EP2785475B1 - Einbaustück - Google Patents

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Publication number
EP2785475B1
EP2785475B1 EP12794311.6A EP12794311A EP2785475B1 EP 2785475 B1 EP2785475 B1 EP 2785475B1 EP 12794311 A EP12794311 A EP 12794311A EP 2785475 B1 EP2785475 B1 EP 2785475B1
Authority
EP
European Patent Office
Prior art keywords
chock
lubricant
roll
bore
cylinder side
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
EP12794311.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2785475A1 (de
Inventor
Karl Keller
Daniel Knie
Konrad Roeingh
Ralf Seidel
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 Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP2785475A1 publication Critical patent/EP2785475A1/de
Application granted granted Critical
Publication of EP2785475B1 publication Critical patent/EP2785475B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • 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
    • B21B31/074—Oil film bearings, e.g. "Morgoil" bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls

Definitions

  • the invention relates to a chock, that is a bearing housing, for supporting an upper support roll in a rolling stand, typically for hot rolling or cold rolling of metal strip.
  • the invention further relates to a method for producing this chock.
  • the US 2002/0084594 A1 discloses a chock with integrally molded seal retaining ring.
  • Chocks for supporting an upper support roll in a rolling stand are also in the international patent application WO 2007/115791 A1 , the German patent application DE 10 2006 016 714 A1 and the European patent application EP 0 285 333 A2 disclosed.
  • the chocks shown therein each reveal a main bore extending from the discharge side to the bale side of the chock for receiving a roll neck of the upper support roller.
  • the chocks further comprise a arranged on the ball side lubricant collecting space, in particular in the lower region of the chocks, wherein the lubricant collecting space are associated with two mirror-symmetrically arranged to a vertical longitudinal center plane lubricant drain holes, which extend from the lubricant collecting space on the bale side in the direction of the drainage side of the chock.
  • the preamble of claim 1 is based on DE 10 2006 016 714 A1 ,
  • the invention has the object of developing a known chock to the effect that despite positioning and dimensioning of the lubricant drain holes so that recesses can be provided in the right and left lower corner of the chock, on the one hand the function of the ring seal is ensured, on the other enough space is available for accumulated lubricant and that in addition an optimal power flow is ensured by the pins of the support roller on the journal bushings, the bushings to the chock.
  • the mating surface of the ring seal corresponds - in the assembled state of the chock and roller - the outer shell of a spigot bushing extension to which the ring seal is applied.
  • the claimed criteria for the two distances d and s it is possible to greatly reduce the width of the chock in the lower region at least on the bale side, so that recesses can be provided in the right and left lower corner region of the chock, for example Inclusion of negative-acting bending cylinders. While the first claimed criterion essentially defines the remaining width of the upper chock in the lower region, the second criterion ensures that the ball-side seal remains fully functional. This means that the forming oil sump is not rises so much that the spigot bushing extension rotates in this oil stump, which would result in leakage.
  • the claimed design of the lubricant collecting space as on the ball side annular groove which has a widening in the lower portion of the chock offers the advantage that circumferentially from the gap between the bearing bush and pin bushing escaping lubricant can be received anywhere on the periphery. Furthermore, the expansion offers the advantage that, in particular in the lower region of the chock, where due to the weight accumulates particularly much leaked lubricant, enough space for the accumulated lubricant is available.
  • the wall of the chock facing away from the bale side, delimiting the lubricant chute space extends smoothly radially as seen from the longitudinal axis of the chock. It is important that the inside of the chock is as possible over its entire width non-positively and positively connected to the bearing bush.
  • the inventively constructed wall due to their radially smooth formation on the roll barrel side hineckenden projections or noses, which are not force and / or positively connected with the bearing bush.
  • the inventive design an optimal power flow is ensured by the pins of the support roller on the journal bushings, the bushings into the chock; this would not necessarily be given in providing the known lugs or projections.
  • the terms “bottom” and “top”, “vertical” and “horizontal” are used. These terms are used to describe the position of individual technical features of the chock or to describe the relative positions of individual technical features to each other. When using these terms, it is assumed that the chock is placed on a horizontal plane. In the representations in the FIGS. 1 to 6 can be assumed that the chock on an example horizontal plane is set up or as in FIG. 1 shown horizontally mounted in the roll stand.
  • the chock on its bale side an annular circumferential seal retaining ring for holding a ring seal.
  • This seal retaining ring is inventively formed integrally with the chock.
  • this seal retainer ring was often bolted to the chock in the form of a lid. This was technically more complex because the lid had to be made as a separate component.
  • the assembly and disassembly of this cover was time consuming and therefore also costly.
  • the ring seal is used to seal the chock against the roll neck or the pin bushing extension.
  • the ring seal also serves to seal the lubricant collecting space against the bale of the upper backup roll.
  • the chock in the region of the lubricant collecting space on two of the lubricant drain holes, which are arranged mirror-symmetrically to the vertical longitudinal center plane.
