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JP4829699B2 - Railway vehicle bearing device - Google Patents
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JP4829699B2 - Railway vehicle bearing device - Google Patents

Railway vehicle bearing device Download PDF

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JP4829699B2
JP4829699B2 JP2006180071A JP2006180071A JP4829699B2 JP 4829699 B2 JP4829699 B2 JP 4829699B2 JP 2006180071 A JP2006180071 A JP 2006180071A JP 2006180071 A JP2006180071 A JP 2006180071A JP 4829699 B2 JP4829699 B2 JP 4829699B2
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Prior art keywords
axle
end surface
inner ring
ring
fitted
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JP2008008424A (en
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田中　　誠
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NTN Corp
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NTN Corp
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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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for 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
    • 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
    • F16C19/386—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 in O-arrangement
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/10—Railway vehicles
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Description

本発明は、鉄道車両の車軸を支持する鉄道車両用軸受装置に関する。   The present invention relates to a railway vehicle bearing device that supports an axle of a railway vehicle.

鉄道車両の車軸を支持する鉄道車両用軸受装置には、図３に示すように、車軸１を支持する転がり軸受２の内輪３の後面側に、車軸１の拡径部１ａに嵌合固定される後蓋６を設け、車軸１に圧入される内輪３の軸方向位置を位置決めするようにしたものがある。内輪３の前面側には、転がり軸受２を抜け止めする前蓋７が設けられる。この例では、外輪４の両端部に装着されたシール部材８を後蓋６と前蓋７の外周面に摺接させて、軸受内部を密封するようにしている。 As shown in FIG. 3 , the bearing device for a railway vehicle that supports the axle of the railway vehicle is fitted and fixed to the enlarged diameter portion 1 a of the axle 1 on the rear surface side of the inner ring 3 of the rolling bearing 2 that supports the axle 1. In some cases, a rear lid 6 is provided to position the axial position of the inner ring 3 that is press-fitted into the axle 1. A front lid 7 that prevents the rolling bearing 2 from coming off is provided on the front side of the inner ring 3. In this example, the seal members 8 mounted on both ends of the outer ring 4 are brought into sliding contact with the outer peripheral surfaces of the rear lid 6 and the front lid 7 to seal the bearing interior.

上述した鉄道車両用軸受装置では、鉄道車両に特有の過大なラジアル荷重によって車軸１に大きな曲げモーメントが負荷されると、互いに当接する内輪３の後端面と後蓋６の前端面との間に繰り返し応力が発生し、これらの端面にフレッティング摩耗が生じる。このようなフレッティング摩耗が生じると、転がり軸受２の軸方向精度が低下するとともに、フレッティング摩耗で発生した摩耗粉が軸受内部に侵入して、軸受寿命が短くなる問題がある。   In the above-described bearing device for a railway vehicle, when a large bending moment is applied to the axle 1 due to an excessive radial load unique to the railway vehicle, the rear end surface of the inner ring 3 and the front end surface of the rear lid 6 that are in contact with each other are placed. Stress is repeatedly generated, and fretting wear occurs on these end faces. When such fretting wear occurs, there is a problem that the axial accuracy of the rolling bearing 2 is lowered, and wear powder generated by fretting wear enters the inside of the bearing, thereby shortening the bearing life.

このような問題に対して、前記転がり軸受の内輪の後端面と後蓋の前端面との間に、これらの両端面に当接させて環状スペーサを介在させ、この環状スペーサの外周側端部に、内輪の後端面と後蓋の前端面との間をシールする環状弾性シール部材を固着することにより、両端面でのフレッティング摩耗を抑制するとともに、発生した摩耗粉の軸受内部への侵入を防止することが提案されている（例えば、特許文献１参照）。   For such a problem, between the rear end surface of the inner ring of the rolling bearing and the front end surface of the rear lid, an annular spacer is interposed between the two end surfaces, and the outer peripheral end of the annular spacer. In addition, by fixing an annular elastic sealing member that seals between the rear end surface of the inner ring and the front end surface of the rear lid, the fretting wear on both end surfaces is suppressed and the generated wear powder enters the bearing. Has been proposed (see, for example, Patent Document 1).

