JP4772448B2 - Plummer block - Google Patents

Plummer block Download PDF

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Publication number
JP4772448B2
JP4772448B2 JP2005292598A JP2005292598A JP4772448B2 JP 4772448 B2 JP4772448 B2 JP 4772448B2 JP 2005292598 A JP2005292598 A JP 2005292598A JP 2005292598 A JP2005292598 A JP 2005292598A JP 4772448 B2 JP4772448 B2 JP 4772448B2
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Japan
Prior art keywords
inner ring
roll neck
ring
plummer block
fitted
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Expired - Fee Related
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JP2005292598A
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JP2007100867A (en
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裕 浜▲崎▼
由孝 信田
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NTN Corp
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NTN Corp
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Description

本発明は、プランマブロックに関し、特に、連続焼鈍炉のハースロールのロールネック部を自由側で支持するのに好適なプランマブロックに関する。   The present invention relates to a plummer block, and more particularly to a plummer block suitable for supporting a roll neck portion of a hearth roll of a continuous annealing furnace on a free side.

連続焼鈍炉のハースロール等のロールネック部を、軸方向移動を許容する自由側で支持するプランマブロックには、図2に示すように、インナ側に壁面等への取付けフランジ1aを有する軸受箱1内に転がり軸受2を配設し、その内輪3をアダプタスリーブ7を介して、インナ側から挿入されるロールネック部12aに嵌着し、内輪3のインナ側を軸受箱1の外側まで延長して、この延長部3aをロールネック部12aの基端側に嵌着された基端スリーブ8の先端側に当接させるようにしたものがある。   In the plummer block that supports the roll neck portion of the continuous annealing furnace, such as the hearth roll, on the free side that allows axial movement, a bearing box having a flange 1a on the wall surface on the inner side as shown in FIG. A rolling bearing 2 is disposed in 1, and the inner ring 3 is fitted to a roll neck portion 12 a inserted from the inner side via an adapter sleeve 7, and the inner side of the inner ring 3 is extended to the outside of the bearing box 1. Then, there is one in which the extension portion 3a is brought into contact with the distal end side of the proximal end sleeve 8 fitted to the proximal end side of the roll neck portion 12a.

このようなロールネック部を自由側で支持するプランマブロックの転がり軸受2には、円筒ころ軸受や調心輪付きの円筒ころ軸受が多く用いられ、軸受部に充填されるグリースが炉内等へ漏出しないように、転がり軸受2のインナ側で内輪3の延長部3aの外径側にオイルシール9が装着されるとともに、基端スリーブ8のロールネック部12aへの嵌着部にOリング10aが装着される。   As the rolling bearing 2 of the plummer block that supports the roll neck portion on the free side, a cylindrical roller bearing or a cylindrical roller bearing with a centering ring is often used, and the grease filled in the bearing portion enters the furnace or the like. In order to prevent leakage, an oil seal 9 is mounted on the outer diameter side of the extension 3a of the inner ring 3 on the inner side of the rolling bearing 2, and an O-ring 10a is fitted on the fitting portion of the proximal sleeve 8 to the roll neck 12a. Is installed.

なお、ハースロール等のロールネック部を、軸方向移動を固定する固定側で支持するプランマブロックには、転がり軸受として自動調心ころ軸受が多く用いられ、その内輪はインナ側へ延長されずに、基端スリーブの外径側にオイルシールが装着されるとともに、基端スリーブのロールネック部への嵌着部にOリングが装着される。   Spherical roller bearings are often used as rolling bearings for plummer blocks that support a roll neck such as a hearth roll on the fixed side that fixes axial movement, and the inner ring does not extend to the inner side. An oil seal is attached to the outer diameter side of the proximal end sleeve, and an O-ring is attached to a fitting portion of the proximal end sleeve to the roll neck portion.

鋼帯等を連続焼鈍する連続焼鈍炉では、グリースがわずかでも炉内に漏出すると、その油分が鋼帯等の表面に付着して表面汚れが発生する。上述した転がり軸受の内輪を延長せずに、基端スリーブの外径側にオイルシールを装着し、そのロールネック部への嵌着部にOリングを装着したロールネック部を固定側で支持するプランマブロックは、軸受部に充填されるグリースがインナ側から炉内へ漏出する恐れはない。   In a continuous annealing furnace that continuously anneals steel strips or the like, even if a small amount of grease leaks into the furnace, the oil component adheres to the surface of the steel strip or the like and surface contamination occurs. Without extending the inner ring of the rolling bearing described above, an oil seal is attached to the outer diameter side of the base sleeve, and the roll neck portion with an O-ring attached to the roll neck portion is supported on the fixed side. In the plummer block, there is no possibility that grease filled in the bearing portion leaks from the inner side into the furnace.

