EP0340504B1 - Device for bending and balancing axial movable rolls of a rolling stand - Google Patents

Device for bending and balancing axial movable rolls of a rolling stand Download PDF

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Publication number
EP0340504B1
EP0340504B1 EP89106674A EP89106674A EP0340504B1 EP 0340504 B1 EP0340504 B1 EP 0340504B1 EP 89106674 A EP89106674 A EP 89106674A EP 89106674 A EP89106674 A EP 89106674A EP 0340504 B1 EP0340504 B1 EP 0340504B1
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EP
European Patent Office
Prior art keywords
bending
housing
roll
guide block
lifting housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89106674A
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German (de)
French (fr)
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EP0340504A2 (en
EP0340504A3 (en
Inventor
Heinrich Bohnenkamp
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SMS Siemag AG
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SMS Schloemann Siemag AG
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Publication date
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Priority to AT89106674T priority Critical patent/ATE85912T1/en
Publication of EP0340504A2 publication Critical patent/EP0340504A2/en
Publication of EP0340504A3 publication Critical patent/EP0340504A3/en
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Publication of EP0340504B1 publication Critical patent/EP0340504B1/en
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    • 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
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • 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
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls

Definitions

  • the invention relates to a bending and balancing device for axially displaceable rolls of a roll stand, in particular for the work rolls of a four-high roll stand, a guide block being arranged on both sides in the window of each roll stand stand and the roll chocks on both sides on an upper or respectively vertically guided guide block the lower lifting housing is supported in a horizontally sliding manner and the roll bending forces are transmitted from bending cylinders to the roll chocks.
  • a bending and balancing device of the type mentioned is known from DE-OS 36 27 690.
  • this bending and balancing device two bending cylinders act on each lifting housing that horizontally guides the roller chocks, which are arranged such that the respective upper lifting housing receives the cylinder piston, while the piston rod is connected to the lower lifting housing.
  • the cylinder pistons arranged in the upper lifting housing are pressurized on the outside of the piston, as a result of which compressive forces are exerted on the piston rods act on the lower lift housing.
  • upward forces are transmitted from the upper lift case to the slide surfaces of the chocks, and downward forces are transmitted from the lower lift case to the slide surfaces of the lower slide.
  • the arrangement of the lifting housing and bending cylinder can be easily replaced for maintenance purposes, which means that shorter downtimes of the roll stand can be achieved; this applies all the more if the hydraulic device for axial work roll displacement is also connected to the lifting housing.
  • a four-high rolling stand in which the chocks engage positively and non-positively in a horizontal guide groove of lifting housings, in which bending cylinders are arranged, which in turn are supported on the stand.
  • a tensioning cylinder is also arranged in a lifting housing, which is operatively connected to the bending cylinder and whose piston shaft is also supported on the scaffolding stand.
  • the object of the present invention is to improve the known bending and balancing device and to apply pressure forces to each individual lifting housing as separately as possible in order to be able to influence the roll bending even better and to be able to adjust the balancing of the rolls with the chocks even more precisely in order to be able to do so to avoid uncontrolled forces and moments on the highly loaded roller bearings.
  • At least one preferably hydraulically acting bending cylinder acts on each upper and lower lifting housing and is supported on the guide block fixed to the stand, the guide block in its central region having a web projecting into the stand window of the roll stand, on its upper and lower Web surface of the bending cylinder is supported and wherein the lifting housing for supporting the roll chock has an upper shoulder, in which the slide for the horizontal support surface of the roll chock is embedded such that the center of the bending cylinder and the center of the support surface lie in a vertical plane.
  • the bending forces advantageously act on each individual lifting housing and thus separately on the chocks of the upper and lower work rolls. Reactions of the bending forces as a result of reaction forces on the upper and lower work roll are avoided, since the reaction forces are absorbed by the roll stands. As a result, the bending forces can be applied to each individual roller more precisely and more effectively.
  • the support on the web surfaces of the guide block enables good guidance during the vertical movement of the lifting housing; due to the perfect guidance of the lifting housing, an excellent sealing of the housing against sinter, dust or other harmful influences from the rolling mill operation is guaranteed; In particular, the alignment of the bending cylinder and the support surface in a vertical plane avoids additional frictional forces on the support surfaces, since no moment can occur between the support of the work roll chocks and the bending cylinder.
  • An embodiment of the invention is characterized in that the bending cylinder is arranged at least partially in the lifting housing, the cylinder piston being guided in a corresponding bore in the lifting housing and the piston shaft being connected to the web of the guide block.
  • Another embodiment of the invention is concerned with the measure that the guide block has a central projection adapted to the vertical extent of the lifting housing, which engages in a correspondingly designed recess in the central lifting housing and that at least on the vertical contact surfaces of the lifting housing with the guide block and the roller chock partially sliding surfaces are arranged. This ensures that each lifting housing is as long as possible on the guide block is guided in the middle, the frictional forces counteracting the displacement being limited to the design-related minimum dimension.
  • a device for axially displacing the rolls, in particular the work rolls is connected to the lifting housing and is connected to the roll chock with the aid of at least one driver element.
  • the work rolls 1, 2 are mounted in chocks 4, 5 in the stand 3 of the roll stand (not shown); the upper work roll 1 in the upper roll chock 4 and the lower work roll 2 in the lower roll chock 5.
  • Each roll chock is slid horizontally on both sides on the shoulder 9 of a lift housing 6, 7.
  • the roller chock is provided with a support surface 8 and a slide 10 is embedded in the load-bearing shoulder 9 of the lifting housing.
  • the lifting housing 6, 7 is guided in a vertically sliding manner on a common guide block 11.
  • the guide block 11 is firmly connected to the roll stand.
  • the guide block has a central projection 12 which is approximately matched to the vertical extent of the lifting housing 6, 7 and which engages in a correspondingly designed recess 13 in the central longitudinal region of the lifting housing.
  • the vertical contact surfaces of the lifting housing with the guide block 11 and the roller chock 4, 5 are provided with the sliding surfaces 14, 15 (FIG. 2).
  • the bending and balancing cylinders 16, 17 are in the Lift housing 6, 7 arranged such that the cylinder piston 18 is guided in a corresponding bore 19 in the lifting housing and that the piston shaft 20 is supported on a web 21 of the guide block 11 which projects into the stator window 28.
  • Fig. 2 shows a partial section of the scaffold stand 3, not shown, with which the guide block 11 is firmly connected.
  • the central projection 12 of the guide block, which engages in the corresponding recess 13 of the upper lifting housing 6, is clearly recognizable.
  • the bores 19 shown in dashed lines for receiving the cylinder pistons 18 of the bending cylinders 16 can be seen in the lifting housing.
  • the vertical contact surfaces of the lifting housing to the guide block 11 and to the roller chock 4 contain the sliding surfaces 14, 15.
  • a device 24 for axially displacing the work roller 1 is connected to the lifting housing 6 and is connected to the roller chock 4 by means of a driver element 25.
  • the driver element consists, for example, of two pinions 26 which are mounted on the one hand on the thrust housing 27 of the displacement device and on the other hand mesh with a toothed rack (not shown in more detail) which is arranged on the roller chock 4.
  • the bending cylinders 16, 17 arranged in the lifting housings 6, 7 are pressurized on the outside of the piston with a hydraulic medium, each bending cylinder being supported on the upper web surface 22 and the lower web surface 23 of the guide block 11 fixed to the stand.
  • the pressure forces generated are transferred from the bending cylinder to the lifting housing transferred and passed from there into the roll chocks 4, 5.
  • each lifting housing has its own bending cylinder, which is supported separately on the guide block 11, it is possible to apply exactly predetermined bending forces to each lifting housing and thus into each side of the roll chock or to ensure a balanced balance of the roll chocks, so that predetermined bending forces ensure the desired preload of the work rolls and, on the other hand, adverse moments on the roll bearings are avoided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Warping, Beaming, Or Leasing (AREA)