  • the provision of the two lubricant drain holes ensures the drain for the lubricant.
  • the expansion can be easily provided in the lower area of the chock on the ball side and from a design point of view, because there are no particularly large rolling forces in the lower area.
  • the rolling force acts upwards in the upper back-up roll and in the chocks receiving it, that is, in the upper region of the chocks, as known in the art.
  • the chock comprises a cylindrical bushing inserted into its main bore.
  • the annular lubricant collecting space and its expansion are produced according to the invention by milling the previously cast chock.
  • the lubricant drain hole can be easily made by drilling the casted chock. The milling and drilling allows a geometrically very precise design of the lubricant collecting space, of its expansion and the drain holes.
  • FIG. 1 shows a cross section through a stator window of a rolling stand.
  • the stator window is designated by reference numeral 850.
  • an upper work roll 860 and a lower work roll 870 can be seen, which are each rotatably mounted in their work roll chocks 862, 872 and vertically slidably mounted in the stator window 850.
  • the lower work roll 870 is associated with a lower backup roll 880, which in turn is rotatably mounted in a lower backup roll chock 890.
  • the upper work roll 860 is associated with an upper support roll 200, which in turn is rotatably mounted in an upper backup roll chock 100 and is preferably vertically displaceable in the stand window 850.
  • the structural design of this upper backup roll chock 100 is the subject of the present invention.
  • FIG. 1 shows that in the illustrated cross section through the stator window, the upper backup roll chock in its left and right lower corners, respectively Has recesses 700 to create space, for example, for the arrangement of negative-acting bending cylinders 895, which are typically fixedly mounted on the stator window.
  • FIG. 2 shows a perspective view of the upper backup roll chock 100.
  • the bale side 100-B of the chock is shown; this is the side which later faces the bale of the back-up roll when the back-up roll is installed.
  • Opposite the bale side is the drainage side 100-A of the chock, so named because there the lubricant collected in the annular lubricant trap chamber 120 and its expansion 120-1 during the rolling operation runs through the lubricant drain holes 130.
  • FIG. 3 shows the chock FIG. 2 in cut condition.
  • a sealing retaining ring 140 can be seen here, which according to the invention is formed integrally with the chock. Preferably, it is poured when pouring the chock with equal.
  • the seal retaining ring 140 serves to receive a ring seal 400 as later in FIG FIG. 6 explained in more detail.
  • FIG. 3 to recognize an inner side 105 of the chock, at which a bearing bush 160 is positively and positively abut; please refer FIG. 6 ,
  • the side facing away from the ball side of the groove-like circumferential lubricant collecting space 120 is designated by the reference numeral 106.
  • This wall is according to the invention - with respect to the longitudinal axis L of the chock - radially smooth.
  • FIG. 4 shows the chock according to the invention in a longitudinal section through the longitudinal axis L.
  • the diameter D of the main bore 110 of the chock can be seen.
  • FIG. 5 shows a cross section through the chock for the upper support roller on the operator side.
  • the distance d can be seen, which defines the distance of the center point of one of the lubricant outflow bores 130 to the vertical longitudinal center plane LM of the chock 100.
  • this distance d ⁇ half the diameter D of the main bore 110 of the chock must be without bearing bush in order to reduce the width of the chock in the lower area so far that the desired recesses 700 can be realized.
  • the vertical minimum distance s from the outer circumferential surface of the pin bushing extension 232, see FIG. 6 also called running diameter or mating surface 600 for the ring seal 400, in the lower region of the chock to a horizontal tangential plane 500 at the top of the lubricant drain holes 130 does not fall below a predetermined minimum distance threshold. This is necessary to ensure the function of the ring seal.
  • the minimum distance threshold for the distance s is, for example, 2 mm; For example, 10 mm can be used as the upper limit for this distance.
  • FIG. 6 shows the chock 100 according to the invention with built-in upper support roller 200.
  • the upper partial view I. in FIG. 6 shows the upper portion of the chock with the ring seal 400 and the lower detail view II in FIG. 6 shows the lower part of the chock with the same ring seal 400. Both detail views show the same chock 100th
  • the upper backup roll 200 includes a roll barrel 210 and a roll neck 220-1.
  • a spigot bushing 230 Rotatably mounted on the roll neck is a spigot bushing 230 having a bolt journal extension 232 extending in the direction of the roll bale.
  • the backing roll 200 with the roll neck 220-1 and the spigot bushing 230 is rotatably mounted in the bearing bush 160.
  • a lubricating film 205 is formed, from which during the rolling operation lubricant exits into the lubricant collecting space 120 and its expansion 120-1.
  • the bearing bush 160 is rotatably mounted in the main bore 110 of the chock 100.
  • the seal retaining ring 140 can be seen, which is integrally connected to the chock 100.
  • the seal retaining ring 140 serves to receive the annular seal 400, which rests with its sealing lips on the spigot bushing extension 232 and here the sealing function in both directions (prevent lubricating oil at the outlet in the direction of roll bale and cooling water with possibly dirt not in the lubricating oil space, that is, the lubricant collecting space to let pass).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP12794311.6A 2011-12-01 2012-11-28 Einbaustück Active EP2785475B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110087605 DE102011087605A1 (de) 2011-12-01 2011-12-01 Einbaustück und Verfahren zu dessen Herstellung
PCT/EP2012/073786 WO2013079503A1 (de) 2011-12-01 2012-11-28 Einbaustück und verfahren zu dessen herstellung

