EP1572386A1 - Rolling mill comprising means for exchanging the rolls - Google Patents

Rolling mill comprising means for exchanging the rolls

Info

Publication number
EP1572386A1
EP1572386A1 EP03776907A EP03776907A EP1572386A1 EP 1572386 A1 EP1572386 A1 EP 1572386A1 EP 03776907 A EP03776907 A EP 03776907A EP 03776907 A EP03776907 A EP 03776907A EP 1572386 A1 EP1572386 A1 EP 1572386A1
Authority
EP
European Patent Office
Prior art keywords
support
support plates
rolling mill
area
pits
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.)
Granted
Application number
EP03776907A
Other languages
German (de)
French (fr)
Other versions
EP1572386B1 (en
Inventor
Frank-Günter BENNER
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1572386A1 publication Critical patent/EP1572386A1/en
Application granted granted Critical
Publication of EP1572386B1 publication Critical patent/EP1572386B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts

Definitions

  • Rolling mill with means for changing rolls
  • the invention relates to a rolling mill with a plurality of roll stands and with support plates provided on the operating side of the stands and displaceable transversely to the roll axes, which are equipped to accommodate work roll sets and which adjoin the hallway.
  • the stands are preceded by pits on the operating side, the bottom of which is equipped for extending roller sets.
  • Rolling mills are known with pits that are of displaceable, i.e. support plates which can be displaced in the rolling direction or against the rolling direction are overlapped.
  • They are moved out of the roll stands by changing cylinders and placed on pairs of rails on the support plates.
  • the roll changing cylinders can then move the new work roll sets into the stands.
  • Tractors can take over the used sets of work rolls, if necessary after shifting the support plates again, and move them to the roll workshop.
  • the support plates are lifted and stacked by means of cranes for the backup roller change, in which the backup roller sets are moved into the pits. This requires considerable time.
  • DE 43 21 663 A1 proposes to provide the pits which are arranged between the rolling stands and the cross-displaceable support plate line with pivotable flaps. These flaps are in a horizontal position for changing the work roll, while they release the pit for retracting the support roll sets by a folding movement for changing the support roll.
  • this known rolling mill with over Pits that can be closed by flaps between the scaffolding line and the support plate line, the work rolls must be moved over the flaps to the support plates. The transverse shifting and the exchange of the work rolls only take place on the support plates. The travel path is therefore relatively long and correspondingly time-consuming.
  • the invention has for its object to provide a rolling mill in which both the work roll change and the backup roll change can be achieved within a short time sequence, in which the change can be made more efficient and thus the production time of the system can be increased can.
  • the essence of the invention is that the support plates, which cover the pits directly next to the roll stands and take over the transverse displacement for the work roll change, also for the change of the support roll individually for a specific stand or completely for the entire rolling mill from the pit and thus the stand area, partially or completely are movable.
  • the individual support plates are releasably connected to one another, so that either the entire support plate line or the support platform or only individual packages of support plates can be moved.
  • individual stands of a multi-stand system can be equipped with new backup rolls more quickly.
  • the used or new work rolls can remain on the support plates in the position to change the support rolls. This additional changeover time is therefore also eliminated with each backup roll change.
  • the traversing area required for moving the support plate line is embedded in the hallway. It can also be covered with a cover which forms the hallway, so that the traversing area is available for other functions, for example as a parking area.
  • a very advantageous bolt-wedge connection is proposed as a coupling of the individual plates, which can be opened and locked in particular with a special tool, which is described below.
  • FIG. 1 shows a side view of a rolling mill with rolling stands and a support plate line arranged directly parallel to it with a travel area for the support plates in the fully extended state of the support plate line or support platform;
  • Fig. 2 is a top view of the rolling mill of Fig. 1;
  • Fig. 3 is a sectional view through the rolling mill; 4 shows the top view of the rolling mill according to FIG. 1 with the support plate line only partially extended;
  • FIG. 5 shows the sectional view F-F of FIG. 1 to illustrate the arrangement of the rollers according to a first embodiment of the travel range
  • Fig. 6 is a sectional view F-F showing the arrangement of the rollers according to a second embodiment of the travel range
  • FIG. 7 shows a side view of a second embodiment of the rolling mill with a travel area for the support plate line below the hut floor in the extended state; 8 shows a side view of the rolling mill with a detailed representation of the substructure of the support plates;
  • FIG. 9 shows the top view of the rolling mill according to FIG. 8.
  • Fig. 10 is the sectional view F-F of Fig. 8;
  • FIG. 11 shows the sectional view GG of FIG. 10 12 shows a cross section of a connection of two abutting support plates with a bolt-wedge connection with a wedge drawing tool;
  • FIG. 13 is a sectional view of FIG. 12 with the wedge drawing tool not yet placed;
  • FIG. 1 shows a side view of a rolling mill 1 with here six rolling stands (F1-F6) which are arranged firmly anchored on a foundation 2.
  • the direction of rolling WR is marked with the arrow.
  • a pair of scissors 3 and a scale washer 4 can be arranged in front of the rolling mill 1.
  • a support plate line 6 composed of individual support plates 7 is arranged on the operating side (BS) of the rolling mill and immediately adjacent and parallel to the stand area 5, which is formed by the individual roll stands arranged one behind the other, as is illustrated in FIG. 2.
  • the support platform, ie the entirety of all support plates 7, consists of one support plate 7 per roll stand F1-F6.
  • These support plates 7 are arranged for work roll change above pits 8, which are located below the hut floor 9 (see FIG. 3).
  • the run-out area 10 for the rolling stock extends, viewed in the rolling direction WR.
  • a travel area 11 for the support plates 7 extends.
  • This travel area 11, which is designed as a roller conveyor, is designed to be so long that all support plates 7 of the support plate line 6 in their entirety from the scaffolding area 5 can be moved parallel to the outlet area 10 and thus all pits 8 can be released for changing the support rollers 12.
  • This extended state of the support platform is shown in FIGS. 1 and 2. The entire traversed support platform is identified by 6 ' .
  • the work roll change or backup roll change with cross-slide support plates 7 and pits 8 will be explained with reference to FIG. 3.
  • a roll stand Fi arranged on a foundation 2
  • the extension movement is achieved by means of an extension cylinder unit 15.
