JP2006162011A - Rolling bearing with pre-load mechanism - Google Patents

Rolling bearing with pre-load mechanism Download PDF

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JP2006162011A
JP2006162011A JP2004357417A JP2004357417A JP2006162011A JP 2006162011 A JP2006162011 A JP 2006162011A JP 2004357417 A JP2004357417 A JP 2004357417A JP 2004357417 A JP2004357417 A JP 2004357417A JP 2006162011 A JP2006162011 A JP 2006162011A
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Prior art keywords
ring
hole
piston
preload
bottomed hole
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Japanese (ja)
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Takeshi Osumi
毅 大隅
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NSK Ltd
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NSK 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • 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
    • F16C19/385—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 two rows, i.e. double-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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings

Abstract

<P>PROBLEM TO BE SOLVED: To improve handling performance and maintenance performance of a pre-load mechanism by making a coil spring generating pre-load and a ring-shaped member non-separatable. <P>SOLUTION: The ring-shaped member 4 has a bottomed hole 6, a through hole 7 is formed on a bottom portion of the bottomed hole 6, and a threaded hole 8 is formed on an inlet of the bottomed hole 6. A locking screw 9 is engaged with the threaded hole 8. A shaft member 10 is inserted into the bottomed hole 6. The shaft member 10 comprises a piston 11 of large diameter, a pressing portion 12 projecting from the through hole 7 and pressing a side end face of an outer ring 2, and a shaft portion 13. The coil spring 14 is mounted between the piston 11 and the locking screw 9. The piston 11 is pressed by energizing force of the coil spring 14, and the pressing portion 12 presses the side end face of the outer ring 2 to apply pre-load. The bottom portion of the bottomed hole 6 acts as a stopper of the piston 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えば、鉄鋼設備や圧延機等に使用されるロールネック軸受としての予圧機構付き転がり軸受に関する。   The present invention relates to a rolling bearing with a preload mechanism as a roll neck bearing used in, for example, steel facilities and rolling mills.

また、例えば、熱間圧延機や冷間圧延機に於いて、ＢＵロール（稀にワークロールや中間ロール）の主にスラスト荷重受けに使用される軸受で、主に複列円錐ころ軸受が挙げられる。   Also, for example, in hot rolling mills and cold rolling mills, it is a bearing mainly used for thrust load reception of BU rolls (rarely work rolls and intermediate rolls), mainly double row tapered roller bearings. It is done.

上述した複列円錐ころ軸受として、特許文献１の従来例に開示してあると共に、図７に示すように、外輪に予圧を与える予圧機構付き複列円錐ころ軸受がある。   As the double-row tapered roller bearing described above, there is a double-row tapered roller bearing with a preload mechanism that preloads the outer ring as shown in FIG.

図７は、従来例に係る予圧機構付き複列円錐ころ軸受の断面図である。内輪１と、複列の外輪２，２との間に、円錐ころ３，３が転動自在に介装してある。この外輪２，２の両側端面には、リング状部材４，４が対向して設けてあり、このリング状部材４，４の径方向内方側に、シール部材５，５が設けてある。   FIG. 7 is a cross-sectional view of a double row tapered roller bearing with a preload mechanism according to a conventional example. Tapered rollers 3 and 3 are interposed between the inner ring 1 and the double rows of outer rings 2 and 2 so as to roll freely. Ring-shaped members 4, 4 are provided to face both end faces of the outer rings 2, 2, and seal members 5, 5 are provided on the radially inner side of the ring-shaped members 4, 4.

リング状部材４，４には、外輪２，２の側端面に予圧を付与して、外輪２，２の連れ回りを防止する予圧機構Ｐ，Ｐが設けてある。   The ring-shaped members 4, 4 are provided with preload mechanisms P, P that apply preload to the side end surfaces of the outer rings 2, 2 to prevent the outer rings 2, 2 from being accompanied.

従来例では、予圧機構Ｐ，Ｐは、リング状部材４，４に形成した有底孔２１，２１と、この有底孔２１，２１に介装したコイルスプリング２２，２２と、からなる。このコイルスプリング２２，２２の付勢力により、外輪２，２に、所定の予圧を与えるようになっている。   In the conventional example, the preload mechanisms P, P are composed of bottomed holes 21, 21 formed in the ring-shaped members 4, 4, and coil springs 22, 22 interposed in the bottomed holes 21, 21. A predetermined preload is applied to the outer rings 2 and 2 by the urging force of the coil springs 22 and 22.

