JP2006214570A - Support structure for shaft - Google Patents

Support structure for shaft Download PDF

Info

Publication number
JP2006214570A
JP2006214570A JP2005030715A JP2005030715A JP2006214570A JP 2006214570 A JP2006214570 A JP 2006214570A JP 2005030715 A JP2005030715 A JP 2005030715A JP 2005030715 A JP2005030715 A JP 2005030715A JP 2006214570 A JP2006214570 A JP 2006214570A
Authority
JP
Japan
Prior art keywords
shaft
inner ring
support structure
outer peripheral
sleeve
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.)
Withdrawn
Application number
JP2005030715A
Other languages
Japanese (ja)
Inventor
Shiro Ishikawa
司郎 石川
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 JP2005030715A priority Critical patent/JP2006214570A/en
Priority to PCT/JP2006/301726 priority patent/WO2006082871A1/en
Publication of JP2006214570A publication Critical patent/JP2006214570A/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/10—Force connections, e.g. clamping
    • F16C2226/16—Force connections, e.g. clamping by wedge action, e.g. by tapered or conical parts
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support structure for a shaft which can prevent occurrence of flaws to the inner diameter of an inner ring and the outer peripheral face of a shaft. <P>SOLUTION: The inner rings 21, 22 are fitted to the outer peripheral side of the shaft 10. An outer ring 23 is arranged to each outer peripheral side of the inner rings 21, 22. A plurality of rolling bodies 24 are arranged between the inner rings 21, 22 and the outer ring 23. A sleeve 1 is fitted into a space between the inner rings 21, 22 and the shaft 10. The sleeve 1 has lower hardness than that of the inner rings 21, 22 and the shaft 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、軸の支持構造に関するものであり、より具体的には、鉄道車両、産業機械などに使用される軸を回転可能に支持する軸の支持構造に関するものである。   The present invention relates to a shaft support structure, and more specifically to a shaft support structure that rotatably supports a shaft used in a railway vehicle, an industrial machine, or the like.

鉄道車両に使用される軸を支持する構造として、たとえば特開２００３−３１４５６６号公報には鉄道車両車軸用軸受が開示されている。このような鉄道車両車軸用軸受の内輪は車軸と堅く嵌り合っているため、内輪の内径における面取り繋ぎ部（以下、「内輪内径面取り繋ぎ部」とする）と車軸との間で高面圧が発生し、内輪よりも柔らかい車軸を傷つけてしまう。それを回避するためには、内輪内径面取り繋ぎ部が車軸に接触しないように、車軸にグルービングを施す方法がある。   As a structure for supporting a shaft used in a railway vehicle, for example, Japanese Patent Application Laid-Open No. 2003-314666 discloses a railway vehicle axle bearing. Since the inner ring of such a railway vehicle axle bearing fits tightly with the axle, there is a high surface pressure between the chamfered joint at the inner diameter of the inner ring (hereinafter referred to as “inner ring inner diameter chamfered joint”) and the axle. Occurs and damages the axle softer than the inner ring. In order to avoid this, there is a method of grooving the axle so that the inner ring inner diameter chamfered portion does not contact the axle.

図４は、車軸にグルービングが施された様子を示す概略断面図である。図４を参照して、車軸１１０は、複列軸受１２０により回転可能に支持されている。この複列軸受１２０は、内輪１２１、１２２と、単一の外輪１２３と、複数個の転動体１２４と、保持器１２５、１２６とを有している。内輪１２１と１２２とは、軸方向に分割されており、かつ車軸１１０の外周面に嵌められている。単一の外輪１２３は内輪１２１、１２２の外周側に配置されている。複数個の転動体１２４は内輪１２１、１２２と外輪１２３との間で転動可能なように複列（２列）に配置されている。保持器１２５、１２６は複数個の転動体１２４を相互に等間隔で保持している。   FIG. 4 is a schematic cross-sectional view showing a state in which grooving is performed on the axle. Referring to FIG. 4, axle 110 is rotatably supported by double row bearing 120. The double row bearing 120 includes inner rings 121 and 122, a single outer ring 123, a plurality of rolling elements 124, and cages 125 and 126. The inner rings 121 and 122 are divided in the axial direction and are fitted on the outer peripheral surface of the axle 110. The single outer ring 123 is disposed on the outer peripheral side of the inner rings 121 and 122. The plurality of rolling elements 124 are arranged in double rows (two rows) so as to roll between the inner rings 121 and 122 and the outer ring 123. The holders 125 and 126 hold a plurality of rolling elements 124 at regular intervals.

