JP2007024115A - Self-aligning roller bearing - Google Patents

Self-aligning roller bearing Download PDF

Info

Publication number
JP2007024115A
JP2007024115A JP2005204628A JP2005204628A JP2007024115A JP 2007024115 A JP2007024115 A JP 2007024115A JP 2005204628 A JP2005204628 A JP 2005204628A JP 2005204628 A JP2005204628 A JP 2005204628A JP 2007024115 A JP2007024115 A JP 2007024115A
Authority
JP
Japan
Prior art keywords
spherical
self
roller
ring
roller bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005204628A
Other languages
Japanese (ja)
Inventor
Takeshi Maeda
剛 前田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2005204628A priority Critical patent/JP2007024115A/en
Publication of JP2007024115A publication Critical patent/JP2007024115A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • 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
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • F16C33/485—Cages for rollers or needles for multiple rows of rollers or needles with two or more juxtaposed cages joined together or interacting with each other

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-aligning roller bearing having a retainer capable of storing many rollers. <P>SOLUTION: This self-aligning roller bearing 31 comprises an inner ring 32, an outer ring 33, a plurality of barrel-shaped rollers 34 disposed between the inner ring 32 and the outer ring 33 in double rows, and the retainer 35 holding intervals between the barrel-shaped rollers 34 adjacent to each other. The retainer 35 comprises a pair of ring parts, a column part positioned between the pair of ring parts, and a locking part for the barrel-shaped rollers 34 in the end part area of the column part, and is manufactured of a resin by injection molding. The locking part is positioned on the upper side of the pitch circle of the barrel-shaped rollers 34 to restrict the movement of the barrel-shaped rollers 34 in the outer diameter direction of the longitudinal end part thereof. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、自動調心ころ軸受に関し、特に高荷重、低速回転下で使用される自動調心ころ軸受に関するものである。   The present invention relates to a self-aligning roller bearing, and more particularly to a self-aligning roller bearing used under high load and low-speed rotation.

従来の風力発電機用の増速機として、例えば、遊星歯車機構や平行軸歯車機構を備える増速機が用いられている。これらの増速機は、入力軸の回転を歯車によって増速して出力軸に伝達するので、回転軸は歯車の噛み合いによって撓みを生じる。   As a conventional speed increaser for a wind power generator, for example, a speed increaser including a planetary gear mechanism or a parallel shaft gear mechanism is used. In these speed increasers, the rotation of the input shaft is accelerated by the gear and transmitted to the output shaft, so that the rotation shaft is bent by the meshing of the gear.

そこで、風力発電機用増速機に用いる回転軸を支持する軸受には、例えば、特開２００２−２１１９５号公報（特許文献１）に記載されているような自動調心ころ軸受が使用されることがある。同公報に記載されている自動調心ころ軸受２１は、図５に示すように、内輪２２と、外輪２３と、内輪２２および外輪２３の間に複列に配置された複数の球面ころ２４と、複数の球面ころ２４の間隔を保持する保持器２５とを備える。   Therefore, for example, a self-aligning roller bearing described in Japanese Patent Application Laid-Open No. 2002-21195 (Patent Document 1) is used as a bearing that supports a rotating shaft used in a speed increaser for a wind power generator. Sometimes. As shown in FIG. 5, the self-aligning roller bearing 21 described in the publication includes an inner ring 22, an outer ring 23, and a plurality of spherical rollers 24 arranged in a double row between the inner ring 22 and the outer ring 23. And a cage 25 that holds the spacing between the plurality of spherical rollers 24.

保持器２５は、図６に示すように、リング部とリング部の端面から突出する柱部２５ｂとを有し、隣接する柱部２５ｂの間に球面ころ２４を収容するポケット２５ｃを有する。柱部２５ｂは、球面ころ２４のピッチ円上に位置し、球面ころ２４の抜け止めおよび隣接する球面ころ２４の間隔を一定に保つ機能を有する。   As shown in FIG. 6, the retainer 25 includes a ring portion and a column portion 25 b protruding from the end surface of the ring portion, and includes a pocket 25 c that accommodates the spherical roller 24 between the adjacent column portions 25 b. The column part 25b is located on the pitch circle of the spherical roller 24, and has a function of keeping the spherical roller 24 from coming off and keeping the interval between the adjacent spherical rollers 24 constant.

