EP3883703B1 - Quickly changeable rolling stand - Google Patents

Quickly changeable rolling stand Download PDF

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Publication number
EP3883703B1
EP3883703B1 EP19809013.6A EP19809013A EP3883703B1 EP 3883703 B1 EP3883703 B1 EP 3883703B1 EP 19809013 A EP19809013 A EP 19809013A EP 3883703 B1 EP3883703 B1 EP 3883703B1
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EP
European Patent Office
Prior art keywords
roll stand
rolling
maintenance
cable drag
cable
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.)
Active
Application number
EP19809013.6A
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German (de)
French (fr)
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EP3883703A1 (en
Inventor
Bodo Vieland
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SMS Group GmbH
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SMS Group GmbH
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Publication date
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Publication of EP3883703A1 publication Critical patent/EP3883703A1/en
Application granted granted Critical
Publication of EP3883703B1 publication Critical patent/EP3883703B1/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
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
    • B21B17/10—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills in a continuous process

Definitions

  • the invention relates to an interchangeable rolling stand for a rolling installation, preferably for rolling cylindrical rolling stock such as rods, seamless tubes and/or wires, which can be moved along a maintenance direction between a working position and a maintenance position.
  • stretch-reducing and/or sizing mills which have several rolling stands arranged one behind the other in the conveying direction of the rolling stock.
  • the roll stands usually have three rolls which are arranged symmetrically around the cylindrical rolling stock at angular intervals of 120°.
  • constructions with fewer or more rolls per roll stand are also known.
  • the WO 2017/068533 A1 describes a rolling mill with a first section, which has several roll stands and is set up for rolling over a mandrel introduced into the tube, and a second section, which has several roll stands and is set up for rolling without a mandrel.
  • the roll stands each have three rolls.
  • Rolling mills for rolling metal rods and wires with a plurality of roll stands arranged on a rolling line are also disclosed, for example, in US Pat DE 38 30 101 A1 which forms the basis for the preamble of claim 1, DE 39 40 736 A1 , DE 100 15 285 A1 such as DE 101 08 418 A1 described.
  • All or some rolling stands of a rolling train can be set up to be exchangeable in order to service them outside of the rolling train.
  • a change in the dimensions to be rolled requires the relevant ones to be moved out Rolling mills from the rolling train or is thereby at least made considerably easier. This applies in particular to the last roll stands, seen in the rolling direction, since these, as “finishing roll stands”, may have to cover a large product range. Frequent changes in dimensions are the rule here.
  • the fact that rolling stands can be replaced means that rolling operations can be maintained while rolling stands outside the rolling train are being prepared for use. In this way, interruptions in the rolling operation are kept to a minimum. According to the one cited above DE 100 15 285 A1 For this purpose, rolling stands are moved out of and into the rolling train via stand-changing carriages.
  • media couplings are prone to wear and failure. Repeatedly mating the contacts or needles on the media couplers can cause contact problems; for example, the needles can bend, dirt and liquids can get caught in the media couplings, and the like. This can directly lead to electrical faults or dropouts during operation.
  • Robust media couplings that are sealed against external influences, especially for hydraulic applications, are large and expensive. The elimination of any flow resistance also requires generous dimensioning.
  • the media couplings are often difficult to access if they are arranged, for example, below the coupling between the gearbox and the changing unit of the roll stand. Due to the separation of the media lines, the roll stands outside the rolling line are also electrically and hydraulically unconnected.
  • the JP 2013-068303 A describes a mounting structure for attaching a cable protector for protecting and guiding a cable to a movable member.
  • An object of the invention is to specify an improved interchangeable rolling stand for a rolling installation, preferably for rolling cylindrical rolling stock such as rods, seamless tubes and/or wires, which overcomes at least one of the technical problems set out above.
  • the interchangeable roll stand according to the invention is part of a rolling mill or is designed for such a mill.
  • the rolling mill is preferably set up for rolling cylindrical rolling stock, such as rods, seamless tubes and/or wires.
  • the roll stand preferably has at least two rolls. The rolls are preferably arranged symmetrically around the cylindrical stock to apply a rolling force to the outer periphery of the stock.
  • the rolling mill preferably has a number of interchangeable roll stands.
  • the rolling stock is transported through the rolling mill along the rolling direction on a route referred to below as the "rolling line".
  • the interchangeable roll stand can be moved between a working position and a maintenance position along at least one direction, which is referred to below as the “maintenance direction”.
  • the working position is accordingly on the rolling line, with the rolling stand being arranged in the working position in such a way that a rolling stock which is transported along the rolling line can be rolled by the rolls of the rolling stand.
  • the maintenance position is outside the rolling line. In the maintenance position can For example, maintenance work is carried out on the roll stand.
  • a change in the dimensions to be rolled for example when the roll stand is to be equipped with rolls of changed caliber cross-sections, requires the relevant roll stand to be moved out of the rolling line or is at least made considerably easier as a result.
  • finishing rolling stands may cover a large product range. Frequent changes in dimensions are the rule here. Because the roll stand can be replaced, rolling operations can be maintained while the roll stand is being prepared outside the rolling line for later use. In this way, interruptions in rolling operations can be kept to a minimum.
  • the roll stand has at least one media line, which transports a medium used for the operation of the roll stand, preferably electricity and/or a fluid.
  • media includes, for example, electricity for powering electric actuators of the roll stand and/or for exchanging sensor signals, fluids, such as oil and/or water, for supplying hydraulic actuators, for lubrication, cooling and the like.
  • the roll stand also has a cable towing device that is set up in such a way that the roll stand can be moved along the maintenance direction by the distance between the working position and the maintenance position without having to separate the media line from the roll stand.
  • the cable towing device allows the roll stand to be transferred from the working position on the rolling line to the maintenance position without the use of media couplings. If the roll stand has a media coupler, the media line can remain connected for maintenance, stand replacement, and the like, thereby improving its durability.
  • the electrical and/or hydraulic contacts are spared, none can Impurities, oil and dirt enter the media coupling, improving mill stand reliability both at start-up and during operation. In this way, potential sources of error are eliminated by the cable towing device.
  • the electrical and/or hydraulic and/or other functions are also available in the maintenance position of the roll stand. This makes it easier, for example, to preheat the roll stand outside the rolling line. Sensors such as rotary encoders, pressure transmitters, thermometers, etc., actuators and other electronic devices of the rolling mill do not have to be disconnected from the mains during maintenance or during changeover, which simplifies their restart.
  • the maintenance direction is preferably perpendicular to the rolling line, as a result of which the rolling stand can be moved in and out of the rolling line in a space-saving manner in a technically simple manner.
  • the rolling line is clearly defined not only by the rolling mill, but also by the structure of the rolling stand itself, in particular by the location of the rolls.
  • terms of the spatial relationship such as “above”, “below”, “horizontal”, etc., are clearly defined by the usual arrangement of a rolling mill and its roll stands.
  • the roll stand is preferably located on a drag plate, for example firmly connected, which can be moved in the horizontal plane at least along the maintenance direction.
  • the drag plate is a plate-shaped or frame-shaped beam that supports the roll stand in a movable manner.
  • the cable towing device is preferably located below the towing plate, for example in a shaft provided for this purpose.
  • the cable towing device can be installed below the hall floor in particular.
  • the chute preferably extends substantially along the pass line.
  • the relevant section of the shaft is at least partially covered by the drag plate. Outside the working position, the shaft can also be covered, for example by another towing plate or by a protective plate.
  • the drive motor of the roll stand can be mounted on the drag plate or coupled in the foundation, for example via a shaft / gear coupling.
  • the cable towing device preferably has a cable towing system, hereinafter referred to as “cable towing system in the maintenance direction”, which has a guide frame and at least one cable drag chain that can be rolled on the guide frame.
  • the cable drag chain is preferably made up of a number of chain links which are pivotably connected to one another.
  • the chain links have receiving sections that hold and guide the media line, allowing it to follow the winding and unwinding movement of the cable drag chain in a well-defined manner without kinking or tangling.
  • the maximum deflection radii to which the media line is exposed are determined by the dimensions and properties of the chain links and/or the properties of the cables running in them.
  • the rolling stand can also be moved along a changing direction that differs from the maintenance direction, for example perpendicular to it, with the cable towing device being set up in such a way that the rolling stand can be moved along the maintenance direction and the changing direction by the desired distance, without the Having to separate the media line from the roll stand.
