JP2008008424A - Railroad vehicle bearing device - Google Patents

Railroad vehicle bearing device Download PDF

Info

Publication number
JP2008008424A
JP2008008424A JP2006180071A JP2006180071A JP2008008424A JP 2008008424 A JP2008008424 A JP 2008008424A JP 2006180071 A JP2006180071 A JP 2006180071A JP 2006180071 A JP2006180071 A JP 2006180071A JP 2008008424 A JP2008008424 A JP 2008008424A
Authority
JP
Japan
Prior art keywords
axle
inner ring
annular spacer
end surface
ring
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.)
Granted
Application number
JP2006180071A
Other languages
Japanese (ja)
Other versions
JP4829699B2 (en
Inventor
Makoto Tanaka
田中　　誠
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 JP2006180071A priority Critical patent/JP4829699B2/en
Publication of JP2008008424A publication Critical patent/JP2008008424A/en
Application granted granted Critical
Publication of JP4829699B2 publication Critical patent/JP4829699B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16C33/72—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

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an annular spacer from being slung and prevent a seal member mounted at the rear end of an outer ring from being removed the outer peripheral face of a rear cover even in the stick slip of an inner ring pressed into an axle. <P>SOLUTION: Between the rear end face of the inner ring 3 and the front end face of the rear cover 6, a ring member 10 is laid whose cylindrical portion 10a is tightly fitted between the outer diameter face of the axle 1 and the inner diameter face of the rear cover 6 and whose flange portion 10b abuts on the front end face of the annular spacer 9. Thereby, even when the rear cover 6 is beaten with sudden forward travel due to the stick slip of the inner ring 3, the annular spacer 9 is prevented from being separated from the front end face of the rear cover 6 and then being flung thereon. Braking operation on the rear cover 6 is given to the cylindrical portion 10a. Thereby, the rear cover 6 is prevented from being separated from the rear end side of the inner ring 3 and the seal member mounted at the rear end of the outer ring 4 is prevented from being removed from the outer peripheral face of the rear cover 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

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４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. 4, the railway vehicle bearing device that supports the axle of the railway vehicle is fitted and fixed to the diameter-enlarged 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 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 a 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 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.

また、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介在する前記環状スペーサの内周側端部に、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る円筒部を一体に形成した構成も採用した。   Further, the present invention is configured such that the both end surfaces are brought into contact 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. In the railway vehicle bearing device, an annular elastic seal member that seals 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 is integrally formed on the inner peripheral side end portion of the annular spacer that is interposed between the rear end surface and the front end surface of the rear lid. The formed structure was also adopted.

すなわち、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の内周側端部に、車軸の外径面と後蓋の内径面との間に嵌挿される円筒部を一体に形成することにより、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、環状スペーサが倒れ込まないようにした。   That is, a cylindrical portion that is inserted between the outer diameter surface of the axle and the inner diameter surface of the rear lid is integrated with the inner peripheral side end portion of the annular spacer interposed between the rear end surface of the inner ring and the front end surface of the rear lid. Thus, the annular spacer is prevented from falling down even if the rear lid is struck by intermittent abrupt advancement of the inner ring by stick-slip and the rear cover is detached from the rear end side of the inner ring.

前記環状スペーサの円筒部を、前記車軸の外径面と前記後蓋の内径面とに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。   By allowing the cylindrical portion of the annular spacer to be tightly fitted to the outer diameter surface of the axle and the inner diameter surface of the rear lid, the cylindrical portion is provided with a brake action of the rear lid, and the rear Even if the lid is struck by a sudden advance of the inner ring, the seal member attached to the rear end portion of the outer ring can be prevented from being detached from the outer peripheral surface of the rear cover.

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.

また、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介在する環状スペーサの内周側端部に、車軸の外径面と後蓋の内径面との間に嵌挿される円筒部を一体に形成するようにもしたので、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、環状スペーサが倒れ込まないようにすることができる。   Further, the bearing device for a railway vehicle of the present invention has an outer diameter surface of the axle and an inner diameter surface of the rear lid at the inner peripheral side end portion of the annular spacer interposed between the rear end surface of the inner ring and the front end surface of the rear lid. Since the cylindrical part to be inserted between the two is integrally formed, the rear cover is hit by intermittent sudden advance of the inner ring by stick slip, and even if the rear cover is detached from the rear end side of the inner ring, The annular spacer can be prevented from falling down.

