JPS6318832Y2 - - Google Patents
Info
- Publication number
- JPS6318832Y2 JPS6318832Y2 JP1982073459U JP7345982U JPS6318832Y2 JP S6318832 Y2 JPS6318832 Y2 JP S6318832Y2 JP 1982073459 U JP1982073459 U JP 1982073459U JP 7345982 U JP7345982 U JP 7345982U JP S6318832 Y2 JPS6318832 Y2 JP S6318832Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing member
- supply hole
- lubricating oil
- oil pocket
- bearing
- 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.)
- Expired
Links
- 239000010687 lubricating oil Substances 0.000 claims description 25
- 239000003921 oil Substances 0.000 claims description 22
- 239000002184 metal Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- 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
- F16C33/1045—Details of supply of the liquid to the bearing
Description
【考案の詳細な説明】
本案は、従来から一般に汎用されている各種回
転機械の回転軸を支承するジヤーナル軸受に関す
るものである。[Detailed Description of the Invention] The present invention relates to a journal bearing that supports the rotating shaft of various rotating machines that have been commonly used in the past.
スリーブ形ジヤーナル軸受における従来例を第
１図および第２図によつて説明すると、上下に２
分割される上側の軸受部材即ち上メタル１と下側
の軸受部材即ち下メタル２により構成され、負荷
は下メタル２で受け、上メタル１は位置決めの役
割をなし、潤滑油は、供給孔３より供給され、図
示省略した回転軸即ちロータが矢示方向に回転す
ることにより、ａ→ｂの経路を経る間に粘性ポン
プ作用により圧力上昇し、下メタル摺動面４の負
荷面入口Ａに流入する。さらに、この潤滑油は、
第３図に示すように負荷を支えるのに必要な圧力
まで上昇した後、潤滑油の蒸気圧まで低下しキヤ
ビテーシヨンを呈し、負荷面終端Ｂより上メタル
側に排出される。従つて、大気圧よりも低い潤滑
油がＣのように下メタル２から上メタル１に流入
し、上メタル摺動面５ではいわゆる負圧状態にな
り、特に、サイドシール６がついている軸受で
は、気密保持が良いために負圧状態が定常的に保
持され、供給孔３との間に大きな圧力差が生じ、
通常のａの流れ以外にロータの回転方向に遡う流
れｄが誘起され、上メタル摺動面５の中央部をく
り抜いて形成したオイルポケツト７に潤滑油が充
満することになる。このオイルポケツト７は、本
来上メタル摺動面５における摩擦損失を低減すべ
く、潤滑油が溜らずかつ剪断速度を小さくするよ
うにしたものであつて、前記のように、この部分
に潤滑油が充満すると、潤滑油の剪断流れに伴う
摩擦損失が誘発され、オイルポケツト７の効果が
無くなり、この種軸受を使用している回転機械の
機械効率を下げることになつて、好ましくない事
態になる。 A conventional example of a sleeve type journal bearing is explained with reference to Figs. 1 and 2.
It is composed of an upper bearing member, that is, upper metal 1, and a lower bearing member, that is, lower metal 2, which are divided.Lower metal 2 receives the load, upper metal 1 plays a positioning role, and lubricating oil is supplied to supply hole 3. When the rotating shaft (not shown), that is, the rotor, rotates in the direction of the arrow, the pressure increases due to the viscous pumping action during the path from a to b, and the pressure increases at the load surface inlet A of the lower metal sliding surface 4. Inflow. Furthermore, this lubricant
As shown in FIG. 3, after the pressure rises to the level required to support the load, it drops to the vapor pressure of the lubricating oil, exhibits cavitation, and is discharged from the end B of the load surface to the upper metal side. Therefore, lubricating oil lower than atmospheric pressure flows from the lower metal 2 to the upper metal 1 as shown in C, creating a so-called negative pressure state on the upper metal sliding surface 5, especially in bearings with side seals 6. , Due to good airtightness, a negative pressure state is maintained steadily, and a large pressure difference occurs between the supply hole 3 and the supply hole 3.
In addition to the normal flow a, a flow d going back in the rotational direction of the rotor is induced, and the oil pocket 7 formed by hollowing out the center of the upper metal sliding surface 5 is filled with lubricating oil. This oil pocket 7 is originally designed to prevent lubricating oil from accumulating and to reduce the shearing rate in order to reduce friction loss on the upper metal sliding surface 5, and as mentioned above, lubricating oil is placed in this portion. When the bearing is full, friction loss is induced due to the shear flow of lubricating oil, which makes the oil pocket 7 ineffective and reduces the mechanical efficiency of rotating machinery that uses this type of bearing, which is an undesirable situation. .