  • the ability to move along a second direction, referred to here as "changing direction" enables or simplifies the exchange of roll stands.
  • the cable towing device preferably has a further cable towing system, which is referred to as an "inverted cable towing system".
  • this can also have a guide frame and at least one cable drag chain that can be rolled on the guide frame in the maintenance direction.
  • the cable drag chain of the cable drag system in the alternating direction is preferably made up of several Chain links constructed, which are pivotally connected to each other.
  • the chain links have receiving sections that hold and guide the media line, allowing it to follow the winding and unwinding movement of the cable drag chain in a well-defined manner without kinking or tangling.
  • the maximum deflection radii to which the media line is exposed are determined by the dimensions and properties of the chain links and/or the properties of the cables running in them.
  • the guide frame of the cable towing system is preferably firmly anchored in the alternating direction, for example in the shaft below the rolling stand
  • the guide frame of the cable towing system is mounted so that it can be moved in the maintenance direction, preferably in the direction of the rolling line, in order to compensate for a movement of the rolling stand along the changing direction.
  • the roll stand preferably has at least two media lines, one media line being an oil supply line and the other being an electrical line, preferably a power cable. Potentially unsafe interruptions in the power supply can be prevented by taking into account one or more electrical lines in the cable towing device.
  • the roll stand can be brought into an operating state or kept in such a state by means of a permanent oil supply "offline", i.e. outside the rolling line, for example kept at the right temperature. This means that the roll stand is ready for use more quickly.
  • the one or more media lines are preferably permanently connected to a section of the roll stand, "permanently” not meaning here that the media lines are in principle inseparably connected to the roll stand, but rather that no media couplings are required for frequent disconnection and release of the Media lines are designed, are available.
  • the cable dragging device described is also useful in connection with installed media couplings, since in this case the wear of the media couplings can be reduced and thus the service life of the same can be extended.
  • the figure 1 is a three-dimensional view showing a section of a roll stand outside the rolling train of a wire rod rolling plant and the connection to a cable towing device.
  • the figure 1 is a three-dimensional view showing a detail of a roll stand 10 outside the rolling train of a rolling mill 1 and the connection to a cable towing device 20.
  • the rolling plant 1 is a wire rod rolling plant, but it can also be a plant for rolling any cylindrical rolling stock, such as tubes or rods.
  • FIG figure 1 The technical details of the roll stand 10, in particular the construction and storage of the rolls, adjusting motors, etc., are in FIG figure 1 not shown, since the following is less about the rolling function and instead about the transport of the rolling stand 10 in and out of the rolling line and its media connection.
  • the roll stand 10 is located on a movable drag plate 11.
  • the drag plate 11 can be moved in a horizontal plane in a direction Wa at an angle, preferably perpendicular, to the rolling line via rollers, a rail system or in some other way.
  • the Wa direction is referred to herein as the "maintenance direction" because it indicates the direction from the pass line to a maintenance position (and back).
  • the roll stand 10 is in such a maintenance position outside the rolling line, on which maintenance of the roll stand 10, an exchange of rolls and the like can be carried out.
  • a roll stand 10' is shown which is in the working position, ie on the rolling line.
  • a drive motor of the roll stand 10 can be mounted on the drag plate 11 .
  • the drive motor can also be coupled in the foundation, for example via a shaft/curved gear coupling.
  • the drag plate 11 can preferably be moved not only in the maintenance direction Wa, but also outside the rolling line along a further direction We, preferably parallel to the rolling line. This further direction is referred to herein as "alternating direction".
  • This ability to move along the changing direction We enables or at least simplifies the replacement of the roll stand 10.
  • the roll stand 10 is connected to media lines 12 which transport media for the operation of the roll stand 10 .
  • the term "media” includes, for example, electricity for the power supply of electrical actuators and/or for the exchange of sensor signals, fluids such as oil and/or water for the supply of hydraulic actuators, for lubrication, cooling and the like.
  • the media lines 12 are preferably permanently connected to the roll stand 10, whereby “permanently” here does not mean that the media lines 12 are in principle inseparably connected to the roll stand 10, but rather that no media couplings, which are necessary for frequent disconnection and release of the media lines 12 are designed, are present.
  • the cable towing device 20 described below is also in connection with installed media couplings useful because in this case the wear of the media couplings can be reduced and thus the service life of the same can be extended.
  • the media lines 12 are held and guided by the cable towing device 20 .
  • the media lines 12 and the cable towing device 20 are set up in such a way that the roll stand 10 can be moved along the required distance along the maintenance direction Wa and optionally the alternating direction We without the media lines 12 having to be separated from the roll stand 10 .
  • the cable towing device 20 is preferably located below the hall floor 13 in a shaft 14 provided for this purpose, which extends below the rolling line essentially along the same.
  • the relevant section of the shaft 14 is covered by the drag plate 11. Outside of the working position, the shaft 14 can also be covered, for example by another drag plate 11 or by a protective plate.
  • the cable towing device 20 has a first cable towing system 30, also referred to as “cable towing system in the alternating direction”, and a second cable towing system 40, also referred to as “cable towing system in the maintenance direction", which are respectively used to realize the movement along the alternating direction We and the Maintenance direction Wa are set up.
  • the first cable drag system 30 has a guide frame 31 and one or more cable drag chains 32 .
  • the guide frame 31 is firmly anchored in the shaft 14, while the cable drag chain 32 can be rolled on the guide frame 31, ie along the alternating direction We.
  • the cable drag chain 32 has several chain links 33, which are similar to a bicycle chain are movably, in particular pivotably, connected to one another.
  • the chain links 33 have receiving sections 34 with openings through which the media lines 12 pass. In this way, the media lines 12 are held and guided by the cable drag chain 32, thereby following the rolling and unrolling movement of the same in a well-defined manner without becoming kinked or becoming tangled.
  • the deflection radii to which the media lines 12 are maximally exposed are determined by the dimensioning and nature of the chain links 33 and/or by the nature of the cables running therein.
  • the second cable drag system 40 is constructed similarly to the first cable drag system 30, wherein the unwinding direction of the cable drag chain 42 is perpendicular to the unwinding direction of the cable drag chain 32 to realize the movement along the maintenance direction Wa.
  • the second cable drag system 40 has a guide frame 41 and one or more cable drag chains 42 .
  • the guide frame 41 is movably mounted in the shaft 14 in order to compensate for a movement of the roll stand 10 along the changing direction We.
  • the cable drag chain 42 can be rolled on the guide frame 41, i.e. along the maintenance direction Wa.
  • the cable drag chain 42 has, as in the case of the first cable drag system 30, a plurality of chain links 43 which are movably, in particular pivotably, connected to one another in a manner similar to a bicycle chain. Furthermore, the chain links 43 have receiving sections 44 with openings through which the media lines 12 pass. In this way, the media lines 12 are supported and guided by the cable drag chain 42, thereby following the rolling and unrolling movement of the same in a well-defined manner without becoming kinked or tangling.
  • the maximum deflection radii to which the media lines 12 are exposed are determined by the dimensioning and nature of the chain links 43 and/or by the nature of the cables running therein.
  • the cable towing systems 30 and 40 can also be implemented in other technical ways.
  • the guide frames 31, 41 interact with corresponding carriages which Holding / leading media lines 12 and are movably mounted by means of a slide rail system or rollers.
  • the cable towing device 20 allows the rolling stand 10 to be transferred from the working position on the rolling line to a maintenance or replacement position without media couplings. If the mill stand 10 has media couplers, the media lines can remain coupled for maintenance or replacement of the mill stand 10, thereby improving their durability. Any electrical and hydraulic contacts are not affected, no dirt, oil and dirt penetrate into the media couplings, which improves the reliability of the roll stand 10 both during commissioning and during operation. Potential sources of error can be eliminated in this way. In addition, the electrical, hydraulic and/or other functions are also available in the maintenance or changing position of the roll stand 10 . This makes it easier, for example, to preheat the roll stand in the offline position. Sensors such as rotary encoders, pressure transmitters, thermometers, etc., actuators and other equipment of the roll stand 10 do not have to be taken off the grid during maintenance or during changeover, which simplifies their restarting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

Technisches Gebiettechnical field

Die Erfindung betrifft ein wechselbares Walzgerüst für eine Walzanlage, vorzugsweise zum Walzen von zylindrischen Walzgütern, wie etwa Stäben, nahtlosen Rohren und/oder Drähten, das entlang einer Wartungsrichtung zwischen einer Arbeitsposition und einer Wartungsposition verfahrbar ist.The invention relates to an interchangeable rolling stand for a rolling installation, preferably for rolling cylindrical rolling stock such as rods, seamless tubes and/or wires, which can be moved along a maintenance direction between a working position and a maintenance position.

