JP3604590B2 - Roll support device for continuous casting equipment - Google Patents

Roll support device for continuous casting equipment Download PDF

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Publication number
JP3604590B2
JP3604590B2 JP15961699A JP15961699A JP3604590B2 JP 3604590 B2 JP3604590 B2 JP 3604590B2 JP 15961699 A JP15961699 A JP 15961699A JP 15961699 A JP15961699 A JP 15961699A JP 3604590 B2 JP3604590 B2 JP 3604590B2
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Japan
Prior art keywords
sealing means
support
continuous casting
roll
ring
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JP15961699A
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JP2000343190A (en
Inventor
尚久 赤澤
宣哉 鈴木
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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
    • 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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements

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  • Rolling Contact Bearings (AREA)
  • Continuous Casting (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、連続鋳造設備でのスラブ案内に用いられる分割型ロールを支持する装置に関する。
【０００２】
【従来の技術】
連続鋳造設備に用いられる分割型ロールの全体構成について図１に示す。この図１は、本発明の実施形態の説明で引用しているので、ここでの説明は必要最小限にとどめる。
【０００３】
図中、１はロールの全体、２，３は分割ロール、４ａ，４ｂ，５ａ，５ｂは支持台である。この分割ロール２，３上を図示しないスラブが通過する。
【０００４】
両分割ロール２，３の内側支軸部２ａ，３ａを支持する部分の従来例を図５に示して説明する。
【０００５】
分割ロール２，３の各内側支軸部２ａ，３ａは、内側の各支持台４ａ，５ａに対して複列球面ころ軸受などの転がり軸受８，９を介して回転自在に支持されている。この転がり軸受８，９は、支持台４ａ，５ａに設けられる潤滑油路１０，１１を介してグリースあるいは潤滑油が供給されるようになっている。
【０００６】
そして、ロール１上をスラブが通過する際に、スラブを冷却するために、スラブとロール１に直接冷却水がかけられる。この冷却水が、分割ロール２，３の内側の転がり軸受８，９の内部空間ｃに対して、侵入することを防止するために、下記するような密封手段が用いられている。
【０００７】
前述の密封手段は、支持台４ａ，５ａの内側部にボルトにより取り付けられる環体１５，１６と、この環体１５，１６の内周部に装着されて支軸部２ａ，３ａの外周面に摺接する接触タイプシール１７，１８とを含む構成である。
【０００８】
【発明が解決しようとする課題】
上記従来例では、転がり軸受８，９を密封する密封手段として、軸方向の寸法が比較的大きい接触タイプシール１７，１８を使用しているために、環体１５，１６自体の軸方向幅も大きいものになり、両転がり軸受８，９の間の間隔を大きく確保する必要があった。
【０００９】
そのために、両分割ロール２，３の胴長寸法を大きくしてそれらの対向間隔Ｔを小さくするには、各転がり軸受８，９の軸方向寸法を小さくする必要があるので、転がり軸受８，９の荷重負荷能力が小さくなり、軸受寿命が低下することになる。一方、各転がり軸受８，９の軸方向寸法を大きく確保した場合、両分割ロール２，３の胴長寸法を小さくしてそれらの対向間隔Ｔを大きくする必要があるので、ロール１において案内対象であるスラブとの有効接触幅が小さくなってしまうなど、接触圧が増大してロール１の耐荷重性が低下することになる。
【００１０】
このような事情に鑑み、本発明では、連続鋳造設備用ロール支持装置において、転がり軸受の密封手段に関する軸方向占有幅を可及的に小さくすることを目的としている。
【００１１】
【課題を解決するための手段】
請求項１の発明にかかる連続鋳造設備用ロール支持装置は、同軸状に突き合わせ配置された一対の分割ロールの対向する各支軸部を転がり軸受を介して支持台に個別に支持する連続鋳造設備用ロール支持装置であって、前記各支持台の対向部分に、各支軸部周辺を外部から密封する密封手段が設けられ、この密封手段が、前記各支持台の対向する内側部にそれぞれ連結される２つの外側環体と、これら両外側環体の内周部にまたがって嵌合される内側環体と、前記２つの外側環体と内側環体との各嵌合領域にそれぞれ介装される２つのＯリングとを含む。
【００１２】
このような構成では、各転がり軸受を外部から密封する密封手段について、従来例の接触タイプシールに比べて軸方向寸法が小さいＯリングを用いているから、密封手段全体の軸方向占有幅を縮小できるようになる。
【００１３】
請求項２の発明にかかる連続鋳造設備用ロール支持装置は、同軸状に突き合わせ配置された一対の分割ロールの対向する各支軸部を転がり軸受を介して支持台に個別に支持するもので、前記各支持台の対向部分に、各支軸部周辺を外部から密封する密封手段が設けられ、この密封手段が、前記各支持台の対向する内側部にそれぞれ連結されかつ互いに径方向内外に嵌合する筒部をそれぞれ有する２つの外側環体と、これら両外側環体の各筒部の嵌合領域に介装されるＯリングとを含む。
【００１４】
このような構成では、上記請求項１に作用に加えて、請求項１よりも密封手段について内側環体を不要化するとともに、Ｏリングの必要数を少なくしているから、密封手段の構成部品点数ならびに組立工数を減らせるようになる。
【００１５】
【発明の実施の形態】
以下、本発明の詳細を図面に示す実施形態に基づいて説明する。
【００１６】
図１ないし図３に本発明の一実施形態を示している。図１は、連続鋳造設備用ロール支持装置の全体正面図、図２は、図１での要部を切り欠いて示す正面図、図３は、図２の内側支持部分の拡大図である。
【００１７】
図示例のロール１は、同軸状に突き合わせ配置された一対の分割ロール２，３で構成されており、これらの分割ロール２，３の内外の支軸部２ａ，２ｂ，３ａ，３ｂは、それぞれ支持台４ａ，４ｂ，５ａ，５ｂに転がり軸受８，９，１９を介して個別に支持されている。この分割ロール２，３上を図示しないスラブが通過する。
【００１８】
なお、両分割ロール２，３の内側支軸部２ａ，３ａを支持する転がり軸受８，９は、複列球面ころ軸受などとされ、また、両分割ロール２，３の外側支軸部２ｂ，３ｂを支持する転がり軸受１９は、単列ころ軸受などとされている。
【００１９】
このうち、内側に配設される転がり軸受８，９には、支持台４ａ，５ａに設けられる潤滑油路１０，１１を介して、また、外側に配設される転がり軸受１９には、支持台４ｂ，５ｂに設けられる潤滑油路２０を介して、グリースあるいは潤滑油が供給されるようになっている。
【００２０】
そして、ロール１上をスラブが通過する際に、スラブを冷却するために、スラブとロール１に直接冷却水がかけられる。この冷却水が、分割ロール２，３の内側の転がり軸受８，９の内部空間ｃに対して、侵入することを防止するために、下記するような密封手段が用いられている。
【００２１】
この実施形態では、上記密封手段の構成に特徴があるので、以下において説明する。
【００２２】
すなわち、この実施形態での密封手段は、支持台４ａ，５ａの内側部にボルトにより取り付けられる外側環体１５，１６と、これら両外側環体１５，１６の内周部にまたがって嵌合される内側環体２２と、２つの外側環体１５，１６と内側環体２２との各嵌合領域にそれぞれ介装される２つのＯリング２３，２３とを含む構成である。
【００２３】
このように、この実施形態では、従来例の接触タイプシールに比べて軸方向幅の小さいＯリング２３を用いるようにしているから、密封手段全体の軸方向占有幅を可及的に縮小できるようになる。
