EP0824045B1 - Eccentric bearing bush for roll shaft - Google Patents

Eccentric bearing bush for roll shaft Download PDF

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Publication number
EP0824045B1
EP0824045B1 EP97110959A EP97110959A EP0824045B1 EP 0824045 B1 EP0824045 B1 EP 0824045B1 EP 97110959 A EP97110959 A EP 97110959A EP 97110959 A EP97110959 A EP 97110959A EP 0824045 B1 EP0824045 B1 EP 0824045B1
Authority
EP
European Patent Office
Prior art keywords
eccentric bearing
roller
bearing sleeve
shaft
gear housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97110959A
Other languages
German (de)
French (fr)
Other versions
EP0824045A3 (en
EP0824045A2 (en
Inventor
Gerhard Pithan
Rüdiger Grimmel
Karl Keller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP0824045A2 publication Critical patent/EP0824045A2/en
Publication of EP0824045A3 publication Critical patent/EP0824045A3/en
Application granted granted Critical
Publication of EP0824045B1 publication Critical patent/EP0824045B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/26—Adjusting eccentrically-mounted roll bearings
    • 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
    • B21B31/07—Adaptation of roll neck bearings
    • 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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/005—Cantilevered roll stands

Definitions

  • the invention relates to an eccentric bearing sleeve, the two ends store in a roller gear housing, for, in this on both ends, eccentrically mounted roller supporting shafts with one on the outside of the bearing attachable roller ring and arranged between the shaft ends, through a circumferential recess of the bearing sleeve with a meshing drive wheel also mounted in the roller gear housing, splined shaft sections.
  • this type of training requires those held by the supporting structure in the roller gear housing inner eccentric bearing sleeve section of this support structure to solve, and from the other eccentric bearing sleeve section as well subtract from the end of the roller supporting shaft facing away from the rolling ring. Then, after pulling off the rolling ring from the bearing outer end of the support shaft, this from the other, in the peripheral wall of the rolling gear housing eccentric bearing sleeve section be pulled out inside.
  • the replacement the replacement roller shaft is carried out in the reverse order the described expansion steps.
  • This inventive design of the eccentric bearing sleeve and the roller shaft allows a roller shaft after loosening the Axial displacement protection in the roller gear housing in the simplest way outwards from the eccentric bearing sleeve remaining in the roller gear housing pull out and the replacement roller shaft as well simply insert it from the outside into the eccentric bearing sleeve.
  • the rolling ring located on each of the support shafts can be in its roll-adjusted position remain on the support shaft.
  • the eccentric bearing sleeve can this form of training be formed in one piece.
  • the eccentric bearing sleeve consists of the Sleeve sections 1a and 1b.
  • the sleeve portion 1a is stored in the Outer wall 2a of the roller gear housing 2 and has an eccentric bearing 1a 'on.
  • the eccentric bearing sleeve section 1a is the eccentric bearing sleeve section 1b scheduled; this has an eccentric bearing 1b 'and is supported by the support structure 2b of the roller gear housing 2 worn.
  • the roller support shaft 4 with its ends 4a and 4b.
  • the roller supporting shaft 4 can only be removed, when the eccentric sleeve portion 1b in the direction of arrow P from the end facing away from the rolling ring 5 4b after loosening the Axialverschiebeêt 3 from the end facing away from the rolling ring 5 4b of the roller support shaft 4 has been removed and the roller ring 5 itself was removed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Retarders (AREA)

Description

Die Erfindung betrifft eine Exzenter-Lagerhülse, deren beide Enden in einem Walz-Getriebegehäuse lagern, für, in diesem beidendig, exzentrisch gelagerte Walzentragwellen mit einem lageraußenseitig aufsetzbaren Walzring und zwischen den Wellenenden angeordnete, durch eine Umfangsausnehmung der Lagerhülse hindurch mit einem, ebenfalls in dem Walzgetriebegehäuse gelagerten Antriebsrad kämmenden, stirnverzahnten Wellenabschnitten.The invention relates to an eccentric bearing sleeve, the two ends store in a roller gear housing, for, in this on both ends, eccentrically mounted roller supporting shafts with one on the outside of the bearing attachable roller ring and arranged between the shaft ends, through a circumferential recess of the bearing sleeve with a meshing drive wheel also mounted in the roller gear housing, splined shaft sections.

