EP1426126A1 - Control assembly for a closing member in a continuous casting machine, and corresponding continuous casting machine - Google Patents

Control assembly for a closing member in a continuous casting machine, and corresponding continuous casting machine Download PDF

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Publication number
EP1426126A1
EP1426126A1 EP03356191A EP03356191A EP1426126A1 EP 1426126 A1 EP1426126 A1 EP 1426126A1 EP 03356191 A EP03356191 A EP 03356191A EP 03356191 A EP03356191 A EP 03356191A EP 1426126 A1 EP1426126 A1 EP 1426126A1
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EP
European Patent Office
Prior art keywords
control assembly
motor
assembly according
movement
continuous casting
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Granted
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EP03356191A
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German (de)
French (fr)
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EP1426126B1 (en
Inventor
Michel Dussud
Patrick Simonnin
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D'etudes Et De Realisations Techniques Sert Ste
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D'etudes Et De Realisations Techniques Sert Ste
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • 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 a shutter belonging to a casting installation continuous, as well as a continuous casting installation provided with such a control assembly.
  • a continuous casting operation consists, first, of pouring molten metal in a tank, also known as a distributor, from a poached.
  • a tank also known as a distributor
  • This tank is furthermore provided with a shutter, also called distaff.
  • the distaff is operated by means of a control assembly, also called actuator, according to a stroke ensuring a satisfactory filling phase of the mold.
  • the shutter control assembly includes a training tree, free of slide in a translational movement relative to a guide assembly.
  • This drive shaft is integral with an arm of return, directly supporting the shutter. It is in addition provided a rotary servo-motor, as well as a device for transforming the rotary movement, imparted by this motor, in a translational movement of the tree.
  • this transformation device movement is realized in the form of a screw jack. he it should also be noted that the motor is offset laterally with respect to the drive shaft, in referring to the main direction of the latter.
  • the shutter control assembly has a relatively large size. Furthermore, it is necessary to provide as many motors as there are guidance, which is disadvantageous in economic terms.
  • the invention proposes to remedy the various disadvantages of the prior art mentioned above.
  • a set of controls a shutter for a continuous casting installation comprising a guide assembly, a drive shaft of the shutter, able to move in translation by relative to the guide assembly, a motor having a rotary axis, as well as means capable of transforming the rotary movement of the motor in a translational movement of the drive shaft, characterized in that it is provided means allowing the removable fixing of the motor on the means of transforming the movement, so that the motor is capable of having a grip position and a rest position and in that, in the gripping position, the rotary axis of the motor extends substantially along a main direction of the drive shaft.
  • the invention also relates to an installation for continuous casting, comprising a tank, which is suitable for receive molten metal and which has an orifice ensuring the flow of this molten metal, an ingot mold arranged downstream of this orifice, so that it can collect this molten metal, a shutter intended to seal selectively this orifice, as well as a set of control of this shutter, characterized in that this control assembly is as defined above.
  • the continuous casting installation illustrated on the Figure 1, includes a tank 2, which is filled with molten metal 4, for example steel. The latter was poured into the tank, from a pocket not shown.
  • This stopper rod can be operated according to its main axis, namely vertically in Figure 1, by through a control assembly 10, or actuator, which will be described more precisely in this following.
  • This control assembly 10 comprises in particular a drive shaft 12, which can be moved in translation along arrow F, in this case vertically. This movement of the shaft 12 then induces a displacement of the stopper 6, materialized by the arrow vertical F ', via an intermediate arm 14.
  • the walls of the nozzle 8 are moreover provided a tube 16, made of a refractory material, which opens into an ingot mold 18.
  • the latter receives a dummy not shown, intended to be progressively removed, in order to ensure in known manner the extraction of a solidified metal bar, also not shown.
  • FIGS 2 to 5 illustrate, more precisely, the control unit 10.
  • control set also includes a set of fixed guide, of conventional type, which is designated in its together by reference 20.
  • This assembly 20 has a cylindrical barrel 22, on which are attached flanges 24, allowing the fixing on a plate 26, integral with the tank 2.
  • This barrel 22 contains, as is known as such, two ball bushings 28, as well as a device 30, allowing conventionally to prevent the rotation of the shaft 12 around its vertical axis A.
  • the barrel 22 is screwed, at its lower end, on a base 32, which is itself extended, opposite of the barrel, by an annular skirt 34.
  • the latter defines thus, with the walls facing the base 32, a housing 36, connected to an opening central unit 38, axially hollowed out in the base 32.
  • the walls of the skirt 34 carry pins 40 extending radially inward.
  • the function of these pawns 40 which are provided here three in number, will be explained in the following.
  • the control assembly 10 further comprises a motor 42, of the conventional type, provided with a rotary axis 44, extending vertically. This engine is partially received in a box 46, fitted with handles 48, as well as a power supply 50.
  • This box 46 is closed, at its upper part facing the barrel 22, of a cover 52, in which is dug a central hole for the passage of axis 44.
  • This the latter is united, through a key 54, of a first coupling member 56, received in a flexible case 58, which will both be described in more detail below.
  • This case 58 is arranged in the interior volume a connecting piece 60, of cylindrical shape, which is fixed to the motor 42 by any suitable means.
  • the wall of this connecting piece 60 is hollowed out with different notches 62, which are provided in a number corresponding to that of pawns 40.
  • each notch 62 which has overall an L shape, opens axially at the level from the end of the connecting piece 60 opposite the cover.
  • This notch is extended by a radial notch 64, which defines an end cavity 66, bordered by a neck intermediate 68.
  • the control assembly 10 also includes means for transforming the rotary movement of the motor 42 in a translational movement of the shaft 12.
  • these means comprise a jack screw 70, known as such, which is housed mainly in the barrel 22 of the guide assembly 20.
  • the axis 72 of this jack 70 which passes through the base 32, is secured, by means of a key 74, to a second coupling member 76.
  • This axis 72 which can be driven by the axis 44 of the motor 42, is able to cooperate, classic way, with a nut 78 secured to the shaft 12.
  • the two coupling members 56 and 76 have grooves, defining two by two of the recesses. In service, in a conventional manner, the grooves of one of these two organs penetrate into the recesses of each other, so there is a possibility temporary coupling, with declutching, between these two organs 56 and 76.
  • member 56 is housed at remains in the flexible housing 58, while the member 76 is able to enter this case temporarily.
  • an elastic element 80 is provided, in the occurrence a spring washer, intended to bring back towards the bottom the coupling member 76.
  • the operator When the motor 42 is detached from the shaft 10, the operator has a part of the engine mentioned above, which is housed in its box 46 provided with handling handles 48, the coupling member 56 finding it accessible.
  • the coupling member 76 present at the lower end of the axis of the jack 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 ensures an axial return effect of each pin 40 at the bottom of the cavity 66, according to arrow f 3 of this same figure 5. This thus prevents any untimely exit from this pin 40, outside of its cavity 66.
  • the motor 42 can be fixed, in a removable manner, on the axis 72 of the screw jack 70.
  • this motor has two positions, namely a grip position, in which the two couplings 56 and 76 cooperate mutually, as well as a rest position, in which the above couplings are distant from each other.
  • the means for fixing this motor 42 to this jack 70 are bayonet type. They do indeed involve a translational movement, combined with a movement of rotation of the motor relative to this cylinder.
  • the axis 44 of the motor 42 drives the shaft 12, by through the means of transformation of the movement, which include the two coupling members 56 and 76, as well as the screw jack 70. In this position, the rotary axis 44 of the motor 42 extends substantially along the main axis A of the drive shaft 12.
  • box 46 in which the motor 42, is located below the barrel 22, substantially in continuation of the latter. This is advantageous, in terms of compactness of the control assembly 10 of the distaff 6.
  • this control assembly 10 is provided with a lever, not shown, intended so classic to manual movement of the shaft 12. This is to be compared with teaching of EP-A-0 734 801, in which the device making it possible to manually operating the stopper rod consists of a handwheel coupled to a ball screw.
  • the invention achieves the objectives previously mentioned.
  • the set of control according to the invention is compact remarkable, in service. This is to compare with art front, in which the motor is offset laterally with respect to the guide assembly.
  • the closure emergency stopper is carried out by gravity, on simple deactivation of the engine.
  • the weight of the mobile system, including the tree, the arm and the stopper, is enough to bring down the distaff, 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 chain of motorization, namely the electronic device for control, cables, motor and ball screw.
  • a failure of one of these organs such as lifting of a cable or an engine failure, thus makes any emergency closing.

