EP0333553B1 - Device for manipulating, for stocking and for introducing the dummy bar into a continnous casting installation - Google Patents

Device for manipulating, for stocking and for introducing the dummy bar into a continnous casting installation Download PDF

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Publication number
EP0333553B1
EP0333553B1 EP19890400615 EP89400615A EP0333553B1 EP 0333553 B1 EP0333553 B1 EP 0333553B1 EP 19890400615 EP19890400615 EP 19890400615 EP 89400615 A EP89400615 A EP 89400615A EP 0333553 B1 EP0333553 B1 EP 0333553B1
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EP
European Patent Office
Prior art keywords
dummy
chain
endless chain
hook
handling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP19890400615
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German (de)
French (fr)
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EP0333553A1 (en
Inventor
Marc Bonnefont
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Clecim SAS
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Clecim SAS
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Publication of EP0333553A1 publication Critical patent/EP0333553A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/085—Means for storing or introducing the starter bars in the moulds

Definitions

  • the subject of the invention is a handling device for storing and introducing a casting start-up dummy into a continuous metal casting installation.
  • a continuous metal casting installation normally comprises, along a casting line, a bottomless ingot mold followed by a device for guiding and secondary cooling of the cast product.
  • the entire installation is placed in a building provided with handling means such as overhead traveling cranes which make it possible to bring the bags filled with liquid metal and to place them above the installation, the metal being poured out. first in an intermediate container and then in the mold. This is placed at the level of a pouring floor on which the personnel move and where the various control means of the installation are arranged.
  • the device for secondary cooling and cooling of the product generally consisting of a cage fitted with rolls for supporting the product and cooling water spraying ramps.
  • the roller cage is curved in an arc of a circle so as to bring the product poured vertically into the ingot mold horizontally. At its exit, it leads into a driving and straightening device also called an extraction cage and then onto a roller table equipped with means for shearing the product cast in slabs or bars which are then evacuated.
  • a device called “dummy” or “false bar” which includes a starting head intended to close off the bottom of the mold at the start of the casting of the metal which solidifies the along the walls of the mold and can then be pulled from below.
  • the starting head which can be detachably hooked onto the cast product, is extended downwards by the manikin properly said, made up for this purpose of a series of elements articulated in the manner of the links of a chain and which descends inside the secondary cooling cage.
  • the latter consists of two series of rollers placed on either side of the product and, from a certain level above the mold, certain rollers are driven in rotation so as to cause the descent of the cast product.
  • the dummy must therefore have a sufficient length to reach the level of the drive rollers so as to be pulled down when starting at the casting speed.
  • the mannequin must obviously be separated from the cast product so that the casting can continue continuously. This is why the secondary cooling and extraction device is provided with means for evacuating the manikin outside the casting line. Many devices have been devised for this purpose. It is possible, for example, to make an opening on one face of the roller cage associated with means for guiding the manikin towards the outside. But we can also, more simply, evacuate the mannequin at the exit of the extraction cage, when it arrives on the roller table.
  • the dummy is taken up by a handling device, which places it on a storage device where it is kept in reserve to be reintroduced into the ingot mold at the start of a new casting.
  • the dummy can be introduced into the mold in two different ways: either from below it, and this is then an “introduction from below”, or from above this one, and it is then an "introduction from above”.
  • a flexible link such as a cable or a chain provided at its end with a handling hook and which is wound on a winch placed at the level of the casting floor.
  • the hook is first placed on standby in front of the manikin evacuation means, that is to say on the side of the cooling cage when the latter is provided with a lateral evacuation opening or between the output of the extraction cage and the means for shearing the cast product.
  • the mannequin is thus removed from the casting line, then reassembled vertically to the level of the casting floor where it is placed in reserve, for example on an elongated storage track.
  • the manikin When the lifting winch is fixed, the manikin must be supported by another member which releases the hooking head from the handling hook and pulls the manikin on the storage track. This is provided with an outlet end opposite the inlet end and which opens above the mold. If the evacuation position of the dummy is not too far from the mold, we can consider having a fixed storage channel, of sufficient length, but to clear the casting floor, it is usual to give the storage lane a length simply of the same order as that of the dummy and place it on a transfer cart which can move on the casting floor between two positions, respectively a dummy ascent position for which the entry end of the storage channel is vertical to the discharge position of the pouring line and a dummy descent position for which the exit end of the storage path is placed vertically in the mold.
  • the descent of the dummy into the mold and then the cooling device must be checked at least until the front end of the dummy can be supported by the drive rollers of the cooling cage.
  • the command and control of the descent of the manikin can be ensured for example by a pair of pinch rollers, placed on either side of the manikin and driven in rotation at a controlled speed.
  • This maneuver is however rather delicate and it is obviously necessary to avoid a sudden fall of the dummy in the ingot mold and the cooling cage which are very fragile organs.
  • the manikin lifting winch is installed at a fixed position on a metal frame integrated either in the casting floor or in the frame of the building and the manikin is supported by another device which moves at the level of the casting to lead it over the mold for a new introduction.
  • the lifting winch is mounted on the transfer carriage so as to move with it.
  • the transfer trolley on which the storage track is placed is provided with rails on which a wagon for supporting the manikin lifting winch can roll.
  • the movement of the wagon on the transfer carriage makes it possible to extend the mannequin on the storage track.
  • the wagon then returns to its initial position and it is provided with a retaining member which engages in the rear end of the mannequin.
  • the wagon carrying the mannequin ascent winch is used, depending on the case, for placing the mannequin on the storage track, then for controlling the descent.
  • the winch on which the lifting hook lifting cable is wound is placed on the transfer trolley of the storage track at the end of output thereof, so as to successively carry out by means of the same winch the raising of the mannequin then its installation on the storage track, the descent of the mannequin into the mold being commanded and controlled by pinch rollers.
  • the subject of the invention is a new handling device capable of carrying out all of the storage lifting operations and of introducing the manikin, and yet less bulky than the known arrangements, which makes it possible to free the casting floor for the maneuvers of the traveling cranes or trolleys serving the casting machine as well as for controlling the operation of this and maintenance work.
  • the operation of the device according to the invention is particularly simple and can be controlled safely.
  • the device according to the invention is therefore of the type in which the mannequin is provided at its front end with a hooking head capable of engaging on a handling hook placed in a waiting position at the exit of the device. guidance and connected by a flexible link to a means for raising the manikin at the level of the casting floor, the device further comprising means for placing the manikin on an elongated storage track comprising an inlet end capable of being placed at the vertical of the raising position of the dummy and an outlet end capable of being placed vertically of the ingot mold and of means for controlling and controlling the descent of the dummy from the storage path in the ingot mold and the device for guidance.
  • the handling device comprises an endless chain stretched between two idler wheels rotatably mounted each around a horizontal shaft, respectively below each end of the storage track and comprising an upper strand passing the along the storage track and a lower return strand and the flexible link for raising the handling hook with the mannequin is connected by its end opposite the hook to a point of attachment on the endless chain, the latter being associated with a drive motor, so that the assembly constitutes a unique means of raising and fitting the mannequin on the storage track by winding the flexible link along the upper strand then the lower strand of the chain as and when measurement of the dummy's ascent and its progress on the storage track.
  • the endless chain is a link chain stretched between two idler gear wheels, at least one of which is locked in rotation on its shaft, the latter being driven by the motor.
  • the storage track consists of two rows of rollers placed on either side of the upper strand of the endless chain and covering a width at least equal to that of the mannequin, said rollers being mounted to rotate around 'horizontal axes perpendicular to the direction of the chain and placed at a level such that the upper part of the rollers is tangent to a horizontal plane extending along the upper strand of the chain, slightly above it.
  • the storage path leads at each end to a pair of guide wheels placed on either side of the corresponding deflection wheel of the endless chain and rotatably mounted around the same rotation shaft.
  • the device comprises a dummy retaining hook fixed to the endless chain and extending transversely outward so as to engage in a link of the dummy when the latter is placed on the support track and to control the downward movement of the dummy in the mold by adjusting the speed of movement of the endless chain.
  • the endless chain, its drive motor and all of the associated members are mounted on a transfer carriage movable on the casting floor between two positions, respectively of raising and lowering of the manikin for which the two return wheels of the endless chain are substantially tangent towards the outside, respectively, to a vertical plane of ascent of the handling hook and to a vertical plane of descent of the dummy in the mold.
  • the device according to the invention with its unique system for lifting and storing the manikin incorporated in the transfer cart has several advantages:
  • FIG 1 there is shown schematically the whole of a continuous casting installation placed inside a building 1 provided with means for supplying ladles 3 such as a traveling crane.
  • ladles 3 such as a traveling crane.
  • the bag 3 is carried by a support 4 above the continuous casting machine proper, the casting being done by means of a dispensing container 5.
  • the casting machine essentially comprises an ingot mold 6 and a guide and cooling cage 7 followed by a drive and straightening apparatus 8. At the outlet of the apparatus 8, the cast product, completely solidified and straightened, is evacuated onto a roller table 9. The assembly is placed below a 10-year-old casting floor at which level the mold 6 is placed.
  • the start of the casting is ensured by a mannequin 12 having the same cross section as the product to be cast.
  • the manikin is shown in more detail in FIGS. 3 to 6 and consists of a link chain preferably having a hollow section open on one side, as seen in FIGS. 4 and 5.
  • the mannequin can be stored on a transfer carriage consisting of a main chassis 11 carried by two pairs of rollers 25 and 26 which roll on a track formed on the casting floor exactly above the machine casting, and therefore centered on the vertical plane passing through the axis of the mold 6 and the cooling cage 7.
  • FIG 1 there is shown the dummy 12 in the start position, its rear end 33 closing the mold 6 while the carriage 11 is in the raised position.
  • This operation is carried out by a hooking chain 15, one end of which is fixed by a special hooking link 18 on the endless chain 17 and the other end of which is fixed on a handling hook 30.
  • the chain 15 hangs vertically passing through an orifice 32 formed in the floor 10 so that the hook 30 comes to be placed in the waiting position at the exit of the straightening trainer device 8.
  • the hook 30 can be positioned in a guide 29 placed at this effect in the roller table 9.
  • the mannequin 12 is controlled to advance at the casting speed by means of the driving rollers 13 of the guide cage 7.
  • the mannequin 12 the rear end 33 of which is removably engaged in the solidified end of the cast product, drives the latter into the guide cage 7 and then leaves the straightening trainer 8 to pass over the table to rollers 9. Its front end 31 then engages in the hook 30 placed in the standby position.
  • An easy-to-design automatic system then controls the drive of the endless chain 17 by means of the motor 23.
  • the hooking link 18 moves towards the mold 6 on the upper strand 17 a of the endless chain 17 by driving the hanging chain 15 and consequently the hook 30 and the mannequin 12 which is suspended there.
  • the chain 15 has a width greater than that of the endless chain 17 and of the wheel 21 and it can come to bear on two smooth-walled return wheels 22, placed on either side of the wheel 21 and mounted idly on the rotation shaft 19 thereof.
  • the wheel 21 ′ is surrounded by a pair of wheels 22 ′ for guiding the attachment chain 15.
  • the chain 15 therefore extends along the upper strand 17 a of the endless chain 17, first passing over the guide wheels 22, then resting on two series of rollers 16 placed on either side of the chain 17, the latter itself being carried by rollers guided in rails integral with the chassis, as seen in FIG. 5.
  • the handling hook 30 therefore raises the manikin 12 vertically through the orifice 32 of the casting floor 10.
  • the attachment chain 15 which remains taut with the weight of the dummy, passes over the guide wheels 22 ′ then runs along the lower strand 17 b of the endless chain 17 passing below the latter.
  • the carriage 11 carries a second row of rollers 27 arranged in pairs on either side of the plane of the endless chain 17, similar to the rollers 16, and which provides a support track extending at the -Dessous the lower strand 17b of the endless chain 17, parallel thereto and which gradually extends the connecting line 15 from the time the link 18 passes attachment on the lower strand 17b .
  • the hook 30 When the hook 30 arrives at the transfer carriage 11, it in turn passes over the guide wheels 22 by driving the hooking head 31 placed at the front end of the dummy 12. As shown in the Figure 6, it forms a hook opening downwards so as to engage the handling hook 30 when the latter is raised and which therefore remains engaged on the handling hook 30 when the latter passes over the return wheels 21 then the upper strand 17 a of the endless chain 17. It is therefore possible to control without interruption, by means of the motor 23, the drive of the endless chain 17; the dummy 12 itself consisting of a link chain, first passes over the idler wheels 21, then extends above the upper strand 17 a on the rollers 16 placed on either side of this last and which therefore constitute a storage channel for the mannequin 12.
  • the movement can be interrupted when the manikin 12 is completely placed on the storage track 16. However, it is advantageous to continue driving the chain 15 until the hooking head 31 of the manikin 12 exceeds the wheels return 21 ′ placed at the front end of the carriage 11, on the side of the mold. In this position, in fact, the hook formed on the head 31 of the mannequin 12 is turned downwards and its profile can be determined so that the handling hook 30 is automatically released under the effect of its weight when it reaches at the level of the support track 27. The attachment head 31 then hangs vertically in the position shown in FIG. 3.
  • the coupling link 18 can be located immediately behind the priming head 33 of the dummy 12.
  • the dimensions of the transfer carriage 11 are therefore determined so that the endless chain 17 has a total length substantially equal to that of the mannequin increased by the length of the attachment chain 15.
  • the attachment link 18 preferably being located at the axis of the idler wheel 21 at the time of attachment (Fig. 1).
  • the mannequin is thus stored on standby on the transfer carriage 11.
  • the movement of the carriage 11 is controlled towards the ingot mold until its lowering position shown in FIG. 2 and for which the priming head 31 which hangs vertically from the front end of the carriage 11 is in alignment with the mold 6.
  • the transfer carriage 11 may be provided with a pinch roller 24 cooperating with a support roller placed on the other side of the mannequin and applied under pressure against the latter.
  • a pinch roller 24 By driving the roller 24 in rotation, it is possible to command and control the downward movement of the mannequin 12 inside the ingot mold and then of the guide device 7 until its front end 31 is at the level of the driving rollers 13 During this movement, the endless chain 17 can be blocked, the mannequin 12 moving on the rollers 16.
  • a second special link 28 in the form of a hook is used which passes through an opening in the mannequin so as to engage on a link thereof, preferably near its rear end 33. All the distances remaining fixed, it suffices to correctly position the hook 28 relative to the handling hook 30 and consequently to the attachment link 18, so that the hook 28 engages in the corresponding orifice provided in the mannequin 12 at the desired position which corresponds to the passage of the hook 28 on the idler 21.
  • the hook 28 it is possible to retaining the descent of the mannequin 12 by applying a resistant torque to the chain 17 by means of the motor 13. In this way, the dummy 12 does not run the risk of escaping from the pinch rollers 24.
  • the pinch rollers 24 could also simply remove the pinch rollers 24 by providing a thrust face on the front part of the hook 28 so that the latter can not only retain the dummy by its rear face at the end of the introduction but also advance the dummy to introduce it into the mold.
  • the dummy must be kept on the rollers 16 of the storage pathway at least by its weight or by guide members.
  • the position of the retaining hook 28 is determined so that it passes over the lower sector of the idler 21 ′ and therefore escapes from the dummy 12 at a time when the latter is already supported by the motor rollers 13
  • the dummy 12 thus released is then placed in the starting position for which the priming head 33 closes the lower end of the mold.
  • the casting then begins and the dummy advances in the guide cage 7 at the casting speed.
  • the carriage 11 can be brought back to the ascent position shown in FIG. 1.
  • the motor 23 continues to control the winding of the endless chain 17 until that the handling hook 30 arrives on the return wheels 21, that is to say above the orifice 32.
  • the chain 17 is then stopped and then driven in the opposite direction so as to lower the hook 30 vertically suspended from the chain 15.
  • the chain 17 is stopped when the hook 30 engages in the guide 29, the hooking link 18 then being substantially at the level of the wheels 21 ′.
  • the invention makes it possible to integrate into the transfer carriage, all the components necessary for lifting, storing and introducing the manikin.
  • the height of the transfer carriage depends above all on the diameter which must be given to the deflection wheels placed at the two ends of the endless chain, this diameter itself being linked to the length of the links of the chain constituting the mannequin.
  • the transfer trolley according to the invention is therefore distinguished by a very small footprint which allows the casting platform to be cleared, the space saving in height even making it possible to reduce the height of the buildings. , which in new installations can lead to very significant savings.

