JP4876381B2 - Backup roll device for rolling mill - Google Patents

Backup roll device for rolling mill Download PDF

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JP4876381B2
JP4876381B2 JP2004270682A JP2004270682A JP4876381B2 JP 4876381 B2 JP4876381 B2 JP 4876381B2 JP 2004270682 A JP2004270682 A JP 2004270682A JP 2004270682 A JP2004270682 A JP 2004270682A JP 4876381 B2 JP4876381 B2 JP 4876381B2
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ring
saddle
guide wheel
annular groove
backup roll
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JP2006083973A (en
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利明 北野
国男 樋口
孝志 増井
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JTEKT Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers

Description

本発明は、ころ軸受を用いた圧延機用バックアップロール装置、特にサドルを長持ちさせることの出来る圧延機用バックアップロール装置に関する。 TECHNICAL FIELD The present invention relates to a rolling mill backup roll apparatus using a roller bearing, and more particularly to a rolling mill backup roll apparatus capable of extending a saddle.

薄くて硬いステンレス鋼板やけい素鋼板等のような圧延板材を製造する場合には、いわゆるセンヂミアミル圧延機のような冷間圧延機が使用される。この圧延機は、径の異なる圧延用ロールを多段に配置して各ロールを駆動するように構成されている。即ち、圧延板材を上下から挟んで回転しつつ送り出すワークロール、該ワークロールをバックアップする第１中間ロール、この第１中間ロールをバックアップする第２中間ロール、そして該第２中間ロールをバックアップするバックアップロール等、のバックアップロール装置から成る多段バッキングアッセンブリとなっている。 When manufacturing a rolled plate material such as a thin and hard stainless steel plate or silicon steel plate, a cold rolling mill such as a so-called Sendia mill rolling mill is used. This rolling mill is configured such that rolling rolls having different diameters are arranged in multiple stages and each roll is driven. That is, a work roll that is fed while rotating a rolled sheet material from above and below, a first intermediate roll that backs up the work roll, a second intermediate roll that backs up the first intermediate roll, and a backup that backs up the second intermediate roll It is a multistage backing assembly comprising a backup roll device such as a roll.

従来のセンヂミアミル圧延機のバックアップロール装置は、外輪と、内輪と、これらの外輪と内輪との間に配置される保持器と、これらの保持器により保持される複列で複数のころ（ころ列）と、前記内輪外周側ところ列間に配置される案内輪と、該ころ列のに隣接して配置されるサドルと、で構成される。また、前記サドルは、図５に示す、偏心リング７と、サドルリング８と、該サドルリング８を固定するサドル部材とで構成され、サドルリング８と外輪との間にはスラストワッシャが配置される。このような構成の圧延機用バックアップロール装置では、スラスト荷重によるはサドルの偏心リング７の端面７ａところ３の端面３ａとの間の接触による「カジリ」が問題となる（特許文献３）。 Ba click-up roll apparatus of Sendjimiamiru rolling mill traditional, a plurality in double rows and outer ring, an inner ring, and a cage disposed between these outer ring and the inner ring, is held by these holders I saw a filtrate (roller rows), and the inner ring outer peripheral side where is placed between the rows guide wheels, and Sad Le disposed adjacent to the roller rows, in constructed. Further, the Sad Le is shown in FIG. 5, the eccentric ring 7, a saddle ring 8, is composed of a saddle member for fixing the saddle ring 8, the thrust between the saddle ring 8 and the outer ring Wasshi Is placed. In the backup roll device for a rolling mill having such a configuration, “sagging” due to contact between the end surface 7a of the eccentric ring 7 of the saddle and the end surface 3a of the saddle 3 is a problem (Patent Document 3) .