また、球面ころ２４の脱落を防止する他の方法として、図７に示すように、球面ころ２４の端面にぬすみ部２４ａと、保持器２５のリング部２５ａにぬすみ部２４ａと係合する係合爪２５ｄとを設けることによって、球面ころ２４の径方向への移動を規制した自動調心ころ軸受２１が特開平１１−１６６５４５号公報（特許文献２）に記載されている。   Further, as another method for preventing the spherical roller 24 from falling off, as shown in FIG. 7, the engaging portion 24 a engages the thin portion 24 a on the end surface of the spherical roller 24 and the thin portion 24 a on the ring portion 25 a of the retainer 25. Japanese Patent Laid-Open No. 11-166545 (Patent Document 2) describes a self-aligning roller bearing 21 in which movement of the spherical roller 24 in the radial direction is restricted by providing the claw 25d.

上記構成の自動調心ころ軸受２１は、他の軸受と比較して定格荷重が高く、また、歯車の噛み合いによって生じる回転軸の撓みに対して調心性を有しているので、このような場所に使用する軸受として好適である。
特開２００２−２１１９５号公報 特開平１１−１６６５４５号公報 Since the self-aligning roller bearing 21 having the above-described configuration has a higher rated load than other bearings and has alignment with respect to the bending of the rotating shaft caused by the meshing of the gears, It is suitable as a bearing used for
JP 2002-21195 A JP 11-166545 A

近年、ブレードの大型化や風力発電機をより風速の強い場所へ設置する等、発電効率の向上のための取り組みがなされている。これに伴い、回転軸を支持する軸受に負荷される荷重も増大する。また、風力発電機用増速機は高所に設置されるため、さらなる信頼性の向上およびメンテナンス周期の延伸が望まれる。   In recent years, efforts have been made to improve power generation efficiency, such as increasing the size of blades and installing wind power generators in places with higher wind speeds. As a result, the load applied to the bearing that supports the rotating shaft also increases. In addition, since the speed increaser for wind power generators is installed at a high place, further improvement in reliability and extension of the maintenance cycle are desired.

そこで、図５に示したような自動調心ころ軸受２１の軸受サイズを維持したまま、定格荷重を向上させることが望まれる。自動調心ころ軸受２１の定格荷重を向上させる方法としては、内輪２２および外輪２３の間に配置する球面ころ２４の本数を増加させるか、ころ径を大きくすることが考えられる。   Therefore, it is desired to improve the rated load while maintaining the bearing size of the self-aligning roller bearing 21 as shown in FIG. As a method for improving the rated load of the self-aligning roller bearing 21, it is conceivable to increase the number of spherical rollers 24 arranged between the inner ring 22 and the outer ring 23 or to increase the roller diameter.

しかし、例えば、ころ本数を増加させる場合、自動調心ころ軸受２１の球面ころ２４の左右には保持器２５の柱部２５ｂが配置されており、柱部２５ｂの強度確保の観点から柱部２５ｂの太さを一定値以上にする必要がある。その結果、隣接する球面ころ２４の間隔を小さくして収容可能な球面ころ２４の本数を増やすことは困難であった。   However, for example, when increasing the number of rollers, the column portions 25b of the cage 25 are disposed on the left and right of the spherical roller 24 of the self-aligning roller bearing 21, and the column portion 25b is used from the viewpoint of securing the strength of the column portion 25b. The thickness of must be a certain value or more. As a result, it is difficult to increase the number of spherical rollers 24 that can be accommodated by reducing the interval between adjacent spherical rollers 24.

そこで、この発明の目的は、より多くのころを収容可能な保持器を備えた自動調心ころ軸受を提供することである。   SUMMARY OF THE INVENTION An object of the present invention is to provide a self-aligning roller bearing provided with a cage that can accommodate more rollers.

