thyssen Stahl Ag Changing device for a blowing lance
DE102012016045B3 (en) * 2012-08-08 2013-10-24 Saarstahl Ag Method for operating a Aufblaslanzenanordnung, and Aufblaslanzenanordnung itself
DE102016223722B4 (en) 2016-11-29 2024-04-25 Sms Group Gmbh Device and method for assembling and disassembling a lance head

Citations (1)

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Publication number Priority date Publication date Assignee Title
US3556501A (en) * 1968-03-29 1971-01-19 Demag Ag Blow lance assembly for metallurgical furnaces

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Publication number Priority date Publication date Assignee Title
GB888077A (en) * 1959-09-15 1962-01-24 British Oxygen Co Ltd Clamping device for tubular lances
AT238746B (en) * 1962-12-14 1965-02-25 Voest Ag Blowing lance for performing inflation processes
LU69797A1 (en) * 1974-04-05 1974-11-21
DE2502977C2 (en) * 1975-01-23 1977-03-31 Mannesmann Ag BLOW LANCE COUPLING AND BLOW LANCE
US4494737A (en) * 1981-10-08 1985-01-22 Pullman Berry Company Lance for repairing the lining of steelmaking vessels

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556501A (en) * 1968-03-29 1971-01-19 Demag Ag Blow lance assembly for metallurgical furnaces

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Publication number Publication date
US5090622A (en) 1992-02-25
CN1022694C (en) 1993-11-10
EP0441767A2 (en) 1991-08-14
JPH0657851B2 (en) 1994-08-03
DE59104180D1 (en) 1995-03-02
CN1053815A (en) 1991-08-14
EP0441767A3 (en) 1992-03-25
JPH04214814A (en) 1992-08-05

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