JP3682594B2 - Roll neck bearing sealing device and rolling mill roll using the same - Google Patents

Roll neck bearing sealing device and rolling mill roll using the same Download PDF

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Publication number
JP3682594B2
JP3682594B2 JP05916498A JP5916498A JP3682594B2 JP 3682594 B2 JP3682594 B2 JP 3682594B2 JP 05916498 A JP05916498 A JP 05916498A JP 5916498 A JP5916498 A JP 5916498A JP 3682594 B2 JP3682594 B2 JP 3682594B2
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Prior art keywords
roll
rolling mill
sealing device
rings
roll neck
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JPH11254010A (en
Inventor
和也 藤本
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Koyo Seiko Co Ltd
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Koyo Seiko Co Ltd
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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
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/38—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 both radial and axial load with two or more rows of rollers
    • F16C19/383—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 both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/388—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 both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with four rows, i.e. four row tapered roller 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
    • 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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、圧延機のロ−ルネック用軸受の密封装置、特に、少なくとも２個の内輪と、多列の円すいころ、又は円筒ころを有し、内輪間座を廃止して軸受負荷容量を向上させた圧延機のロ−ルネック用軸受の密封装置と、これを用いた圧延機のロールに関する。
【０００２】
【従来の技術】
近年の圧延機においては、圧延精度の向上のために多量の冷却水が使用され、、また、圧延荷重や圧延トルク低減のため圧延ロ−ルと被加工材料間に潤滑油（圧延油）が使用される。そしてこれらの冷却水や圧延油等が圧延ロ−ルのロ−ルネック用軸受部に多量にかかり、一部軸受内部に侵入する。このような冷却水、圧延油、スケ−ル等が軸箱内の軸受部に侵入すると、軸受寿命を大幅に短縮させかつ振動の原因となって圧延精度を劣化させる。かかる不都合を防止するため従来から軸受部を密封する種々の工夫がなされている（特公昭５５−２２６４８号、特公昭５４−６９６３９号等）。しかし、密封装置は、軸受及びロ−ルの取扱上、ロ−ルネックと軸受内輪とはル−ズフィットに嵌合されているものであり、冷却水や圧延油の侵入を防ぎ得なかったり、また、軸受用潤滑剤の漏出を阻止できず、或いはすべり運動による内輪端面の摩耗を促進するという問題があった。
【０００３】
上記するような従来技術の問題点を解決するため、図３に示すような、ロ−ルネック用軸受の密封装置が提案されている（実公平１−１４３２３号）。
このロ−ルネック用軸受の密封装置は、外輪１１と、これら外輪１１と外輪１１との間に配置される外輪間座１２と、内輪１４と、円すいころ１３と、保持器１５と、内輪間座１６と、シ−ル保持環１７、等で構成される。この密封装置では、内輪１４，１４には、内輪間座１６に接する端部外周に円筒部１４ａ，１４ａを設け、前記内輪間座１６を、内輪１４の円筒部１４ａの外周に臨む円筒部１６ａを有する断面Ｔ字形の環状体に形成し、該内輪間座１６の円筒部１６ａに、その内外周面を被覆するシ−ル部材１９を装着して、該シ−ル部材１９の内周面に設けたシ−ルリップ１９ａを内輪円筒部１４ａ外周面に摺接させた構成とするものである。
【０００４】
【発明が解決しようとする課題】
しかしながら、図３に示すような上記構成のロ−ルネック用軸受の密封装置は、内輪間座１６が特殊形状であるため加工が煩雑であり、シ−ル構造も複雑となって組立や取扱が難しいという問題があった。
【０００５】
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、部品点数を低減して密封構造を簡素化し、組立やメインテナンスが容易であり、且つ負荷容量も大きくすることのできる圧延機のロ−ルネック用軸受の密封装置および圧延機用ロールを提供することを目的としている。
【０００６】
【課題を解決するための手段】
即ち、この発明は、上記する課題を解決するために、請求項１に記載の発明は、複数個の外輪（１）とこれら複数個の外輪間に配置される間座（２）と軸方向に隣接するとともに内周面がロールネックとルーズフィットされる少なくとも２個の内輪（４）と、を備えた圧延機のロ−ルネック用軸受の密封装置において、
前記２つの内輪の対向面側端部に円筒部（４ａ，４ａ）を形成して当該円筒部の側面同士を突き合わせて配置すると共に、これら２つの円筒部の突き合わせ部側に周段部を形成し、更に、環状のリブ付芯金（６ａ）とこれに固定される環状の弾性シ−ル（６ｂ）とより成り且つ隣接するそれぞれの内輪の周段部（４ｅ，４ｅ）の外周面と側面（４ｆ，４ｆ）のそれぞれに摺接する少なくとも２つのラジアルリップ部（６ｂ1 ，６ｂ2 ）と少なくとも２つのサイドリップ部（６ｂ3 ，６ｂ4 ）とが該弾性シール（６ｂ）に形成してあるシ−ル部材（６）を、前記２つの周段部（４ｅ，４ｅ）に跨がるよう配置することを特徴とする。
【０００７】
また、請求項２に記載の発明は、ロールと、複数個の外輪（１）と、少なくとも２個の内輪（４，４）を備え、これらの内輪（４，４）の内周面が前記ロールのロールネックにルーズフィットする転がり軸受を備える圧延機用ロールであって、前記２つの内輪（４，４）の対向面側端部に配置される圧延機のロ−ルネック用軸受の密封装置が、請求項１に記載の密封装置を用いたものであることを特徴としている。
【０００８】
【発明の実施の形態】
以下、この発明の具体的実施の形態について図面を参照しながら説明する。
図１は、この発明の圧延機のロ−ルおよびロールネック用軸受の密封装置の一部断面図であり、図２は図１のＰ部拡大図である。この圧延機のロ−ルネック用軸受の密封装置は、複数に分割した外輪１と、これら外輪１と外輪１との間に配置される外輪間座２と、２個に分割して配置した内輪４と、これら外輪１と内輪４との間に配置された４列の円すいころ３と、これらの円すいころ３を保持する保持器５と、で構成される。そして、更に、前記内輪４と内輪４との内側に設けた円筒部４ａ，４ａの端面（４ｇ，４ｇ）どうしを突き合わせ接合し且つこれら２つの円筒部４ａ，４ａの両外周に跨がって嵌合するシ−ル部材６が配置されている。尚、前記内輪４の内周面４ｂには潤滑剤溜用の溝４ｃ，４ｃ，・・が設けてある。
【０００９】
また、前記外輪１の外部両側端部には、それぞれシ−ル保持環７，７を同心配置して取り付け、且つこれらシ−ル保持環７，７に保持された密封タイプのオイルシ−ル８，８が配置されている。そしてこれらオイルシ−ル８，８は、芯金に弾性シ−ル部材を焼付けて構成され、芯金部はシ−ル保持環７の内周面に圧入嵌合され、弾性シ−ル部は内輪端部に設けた円筒部４ｄの外周面に摺動接触させるようにしてある。
【００１０】
上記するように、前記２つの内輪４，４の突き合わせ側には、円筒部４ａ，４ａが形成され、更に、これらの円筒部４ａ，４ａには、周段部４ｅ，４ｅが形成されている。そして、これら２つの周段部４ｅ，４ｅに跨がるようにシ−ル部材６が嵌合固定されている。該シ−ル部材６は、芯金６ａに弾性シ−ル６ｂを焼付固定したものである。そして、このシ−ル部材６の弾性シ−ル６ｂには、前記円筒部４ａ，４ａに設けた周段部４ｅ，４ｅの外周表面に摺接させるラジアルリップ部６ｂ1 ，６ｂ2 と周段部４ｅ，４ｅの側面（４ｆ，４ｆ）に摺接させるサイドリップ部６ｂ3 ，６ｂ4 が形成されている。ただし、前記シ−ル部材６には、これらラジアルリップ部６ｂ1 ，６ｂ2 やサイドリップ部６ｂ3 ，６ｂ4 等は必ずしも形成する必要はなく、他のリップ形状、例えば多数の凹凸状のものとしてもよい。
【００１１】
上記構成のこの圧延機のロ−ルネック用軸受の密封装置において、２つの内輪４，４とロ−ルネック（図示省略）とはル−ズフィットであるが、内輪中心部の密封装置部分は、組立時これら内輪４，４の一方の周段部４ｅにシ−ル部材６を嵌め入れ、他方の周段部４ｅを突き合わせて嵌め入れるだけで簡単に組み込むことができる。また、該シ−ル部材６には、ラジアルリップ部６ｂ1 ，６ｂ2 とサイドリップ部６ｂ3 ，６ｂ4 とが設けられて二重シ−ル構造となっているので密封効果も大きくなる。更に、従来のように間座１６（図３参照）を設けていないのでその分軸受としての負荷容量も大きくなる。
【００１２】
【発明の効果】
以上詳述したように、この発明の圧延機のロ−ルネック用軸受の密封装置によれば、従来必要であった内輪間座を廃止し部品点数を低減することができる。また、この密封装置では、密封構造も単純化することができるので組立やメインテナンスも容易となる。更に、密封性能を向上させ且つ軸受容量を大きくすることができる。
【図面の簡単な説明】
【図１】 この発明のロールネック用軸受の密封装置およびこの密封装置を用いた延機のロ−ルの一部断面図である。
【図２】 図１のＰ部拡大図である。
【図３】 従来の圧延機のロ−ルネック用軸受の密封装置の一部断面図である。
【符号の説明】
１ 外輪
２ 外輪間座
３ 円すいころ
４ 内輪
４ａ 円筒部
４ｅ 周段部
４ｆ 側面
５ 保持器
６ シ−ル部材
６ａ 芯金
６ｂ 弾性シ−ル
６ｂ1,６ｂ2 ラジアルリップ部
６ｂ3,６ｂ4 サイドリップ部[0001]
BACKGROUND OF THE INVENTION
The present invention has a sealing device for a roll neck bearing of a rolling mill, in particular, has at least two inner rings and multi-row tapered rollers or cylindrical rollers, and eliminates an inner ring spacer to improve bearing load capacity. The present invention relates to a roll neck bearing sealing device for a rolled mill and a roll of the rolling mill using the same .
[0002]
[Prior art]
In recent rolling mills, a large amount of cooling water is used to improve rolling accuracy, and lubricating oil (rolling oil) is used between the rolling roll and the work material to reduce rolling load and rolling torque. used. A large amount of these cooling water, rolling oil, and the like is applied to the roll neck bearing portion of the rolling roll and partly enters the bearing. If such cooling water, rolling oil, scale, or the like enters the bearing portion in the axle box, the bearing life is greatly shortened and the rolling accuracy is deteriorated due to vibration. In order to prevent such inconvenience, various measures have been conventionally taken to seal the bearing (Japanese Patent Publication No. 55-22648, Japanese Patent Publication No. 54-69639, etc.). However, in the handling of the bearing and the roll, the sealing device is a loose fit between the roll neck and the bearing inner ring, and cannot prevent the intrusion of cooling water or rolling oil, Further, there has been a problem that the leakage of the lubricant for the bearing cannot be prevented or the wear of the inner ring end face due to the sliding motion is promoted.
[0003]
In order to solve the above-described problems of the prior art, a roll neck bearing sealing device as shown in FIG. 3 has been proposed (Act No. 1-14323).
The roller neck bearing sealing device includes an outer ring 11, an outer ring spacer 12 disposed between the outer ring 11 and the outer ring 11, an inner ring 14, a tapered roller 13, a cage 15, and an inner ring. The seat 16 and the seal holding ring 17 are configured. In this sealing device, the inner rings 14, 14 are provided with cylindrical portions 14 a, 14 a on the outer periphery of the end contacting the inner ring spacer 16, and the inner ring spacer 16 faces the outer periphery of the cylindrical portion 14 a of the inner ring 14. The seal member 19 is attached to the cylindrical portion 16a of the inner ring spacer 16 so as to cover the inner and outer peripheral surfaces thereof, and the inner peripheral surface of the seal member 19 is formed. The seal lip 19a provided on the inner ring is in sliding contact with the outer peripheral surface of the inner ring cylindrical portion 14a.
[0004]
[Problems to be solved by the invention]
However, the roll neck bearing sealing device having the above-described configuration as shown in FIG. 3 is complicated to process because the inner ring spacer 16 has a special shape, and the seal structure is complicated and easy to assemble and handle. There was a problem that it was difficult.
[0005]
The present invention has been made to cope with the above-described problems, and is a rolling mill that can reduce the number of parts, simplify the sealing structure, can be easily assembled and maintained, and can increase the load capacity. It is an object of the present invention to provide a roll neck bearing sealing device and a rolling mill roll .