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Description

L'invention a pour objet un dispositif de manutentation de stockage et d'introduction d'un mannequin de démarrage de la coulée dans une installation de coulée continue de métal.The subject of the invention is a handling device for storing and introducing a casting start-up dummy into a continuous metal casting installation.

Une installation de coulée continue de métal comprend normalement, le long d'une ligne de coulée, une lingotière sans fond suivie d'un dispositif de guidage et de refroidissement secondaire du produit coulé. L'ensemble de l'installation est placé dans un bâtiment muni de moyens de manutention tels que des ponts roulants qui permettent d'amener les poches remplies de métal liquide et de les placer au-dessus de l'installation, le métal étant déversé d'abord dans un récipient intermédiaire puis dans la lingotière. Celle-ci est placée au niveau d'un plancher de coulée sur lequel se déplace le personnel et où sont disposés les différents moyens de commande de l'installation. Au-dessous du plancher de coulée est placé le dispositif de guidage et de refroidissement secondaire du produit constitué généralement d'une cage munie de rouleaux de support du produit et de rampes d'aspersion d'eau de refroidissement. Généralement, pour diminuer la hauteur de l'installation, la cage à rouleaux est courbée en arc de cercle de façon à ramener à l'horizontale le produit coulé verticalement dans la lingotière. A sa sortie, elle débouche dans un appareil entraînant et dresseur appelé aussi cage d'extraction puis sur une table à rouleaux équipée de moyens de cisaillage du produit coulé en brames ou barres qui sont ensuite évacuées.A continuous metal casting installation normally comprises, along a casting line, a bottomless ingot mold followed by a device for guiding and secondary cooling of the cast product. The entire installation is placed in a building provided with handling means such as overhead traveling cranes which make it possible to bring the bags filled with liquid metal and to place them above the installation, the metal being poured out. first in an intermediate container and then in the mold. This is placed at the level of a pouring floor on which the personnel move and where the various control means of the installation are arranged. Below the casting floor is placed the device for secondary cooling and cooling of the product, generally consisting of a cage fitted with rolls for supporting the product and cooling water spraying ramps. Generally, to reduce the height of the installation, the roller cage is curved in an arc of a circle so as to bring the product poured vertically into the ingot mold horizontally. At its exit, it leads into a driving and straightening device also called an extraction cage and then onto a roller table equipped with means for shearing the product cast in slabs or bars which are then evacuated.