【００２４】
これにより、内側の転がり軸受８，９について軸方向寸法の大きなものを用いたり、あるいは分割ロール２，３について胴長寸法の大きなものを用いたりすることが可能となる。ちなみに、前者の場合だと、荷重負荷能力を高めることができるから、転がり軸受８，９の寿命向上に貢献できるようになり、一方、後者の場合だと、ロール１において案内対象であるスラブの有効接触幅を拡大させて接触圧力を低減できるようになるから、ロール１の耐荷重性向上に貢献できるようになる。
【００２５】
図４に本発明の他の実施形態を示している。この実施形態では、上記実施形態における密封手段の構成が相違している。
【００２６】
第１に、内側環体２２を排除している。第２に、一方の外側環体１５の内周に拡径円筒部１５ａを設けるとともに、他方の外側環体１６の内側端面に小径円筒部１６ａを設けて、これら両円筒部１５ａ，１６ａを径方向外内に嵌合させるようにしている。第３に、前記両円筒部１５ａ，１６ａの嵌合領域に単一のＯリング２４を介装している。
【００２７】
このような構成の密封手段の場合では、上記実施形態の作用、効果に加えて、密封手段の構成部品点数ならびに組立工数を減らすことができるので、コスト低減を図るうえで有利となる。
【００２８】
【発明の効果】
請求項１および２の発明では、一対の分割ロールの内側の支軸部を支持する転がり軸受に関する密封手段について、従来例の接触タイプシールに比べて軸方向幅の小さいＯリングを使用できるように工夫しているから、密封手段全体の軸方向占有幅を可及的に縮小できるようになる。その結果、前述の転がり軸受について軸方向寸法の大きなものを用いたり、あるいは分割ロールについて胴長寸法の大きなものを用いたりすることが可能となるので、前者の場合だと、転がり軸受の荷重負荷能力を高めることができて寿命向上に貢献できるようになり、また、後者の場合だと、ロールとスラブとの有効接触幅を拡大させて接触圧力を低減できるようになってロールの耐荷重性向上に貢献できるようになる。
【００２９】
請求項２の発明では、上記請求項１の効果に加えて、密封手段の構成部品点数ならびに組立工数を減らすことができるので、コスト低減を図るうえで有利となる。
【図面の簡単な説明】
【図１】本発明の一実施形態にかかる連続鋳造設備用ロール支持装置の全体正面図
【図２】図１での要部を切り欠いて示す正面図
【図３】図２の内側支持部分の拡大図
【図４】本発明の他の実施形態で、図３に対応する図
【図５】従来例の分割ロールの内側支持部分を示す縦断正面図
【符号の説明】
２ 分割ロール
２ａ 分割ロールの内側支軸部
３ 分割ロール
３ａ 分割ロールの内側支軸部
４ａ 支持台
５ａ 支持台
８ 転がり軸受
９ 転がり軸受
１５ 外側環体
１６ 外側環体
２２ 内側環体
２３ Ｏリング[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for supporting a split type roll used for slab guidance in a continuous casting facility.
[0002]
[Prior art]
FIG. 1 shows the overall configuration of a split type roll used in a continuous casting facility. Since FIG. 1 is cited in the description of the embodiment of the present invention, the description here will be minimized.
[0003]
In the figure, 1 is the whole roll, 2 and 3 are split rolls, and 4a, 4b, 5a and 5b are support stands. A slab (not shown) passes over the division rolls 2 and 3.
[0004]
A conventional example of a portion for supporting the inner shaft portions 2a, 3a of both split rolls 2, 3 will be described with reference to FIG.
[0005]
The inner support shaft portions 2a, 3a of the split rolls 2, 3 are rotatably supported on the inner support tables 4a, 5a via rolling bearings 8, 9 such as double row spherical roller bearings. Grease or lubricating oil is supplied to the rolling bearings 8 and 9 via lubricating oil passages 10 and 11 provided in the support bases 4a and 5a.
[0006]
Then, when the slab passes over the roll 1, cooling water is directly applied to the slab and the roll 1 in order to cool the slab. In order to prevent this cooling water from entering the internal space c of the rolling bearings 8, 9 inside the split rolls 2, 3, the following sealing means is used.
[0007]
The above-mentioned sealing means is provided with rings 15 and 16 attached to the inner portions of the support bases 4a and 5a by bolts, and mounted on the inner peripheral portions of the rings 15 and 16 and provided on the outer peripheral surfaces of the shaft portions 2a and 3a. The contact type seals 17 and 18 are in sliding contact with each other.
[0008]
[Problems to be solved by the invention]
In the above-mentioned conventional example, since the contact type seals 17, 18 having a relatively large axial dimension are used as sealing means for sealing the rolling bearings 8, 9, the axial widths of the rings 15, 16 themselves are also reduced. Therefore, the distance between the two rolling bearings 8 and 9 had to be large.
[0009]
Therefore, in order to increase the length of the body of the two split rolls 2 and 3 and reduce the interval T between them, it is necessary to reduce the axial dimension of each of the rolling bearings 8 and 9. 9, the load-carrying capacity is reduced, and the bearing life is shortened. On the other hand, if the axial dimensions of the rolling bearings 8 and 9 are ensured large, it is necessary to reduce the body length of the two split rolls 2 and 3 to increase the facing interval T therebetween. As a result, the contact pressure increases, for example, the effective contact width with the slab decreases, and the load resistance of the roll 1 decreases.