前記環状スペーサの円筒部を、車軸の外径面と後蓋の内径面とに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。   By causing the cylindrical portion of the annular spacer to be tightly fitted to the outer diameter surface of the axle and the inner diameter surface of the rear lid, the cylindrical portion is provided with 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 the inner ring is struck by a sudden advance.

以下、図面に基づき、本発明の実施形態を説明する。図１および図２は、第１の実施形態を示す。この鉄道車両用軸受装置は、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. 1 and 2 show a first embodiment. As shown in FIG. 1, this railway vehicle bearing device includes 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 an axle 1. A rear cover 6 that 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 and positions the axial direction of the inner ring 3 that is press-fitted into the axle 1, and is attached to the axle 1 on the front side of the inner ring 3. The front cover 7 that is fitted and prevents the rolling bearing 2 from coming off is basically configured. The rear surface side and the front surface side of the rolling bearing 2 are respectively attached to both ends of the outer ring 4, and the rear cover 6 and the front cover It is sealed with a seal member 8 that is in sliding contact with the outer peripheral surface of the lid 7.

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.

図３は、第２の実施形態を示す。この鉄道車両用軸受装置は、基本的な構成は第１の実施形態のものと同じであり、前記別体のリング状部材１０を内輪３の後端面と後蓋６の前端面との間に介在させる替りに、前記環状スペーサ９の内周側端部に、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９ｂが一体に形成されている点が異なる。この実施形態では、円筒部９ｂが環状スペーサ９自身の倒れこみを防止するとともに、後蓋６に対するブレーキ作用をし、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。   FIG. 3 shows a second embodiment. This bearing device for a railway vehicle has the same basic configuration as that of the first embodiment, and the separate ring-shaped member 10 is disposed between the rear end surface of the inner ring 3 and the front end surface of the rear lid 6. Instead of being interposed, the inner end of the annular spacer 9 is fitted between the outer diameter surface of the axle 1 and the inner diameter surface of the rear lid 6 and tightly fitted to the outer diameter surface and the inner diameter surface. The difference is that the cylindrical portion 9b to be fitted to is integrally formed. In this embodiment, the cylindrical portion 9b prevents the annular spacer 9 itself from collapsing, and also acts as a brake on the rear lid 6 so that the rear lid 6 does not disengage from the rear end side of the inner ring 3. The seal member 8 attached to the rear end portion is prevented from coming off from the outer peripheral surface of the rear cover 6.

この実施形態では、車軸１の外径面と後蓋６の内径面との間に嵌挿した環状スペーサ９の円筒部９ｂを、これらの外径面と内径面とにタイトフィットに嵌合したが、円筒部９ｂをこれらの外径面と内径面の間に単に嵌挿するのみとしてもよく、この場合は、環状スペーサ９自身の倒れ込みを防止することができる。   In this embodiment, the cylindrical portion 9b of the annular spacer 9 fitted between the outer diameter surface of the axle 1 and the inner diameter surface of the rear lid 6 is tightly fitted to these outer diameter surface and inner diameter surface. However, the cylindrical portion 9b may be simply inserted between the outer diameter surface and the inner diameter surface, and in this case, the annular spacer 9 itself can be prevented from falling.

上述した各実施形態では、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。   In each of the embodiments described above, the rolling bearing is a double row tapered roller bearing. However, the rolling stock bearing device according to the present invention is also applied to a rolling bearing having another bearing such as a double row cylindrical roller bearing. be able to.

第１の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 1st 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. 第２の実施形態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 2nd Embodiment 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

符号の説明Explanation of symbols

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
９ｂ 円筒部
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 9b Cylindrical part 10 Ring-shaped member 10a Cylindrical part 10b Flange part

Claims (4)

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. 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介在する前記環状スペーサの内周側端部に、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る円筒部を一体に形成し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 an outer diameter surface of the axle and an inner diameter surface of the rear lid is formed integrally with an inner peripheral side end portion of the annular spacer that is interposed between the front end surface and the rear end surface. A railway vehicle bearing device. 前記環状スペーサの円筒部を、前記車軸の外径面と前記後蓋の内径面とにタイトフィットに嵌合されるようにした請求項３に記載の鉄道車両用軸受装置。   The bearing device for a railway vehicle according to claim 3, wherein the cylindrical portion of the annular spacer is tightly fitted to the outer diameter surface of the axle and the inner diameter surface of the rear lid.
JP2006180071A 2006-06-29 2006-06-29 Railway vehicle bearing device Expired - Fee Related JP4829699B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006180071A JP4829699B2 (en) 2006-06-29 2006-06-29 Railway vehicle bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006180071A JP4829699B2 (en) 2006-06-29 2006-06-29 Railway vehicle bearing device