Abstract

In a device for bending and balancing axially movable rolls of a rolling stand, in particular for the work rolls of a four-high rolling stand, in which there is on both sides a guide block 11 which is fixed to the housing in the window of each rolling-stand housing 3, and the roll chocks 4, 5 are supported to slide horizontally on an upper and lower lifting cage 6, 7, respectively, guided vertically on the guide block, and the roll bending forces are transmitted to the roll chocks by bending cylinders 16, 17, an improvement as regards the transmission of the bending and displacement forces to the roll chocks is achieved by virtue of the fact that at least one, preferably hydraulically acting bending cylinder 16, 17 engages on each upper and lower lifting cage 6, 7, the said bending cylinder(s) being supported on the guide block 11 fixed to the housing. <IMAGE>

Description

Die Erfindung betrifft eine Biege- und Ausbalanciervorrichtung für axial verschiebbare Walzen eines Walzgerüstes, insbesondere für die Arbeitswalzen eines Quarto-Walzgerüstes, wobei im Fenster eines jeden Walzgerüstständers beiderseits ein Führungsblock ständerfest angeordnet ist und die Walzeneinbaustücke zu beiden Seiten auf einem am Führungsblock vertikal geführten oberen bzw. unteren Hubgehäuse horizontal gleitend abgestützt sind und die Walzenbiegekräfte von Biegezylindern auf die Walzeneinbaustücke übertragen werden.The invention relates to a bending and balancing device for axially displaceable rolls of a roll stand, in particular for the work rolls of a four-high roll stand, a guide block being arranged on both sides in the window of each roll stand stand and the roll chocks on both sides on an upper or respectively vertically guided guide block the lower lifting housing is supported in a horizontally sliding manner and the roll bending forces are transmitted from bending cylinders to the roll chocks.