Pour le démarrage de la coulée, il est habituel d'utiliser un dispositif appelé "mannequin" ou "fausse barre" qui comprend une tête de démarrage destinée à obturer le fond de la lingotière au-début de la coulée du métal qui se solidifie le long des parois de la lingotière et peut ensuite être tiré par le bas. A cet effet, la tête de démarrage, qui peut s'accrocher de façon amovible sur le produit coulé, est prolongée vers le bas par le mannequin proprement dit, constitué à cet effet d'une suite d'éléments articulés à la manière des maillons d'une chaîne et qui descend à l'intérieur de la cage de refroidissement secondaire. Cette dernière constituée de deux séries de rouleaux placés de part et d'autre du produit et, à partir d'un certain niveau au-dessus de la lingotière, certains rouleaux sont entraînés en rotation de façon à provoquer la descente du produit coulé. Le mannequin doit donc avoir une longueur suffisante pour arriver jusqu'au niveau des rouleaux moteurs de façon à être tiré vers le bas au moment du démarrage à la vitesse de coulée.For starting the casting, it is usual to use a device called "dummy" or "false bar" which includes a starting head intended to close off the bottom of the mold at the start of the casting of the metal which solidifies the along the walls of the mold and can then be pulled from below. For this purpose, the starting head, which can be detachably hooked onto the cast product, is extended downwards by the manikin properly said, made up for this purpose of a series of elements articulated in the manner of the links of a chain and which descends inside the secondary cooling cage. The latter consists of two series of rollers placed on either side of the product and, from a certain level above the mold, certain rollers are driven in rotation so as to cause the descent of the cast product. The dummy must therefore have a sufficient length to reach the level of the drive rollers so as to be pulled down when starting at the casting speed.

Le mannequin doit évidemment être séparé du produit coulé de façon que la coulée puisse se poursuivre en continu. C'est pourquoi le dispositif de refroidissement secondaire et d'extraction est muni de moyens d'évacuation du mannequin à l'extérieur de la ligne de coulée. De nombreux dispositifs ont été imaginés à cet effet. On peut, par exemple ménager sur une face de la cage à rouleaux une ouverture associée à des moyens de guidage du mannequin vers l'extérieur. Mais on peut aussi, de façon plus simple, évacuer le mannequin à la sortie de la cage d'extraction, lorsqu'il arrive sur la table à rouleaux.The mannequin must obviously be separated from the cast product so that the casting can continue continuously. This is why the secondary cooling and extraction device is provided with means for evacuating the manikin outside the casting line. Many devices have been devised for this purpose. It is possible, for example, to make an opening on one face of the roller cage associated with means for guiding the manikin towards the outside. But we can also, more simply, evacuate the mannequin at the exit of the extraction cage, when it arrives on the roller table.

A la sortie de la cage d'extraction, le mannequin est repris par un dispositif de manutention, qui le place sur un dispositif de stockage où il est gardé en réserve pour être réintroduit dans la lingotière au moment du démarrage d'une nouvelle coulée.At the exit of the extraction cage, the dummy is taken up by a handling device, which places it on a storage device where it is kept in reserve to be reintroduced into the ingot mold at the start of a new casting.

Selon les types d'installation, on peut introduire le mannequin dans la lingotière de deux façons différentes: soit par le dessous de celle-ci, et il s'agit alors d'une "introduction par le bas", soit par le dessus de celle-ci, et il s'agit alors d'une "introduction par le haut".Depending on the type of installation, the dummy can be introduced into the mold in two different ways: either from below it, and this is then an "introduction from below", or from above this one, and it is then an "introduction from above".

L'introduction du mannequin par le haut de la lingotière est la manière la plus ancienne, et elle reste encore à l'heure actuelle la plus rapide. L'introduction par le bas, en effet, est plus lente, plus délicate, et sujette à incidents.Introducing the dummy from the top of the mold is the oldest way, and is still the fastest. The introduction by the low, in fact, is slower, more delicate, and prone to incidents.

L'introduction par le haut, si elle offre l'avantage de la rapidité, présente néanmoins l'inconvénient d'entraîner des manutentions au niveau et au-dessus du plancher de coulée, que l'on souhaiterait en général dégager au maximum.The introduction from the top, if it offers the advantage of speed, nevertheless has the disadvantage of causing handling at and above the casting floor, which one would generally like to release as much as possible.

De nombreuses dispositions ont été imaginées pour assurer l'extraction et la manutention du mannequin, son stockage et son introduction dans la lingotière. Souvent, pour l'extraction du mannequin, on utilise un lien souple tel qu'un câble ou une chaîne muni à son extrémité d'un crochet de manutention et qui s'enroule sur un treuil placé au niveau du plancher de coulée. Le crochet est d'abord placé en attente devant les moyens d'évacuation du mannequin, c'est-à-dire sur le côté de la cage de refroidissement lorsque celle-ci est munie d'une ouverture d'évacuation latérale ou bien entre la sortie de la cage d'extraction et les moyens de cisaillage du produit coulé. Le mannequin est ainsi retiré de la ligne de coulée, puis remonté verticalement jusqu'au niveau du plancher de coulée où il est mis en réserve, par exemple sur une voie de stockage allongée. Lorsque le treuil de levage est fixe, le mannequin doit être pris en charge par un autre organe qui dégage la tête d'accrochage du crochet de manutention et tire la mannequin sur la voie de stockage. Celle-ci est munie d'une extrémité de sortie opposée à l'extrémité d'entrée et qui débouche au-dessus de la lingotière. Si la position d'évacuation du mannequin n'est pas trop éloignée de la lingotière, on peut envisager de disposer d'une voie de stockage fixe, de longueur suffisante mais, pour dégager la plancher de coulée, il est usuel de donner à la voie de stockage une longueur simplement du même ordre que celle du mannequin et de la placer sur un chariot de transfert qui peut se déplacer sur le plancher de coulée entre deux positions, respectivement une position de remontée du mannequin pour laquelle l'extrémité d'entrée de la voie de stockage est à la verticale de la position d'évacuation de la ligne de coulée et une position de descente du mannequin pour laquelle l'extrémité de sortie de la voie de stockage est mise à la verticale de la lingotière.Many arrangements have been devised to ensure the extraction and handling of the dummy, its storage and its introduction into the mold. Often, for the extraction of the mannequin, a flexible link is used such as a cable or a chain provided at its end with a handling hook and which is wound on a winch placed at the level of the casting floor. The hook is first placed on standby in front of the manikin evacuation means, that is to say on the side of the cooling cage when the latter is provided with a lateral evacuation opening or between the output of the extraction cage and the means for shearing the cast product. The mannequin is thus removed from the casting line, then reassembled vertically to the level of the casting floor where it is placed in reserve, for example on an elongated storage track. When the lifting winch is fixed, the manikin must be supported by another member which releases the hooking head from the handling hook and pulls the manikin on the storage track. This is provided with an outlet end opposite the inlet end and which opens above the mold. If the evacuation position of the dummy is not too far from the mold, we can consider having a fixed storage channel, of sufficient length, but to clear the casting floor, it is usual to give the storage lane a length simply of the same order as that of the dummy and place it on a transfer cart which can move on the casting floor between two positions, respectively a dummy ascent position for which the entry end of the storage channel is vertical to the discharge position of the pouring line and a dummy descent position for which the exit end of the storage path is placed vertically in the mold.

La descente du mannequin dans la lingotière puis le dispositif de refroidissement doivent être contrôlés au moins jusqu'au moment où l'extrémité avant du mannequin peut être prise en charge par les rouleaux moteurs de la cage de refroidissement.The descent of the dummy into the mold and then the cooling device must be checked at least until the front end of the dummy can be supported by the drive rollers of the cooling cage.

La commande et le contrôle de la descente du mannequin peuvent être assurés par exemple par une paire de rouleaux pinceurs, placés de part et d'autre du mannequin et entraînés en rotation à une vitesse contrôlée. Cette manoeuvre est cependant assez délicate et il faut évidemment éviter une chute brutale du mannequin dans la lingotière et la cage de refroidissement qui sont des organes très fragiles.The command and control of the descent of the manikin can be ensured for example by a pair of pinch rollers, placed on either side of the manikin and driven in rotation at a controlled speed. This maneuver is however rather delicate and it is obviously necessary to avoid a sudden fall of the dummy in the ingot mold and the cooling cage which are very fragile organs.

