JPH08145052A - Dynamic pressure bearing - Google Patents

Dynamic pressure bearing

Info

Publication number
JPH08145052A
JPH08145052A JP28958594A JP28958594A JPH08145052A JP H08145052 A JPH08145052 A JP H08145052A JP 28958594 A JP28958594 A JP 28958594A JP 28958594 A JP28958594 A JP 28958594A JP H08145052 A JPH08145052 A JP H08145052A
Authority
JP
Japan
Prior art keywords
pad
bearing
support
pads
plate
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
Application number
JP28958594A
Other languages
Japanese (ja)
Inventor
Susumu Ishibashi
進 石橋
Kazuyuki Nanbu
和幸 南部
Shohei Ota
昌平 太田
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 JP28958594A priority Critical patent/JPH08145052A/en
Publication of JPH08145052A publication Critical patent/JPH08145052A/en
Pending legal-status Critical Current

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  • Sliding-Contact Bearings (AREA)

Abstract

PURPOSE: To provide a dynamic pressure bearing wherein a plurality of pads each formed in its lower part with a fulcrum for inclining oscillation are arranged in a ring-like shape on a support ring, and are held by pad support members so as to be circumferentially swingable, and a plurality of strikers are attached orthogonal to a rotary shaft piercing through a center hole in the support ring and the center part of the plurality of pads arranged in the ring-like shape, and are made into contact with the upper surfaces of the pads, and wherein uniforming of the pad support forces, the prevention of abrasion of the bearing surface and prevention of yielding of the support part and the striker bearing force can be enhanced. CONSTITUTION: A pad 51 is composed of a pad base 13, a pad bearing plate which is supported on the upper surface of the pad support base plate 13 through the intermediary of a resilient member, and which is made of a high hard material such as ceramic, and a support plate 18 which is laid underneath the pad base 13, and which is made of a highly hard material. A fluid introduction groove 20 and a recessed pocket 21 communicated with the groove 20 are formed in the upper surface of the pad bearing plate 15.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は各種ポンプ等回転機の主
軸等の回転軸を支承する動圧軸受に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic pressure bearing for supporting a rotary shaft such as a main shaft of a rotary machine such as a pump.

【0002】[0002]

【従来の技術】図10は従来の動圧軸受の縦断面図、図
11は同軸受の横断面図、図12は同軸受のパッドとパ
ッド支えの斜視図である。図10において、1は回転す
るポンプの主軸、2は固定されているポンプのケーシン
グ、3はナット、4は同ナットによって前記主軸の端部
に固定されているスラストカラー、5はポンプケーシン
グに固定されている軸受支持台、6は回り止めピン、8
は同ピンによって回りが止められて固定されている支持
リング、9は同支持リングに装着されているパッド支
え、7は同パッド支えによって支えられている複数のパ
ッドである。符号5,6,7,8,9を付した部分によ
ってパッド軸受10が構成され、スラストカラー4を介
して付加されるスラスト力を摺動面Sによって受けるよ
うになっている。
2. Description of the Related Art FIG. 10 is a vertical sectional view of a conventional dynamic pressure bearing, FIG. 11 is a horizontal sectional view of the bearing, and FIG. 12 is a perspective view of a pad and a pad support of the bearing. In FIG. 10, 1 is a rotating pump main shaft, 2 is a fixed pump casing, 3 is a nut, 4 is a thrust collar fixed to the end of the main shaft by the nut, and 5 is a pump casing. Bearing support, 6 is a detent pin, 8
Is a support ring whose rotation is stopped and fixed by the pin, 9 is a pad support mounted on the support ring, and 7 is a plurality of pads supported by the pad support. The pad bearing 10 is configured by the portions denoted by reference numerals 5, 6, 7, 8, and 9, and the sliding surface S receives the thrust force applied via the thrust collar 4.

【0003】図10,図12において、12は各パッド
12の両側に設けられている溝であり、前記のパッド支
えがゆるやかに挿入されている。図10において、各パ
ッド7には、その底部に突起した支持部11が設けられ
ており、その端面で支持リング8の表面に接している。
In FIGS. 10 and 12, reference numeral 12 is a groove provided on both sides of each pad 12, into which the pad support is loosely inserted. In FIG. 10, each pad 7 is provided with a protruding support portion 11 on the bottom thereof, and its end face is in contact with the surface of the support ring 8.