[0010]
In view of such circumstances, an object of the present invention is to minimize the axial occupation width of the sealing means of a rolling bearing in a roll supporting device for a continuous casting facility.
[0011]
[Means for Solving the Problems]
The roll supporting apparatus for a continuous casting facility according to the invention of claim 1 is a continuous casting facility for individually supporting each of the opposed shaft portions of a pair of split rolls coaxially butted against each other on a support base via a rolling bearing. Roll support device, wherein sealing means for sealing the periphery of each spindle from the outside is provided at an opposing portion of each support base, and this sealing means is connected to an opposing inner part of each support base. Two outer rings, an inner ring fitted over the inner peripheral portions of both outer rings, and interposed in respective fitting regions of the two outer rings and the inner ring. And two O-rings.
[0012]
In such a configuration, the sealing means for sealing each rolling bearing from the outside uses an O-ring whose axial dimension is smaller than that of the conventional contact type seal, so the axial occupation width of the entire sealing means is reduced. become able to.
[0013]
The roll support device for a continuous casting facility according to the invention of claim 2 is a device for individually supporting the respective support shaft portions of a pair of split rolls coaxially butted against each other on a support base via a rolling bearing, Sealing means for sealing the periphery of each support shaft portion from the outside is provided at the opposing portion of each of the support bases, and the seal means is connected to the opposing inner portions of the support bases and fits radially in and out of each other. It includes two outer rings each having a mating cylindrical portion, and an O-ring interposed in a fitting region of each cylindrical portion of the both outer rings.
[0014]
In such a configuration, in addition to the operation of the first aspect, the inner ring is not required for the sealing means and the required number of O-rings is reduced as compared with the first aspect. Points and assembly man-hours can be reduced.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, details of the present invention will be described based on embodiments shown in the drawings.
[0016]
1 to 3 show one embodiment of the present invention. 1 is an overall front view of a roll supporting device for a continuous casting facility, FIG. 2 is a front view showing a main part in FIG. 1 cut away, and FIG. 3 is an enlarged view of an inner supporting portion in FIG.
[0017]
The roll 1 in the illustrated example is composed of a pair of split rolls 2 and 3 coaxially butted, and the inner and outer support shaft portions 2a, 2b, 3a and 3b of the split rolls 2 and 3, respectively. Rollers 8, 9, and 19 are individually supported on the support bases 4 a, 4 b, 5 a, and 5 b. A slab (not shown) passes over the division rolls 2 and 3.
[0018]
The rolling bearings 8 and 9 for supporting the inner shaft portions 2a and 3a of the two split rolls 2 and 3 are double-row spherical roller bearings and the like. The rolling bearing 19 supporting the 3b is a single-row roller bearing or the like.
[0019]
Of these, the inner rolling bearings 8 and 9 are supported via lubricating oil passages 10 and 11 provided on the support bases 4a and 5a, and the outer rolling bearings 19 are supported by lubricating oil passages 10 and 11. Grease or lubricating oil is supplied through a lubricating oil passage 20 provided in the tables 4b and 5b.
[0020]
Then, when the slab passes over the roll 1, cooling water is directly applied to the slab and the roll 1 in order to cool the slab. In order to prevent this cooling water from entering the internal space c of the rolling bearings 8, 9 inside the split rolls 2, 3, the following sealing means is used.