また、センジミアミル圧延機のバックアップロール装置には円錐ころ軸受を使用するものもある。このような圧延機用の円錐ころ軸受では、内輪のツバ部と円錐ころの端面とが圧延中のスラスト荷重による「カジリ」が生じて軸受の寿命を短くするという問題があった。そこで、この問題を解決すべく、サドルとシャフトとの間の偏心リングにバッキングベアリング内輪のツバ部を冷却するため冷却ノズルを設け、サドル内輪に穿設した流通孔から水溶性圧延油を吐出せしめるセンジミア冷間圧延機バッキングベアリングの冷却方法が提案されている（特許文献１）。 In addition, some backup roll devices of Sendia mill mills use tapered roller bearings. In such a tapered roller bearing for a rolling mill, there has been a problem in that the flange portion of the inner ring and the end face of the tapered roller are “scratched” due to a thrust load during rolling, thereby shortening the life of the bearing. Therefore, in order to solve this problem, a cooling nozzle is provided in the eccentric ring between the saddle and the shaft to cool the flange portion of the inner ring of the backing bearing, and water-soluble rolling oil is discharged from a through hole formed in the inner ring of the saddle. A cooling method for a Sendimia cold rolling mill backing bearing has been proposed (Patent Document 1).

更に、圧延機の軸受の保持器と円筒ころでは、保持器を構成する柱が円筒ころより短いものであったが、保持器の柱と、円筒ころとが繰り返し接触するうち、柱のある部分と無い部分とでは摩耗度合いが異なり、やがて摩耗の少ない部分のみが荷重を受けて剥離に至るという問題があった。そこで、保持器を形成する柱を円筒ころの長さとをほぼ等しい長さとして、軸受寿命の延長を図るという圧延機用の保持器が提案されている（特許文献２）。 Furthermore, in the cage and the cylindrical roller of the bearing of the rolling mill, the column constituting the cage was shorter than the cylindrical roller, but the portion with the column was repeatedly contacted between the column of the cage and the cylindrical roller. There was a problem in that the degree of wear was different from the part without, and only the part with little wear eventually received a load and peeled off. In view of this, a rolling mill cage has been proposed in which the length of the cylindrical roller is substantially equal to the length of the cylindrical roller (PTL 2).

特公昭５５−１３８０３Shoko 55-13803 実開平５−６２７３６Japanese Utility Model Publication 5-62736 特開２００４−１７０８１JP 2004-17081 A

センヂミアミル多段圧延機のバックアップロール装置において、サドルの偏心リング７の端面７ａは軸受のころ端面をガイドして軸受の回転を補助する構造となっているため、長期間使用したり異物の噛み込みにより、偏心リング７の端面７ａが摩耗やカジリにより損傷する場合があった。特にサドルは、構成上継続使用する必要があり、新しい軸受に組み替えた時に軸受に悪影響を及ぼすことがあった。また、サドルを交換しても高価になり、装置のコストアップの要因となるという問題もあった。 In backup roll apparatus Sendjimiamiru multi-high rolling mill, the end surface 7a of the eccentric ring 7 of Sado Le because it has a structure to assist the rotation of the bearing and guiding the roller end face of the bearing, biting prolonged use or foreign matter As a result, the end surface 7a of the eccentric ring 7 may be damaged by abrasion or galling. Particularly Sad le must be configured on the continued use, there is an adverse effect on the bearing when the reclassification to a new bearing. Further, by replacing the Sado Le becomes expensive, there is a problem of the cost increase of the apparatus.

この発明は上記する課題に対処するためになされたものであり、サドルを容易に修理可能でり、新品と交換したころ軸受にも悪影響を及ぼさず、コスト的にも安価に済むバックアップロール装置を提供することを目的としている。 The present invention has been made in order to address the above-described problems, and provides a backup roll device that can easily repair a saddle, does not adversely affect a roller bearing that is replaced with a new one, and can be inexpensive. It is intended to provide.