この車軸１１０には、グルービングが施されることにより外周面に溝部（凹部）１１０ａが形成されており、これにより車軸１１０の外周面が内輪内径面取り繋ぎ部Ｐ０と接触しないように構成されている。
特開２００３−３１４５６６号公報 Grooves (concave portions) 110a are formed on the outer peripheral surface of the axle 110 by grooving, so that the outer peripheral surface of the axle 110 is not in contact with the inner ring inner diameter chamfered joint portion P0. .
JP 2003-314666 A

しかしながら、図４を参照して、車軸１１０にグルービングを施したことにより、グルービング開始位置（溝部１１０ａの端部）Ｐ１において車軸１１０の外周面に凸部が生じ、その凸部が内輪１２２に接触することになるため、内輪内径に傷が生じてしまう。   However, with reference to FIG. 4, by grooving the axle 110, a convex portion is generated on the outer peripheral surface of the axle 110 at the grooving start position (end portion of the groove portion 110 a) P <b> 1, and the convex portion contacts the inner ring 122. As a result, the inner ring inner diameter is damaged.

また図４に示すように車軸の支持に複列の円錐ころ軸受を用いた場合には、内輪１２１と１２２との突合せ面Ｐ２の面取り繋ぎ部Ｐ３が凸部となり、この凸部により車軸１１０の外周面に傷が発生する場合がある。   As shown in FIG. 4, when a double row tapered roller bearing is used to support the axle, the chamfered joint portion P3 of the abutting surface P2 of the inner rings 121 and 122 becomes a convex portion, and this convex portion causes the axle 110 to Scratches may occur on the outer peripheral surface.

それゆえ本発明の目的は、内輪内径や軸外周面に傷が発生することを防止できる軸の支持構造を提供することである。   Therefore, an object of the present invention is to provide a shaft support structure capable of preventing the inner ring inner diameter and the shaft outer peripheral surface from being damaged.

本発明の軸の支持構造は、軸を回転可能に支持する軸の支持構造であって、軸の外周側に嵌められた内輪と、内輪の外周側に配置された外輪と、内輪および外輪間に配置された複数の転動体と、内輪と軸との間に嵌め込まれた、内輪および軸よりも硬度の低いスリーブとを備えたことを特徴とするものである。また、上記軸の支持構造は、転動体を円周方向で所定間隔に保持する保持器を備えていてもよい。   The shaft support structure of the present invention is a shaft support structure that rotatably supports the shaft, and includes an inner ring fitted on the outer peripheral side of the shaft, an outer ring disposed on the outer peripheral side of the inner ring, and between the inner ring and the outer ring. And a plurality of rolling elements disposed on the inner ring and a sleeve having a lower hardness than the inner ring and the shaft, which are fitted between the inner ring and the shaft. The shaft support structure may include a cage for holding the rolling elements at a predetermined interval in the circumferential direction.

本発明の軸の支持構造によれば、スリーブが内輪と軸との間に嵌め込まれているため、例えばグルービングされた軸を用いる場合、そのグルービング開始位置が内輪内径に直接接触することがなくなり、内輪の内径に傷が発生することを防止することができる。また、複列の円錐ころ軸受を用いた場合にも内輪の突合せ面の面取り繋ぎ部が軸の外周面に直接接触することがなくなり、軸の外周面に傷が発生することを防止することができる。またスリーブは内輪および軸よりも低い硬度を有しているため、スリーブが内輪または軸に接触しても、内輪の内径または軸の外周面に傷が発生することはない。   According to the shaft support structure of the present invention, since the sleeve is fitted between the inner ring and the shaft, for example, when using a grooved shaft, the grooving start position does not directly contact the inner ring inner diameter, It is possible to prevent damage to the inner diameter of the inner ring. Further, even when a double-row tapered roller bearing is used, the chamfered joint portion of the abutting surface of the inner ring is not in direct contact with the outer peripheral surface of the shaft, and it is possible to prevent the outer peripheral surface of the shaft from being damaged. it can. Further, since the sleeve has a lower hardness than the inner ring and the shaft, even if the sleeve contacts the inner ring or the shaft, the inner ring of the inner ring or the outer peripheral surface of the shaft is not damaged.