Diese Ausbildungsformen von Exzenter-Lagerhülsen und, in diesen exzentrisch lagernden Walzentragwellen wird in erster Linie bei der Fertigstufe von kontinuierlichen Drahtwalzstraßen angewandt. Diese Fertigstraßen arbeiten mit sehr hohen Walzgeschwindigkeiten, die zu einer entsprechend großen Belastung der Walzentragwellen führen. Diese Belastung wird noch dadurch vergrößert, daß die den durchlaufenden Walzdraht formenden Walzringe fliegend, d.h. lageraußenseitig, angeordnet sind. Die Tragwellen müssen deshalb verhältnismäßig häufig ausgetauscht werden.These forms of training of eccentric bearing sleeves and, in these eccentrically mounted roller shafts are primarily used for Finishing stage of continuous wire rolling mills applied. This Finishing lines work at very high rolling speeds that lead to a correspondingly large load on the roller supporting shafts. This load is further increased by the fact that the continuous Roll rings forming wire rod flying, i.e. outside of the bearing, are arranged. The support shafts must therefore be proportionate are exchanged frequently.

Bei den genannten, bekannten Ausbildungsformen der Exzenter-Lagerhülse und der, in dieser exzentrisch gelagerten Walzentragwelle besteht die Exzenter-Lagerhülse als zwei axial gegeneinander- oder aufeinanderschiebbaren Hülsenabschnitten, von denen der eine in der Umfangswand des Walz-Getriebegehäuses drehgelagert ist und das Exzenterlager für das walzringseitige Ende der Walzentragwelle aufnimmt, während der andere Hülsenabschnitt das Exzenterlager für das, dem Walzring abgewandte Ende der Walzentragwelle aufnimmt und von einer Tragkonstruktion im Innern des Walz-Getriebegehäuses gehalten wird. In diesen Exzenter-Lagerhülsenabschnitt greift dabei eine, mit dem Walzgetriebegehäuse verbundene lösbare Axialverschiebesicherung für die aus den beiden Abschnitten zusammengesetzte Exzenter-Lagerhülse ein.In the known training forms of the eccentric bearing sleeve and that, in this eccentrically mounted roller shaft there is the eccentric bearing sleeve as two axially against each other or stackable sleeve sections, one of which is in the Circumferential wall of the roller gear housing is rotatably mounted and that Eccentric bearing for the end of the roller support shaft on the rolling ring side takes up, while the other sleeve section the eccentric bearing for the end of the roller supporting shaft facing away from the rolling ring and from a supporting structure inside the roller gear housing is held. This engages in this eccentric bearing sleeve section a releasable axial displacement lock connected to the roller gear housing for the one composed of the two sections Eccentric bearing sleeve.

