EP0064227B1 - Dispositif de guidage à rouleaux, notamment pour une machine à convoyer et à redresser d'une installation de coulée continue - Google Patents

Dispositif de guidage à rouleaux, notamment pour une machine à convoyer et à redresser d'une installation de coulée continue Download PDF

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Publication number
EP0064227B1
EP0064227B1 EP82103398A EP82103398A EP0064227B1 EP 0064227 B1 EP0064227 B1 EP 0064227B1 EP 82103398 A EP82103398 A EP 82103398A EP 82103398 A EP82103398 A EP 82103398A EP 0064227 B1 EP0064227 B1 EP 0064227B1
Authority
EP
European Patent Office
Prior art keywords
strand
rollers
frame
strang
guide
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
Application number
EP82103398A
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German (de)
English (en)
Other versions
EP0064227A1 (fr
Inventor
Rudolf Ing. Grad. Hoffmann
Adolf G. Ing. Grad. Zajber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0064227A1 publication Critical patent/EP0064227A1/fr
Application granted granted Critical
Publication of EP0064227B1 publication Critical patent/EP0064227B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening strands

Definitions

  • the invention relates to a roller strand guide scaffold, in particular a transport and straightening machine following the secondary cooling section of a continuous casting installation for strands of any cross-section, in particular for pre-profiles or blooms with a relatively large cross-section and changing strand dimensions, the strand being enclosed on all sides by rollers in the straightening area, of which the lateral support and guide rollers and preferably the upper ones of the straightening and transport rollers can be adjusted in the direction of the strand and the lateral support rollers are accommodated by rockers.
  • the invention is thus based on DE-Al -2 939 321, in which reference is made to the problem with regard to the large straightening forces for strands with a relatively large cross section, taking into account the fact that such strands have not yet solidified in the area of the transport and straightening machine are. It is recommended in this publication not to drive the horizontal straightening rollers and to allow the strand to be transported by adjustable driven lateral drive or support rollers, the axial direction of which crosses that of the horizontal rollers and the relatively rigid adjustment means are supported to a limited extent.
  • the resilient support of the lateral support rollers is to be accomplished in that they are taken up by rockers.
  • the all-round roller support is known (DE-A3-1 942 782), the side support rollers are not driven and are set against a fixed dimension with a predetermined, defined force, which should be sufficient, the strand shell on the others relieve top and bottom sides.
  • the invention is directed to a roller strand guide scaffold, in particular a transport and straightening machine for a continuous casting installation for preliminary profiles or blooms with a relatively large cross-section of over 200 mm edge length for circular arc continuous casting installations. Since the strand formats change frequently with such profiles, each changeover to a different strand dimension also necessitates a change in the strand guide, including the transport and straightening machine. If only upper or inner horizontal rollers and lower or outer horizontal rollers are present, this measure presents no difficulties. As a rule, the lower or outer rollers are rigidly attached to the base frame of the continuous caster and the upper or inner rollers are moved to the new format by means of hydraulic cylinders, which are located above the strand in the roller stand.
  • the invention has for its object to develop a roller strand guide frame according to the preamble of claim 1 in such a way that with respect to multi-strand systems, a horizontally space-saving design for the adjusting means of the side support rollers and their conversion is obtained taking into account different strand formats.
  • This object is achieved according to the invention by the characterizing features of patent claim 1.
  • the swivel frames can be installed as receptacles for the support rollers and their adjusting means, which allow horizontal and, above all, vertical adjustment, without additional space requirements in the available free spaces of a multi-strand caster.
  • the support rollers lie opposite each other at a certain distance, which can then be adapted to the existing strand widths in the case of rectangular strands or to the respective key dimensions in the case of polygonal strands without further changes in the swivel position.
  • the side support rollers are free in the direction of removal.