即ち、上記課題を解決するため、請求項１に記載の発明は、外輪と、内輪と、内外輪間に保持器により保持される複列で複数のころより成るころ軸受と、前記内輪外周側ところ列間との間に配置される第１の案内輪と、ころ列の一端側に設けられ偏心リングとサドルリングとを備えたサドルと、より成る圧延機用バックアップロール装置において、
前記サドルの偏心リングの軸方向端面に環状溝を形成し、該環状溝に前記内輪外周側ところ列間との間に配置される第１の案内輪と同一に形成された第２の案内輪を嵌め込むことを特徴とする。 That is, in order to solve the above-mentioned problem, the invention described in claim 1 includes an outer ring, an inner ring, a roller bearing composed of a plurality of rollers in a double row held by a cage between the inner and outer rings, and the inner ring outer peripheral side. However, in a backup roll device for a rolling mill comprising a first guide wheel disposed between the rows, a saddle provided with an eccentric ring and a saddle ring provided on one end side of the roller row,
An annular groove is formed in the axial end surface of the eccentric ring of the saddle, and a second guide wheel formed in the annular groove in the same manner as the first guide wheel disposed between the outer peripheral side of the inner ring and between the rows. It is characterized by fitting.

また、請求項２に記載の発明は、外輪と、内輪と、内外輪間に保持器により保持される複列で複数のころより成るころ軸受と、前記内輪外周側ところ列間との間に配置される第１の案内輪と、ころ列の一端側に設けられ偏心リングとサドルリングとを備えたサドルと、より成る圧延機用バックアップロール装置において、
前記サドルの偏心リングの軸方向端面に環状溝を形成し、該環状溝に前記内輪外周側ところ列間との間に配置される第１の案内輪と異なる鋼製リングを嵌め込むことを特徴とする。 According to a second aspect of the present invention, there is provided an outer ring, an inner ring, a roller bearing composed of a plurality of rollers in a double row held by a cage between the inner and outer rings, and the inner ring outer peripheral side and between the rows. In a backup roll device for a rolling mill, comprising: a first guide wheel that is disposed; a saddle that is provided on one end side of the roller train and includes an eccentric ring and a saddle ring ;
An annular groove formed in the axial end surface of the eccentric ring before SL saddle, the fitting the first guide wheel and different steel ring disposed between between the the annular groove the inner ring outer peripheral side where column Features.

本発明は、上記各手段により、バックアップロール装置のサドルの偏心リングの端面が、ころ端面との接触や異物の噛み込みにより、カジリ痕が生じたり損傷したりしても、簡単に補修可能となるバックアップロール装置を提供するものである。即ち、偏心リングの端面のころの端面と接触するあたりに環状溝を形成して内輪外周側ところ列間との間に配置される第１の案内輪と同一に形成された第２の案内輪、又は第１の案内輪と異なる鋼製リングを嵌め込むことにより、該偏心リングの端面ところ端面とが直接接触することがなくなるので長期間の使用に耐え得るようになるものである。 According to the present invention, the end surface of the eccentric ring of the saddle of the backup roll device can be easily repaired even if the end surface of the saddle is damaged or damaged due to contact with the roller end surface or biting of foreign matter. A backup roll apparatus is provided. That is, the second guide wheel formed in the same manner as the first guide wheel formed between the rows on the outer peripheral side of the inner ring by forming an annular groove when contacting the end face of the roller of the end face of the eccentric ring Alternatively, by fitting a steel ring different from the first guide wheel, the end face of the eccentric ring and the end face are not in direct contact with each other, so that it can withstand long-term use.