しかしながら、転がり軸受の内輪を軸受箱の外側までインナ側へ延長し、この延長部を基端スリーブの先端側に押し当てるようにしたロールネック部を自由側で支持するプランマブロックは、内輪の延長部の外径側にオイルシールを装着し、基端スリーブのロールネック部への嵌着部にOリングを装着しても、内輪の延長部と基端スリーブとの間からわずかのグリースが炉内へ漏出し、連続焼鈍される鋼帯等に表面汚れが発生する恐れがある。   However, the plummer block that extends the inner ring of the rolling bearing toward the inner side to the outside of the bearing housing and supports the roll neck that presses the extended part against the distal end of the proximal sleeve is the extension of the inner ring. Even if an oil seal is attached to the outer diameter side of the part and an O-ring is attached to the roll neck part of the base sleeve, a small amount of grease will remain in the furnace between the inner ring extension and the base sleeve. There is a risk of surface contamination on steel strips that leak into the steel and are continuously annealed.

そこで、本発明の課題は、転がり軸受の内輪がインナ側で軸受箱の外側まで延長されたプランマブロックで、内輪のインナ側の延長部と基端スリーブとの間からのグリースの漏出を防止することである。   Accordingly, an object of the present invention is a plummer block in which the inner ring of the rolling bearing is extended to the outside of the bearing housing on the inner side, and prevents leakage of grease from the extension portion on the inner side of the inner ring and the proximal sleeve. That is.

上記の課題を解決するために、本発明は、インナ側に取付けフランジを有する軸受箱内に配設した転がり軸受で、インナ側から挿入されるロールネック部を支持し、前記転がり軸受の内輪がアダプタスリーブを介して前記ロールネック部に嵌着され、この内輪のインナ側が前記軸受箱の外側まで延長されて、この内輪の延長部が前記ロールネック部の基端側に嵌着された基端スリーブの先端側に押し当てられるプランマブロックにおいて、前記基端スリーブの先端側に小径段差部を設け、この小径段差部を前記内輪の延長部の内径面に嵌合して、この嵌合部にOリングを装着した構成を採用した。   In order to solve the above problems, the present invention provides a rolling bearing disposed in a bearing box having a mounting flange on the inner side, supporting a roll neck inserted from the inner side, and an inner ring of the rolling bearing is A base end that is fitted to the roll neck portion through an adapter sleeve, an inner side of the inner ring is extended to the outside of the bearing housing, and an extension portion of the inner ring is fitted to a base end side of the roll neck portion. In the plummer block pressed against the distal end side of the sleeve, a small-diameter step portion is provided on the distal end side of the proximal sleeve, and this small-diameter step portion is fitted to the inner diameter surface of the extension portion of the inner ring. A configuration equipped with an O-ring was adopted.

すなわち、基端スリーブの先端側に小径段差部を設け、この小径段差部を内輪の延長部の内径面に嵌合して、この嵌合部にOリングを装着することにより、内輪のインナ側の延長部と基端スリーブとの間からのグリースの漏出を防止できるようにした。   That is, by providing a small-diameter step portion on the distal end side of the proximal end sleeve, fitting the small-diameter step portion to the inner diameter surface of the extension portion of the inner ring, and attaching an O-ring to this fitting portion, the inner side of the inner ring Leakage of grease from between the extension portion and the proximal sleeve can be prevented.

前記プランマブロックを、連続焼鈍炉のハースロールのロールネック部を、軸方向移動を許容する自由側で支持するものとすることにより、炉内へのグリースの漏出を防止して、連続焼鈍される鋼帯等に表面汚れが発生するのを防止することができる。   The plummer block is supported on the roll neck of the hearth roll of the continuous annealing furnace on the free side that allows axial movement, thereby preventing grease from leaking into the furnace and continuously annealing. It is possible to prevent surface contamination from occurring on a steel strip or the like.