また、図７に示したような球面ころ２４の抜け止め構造は、球面ころ２４にぬすみ部を形成する工程が必要となり、製造工程の増大に伴う製品コスト増が懸念される。そこで、ぬすみ加工を施す必要の無い抜け止め構造を採用した自動調心ころ軸受を提供することを目的とする。   Further, the retaining structure for the spherical roller 24 as shown in FIG. 7 requires a step of forming a thinned portion on the spherical roller 24, and there is a concern about an increase in product cost due to an increase in manufacturing steps. Then, it aims at providing the self-aligning roller bearing which employ | adopted the retaining structure which does not need to give a thinning process.

この発明に係る自動調心ころ軸受は、内輪と、外輪と、内輪および外輪の間に配置された複数の球面ころと、一対のリング部、一対のリング部の間に位置する柱部、および球面ころの脱落を防止する抜け止め部を有する樹脂製保持器とを備える。そして、球面ころの長さ方向中央部に対面する柱部の中央領域は、球面ころのピッチ円の下側に位置し、抜け止め部は、球面ころのピッチ円の上側に位置し、球面ころの転動面に当接してこの球面ころの径方向への移動を規制する。   A self-aligning roller bearing according to the present invention includes an inner ring, an outer ring, a plurality of spherical rollers disposed between the inner ring and the outer ring, a pair of ring portions, a column portion positioned between the pair of ring portions, and And a resin cage having a retaining portion for preventing the spherical roller from falling off. The central region of the column portion that faces the central portion in the length direction of the spherical roller is located below the pitch circle of the spherical roller, and the retaining portion is located above the pitch circle of the spherical roller. The spherical roller is brought into contact with the rolling surface to restrict the radial movement of the spherical roller.

隣接する球面ころの間隔はピッチ円上で最小となるので、ころ径が最大となる長さ方向中央部で柱部をピッチ円から外れた領域に配置することにより、隣接する球面ころの間隔を小さくすることができる。その結果、より多くの球面ころを収容することが可能となるので、軸受サイズを維持したまま定格荷重の向上した自動調心ころ軸受を得ることができる。   Since the spacing between adjacent spherical rollers is the smallest on the pitch circle, the spacing between adjacent spherical rollers can be reduced by placing the column portion in a region outside the pitch circle at the central portion in the length direction where the roller diameter is maximum. Can be small. As a result, a larger number of spherical rollers can be accommodated, so that a self-aligning roller bearing having an improved rated load can be obtained while maintaining the bearing size.

好ましくは、抜け止め部は、球面ころの長さ方向端部に対面する柱部の端部領域に設けられている。上記構成の抜け止め部は、球面ころの転動面端部を覆う形状となるので、端面にぬすみを設ける等の球面ころへの加工の必要がない。これにより、製造工程を削減することができるので、コストを抑えた自動調心ころ軸受を得ることができる。   Preferably, the retaining portion is provided in an end region of the column portion facing the longitudinal end portion of the spherical roller. Since the retaining portion having the above-described configuration has a shape that covers the end of the rolling surface of the spherical roller, there is no need to process the spherical roller, such as providing a dullness on the end surface. Thereby, since a manufacturing process can be reduced, the self-aligning roller bearing which suppressed cost can be obtained.

好ましくは、一対のリング部のうちの少なくとも一方は、その外径面が複数の球面ころのころ中心より外側に位置する。軸受組立て時の球面ころの傾きを有効に抑制できるので、軸受の取扱いが容易となる。   Preferably, at least one of the pair of ring portions has an outer diameter surface located outside the roller center of the plurality of spherical rollers. Since the inclination of the spherical roller at the time of assembling the bearing can be effectively suppressed, the handling of the bearing becomes easy.