従来の圧延機用バックアップロール装置においては、軸受部分を交換する際もサドルはそのまま使用する場合が多く、交換した新品の軸受にころを案内するサドルの偏心リングの摩耗やカジリにより悪影響を及ぼすことが多かった。しかし、上記請求項１乃至請求項２の手段によれば、そのようなカジリ部分に影響されずにサドルを容易に修理可能となる。そして、新品とした軸受にも悪影響を及ぼさず、コスト的にも安価に済み且つ長寿命の冷間圧延機のバックアップロール装置とすることができる。また、本発明の手段において優れているのは、バックアップロール装置の使用途中からサドルの偏心リングの端面に環状溝を形成して内輪外周側ところ列間との間に配置される第１の案内輪と同一に形成された第２の案内輪、又は第１の案内輪と異なる鋼製リングを嵌め入れることも可能となり、カジリや損傷の生じたサドルを再生することができることである。

In conventional backup roll equipment for rolling mills, the saddle is often used as it is when the bearing part is replaced, and it may be adversely affected by wear and galling of the eccentric ring of the saddle that guides the roller to the replaced new bearing. There were many. However, according to the means of the first and second aspects, the saddle can be easily repaired without being affected by the galling portion. And it can be set as the backup roll apparatus of the cold rolling mill which does not have a bad influence also on a new bearing, is low in cost, and has a long life. Further, the present invention is superior in that the first guide disposed between the rows on the outer peripheral side of the inner ring by forming an annular groove in the end face of the eccentric ring of the saddle from the middle of use of the backup roll device. It is also possible to fit a second guide wheel formed in the same manner as the ring , or a steel ring different from the first guide wheel, and to regenerate a saddle with galling or damage.

以下、本発明の最良の実施の形態について説明する。 The best mode of the present invention will be described below.

図１は、本発明の圧延機用バックアップロール装置の一部縦断面図である。図２（Ａ）は、本発明のバックアップロール装置を構成するサドルリングとサドルの一部縦断面図であり、図２（Ｂ）は図２（Ａ）のＰ部拡大図である。図３は図２（Ａ）のＱ矢視図である。また、図２（Ａ）は、図３（Ａ）のＸーＸ矢視断面図でもある。なお、本発明の構成では、重複を避けるため従来技術で説明した同一の構成要素には同一の符号を使用して説明する。 FIG. 1 is a partial longitudinal sectional view of a backup roll device for a rolling mill according to the present invention. FIG. 2A is a partial longitudinal sectional view of a saddle ring and a saddle constituting the backup roll apparatus of the present invention, and FIG. 2B is an enlarged view of a portion P in FIG. 2A. FIG. 3 is a view taken in the direction of the arrow Q in FIG. FIG. 2A is also a cross-sectional view taken along the line XX in FIG. In the configuration of the present invention, the same reference numerals are used for the same components described in the prior art to avoid duplication.

本発明のセンヂミアミル圧延機のバックアップロール装置は、従来のものと同様、外輪１と、内輪２と、これらの外輪１と内輪２との間に配置される保持器４，４と、これらの保持器により保持される複列で複数のころ３，３，・・（ころ列）と、前記内輪外周側ところ列間に配置される浮き案内輪である第１の案内輪（ころ間の案内輪）５，５，・・と、該ころ列に隣接して配置されるサドル６と、で構成される。更に、前記サドル６は、偏心リング７と、サドルリング８と、該サドルリング８を固定するサドル部材９とで構成される。この場合、偏心リング７とサドルリング８には、それぞれ環状のキー溝が設けられリングキー１１を嵌め込んで一体としてある。即ち、図３（Ｂ）に示すように、偏心リング７にキー溝７ｃを形成すると共に、サドルリング８にもキー溝８ｂを形成する。そして、サドルリング８には穴８ａを穿設してここからリングキー１１を嵌め入れ固定する。また、サドルリング８と外輪１との間にはスラストワッシャ１０が配置される。なお、前記外輪１と、内輪２と、これら内・外輪と、保持器４，４と、多列のころ３，３，・・とはころ軸受となる。 The back-up roll device of the Sendmir mill of the present invention, like the conventional one, has an outer ring 1, an inner ring 2, cages 4 and 4 disposed between the outer ring 1 and the inner ring 2, and the holding of these. A plurality of rollers 3, 3,... (Roller row) held by a cage, and a first guide wheel (a guide wheel between the rollers) that is a floating guide wheel disposed between the rows on the outer peripheral side of the inner ring ) 5, 5,... And a saddle 6 arranged adjacent to the roller row. Further, the saddle 6 includes an eccentric ring 7, a saddle ring 8, and a saddle member 9 that fixes the saddle ring 8. In this case, each of the eccentric ring 7 and the saddle ring 8 is provided with an annular key groove, and the ring key 11 is fitted therein so as to be integrated. That is, as shown in FIG. 3B, a key groove 7 c is formed in the eccentric ring 7, and a key groove 8 b is also formed in the saddle ring 8. A hole 8a is formed in the saddle ring 8, and the ring key 11 is fitted and fixed from here. A thrust washer 10 is disposed between the saddle ring 8 and the outer ring 1. The outer ring 1, the inner ring 2, the inner and outer rings, the cages 4 and 4, and the multi-row rollers 3, 3,.