[0021]
This embodiment is characterized by the configuration of the sealing means, and will be described below.
[0022]
That is, the sealing means in this embodiment is fitted over the outer rings 15, 16 attached to the inner portions of the support bases 4a, 5a by bolts, and over the inner peripheral portions of both outer rings 15, 16. The inner ring 22 includes two O-rings 23 , 23 interposed in respective fitting regions of the two outer rings 15, 16 and the inner ring 22 .
[0023]
As described above, in this embodiment, the O-ring 23 having a smaller axial width than the conventional contact type seal is used, so that the axial occupation width of the entire sealing means can be reduced as much as possible. become.
[0024]
This makes it possible to use the inner rolling bearings 8 and 9 having a large axial dimension, or to use the split rolls 2 and 3 having a large body length. By the way, in the former case, the load-carrying capacity can be increased, so that the service life of the rolling bearings 8 and 9 can be improved. Since the contact pressure can be reduced by increasing the effective contact width, it is possible to contribute to improving the load resistance of the roll 1.
[0025]
FIG. 4 shows another embodiment of the present invention. In this embodiment, the configuration of the sealing means in the above embodiment is different.
[0026]
First, the inner annulus 22 has been eliminated. Secondly, a large-diameter cylindrical portion 15a is provided on the inner periphery of one outer ring 15 and a small-diameter cylindrical portion 16a is provided on the inner end surface of the other outer ring 16, so that these two cylindrical portions 15a, 16a have a diameter. It fits inside and outside the direction. Third, a single O-ring 24 is interposed in the fitting area between the cylindrical portions 15a and 16a.
[0027]
In the case of the sealing means having such a configuration, the number of components and the number of assembly steps of the sealing means can be reduced in addition to the operations and effects of the above-described embodiment, which is advantageous in reducing costs.
[0028]
【The invention's effect】
According to the first and second aspects of the present invention, the sealing means relating to the rolling bearing for supporting the support shaft inside the pair of split rolls can use an O-ring having a smaller axial width than the conventional contact type seal. Because of the contrivance, the axial occupation width of the entire sealing means can be reduced as much as possible. As a result, it is possible to use the above-mentioned rolling bearings having a large axial dimension, or to use the split rolls having a large body length dimension. In the latter case, the effective contact width between the roll and the slab can be increased and the contact pressure can be reduced. You can contribute to improvement.
[0029]
According to the second aspect of the invention, in addition to the effects of the first aspect, the number of components of the sealing means and the number of assembly steps can be reduced, which is advantageous in reducing costs.
[Brief description of the drawings]
FIG. 1 is an overall front view of a roll supporting device for a continuous casting facility according to an embodiment of the present invention. FIG. 2 is a front view showing a main part in FIG. 1 with a cutaway view. FIG. FIG. 4 is a view corresponding to FIG. 3 in another embodiment of the present invention. FIG. 5 is a vertical sectional front view showing an inner supporting portion of a conventional split roll.
2 Split Roll 2a Split Roll Inner Spindle 3 Split Roll 3a Split Roll Inner Spindle 4a Support 5a Support 8 Rolling Bearing 9 Rolling Bearing 15 Outer Ring 16 Outer Ring 22 Inner Ring 23 O-ring