この発明は、収容可能な球面ころの本数を増加させることにより、軸受サイズを維持したまま定格荷重の向上した自動調心ころ軸受を得ることができる。また、球面ころの加工を必要としないころの抜け止め構造を採用することにより、製造コストを抑えた自動調心ころ軸受を得ることができる。   According to the present invention, by increasing the number of spherical rollers that can be accommodated, it is possible to obtain a self-aligning roller bearing having an improved rated load while maintaining the bearing size. Further, by employing a roller retaining structure that does not require the processing of spherical rollers, a self-aligning roller bearing with reduced manufacturing costs can be obtained.

図１〜図４を参照して、この発明の一実施形態に係る自動調心ころ軸受３１を説明する。   With reference to FIGS. 1-4, the self-aligning roller bearing 31 which concerns on one Embodiment of this invention is demonstrated.

自動調心ころ軸受３１は、図１に示すように、内輪３２と、外輪３３と、内輪３２および外輪３３の間に複列に配置された複数の球面ころ３４と、隣接する球面ころ３４の間隔を保持する保持器３５とを備える。   As shown in FIG. 1, the self-aligning roller bearing 31 includes an inner ring 32, an outer ring 33, a plurality of spherical rollers 34 arranged in a double row between the inner ring 32 and the outer ring 33, and adjacent spherical rollers 34. And a cage 35 that holds the interval.

保持器３５は、図２に示すように、一対のリング部３５ａおよび３５ｂと、一対のリング部３５ａ，３５ｂの間に位置する柱部３５ｃと、柱部３５ｃの端部領域に球面ころ３４の抜け止め部３５ｄとを有し、射出成型によって製造される樹脂製保持器である。   As shown in FIG. 2, the cage 35 includes a pair of ring portions 35a and 35b, a column portion 35c positioned between the pair of ring portions 35a and 35b, and spherical rollers 34 in the end region of the column portion 35c. This is a resin cage that has a retaining portion 35d and is manufactured by injection molding.

そして、抜け止め部３５ｄは、球面ころ３４のピッチ円の上側に位置して、球面ころ３４の長さ方向端部の外径方向への移動を規制する。この実施形態における抜け止め部３５ｄは、図３（ａ）に示すように、隣接する柱部３５ｃで形成されたポケットのリング部３５ａ近傍の壁面から突出する凸部であって、抜け止め部３５ｄの位置する部分でのポケットの開口幅ｗ１は、球面ころ３４のころ径ｗ２より小さく設定されている。 The retaining portion 35d is located above the pitch circle of the spherical roller 34 and restricts the movement of the end portion in the length direction of the spherical roller 34 in the outer diameter direction. As shown in FIG. 3A, the retaining portion 35d in this embodiment is a convex portion protruding from the wall surface near the ring portion 35a of the pocket formed by the adjacent column portion 35c, and the retaining portion 35d. The opening width w 1 of the pocket in the portion where is located is set smaller than the roller diameter w 2 of the spherical roller 34.

また、図３（ｂ）に示すように、柱部３５ｃは、球面ころ３４のピッチ円の下側に位置し、ポケット内部に突出した凸部（図２の斜線部）によって、ポケットの開口幅ｗ３を球面ころ３４のころ径ｗ２より小さく設定することにより、球面ころ３４の内径方向への移動を規制する。 Further, as shown in FIG. 3B, the column portion 35c is positioned below the pitch circle of the spherical roller 34, and the opening width of the pocket is formed by a convex portion (shaded portion in FIG. 2) protruding into the pocket. by setting the w 3 smaller than the roller diameter w 2 of spherical rollers 34, to restrict the movement of the inner diameter direction of the spherical roller 34.

自動調心ころ軸受３１において、隣接する球面ころ３４の間隔はピッチ円上で最小となる。そこで、柱部３５ｃをピッチ円から外れた領域に配置することにより、隣接する球面ころ３４の間隔を小さくすることができる。その結果、より多くの球面ころ３４を収容することが可能となるので、軸受サイズを維持したまま定格荷重の向上した自動調心ころ軸受３１を得ることができる。   In the self-aligning roller bearing 31, the interval between the adjacent spherical rollers 34 is minimized on the pitch circle. Therefore, the interval between the adjacent spherical rollers 34 can be reduced by disposing the column portion 35c in a region outside the pitch circle. As a result, a larger number of spherical rollers 34 can be accommodated, so that the self-aligning roller bearing 31 having an improved rated load can be obtained while maintaining the bearing size.