図２（Ａ），（Ｂ）および図３にも示すように、前記サドルの偏心リング７（以下、単に偏心リング７とする）の軸方向端面７ａには、機械加工による環状溝７ｂ，７ｂが形成され、該環状溝７ｂ，７ｂには第２の案内輪（サドルの環状溝に嵌め込む案内輪）５，５が嵌め込まれる。なお、該偏心リング７の端面７ａに形成する環状溝７ｂは、端部に配置する偏心リング７では片側面にのみ形成する。前記第２の案内輪（サドルの環状溝に嵌め込む案内輪）５は、コスト低減を考慮して内輪２の外周側ところ列間に配置されている第１の案内輪（ころ間の案内輪）と同一のものを使用する。この場合、環状溝７ｂへの第２の案内輪（サドルの環状溝に嵌め込む案内輪）５の嵌め込みは、通常「圧入」とされ、交換可能とするが、そのため周方向数箇所に雌ねじを設けてここに雄ねじを螺合させ、引っ張り出すようにしてある。該第２の案内輪（サドルの環状溝に嵌め込む案内輪）５は軸受鋼、炭素鋼、等耐摩耗性に優れた材質のものを使用する。 As shown in FIGS. 2 (A), 2 (B), and 3 as well, the annular end surface 7a of the eccentric ring 7 (hereinafter simply referred to as the eccentric ring 7) of the saddle has annular grooves 7b, 7b formed by machining. Are formed, and second guide wheels (guide wheels fitted into the annular groove of the saddle) 5, 5 are fitted into the annular grooves 7b, 7b. The annular groove 7b formed on the end surface 7a of the eccentric ring 7 is formed only on one side of the eccentric ring 7 disposed at the end. The second guide wheel ( guide wheel fitted into the annular groove of the saddle) 5 is a first guide wheel (guide wheel between rollers ) disposed between the rows on the outer peripheral side of the inner ring 2 in consideration of cost reduction. ) Use the same one. In this case, the fitting of the second guide wheel 5 ( the guide wheel fitted into the annular groove of the saddle) 5 into the annular groove 7b is normally “press-fit” and can be exchanged. It is provided so that a male screw is screwed here and pulled out. 5 (guide wheel fitted on the saddle of the annular groove) said second guide wheel to use a bearing steel, a material with excellent carbon steel, to equal wear resistance.