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)
  • Paper (AREA)
  • Continuous Casting (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Basic Packing Technique (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Transmission Devices (AREA)

Abstract

An assembly (10) for operating a stopper comprises a guide assembly (20), a shaft (12) for driving the stopper, a motor (42) with a rotary axle (44) and a mechanism (56, 70, 76) for transforming the rotary movement of the motor into a translation movement of the drive shaft. It is also provided with a bayonet system allowing the removable fixation of the motor on the mechanism for translating movement such that the motor is able to have a working position and a rest position, the rotary axle of the motor extending essentially according to a principal direction of the drive shaft in the working position. An Independent claim is also included for a continuous casting installation using this stopper operating assembly.

Description

La présente invention concerne un ensemble de commande d'un obturateur appartenant à une installation de coulée continue, ainsi qu'une installation de coulée continue munie d'un tel ensemble de commande.The present invention relates to a control assembly a shutter belonging to a casting installation continuous, as well as a continuous casting installation provided with such a control assembly.

De façon classique, une opération de coulée continue consiste, dans un premier temps, à déverser du métal fondu dans une cuve, encore dénommée répartiteur, à partir d'une poche. Cette cuve se trouve en outre pourvue d'un obturateur, encore appelé quenouille.Conventionally, a continuous casting operation consists, first, of pouring molten metal in a tank, also known as a distributor, from a poached. This tank is furthermore provided with a shutter, also called distaff.

Lorsque le métal fondu a atteint un niveau donné dans la cuve, il s'agit alors de le déverser dans une lingotière, sous l'effet d'un mouvement de libération de l'obturateur. Ceci initie alors une phase de remplissage de la lingotière, jusqu'à atteindre un niveau donné de consigne.When the molten metal has reached a given level in the tank, it is then a question of pouring it into a ingot mold, under the effect of a liberation movement of the shutter. This then initiates a filling phase of the ingot mold, until reaching a given level of setpoint.

Selon une première variante, il est tout d'abord connu de mettre en oeuvre, de façon manuelle, le démarrage de cette coulée continue. Cependant, outre son relatif manque de répétitivité, cette solution nécessite l'intervention d'au moins un opérateur.According to a first variant, it is first of all known to implement, manually, the start of this casting continues. However, apart from its relative lack repeatability, this solution requires intervention at least one operator.

Afin de remédier à ces inconvénients, il a été proposé de réaliser le démarrage précité, de manière automatique. Dans cet esprit, on manoeuvre la quenouille au moyen d'un ensemble de commande, encore dénommé actionneur, selon une course garantissant une phase de remplissage satisfaisante de la lingotière.In order to remedy these drawbacks, it has been proposed to carry out the aforementioned start-up, automatically. In this spirit, the distaff is operated by means of a control assembly, also called actuator, according to a stroke ensuring a satisfactory filling phase of the mold.

Un tel agencement est notamment connu de EP-A-0 734 801. L'ensemble de commande de l'obturateur, décrit dans ce document, comprend un arbre d'entraínement, libre de coulisser selon un mouvement de translation par rapport à un ensemble de guidage.Such an arrangement is known in particular from EP-A-0 734 801. The shutter control assembly, described in this document, includes a training tree, free of slide in a translational movement relative to a guide assembly.