また、抜け止め部３５ｄは、球面ころ３４の転動面端部を覆う形状となっているので、端面にぬすみを設ける等の球面ころ３４への加工の必要がない。これにより、製造工程を削減することができるので、コストを抑えた自動調心ころ軸受３１を得ることができる。   Further, since the retaining portion 35d has a shape that covers the end of the rolling surface of the spherical roller 34, there is no need to process the spherical roller 34, such as providing a dullness on the end surface. Thereby, since a manufacturing process can be reduced, the self-aligning roller bearing 31 which suppressed cost can be obtained.

さらに、図４に示すように、リング部３５ａの外径面は、球面ころ３４のころ中心よりも外側に位置している。上記構成の保持器３５は、リング部３５ｂの側に球面ころ３４の径方向への移動を規制する手段を有していないので、軸受組立て時に球面ころ３４とリング部３５ａの外径面との当接部分を基点として球面ころ３４が傾く可能性がある。   Furthermore, as shown in FIG. 4, the outer diameter surface of the ring portion 35 a is located outside the roller center of the spherical roller 34. The cage 35 having the above configuration does not have means for restricting the radial movement of the spherical roller 34 on the ring portion 35b side, so that the spherical roller 34 and the outer diameter surface of the ring portion 35a are not assembled when the bearing is assembled. There is a possibility that the spherical roller 34 tilts with the contact portion as a base point.

そこで、リング部３５ｂの外径面を球面ころ３４のころ中心より外側に配置することにより、軸受組立て時の球面ころの傾きを有効に抑制できるので、軸受の組立てが容易となる。   Therefore, by disposing the outer diameter surface of the ring portion 35b outside the roller center of the spherical roller 34, the inclination of the spherical roller during the assembly of the bearing can be effectively suppressed, so that the assembly of the bearing is facilitated.

上記の実施形態においては、柱部３５ｃは、その全域で球面ころ３４のピッチ円の下側に位置する例を示したが、これに限ることなく、球面ころ３４のころ径が最大となる長さ方向中央部に対面する柱部３５ｃの中央領域でピッチ円の下側に位置すればよい。   In the above-described embodiment, the column portion 35c has been shown to be located below the pitch circle of the spherical roller 34 in the entire region. However, the present invention is not limited to this, and the length of the roller diameter of the spherical roller 34 is maximum. What is necessary is just to be located in the lower side of a pitch circle in the center area | region of the pillar part 35c which faces a center part in the vertical direction.

上記の実施形態においては、リング部３５ａの側にのみ抜け止め部３５ｄを設けた例を示したが、これに限ることなく、リング部３５ｂの側にも抜け止め部を設けてもよい。   In the above embodiment, the example in which the retaining portion 35d is provided only on the ring portion 35a side is shown, but the present invention is not limited to this, and the retaining portion may also be provided on the ring portion 35b side.

また、抜け止め部３５ｄは柱部３５ｃの一部とした例を示したが、これに限ることなく、柱部から離れた位置、例えば、球面ころ３４の端面に対面するリング部３５ａ，３５ｂの壁面から突出する凸部であって、球面ころ３４の転動面に当接して球面ころ３４の径方向の移動を規制するものであってもよい。   In addition, although the example in which the retaining portion 35d is a part of the column portion 35c has been shown, the present invention is not limited to this, and the positions of the ring portions 35a and 35b facing the end surface of the spherical roller 34 are not limited to this. It may be a convex portion protruding from the wall surface and abutting against the rolling surface of the spherical roller 34 to restrict the radial movement of the spherical roller 34.

