JPH09178085A - Oil air lubrication construction - Google Patents
Oil air lubrication constructionInfo
- Publication number
- JPH09178085A JPH09178085A JP33901495A JP33901495A JPH09178085A JP H09178085 A JPH09178085 A JP H09178085A JP 33901495 A JP33901495 A JP 33901495A JP 33901495 A JP33901495 A JP 33901495A JP H09178085 A JPH09178085 A JP H09178085A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- air
- outer ring
- passages
- passage
- 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
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、軸に外嵌された内
輪とハウジングに内嵌されたつば付き外輪との間にころ
を転動自在に配設して前記軸を軸方向に支持するスラス
ト軸受をオイルエアで潤滑する構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supports rollers by rotatably disposing rollers between an inner ring fitted on a shaft and an outer ring with a flange fitted on a housing. The present invention relates to a structure for lubricating a thrust bearing with oil air.
【０００２】[0002]
【従来の技術】従来のこの種のオイルエア潤滑構造とし
ては、例えば、西ドイツ特許ＤＥ２８４４９９５号、特
開平５−３４０４９９号公報及び実開平４−５２６１８
号公報に記載のものが知られている。これらは、例えば
圧延機用ロールの軸端を支持する複数の転がり軸受を潤
滑する場合に、１本のオイルエア供給路に供給されたオ
イルエア（圧縮空気と油）を該供給路に介在された分配
器によって分配して各転がり軸受に供給するようにした
ものである。2. Description of the Related Art As a conventional oil-air lubrication structure of this type, for example, West German Patent DE 2844995, JP-A-5-340499 and Japanese Utility Model Application Laid-Open No. 4-52618.
The one described in Japanese Patent Application Laid-Open Publication No. H10-260, 1993 is known. For example, when lubricating a plurality of rolling bearings that support the shaft end of a rolling mill roll, oil air (compressed air and oil) supplied to one oil air supply passage is distributed through the supply passage. It is distributed by a container and supplied to each rolling bearing.
【０００３】[0003]
【発明が解決しようとする課題】ところで、オイルエア
潤滑は、エア圧によりオイルを給油通路の壁に沿って潤
滑対称物まで搬送するもので、ジェット給油等による潤
滑に比べて、設備の簡略化が図れると共に、外部への油
漏れを心配しなくて済み、しかも使用油量を極端に少な
くすることができるという利点を有する反面、使用油量
が少ないことから特につば付きスラスト軸受の潤滑にお
いては外輪つばの周方向全周に均等にオイルを供給する
必要がある。By the way, in the oil-air lubrication, oil is conveyed by air pressure along the wall of the oil supply passage to a lubrication symmetrical object. Therefore, the equipment can be simplified as compared with the lubrication by jet oil supply. While it has the advantages of not only worrying about oil leakage to the outside and also being able to extremely reduce the amount of oil used, the amount of oil used is also small, so the outer ring is especially used for lubrication of the thrust bearing with a collar. It is necessary to supply oil evenly around the entire circumference of the brim.
【０００４】しかしながら、上記従来の各オイルエア潤
滑構造においては、いずれも、分配器によって分配され
たオイルエアを各転がり軸受に供給するだけの構造であ
るため、スラスト軸受の外輪つばの周方向全周に均等に
オイルを供給することができず、該スラスト軸受の十分
な潤滑を行うことができないという不都合がある。本発
明はかかる不都合を解消するためになされたものであ
り、スラスト軸受の外輪つばの周方向全周に均等にオイ
ルを供給することができるようにして、該スラスト軸受
の十分な潤滑を行うことができるオイルエア潤滑構造を
提供することを目的とする。However, in each of the above-mentioned conventional oil-air lubrication structures, all of them have a structure in which the oil-air distributed by the distributor is simply supplied to each rolling bearing, so that the outer circumference of the outer ring flange of the thrust bearing is circumferentially surrounded. There is an inconvenience that the oil cannot be supplied evenly and the thrust bearing cannot be sufficiently lubricated. The present invention has been made in order to eliminate such inconvenience, and it is possible to supply oil uniformly to the entire circumference of the outer ring flange of the thrust bearing, and to perform sufficient lubrication of the thrust bearing. An object of the present invention is to provide an oil-air lubrication structure capable of achieving the above.