なお、有底孔２１とコイルスプリング２２の数は、必要な予圧荷重により異なるので任意である。
実開平５−８９９４８号公報 The number of the bottomed holes 21 and the coil springs 22 is arbitrary because it varies depending on the required preload.
Japanese Utility Model Publication No. 5-89948

しかしながら、特許文献１の従来例に開示してあると共に図７に示す予圧付与機構Ｐでは、予圧を発生させる為のコイルスプリング２２は、リング状部材４に穿設した有底孔２１に固定されず、押し込められているだけなので、以下のような不具合を発生させる。   However, in the preload applying mechanism P disclosed in the conventional example of Patent Document 1 and shown in FIG. 7, the coil spring 22 for generating preload is fixed to the bottomed hole 21 formed in the ring-shaped member 4. However, since it is only pushed in, the following problems occur.

例えば、組込み、取りはずしの作業中に、コイルスプリング２２が脱落する。また、コイルスプリング２２が有底孔２１の中で軸方向に対して傾く場合があり、適正な予圧量が不足する。さらに、リング状部材４に穿設した有底孔２１に、スラッジ等の異物が浸入し、コイルスプリング２２の間に挟まれ、適正な予圧量が発生しない。さらに、有底孔２１に水が浸入し、錆が発生し、適正な予圧量が確保されない。   For example, the coil spring 22 falls off during the work of assembling and removing. Further, the coil spring 22 may be inclined with respect to the axial direction in the bottomed hole 21, and an appropriate preload amount is insufficient. Furthermore, foreign matter such as sludge enters the bottomed hole 21 formed in the ring-shaped member 4 and is sandwiched between the coil springs 22 so that an appropriate amount of preload is not generated. Furthermore, water permeates into the bottomed hole 21, rust is generated, and an appropriate preload amount is not ensured.

本発明は、上述したような事情に鑑みてなされたものであって、予圧を発生するコイルスプリングとリング状部材とを不分離として、予圧機構の取扱い性やメンテナンス性を向上することができる、予圧機構付き転がり軸受を提供することを目的とする。   The present invention has been made in view of the circumstances as described above, and can improve the handleability and maintainability of the preload mechanism by making the coil spring and the ring-shaped member that generate the preload non-separable. An object of the present invention is to provide a rolling bearing with a preload mechanism.

上記の目的を達成するため、本発明の請求項１に係る予圧機構付き転がり軸受は、内輪と、外輪との間に、転動体が転動自在に介装してあり、
外輪の側端面に、リング状部材が対向して設けてあり、
リング状部材に、外輪の側端面に予圧を付与する予圧機構が設けてある予圧機構付き転がり軸受に於いて、
リング状部材に形成した有底孔に、ピストンを付勢部材により付勢するように挿入して、螺合部材により装着してあり、
有底孔に形成した貫通孔から、外輪の側端面に向けて、ピストンの押圧部が突出してあることを特徴とする。 In order to achieve the above object, a rolling bearing with a preload mechanism according to claim 1 of the present invention has a rolling element interposed between an inner ring and an outer ring so as to freely roll,
A ring-shaped member is provided opposite to the side end surface of the outer ring,
In a rolling bearing with a preload mechanism in which a preload mechanism for applying a preload to the side end surface of the outer ring is provided on the ring-shaped member,
The piston is inserted into the bottomed hole formed in the ring-shaped member so as to be urged by the urging member, and is attached by the screwing member,
The pressing portion of the piston protrudes from the through hole formed in the bottomed hole toward the side end surface of the outer ring.

本発明の請求項２に係る予圧機構付き転がり軸受は、ピストンと有底孔の間、又は、押圧部と貫通孔の間に、シール部材が設けてあることを特徴とする。   The rolling bearing with a preload mechanism according to claim 2 of the present invention is characterized in that a seal member is provided between the piston and the bottomed hole or between the pressing portion and the through hole.

本発明によれば、リング状部材に形成した有底孔に、ピストンを付勢部材により付勢するように挿入して、螺合部材により装着してあり、有底孔に形成した貫通孔から、外輪の側端面に向けて、ピストンの押圧部が突出してあることから、ピストンの押圧部は、付勢部材の付勢力により、外輪の側端面に予圧を付与して、外輪の連れ回りを防止することができる。また、リング状部材の側部外方から、ピストンや付勢部材を装着して、螺合部材により固定する簡易な構造であることから、予圧機構の取扱い性やメンテナンス性を向上することができる。   According to the present invention, the piston is inserted into the bottomed hole formed in the ring-shaped member so as to be urged by the urging member, and is attached by the screwing member, from the through hole formed in the bottomed hole. Since the pressing portion of the piston protrudes toward the side end surface of the outer ring, the pressing portion of the piston applies preload to the side end surface of the outer ring by the urging force of the urging member and rotates the outer ring. Can be prevented. In addition, since the piston and the biasing member are attached from the outside of the side of the ring-shaped member and fixed by the screwing member, the handling and maintenance performance of the preload mechanism can be improved. .

また、本発明によれば、ピストンと有底孔の間、又は、押圧部と貫通孔の間に、シール部材が設けてあることから、リング状部材の有底孔の中に、異物や水等が浸入することを防止して、適切な予圧量を確保することができる。   Further, according to the present invention, since the seal member is provided between the piston and the bottomed hole or between the pressing portion and the through hole, foreign matter and water are present in the bottomed hole of the ring-shaped member. And the like can be prevented from entering, and an appropriate amount of preload can be secured.

以下、本発明の実施の形態に係る予圧機構付き転がり軸受を図面を参照しつつ説明する。   Hereinafter, a rolling bearing with a preload mechanism according to an embodiment of the present invention will be described with reference to the drawings.

（第１実施の形態）
図１は、本発明の第１実施の形態に係る予圧機構付き複列円錐ころ軸受の断面図である。 (First embodiment)
FIG. 1 is a cross-sectional view of a double row tapered roller bearing with a preload mechanism according to a first embodiment of the present invention.

図２は、図１に示した予圧機構の拡大断面図である。   FIG. 2 is an enlarged cross-sectional view of the preload mechanism shown in FIG.

図１に示すように、内輪１と、複列の外輪２，２との間に、円錐ころ３，３が転動自在に介装してある。この外輪２，２の両側端面には、リング状部材４，４が対向して設けてあり、このリング状部材４，４の径方向内方側に、シール部材５，５が設けてある。   As shown in FIG. 1, tapered rollers 3 and 3 are interposed between an inner ring 1 and double rows of outer rings 2 and 2 so as to roll freely. Ring-shaped members 4, 4 are provided to face both end faces of the outer rings 2, 2, and seal members 5, 5 are provided on the radially inner side of the ring-shaped members 4, 4.

リング状部材４，４には、外輪２，２の側端面に予圧を付与して、外輪２，２の連れ回りを防止する予圧機構Ｐ，Ｐが設けてある。   The ring-shaped members 4, 4 are provided with preload mechanisms P, P that apply preload to the side end surfaces of the outer rings 2, 2 to prevent the outer rings 2, 2 from being accompanied.

図２に示すように、リング状部材４には、有底孔６が形成してあり、この有底孔６の底部には、貫通孔７が形成してあり、有底孔６の入口部には、ネジ孔８が形成してある。このネジ孔８には、止めネジ９が螺合するようになっている。   As shown in FIG. 2, a bottomed hole 6 is formed in the ring-shaped member 4, and a through hole 7 is formed at the bottom of the bottomed hole 6. Are formed with screw holes 8. A set screw 9 is screwed into the screw hole 8.

なお、止めネジ９は、平行ネジ、テーパーネジのいずれでも良い。このネジ止め９には、緩み止め、接着材が施されていても良く、また、ダブルナットであってもよい。   The set screw 9 may be a parallel screw or a taper screw. The screwing 9 may be provided with a loosening prevention or an adhesive, or may be a double nut.

この有底孔６には、軸部材１０が挿入してある。この軸部材１０は、大径のピストン１１と、貫通孔７から突出して外輪２の側端面を押圧する押圧部１２と、軸部１３とを具備している。   A shaft member 10 is inserted into the bottomed hole 6. The shaft member 10 includes a large-diameter piston 11, a pressing portion 12 that protrudes from the through hole 7 and presses the side end surface of the outer ring 2, and a shaft portion 13.

