JPS596419A - Vertical type thrust bearing device - Google Patents
Vertical type thrust bearing deviceInfo
- Publication number
- JPS596419A JPS596419A JP57114256A JP11425682A JPS596419A JP S596419 A JPS596419 A JP S596419A JP 57114256 A JP57114256 A JP 57114256A JP 11425682 A JP11425682 A JP 11425682A JP S596419 A JPS596419 A JP S596419A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- thrust
- pad
- runner
- 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
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
- F16C17/06—Sliding-contact bearings for exclusively rotary movement for axial load only with tiltably-supported segments, e.g. Michell bearings
-
- 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
- F16C37/00—Cooling of bearings
- F16C37/002—Cooling of bearings of fluid bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Motor Or Generator Frames (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、スラストパッド間の潤滑油の流通を改良し
た立て形スラスト軸受装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vertical thrust bearing device that improves the flow of lubricating oil between thrust pads.
例えば立て軸水車発電機などの従来の立て形スラスト軸
受装置は、第１図及び第２図に縦断面図及びスラストパ
ッド部の正面断面図で示すようになっていた。ｆｉｌは
回転軸で、スラストカラー（２）が一体にあるいは固着
により設けられている。（３）はこのスラストカラー（
２）の下面に固定され一体に回転されるスラストランナ
で、内円周側から半径方向に放射状に複数の射出穴（３
ａ）が設けられ、遠心ポンプ手段（４）を形成している
。（５）はこのスラストランナ（３）を下方から回転自
在に支持する複数のスラストパッド、（６）はスラスト
軸受部を収容し潤滑油（１８）を自蔵する油槽、（７）
は各スラストパッド（５）を傾斜可能に支持するピボッ
トで、油槽（６）の底部に固着された受台（８）にねじ
込まれ固定されている。For example, a conventional vertical thrust bearing device such as a vertical shaft water turbine generator is shown in FIGS. 1 and 2 as a vertical sectional view and a front sectional view of a thrust pad portion. fil is a rotating shaft, and a thrust collar (2) is provided integrally or fixedly thereon. (3) is this thrust color (
2) A thrust runner that is fixed to the bottom surface and rotates integrally, and has multiple injection holes (3) radially radially from the inner circumferential side.
a) are provided and form centrifugal pump means (4). (5) is a plurality of thrust pads that rotatably support the thrust runner (3) from below; (6) is an oil tank that accommodates the thrust bearing and contains lubricating oil (18); (7)
is a pivot that tiltably supports each thrust pad (5), and is screwed and fixed to a pedestal (8) fixed to the bottom of the oil tank (6).
（９）は各スラストパッド（５）開位置に半径方向に配
設され、油槽（６）の底部に取付けられた複数の油かき
装置で、次のようになっている。取付板ｔｉｏ）上に複
数の支持柱（ＩＩ）か固着され、この支持柱の支持溝（
１１ａ）に低摩擦係数材からなる油かき板（１２）が通
されていて、押圧ばね（１（至）により上方に押圧され
、スラストランナ（３）の下面をしゆう動自在に圧接し
ている。(9) is a plurality of oil scraping devices arranged radially in the open position of each thrust pad (5) and attached to the bottom of the oil tank (6), which are as follows. A plurality of support columns (II) are fixed on the mounting plate (tio), and the support grooves (
An oil-scraped plate (12) made of a low-friction coefficient material is passed through 11a), and is pressed upward by a pressure spring (1) so as to be movably pressed against the lower surface of the thrust runner (3). There is.
