JPH0575519U - Thrust color of rotating shaft - Google Patents
Thrust color of rotating shaftInfo
- Publication number
- JPH0575519U JPH0575519U JP022216U JP2221692U JPH0575519U JP H0575519 U JPH0575519 U JP H0575519U JP 022216 U JP022216 U JP 022216U JP 2221692 U JP2221692 U JP 2221692U JP H0575519 U JPH0575519 U JP H0575519U
- Authority
- JP
- Japan
- Prior art keywords
- thrust
- thrust collar
- bearing
- sliding surface
- load
- 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- Withdrawn
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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1075—Wedges, e.g. ramps or lobes, for generating pressure
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/047—Sliding-contact bearings for exclusively rotary movement for axial load only with fixed wedges to generate hydrodynamic pressure
-
- 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
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
- F16C2360/24—Turbochargers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
(57)【要約】
【目的】 スラストカラーの負荷側摺動面において潤滑
条件の悪い内径側でも焼付や摩耗が多く発生することの
ない回転軸のスラストカラーを提供するにある。
【構成】 スラスト軸受と接触摺動する負荷側摺動面
が、小径部に移るにつれて前記スラスト軸受との隙間が
多くなるように、テーパ状に形成されたことを特徴とす
る高速回転軸のスラストカラー。
(57) [Abstract] [Purpose] To provide a thrust collar for a rotating shaft that does not cause much seizure or wear even on the inner diameter side where the lubrication conditions are bad on the load side sliding surface of the thrust collar. [Structure] A load-side sliding surface that slides in contact with a thrust bearing is formed in a tapered shape so that the clearance between the load bearing sliding surface and the thrust bearing increases as it moves to a smaller diameter portion. Color.
Description
【０００１】[0001]
本考案は過給機用回転軸のスラストカラーに関する。 The present invention relates to a thrust collar of a rotary shaft for a supercharger.
【０００２】[0002]
図３に従来形のエンジン用過給機の概念図を示す。１はスラストカラーで排気 タービン過給機軸に設けられ、そのスラスト面は硬化処理がほどこされている。 ２はスラスト軸受で軸受金はホワイトメタルが多く用いられている。 図４は前記スラスト軸受２の拡大正面図である。７はテーパランド部、８は油 溝、９は給油穴で前記油溝８に開口し、エンジンシステム油より分岐して供給す る。図５は図４のＢ−Ｂ断面展開図である。 FIG. 3 shows a conceptual diagram of a conventional engine supercharger. Reference numeral 1 is a thrust collar provided on the shaft of the exhaust turbine supercharger, and its thrust surface is hardened. Reference numeral 2 is a thrust bearing, and white metal is often used as the bearing metal. FIG. 4 is an enlarged front view of the thrust bearing 2. Reference numeral 7 is a taper land portion, 8 is an oil groove, and 9 is an oil supply hole which opens in the oil groove 8 and is branched from the engine system oil for supply. FIG. 5 is a development view of the BB cross section of FIG. 4.
【０００３】 過給機が回転すると油溝８の潤滑油は、給油圧力と、スラストカラーの回転に よる流れと、油の粘性による流れと、遠心力による流れで潤滑油が前記テーパラ ンド部のスラスト軸受２とスラストカラー１の間に流入し、その間を潤滑して過 給機用回転軸のスラスト力を受けとめる。When the supercharger rotates, the lubricating oil in the oil groove 8 flows into the taper land portion due to the oil pressure, the flow due to the rotation of the thrust collar, the flow due to the viscosity of the oil, and the flow due to the centrifugal force. It flows between the thrust bearing 2 and the thrust collar 1 and lubricates the gap to receive the thrust force of the rotary shaft for the turbocharger.