Publications (2)

Publication Number Publication Date
EP2785475A1 EP2785475A1 (de) 2014-10-08
EP2785475B1 true EP2785475B1 (de) 2015-09-16

Family

ID=47263351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12794311.6A Active EP2785475B1 (de) 2011-12-01 2012-11-28 Einbaustück

Country Status (8)

Country Link
US (1) US9162266B2 (zh)
EP (1) EP2785475B1 (zh)
JP (1) JP5806415B2 (zh)
CN (1) CN104114295B (zh)
DE (1) DE102011087605A1 (zh)
IN (1) IN2014CN04863A (zh)
RU (1) RU2573156C1 (zh)
WO (1) WO2013079503A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012224511A1 (de) * 2012-12-28 2014-07-03 Sms Siemag Ag Einbaustück zum Lagern einer Walze in einem Walzenständer
DE102015209637A1 (de) * 2015-05-26 2016-12-01 Sms Group Gmbh Walzenanordnung
EP3766595A1 (de) 2019-07-17 2021-01-20 Primetals Technologies Austria GmbH Kaltwalzen von walzgut

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU801918A1 (ru) * 1979-03-19 1981-02-07 Предприятие П/Я В-2869 Гидродинамическа опора валковпРОКАТНыХ CTAHOB
US4772137A (en) 1987-03-30 1988-09-20 Morgan Construction Company Oil film bearing and bushing
US4944609A (en) * 1987-03-30 1990-07-31 Morgan Construction Company Oil film bearing and bushing
RU2176939C2 (ru) * 1998-02-18 2001-12-20 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Гидростатодинамический подшипник жидкостного трения для валков прокатных станов
JP4341103B2 (ja) * 1999-03-17 2009-10-07 Ｊｆｅスチール株式会社 油膜軸受
CN2427285Y (zh) * 2000-04-28 2001-04-25 太原重型机械(集团)有限公司 一种带快速锁紧装置的油膜轴承
IT1315161B1 (it) 2000-12-29 2003-02-03 Danieli Off Mecc Guarnizione anulare di tenuta per cilindri di laminazione
DE10302271B4 (de) * 2003-01-22 2014-06-18 Sms Siemag Aktiengesellschaft Einbaustück zur Aufnahme eines Walzenzapfens
US6783131B2 (en) 2003-01-31 2004-08-31 Morgan Construction Company Neck seal
DE102004003763B4 (de) 2004-01-23 2005-10-20 Sms Demag Ag Vorrichtung zur ballenseitigen Abdichtung des Lagers eines Walzenzapfens
KR100643172B1 (ko) * 2005-06-16 2006-11-10 주식회사 경도공업 압연기의 압연롤쵸크 실링구조
DE102006016714A1 (de) 2006-04-08 2007-10-11 Sms Demag Ag Einbaustück zur Aufnahme eines Walzenzapfens
CN2923075Y (zh) * 2006-05-10 2007-07-18 傅锐 一种防止轧辊末端漏油的装置
US7500374B2 (en) * 2007-04-03 2009-03-10 Morgan Construction Company Apparatus for urging an oil film bearing onto and off of a roll neck in a rolling mill
CN101457794A (zh) * 2009-01-04 2009-06-17 上海大学 智能轧机油膜轴承
CN201442010U (zh) * 2009-06-24 2010-04-28 鞍钢股份有限公司 一种支持辊油膜轴承密封装置

Also Published As

Publication number Publication date
WO2013079503A1 (de) 2013-06-06
RU2573156C1 (ru) 2016-01-20
CN104114295B (zh) 2016-04-20
DE102011087605A1 (de) 2013-06-06
CN104114295A (zh) 2014-10-22
IN2014CN04863A (zh) 2015-09-18
JP5806415B2 (ja) 2015-11-10
JP2015500143A (ja) 2015-01-05
EP2785475A1 (de) 2014-10-08
US20150114066A1 (en) 2015-04-30
US9162266B2 (en) 2015-10-20

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