EP0194656B1 - Metallstranggiessvorrichtung, insbesondere für Gussstränge aus Stahl - Google Patents

Metallstranggiessvorrichtung, insbesondere für Gussstränge aus Stahl Download PDF

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Publication number
EP0194656B1
EP0194656B1 EP86103274A EP86103274A EP0194656B1 EP 0194656 B1 EP0194656 B1 EP 0194656B1 EP 86103274 A EP86103274 A EP 86103274A EP 86103274 A EP86103274 A EP 86103274A EP 0194656 B1 EP0194656 B1 EP 0194656B1
Authority
EP
European Patent Office
Prior art keywords
support
frame
thickness
drive
casting device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86103274A
Other languages
German (de)
English (en)
French (fr)
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EP0194656A1 (de
Inventor
Dietmar Lohse
Dieter Kothe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to AT86103274T priority Critical patent/ATE38000T1/de
Publication of EP0194656A1 publication Critical patent/EP0194656A1/de
Application granted granted Critical
Publication of EP0194656B1 publication Critical patent/EP0194656B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing

Definitions

  • the invention relates to a continuous metal casting device, in particular for steel castings, with a guide frame following the continuous casting mold in the casting direction, which consists of individual segments, each segment having an upper and a lower support frame, several support rollers rotatably supported on each support frame and at least individual ones Back-up rollers are driven and opposing back-up frames can be adjusted to a back-up roller spacing corresponding to the thickness of the cast strand by means of hydraulic, double-actionable main adjustment drives, which can be acted upon in pairs and which are provided in pairs, to which auxiliary adjustment drives with mechanical adjustability for fine adjustment are assigned, the thickness distance using stops arranged on the guide frame is fixable.
  • Such known from the generic DE-A 15 08 859 guide frames with main adjustment and secondary adjustment drives are used to guide and transport starting strands at the start of casting and the transport of cast strands as well as straightening curved cast strands, whereby cast strands grow beyond their target thickness or shrink below their target thickness can.
  • the strand exerts a disproportionately high clamping force in curved strand guide frames. In such a case, the cast strand can only be removed from the guide frame by opening the affected segments.
  • the main adjustment drive can reduce the strand to the desired thickness if the target thickness is exceeded, but in this situation the secondary adjustment drive cannot be prevented from increasing the thickness spacing, so that the intended effects of the main adjustment drive are doubtful. It is disadvantageous to assign such a force to the main adjustment drive that excessively deforms the cast strand when bulging in front of the support rollers. In such cases there is a risk of permanent damage to the cast structure.
  • the secondary adjustment drive is at most able to advance the top roller when the target thickness is undershot. Such a control system is unsafe and creates unstable conditions in the management framework.
  • the object of the invention is to create an adjustment system which is rigid in every thickness setting and therefore safe and nevertheless sufficiently fast.
  • the secondary adjustment drive has a drivable threaded spindle as a support means, that the threaded spindle is guided in a threaded nut and in a bush, that the bush is fitted in the area of the stop within a bush housing fastened in the upper frame and that also Threaded nut is held in the bush housing.
  • a double-bearing threaded spindle is advantageously suitable for absorbing high supporting forces.
  • Such a threaded spindle can be driven by hand if necessary.
  • two pairs of the secondary adjustment drive are arranged on the upper frame of a segment and can be actuated synchronously by means of a common drive.
  • Such a drive arrangement allows the mechanical secondary according to the expansion of a segment frame to arrange actuators on the largest possible available area and thereby a desired parallel adjustment to the counter frame, z. B. to comply with the subframe.
  • a drive motor or a downstream countershaft can be driven by means of cardan shafts and two secondary adjustment drives in each case by means of a connecting shaft running parallel to the support rollers.
  • Such an arrangement has the advantage that the drive motor can also be set up on a pedestal outside the guide frame in order to promote the exchange of an individual guide segment.
  • a further improvement of the secondary adjustment drives is that the connecting shafts each drive on a worm gear, the worm wheel being fastened on the threaded spindle and the worm on the connecting shaft.
  • such a configuration has the advantage of a sufficiently large excess setzun g sdorf between the drive and the downstream countershaft and also may provide the threaded spindle.
  • the deliberate arrangement of the worm wheel on the support means, ie on the threaded spindle is synonymous with an existing resettability in the sense of an increase in the thickness spacing, without the pressing force transmitted through the cast strand to the respective support roller being able to cause an opening on its own (self-locking effect).
  • the support means according to the invention in its form as a threaded spindle can be arranged on the inside of the main adjustment drives and therefore requires special measures in the upper frame.
  • Such a completely separate arrangement of the main adjustment drive and the secondary adjustment drive is made possible in that the bush housing used in the upper support frame is made in two parts and a first part from below and a second part from above can be inserted and fastened to the upper support frame.
  • the assembly is further facilitated by the fact that in the first part of the two-part bush housing introduced from below, the threaded nut rests upward against a fixed shoulder. The threaded nut can therefore be easily replaced if worn.
