US3902346A - Rolling mill frames - Google Patents

Rolling mill frames Download PDF

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Publication number
US3902346A
US3902346A US516152A US51615274A US3902346A US 3902346 A US3902346 A US 3902346A US 516152 A US516152 A US 516152A US 51615274 A US51615274 A US 51615274A US 3902346 A US3902346 A US 3902346A
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US
United States
Prior art keywords
stand
parts
mill frame
rolling mill
stand part
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
US516152A
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English (en)
Inventor
Ernst Georg Reichrath
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.)
Moeller and Neuman GmbH
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Moeller and Neuman 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 Moeller and Neuman GmbH filed Critical Moeller and Neuman GmbH
Application granted granted Critical
Publication of US3902346A publication Critical patent/US3902346A/en
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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
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/028—Prestressing of rolls or roll mountings in stand frames
    • 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
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods

Definitions

  • each stand has a lower and an upper stand part.
  • the stand parts are connected together by a pair of tie rods, both ends of each tie rod being supported on the lower and upper stand parts in a stress transmitting manner.
  • the upper stand part can be displaced to permit rolls supported in the mill frame to be changed.
  • Each tie rod is releasable by means of a bayonet type fast engagement connection and each such connection is disposed adjacent a separation point of one of the stand parts,
  • This invention relates to rolling mill frames and is more particularly concerned with a rollingmill frame having composite stands. each stand having-a lower and an upper stand part which parts are conhectedtogether by a pair of tie rods, wherein both ends of each tie rod are supported on the lower and the upper-stand parts in a releasable stress-transmitting manner and: wherein the upper stand part can be displaced to permit rolls supported in the mill frame to be changed.
  • the upper part of the rolling mill stand must be lifted to a position above the upwardly projecting tie rods when rolls are to be changed.
  • the normal height of'the 'rtinning track of a crane or hoist used inthe roll changing operation tends to hamper the conversion of the rolling mill frame.
  • the exposed tie rods are subject to the risk of damage, c.g. by a load carried by the crane or hoist; furthermore difficulties arise when the upper stand part is to be engaged again with the tie rods which project high above the lower stand part.
  • J l I These disadvantages are avoided by the invention by means of bayonet-type rapid engagement connections one of which is disposed adjacent each respective separating point between the stand parts.
  • each tie rod is toothed to form an inner member of a bayonet connection and projects in this case downwardly from the upper stand part.
  • the tie rods remain in the lower stand part after this connection has been released and the upper stand part lifted off.
  • the bayonet-type toothed head of each tie rod projects in this case upwardly from the lower stand part.
  • the outer member may be disposed in a sleeve arranged in one of the stand parts, and the sleeve may be rotatable to permit the outer member to be moved into a desired position for actuating the bayonet-type rapid engagement connection. and in this case a hand grip may be provided on the sleeve, the hand grip extending through a slot in the respective one stand part and the rotary positioning thereof being determined by the length of the slot. In this case the tie rod is attached to the respective other stand part.
  • the rotatable sleeve may be kept short by attaching it to a tie rod member which extends through the one stand part.
  • the tie rod member can have a smaller diameter than the sleeve. less material need be removed fromthe stand part for providing the corresponding bore and the active crosssectional area of the stand part relatively increased therebyv
  • FIG. 1 .FlGql illustrates a longitudinal section through one side of a standqwith -tie rod pre-stressing and a bayonettype rapid engagement connection located in the lower stand part i.
  • FIG. 2 illustrates a section onq the line llfill in .FIG. 1 on an enla-rgedscale
  • .-.FIG.3 illustrates a longitudinal-section through one side of a stand with tie rod pro-stressing and a bayonet.- type rapid engagement connection located in the upper stand part
  • r H J FIG. 4 illustrates-a section. on the line IV--IV in FIG. 3, on an enlarged scale..- J
  • a composite stand of a rolling mill frame comprises and upper part 4, a middle part 5 .and a lower part: 1, the parts being connected togetherby means of of two tie rods 3, only one of which is shown in thedrawing.
  • a bayonet-type rapid engagement-connection is disposed in the lower frame part I, and comprises an inner member consisting of the bayonet-type toothed head 3b of this tie rod 3, and two outer members 2a and 2b of the bayonet-type rapid engagement connection which are-unitary with an axially fixed sleeve 2 and are locatedat'a mutual spacing e which corresponds to the constructional-height of the middlepart 5.
  • the middle part 5' is removable.
  • each tie rod 3 is relieved of its tension and is then rotated by application of a tool to its end 3a, thereby to release the bayonet-type rapid engagement connection. Thereupon the upper stand part 4 together with the tie rods 3 is lifted off, leaving the bayonet-type toothed head 3b of the tie rods 3 projecting downwardly from the upper stand part 4.
  • FIG. 2 illustrates a constructional example of the teeth of the bayonet-type rapid engagement connectron.
  • the rolling mill frame comprises composite stands each of which has an upper part 10, a middle part 9 and a lower part 8, which parts are connected together by means of two tie rods 11 only one of which is shown in the drawing.
  • the bayonet-type rapid engagement connection is disposed in the upper stand part 10, an outer member of the bayonettype rapid engagement connection being connected to a rotatable sleeve 12.
  • the sleeve 12 is attached to a tie rod member 13 which extends. through the upper stand part.
  • a hand. grip 14 extends through a slot 10a of the upper stand part andpermits rotation of the sleeve and thus the release of the bayonet-type rapid engagement connection, the length of the slot determining the fully engaged and fully disengaged positions.
  • FIG. 4 illustrates one constructional-example of the teeth of the bayonet-type rapid engagement connection.
  • each of said stands comprising a lower stand part. an upper stand part. said upper stand part engaging said lower stand part at separation points two tie rods means extending through said stand parts for connecting said stand parts together in a stress-transmitting manner.
  • said upper stand part being removable for permitting rolls supported in said mill frame to be changed. and bayonet-type engagement connection means for permitting said tie rod means to be released, one of said connection means being disposed adjacent each of said separation points of one of said stand parts.
  • each of said stands comprising a lower stand part. a middle stand part. an upper stand part, said stand parts being super-imposed and adjacent stand parts engaging one another at separation points, two tie rod means extending through said stand parts for connecting said stand parts together in a stress-transmitting manner.
  • said upper stand part being removable for permitting rolls supported in said mill frame to be changed. and bayonet-type engagement connections means forpermitting said tie rod means to be released, one of said connection means being disposed adjacent each of said separation points of one of said lower or upper stand parts.
  • a rolling mill frame having composite stands. each stand comprising a lower and an upper stand part, which parts are connected together by a pair of tie rods. wherein both ends of each tie rod are supported on the lower and upper stand parts in a stresstransmitting manner wherein the upper stand part can be displaced to permit rolls supported in the mill frame to be changed, wherein each tie rods is releasable by means of a bayonet-type engagement connection, and wherein each bayonet-type fast engagement connection is disposed adjacent a separation point of one of the stand stand parts.
  • a rolling mill frame according to claim 2 having a displaceable middle part. wherein two outer members of the bayonet-type engagement connection are unitary with the sleeve and are mutually spaced at a distance corresponding to the constructional height of the middle part. and wherein the sleeve is disposed in the lower stand part.
  • a rolling mill frame according to claim I wherein an outer member of each bayonet-type engagement connection is unitary with a sleeve which is axially fixed in one of the stand parts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US516152A 1973-10-25 1974-10-21 Rolling mill frames Expired - Lifetime US3902346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7338336 1973-10-25