Cet arbre d'entraínement est solidaire d'un bras de renvoi, supportant de façon directe l'obturateur. Il est par ailleurs prévu un servo-moteur rotatif, ainsi qu'un dispositif permettant de transformer le mouvement rotatif, imparti par ce moteur, en un mouvement de translation de l'arbre.This drive shaft is integral with an arm of return, directly supporting the shutter. It is in addition provided a rotary servo-motor, as well as a device for transforming the rotary movement, imparted by this motor, in a translational movement of the tree.

De façon plus précise, ce dispositif de transformation de mouvement est réalisé sous la forme d'un vérin à vis. Il est par ailleurs à noter que le moteur se trouve décalé latéralement par rapport à l'arbre d'entraínement, en faisant référence à la direction principale de ce dernier.More precisely, this transformation device movement is realized in the form of a screw jack. he it should also be noted that the motor is offset laterally with respect to the drive shaft, in referring to the main direction of the latter.

Cette solution connue présente cependant certains inconvénients.This known solution however presents certain disadvantages.

Ainsi, l'ensemble de commande de l'obturateur présente un encombrement relativement élevé. Par ailleurs, il est nécessaire de prévoir autant de moteurs que d'organes de guidage, ce qui est désavantageux en termes économiques.So the shutter control assembly has a relatively large size. Furthermore, it is necessary to provide as many motors as there are guidance, which is disadvantageous in economic terms.

L'invention se propose de remédier aux différents inconvénients de l'art antérieur évoqués ci-dessus.The invention proposes to remedy the various disadvantages of the prior art mentioned above.

A cet effet, elle a pour objet un ensemble de commande d'un obturateur pour une installation de coulée continue, comprenant un ensemble de guidage, un arbre d'entraínement de l'obturateur, apte à se déplacer en translation par rapport à l'ensemble de guidage, un moteur, possédant un axe rotatif, ainsi que des moyens aptes à transformer le mouvement rotatif du moteur en un mouvement de translation de l'arbre d'entraínement, caractérisé en ce qu'il est prévu des moyens permettant la fixation amovible du moteur sur les moyens de transformation du mouvement, de sorte que le moteur est apte à posséder une position de prise et une position de repos et en ce que, dans la position de prise, l'axe rotatif du moteur s'étend sensiblement selon une direction principale de l'arbre d'entraínement.To this end, it relates to a set of controls a shutter for a continuous casting installation, comprising a guide assembly, a drive shaft of the shutter, able to move in translation by relative to the guide assembly, a motor having a rotary axis, as well as means capable of transforming the rotary movement of the motor in a translational movement of the drive shaft, characterized in that it is provided means allowing the removable fixing of the motor on the means of transforming the movement, so that the motor is capable of having a grip position and a rest position and in that, in the gripping position, the rotary axis of the motor extends substantially along a main direction of the drive shaft.

Selon d'autres caractéristiques de l'invention :

  • les moyens de fixation amovible sont de type à baïonnette ;
  • les moyens de fixation de type à baïonnette comprennent au moins un pion, monté sur l'ensemble de guidage, apte à coopérer avec au moins une encoche ménagée dans une pièce de liaison, solidaire en translation du moteur ;
  • dans la position de prise, le ou chaque pion est reçu dans une cavité correspondante de l'encoche, cavité qui est bordée par un col intermédiaire ;
  • il est prévu des moyens de rappel, notamment élastique, aptes à ramener axialement chaque pion vers le fond d'une cavité correspondante, de manière à empêcher toute désolidarisation intempestive entre le moteur et les moyens de transformation du mouvement ;
  • le moteur est reçu au moins en partie dans un caisson, notamment muni de poignées de manutention ;
  • dans la position de prise, le caisson se situe à peu près dans le prolongement de l'ensemble de guidage ;
  • dans la position de prise, le caisson est disposé au-dessous de l'ensemble de guidage ;
  • la pièce de liaison est montée sur ledit caisson ;
  • la pièce de liaison est cylindrique, et elle est apte à pénétrer au moins partiellement dans un logement de l'ensemble de guidage ;
  • l'axe rotatif du moteur s'étend au moins partiellement dans le volume intérieur de ladite pièce de liaison ;
  • les moyens de transformation du mouvement comprennent un vérin, notamment un vérin à vis, possédant un axe apte à être entraíné en rotation par l'axe rotatif du moteur, et il est prévu des moyens d'accouplement temporaire de ces deux axes ;
  • les moyens d'accouplement temporaire comprennent deux organes d'accouplement, aptes à engrener mutuellement de façon temporaire, chaque organe d'accouplement étant monté sur un axe correspondant ;
  • les organes d'accouplement sont cannelés ;
  • l'un des organes d'accouplement est solidaire d'un boítier souple, apte à recevoir l'autre organe d'accouplement, dans la position d'engrènement mutuelle de ces deux organes.
According to other characteristics of the invention:
  • the removable fixing means are of the bayonet type;
  • the bayonet type fixing means comprise at least one pin, mounted on the guide assembly, capable of cooperating with at least one notch formed in a connecting piece, integral in translation with the motor;
  • in the gripping position, the or each pin is received in a corresponding cavity in the notch, which cavity is bordered by an intermediate neck;
  • return means are provided, in particular elastic, capable of bringing each pin axially towards the bottom of a corresponding cavity, so as to prevent any untimely separation between the motor and the movement transformation means;
  • the engine is received at least partially in a box, in particular provided with handling handles;
  • in the gripping position, the box is located approximately in the extension of the guide assembly;
  • in the gripping position, the box is arranged below the guide assembly;
  • the connecting piece is mounted on said box;
  • the connecting piece is cylindrical, and it is able to penetrate at least partially into a housing of the guide assembly;
  • the rotary axis of the motor extends at least partially in the internal volume of said connecting piece;
  • the means for transforming the movement comprise a jack, in particular a screw jack, having an axis capable of being rotated by the rotary axis of the motor, and means are provided for temporary coupling of these two axes;
  • the temporary coupling means comprise two coupling members, able to mesh with each other temporarily, each coupling member being mounted on a corresponding axis;
  • the coupling members are grooved;
  • one of the coupling members is secured to a flexible housing, capable of receiving the other coupling member, in the position of mutual engagement of these two members.

L'invention a également pour objet une installation de coulée continue, comprenant une cuve, qui est apte à recevoir du métal fondu et qui est munie d'un orifice assurant l'écoulement de ce métal fondu, une lingotière disposée en aval de cet orifice, de manière à pouvoir recueillir ce métal fondu, un obturateur destiné à obturer de façon sélective cet orifice, ainsi qu'un ensemble de commande de cet obturateur, caractérisé en ce que cet ensemble de commande est tel que défini ci-dessus.The invention also relates to an installation for continuous casting, comprising a tank, which is suitable for receive molten metal and which has an orifice ensuring the flow of this molten metal, an ingot mold arranged downstream of this orifice, so that it can collect this molten metal, a shutter intended to seal selectively this orifice, as well as a set of control of this shutter, characterized in that this control assembly is as defined above.

L'invention va être décrite ci-après, en référence aux dessins annexés, donnés uniquement à titre d'exemple non limitatif, dans lesquels :

  • la figure 1 est une vue générale, illustrant une installation de coulée continue conforme à l'invention ;
  • la figure 2 est une vue de face, illustrant un ensemble de commande appartenant à l'installation de coulée continue de la figure 1 ;
  • la figure 3 est une vue en coupe de côté, illustrant l'ensemble de commande de la figure 2 ;
  • la figure 4 est une vue à plus grande échelle, illustrant une partie de cet ensemble de commande ; et
  • la figure 5 est une vue en coupe longitudinale, illustrant une pièce de liaison appartenant à l'ensemble de commande des figures 2 à 4.
The invention will be described below, with reference to the accompanying drawings, given only by way of nonlimiting example, in which:
  • Figure 1 is a general view illustrating a continuous casting installation according to the invention;
  • Figure 2 is a front view illustrating a control assembly belonging to the continuous casting installation of Figure 1;
  • Figure 3 is a side sectional view illustrating the control assembly of Figure 2;
  • Figure 4 is an enlarged view illustrating a part of this control assembly; and
  • FIG. 5 is a view in longitudinal section, illustrating a connecting piece belonging to the control assembly of FIGS. 2 to 4.

L'installation de coulée continue, illustrée sur la figure 1, comprend une cuve 2, qui se trouve remplie de métal fondu 4, par exemple d'acier. Ce dernier a été déversé dans la cuve, depuis une poche non représentée.The continuous casting installation, illustrated on the Figure 1, includes a tank 2, which is filled with molten metal 4, for example steel. The latter was poured into the tank, from a pocket not shown.

Le fond de cette cuve se trouve fermé, de façon connue, par un obturateur 6, ou quenouille, qui définit un orifice inférieur de passage du métal, encore dénommé busette 8. Cette quenouille peut être manoeuvrée selon son axe principal, à savoir verticalement sur la figure 1, par l'intermédiaire d'un ensemble de commande 10, ou actionneur, qui sera décrit de façon plus précise dans ce qui suit.The bottom of this tank is closed, so known, by a shutter 6, or stopper, which defines a lower opening for the passage of metal, also called nozzle 8. This stopper rod can be operated according to its main axis, namely vertically in Figure 1, by through a control assembly 10, or actuator, which will be described more precisely in this following.

Cet ensemble de commande 10 comprend notamment un arbre d'entraínement 12, pouvant être déplacé en translation selon la flèche F, en l'occurrence verticalement. Ce mouvement de l'arbre 12 induit alors un déplacement de la quenouille 6, matérialisé par la flèche verticale F', via un bras intermédiaire 14.This control assembly 10 comprises in particular a drive shaft 12, which can be moved in translation along arrow F, in this case vertically. This movement of the shaft 12 then induces a displacement of the stopper 6, materialized by the arrow vertical F ', via an intermediate arm 14.

Les parois de la busette 8 sont par ailleurs pourvues d'un tube 16, réalisé en un matériau réfractaire, qui débouche dans une lingotière 18. Cette dernière reçoit un mannequin non représenté, destiné à être progressivement retiré, afin d'assurer de façon connue l'extraction d'une barre de métal solidifiée, également non représentée.The walls of the nozzle 8 are moreover provided a tube 16, made of a refractory material, which opens into an ingot mold 18. The latter receives a dummy not shown, intended to be progressively removed, in order to ensure in known manner the extraction of a solidified metal bar, also not shown.

Les figures 2 à 5 illustrent, de façon plus précise, l'ensemble de commande 10.Figures 2 to 5 illustrate, more precisely, the control unit 10.

On y retrouve l'arbre 12, dont l'axe principal, en l'occurrence vertical, est affecté de la référence A, ainsi que le bras de renvoi 14, illustré de façon partielle. L'ensemble de commande comprend également un ensemble de guidage fixe, de type classique, qui est désigné dans son ensemble par la référence 20.We find there the tree 12, whose main axis, in the vertical occurrence, is assigned the reference A, as well as the deflection arm 14, shown partially. The control set also includes a set of fixed guide, of conventional type, which is designated in its together by reference 20.

Cet ensemble 20 possède un fût cylindrique 22, sur lequel sont rapportées des brides 24, permettant la fixation sur une plaque 26, solidaire de la cuve 2. Ce fût 22 renferme, de manière connue en tant que telle, deux douilles à billes 28, ainsi qu'un dispositif 30, permettant de façon classique d'empêcher la rotation de l'arbre 12 autour de son axe vertical A.This assembly 20 has a cylindrical barrel 22, on which are attached flanges 24, allowing the fixing on a plate 26, integral with the tank 2. This barrel 22 contains, as is known as such, two ball bushings 28, as well as a device 30, allowing conventionally to prevent the rotation of the shaft 12 around its vertical axis A.

Le fût 22 se trouve vissé, à son extrémité inférieure, sur une embase 32, qui est elle-même prolongée, à l'opposé du fût, par une jupe annulaire 34. Cette dernière définit ainsi, avec les parois en regard de l'embase 32, un logement 36, mis en communication avec une ouverture centrale 38, creusée axialement dans l'embase 32.The barrel 22 is screwed, at its lower end, on a base 32, which is itself extended, opposite of the barrel, by an annular skirt 34. The latter defines thus, with the walls facing the base 32, a housing 36, connected to an opening central unit 38, axially hollowed out in the base 32.