Für das Auswechseln der Walzentragwellen, d.h. den Ausbau einer Walzentragwelle, ist es bei dieser Ausbildungsform erforderlich, den von der Tragkonstruktion im Walz-Getriebegehäuse gehaltenen inneren Exzenter-Lagerhülsenabschnitt von dieser Tragkonstruktion zu lösen, und von dem anderen Exzenter-Lagerhülsenabschnitt sowie von dem, dem Walzring abgewandten Ende der Walzentragwelle abzuziehen. Anschließend kann nach vorhergegangenem Abziehen des Walzrings von dem lageraußenseitigen Ende der Tragwelle diese aus dem anderen, in der Umfangswand des Walzgetriebegehäuses lagernden Exzenter-Lagerhülsenabschnitt nach innen herausgezogen werden. Der Wiedereinbau der Austausch-Walzentragwelle erfolgt in umgekehrter Reihenfolge der beschriebenen Ausbau-Schritte. Diese Arbeiten gestalten sich wegen der weiteren in dem Walzgetriebegehäuse angeordneten Getriebelemente und der dadurch bedingten Raumenge sehr schwierig, erfordern große Erfahrungen des Montagepersonals und bedingen einen erheblichen Zeitaufwand mit entsprechend langen Stillstandszeiten der Walzstraße. Der Erfindung liegt die Aufgabe zugrunde, den Einund Ausbau der Walzentragwellen zu vereinfachen, den dafür erforderlichen Zeitaufwand zu verringern und darüber hinaus auch den Herstellungsaufwand für die Exzenter-Lagerhülsen selbst zu vermindern.For the replacement of the roller shafts, i.e. expanding a Roller shaft, this type of training requires those held by the supporting structure in the roller gear housing inner eccentric bearing sleeve section of this support structure to solve, and from the other eccentric bearing sleeve section as well subtract from the end of the roller supporting shaft facing away from the rolling ring. Then, after pulling off the rolling ring from the bearing outer end of the support shaft, this from the other, in the peripheral wall of the rolling gear housing eccentric bearing sleeve section be pulled out inside. The replacement the replacement roller shaft is carried out in the reverse order the described expansion steps. Design this work arranged because of the others in the rolling gear housing Gear elements and the resulting space is very difficult, require extensive experience of the assembly staff and require one considerable expenditure of time with correspondingly long downtimes the rolling mill. The invention has for its object the Einund To simplify the expansion of the roller supporting shafts, the necessary for this Reduce time and also the manufacturing effort for the eccentric bearing sleeves themselves.

Diese Aufgabe wird dadurch gelöst, daß der Innendurchmesser des Exzenterlagers für das walzringseitige Ende der jeweiligen Tragwelle größer bemessen ist, als der Außendurchmesser des stirnverzahnten Wellenabschnitts dieser Tragwelle. This object is achieved in that the inside diameter of the Eccentric bearing for the end of the respective support shaft on the rolling ring side is dimensioned larger than the outer diameter of the spur gear Shaft section of this support shaft.

Diese erfindungsgemäße Ausbildungsform der Exzenter-Lagerhülse und der Walzentragwelle erlaubt es, eine Walzentragwelle nach Lösen der Axialverschiebesicherung im Walzgetriebegehäuse in einfachster Weise nach außen aus der, im Walzgetriebegehäuse verbleibenden Exzenter-Lagerhülse herauszuziehen und die Austausch-Walzentragwelle ebenso einfach wieder von außen in die Exzenter-Lagerhülse einzustecken. Der jeweils auf den Tragwellen befindliche Walzring kann dabei in seiner walzjustierten Position auf der Tragwelle verbleiben.This inventive design of the eccentric bearing sleeve and the roller shaft allows a roller shaft after loosening the Axial displacement protection in the roller gear housing in the simplest way outwards from the eccentric bearing sleeve remaining in the roller gear housing pull out and the replacement roller shaft as well simply insert it from the outside into the eccentric bearing sleeve. The rolling ring located on each of the support shafts can be in its roll-adjusted position remain on the support shaft.

Wie die Erfindung weiter vorsieht, kann die Exzenter-Lagerhülse bei dieser Ausbildungsform einstückig ausgebildet sein.As the invention further provides, the eccentric bearing sleeve can this form of training be formed in one piece.

Die Erfindung wird anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. In der Zeichnung zeigen

Fig. 1
eine bekannte Ausbildungsform der Exzenter-Lagerhülse mit Walzentragwelle im Axialschnitt,
Fig. 2
die Ausbildung von Exzenter-Lagerhülse und Walzentragwelle nach der Erfindung, ebenfalls in Axialschnitt.
The invention is explained in more detail with reference to the embodiment shown in the drawing. Show in the drawing
Fig. 1
a known design of the eccentric bearing sleeve with a roller shaft in axial section,
Fig. 2
the formation of the eccentric bearing sleeve and roller support shaft according to the invention, also in axial section.