  • the respective pits 8 are covered with the support plates 7, which are provided with corresponding pairs of rails for extending and retracting the work roll sets 14, as an extension to the hut floor 9. Tractors (not shown) drag the used work rolls 14 ' onto the support plates 7 and, if necessary, back into the roll workshop.
  • the transverse displacement of the support plates 7 for changing the work roll is accomplished by means of a hydraulic cylinder 16 (cf. FIG. 2). If a backup roll change is pending, the support plates 7 are moved out via the pits 8 transversely to the roll axes into the travel area 11. The pits 8 are then available for retracting the support roller sets 12 or for changing the support rollers.
  • all support plates 7 in their entirety or only sub-groups 17 or sub-packages of support plates can be moved to open the pit 8 of a desired individual roll stand, which is shown in FIG. 4.
  • the support plates arranged behind it in the rolling direction together with the support plate which is assigned to the fourth roll stand, are moved as a package 17 by the distance from a support plate in the direction of the rolling direction WR.
  • the support roller set 12 of the fourth rolling stand F4 can then be moved into the now open pit 8 and replaced.
  • the travel area 11 for the travel support plates 7 is arranged above the steel hall 18 behind the rolling mill stand.
  • the hut hallway 18 in the outlet area is arranged in a lowered manner in relation to the hut hallway 9 in the scaffolding area - about 350 mm.
  • Fig. 5 illustrates the arrangement of the support rollers 19 of the roller conveyor for conveying the support plates 7 in the travel area 11.
  • the support rollers 19 are in lowered tracks 20 embedded in the foundation 2.
  • a relatively flat surface 21 is created which can be run over by vehicles such as a truck or a mobile crane. Overall, the support platform is moved over these support roller tracks 20 or over the hut hallway 18.
  • the support rollers can preferably be provided with a guide collar 22 on both sides.
  • the travel area 11 can be run over by vehicles, but it must always be kept clear in order to enable the pits to be opened.
  • the hut floor 23 in the travel area 11 is increased in relation to the hut hallway 9 in the scaffolding area, the support plates 7 running over the support rollers 19 below the hut floor 23 along the support roller tracks 24 then open between the rollers 19 (see Fig. 6). 7 shows that the support roller tracks 24 themselves are provided with a cover 25, so that the support plates 7 or the support platform can be moved under the cover 25. In this way it is achieved that the cover level and thus the hut floor 23 above the travel level can be used for other purposes.
  • FIGS. 8 and 9 the substructure in the pit area 8 for the manufacture of roller conveyors is illustrated.
  • three castors 26 are fastened to the foundation 2 via bearing blocks 27, the bearing blocks 27 being located between the individual roll stands Fi.
  • a pinion gear 28 which is driven by an electric motor 30 via a gear 29 (see FIGS. 2, 10 and 11).
  • the drive is composed, for example, of a direct current motor, a spur gear, an electromagnetic tooth clutch and a shaft that drive the rack and pinion gear 28.
  • the drive rack pinion 28 engages in a drive gear toothing 31 on the underside 32 of the individual support plates 7. So that the support plates 7 do not tilt during the movement Side guide rollers 33, which roll along the side surfaces of the plates 7, are provided, which are also arranged on bearing blocks 34.
  • the support plates 7 In order to enable a movement of the support plates 7 as a complete package or as a support platform or as a subpackage, they must be releasably connectable to one another.
  • the abutting plate ends 35, 36 are coupled by means of a particularly advantageous bolt-wedge connection, as is illustrated in FIG. 12.
  • flanges 37, 38 are welded to the undersides of the plates, each of which has a bore for receiving a common bolt 39.
  • the bolt 39 which extends along the end regions 35, 36 of the plates, is guided through the flange 37 of the one plate and fastened with the aid of a holding plate 40 by means of screws 41, 42 and projects beyond the plate end 35.
  • a wedge pulling tool 50 is provided, as is also illustrated in FIG. 13.
  • This wedge-pulling tool 50 is composed of a hook 52 rotatably mounted on a rod 51 or lever and two pull-off rollers 53, 54 arranged below the pivot bearing.
  • the moving rollers 53, 54 which come to rest on the plate 7, ensure a large lever arm and a defined pull-out point for the wedge 48.

Abstract

The invention relates to a rolling mill (1) comprising several rolling frames (Fi) and support plates (7) that are provided on the operator side (BS) of the frames (Fi) and can be displaced transversally to the roll axes, said plates being equipped to receive sets of working rolls (14) and lying adjacent to the mill floor (9). The mill also comprises pits (8) that are situated on the operator side (BS) upstream of each frame (Fi), the bottom of said pits being configured to deploy sets of support rolls (12). The aim of the invention is to reduce the time required to exchange the rolls. To achieve this: the support plates (7) are arranged in a support plate line (6), directly adjacent to the rolling frames (Fi) and covering the pits (8); the support plates (7) are detachably interconnected and in order to exchange the set of support rolls (12), the support plate line (6) can be displaced out of the frame area (5) transversally to the roll axes along the line of the pits, in subgroups (17) of interconnected support plates or in its entirety (6 ), in order to open at least one and if required all pits (8).

Description

Walzwerk mit Mitteln zum Wechsel von WalzenRolling mill with means for changing rolls
Die Erfindung betrifft ein Walzwerk mit mehreren Walzgerüsten und mit auf der Bedienseite der Gerüste vorgesehenen und quer zu den Walzenachsen verschiebbaren Supportplatten, die zur Aufnahme von Arbeitswalzensätzen ausgestattet sind und die an den Hüttenflur angrenzen. Den Gerüsten sind jeweils auf der Bedienseite Gruben vorgeordnet, deren Grund zum Ausfahren für Stützwalzensätze ausgestattet ist.The invention relates to a rolling mill with a plurality of roll stands and with support plates provided on the operating side of the stands and displaceable transversely to the roll axes, which are equipped to accommodate work roll sets and which adjoin the hallway. The stands are preceded by pits on the operating side, the bottom of which is equipped for extending roller sets.