  • a preferred embodiment of the invention provides that the swivel frames are fork-shaped and accommodate vertically movable guide frames for horizontally adjustable roller carriers inserted therein, and that springs are used in both fork arms which exert a constant force in the vertical direction against the guide frames. Accordingly, the swivel frames assume a rest position in the swiveled-in end position and the further adjustment movements are carried out with the guide frame and the roller carriers, which are adjustably inserted in the swivel frame, which in itself has only a carrying function, the guide frames, which are under spring force, being arranged so that they can slide in the swivel frame are and cause the vertical adjustment of the support rollers.
  • the guide frames protrude the furthest from the swivel frames, which are in the swung-in horizontal position with their upper frame edges below the line of the smallest strand format, while in the case of smaller strand dimensions they protrude from the lowering support beams of the straightening rollers are pressed more or less into the swivel frame against the force of the springs.
  • the horizontal position is not affected by this. Rather, separately adjustable roller carriers are used in the guide frame.
  • support roller arrangements for carrying out the different positioning movements each consisting of three nested elements, namely swivel frames, guide frames and roller carriers.
  • each fork arm has two springs, between which a pin guiding the guide frame during vertical movement is arranged.
  • the invention further provides that actuators for the horizontal adjustment of the roller carriers are mounted in the guide frame and that spacers which can be inserted into the guide frame and bear against the outer ends of the roller carrier define the strand width or the width across flats of a strand.
  • the actuators can be designed as threaded spindles which are connected to the roller carriers and can be adjusted manually by means of, for example, attachable hand cranks.
  • hydraulically actuated cylinders make the horizontal adjustment, the precise compliance with a desired strand width setting being achieved by spacers which are inserted between the roller carrier and the guide frame.
  • the bale lengths of the side support rollers held by the roller carriers are designed as a function of the largest strand dimension, which in any case provides complete support for all strand thicknesses that occur.
  • One embodiment of the invention provides that at least two support rollers are arranged vertically next to one another in the roller carriers. A large diameter support roller is thus replaced by two or more smaller diameter support rollers, which sometimes has an improved effect against the lateral bulging of a strand due to the straightening forces.
  • the invention further proposes that the supporting beams of the adjustable straightening rollers are placed on the guide frame via interchangeable pressure pieces.
  • the thrust pieces protrude from the straightening rollers and press the guide frames down after an idle stroke, such that a dimension-related adjusting stroke of the straightening rollers corresponds to half a vertical adjustment of the guide frames or the lateral support rollers. Direct contact between the straightening rollers and the swivel or guide frame is excluded.
  • the straightening and driving machine unit usually consists of a plurality of pairs of rollers which follow one another in the strand running direction and are either mounted in a common stand or in individual stands. At least one of the partially driven straightening rollers can be adjusted in order to be able to convey strands of different thicknesses, but also a starting strand that is thinner than the cast strand.
  • a cast octagonal rod 3 is guided between a driven upper straightening roll 1 and a driven lower straightening roll 2, the core of which is usually still liquid at this time.
  • the straightening rollers 1, 2 are mounted in a strand guide frame 4a, which is fastened on a base frame 5.
  • the base frame 5 is placed on foundation brackets 6 and releasably connected to them.
  • the drive power for the Richtrol len is transmitted from drives, not shown, via the drive spindles 7.
  • the lower straightening roller 2 is rigidly mounted, while the upper straightening roller 1 is supported in a supporting beam 11 and is pressed onto the strand 3 by two hydraulic cylinders 8 with a preselected pressure.
  • a lateral support roller 12 is mounted on both sides in a swivel frame 13 in the vertical axis of the straightening roller pairs 1, 2.
  • the swivel frame 13 is fork-shaped (FIG. 2) and serves as a supporting element for a guide frame 14 inserted into the swivel frame 13, which in turn receives a roller carrier 15 as the actual bearing for the support roller 12.