Wie aus Fig. 1 zu ersehen, besteht die Exzenter-Lagerhülse aus den Hülsenabschnitten 1a und 1b. Der Hülsenabschnitt 1a lagert in der Außenwand 2a des Walz-Getriebegehäuses 2 und weist ein Exzenterlager 1a' auf. An diesen Exzenterlager-Hülsenabschnitt 1a ist der Exzenterlager-Hülsenabschnitt 1b angesetzt; dieser weist ein Exzenterlager 1b' auf und wird von der Tragkonstruktion 2b des Walzgetriebegehäuses 2 getragen. An dieser ist auch die Axialverschiebesicherung 3 für die, aus den Hülsenabschnitten 1a und 1b zusammengesetzte Exzenter-Lagerhülse 1 angeordnet. In den beiden Exzenterlagern 1a' und 1b' lagert die Walzentragwelle 4 mit ihren Enden 4a bzw. 4b. Auf den aus der Außenwand 2a des Walz-Getriebegehäuses 2 herausragenden Abschnitt 4c ist ein Walzring 5 aufgesetzt und durch eine Schraubhülse 6 gehalten. An einen außenseitigen radialen Ansatz der Exzenter-Lagerhülse greift ein Drehantrieb 7 an, der die Drehung der Exzenter-Lagerhülse 1 im Walzgetriebegehäuse 2 bewirkt. Zwischen den beiden, gelagerten Enden 4a und 4b der Walzentragwelle 4 weist diese einen stirnverzahnten Wellenabschnitt 4d auf.As can be seen from Fig. 1, the eccentric bearing sleeve consists of the Sleeve sections 1a and 1b. The sleeve portion 1a is stored in the Outer wall 2a of the roller gear housing 2 and has an eccentric bearing 1a 'on. At this eccentric bearing sleeve section 1a is the eccentric bearing sleeve section 1b scheduled; this has an eccentric bearing 1b 'and is supported by the support structure 2b of the roller gear housing 2 worn. This is also the axial shift lock 3 for those composed of the sleeve sections 1a and 1b Eccentric bearing sleeve 1 arranged. In the two eccentric bearings 1a ' and 1b 'supports the roller support shaft 4 with its ends 4a and 4b. On the protruding from the outer wall 2a of the roller gear housing 2 Section 4c is a rolling ring 5 and placed by a Screw sleeve 6 held. To an outside radial approach of the Eccentric bearing sleeve attacks a rotary drive 7, which is the rotation the eccentric bearing sleeve 1 in the roller gear housing 2 causes. Between the two, supported ends 4a and 4b of the roller support shaft 4 this a spur shaft section 4d.

Wie ersichtlich kann die Walzentragwelle 4 nur ausgebaut werden, wenn der Exzenterhülsen-Abschnitt 1b in Richtung des Pfeils P von dem, dem Walzring 5 abgewandten Ende 4b nach vorherigem Lösen der Axialverschiebesicherung 3 von dem dem Walzring 5 abgewandten Ende 4b der Walzentragwelle 4 abgezogen worden ist und der Walzring 5 selbst entfernt wurde.As can be seen, the roller supporting shaft 4 can only be removed, when the eccentric sleeve portion 1b in the direction of arrow P from the end facing away from the rolling ring 5 4b after loosening the Axialverschiebesicherung 3 from the end facing away from the rolling ring 5 4b of the roller support shaft 4 has been removed and the roller ring 5 itself was removed.