Publications (2)

Publication Number Publication Date
JP2008008424A true JP2008008424A (en) 2008-01-17
JP4829699B2 JP4829699B2 (en) 2011-12-07

Family

ID=39066821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006180071A Expired - Fee Related JP4829699B2 (en) 2006-06-29 2006-06-29 Railway vehicle bearing device

Country Status (1)

Country Link
JP (1) JP4829699B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016216641A1 (en) 2015-09-03 2017-03-09 Aktiebolaget Skf Sealing device for rolling bearing unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000052986A (en) * 1998-08-18 2000-02-22 Nippon Seiko Kk Bearing device for rolling stock
JP2003049856A (en) * 2001-08-07 2003-02-21 Ntn Corp Bearing unit for railway rolling stock
JP2004500518A (en) * 1998-03-23 2004-01-08 エスケイエフ　エンジニアリング　アンド　リサーチ　センター　ビーブイ Bearing units with improved anti-fretting behavior, especially for railway axle boxes
JP2004316853A (en) * 2003-04-18 2004-11-11 Nsk Ltd Bearing device for railroad vehicle
JP2004332905A (en) * 2003-05-12 2004-11-25 Ntn Corp Bearing device for rail vehicle
JP2005337302A (en) * 2004-05-24 2005-12-08 Ntn Corp Bearing device for rolling stock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004500518A (en) * 1998-03-23 2004-01-08 エスケイエフ　エンジニアリング　アンド　リサーチ　センター　ビーブイ Bearing units with improved anti-fretting behavior, especially for railway axle boxes
JP2000052986A (en) * 1998-08-18 2000-02-22 Nippon Seiko Kk Bearing device for rolling stock
JP2003049856A (en) * 2001-08-07 2003-02-21 Ntn Corp Bearing unit for railway rolling stock
JP2004316853A (en) * 2003-04-18 2004-11-11 Nsk Ltd Bearing device for railroad vehicle
JP2004332905A (en) * 2003-05-12 2004-11-25 Ntn Corp Bearing device for rail vehicle
JP2005337302A (en) * 2004-05-24 2005-12-08 Ntn Corp Bearing device for rolling stock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016216641A1 (en) 2015-09-03 2017-03-09 Aktiebolaget Skf Sealing device for rolling bearing unit
US9926979B2 (en) 2015-09-03 2018-03-27 Aktiebolaget Skf Sealing device for rolling bearing unit

Also Published As

Publication number Publication date
JP4829699B2 (en) 2011-12-07

Similar Documents

Publication Publication Date Title
US20150071581A1 (en) Preassembled insertable roller bearing unit
JP2013190082A (en) Rolling bearing device
JP5252489B2 (en) Drive wheel support device
JP2006316884A (en) Bearing with sealing device
JP2007285500A (en) Bearing device for wheel
JP5328136B2 (en) Wheel bearing
JP4690170B2 (en) Double row rolling bearing
JP2007182956A (en) Oil seal
JP2007270873A (en) Sealing device
JP2008008424A (en) Railroad vehicle bearing device
JP5061818B2 (en) Wheel support device
JP2008082392A (en) Bearing device for railroad vehicle wheel shaft
JP2008196627A (en) Rolling bearing device
JP4829679B2 (en) Mounting method of magnetic encoder to wheel bearing device
JP6106425B2 (en) Sealing device
JP2005059830A (en) Wheel bearing assembly
JP2006002815A (en) Bearing unit for rolling stock
JP2006312961A (en) Bearing device for wheel
JP6629802B2 (en) Wheel bearing device
JP2007113759A (en) Hub unit bearing
JP2008019905A (en) Sealed roller bearing device
JP2008014473A (en) Wheel bearing device
JP2008019899A (en) Bearing device for wheel
JP2011208682A (en) Railway vehicle axle bearing unit
JP2008222098A (en) Semi-floating type axle supporting device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090313

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110224

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110607

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110711

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110830

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110916

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140922

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees