JPH05118320A - Taper land type thrust bearing - Google Patents

Taper land type thrust bearing

Info

Publication number
JPH05118320A
JPH05118320A JP27406091A JP27406091A JPH05118320A JP H05118320 A JPH05118320 A JP H05118320A JP 27406091 A JP27406091 A JP 27406091A JP 27406091 A JP27406091 A JP 27406091A JP H05118320 A JPH05118320 A JP H05118320A
Authority
JP
Japan
Prior art keywords
thrust bearing
larger
bearing
thrust
taper
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Withdrawn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
JP27406091A
Other languages
Japanese (ja)
Inventor
Keiichi Shiraishi
啓一 白石
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP27406091A priority Critical patent/JPH05118320A/en
Publication of JPH05118320A publication Critical patent/JPH05118320A/en
Withdrawn legal-status Critical Current

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

PURPOSE:To minimize increase of loss of bearing motive power and lengthen a life span by grading the outside of a flat part in the radial direction rather than a specified diameter so that the larger the a diameter becomes the larger a space with a thrust collar becomes. CONSTITUTION:A plural number of oiling grooves 1 are provided on a thrust bearing 11, and the oiling grooves 1 make contact with a taper part 4, a flat part 3 and a conical surface 5. The taper part 4 between the oiling grooves 1 and the flat part 3 is graded so that a space with a thrust collar 2 becomes larger, and the outside of a circular arc concentric with the bearing jointing a specified diameter of the flat part 3 and a specified diameter on the side of the oiling groove 1 is made to be larger in the space with the thrust collar 2 toward the outer peripheral side on the gentle conical surface 5. In this way, the breadth of the flat part 3 comes to be larger as abrasion progresses and to be equal to a large diametrical thrust bearing, and accordingly, it is possible to compensate lowering of load capacity due to decrease of the length of the taper part 4 in the peripheral direction and to lengthen the life span of the bearing.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は回転機械のテーパランド
形スラスト軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tapered land type thrust bearing for a rotary machine.

【０００２】[0002]

【従来の技術】従来のテーパランド形スラスト軸受は、
図３に示す様にフラツト部３とごくゆるやかな勾配をも
つテーパ部４と、該テーパ部に油を供給する給油孔１０
を有する給油溝１とからなっている。このフラツト部３
とテーパ部４は、半径方向には勾配はない。2. Description of the Related Art Conventional taper land type thrust bearings are
As shown in FIG. 3, the flat portion 3 and the taper portion 4 having a very gentle gradient, and the oil supply hole 10 for supplying oil to the taper portion
And an oil supply groove 1 having. This flat part 3
The taper portion 4 has no gradient in the radial direction.

【０００３】なお２はスラストカラーである。Reference numeral 2 is a thrust color.

【０００４】[0004]

【発明が解決しようとする課題】このテーパランド形ス
ラスト軸受は、潤滑油中に含まれた異物によって摩耗し
テーパ部が減少して負荷能力が低下する。特に、デイー
ゼル機関のシステム油と潤滑油を共用する排気ガスター
ビン過給機では、潤滑油中に燃焼残渣等の異物が混入し
易く、スラスト軸受の寿命が短くなる場合があるという
問題点がある。This taper land type thrust bearing is worn by foreign matter contained in the lubricating oil, and the taper portion is reduced to reduce the load capacity. In particular, in an exhaust gas turbine supercharger that shares lubricating oil with system oil of a diesel engine, there is a problem that foreign matter such as combustion residue is easily mixed in the lubricating oil, which may shorten the life of the thrust bearing. .

【０００５】一方、従来のスラスト軸受の大型化によっ
て、面圧を下げ寿命を延ばすこともできるがスラスト軸
受の大型化に伴う軸受動力損失の増加で性能が低下する
為、好ましくない。本発明の目的は、軸受動力損失の増
加は最小限にとどめながら、スラスト軸受寿命を延長で
きるスラスト軸受を提供することにある。On the other hand, by increasing the size of the conventional thrust bearing, it is possible to reduce the surface pressure and extend the life, but this is not preferable because the performance is deteriorated due to an increase in bearing power loss accompanying the increase in size of the thrust bearing. An object of the present invention is to provide a thrust bearing that can extend the life of the thrust bearing while minimizing the increase in bearing power loss.

【０００６】[0006]

【課題を解決するための手段】上記の目的を達成するた
めの本発明の構成はフラツト部と該フラツト部に隣接す
る周方向のテーパ部と、該テーパ部に油を供給する給油
孔を有する給油溝とからなるテーパランド形スラスト軸
受において、前記フラツト部を所定径より外側を、径が
大きくなる程スラストカラーとのすき間が大きくなる様
に、半径方向に勾配をつけたことを特徴とする。なお、
この境目の径より内側は従来のテーパランド形スラスト
軸受と同様に、メタルフラツト面はスラストカラー面と
平行である。このフラツト面とスラストカラー面が平行
となる範囲、即ち、スラスト軸受メタルの内周径と該境
目の径との間の環状面積は、定格のスラスト力を受ける
のに必要十分な値に設定されている。In order to achieve the above object, the structure of the present invention comprises a flat portion, a circumferential taper portion adjacent to the flat portion, and an oil supply hole for supplying oil to the taper portion. In a taper land type thrust bearing consisting of an oil supply groove, the above-mentioned flat portion is provided with a radial gradient so that the outside of a predetermined diameter has a larger gap with the thrust collar as the diameter increases. . In addition,
Inside the diameter of this boundary, the metal flat surface is parallel to the thrust collar surface, as in the conventional taper land type thrust bearing. The range in which the flat surface and the thrust collar surface are parallel to each other, that is, the annular area between the inner diameter of the thrust bearing metal and the diameter of the boundary is set to a value necessary and sufficient to receive the rated thrust force. ing.

【０００７】[0007]

【作用】そして本発明は上記の手段によりスラスト力は
スラスト軸受メタルのテーパ部とスラストカラーの間に
生じる油膜圧力で支えている。一方、スラスト軸受メタ
ルが摩耗すると、フラツト部が増大し、テーパ部は減少
するのでテーパ部にて生じる油膜圧力が低下し、負荷能
力が低下するが、スラスト軸受メタルの外周側では、フ
ラツト部が半径方向に、スラストカラーとのすき間が大
きくなる様に、勾配がつけられているので、スラスト軸
受メタルが軸方向に摩耗すると、フラツト部のスラスト
カラーと平行な部分の幅Ｗが大きくなり、従って、スラ
スト力支持に寄与する有効なテーパ部の幅Ｗが拡大され
る為、スラスト軸受メタルの摩耗による負荷能力の低下
を低減でき、スラスト軸受の寿命を大幅に延長できる。According to the present invention, the thrust force is supported by the oil film pressure generated between the tapered portion of the thrust bearing metal and the thrust collar by the above means. On the other hand, when the thrust bearing metal wears, the flat portion increases and the taper portion decreases, so the oil film pressure generated in the taper portion decreases and the load capacity decreases, but on the outer peripheral side of the thrust bearing metal, the flat portion Since the thrust bearing metal is axially worn, the width W of the portion of the flat portion parallel to the thrust collar becomes large because the inclination is provided in the radial direction so that the gap with the thrust collar becomes large. Since the width W of the effective tapered portion that contributes to the thrust force support is expanded, it is possible to reduce the decrease in load capacity due to wear of the thrust bearing metal, and it is possible to greatly extend the life of the thrust bearing.

【０００８】[0008]