上記の実施形態に示した自動調心ころ軸受３１は、風力発電機の増速機に用いる回転軸を支持する軸受として使用する他、圧延機用ローラ等、高荷重、かつ、低速で回転する軸を支持する軸受として利用することが可能である。   The self-aligning roller bearing 31 shown in the above embodiment is used as a bearing for supporting a rotating shaft used in a speed increaser of a wind power generator, and rotates at a high load and a low speed such as a roller for a rolling mill. It can be used as a bearing that supports the shaft.

以上、図面を参照してこの発明の実施形態を説明したが、この発明は、図示した実施形態のものに限定されない。図示した実施形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

この発明は、高い信頼性やメンテナンス周期の延伸が要求される環境で使用される自動調心ころ軸受に有利に利用される。   The present invention is advantageously used for a self-aligning roller bearing used in an environment where high reliability and maintenance cycle extension are required.

この発明の一実施形態に係る自動調心ころ軸受を示す断面図である。It is sectional drawing which shows the self-aligning roller bearing which concerns on one Embodiment of this invention. この発明の一実施形態に係る保持器の部分平面図である。It is a fragmentary top view of the holder | retainer which concerns on one Embodiment of this invention. 図２に示す保持器であって、（ａ）はＡ部分の断面、（ｂ）は、Ｂ部分の断面を示す図である。2A and 2B, FIG. 2A is a cross-sectional view of a portion A, and FIG. 3B is a cross-sectional view of a portion B. FIG. この発明の一実施形態に係る自動調心ころ軸受に使用される保持器の一例であって、リング部の外径面と球面ころの端面との関係を示す図である。It is an example of the retainer used for the self-aligning roller bearing which concerns on one Embodiment of this invention, Comprising: It is a figure which shows the relationship between the outer diameter surface of a ring part, and the end surface of a spherical roller. 従来の自動調心ころ軸受を示す断面図である。It is sectional drawing which shows the conventional self-aligning roller bearing. 従来の自動調心ころ軸受の部分拡大断面図である。It is a partial expanded sectional view of the conventional self-aligning roller bearing. 従来の球面ころの抜け止め構造を示す図である。It is a figure which shows the conventional retaining structure of a spherical roller.

符号の説明Explanation of symbols

２１，３１ 自動調心ころ軸受、２２，３２ 内輪、２３，３３ 外輪、２４，３４ 球面ころ、２４ａ ぬすみ、２５，３５ 保持器、２５ａ，３５ａ，３５ｂ リング部、２５ｂ，３５ｃ 柱部、２５ｃ ポケット、２５ｄ 係合爪、３５ｄ 抜け止め部。   21, 31 Spherical roller bearings, 22, 32 Inner ring, 23, 33 Outer ring, 24, 34 Spherical roller, 24a Brazing, 25, 35 Cage, 25a, 35a, 35b Ring part, 25b, 35c Pillar part, 25c Pocket , 25d engagement claw, 35d retaining part.

Claims (3)

内輪と、
外輪と、
前記内輪および前記外輪の間に配置された複数の球面ころと、
一対のリング部、前記一対のリング部の間に位置する柱部、および前記球面ころの脱落を防止する抜け止め部を有する樹脂製保持器とを備え、
前記球面ころの長さ方向中央部に対面する前記柱部の中央領域は、前記球面ころのピッチ円の下側に位置し、
前記抜け止め部は、前記球面ころのピッチ円の上側に位置し、前記球面ころの転動面に当接してこの球面ころの径方向への移動を規制する、自動調心ころ軸受。 Inner ring,
Outer ring,
A plurality of spherical rollers disposed between the inner ring and the outer ring;
A pair of ring portions, a column portion located between the pair of ring portions, and a resin cage having a retaining portion for preventing the spherical roller from falling off,
The central region of the column portion facing the central portion in the length direction of the spherical roller is located below the pitch circle of the spherical roller,
The self-aligning roller bearing is located on the upper side of the pitch circle of the spherical roller, and is in contact with the rolling surface of the spherical roller to restrict radial movement of the spherical roller. 前記抜け止め部は、前記球面ころの長さ方向端部に対面する前記柱部の端部領域に設けられている、請求項１に記載の自動調心ころ軸受。   The self-aligning roller bearing according to claim 1, wherein the retaining portion is provided in an end region of the column portion facing an end portion in the length direction of the spherical roller. 前記一対のリング部のうちの少なくとも一方は、その外径面が前記複数の球面ころのころ中心より外側に位置する、請求項１または２に記載の自動調心ころ軸受。   The self-aligning roller bearing according to claim 1 or 2, wherein at least one of the pair of ring portions has an outer diameter surface located outside a roller center of the plurality of spherical rollers.
JP2005204628A 2005-07-13 2005-07-13 Self-aligning roller bearing Pending JP2007024115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005204628A JP2007024115A (en) 2005-07-13 2005-07-13 Self-aligning roller bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005204628A JP2007024115A (en) 2005-07-13 2005-07-13 Self-aligning roller bearing