特開２００５−３３７３０２号公報JP 2005-337302 A

特許文献１に記載された鉄道車両用軸受装置は、内輪の後端面と後蓋の前端面との間でのフレッティング摩耗を抑制できるとともに、摩耗粉の軸受内部への侵入を防止できるが、軸受装置を車軸に組み込むときに、圧入される内輪と車軸の間にスティックスリップが生じると、内輪の後端面に環状スペーサを介して当接された後蓋は、その後端部の内径面が車軸の拡径部に嵌合されるまでは、ルーズに車軸に外嵌されているので、スティックスリップによる内輪の間歇的な急前進によって叩かれ、内輪の後端側から大きく離脱することがある。このため、内輪の後端面と後蓋の前端面との間に介在する環状スペーサが倒れ込んで、軸受装置の組み込み作業に支障を来たす問題がある。また、外輪の後端部に装着されたシール部材が後蓋の外周面から外れ、軸受内部に異物が侵入する恐れもある。   The railway vehicle bearing device described in Patent Document 1 can suppress fretting wear between the rear end surface of the inner ring and the front end surface of the rear lid, and can prevent wear powder from entering the bearing. When stick slip occurs between the inner ring to be press-fitted and the axle when the bearing device is incorporated in the axle, the rear lid that is in contact with the rear end surface of the inner ring via an annular spacer has the inner diameter surface at the rear end portion of the axle. Until it is fitted to the enlarged diameter part of the inner ring, it is loosely fitted on the axle, so that it may be hit by intermittent sudden advance of the inner ring by stick slip, and may be largely separated from the rear end side of the inner ring. For this reason, there is a problem that the annular spacer interposed between the rear end surface of the inner ring and the front end surface of the rear lid falls down, which hinders the assembling work of the bearing device. In addition, the seal member attached to the rear end portion of the outer ring may come off from the outer peripheral surface of the rear lid, and foreign matter may enter the bearing.

そこで、本発明の課題は、車軸に圧入される内輪にスティックスリップが生じても、環状スペーサが倒れ込まないようにすることと、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることである。   Therefore, the object of the present invention is to prevent the annular spacer from falling down even if stick slip occurs in the inner ring that is press-fitted into the axle, and the seal member attached to the rear end of the outer ring is the outer periphery of the rear lid. It is to prevent it from coming off the surface.

上記の課題を解決するために、本発明は、鉄道車両の車軸を支持する転がり軸受の内輪の後端面と、その後面側で車軸に外嵌される後蓋の前端面との間に、これらの両端面に当接させて環状スペーサを介在させ、この環状スペーサの外周側端部に、内輪の後端面と後蓋の前端面との間をシールする環状弾性シール部材を固着した鉄道車両用軸受装置において、前記内輪の後端面と後蓋の前端面との間に、前記車軸の外径面と前記後蓋の内径面との間に嵌挿され、後蓋の内径面にタイトフィットに嵌合される円筒部と、この円筒部の前端から外向きに立ち上がり、前記環状スペーサの前端面に当接させるフランジ部を有するリング状部材を設けた構成を採用した。   In order to solve the above-described problems, the present invention is provided between a rear end surface of an inner ring of a rolling bearing that supports an axle of a railway vehicle and a front end surface of a rear cover that is fitted on the axle on the rear surface side. An annular spacer is disposed in contact with both end surfaces of the annular spacer, and an annular elastic seal member for sealing between the rear end surface of the inner ring and the front end surface of the rear lid is fixed to the outer peripheral side end portion of the annular spacer. In the bearing device, between the rear end surface of the inner ring and the front end surface of the rear lid, the shaft is fitted between the outer diameter surface of the axle and the inner diameter surface of the rear lid so that the inner surface of the rear lid is tightly fitted. A configuration in which a cylindrical part to be fitted and a ring-shaped member having a flange part rising outward from the front end of the cylindrical part and contacting the front end surface of the annular spacer is provided.