上記するように、偏心リング７の両端面７ａ或いは片端面７ａに環状溝７ｂを設け、第２の案内輪（サドルの環状溝に嵌め込む案内輪）５を嵌め込むと、第２の案内輪（サドルの環状溝に嵌め込む案内輪）５ところ３の端面３ａとが接触するので、偏心リング７の端面７ａが直接円筒ころ３，３，・・の端面３ａに当接することがない。従って、従来問題となっていた偏心リング端面７ａところ３の端面３ａとの当接による「カジリ」の問題は生じない。また、偏心リング７の端面７ａには接触痕が生じることがなくなる。更に、環状リング５が損傷しても該環状リング５のみを交換すれば済む。また、偏心リング７の端面７ａの環状リング５ところ３との間に異物の噛み込みがあっても損傷するのは偏心リング７かころ３の端面３ａであり、安価に交換することができる。 As described above, when the annular groove 7b is provided in the both end surfaces 7a or one end surface 7a of the eccentric ring 7 and the second guide wheel ( the guide wheel fitted into the annular groove of the saddle) 5 is fitted, the second guide wheel is provided. (Guide wheel fitted into the annular groove of the saddle) 5 Since the three end surfaces 3a are in contact with each other, the end surface 7a of the eccentric ring 7 is not in direct contact with the end surfaces 3a of the cylindrical rollers 3, 3,. Therefore, the problem of “galling” due to the contact of the eccentric ring end face 7a and the end face 3a with the end face 3a, which has been a problem, does not occur. Further, no contact mark is generated on the end surface 7 a of the eccentric ring 7. Furthermore, if the annular ring 5 is damaged, only the annular ring 5 needs to be replaced. Further, even if foreign matter is caught between the annular ring 5 and 3 of the end face 7a of the eccentric ring 7, it is the end face 3a of the eccentric ring 7 roller 3 that can be replaced at a low cost.

次に、本発明のバックアップロール装置の偏心リング７は、一定期間使用した後にその端面７ａに環状溝７ｂを設けるようにしても良い。
図４（Ａ）は、前記バックアップロール装置のサドルのサドルリング８と偏心リング７の一部縦断面図であるが、この図に示すように、偏心リング７の端面７ａには、第２の案内輪（サドルの環状溝に嵌め込む案内輪）５を嵌め込む環状溝７ｂを設けないまま一定期間使用すると、偏心リング７の端面７ａと、ころ３の端面３ａとの接触によりカジリ或いは接触痕ができる。そして該偏心リング７の端面７ａところ３の端面３ａとの接触、或いは異物の噛み込みにより偏心リング７の端面７ａにカジリ等の損傷が生じたとき、初めて図４（Ｂ）に示すように、該偏心リング７の端面７ａに環状溝７ｂを形成して第２の案内輪（サドルの環状溝に嵌め込む案内輪）５を嵌め込んでも良い。 Next, the eccentric ring 7 of the backup roll apparatus of the present invention may be provided with an annular groove 7b on its end surface 7a after being used for a certain period.
FIG. 4 (A) is a partial longitudinal sectional view of the saddle ring 8 and the eccentric ring 7 of the saddle of the backup roll device. As shown in this figure, the end surface 7a of the eccentric ring 7 has a second surface 7a . Guide wheel ( Guide wheel fitted into the annular groove of the saddle) When used for a certain period without providing the annular groove 7b into which the guide ring 5 is fitted, the contact between the end surface 7a of the eccentric ring 7 and the end surface 3a of the roller 3 causes galling or contact marks. Can do. Then, when the end surface 7a of the eccentric ring 7 is in contact with the end surface 3a of the end portion 3 or the end surface 7a of the eccentric ring 7 is damaged due to the biting of foreign matter, for example, as shown in FIG. An annular groove 7b may be formed on the end surface 7a of the eccentric ring 7 and a second guide wheel (guide wheel fitted into the annular groove of the saddle) 5 may be fitted.