Die Ausbildung nach Fig. 2 unterscheidet sich von der nach Fig. 1 nur dadurch, daß der Innendurchmesser D des dem Walzring 5 zugewandten Exzenterlagers 1a' der Exzenter-Lagerhülse 1 größer bemessen ist als der Walzendurchmesser d des stirnverzahnten Abschnitts 4d der Walzentragwelle 4, der mit dem Antriebsstirnrad 9 kämmt. Die Exzenter-Lagerhülse 1 konnte hier, wie ersichtlich, aus einem Stück bestehen, weil die Ausbildung des Exzenterlagers 1a und des stirnverzahnten Abschnitts 4d der Walzentragwelle 4 ein Herausziehen der Walzentragwelle in Richtung des Pfeils P' nach außen aus dem Walzgetriebegehäuse 2 erlaubt, wobei es keiner vorherigen Entfernung des Walzrings 5 bedarf. Ebenso kann die Walzentragwelle 4 mit dem darauf sitzenden Walzring 5 von außen her wieder in die gezeichnete Position eingesetzt werden.2 differs from that of FIG. 1 only in that the inner diameter D of the rolling ring 5 facing Eccentric bearing 1a 'of the eccentric bearing sleeve 1 dimensioned larger is the roller diameter d of the spur-toothed portion 4d the roller support shaft 4, which meshes with the drive spur gear 9. The Eccentric bearing sleeve 1 could, as can be seen, from one piece exist because the design of the eccentric bearing 1a and the spur gear Section 4d of the roller support shaft 4 pulling out the Roller support shaft in the direction of arrow P 'outwards from the roller gear housing 2 allowed, with no previous removal of the Rolling rings 5 required. Likewise, the roller support shaft 4 with the on it seated rolling ring 5 from the outside back into the drawn position be used.

Claims (2)

  1. Eccentric bearing sleeve (1), the two ends (1a, 1b) of which are journalled in a rolling gear housing (2), for roller carrier shafts (4), which are eccentrically mounted at both ends in the sleeve, with a rolling ring (5) placeable at the mount outer side and with splined shaft sections (4d) arranged between the shaft ends (4a, 4b) and meshing via a circumferential recess of the eccentric bearing sleeve (1) with a drive wheel (9) equally mounted in the rolling gear housing (2), characterised in that the inner diameter (D) of the eccentric bearing (1a') for the end (4a) of the roller carrier shaft (4) at the rolling ring end (4a) is dimensioned to be larger than the outer diameter (d) of the splined shaft section (4d) of this roller carrier shaft (4).
  2. Eccentric bearing sleeve according to claim 1, characterised in that the bearing sleeve (1) is of integral construction.
EP97110959A 1996-07-18 1997-07-02 Eccentric bearing bush for roll shaft Expired - Lifetime EP0824045B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19628956 1996-07-18
DE19628956A DE19628956A1 (en) 1996-07-18 1996-07-18 Eccentric bearing sleeve for roller support shafts

Publications (3)

Publication Number Publication Date
EP0824045A2 EP0824045A2 (en) 1998-02-18
EP0824045A3 EP0824045A3 (en) 1998-05-06
EP0824045B1 true EP0824045B1 (en) 2001-10-31

Family

ID=7800149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97110959A Expired - Lifetime EP0824045B1 (en) 1996-07-18 1997-07-02 Eccentric bearing bush for roll shaft

Country Status (2)

Country Link
EP (1) EP0824045B1 (en)
DE (2) DE19628956A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19650580A1 (en) * 1996-12-06 1998-06-10 Schloemann Siemag Ag Roll stand eccentric bearing sleeves for roll supporting shafts
DE10046428A1 (en) * 2000-09-20 2002-03-28 Sms Demag Ag Device for damping vibrations and for reducing axial deflection of the support shafts of pairs of rollers arranged overhung
US6959579B2 (en) * 2003-05-08 2005-11-01 Morgan Construction Company Triple bearing arrangement for cantilevered roll shafts
CN1301809C (en) * 2004-04-21 2007-02-28 摩根建设公司 Triple bearing arrangement for cantilevered roll shafts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1175058B (en) * 1983-02-25 1987-07-01 Danieli Off Mecc SUPER-COMPACT LAMINATION BLOCK WITH ROLLER ROLLERS AND LAMINATION LINE INCLUDING BLOCKS SO FORMED
IT1187546B (en) * 1985-03-12 1987-12-23 Danieli Off Mecc COMPENSATOR DEVICE FOR CAGES WITH ROLLER ROLLERS
DE4110938C2 (en) * 1991-04-02 1995-06-01 Thaelmann Schwermaschbau Veb Spindleless drive for billets and ring stands

Also Published As

Publication number Publication date
DE59705153D1 (en) 2001-12-06
EP0824045A3 (en) 1998-05-06
DE19628956A1 (en) 1998-01-22
EP0824045A2 (en) 1998-02-18

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