Eine Biege- und Ausbalanciervorrichtung der eingangs genannten Art ist aus der DE-OS 36 27 690 bekannt. Bei dieser Biege- und Ausbalanciervorrichtung wirken auf jedes die Walzeneinbaustücke horizontal führende Hubgehäuse zwei Biegezylinder, die derart angeordnet sind, daß das jeweils obere Hubgehäuse den Zylinderkolben aufnimmt, während die Kolbenstange mit dem unteren Hubgehäuse verbunden ist. Zur Arbeitswalzenbiegung werden die in dem oberen Hubgehäuse angeordneten Zylinderkolben an der Kolbenaußenseite druckbeaufschlagt, wodurch über die Kolbenstangen Druckkräfte auf das untere Hubgehäuse einwirken. Als Folge davon werden von dem oberen Hubgehäuse aufwärts gerichtete Kräfte auf die Gleitflächen der Einbaustücke übertragen und abwärts gerichtete Kräfte werden von dem unteren Hubgehäuse auf die Gleitflächen des unteren Einbaustücks übertragen.A bending and balancing device of the type mentioned is known from DE-OS 36 27 690. In this bending and balancing device, two bending cylinders act on each lifting housing that horizontally guides the roller chocks, which are arranged such that the respective upper lifting housing receives the cylinder piston, while the piston rod is connected to the lower lifting housing. For work roll bending, the cylinder pistons arranged in the upper lifting housing are pressurized on the outside of the piston, as a result of which compressive forces are exerted on the piston rods act on the lower lift housing. As a result, upward forces are transmitted from the upper lift case to the slide surfaces of the chocks, and downward forces are transmitted from the lower lift case to the slide surfaces of the lower slide.

Die Anordnung von Hubgehäuse und Biegezylinder läßt sich zu Wartungszwecken leicht auswechseln, wodurch kürzere Stillstandszeiten des Walzgerüstes erzielbar sind; dies gilt um so mehr, wenn mit dem Hubgehäuse auch noch die hydraulische Einrichtung zur axialen Arbeitswalzenverschiebung verbunden ist.The arrangement of the lifting housing and bending cylinder can be easily replaced for maintenance purposes, which means that shorter downtimes of the roll stand can be achieved; this applies all the more if the hydraulic device for axial work roll displacement is also connected to the lifting housing.

Aus der JP-A-61-129208 ist ein Quarto-Walzgerüst bekannt, bei dem die Einbaustücke form- und kraftschlüssig in eine horizontale Führungsnut von Hubgehäusen eingreifen, in denen Biegezylinder angeordnet sind, die sich ihrerseits am Gerüstständer abstützen. Zur Verspannung der Einbaustücke zwischen den Gerüstständern ist in einem Hubgehäuse außerdem ein Verspannungszylinder angeordnet, der mit dem Biegezylinder wirkungsmäßig verbunden ist und dessen Kolbenschaft sich ebenfalls am Gerüstständer abstützt. Diese Einbaukonstruktion ist für Walzeneinbaustücke ungünstig, da sie längere Montage- und Demontagezeiten verursacht und zusätzliche Momente und Verspannungskräfte in die Walzenlager einleitet.From JP-A-61-129208 a four-high rolling stand is known, in which the chocks engage positively and non-positively in a horizontal guide groove of lifting housings, in which bending cylinders are arranged, which in turn are supported on the stand. To brace the chocks between the scaffolding stands, a tensioning cylinder is also arranged in a lifting housing, which is operatively connected to the bending cylinder and whose piston shaft is also supported on the scaffolding stand. This built-in construction is unfavorable for roll chocks, as it causes longer assembly and disassembly times and introduces additional moments and tension forces into the roll bearings.

Aus der EP-A-00 84 827 ist ein Sexto-Gerüst bekannt, bei welchem infolge eines anderen Konstruktionsprinzips die Walzeneinbaustücke auf den Kolbenschäften von Biegezylindern aufliegen, die ihrerseits gemeinsam in einem ständerfesten Block angeordnet sind. Ein vergleichbares Konstruktionsprinzip findet sich bei einem Quarto-Walzgerüst gemäß der JP-B-50-12385, bei welchem die Walzeneinbaustücke der Arbeitswalzen ebenfalls auf den Kolbenschäften von Biegezylindern aufliegen, wobei allerdings diese in horizontal bewegbaren Gestellen angeordnet sind, die ihrerseits von einem Führungsgestell dreiseitig umfaßt werden. Das Führungsgestell ist in dem Gerüstständer befestigt. Dieses bekannte Konstruktionsprinzip beschreitet also einen anderen Weg.From EP-A-00 84 827 a six-high stand is known in which, as a result of a different design principle, the roller chocks rest on the piston shafts of bending cylinders, which in turn are arranged together in a stand-fixed block. A comparable design principle can be found in a four-high mill stand according to JP-B-50-12385, in which the roll chocks of the work rolls also rest on the piston shafts of bending cylinders, although these are arranged in horizontally movable frames, which in turn are arranged be surrounded on three sides by a guide frame. The guide frame is fixed in the scaffold stand. This well-known design principle therefore takes a different path.