L'ensemble de ces opérations doit donc assurer plusieurs fonctions et, essentiellement, la prise en charge et la remontée du mannequin, sa pose sur la voie de stockage et son introduction dans la lingotière et sa descente à une vitesse contrôlée. Bien entendu, le fonctionnement de ces différents organes doit être synchronisé.All of these operations must therefore perform several functions and, essentially, take over and raise the dummy, place it on the storage lane and introduce it into the mold and lower it at a controlled speed. Of course, the operation of these different organs must be synchronized.

Pour réaliser ces diverses opérations, différentes dispositions ont été imaginées.To carry out these various operations, different arrangements have been devised.

Dans certaines réalisations, le treuil de levage du mannequin est installé à poste fixe sur une ossature métallique intégrée soit au plancher de coulée soit à la charpente du bâtiment et la mannequin est pris en charge par un autre dispositif qui se déplace au niveau du plancher de coulée pour le conduire au-dessus de la lingotière pour une nouvelle introduction.In certain embodiments, the manikin lifting winch is installed at a fixed position on a metal frame integrated either in the casting floor or in the frame of the building and the manikin is supported by another device which moves at the level of the casting to lead it over the mold for a new introduction.

Dans d'autres cas, le treuil de levage est monté sur le chariot de transfert de façon à se déplacer avec celui-ci.In other cases, the lifting winch is mounted on the transfer carriage so as to move with it.

Dans le document FR-A-2 345 250, par exemple, le chariot de transfert sur lequel est placé la voie de stockage est muni de rails sur lesquels peut rouler un wagonnet de support du treuil de levage du mannequin. De la sorte, après avoir remonté l'extrémité avant du mannequin au niveau de la voie de stockage, le déplacement du wagonnet sur le chariot de transfert permet d'étendre le mannequin sur la voie de stockage. Le wagonnet revient alors à sa position initiale et il est muni d'un organe de retenue qui s'engage dans l'extrémité arrière du mannequin. Ainsi, le wagonnet portant le treuil de remontée du mannequin sert, selon les cas à la pose du mannequin sur la voie de stockage, puis au contrôle de la descente.In document FR-A-2 345 250, for example, the transfer trolley on which the storage track is placed is provided with rails on which a wagon for supporting the manikin lifting winch can roll. In this way, after having raised the front end of the mannequin at the level of the storage track, the movement of the wagon on the transfer carriage makes it possible to extend the mannequin on the storage track. The wagon then returns to its initial position and it is provided with a retaining member which engages in the rear end of the mannequin. Thus, the wagon carrying the mannequin ascent winch is used, depending on the case, for placing the mannequin on the storage track, then for controlling the descent.

Dans une autre disposition décrite dans le document DE-A-2 318 158, le treuil sur lequel s'enroule le câble de levage de crochet de manutention est placé sur le chariot de transfert de la voie de stockage au niveau de l'extrémité de sortie de celle-ci, de façon à réaliser successivement au moyen du même treuil la remontée du mannequin puis sa pose sur la voie de stockage, la descente du mannequin dans la lingotière étant commandée et contrôlée par des rouleaux pinceurs.In another arrangement described in document DE-A-2 318 158, the winch on which the lifting hook lifting cable is wound is placed on the transfer trolley of the storage track at the end of output thereof, so as to successively carry out by means of the same winch the raising of the mannequin then its installation on the storage track, the descent of the mannequin into the mold being commanded and controlled by pinch rollers.

De telles réalisations permettent donc de diminuer le nombre d'organes de manutention du mannequin mais l'ensemble est assez lourd et encombrant et son fonctionnement reste complexe.Such embodiments therefore make it possible to reduce the number of mannequin handling members, but the assembly is quite heavy and bulky and its operation remains complex.

L'invention a pour objet ou nouveau dispositif de manutention susceptible de réaliser l'ensemble des opérations de remontée de stockage et d'introduction du mannequin et cependant moins encombrant que les dispositions connues ce qui permet de dégager le plancher de coulée pour les manoeuvres des ponts roulants ou chariots desservant la machine de coulée ainsi que pour le contrôle du fonctionnement de celle-ci et les travaux d'entretien. En outre, le fonctionnement du dispositif selon l'invention est particulièrement simple et peut être contrôlé en toute sécurité.The subject of the invention is a new handling device capable of carrying out all of the storage lifting operations and of introducing the manikin, and yet less bulky than the known arrangements, which makes it possible to free the casting floor for the maneuvers of the traveling cranes or trolleys serving the casting machine as well as for controlling the operation of this and maintenance work. In addition, the operation of the device according to the invention is particularly simple and can be controlled safely.

Le dispositif selon l'invention est donc du type dans lequel le mannequin est muni à son extrémité avant d'une tête d'accrochage susceptible de s'engager sur un crochet de manutention placé dans une position d'attente à la sortie du dispositif de guidage et relié par un lien souple à un moyen de remontée du mannequin au niveau du plancher de coulée, le dispositif comprenant en outre des moyens de pose du mannequin sur une voie de stockage allongée comportant une extrémité d'entrée susceptible d'être placée à la verticale de la position de remontée du mannequin et une extrémité de sortie susceptible d'être placée à la verticale de la lingotière et des moyens de commande et de contrôle de la descente du mannequin depuis la voie de stockage dans la lingotière et le dispositif de guidage.The device according to the invention is therefore of the type in which the mannequin is provided at its front end with a hooking head capable of engaging on a handling hook placed in a waiting position at the exit of the device. guidance and connected by a flexible link to a means for raising the manikin at the level of the casting floor, the device further comprising means for placing the manikin on an elongated storage track comprising an inlet end capable of being placed at the vertical of the raising position of the dummy and an outlet end capable of being placed vertically of the ingot mold and of means for controlling and controlling the descent of the dummy from the storage path in the ingot mold and the device for guidance.

Conformément à l'invention, le dispositif de manutention comprend une chaîne sans fin tendue entre deux roues de renvoi montées rotatives chacune autour d'un arbre horizontal, respectivement au-dessous de chaque extrémité de la voie de stockage et comportant un brin supérieur passant le long de la voie de stockage et un brin inférieur de retour et le lien souple de remontée du crochet de manutention avec le mannequin est relié par son extrémité opposée au crochet à un point d'accrochage sur la chaîne sans fin, cette dernière étant associée à un moteur d'entraînement, de telle sorte que l'ensemble constitue un moyen unique de remontée et de pose du mannequin sur la voie de stockage par enroulement du lien souple le long du brin supérieur puis du brin inférieur de la chaîne au fur et à mesure de la remontée du mannequin et de son avancement sur la voie de stockage.According to the invention, the handling device comprises an endless chain stretched between two idler wheels rotatably mounted each around a horizontal shaft, respectively below each end of the storage track and comprising an upper strand passing the along the storage track and a lower return strand and the flexible link for raising the handling hook with the mannequin is connected by its end opposite the hook to a point of attachment on the endless chain, the latter being associated with a drive motor, so that the assembly constitutes a unique means of raising and fitting the mannequin on the storage track by winding the flexible link along the upper strand then the lower strand of the chain as and when measurement of the dummy's ascent and its progress on the storage track.

De préférence, la chaîne sans fin est une chaîne à maillon tendue entre deux roues dentées de renvoi dont l'une au moins est calée en rotation sur son arbre, ce dernier étant entraîné par le moteur.Preferably, the endless chain is a link chain stretched between two idler gear wheels, at least one of which is locked in rotation on its shaft, the latter being driven by the motor.

De façon particulièrement avantageuse, la voie de stockage est constituée de deux rangées de galets placés de part et d'autre du brin supérieur de la chaîne sans fin et couvrant une largeur au moins égale à celle du mannequin, lesdits galets étant montés rotatifs autour d'axes horizontaux perpendiculaires à la direction de la chaîne et placés à un niveau tel que la partie supérieure des galets soit tangente à un plan horizontal s'étendant le long du brin supérieur de la chaîne, légèrement au-dessus de celui-ci.In a particularly advantageous manner, the storage track consists of two rows of rollers placed on either side of the upper strand of the endless chain and covering a width at least equal to that of the mannequin, said rollers being mounted to rotate around 'horizontal axes perpendicular to the direction of the chain and placed at a level such that the upper part of the rollers is tangent to a horizontal plane extending along the upper strand of the chain, slightly above it.

De plus, la voie de stockage débouche à chaque extrémité sur une paire de roues de guidage placées de part et d'autre de la roue de renvoi correspondante de la chaîne sans fin et montées rotatives autour du même arbre de rotation.In addition, the storage path leads at each end to a pair of guide wheels placed on either side of the corresponding deflection wheel of the endless chain and rotatably mounted around the same rotation shaft.