Es sind Walzwerke bekannt mit Gruben, die von querverschiebbaren, d.h. in Walzrichtung bzw. entgegen der Walzrichtung verschiebbaren, Supportplatten übergriffen werden. Für den Wechsel der Arbeitswalzen werden diese von Wechseizylindern aus den Walzgerüsten ausgefahren und auf Schienenpaaren der Supportplatten abgestellt. Durch Querverschieben der Supportplatten wird je ein neuer auf einem parallelen Schienenpaar jeder Supportplatte abgestellte Arbeitswalzensatz vor die Walzgerüste geschoben. Die Walzenwechselzylinder können dann die neuen Arbeitswalzensätze in die Gerüste einfahren. Zugma- schinen können die verbrauchten Arbeitswalzensätze, ggfs. nach nochmaligem Querverschieben der Supportplatten, übernehmen und in die Walzenwerkstatt verfahren. Für den Stützwalzenwechsel, bei dem die Stützwalzensätze in die Gruben verschoben werden, werden die Supportplatten mittels Kranen abgehoben und gestapelt. Hierzu ist erhebliche Zeit notwendig.Rolling mills are known with pits that are of displaceable, i.e. support plates which can be displaced in the rolling direction or against the rolling direction are overlapped. To change the work rolls, they are moved out of the roll stands by changing cylinders and placed on pairs of rails on the support plates. By sliding the support plates across, a new set of work rolls placed on a parallel pair of rails of each support plate is pushed in front of the roll stands. The roll changing cylinders can then move the new work roll sets into the stands. Tractors can take over the used sets of work rolls, if necessary after shifting the support plates again, and move them to the roll workshop. The support plates are lifted and stacked by means of cranes for the backup roller change, in which the backup roller sets are moved into the pits. This requires considerable time.
Um dieses Problem zu lösen, schlägt die DE 43 21 663 A1 vor, die Gruben, die zwischen den Walz-Gerüsten und der querverschiebbaren Supportplattenlinie angeordnet sind, mit schwenkbaren Klappen zu versehen. Diese Klappen befinden sich zum Arbeitswalzenwechsel in horizontaler Position, während sie zum Stützwalzenwechsel durch eine Klappbewegung die Grube zum Einfahren der Stützwalzensätze frei geben. Bei diesem bekannten Walzwerk mit über Klappen verschließbaren Gruben zwischen der Gerüstlinie und der Supportplattenlinie müssen die Arbeitswalzen jeweils über die Klappen bis auf die Supportplatten verfahren werden. Erst auf den Supportplatten findet die Querverschiebung und der Tausch der Arbeitswalzen statt. Der Verfahrweg ist daher relativ lang und entsprechend zeitaufwendig.In order to solve this problem, DE 43 21 663 A1 proposes to provide the pits which are arranged between the rolling stands and the cross-displaceable support plate line with pivotable flaps. These flaps are in a horizontal position for changing the work roll, while they release the pit for retracting the support roll sets by a folding movement for changing the support roll. In this known rolling mill with over Pits that can be closed by flaps between the scaffolding line and the support plate line, the work rolls must be moved over the flaps to the support plates. The transverse shifting and the exchange of the work rolls only take place on the support plates. The travel path is therefore relatively long and correspondingly time-consuming.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Walzwerk zu schaffen, bei dem sowohl der Arbeitswalzenwechsel als auch der Stützwalzenwechsel innerhalb einer kurzen Zeitsequenz erreicht werden kann, bei dem der Wechsel effizienter gestaltet werden und somit die Produktionszeit der Anlage erhöht werden kann.Based on this prior art, the invention has for its object to provide a rolling mill in which both the work roll change and the backup roll change can be achieved within a short time sequence, in which the change can be made more efficient and thus the production time of the system can be increased can.
Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterentwicklungen sind in den Unteransprüchen beschrieben.This object is achieved by a device with the features of claim 1. Advantageous further developments are described in the subclaims.
Der Kern der Erfindung liegt darin, dass die Supportplatten, die unmittelbar neben den Walzgerüsten die Gruben bedecken und die Querverschiebung zum Arbeitswalzenwechsel übernehmen, auch zum Stützwalzenwechsel individuell für ein bestimmtes Gerüst oder komplett für die gesamte Walzstraße aus dem Gruben- und damit Gerüstbereich teilweise oder vollständig verfahrbar sind. Hierzu sind die einzelnen Supportplatten lösbar miteinander verbunden, so dass wahlweise die gesamte Supportplattenlinie bzw. die Supportplattform oder nur einzelne Pakete von Supportplatten verfahrbar sind. Damit können insbesondere auch Einzelgerüste einer mehrgerüstigen Anlage schneller mit neuen Stützwalzen ausgestattet werden. Zudem können in der Stellung zum Stützwalzenwechsel die verbrauchten bzw. neuen Arbeitswalzen auf den Supportplatten stehen bleiben. Somit entfällt auch diese zusätzliche Wechselzeit bei jedem Stützwalzen Wechsel.The essence of the invention is that the support plates, which cover the pits directly next to the roll stands and take over the transverse displacement for the work roll change, also for the change of the support roll individually for a specific stand or completely for the entire rolling mill from the pit and thus the stand area, partially or completely are movable. For this purpose, the individual support plates are releasably connected to one another, so that either the entire support plate line or the support platform or only individual packages of support plates can be moved. This means that individual stands of a multi-stand system can be equipped with new backup rolls more quickly. In addition, the used or new work rolls can remain on the support plates in the position to change the support rolls. This additional changeover time is therefore also eliminated with each backup roll change.
Der für das Verfahren der Supportplattenlinie notwendige Verfahrbereich ist in den Hüttenflur eingelassen. Er kann auch mit einer Abdeckung bedeckt sein, die den Hüttenflur bildet, so dass der Verfahrbereich für andere Funktionen, beispielsweise als Absteilfläche, zur Verfügung steht.The traversing area required for moving the support plate line is embedded in the hallway. It can also be covered with a cover which forms the hallway, so that the traversing area is available for other functions, for example as a parking area.
Als Kopplung der einzelnen Platten wird eine sehr vorteilhafte Bolzen-Keil- Verbindung vorgeschlagen, die insbesondere mit einem speziellen Werkzeug, das nachfolgend beschrieben wird, geöffnet und verriegelt werden kann.A very advantageous bolt-wedge connection is proposed as a coupling of the individual plates, which can be opened and locked in particular with a special tool, which is described below.