Par ailleurs, les parois de la jupe 34 portent des pions 40 s'étendant radialement vers l'intérieur. La fonction de ces pions 40, qui sont prévus en l'occurrence au nombre de trois, sera explicitée dans ce qui suit.Furthermore, the walls of the skirt 34 carry pins 40 extending radially inward. The function of these pawns 40, which are provided here three in number, will be explained in the following.

L'ensemble de commande 10 comprend en outre un moteur 42, de type classique, pourvu d'un axe rotatif 44, s'étendant verticalement. Ce moteur est reçu partiellement dans un caisson 46, équipé de poignées 48, ainsi que d'une arrivée de courant 50.The control assembly 10 further comprises a motor 42, of the conventional type, provided with a rotary axis 44, extending vertically. This engine is partially received in a box 46, fitted with handles 48, as well as a power supply 50.

Ce caisson 46 est fermé, à sa partie supérieure tournée vers le fût 22, d'un capot 52, dans lequel est creusé un orifice central de passage de l'axe 44. Ce dernier se trouve solidaire, par l'intermédiaire d'une clavette 54, d'un premier organe d'accouplement 56, reçu dans un boítier souple 58, qui seront tous deux décrits plus en détail dans ce qui suit.This box 46 is closed, at its upper part facing the barrel 22, of a cover 52, in which is dug a central hole for the passage of axis 44. This the latter is united, through a key 54, of a first coupling member 56, received in a flexible case 58, which will both be described in more detail below.

Ce boítier 58 est disposé dans le volume intérieur d'une pièce de liaison 60, de forme cylindrique, qui est fixée sur le moteur 42 par tout moyen approprié. Comme le montre plus particulièrement la figure 5, la paroi de cette pièce de liaison 60 est creusée de différentes encoches 62, qui sont prévues en un nombre correspondant à celui des pions 40.This case 58 is arranged in the interior volume a connecting piece 60, of cylindrical shape, which is fixed to the motor 42 by any suitable means. As the shows more particularly 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 pawns 40.

De façon plus précise, chaque encoche 62, qui présente globalement une forme de L, débouche axialement au niveau de l'extrémité de la pièce de liaison 60 opposée au capot. Cette encoche se prolonge par une échancrure radiale 64, qui définit une cavité d'extrémité 66, bordée par un col intermédiaire 68.More precisely, each notch 62, which has overall an L shape, opens axially at the level from the end of the connecting piece 60 opposite the cover. This notch is extended by a radial notch 64, which defines an end cavity 66, bordered by a neck intermediate 68.

L'ensemble de commande 10 comprend également des moyens permettant de transformer le mouvement rotatif du moteur 42 en un mouvement de translation de l'arbre 12.The control assembly 10 also includes means for transforming the rotary movement of the motor 42 in a translational movement of the shaft 12.

De façon plus précise, ces moyens comprennent un vérin à vis 70, connu en tant que tel, qui se trouve logé principalement dans le fût 22 de l'ensemble de guidage 20. L'axe 72 de ce vérin 70, qui traverse l'embase 32, est solidaire, par l'intermédiaire d'une clavette 74, d'un second organe d'accouplement 76. Cet axe 72, qui peut être entraíné par l'axe 44 du moteur 42, est apte à coopérer, de façon classique, avec un écrou 78 solidaire de l'arbre d'entraínement 12.More specifically, these means comprise a jack screw 70, known as such, which is housed mainly in the barrel 22 of the guide assembly 20. The axis 72 of this jack 70, which passes through the base 32, is secured, by means of a key 74, to a second coupling member 76. This axis 72, which can be driven by the axis 44 of the motor 42, is able to cooperate, classic way, with a nut 78 secured to the shaft 12.

Les deux organes d'accouplement 56 et 76 possèdent des cannelures, délimitant deux à deux des renfoncements. En service, de manière classique, les cannelures de l'un de ces deux organes pénètrent dans les renfoncements de l'autre, de sorte qu'il existe une possibilité d'accouplement temporaire, avec débrayage, entre ces deux organes 56 et 76.The two coupling members 56 and 76 have grooves, defining two by two of the recesses. In service, in a conventional manner, the grooves of one of these two organs penetrate into the recesses of each other, so there is a possibility temporary coupling, with declutching, between these two organs 56 and 76.

Il est à noter que l'organe 56 se trouve logé à demeure dans le boítier souple 58, alors que l'organe 76 est apte à pénétrer dans ce boítier de façon temporaire. Enfin, il est prévu un élément élastique 80, en l'occurrence une rondelle ressort, destiné à ramener vers le bas l'organe d'accouplement 76.It should be noted that member 56 is housed at remains in the flexible housing 58, while the member 76 is able to enter this case temporarily. Finally, an elastic element 80 is provided, in the occurrence a spring washer, intended to bring back towards the bottom the coupling member 76.

Le fonctionnement de l'ensemble de commande 10 décrit ci-dessus va maintenant être explicité.The operation of the control assembly 10 described above will now be explained.

Lorsque le moteur 42 est désolidarisé de l'arbre d'entraínement 10, l'opérateur dispose d'une part du moteur précité, qui est logé dans son caisson 46 pourvu des poignées de manutention 48, l'organe d'accouplement 56 se trouvant accessible. D'autre part, l'organe d'accouplement 76, présent à l'extrémité inférieure de l'axe du vérin 70, se trouve également accessible.When the motor 42 is detached from the shaft 10, the operator has a part of the engine mentioned above, which is housed in its box 46 provided with handling handles 48, the coupling member 56 finding it accessible. On the other hand, the coupling member 76, present at the lower end of the axis of the jack 70, is also accessible.

