JP2000065078A - Rolling bearing for rolling stock axle - Google Patents
Rolling bearing for rolling stock axleInfo
- Publication number
- JP2000065078A JP2000065078A JP10237892A JP23789298A JP2000065078A JP 2000065078 A JP2000065078 A JP 2000065078A JP 10237892 A JP10237892 A JP 10237892A JP 23789298 A JP23789298 A JP 23789298A JP 2000065078 A JP2000065078 A JP 2000065078A
- Authority
- JP
- Japan
- Prior art keywords
- cap
- center hole
- shaft
- axle
- 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
Links
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
- 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
-
- 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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
-
- 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)
- Sealing Of Bearings (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、車軸に内輪が固定
され外輪が軸箱側に固定された鉄道車両車軸用ころ軸受
装置の車軸端のセンタ穴を露出するために設けられた穴
を塞ぐためのキャップ構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention covers a hole provided for exposing a center hole at an axle end of a roller bearing device for a railway vehicle axle in which an inner ring is fixed to an axle and an outer ring is fixed to an axle box side. For a cap structure.
【0002】従来、内輪が車軸に固定され外輪が軸箱等
に固定された軸受とからなる鉄道車両車軸用ころ軸受装
置においては、車軸端及び軸受を保護するために、シー
ルや前蓋が設けられ車軸端を外部から保護するようにさ
れている。しかし、運行によって摩滅した車輪の踏面を
研削するためには車軸端に設けられたセンタ穴を露出さ
せ、このセンタ穴により車軸を支持して行っている。そ
こで、実開平5−25023号公報では軸端を覆うよう
なゴム製やプラスチックス等のカバーを設けこのカバー
を取り外すことにより軸端を露出させるようにしてい
る。しかし、このものは軸端全体をカバーするので大き
くなる。また、大きいため飛石等のあたる率が高く破損
の確率が大きくなる。さらにはコストアップとなるとい
う問題があった。2. Description of the Related Art Conventionally, in a roller bearing device for a railway vehicle axle, which includes a bearing in which an inner ring is fixed to an axle and an outer ring is fixed to an axle box or the like, a seal or a front cover is provided to protect the axle end and the bearing. The axle end is protected from the outside. However, in order to grind the treads of the wheels worn by driving, a center hole provided at the end of the axle is exposed, and the axle is supported by the center hole. Therefore, in Japanese Utility Model Laid-Open No. 5-25023, a cover made of rubber, plastics, or the like is provided to cover the shaft end, and the shaft end is exposed by removing the cover. However, this is large because it covers the entire shaft end. In addition, since the stone is large, the hit rate of a flying stone or the like is high, and the probability of breakage increases. Further, there is a problem that the cost is increased.
【0003】一方、実公昭46−20980号公報で
は、単純に前蓋に中心穴を設けこの中心穴に栓を螺着す
るようにして、センター穴の露出を可能にしている。し
かし、このものではねじ加工が必要でありコストがかか
り、またねじ構造であるので取り外し作業に時間がかか
るという問題があった。さらには回転による緩み防止の
ため回り止めを必要とした。[0003] On the other hand, in Japanese Utility Model Publication No. 46-20980, a center hole is simply provided in the front lid, and a plug is screwed into the center hole so that the center hole can be exposed. However, in this case, there is a problem that the screw processing is necessary and the cost is high, and since the screw structure is used, it takes a long time to remove. In addition, a detent was required to prevent loosening due to rotation.
【0004】[0004]
【発明が解決しようとする課題】そこで、後者のねじ構
造に代え前者のゴム製のカバーを後者の中心穴に設けれ
ばよいが、前者のカバーでは前述のように構造が複雑に
なりカバーの露出部が多く破損しやすく、コストが高
い、さらに使用時の脱落等の防止を強化するために嵌合
部の嵌合を強くすると、ねじ構造以上に取り外しが困難
となり、力を要し、さらには材料が破損してしまうこと
がある等という問題があった。Therefore, instead of the latter screw structure, the former rubber cover may be provided in the center hole of the latter, but the former cover has a complicated structure as described above, and the cover has a complicated structure. Exposed parts are easily damaged and costly, and if the fitting part is strengthened to strengthen the prevention of falling off during use, it will be more difficult to remove than the screw structure, requiring more power, and However, there is a problem that the material may be damaged.