[0006]
[Means for Solving the Problems]
That is, in order to solve the above-described problems, the present invention provides a plurality of outer rings (1) and spacers (2) disposed between the plurality of outer rings and an axial direction. A roll neck bearing sealing device for a rolling mill comprising: at least two inner rings (4) that are adjacent to each other and whose inner peripheral surface is loose-fitted with a roll neck ;
The two cylindrical portions on opposite surface side end portion of the inner ring (4a, 4a) to form together with placing against the side surfaces of the cylindrical portion, forming a Shudan portion in the abutting portion of the two cylindrical portions and, further, annular elastic sheet fixed thereto a core metal with an annular rib (6a) - outer peripheral surface of the peripheral step portion of the each of the inner ring adjacent Le (6b) and and Ri more adult (4e, 4e) And at least two radial lip portions (6b 1 , 6b 2 ) and at least two side lip portions (6b 3 , 6b 4 ) slidably contacting each of the side surfaces (4f, 4f) are formed on the elastic seal (6b). The seal member (6) is arranged so as to straddle the two peripheral steps (4e, 4e).
[0007]
The invention according to claim 2 includes a roll, a plurality of outer rings (1), and at least two inner rings (4, 4), and the inner peripheral surface of these inner rings (4, 4) Rolling mill roll provided with a rolling bearing loosely fitting to the roll neck of the roll, and a sealing device for the roll neck bearing of the rolling mill disposed at the opposite end portions of the two inner rings (4, 4) Is characterized by using the sealing device according to claim 1.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
Figure 1 b of the rolling mill of the present invention - Ri partial sectional view der the sealing device le and roll neck bearings, and FIG. 2 is a P portion enlarged view of FIG. The rolling neck bearing sealing device of this rolling mill includes an outer ring 1 divided into a plurality of parts, an outer ring spacer 2 arranged between the outer ring 1 and the outer ring 1, and an inner ring divided into two parts. 4, four rows of tapered rollers 3 disposed between the outer ring 1 and the inner ring 4, and a cage 5 that holds these tapered rollers 3. Further, the end faces (4g, 4g) of the cylindrical portions 4a, 4a provided inside the inner ring 4 and the inner ring 4 are butt-joined and straddled across both outer circumferences of the two cylindrical portions 4a, 4a. A seal member 6 that fits together is disposed. In addition, grooves 4c, 4c,... For storing lubricant are provided on the inner peripheral surface 4b of the inner ring 4.
[0009]
Further, seal holding rings 7 and 7 are concentrically attached to both ends of the outer ring 1 on the outside, and a sealed oil seal 8 held by these seal holding rings 7 and 7 is provided. , 8 are arranged. These oil seals 8 and 8 are formed by baking an elastic seal member on the core metal, the core metal part is press-fitted into the inner peripheral surface of the seal holding ring 7, and the elastic seal part is The outer peripheral surface of the cylindrical portion 4d provided at the inner ring end is slidably contacted.
[0010]
As described above, the cylindrical portions 4a and 4a are formed on the abutting side of the two inner rings 4 and 4, and the circumferential step portions 4e and 4e are formed in the cylindrical portions 4a and 4a. . The seal member 6 is fitted and fixed so as to straddle the two peripheral step portions 4e and 4e. The seal member 6 is obtained by baking and fixing an elastic seal 6b to a metal core 6a. The elastic seal 6b of the seal member 6 includes radial lip portions 6b 1 and 6b 2 that are slidably brought into contact with the outer peripheral surfaces of the peripheral step portions 4e and 4e provided on the cylindrical portions 4a and 4a. Side lip portions 6b 3 and 6b 4 are formed to be brought into sliding contact with the side surfaces (4f and 4f) of the portions 4e and 4e. However, the radial lip portions 6b 1 and 6b 2 and the side lip portions 6b 3 and 6b 4 are not necessarily formed on the seal member 6, but other lip shapes, for example, a plurality of uneven shapes. It is good.
[0011]
In the roll neck bearing sealing device of the rolling mill having the above-described configuration, the two inner rings 4 and 4 and the roll neck (not shown) are loose-fit, but the sealing device portion at the center of the inner ring is: At the time of assembly, the seal member 6 can be fitted into one of the peripheral step portions 4e of the inner rings 4 and 4, and the other peripheral step portion 4e can be brought into contact with each other to be easily assembled. Further, since the seal member 6 is provided with radial lip portions 6b 1 and 6b 2 and side lip portions 6b 3 and 6b 4 to form a double seal structure, the sealing effect is also increased. Further, since the spacer 16 (see FIG. 3) is not provided as in the prior art, the load capacity as a bearing is increased accordingly.