すなわち、内輪の後端面と後蓋の前端面との間に、車軸の外径面と後蓋の内径面との間に嵌挿され、後蓋の内径面にタイトフィットに嵌合される円筒部と、この円筒部の前端から外向きに立ち上がり、環状スペーサの前端面に当接させるフランジ部を有するリング状部材を設けることにより、スティックスリップによる内輪の間歇的な急前進によって後蓋が叩かれ、後蓋が内輪の後端側から離脱しても、環状スペーサが後蓋の前端面から離脱しないようにし、環状スペーサの倒れ込みを防止できるようにした。   That is, a cylinder that is fitted between the rear end surface of the inner ring and the front end surface of the rear lid, between the outer diameter surface of the axle and the inner diameter surface of the rear lid, and is tightly fitted to the inner diameter surface of the rear lid. And a ring-shaped member having a flange portion that rises outward from the front end of the cylindrical portion and abuts against the front end surface of the annular spacer, so that the rear lid is hit by intermittent abrupt advancement of the inner ring by stick-slip. Therefore, even if the rear lid is detached from the rear end side of the inner ring, the annular spacer is prevented from being detached from the front end surface of the rear lid, so that the annular spacer can be prevented from falling down.

前記リング状部材の円筒部を、前記車軸の外径面にもタイトフィットに嵌合されるようにすることにより、この円筒部に後蓋のブレーキ作用を持たせ、後蓋が内輪の急前進によって叩かれても内輪の後端側から離脱しないようにして、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることができる。   The cylindrical portion of the ring-shaped member is fitted to the outer diameter surface of the axle in a tight fit, so that the cylindrical portion has a brake action of the rear lid, and the rear lid rapidly advances the inner ring. The seal member attached to the rear end portion of the outer ring can be prevented from coming off from the outer peripheral surface of the rear lid so that the seal member is not separated from the rear end side of the inner ring even if it is struck.

本発明の鉄道車両用軸受装置は、内輪の後端面と後蓋の前端面との間に、車軸の外径面と後蓋の内径面との間に嵌挿され、後蓋の内径面にタイトフィットに嵌合される円筒部と、この円筒部の前端から外向きに立ち上がり、環状スペーサの前端面に当接させるフランジ部を有するリング状部材を設けたので、スティックスリップによる内輪の間歇的な急前進によって後蓋が叩かれ、後蓋が内輪の後端側から離脱しても、環状スペーサが後蓋の前端面から離脱しないようにし、環状スペーサの倒れ込みを防止することができる。   The railcar bearing device of the present invention is inserted between the rear end surface of the inner ring and the front end surface of the rear cover, between the outer diameter surface of the axle and the inner diameter surface of the rear cover, and is formed on the inner surface of the rear cover. A ring-shaped member with a cylindrical part that fits tightly and a flange part that rises outward from the front end of this cylindrical part and makes contact with the front end surface of the annular spacer is provided. Even if the rear cover is struck by abrupt advance and the rear cover is detached from the rear end side of the inner ring, the annular spacer is prevented from being detached from the front end surface of the rear cover, and the annular spacer can be prevented from falling down.

前記リング状部材の円筒部を、車軸の外径面にもタイトフィットに嵌合されるようにすることにより、この円筒部に後蓋のブレーキ作用を持たせ、後蓋が内輪の急前進によって叩かれても内輪の後端側から離脱しないようにして、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることができる。   The cylindrical portion of the ring-shaped member is fitted tightly to the outer diameter surface of the axle so that the cylindrical portion has a brake action of the rear lid. It is possible to prevent the seal member attached to the rear end portion of the outer ring from being detached from the outer peripheral surface of the rear lid, even if it is struck.

以下、図面に基づき、本発明の実施形態を説明する。図１に示すように、車軸１を支持する転がり軸受２としての、内輪３と外輪４の間に複列の円錐ころ５が配列された複列円錐ころ軸受と、内輪３の後面側で車軸１の拡径部１ａに嵌合固定され、車軸１に圧入される内輪３の軸方向位置を位置決めする後蓋６と、内輪３の前面側で車軸１に外嵌され、転がり軸受２を抜け止めする前蓋７とで基本的に構成されており、転がり軸受２の後面側と前面側とが、それぞれ外輪４の両端部に装着され、後蓋６と前蓋７の外周面に摺接するシール部材８で密封されるようになっている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings . As shown in FIG. 1, a double-row tapered roller bearing in which double-row tapered rollers 5 are arranged between an inner ring 3 and an outer ring 4 as a rolling bearing 2 that supports the axle 1, and an axle on the rear surface side of the inner ring 3. 1 is fitted and fixed to the enlarged-diameter portion 1a, and the rear lid 6 for positioning the axial position of the inner ring 3 that is press-fitted into the axle 1 is fitted to the axle 1 on the front side of the inner ring 3, and the rolling bearing 2 is removed. The front cover 7 is basically configured to be stopped, and the rear surface side and the front surface side of the rolling bearing 2 are respectively attached to both end portions of the outer ring 4 and are in sliding contact with the outer peripheral surfaces of the rear cover 6 and the front cover 7. It is sealed with a seal member 8.