Selon une autre disposition avantageuse, le dispositif comprend un crochet de retenue du mannequin fixé sur la chaîne sans fin et s'étendant transversalement vers l'extérieur de façon à s'engager dans un maillon du mannequin lors de la pose de ce dernier sur la voie de support et à contrôler le mouvement de descente du mannequin dans la lingotière par réglage de la vitesse de déplacement de la chaîne sans fin.According to another advantageous arrangement, the device comprises a dummy retaining hook fixed to the endless chain and extending transversely outward so as to engage in a link of the dummy when the latter is placed on the support track and to control the downward movement of the dummy in the mold by adjusting the speed of movement of the endless chain.

Dans un mode de réalisation préférentiel, la chaîne sans fin, son moteur d'entraînement et l'ensemble des organes associés sont montés sur un chariot de transfert déplaçable sur le plancher de coulée entre deux positions, respectivement de remontée et de descente du mannequin pour lesquelles les deux roues de renvoi de la chaîne sans fin sont sensiblement tangentes vers l'extérieur, respectivement, à un plan vertical de remontée du crochet de manutention et à un plan vertical de descente du mannequin dans la lingotière.In a preferred embodiment, the endless chain, its drive motor and all of the associated members are mounted on a transfer carriage movable on the casting floor between two positions, respectively of raising and lowering of the manikin for which the two return wheels of the endless chain are substantially tangent towards the outside, respectively, to a vertical plane of ascent of the handling hook and to a vertical plane of descent of the dummy in the mold.

Le dispositif selon l'invention, avec son système unique de levage et de stockage du mannequin incorporé au chariot de transfert présente plusieurs avantages:The device according to the invention, with its unique system for lifting and storing the manikin incorporated in the transfer cart has several advantages:

Son encombrement sur le plancher de coulée est limité à la longueur du mannequin et sa hauteur est peu élevée puisque le moteur unique de commande est placé sur le chariot de transfert au-dessous de la voie de stockage. De plus, le fonctionnement est simple et facile à commander et à contrôler puisque le levage et la translation horizontale du mannequin sont déterminés par le simple enroulement de la chaîne sans fin et que l'accrocrochage et le décrochage de la tête de démarrage du mannequin se font automatiquement, ce qui assure une très bonne continuité de manoeuvre et une parfaite sécurité de fonctionnement.Its size on the casting floor is limited to the length of the manikin and its height is low since the single control motor is placed on the transfer carriage below the storage lane. In addition, the operation is simple and easy to control and control since the lifting and horizontal translation of the mannequin are determined by the simple winding of the endless chain and that the hooking and unhooking of the mannequin start head is automatically, which ensures very good continuity of operation and perfect operational safety.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre d'un mode de réalisation particulier de l'invention, donné à titre d'exemple non limitatif, dans le cas d'une coulée continue de brame.

  • La figure 1 est une vue longitudinale verticale schématique d'une installation de coulée continue comprenant un chariot selon l'invention, ce dernier étant en position d'attente d'accrochage du mannequin à sa sortie de l'appareil entraîneur dresseur.
  • La figure 2 est une vue semblable à la figure 1, mais ici le chariot selon l'invention est en position d'introduction par le haut du mannequin dans la lingotière.
  • La figure 3 est une coupe verticale longitudinale du chariot selon l'invention, en position d'attente du mannequin avant introduction dans la lingotière.
  • La figure 4 est une coupe verticale transversale du chariot selon la ligne A-A de la figure 3, c'est-à-dire dans le plan vertical de l'axe de rotation de la roue dentée motorisée qui met en mouvement la chaîne d'entraînement.
  • La figure 5 est une coupe verticale transversale de la chaîne d'accrochage et de la chaîne d'entraînement selon la ligne B-B de la figure 3, au droit du premier maillon d'accrochage spécial.
  • La figure 6 est une coupe verticale longitudinale montrant l'extrémité avant de la chaîne d'accrochage en position d'accrochage de la tête du mannequin à la sortie de l'appareil entraîneur-dresseur.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows of a particular embodiment of the invention, given by way of nonlimiting example, in the case of a continuous slab casting. .
  • Figure 1 is a schematic vertical longitudinal view of a continuous casting installation comprising a carriage according to the invention, the latter being in the waiting position for hooking the dummy at its exit from the trainer trainer.
  • Figure 2 is a view similar to Figure 1, but here the carriage according to the invention is in the insertion position from the top of the dummy in the mold.
  • Figure 3 is a longitudinal vertical section of the carriage according to the invention, in the waiting position of the dummy before introduction into the mold.
  • Figure 4 is a vertical cross section of the carriage along the line AA of Figure 3, that is to say in the vertical plane of the axis of rotation of the motorized toothed wheel which sets in motion the drive chain .
  • Figure 5 is a vertical cross section of the attachment chain and the drive chain along line BB of Figure 3, to the right of the first link special attachment.
  • Figure 6 is a longitudinal vertical section showing the front end of the attachment chain in the attachment position of the head of the dummy at the outlet of the trainer-trainer.

Sur la figure 1, on a représenté schématiquement l'ensemble d'une installation de coulée continue placé à l'intérieur d'un bâtiment 1 muni de moyens d'amenée des poches de coulée 3 tel qu'un pont roulant. Pour la coulée, la poche 3 est portée par un support 4 au-dessus de la machine de coulée continue proprement dite, la coulée se faisant par l'intermédiaire d'un récipient distributeur 5.In Figure 1, there is shown schematically the whole of a continuous casting installation placed inside a building 1 provided with means for supplying ladles 3 such as a traveling crane. For casting, the bag 3 is carried by a support 4 above the continuous casting machine proper, the casting being done by means of a dispensing container 5.

La machine de coulée comprend essentiellement une lingotière 6 et une cage de guidage et de refroidissement 7 suivie d'un appareil d'entraînement et de dressage 8. A la sortie de l'appareil 8, le produit coulé, complètement solidifié et redressé, est évacué sur une table à rouleaux 9. L'ensemble est placé au-dessous d'un plancher de coulée 10 an niveau duquel est placée la lingotière 6.The casting machine essentially comprises an ingot mold 6 and a guide and cooling cage 7 followed by a drive and straightening apparatus 8. At the outlet of the apparatus 8, the cast product, completely solidified and straightened, is evacuated onto a roller table 9. The assembly is placed below a 10-year-old casting floor at which level the mold 6 is placed.

Le démarrage de la coulée est assuré par un mannequin 12 ayant même section transversale que le produit à couler. Le mannequin est représenté plus en détails sur les figures 3 à 6 et est constitué d'une chaîne à maillon ayant de préférence, une section creuse ouverte sur un côté, comme on le voit sur les figures 4 et 5.The start of the casting is ensured by a mannequin 12 having the same cross section as the product to be cast. The manikin is shown in more detail in FIGS. 3 to 6 and consists of a link chain preferably having a hollow section open on one side, as seen in FIGS. 4 and 5.

Selon une disposition classique, le mannequin peut-être stocké sur un chariot de transfert constitué d'un châssis principal 11 porté par deux paires de galets 25 et 26 qui roulent sur une voie ménagée sur le plancher de coulée exactement au-dessus de la machine de coulée, et part conséquent centré sur le plan vertical passant par l'axe de la lingotière 6 et de la cage de refroidissement 7.According to a conventional arrangement, the mannequin can be stored on a transfer carriage consisting of a main chassis 11 carried by two pairs of rollers 25 and 26 which roll on a track formed on the casting floor exactly above the machine casting, and therefore centered on the vertical plane passing through the axis of the mold 6 and the cooling cage 7.

Sur le chariot 11 est montée une chaîne sans fin 17 à maillons, tendue horizontalement entre deux roues dentées 21, 21′ montées rotatives autour d'arbres horizontaux 19, 19′ tournant sur des paliers 20 aux deux extrémités du châssis 11. Au moins l'un des arbres, par exemple l'arbre 19 sur lequel est clavetée la roue 21 placée à l'arrière du chariot 11, c'est-à-dire du côté opposé à la lingotière 6, est entraîné en rotation par un ensemble moto-réducteur 23 fixé sur le châssis du chariot 11 ou bien calé en porte-à-faux en bout de l'arbre 19.On the carriage 11 is mounted an endless chain 17 with links, stretched horizontally between two toothed wheels 21, 21 ′ rotatably mounted around horizontal shafts 19, 19 ′ rotating on bearings 20 at the two ends of the chassis 11. At least one of the shafts, for example the shaft 19 on which the wheel 21 is keyed placed at the rear of the carriage 11, that is to say say on the side opposite to the mold 6, is rotated by a geared motor assembly 23 fixed on the chassis of the carriage 11 or else wedged in overhang at the end of the shaft 19.