【０００５】[0005]
【課題を解決するための手段】かかる目的を達成するた
めに、本発明に係るオイルエア潤滑構造は、軸に外嵌さ
れた内輪とハウジングに内嵌されたつば付き外輪との間
にころを転動自在に配設して前記軸を軸方向に支持する
スラスト軸受をオイルエアで潤滑する構造であって、前
記ハウジングに穿設されたオイルエア供給路と、前記外
輪の外径面と該外径面を臨むハウジングの内径面との間
に軸方向に互いに離間して複数配置され、前記外輪の周
方向に沿って延設されたオイルエア流通路と、該複数の
オイルエア流通路と前記オイルエア供給路との間に穿設
され、該オイルエア供給路に供給されたオイルエアを前
記複数のオイルエア流通路にそれぞれ略等量となるよう
に分配供給するオイルエア分配路と、前記外輪に前記複
数のオイルエア流通路毎に穿設され、該オイルエア流通
路に一端部が連通すると共に前記外輪のつばの逃げ部に
他端部が開口して前記複数のオイルエア流通路に分配供
給されたオイルエアを前記逃げ部に個別に導く複数のオ
イルエア流出路とを備え、該複数のオイルエア流出路を
前記外輪の周方向に位相をずらして配置したことを特徴
とする。In order to achieve such an object, an oil-air lubrication structure according to the present invention rolls a roller between an inner ring externally fitted on a shaft and a collared outer ring internally fitted on a housing. A structure in which a thrust bearing movably arranged to support the shaft in the axial direction is lubricated with oil air, and an oil air supply passage formed in the housing, an outer diameter surface of the outer ring, and the outer diameter surface are provided. A plurality of oil-air flow passages that are axially separated from each other and that extend along the circumferential direction of the outer ring, and the plurality of oil-air flow passages and the oil-air supply passage. An oil-air distribution passage that is provided between the oil-air supply passage and the plurality of oil-air supply passages and distributes the oil-air supplied to the oil-air supply passage to each of the plurality of oil-air flow passages in an approximately equal amount. Each of the passages has one end communicating with the oil-air flow passage, and the other end of the outer ring is opened to the relief portion of the outer ring so that the oil air distributed and supplied to the plurality of oil-air passages is supplied to the relief portion. A plurality of oil-air outflow passages that are individually guided are provided, and the plurality of oil-air outflow passages are arranged with their phases shifted in the circumferential direction of the outer ring.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態の一例
を図１〜図５を参照して説明する。図１は本発明の実施
の形態の一例であるオイルエア潤滑構造を説明するため
の説明的断面図、図２は図１の部分拡大図、図３は図２
のＡ矢視図、図４はつば付き外輪の断面図、図５は図４
の右側面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is an explanatory cross-sectional view for explaining an oil-air lubrication structure which is an example of an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. 3 is FIG.
FIG. 4 is a sectional view of the outer ring with a collar, and FIG.
FIG.
【０００７】図１において符号１は圧延機用ロール２の
軸端を回動可能に支持する４列の円筒ころ軸受（ラジア
ル軸受）であり、該円筒ころ軸受１はロール２に外嵌さ
れた内輪３とチョック４に内嵌された外輪５との間に円
筒ころ６を転動自在に配設して該ロール２のラジアル荷
重を受け止めるようにされている。また、符号７は円筒
ころ軸受１の左側でロール２の軸端を回動可能に支持す
るスラスト円すいころ軸受であり、該スラスト円すいこ
ろ軸受７はロール２に外嵌された内輪８とチョック９に
内嵌された一対のつば付き外輪１０との間に円すいころ
１１を転動自在に配設して該ロール２のアキシアル荷重
を受け止めるようにされている。尚、符号１２，１３は
共に間座を示す。In FIG. 1, reference numeral 1 denotes a four-row cylindrical roller bearing (radial bearing) that rotatably supports the shaft end of a rolling mill roll 2, and the cylindrical roller bearing 1 is fitted onto the roll 2. A cylindrical roller 6 is rotatably disposed between the inner ring 3 and an outer ring 5 fitted in the chock 4 to receive the radial load of the roll 2. Reference numeral 7 denotes a thrust tapered roller bearing that rotatably supports the shaft end of the roll 2 on the left side of the cylindrical roller bearing 1, and the thrust tapered roller bearing 7 has an inner ring 8 and a chock 9 fitted onto the roll 2. Tapered rollers 11 are rotatably arranged between the pair of outer rings 10 with flanges fitted inside and are adapted to receive the axial load of the roll 2. Note that reference numerals 12 and 13 both indicate spacers.
【０００８】円筒ころ軸受１が組み込まれたチョック４
とスラスト円すいころ軸受７が組み込まれたチョック９
とはボルト等によって一体に結合されており、チョック
４にはオイルエアが供給されるオイルエア供給路１４が
軸方向に沿って穿設されている。オイルエア供給路１４
からは径方向内方に延びる４つの分岐路１５ａ〜１５ｄ
がオイルエア供給路１４の軸方向に穿設され、また、分
岐路１５ａより上流側のオイルエア供給路１４からは径
方向外方に延びた後、軸方向に延びて外部に開口する分
岐路１５ｅが穿設されている。Chock 4 incorporating the cylindrical roller bearing 1
And chock 9 with thrust tapered roller bearing 7 incorporated
Are integrally connected by bolts or the like, and the chock 4 is provided with an oil-air supply passage 14 for supplying oil-air along the axial direction. Oil air supply passage 14
From the four branch paths 15a to 15d extending inward in the radial direction.
Is pierced in the axial direction of the oil-air supply passage 14, and a branch passage 15e that extends radially outward from the oil-air supply passage 14 upstream of the branch passage 15a and then extends in the axial direction and opens to the outside is formed. Has been drilled.
【０００９】オイルエア供給路１４の各分岐路１５ａ〜
１５ｃ，１５ｅに対応する位置にはそれぞれカートリッ
ジ型分配器１６ａ〜１６ｃ，１６ｅが配設されており、
従って、オイルエア供給路１４に供給されたオイルエア
は、まず、分配器１６ｅによって分配されて分岐路１５
ｅに流入した後、該分岐路１５ｅの開口部１７に一端が
接続された連結管１８に導かれる。分配器１６ｅを通過
したオイルエアは、分配器１６ａ〜１６ｃによって分配
されてそれぞれ分岐路１５ａ〜１５ｃに流入し、その
後、円筒ころ軸受１の互いに隣り合う円筒ころ６間に供
給され、これにより円筒ころ軸受１のオイルエア潤滑が
行われる。分配器１６ｃを通過したオイルエアは分岐路
１５ｄに流入し、その後、円筒ころ軸受１の右側に配設
されたオイルシールリップ部１９まで導かれて該リップ
部１９に供給され、これにより該リップ部１９の潤滑が
行われる。Each branch passage 15a of the oil-air supply passage 14
Cartridge type distributors 16a to 16c and 16e are provided at positions corresponding to 15c and 15e, respectively.
Therefore, the oil-air supplied to the oil-air supply passage 14 is first distributed by the distributor 16e to be divided into the branch passage 15
After flowing into e, it is guided to a connecting pipe 18 of which one end is connected to the opening 17 of the branch passage 15e. The oil air that has passed through the distributor 16e is distributed by the distributors 16a to 16c and flows into the branch passages 15a to 15c, respectively, and is then supplied between the cylindrical rollers 6 of the cylindrical roller bearing 1 which are adjacent to each other, whereby the cylindrical rollers Oil-air lubrication of the bearing 1 is performed. The oil air that has passed through the distributor 16c flows into the branch passage 15d, is then guided to the oil seal lip portion 19 disposed on the right side of the cylindrical roller bearing 1, and is supplied to the lip portion 19, whereby the lip portion 19d is supplied. 19 lubrications are performed.
【００１０】スラスト円すいころ軸受７が組み込まれた
チョック９には、上述した連結管１８を介してオイルエ
アが供給されるオイルエア供給路２０が穿設されてい
る。オイルエア供給路２０は、図２に示すように、チョ
ック９の壁部内を軸方向に沿って延びるメイン流路２０
ａを備えており、該メイン流通路２０ａからは径方向外
方に延びてチョック９の外周面に開口する流入路２０ｂ
が穿設されている。流入路２０ｂの開口部には連結管１
８の他端が接続されており、これによりオイルエア供給
路２０にオイルエアが供給される。流入路２０ｂより下
流側のメイン流通路２０ａからは径方向内方に延びる分
岐路２０ｃ，２０ｄがメイン流通路２０ａの軸方向に互
いに離間して穿設されており、分岐路２０ｃ，２０ｄの
各先端はそれぞれ一対のつば付き外輪１０の外径面を指
向している。The chock 9 in which the thrust tapered roller bearing 7 is incorporated is provided with an oil / air supply passage 20 through which the oil / air is supplied through the above-mentioned connecting pipe 18. As shown in FIG. 2, the oil-air supply passage 20 has a main passage 20 extending axially in the wall portion of the chock 9.
an inflow passage 20b which is provided with a and which extends radially outward from the main flow passage 20a and opens to the outer peripheral surface of the chock 9.
Are drilled. The connecting pipe 1 is provided at the opening of the inflow passage 20b.
The other end of 8 is connected, whereby oil air is supplied to the oil air supply passage 20. Branch passages 20c and 20d that extend radially inward from the main flow passage 20a on the downstream side of the inflow passage 20b are provided so as to be spaced apart from each other in the axial direction of the main flow passage 20a. Each of the tips is directed toward the outer diameter surface of the pair of collared outer races 10.
【００１１】また、メイン流通路２０ａの分岐路２０ｃ
に対応する位置にはカートリッジ型分配器２１が配設さ
れており、従って、流入路２０ｂからメイン流通路２０
ａに流入するオイルエアは分配器２１によって分配され
て分岐路２０ｃに導かれ、分配器２１を通過したオイル
エアはメイン流通路２０ａを下流側に向けて流れた後、
分岐路２０ｄに導かれる。分岐路２０ｃ，２０ｄの下流
側の各端部には、径方向内方に向けて次第に拡径してチ
ョック９の内径面に開口するテーパ穴（オイルエア分配
路）２２がそれぞれ形成されており、該テーパ穴２２の
最終端部はつば付き外輪１０の外径面を覆うようにされ
ている。The branch passage 20c of the main flow passage 20a
The cartridge type distributor 21 is disposed at the position corresponding to the position of the main flow passage 20.
The oil air flowing into a is distributed by the distributor 21 and guided to the branch passage 20c, and the oil air passing through the distributor 21 flows through the main flow passage 20a toward the downstream side,
It is led to the branch path 20d. Tapered holes (oil air distribution passages) 22 are formed at the downstream end portions of the branch passages 20c and 20d, respectively, which gradually expand inward in the radial direction and open to the inner diameter surface of the chock 9. The final end of the tapered hole 22 covers the outer diameter surface of the outer ring 10 with a collar.
【００１２】つば付き外輪１０の外径面には、軸方向に
互いに離間配置された３本の凹溝（オイルエア流通路）
２３ａ，２３ｂ，２３ｃが周方向全周に沿って形成され
ている。図３に示すように、凹溝２３ａから凹溝２３ｃ
までの寸法Ｓはテーパ穴２２の最終端の穴径と同一とさ
れて、該最終端が３本の凹溝２３ａ，２３ｂ，２３ｃを
覆うようにされている。ここで、３本の凹溝２３ａ，２
３ｂ，２３ｃを臨むテーパ穴２２の最終端の周縁部２２
ａの長さは、各凹溝２３ａ，２３ｂ，２３ｃで略同じ長
さになるようにしている。つまり、Ｌ1 （凹溝２３ａを
臨む周縁部２２ａの長さ）＝２Ｌ2 （凹溝２３ｂを臨む
周縁部２２ａの長さ）＝Ｌ3 （凹溝２３ｃを臨む周縁部
２２ａの長さ）となるように各凹溝２３ａ，２３ｂ，２
３ｃの幅を決めている。これにより、エア圧によってテ
ーパ穴２２の内径面に沿って所定の油膜厚さを形成しな
がら搬送されるオイルを各凹溝２３ａ，２３ｂ，２３ｃ
に等量に分配供給することができる。凹溝２３ａ，２３
ｂ，２３ｃの両側には、オイルエアの漏れを防止するＯ
リング２４が設けられている。On the outer diameter surface of the outer ring 10 with a collar, three recessed grooves (oil air flow passages) axially spaced from each other are provided.
23a, 23b, 23c are formed along the entire circumference in the circumferential direction. As shown in FIG. 3, the groove 23a to the groove 23c
The dimension S up to is the same as the hole diameter of the final end of the tapered hole 22, and the final end covers the three concave grooves 23a, 23b, 23c. Here, the three concave grooves 23a, 2
The peripheral edge portion 22 of the final end of the tapered hole 22 facing 3b and 23c
The length of a is set to be substantially the same in each of the concave grooves 23a, 23b, 23c. That is, L 1 (the length of the peripheral edge portion 22a facing the concave groove 23a) = 2L 2 (the length of the peripheral edge portion 22a facing the concave groove 23b) = L 3 (the length of the peripheral edge portion 22a facing the concave groove 23c) Each concave groove 23a, 23b, 2
The width of 3c is decided. As a result, the oil conveyed while forming a predetermined oil film thickness along the inner diameter surface of the taper hole 22 by the air pressure is used to form the concave grooves 23a, 23b, 23c.
Can be distributed and supplied in equal amounts. Groove 23a, 23
O on both sides of b and 23c to prevent oil air leakage
A ring 24 is provided.
【００１３】各凹溝２３ａ，２３ｂ，２３ｃの底部に
は、オイルエア流出路２５ａ，２５ｂ，２５ｃの各一端
がそれぞれ連通している。オイルエア供給路２５ａ，２
５ｂ，２５ｃは、図２及び図４に示すように、つば付き
外輪１０内を径方向内方に延びた後、９０°屈曲して軸
方向に沿って延びて各他端が外輪つば２６の逃げ部２７
に開口している。これにより、各凹溝２３ａ，２３ｂ，
２３ｃに分配供給されたオイルエアを逃げ部２７に個別
に導くようにされている。One end of each of the oil air outflow passages 25a, 25b, 25c communicates with the bottom of each recess 23a, 23b, 23c. Oil air supply paths 25a, 2
As shown in FIGS. 2 and 4, the reference numerals 5b and 25c extend radially inward in the collared outer ring 10 and are then bent at 90 ° to extend in the axial direction so that the other ends of the outer ring collar 26 are Escape 27
It is open to. As a result, the concave grooves 23a, 23b,
The oil air distributed and supplied to 23c is individually guided to the escape portion 27.
【００１４】ここで、この実施の形態では、図５に示す
ように、オイルエア流出路２５ａ，２５ｂ，２５ｃをそ
れぞれつば付外輪１０の周方向に９０°ピッチで４箇所
ずつ合計１２箇所設け、且つ、オイルエア流出路２５
ａ，２５ｂ，２５ｃをつば付外輪１０の周方向に３０°
ずつ位相をずらして配置している。これにより、オイル
エア流出路２５ａ，２５ｂ，２５ｃの各他端開口から吐
出するオイルを外輪つば面及び軌道面の周方向全周に均
等量供給することができる。Here, in this embodiment, as shown in FIG. 5, oil-air outflow passages 25a, 25b, 25c are provided at a total of 12 locations in the circumferential direction of the collared outer ring 10 at a 90 ° pitch, and a total of 4 locations. , Oil-air outflow passage 25
a, 25b, 25c 30 ° in the circumferential direction of the outer ring 10 with a collar
The phases are shifted one by one. As a result, the oil discharged from the other end openings of the oil air outflow passages 25a, 25b, 25c can be uniformly supplied to the outer circumferential surface of the outer ring and the entire circumference of the raceway in the circumferential direction.
【００１５】更に詳述すると、図６に示すように、つば
付外輪１０の外径面に凹溝２３を１本だけ形成して、該
凹溝２３に供給されたオイルエアを周方向に等間隔で設
けた複数のオイルエア流出路２５から吐出するようにし
た場合は、凹溝２３に供給されたオイルエアが重力の影
響を受けて凹溝２３内で偏在するため、複数のオイルエ
ア流出路２５から吐出するオイルの量にばらつきが生じ
て該オイルを外輪つば面及び軌道面の周方向全周に均等
量供給することができない。More specifically, as shown in FIG. 6, only one concave groove 23 is formed on the outer diameter surface of the outer ring 10 with a collar, and the oil air supplied to the concave groove 23 is evenly spaced in the circumferential direction. In the case of discharging from the plurality of oil-air outflow passages 25 provided in, the oil air supplied to the groove 23 is unevenly distributed in the groove 23 due to the influence of gravity, and therefore the oil-air outflow passage 25 is discharged. Since the amount of oil to be used varies, it is impossible to uniformly supply the oil to the entire circumference of the outer ring flange surface and the raceway surface in the circumferential direction.
【００１６】これに対し、この実施の形態では、つば付
外輪１０の外径面に３本の凹溝２３ａ，２３ｂ，２３ｃ
を形成すると共に、テーパ穴２２を介して各凹溝２３
ａ，２３ｂ，２３ｃに等量のオイルエアを分配供給し、
更に各凹溝２３ａ，２３ｂ，２３ｃに分配供給されたオ
イルエアを互いに位相をずらして周方向に等間隔で設け
られた複数のオイルエア流出路２５ａ，２５ｂ，２５ｃ
から吐出するようにしているので、上述したように各オ
イルエア流出路２５ａ，２５ｂ，２５ｃから吐出するオ
イルを外輪つば面及び軌道面の周方向全周に均等量供給
することができ、この結果、スラスト円すいころ軸受８
の十分な潤滑が可能になって該軸受８の焼き付きやかじ
り等のトラブルを解消することができる。On the other hand, in this embodiment, three concave grooves 23a, 23b, 23c are formed on the outer diameter surface of the outer ring 10 with a collar.
And each concave groove 23 through the tapered hole 22.
a, 23b and 23c are equally supplied with oil air,
Further, a plurality of oil air outflow passages 25a, 25b, 25c are provided at equal intervals in the circumferential direction by shifting the phases of the oil air distributed and supplied to the respective concave grooves 23a, 23b, 23c.
As described above, the oil discharged from each of the oil-air outflow passages 25a, 25b, 25c can be uniformly supplied to the outer circumferential surface of the outer ring and the entire circumference of the raceway in the circumferential direction. Thrust tapered roller bearing 8
As a result, sufficient lubrication can be achieved, and troubles such as seizure and galling of the bearing 8 can be eliminated.
【００１７】尚、上記実施の形態では、凹溝２３ａから
凹溝２３ｃまでの寸法Ｓをテーパ穴２２の最終端の穴径
と同一とした場合を例に採ったが、必ずしもこのように
する必要はなく、例えば、図３で二点鎖線で示すよう
に、テーパ穴２２の最終端の穴径を凹溝２３ａから凹溝
２３ｃまでの寸法Ｓより小径にしてもよく、この場合、
中央部の凹溝２３ｂの寸法が変更される。In the above embodiment, the case where the dimension S from the concave groove 23a to the concave groove 23c is made equal to the hole diameter of the final end of the tapered hole 22 is taken as an example, but it is not always necessary to do so. Alternatively, for example, as shown by the chain double-dashed line in FIG. 3, the hole diameter at the final end of the tapered hole 22 may be smaller than the dimension S from the groove 23a to the groove 23c. In this case,
The size of the central groove 23b is changed.
【００１８】また、上記実施の形態では、つば付外輪１
０の外径面に凹溝２３ａ，２３ｂ，２３ｃを形成してこ
れをオイルエア流通路とした場合を例に採ったが、必ず
しもこれに限定する必要はなく、例えば、図７に示すよ
うに、チョック９の内径面に凹溝２３ａ，２３ｂ，２３
ｃを形成してオイルエア流通路としてもよい。更に、上
記実施の形態では、凹溝２３ａ，２３ｂ，２３ｃを全周
溝としているが、必ずしもこのようにする必要はなく、
各オイルエア流出路２５ａ，２５ｂ，２５ｃから吐出す
るオイルを外輪つば面及び軌道面の周方向全周に均等量
供給することができる限りにおいて円弧状の周溝であっ
てもよい。Further, in the above embodiment, the outer ring 1 with a collar is used.
The case where the concave grooves 23a, 23b, 23c are formed on the outer diameter surface of 0 and used as the oil air flow passage is taken as an example, but it is not necessarily limited to this and, for example, as shown in FIG. Grooves 23a, 23b, 23 are formed on the inner surface of the chock 9.
c may be formed to serve as an oil air flow passage. Further, in the above-mentioned embodiment, the concave grooves 23a, 23b, 23c are all circumferential grooves, but it is not always necessary to do so.
An arc-shaped circumferential groove may be used as long as the oil discharged from each oil-air outflow passage 25a, 25b, 25c can be uniformly supplied to the entire circumference of the outer ring flange surface and the raceway surface in the circumferential direction.
【００１９】更に、上記実施の形態では、つば付外輪１
０の外径面に３本の凹溝を設けた場合を例に採ったが、
これに限定されず、凹溝を２本或いは４本以上設けても
よい。更に、上記実施の形態では、オイルエア供給路２
０を１本とした場合を例に採ったが、これに限定され
ず、オイルエア供給路２０を２本或いはそれ以上設けて
もよい。Further, in the above embodiment, the outer ring 1 with the collar is used.
The case where three concave grooves were provided on the outer diameter surface of 0 was taken as an example.
The present invention is not limited to this, and two or four or more concave grooves may be provided. Further, in the above embodiment, the oil / air supply passage 2
Although the case where 0 is set to one is taken as an example, the present invention is not limited to this, and two or more oil air supply passages 20 may be provided.
【００２０】[0020]
【発明の効果】上記の説明から明らかなように、本発明
では、つば付外輪の外径面に複数のオイルエア流通路を
形成すると共に、各オイルエア流通路にオイルエア分配
路を介して略等量のオイルエアを分配供給し、更に各オ
イルエア流通路に分配供給されたオイルエアを各オイル
エア流通路毎に互いに周方向に位相をずらして設けられ
た複数のオイルエア流出路から外輪つば面に吐出するよ
うにしているので、各オイルエア流出路から吐出するオ
イルを外輪つば面及び軌道面の周方向全周に均等量供給
することができ、この結果、スラスト軸受の十分な潤滑
が可能になって該軸受の焼き付きやかじり等のトラブル
を解消することができるという効果が得られる。As is apparent from the above description, in the present invention, a plurality of oil / air flow passages are formed on the outer diameter surface of the outer ring with a collar, and the oil / air flow passages are provided with substantially equal amounts of oil / air flow passages. The oil air is distributed and supplied, and the oil air distributed and supplied to each oil air flow passage is discharged to the outer ring flange surface from a plurality of oil air outflow passages provided in each oil air flow passage with their phases shifted in the circumferential direction. Therefore, the oil discharged from each oil air outflow passage can be uniformly supplied to the outer circumferential surface of the outer ring and the entire circumference of the raceway in the circumferential direction, and as a result, the thrust bearing can be sufficiently lubricated. It is possible to obtain an effect that troubles such as burn-in and galling can be eliminated.
【図１】本発明の実施の形態の一例であるオイルエア潤
滑構造を説明するための説明的断面図である。FIG. 1 is an explanatory sectional view for explaining an oil-air lubrication structure which is an example of an embodiment of the present invention.
【図２】図１の部分拡大図である。FIG. 2 is a partially enlarged view of FIG.
【図３】図２のＡ矢視図である。FIG. 3 is a view taken in the direction of arrow A in FIG. 2;
【図４】つば付き外輪の断面図である。FIG. 4 is a sectional view of an outer ring with a collar.
【図５】図４の右側面図である。FIG. 5 is a right side view of FIG.
【図６】オイルエア潤滑構造を詳述するための説明的断
面図である。FIG. 6 is an explanatory cross-sectional view for illustrating an oil-air lubrication structure in detail.
【図７】オイルエア流通路の変形例を説明するための説
明的断面図である。FIG. 7 is an explanatory cross-sectional view for explaining a modified example of the oil air flow passage.