  • the roller carrier 15 is horizontally adjustable in order to be able to adjust the lateral support roller 12 to the exact strand dimension.
  • the horizontal adjustment which can be carried out both in the pivoted-in as well as in the pivoted-out position of the pivot frame 13, takes place via a spindle 16 which extends through the bottom of the roller carrier 15 into a cavity 17.
  • the spindle end is mounted in the guide frame 14 and a collar 18 of the spindle 16 comes to rest against an intermediate piece 21 which is supported in the guide frame 14 against a projection 20 when it rotates in the direction of the strand.
  • the guide frame 14 is closed by means of a cover secured by screws 2, through which only a square pin 24 of the spindle 16 protrudes.
  • a handwheel for spindle adjustment can be placed on the pin 24.
  • the intermediate piece 21 and the cover 23 enclose a sleeve 25 between them, which carries plate springs 26 and is slightly axially displaceable until it rests on the cover 23.
  • the bushing 25 secures the seat of the collar 18 in the intermediate piece 21.
  • the design described (FIG. 3) of the end of the guide frame 14 facing away from the support roller 12 means that the support roller 12 is always against the by the plate springs 26 without requiring additional space Strand 3 abuts, but with a force of the plate springs 26, which is smaller than the transverse force resulting from the deformation.
  • the evasive movement of the lateral support roller towards the outside is limited, so that no significant deviations in the width dimension of the strand are permitted by the retreat.
  • the opposite side support rollers are set to the strand width dimension, which in the exemplary embodiment is the width across flats SW of an octagonal strand 3, by first adjusting the roller carriers 15 to the strand.
  • a spacer 27, which precisely defines the respective strand dimension, is then inserted into the free space between the outer end of a roller carrier 15 and the intermediate piece 21, the spacer 27 engaging over the spindle 16.
  • the spindle 16 is then turned back until the roller carrier 15 lies firmly against the spacer 27.
  • the fork-shaped swivel frame 12 is pivotably mounted on a scaffold with exclusively non-driven straightening rollers 1, 2 and on the side of the driven straightening rollers 1, 2 (FIG. 1) free of drives in such a way that two narrow webs 28 from the swivel frame 12 run to the base frame 5.
  • the webs 28 are each rotatably mounted in a bracket 31 by means of a shaft 32.
  • an adjusting cylinder 34 is suspended vertically.
  • the piston rod 35 of the adjusting cylinder 34 engages two extensions 36 of the swivel frame 12, between which the piston rod 35 is secured by means of a bolt 37.
  • the swivel frames 12 are designed in these areas so that each swivel frame or its extensions 36 is articulated via articulated levers 38, 41 in a parallelogram arrangement on the extended support 40 of the lower, rigidly mounted straightening roller 12 (Fig. 1).
  • Another lever has as the adjusting lever 42 on the one hand a common bearing 43 with a parallelogram lever 41 and on the other hand is connected to the piston rod 35 of the adjusting cylinder 34.
  • the adjusting cylinder 34 is in turn suspended vertically. In this case, however, the suspension is located in a foundation base 44.
  • the entire support height S or, in the case of rectangular strands, the entire thickness of a strand is supported.
  • the symmetry transverse axes 45 of the support rollers 12 are in line with the symmetry transverse axes 46 to 46 "of strand 3 to 3". So that this is possible without a respective roll change, the guide frame 14 of a roller carrier 15 is subjected to a constant spring force, for which purpose springs 47 are inserted in each fork arm 13a of the swivel frame 13 in two pots 47a, which guide frame 14 out of the swivel frame 3 into its highest position move out.
  • Bolts 48 which are inserted between the springs 47 in the swivel frame (Fig. 3), are used to guide these adjustments.
  • the largest strand dimension 3 is supported (FIG. 1).
  • the upper straightening rollers 1 are lowered via the hydraulic cylinders 8 with their supporting beams 11 and lie down with pressure pieces 51, which are interchangeably attached to the bearing blocks 1 of the straightening rollers 1, for example in dovetail-like shoes (not shown) can be against the guide frame 14. The is pressed down accordingly and lowers with the roller carrier to its new position. Fig.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Wire Processing (AREA)
  • Metal Rolling (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Forging (AREA)