Il s'agit alors de manipuler le caisson 46, grâce aux poignées 48, selon un mouvement de translation, globalement dirigé vers le haut, de manière à tout d'abord engager la pièce de liaison 60 dans le logement 36.It is then a question of handling the box 46, thanks to the handles 48, in a translational movement, overall directed upward, so as to first engage the connecting piece 60 in the housing 36.

A un moment donné de cette translation, on opère si nécessaire une faible rotation, voisine de quelques degrés, de manière à assurer la coopération des deux organes d'accouplement cannelés 56 et 76. De la sorte, l'organe 76 est alors reçu dans le volume intérieur du boítier souple 58, lui-même solidaire du premier organe d'accouplement 56.At a given point in this translation, we operate if necessary a small rotation, close to a few degrees, so as to ensure the cooperation of the two bodies splined coupling 56 and 76. In this way, the member 76 is then received in the interior volume of the flexible housing 58, itself integral with the first coupling member 56.

Puis, en continuant la translation du caisson 46, vers le haut, les pions 40 se trouvent reçus au voisinage du débouché des différentes encoches 62, ménagées dans cette pièce de liaison 60. Ces pions 40 progressent alors axialement par rapport à ces encoches, selon la flèche f 1 représentée sur la figure 5.Then, continuing the translation of the box 46, upwards, the pins 40 are received in the vicinity of the outlet of the various notches 62, formed in this connecting piece 60. These pins 40 then progress axially with respect to these notches, according to the arrow f 1 shown in FIG. 5.

Lorsque les pions viennent en butée axiale contre les parois des encoches 62, il s'agit alors de faire pivoter le caisson 46. Ceci induit ainsi une progression des pions 40 le long des échancrures 64, selon la flèche f 2 représentée sur la figure 5.When the pins come into axial abutment against the walls of the notches 62, it is then a question of rotating the box 46. This thus induces a progression of the pins 40 along the notches 64, according to the arrow f 2 represented in FIG. 5 .

Au terme de ce mouvement de pivotement, chaque pion 40 est reçu dans une cavité correspondante 66, après avoir franchi un col intermédiaire 68. Il est à noter que la rondelle ressort 80 assure un effet de rappel axial de chaque pion 40 au fond de la cavité 66, selon la flèche f 3 de cette même figure 5. Ceci empêche ainsi toute sortie intempestive de ce pion 40, hors de sa cavité 66.At the end of this pivoting movement, each pin 40 is received in a corresponding cavity 66, after having crossed an intermediate neck 68. It should be noted that the spring washer 80 ensures an axial return effect of each pin 40 at the bottom of the cavity 66, according to arrow f 3 of this same figure 5. This thus prevents any untimely exit from this pin 40, outside of its cavity 66.

Ainsi, le moteur 42 peut être fixé, de façon amovible, sur l'axe 72 du vérin à vis 70. De la sorte, ce moteur possède deux positions, à savoir une position de prise, dans laquelle les deux accouplements 56 et 76 coopèrent mutuellement, ainsi qu'une position de repos, dans laquelle les accouplements précités sont distants l'un de l'autre.Thus, the motor 42 can be fixed, in a removable manner, on the axis 72 of the screw jack 70. In this way, this motor has two positions, namely a grip position, in which the two couplings 56 and 76 cooperate mutually, as well as a rest position, in which the above couplings are distant from each other.

Par ailleurs, dans l'exemple décrit et représenté, les moyens de fixation de ce moteur 42 sur ce vérin 70 sont de type à baïonnette. Ils font en effet intervenir un mouvement de translation, combiné à un mouvement de rotation du moteur par rapport à ce vérin.Furthermore, in the example described and shown, the means for fixing this motor 42 to this jack 70 are bayonet type. They do indeed involve a translational movement, combined with a movement of rotation of the motor relative to this cylinder.

En service, dans la positon de prise évoquée ci-dessus, l'axe 44 du moteur 42 entraíne l'arbre 12, par l'intermédiaire des moyens de transformation du mouvement, qui comprennent les deux organes d'accouplement 56 et 76, ainsi que le vérin à vis 70. Dans cette position de prise, l'axe rotatif 44 du moteur 42 s'étend sensiblement selon l'axe principal A de l'arbre d'entraínement 12.In service, in the socket position mentioned above, the axis 44 of the motor 42 drives the shaft 12, by through the means of transformation of the movement, which include the two coupling members 56 and 76, as well as the screw jack 70. In this position, the rotary axis 44 of the motor 42 extends substantially along the main axis A of the drive shaft 12.

Par ailleurs, le caisson 46, dans lequel est reçu le moteur 42, se trouve au-dessous du fût 22, sensiblement dans le prolongement de ce dernier. Ceci est avantageux, en termes de compacité de l'ensemble de commande 10 de la quenouille 6.Furthermore, the box 46, in which the motor 42, is located below the barrel 22, substantially in continuation of the latter. This is advantageous, in terms of compactness of the control assembly 10 of the distaff 6.

Il est enfin à noter que cet ensemble de commande 10 est pourvu d'un levier, non représenté, destiné de façon classique à la mise en mouvement manuelle de l'arbre d'entraínement 12. Ceci est à comparer avec l'enseignement de EP-A-0 734 801, dans lequel le dispositif permettant de manoeuvrer manuellement la quenouille est constitué d'un volant couplé à une vis à bille.Finally, it should be noted that this control assembly 10 is provided with a lever, not shown, intended so classic to manual movement of the shaft 12. This is to be compared with teaching of EP-A-0 734 801, in which the device making it possible to manually operating the stopper rod consists of a handwheel coupled to a ball screw.

Un tel système ne permet par une utilisation en coulée, car la vitesse de déplacement de la quenouille s'en trouve très limitée. Il est ainsi impossible de réaliser un démarrage manuel d'une coulée, avec un tel dispositif, étant donné que l'ouverture initiale de la quenouille, de l'ordre de 15 à 20 mm, lors d'un démarrage, doit être réalisée en moins d'une seconde.Such a system does not allow use in casting, because the speed of movement of the stopper rod is finds it very limited. It is thus impossible to carry out a manual start of a casting, with such a device, since the initial opening of the stopper rod, the order of 15 to 20 mm, during a start-up, must be done in less than a second.