Sur la figure 1, on a représenté le mannequin 12 en position de démarrage, son extrémité arrière 33 obturant la lingotière 6 alors que le chariot 11 se trouve en position de remontée. Cette opération est effectuée par une chaîne d'accrochage 15 dont une extrémité est fixée par un maillon spécial d'accrochage 18 sur la chaîne sans fin 17 et dont l'autre extrémité est fixée sur un crochet de manutention 30. La chaîne 15 pend verticalement en passant par un orifice 32 ménagé dans le plancher 10 de telle sorte que le crochet 30 vienne se placer en position d'attente à la sortie de l'appareil entraîneur dresseur 8. Le crochet 30 peut être positionné dans un guide 29 placé à cet effet dans la table à rouleaux 9. Lorsque l'acier coulé dans la lingotière a commencé à se solidifier, on commande l'avancement du mannequin 12 à la vitesse de coulée au moyen des rouleaux moteurs 13 de la cage de guidage 7. Le mannequin 12, dont l'extrémité arrière 33 est engagée de façon amovible dans l'extrémité solidifiée du produit coulé entraîne ce dernier dans la cage de guidage 7 puis sort de l'appareil entraîneur dresseur 8 pour passer sur la table à rouleaux 9. Son extrémité avant 31 s'engage alors dans le crochet 30 placé en position d'attente. Un système automatique facile à concevoir commande alors l'entraînement de la chaîne sans fin 17 au moyen du moteur 23. Le maillon d'accrochage 18 se déplace vers la lingotière 6 sur le brin supérieur 17a de la chaîne sans fin 17 en entraînant la chaîne d'accrochage 15 et par conséquent la crochet 30 et le mannequin 12 qui y est suspendu. Comme on l'a représenté sur la figure 4, la chaîne 15 a une largeur supérieure à celle de la chaîne sans fin 17 et de la roue 21 et elle peut venir prendre appui sur deux roues de renvoi à paroi lisse 22, placées de part et d'autre de la roue 21 et montées folles sur l'arbre de rotation 19 de celle-ci. De la même façon à l'autre extrémité du chariot, la roue 21′ est encadrée par une paire de roues 22′ de guidage de la chaîne d'accrochage 15.In Figure 1, there is shown the dummy 12 in the start position, its rear end 33 closing the mold 6 while the carriage 11 is in the raised position. This operation is carried out by a hooking chain 15, one end of which is fixed by a special hooking link 18 on the endless chain 17 and the other end of which is fixed on a handling hook 30. The chain 15 hangs vertically passing through an orifice 32 formed in the floor 10 so that the hook 30 comes to be placed in the waiting position at the exit of the straightening trainer device 8. The hook 30 can be positioned in a guide 29 placed at this effect in the roller table 9. When the steel poured into the ingot mold has begun to solidify, the mannequin 12 is controlled to advance at the casting speed by means of the driving rollers 13 of the guide cage 7. The mannequin 12, the rear end 33 of which is removably engaged in the solidified end of the cast product, drives the latter into the guide cage 7 and then leaves the straightening trainer 8 to pass over the table to rollers 9. Its front end 31 then engages in the hook 30 placed in the standby position. An easy-to-design automatic system then controls the drive of the endless chain 17 by means of the motor 23. The hooking link 18 moves towards the mold 6 on the upper strand 17 a of the endless chain 17 by driving the hanging chain 15 and consequently the hook 30 and the mannequin 12 which is suspended there. As shown in Figure 4, the chain 15 has a width greater than that of the endless chain 17 and of the wheel 21 and it can come to bear on two smooth-walled return wheels 22, placed on either side of the wheel 21 and mounted idly on the rotation shaft 19 thereof. Similarly, at the other end of the carriage, the wheel 21 ′ is surrounded by a pair of wheels 22 ′ for guiding the attachment chain 15.

Au fur et à mesure de l'avancement du maillon d'accrochage 18, la chaîne 15 s'étend donc le long du brin supérieur 17a de la chaîne sans fin 17 en passant d'abord sur les roues de guidage 22, puis en reposant sur deux séries de galets 16 placées de part et d'autre de la chaîne 17, celle-ci étant elle-même portée par des galets guidés dans des rails solidaires du châssis, comme on le voit sur la figure 5.As the hooking link 18 advances, the chain 15 therefore extends along the upper strand 17 a of the endless chain 17, first passing over the guide wheels 22, then resting on two series of rollers 16 placed on either side of the chain 17, the latter itself being carried by rollers guided in rails integral with the chassis, as seen in FIG. 5.

Le crochet de manutention 30 remonte donc verticalement le mannequin 12 en passant par l'orifice 32 du plancher de coulée 10.The handling hook 30 therefore raises the manikin 12 vertically through the orifice 32 of the casting floor 10.

Lorsque le maillon d'accrochage 18 arrive à l'extrémité avant du chariot de transfert 11, la chaîne d'accrochage 15, qui reste tendue par le poids du mannequin, passe sur les roues de guidage 22′ puis longe le brin inférieur 17b de la chaîne sans fin 17 en passant au-dessous de ce dernier. C'est pourquoi le chariot 11 porte une seconde rangée de galets 27 disposés par paire de part et d'autre du plan de la chaîne sans fin 17, de façon analogue aux galets 16, et qui ménage une voie de support s'étendant au-dessous du brin inférieur 17b de la chaîne sans fin 17, parallèlement à celui-ci et sur laquelle s'étend progressivement la chaîne d'accrochage 15 à partir du moment où le maillon d'accrochage 18 passe sur le brin inférieur 17b.When the attachment link 18 arrives at the front end of the transfer carriage 11, the attachment chain 15, which remains taut with the weight of the dummy, passes over the guide wheels 22 ′ then runs along the lower strand 17 b of the endless chain 17 passing below the latter. This is why the carriage 11 carries a second row of rollers 27 arranged in pairs on either side of the plane of the endless chain 17, similar to the rollers 16, and which provides a support track extending at the -Dessous the lower strand 17b of the endless chain 17, parallel thereto and which gradually extends the connecting line 15 from the time the link 18 passes attachment on the lower strand 17b .

Lorsque le crochet 30 arrive au niveau du chariot de transfert 11, il passe à son tour sur les roues de guidage 22 en entraînant la tête d'accrochage 31 placée à l'extrémité avant du mannequin 12. Comme représenté sur la figure 6, celle-ci forme un crochet s'ouvrant vers le bas de façon à s'engager sur le crochet de manutention 30 lorsque celui-ci est soulevé et qui reste donc engagé sur le crochet de manutention 30 lorsque celui-ci passe sur les roues de renvoi 21 puis le brin supérieur 17a de la chaîne sans fin 17. On peut donc commander sans interruption, au moyen du moteur 23, l'entraînement de la chaîne sans fin 17; le mannequin 12 constitué lui-même d'une chaîne à maillons, passe d'abord sur les roues de renvoi 21, puis s'étend au-dessus du brin supérieur 17a sur les galets 16 placés de part et d'autre de ce dernier et qui constituent donc une voie de stockage du mannequin 12.When the hook 30 arrives at the transfer carriage 11, it in turn passes over the guide wheels 22 by driving the hooking head 31 placed at the front end of the dummy 12. As shown in the Figure 6, it forms a hook opening downwards so as to engage the handling hook 30 when the latter is raised and which therefore remains engaged on the handling hook 30 when the latter passes over the return wheels 21 then the upper strand 17 a of the endless chain 17. It is therefore possible to control without interruption, by means of the motor 23, the drive of the endless chain 17; the dummy 12 itself consisting of a link chain, first passes over the idler wheels 21, then extends above the upper strand 17 a on the rollers 16 placed on either side of this last and which therefore constitute a storage channel for the mannequin 12.

Le mouvement peut être interrompu lorsque le mannequin 12 est entièrement posé sur la voie de stockage 16. Cependant, il est intéressant de continuer l'entraînement de la chaîne 15 jusqu'à ce que la tête d'accrochage 31 du mannequin 12 dépasse les roues de renvoi 21′ placées à l'extrémité avant du chariot 11, du côté de la lingotière. Dans cette position, en effet, le crochet ménagé sur la tête 31 du mannequin 12 est tourné vers le bas et son profil peut être déterminé de façon que le crochet de manutention 30 se dégage automatiquement sous l'effet de son poids lorsqu'il parvient au niveau de la voie de support 27. La tête d'accrochage 31 pend alors verticalement dans la position représentée sur la figure 3.The movement can be interrupted when the manikin 12 is completely placed on the storage track 16. However, it is advantageous to continue driving the chain 15 until the hooking head 31 of the manikin 12 exceeds the wheels return 21 ′ placed at the front end of the carriage 11, on the side of the mold. In this position, in fact, the hook formed on the head 31 of the mannequin 12 is turned downwards and its profile can be determined so that the handling hook 30 is automatically released under the effect of its weight when it reaches at the level of the support track 27. The attachment head 31 then hangs vertically in the position shown in FIG. 3.