Die Erfindung wird anhand einer Zeichnung näher erläutert: Es zeigen:The invention is explained in more detail with reference to a drawing:
Fig. 1 eine Seitenansicht eines Walzwerkes mit Walzgerüsten und einer hierzu unmittelbar parallel angeordneten Supportplattenlinie mit einem Verfahrbereich für die Supportplatten im vollständig ausgefahrenen Zustand der Supportplattenlinie bzw. Supportplattform;1 shows a side view of a rolling mill with rolling stands and a support plate line arranged directly parallel to it with a travel area for the support plates in the fully extended state of the support plate line or support platform;
Fig. 2 die Draufsicht auf das Walzwerk nach Fig. 1 ;Fig. 2 is a top view of the rolling mill of Fig. 1;
Fig. 3 eine Schnittansicht durch das Walzwerk; Fig. 4 die Draufsicht auf das Walzwerk nach Fig. 1 mit nur teilweise ausgefahrener Supportplattenlinie;Fig. 3 is a sectional view through the rolling mill; 4 shows the top view of the rolling mill according to FIG. 1 with the support plate line only partially extended;
Fig. 5 die Schnittansicht F-F der Fig. 1 zur Darstellung der Anordnung der Laufrollen nach einer ersten Ausführungsform des Verfahrbe- reichs; Fig. 6 eine Schnittansicht F-F zur Darstellung der Anordnung der Laufrollen nach einer zweiten Ausführungsform des Verfahrbereichs;5 shows the sectional view F-F of FIG. 1 to illustrate the arrangement of the rollers according to a first embodiment of the travel range; Fig. 6 is a sectional view F-F showing the arrangement of the rollers according to a second embodiment of the travel range;
Fig. 7 eine Seitenansicht auf eine zweite Ausführungsform des Walzwerks mit einem Verfahrbereich für die Supportplattenlinie unterhalb des Hüttenflurs im ausgefahrenen Zustand; Fig. 8 eine Seitenansicht auf das Walzwerk unter detaillierter Darstellung der Unterbaus der Supportplatten;7 shows a side view of a second embodiment of the rolling mill with a travel area for the support plate line below the hut floor in the extended state; 8 shows a side view of the rolling mill with a detailed representation of the substructure of the support plates;
Fig. 9 die Draufsicht des Walzwerks nach Fig. 8;9 shows the top view of the rolling mill according to FIG. 8;
Fig. 10 die Schnittansicht F-F der Fig. 8;Fig. 10 is the sectional view F-F of Fig. 8;
Fig. 11 die Schnittansicht G-G der Fig. 10 Fig. 12 einen Querschnitt einer Verbindung von zwei aneinander stoßenden Supportplatten mit einer Bolzen-Keil-Verbindung mit einem Keilziehwerkzeug;11 shows the sectional view GG of FIG. 10 12 shows a cross section of a connection of two abutting support plates with a bolt-wedge connection with a wedge drawing tool;
Fig. 13 eine Schnittansicht der Fig. 12 mit noch nicht plaziertem Keilziehwerkzeug;FIG. 13 is a sectional view of FIG. 12 with the wedge drawing tool not yet placed;
Fig. 1 zeigt in der Seitenansicht ein Walzwerk 1 mit hier sechs Walzgerüsten (F1-F6), die auf einem Fundament 2 fest verankert angeordnet sind. Die Walzrichtung WR ist mit dem Pfeil gekennzeichnet. Vor dem Walzwerk 1 können eine Schere 3 sowie ein Zunderwäscher 4 angeordnet sein. Auf der Bedienseite (BS) des Walzwerkes und unmittelbar benachbart und parallel zum Gerüstbereich 5, der durch die einzelnen hintereinander angeordneten Walzgerüste gebildet wird, ist eine Supportplattenlinie 6 aus einzelnen Supportplatten 7 angeordnet, wie aus Fig. 2 verdeutlicht wird. Die Supportplattform, d.h. die Gesamtheit aller Supportplatten 7, besteht aus je einer Supportplatte 7 pro Walzgerüst F1-F6. Diese Supportplatten 7 sind zum Arbeitswalzenwechsel oberhalb von Gruben 8, die sich unterhalb des Hüttenflurs 9 (vgl. Fig.3) befinden, angeordnet. Im Anschluss an den Gerüstbereich 5 erstreckt sich, in Walzrichtung WR gesehen, der Auslaufbereich 10 für das Walzgut. Parallel zu diesem Auslaufbereich 10 erstreckt sich in Fortführung zur Grubenlinie ein Verfahrbereich 11 für die Supportplatten 7. Dieser Verfahrbereich 11 , der als Rollenbahn ausgebildet ist, ist von seiner Erstreckung so lang ausgelegt, dass alle Supportplatten 7 der Supportplattenlinie 6 in ihrer Gesamtheit aus dem Gerüstbereich 5 parallel zum Auslaufbereich 10 verfahren werden und somit alle Gruben 8 zum Wechsel der Stützwalzen 12 freigegeben werden können. Dieser ausgefahrene Zustand der Supportplattform in den Fig. 1 und 2 gezeigt. Mit 6' ist die gesamte verfahrene Supportplattform gekennzeichnet.1 shows a side view of a rolling mill 1 with here six rolling stands (F1-F6) which are arranged firmly anchored on a foundation 2. The direction of rolling WR is marked with the arrow. A pair of scissors 3 and a scale washer 4 can be arranged in front of the rolling mill 1. A support plate line 6 composed of individual support plates 7 is arranged on the operating side (BS) of the rolling mill and immediately adjacent and parallel to the stand area 5, which is formed by the individual roll stands arranged one behind the other, as is illustrated in FIG. 2. The support platform, ie the entirety of all support plates 7, consists of one support plate 7 per roll stand F1-F6. These support plates 7 are arranged for work roll change above pits 8, which are located below the hut floor 9 (see FIG. 3). Following the stand area 5, the run-out area 10 for the rolling stock extends, viewed in the rolling direction WR. Parallel to this run-out area 10, in continuation of the pit line, a travel area 11 for the support plates 7 extends. This travel area 11, which is designed as a roller conveyor, is designed to be so long that all support plates 7 of the support plate line 6 in their entirety from the scaffolding area 5 can be moved parallel to the outlet area 10 and thus all pits 8 can be released for changing the support rollers 12. This extended state of the support platform is shown in FIGS. 1 and 2. The entire traversed support platform is identified by 6 ' .
Der Arbeitswalzenwechsel bzw. Stützwalzenwechsel mit querverschiebbaren Supportplatten 7 sowie Gruben 8 soll anhand der Fig. 3 erläutert werden. Neben einem auf einem Fundament 2 angeordneten Walzgerüst Fi befindet sich eine Grube 8, auf deren Grund Ausfahrschienen 13 für die Stützwalzensätze 12 angeordnet sind. Die Ausfahrbewegung wird mittels einer Ausfahr- Zylinder-Einheit 15 erreicht. Zum Arbeitswalzenwechsel sind die jeweiligen Gruben 8 in Verlängerung zum Hüttenflur 9 mit den Supportplatten 7 bedeckt, die mit entsprechenden Schienenpaaren zum Aus- und Einfahren der Arbeitswalzensätze 14 versehen sind. Zugmaschinen (nicht gezeigt) schleppen die verbrauchten Arbeitswalzen 14' auf die Supportplatten 7 und ggfs. zurück in die Walzenwerkstatt. Die Querverschiebung der Supportplatten 7 zum Arbeitswalzenwechsel wird mittels eines Hydraulik-Zylinders 16 (vgl. Fig. 2) bewerkstelligt. Wenn ein Stützwalzenwechsel ansteht, werden die Supportplatten 7 über die Gruben 8 quer zu den Walzenachsen in den Verfahrbereich 11 herausgefahren. Die Gruben 8 stehen anschließend zum Einfahren der Stützwalzensätze 12 bzw. zum Wechsel der Stützwalzen zur Verfügung.The work roll change or backup roll change with cross-slide support plates 7 and pits 8 will be explained with reference to FIG. 3. In addition to a roll stand Fi arranged on a foundation 2, there is a pit 8, on the base of which extension rails 13 for the support roll sets 12 are arranged. The extension movement is achieved by means of an extension cylinder unit 15. To change the work roll, the respective pits 8 are covered with the support plates 7, which are provided with corresponding pairs of rails for extending and retracting the work roll sets 14, as an extension to the hut floor 9. Tractors (not shown) drag the used work rolls 14 ' onto the support plates 7 and, if necessary, back into the roll workshop. The transverse displacement of the support plates 7 for changing the work roll is accomplished by means of a hydraulic cylinder 16 (cf. FIG. 2). If a backup roll change is pending, the support plates 7 are moved out via the pits 8 transversely to the roll axes into the travel area 11. The pits 8 are then available for retracting the support roller sets 12 or for changing the support rollers.
Erfindungsgemäß können alle Supportplatten 7 in ihrer Gesamtheit oder nur Untergruppen 17 bzw. Unterpakete von Supportplatten zum Öffnen der Grube 8 eines gewünschten individuellen Walzgerüstes verschoben werden, was mit Fig. 4 gezeigt wird. Zum Öffnen der Grube 8 des - hier beispielhaft gezeigten - vierten Walzgerüstes F4 werden die in Walzrichtung dahinter angeordneten Supportplatten nebst der Supportplatte, die dem vierten Walzgerüst zugeordnet ist, als Paket 17 jeweils um die Strecke von einer Supportplatte in Richtung der Walzrichtung WR verfahren. Anschließend kann der Stützwalzensatz 12 des vierten Walzgerüstes F4 in die nun geöffnete Grube 8 eingefahren und gewechselt werden.According to the invention, all support plates 7 in their entirety or only sub-groups 17 or sub-packages of support plates can be moved to open the pit 8 of a desired individual roll stand, which is shown in FIG. 4. To open the pit 8 of the fourth roll stand F4 - shown here by way of example - the support plates arranged behind it in the rolling direction, together with the support plate which is assigned to the fourth roll stand, are moved as a package 17 by the distance from a support plate in the direction of the rolling direction WR. The support roller set 12 of the fourth rolling stand F4 can then be moved into the now open pit 8 and replaced.
Bei der bisher behandelten Ausführungsform ist der Verfahrbereich 11 für die verfahrenen Supportplatten 7 oberhalb des Hüttenflurs 18 hinter der Walzgerüststraße angeordnet. Der Hüttenflur 18 im Auslaufbereich ist im Verhältnis zum Hüttenflur 9 im Gerüstbereich - etwa um 350 mm - abgesenkt angeordnet. Fig. 5 verdeutlicht hierbei die Anordnung der Tragrollen 19 der Rollenbahn zur Förderung der Supportplatten 7 im Verfahrbereich 11. Die Tragrollen 19 sind in abgesenkten Bahnen 20 im Fundament 2 eingelassen. Trotz der Tragrollen- Bahnen 20 entsteht eine relativ ebene Oberfläche 21 , die mit Fahrzeugen, wie zum Beispiel einem LKW oder einem Mobilkran, überfahren werden können. Insgesamt wird die Supportplattform über diese Tragrollen-Bahnen 20 bzw. über den Hüttenflur 18 verfahren. Die Tragrollen können vorzugsweise mit ei- nem beidseitigen Führungsbund 22 versehen sein. Bei dieser Variante mit abgesenktem Hüttenflur 18 kann der Verfahrbereich 11 zwar von Fahrzeugen überfahren, er muss aber stets freigehalten werden, um ein Öffnen der Gruben zu ermöglichen. Um dies zu umgehen, ist bei einer anderen Ausführungsform der Hüttenflur 23 im Verfahrbereich 11 im Verhältnis zum Hüttenflur 9 im Gerüstbereich erhöht, wobei die Supportplatten 7 über die Tragrollen 19 unterhalb des Hüttenflurs 23 entlang der dann zwischen den Rollen 19 offenen Tragrollen-Bahnen 24 verlaufen (vgl. Fig. 6). Fig. 7 zeigt, dass die Tragrollen-Bahnen 24 selbst mit einer Abdeckung 25 versehen sind, so dass die Supportplatten 7 bzw. die Supportplattform unter die Abdeckung 25 verfahren werden können. Auf diese Weise wird erreicht, dass die Abdeckungsebene und somit der Hüttenflur 23 oberhalb der Verfahrebene für andere Zwecke genutzt werden können.In the embodiment discussed so far, the travel area 11 for the travel support plates 7 is arranged above the steel hall 18 behind the rolling mill stand. The hut hallway 18 in the outlet area is arranged in a lowered manner in relation to the hut hallway 9 in the scaffolding area - about 350 mm. Fig. 5 illustrates the arrangement of the support rollers 19 of the roller conveyor for conveying the support plates 7 in the travel area 11. The support rollers 19 are in lowered tracks 20 embedded in the foundation 2. Despite the idler tracks 20, a relatively flat surface 21 is created which can be run over by vehicles such as a truck or a mobile crane. Overall, the support platform is moved over these support roller tracks 20 or over the hut hallway 18. The support rollers can preferably be provided with a guide collar 22 on both sides. In this variant with a lowered hut floor 18, the travel area 11 can be run over by vehicles, but it must always be kept clear in order to enable the pits to be opened. To avoid this, in another embodiment, the hut floor 23 in the travel area 11 is increased in relation to the hut hallway 9 in the scaffolding area, the support plates 7 running over the support rollers 19 below the hut floor 23 along the support roller tracks 24 then open between the rollers 19 (see Fig. 6). 7 shows that the support roller tracks 24 themselves are provided with a cover 25, so that the support plates 7 or the support platform can be moved under the cover 25. In this way it is achieved that the cover level and thus the hut floor 23 above the travel level can be used for other purposes.