【0004】図13は上記軸受の複数のパッド7の外周
面における展開図であり、作用説明図である。パッド7
は支持部11の端面を基点として回転方向に対してわず
かに傾斜揺動する。摺動面Sは、実際にはスラストカラ
ー表面SA とパッドの軸受面SB とが分離されており、
前記の傾斜揺動によってその間に流体膜hが形成され、
こゝに動圧が変換されて流体静圧力Pが発生するこの圧
力によってスラスト力が支承される。
FIG. 13 is a development view on the outer peripheral surface of the plurality of pads 7 of the above-mentioned bearing, and is an operation explanatory view. Pad 7
Oscillates slightly with respect to the rotation direction with the end surface of the support portion 11 as a base point. In the sliding surface S, the thrust collar surface S A and the pad bearing surface S B are actually separated,
A fluid film h is formed between them by the tilting swing,
The dynamic force is converted into the static pressure P of the fluid, and the thrust force is supported by this pressure.

【0005】[0005]

【発明が解決しようとする課題】従来の動圧軸受におい
ては、スラストカラー表面SA には、全パッド7の表面
が均一に対向し、均一な流体膜が生じていることが必要
である。しかしながら、製作誤差によって、パッドの高
さが必ずしも全パッドで同一でないことが起る。この時
は、図13の左側パッドと右側パッドのように、パッド
高さがHとH1 のように異り、これによって、流体膜の
厚さはhとh1 のように異り、流体圧力もPとP1 のよ
うに異ったものとなる。これによって片当りが生じ、各
パッドの支承力にアンバランスが生じる。
In the conventional dynamic pressure bearing, it is necessary that the surfaces of all the pads 7 are uniformly opposed to each other on the thrust collar surface S A to form a uniform fluid film. However, due to manufacturing errors, the height of the pads may not be the same for all pads. At this time, like the left pad and the right pad in FIG. 13, the pad heights are different as H and H 1 , and accordingly, the thickness of the fluid film is different as h and h 1 , The pressure is also different like P and P 1 . This causes one-sided contact, resulting in imbalance in the bearing force of each pad.

【0006】また、従来の動圧軸受では、各パッドは一
般に軟質材で作られているが、異物を含んだ流体中に軸
受面が構成されることによって、異物によりパッドの軸
受面SB の摩耗が大きくなる。一方、支持リング8に接
して荷重を支える支持部11は軟質のため、大きな面圧
に対してヘタリが発生し、耐久性が欠ける。
Further, in the conventional dynamic pressure bearing, each pad is generally made of a soft material. However, since the bearing surface is formed in the fluid containing the foreign matter, the foreign matter causes the bearing surface S B of the pad to move. Greater wear. On the other hand, since the supporting portion 11 that is in contact with the supporting ring 8 and supports the load is soft, it is settled against a large surface pressure and lacks durability.

【0007】また、従来の動圧軸受においては、支持部
11を基点とするパッドの傾斜作用で軸受面に流体圧力
を発生させているが、流体圧力の発生不足によって、高
荷重のスラスト力Fを支承する能力に限界がある。
Further, in the conventional dynamic pressure bearing, the fluid pressure is generated on the bearing surface by the tilting action of the pad with the support portion 11 as a base point. However, due to insufficient generation of the fluid pressure, the thrust force F of high load is applied. There is a limit to the ability to support.

【0008】本発明は上記従来の動圧軸受の欠点を解消
し、 (1)各パッドの支承力均等化する。 (2)パッド上面の軸受面の摩耗およびパッド下面の支
持部のヘタリを防止し、耐久性の向上を図る。 (3)スラスト力支承能力を向上させる。 ことを目的としたものである。
The present invention solves the above-mentioned drawbacks of the conventional dynamic pressure bearing, and (1) equalizes the bearing force of each pad. (2) Abrasion of the bearing surface on the upper surface of the pad and settling of the support portion on the lower surface of the pad are prevented to improve durability. (3) Improve thrust bearing capacity. This is the purpose.