Publications (1)

Publication Number Publication Date
JP2007024115A true JP2007024115A (en) 2007-02-01

Family

ID=37785152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005204628A Pending JP2007024115A (en) 2005-07-13 2005-07-13 Self-aligning roller bearing

Country Status (1)

Country Link
JP (1) JP2007024115A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124353U (en) * 1976-03-19 1977-09-21
JPS56147923A (en) * 1980-04-15 1981-11-17 Nippon Seiko Kk Roller bearing with retainer
JPH11201171A (en) * 1998-01-12 1999-07-27 Nippon Seiko Kk Self aligning roller bearing
JP2001099162A (en) * 1999-09-28 2001-04-10 Nsk Ltd Holder for roller bearing
JP2004100866A (en) * 2002-09-11 2004-04-02 Ntn Corp Retainer for self-aligning roller bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124353U (en) * 1976-03-19 1977-09-21
JPS56147923A (en) * 1980-04-15 1981-11-17 Nippon Seiko Kk Roller bearing with retainer
JPH11201171A (en) * 1998-01-12 1999-07-27 Nippon Seiko Kk Self aligning roller bearing
JP2001099162A (en) * 1999-09-28 2001-04-10 Nsk Ltd Holder for roller bearing
JP2004100866A (en) * 2002-09-11 2004-04-02 Ntn Corp Retainer for self-aligning roller bearing

Similar Documents

Publication Publication Date Title
JP5161958B2 (en) Speed increaser for wind power generator and wind power generator
KR101507374B1 (en) Radial foil bearing
KR101362708B1 (en) Wave generator of wave gear device
JP5466100B2 (en) Tapered roller bearing
US20140066245A1 (en) Planetary Transmission of a Wind Turbine
JPWO2019150881A1 (en) Cam device
JP4699827B2 (en) Main shaft support structure for tapered roller bearing and wind power generator
JP4248557B2 (en) Roller bearing, cage segment, and main shaft support structure for wind power generator
JP2008298274A (en) Roller bearing, retainer segment for roller bearing, and spindle supporting structure of wind-power plant
JP2007024115A (en) Self-aligning roller bearing
JP2013061023A (en) Thrust rolling bearing
JP2006349032A (en) Double-row tapered roller bearing and spindle supporting structure of aerogenerator
JP2007024112A (en) Self-aligning roller bearing and planetary gear support structure
JP2008064151A (en) Radial roller bearing
JP2016142370A (en) Flexible engaging type gear device
JP2005106211A (en) Roller with retainer
JP2006177447A (en) Double-row rolling bearing
JP2006322548A (en) Jig for incorporating bearing and method for incorporating tapered roller bearing
US6981325B2 (en) Double row ball bearing
JP2007056890A (en) Self-aligning roller bearing
JP2009138854A (en) Planetary gear mechanism
JP2006307886A (en) Roller bearing
JP2007024113A (en) Self-aligning roller bearing
JP2010190292A (en) Rolling bearing device and method for manufacturing the same
JP2008101646A (en) Bearing with retaining ring

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080605

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091013

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091020

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20100302