上記の軸の支持構造において好ましくは、軸はグルービングされており、スリーブは、内輪嵌合部の幅全体を覆い、かつ軸のグルービングされた部分の少なくとも一部を覆っている。   In the shaft support structure described above, the shaft is preferably grooved, and the sleeve covers the entire width of the inner ring fitting portion and covers at least a part of the grooved portion of the shaft.

これにより、軸の内輪嵌合部の幅全体にわたって軸の外周面および内輪の内径に傷が発生することを防止することができる。   Thereby, it is possible to prevent the outer peripheral surface of the shaft and the inner diameter of the inner ring from being damaged over the entire width of the inner ring fitting portion of the shaft.

以上説明したように本発明の軸の支持構造によれば、内輪内径や軸外周面への傷の発生を防止することができる。   As described above, according to the shaft support structure of the present invention, it is possible to prevent the inner ring inner diameter and the shaft outer peripheral surface from being damaged.

以下、本発明の実施の形態について図に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の一実施の形態における軸の支持構造の構成を概略的に示す断面図である。図１を参照して、本実施の形態の軸の支持構造は、グルービングされた軸１０を回転可能に支持する軸１０の支持構造であって、軸１０の外周側に嵌められた内輪２１、２２と、内輪２１、２２の外周側に配置された外輪２３と、内輪２１、２２および外輪２３間に配置された複数の転動体２４と、スリーブ１とを備えている。スリーブ１は、内輪２１、２２と軸１０との間に嵌め込まれており、かつ内輪２１、２２および軸１０よりも低い硬度を有している。   FIG. 1 is a cross-sectional view schematically showing a configuration of a shaft support structure according to an embodiment of the present invention. Referring to FIG. 1, the shaft support structure of the present embodiment is a shaft 10 support structure that rotatably supports a grooved shaft 10, and includes an inner ring 21 fitted on the outer peripheral side of the shaft 10, 22, an outer ring 23 disposed on the outer peripheral side of the inner rings 21, 22, a plurality of rolling elements 24 disposed between the inner rings 21, 22 and the outer ring 23, and the sleeve 1. The sleeve 1 is fitted between the inner rings 21 and 22 and the shaft 10 and has a lower hardness than the inner rings 21 and 22 and the shaft 10.

軸１０は、たとえば鉄道車両に用いられる車軸であり、グルービングを施されることにより外周面に溝部（凹部）１０ａを有している。この溝部１０ａは内輪２２の内輪内径面取り繋ぎ部Ｐ０よりも内輪２２の下側（内周側）に入り込んでいる。この軸１０を回転自在に支持する転がり軸受はたとえば複列の円錐ころ軸受２０であり、円錐ころ軸受２０は内輪２１、２２と、外輪２３と、複数の転動体２４と、保持器２５、２６とにより構成されている。   The shaft 10 is an axle used for, for example, a railway vehicle, and has a groove (concave portion) 10a on the outer peripheral surface by being grooved. This groove portion 10a enters the lower side (inner peripheral side) of the inner ring 22 than the inner ring inner diameter chamfered joint portion P0 of the inner ring 22. The rolling bearing that rotatably supports the shaft 10 is, for example, a double row tapered roller bearing 20, and the tapered roller bearing 20 includes inner rings 21 and 22, an outer ring 23, a plurality of rolling elements 24, and cages 25 and 26. It is comprised by.

この円錐ころ軸受２０の内輪は、たとえば互いに軸方向に分割された内輪２１、２２により構成されている。外輪は、たとえば２つの内輪２１、２２に対して単一の外輪２３により構成されている。複数の転動体は、たとえば２つの内輪２１、２２と単一の外輪２３との間に複列（たとえば２列）に配置された複数の円錐ころ２４より構成されている。複数の円錐ころ２４は、保持器２５、２６により相互に等間隔で保持されている。つまり、保持器２５、２６は、転動体としての円錐ころ２４を内輪２１、２２の円周方向で所定間隔（互いに等間隔）に保持している。   The inner ring of the tapered roller bearing 20 is constituted by inner rings 21 and 22 that are divided in the axial direction, for example. The outer ring is constituted by a single outer ring 23 with respect to, for example, the two inner rings 21 and 22. The plurality of rolling elements are constituted by a plurality of tapered rollers 24 arranged in a double row (for example, two rows) between two inner rings 21 and 22 and a single outer ring 23, for example. The plurality of tapered rollers 24 are held at equal intervals by cages 25 and 26. That is, the cages 25 and 26 hold the tapered rollers 24 as rolling elements at a predetermined interval (equal intervals) in the circumferential direction of the inner rings 21 and 22.

本実施の形態において特に注目すべき点は、軸１０と内輪２１、２２との間にスリーブ１が嵌め込まれており、このスリーブ１が軸１０および内輪２１、２２よりも低い硬度を有することである。このスリーブ１の硬度は、ブリネル硬さでＨＢ１００以上３８０以下であることが好ましい。   The point to be particularly noted in the present embodiment is that the sleeve 1 is fitted between the shaft 10 and the inner rings 21 and 22, and the sleeve 1 has a lower hardness than the shaft 10 and the inner rings 21 and 22. is there. The sleeve 1 preferably has a Brinell hardness of HB100 or more and 380 or less.

このスリーブ１は、内輪嵌合部の幅全体を覆っていることが好ましく、またグルービングにより形成された溝部１０ａの外周側の一部分または全部を覆っていることが好ましい。但し、スリーブ１には軸方向に切り欠きがあっても良い。ここで内輪嵌合部とは、内輪２１、２２の内周領域に位置する軸１０の部分からグルービングにより形成された溝部１０ａの部分を除いた部分である。   The sleeve 1 preferably covers the entire width of the inner ring fitting portion, and preferably covers a part or all of the outer peripheral side of the groove portion 10a formed by grooving. However, the sleeve 1 may have a notch in the axial direction. Here, the inner ring fitting portion is a portion obtained by removing the portion of the groove portion 10a formed by grooving from the portion of the shaft 10 located in the inner peripheral region of the inner rings 21, 22.

またスリーブ１の材質は、Ｓ１０Ｃ（ＪＩＳ（日本工業規格）における機械構造用炭素鋼鋼材）であることが好ましい。このＳ１０Ｃは、炭素（Ｃ）を０．０８〜０．１３％、シリコン（Ｓｉ）を０．１５〜０．３５％、マンガン（Ｍｎ）を０．３０〜０．６０％、リン（Ｐ）を０．０３０％以下、硫黄（Ｓ）を０．０３５％以下含有する組成を有している。   Moreover, it is preferable that the material of the sleeve 1 is S10C (carbon steel for machine structure in JIS (Japanese Industrial Standards)). This S10C is carbon (C) 0.08-0.13%, silicon (Si) 0.15-0.35%, manganese (Mn) 0.30-0.60%, phosphorus (P) Of 0.030% or less and sulfur (S) of 0.035% or less.

このスリーブ１は、図２に示すように、たとえば円錐台形状の外径を有しており、かつ軸１０を挿通することが可能なように中空形状を有している。またスリーブ１は、図３に示すように、円筒形状の外径を有しており、かつ軸１０を挿通することが可能なように中空形状を有していてもよい。   As shown in FIG. 2, the sleeve 1 has a frustoconical outer diameter, for example, and has a hollow shape so that the shaft 10 can be inserted. As shown in FIG. 3, the sleeve 1 has a cylindrical outer diameter and may have a hollow shape so that the shaft 10 can be inserted.

本実施の形態によれば、スリーブ１が内輪２１、２２と軸１０との間に嵌め込まれているため、グルービングされた軸１０のグルービング開始位置Ｐ１が内輪２１、２２の内径に直接接触することがなくなり、内輪２１、２２の内径に傷が発生することを防止することができる。また、複列の円錐ころ軸受２０を用いた場合にも内輪２１、２２の突合せ面Ｐ２の面取り繋ぎ部Ｐ３が軸１０の外周面に直接接触することがなくなり、軸１０の外周面に傷が発生することも防止することができる。またスリーブ１は内輪２１、２２および軸１０よりも低い硬度を有しているため、スリーブ１が内輪２１、２２または軸１０に接触しても、内輪２１、２２の内径または軸１０の外周面に傷が発生することはない。   According to the present embodiment, since the sleeve 1 is fitted between the inner rings 21, 22 and the shaft 10, the grooving start position P1 of the grooved shaft 10 is in direct contact with the inner diameter of the inner rings 21, 22. It is possible to prevent the inner rings 21 and 22 from being damaged on the inner diameter. Further, even when the double-row tapered roller bearing 20 is used, the chamfered joint portion P3 of the butted surfaces P2 of the inner rings 21 and 22 is not in direct contact with the outer peripheral surface of the shaft 10, and the outer peripheral surface of the shaft 10 is damaged. Occurrence can also be prevented. Since the sleeve 1 has lower hardness than the inner rings 21 and 22 and the shaft 10, the inner diameter of the inner rings 21 and 22 or the outer peripheral surface of the shaft 10 even when the sleeve 1 contacts the inner rings 21 and 22 or the shaft 10. No scratches will occur.

またスリーブ１が内輪嵌合部の幅全体を覆い、かつ軸のグルービングされた部分の少なくとも一部を覆うことにより、内輪嵌合部の幅全体にわたって軸１０の外周面および内輪２１、２２の内径に傷が発生することを防止することができる。   The sleeve 1 covers the entire width of the inner ring fitting portion and covers at least a part of the grooved portion of the shaft, so that the outer peripheral surface of the shaft 10 and the inner diameters of the inner rings 21, 22 are covered over the entire width of the inner ring fitting portion. Scratches can be prevented from occurring.

なお上記の実施の形態においては、鉄道車両に用いられる車軸の支持構造について説明したが、本発明は産業機械などに使用される軸の支持構造にも適用することができる。また軸を支持する軸受として複列の円錐ころ軸受について説明したが、本発明はこれに限定されるものではなく、他の転がり軸受にて軸を支持するものにも適用することができる。   In the above-described embodiment, the axle support structure used in the railway vehicle has been described. However, the present invention can also be applied to an axle support structure used in an industrial machine or the like. Further, the double-row tapered roller bearing has been described as the bearing for supporting the shaft. However, the present invention is not limited to this, and can be applied to a bearing that supports the shaft by another rolling bearing.

今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

本発明は、鉄道車両、産業機械などに使用される軸であって、グルービングされた軸の支持構造に特に有利に適用され得る。   INDUSTRIAL APPLICABILITY The present invention is a shaft used for a railway vehicle, an industrial machine, etc. and can be applied particularly advantageously to a grooved shaft support structure.

本発明の一実施の形態における軸の支持構造の構成を概略的に示す断面図である。It is sectional drawing which shows schematically the structure of the support structure of the axis | shaft in one embodiment of this invention. 本発明の一実施の形態における軸の支持構造に用いられるスリーブが円錐台形状を有する場合の構成を示す概略斜視図である。It is a schematic perspective view which shows a structure in case the sleeve used for the support structure of the shaft in one embodiment of this invention has a truncated cone shape. 本発明の一実施の形態における軸の支持構造に用いられるスリーブが円筒形状を有する場合の構成を示す概略斜視図である。It is a schematic perspective view which shows a structure in case the sleeve used for the support structure of the shaft in one embodiment of this invention has a cylindrical shape. 車軸にグルービングが施された様子を示す概略断面図である。It is a schematic sectional drawing which shows a mode that the grooving was given to the axle.

符号の説明Explanation of symbols

１ スリーブ、１０ａ 溝部、１０ 軸、２０ 転がり軸受、２１，２２ 内輪、２３ 外輪、２４ 転動体、２５，２６ 保持器、Ｐ０ 内輪内径面取り繋ぎ部、Ｐ１ グルービング開始位置、Ｐ２ 突合せ面、Ｐ３ 面取り繋ぎ部。   1 sleeve, 10a groove, 10 shaft, 20 rolling bearing, 21, 22 inner ring, 23 outer ring, 24 rolling element, 25, 26 cage, P0 inner ring inner diameter chamfered joint, P1 grooving start position, P2 butted surface, P3 chamfered joint Department.