【0009】[0009]

【課題を解決するための手段】本発明は上記課題を解決
したものであって、固定部に連なり中心孔を有する円板
部とその周囲のフランジ部をからなる支持リング、下部
にそれぞれ傾斜揺動の支点となる部分を備えた複数のパ
ッド、前記支持リングの円板部上において円環状に配列
された前記複数のパッドを円周方向に傾斜揺動可能に保
持するよう同支持リングのフランジ部に内方に向けて突
出して設けられたパッド支え部材、前記支持リングの中
心孔と円環状に配列された複数のパッドの中央部とを貫
通する回転軸、及び同回転軸に直交して取付けられ軸受
面となる前記パッドの上面に接する円板状のスラストカ
ラーからなる動圧軸受において、前記パッドを、パッド
基板、同パッド基板の上面に弾性体を介し且つピンある
いは止め板等の支持手段によって支持されたセラミック
ス等の高硬度材料で作られたパッド軸受板、及び前記パ
ッド基板の下面に設けられた合わせ溝に挿入装着され前
記支持リングに接しパッドの傾斜揺動の支点となる高硬
度材料で作られた支持板から構成し、前記パッド軸受板
の軸受面に流体導入溝と同溝に連なる凹状のポケットを
穿設したことを特徴とする動圧軸受に関するものであ
る。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a support ring composed of a disc portion having a central hole connected to a fixed portion and a flange portion around the disc portion, and an inclined rocking member at a lower portion thereof, respectively. A plurality of pads having a portion serving as a fulcrum of movement, and a flange of the support ring for holding the plurality of pads arranged in an annular shape on the disc portion of the support ring so as to be tiltably swingable in the circumferential direction. Pad supporting member provided so as to project inwardly in the portion, a rotation axis that penetrates the center hole of the support ring and the central portion of the plurality of pads arranged in an annular shape, and orthogonal to the rotation axis. In a dynamic pressure bearing formed of a disk-shaped thrust collar that is in contact with the upper surface of the pad that is mounted and serves as a bearing surface, the pad is supported on the upper surface of the pad substrate and the upper surface of the pad substrate through an elastic body and pins or stopper plates. Pad bearing plate made of a high hardness material such as ceramics supported by means, and a height which is inserted and mounted in a mating groove provided on the lower surface of the pad substrate and which contacts the support ring and serves as a fulcrum for tilting and swinging of the pad. The present invention relates to a dynamic pressure bearing comprising a support plate made of a hard material, and a recessed pocket continuous with the fluid introduction groove and the fluid introduction groove is formed on the bearing surface of the pad bearing plate.

【0010】[0010]

【作用】[Action]

(1)パッド基板とパッド軸受板との間に弾性体を介在
させることによって、パッドの高さの差が吸収され、片
当りが防止され、スラスト支承力が均等化する。 (2)パッド軸受板および支持板が高硬度材料で作られ
ているので、パッド軸受板の摩耗および支持板のヘタリ
が防止され、耐久性が向上する。 (3)パッド軸受板に設けた流体導入溝から流体がポケ
ットに入り、そこで流体静圧力となるので、圧力が全体
的に増加し、スラスト支承力が向上する。
(1) By interposing the elastic body between the pad substrate and the pad bearing plate, the difference in the height of the pads is absorbed, one-sided contact is prevented, and the thrust bearing force is equalized. (2) Since the pad bearing plate and the support plate are made of a high hardness material, abrasion of the pad bearing plate and settling of the support plate are prevented, and durability is improved. (3) Since the fluid enters the pocket from the fluid introduction groove provided in the pad bearing plate and becomes a hydrostatic pressure there, the pressure is increased overall and the thrust bearing force is improved.

【0011】[0011]

【実施例】図1は本発明の第1実施例に係るパッド51
の斜視図、図2は同パッドの断面図(図1のA−A断面
図)である。このパッドは複数の部材からなる集合体で
ある。図において、13はパッド基板、14はその上に
設けられた弾性体、15はその上に設けられたパッド軸
受板、16は上記3個の部材を連結するピンであり、2
個設けられている。17はパッド基板13の底部に設け
られている合わせ溝、18は同溝に挿入装着されている
支持板である。上記弾性体14はゴム等で作られてい
る。15はセラミックス等の高硬度材で作られている。
支持板18も高硬度材で作られている。19はパッド基
板13に設けられた切欠き状の部分であって、弾性体1
4と共に溝を形成している。これは、従来技術の項で説
明したパッド支え9が嵌装される部分である。20はパ
ッド軸受板15に設けられた流体導入溝、21は同溝に
連り凹状に形成されたポケットである。
FIG. 1 shows a pad 51 according to a first embodiment of the present invention.
2 is a cross-sectional view of the pad (cross-sectional view taken along the line AA in FIG. 1). This pad is an assembly composed of a plurality of members. In the figure, 13 is a pad substrate, 14 is an elastic body provided thereon, 15 is a pad bearing plate provided thereon, 16 is a pin connecting the above three members,
It is provided individually. Reference numeral 17 is a mating groove provided on the bottom of the pad substrate 13, and 18 is a support plate inserted and mounted in the groove. The elastic body 14 is made of rubber or the like. Reference numeral 15 is made of a high hardness material such as ceramics.
The support plate 18 is also made of a high hardness material. Reference numeral 19 denotes a cutout portion provided on the pad substrate 13,
4 together with the groove. This is the portion where the pad support 9 described in the section of the prior art is fitted. Reference numeral 20 is a fluid introduction groove provided in the pad bearing plate 15, and 21 is a pocket formed in a concave shape connected to the groove.

【0012】図3は上記実施例の動圧軸受の複数のパッ
ド51の外周面における展開図である。本実施例のパッ
ドは、パッド基板13上に、弾性体14を介してパッド
軸受板15を支持しているので、各パッドの構成部材の
寸法誤差を弾性体で吸収し、図のように各パッド軸受高
さHを同一にすることができる。これによって、流体膜
生成厚さh、およびそれによる流体膜圧力Pが同じにな
り、全周上でバランスのとれた負荷能力を呈し、片当り
等の発生を防止することができる。
FIG. 3 is a development view of the outer peripheral surfaces of the plurality of pads 51 of the dynamic pressure bearing of the above embodiment. Since the pad of this embodiment supports the pad bearing plate 15 on the pad substrate 13 via the elastic body 14, the elastic body absorbs the dimensional error of the constituent members of each pad, and as shown in FIG. The pad bearing heights H can be the same. As a result, the fluid film formation thickness h and the resulting fluid film pressure P become the same, exhibiting a balanced load capacity on the entire circumference, and it is possible to prevent the occurrence of one-sided contact or the like.

【0013】またパッド基板に高硬度の支持板18を挿
入装着しているので、支持板のヘタリを減じ、耐久性の
向上を図ることができる。
Further, since the support plate 18 having a high hardness is inserted and mounted on the pad substrate, it is possible to reduce the settling of the support plate and improve the durability.

【0014】図4は上記実施例の動圧軸受の、パッド5
1のポケット21の付近における周方向の断面図であ
る。従来はパッド傾斜によって発生する動圧力Ps のみ
であったが、本実施例では、溝20から導入された流体
によってポケット21の部分で発生する動圧力Pd が付
加されるので、パッド軸受の負荷能力を一層向上させる
ことができる。
FIG. 4 shows the pad 5 of the dynamic pressure bearing of the above embodiment.
2 is a cross-sectional view in the circumferential direction near the pocket 21 of FIG. Conventionally, only the dynamic pressure Ps generated by the pad inclination is used, but in this embodiment, the dynamic pressure Pd generated in the pocket 21 is added by the fluid introduced from the groove 20, so the load capacity of the pad bearing is increased. Can be further improved.

【0015】以上のように本実施例の動圧軸受は、パッ
ドの構成を改良したことによって、次の効果がもたらさ
れている。 (1)弾性体によって高さの差を吸収して片当りを防止
し、各パッドの支承力が均等化する。 (2)軸受面の摩耗および支持部のヘタリが少いので耐
久性が向上する。 (3)ポケット部で発生する付加流体圧力によって負荷
能力が向上する。
As described above, in the dynamic pressure bearing of the present embodiment, the following effects are brought about by improving the structure of the pad. (1) The elastic body absorbs the difference in height to prevent one-sided contact and equalize the bearing force of each pad. (2) The wear is reduced on the bearing surface and the settling of the supporting portion is small, so that the durability is improved. (3) The load capacity is improved by the additional fluid pressure generated in the pocket portion.