L'invention permet de réaliser les objectifs précédemment mentionnés.The invention achieves the objectives previously mentioned.

En effet, comme on l'a vu ci-dessus, l'ensemble de commande conforme à l'invention est d'une compacité remarquable, en service. Ceci est à comparer avec l'art antérieur, dans lequel le moteur se trouve décalé latéralement par rapport à l'ensemble de guidage.Indeed, as we saw above, the set of control according to the invention is compact remarkable, in service. This is to compare with art front, in which the motor is offset laterally with respect to the guide assembly.

Par ailleurs, les moyens de fixation amovible du moteur sur le vérin à vis autorisent un démontage rapide de ce dernier.Furthermore, the removable fixing means of the motor on the screw jack allow rapid disassembly of this last.

De la sorte, il n'est pas nécessaire de disposer d'autant de moteurs que d'ensembles de guidage, le moteur étant uniquement réservé à l'étape de coulée. En d'autres termes, les ensemble de guidage qui sont situés à d'autres postes de la coulée continue, tels que le montage, le démontage, le préchauffage ou le refroidissement, n'ont pas besoin d'être munis d'un moteur correspondant.In this way, it is not necessary to have as many motors as there are guide assemblies, the motor being reserved only for the casting stage. In others terms, the guide assemblies that are located at other continuous casting stations, such as assembly, disassembly, preheating or cooling, have no need to have a matching motor.

Cette dernière mesure apparaít ainsi particulièrement avantageuse, en termes économiques.This last measure thus appears particularly advantageous, in economic terms.

Enfin, dans l'agencement de l'invention, la fermeture d'urgence de la quenouille est réalisée par gravité, sur simple désactivation du moteur. Le poids du système mobile, comprenant l'arbre, le bras et la quenouille, suffit ainsi pour faire descendre la quenouille, de manière à permettre une telle fermeture d'urgence.Finally, in the arrangement of the invention, the closure emergency stopper is carried out by gravity, on simple deactivation of the engine. The weight of the mobile system, including the tree, the arm and the stopper, is enough to bring down the distaff, so as to allow such an emergency closure.

Ceci est à comparer avec EP-A-0 734 801, dans lequel il est fait appel à une ressource électrique par accumulation, qui met en oeuvre toute la chaíne de motorisation, à savoir le dispositif électronique de commande, les câbles, le moteur et la vis à billes. This is to be compared with EP-A-0 734 801, in which an electrical resource is used by accumulation, which implements the entire chain of motorization, namely the electronic device for control, cables, motor and ball screw.

Une panne d'un de ces organes, telle que l'arrachage d'un câble ou une panne moteur, rend ainsi impossible toute fermeture d'urgence.A failure of one of these organs, such as lifting of a cable or an engine failure, thus makes any emergency closing.

Claims (16)