Hintergrund der ErfindungBackground of the Invention

Bei der Herstellung zylindrischer Walzgüter, wie etwa Stäben, nahtlosen Rohren und Drähten, kommen Streckreduzier- und/oder Maßwalzwerke zum Einsatz, die mehrere in Förderrichtung des Walzguts hintereinander angeordnete Walzgerüste aufweisen. Die Walzgerüste weisen üblicherweise drei Walzen auf, die im Winkelabstand von 120° symmetrisch um das zylindrische Walzgut herum angeordnet sind. Es sind jedoch auch Konstruktionen mit weniger oder mehr Walzen pro Walzgerüst bekannt.In the production of cylindrical rolling stock, such as rods, seamless tubes and wires, stretch-reducing and/or sizing mills are used, which have several rolling stands arranged one behind the other in the conveying direction of the rolling stock. The roll stands usually have three rolls which are arranged symmetrically around the cylindrical rolling stock at angular intervals of 120°. However, constructions with fewer or more rolls per roll stand are also known.

Die WO 2017/068533 A1 beschreibt ein Walzwerk mit einem ersten Abschnitt, der mehrere Walzgerüste aufweist und für das Walzen über einen in das Rohr eingebrachten Dorn eingerichtet ist, und einem zweiten Abschnitt, der mehrere Walzgerüste aufweist und für das Walzen ohne Dorn eingerichtet ist. Die Walzgerüste weisen jeweils drei Walzen auf. Walzwerke zum Walzen metallischer Stäbe und Drähte mit mehreren auf einer Walzlinie angeordneten Walzgerüsten sind ferner beispielsweise in der DE 38 30 101 A1 , die die Basis für den Oberbegriff von Anspruch 1 darstellt, DE 39 40 736 A1 , DE 100 15 285 A1 sowie DE 101 08 418 A1 beschrieben.the WO 2017/068533 A1 describes a rolling mill with a first section, which has several roll stands and is set up for rolling over a mandrel introduced into the tube, and a second section, which has several roll stands and is set up for rolling without a mandrel. The roll stands each have three rolls. Rolling mills for rolling metal rods and wires with a plurality of roll stands arranged on a rolling line are also disclosed, for example, in US Pat DE 38 30 101 A1 which forms the basis for the preamble of claim 1, DE 39 40 736 A1 , DE 100 15 285 A1 such as DE 101 08 418 A1 described.

Alle oder einige Walzgerüste einer Walzstraße können auswechselbar eingerichtet sein, um diese außerhalb der Walzstraße zu warten. Auch eine Änderung der zu walzenden Abmessungen, etwa wenn ein Walzgerüst mit Walzen geänderter Kaliberquerschnitte zu bestücken ist, erfordert ein Herausfahren der betreffenden Walzgerüste aus der Walzstraße oder wird dadurch zumindest erheblich erleichtert. Dies gilt insbesondere für die letzten Walzgerüste, in Walzrichtung gesehen, da diese als "Fertigwalzgerüste" gegebenenfalls ein großes Produktspektrum abzudecken haben. Häufige Abmessungswechsel sind hierbei die Regel. Durch die Auswechselbarkeit von Walzgerüsten kann zudem der Walzbetrieb aufrechterhalten werden, während Walzgerüste außerhalb der Walzstraße für ihren Einsatz vorbereitet werden. Auf diese Weise werden Unterbrechungen des Walzbetriebs gering gehalten. Gemäß der oben zitierten DE 100 15 285 A1 werden Walzgerüste zu diesem Zweck über Gerüstwechselwagen aus der Walzstraße hinaus und in diese hinein gefahren.All or some rolling stands of a rolling train can be set up to be exchangeable in order to service them outside of the rolling train. A change in the dimensions to be rolled, for example when a roll stand is to be equipped with rolls of different caliber cross-sections, requires the relevant ones to be moved out Rolling mills from the rolling train or is thereby at least made considerably easier. This applies in particular to the last roll stands, seen in the rolling direction, since these, as “finishing roll stands”, may have to cover a large product range. Frequent changes in dimensions are the rule here. The fact that rolling stands can be replaced means that rolling operations can be maintained while rolling stands outside the rolling train are being prepared for use. In this way, interruptions in the rolling operation are kept to a minimum. According to the one cited above DE 100 15 285 A1 For this purpose, rolling stands are moved out of and into the rolling train via stand-changing carriages.

Zum Ausfahren eines Walzgerüsts aus der Walzstraße ist es erforderlich, die für die Steuerung und den Betrieb des Walzgerüstes erforderlichen Medienzuleitungen, etwa für den Betrieb der Hydraulik, der Elektrik, für die Schmierung sowie Wasser- und Luftversorgung, über Medienkupplungen vom Walzgerüst zu trennen und nach der Wartung oder dem Walzenwechsel wieder mit dem Walzgerüst zu verbinden.In order to extend a roll stand from the rolling train, it is necessary to separate the media supply lines required for the control and operation of the roll stand, for example for the operation of the hydraulics, the electrics, for the lubrication as well as the water and air supply, via media couplings from the roll stand and after to be reconnected to the roll stand after maintenance or roll changes.

Allerdings sind Medienkupplungen verschleiß- und fehleranfällig. Das wiederholte Kuppeln der Kontakte oder Nadeln an den Medienkupplungen kann zu Kontaktproblemen führen; beispielsweise können sich die Nadeln verbiegen, es können sich Schmutz und Flüssigkeiten in den Medienkupplungen verfangen und dergleichen. Dies kann unmittelbar zu elektrischen Störungen oder auch Aussetzern während des Betriebs führen. Robuste Medienkupplungen, die gegen äußere Einflüsse abgedichtet sind, insbesondere für hydraulische Anwendungen, sind groß und teuer. Die Beseitigung etwaiger Fließwiderstände erfordert ebenfalls eine großzügige Dimensionierung. Es kommt hinzu, dass die Medienkupplungen oft nur schwer zugänglich sind, wenn sie beispielsweise unterhalb der Kopplung zwischen Getriebe und Wechseleinheit des Walzgerüsts angeordnet sind. Durch die Trennung der Medienleitungen sind die Walzgerüste außerhalb der Walzlinie zudem elektrisch und hydraulisch ohne Anbindung. Dies führt zum einen dazu, dass eine Vorwärmung des Walzgerüsts außerhalb der Walzlinie besondere technische Maßnahmen erfordert. Zum anderen können beispielsweise Drehgeber von Anstellmotoren ihre Position verlieren, wenn die Spannung wegfällt. Somit ist die Wiederinbetriebnahme des Walzgerüsts nach einer Wartung oder einem Wechsel mit einem nicht unerheblichen Aufwand verbunden.However, media couplings are prone to wear and failure. Repeatedly mating the contacts or needles on the media couplers can cause contact problems; for example, the needles can bend, dirt and liquids can get caught in the media couplings, and the like. This can directly lead to electrical faults or dropouts during operation. Robust media couplings that are sealed against external influences, especially for hydraulic applications, are large and expensive. The elimination of any flow resistance also requires generous dimensioning. In addition, the media couplings are often difficult to access if they are arranged, for example, below the coupling between the gearbox and the changing unit of the roll stand. Due to the separation of the media lines, the roll stands outside the rolling line are also electrically and hydraulically unconnected. On the one hand, this means that preheating the roll stand outside of the rolling line requires special technical measures. On the other hand, for example, rotary encoders of adjustment motors can lose their position if the voltage is lost. Thus, the restart of the roll stand after maintenance or a change involves a not inconsiderable amount of effort.

Die JP 2013-068303 A beschreibt eine Montagestruktur zur Befestigung eines Kabelschutzes zum Schutz und zur Führung eines Kabels an einem beweglichen Element.the JP 2013-068303 A describes a mounting structure for attaching a cable protector for protecting and guiding a cable to a movable member.

Darstellung der ErfindungPresentation of the invention

Eine Aufgabe der Erfindung besteht darin, ein verbessertes wechselbares Walzgerüst für eine Walzanlage, vorzugsweise zum Walzen von zylindrischen Walzgütern, wie etwa Stäben, nahtlosen Rohren und/oder Drähten, anzugeben, das zumindest eines der oben dargelegten technischen Probleme überwindet.An object of the invention is to specify an improved interchangeable rolling stand for a rolling installation, preferably for rolling cylindrical rolling stock such as rods, seamless tubes and/or wires, which overcomes at least one of the technical problems set out above.

Gelöst wird die Aufgabe mit einem wechselbaren Walzgerüst mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen folgen aus den Unteransprüchen, der folgenden allgemeinen Darstellung der Erfindung sowie der Beschreibung bevorzugter Auführungsbeispiele.The object is achieved with an interchangeable roll stand with the features of claim 1. Advantageous further developments follow from the dependent claims, the following general description of the invention and the description of preferred exemplary embodiments.