Mit Hilfe der Fig. 8 und 9 wird der Unterbau im Grubenbereich 8 zur Bewerk- stelligung von Rollenbahnen verdeutlicht. Entlang der Grubenwände, die sich parallel zur Walzenachse erstrecken, sind bei dem gezeigten Beispiel jeweils drei Laufrollen 26 über Lagerböcke 27 auf dem Fundament 2 befestigt, wobei sich die Lagerböcke 27 zwischen den einzelnen Walzgerüsten Fi befinden. Im Übergang vom Gerüst- (5) zum Verfahrbereich 11 befindet sich als vorteilhaftes Beispiel eines möglichen Antriebs ein Triebstockritzel 28, das über ein Getriebe 29 von einem Elektromotor 30 angetrieben wird (vgl. Fig. 2, 10 und 11). Der Antrieb setzt sich beispielsweise aus einem Gleichstrommotor, einem Stirnradgetriebe, einer Elektromagnet-Zahnkupplung und einer Welle zusammen, die das Triebstockritzel 28 antreiben. Das Triebstockritzel 28 greift in eine Trieb- Stockverzahnung 31 an der Unterseite 32 der einzelnen Supportplatten 7 ein. Damit sich die Supportplatten 7 bei der Verfahrbewegung nicht verkanten, sind Seitenführungsrollen 33, die entlang der Seitenflächen der Platten 7 abrollen, vorgesehen, die ebenfalls auf Lagerböcken 34 angeordnet sind.With the help of FIGS. 8 and 9, the substructure in the pit area 8 for the manufacture of roller conveyors is illustrated. Along the pit walls, which extend parallel to the roller axis, in the example shown, three castors 26 are fastened to the foundation 2 via bearing blocks 27, the bearing blocks 27 being located between the individual roll stands Fi. In the transition from the scaffold area (5) to the travel area 11 there is, as an advantageous example of a possible drive, a pinion gear 28 which is driven by an electric motor 30 via a gear 29 (see FIGS. 2, 10 and 11). The drive is composed, for example, of a direct current motor, a spur gear, an electromagnetic tooth clutch and a shaft that drive the rack and pinion gear 28. The drive rack pinion 28 engages in a drive gear toothing 31 on the underside 32 of the individual support plates 7. So that the support plates 7 do not tilt during the movement Side guide rollers 33, which roll along the side surfaces of the plates 7, are provided, which are also arranged on bearing blocks 34.
Um eine Verfahrbewegung der Supportplatten 7 als Gesamtpaket bzw. als Supportplattform oder als Unterpaket zu ermöglichen, müssen diese lösbar mit- einander verbindbar sein. Die aneinander stoßenden Plattenenden 35, 36 sind mittels einer besonders vorteilhaften Bolzen-Keil-Verbindung gekoppelt, wie dies in Fig. 12 verdeutlicht wird. Hierzu sind an die Unterseiten der Platten Flansche 37, 38 angeschweißt, die jeweils eine Bohrung zur Aufnahme eines gemeinsamen Bolzens 39 aufweisen. Der sich entlang der Endbereiche 35, 36 der Platten erstreckende Bolzen 39 ist durch den Flansch 37 der einen Platte geführt und mit Hilfe einer Halteplatte 40 mittels Schrauben 41 , 42 befestigt und ragt über das Plattenende 35 hinaus. An dem Flansch 37 selbst sind Führungselemente 43 angeordnet, die den Bolzen 39 radial halten und die mit einem Sicherungsblech 44 überspannt sind. Zur Verbindung zweier Platten kommt der Bolzen 39 mit der Bohrung im Flansch 38 der anderen Platte in Eingriff. Die zweite Platte wird mittels einer Anschlagkante 45 positioniert. In ein vorspringendes Ende 46 des Bolzens 39, das mit einer entsprechende Aufnahmeöffnung 47 versehen ist, wird anschließend zur Arretierung ein Keil 48 eingeführt. Zum Öffnen der Verbindung wird der Keil 48 entfernt und in eine Keilablageta- sehe 49, die in die Plattenfläche benachbart zum Bolzen 39 eingelassen ist, abgesenkt. Diese Bolzen-Keil-Verbindung nebst Keilablagetasche 49 bietet eine sichere und wenig störanfällige Verbindung, die insbesondere den rauhen Bedingungen im Walzwerk gut standhält.In order to enable a movement of the support plates 7 as a complete package or as a support platform or as a subpackage, they must be releasably connectable to one another. The abutting plate ends 35, 36 are coupled by means of a particularly advantageous bolt-wedge connection, as is illustrated in FIG. 12. For this purpose, flanges 37, 38 are welded to the undersides of the plates, each of which has a bore for receiving a common bolt 39. The bolt 39, which extends along the end regions 35, 36 of the plates, is guided through the flange 37 of the one plate and fastened with the aid of a holding plate 40 by means of screws 41, 42 and projects beyond the plate end 35. On the flange 37 itself there are guide elements 43 which hold the bolt 39 radially and which are spanned with a locking plate 44. To connect two plates, the pin 39 engages with the bore in the flange 38 of the other plate. The second plate is positioned by means of a stop edge 45. A wedge 48 is then inserted into a projecting end 46 of the bolt 39, which is provided with a corresponding receiving opening 47, for locking purposes. To open the connection, the wedge 48 is removed and lowered into a wedge storage pocket 49, which is embedded in the plate surface adjacent to the bolt 39. This bolt-wedge connection together with the wedge storage pocket 49 offers a secure connection which is less susceptible to faults and which in particular withstands the rough conditions in the rolling mill.