ピストン１１と、止めネジ９との間には、コイルスプリング１４が介装してある。このコイルスプリング１４の付勢力により、ピストン１１を押圧して、その押圧部１２が外輪２の側端面を押圧して、予圧を付与するようになっている。   A coil spring 14 is interposed between the piston 11 and the set screw 9. The urging force of the coil spring 14 presses the piston 11, and the pressing portion 12 presses the side end surface of the outer ring 2 to apply preload.

また、貫通孔７の径は、Ａであり、有底孔６の径は、Ｂである。ピストン１１の外径寸法は、貫通孔７の径よりも大きいので、ピストン１１は、貫通孔７から抜け出ない。即ち、有底孔６の底部は、ピストン１１のストッパーの役割を果たしている。   The diameter of the through hole 7 is A, and the diameter of the bottomed hole 6 is B. Since the outer diameter of the piston 11 is larger than the diameter of the through hole 7, the piston 11 does not come out of the through hole 7. That is, the bottom of the bottomed hole 6 serves as a stopper for the piston 11.

さらに、コイルスプリング１４は、有底孔６と軸部１３とによって支えられているので、軸方向の倒れは発生しない。   Furthermore, since the coil spring 14 is supported by the bottomed hole 6 and the shaft portion 13, no axial collapse occurs.

本実施の形態では、以上のように構成してあることから、ピストン１１の押圧部１２は、コイルスプリング１４の付勢力により、外輪２の側端面に予圧を付与して、外輪２の連れ回りを防止することができる。   In the present embodiment, since it is configured as described above, the pressing portion 12 of the piston 11 applies a preload to the side end surface of the outer ring 2 by the urging force of the coil spring 14 to rotate the outer ring 2 together. Can be prevented.

また、リング状部材４の側部外方から、軸部材１１やコイルスプリング１４を装着して、止めネジ９により固定する簡易な構造であることから、予圧機構Ｐの取扱い性やメンテナンス性を向上することができる。   Further, since the shaft member 11 and the coil spring 14 are attached from the outside of the side of the ring-shaped member 4 and are fixed by the set screw 9, the handling and maintenance of the preload mechanism P are improved. can do.

なお、本実施の形態では、有底孔６とコイルスプリング１４の数は、必要な予圧荷重により異なるので任意である。   In the present embodiment, the number of the bottomed holes 6 and the coil springs 14 is arbitrary because it varies depending on the necessary preload.

（第２実施の形態）
図３は、本発明の第２実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。 (Second Embodiment)
FIG. 3 is an enlarged cross-sectional view of a preload mechanism provided in a double row tapered roller bearing with a preload mechanism according to the second embodiment of the present invention.

本実施の形態は、図面から明らかなように、その基本的構造は、上述した第１実施の形態と同様であり、相違する点について説明する。   As is clear from the drawings, the basic structure of this embodiment is the same as that of the first embodiment described above, and differences will be described.

本実施の形態では、ネジ孔８と止めネジ９とは、テーパーネジにより構成してある。   In the present embodiment, the screw hole 8 and the set screw 9 are configured by taper screws.

その他の構成、作用、及び効果は、上述した第１実施の形態と同様である。   Other configurations, operations, and effects are the same as those in the first embodiment described above.

（第３実施の形態）
図４は、本発明の第３実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。 (Third embodiment)
FIG. 4 is an enlarged cross-sectional view of a preload mechanism provided in a double row tapered roller bearing with a preload mechanism according to a third embodiment of the present invention.

本実施の形態は、図面から明らかなように、その基本的構造は、上述した第１実施の形態と同様であり、相違する点について説明する。   As is clear from the drawings, the basic structure of this embodiment is the same as that of the first embodiment described above, and differences will be described.

本実施の形態では、有底孔６の径に対して、ネジ孔８の径は、大径に形成してある。これにより、止めネジ９のねじ込み過ぎを避けることができる。   In the present embodiment, the diameter of the screw hole 8 is larger than the diameter of the bottomed hole 6. Thereby, excessive screwing of the set screw 9 can be avoided.

その他の構成、作用、及び効果は、上述した第１実施の形態と同様である。   Other configurations, operations, and effects are the same as those in the first embodiment described above.

（第４実施の形態）
図５は、本発明の第４実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。 (Fourth embodiment)
FIG. 5 is an enlarged cross-sectional view of a preload mechanism provided in a double row tapered roller bearing with a preload mechanism according to a fourth embodiment of the present invention.