【実施例】以下本発明の一実施例を図１に基づいて説明
すると１１はスラスト軸受を示し、該スラスト軸受１１
上には複数個の給油溝１が設けられており、テーパ部４
とフラツト部３と円すい面５に接している。給油溝１と
フラツト部３との間のテーパ部４は、給油溝側が低くな
る、即ちスラストカラーとのすき間が大きくなるように
勾配がつけられている。一方、フラツト部３の所定径Ｘ
1 と給油溝側の所定径Ｘ2 を結ぶ、軸受と同心の円弧よ
り外側は、ゆるやかな円すい面５で、外周側程スラスト
カラーとのすき間が大きくなる。この円すい面５の半径
方向の勾配は、給油溝１上の点Ｘ3 とＸ2 を結ぶ線にて
円すい面５とテーパ部平面４が接する様にとられてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1. Reference numeral 11 designates a thrust bearing.
A plurality of oil supply grooves 1 are provided on the upper side of the taper portion 4
And the flat portion 3 and the conical surface 5 are in contact with each other. The taper portion 4 between the oil supply groove 1 and the flat portion 3 is inclined so that the oil supply groove side becomes lower, that is, the gap with the thrust collar becomes larger. On the other hand, the predetermined diameter X of the flat portion 3
A gentle conical surface 5 is formed outside the arc concentric with the bearing, which connects 1 to the predetermined diameter X 2 on the oil supply groove side, and the clearance with the thrust collar increases toward the outer peripheral side. The radial gradient of the conical surface 5 is set so that the conical surface 5 and the tapered portion plane 4 are in contact with each other at a line connecting the points X 3 and X 2 on the oil supply groove 1.

【０００９】なお、２はスラストカラーであって、円す
い面５の外径を十分カバーできる大きさになっている。
図中２０は軸受メタル、２１はバツクメタルを示す。次
にその摩耗状態を図８に基づいて説明する。ａは初期状
態のスラスト軸受を示す。Ｗはフラツト部３の幅で、こ
のＷの幅は相当する幅のテーパ部（図８のＷ×Ｂに相当
する面積）でスラスト力に抗する油圧が生じる。Numeral 2 is a thrust collar having a size sufficient to cover the outer diameter of the conical surface 5.
In the figure, 20 is a bearing metal and 21 is a back metal. Next, the worn state will be described with reference to FIG. “A” indicates the thrust bearing in the initial state. W is the width of the flat portion 3, and the width of this W is a taper portion of a corresponding width (area corresponding to W × B in FIG. 8) to generate hydraulic pressure against thrust force.

【００１０】一方、ｂ，ｃはスラスト軸受メタルが、潤
滑油中の異物等によって摩耗した状態を示す。摩耗が進
むとテーパ部４の周方向長さＬは短くなるが、フラツト
部３とテーパ部４は円すい面５に接しているので、フラ
ツト部の幅Ｗは摩耗が進行する程大きくなる。即ち、ス
ラスト軸受メタルが摩耗する程、大径のスラスト軸受を
用いたのと同等になるので、テーパ部の周方向長さＬの
減少による負荷能力低下を補なうことができる。On the other hand, b and c show a state in which the thrust bearing metal is worn by foreign matter in the lubricating oil. As the wear progresses, the circumferential length L of the taper portion 4 becomes shorter, but since the flat portion 3 and the taper portion 4 are in contact with the conical surface 5, the width W of the flat portion becomes larger as the wear progresses. That is, as the thrust bearing metal wears, it becomes equivalent to the use of a large-diameter thrust bearing, so that the reduction of the load capacity due to the reduction of the circumferential length L of the tapered portion can be compensated.

【００１１】[0011]

【発明の効果】このように本発明によるときはテーパラ
ンド形スラスト軸受の表面に形成されるフラツト部を、
所定径より外側を、径が大きくなる程スラストカラーと
のすき間が大きくなる様に半径方向に勾配をつけたもの
であるからフラツト部の幅は摩耗が進行する程大きくな
って大径のスラスト軸受を用いたのと同等になるのでテ
ーパ部の周方向長さの減少による負荷能力低下を補なう
ことができるのでスラスト軸受の寿命が大幅に延長され
る効果を有する。As described above, according to the present invention, the flat portion formed on the surface of the tapered land type thrust bearing is
The outer side of the specified diameter is graded in the radial direction so that the clearance with the thrust collar increases as the diameter increases, so the width of the flat part increases as wear progresses, and the thrust bearing of large diameter Since it becomes the same as that of using, it is possible to compensate for the decrease in the load capacity due to the decrease in the circumferential length of the tapered portion, so that the life of the thrust bearing is significantly extended.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.

【図２】図１の断面図である。FIG. 2 is a cross-sectional view of FIG.

【図３】図１の要部の拡大図である。FIG. 3 is an enlarged view of a main part of FIG.

