EP1426126B1 - Steuerungssystem von einem Verschlussteil in einem Stranggiessanlage, und entsprechende Stranggiessanlage - Google Patents

Steuerungssystem von einem Verschlussteil in einem Stranggiessanlage, und entsprechende Stranggiessanlage Download PDF

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Publication number
EP1426126B1
EP1426126B1 EP03356191A EP03356191A EP1426126B1 EP 1426126 B1 EP1426126 B1 EP 1426126B1 EP 03356191 A EP03356191 A EP 03356191A EP 03356191 A EP03356191 A EP 03356191A EP 1426126 B1 EP1426126 B1 EP 1426126B1
Authority
EP
European Patent Office
Prior art keywords
control assembly
motor
assembly according
stopper
continuous casting
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
Application number
EP03356191A
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English (en)
French (fr)
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EP1426126A1 (de
Inventor
Michel Dussud
Patrick Simonnin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
D'etudes Et De Realisations Techniques Sert Ste
Original Assignee
D'etudes Et De Realisations Techniques Sert Ste
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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
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/20—Stopper-rod operating equipment

Definitions

  • the present invention relates to a control assembly of a shutter belonging to a continuous casting installation, and to a continuous casting installation provided with such a control assembly.
  • a continuous casting operation consists, in a first step, of pouring molten metal into a tank, also called tundish, from a pocket.
  • a tank also called tundish
  • This tank is further provided with a shutter, also called stopper.
  • the molten metal When the molten metal has reached a given level in the tank, it is then poured into a mold, under the effect of a release movement of the shutter. This then initiates a phase of filling the mold, until reaching a given level of setpoint.
  • the stopper is operated by means of a control assembly, also called actuator, in a race ensuring a satisfactory filling phase of the mold.
  • the shutter control assembly comprises a drive shaft, free to slide in a translation movement relative to a guide assembly.
  • This drive shaft is integral with a return arm, directly supporting the shutter.
  • a rotary servo motor is provided, as well as a device for transforming the rotary movement, imparted by this motor, into a translation movement of the shaft.
  • this motion transformation device is designed as a screw jack. It should also be noted that the motor is offset laterally with respect to the drive shaft, with reference to the main direction of the latter.
  • control assembly of the shutter has a relatively large size. Moreover, it is necessary to provide as many motors as guide members, which is disadvantageous in economic terms.
  • the invention proposes to remedy the various disadvantages of the prior art mentioned above.
  • the invention also relates to a continuous casting installation, as defined in claim 14.
  • the continuous casting installation illustrated on the figure 1 , comprises a tank 2, which is filled with molten metal 4, for example of steel. The latter was poured into the tank, from a pocket not shown.
  • This tank is closed, in known manner, by a shutter 6, or stopper, which defines a lower orifice for the passage of metal, also called nozzle 8.
  • This stopper can be operated along its main axis, namely vertically on the figure 1 , through a control assembly 10, or actuator, which will be described in more detail in what follows.
  • This control assembly 10 comprises in particular a drive shaft 12, which can be moved in translation along the arrow F, in this case vertically. This movement of the shaft 12 then induces a movement of the stopper 6, indicated by the vertical arrow F ', via an intermediate arm 14.
  • the walls of the nozzle 8 are also provided with a tube 16, made of a refractory material, which opens into an ingot mold 18.
  • the latter receives an unrepresented dummy, intended to be progressively removed, to ensure a known manner the extraction of a solidified metal bar, also not shown.
  • the control assembly also comprises a fixed guide assembly, of conventional type, which is designated as a whole by the reference 20.
  • This assembly 20 has a cylindrical barrel 22, on which are reported flanges 24, allowing attachment to a plate 26, integral with the tank 2.
  • This barrel 22 contains, in a manner known per se, two ball bushings 28, and a device 30, which conventionally prevents rotation of the shaft 12 about its vertical axis A.
  • the shaft 22 is screwed, at its lower end, to a base 32, which is itself extended, opposite the shaft, by an annular skirt 34.
  • the latter thus defines, with the walls facing the base 32, a housing 36, placed in communication with a central opening 38, hollowed axially in the base 32.
  • the walls of the skirt 34 carry pins 40 extending radially inwards.
  • the function of these pins 40 which are here three in number, will be explained in the following.
  • the control assembly 10 further comprises a motor 42, of conventional type, provided with a rotary shaft 44, extending vertically. This engine is partially received in a box 46, equipped with handles 48, as well as a current supply 50.
  • This box 46 is closed, at its upper part facing the shank 22, with a cover 52, in which is hollowed a central passage opening of the axis 44.
  • the latter is secured, via a key 54, of a first coupling member 56, received in a flexible housing 58, both of which will be described in greater detail in the following.
  • This housing 58 is disposed in the internal volume of a connecting piece 60, of cylindrical shape, which is fixed on the motor 42 by any appropriate means. As shown more particularly in figure 5 , the wall of this connecting piece 60 is hollowed out with different notches 62, which are provided in a number corresponding to that of the pins 40.
  • each notch 62 which generally has an L shape, opens axially at the the end of the connecting piece 60 opposite the hood.
  • This notch is extended by a radial notch 64, which defines an end cavity 66, bordered by an intermediate neck 68.
  • the control assembly 10 also comprises means making it possible to transform the rotary movement of the motor 42 into a translation movement of the shaft 12.
  • these means comprise a screw jack 70, known as such, which is housed mainly in the shaft 22 of the guide assembly 20.
  • the axis 72 of the jack 70 which passes through the base 32, is secured, via a key 74, a second coupling member 76.
  • This axis 72 which can be driven by the axis 44 of the motor 42, is adapted to cooperate, so that conventional, with a nut 78 secured to the drive shaft 12.
  • the two coupling members 56 and 76 have splines, delimiting two-by-two recesses. In use, in a conventional manner, the grooves of one of these two members penetrate into the recesses of the other, so that there is a possibility of temporary coupling, with disengagement, between these two members 56 and 76.
  • the member 56 is housed permanently in the flexible housing 58, while the member 76 is able to enter this housing temporarily.
  • an elastic element 80 in this case a spring washer, intended to bring down the coupling member 76 downwards.
  • the operator When the motor 42 is disengaged from the drive shaft 10, the operator has a part of the aforementioned motor, which is housed in its housing 46 provided with Handles 48, the coupling member 56 being accessible.
  • the coupling member 76 present at the lower end of the axis of the cylinder 70, is also accessible.
  • each pin 40 is received in a corresponding cavity 66, after having crossed an intermediate neck 68.
  • the spring washer 80 provides an axial return effect of each pin 40 at the bottom of the cavity 66, according to the arrow f 3 of this same figure 5 . This thus prevents any untimely exit of this pin 40 from its cavity 66.
  • the motor 42 can be fixed, removably, on the axis 72 of the screw jack 70.
  • this motor has two positions, namely a setting position, in which the two couplings 56 and 76 cooperate mutually, and a rest position, wherein the aforementioned couplings are spaced apart from each other.
  • the fastening means of this motor 42 on the cylinder 70 are of bayonet type. They actually involve a translational movement, combined with a rotational movement of the engine relative to this cylinder.
  • the axis 44 of the motor 42 drives the shaft 12, via the means of transformation of the movement, which comprise the two coupling members 56 and 76, and the screw jack 70.
  • the rotary axis 44 of the motor 42 extends substantially along the main axis A of the drive shaft 12.
  • the housing 46 in which the motor 42 is received, is located below the drum 22, substantially in line with the latter. This is advantageous in terms of compactness of the control assembly 10 of the stopper 6.
  • this control assembly 10 is provided with a lever, not shown, conventionally intended for the manual movement of the drive shaft 12. This is to be compared with the teaching of EP-A-0 734 801 , in which the device for manually operating the stopper is constituted by a flywheel coupled to a ball screw.
  • Such a system does not allow use in casting, because the speed of movement of the stopper is very limited. It is thus impossible to perform a manual start of a casting, with such a device, since the initial opening of the stopper, of the order of 15 to 20 mm, when starting, must be performed in less than one second.
  • the invention makes it possible to achieve the objectives mentioned above.
  • control assembly according to the invention is of remarkable compactness, in use. This is to be compared with the prior art, in which the motor is offset laterally with respect to the guide assembly.
  • the means for removably fixing the motor on the screw jack allow rapid disassembly of the latter.
  • the emergency closure of the stopper is performed by gravity, simply by switching off the engine.
  • the weight of the mobile system, including the shaft, the arm and the stopper, is thus sufficient to lower the stopper, so as to allow such an emergency closure.
  • EP-A-0 734 801 in which an electrical resource is used by accumulation, which implements the entire motor chain, namely the electronic control device, the cables, the motor and the ball screw.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Continuous Casting (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Paper (AREA)
  • Transmission Devices (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Basic Packing Technique (AREA)

Claims (14)

  1. Steuereinheit (10) zur Steuerung einer Verschlussvorrichtung (6) für eine Stranggießanlage, welche umfasst: eine Führungsanordnung (20), eine Antriebswelle (12) zum Antrieb der Verschlussvorrichtung (6), die geeignet ist, eine Translationsbewegung bezüglich der Führungsanordnung auszuführen, einen Motor (42), der eine Drehachse (44) besitzt, sowie Mittel (56, 70, 76), die geeignet sind, die Rotationsbewegung des Motors in eine Translationsbewegung der Antriebswelle (12) umzuwandeln, wobei Mittel (40, 62) zur lösbaren Befestigung des Motors (42) an den Mitteln zur Umwandlung der Bewegung (56, 70, 76) vorgesehen sind, derart, dass der Motor geeignet ist, eine Eingriffsposition und eine Ruheposition zu besitzen, und dass in der Eingriffsposition die Drehachse (44) des Motors (42) sich im Wesentlichen entlang einer Hauptrichtung (A) der Antriebswelle (12) erstreckt, dadurch gekennzeichnet, dass die Mittel zur lösbaren Befestigung (40, 62) vom Bajonett-Typ sind und mindestens einen Stift (40) umfassen, der an der Führungsanordnung (20) angebracht ist und geeignet ist, mit mindestens einem Einschnitt (62) zusammenzuwirken, der in einem Verbindungsstück (60) ausgebildet ist, das verschiebefest mit dem Motor (42) verbunden ist.
  2. Steuereinheit nach Anspruch 1, dadurch gekennzeichnet, dass in der Eingriffsposition der oder jeder Stift (40) in einem entsprechenden Hohlraum (66) des Einschnitts (62) aufgenommen ist, wobei dieser Hohlraum durch einen Zwischenhals (68) begrenzt wird.
  3. Steuereinheit nach Anspruch 2, dadurch gekennzeichnet, dass Rückholmittel, insbesondere elastische Rückholmittel (80), vorgesehen sind, die geeignet sind, jeden Stift (40) axial zum Boden eines entsprechenden Hohlraums (66) hin zurückzubewegen, derart, dass jede unbeabsichtigte Trennung des Motors (42) von den Mitteln zur Umwandlung der Bewegung (56, 70, 76) verhindert wird.
  4. Steuereinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Motor (42) mindestens teilweise in einem Kasten (46) aufgenommen ist, der mit Handhabungsgriffen (48) ausgestattet ist.
  5. Steuereinheit nach Anspruch 4, dadurch gekennzeichnet, dass in der Eingriffsposition der Kasten (46) sich annähernd in der Verlängerung der Führungsanordnung (20) befindet.
  6. Steuereinheit nach Anspruch 5, dadurch gekennzeichnet, dass in der Eingriffsposition der Kasten (46) unterhalb der Führungsanordnung (20) angeordnet ist.
  7. Steuereinheit nach einem der Ansprüche 1 bis 3, in Kombination mit einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass das Verbindungsstück (60) an dem Kasten (46) angebracht ist.
  8. Steuereinheit nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Verbindungsstück (60) zylindrisch ist, und dadurch, dass es geeignet ist, mindestens teilweise in eine Aufnahme (36) der Führungsanordnung (20) einzudringen.
  9. Steuereinheit nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sich die Drehachse (44) des Motors (42) mindestens teilweise in dem Innenvolumen des Verbindungsstückes (60) erstreckt.
  10. Steuereinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zur Umwandlung der Bewegung eine Hubvorrichtung, insbesondere ein Spindelhubgetriebe (70), umfassen, die eine Achse (72) besitzt, die geeignet ist, von der Drehachse (44) des Motors (42) drehend angetrieben zu werden, und dadurch, dass Mittel zur zeitweiligen Kupplung (56, 76) dieser zwei Achsen (44, 72) vorgesehen sind.
  11. Steuereinheit nach Anspruch 10, dadurch gekennzeichnet, dass die Mittel zur zeitweiligen Kupplung zwei Kupplungsglieder (56, 76) umfassen, die geeignet sind, zeitweilig ineinander einzugreifen, wobei jedes Kupplungsglied (56, 76) auf einer entsprechenden Achse (44, 72) angebracht ist.
  12. Steuereinheit nach Anspruch 11, dadurch gekennzeichnet, dass die Kupplungsglieder (56, 76) mit Rippen versehen sind.
  13. Steuereinheit nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass das eine (56) der Kupplungsglieder (56, 76) mit einem flexiblen Gehäuse (58) fest verbunden ist, das geeignet ist, das andere Kupplungsglied (76) in der Position des Eingriffs dieser zwei Kupplungsglieder ineinander aufzunehmen.
  14. Stranggießanlage, welche umfasst: einen Zwischenbehälter (2), der geeignet ist, geschmolzenes Metall aufzunehmen, und der mit einer Öffnung (8) versehen ist, die das Abfließen dieses geschmolzenen Metalls gewährleistet, eine Kokille (18), die stromabwärts dieser Öffnung (8) angeordnet ist, so dass sie dieses geschmolzene Metall aufnehmen kann, eine Verschlussvorrichtung (6), die dazu bestimmt ist, diese Öffnung (8) auf selektive Weise zu verschließen, sowie eine Steuereinheit (10) zur Steuerung dieser Verschlussvorrichtung, dadurch gekennzeichnet, dass die Steuereinheit (10) gemäß einem der vorhergehenden Ansprüche ausgeführt ist.
EP03356191A 2002-12-04 2003-12-03 Steuerungssystem von einem Verschlussteil in einem Stranggiessanlage, und entsprechende Stranggiessanlage Expired - Lifetime EP1426126B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0215290A FR2848131B1 (fr) 2002-12-04 2002-12-04 Ensemble de commande d'un obturateur appartenant a une installation de coulee continue, et installation de coulee continue correspondante
FR0215290 2002-12-04

Publications (2)

Publication Number Publication Date
EP1426126A1 EP1426126A1 (de) 2004-06-09
EP1426126B1 true EP1426126B1 (de) 2011-03-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03356191A Expired - Lifetime EP1426126B1 (de) 2002-12-04 2003-12-03 Steuerungssystem von einem Verschlussteil in einem Stranggiessanlage, und entsprechende Stranggiessanlage

Country Status (7)

Country Link
US (1) US6960317B2 (de)
EP (1) EP1426126B1 (de)
KR (1) KR101081950B1 (de)
CN (1) CN1286599C (de)
AT (1) ATE502708T1 (de)
DE (1) DE60336447D1 (de)
FR (1) FR2848131B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2574414A1 (de) 2011-09-30 2013-04-03 Siemens VAI Metals Technologies GmbH Elektromechanischer Stopfenantrieb
DE102013218345A1 (de) 2013-09-12 2015-03-12 Sms Siemag Ag Vorrichtung zum Verschließen einer Abflussöffnung in einem metallurgischen Gefäß

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8210402B2 (en) * 2009-02-09 2012-07-03 Ajf, Inc. Slag control shape device with L-shape loading bracket
US8580186B2 (en) * 2010-04-19 2013-11-12 Novelis Inc. Flow control apparatus for molten metal
EP3782748A1 (de) * 2019-08-20 2021-02-24 Refractory Intellectual Property GmbH & Co. KG Antriebsvorrichtung für einen stopfenverschluss an einem metallurgischen gefäss

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1139241B (de) * 1960-08-23 1962-11-08 Juenkerather Maschbau Gmbh Betaetigungsvorrichtung fuer den Stopfen einer Giesspfanne
DE1180096B (de) * 1962-03-31 1964-10-22 Juenkerather Maschbau Gmbh Betaetigungsvorrichtung fuer den Stopfen einer Giesspfanne
US4953761A (en) * 1988-09-27 1990-09-04 Inductotherm Corp. Stopper rod spatial control mechanism
JPH04270049A (ja) * 1991-02-25 1992-09-25 Sumitomo Metal Ind Ltd 連続鋳造機のストッパ装置及び湯面レべル制御装置
CH689728A5 (de) * 1995-03-28 1999-09-30 Concast Standard Ag Vorrichtung zum Regeln eines Zuflusses einer Metallschmelze mittels eines Stopfens.
DE60026980T2 (de) * 1999-04-09 2006-12-07 Pyrotek, Inc. Kupplung für ein behandlungssystem für geschmolzenes metall

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2574414A1 (de) 2011-09-30 2013-04-03 Siemens VAI Metals Technologies GmbH Elektromechanischer Stopfenantrieb
WO2013045520A1 (de) 2011-09-30 2013-04-04 Siemens Vai Metals Technologies Gmbh Elektromechanischer stopfenantrieb
DE102013218345A1 (de) 2013-09-12 2015-03-12 Sms Siemag Ag Vorrichtung zum Verschließen einer Abflussöffnung in einem metallurgischen Gefäß
DE102013218345B4 (de) * 2013-09-12 2021-02-04 Sms Group Gmbh Vorrichtung zum Verschließen einer Abflussöffnung in einem metallurgischen Gefäß

Also Published As

Publication number Publication date
CN1504286A (zh) 2004-06-16
EP1426126A1 (de) 2004-06-09
CN1286599C (zh) 2006-11-29
KR101081950B1 (ko) 2011-11-09
KR20040048843A (ko) 2004-06-10
DE60336447D1 (de) 2011-05-05
US20040108636A1 (en) 2004-06-10
US6960317B2 (en) 2005-11-01
FR2848131B1 (fr) 2006-01-06
FR2848131A1 (fr) 2004-06-11
ATE502708T1 (de) 2011-04-15

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