Die Aufgabe der vorliegenden Erfindung besteht darin, die bekannte Biege- und Ausbalanciervorrichtung zu verbessern und möglichst getrennt auf jedes einzelne Hubgehäuse Druckkräfte aufzubringen, um damit die Walzenbiegung noch besser beeinflussen zu können und die Ausbalancierung der Walzen mit den Einbaustücken noch genauer einstellen zu können, um unkontrollierte Kräfte und Momente an den hochbelasteten Walzenlagern zu vermeiden.The object of the present invention is to improve the known bending and balancing device and to apply pressure forces to each individual lifting housing as separately as possible in order to be able to influence the roll bending even better and to be able to adjust the balancing of the rolls with the chocks even more precisely in order to be able to do so to avoid uncontrolled forces and moments on the highly loaded roller bearings.

Diese Aufgabe wird dadurch gelöst, daß an jedem oberen und unteren Hubgehäuse mindestens ein vorzugsweise hydraulisch wirkender Biegezylinder angreift, der am ständerfesten Führungsblock abgestützt ist, wobei der Führungsblock in seinem mittleren Bereich einen in das Ständerfenster des Walzgerüstständers auskragenden Steg aufweist, auf dessen oberer und unterer Stegfläche der Biegezylinder abgestützt ist und wobei das Hubgehäuse zur Abstützung des Walzeneinbaustücks einen oberen Absatz aufweist, in welchem das Gleitstück für die horizontale Auflagefläche des Walzeneinbaustücks derart eingelassen ist, daß die Mitte des Biegezylinders und die Mitte der Auflagefläche in einer vertikalen Ebene liegen.This object is achieved in that at least one preferably hydraulically acting bending cylinder acts on each upper and lower lifting housing and is supported on the guide block fixed to the stand, the guide block in its central region having a web projecting into the stand window of the roll stand, on its upper and lower Web surface of the bending cylinder is supported and wherein the lifting housing for supporting the roll chock has an upper shoulder, in which the slide for the horizontal support surface of the roll chock is embedded such that the center of the bending cylinder and the center of the support surface lie in a vertical plane.

Durch diese erfindungsgemäßen Maßnahmen wirken die Biegekräfte vorteilhafterweise auf jedes einzelne Hubgehäuse und damit getrennt auf die Einbaustücke der oberen und der unteren Arbeitswalze. Rückwirkungen der Biegekräfte als Folge von Reaktionskräften auf die obere und untere Arbeitswalze werden vermieden, da die Reaktionskräfte von den Walzenständern aufgefangen werden. Infolgedessen können die Biegekräfte auf jede einzelne Walze noch genauer und noch wirksamer aufgebracht werden. Durch die Anordnung von zwei Biegezylindern an jedem Hubgehäuse wird das als hydraulische Waage arbeitende Ausbalanciersystem noch wirksamer einstellbar, so daß unkontrollierte Kräfte und Momente an den hochbelasteten Walzenlagern vermieden werden. Die Abstützung auf den Stegflächen des Führungsblocks ermöglicht eine gute Führung während der senkrechten Bewegung der Hubgehäuse; wegen der einwandfreien Führung des Hubgehäuses ist eine hervorragende Abdichtung des Gehäuses gegen Sinter, Staub oder sonstige schädliche Einflüsse aus dem Walzwerksbetrieb gewährleistet; insbesondere durch die Ausrichtung von Biegezylinder und Auflagefläche in einer vertikalen Ebene werden zusätzliche Reibungskräfte an den Auflageflächen vermieden, da kein Moment zwischen der Auflage der Arbeitswalzeneinbaustücke und der Biegezylinder auftreten kann.By means of these measures according to the invention, the bending forces advantageously act on each individual lifting housing and thus separately on the chocks of the upper and lower work rolls. Reactions of the bending forces as a result of reaction forces on the upper and lower work roll are avoided, since the reaction forces are absorbed by the roll stands. As a result, the bending forces can be applied to each individual roller more precisely and more effectively. Through the Arrangement of two bending cylinders on each lifting housing makes the balancing system working as a hydraulic balance even more effectively adjustable, so that uncontrolled forces and moments on the highly loaded roller bearings are avoided. The support on the web surfaces of the guide block enables good guidance during the vertical movement of the lifting housing; due to the perfect guidance of the lifting housing, an excellent sealing of the housing against sinter, dust or other harmful influences from the rolling mill operation is guaranteed; In particular, the alignment of the bending cylinder and the support surface in a vertical plane avoids additional frictional forces on the support surfaces, since no moment can occur between the support of the work roll chocks and the bending cylinder.