本発明のプランマブロックは、基端スリーブの先端側に小径段差部を設け、この小径段差部をインナ側で軸受箱の外側まで延長された内輪の延長部の内径面に嵌合して、この嵌合部にOリングを装着したので、内輪のインナ側の延長部と基端スリーブとの間からのグリースの漏出を防止することができる。   The plummer block of the present invention is provided with a small-diameter step portion on the distal end side of the proximal sleeve, and this small-diameter step portion is fitted to the inner diameter surface of the extension portion of the inner ring extended to the outside of the bearing housing on the inner side. Since the O-ring is attached to the fitting portion, leakage of grease from between the inner-side inner extension portion of the inner ring and the proximal end sleeve can be prevented.

前記プランマブロックを、連続焼鈍炉のハースロールのロールネック部を、軸方向移動を許容する自由側で支持するものとすることにより、炉内へのグリースの漏出を防止して、連続焼鈍される鋼帯等に表面汚れが発生するのを防止することができる。   The plummer block is supported on the roll neck of the hearth roll of the continuous annealing furnace on the free side that allows axial movement, thereby preventing grease from leaking into the furnace and continuously annealing. It is possible to prevent surface contamination from occurring on a steel strip or the like.

以下、図面に基づき、本発明の実施形態を説明する。このプランマブロックは、図1に示すように、鋼帯の連続焼鈍炉11のハースロール12のロールネック部12aを、軸方向移動を許容する自由側で支持するものであり、インナ側に連続焼鈍炉11の壁面11aへの取付けフランジ1aを有する軸受箱1内に転がり軸受2が配設されて、その内輪3がアダプタスリーブ7を介して、インナ側から挿入されるロールネック部12aに嵌着され、内輪3のインナ側が軸受箱1の外側まで延長されて、この延長部3aがロールネック部12aの基端側に嵌着された基端スリーブ8の先端側に当接されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, this plummer block supports the roll neck portion 12a of the hearth roll 12 of the continuous annealing furnace 11 of the steel strip on the free side allowing axial movement, and is continuously annealed on the inner side. A rolling bearing 2 is disposed in a bearing box 1 having a mounting flange 1a to the wall surface 11a of the furnace 11, and the inner ring 3 is fitted to a roll neck portion 12a inserted from the inner side via an adapter sleeve 7. The inner side of the inner ring 3 is extended to the outside of the bearing housing 1, and the extended portion 3a is in contact with the distal end side of the proximal end sleeve 8 fitted to the proximal end side of the roll neck portion 12a.

前記転がり軸受2は、外輪4と円筒ころ5の間に調心輪6を介在させた調心輪付き円筒ころ軸受とされ、内輪3の延長部3aの外径側にオイルシール9が装着されている。また、基端スリーブ8の先端側には小径段差部8aが設けられ、この段差部8aが内輪3の延長部3aの内径面に嵌合されており、基端スリーブ8のロールネック部12aへの嵌着部にOリング10aが装着されるとともに、段差部8aの内輪3の延長部3aへの嵌合部にもOリング10bが装着されている。したがって、内輪3の延長部3aと基端スリーブ8との間からのわずかなグリースの漏出が防止され、連続焼鈍される鋼帯における表面汚れの発生を防止することができる。   The rolling bearing 2 is a cylindrical roller bearing with an aligning ring in which an aligning ring 6 is interposed between an outer ring 4 and a cylindrical roller 5, and an oil seal 9 is mounted on the outer diameter side of the extension 3 a of the inner ring 3. ing. Further, a small-diameter stepped portion 8 a is provided on the distal end side of the proximal end sleeve 8, and this stepped portion 8 a is fitted to the inner diameter surface of the extension portion 3 a of the inner ring 3, and to the roll neck portion 12 a of the proximal end sleeve 8. The O-ring 10a is attached to the fitting portion of the inner ring 3, and the O-ring 10b is also attached to the fitting portion of the step portion 8a to the extension portion 3a of the inner ring 3. Therefore, slight leakage of grease from between the extended portion 3a of the inner ring 3 and the proximal end sleeve 8 is prevented, and the occurrence of surface contamination in the continuously annealed steel strip can be prevented.

上述した実施形態では、軸受箱に配設される転がり軸受を調心輪付き円筒ころ軸受とし、連続焼鈍炉のハースロールの自由側を支持するものとしたが、本発明に係るプランマブロックは、他のロールを支持するものにも適用でき、転がり軸受も調心輪付き円筒ころ軸受に限定されることはない。   In the embodiment described above, the rolling bearing disposed in the bearing box is a cylindrical roller bearing with a centering ring, and the free side of the hearth roll of the continuous annealing furnace is supported, but the plummer block according to the present invention is The present invention can also be applied to those supporting other rolls, and the rolling bearing is not limited to the cylindrical roller bearing with the aligning ring.