本発明のように、偏心リング７を一定期間使用した後、例えば修理や新品のころ軸受と交換する際、端面７ａに、環状溝７ｂを設けて第２の案内輪（サドルの環状溝に嵌め込む案内輪）５を嵌め込むと、全く新しい状態で使用するのと同様に使用することができる。特に、大幅なコストアップとなることもなく、交換した新品の軸受は全く新しいサドル６の偏心リング７の場合と同様何らの悪影響も受けることなく使用することができる。或いは新品のころ軸受と交換する必要がない場合でも保守点検時に偏心リング７の端面７ａに環状溝７ｂを形成して第２の案内輪（サドルの環状溝に嵌め込む案内輪）５を嵌め込むようにしても良い。このような保守改良によれば、バックアップロール装置の長寿命化を図ることが出来るだけでなく、コスト低減にもなり、極めて便利となる。 As in the present invention, after the eccentric ring 7 has been used for a certain period of time, for example, when it is repaired or replaced with a new roller bearing, an annular groove 7b is provided on the end surface 7a to fit the second guide wheel (the annular groove of the saddle). Guide wheel to be inserted ) When 5 is fitted, it can be used in the same manner as in a completely new state. In particular, the replaced new bearing can be used without any adverse effect as in the case of the eccentric ring 7 of the completely new saddle 6 without any significant increase in cost. Alternatively, even when it is not necessary to replace with a new roller bearing, an annular groove 7b is formed in the end face 7a of the eccentric ring 7 during maintenance and inspection, and a second guide wheel (guide wheel fitted into the annular groove of the saddle) 5 is fitted. You may make it. According to such maintenance and improvement, not only can the life of the backup roll apparatus be extended, but also the cost is reduced, which is extremely convenient.

なお、前記偏心リング７の端面７ａに形成した環状溝７ｂには、同一のバックアップロール装置で使用される第２の案内輪（サドルの環状溝に嵌め込む案内輪）５で良いが、同じ第２の案内輪（サドルの環状溝に嵌め込む案内輪）５でなくても、別途該環状溝７ｂに嵌め込む（圧入する）ため、軸受鋼や高炭素鋼等の耐摩耗性に優れたリングを製作して使用しても良い。また、本発明では円筒型のころ３の端面３ａとサドル６の偏心リング７の端面７ａとの接触によるカジリや摩耗痕が発生する場合について説明したが、円錐ころやタイコ型のころを使用する場合のサドルと軸受内輪の端面やころ端面等との接触の場合にも応用することができる。 The annular groove 7b formed on the end surface 7a of the eccentric ring 7 may be a second guide wheel ( a guide wheel fitted into the annular groove of the saddle) 5 used in the same backup roll device . No. 2 guide wheel ( guide wheel fitted into the annular groove of the saddle) Even if it is not 5, it is separately fitted (press-fitted) into the annular groove 7b, so that it has excellent wear resistance such as bearing steel and high carbon steel May be produced and used. Further, in the present invention, the case where galling or wear marks are generated due to the contact between the end surface 3a of the cylindrical roller 3 and the end surface 7a of the eccentric ring 7 of the saddle 6 has been described. However, tapered rollers or Tyco rollers are used. This can also be applied to the case where the saddle is in contact with the end face of the bearing inner ring, the end face of the roller, or the like.

本発明の圧延機用バックアップロール装置の一部縦断面図である。It is a partial longitudinal cross-sectional view of the backup roll apparatus for rolling mills of this invention. 図２（Ａ）は、本発明の圧延機用バックアップロール装置を構成するサドルリングとサドルの一部縦断面図であり且つ図３（Ａ）のＸーＸ矢視断面図である。図２（Ｂ）は図２（Ａ）のＰ部拡大図である。FIG. 2A is a partial longitudinal sectional view of a saddle ring and a saddle constituting a backup roll device for a rolling mill according to the present invention, and is a sectional view taken along arrows XX in FIG. FIG. 2B is an enlarged view of a portion P in FIG. 図３（Ａ）は、図２（Ａ）のＱ矢視図であり、図３（Ｂ）は、図３（Ａ）のＹーＹ矢視断面図である。3A is a view taken along the arrow Q in FIG. 2A, and FIG. 3B is a cross-sectional view taken along the line YY in FIG. 3A. 図４（Ａ）は、本発明の圧延機用バックアップロール装置のサドルのサドルリングと偏心リングの一部縦断面図であって、一定期間使用するまでの図であり、図４（Ｂ）は、一定期間使用後に端面に環状溝を形成して案内輪を嵌め込んだサドルリングと偏心リングの一部縦断面図である。FIG. 4 (A) is a partial longitudinal sectional view of a saddle saddle ring and an eccentric ring of a backup roll device for a rolling mill according to the present invention, and is a view until it is used for a certain period of time, and FIG. FIG. 5 is a partial longitudinal sectional view of a saddle ring and an eccentric ring in which an annular groove is formed on an end face after use for a certain period and a guide ring is fitted. 従来の圧延機用バックアップロール装置のサドルのサドルリングの一部縦断面図である。 It is a partial longitudinal cross-sectional view of the saddle ring of the saddle of the conventional backup roll apparatus for rolling mills .