Claims (2)

同軸状に突き合わせ配置された一対の分割ロールの対向する各支軸部を転がり軸受を介して支持台に個別に支持する連続鋳造設備用ロール支持装置であって、
前記各支持台の対向部分に、各支軸部周辺を外部から密封する密封手段が設けられ、
この密封手段が、前記各支持台の対向する内側部にそれぞれ連結される２つの外側環体と、これら両外側環体の内周部にまたがって嵌合される内側環体と、前記２つの外側環体と内側環体との各嵌合領域にそれぞれ介装される２つのＯリングとを含む、ことを特徴とする連続鋳造設備用ロール支持装置。A continuous casting equipment roll support device for individually supporting each of the opposed shaft portions of a pair of split rolls coaxially butted and arranged on a support base via rolling bearings,
Sealing means for sealing the periphery of each support shaft portion from the outside is provided on the opposing portion of each support base,
The sealing means includes two outer rings connected respectively to opposed inner portions of the support bases, an inner ring fitted over the inner peripheral portions of both outer rings, A roll support device for a continuous casting facility, comprising : two O-rings interposed in respective fitting regions of an outer ring and an inner ring. 同軸状に突き合わせ配置された一対の分割ロールの対向する各支軸部を転がり軸受を介して支持台に個別に支持する連続鋳造設備用ロール支持装置であって、
前記各支持台の対向部分に、各支軸部周辺を外部から密封する密封手段が設けられ、
この密封手段が、前記各支持台の対向する内側部にそれぞれ連結されかつ互いに径方向内外に嵌合する筒部をそれぞれ有する２つの外側環体と、これら両外側環体の各筒部の嵌合領域に介装されるＯリングとを含む、ことを特徴とする連続鋳造設備用ロール支持装置。A continuous casting equipment roll support device for individually supporting each of the opposed shaft portions of a pair of split rolls coaxially butted and arranged on a support base via rolling bearings,
Sealing means for sealing the periphery of each support shaft portion from the outside is provided on the opposing portion of each support base,
This sealing means comprises two outer rings each having a cylindrical portion which is connected to the opposite inner portion of each of the support bases and which fits radially inwardly and outwardly. And an O-ring interposed in the joining region.
JP15961699A 1999-06-07 1999-06-07 Roll support device for continuous casting equipment Expired - Fee Related JP3604590B2 (en)

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JP15961699A JP3604590B2 (en) 1999-06-07 1999-06-07 Roll support device for continuous casting equipment

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Application Number Priority Date Filing Date Title
JP15961699A JP3604590B2 (en) 1999-06-07 1999-06-07 Roll support device for continuous casting equipment

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WO2010005354A1 (en) * 2008-07-08 2010-01-14 Aktiebolaget Skf A roll line in a continuous caster
KR101728444B1 (en) * 2012-03-27 2017-05-02 로뗄렉 Stirring roller for a machine for the continuous casting of metallic products of broad cross section
KR101420635B1 (en) 2012-08-13 2014-07-18 주식회사 멀티스하이드로 Roll Device for Guiding Hot Materials
KR101449251B1 (en) 2013-03-07 2014-10-08 주식회사 포스코 Electro-Magnetic Stirring Roll

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