【0016】図5は本発明の第2実施例に係るパッド5
2の斜視図である。本実施例はパッド基板22の両側部
を張り出し、そこにパッド軸受板15の位置決め用のツ
バ23が一体的に設けてある。上記以外の部分の構成は
第1実施例と同じである。
FIG. 5 shows a pad 5 according to a second embodiment of the present invention.
It is a perspective view of FIG. In this embodiment, both sides of the pad substrate 22 are projected, and a brim 23 for positioning the pad bearing plate 15 is integrally provided there. The configuration other than the above is the same as that of the first embodiment.

【0017】図6は本発明の第3実施例に係るパッド5
3の斜視図である。本実施例においてはパッド基板24
の両側に、パッド軸受板15の位置決め用止め板25が
ネジ26によって取付けてある。上記以外の部分の構成
は第1実施例と同じである。
FIG. 6 shows a pad 5 according to the third embodiment of the present invention.
3 is a perspective view of FIG. In this embodiment, the pad substrate 24
Positioning stop plates 25 for the pad bearing plate 15 are attached to both sides of the pad by screws 26. The configuration other than the above is the same as that of the first embodiment.

【0018】図7は本発明の第4実施例に係るパッド5
4の斜視図である。本実施例は、パッド基板27の内周
面に上部に折れ曲り部28を有する押え板29をネジ3
0によって取付け、パッド軸受板31の内周部に段差部
32を設け、同段差部を前記の折れ曲り部28によって
押えることによってパッド軸受板31の位置を決めるよ
うにしたものである。上記以外の部分の構成は第1実施
例と同じである。
FIG. 7 shows a pad 5 according to a fourth embodiment of the present invention.
4 is a perspective view of FIG. In this embodiment, a pressing plate 29 having a bent portion 28 is provided on the inner peripheral surface of the pad substrate 27 with a screw 3.
0, the pad bearing plate 31 is provided with a step portion 32 on the inner peripheral portion thereof, and the step portion is pressed by the bent portion 28 to determine the position of the pad bearing plate 31. The configuration other than the above is the same as that of the first embodiment.

【0019】図8は本発明の第5実施例に係るパッド5
5の斜視図である。本実施例においてはパッド基板33
の内周面に、第4実施例と同形の押え板29を取付ける
と共に、外周面にも、折れ曲り部34を有する押え板3
5をネジで取付け、パッド軸受板36には内周部に段差
部37、外周部に段差38を設け、前記各押え板の折れ
曲り部28,34によって押え、パッド軸受板の位置を
決めるようにしたものである。上記以外の部分の構成は
第1実施例と同じである。
FIG. 8 shows a pad 5 according to a fifth embodiment of the present invention.
5 is a perspective view of FIG. In this embodiment, the pad substrate 33
The pressing plate 29 having the same shape as that of the fourth embodiment is attached to the inner peripheral surface of the pressing plate 3 and the pressing plate 3 having the bent portion 34 also on the outer peripheral surface.
5, the pad bearing plate 36 is provided with a step portion 37 on the inner peripheral portion and a step portion 38 on the outer peripheral portion, and the pad bearing plate is positioned by pressing it by the bent portions 28 and 34 of the pressing plates. It is the one. The configuration other than the above is the same as that of the first embodiment.

【0020】図9は本発明の第6実施例に係るパッド5
6の斜視図である。本実施例のパッド軸受板39には切
欠き40が設けられ、パッド基板41に取付けられたキ
ー42を前記の切欠き40に嵌装してパッド軸受板の位
置決めをするようにしてある。上記以外の部分の構成は
第1実施例と同じである。
FIG. 9 shows a pad 5 according to a sixth embodiment of the present invention.
6 is a perspective view of FIG. The pad bearing plate 39 of this embodiment is provided with a notch 40, and the key 42 attached to the pad substrate 41 is fitted in the notch 40 to position the pad bearing plate. The configuration other than the above is the same as that of the first embodiment.