図２に拡大して示すように、前記内輪３の後端面と後蓋６の前端面との間には、これらの両端面に当接する環状スペーサ９が介在し、その外周側端部に環状弾性シール部材９ａが固着されるとともに、車軸１の外径面と後蓋６の内径面との間に嵌挿され、これらの外径面と内径面とにタイトフィットに嵌合される円筒部１０ａと、円筒部１０ａの前端から外向きに立ち上がり、環状スペーサ９の前端面に当接されるフランジ部１０ｂとを有するリング状部材１０が介在している。   As shown in FIG. 2 in an enlarged manner, an annular spacer 9 is provided between the rear end face of the inner ring 3 and the front end face of the rear lid 6, and an annular end is provided at the outer peripheral end of the inner ring 3. The elastic seal member 9a is fixed, and is a cylindrical portion that is fitted between the outer diameter surface of the axle 1 and the inner diameter surface of the rear lid 6 and is tightly fitted to these outer diameter surface and inner diameter surface. A ring-shaped member 10 having 10a and a flange portion 10b that rises outward from the front end of the cylindrical portion 10a and contacts the front end surface of the annular spacer 9 is interposed.

前記後蓋６の前端面には段差部６ａが設けられ、環状スペーサ９の環状弾性シール部材９ａは、この段差部６ａの外径側で内輪３の後端面と後蓋６の前端面とに当接されている。また、環状スペーサ９の内周側は屈曲段差によって前面側が凹んでおり、この凹んだ環状スペーサ９の内周側前面に、リング状部材１０のフランジ部１０ｂが重ねられるように当接されている。   A step portion 6 a is provided on the front end surface of the rear cover 6, and the annular elastic seal member 9 a of the annular spacer 9 is formed on the outer diameter side of the step portion 6 a between the rear end surface of the inner ring 3 and the front end surface of the rear cover 6. It is in contact. Further, the inner peripheral side of the annular spacer 9 is recessed on the front side due to a bending step, and is in contact with the inner peripheral front surface of the recessed annular spacer 9 so that the flange portion 10b of the ring-shaped member 10 is overlapped. .

したがって、前記車軸１に圧入される内輪３にスティックスリップが生じて、後蓋６が内輪３の間歇的な急前進によって叩かれても、車軸１の外径面と後蓋６の内径面との間にタイトフィットに嵌合された円筒部１０ａを有するリング状部材１０が、環状スペーサ９の後蓋６の前端面からの離脱と倒れ込みを防止するとともに、後蓋６のブレーキ作用をし、後蓋６が内輪３の後端側から離脱しないようにして、外輪４の後端部に装着されたシール部材８の後蓋６の外周面からの外れを防止する。   Therefore, even if stick slip occurs in the inner ring 3 press-fitted into the axle 1 and the rear cover 6 is hit by intermittent rapid advancement of the inner ring 3, the outer diameter surface of the axle 1 and the inner diameter surface of the rear cover 6 The ring-shaped member 10 having the cylindrical portion 10a fitted in a tight fit in between prevents the rear separation of the annular spacer 9 from the front end surface of the rear cover 6 and falls down, and also acts as a brake on the rear cover 6. The rear cover 6 is prevented from detaching from the rear end side of the inner ring 3, thereby preventing the seal member 8 attached to the rear end part of the outer ring 4 from coming off from the outer peripheral surface of the rear cover 6.

この実施形態では、リング状部材１０の円筒部１０ａを、車軸１の外径面と後蓋６の内径面との両方にタイトフィットに嵌合したが、後蓋６の内径面のみにタイトフィットに嵌合することもでき、この場合は、環状スペーサ９の後蓋６の前端面からの離脱をなくして、その倒れ込みを防止することができる。   In this embodiment, the cylindrical portion 10a of the ring-shaped member 10 is tightly fitted to both the outer diameter surface of the axle 1 and the inner diameter surface of the rear lid 6, but is tightly fitted only to the inner diameter surface of the rear lid 6. In this case, detachment from the front end surface of the rear cover 6 of the annular spacer 9 can be eliminated, and the fall-down can be prevented.