Eine Ausgestaltung der Erfindung ist dadurch ausgezeichnet, daß der Biegezylinder wenigstens teilweise im Hubgehäuse angeordnet ist, wobei der Zylinderkolben in einer entsprechenden Bohrung im Hubgehäuse geführt ist und der Kolbenschaft mit dem Steg des Führungsblocks verbunden ist. Diese konstruktiven Maßnahmen lassen eine einfache, robuste und betriebssichere Bauweise der Biegevorrichtung zu. Die Hubgehäuse mit den integrierten Biegezylindern können schnell als eine Baueinheit gewechselt werden. Es werden hierdurch geringe Stillstandszeiten infolge einer wartungsfreundlichen Konstruktion erzielt.An embodiment of the invention is characterized in that the bending cylinder is arranged at least partially in the lifting housing, the cylinder piston being guided in a corresponding bore in the lifting housing and the piston shaft being connected to the web of the guide block. These constructive measures allow a simple, robust and reliable construction of the bending device. The lifting housing with the integrated bending cylinders can be quickly replaced as a single unit. As a result, low downtimes are achieved due to a maintenance-friendly design.

Eine weitere Ausbildung der Erfindung befaßt sich mit der Maßnahme, daß der Führungsblock einen der vertikalen Erstreckung des Hubgehäuses angepaßten, mittigen Vorsprung aufweist, der in eine entsprechend ausgebildete Ausnehmung im mittigen Hubgehäuse eingreift und daß an den vertikalen Kontaktflächen des Hubgehäuses zum Führungsblock und zum Walzeneinbaustück zumindest teilweise Gleitflächen angeordnet sind. So ist sichergestellt, daß jedes Hubgehäuse über eine möglichst große Länge am Führungsblock mittig geführt ist, wobei die der Verschiebung entgegen wirkenden Reibungskräfte auf das konstruktiv bedingte Mindestmaß beschränkt sind.Another embodiment of the invention is concerned with the measure that the guide block has a central projection adapted to the vertical extent of the lifting housing, which engages in a correspondingly designed recess in the central lifting housing and that at least on the vertical contact surfaces of the lifting housing with the guide block and the roller chock partially sliding surfaces are arranged. This ensures that each lifting housing is as long as possible on the guide block is guided in the middle, the frictional forces counteracting the displacement being limited to the design-related minimum dimension.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung ist mit dem Hubgehäuse eine Vorrichtung zum axialen Verschieben der Walzen, insbesondere der Arbeitswalzen verbunden, die mit Hilfe wenigstens eines Mitnehmerelementes mit dem Walzeneinbaustück in Verbindung steht. Hierdurch werden Relativbewegungen zwischen den Walzeneinbaustücken und dem Verschiebesystem bei der senkrechten Bewegung der Arbeitswalzen vermieden. Es können deshalb auch keine Kippmomente auf die Walzenlager einwirken, so daß deren Tragfähigkeit nicht beeinträchtigt wird.In a further advantageous embodiment of the invention, a device for axially displacing the rolls, in particular the work rolls, is connected to the lifting housing and is connected to the roll chock with the aid of at least one driver element. This avoids relative movements between the roll chocks and the displacement system during the vertical movement of the work rolls. Therefore, no tilting moments can act on the roller bearings, so that their load-bearing capacity is not impaired.

Die Erfindung wird anhand eines Ausführungsbeispiels näher dargestellt. Es zeigen

Figur 1
einen Teilschnitt der oberen und unteren Arbeitswalzeneinbaustücke mit Hubgehäuse und Biegezylinder,
Figur 2
einen Teilschnitt eines Walzeneinbaustücks mit einer Einrichtung zur axialen Verschiebung der Arbeitswalze.
The invention is illustrated in more detail using an exemplary embodiment. Show it
Figure 1
a partial section of the upper and lower work roll chocks with lifting housing and bending cylinder,
Figure 2
a partial section of a roll chock with a device for axial displacement of the work roll.

Gemäß Fig. 1 sind die Arbeitswalzen 1, 2 in dem nicht näher dargestellten Gerüstständer 3 des Walzgerüstes in Einbaustücken 4, 5 gelagert; die obere Arbeitswalze 1 in dem oberen Walzeneinbaustück 4 und die untere Arbeitswalze 2 in dem unteren Walzeneinbaustück 5. Jedes Walzeneinbaustück ist auf seinen beiden Seiten horizontal gleitend auf dem Absatz 9 eines Hubgehäuses 6, 7 geführt. Zu diesem Zweck ist das Walzeneinbaustück mit einer Auflagefläche 8 versehen und in dem tragenden Absatz 9 des Hubgehäuses ist ein Gleitstück 10 eingelassen.According to FIG. 1, the work rolls 1, 2 are mounted in chocks 4, 5 in the stand 3 of the roll stand (not shown); the upper work roll 1 in the upper roll chock 4 and the lower work roll 2 in the lower roll chock 5. Each roll chock is slid horizontally on both sides on the shoulder 9 of a lift housing 6, 7. For this purpose, the roller chock is provided with a support surface 8 and a slide 10 is embedded in the load-bearing shoulder 9 of the lifting housing.

Das Hubgehäuse 6, 7 ist an einem gemeinsamen Führungsblock 11 vertikal gleitend geführt. Der Führungsblock 11 ist mit dem Walzgerüstständer fest verbunden. Der Führungsblock weist einen der vertikalen Erstreckung des Hubgehäuses 6, 7 etwa angepaßten mittigen Vorsprung 12 auf, der in eine entsprechend ausgebildete Ausnehmung 13 im mittleren Längsbereich des Hubgehäuses eingreift. Die vertikalen Kontaktflächen des Hubgehäuses zum Führungsblock 11 und zum Walzeneinbaustück 4,5 sind mit den Gleitflächen 14, 15 versehen (Fig. 2). Die Biege- und Ausbalancierzylinder 16, 17 sind im Hubgehäuse 6, 7 derart angeordnet, daß der Zylinderkolben 18 in einer entsprechenden Bohrung 19 im Hubgehäuse geführt ist und daß der Kolbenschaft 20 auf einem in das Ständerfenster 28 auskragenden Steg 21 des Führungsblocks 11 abgestützt ist.The lifting housing 6, 7 is guided in a vertically sliding manner on a common guide block 11. The guide block 11 is firmly connected to the roll stand. The guide block has a central projection 12 which is approximately matched to the vertical extent of the lifting housing 6, 7 and which engages in a correspondingly designed recess 13 in the central longitudinal region of the lifting housing. The vertical contact surfaces of the lifting housing with the guide block 11 and the roller chock 4, 5 are provided with the sliding surfaces 14, 15 (FIG. 2). The bending and balancing cylinders 16, 17 are in the Lift housing 6, 7 arranged such that the cylinder piston 18 is guided in a corresponding bore 19 in the lifting housing and that the piston shaft 20 is supported on a web 21 of the guide block 11 which projects into the stator window 28.

Fig. 2 zeigt in einem Teilschnitt den nicht näher dargestellten Gerüstständer 3, mit dem der Führungsblock 11 fest verbunden ist. Deutlich erkennbar ist der mittige Vorsprung 12 des Führungsblocks, der in die entsprechende Ausnehmung 13 des oberen Hubgehäuses 6 eingreift. In dem Hubgehäuse sind die gestrichelt dargestellten Bohrungen 19 zur Aufnahme der Zylinderkolben 18 der Biegezylinder 16 zu sehen. Die senkrechten Kontaktflächen des Hubgehäuses zum Führungsblock 11 und zum Walzeneinbaustück 4 enthalten die Gleitflächen 14, 15. Mit dem Hubgehäuse 6 ist eine Vorrichtung 24 zum axialen Verschieben der Arbeitswalze 1 verbunden, die mit Hilfe eines Mitnehmerelementes 25 mit dem Walzeneinbaustück 4 in Verbindung steht. Das Mitnehmerelement besteht bspw. aus zwei Ritzeln 26, die einerseits am Schubgehäuse 27 der Verschiebevorrichtung gelagert sind und andererseits mit einer nicht näher dargestellten Zahnstange kämmen, die an dem Walzeneinbaustück 4 angeordnet ist.Fig. 2 shows a partial section of the scaffold stand 3, not shown, with which the guide block 11 is firmly connected. The central projection 12 of the guide block, which engages in the corresponding recess 13 of the upper lifting housing 6, is clearly recognizable. The bores 19 shown in dashed lines for receiving the cylinder pistons 18 of the bending cylinders 16 can be seen in the lifting housing. The vertical contact surfaces of the lifting housing to the guide block 11 and to the roller chock 4 contain the sliding surfaces 14, 15. A device 24 for axially displacing the work roller 1 is connected to the lifting housing 6 and is connected to the roller chock 4 by means of a driver element 25. The driver element consists, for example, of two pinions 26 which are mounted on the one hand on the thrust housing 27 of the displacement device and on the other hand mesh with a toothed rack (not shown in more detail) which is arranged on the roller chock 4.

Zur Arbeitswalzenbiegung und zur Ausbalancierung der Walzen werden die in den Hubgehäusen 6, 7 angeordneten Biegezylinder 16, 17 an der Kolbenaußenseite mit einem hydraulischen Medium druckbeaufschlagt, wobei sich jeder Biegezylinder auf der oberen Stegfläche 22 bzw. der unteren Stegfläche 23 des ständerfesten Führungsblocks 11 abstützt. Die erzeugten Druckkräfte werden von dem Biegezylinder auf das Hubgehäuse übertragen und von dort in die Walzeneinbaustücke 4, 5 geleitet. Durch die Maßnahme, daß jedes Hubgehäuse eigene Biegezylinder aufweist, die sich jeweils getrennt an dem Führungsblock 11 abstützen ist es möglich, auf jedes Hubgehäuse und damit in jede Seite des Walzeneinbaustücks exakt vorgegebene Biegekräfte einzuleiten bzw. für eine ausgewogene Ausbalancierung der Walzeneinbaustücke zu sorgen, so daß vorgegebene Biegekräfte die gewünschte Vorspannung der Arbeitswalzen gewährleisten und andererseits beeinträchtigende Momente auf die Walzenlager vermieden werden.For work roll bending and for balancing the rolls, the bending cylinders 16, 17 arranged in the lifting housings 6, 7 are pressurized on the outside of the piston with a hydraulic medium, each bending cylinder being supported on the upper web surface 22 and the lower web surface 23 of the guide block 11 fixed to the stand. The pressure forces generated are transferred from the bending cylinder to the lifting housing transferred and passed from there into the roll chocks 4, 5. By the measure that each lifting housing has its own bending cylinder, which is supported separately on the guide block 11, it is possible to apply exactly predetermined bending forces to each lifting housing and thus into each side of the roll chock or to ensure a balanced balance of the roll chocks, so that predetermined bending forces ensure the desired preload of the work rolls and, on the other hand, adverse moments on the roll bearings are avoided.

BezugszeichenübersichtReference symbol overview

11
obere Arbeitswalzeupper work roll
22nd
untere Arbeitswalzelower work roll
33rd
GerüstständerScaffolding stand
44th
oberes Walzeneinbaustückupper roller chock
55
unteres Walzeneinbaustücklower roller chock
66
oberes Hubgehäuseupper lift housing
77
unteres Hubgehäuselower lift housing
88th
AuflageflächeContact surface
99
Absatz des HubgehäusesHeel of the lift housing
1010th
GleitstückSlider
1111
FührungsblockGuide block
1212
mittiger Vorsprungcentral projection
1313
AusnehmungRecess
14, 1514, 15
GleitflächenSliding surfaces
16, 1716, 17
Biege- und AusbalancierzylinderBending and balancing cylinders
1818th
ZylinderkolbenCylinder piston
1919th
Bohrungdrilling
2020th
KolbenschaftPiston skirt
2121
Stegweb
2222
obere Stegflächeupper bridge surface
2323
untere Stegflächelower bridge surface
2424th
VerschiebevorrichtungSlider
2525th
MitnehmerelementDriver element
2626
Ritzelpinion
2727
SchubgehäuseDrawer housing
2828
StänderfensterStand window

Claims (4)

  1. Bending and balancing device for axially displaceable rolls (1,  2) of a roll stand, in particular for the work rolls of a four-high roll stand, wherein a guide block (11) is arranged, fast with the housing, at both sides in the window of each roll stand housing (3) and the roll chocks (4, 5) are supported at both sides to be horizontally slidable on an upper or lower lifting housing (6, 7) vertically guided at the guide block (11) and the roll bending forces are transmitted by bending cylinders (16, 17) to the roll chocks (4,  5), characterised thereby that at least one bending cylinder (16, 17), which is preferably hydraulically acting and which is supported at the guide block (11) fast with the housing, engages at each upper and lower lifting housing (6, 7), wherein the guide block (11) has in its middle region a web (21), which projects into the housing window (28) of the roll stand housing (3) and on the upper and lower web surface (22, 23) of which the bending cylinder (16, 17) is supported, and wherein the lifting housing (6, 7) has, for the support of the roll chock (4, 5), an upper ledge (9) in which the slide member (10) for the horizontal bearing seat (8) of the roll chock (4, 5) is so let in that the centre of the bending cylinder (16, 17) and the centre of the bearing seat (8) lie in one vertical plane.
  2. Bending and balancing device according to claim 1, characterised thereby that the bending cylinder (16, 17) is arranged at least partly in the lifting housing (6, 7), wherein the cylinder piston (18) is guided in a corresponding bore (19) in the lifting housing (6, 7) and the piston rod (20) is connected with the web (21) of the guide block (11).
  3. Bending and balancing device according to claim 1 or 2, characterised thereby that the guide block (11) comprises a central projection (12), which is matched to the vertical extent of the lifting housing (6, 7) and which engages in a correspondingly constructed recess (13) in the central lifting housing, and that at least partial slide seats (14, 15) are arranged at the vertical contact surfaces of the lifting housing (6, 7) relative to the guide block (11) and relative to the roll chock (4, 5).
  4. Bending and balancing device according to at least one of claims 1 to 3, characterised thereby that a device (24) for the axial displacing of the rolls (1, 2), in particular of the work rolls, is connected with the lifting housing (6, 7) and with the aid of at least one entraining element (25), stands in connection with the roll chock (4, 5).
EP89106674A 1988-05-06 1989-04-14 Device for bending and balancing axial movable rolls of a rolling stand Expired - Lifetime EP0340504B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106674T ATE85912T1 (en) 1988-05-06 1989-04-14 BENDING AND BALANCING DEVICE FOR AXIALLY MOVABLE ROLLERS OF A ROLLING STAND.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815454A DE3815454A1 (en) 1988-05-06 1988-05-06 BENDING AND BALANCING DEVICE FOR AXIAL SLIDING ROLLS OF A ROLLING DEVICE
DE3815454 1988-05-06