【0021】上述した第2〜第6の各実施例はパッド集
合体の各部材の接続あるいは位置決めの方法に関する各
種の例である。動圧軸受としての作用および効果は第1
実施例と同じである。
The above-mentioned second to sixth embodiments are various examples relating to the method of connecting or positioning the respective members of the pad assembly. The first action and effect as a dynamic pressure bearing
Same as the embodiment.

【0022】[0022]

【発明の効果】本発明の動圧軸受においては、パッド
を、パッド基板、同パッド基板の上面に弾性体を介し、
且つピンあるいは止め板等の支持手段によって支持され
たセラミックス等の高硬度材料で作られたパッド軸受
板、及び前記パッド基板の下面に設けられた合わせ溝に
挿入装着され支持リングに接しパッドの傾斜揺動の支点
となる高硬度材料で作られた支持板から構成し、前記パ
ッド軸受板の軸受面に流体導入溝と同溝に連なる凹状の
ポケットを穿設してあるので、 (1)各パッドの支承力を均等化することができる。 (2)軸受面の摩耗および支持部のヘタリを防止するこ
とができる。 (3)スラスト支承能力を向上することができる。
In the dynamic pressure bearing of the present invention, the pad is provided on the pad substrate and on the upper surface of the pad substrate through the elastic body,
In addition, a pad bearing plate made of a high hardness material such as ceramics supported by a supporting means such as a pin or a stop plate, and an inclination of the pad that is inserted into and attached to a mating groove provided on the lower surface of the pad substrate and contacts a support ring. The pad bearing plate is formed of a support plate made of a high-hardness material that serves as a fulcrum of oscillation, and a concave pocket continuous with the fluid introduction groove and the groove is formed on the bearing surface of the pad bearing plate. The support force of the pad can be equalized. (2) It is possible to prevent wear of the bearing surface and settling of the support portion. (3) The thrust bearing ability can be improved.

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

【図1】本発明の第1実施例に係るパッドの斜視図。FIG. 1 is a perspective view of a pad according to a first embodiment of the present invention.

【図2】同パッドの断面図(図1のA−A断面図)。FIG. 2 is a cross-sectional view of the pad (A-A cross-sectional view of FIG. 1).

【図3】上記実施例の動圧軸受の複数のパッドの外周面
における展開図。
FIG. 3 is a development view of an outer peripheral surface of a plurality of pads of the dynamic pressure bearing of the above embodiment.

【図4】上記実施例の動圧軸受のパッドのポケットの付
近における周方向の断面図。
FIG. 4 is a cross-sectional view in the circumferential direction near the pocket of the pad of the dynamic pressure bearing of the above embodiment.

【図5】本発明の第2実施例に係るパッドの斜視図。FIG. 5 is a perspective view of a pad according to a second embodiment of the present invention.

【図6】本発明の第3実施例に係るパッドの斜視図。FIG. 6 is a perspective view of a pad according to a third embodiment of the present invention.

【図7】本発明の第4実施例に係るパッドの斜視図。FIG. 7 is a perspective view of a pad according to a fourth embodiment of the present invention.

【図8】本発明の第5実施例に係るパッドの斜視図。FIG. 8 is a perspective view of a pad according to a fifth embodiment of the present invention.

【図9】本発明の第6実施例に係るパッドの斜視図。FIG. 9 is a perspective view of a pad according to a sixth embodiment of the present invention.

【図10】従来の動圧軸受の縦断面図。FIG. 10 is a vertical sectional view of a conventional dynamic pressure bearing.

【図11】同軸受の横断面図。FIG. 11 is a transverse sectional view of the bearing.

【図12】同軸受のパッドとパッド支えの斜視図。FIG. 12 is a perspective view of a pad and a pad support of the bearing.

【図13】同軸受の複数のパッドの外周面における展開
図。
FIG. 13 is a development view of an outer peripheral surface of a plurality of pads of the bearing.