【0005】本発明の課題は、上記問題点に鑑みて、セ
ンタ穴を露出可能な鉄道車両車軸用ころ軸受装置におい
て、回転による緩みがなく、加工コストが低く、取り外
し作業が容易なキャップ構造を有する鉄道車両車軸用こ
ろ軸受装置を提供するものである。SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a roller bearing device for a railway vehicle axle capable of exposing a center hole, which has no loosening due to rotation, has a low processing cost, and is easy to remove. A roller bearing device for a railway vehicle axle having the same.
【0006】[0006]
【課題を解決するための手段】そこで、本発明者等は、
前者のような覆うのではなく、外部露出が少ない断面凹
形状のキャップを穴に挿入するタイプ、特にキャップの
嵌合を強固にするため中心穴に周溝を設けこの周溝に嵌
合する凸部を外周に有するゴム製の断面凹状のキャップ
を挿入して種々の実験をした。鉄道車両車軸のセンタ穴
は大きく、センタ穴を露出するための中心穴は直径が5
0mm前後の大きな穴となり、穴に挿入されたキャップ
を外すには当然素手ではできないように強固に嵌合させ
るので、マイナスドライバでこじあけたり、プライヤあ
るいはペンチ等で引っ張る。この場合、マイナスドライ
バの使用ではキャップに傷が付き易く再使用が困難とな
る。そこで、プライヤ等でキャップの一部を引き上げる
ことになる。キャップの外周部を引っ張りあげるために
外周部につかみ部を設けると外部への突起が多くなり好
ましくない。また、外周部の変形が大きくなりマイナス
ドライバと同様に再使用が困難となるおそれがあった。Means for Solving the Problems Accordingly, the present inventors have
Instead of covering like the former, a type that inserts a cap with a concave cross section with less external exposure into the hole, especially a peripheral groove is provided in the center hole to strengthen the fitting of the cap, and a convex that fits into this peripheral groove Various experiments were conducted by inserting a rubber-made cap having a concave section on the outer periphery. The center hole of the railcar axle is large, and the center hole for exposing the center hole has a diameter of 5 mm.
It becomes a large hole of about 0 mm, and it is firmly fitted so that the cap inserted in the hole cannot be removed with bare hands. In this case, the use of a flathead screwdriver easily damages the cap, making it difficult to reuse it. Therefore, a part of the cap is pulled up by a plier or the like. It is not preferable to provide a grip portion on the outer peripheral portion to pull up the outer peripheral portion of the cap, since the number of protrusions to the outside increases. In addition, there is a possibility that the deformation of the outer peripheral portion becomes large and it becomes difficult to re-use the same as with a flathead screwdriver.
【0007】そこで、底部に板状のつかみ部を設けて引
き上げるようにしたが底面中央部ばかり伸びてしまい外
周部の変形が少なくキャップがはずれにくく相当な力を
要した。これに対して、キャップの外周部側に板状のつ
かみ部を設けて引き上げると非常に簡単にキャップがは
ずれることを見いだした。In view of the above, a plate-like grip portion is provided at the bottom to lift the cap. However, the cap extends only at the center of the bottom surface, the outer peripheral portion is less deformed, and the cap is hard to come off and a considerable force is required. On the other hand, it has been found that when a plate-shaped grip portion is provided on the outer peripheral side of the cap and the cap is pulled up, the cap is easily detached.
【0008】かかる知見に基づき、本発明においては、
軸端にセンタ穴が設けられた軸と、内輪が軸に固定され
外輪が軸箱等に固定された軸受と、軸受の両端に設けら
れたシールと、軸受とシールと軸受より延出する軸の軸
端側を覆うようにされた前蓋と、を有する鉄道車両車軸
用ころ軸受装置において、前蓋の中央部にセンタ穴が露
出可能な中心穴を設け、さらに中心穴内周に周溝を設
け、中心穴内周及び周溝に外周凸部が嵌合し着脱可能な
断面凹状の弾性材料からなるキャップを設ける。さら
に、このキャップの外周内壁に一辺が結合し隣接辺が底
部径方向に結合する板状のつかみ部を設けることによっ
て、上記課題を解決した。Based on this finding, the present invention provides:
A shaft with a center hole at the shaft end, a bearing with the inner ring fixed to the shaft and an outer ring fixed to the shaft box, etc., seals provided at both ends of the bearing, a bearing, a shaft extending from the seal and the bearing A front cover adapted to cover the shaft end side of the roller bearing device for a railway vehicle axle, wherein a center hole in which a center hole can be exposed is provided at a central portion of the front cover, and a peripheral groove is further provided on the inner periphery of the center hole. A cap made of a resilient material having a concave cross section is provided in which the outer convex portion is fitted to the inner periphery and the peripheral groove of the center hole and is detachable. Further, the above-mentioned problem has been solved by providing a plate-like grip portion in which one side is connected to the inner peripheral wall of the cap and the adjacent side is connected in the bottom radial direction.