Das wechselbare Walzgerüst gemäß der Erfindung ist Teil einer Walzanlage oder für eine solche ausgelegt. Die Walzanlage ist vorzugsweise zum Walzen von zylindrischen Walzgütern, wie etwa Stäben, nahtlosen Rohren und/oder Drähten, eingerichtet. Das Walzgerüst weist vorzugsweise mindestens zwei Walzen auf. Die Walzen sind vorzugsweise symmetrisch um das zylindrische Walzgut herum angeordnet, um eine Walzkraft auf den Außenumfang des Walzgutes auszuüben. Die Walzanlage weist vorzugsweise mehrere wechselbare Walzgerüste auf. Der Transport des Walzgutes durch die Walzanlage erfolgt entlang der Walzrichtung auf einem im Weiteren als "Walzlinie" bezeichneten Weg.The interchangeable roll stand according to the invention is part of a rolling mill or is designed for such a mill. The rolling mill is preferably set up for rolling cylindrical rolling stock, such as rods, seamless tubes and/or wires. The roll stand preferably has at least two rolls. The rolls are preferably arranged symmetrically around the cylindrical stock to apply a rolling force to the outer periphery of the stock. The rolling mill preferably has a number of interchangeable roll stands. The rolling stock is transported through the rolling mill along the rolling direction on a route referred to below as the "rolling line".

Gemäß der Erfindung ist das wechselbare Walzgerüst entlang zumindest einer Richtung, die im Weiteren als "Wartungsrichtung" bezeichnet ist, zwischen einer Arbeitsposition und einer Wartungsposition verfahrbar. Die Arbeitsposition befindet sich demnach auf der Walzlinie, wobei das Walzgerüst in der Arbeitsposition so angeordnet ist, dass ein Walzgut, das entlang der Walzlinie transportiert wird, durch die Walzen des Walzgerüsts gewalzt werden kann. Demgegenüber befindet sich die Wartungsposition außerhalb der Walzlinie. In der Wartungsposition können beispielsweise Wartungsarbeiten am Walzgerüst vorgenommen werden. Auch eine Änderung der zu walzenden Abmessungen, etwa wenn das Walzgerüst mit Walzen geänderter Kaliberquerschnitte zu bestücken ist, erfordert ein Herausfahren des betreffenden Walzgerüstes aus der Walzlinie oder wird dadurch zumindest erheblich erleichtert. Dies gilt insbesondere für die letzten Gerüste, in Walzrichtung gesehen, da diese als "Fertigwalzgerüste" gegebenenfalls ein großes Produktspektrum abdecken. Häufige Abmessungswechsel sind hierbei die Regel. Durch die Auswechselbarkeit des Walzgerüstes kann zudem der Walzbetrieb aufrechterhalten werden, während das Walzgerüst außerhalb der Walzlinie für einen späteren Einsatz vorbereitet wird. Auf diese Weise lassen sich Unterbrechungen des Walzbetriebs gering halten.According to the invention, the interchangeable roll stand can be moved between a working position and a maintenance position along at least one direction, which is referred to below as the “maintenance direction”. The working position is accordingly on the rolling line, with the rolling stand being arranged in the working position in such a way that a rolling stock which is transported along the rolling line can be rolled by the rolls of the rolling stand. In contrast, the maintenance position is outside the rolling line. In the maintenance position can For example, maintenance work is carried out on the roll stand. A change in the dimensions to be rolled, for example when the roll stand is to be equipped with rolls of changed caliber cross-sections, requires the relevant roll stand to be moved out of the rolling line or is at least made considerably easier as a result. This applies in particular to the last stands, seen in the rolling direction, since these, as "finishing rolling stands", may cover a large product range. Frequent changes in dimensions are the rule here. Because the roll stand can be replaced, rolling operations can be maintained while the roll stand is being prepared outside the rolling line for later use. In this way, interruptions in rolling operations can be kept to a minimum.

Erfindungsgemäß weist das Walzgerüst zumindest eine Medienleitung auf, die ein für den Betrieb des Walzgerüsts genutztes Medium, vorzugsweise Elektrizität und/oder ein Fluid, transportiert. Die Bezeichnung "Medien" umfasst beispielsweise Elektrizität zur Leistungsversorgung von elektrischen Aktoren des Walzgerüsts und/oder für den Austausch von Sensorsignalen, Fluide, wie etwa Öl und/oder Wasser, zur Versorgung von hydraulischen Aktoren, zur Schmierung, Kühlung und dergleichen. Es sei darauf hingewiesen, dass die hierin beschriebenen Merkmale, technischen Eigenschaften und Wirkungen gleichermaßen für den Fall mehrerer Medienleitungen gelten, auch wenn der sprachlichen Einfachheit halber zumeist der Singular verwendet wird.According to the invention, the roll stand has at least one media line, which transports a medium used for the operation of the roll stand, preferably electricity and/or a fluid. The term "media" includes, for example, electricity for powering electric actuators of the roll stand and/or for exchanging sensor signals, fluids, such as oil and/or water, for supplying hydraulic actuators, for lubrication, cooling and the like. It should be noted that the features, technical properties and effects described herein apply equally to the case of multiple media lines, even if the singular is mostly used for the sake of linguistic simplicity.

Das Walzgerüst weist gemäß der Erfindung ferner eine Kabelschleppvorrichtung auf, die so eingerichtet ist, dass das Walzgerüst entlang der Wartungsrichtung um die Wegstrecke zwischen der Arbeitsposition und der Wartungsposition verfahrbar ist, ohne die Medienleitung vom Walzgerüst trennen zu müssen.According to the invention, the roll stand also has a cable towing device that is set up in such a way that the roll stand can be moved along the maintenance direction by the distance between the working position and the maintenance position without having to separate the media line from the roll stand.

Durch die Kabelschleppvorrichtung kann das Walzgerüst ohne die Verwendung von Medienkupplungen aus der Arbeitsposition auf der Walzlinie in die Wartungsposition überführt werden. Weist das Walzgerüst eine Medienkupplung auf, kann die Medienleitung für eine Wartung, einen Austausch des Walzgerüstes und dergleichen gekuppelt bleiben, wodurch deren Haltbarkeit verbessert wird. Die elektrischen und/oder hydraulischen Kontaktierungen werden geschont, es können keine Verunreinigungen, Öl und Schmutz, in die Medienkupplung eintreten, wodurch die Zuverlässigkeit des Walzgerüsts sowohl bei der Inbetriebnahme als auch während des Betriebs verbessert wird. Auf diese Weise werden potentielle Fehlerquellen durch die Kabelschleppvorrichtung beseitigt. Zudem stehen auch in der Wartungsposition des Walzgerüsts die elektrischen und/oder hydraulischen und/oder weiteren Funktionen (Schmierung, Kühlung, Heizung usw.) zur Verfügung. Dies erleichtert beispielsweise ein Vorwärmen des Walzgerüsts außerhalb der Walzlinie. Sensoren, wie etwa Drehgeber, Druckgeber, Thermometer usw., Aktoren und andere elektronische Einrichtungen des Walzgerüsts müssen während der Wartung oder während des Wechsels nicht vom Netz genommen werden, wodurch deren Wiederinbetriebnahme vereinfacht wird.The cable towing device allows the roll stand to be transferred from the working position on the rolling line to the maintenance position without the use of media couplings. If the roll stand has a media coupler, the media line can remain connected for maintenance, stand replacement, and the like, thereby improving its durability. The electrical and/or hydraulic contacts are spared, none can Impurities, oil and dirt enter the media coupling, improving mill stand reliability both at start-up and during operation. In this way, potential sources of error are eliminated by the cable towing device. In addition, the electrical and/or hydraulic and/or other functions (lubrication, cooling, heating, etc.) are also available in the maintenance position of the roll stand. This makes it easier, for example, to preheat the roll stand outside the rolling line. Sensors such as rotary encoders, pressure transmitters, thermometers, etc., actuators and other electronic devices of the rolling mill do not have to be disconnected from the mains during maintenance or during changeover, which simplifies their restart.

Vorzugsweise steht die Wartungsrichtung senkrecht auf der Walzlinie, wodurch ein platzsparendes Ein- und Ausfahren des Walzgerüsts in und aus der Walzlinie auf technisch einfache Weise realisierbar ist. Es sei darauf hingewiesen, dass die Walzlinie nicht nur durch die Walzanlage, sondern auch durch den Aufbau des Walzgerüsts selbst, insbesondere durch die Lage der Walzen, klar definiert ist. Ebenso sind Bezeichnungen der räumlichen Beziehung, wie etwa "oben", "unten", "horizontal" usw., durch die übliche Anordnung einer Walzanlage sowie deren Walzgerüste klar definiert.The maintenance direction is preferably perpendicular to the rolling line, as a result of which the rolling stand can be moved in and out of the rolling line in a space-saving manner in a technically simple manner. It should be noted that the rolling line is clearly defined not only by the rolling mill, but also by the structure of the rolling stand itself, in particular by the location of the rolls. Likewise, terms of the spatial relationship, such as "above", "below", "horizontal", etc., are clearly defined by the usual arrangement of a rolling mill and its roll stands.