Publications (1)

Publication Number Publication Date
US3902346A true US3902346A (en) 1975-09-02

Family

ID=6641081

Family Applications (1)

Application Number Title Priority Date Filing Date
US516152A Expired - Lifetime US3902346A (en) 1973-10-25 1974-10-21 Rolling mill frames

Country Status (7)

Country Link
US (1) US3902346A (enrdf_load_stackoverflow)
JP (1) JPS5078551A (enrdf_load_stackoverflow)
AT (1) AT337640B (enrdf_load_stackoverflow)
BE (1) BE821197A (enrdf_load_stackoverflow)
FR (1) FR2248886B3 (enrdf_load_stackoverflow)
GB (1) GB1442239A (enrdf_load_stackoverflow)
IT (1) IT1025109B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102335676A (zh) * 2010-07-28 2012-02-01 德阳市西川机械技术研究所 一种预应力轧钢机机架
CN111299329A (zh) * 2020-03-18 2020-06-19 中冶赛迪装备有限公司 一种剖分式轧机牌坊及轧钢机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5913503A (ja) * 1982-07-14 1984-01-24 Nippon Steel Corp コンビネ−シヨンミル
RU2207197C2 (ru) * 2000-07-04 2003-06-27 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Трехвалковая рабочая клеть редукционного стана
JP6226818B2 (ja) * 2014-06-03 2017-11-08 新日鉄住金エンジニアリング株式会社 プレストレス装置、これを備えるスタンド拡縮ミル及びプレストレスの付与方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286501A (en) * 1962-08-03 1966-11-22 Loewy Eng Co Ltd Pre-stressed rolling mills
US3368381A (en) * 1964-04-29 1968-02-13 Josef F Frohling Preloaded roll frame structure
US3588044A (en) * 1966-09-14 1971-06-28 Moeller & Neumann Verwalt Ges Tie rod clamp device
US3709019A (en) * 1970-02-03 1973-01-09 Sendzimir Inc T Beam backed cluster mill

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286501A (en) * 1962-08-03 1966-11-22 Loewy Eng Co Ltd Pre-stressed rolling mills
US3368381A (en) * 1964-04-29 1968-02-13 Josef F Frohling Preloaded roll frame structure
US3588044A (en) * 1966-09-14 1971-06-28 Moeller & Neumann Verwalt Ges Tie rod clamp device
US3709019A (en) * 1970-02-03 1973-01-09 Sendzimir Inc T Beam backed cluster mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102335676A (zh) * 2010-07-28 2012-02-01 德阳市西川机械技术研究所 一种预应力轧钢机机架
CN111299329A (zh) * 2020-03-18 2020-06-19 中冶赛迪装备有限公司 一种剖分式轧机牌坊及轧钢机

Also Published As

Publication number Publication date
FR2248886B3 (enrdf_load_stackoverflow) 1977-08-05
GB1442239A (en) 1976-07-14
ATA827374A (de) 1976-11-15
IT1025109B (it) 1978-08-10
JPS5078551A (enrdf_load_stackoverflow) 1975-06-26
FR2248886A1 (enrdf_load_stackoverflow) 1975-05-23
AT337640B (de) 1977-07-11
BE821197A (fr) 1975-02-17

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