【符号の説明】[Explanation of symbols]

13 パッド基板 14 弾性体 15 パッド軸受板 16 ピン 17 合わせ溝 18 支持板 19 溝(パッド支えが嵌入される) 20 流体導入溝 21 ポケット 51 パッド(第1実施例) 52 パッド(第2実施例) 53 パッド(第3実施例) 54 パッド(第4実施例) 55 パッド(第5実施例) 56 パッド(第6実施例) 13 pad substrate 14 elastic body 15 pad bearing plate 16 pin 17 mating groove 18 support plate 19 groove (pad support is fitted) 20 fluid introduction groove 21 pocket 51 pad (first embodiment) 52 pad (second embodiment) 53 pad (third embodiment) 54 pad (fourth embodiment) 55 pad (fifth embodiment) 56 pad (sixth embodiment)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 固定部に連なり中心孔を有する円板部と
その周囲のフランジ部をからなる支持リング、下部にそ
れぞれ傾斜揺動の支点となる部分を備えた複数のパッ
ド、前記支持リングの円板部上において円環状に配列さ
れた前記複数のパッドを円周方向に傾斜揺動可能に保持
するよう同支持リングのフランジ部に内方に向けて突出
して設けられたパッド支え部材、前記支持リングの中心
孔と円環状に配列された複数のパッドの中央部とを貫通
する回転軸、及び同回転軸に直交して取付けられ軸受面
となる前記パッドの上面に接する円板状のスラストカラ
ーからなる動圧軸受において、前記パッドを、パッド基
板、同パッド基板の上面に弾性体を介し且つピンあるい
は止め板等の支持手段によって支持されたセラミックス
等の高硬度材料で作られたパッド軸受板、及び前記パッ
ド基板の下面に設けられた合わせ溝に挿入装着され前記
支持リングに接しパッドの傾斜揺動の支点となる高硬度
材料で作られた支持板から構成し、前記パッド軸受板の
軸受面に流体導入溝と同溝に連なる凹状のポケットを穿
設したことを特徴とする動圧軸受。
1. A support ring comprising a disk portion which is connected to a fixed portion and which has a central hole and a flange portion around the disk portion, a plurality of pads each having a lower portion which is a fulcrum of tilt swing, and the support ring. A pad support member provided so as to project inwardly on a flange portion of the support ring so as to hold the plurality of pads arranged in an annular shape on the disc portion so as to be tiltable and swingable in the circumferential direction, A rotary shaft that penetrates the center hole of the support ring and the central portion of a plurality of annularly arranged pads, and a disk-shaped thrust that is mounted orthogonal to the rotary shaft and that is in contact with the upper surface of the pad that serves as a bearing surface. In a dynamic pressure bearing consisting of a collar, the pad is made of a high hardness material such as ceramics which is supported on the pad substrate and the upper surface of the pad substrate via an elastic body and by a supporting means such as a pin or a stop plate. A pad bearing plate and a support plate made of a high hardness material that is inserted and fitted in a mating groove provided on the lower surface of the pad substrate and is in contact with the support ring and serves as a fulcrum for tilting and swinging of the pad. A hydrodynamic bearing characterized in that a recessed pocket continuous with the fluid introduction groove is formed on the bearing surface of the pad bearing plate.
JP28958594A 1994-11-24 1994-11-24 Dynamic pressure bearing Pending JPH08145052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28958594A JPH08145052A (en) 1994-11-24 1994-11-24 Dynamic pressure bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28958594A JPH08145052A (en) 1994-11-24 1994-11-24 Dynamic pressure bearing

Publications (1)

Publication Number Publication Date
JPH08145052A true JPH08145052A (en) 1996-06-04

Family

ID=17745143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28958594A Pending JPH08145052A (en) 1994-11-24 1994-11-24 Dynamic pressure bearing

Country Status (1)

Country Link
JP (1) JPH08145052A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015094373A (en) * 2013-11-08 2015-05-18 三菱日立パワーシステムズ株式会社 Tilting pad thrust bearing and rotary machine with tilting pad thrust bearing
JP2019086023A (en) * 2017-11-01 2019-06-06 三菱重工コンプレッサ株式会社 Journal bearing and rotary machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015094373A (en) * 2013-11-08 2015-05-18 三菱日立パワーシステムズ株式会社 Tilting pad thrust bearing and rotary machine with tilting pad thrust bearing
JP2019086023A (en) * 2017-11-01 2019-06-06 三菱重工コンプレッサ株式会社 Journal bearing and rotary machine

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