【図４】図３のＡ−Ａ線断面図である。4 is a cross-sectional view taken along the line AA of FIG.

【図５】図３のＢ1 −Ｂ1 線断面図である。5 is a sectional view taken along line B 1 -B 1 of FIG.

【図６】図３のＢ2 −Ｂ2 線断面図である。FIG. 6 is a sectional view taken along line B 2 -B 2 of FIG.

【図７】図３のＣ−Ｃ線断面図である。7 is a cross-sectional view taken along the line CC of FIG.

【図８】本発明の摩耗状態を示す説明図で、（ａ）は初
期状態、（ｂ）は中間摩耗状態、（ｃ）は最大摩耗状態
を示す。FIG. 8 is an explanatory view showing a worn state of the present invention, (a) shows an initial state, (b) shows an intermediate worn state, and (c) shows a maximum worn state.

【図９】従来例を示す平面図である。FIG. 9 is a plan view showing a conventional example.

【図１０】図９の断面図である。10 is a cross-sectional view of FIG.

【図１１】図９のＣ−Ｃ線断面図である。FIG. 11 is a sectional view taken along line CC of FIG.

【符号の説明】[Explanation of symbols]

１ 給油溝 ２ スラストカラー ３ フラツト部 ４ テーパ部 ５ 円すい面 １０ 給油孔 1 Lubrication groove 2 Thrust collar 3 Flat part 4 Tapered part 5 Conical surface 10 Lubrication hole

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 フラツト部と該フラツト部に隣接する周
方向のテーパ部と該テーパ部に油を供給する給油孔を有
する給油溝とからなるテーパランド形スラスト軸受にお
いて、前記フラツト部を所定径より外側を、径が大きく
なる程、スラストカラーとのすき間が大きくなる様に、
半径方向に勾配をつけたことを特徴とするテーパランド
形スラスト軸受。1. A taper land type thrust bearing comprising a flat portion, a circumferential taper portion adjacent to the flat portion, and an oil supply groove having an oil supply hole for supplying oil to the taper portion, wherein the flat portion has a predetermined diameter. On the outer side, the larger the diameter, the larger the gap with the thrust collar,
A taper land type thrust bearing characterized by having a radial gradient.
JP27406091A 1991-10-22 1991-10-22 Taper land type thrust bearing Withdrawn JPH05118320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27406091A JPH05118320A (en) 1991-10-22 1991-10-22 Taper land type thrust bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27406091A JPH05118320A (en) 1991-10-22 1991-10-22 Taper land type thrust bearing

Publications (1)

Publication Number Publication Date
JPH05118320A true JPH05118320A (en) 1993-05-14

Family

ID=17536413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27406091A Withdrawn JPH05118320A (en) 1991-10-22 1991-10-22 Taper land type thrust bearing

Country Status (1)

Country Link
JP (1) JPH05118320A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001086703A (en) * 2000-07-31 2001-03-30 Hitachi Ltd Spindle motor
US20130044971A1 (en) * 2011-08-19 2013-02-21 Us Synthetic Corporation Bearing assemblies, apparatuses, and motor assemblies using the same
KR20140142319A (en) * 2012-04-10 2014-12-11 보르그워너 인코퍼레이티드 Turbocharger with thrust bearing providing combined journal and thrust bearing functions

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001086703A (en) * 2000-07-31 2001-03-30 Hitachi Ltd Spindle motor
US20130044971A1 (en) * 2011-08-19 2013-02-21 Us Synthetic Corporation Bearing assemblies, apparatuses, and motor assemblies using the same
US8657498B2 (en) * 2011-08-19 2014-02-25 Us Synthetic Corporation Bearing assemblies, apparatuses, and motor assemblies using the same
US9249829B2 (en) 2011-08-19 2016-02-02 Us Synthetic Corporation Bearing assemblies, apparatuses, and motor assemblies using the same
KR20140142319A (en) * 2012-04-10 2014-12-11 보르그워너 인코퍼레이티드 Turbocharger with thrust bearing providing combined journal and thrust bearing functions

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Legal Events

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Effective date: 19990107