Claims (10)

1. Corset de guidage de la barre à rouleaux, en particulier extracteur-redresseur à la suite du lit de refroidissement secondaire d'une installation de coulée continue pour barres de section quelconque, en particulier pour ébauches de profilés ou pour blooms (3) avec section relativement grande et dimensions de barre variables, la barre étant, dans la zone de redressage, enfermée de tous côtés par des rouleaux (1, 2, 12), dont les rouleaux d'appui latéraux (12) et, en priorité, les rouleaux extracteurs-redresseurs supérieurs (1) sont réglables en direction de la barre et les rouleaux d'appui latéraux (12) sont repris par des bras pivotables caractérisé en ce que les bras pivotables sont conçus comme cadres pivotables (13) pour recevoir aussi bien les rouleaux d'appui latéraux (12) que leurs éléments de réglage pour le réglage horizontal (16-27) et pour un réglage vertical (14, 48, 47, 47a), que le cadre pivotable (13) est pivotable entre une position de travail horizontale et une position pivotée vers l'extérieur et qu'avec le réglage des rouleaux redresseurs (1) réglables, les rouleaux d'appui latéraux (12) se règlent automatiquement à l'épaisseur ou à la cote latérale (S) d'une nouvelle dimension de barre, de telle façon que les tables des rouleaux d'appui (12) logés verticalement soient réglées symétriquement par rapport à l'axe transversal de symétrie (46") de la cote latérale (S) de barre considérée.
2. Corset de guidage de la barre à rouleaux suivant revendication 1, caractérisé en ce que en priorité sur le côté non-entraîné des rouleaux redresseurs et extracteurs (1, 2) les cadres pivotables (13) sont pourvus de supports (28) et sont reliés au cadre de base (5) de l'extracteur-redresseur et que des vérins de réglage (34) en position verticale sortie et logés en palier oscillant, agissent sur les cadres pivotables (13).
3. Corset de guidage de la barre à rouleaux suivant revendication 1, caractérisé en ce que qu'en priorité sur le côté entraînement des rouleaux redresseurs et extracteurs (1, 2) les cadres pivotables (13) sont reliés au cadre de base (5) de l'extracteur-redresseur (4) par l'intermédiaire de leviers articulés (38,41).
4. Corset de guidage de la barre à rouleaux suivant revendication 3, caractérisé en ce que les leviers articulés mobiles (38, 41 ) sont articulés en disposition de parallélogramme et que les leviers articulés possèdent un levier de manoeuvre (42) présentant un palier comun (43) avec un levier articulé (41) sur le cadre de base (5) etaccouplé, avec son extrémité de bras libre, à un vérin hydraulique (34) en position verticale sortie.
5.Corset de guidage de la barre à rouleaux suivant revendication 1, caractérisé en ce que les cadres pivotables (13) sont conçus en forme de fourche et reçoivent des cadres de guidage (14) mobiles verticalement pour des supports de rouleaux (15) réglables horizontalement qui y sont installés et que les deux bras de fourche (13a) comportent des ressorts (47) exerçant une force continue verticale contre les cadres de guidage (14).
6. Corset de guidage de la barre à rouleaux suivant revendication 5, caractérisé en ce que chaque bras de fourche (13a) comporte deux ressorts (47) entre lesquels une cheville (48) est disposée, guidant les cadres de guidage (14) pour le mouvement vertical.
7. Corset de guidage de la barre à rouleaux suivant revendication 6, caractérisé en ce que des entraînements de réglage (16) pour le réglage horizontal des supports de rouleaux (15) sont logés dans les cadres de guidage (14) et que des pièces d'écartement (27) pouvant être placées dans les cadres de guidage (14) et s'appliquant contre les extrémités extérieures des supports de rouleaux (15), définissent la largeur de la barre ou la cote d'ouverture de clé (SW) d'une barre (3) (Fig. 4).
8. Corset de guidage de la barre à rouleaux suivant revendication 1, caractérisé en ce que les longueurs de table des rouleaux d'appui latéraux (12) supportés par les supports de rouleaux (15) sont conçues en fonction de la plus grande dimension de brame.
9. Corset de guidage de la barre à rouleaux suivant revendication 8, caractérisé en ce que dans les supports de rouleaux (15) au moins deux rouleaux d'appui (12) sont disposés verticalement l'un à côté de l'autre.
10. Corset de guidage de la barre à rouleaux suivant revendications 1, 5 et 6, caractérisé en ce que les poutres porteuses (11) des rouleaux redresseurs (1) réglables s'appliquent contre les cadres de guidage (14) par l'intermédiaire de pièces de serrage (51) échangeables.
EP82103398A 1981-05-02 1982-04-22 Dispositif de guidage à rouleaux, notamment pour une machine à convoyer et à redresser d'une installation de coulée continue Expired EP0064227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3117500 1981-05-02
DE3117500A DE3117500C2 (de) 1981-05-02 1981-05-02 Transport- und Richtmaschine einer Stranggießanlage