Vorzugsweise befindet sich das Walzgerüst auf einer Schleppplatte, beispielsweise fest verbunden, die in horizontaler Ebene zumindest entlang der Wartungsrichtung verfahrbar ist. Die Schleppplatte ist ein plattenförmiger oder rahmenförmiger Träger, der das Walzgerüst auf verfahrbare Weise trägt. Die Kabelschleppvorrichtung befindet sich in der Arbeitsposition des Walzgerüsts vorzugsweise unterhalb der Schleppplatte, beispielsweise in einem dafür vorgesehenen Schacht. Die Kabelschleppvorrichtung kann aus Platzgründen insbesondere unterhalb des Hallenbodens installiert sein. Der Schacht erstreckt sich vorzugsweise im Wesentlichen entlang der Walzlinie. In der Arbeitsposition des Walzgerüsts wird in diesem Fall der betreffende Abschnitt des Schachts von der Schleppplatte zumindest teilweise abgedeckt. Außerhalb der Arbeitsposition kann der Schacht ebenfalls abgedeckt werden, etwa durch eine andere Schleppplatte oder durch eine Schutzplatte. Der Antriebsmotor des Walzgerüsts kann auf der Schleppplatte montiert sein oder im Fundament angekuppelt werden, beispielsweise über eine Welle-/Bogenzahnkupplung.The roll stand is preferably located on a drag plate, for example firmly connected, which can be moved in the horizontal plane at least along the maintenance direction. The drag plate is a plate-shaped or frame-shaped beam that supports the roll stand in a movable manner. In the working position of the roll stand, the cable towing device is preferably located below the towing plate, for example in a shaft provided for this purpose. For reasons of space, the cable towing device can be installed below the hall floor in particular. The chute preferably extends substantially along the pass line. In this case, when the roll stand is in the working position, the relevant section of the shaft is at least partially covered by the drag plate. Outside the working position, the shaft can also be covered, for example by another towing plate or by a protective plate. The drive motor of the roll stand can be mounted on the drag plate or coupled in the foundation, for example via a shaft / gear coupling.

Vorzugsweise weist die Kabelschleppvorrichtung ein Kabelschleppsystem, im Weiteren als "Kabelschleppsystem in Wartungsrichtung" bezeichnet, auf, das ein Führungsgestell und zumindest eine Kabelschleppkette, die auf dem Führungsgestell abrollbar ist, aufweist. Die Kabelschleppkette ist vorzugsweise aus mehreren Kettengliedern aufgebaut, die schwenkbar miteinander verbunden sind. Die Kettenglieder weisen Aufnahmeabschnitte auf, welche die Medienleitung halten und führen, wodurch diese der Auf- und Abrollbewegung der Kabelschleppkette auf wohldefinierte Weise folgt, ohne geknickt zu werden oder sich zu verheddern. Die Umlenkradien, denen die Medienleitung maximal ausgesetzt ist, werden durch die Dimensionierung und Beschaffenheit der Kettenglieder und/oder von der Beschaffenheit der darin verlaufenden Kabel bestimmt.The cable towing device preferably has a cable towing system, hereinafter referred to as “cable towing system in the maintenance direction”, which has a guide frame and at least one cable drag chain that can be rolled on the guide frame. The cable drag chain is preferably made up of a number of chain links which are pivotably connected to one another. The chain links have receiving sections that hold and guide the media line, allowing it to follow the winding and unwinding movement of the cable drag chain in a well-defined manner without kinking or tangling. The maximum deflection radii to which the media line is exposed are determined by the dimensions and properties of the chain links and/or the properties of the cables running in them.

Vorzugsweise ist das Walzgerüst ferner entlang einer Wechselrichtung, die sich von der Wartungsrichtung unterscheidet, beispielsweise senkrecht auf dieser steht, verfahrbar, wobei die Kabelschleppvorrichtung hierbei so eingerichtet ist, dass das Walzgerüst entlang der Wartungsrichtung sowie der Wechselrichtung um die gewünschte Wegstrecke verfahrbar ist, ohne die Medienleitung vom Walzgerüst trennen zu müssen. Die Verfahrbarkeit entlang einer zweiten, hier als "Wechselrichtung" bezeichneten Richtung ermöglicht oder vereinfacht den Austausch von Walzgerüsten.Preferably, the rolling stand can also be moved along a changing direction that differs from the maintenance direction, for example perpendicular to it, with the cable towing device being set up in such a way that the rolling stand can be moved along the maintenance direction and the changing direction by the desired distance, without the Having to separate the media line from the roll stand. The ability to move along a second direction, referred to here as "changing direction", enables or simplifies the exchange of roll stands.

Vorzugsweise weist die Kabelschleppvorrichtung für diesen Fall ein weiteres Kabelschleppsystem auf, das als "Kabelschleppsystem in Wechselrichtung" bezeichnet ist. Dieses kann wie das Kabelschleppsystem in Wartungsrichtung ebenfalls ein Führungsgestell und zumindest eine Kabelschleppkette, die auf dem Führungsgestell abrollbar ist, aufweisen. Die Kabelschleppkette des Kabelschleppsystems in Wechselrichtung ist vorzugsweise aus mehreren Kettengliedern aufgebaut, die schwenkbar miteinander verbunden sind. Die Kettenglieder weisen Aufnahmeabschnitte auf, welche die Medienleitung halten und führen, wodurch diese der Auf- und Abrollbewegung der Kabelschleppkette auf wohldefinierte Weise folgt, ohne geknickt zu werden oder sich zu verheddern. Die Umlenkradien, denen die Medienleitung maximal ausgesetzt ist, werden durch die Dimensionierung und Beschaffenheit der Kettenglieder und/oder von der Beschaffenheit der darin verlaufenden Kabel bestimmt.In this case, the cable towing device preferably has a further cable towing system, which is referred to as an "inverted cable towing system". Like the cable drag system, this can also have a guide frame and at least one cable drag chain that can be rolled on the guide frame in the maintenance direction. The cable drag chain of the cable drag system in the alternating direction is preferably made up of several Chain links constructed, which are pivotally connected to each other. The chain links have receiving sections that hold and guide the media line, allowing it to follow the winding and unwinding movement of the cable drag chain in a well-defined manner without kinking or tangling. The maximum deflection radii to which the media line is exposed are determined by the dimensions and properties of the chain links and/or the properties of the cables running in them.

Während das Führungsgestell des Kabelschleppsystems in Wechselrichtung vorzugsweise fest verankert ist, beispielsweise im Schacht unterhalb des Walzgerüsts, ist das Führungsgestell des Kabelschleppsystems in Wartungsrichtung vorzugsweise in Richtung der Walzlinie verfahrbar montiert, um eine Bewegung des Walzgerüsts entlang der Wechselrichtung zu kompensieren.While the guide frame of the cable towing system is preferably firmly anchored in the alternating direction, for example in the shaft below the rolling stand, the guide frame of the cable towing system is mounted so that it can be moved in the maintenance direction, preferably in the direction of the rolling line, in order to compensate for a movement of the rolling stand along the changing direction.

Vorzugsweise weist das Walzgerüst zumindest zwei Medienleitungen auf, wobei eine Medienleitung eine Ölversorgungsleitung und die andere eine elektrische Leitung, vorzugsweise ein Leistungskabel, ist. Durch die Berücksichtigung einer oder mehrerer elektrischen Leitungen in der Kabelschleppvorrichtung können potentiell unsichere Unterbrechungen der Stromversorgung unterbunden werden. Zudem kann das Walzgerüst durch eine permanente Ölversorgung "Offline", d.h. außerhalb der Walzlinie, in einen Betriebszustand überführt oder in einem solchen gehalten werden, beispielsweise auf Temperatur gehalten werden. So ist das Walzgerüst schneller einsatzbereit.The roll stand preferably has at least two media lines, one media line being an oil supply line and the other being an electrical line, preferably a power cable. Potentially unsafe interruptions in the power supply can be prevented by taking into account one or more electrical lines in the cable towing device. In addition, the roll stand can be brought into an operating state or kept in such a state by means of a permanent oil supply "offline", i.e. outside the rolling line, for example kept at the right temperature. This means that the roll stand is ready for use more quickly.