Comme on l'a également représenté sur cette figure, la maillon d'accrochage 18 peut se trouver immédiatement en arrière de la tête d'amorçage 33 du mannequin 12. Les dimensions du chariot de transfert 11 sont donc déterminées pour que la chaîne sans fin 17 ait une longueur totale sensiblement égale à celle du mannequin augmentée de la longueur de la chaîne d'accrochage 15. Pour réduire la longueur du chariot 11, il est intéressant de donner à la chaîne 15 une longueur minimale sensiblement égale à la différence de niveau entre la table à rouleaux 9 d'évacuation du produit et la chaîne sans fin 17, le maillon d'accrochage 18 se trouvant, de préférence, au niveau de l'axe de la roue de renvoi 21 au moment de l'accrochage (Fig. 1).As also shown in this figure, the coupling link 18 can be located immediately behind the priming head 33 of the dummy 12. The dimensions of the transfer carriage 11 are therefore determined so that the endless chain 17 has a total length substantially equal to that of the mannequin increased by the length of the attachment chain 15. To reduce the length of the carriage 11, it is advantageous to give the chain 15 a minimum length substantially equal to the difference in level between the roller table 9 for discharging the product and the endless chain 17, the attachment link 18 preferably being located at the axis of the idler wheel 21 at the time of attachment (Fig. 1).

Le mannequin est ainsi rangé en attente sur le chariot de transfert 11. En cas de nouvelle introduction, on commande le déplacement du chariot 11 vers la lingotière jusqu'à sa position de descente représentée sur la figure 2 et pour laquelle la tête d'amorçage 31 qui pend verticalement à l'extrémité avant du chariot 11 se trouve dans l'alignement de la lingotière 6.The mannequin is thus stored on standby on the transfer carriage 11. In the event of a new introduction, the movement of the carriage 11 is controlled towards the ingot mold until its lowering position shown in FIG. 2 and for which the priming head 31 which hangs vertically from the front end of the carriage 11 is in alignment with the mold 6.

Le chariot de transfert 11 peut être muni d'un rouleau pinceur 24 coopérant avec un rouleau d'appui placé de l'autre côté du mannequin et appliqué sous pression contre ce dernier. Par entraînement en rotation du rouleau 24, on peut commander et contrôler le mouvement de descente du mannequin 12 à l'intérieur de la lingotière puis du dispositif de guidage 7 jusqu'à ce que son extrémité avant 31 se trouve au niveau des rouleaux moteurs 13. Pendant ce mouvement, la chaîne sans fin 17 peut être bloquée, le mannequin 12 se déplaçant sur les galets 16.The transfer carriage 11 may be provided with a pinch roller 24 cooperating with a support roller placed on the other side of the mannequin and applied under pressure against the latter. By driving the roller 24 in rotation, it is possible to command and control the downward movement of the mannequin 12 inside the ingot mold and then of the guide device 7 until its front end 31 is at the level of the driving rollers 13 During this movement, the endless chain 17 can be blocked, the mannequin 12 moving on the rollers 16.

Cependant, il est intéressant de contrôler également le mouvement de descente du mannequin au moyen de la chaîne sans fin 17. A cet effet, on utilise un second maillon spécial 28 en forme de crochet qui passe dans une ouverture ménagée dans le mannequin de façon à s'engager sur un maillon de celui-ci, de préférence à proximité de son extrémité arrière 33. Toutes les distances restant fixes, il suffit de positionner correctement le crochet 28 par rapport au crochet de manutention 30 et par conséquent au maillon d'accrochage 18, pour que le crochet 28 s'engage dans l'orifice correspondant ménagé dans le mannequin 12 à la position voulue qui correspond au passage du crochet 28 sur la roue de renvoi 21. Par l'intermédiaire du crochet 28, il est possible de retenir la descente du mannequin 12 en appliquant un couple résistant sur la chaîne 17 au moyen du moteur 13. De la sorte, le mannequin 12 ne risque pas d'échapper aux rouleaux pinceurs 24.However, it is also advantageous to control the downward movement of the mannequin by means of the endless chain 17. For this purpose, a second special link 28 in the form of a hook is used which passes through an opening in the mannequin so as to engage on a link thereof, preferably near its rear end 33. All the distances remaining fixed, it suffices to correctly position the hook 28 relative to the handling hook 30 and consequently to the attachment link 18, so that the hook 28 engages in the corresponding orifice provided in the mannequin 12 at the desired position which corresponds to the passage of the hook 28 on the idler 21. By means of the hook 28, it is possible to retaining the descent of the mannequin 12 by applying a resistant torque to the chain 17 by means of the motor 13. In this way, the dummy 12 does not run the risk of escaping from the pinch rollers 24.

Cependant, on pourrait également supprimer simplement les rouleaux pinceurs 24 en ménageant une face de poussée sur la partie avant du crochet 28 pour que ce dernier puisse non seulement retenir le mannequin par sa face arrière à la fin de l'introduction mais également faire avancer la mannequin pour l'introduire dans la lingotière. Dans ce cas, le mannequin doit être maintenu sur les galets 16 de la voie de stockage au moins par son poids ou par des organes de guidage.However, one could also simply remove the pinch rollers 24 by providing a thrust face on the front part of the hook 28 so that the latter can not only retain the dummy by its rear face at the end of the introduction but also advance the dummy to introduce it into the mold. In this case, the dummy must be kept on the rollers 16 of the storage pathway at least by its weight or by guide members.

La position du crochet de retenue 28 est déterminée pour que celui-ci passe sur le secteur inférieur de la roue de renvoi 21′ et par conséquent échappe au mannequin 12 à un moment où ce dernier est déjà pris en charge par les rouleaux-moteurs 13. Le mannequin 12 ainsi libéré est alors mis dans la position de démarrage pour laquelle la tête d'amorçage 33 ferme l'extrémité inférieure de la lingotière. La coulée commence alors et le mannequin avance dans la cage de guidage 7 à la vitesse de coulée.The position of the retaining hook 28 is determined so that it passes over the lower sector of the idler 21 ′ and therefore escapes from the dummy 12 at a time when the latter is already supported by the motor rollers 13 The dummy 12 thus released is then placed in the starting position for which the priming head 33 closes the lower end of the mold. The casting then begins and the dummy advances in the guide cage 7 at the casting speed.

Dès le décrochage du mannequin 12, on peut faire revenir le chariot 11 en arrière jusqu'à la position de remontée représentée sur la figure 1. Cependant, le moteur 23 continue à commander l'enroulement de la chaîne sans fin 17 jusqu'à ce que le crochet de manutention 30 arrive sur les roues de renvoi 21, c'est-à-dire au-dessus de l'orifice 32. La chaîne 17 est alors arrêtée puis entraînée en sens inverse de façon à faire descendre verticalement le crochet 30 suspendu à la chaîne 15. La chaîne 17 est arrêtée lorsque le crochet 30 s'engage dans le guide 29, le maillon d'accrochage 18 étant alors sensiblement au niveau des roues 21′.As soon as the mannequin 12 comes off the hook, the carriage 11 can be brought back to the ascent position shown in FIG. 1. However, the motor 23 continues to control the winding of the endless chain 17 until that the handling hook 30 arrives on the return wheels 21, that is to say above the orifice 32. The chain 17 is then stopped and then driven in the opposite direction so as to lower the hook 30 vertically suspended from the chain 15. The chain 17 is stopped when the hook 30 engages in the guide 29, the hooking link 18 then being substantially at the level of the wheels 21 ′.

On se trouve alors dans la position de la figure 1, en attente du mannequin 12.We are then in the position of FIG. 1, awaiting the mannequin 12.

On voit que l'invention permet d'intégrer dans le chariot de transfert, tous les organes nécessaires pour le levage, le stockage et l'introduction du mannequin. En pratique, la hauteur du chariot de transfert dépend surtout du diamètre que l'on doit donner aux roues de renvoi placées aux deux extrémités de la chaîne sans fin, ce diamètre étant lié lui-même à la longueur des maillons de la chaîne constituant le mannequin. Par rapport aux autres dispositions utilisées jusqu'à présent, le chariot de transfert selon l'invention se distingue donc par un encombrement très réduit qui permet de dégager la plateforme de coulée, le gain de place en hauteur permettant même de réduire la hauteur des bâtiments, ce qui, dans les installations nouvelles peut entraîner une économie très importante.We see that the invention makes it possible to integrate into the transfer carriage, all the components necessary for lifting, storing and introducing the manikin. In practice, the height of the transfer carriage depends above all on the diameter which must be given to the deflection wheels placed at the two ends of the endless chain, this diameter itself being linked to the length of the links of the chain constituting the mannequin. Compared to the other arrangements used up to now, the transfer trolley according to the invention is therefore distinguished by a very small footprint which allows the casting platform to be cleared, the space saving in height even making it possible to reduce the height of the buildings. , which in new installations can lead to very significant savings.

Mais en outre, l'ensemble des mouvements nécessaires pour le levage, le stockage et même l'introduction du mannequin peut être commandé par un seul groupe moto-réducteur. Il en résulte une très bonne continuité du mouvement et un fonctionnement simple, facile à contrôler et en toute sécurité.But in addition, all the movements necessary for lifting, storage and even the introduction of the manikin can be controlled by a single geared motor group. This results in very good continuity of movement and simple operation, easy to control and safely.