次に、（１４）はスラストランナ（３）の外円周を囲い
、遠心ポンプ手段（４）により射出される温度の上った
潤滑油（１８）を導入する排油囲いわくで、環状の室が
形成されている。（Ｉ５）は外部に配設された油冷却器
であり、排油囲いわ＜ （１４１から出された複数本の
導出管０６）により、高温度の排油が矢印りのように流
通され、熱交換により低温にして複数本の戻し管θプ１
に矢印Ｅのよう送られ、油槽（６）内にＦ方から矢印Ｆ
のように吐出される。Next, (14) is an annular oil drain wall that surrounds the outer circumference of the thrust runner (3) and introduces the heated lubricating oil (18) injected by the centrifugal pump means (4). A chamber is formed. (I5) is an oil cooler installed outside, and high-temperature waste oil is distributed as shown by the arrow through the drain oil enclosure (multiple outlet pipes 06 taken out from 141). The temperature is lowered by heat exchange and multiple return pipes θp1
is sent as shown by arrow E into the oil tank (6) from direction F.
It is discharged as follows.
上記従来の装置において、回転軸（１）の回転によりス
ラストランナ（３）も共に回転し、スラストパッド（５
）に上面の軸受面の油膜を介し支持される。第２図に示
すように、スラストランナ（３）の矢印入方向の回転に
より油膜を形成した油は、円周方向に矢印Ｇのように流
動し、摩擦熱により高温となり一方のスラストパッド（
６）後端から流出し、油がき板０２）によりかき落され
る。この油がき板にがき落された高温油は円周方同速度
成分を失い、油がき板０２）近付の潤滑油（国に混合し
て次のスラストパッド（ｌｉ）の軸受面とスラストラン
ナ（３）とのすき間に前端から引き込まれ、油膜を形成
し円周方向に矢印Ｈのように流動する。In the above conventional device, the rotation of the rotating shaft (1) also rotates the thrust runner (3), and the thrust pad (5) rotates together with the thrust runner (3).
) is supported through the oil film on the upper bearing surface. As shown in Fig. 2, the oil that forms an oil film due to the rotation of the thrust runner (3) in the direction of the arrow flows in the circumferential direction as shown by arrow G, becomes high in temperature due to frictional heat, and is attached to one of the thrust pads (
6) It flows out from the rear end and is scraped off by the oiling plate 02). The high-temperature oil that has been scraped onto the oil-coated plate loses its circumferential constant velocity component and is mixed with the lubricating oil (oil) near the oil-coated plate (02) and is then applied to the bearing surface of the next thrust pad (li) and the thrust runner (3). ) is drawn in from the front end, forming an oil film and flowing in the direction of arrow H in the circumferential direction.
また、隣接するスラストパッド（５）間に出た高温油の
一部は、第１図に示すように、スラストランナ（３）の
遠心ポンプ手段により矢印Ｔのように吸引され、矢印Ｂ
のように射出穴（３ａ）を通りポンプ作用を受は射出さ
れ排油囲いわく（１船内に矢印Ｃのように導入される。In addition, as shown in FIG. 1, a part of the high-temperature oil discharged between adjacent thrust pads (5) is sucked by the centrifugal pump means of the thrust runner (3) as shown by arrow T, and is sucked in as shown by arrow B.
The pumped oil is injected through the injection hole (3a) and introduced into the vessel as shown by arrow C, into the drain tank (1).
この導入された高温油（１８）は油冷却器（１（至）に
通されて冷却され、油槽（６）内に下方がら矢印Ｆのよ
うに吐出し供給され、この作用が循環されていた。This introduced high-temperature oil (18) is cooled by passing through the oil cooler (1), and is discharged downward into the oil tank (6) as shown by arrow F, and this action is circulated. .