Publications (2)

Publication Number Publication Date
EP0064227A1 EP0064227A1 (fr) 1982-11-10
EP0064227B1 true EP0064227B1 (fr) 1985-06-19

Family

ID=6131366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103398A Expired EP0064227B1 (fr) 1981-05-02 1982-04-22 Dispositif de guidage à rouleaux, notamment pour une machine à convoyer et à redresser d'une installation de coulée continue

Country Status (7)

Country Link
US (1) US4488591A (fr)
EP (1) EP0064227B1 (fr)
JP (1) JPS57187152A (fr)
AU (1) AU552047B2 (fr)
CA (1) CA1185763A (fr)
DE (1) DE3117500C2 (fr)
ZA (1) ZA822816B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905754A (en) * 1989-02-28 1990-03-06 Sumitec, Inc. Footroll assembly for a continuous casting apparatus
US5850871A (en) * 1996-04-04 1998-12-22 Ag Industries, Inc. Foot guide and control system for continuous casting machine
SI1897636T1 (sl) * 2006-09-04 2009-12-31 Concast Ag Naprava za kontinuirano litje in postopek za kontinuirano litje
MX2010005518A (es) * 2008-01-14 2010-06-18 Sms Concast Ag Sistema de fundicion continua, particularmente para productos de acero largos y metodo para fundicion continua.
AT506846B1 (de) * 2008-05-23 2011-08-15 Siemens Vai Metals Tech Gmbh Strangführungssegment
CN115178718B (zh) * 2022-07-08 2024-04-05 福建田中机械科技股份有限公司 方坯连铸生产线及其生产工艺

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538980A (en) * 1968-02-27 1970-11-10 United States Steel Corp Roller cage for confining continuous casting as it emerges from mold
CH495800A (de) * 1969-05-20 1970-09-15 Concast Ag Auszieh- und Richtvorrichtung für Stranggiezzanlagen mit gekrümmter Strangführung
BE787511A (fr) * 1971-08-16 1973-02-12 Uss Eng & Consult Procede et appareil pour redresser des pieces coulees en continu
JPS566557B2 (fr) * 1973-03-07 1981-02-12
JPS566556B2 (fr) * 1975-03-22 1981-02-12
JPS5341122U (fr) * 1976-09-10 1978-04-10
JPS5652742Y2 (fr) * 1977-08-16 1981-12-09
AT359669B (de) * 1978-06-14 1980-11-25 Voest Alpine Ag Fuehrungsgeruest fuer stranggiessanlagen
IT1106747B (it) * 1978-12-28 1985-11-18 Continua Int Macchina per il raddrizzamento ed il tiro della barra in impianti per colata contunua di acciaio con uscita della barra in orizzontale
JPS564361A (en) * 1979-06-22 1981-01-17 Nippon Steel Corp Method and device for continuous casting
DE2939321A1 (de) * 1979-09-28 1981-04-16 Sack GmbH, 4000 Düsseldorf Treib- und richtrollenanordnung

Also Published As

Publication number Publication date
CA1185763A (fr) 1985-04-23
DE3117500A1 (de) 1983-01-20
DE3117500C2 (de) 1986-04-10
ZA822816B (en) 1983-02-23
US4488591A (en) 1984-12-18
AU8315282A (en) 1982-11-11
EP0064227A1 (fr) 1982-11-10
JPS57187152A (en) 1982-11-17
AU552047B2 (en) 1986-05-22

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