Il est bien entendu que le mode de réalisation qui vient d'être décrit n'a été donné qu'à titre d'exemple et que l'on pourrait, sans sortir du cadre de protection défini par les revendications, envisager des cariantes ou des perfectionnements faisant appel à des moyens équivalents. En particulier, on a décrit le dispositif dans le cas où l'évacuation du mannequin se fait à la sortie de l'appareil entraîneur-dresseur mais le dispositif serait également applicable lorsque le mannequin est évacué à un autre endroit, par exemple sur le côté de la cage de refroidissement secondaire. Les dimensions des différents organes, notamment la longueur de la chaîne d'accrochage 15 et celle de la chaîne sans fin 17 devraient évidemment être prévues en conséquence.It is understood that the embodiment which has just been described has been given by way of example and that one could, without departing from the protective framework defined by the claims, consider cariantes or improvements using equivalent means. In particular, the device has been described in the case where the manikin is evacuated at the exit from the trainer-trainer device, but the device would also be applicable when the manikin is evacuated to another place, for example on the side of the secondary cooling cage. The dimensions of the various members, in particular the length of the attachment chain 15 and that of the endless chain 17 should obviously be provided for accordingly.

Par ailleurs, il est particulièrement avantageux d'utiliser un chariot de transfert déplaçable pour dégager le plancher de coulée notamment autour de la lingotière mais, il ne serait pas interdit de mettre en oeuvre l'invention sans utiliser un chariot de transfert, la chaîne sans fin et la voie de stockage étant alors fixes.Furthermore, it is particularly advantageous to use a movable transfer carriage to release the pouring floor in particular around the mold but, it would not be prohibited to implement the invention without using a transfer carriage, the endless chain and the storage path then being fixed.

Les signes de référence insérés après les caractéristiques techniques mentionnées dans les revendications, ont pour seul but de faciliter la compréhension de ces dernières, et n'en limitent aucunement la portée.The reference signs inserted after the technical characteristics mentioned in the claims, have the sole purpose of facilitating the understanding of the latter, and in no way limit their scope.

Claims (11)

1. Device for handling, for storage and for insertion of a dummy for starting the run-off in a continuous metal installation, comprising, along a pouring line, a bottomless ingot mould (6) placed at the level of a casting floor (10) and a device (7) for guiding and for secondary cooling of the cast product and in which the starting of the run-off is performed by means of a dummy (12) constituted by an elongate chain with links comprising a back end fitted with a starting head (33) and a front end fitted with a coupling head (31) capable of engaging in detachable manner on a handling hook (30) placed in a stand-by position (29) and connected by a flexible link (15) to a means (23) for raising the dummy (12) to the level of the casting floor (10), the device further comprising means for placing the dummy (12) onto an elongate storage track (16) comprising an entry end capable of being placed vertically above the position for raising of the dummy (12) and an exit end capable of being placed vertically above the ingot mould (6), and means (24) for controlling and for monitoring the lowering of the dummy into the ingot mould (6), and then the guiding device (7), the handling device being characterised in that it comprises an endless chain (17) stretched between two return wheels (21) (21′) each mounted so as to rotate about a horizontal shaft (19) (19′) respectively underneath each end of the storage track (16) and comprising an upper strand (17a) passing along the storage track (16) and a lower return strand (17b) and in that the flexible link 15 for raising the handling hook (30) with the dummy (12) is connected by its end opposite to the hook (30) to a coupling point (18) on the endless chain (17), the latter being associated with a drive motor (23) so that the assembly constitutes a single means for raising and for placing the dummy (12) onto the storage track (16) by rolling the flexible link along the upper strand (17a) and then along the lower strand (17b) of the chain (17) progressively as the dummy (12) is raised and as it advances on the storage track (16).
2. Handling device according to Claim 1, characterised in that the endless chain (17) is a chain with links, stretched between two toothed return wheels (21) (21′) and in that the drive motor (23) is locked in rotation on the rotation shaft (19) of one of the said wheels (21).
3. Handling device according to Claim 1, characterised in that the storage track (16) consists of two rows of rollers (16) placed on either side of the upper strand (17a) of the endless chain (17) and covering a width at least equal to that of the dummy (12), the said rollers (16) being mounted so as to rotate about horizontal axes perpendicular to the direction of the chain (17) and placed at such a level that the upper parts of the rollers (16) are tangent to a horizontal plane extending along the upper strand (17a) of the chain (17) slightly above the latter.
4. Handling device according to any of the preceding claims, characterised in that the storage track (16) opens at each end onto a pair of guiding wheels (22) (22′) placed on either side of the corresponding return wheel (21) (21′) of the endless chain (17) and mounted so as to rotate about the same rotation shaft (19) (19′).
5. Handling device according to any of the preceding claims, characterised in that the endless chain (17) is fitted with a hook (28) for retaining the dummy (12) extending transversely outwards so as to engage in a link of the dummy when the latter is placed on the support track and so as to control the movement of lowering the dummy into the ingot mould by regulating the speed of movement of the endless chain (17).
6. Handling device according to any of the preceding claims, characterised in that the means for controlling the lowering of the dummy consists of at least one pinch roller (24) bearing against the dummy (12) and driven in rotation in the direction of advance of the dummy (12) towards the ingot mould (6).
7. Handling device according to Claim 5, characterised in that the hook (28) for retaining the dummy (12) is fitted with a face for pushing the latter in the direction of advance towards the ingot mould (6) and constitutes, with the endless chain (17) and its drive motor (23), a single means for controlling and for monitoring the lowering of the dummy (12).
8. Handling device according to any of the preceding claims, characterised in that it comprises a track (27) for support of the flexible link (15) for raising the hook (30) extending horizontally underneath the lower strand (17b) of the endless chain (17) and whereon comes to rest the part of the flexible link (15) extending along the said lower strand (17b) progressively as the dummy (12) advances on the storage track (16).
9. Handling device according to Claim 8, characterised in that the support track (27) of the flexible link (15) consists of at least one row of rollers (27) extending along the entire length of the lower strand (17b), underneath the latter.
10. Handling device according to Claim 1, characterised in that the flexible link (15) for raising the handling hook (30) is a chain with links of length substantially equal to the difference in level between the endless chain (17) and the stand-by position (29) of the hook (30).
11. Handling device according to any of the preceding claims, characterised in that the endless chain (17), its drive motor (23) and the assembly of the associated members are mounted on a transfer trolley (11) movable on the casting floor between two positions, respectively for raising and for lowering the dummy for which the two return wheels (21) (21′) of the endless chain are substantially outwardly tangent, respectively, to a vertical plane for raising the handling hook (30) and to a vertical plane for lowering the dummy (12) into the ingot mould (16).
EP19890400615 1988-03-10 1989-03-03 Device for manipulating, for stocking and for introducing the dummy bar into a continnous casting installation Expired - Lifetime EP0333553B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8803128 1988-03-10
FR8803128A FR2628350B1 (en) 1988-03-10 1988-03-10 DEVICE FOR HANDLING, STORING AND INTRODUCING THE STARTING MANNEQUIN IN A CONTINUOUS CASTING SYSTEM

Publications (2)

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EP0333553A1 EP0333553A1 (en) 1989-09-20
EP0333553B1 true EP0333553B1 (en) 1992-06-24

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EP19890400615 Expired - Lifetime EP0333553B1 (en) 1988-03-10 1989-03-03 Device for manipulating, for stocking and for introducing the dummy bar into a continnous casting installation

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EP (1) EP0333553B1 (en)
BR (1) BR8901074A (en)
DE (1) DE68901877T2 (en)
FR (1) FR2628350B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010062853A1 (en) * 2010-05-15 2012-02-16 Sms Siemag Ag Method and apparatus for continuous casting of a metal strand
DE102013213650A1 (en) * 2013-07-12 2015-01-15 Siemens Vai Metals Technologies Gmbh Automatic cold strand centering on a cold extruded cart
CN115007819B (en) * 2022-06-28 2023-12-19 武汉钢铁有限公司 Full-automatic unmanned dummy ingot feeding system of slab continuous casting machine and working method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318158A1 (en) * 1973-04-11 1974-10-24 Sack Gmbh Maschf Cold-track pick-up device in continuous casting - with combined cable hoist and drive for controlled feed-rate
AT343835B (en) * 1976-03-23 1978-06-26 Voest Ag DEVICE FOR INSTALLING A FLEXIBLE STARTING LINE WITH A STARTING HEAD INTO A CONTINUOUS CASTING PLANT
AT342226B (en) * 1976-04-30 1978-03-28 Voest Ag ACCESS LINE FOR CONTINUOUS CASTING PLANTS
LU82409A1 (en) * 1980-04-28 1982-01-20 Arbed Sarl METHOD AND DEVICE FOR INPUTING AND OUTPUTING A START-UP CHAIN WHEN FORMAT CHANGING IN A CONTINUOUS CASTING SYSTEM

Also Published As

Publication number Publication date
EP0333553A1 (en) 1989-09-20
DE68901877D1 (en) 1992-07-30
FR2628350A1 (en) 1989-09-15
DE68901877T2 (en) 1993-02-04
FR2628350B1 (en) 1990-12-21
BR8901074A (en) 1989-10-24

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