上述した実施形態では、転がり軸受を複列円錐ころ軸受としたが、本発明に係る鉄道車両用軸受装置は、転がり軸受を複列円筒ころ軸受等の他の軸受としたものにも適用することができる。 Applied in the implementation described above, but a double row tapered roller bearing rolling bearing, a bearing device for a railway vehicle according to the present invention, also a rolling bearing that the other bearing such as a double row cylindrical roller bearing can do.

実施形態の鉄道車両用軸受装置を示す縦断面図 The longitudinal cross-sectional view which shows the bearing apparatus for railway vehicles of embodiment 図１の鉄道車両用軸受装置の後面側を拡大して示す縦断面図The longitudinal cross-sectional view which expands and shows the rear surface side of the bearing apparatus for rail vehicles of FIG. 従来の鉄道車両用軸受装置を示す縦断面図Longitudinal sectional view showing a conventional railway vehicle bearing device

１ 車軸
１ａ 拡径部
２ 転がり軸受
３ 内輪
４ 外輪
５ 円錐ころ
６ 後蓋
６ａ 段差部
７ 前蓋
８ シール部材
９ 環状スペーサ
９ａ 環状弾性シール部材
１０ リング状部材
１０ａ 円筒部
１０ｂ フランジ部 DESCRIPTION OF SYMBOLS 1 Axle 1a Diameter expansion part 2 Rolling bearing 3 Inner ring 4 Outer ring 5 Tapered roller 6 Rear cover 6a Step part 7 Front cover 8 Seal member 9 Annular spacer 9a Annular elastic seal member 10 Ring-shaped member 10a Cylindrical part 10b Flange part

Claims (2)

鉄道車両の車軸を支持する転がり軸受の内輪の後端面と、その後面側で車軸に外嵌される後蓋の前端面との間に、これらの両端面に当接させて環状スペーサを介在させ、この環状スペーサの外周側端部に、前記内輪の後端面と後蓋の前端面との間をシールする環状弾性シール部材を固着した鉄道車両用軸受装置において、前記内輪の後端面と後蓋の前端面との間に、前記車軸の外径面と前記後蓋の内径面との間に嵌挿され、後蓋の内径面にタイトフィットに嵌合される円筒部と、この円筒部の前端から外向きに立ち上がり、前記環状スペーサの前端面に当接させるフランジ部を有するリング状部材を設けたことを特徴とする鉄道車両用軸受装置。   Between the rear end surface of the inner ring of the rolling bearing that supports the axle of the railway vehicle and the front end surface of the rear lid that is fitted on the axle on the rear surface side, an annular spacer is interposed between the two end surfaces. In the bearing device for a railway vehicle, an annular elastic seal member for sealing between the rear end surface of the inner ring and the front end surface of the rear lid is fixed to the outer peripheral side end portion of the annular spacer. A cylindrical portion that is fitted between the outer diameter surface of the axle and the inner diameter surface of the rear lid and is tightly fitted to the inner diameter surface of the rear lid. A railway vehicle bearing device comprising a ring-shaped member having a flange portion that rises outward from a front end and abuts against a front end surface of the annular spacer. 前記リング状部材の円筒部を、前記車軸の外径面にもタイトフィットに嵌合されるようにした請求項１に記載の鉄道車両用軸受装置。   The bearing device for a railway vehicle according to claim 1, wherein the cylindrical portion of the ring-shaped member is tightly fitted to the outer diameter surface of the axle.
JP2006180071A 2006-06-29 2006-06-29 Railway vehicle bearing device Expired - Fee Related JP4829699B2 (en)

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ITUB20153371A1 (en) 2015-09-03 2017-03-03 Skf Ab SEALING DEVICE FOR UNITS? ROLLING BEARING

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JP3986775B2 (en) * 2001-08-07 2007-10-03 Ｎｔｎ株式会社 Railway vehicle bearing unit
JP2004316853A (en) * 2003-04-18 2004-11-11 Nsk Ltd Bearing device for railway vehicles
JP4060232B2 (en) * 2003-05-12 2008-03-12 Ｎｔｎ株式会社 Railway vehicle bearing device
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