Claims (2)

軸を回転可能に支持する軸の支持構造であって、
前記軸の外周側に嵌められた内輪と、
前記内輪の外周側に配置された外輪と、
前記内輪および前記外輪間に配置された複数の転動体と、
前記内輪と前記軸との間に嵌め込まれた、前記内輪および前記軸よりも硬度の低いスリーブとを備えた、軸の支持構造。 A shaft support structure for rotatably supporting the shaft,
An inner ring fitted on the outer peripheral side of the shaft;
An outer ring disposed on the outer peripheral side of the inner ring;
A plurality of rolling elements disposed between the inner ring and the outer ring;
A shaft support structure comprising the inner ring and a sleeve having a lower hardness than the shaft, which is fitted between the inner ring and the shaft. 前記軸はグルービングされており、
前記スリーブは、内輪嵌合部の幅全体を覆い、かつ前記軸のグルービングされた部分の少なくとも一部を覆っていることを特徴とする、請求項１に記載の軸の支持構造。 The axis is grooved,
The shaft support structure according to claim 1, wherein the sleeve covers the entire width of the inner ring fitting portion and covers at least a part of the grooved portion of the shaft.
JP2005030715A 2005-02-07 2005-02-07 Support structure for shaft Withdrawn JP2006214570A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2005030715A JP2006214570A (en) 2005-02-07 2005-02-07 Support structure for shaft
PCT/JP2006/301726 WO2006082871A1 (en) 2005-02-07 2006-02-02 Supporting structure for shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005030715A JP2006214570A (en) 2005-02-07 2005-02-07 Support structure for shaft

Publications (1)

Publication Number Publication Date
JP2006214570A true JP2006214570A (en) 2006-08-17

Family

ID=36777254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005030715A Withdrawn JP2006214570A (en) 2005-02-07 2005-02-07 Support structure for shaft

Country Status (2)

Country Link
JP (1) JP2006214570A (en)
WO (1) WO2006082871A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2866282B2 (en) * 1993-10-29 1999-03-08 エヌティエヌ株式会社 Axle bearing device and bearing clearance measuring method
JP2003130062A (en) * 2001-10-22 2003-05-08 Nsk Ltd Hub unit bearing
CN1323005C (en) * 2001-12-03 2007-06-27 日本精工株式会社 Electric power steering device

Also Published As

Publication number Publication date
WO2006082871A1 (en) 2006-08-10

Similar Documents

Publication Publication Date Title
JP3867860B2 (en) Rolling bearing
US10184517B2 (en) Needle roller bearing with double row of retainers
JP2010106974A (en) Tapered roller bearing
JP2007100738A (en) Roller bearing
JP2009047239A (en) Welding retainer and roller bearing
JP5050619B2 (en) Tapered roller bearing
JP2006070909A (en) Ball bearing
JP2006214570A (en) Support structure for shaft
JP2007255563A (en) Dual row roller bearing
JP2018105411A (en) Double-row conical roller bearing
JP2008232171A (en) Roller bearing
JP4127268B2 (en) Rolling roll support structure
JP2008157371A (en) Rolling bearing, spindle supporting structure for railroad vehicle main motor, and seal removing method and device for rolling bearing
JP2005344742A (en) Self-aligning roller bearing
JP2009162271A (en) Double-fractured or cut outer ring, its manufacturing method and split rolling bearing
JP2005061594A (en) Automatic aligning roller bearing
JP2008057571A (en) Roller for rolling bearing and rolling bearing
JP4731198B2 (en) Roller bearing
JP2008095738A (en) Double row roller bearing device
JP2006329388A (en) Rolling bearing with seal
JP2010053886A (en) Retainer for thrust roller bearing
JP2007255631A (en) Tapered roller bearing
JP2007327591A (en) Bearing device for wheel
JP2013242024A (en) Thrust cylindrical roller bearing
JP2005344848A (en) Roller inserting method of roller bearing and roller bearing

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20080513