本案は、従来のジヤーナル軸受における前記し
たような難点を解消する考案に係り、回転軸を支
承した上、下側軸受部材を有し、前記上側軸受部
材に潤滑油の供給孔を前記下側軸受部材の負荷面
入口側寄りに設け、前記供給孔と前記負荷面入口
間の前記上側軸受部材の支承面に潤滑油導入用の
オイルポケツトを配設し、前記上側軸受部材の支
承面における前記下側軸受部材の負荷面終端側寄
りに配設された摩擦低減用のオイルポケツトと前
記供給孔間に、軸方向に指向された供給潤滑油の
逆流阻止用の堰を設けた点に特徴を有するもので
あつて、その目的とする処は、供給孔から導入さ
れる潤滑油が支承した回転軸の回転方向に遡つて
流入するのを阻止し、軸受効率を向上せしめたジ
ヤーナル軸受を供する点にある。 The present invention relates to an idea to solve the above-mentioned difficulties in conventional journal bearings, and includes an upper and lower bearing member supporting a rotating shaft, and a lubricating oil supply hole is provided in the upper bearing member to the lower bearing member. An oil pocket for introducing lubricating oil is provided on the support surface of the upper bearing member between the supply hole and the load surface inlet of the member, and an oil pocket is provided closer to the load surface inlet side of the member, and an oil pocket for introducing lubricating oil is provided on the support surface of the upper bearing member between the supply hole and the load surface inlet. A feature is that a weir for preventing backflow of supplied lubricating oil oriented in the axial direction is provided between the oil pocket for reducing friction disposed near the end of the load surface of the side bearing member and the supply hole. The purpose of this is to prevent lubricating oil introduced from the supply hole from flowing backward in the direction of rotation of the supported rotary shaft, thereby providing a journal bearing with improved bearing efficiency. be.
本案は、前記した構成になつており、支承して
している回転軸の回転によつて上側の軸受部材の
支承面部が負圧状態になつても、供給孔から導入
された潤滑油は、堰によつて回転軸の回転方向に
遡う逆流入が阻止され、回転方向に沿う下側軸受
部材の負荷面入口側へ導入されるため、堰を介し
て設けられている摩擦低減用オイルポケツトの機
能が確保され、潤滑油の逆流によつて生ずる摩擦
損失がなく、軸受機能が著しく向上される。 The present invention has the above-mentioned configuration, and even if the support surface of the upper bearing member becomes under negative pressure due to the rotation of the supported rotary shaft, the lubricating oil introduced from the supply hole will The weir prevents the reverse inflow in the direction of rotation of the rotating shaft, and the oil is introduced into the inlet side of the load surface of the lower bearing member along the direction of rotation, so the friction-reducing oil pocket provided through the weir The function of the bearing is ensured, there is no friction loss caused by backflow of lubricating oil, and the bearing function is significantly improved.
以下、本案の実施例を図示について説明する。
第４図および第５図に本案の第１実施例を示して
おり、この実施例の軸受部材は、上下に２分割さ
れる上側の軸受部材即ち上メタル１１と下側の軸
受部材即ち下メタル１２により構成され、図示省
略した回転軸が前記軸受部材で支承されて矢示方
向に回転されるようになつており、上側の軸受部
材１１に潤滑油の供給孔１３を下側の軸受部材１
２の負荷面入口Ａ側寄りに貫通させて設け、該供
給孔１３の内端と前記負荷面入口Ａ間の軸受部材
における支承面側には、供給孔１３より導入され
た潤滑油が回転軸の回転方向（図示左回転）に沿
つてａ→ｂの流れを生じ易くする潤滑油導入用の
オイルポケツト１５を配設し、上側の軸受部材１
１の支承面における下側軸受部材１２の負荷面終
端Ｂ側寄りに配設された摩擦低減用のオイルポケ
ツト１７と供給孔１３間に、軸方向に指向された
堰１８を設け、該堰１８は、適宜の長さにかつオ
イルポケツト１７の幅全長にわたつて設けられ、
また、該堰８の内径寸法は上側の軸受部材１１の
内径寸法と同じか僅かに大き目に形成して、供給
孔１３から導入された潤滑油が第４図に示す回転
軸の回転方向（左回転）に遡う流れd′を生じない
ようにしている。なお、第５図に示す１６，１６
はサイドシールである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
4 and 5 show a first embodiment of the present invention, and the bearing member of this embodiment is divided into two parts: an upper bearing member, that is, an upper metal 11, and a lower bearing member, that is, a lower metal. 12, a rotating shaft (not shown) is supported by the bearing member and rotated in the direction of the arrow.The upper bearing member 11 is provided with a lubricating oil supply hole 13, and the lower bearing member 1 is provided with a lubricating oil supply hole 13.