[0012]
【The invention's effect】
As described in detail above, according to the rolling neck bearing sealing device of the rolling mill of the present invention, the conventionally required inner ring spacer can be eliminated and the number of parts can be reduced. Further, in this sealing device, the sealing structure can be simplified, so that assembly and maintenance are facilitated. Furthermore, the sealing performance can be improved and the bearing capacity can be increased.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a roll neck bearing sealing device and a roll of a roll using the sealing device according to the present invention.
FIG. 2 is an enlarged view of a portion P in FIG.
FIG. 3 is a partial cross-sectional view of a sealing device for a roll neck bearing of a conventional rolling mill.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer ring 2 Outer ring spacer 3 Tapered roller 4 Inner ring 4a Cylindrical part 4e Circumferential step part
4f side surface 5 cage 6 seal member 6a cored bar 6b elastic seal 6b 1, 6b 2 radial lip 6b 3, 6b 4 side lip

Claims (2)

複数個の外輪とこれら複数個の外輪間に配置される間座と軸方向に隣接するとともに内周面がロールネックとルーズフィットされる少なくとも２個の内輪と、を備えた圧延機のロ−ルネック用軸受の密封装置において、
前記２つの内輪の対向面側端部に円筒部を形成して当該円筒部の側面同士を突き合わせて配置すると共に、これら２つの円筒部の突き合わせ部側に周段部を形成し、更に、環状のリブ付芯金とこれに固定される環状の弾性シ−ルとより成り且つ隣接するそれぞれの内輪の周段部の外周面と側面のそれぞれに摺接する少なくとも２つのラジアルリップ部と少なくとも２つのサイドリップ部とが該弾性シールに形成してあるシ−ル部材を、前記２つの周段部に跨がるよう配置することを特徴とする圧延機のロ−ルネック用軸受の密封装置。A rolling mill roll comprising a plurality of outer rings, and spacers disposed between the plurality of outer rings, and at least two inner rings that are axially adjacent and have an inner peripheral surface loosely fitted to a roll neck. In the sealing device for Lunec bearings,
Wherein the surface facing ends of the two inner rings to form a cylindrical portion with placing against the side surfaces of the cylindrical portion, to form a Shudan portion in the abutting portion of the two cylindrical portions, further, cyclic annular elastic sheet which is secured thereto and ribbed core metal - Le more formed Ri and at least two radial lip portion to sliding contact with the respective outer peripheral surface and the side surface of the peripheral step portion of the each of the inner ring adjacent to at least 2 A sealing device for a roll neck bearing of a rolling mill, wherein a seal member formed by two side lip portions on the elastic seal is disposed so as to straddle the two peripheral step portions. ロールと、複数個の外輪と、少なくとも２個の内輪を備え、これらの内輪の内周面が前記ロールのロールネックにルーズフィットする転がり軸受を備える圧延機用ロールであって、前記２つの内輪の対向面側端部に配置される圧延機のロ−ルネック用軸受の密封装置が、請求項１に記載の密封装置を用いた圧延機用ロ−ル。A roll for a rolling mill comprising a roll, a plurality of outer rings, and at least two inner rings, and a rolling bearing having an inner peripheral surface of these inner rings loosely fitted to a roll neck of the roll, the two inner rings A rolling mill roll using the sealing device according to claim 1, wherein the sealing device for the roll neck bearing of the rolling mill is disposed at the opposite surface side end of the rolling mill.
JP05916498A 1998-03-11 1998-03-11 Roll neck bearing sealing device and rolling mill roll using the same Expired - Fee Related JP3682594B2 (en)

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JP05916498A JP3682594B2 (en) 1998-03-11 1998-03-11 Roll neck bearing sealing device and rolling mill roll using the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4187365B2 (en) * 1999-09-27 2008-11-26 Ｎｔｎ株式会社 Drive wheel support device
JP2003097724A (en) * 2001-09-26 2003-04-03 Nok Corp Sealing device
JP5022000B2 (en) 2006-10-24 2012-09-12 株式会社ジェイテクト Sealing device and rolling bearing device
CN108603532B (en) * 2016-02-02 2020-07-31 株式会社捷太格特 Sealing member for rolling bearing and rolling bearing device

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