従来の装置のスラストパッド（５）囲りの潤滑油θ８）
の油流の状態は、第３図に平面図で示すようになってい
た。一方のスラストパッド（５）上面に油膜を形成し円
周方向に流動し温度上昇した高温油は、矢印Ｇのように
双方のパッド（５）間に出て油かき板（１２）にかき落
される。このかき落された高温油は大部分か油かき板（
１２）の下をくぐって回り込んで他の潤滑油（１８）に
混入し、次のパッド（６）の上面に矢印Ｈのように引き
込まれ油膜を形成する。また、潤滑油（１８）の油流に
は、スラストランナ（３）の回転により誘起されたパッ
ド（う）外周部に沿う旋回流Ｊと、この旋回流のうちパ
ッド（５）間へ流入する油流に、パッド（５）内周部に
沿う旋回流りと、この旋回流のうちパッド＋５１間方向
への油流Ｍ、スラストランナ（３）の内外周速の差によ
り誘起され半径方向油流Ｎ。Lubricating oil around the thrust pad (5) of the conventional device θ8)
The state of the oil flow was as shown in the plan view in Figure 3. The high-temperature oil that forms an oil film on the upper surface of one thrust pad (5) and flows in the circumferential direction and rises in temperature comes out between both pads (5) as shown by arrow G and is scraped onto the oil scraping plate (12). be done. Most of this scraped-off high-temperature oil is removed from the oil scraping plate (
12) and mixes with other lubricating oil (18), and is drawn into the upper surface of the next pad (6) as shown by arrow H, forming an oil film. In addition, the oil flow of the lubricating oil (18) includes a swirling flow J along the outer circumference of the pad (U) induced by the rotation of the thrust runner (3), and a swirling flow J of this swirling flow that flows between the pads (5). In the oil flow, there is a swirling flow along the inner circumference of the pad (5), an oil flow M in the direction between the pad +51 of this swirling flow, and a radial oil flow induced by the difference in the inner and outer circumferential speeds of the thrust runner (3). Flow N.
及び遠心ポンプ手段（４）により吸引される油流Ｐなど
さまざまな流れがあり、このため混とんとした油流とな
り、半径方向成分をほとんど持たない流れとなっていた
。（このような油流となることは、実物大模型による水
流試験及び実機検証試験によって確認されている。）
このため、従来の装置では、双方のスラストパッド（５
）間の潤滑油（１８）は滞留し、一方のパッド（５）上
面から流出した高温油は、油かき板（１２）によってが
き落されても、低温油にはわずがしが混合されず油かき
板（ｊ２）の下をくぐって次のパッド（５）上面に引へ
込まれており、油かき板０２）の効果が十分に生がしき
れず、軸受温度低減効果が不十分であった。There are various flows such as the oil flow P sucked by the centrifugal pump means (4), and the oil flow is therefore chaotic and has almost no radial component. (This kind of oil flow has been confirmed by water flow tests using full-scale models and actual machine verification tests.) For this reason, in conventional equipment, both thrust pads (5
) The lubricating oil (18) remains between the pads (5), and even if the high-temperature oil that flows out from the top surface of one pad (5) is scraped off by the oil scraper plate (12), the lubricating oil (18) remains mixed with the low-temperature oil. The pad passes under the oil scraper plate (j2) and is recessed into the top surface of the next pad (5), so the effect of the oil scraper plate (02) is not fully utilized and the bearing temperature reduction effect is insufficient. there were.
この発明は、スラストランナの遠心ポンプ手段によね射
出された高温油を外部の冷却器に通し、低温になった油
を、戻し管の上端の吐出口から各スラストパッド間に外
周部側から吐出し供給し、各スラストパッド間及びスラ
ストパッドの内周部と油槽の内周側板との間に仕切り板
を設けて上下に仕切り、半径方向に内周側に潤滑油を導
きスラストランナの遠心ポンプ手段に誘引させる案内油
路を形成し、高温油を遠心ポンプ手段により吸引させ、
低温潤滑油がそれぞれ次のスラストパッドの上面に引き
込まれるようにし、軸受の冷却効果が向上され、信頼性
を高めた立て形スラスト軸受装置を提供することを、目
的としている。In this invention, the high temperature oil injected by the centrifugal pump means of the thrust runner is passed through an external cooler, and the cooled oil is discharged from the outer peripheral side between each thrust pad from the discharge port at the upper end of the return pipe. A partition plate is installed between each thrust pad and between the inner periphery of the thrust pad and the inner periphery side plate of the oil tank to separate the lubricating oil from top to bottom, and the centrifugal pump of the thrust runner guides the lubricating oil to the inner periphery in the radial direction. forming a guide oil path to be guided by the means, and causing the high temperature oil to be sucked by the centrifugal pump means;
It is an object of the present invention to provide a vertical thrust bearing device in which low-temperature lubricating oil is drawn into the upper surface of each next thrust pad, the cooling effect of the bearing is improved, and the reliability is increased.
第４図はこの発明の一実施例による立て形スラスト軸受
装置の縦断面図であり、（１）〜（１φ、（＋ａ）、（
３ａ）、 （ｌｌａ）は上記従来装置と同一のもので、
説明は省く。＠ｌ）は油冷却器θ５）からの低温油を供
給する複数本の戻し管で、油槽（６）内にそう人されて
上端部がスラストパッド（５）の外周部側にされている
。FIG. 4 is a longitudinal sectional view of a vertical thrust bearing device according to an embodiment of the present invention, showing (1) to (1φ, (+a), (
3a) and (lla) are the same as the above conventional device,
I'll omit the explanation. @l) is a plurality of return pipes for supplying low-temperature oil from the oil cooler θ5), which are placed in the oil tank (6) and have their upper ends facing the outer circumferential side of the thrust pad (5).
（２２）は各スラストパッド（５）間に油かき板（１２
１の下方高さ位置に水平方向に配置され上下に仕切る複
数の仕切板で、支柱（１１）に固着された取付片（２４
］にボルト翰により取付けられている。（割は各スラス
トパッド（６）の内周部と油槽（６）の内周側板（６ａ
）との間に、仕切板−と同一高さ位置に配置され上下に
仕切る円板状の仕切板で、内周側板（６ａ）に固着され
た取付片彌及μ取付片シ弔に取付はボルト（ハ）により
取付けられている。この仕切板（′２３は円周方向に対
し適宜の数に分制し、組立てを容易にしている。上記仕
切板（２２、（２３）により、スラストランナ（３）の
下面とで、各スジストパッド（６）間に案内油路卸）を
形成している。(22) is an oil scraper plate (12) between each thrust pad (5).
The mounting piece (24) is a plurality of partition plates arranged horizontally at a lower height position of 1 to partition the upper and lower parts, and is fixed to the support column (11).
] is attached with bolts. (The inner peripheral part of each thrust pad (6) and the inner peripheral side plate (6a) of the oil tank (6)
) is a disk-shaped partition plate that is placed at the same height as the partition plate and separates the top and bottom. It is attached with bolts (c). This partition plate ('23) is divided into an appropriate number in the circumferential direction to facilitate assembly.The partition plates (22, (23)) allow each stripe pad to (6) A guide oil passageway is formed between them.
上記一実施例の装置において、各スラストノくラド（５
）上面に油膜を形成し円周方向に流動し、高温になった
潤滑油（１８）は、パッド（５）後端から流出しスラス
トランナ（３）下面に沿った境界ノーを形成する。In the apparatus of the above-mentioned embodiment, each thrust rod (5
) The high temperature lubricating oil (18) forms an oil film on the upper surface and flows in the circumferential direction, flowing out from the rear end of the pad (5) and forming a boundary line along the lower surface of the thrust runner (3).
この高温油は油かき板０２１によりかき落され、スラス
トランナ（３）の遠心ポンプ手段（４）による内周側へ
の吸込み作用により、案内油路ｃ２７１を半径方向に矢
印Ｕのように流動する。これにより、戻し管イ１）から
吐出された低温油は、各案内油路に７）内に誘引されて
導かれ、回転方向に対し次のスラストノくラド（５）上
面に前端側から引へ込まれて油膜を形成し、軸受温度が
低下される。This high-temperature oil is scraped off by the oil scraper plate 021, and flows radially through the guide oil passage c271 in the direction of arrow U due to the suction action toward the inner circumferential side by the centrifugal pump means (4) of the thrust runner (3). . As a result, the low-temperature oil discharged from the return pipe 1) is guided into each guide oil passage 7), and is drawn from the front end to the top surface of the next thrust rod (5) in the direction of rotation. This causes an oil film to be formed and the bearing temperature to drop.
なお、上記実施例では、油かき装置（９）を配設した場
合を示したが、この油から装置（９）を設けてし）ない
場合にも適用でき、冷却効果か向上される。Although the above embodiment shows the case where the oil scraping device (9) is provided, it can also be applied to a case where the oil scraping device (9) is not provided, and the cooling effect is improved.
また、場合によっては、戻し管’（２１＋の回路に補助
用の油ポンプを設けてもよい。In some cases, an auxiliary oil pump may be provided in the circuit of the return pipe' (21+).
以上のように、この発明によれば、各スラストパッド間
及びスラストパッドの内周部と油槽の内周側板との間に
仕切板を設けて上下に仕切り、仕切板の上方にそれぞれ
案内油路を形Ｊｉ１２：Ｌ、各スラストパッドの軸受面
を潤滑した高温油をスラストランナの遠心ポンプ手段に
より案内油路から吸引し、スラストランナの外周側１に
射出し、この射出された高温油を外部の油冷却器に通し
、低温になった油を戻し管により油槽内の各スラストパ
ッドの外周側に吐出し供給するようにしたので、この低
温油が上記系内油路に導入され、軸受の冷却効果が向上
され温度が低下でき、イイ頼性が葛められ、捷た、軸受
を小形化し価格低減することもできる。As described above, according to the present invention, a partition plate is provided between each thrust pad and between the inner peripheral part of the thrust pad and the inner peripheral side plate of the oil tank to partition the oil tank vertically, and the guide oil passages are provided above the partition plate. The high-temperature oil that lubricates the bearing surface of each thrust pad is sucked from the guide oil passage by the centrifugal pump means of the thrust runner and injected onto the outer circumferential side 1 of the thrust runner. The low-temperature oil is passed through the oil cooler and is discharged and supplied to the outer circumference of each thrust pad in the oil tank through the return pipe, so this low-temperature oil is introduced into the oil passage in the system, and the bearing The cooling effect can be improved, the temperature can be lowered, the reliability can be improved, and the bearing can be made smaller and the cost can be reduced.
第１図及び第２図は従来のスラスト軸受装置の縦断面図
及びスラストパッド部の正面断面図、第３図は第２図の
スジストパッド部の油流状態を示す平面図、第４図はこ
の発明の一実施例によるスラスト軸受装置の縦断面図で
ある。
図において、ユ・・・回転軸、３・・・スラストランナ
、４・・・遠心ポンプ手段、５・・・スラストパッド、
６・・・油槽、９・・・油かき装置、１２・・・油かき
根、］、４・・・排油囲いわく、１５・・・油冷却器、
１６・・・導出管、１日・・・潤滑油、２１・・・戻し
管、２２．２３・・・仕切板、２４゜２５・・・取付片
、２６・・・取付はボルト、２７・・・案内油路０
なお、図中同一符号は同−又シま相当部分を示す。1 and 2 are a longitudinal sectional view and a front sectional view of the thrust pad section of a conventional thrust bearing device, FIG. 3 is a plan view showing the oil flow state of the thrust pad section of FIG. 2, and FIG. FIG. 1 is a longitudinal sectional view of a thrust bearing device according to an embodiment of the invention. In the figure, U... Rotating shaft, 3... Thrust runner, 4... Centrifugal pump means, 5... Thrust pad,
6...Oil tank, 9...Oil scraper, 12...Oil scraper, ], 4...Oil drain enclosure, 15...Oil cooler,
16... Outlet pipe, 1st... Lubricating oil, 21... Return pipe, 22.23... Partition plate, 24° 25... Mounting piece, 26... Bolt for installation, 27... ...Guide oil path 0 Note that the same reference numerals in the drawings indicate parts corresponding to the same lines or stripes.
Claims (1)
転軸側に固定されたスラストランナを下方から複数のス
ラストパッドで回転自在に支持しており、これらの各ス
ラストパッドは扇形をなし、円周方向に対し相互が所定
の間隔をあけて配設されてあり、上記スラストランナに
は潤滑油を内円周側から吸引し、外円周側に射出する遠
心ポンプ手段が設けられ、このスラストランナの外円周
を囲って配設された排油囲いわく内に上記射出された潤
滑油を導き、この潤滑油を外部の油冷却器に通して冷却
し複数の戻し管により上記油槽内に吐出し供給するよう
にしたスラスト軸受装置において、上記各スラストパッ
ド間及びスラストパッドの内周部と油槽の内周側板との
間とに水平方向に配設され上下に仕切っており、上記ス
ラストランナの下面とで各スラストパッド間に半径方向
の案内油路を形成する仕切板を備えたことを特徴とする
立て形スラスト軸受装置。 （２）各スラストパッド間には、半径方向に配設されて
いて上部の油かき板をスラストランナの下面に下方から
押圧接触しており、上記スラストパッド上面に油膜を形
成し後端から流出した高温潤滑油をかき落す油かき装置
を備えたことを特徴とする特許請求の範囲第１項記載の
立て形スラスト軸受装置。[Claims] [11] The thrust runner is housed in an oil tank filled with lubricating oil and is fixed to the rotating shaft side, and is rotatably supported from below by a plurality of thrust pads, each of which The thrust pads are fan-shaped and are arranged at a predetermined distance from each other in the circumferential direction. A pump means is provided, which guides the injected lubricating oil into a drain oil enclosure disposed around the outer circumference of the thrust runner, and cools the lubricating oil by passing it through an external oil cooler. In the thrust bearing device, the oil is discharged and supplied into the oil tank through a return pipe, and the upper and lower parts are arranged horizontally between each of the thrust pads and between the inner peripheral part of the thrust pad and the inner peripheral side plate of the oil tank. A vertical thrust bearing device comprising: a partition plate which forms a radial guide oil passage between each thrust pad with the lower surface of the thrust runner. (2) Between each thrust pad, the upper oil scraper plate is arranged in the radial direction and presses into contact with the lower surface of the thrust runner from below, forming an oil film on the upper surface of the thrust pad and flowing out from the rear end. 2. The vertical thrust bearing device according to claim 1, further comprising an oil scraping device for scraping off high-temperature lubricating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57114256A JPS596419A (en) | 1982-06-29 | 1982-06-29 | Vertical type thrust bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57114256A JPS596419A (en) | 1982-06-29 | 1982-06-29 | Vertical type thrust bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS596419A true JPS596419A (en) | 1984-01-13 |
Family
ID=14633221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57114256A Pending JPS596419A (en) | 1982-06-29 | 1982-06-29 | Vertical type thrust bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596419A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297927A (en) * | 1992-01-29 | 1994-03-29 | Hitachi, Ltd. | Vertical shaft type pump |
| JP2008101750A (en) * | 2006-10-20 | 2008-05-01 | Mitsubishi Heavy Ind Ltd | Sliding bearing oil scraper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4850136A (en) * | 1971-10-27 | 1973-07-14 |
-
1982
- 1982-06-29 JP JP57114256A patent/JPS596419A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4850136A (en) * | 1971-10-27 | 1973-07-14 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297927A (en) * | 1992-01-29 | 1994-03-29 | Hitachi, Ltd. | Vertical shaft type pump |
| JP2008101750A (en) * | 2006-10-20 | 2008-05-01 | Mitsubishi Heavy Ind Ltd | Sliding bearing oil scraper |
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