The lubricating oil introduced from the supply hole 13 is provided on the support surface side of the bearing member between the inner end of the supply hole 13 and the load surface entrance A of the rotary shaft. An oil pocket 15 for introducing lubricating oil that facilitates the flow from a to b along the rotation direction (left rotation in the figure) is provided, and the upper bearing member 1
A weir 18 oriented in the axial direction is provided between the supply hole 13 and the oil pocket 17 for reducing friction, which is disposed closer to the end B side of the load surface of the lower bearing member 12 on the bearing surface of the lower bearing member 12. is provided at an appropriate length and over the entire width of the oil pocket 17,
In addition, the inner diameter of the weir 8 is formed to be the same as or slightly larger than the inner diameter of the upper bearing member 11, so that the lubricating oil introduced from the supply hole 13 flows in the direction of rotation of the rotating shaft (left) as shown in FIG. This prevents the flow d′ that goes back to the rotation) from occurring. In addition, 16, 16 shown in FIG.
is a side seal.
第４図および第５図に示した第１実施例は、前
記したような構造になつているので、このジヤー
ナル軸受にて支承されている図示省略した回転軸
が第４図に示す矢示方向に回転（図示左回転）す
ると、前述のように上側の軸受部材１１の支承面
側に設けたオイルポケツト１７内が負圧状態とな
り、その負圧によつて供給孔１３から導入された
潤滑油が第４図に示す回転軸の回転方向に遡う逆
方向への流れd′を生じさせるようになるが、この
流れd′は、堰１８によつて略阻止されるので、上
側の軸受部材１１の支承面における機能、特にオ
イルポケツト１７の機能が良好に発揮されるとと
もに、供給孔１３から導入された潤滑油は、オイ
ルポケツト１５により回転軸の回転方向（第４図
の左回転）に沿う流れａ→ｂとなつて、良好な潤
滑機能を発揮することになり、潤滑油の逆流ｄに
よつて生ずる従来の摩擦損失が殆んどなく、軸受
機能が著しく向上される。 The first embodiment shown in FIGS. 4 and 5 has the above-described structure, so that the rotary shaft (not shown) supported by this journal bearing is oriented in the direction of the arrow shown in FIG. When the oil pocket 17 provided on the bearing surface side of the upper bearing member 11 is rotated to the right (left rotation in the figure), as described above, the inside of the oil pocket 17 provided on the bearing surface side of the upper bearing member 11 becomes in a negative pressure state, and the lubricating oil introduced from the supply hole 13 is caused by the negative pressure. generates a flow d' in the opposite direction to the direction of rotation of the rotating shaft shown in FIG. 4, but this flow d' is substantially blocked by the weir 18, so that the upper bearing member The function of the bearing surface 11, especially the function of the oil pocket 17, is well exhibited, and the lubricating oil introduced from the supply hole 13 is directed by the oil pocket 15 in the direction of rotation of the rotary shaft (clockwise rotation in Fig. 4). As the flow changes from a to b, a good lubrication function is exhibited, and the conventional friction loss caused by the backflow d of lubricating oil is almost eliminated, and the bearing function is significantly improved.
また、第６図および第７図に本案の第２実施例
を示しており、上側の軸受部材２１に設けた供給
孔１３、オイルポケツト１５、オイルポケツト１
７および堰１８は第４図に示した実施例と同様な
構成になつており、支持環２２1の内面にピボツ
ト２２2を介しパツド２２3を乗せ、負荷に応じて
パツド２２3が傾くことができる下側の軸受部材
２２の構成になつているとともに、第７図に示す
ように上側の軸受部材２１と下側の軸受部材２２
の両側に別体のサイドシール２６，２６を配設し
た構造について第４図に示した第１実施例のもの
と相違し、テイルテイングパツト形軸受機構にな
つている。この第２実施例においても第４図に示
した第１実施例の特徴とする構成を具備している
ので、同様な作用効果を奏し得るものである。 6 and 7 show a second embodiment of the present invention, in which a supply hole 13, an oil pocket 15, and an oil pocket 1 provided in the upper bearing member 21 are shown.