Zum Öffnen der Verbindung bzw. zum Entfernen der Verriegelungskeile 48 ist ein Keilabziehwerkzeug 50 vorgesehen, wie auch mit der Fig. 13 verdeutlicht. Dieses Keilabziehwerkzeug 50 setzt sich aus einem an einem Stab 51 oder Hebel drehbar gelagerten Haken 52 sowie zweier unterhalb des Drehlagers angeordneter Abrückrollen 53, 54 zusammen. Die Abrückrollen 53, 54, die auf der Platte 7 zur Auflage kommen, gewährleisten einen großen Hebelarm sowie einen definierten Ausziehpunkt für den Keil 48. Mit Hilfe des vorgeschlagenen Walzwerkes ist es möglich, sowohl einen Arbeitswalzenwechsel durch Querverschieben der Supportplatten um eine geringe Distanz als auch ein Stützwalzenwechsel durch Querverfahren der Supportplatten aus dem jeweiligen Grubenbereich bzw. dem vollständigen Gerüstbe- reich in einen dafür bereitgestellten Verfahrbereich in Form einer Rollenbahn schnell zu ermöglichen. Hierzu sind alle Supportplatten miteinander verbunden und ergeben damit eine Gesamt-Supportplattform, die nach Belieben aufgetrennt werden kann. Der Walzenwechsel erfolgt mit Hilfe von in Walzrichtung querverfahrbarer Supportplatten. To open the connection or to remove the locking wedges 48, a wedge pulling tool 50 is provided, as is also illustrated in FIG. 13. This wedge-pulling tool 50 is composed of a hook 52 rotatably mounted on a rod 51 or lever and two pull-off rollers 53, 54 arranged below the pivot bearing. The moving rollers 53, 54, which come to rest on the plate 7, ensure a large lever arm and a defined pull-out point for the wedge 48. With the help of the proposed rolling mill, it is possible to quickly change both a work roll by moving the support plates sideways by a short distance and a support roll change by moving the support plates crosswise from the respective pit area or the complete scaffolding area into a travel area provided for this purpose in the form of a roller conveyor enable. For this purpose, all support plates are connected to each other and thus result in an overall support platform that can be separated at will. The rolls are changed with the help of support plates that can be moved in the rolling direction.
Bezugszeichenliste:LIST OF REFERENCE NUMBERS
1 Walzwerk1 rolling mill
2 Fundament 3 Schere2 foundation 3 scissors
4 Zunderwäscher4 scale washers
5 Gerüstbereich5 scaffolding area
6 Supportplattenlinie (6' verfahrene Supportplattform)6 support plate line (6 'moved support platform)
7 Supportplatten 8 Gruben7 support plates 8 pits
9 Hüttenflur vor dem Walzwerk und im Gerüstbereich9 Hut corridor in front of the rolling mill and in the stand area
10 Auslaufbereich10 run-out area
11 Verfahrbereich11 travel range
12 Stützwalzen 13 Ausfahrschienen12 support rollers 13 extension rails
14 Arbeitswalzen (14'verbrauchte Arbeitswalzen)14 work rolls (14 ' used work rolls)
15 Ausfahr-Zylinder-Einheit15 extension cylinder unit
16 Hydraulik-Zylinder16 hydraulic cylinders
17 Untergruppen von Supportplatten der Gesamtplattform 6' 18 abgesenkter Hüttenflur17 subgroups of support plates of the overall platform 6 '18 lowered mill floor
19 Tragrollen 0 Tragrollen-Bahn 1 ebene Oberfläche 2 Führungsbund der Tragrollen 3 erhöhter Hüttenflur 4 Tragrollen-Bahnen 5 Abdeckung 6 Laufrollen 7 Lagerböcke 8 Triebstockritzel 9 Getriebe Elektromotor19 idlers 0 idler track 1 flat surface 2 guide collar of idlers 3 elevated hut floor 4 idler tracks 5 cover 6 rollers 7 bearing blocks 8 pinion pinion 9 gear electric motor
TriebstockverzahnungBolt tooth
Unterseite einer Supportplatte 7Bottom of a support plate 7
SeitenführungsrollenSide guide rollers
Lagerböcke der SeitenführungsrollenBearing blocks of the side guide rollers
Ende einer Platte 7End of a plate 7
Ende einer daran anstoßenden Platte 7End of a plate 7 abutting it
Flansch an einer PlatteFlange on a plate
Flansch an einer PlatteFlange on a plate
Bolzenbolt
HalteplatteRetaining plate
Schraubescrew
Schraubescrew
Führungselementguide element
SicherungsblechLocking plate
Anschlagkante vorspringendes Ende des BolzensStop edge protruding end of the bolt
Aufnahmeöffnung im Bolzen für KeilOpening in the bolt for the wedge
Keilwedge
KeilablagetascheWedge Document Box
KeilabziehwerkzeugKeilabziehwerkzeug
StabRod
Hakenhook
AbrückrolleAbrückrolle
AbrückrolleAbrückrolle
F6) WalzgerüsteF6) Roll stands
Walzrichtungrolling direction
Bedienseite operating side

Claims

Patentansprüche:claims:
1 . Walzwerk (1 ) mit mehreren Walzgerüsten (Fi) und mit auf der Bedienseite (BS) der Gerüste (Fi) vorgesehenen und quer zu den Walzenach- sen verschiebbaren Supportplatten (7), die zur Aufnahme von Arbeitswalzensätzen (14) ausgestattet sind und die an den Hüttenflur (9) angrenzen, und mit jeweils den Gerüsten (Fi) auf der Bedienseite (BS) vorgeordneten Gruben (8), deren Grund zum Ausfahren für Stützwalzensätze (12) ausgestattet ist, dadurch gekennzeichnet, dass die Supportplatten (7) als Supportplattenlinie (6) unmittelbar neben den Walzgerüsten (Fi), die Gruben (8) bedeckend, angeordnet sind, dass die Supportplatten (7) lösbar miteinander verbunden sind und dass zum Wechsel der Stützwalzensätze (12) die Supportplattenlinie (6) in Untergruppen (17) von miteinander verbundenen Supportplatten oder in ihrer Gesamtheit (6') zum Öffnen von mindestens einer bis zu allen Gruben (8) quer zu den Walzenachsen entlang der Grubenlinie aus dem Gerüstbereich (5) heraus verfahrbar ist.1 . Rolling mill (1) with a plurality of roll stands (Fi) and with support plates (7) provided on the operating side (BS) of the stands (Fi) and displaceable transversely to the roll axes, which are equipped to accommodate work roll sets (14) and the like border the hut hallway (9), and with the scaffolding (Fi) on the operating side (BS) upstream pits (8), the bottom of which is equipped for extension roller sets (12), characterized in that the support plates (7) as a support plate line (6) are arranged directly next to the roll stands (Fi), covering the pits (8), in such a way that the support plates (7) are detachably connected to one another and that the support plate line (6) is divided into sub-groups (17) for changing the support roller sets (12). of interconnected support plates or in their entirety (6 ' ) for opening at least one to all pits (8) transversely to the roller axes along the pit line from the stand area (5).