本実施の形態は、図面から明らかなように、その基本的構造は、上述した第１実施の形態と同様であり、相違する点について説明する。   As is clear from the drawings, the basic structure of this embodiment is the same as that of the first embodiment described above, and differences will be described.

本実施の形態では、貫通孔７に、周方向溝１６が形成してあり、この周方向溝１６には、シール部材１５（Ｏリング等）が装着してあり、これにより、押圧部１２と、貫通孔７との間をシールしている。異物が貫通孔７に浸入することを防止することができる。   In the present embodiment, a circumferential groove 16 is formed in the through-hole 7, and a seal member 15 (O-ring or the like) is attached to the circumferential groove 16. The space between the through hole 7 is sealed. Foreign matter can be prevented from entering the through-hole 7.

その他の構成、作用、及び効果は、上述した第１実施の形態と同様である。   Other configurations, operations, and effects are the same as those in the first embodiment described above.

（第５実施の形態）
図６は、本発明の第５実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。 (Fifth embodiment)
FIG. 6 is an enlarged cross-sectional view of a preload mechanism provided in a double-row tapered roller bearing with a preload mechanism according to the fifth embodiment of the present invention.

本実施の形態は、図面から明らかなように、その基本的構造は、上述した第１実施の形態と同様であり、相違する点について説明する。   As is clear from the drawings, the basic structure of this embodiment is the same as that of the first embodiment described above, and differences will be described.

本実施の形態では、ピストン１１に、周方向溝１８が形成してあり、この周方向溝１８には、シール部材１７（Ｏリング等）が装着してあり、これにより、ピストン１１と、有底孔６との間をシールしている。異物が有底孔６に浸入することを防止することができる。   In the present embodiment, a circumferential groove 18 is formed in the piston 11, and a seal member 17 (O-ring or the like) is attached to the circumferential groove 18. The space between the bottom hole 6 is sealed. Foreign matter can be prevented from entering the bottomed hole 6.

その他の構成、作用、及び効果は、上述した第１実施の形態と同様である。   Other configurations, operations, and effects are the same as those in the first embodiment described above.

なお、本発明は、上述した実施の形態に限定されず、種々変形可能である。   In addition, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible.

本発明の第１実施の形態に係る予圧機構付き複列円錐ころ軸受の断面図である。It is sectional drawing of the double row tapered roller bearing with a preload mechanism which concerns on 1st Embodiment of this invention. 図１に示した予圧機構の拡大断面図である。It is an expanded sectional view of the preload mechanism shown in FIG. 本発明の第２実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。It is an expanded sectional view of the preload mechanism provided in the double row tapered roller bearing with a preload mechanism concerning a 2nd embodiment of the present invention. 本発明の第３実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。It is an expanded sectional view of the preload mechanism provided in the double row tapered roller bearing with a preload mechanism concerning a 3rd embodiment of the present invention. 本発明の第４実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。It is an expanded sectional view of the preload mechanism provided in the double row tapered roller bearing with a preload mechanism concerning a 4th embodiment of the present invention. 本発明の第５実施の形態に係る予圧機構付き複列円錐ころ軸受に設けた予圧機構の拡大断面図である。It is an expanded sectional view of the preload mechanism provided in the double row tapered roller bearing with a preload mechanism concerning a 5th embodiment of the present invention. 従来例に係る予圧機構付き複列円錐ころ軸受の断面図である。It is sectional drawing of the double row tapered roller bearing with a preload mechanism which concerns on a prior art example.

符号の説明Explanation of symbols

１ 内輪
２ 外輪
３ 円錐ころ
４ リング状部材
５ シール部材
６ 有底孔
７ 貫通孔
８ ネジ孔（螺合部材）
９ 止めネジ（螺合部材）
１０ 軸部材
１１ ピストン
１２ 押圧部
１３ 軸部
１４ コイルスプリング（付勢部材）
１５ シール部材（Ｏリング）
１６ 周方向溝
１７ シール部材（Ｏリング）
１８ 周方向溝
２１ 有底孔
２２ コイルスプリング
Ｐ 予圧機構 DESCRIPTION OF SYMBOLS 1 Inner ring 2 Outer ring 3 Tapered roller 4 Ring-shaped member 5 Seal member 6 Bottomed hole 7 Through-hole 8 Screw hole (screwing member)
9 Set screw (screwing member)
DESCRIPTION OF SYMBOLS 10 Shaft member 11 Piston 12 Press part 13 Shaft part 14 Coil spring (biasing member)
15 Seal member (O-ring)
16 Circumferential groove 17 Seal member (O-ring)
18 Circumferential groove 21 Bottomed hole 22 Coil spring P Preload mechanism