7 and the weir 18 have the same structure as the embodiment shown in FIG. 4, and a pad 22 3 is placed on the inner surface of the support ring 22 1 via a pivot 22 2 so that the pad 22 3 tilts according to the load. The structure of the lower bearing member 22 is such that the upper bearing member 21 and the lower bearing member 22 can be
This structure differs from that of the first embodiment shown in FIG. 4 in that separate side seals 26, 26 are disposed on both sides of the structure, and the structure is a tailing part type bearing mechanism. Since this second embodiment also has the characteristic structure of the first embodiment shown in FIG. 4, it can achieve similar effects.
第１図は従来のジヤーナル軸受を示す断面図、
第２図は第１図の−断面図、第３図は第１図
の軸受内部におけるゲージ圧力の説明図、第４図
は本案の第１実施例を示す断面図、第５図は第４
図の−断面図、第６図は本案の第２実施例を
示す断面図、第７図は第６図の−断面図であ
る。
１１，２１：上側の軸受部材、１２，２２：下
側の軸受部材、１３：供給孔、１５：オイルポケ
ツト、１７：オイルポケツト、１８：堰、Ａ：負
荷面入口。
Figure 1 is a sectional view showing a conventional journal bearing.
2 is a cross-sectional view of FIG. 1, FIG. 3 is an explanatory diagram of the gauge pressure inside the bearing shown in FIG. 1, FIG. 4 is a sectional view showing the first embodiment of the present invention, and FIG.
FIG. 6 is a cross-sectional view showing a second embodiment of the present invention, and FIG. 7 is a cross-sectional view of FIG. 6. 11, 21: upper bearing member, 12, 22: lower bearing member, 13: supply hole, 15: oil pocket, 17: oil pocket, 18: weir, A: load surface inlet.
Claims (1)
記上側軸受部材に潤滑油の供給孔を前記下側軸受
部材の負荷面入口側寄りに設け、前記供給孔と前
記負荷面入口間の前記上側軸受部材の支承面に潤
滑油導入用のオイルポケツトを配設し、前記上側
軸受部材の支承面における前記下側軸受部材の負
荷面終端側寄りに配設された摩擦低減用のオイル
ポケツトと前記供給孔間に、軸方向に指向された
供給潤滑油の逆流阻止用の堰を設けたことを特徴
とするジヤーナル軸受。 The upper bearing member has upper and lower bearing members supporting a rotating shaft, and the upper bearing member is provided with a supply hole for lubricating oil closer to the load surface inlet side of the lower bearing member, and the supply hole is provided between the supply hole and the load surface inlet. An oil pocket for introducing lubricating oil is provided on the bearing surface of the upper bearing member, and an oil pocket for reducing friction is provided on the bearing surface of the upper bearing member closer to the terminal end of the load surface of the lower bearing member. A journal bearing characterized in that a weir for preventing backflow of supplied lubricating oil oriented in the axial direction is provided between the supply hole and the supply hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982073459U JPS58177621U (en) | 1982-05-21 | 1982-05-21 | journal bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982073459U JPS58177621U (en) | 1982-05-21 | 1982-05-21 | journal bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58177621U JPS58177621U (en) | 1983-11-28 |
| JPS6318832Y2 true JPS6318832Y2 (en) | 1988-05-26 |
Family
ID=30082967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982073459U Granted JPS58177621U (en) | 1982-05-21 | 1982-05-21 | journal bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58177621U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH053773Y2 (en) * | 1985-06-27 | 1993-01-29 | ||
| JP6304471B2 (en) * | 2012-07-26 | 2018-04-04 | 三菱日立パワーシステムズ株式会社 | Bearing device and rotating machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156255A (en) * | 1976-06-21 | 1977-12-26 | Hitachi Ltd | Vibration damping bearing |
-
1982
- 1982-05-21 JP JP1982073459U patent/JPS58177621U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156255A (en) * | 1976-06-21 | 1977-12-26 | Hitachi Ltd | Vibration damping bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58177621U (en) | 1983-11-28 |
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