2. Walzwerk nach Anspruch 1 , dadurch gekennzeichnet, dass der Verfahrbereich (1 1 ) der Supportplattenlinie im Anschluss an den Gerüstbereich (5) als Rollenbahn mit Tragrollen (19) für die Supportplatten ausgestattet ist. 2. Rolling mill according to claim 1, characterized in that the traversing area (1 1) of the support plate line following the stand area (5) is equipped as a roller conveyor with support rollers (19) for the support plates.
5 3. Walzwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hüttenflur (18) im Verfahrbereich (11) der Supportplattenlinie, der sich an den Gerüstbereich (5) anschließt, im Verhältnis zum Hüttenflur (9) im Gerüstbereich (5) abgesenkt ist und die Supportplattenlinie 10 oberhalb des Hüttenflurs (18) verfahrbar ist.5 3. Rolling mill according to claim 1 or 2, characterized in that the hut floor (18) in the travel area (11) of the support plate line, which adjoins the stand area (5), in relation to the hut floor (9) in the stand area (5) lowered and the support plate line 10 can be moved above the hut floor (18).
4. Walzwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hüttenflur (23) im Verfahrbereich (11) der Supportplattenlinie, 15 der sich an den Gerüstbereich (5) anschließt, im Verhältnis zum Hüttenflur (9) im Gerüstbereich (5) erhöht angeordnet ist und die Supportplattenlinie unterhalb des Hüttenflurs (23) verfahrbar ist.4. Rolling mill according to claim 1 or 2, characterized in that the hut hallway (23) in the moving area (11) of the support plate line, 15 which adjoins the stand area (5), increases in relation to the hut hallway (9) in the stand area (5) is arranged and the support plate line can be moved below the hut floor (23).
5. Walzwerk nach Anspruch 4, 20 dadurch gekennzeichnet, dass der Verfahrbereich (1 1 ) mit einer Abdeckung (25) versehen ist, die zu den Tragrollen (19) beabstandet angeordnet ist und diese Abdeckung (25) den Hüttenflur (23) im Verfahrbereich (1 1) bildet.5. Rolling mill according to claim 4, 20 characterized in that the travel area (1 1) is provided with a cover (25) which is arranged at a distance from the support rollers (19) and this cover (25) the hut floor (23) in the travel area (1 1) forms.
25 6. Walzwerk nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die lösbare Verbindung zwischen den Supportplatten (7) eine Bolzen-Keil-Verbindung (39, 48) ist.25 6. Rolling mill according to one of the preceding claims, characterized in that the releasable connection between the support plates (7) is a bolt-wedge connection (39, 48).
301. Walzwerk nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass im Gerüstbereich (5) zum Transport der Supportplatten (7) Laufrollen (26) angeordnet sind, die in Lagerböcken (27), die sich in etwa entlang der Grubenwände, die sich parallel zu den Walzenachsen erstrecken, angeordnet sind. 301. Rolling mill according to one of the preceding claims, characterized in that in the stand area (5) for transporting the support plates (7) rollers (26) are arranged in the bearing blocks (27), which are approximately along the pit walls, which are parallel extend to the roller axes, are arranged.
EP03776907A 2002-12-05 2003-11-15 Rolling mill comprising means for the change of rolls Expired - Lifetime EP1572386B1 (en)

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PCT/EP2003/012790 WO2004050271A1 (en) 2002-12-05 2003-11-15 Rolling mill comprising means for exchanging the rolls

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WO2007080086A1 (en) 2006-01-09 2007-07-19 Sms Demag Ag Method and device for changing rolls
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RU2005117363A (en) 2006-01-20
DE50303320D1 (en) 2006-06-14
CN100479941C (en) 2009-04-22
AU2003286172A1 (en) 2004-06-23
BR0316999B1 (en) 2011-05-31
CN1720112A (en) 2006-01-11
ATE325667T1 (en) 2006-06-15
ES2263045T3 (en) 2006-12-01
DE10256749A1 (en) 2004-06-17
WO2004050271A1 (en) 2004-06-17
CA2507892C (en) 2010-08-17
BR0316999A (en) 2005-10-25
US20060144114A1 (en) 2006-07-06
JP2006508802A (en) 2006-03-16
EP1572386B1 (en) 2006-05-10
CA2507892A1 (en) 2004-06-17
JP4410683B2 (en) 2010-02-03
RU2323053C2 (en) 2008-04-27
US7363793B2 (en) 2008-04-29

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