Die eine oder die mehreren Medienleitungen sind vorzugsweise permanent mit einem Abschnitt des Walzgerüsts verbunden, wobei mit "permanent" hierbei nicht gemeint ist, dass die Medienleitungen prinzipiell untrennbar mit dem Walzgerüst verbunden sind, sondern dass keine Medienkupplungen, die für ein häufiges Trennen und Lösen der Medienleitungen ausgelegt sind, vorhanden sind. Andererseits ist die beschriebene Kabelschleppvorrichtung auch in Verbindung mit installierten Medienkupplungen nützlich, da in diesem Fall der Verschleiß der Medienkupplungen reduziert und somit die Lebensdauer derselben verlängert werden kann.The one or more media lines are preferably permanently connected to a section of the roll stand, "permanently" not meaning here that the media lines are in principle inseparably connected to the roll stand, but rather that no media couplings are required for frequent disconnection and release of the Media lines are designed, are available. On the other hand, the cable dragging device described is also useful in connection with installed media couplings, since in this case the wear of the media couplings can be reduced and thus the service life of the same can be extended.

Weitere Vorteile und Merkmale der vorliegenden Erfindung sind aus der folgenden Beschreibung bevorzugter Ausführungsbeispiele ersichtlich. Die dort beschriebenen Merkmale können alleinstehend oder in Kombination mit einem oder mehreren der oben dargelegten Merkmale realisiert werden, insofern sich die Merkmale nicht widersprechen. Die folgende Beschreibung der bevorzugten Ausführungsbeispiele erfolgt mit Bezug auf die begleitende Zeichnung.Further advantages and features of the present invention can be seen from the following description of preferred exemplary embodiments. The features described there can be implemented on their own or in combination with one or more of the features set out above, insofar as the features do not contradict one another. The following description of the preferred embodiments is made with reference to the accompanying drawings.

Kurze Beschreibung der FigurBrief description of the character

Die Figur 1 ist eine dreidimensionale Ansicht, die Ausschnittsweise ein Walzgerüst außerhalb der Walzstraße einer Drahtwalzanlage, sowie die Anbindung an eine Kabelschleppvorrichtung zeigt.the figure 1 is a three-dimensional view showing a section of a roll stand outside the rolling train of a wire rod rolling plant and the connection to a cable towing device.

Detaillierte Beschreibung bevorzugter AusführungsbeispieleDetailed description of preferred embodiments

Im Folgenden werden bevorzugte Ausführungsbeispiele anhand der Figur beschrieben.Preferred exemplary embodiments are described below with reference to the figure.

Die Figur 1 ist eine dreidimensionale Ansicht, die Ausschnittsweise ein Walzgerüst 10 außerhalb der Walzstraße einer Walzanlage 1, sowie die Anbindung an eine Kabelschleppvorrichtung 20 zeigt.the figure 1 is a three-dimensional view showing a detail of a roll stand 10 outside the rolling train of a rolling mill 1 and the connection to a cable towing device 20.

Die Walzanlage 1 ist in der gezeigten Ausführungsform eine Drahtwalzanlage, sie kann jedoch auch eine Anlage zum Walzen jedweden zylindrischen Walzguts, etwa von Rohren oder Stäben, sein.In the embodiment shown, the rolling plant 1 is a wire rod rolling plant, but it can also be a plant for rolling any cylindrical rolling stock, such as tubes or rods.

Die technischen Details des Walzgerüsts 10, insbesondere der Aufbau sowie die Lagerung der Walzen, Anstellmotoren usw., sind in der Figur 1 nicht gezeigt, da es im Weiteren weniger um die Walzfunktion, stattdessen um den Transport des Walzgerüsts 10 in und aus der Walzlinie sowie dessen Medienanbindung geht.The technical details of the roll stand 10, in particular the construction and storage of the rolls, adjusting motors, etc., are in FIG figure 1 not shown, since the following is less about the rolling function and instead about the transport of the rolling stand 10 in and out of the rolling line and its media connection.

Das Walzgerüst 10 befindet sich auf einer verfahrbaren Schleppplatte 11. Die Schleppplatte 11 ist über Rollen, ein Schienensystem oder auf andere Weise in horizontaler Ebene, in einer Richtung Wa in einem Winkel, vorzugsweise senkrecht, zur Walzlinie verfahrbar. Die Richtung Wa wird hierin als "Wartungsrichtung" bezeichnet, da sie die Richtung aus der Walzlinie in eine Wartungsposition (und zurück) angibt. In der Figur 1 befindet sich das Walzgerüst 10 auf einer solchen Wartungsposition außerhalb der Walzlinie, auf der eine Wartung des Walzgerüsts 10, ein Austausch von Walzen und dergleichen durchführbar ist. Im Vergleich dazu ist im Hintergrund der Figur 1 ein Walzgerüst 10' gezeigt, das sich in der Arbeitsposition, d.h. auf der Walzlinie, befindet. Es sei darauf hingewiesen, dass ein Antriebsmotor des Walzgerüsts 10 auf der Schleppplatte 11 montiert sein kann. Alternativ kann der Antriebsmotor auch im Fundament angekuppelt werden, beispielsweise über eine Welle-/Bogenzahnkupplung.The roll stand 10 is located on a movable drag plate 11. The drag plate 11 can be moved in a horizontal plane in a direction Wa at an angle, preferably perpendicular, to the rolling line via rollers, a rail system or in some other way. The Wa direction is referred to herein as the "maintenance direction" because it indicates the direction from the pass line to a maintenance position (and back). In the figure 1 the roll stand 10 is in such a maintenance position outside the rolling line, on which maintenance of the roll stand 10, an exchange of rolls and the like can be carried out. In comparison, in the background is the figure 1 a roll stand 10' is shown which is in the working position, ie on the rolling line. It should be noted that a drive motor of the roll stand 10 can be mounted on the drag plate 11 . Alternatively, the drive motor can also be coupled in the foundation, for example via a shaft/curved gear coupling.

Vorzugsweise ist die Schleppplatte 11 nicht nur in der Wartungsrichtung Wa, sondern außerhalb der Walzlinie auch entlang einer weiteren Richtung We, vorzugsweise parallel zur Walzlinie, verfahrbar. Diese weitere Richtung wird hierin als "Wechselrichtung" bezeichnet. Die Verfahrbarkeit entlang der Wechselrichtung We ermöglicht oder vereinfacht zumindest den Austausch des Walzgerüstes 10.The drag plate 11 can preferably be moved not only in the maintenance direction Wa, but also outside the rolling line along a further direction We, preferably parallel to the rolling line. This further direction is referred to herein as "alternating direction". The ability to move along the changing direction We enables or at least simplifies the replacement of the roll stand 10.

Das Walzgerüst 10 ist mit Medienleitungen 12 verbunden, die Medien für den Betrieb des Walzgerüsts 10 transportieren. Die Bezeichnung "Medien" umfasst beispielsweise Elektrizität zur Leistungsversorgung von elektrischen Aktoren und/oder für den Austausch von Sensorsignalen, Fluide, wie etwa Öl und/oder Wasser, zur Versorgung von hydraulischen Aktoren, zur Schmierung, Kühlung und dergleichen. Die Medienleitungen 12 sind vorzugsweise permanent mit dem Walzgerüst 10 verbunden, wobei mit "permanent" hierbei nicht gemeint ist, dass die Medienleitungen 12 prinzipiell untrennbar mit dem Walzgerüst 10 verbunden sind, sondern dass keine Medienkupplungen, die für ein häufiges Trennen und Lösen der Medienleitungen 12 ausgelegt sind, vorhanden sind. Andererseits ist die im Weiteren beschriebene Kabelschleppvorrichtung 20 auch in Verbindung mit installierten Medienkupplungen nützlich, da in diesem Fall der Verschleiß der Medienkupplungen reduziert und somit die Lebensdauer derselben verlängert werden kann.The roll stand 10 is connected to media lines 12 which transport media for the operation of the roll stand 10 . The term "media" includes, for example, electricity for the power supply of electrical actuators and/or for the exchange of sensor signals, fluids such as oil and/or water for the supply of hydraulic actuators, for lubrication, cooling and the like. The media lines 12 are preferably permanently connected to the roll stand 10, whereby "permanently" here does not mean that the media lines 12 are in principle inseparably connected to the roll stand 10, but rather that no media couplings, which are necessary for frequent disconnection and release of the media lines 12 are designed, are present. On the other hand, the cable towing device 20 described below is also in connection with installed media couplings useful because in this case the wear of the media couplings can be reduced and thus the service life of the same can be extended.

Die Medienleitungen 12 werden durch die Kabelschleppvorrichtung 20 gehalten und geführt. Die Medienleitungen 12 sowie die Kabelschleppvorrichtung 20 sind hierbei so eingerichtet, dass das Walzgerüst 10 entlang der Wartungsrichtung Wa sowie gegebenenfalls der Wechselrichtung We um die erforderliche Wegstrecke verfahrbar ist, ohne dass die Medienleitungen 12 vom Walzgerüst 10 zu trennen sind. In anderen Worten, die Verfahrbarkeit des Walzgerüsts 10 über die Schleppplatte 11 entlang der Bewegungsrichtungen Wa, We muss durch die Kabelschleppvorrichtung 20 kompensierbar sein.The media lines 12 are held and guided by the cable towing device 20 . The media lines 12 and the cable towing device 20 are set up in such a way that the roll stand 10 can be moved along the required distance along the maintenance direction Wa and optionally the alternating direction We without the media lines 12 having to be separated from the roll stand 10 . In other words, it must be possible for the cable towing device 20 to compensate for the mobility of the roll stand 10 via the towing plate 11 along the directions of movement Wa, We.

Die Kabelschleppvorrichtung 20 befindet sich vorzugsweise unterhalb des Hallenbodens 13 in einem dafür vorgesehenen Schacht 14, der sich unterhalb der Walzlinie im Wesentlichen entlang derselben erstreckt. In der Arbeitsposition des Walzgerüsts 10 wird der betreffende Abschnitt des Schachts 14 von der Schleppplatte 11 abgedeckt. Außerhalb der Arbeitsposition kann der Schacht 14 ebenfalls abgedeckt werden, etwa durch eine andere Schleppplatte 11 oder durch eine Schutzplatte.The cable towing device 20 is preferably located below the hall floor 13 in a shaft 14 provided for this purpose, which extends below the rolling line essentially along the same. In the working position of the roll stand 10, the relevant section of the shaft 14 is covered by the drag plate 11. Outside of the working position, the shaft 14 can also be covered, for example by another drag plate 11 or by a protective plate.

Im vorliegenden Ausführungsbeispiel weist die Kabelschleppvorrichtung 20 ein erstes Kabelschleppsystem 30, auch als "Kabelschleppsystem in Wechselrichtung" bezeichnet, und ein zweites Kabelschleppsystem 40, auch als "Kabelschleppsystem in Wartungsrichtung" bezeichnet, auf, die entsprechend zur Realisierung der Bewegung entlang der Wechselrichtung We und der Wartungsrichtung Wa eingerichtet sind.In the present exemplary embodiment, the cable towing device 20 has a first cable towing system 30, also referred to as "cable towing system in the alternating direction", and a second cable towing system 40, also referred to as "cable towing system in the maintenance direction", which are respectively used to realize the movement along the alternating direction We and the Maintenance direction Wa are set up.

Das erste Kabelschleppsystem 30 weist ein Führungsgestell 31 und eine oder mehrere Kabelschleppketten 32 auf. Das Führungsgestell 31 ist fest im Schacht 14 verankert, während die Kabelschleppkette 32 auf dem Führungsgestell 31, d.h. entlang der Wechselrichtung We, abrollbar ist. Zu diesem Zweck weist die Kabelschleppkette 32 mehrere Kettenglieder 33 auf, die ähnlich einer Fahrradkette beweglich, insbesondere schwenkbar, miteinander verbunden sind. Ferner weisen die Kettenglieder 33 Aufnahmeabschnitte 34 mit Öffnungen auf, durch welche die Medienleitungen 12 treten. Auf diese Weise werden die Medienleitungen 12 durch die Kabelschleppkette 32 gehalten und geführt, wodurch sie der Auf- und Abrollbewegung derselben auf wohldefinierte Weise folgen, ohne geknickt zu werden oder sich zu verheddern. Die Umlenkradien, denen die Medienleitungen 12 maximal ausgesetzt sind, werden durch die Dimensionierung und Beschaffenheit der Kettenglieder 33 und/oder von der Beschaffenheit der darin verlaufenden Kabel bestimmt.The first cable drag system 30 has a guide frame 31 and one or more cable drag chains 32 . The guide frame 31 is firmly anchored in the shaft 14, while the cable drag chain 32 can be rolled on the guide frame 31, ie along the alternating direction We. For this purpose, the cable drag chain 32 has several chain links 33, which are similar to a bicycle chain are movably, in particular pivotably, connected to one another. Furthermore, the chain links 33 have receiving sections 34 with openings through which the media lines 12 pass. In this way, the media lines 12 are held and guided by the cable drag chain 32, thereby following the rolling and unrolling movement of the same in a well-defined manner without becoming kinked or becoming tangled. The deflection radii to which the media lines 12 are maximally exposed are determined by the dimensioning and nature of the chain links 33 and/or by the nature of the cables running therein.

Das zweite Kabelschleppsystem 40 ist ähnlich dem ersten Kabelschleppsystem 30 aufgebaut, wobei die Abrollrichtung der Kabelschleppkette 42 senkrecht auf der Abrollrichtung der Kabelschleppkette 32 steht, um die Bewegung entlang der Wartungsrichtung Wa zu realisieren. Das zweite Kabelschleppsystem 40 weist dazu ein Führungsgestell 41 und eine oder mehrere Kabelschleppketten 42 auf. Das Führungsgestell 41 ist verfahrbar im Schacht 14 montiert, um eine Bewegung des Walzgerüsts 10 entlang der Wechselrichtung We zu kompensieren. Die Kabelschleppkette 42 ist auf dem Führungsgestell 41, d.h. entlang der Wartungsrichtung Wa, abrollbar. Zu diesem Zweck weist die Kabelschleppkette 42 wie im Fall des ersten Kabelschleppsystems 30 mehrere Kettenglieder 43 auf, die ähnlich einer Fahrradkette beweglich, insbesondere schwenkbar, miteinander verbunden sind. Ferner weisen die Kettenglieder 43 Aufnahmeabschnitte 44 mit Öffnungen auf, durch welche die Medienleitungen 12 treten. Auf diese Weise werden die Medienleitungen 12 durch die Kabelschleppkette 42 gehalten und geführt, wodurch sie der Auf- und Abrollbewegung derselben auf wohldefinierte Weise folgen, ohne geknickt zu werden oder sich zu verheddern. Die Umlenkradien, denen die Medienleitungen 12 maximal ausgesetzt sind, werden durch die Dimensionierung und Beschaffenheit der Kettenglieder 43 und/oder von der Beschaffenheit der darin verlaufenden Kabel bestimmt.The second cable drag system 40 is constructed similarly to the first cable drag system 30, wherein the unwinding direction of the cable drag chain 42 is perpendicular to the unwinding direction of the cable drag chain 32 to realize the movement along the maintenance direction Wa. For this purpose, the second cable drag system 40 has a guide frame 41 and one or more cable drag chains 42 . The guide frame 41 is movably mounted in the shaft 14 in order to compensate for a movement of the roll stand 10 along the changing direction We. The cable drag chain 42 can be rolled on the guide frame 41, i.e. along the maintenance direction Wa. For this purpose, the cable drag chain 42 has, as in the case of the first cable drag system 30, a plurality of chain links 43 which are movably, in particular pivotably, connected to one another in a manner similar to a bicycle chain. Furthermore, the chain links 43 have receiving sections 44 with openings through which the media lines 12 pass. In this way, the media lines 12 are supported and guided by the cable drag chain 42, thereby following the rolling and unrolling movement of the same in a well-defined manner without becoming kinked or tangling. The maximum deflection radii to which the media lines 12 are exposed are determined by the dimensioning and nature of the chain links 43 and/or by the nature of the cables running therein.

Es sei darauf hingewiesen, dass die Kabelschleppsysteme 30 und 40 auch auf technische andere Weise realisierbar sind. Beispielsweise können die Führungsgestelle 31, 41 mit entsprechenden Schlitten zusammenwirken, welche die Medienleitungen 12 halten/führen und mittels eines Gleitschienensystems oder Rollen verfahrbar gelagert sind.It should be pointed out that the cable towing systems 30 and 40 can also be implemented in other technical ways. For example, the guide frames 31, 41 interact with corresponding carriages which Holding / leading media lines 12 and are movably mounted by means of a slide rail system or rollers.

Durch die Kabelschleppvorrichtung 20 kann das Walzgerüst 10 ohne Medienkupplungen aus der Arbeitsposition auf der Walzlinie in eine Wartungs- oder Auswechselposition überführt werden. Weist das Walzgerüst 10 Medienkupplungen auf, können die Medienleitungen für eine Wartung oder einen Austausch des Walzgerüstes 10 gekuppelt bleiben, wodurch deren Haltbarkeit verbessert wird. Etwaige elektrische und hydraulische Kontaktierungen werden nicht beeinträchtigt, es dringen keine Verunreinigungen, Öl und Schmutz, in die Medienkupplungen, wodurch die Zuverlässigkeit des Walzgerüsts 10 sowohl bei der Inbetriebnahme als auch während des Betriebs verbessert wird. Potentielle Fehlerquellen lassen sich auf diese Weise beseitigen. Zudem stehen auch in der Wartungs- oder Wechselposition des Walzgerüsts 10 die elektrischen, hydraulischen und/oder weiteren Funktionen zur Verfügung. Dies erleichtert beispielsweise ein Vorwärmen des Walzgerüsts in der Offline-Position. Sensoren, wie etwa Drehgeber, Druckgeber, Thermometer usw., Aktoren und andere Einrichtungen des Walzgerüsts 10 müssen während der Wartung oder während des Wechsels nicht vom Netz genommen werden, wodurch deren Wiederinbetriebnahme vereinfacht wird.The cable towing device 20 allows the rolling stand 10 to be transferred from the working position on the rolling line to a maintenance or replacement position without media couplings. If the mill stand 10 has media couplers, the media lines can remain coupled for maintenance or replacement of the mill stand 10, thereby improving their durability. Any electrical and hydraulic contacts are not affected, no dirt, oil and dirt penetrate into the media couplings, which improves the reliability of the roll stand 10 both during commissioning and during operation. Potential sources of error can be eliminated in this way. In addition, the electrical, hydraulic and/or other functions are also available in the maintenance or changing position of the roll stand 10 . This makes it easier, for example, to preheat the roll stand in the offline position. Sensors such as rotary encoders, pressure transmitters, thermometers, etc., actuators and other equipment of the roll stand 10 do not have to be taken off the grid during maintenance or during changeover, which simplifies their restarting.

Soweit anwendbar können alle einzelnen Merkmale, die in den Ausführungsbeispielen dargelegt sind, miteinander kombiniert und/oder ausgetauscht werden, ohne den durch die Ansprüche definierten Schutzumfang der Erfindung zu verlassen.As far as applicable, all individual features that are presented in the exemplary embodiments can be combined with one another and/or exchanged without departing from the protective scope of the invention defined by the claims.

BezugszeichenlisteReference List

11
Walzanlagerolling mill
1010
Walzgerüstmill stand
10'10'
Walzgerüstmill stand
1111
Schleppplattedrag plate
1212
Medienleitungmedia line
1313
Hallenbodenhall floor
1414
Schachtshaft
2020
Kabelschleppvorrichtungcable towing device
3030
Kabelschleppsystem in WechselrichtungCable drag system in reverse direction
3131
Führungsgestellguide frame
3232
Kabelschleppkettecable drag chain
3333
Kettengliedchain link
3434
Aufnahmeabschnittrecording section
4040
Kabelschleppsystem in WartungsrichtungCable drag system in maintenance direction
4141
Führungsgestellguide frame
4242
Kabelschleppkettecable drag chain
4343
Kettengliedchain link
4444
Aufnahmeabschnittrecording section
Wawha
Wartungsrichtungmaintenance direction
Wewe
Wechselrichtungchange direction

Claims (10)

  1. Exchangeable roll stand (10) for a rolling installation, preferably for rolling cylindrical rolling materials, such as, for example, rods, seamless tubes and/or wires, which stand is movable along a maintenance direction (Wa) between a work position and a maintenance position and comprises:
    at least one media line (12) which transports a medium, preferably electricity and/or a fluid,
    used for operation of the roll stand (10);
    characterised by
    a cable drag device (20) which is so arranged that the roll stand (10) is movable along the maintenance direction (Wa) over the distance between the work position and the maintenance position without the media line (12) separating from the roll stand (10).
  2. Roll stand (10) according to claim 1, characterised in that the maintenance direction (Wa) is perpendicular to the rolling line defined by the rolling installation.
  3. Roll stand (10) according to claim 1 or 2, characterised in that this is disposed on a drag plate (11), which is movable in horizontal plane at least along the maintenance direction (Wa), and the cable drag device (20) in the work position of the roll stand (10) is disposed below the drag plate (11), preferably in a shaft (14).
  4. Roll stand (10) according to any one of the preceding claims, characterised in that the cable drag device (20) comprises a cable drag system (40) in maintenance direction, which comprises a guide frame (41) and at least one cable drag chain (42), which can unwind on the guide frame (41).
  5. Roll stand (10) according to claim 4, characterised in that the cable drag chain (42) comprises a plurality of chain links (43), which are pivotably connected together and have receiving sections (44) which hold and guide the media line (12).
  6. Roll stand (10) according to any one of the preceding claims, characterised in that this is additionally movable along an exchange direction (We), which differs from the maintenance direction (Wa) and is preferably perpendicular thereto, and the cable drag device (20) is so arranged that the roll stand (10) is movable along the maintenance direction (Wa) as well as the exchange direction (We) without the media line (12) separating from the roll stand (10).
  7. roll stand (10) according to claim 6, characterised in that the cable drag device (20) comprises a cable drag system (30) in exchange direction, which comprises a guide frame (31) and at least one cable drag chain (32), which can unwind on the guide frame (31).
  8. Roll stand (10) according to claim 7, characterised in that the cable drag chain (32) of the cable drag system (30) in exchange direction comprises a plurality of chain links (33) which are pivotably connected together and have receiving sections (34) which hold and guide the media line (12).
  9. Roll stand (10) according to claim 4 and 7, characterised in that the cable drag system (40) in maintenance direction is movable relative to the cable drag system (30) in exchange direction, preferably parallel to the rolling line.
  10. Roll stand (10) according to any one of the preceding claims, characterised in that this comprises at least two media lines (12), wherein one media line (12) is an oil supply line and the other is an electrical line, preferably a power cable.
EP19809013.6A 2018-11-20 2019-11-19 Quickly changeable rolling stand Active EP3883703B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018219874.8A DE102018219874B4 (en) 2018-11-20 2018-11-20 Quick-change roll stand
PCT/EP2019/081737 WO2020104421A1 (en) 2018-11-20 2019-11-19 Quickly changeable rolling stand

Publications (2)

Publication Number Publication Date
EP3883703A1 EP3883703A1 (en) 2021-09-29
EP3883703B1 true EP3883703B1 (en) 2022-10-19

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ID=68655510

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Application Number Title Priority Date Filing Date
EP19809013.6A Active EP3883703B1 (en) 2018-11-20 2019-11-19 Quickly changeable rolling stand

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Country Link
EP (1) EP3883703B1 (en)
DE (1) DE102018219874B4 (en)
WO (1) WO2020104421A1 (en)

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE10103686A1 (en) * 2001-01-27 2002-08-01 Sms Demag Ag Rolling mill with staggered stands, especially a tandem rolling mill
DE10108418A1 (en) * 2001-02-21 2002-08-29 Sms Demag Ag Arrangement of the media supply lines and connecting lines that can be connected via coupling devices with media connections of the stands of rolling stands

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Publication number Priority date Publication date Assignee Title
DE3830101A1 (en) 1988-09-05 1990-03-15 Schloemann Siemag Ag METHOD FOR OPERATING A STEEL ROLLING MILL WITH A REFRIGERATION LINE ARRANGED ON A ROLLING LINE FOR THERMOMECHANICAL FINISHED ROLLS AND ROLLING STEEL ROLLING MILL FOR IMPLEMENTING THE METHOD
DE3940736A1 (en) 1989-12-09 1991-06-13 Schloemann Siemag Ag HIGH PERFORMANCE STEEL / WIRE ROAD
DE10015285C2 (en) 2000-03-28 2003-11-27 Kocks Technik Rolling mill for rolling metallic pipes, bars or wires
DE20016169U1 (en) * 2000-09-19 2001-03-15 Sms Demag Ag Media rail
US7718894B2 (en) * 2003-10-15 2010-05-18 Igus Gmbh Line guide device
DE102008049246B4 (en) * 2008-09-26 2014-12-31 Tsubaki Kabelschlepp GmbH Cable routing device and method for producing an element of a cable routing device
DE102009060237A1 (en) * 2009-12-23 2011-06-30 SMS Siemag AG, 40237 Rolling mill with a drive unit
JP5913883B2 (en) * 2011-09-26 2016-04-27 株式会社デンソーウェーブ Cable protection guide member mounting structure
ITUB20155314A1 (en) 2015-10-23 2017-04-23 Danieli Off Mecc MULTI-CHAMBER MILL FOR ASTIFORM BODIES INCLUDING THREE ROLLED CAGES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10103686A1 (en) * 2001-01-27 2002-08-01 Sms Demag Ag Rolling mill with staggered stands, especially a tandem rolling mill
DE10108418A1 (en) * 2001-02-21 2002-08-29 Sms Demag Ag Arrangement of the media supply lines and connecting lines that can be connected via coupling devices with media connections of the stands of rolling stands

Also Published As

Publication number Publication date
EP3883703A1 (en) 2021-09-29
DE102018219874A1 (en) 2020-05-20
WO2020104421A1 (en) 2020-05-28
DE102018219874B4 (en) 2020-08-20

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