Claims (2)

内輪と、外輪との間に、転動体が転動自在に介装してあり、
外輪の側端面に、リング状部材が対向して設けてあり、
リング状部材に、外輪の側端面に予圧を付与する予圧機構が設けてある予圧機構付き転がり軸受に於いて、
リング状部材に形成した有底孔に、ピストンを付勢部材により付勢するように挿入して、螺合部材により装着してあり、
有底孔に形成した貫通孔から、外輪の側端面に向けて、ピストンの押圧部が突出してあることを特徴とする予圧機構付き転がり軸受。 A rolling element is interposed between the inner ring and the outer ring so as to freely roll.
A ring-shaped member is provided opposite to the side end surface of the outer ring,
In a rolling bearing with a preload mechanism in which a preload mechanism for applying a preload to the side end surface of the outer ring is provided on the ring-shaped member,
The piston is inserted into the bottomed hole formed in the ring-shaped member so as to be urged by the urging member, and is attached by the screwing member,
A rolling bearing with a preload mechanism, wherein a pressing portion of a piston protrudes from a through hole formed in a bottomed hole toward a side end surface of an outer ring. ピストンと有底孔の間、又は、押圧部と貫通孔の間に、シール部材が設けてあることを特徴とする請求項１に記載の予圧機構付き転がり軸受。   2. The rolling bearing with a preload mechanism according to claim 1, wherein a seal member is provided between the piston and the bottomed hole or between the pressing portion and the through hole.
JP2004357417A 2004-12-09 2004-12-09 Rolling bearing with pre-load mechanism Withdrawn JP2006162011A (en)

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JP2008151176A (en) * 2006-12-14 2008-07-03 Honda Motor Co Ltd Support structure for crankshaft
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JP2012508853A (en) * 2008-11-13 2012-04-12 シェフラー テクノロジーズ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト Bearing units specifically for supporting rotors, spindles or other mechanical devices
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008151176A (en) * 2006-12-14 2008-07-03 Honda Motor Co Ltd Support structure for crankshaft
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US7997804B2 (en) 2007-02-06 2011-08-16 Jtekt Corporation Rolling bearing apparatus
JP2012508853A (en) * 2008-11-13 2012-04-12 シェフラー テクノロジーズ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト Bearing units specifically for supporting rotors, spindles or other mechanical devices
KR20130136737A (en) * 2012-06-05 2013-12-13 현대자동차주식회사 Driven motor for electric vehicle
KR101865948B1 (en) * 2012-06-05 2018-06-11 현대자동차주식회사 Driven Motor for Electric Vehicle
CN102808857A (en) * 2012-08-14 2012-12-05 广东明阳风电产业集团有限公司 Bearing assembly on transmission shaft of wind driven generator
CN105723106A (en) * 2013-11-13 2016-06-29 Ntn株式会社 Bearing preloading device
WO2015072352A1 (en) * 2013-11-13 2015-05-21 Ntn株式会社 Bearing preloading device
EP3070351A4 (en) * 2013-11-13 2016-11-30 Ntn Toyo Bearing Co Ltd Bearing preloading device
US9863469B2 (en) 2013-11-13 2018-01-09 Ntn Corporation Bearing preloading device
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CN105723106B (en) * 2013-11-13 2021-06-11 Ntn株式会社 Bearing pre-pressing device
JP2016130532A (en) * 2015-01-13 2016-07-21 Ntn株式会社 Bearing preload mechanism and shaft support device
WO2016114195A1 (en) * 2015-01-13 2016-07-21 Ntn株式会社 Bearing preload mechanism and shaft support device
DE102021131574A1 (en) 2021-12-01 2023-06-01 Krones Aktiengesellschaft Storage arrangement for storing a container treatment carousel against a base frame of a container treatment device in a beverage bottling plant
CN114857168A (en) * 2022-05-11 2022-08-05 中铁工程装备集团有限公司 Main bearing of heading machine
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