１ 外輪
２ 内輪
３ ころ
４ 保持器
５ 第1の案内輪（ころ間の案内輪）
５ 第2の案内輪（サドルの環状溝に嵌め込む案内輪）
６ サドル
７ 偏心リング
７ａ 偏心リング端面
７ｂ 環状溝
８ サドルリング
９ サドル部材
１０ スラストワッシャ
１１ リングキー
1 Outer ring 2 Inner ring 3 Roller 4 Cage
5 First guide wheel (guide wheel between rollers)
5 Second guide wheel (guide wheel that fits into the annular groove of the saddle)
6 Saddle 7 Eccentric ring 7a Eccentric ring end face 7b Annular groove 8 Saddle ring 9 Saddle member 10 Thrust washer 11 Ring key

Claims (2)

外輪と、内輪と、内外輪間に保持器により保持される複列で複数のころより成るころ軸受と、前記内輪外周側ところ列間との間に配置される第１の案内輪と、ころ列の一端側に設けられ偏心リングとサドルリングとを備えたサドルと、より成る圧延機用バックアップロール装置において、
前記サドルの偏心リングの軸方向端面に環状溝を形成し、該環状溝に前記内輪外周側ところ列間との間に配置される第１の案内輪と同一に形成された第２の案内輪を嵌め込むことを特徴とする圧延機用バックアップロール装置。 An outer ring, an inner ring, a roller bearing composed of a plurality of rollers in a double row held by a cage between the inner and outer rings, a first guide wheel disposed between the inner ring outer peripheral side and the row, and rollers In a backup roll device for a rolling mill, comprising a saddle with an eccentric ring and a saddle ring provided on one end side of the row,
An annular groove is formed in the axial end surface of the eccentric ring of the saddle, and a second guide wheel formed in the annular groove in the same manner as the first guide wheel disposed between the outer peripheral side of the inner ring and between the rows. A backup roll device for a rolling mill, wherein 外輪と、内輪と、内外輪間に保持器により保持される複列で複数のころより成るころ軸受と、前記内輪外周側ところ列間との間に配置される第１の案内輪と、ころ列の一端側に設けられ偏心リングとサドルリングとを備えたサドルと、より成る圧延機用バックアップロール装置において、
前記サドルの偏心リングの軸方向端面に環状溝を形成し、該環状溝に前記内輪外周側ところ列間との間に配置される第１の案内輪と異なる鋼製リングを嵌め込むことを特徴とする圧延機用バックアップロール装置。 An outer ring, an inner ring, a roller bearing composed of a plurality of rollers in a double row held by a cage between the inner and outer rings, a first guide wheel disposed between the inner ring outer peripheral side and the row, and rollers In a backup roll device for a rolling mill, comprising a saddle with an eccentric ring and a saddle ring provided on one end side of the row ,
An annular groove formed in the axial end surface of the eccentric ring before SL saddle, the fitting the first guide wheel and different steel ring disposed between between the the annular groove the inner ring outer peripheral side where column A backup roll device for a rolling mill.
JP2004270682A 2004-09-17 2004-09-17 Backup roll device for rolling mill Expired - Fee Related JP4876381B2 (en)

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JP5148314B2 (en) * 2008-02-20 2013-02-20 株式会社ジェイテクト Backup roll device for multi-high mill
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JP2002106555A (en) * 2000-09-29 2002-04-10 Ntn Corp Bearing for backup
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