Ensemble de commande (10) d'un obturateur (6) pour une installation de coulée continue, comprenant un ensemble de guidage (20), un arbre (12) d'entraínement de l'obturateur (6), apte à se déplacer en translation par rapport à l'ensemble de guidage, un moteur (42), possédant un axe rotatif (44), ainsi que des moyens (56, 70, 76) aptes à transformer le mouvement rotatif du moteur en un mouvement de translation de l'arbre d'entraínement (12), caractérisé en ce qu'il est prévu des moyens (40, 62) permettant la fixation amovible du moteur (42) sur les moyens de transformation du mouvement (56, 70, 76), de sorte que le moteur est apte à posséder une position de prise et une position de repos et en ce que, dans la position de prise, l'axe rotatif (44) du moteur (42) s'étend sensiblement selon une direction principale (A) de l'arbre d'entraínement (12).Control assembly (10) of a shutter (6) for a continuous casting installation, comprising a guide assembly (20), a shaft (12) for driving the shutter (6), able to move in translation relative to the guide assembly, a motor (42), having a rotary axis (44), as well as means (56, 70, 76) capable of transforming the rotary movement of the motor into a translation movement of the 'drive shaft (12), characterized in that means (40, 62) are provided allowing the removable fixing of the motor (42) on the movement transformation means (56, 70, 76), so that the motor is able to have a gripping position and a rest position and in that , in the gripping position, the rotary axis (44) of the motor (42) extends substantially in a main direction (A) of the drive shaft (12). Ensemble de commande selon la revendication 1, caractérisé en ce que les moyens de fixation amovible (40, 62) sont de type à baïonnette.Control assembly according to claim 1, characterized in that the removable fixing means (40, 62) are of the bayonet type. Ensemble de commande selon la revendication 2, caractérisé en ce que les moyens de fixation de type à baïonnette comprennent au moins un pion (40), monté sur l'ensemble de guidage (20), apte à coopérer avec au moins une encoche (62) ménagée dans une pièce de liaison (60), solidaire en translation du moteur (42).Control assembly according to claim 2, characterized in that the bayonet type fixing means comprise at least one pin (40), mounted on the guide assembly (20), capable of cooperating with at least one notch (62 ) formed in a connecting piece (60), integral in translation with the motor (42). Ensemble de commande selon la revendication 3, caractérisé en ce que, dans la position de prise, le ou chaque pion (40) est reçu dans une cavité (66) correspondante de l'encoche (62), cavité qui est bordée par un col intermédiaire (68). Control assembly according to claim 3, characterized in that , in the gripping position, the or each pin (40) is received in a cavity (66) corresponding to the notch (62), cavity which is bordered by a neck intermediate (68). Ensemble de commande selon la revendication 4, caractérisé en ce qu'il est prévu des moyens de rappel, notamment élastique (80), aptes à ramener axialement chaque pion (40) vers le fond d'une cavité (66) correspondante, de manière à empêcher toute désolidarisation intempestive entre le moteur (42) et les moyens de transformation du mouvement (56, 70, 76).Control assembly according to claim 4, characterized in that return means, in particular elastic (80), are provided, capable of bringing each pin (40) axially towards the bottom of a corresponding cavity (66), so to prevent any untimely separation between the motor (42) and the movement transformation means (56, 70, 76). Ensemble de commande selon l'une quelconque des revendications précédentes, caractérisé en ce que le moteur (42) est reçu au moins en partie dans un caisson (46), notamment muni de poignées de manutention (48).Control assembly according to any one of the preceding claims, characterized in that the motor (42) is received at least partly in a box (46), in particular provided with handling handles (48). Ensemble de commande selon la revendication 6, caractérisé en ce que, dans la position de prise, le caisson (46) se situe à peu près dans le prolongement de l'ensemble de guidage (20).Control assembly according to claim 6, characterized in that , in the gripping position, the box (46) is located approximately in the extension of the guide assembly (20). Ensemble de commande selon la revendication 7, caractérisé en ce que, dans la position de prise, le caisson (46) est disposé au-dessous de l'ensemble de guidage (20).Control assembly according to claim 7, characterized in that , in the gripping position, the box (46) is arranged below the guide assembly (20). Ensemble de commande selon l'une quelconque des revendications 3 à 5, prise en combinaison avec l'une quelconque des revendications 6 à 8, caractérisé en ce que la pièce de liaison (60) est montée sur ledit caisson (46).Control assembly according to any one of Claims 3 to 5, taken in combination with any one of Claims 6 to 8, characterized in that the connecting piece (60) is mounted on said box (46). Ensemble de commande selon l'une quelconque des revendications 3 à 9, caractérisé en ce que ladite pièce de liaison (60) est cylindrique, et en ce qu'elle est apte à pénétrer au moins partiellement dans un logement (36) de l'ensemble de guidage (20).Control assembly according to any one of Claims 3 to 9, characterized in that the said connecting piece (60) is cylindrical, and in that it is able to penetrate at least partially into a housing (36) of the guide assembly (20). Ensemble de commande selon l'une quelconque des revendications 3 à 10, caractérisé en ce que l'axe rotatif (44) du moteur (42) s'étend au moins partiellement dans le volume intérieur de ladite pièce de liaison (60).Control assembly according to any one of claims 3 to 10, characterized in that the rotary axis (44) of the motor (42) extends at least partially in the interior volume of said connecting piece (60). Ensemble de commande selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de transformation du mouvement comprennent un vérin, notamment un vérin à vis (70), possédant un axe (72) apte à être entraíné en rotation par l'axe rotatif (44) du moteur (42), et en ce qu'il est prévu des moyens d'accouplement temporaire (56, 76) de ces deux axes (44, 72).Control assembly according to any one of the preceding claims, characterized in that the means for transforming the movement comprise a jack, in particular a screw jack (70), having an axis (72) capable of being rotated by the rotary axis (44) of the motor (42), and in that provision is made for temporary coupling means (56, 76) of these two axes (44, 72). Ensemble de commande selon la revendication 12, caractérisé en ce que les moyens d'accouplement temporaire comprennent deux organes d'accouplement (56, 76), aptes à engréner mutuellement de façon temporaire, chaque organe d'accouplement (56, 76) étant monté sur un axe correspondant (44, 72).Control assembly according to claim 12, characterized in that the temporary coupling means comprise two coupling members (56, 76), able to temporarily mesh with each other, each coupling member (56, 76) being mounted on a corresponding axis (44, 72). Ensemble de commande selon la revendication 13, caractérisé en ce que les organes d'accouplement (56, 76) sont cannelés.Control assembly according to claim 13, characterized in that the coupling members (56, 76) are grooved. Ensemble de commande selon la revendication 13 ou 14, caractérisé en ce que l'un (56) des organes d'accouplement (56, 76) est solidaire d'un boítier souple (58), apte à recevoir l'autre organe d'accouplement (76), dans la position d'engrènement mutuelle de ces deux organes.Control assembly according to claim 13 or 14, characterized in that one (56) of the coupling members (56, 76) is integral with a flexible housing (58), capable of receiving the other member coupling (76), in the position of mutual engagement of these two members. Installation de coulée continue, comprenant une cuve (2), qui est apte à recevoir du métal fondu et qui est munie d'un orifice (8) assurant l'écoulement de ce métal fondu, une lingotière (18), disposée en aval de cet orifice (8), de manière à pouvoir recueillir ce métal fondu, un obturateur (6) destiné à obturer de façon sélective cet orifice (8), ainsi qu'un ensemble de commande (10) de cet obturateur, caractérisée en ce que ledit ensemble de commande (10) est conforme à l'une quelconque des revendications précédentes.Continuous casting installation, comprising a tank (2), which is capable of receiving molten metal and which is provided with an orifice (8) ensuring the flow of this molten metal, an ingot mold (18), disposed downstream of this orifice (8), so as to be able to collect this molten metal, a shutter (6) intended to selectively close this orifice (8), as well as a control assembly (10) of this shutter, characterized in that said control assembly (10) according to any one of the preceding claims.
EP03356191A 2002-12-04 2003-12-03 Control assembly for a closing member in a continuous casting machine, and corresponding continuous casting machine Expired - Lifetime EP1426126B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0215290A FR2848131B1 (en) 2002-12-04 2002-12-04 CONTROL ASSEMBLY FOR A SHUTTER BELONGING TO A CONTINUOUS CASTING PLANT, AND CORRESPONDING CONTINUOUS CASTING INSTALLATION
FR0215290 2002-12-04

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EP (1) EP1426126B1 (en)
KR (1) KR101081950B1 (en)
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AT (1) ATE502708T1 (en)
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EP1426126B1 (en) 2011-03-23
CN1286599C (en) 2006-11-29
US20040108636A1 (en) 2004-06-10
KR20040048843A (en) 2004-06-10
FR2848131A1 (en) 2004-06-11
DE60336447D1 (en) 2011-05-05
FR2848131B1 (en) 2006-01-06
KR101081950B1 (en) 2011-11-09
ATE502708T1 (en) 2011-04-15
CN1504286A (en) 2004-06-16
US6960317B2 (en) 2005-11-01

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