２…ロール（軸） ８…内輪 ７…スラスト円すいころ軸受 ９…チョック（ハウジング） １０…つば付き外輪 １１…円すいころ ２０…オイルエア供給路 ２２…テーパ穴（オイルエア分配路） ２３ａ〜２３ｃ…凹溝（オイルエア流通路） ２５ａ〜２５ｃ…オイルエア流出路 ２６…外輪つば ２７…逃げ部 2 ... Roll (shaft) 8 ... Inner ring 7 ... Thrust tapered roller bearing 9 ... Chock (housing) 10 ... Outer ring with collar 11 ... Tapered roller 20 ... Oil air supply passage 22 ... Tapered hole (oil air distribution passage) 23a-23c ... Recessed groove (Oil air flow passage) 25a to 25c ... Oil air outflow passage 26 ... Outer ring collar 27 ... Escape portion
Claims (1)
されたつば付き外輪との間にころを転動自在に配設して
前記軸を軸方向に支持するスラスト軸受をオイルエアで
潤滑する構造であって、 前記ハウジングに穿設されたオイルエア供給路と、 前記外輪の外径面と該外径面を臨むハウジングの内径面
との間に軸方向に互いに離間して複数配置され、前記外
輪の周方向に沿って延設されたオイルエア流通路と、 該複数のオイルエア流通路と前記オイルエア供給路との
間に穿設され、該オイルエア供給路に供給されたオイル
エアを前記複数のオイルエア流通路にそれぞれ略等量と
なるように分配供給するオイルエア分配路と、 前記外輪に前記複数のオイルエア流通路毎に穿設され、
該オイルエア流通路に一端部が連通すると共に前記外輪
のつばの逃げ部に他端部が開口して前記複数のオイルエ
ア流通路に分配供給されたオイルエアを前記逃げ部に個
別に導く複数のオイルエア流出路とを備え、 該複数のオイルエア流出路を前記外輪の周方向に位相を
ずらして配置したことを特徴とするオイルエア潤滑構
造。1. A thrust bearing which axially supports a shaft by rotatably disposing rollers between an inner ring externally fitted to a shaft and an outer ring with a flange fitted to a housing is lubricated with oil air. And a plurality of oil-air supply passages formed in the housing, and a plurality of them are axially spaced from each other between the outer diameter surface of the outer ring and the inner diameter surface of the housing facing the outer diameter surface, The oil-air flow passages extending along the circumferential direction of the outer ring, and the oil-air flow passages bored between the oil-air flow passages and the oil-air supply passages are supplied to the oil-air supply passages. An oil-air distribution passage for supplying and distributing the same to each of the flow passages in a substantially equal amount;
A plurality of oil-air outflows, one end of which communicates with the oil-air flow passage and the other end of which opens at the escape portion of the collar of the outer ring and which individually guides the oil-air distributed and supplied to the plurality of oil-air passages to the escape portion. An oil-air lubrication structure, characterized in that the plurality of oil-air outflow passages are arranged out of phase in the circumferential direction of the outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33901495A JP3702517B2 (en) | 1995-12-26 | 1995-12-26 | Oil-air lubrication structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33901495A JP3702517B2 (en) | 1995-12-26 | 1995-12-26 | Oil-air lubrication structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09178085A true JPH09178085A (en) | 1997-07-11 |
| JP3702517B2 JP3702517B2 (en) | 2005-10-05 |
Family
ID=18323462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33901495A Expired - Lifetime JP3702517B2 (en) | 1995-12-26 | 1995-12-26 | Oil-air lubrication structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3702517B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415398C (en) * | 2006-05-23 | 2008-09-03 | 唐明 | Bearing serial roll system structure for rolling mill |
| CN105217424A (en) * | 2015-10-16 | 2016-01-06 | 浙江西尔康电梯部件有限公司 | Elevator traction machine |
| CN109296921A (en) * | 2018-11-26 | 2019-02-01 | 烟台华顺机械工程设备有限公司 | A kind of oil and gas distributor being built in bearing block |
-
1995
- 1995-12-26 JP JP33901495A patent/JP3702517B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415398C (en) * | 2006-05-23 | 2008-09-03 | 唐明 | Bearing serial roll system structure for rolling mill |
| CN105217424A (en) * | 2015-10-16 | 2016-01-06 | 浙江西尔康电梯部件有限公司 | Elevator traction machine |
| CN109296921A (en) * | 2018-11-26 | 2019-02-01 | 烟台华顺机械工程设备有限公司 | A kind of oil and gas distributor being built in bearing block |
| CN109296921B (en) * | 2018-11-26 | 2023-09-15 | 烟台华顺机械工程设备有限公司 | Oil gas distributor with built-in bearing seat |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3702517B2 (en) | 2005-10-05 |
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