  • the metal, in particular steel continuous casting device has a (curved) guide frame 1 (Fig. 1), the z. B. consists of three arranged on a bearing frame 2 segments 3.
  • the guide frame 1 is therefore divided into segments 3 in order to be able to replace a fully adjusted segment 3 in the event of failure of one or more of the support rollers 4.
  • Each segment 3 has an upper and a lower support frame 5a and 5b.
  • On each of the support frames 5a and 5b are several, for. B. six of the support rollers 4 are rotatably mounted and adjusted to the strand vein formed by the desired thickness of the cast strand 6, the .bend of the arc being taken into account in the exemplary embodiment. With a straight cast strand 6, the alignment is understandably easier because the support rollers 4 lie there on a straight line.
  • the segments 3 form complete units which are fastened to the bearing frame 2 by means of hydraulic tensioning devices 7.
  • Rotary drives (not shown) are provided for some of the support rollers 4, which are set up outside the guide frame 1. From these rotary drives, cardan shafts are guided on couplings on the pins of the support rollers 4.
  • the two opposing support frames 5a and 5b are set to a support roller spacing or thickness spacing 8 corresponding to the target thickness of the cast strand 6.
  • the adjustment is made via main adjustment drives 9, of which at least one pair is provided on each side next to the cast strand 6, with the hydraulic cylinder being fastened to the lower support frame 5b and the piston rod to the upper support frame 5a by means of a suitable joint in a hydraulic embodiment two pairs of main adjustment drives 9 are provided so that each upper support frame 5a is held on four piston rods.
  • the main adjustment drives 9 are expediently double-acting piston-cylinder units. It is of course possible to get by with only one pair of main adjustment drives 9.
  • Auxiliary adjustment drives 10 are located on the upper support frame 5a, the number of which may also vary (FIG. 1).
  • the secondary adjustment drives 10 are used for fine adjustment of the thickness spacing 8 for deviations from the target thickness of the cast strand 6.
  • FIG. 2 An enlarged representation of the main adjustment and secondary adjustment drives 9 and 10 is shown in FIG. 2.
  • the thickness spacing 8 is set by means of interchangeable stops 11, which rest on a frame part 12, which at the same time provides a protective housing 12a and 12b which prevents heat radiation the main actuators 9 forms and firmly with the lower support frame men 5b is connected.
  • the thickness surfaces of the cast strand 6 guiding plates 13a and 13b are fastened.
  • a secondary adjustment drive 10 is shown in more detail in FIGS. 3 and 4. It is located with its axis 14 parallel to the axis 15 of the main adjustment drive 9, the piston rod 9a of which is articulated in the upper support frame 5a by means of cross bolts 16.
  • the support means 17 is in contact with the stops 11 in all thickness settings. From this position it is possible to counteract an increase in the thickness of the cast strand 6 by giving in the piston rod 9a and by simultaneously (possibly differently) lowering the support means 17. As the strand thickness decreases, i.e. H. with a decreasing thickness spacing 8, the piston rod 9a and the support means 17 are adjusted accordingly downwards.
  • a fine adjustment in both directions 18a and 18b with the piston rod 9a fixed is made possible by the design of the support means 17 as a threaded spindle 19.
  • the threaded spindle 19 With the threaded part 20, the threaded spindle 19 is guided in a threaded nut 21 (FIG. 4) and in a bush 22. Both the threaded nut 21 and the bushing 22 are supported in a bush housing 23.
  • the bush housing 23 is formed from the parts 23a and 23b.
  • the first part 23a is inserted from below, the second part 23b from above into the upper support frame.
  • both parts are z. B. connected by a weld.
  • the threaded nut 21 is inserted and secured according to a similar division system in the upper part 23b.
  • a hexagon 24 is provided on the threaded spindle 19 for manual operation (FIGS. 3 and 4).
  • the support means 17 could generate an undesirable bending moment in the upper support frame 5a and in other components.
  • an insert 25, which may be detachable, is inserted on the stop 11 axially symmetrically with respect to the axes 14 and 15.
  • the secondary adjustment drive 10 is arranged symmetrically in pairs 26 (FIG. 5) on the upper support frame 5a and can be actuated synchronously by means of a common drive 27.
  • the associated drive motor 27a and a downstream countershaft transferred 28 the setting force by means of the pivot shafts 29 and 30 to the respective first side adjustment drive 10 and further to the respective second side adjustment drive 10 p ritatiswellen there by means extending parallel to the support rollers 4 V 31 and 32nd
  • the connecting shafts 31 and 32 each drive on a worm gear 33 (FIG. 2), the worm wheel 34 of which is fastened on the threaded spindle 19.
  • the worm 35 (inside the worm gear housing) is fastened on the respective connecting shaft 31 or 32.
  • FIG. 2 An alternative solution to the arrangement of the threaded spindle 19 with a threaded nut 21 is shown in FIG. 2.
  • the threaded nut 21 is fixed upward against a fixed shoulder 36.
  • this embodiment corresponds to the embodiment described for FIGS. 3 and 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP86103274A 1985-03-12 1986-03-11 Metallstranggiessvorrichtung, insbesondere für Gussstränge aus Stahl Expired EP0194656B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103274T ATE38000T1 (de) 1985-03-12 1986-03-11 Metallstranggiessvorrichtung, insbesondere fuer gussstraenge aus stahl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3508658 1985-03-12
DE19853508658 DE3508658A1 (de) 1985-03-12 1985-03-12 Metallstranggiessvorrichtung, insbesondere fuer gussstraenge aus stahl

Publications (2)

Publication Number Publication Date
EP0194656A1 EP0194656A1 (de) 1986-09-17
EP0194656B1 true EP0194656B1 (de) 1988-10-19

Family

ID=6264864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103274A Expired EP0194656B1 (de) 1985-03-12 1986-03-11 Metallstranggiessvorrichtung, insbesondere für Gussstränge aus Stahl

Country Status (4)

Country Link
EP (1) EP0194656B1 (ja)
JP (1) JPS61216844A (ja)
AT (1) ATE38000T1 (ja)
DE (1) DE3508658A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115857A (en) * 1990-07-18 1992-05-26 Voest-Alpine Industrieanlagenbau G.M.B.H. Strand guide arrangement provided at a continuous casting plant
DE4138740A1 (de) * 1991-11-26 1993-05-27 Schloemann Siemag Ag Verfahren und vorrichtung zum stranggiessen von brammen oder bloecken
DE4306853C2 (de) * 1993-02-26 1996-03-21 Mannesmann Ag Strangführungsgerüst
DE19928196A1 (de) * 1999-06-19 2000-12-21 Sms Demag Ag Vorrichtung zum Einstellen von Führungssegmenten einer Stranggieß- bzw. Gießwalzanlage
CN114871980B (zh) * 2022-05-31 2024-04-05 桂德(武汉)科工有限公司 一种夹紧装置及其组装方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458240C3 (de) * 1963-12-20 1974-10-24 United States Steel Corp., Pittsburgh, Pa. (V.St.A.) Einer Stranggießkokille nachgeschaltete Strangtransporteinrichtung
ES331665A1 (es) * 1965-10-12 1967-11-16 Gosudarstveny Cojuzny Inst Projektirovanya Met Allourgitc Mecanismo de guia en la zona de enfriamiento secundario de una maquina de colada continua de metales.
CH515760A (de) * 1969-05-13 1971-11-30 Concast Ag Vorrichtung zum Führen eines Stranges in der Sekundärkühlzone beim Stranggiessen in Bogenanlagen
DE1963146C3 (de) * 1969-12-17 1974-02-28 Demag Ag, 4100 Duisburg Segmentrahmen für die Stütz- bzw. Transportwalzen einer Metall-, insbesondere Stahlstranggießanlage
DE2133144B2 (de) * 1971-07-03 1973-09-27 Concast Ag, Zuerich (Schweiz) Verfahren und Vorrichtung zum Ausfordern und Richten eines Stranges in einer Stranggiessanlage
JPS5192728A (ja) * 1975-02-14 1976-08-14 Renzokuchuzosetsubini okeru chuhenannaisochi
DE3106531A1 (de) * 1981-02-21 1982-09-09 SMS Schloemann-Siemag AG, 4000 Düsseldorf Treib- und richtmaschine fuer stranggiessanlagen
AT371033B (de) * 1981-09-03 1983-05-25 Voest Alpine Ag Strangfuehrungsgeruest fuer eine stranggiessanlage
JPH05231696A (ja) * 1992-02-19 1993-09-07 Nec Corp 空気調和システム

Also Published As

Publication number Publication date
DE3508658C2 (ja) 1988-04-14
JPS61216844A (ja) 1986-09-26
ATE38000T1 (de) 1988-11-15
DE3508658A1 (de) 1986-09-25
EP0194656A1 (de) 1986-09-17

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