【0009】前述のように板状つかみ部は外周内壁に近
い程穴からの離脱がし易い。そこで、板状のつかみ部は
キャップ中心部より外周内壁側に設ける。As described above, the closer the plate-shaped grip portion is to the inner peripheral wall, the easier it is to separate from the hole. Therefore, the plate-shaped grip portion is provided on the outer peripheral inner wall side from the center portion of the cap.
【0010】つかみ部は一箇所あればよいが、長期間の
使用、脱着の繰り返しによるつかみ部の破損、回転体と
してのバランス、成形時のゴム材料等の流れ等を考慮し
て、板状のつかみ部はキャップ中心に対して対称に配置
した一枚の板状にして中心対称に2箇所のつかみ部を設
けると良い。It is sufficient that the grip portion is only one. However, in consideration of long-term use, breakage of the grip portion due to repeated attachment / detachment, balance as a rotating body, flow of rubber material at the time of molding, etc. It is preferable that the grip portion is a single plate symmetrically arranged with respect to the center of the cap, and two grip portions are provided symmetrically with respect to the center.
【0011】請求項3のようにつかみ部が一枚の板状に
された場合、中央部をつかんで引っ張ろうとすることが
ある。かかる場合は余分な力を必要とし適切な作業とな
らない。そこで、中央部に厚肉部を設け、つかみ部が外
周壁側にあることを示唆するようにした。また成形時の
ゴム材料等の流れもよくなる。In the case where the grip portion is formed as a single plate as described in claim 3, the central portion may be gripped and pulled. In such a case, an extra force is required and the operation is not appropriate. Therefore, a thick portion is provided at the center to indicate that the grip portion is on the outer peripheral wall side. Also, the flow of the rubber material and the like during molding is improved.
【0012】[0012]
【発明の実施の形態】本発明の実施の形態について図面
を参照して説明する。図1は本発明の鉄道車両車軸用こ
ろ軸受装置の断面図、図2は図1に示すキャップの
(a)は正面図、(b)は(a)のA−A線断面図、
(c)は(a)のB−B線断面図である。図1におい
て、鉄道車両車軸1の軸1aに段部1bに当接して反軸
端側鍔部3a、円錐ころ軸受2の内輪2a、間座2e、
内輪2a、軸端側鍔部3bの順に嵌挿され、軸端に設け
られた前蓋4を軸端側鍔部に当接させることにより軸方
向に固着されている。前蓋4は3本のボルト11を軸端
に設けられたねじ穴1cに螺着させて軸方向に付勢、固
定されている。内輪2aに対応して円錐ころ2cを介し
て外輪2bが配設され、外輪は図示しない軸箱を介して
台枠等に固定され、車軸1が回転可能にされる。Embodiments of the present invention will be described with reference to the drawings. 1 is a cross-sectional view of a roller bearing device for an axle of a railway vehicle according to the present invention, FIG. 2 is a front view of the cap shown in FIG. 1, (b) is a cross-sectional view taken along line AA of (a),
(C) is a sectional view taken along line BB of (a). In FIG. 1, an axle 1 a of a railway vehicle axle 1 abuts a step portion 1 b on an opposite shaft end side flange portion 3 a, an inner ring 2 a of a tapered roller bearing 2, a spacer 2 e,
The inner ring 2a and the shaft end side flange portion 3b are fitted in this order, and are fixed in the axial direction by bringing the front cover 4 provided at the shaft end into contact with the shaft end side flange portion. The front cover 4 is biased and fixed in the axial direction by screwing three bolts 11 into a screw hole 1c provided at the shaft end. An outer ring 2b is provided via a tapered roller 2c corresponding to the inner ring 2a, and the outer ring is fixed to an underframe or the like via an axle box (not shown), and the axle 1 is rotatable.
【0013】外輪2bの両端部2fには環状の軸受シー
ル5が取付カバー6を介して設けられている。軸受シー
ル5の内周シール部はそれぞれ反軸端側鍔部3a、軸端
側鍔部3bの外周に摺動回転可能にされている。軸1の
軸端にはセンタ穴1dがあけられている。前蓋4の中央
部に中心穴7が設けられておりセンタ穴1dが露出可能
にされている。中心穴7の内周7aには周溝7bが設け
られている。中心穴7にキャップ8が挿入されている。
図2に示すようにキャップ8は凹状形状断面であって、
外周面8aに外周凸部8bがもうけられ、外周面が中心
穴7の内周面7aに弾性的に嵌合し、周溝7bに外周凸
部が嵌め込まれ嵌合する。An annular bearing seal 5 is provided at both ends 2f of the outer race 2b via a mounting cover 6. The inner peripheral seal portion of the bearing seal 5 is slidably rotatable around the outer periphery of the opposite shaft end side flange portion 3a and the shaft end side flange portion 3b. A center hole 1d is formed in the shaft end of the shaft 1. A center hole 7 is provided at the center of the front lid 4 so that the center hole 1d can be exposed. A circumferential groove 7b is provided in an inner circumference 7a of the center hole 7. A cap 8 is inserted into the center hole 7.
As shown in FIG. 2, the cap 8 has a concave cross section,
An outer peripheral surface 8a is provided with an outer peripheral convex portion 8b, the outer peripheral surface is elastically fitted to the inner peripheral surface 7a of the center hole 7, and the outer peripheral convex portion is fitted and fitted into the peripheral groove 7b.
【0014】キャップの開口端の外周に沿って鍔8cが
設けられ中心穴7の開口端面7cに当接するようにされ
ている。凹部内部8dにはキャップ外周内壁8eに一辺
9aが結合し隣接辺9bが底部8fの径方向に結合する
板状のつかみ部9が設けられ、この板状のつかみ部はキ
ャップ中心部8gより外周内壁8e側に設けられてい
る。なお、キャップ材料はゴムやプラスチック等の弾性
を有する弾性材料を用いる。より好ましくは前述した従
来のカバー等でも使用されているウレタンゴム等が対候
性、寿命、強度の面で適している。また、中心穴7の直
径D=50mmの場合、キャップ全長L=14mm、鍔
8c外径D1=53mm、高さH1=2mm,凸部8b
高さh=0.5mm、凸部幅w=1.5mm、つかみ部
9の幅Wt=2mm、高さHt=10mm、長さLt=
15mmとした。A flange 8c is provided along the outer periphery of the open end of the cap, and is brought into contact with the open end face 7c of the center hole 7. Inside the concave portion 8d, there is provided a plate-like grip portion 9 in which one side 9a is connected to the inner wall 8e of the cap and the adjacent side 9b is connected in the radial direction of the bottom portion 8f. It is provided on the inner wall 8e side. Note that an elastic material having elasticity such as rubber or plastic is used as the cap material. More preferably, urethane rubber or the like, which is also used in the above-mentioned conventional cover, is suitable in terms of weatherability, life, and strength. When the diameter D of the center hole 7 is 50 mm, the overall cap length L is 14 mm, the outer diameter D1 of the flange 8c is 53 mm, the height H1 is 2 mm, and the protrusion 8b is provided.
Height h = 0.5 mm, convex part width w = 1.5 mm, width Wt of grip part 9 = 2 mm, height Ht = 10 mm, length Lt =
It was 15 mm.
【0015】かかる鉄道車両車軸用ころ軸受装置におい
ては、軸受2は外輪両側に延在する軸受シール5により
内部を飛び石等や雨水、塵埃等から保護する。又、軸端
1aは反軸端側鍔部3a、円錐ころ軸受2の内輪2a、
間座2e、内輪2a、軸端側鍔部3b、前蓋4、及び前
蓋中心穴7に嵌挿されたキャップ8により密閉され、飛
び石等や雨水、塵埃から保護される。キャップ8は周溝
7bに外周凸部8bが強固にはめ込まれており、脱落し
たり、誤って取り外すおそれがない。In the roller bearing device for a railway vehicle axle, the bearing 2 is protected from flying stones, rainwater, dust and the like by bearings 5 extending on both sides of the outer ring. In addition, the shaft end 1a has an opposite shaft end side flange portion 3a, the inner ring 2a of the tapered roller bearing 2,
The spacer 2e, the inner ring 2a, the shaft end side flange 3b, the front lid 4, and the cap 8 inserted into the front lid center hole 7 are hermetically sealed and protected from flying stones, rainwater, and dust. The cap 8 has the outer circumferential projection 8b firmly fitted in the circumferential groove 7b, so that there is no risk of falling off or being accidentally removed.
【0016】修理時等にセンタ穴1dを使用する場合
は、プライヤ等でキャップ8の板状のつかみ部9を挟持
して引っ張ることにより、容易に外すことができる。つ
かみ部9に回転方向の力を加えたり、外周の鍔部8cを
引っ張っても容易に外すことはできない。When the center hole 1d is used at the time of repair or the like, the center hole 1d can be easily removed by holding and pulling the plate-like grip portion 9 of the cap 8 with a plier or the like. Even if a force in the rotating direction is applied to the grip portion 9 or the outer peripheral flange portion 8c is pulled, it cannot be easily removed.
【0017】次に、他の実施の形態について説明する。
図3は図1の中心穴7に嵌挿されるキャップのつかみ部
をキャップ中心対称に2ヶ所配置し、一枚の板としたも
のであり、(a)は正面図、(b)は(a)のA−A線
断面図、(c)は(a)のB−B線断面図である。図2
と同様な部分については、同符号を付し説明を省略す
る。図2の場合がつかみ部9が2箇所に設けられてい
る。つかみ部とつかみ部の間10は連続して接続され、
図示のように一枚の板状部11が形成されている。Next, another embodiment will be described.
FIGS. 3A and 3B show a single plate in which two grip portions of the cap to be inserted into the center hole 7 of FIG. 1 are arranged symmetrically with respect to the center of the cap. FIG. 3A is a front view, and FIG. (A) is a sectional view taken along line AA, and (c) is a sectional view taken along line BB in (a). FIG.
The same parts as those described above are denoted by the same reference numerals and description thereof will be omitted. In the case of FIG. 2, the grip portion 9 is provided at two places. 10 is continuously connected between the grip portion and the grip portion,
As shown, a single plate-like portion 11 is formed.
【0018】かかる構成では、つかみ部9が2箇所とな
り、中心対称であり、回転バランスもよく、また、長期
間の使用、脱着の繰り返しによるつかみ部の一方が破損
しても取り外しが可能である。つかみ部の間10を接続
して中心12よりゴム等を供給すれば成形時のゴム材料
等の流れがよい。ここで特に注記すべきは、つかみ部9
は中心より外周内壁8e側であって、つかみ部の間(接
続部)10ではないことである。もし、つかみ部の間1
0の付近をプライヤ等で挟持して外そうとしても中央が
伸びるだけで容易に中心穴7よりキャップ8を外すこと
は困難であり、外周内壁側のつかみ部を挟持した場合に
較べ、数倍の力を必要とするのである。In this configuration, the grip portion 9 is provided at two places, is symmetrical about the center, has a good rotational balance, and can be removed even if one of the grip portions is damaged due to repeated use and detachment for a long period of time. . If rubber or the like is supplied from the center 12 by connecting between the grip portions 10, the flow of the rubber material or the like at the time of molding is good. It should be noted here that the grip 9
Means that it is on the side of the outer peripheral inner wall 8e from the center and not between the gripping portions (connection portion) 10. If between the grips 1
It is difficult to easily remove the cap 8 from the center hole 7 simply by extending the center even if the area around 0 is pinched by a pliers or the like, and it is several times as large as when the grip on the outer peripheral inner wall side is clamped. It needs the power of
【0019】即ち、接続部10はつかみ部9としての役
割を果たすことができないのである。 そこで、中心部
を直径5mm〜10mm程の円柱状として中央部に厚肉
部を設けプライヤ等で挟持し難くして作業者に注意を促
すようにする。この場合成形時のゴム材料の流れをより
確実にする等の効果もある。That is, the connecting portion 10 cannot serve as the grip portion 9. Therefore, the central portion is formed into a columnar shape having a diameter of about 5 mm to 10 mm, and a thick portion is provided at the central portion to make it difficult for the pliers or the like to hold the thick portion so as to call attention to an operator. In this case, there is an effect that the flow of the rubber material at the time of molding is made more reliable.
【0020】なお、つかみ部をさらに十文字に配置して
4箇所にする等してもよいが、個数を増やすとリブとし
て働きキャップ全体の変形がしにくくなり、着脱が硬く
なり、コストも高くなるので、2箇所程度がよい。ま
た、上記説明においては、図1に示すような鉄道車両車
軸用ころ軸受装置について述べたが、軸端にセンタ穴が
設けられた軸と、内輪が前記軸に固定され外輪が軸箱等
に固定された軸受と、該軸受の両端に設けられたシール
と、前記軸受と前記シールと前記軸受より延出する軸の
軸端側を覆うようにされた前蓋と、を有する鉄道車両車
軸用ころ軸受装置の種々の形態についても同様であるこ
とは言うまでもない。The grips may be further arranged in a cross shape to provide four places, but if the number is increased, the ribs function as ribs, making it difficult for the entire cap to be deformed, making attachment and detachment hard, and increasing the cost. Therefore, about two places are good. In the above description, the roller bearing device for a railway vehicle axle as shown in FIG. 1 has been described. However, a shaft having a center hole at the shaft end, an inner ring fixed to the shaft, and an outer ring mounted to an axle box or the like. For a railway vehicle axle having a fixed bearing, seals provided at both ends of the bearing, and a front lid adapted to cover the shaft end side of the bearing, the seal and a shaft extending from the bearing. It goes without saying that the same applies to various forms of the roller bearing device.
【0021】なお、中心穴7が直径D=50mmの場合
のキャップについて、種々の実験を行ったがこのときの
ウレタンゴムは、NOK株式会社製アイアンラバー80
0シリーズU801(硬さJIS A 94、100%
モジュラス130kg/cm 2、300%モジュラス2
00kg/cm2、引張強さ440kg/cm2、伸び4
80%、引裂き強さ140kg/cm、反発弾性40
%、圧縮永久歪30%80℃×70Hrs)を用いた。When the center hole 7 has a diameter D = 50 mm
Various experiments were conducted for the cap of
Urethane rubber is manufactured by NOK Iron Rubber 80
0 series U801 (hardness JIS A 94, 100%
Modulus 130 kg / cm Two, 300% modulus 2
00kg / cmTwo, Tensile strength 440kg / cmTwo, Growth 4
80%, tear strength 140kg / cm, rebound resilience 40
%, Compression set 30% 80 ° C. × 70 Hrs).
【0022】[0022]
【発明の効果】以上説明したように、本発明の鉄道車両
車軸用ころ軸受装置においては、センタ穴を有する軸端
に配設された前蓋の中心穴に、中心穴内周及び周溝に外
周凸部が嵌合し着脱可能な断面凹状の弾性材料からなる
キャップを設け、このキャップの外周内壁に一辺が結合
し隣接辺が底部径方向に結合する板状のつかみ部を設け
るようにし、中心穴からの離脱を容易にしたので、取り
付け状態では確実に嵌着され、また回転による緩みがな
く、加工コストが低く、取り外し時には作業が容易なキ
ャップ構造を有する鉄道車両車軸用ころ軸受装置を提供
するものとなった。As described above, in the roller bearing device for a railway vehicle axle according to the present invention, the center hole of the front cover provided at the shaft end having the center hole, the inner periphery of the center hole and the outer periphery of the peripheral groove are provided. A cap made of a resilient material having a concave cross section that is fitted and detachable with a convex portion is provided, and a plate-like grip portion is formed in which one side is connected to an outer peripheral inner wall of the cap and an adjacent side is connected to a bottom radial direction. Provided is a roller bearing device for a railway vehicle axle that has a cap structure that has a cap structure that is easily fitted in an attached state, has no looseness due to rotation, has a low processing cost, and is easy to operate when being removed because the detachment from a hole is facilitated. It became something to do.
【0023】板状のつかみ部はキャップ中心部より外周
内壁側に設けることにより、より容易に取り外すことが
できる。By providing the plate-like gripping part on the outer peripheral inner wall side from the center part of the cap, it can be more easily removed.
【0024】また、板状のつかみ部はキャップ中心対称
に配置した一枚の板状にして2箇所に設けたので、長期
間の使用、脱着の繰り返しによるつかみ部の破損に対応
でき、回転体としてのバランスもよく、メンテナンスの
良いものとなった。また、キャップ成形時にはゴム材料
等の流れもよく製作しやすいものとなった。Further, since the plate-like grip portion is provided in two places in the form of a single plate arranged symmetrically with respect to the center of the cap, it is possible to cope with damage to the grip portion due to long-term use and repeated attachment and detachment. The balance as well as the maintenance was good. In addition, the flow of the rubber material and the like was good at the time of cap molding, and it was easy to manufacture.
【0025】また、中央部に厚肉部を設けプライヤ等で
挟持し難くして作業者に注意を促すようにすれば、より
取扱いが容易になる等の効果を奏するものとなった。Further, if a thick portion is provided at the center to make it difficult for the pliers or the like to pinch it and to alert the operator, the effects such as easier handling can be obtained.
【図1】本発明の実施の形態を示す鉄道車両車軸用ころ
軸受装置の部分断面図である。FIG. 1 is a partial cross-sectional view of a roller bearing device for a railway vehicle axle, showing an embodiment of the present invention.
【図2】本発明のキャップの実施例であって、図1に示
すキャップの(a)は正面図、(b)は(a)のA−A
線断面図、(c)は(a)のB−B線断面図である。2 (a) is a front view of the cap shown in FIG. 1, and FIG. 2 (b) is an AA of FIG. 1 (a).
FIG. 3C is a sectional view taken along line BB of FIG.
【図3】本発明のキャップの他の実施例であって、
(a)は正面図、(b)は(a)のA−A線断面図、
(c)は(a)のB−B線断面図である。FIG. 3 is another embodiment of the cap of the present invention,
(A) is a front view, (b) is a sectional view taken along line AA of (a),
(C) is a sectional view taken along line BB of (a).
1 鉄道車両車軸 1a 軸 1b 段部 1d センタ穴 2 ころ軸受(円錐ころ軸受) 2a 内輪 2b 外輪 2c ころ(円錐ころ) 2e 間座 2f 外輪両端部 3a 反軸端側鍔部 3b 軸端側鍔部 4 前蓋 5 軸受シール 6 取付カバー 7 中心穴 7a 中心穴の内周 7b 周溝 8 キャップ 8a キャップ外周面 8b キャップ外周凸部 8d キャップ凹部内部 8e キャップ外周内壁 8f キャップ底部 8g キャップ中心部 9 つかみ部 9a つかみ部の一辺 9b つかみ部の一辺の隣接辺 10 つかみ部とつかみ部の間 11 一枚の板状部 DESCRIPTION OF SYMBOLS 1 Railway vehicle axle 1a Shaft 1b Step part 1d Center hole 2 Roller bearing (tapered roller bearing) 2a Inner ring 2b Outer ring 2c Roller (tapered roller) 2e Spacer 2f Both ends of outer ring 3a Non-shaft end side flange 3b Shaft end side flange Reference Signs List 4 Front lid 5 Bearing seal 6 Mounting cover 7 Center hole 7a Inner circumference of center hole 7b Peripheral groove 8 Cap 8a Cap outer peripheral surface 8b Cap outer peripheral convex part 8d Inside of cap concave part 8e Cap outer peripheral inner wall 8f Cap bottom part 8g Cap central part 9 Gripping part 9a One side of the gripping part 9b Adjacent side of one side of the gripping part 10 Between the gripping parts 11 One sheet-like part
Claims (4)
が前記軸に固定され外輪が軸箱等に固定された軸受と、
該軸受の両端に設けられたシールと、前記軸受と前記シ
ールと前記軸受より延出する軸の軸端側を覆うようにさ
れた前蓋と、を有する鉄道車両車軸用ころ軸受装置にお
いて、前記前蓋の中央部に前記センタ穴が露出可能な中
心穴が設けられ、該中心穴内周に周溝が設けられ、該中
心穴内周及び周溝に外周凸部が嵌合し着脱可能にされた
断面凹状の弾性材料からなるキャップが設けられてお
り、該キャップにはキャップ外周内壁に一辺が結合し隣
接辺が底部径方向に結合する板状のつかみ部が設けられ
ていることを特徴とする鉄道車両車軸用ころ軸受装置。A shaft having a center hole at the shaft end; a bearing having an inner ring fixed to the shaft and an outer ring fixed to a shaft box or the like;
A roller bearing device for a railway vehicle axle, comprising: a seal provided at both ends of the bearing; and a front lid configured to cover a shaft end side of the bearing, the seal, and a shaft extending from the bearing. A center hole where the center hole was exposed was provided at the center of the front lid, a peripheral groove was provided on the inner periphery of the center hole, and an outer peripheral convex portion was fitted on the inner periphery and the peripheral groove of the front hole to be detachable. A cap made of an elastic material having a concave cross section is provided, and the cap is provided with a plate-like grip portion having one side connected to the inner wall of the cap outer circumference and the adjacent side connected to the bottom radial direction. Roller bearing device for railway vehicle axles.