Publications (3)

Publication Number Publication Date
EP0340504A2 EP0340504A2 (en) 1989-11-08
EP0340504A3 EP0340504A3 (en) 1990-06-06
EP0340504B1 true EP0340504B1 (en) 1993-02-24

Family

ID=6353777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106674A Expired - Lifetime EP0340504B1 (en) 1988-05-06 1989-04-14 Device for bending and balancing axial movable rolls of a rolling stand

Country Status (5)

Country Link
US (1) US4967582A (en)
EP (1) EP0340504B1 (en)
AT (1) ATE85912T1 (en)
DE (2) DE3815454A1 (en)
ES (1) ES2038798T3 (en)

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DE4034436A1 (en) * 1990-10-29 1992-04-30 Schloemann Siemag Ag ROLLING DEVICE WITH ARRANGEMENT FOR DISTANTLY SUPPORTING THE UPPER WORKING ROLLER
CN1047967C (en) * 1992-12-30 2000-01-05 Sms舒路曼-斯玛公司 Apparatus for pressing of cleaning roller of rolling mill
DE4314472A1 (en) * 1993-05-03 1994-11-10 Schloemann Siemag Ag Bending block for bending the rolls of multi-roll stands
US5524470A (en) * 1994-03-24 1996-06-11 Italimplanti Of America, Inc. Plug mill bottom roll adjustment
FR2733171B1 (en) * 1995-04-19 1997-07-04 Clecim Sa LARGE OPENING ROLLER
DE10334682A1 (en) * 2003-07-30 2005-02-17 Sms Demag Ag rolling device
EP1772203A1 (en) * 2005-10-10 2007-04-11 VAI Industries (UK) Limited Roll bending device
DE102008035702A1 (en) * 2008-07-30 2010-02-04 Sms Siemag Aktiengesellschaft rolling device
DE102008049179A1 (en) 2008-09-26 2010-04-01 Sms Siemag Aktiengesellschaft rolling device
DE102009058876A1 (en) * 2009-01-23 2010-07-29 Sms Siemag Ag Bending and balancing device for axially displaceable work rolls of a roll stand
DE102009060642A1 (en) * 2009-07-07 2011-01-13 Sms Siemag Ag 4-roll - / - rolls / 18HS roll rolling mill in cassette construction
US9120134B2 (en) * 2011-10-26 2015-09-01 I2S, Llc Methods of shifting and bending rolls in a rolling mill
ITMI20120598A1 (en) * 2012-04-12 2013-10-13 Danieli Off Mecc INTEGRATED BENDING AND BALANCING SYSTEM FOR LAMINATION CAGES
CN103801561B (en) * 2014-01-18 2016-04-20 肇庆宏旺金属实业有限公司 Working roll positioner
IT201900000713A1 (en) * 2019-01-17 2020-07-17 Danieli Off Mecc BENDING AND SHIFTING SYSTEM FOR ROLLING CAGES
CN111054760B (en) * 2019-12-09 2021-11-23 安徽工业大学 Vibration suppression device for rolling mill

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Also Published As

Publication number Publication date
US4967582A (en) 1990-11-06
DE58903588D1 (en) 1993-04-01
ES2038798T3 (en) 1993-08-01
DE3815454A1 (en) 1989-11-16
EP0340504A2 (en) 1989-11-08
ATE85912T1 (en) 1993-03-15
EP0340504A3 (en) 1990-06-06

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