プランマブロックの実施形態を示す縦断面図Vertical section showing an embodiment of plummer block 従来のプランマブロックを示す縦断面図A longitudinal sectional view showing a conventional plummer block

符号の説明Explanation of symbols

1 軸受箱
1a フランジ
3 内輪
3a 延長部
4 外輪
5 ころ
6 調心輪
7 アダプタスリーブ
8 基端スリーブ
8a 段差部
9 オイルシール
10a、10b Oリング
11 連続焼鈍炉
11a 壁面
12 ハースロール
12a ロールネック部
DESCRIPTION OF SYMBOLS 1 Bearing housing 1a Flange 3 Inner ring 3a Extension part 4 Outer ring 5 Roller 6 Centering ring 7 Adapter sleeve 8 Base end sleeve 8a Step part 9 Oil seal 10a, 10b O-ring 11 Continuous annealing furnace 11a Wall surface 12 Hearth roll 12a Roll neck part

Claims (2)

インナ側に取付けフランジ(1a)を有する軸受箱(1)内に配設した転がり軸受(2)で、インナ側から挿入されるロールネック部(12a)その軸方向移動を許容する自由側で支持し、前記転がり軸受(2)の内輪(3)がアダプタスリーブ(7)を介して前記ロールネック部(12a)に嵌着され、この内輪(3)のインナ側が前記軸受箱(1)との間にオイルシール(9)を介在して前記軸受箱(1)の外側まで延長されて、この内輪(3)の延長部(3a)が前記ロールネック部(12a)の基端側に嵌着された基端スリーブ(8)の先端側に当接されるプランマブロックにおいて、前記基端スリーブ(8)の先端側に小径段差部(8a)を設け、この小径段差部(8a)を前記内輪(3)の延長部(3a)の内径面に嵌合して、前記小径段差部(8a)と前記延長部(3a)との嵌合部にOリング(10b)を装着したことを特徴とするプランマブロック。 A rolling bearing (2) disposed in a bearing box (1) having a mounting flange (1a) on the inner side, and the roll neck portion (12a) inserted from the inner side on the free side that allows axial movement thereof. The inner ring (3 ) of the rolling bearing (2) is fitted to the roll neck (12a) via the adapter sleeve (7), and the inner side of the inner ring (3) is connected to the bearing box (1). Is extended to the outside of the bearing housing (1) with an oil seal (9) interposed therebetween, and the extended portion (3a) of the inner ring (3) is fitted to the proximal end side of the roll neck portion (12a). in the above Plummer block that contacts the distal end side of the wearing radicals sleeves (8), the small-diameter stepped portion (8a) provided on a front end side of the proximal sleeve (8), the small-diameter stepped portion (8a) fitted into the inner diameter surface of the extension portion of the inner ring (3) (3a) Plummer blocks, characterized in that the O-ring (10b) mounted on the fitting portion between the small-diameter step portion (8a) and said extension portion (3a). 前記プランマブロックが、連続焼鈍炉のハースロール(12)前記ロールネック部(12a)を、前記軸方向移動を許容する自由側で支持するものである請求項1に記載のプランマブロック。 Wherein Plummer block, the roll neck portions of (12a), plummer block of claim 1 is for supporting the free end to allow the axial movement of the hearth rolls of the continuous annealing furnace (12).
JP2005292598A 2005-10-05 2005-10-05 Plummer block Expired - Fee Related JP4772448B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005292598A JP4772448B2 (en) 2005-10-05 2005-10-05 Plummer block

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Application Number Priority Date Filing Date Title
JP2005292598A JP4772448B2 (en) 2005-10-05 2005-10-05 Plummer block

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JP2007100867A JP2007100867A (en) 2007-04-19
JP4772448B2 true JP4772448B2 (en) 2011-09-14

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0464559A (en) * 1990-07-02 1992-02-28 Dainippon Printing Co Ltd Automatic small winder
US5492419A (en) * 1994-07-19 1996-02-20 Ntn Corporation Cartridge axle pinion bearing assembly
JP3905577B2 (en) * 1996-06-12 2007-04-18 Ntn株式会社 Spherical roller bearing

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