【０００４】[0004]
機関のターボ過給機のスラストカラーは（２〜３）万ｒ．ｐ．ｍで回転するた め、スラスト軸受に供給される潤滑油は、スラストカラーの小径部では不足気味 となり、温度上昇すると共に粘性が低下し遠心力により油膜は薄くなる。又油自 身にスラッジが混入しているときには油膜が薄くなり、益々潤滑条件は悪化する 。そのため、図（６〜７）のａ部に示すようにスラストカラーの内径側に強い当 りや条痕を生じ、終には焼付を生じるという欠点があった。 The thrust color of the turbocharger of the engine is (2 to 30,000) r. p. Since it rotates at m, the lubricating oil supplied to the thrust bearing will tend to be insufficient in the small diameter portion of the thrust collar, the viscosity will decrease as the temperature rises, and the oil film will thin due to centrifugal force. Also, when sludge is mixed in the oil itself, the oil film becomes thinner and the lubrication conditions worsen. Therefore, as shown in a part of FIGS. (6 to 7), there is a drawback that strong contact or streak is generated on the inner diameter side of the thrust collar, and finally seizure occurs.
【０００５】 本考案の目的は前記従来装置の問題点を解消し、スラストカラー負荷側摺動面 の半径方向に於る一様でない熱変形が防止でき、特に潤滑条件のわるいその小径 側でも焼付くことなく、又該内径側で油膜が薄くなって摩耗が多く発生すること のない過給機のスラストカラーを提供するにある。The object of the present invention is to solve the problems of the above-mentioned conventional device, prevent uneven thermal deformation in the radial direction of the thrust collar load side sliding surface, and especially to burn even on the small diameter side where lubrication conditions are poor. It is to provide a thrust collar for a supercharger that does not stick and does not cause much wear due to a thin oil film on the inner diameter side.
【０００６】[0006]
本考案の回転軸のスラストカラーは、スラスト軸受接触摺動する負荷側摺動面 が、小径部側に移るにつれて、前記スラスト軸受との隙間が広くなるようにテー パ状に形成されたことを特徴としている。 The thrust collar of the rotating shaft of the present invention is formed in a taper shape so that the load side sliding surface that slides in contact with the thrust bearing becomes wider as it moves to the smaller diameter side. It has a feature.
【０００７】[0007]
負荷時回転が上昇すると共に図１において、左側より右側に推力が発生すると 右側の油膜厚さが減少し、右側の表面温度Ｔ2 は左側の表面温度Ｔ3 に比べ高く なる。この時左右の温度差によりスラストカラーは熱変形を生じ、終には焼付を 生じることもあったが、本考案では前記のようにスラストカラー面が前記のとお り構成されているので、スラスト作動時スラストカラーと軸受との油膜厚さが一 様となり安定作動が可能となるので、高速スラスト軸受の寿命を大幅に延長させ ることができる。As the rotation under load increases and the thrust is generated from the left side to the right side in FIG. 1, the oil film thickness on the right side decreases, and the surface temperature T 2 on the right side becomes higher than the surface temperature T 3 on the left side. At this time, the thrust collar may be thermally deformed due to the temperature difference between the left and right sides, and eventually seizure may occur.However, in the present invention, since the thrust collar surface is configured as described above, thrust operation is performed. When the thrust collar and the bearing have the same oil film thickness and stable operation is possible, the life of the high-speed thrust bearing can be greatly extended.
【０００８】[0008]
以下図１〜２図を参照し本考案の一実施例について説明する。 図１は実施例の要部断面図、図２は実施例の作用説明図で同（ａ）図は冷態時 つまり回転作動していない時のスラストカラーと軸受との関係拡大図、同（ｂ） 図はスラストカラー１が高速回転してスラストカラーの左右に温度差が生じた時 即ち回転作動時のスラストカラーと軸受との関係拡大図である。 本考案の要点は図１に示すように、スラストカラー２の負荷側摺動面が小径部 側に移るにつれて軸受との隙間が大きくなるようにテーパ状（θ）に加工されて いることである。 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view of a main part of the embodiment, and FIG. 2 is an explanatory view of the operation of the embodiment. b) The drawing is an enlarged view of the relationship between the thrust collar and the bearing when the thrust collar 1 rotates at a high speed and a temperature difference is generated between the right and left sides of the thrust collar, that is, during the rotational operation. The main point of the present invention is that, as shown in FIG. 1, the thrust collar 2 is tapered (θ) so that the clearance between the load side sliding surface and the bearing becomes larger as it moves to the smaller diameter side. .
【０００９】 次に前記実施例の作用について説明する。 スラストカラーが無負荷状態では両スラスト軸受（左側の反負荷側は図示しな い）の中央部でスラストカラーが回転するため何ら問題はなく、左右のスラスト カラーの表面温度Ｔ1 は同じである。 次にスラストカラー２の回転が上昇するにつれて、左側より右側へスラスト力 （負荷）が発生する為、図２（ｂ）のように右側の油膜厚さは減少し、表面温度 Ｔ2 は左側の表面温度Ｔ3 より高くなり、この左右の温度差によりスラストカラ ー２は熱変形を生じる。Next, the operation of the above embodiment will be described. When the thrust collar is unloaded, there is no problem because the thrust collar rotates in the center of both thrust bearings (the left anti-load side is not shown), and the surface temperatures T 1 of the left and right thrust collars are the same. .. Then as the rotation of the thrust collar 2 is raised, the thrust force from left to right order (load) occurs, decreases right oil film thickness as shown in FIG. 2 (b), the surface temperature T 2 is left The temperature becomes higher than the surface temperature T 3 , and the temperature difference between the left and right causes thermal deformation of the thrust colorr 2.
【００１０】 従来例ではこの熱変形により小径側の油膜が遠心力により薄くなる為、温度上 昇がさらに加速し、油膜厚さは減少する。これを繰返して該部に終には焼付を発 生する。ところが本考案のスラストカラーのように負荷摺動面を前記のようにテ ーパ付としておけば、作動時にスラストカラーと軸受の油膜厚さが一様となり安 定作動が可能となり、かつ潤滑条件が悪化しても内外周でほぼ一様の油膜厚さが 維持され、本来のスラスト軸受作動が保持されるため、その寿命の延長が可能と なる。In the conventional example, the oil film on the small diameter side is thinned by centrifugal force due to this thermal deformation, so that the temperature rise is further accelerated and the oil film thickness is reduced. By repeating this, seizure finally occurs in the part. However, if the load sliding surface is provided with a taper as described above, like the thrust collar of the present invention, the oil film thickness of the thrust collar and the bearing becomes uniform during operation, and stable operation is possible, and the lubrication condition Even if the oil pressure deteriorates, a substantially uniform oil film thickness is maintained on the inner and outer circumferences, and the original thrust bearing operation is maintained, so that the service life can be extended.
【００１１】[0011]
本考案に係るスラストカラーは負荷側摺動面が円板状中心に向って軸受との隙 間が厚くなるようにテーパ加工が施されているので、回転作動時のスラストカラ ーの左右温度差による熱変形が生じても、負荷側スラストカラーと軸受との油膜 厚さを一様に保つことができる。従って、従来潤滑条件の悪かった内側部の焼付 を防止でき、該部の偏摩耗にもたえる回転軸のスラストカラーを実現できる。 The thrust collar according to the present invention is tapered so that the load-side sliding surface faces the disk-shaped center and has a large gap with the bearing. Even if thermal deformation occurs, the oil film thickness of the load side thrust collar and the bearing can be kept uniform. Therefore, it is possible to prevent seizure of the inner portion, which has conventionally been badly lubricated, and to realize the thrust collar of the rotating shaft which is resistant to uneven wear of the inner portion.
【図１】本考案に係る実施例の要部断面図FIG. 1 is a sectional view of an essential part of an embodiment according to the present invention.
【図２】同実施例の作用説明図で（ａ）スラストカラー
軸受の冷態時拡大図 （ｂ）スラストカラー軸受の回転作動時拡大図FIG. 2 (a) is an enlarged view of the thrust collar bearing in a cold state, and FIG. 2 (b) is an enlarged view of the thrust collar bearing in rotational operation.
【図３】エンジン過給機の断面図FIG. 3 is a sectional view of the engine supercharger.
【図４】従来例のスラスト軸受の正面図FIG. 4 is a front view of a conventional thrust bearing.
【図５】図４のＢ−Ｂ断面の展開図5 is a development view of the BB cross section of FIG. 4. FIG.
【図６】従来例のスラストカラーの欠点説明図FIG. 6 is a diagram for explaining the defects of the conventional thrust collar.
【図７】図６に示すスラストカラーの負荷側正面図FIG. 7 is a front view on the load side of the thrust collar shown in FIG.
１…スラストカラー、２…スラスト軸受、３…テーパ加
工部（負荷側）、８…油溝、９…給油穴、Ｔ1 ，Ｔ2 ，
Ｔ3 …スラストカラー摺動面温度。1 ... thrust collar, 2 ... thrust bearing, 3 ... tapered portion (load side), 8 ... oil grooves, 9 ... oil supply hole, T 1, T 2,
T 3 ... thrust collar sliding surface temperature.
Claims (1)
ストカラーの負荷側摺動面が小径部に移るにつれて前記
スラスト軸受との隙間が多くなるようにテーパ状に形成
されたことを特徴とする回転軸のスラストカラー。1. A taper is formed so that the load side sliding surface of the thrust collar that slides in contact with the thrust bearing (2) moves toward a smaller diameter portion so that the clearance between the thrust bearing and the thrust bearing increases. Thrust color of rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP022216U JPH0575519U (en) | 1992-03-16 | 1992-03-16 | Thrust color of rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP022216U JPH0575519U (en) | 1992-03-16 | 1992-03-16 | Thrust color of rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0575519U true JPH0575519U (en) | 1993-10-15 |
Family
ID=12076611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP022216U Withdrawn JPH0575519U (en) | 1992-03-16 | 1992-03-16 | Thrust color of rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0575519U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106567A (en) * | 2000-10-02 | 2002-04-10 | Nidec Copal Electronics Corp | Hydrodynamic air bearing type optical deflector |
| CN101333944A (en) * | 2007-06-28 | 2008-12-31 | 林德股份公司 | Expansion turbine |
| WO2013099600A1 (en) * | 2011-12-27 | 2013-07-04 | 三菱重工業株式会社 | Thrust bearing device for supercharger |
| EP2773877A1 (en) * | 2011-11-03 | 2014-09-10 | ABB Turbo Systems AG | Hydrodynamic axial bearing |
| WO2019217265A1 (en) * | 2018-05-07 | 2019-11-14 | Borgwarner Inc. | Turbocharger for an internal combustion engine |
| US11841028B2 (en) | 2019-12-04 | 2023-12-12 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Thrust bearing device and turbocharger |
-
1992
- 1992-03-16 JP JP022216U patent/JPH0575519U/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106567A (en) * | 2000-10-02 | 2002-04-10 | Nidec Copal Electronics Corp | Hydrodynamic air bearing type optical deflector |
| JP4514931B2 (en) * | 2000-10-02 | 2010-07-28 | 日本電産コパル電子株式会社 | Dynamic pressure air bearing type optical deflector |
| CN101333944A (en) * | 2007-06-28 | 2008-12-31 | 林德股份公司 | Expansion turbine |
| JP2009008090A (en) * | 2007-06-28 | 2009-01-15 | Linde Ag | Expansion turbine |
| EP2773877A1 (en) * | 2011-11-03 | 2014-09-10 | ABB Turbo Systems AG | Hydrodynamic axial bearing |
| JP5524427B2 (en) * | 2011-12-27 | 2014-06-18 | 三菱重工業株式会社 | Thrust bearing device for turbocharger |
| CN103842667A (en) * | 2011-12-27 | 2014-06-04 | 三菱重工业株式会社 | Thrust bearing device for supercharger |
| WO2013099600A1 (en) * | 2011-12-27 | 2013-07-04 | 三菱重工業株式会社 | Thrust bearing device for supercharger |
| US9169865B2 (en) | 2011-12-27 | 2015-10-27 | Mitsubishi Heavy Industries, Ltd. | Thrust bearing device for supercharger |
| EP2799731A4 (en) * | 2011-12-27 | 2016-04-13 | Mitsubishi Heavy Ind Ltd | Thrust bearing device for supercharger |
| WO2019217265A1 (en) * | 2018-05-07 | 2019-11-14 | Borgwarner Inc. | Turbocharger for an internal combustion engine |
| CN110454430A (en) * | 2018-05-07 | 2019-11-15 | 博格华纳公司 | Internal combustion engine turbocharger |
| US11473447B2 (en) | 2018-05-07 | 2022-10-18 | Borgwarner Inc. | Turbocharger for an internal combustion engine |
| US11841028B2 (en) | 2019-12-04 | 2023-12-12 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Thrust bearing device and turbocharger |
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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: 19960606 |