り外周内壁側に設けられていることを特徴とする請求項
1記載の鉄道車両車軸用ころ軸受装置。2. The roller bearing device for an axle of a railway vehicle according to claim 1, wherein the plate-shaped grip portion is provided on an outer peripheral inner wall side from a center portion of the cap.
して対称に配置され一枚の板状にされていることを特徴
とする請求項2記載の鉄道車両車軸用ころ軸受装置。3. The roller bearing device for an axle of a railway vehicle according to claim 2, wherein said plate-shaped grip portion is arranged symmetrically with respect to the center of the cap and is formed in one plate shape.
み部は、中央部に厚肉部が設けられていることを特徴と
する請求項3記載の鉄道車両車軸用ころ軸受装置。4. The roller bearing device for a railway vehicle axle according to claim 3, wherein the single plate-shaped grip portion according to claim 3 is provided with a thick portion at a central portion. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10237892A JP2000065078A (en) | 1998-08-25 | 1998-08-25 | Rolling bearing for rolling stock axle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10237892A JP2000065078A (en) | 1998-08-25 | 1998-08-25 | Rolling bearing for rolling stock axle |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000065078A true JP2000065078A (en) | 2000-03-03 |
Family
ID=17021977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10237892A Pending JP2000065078A (en) | 1998-08-25 | 1998-08-25 | Rolling bearing for rolling stock axle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2000065078A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102951170A (en) * | 2011-08-09 | 2013-03-06 | Skf公司 | Axle box for a railway vehicle |
CN104455015A (en) * | 2013-09-12 | 2015-03-25 | Skf公司 | Blocking end cap for a rolling bearing and supporting device for a railway axle equipped therewith |
DE102011004030B4 (en) | 2011-02-14 | 2019-12-12 | Schaeffler Technologies AG & Co. KG | Bearing arrangement for a rail vehicle |
WO2024040709A1 (en) * | 2022-08-25 | 2024-02-29 | 瓦房店轴承集团有限责任公司 | Bearing front sealing device having observation hole |
WO2024040719A1 (en) * | 2022-08-25 | 2024-02-29 | 瓦房店轴承集团有限责任公司 | Bearing front sealing device having observation hole |
-
1998
- 1998-08-25 JP JP10237892A patent/JP2000065078A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011004030B4 (en) | 2011-02-14 | 2019-12-12 | Schaeffler Technologies AG & Co. KG | Bearing arrangement for a rail vehicle |
CN102951170A (en) * | 2011-08-09 | 2013-03-06 | Skf公司 | Axle box for a railway vehicle |
CN104455015A (en) * | 2013-09-12 | 2015-03-25 | Skf公司 | Blocking end cap for a rolling bearing and supporting device for a railway axle equipped therewith |
CN104455015B (en) * | 2013-09-12 | 2018-12-14 | Skf公司 | The supporting arrangement of the blocking end cap and the railway axis equipped with the lid of rolling bearing |
WO2024040709A1 (en) * | 2022-08-25 | 2024-02-29 | 瓦房店轴承集团有限责任公司 | Bearing front sealing device having observation hole |
WO2024040719A1 (en) * | 2022-08-25 | 2024-02-29 | 瓦房店轴承集团有限责任公司 | Bearing front sealing device having observation hole |
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