JPH066749U - Bearing structure of rotating machine - Google Patents
Bearing structure of rotating machineInfo
- Publication number
- JPH066749U JPH066749U JP5283892U JP5283892U JPH066749U JP H066749 U JPH066749 U JP H066749U JP 5283892 U JP5283892 U JP 5283892U JP 5283892 U JP5283892 U JP 5283892U JP H066749 U JPH066749 U JP H066749U
- Authority
- JP
- Japan
- Prior art keywords
- housing
- oil
- hole
- rotating machine
- 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.)
- Pending
Links
Landscapes
- General Details Of Gearings (AREA)
Abstract
(57)【要約】
【目的】外気中のゴミ等が、回転機内に有する潤滑油の
中に混入することがないようにすることにある。
【構成】ハウジングの内部に有する内カバ側に設けられ
た部屋、軸受の内外部に設けられた空間部、および外カ
バ側に設けられた部屋のそれぞれが、大気圧となるよう
に内カバ、外カバ、ハウジングのそれぞれに孔を穿設し
て構成したものである。
(57) [Summary] [Purpose] To prevent dust and the like in the outside air from entering the lubricating oil in the rotating machine. [Composition] A room provided inside the housing on the side of the inner cover, a space provided inside and outside the bearing, and a room provided on the side of the outer cover each have an inner cover so as to have an atmospheric pressure. The outer cover and the housing are formed with holes.
Description
【０００１】[0001]
本考案は、回転機の軸受部分への外気のゴミ等の侵入による軸受の焼き付け防 止や潤滑油の汚濁防止をするための回転機の軸受構造に関するものである。 The present invention relates to a bearing structure of a rotating machine for preventing the seizure of the bearing and the contamination of lubricating oil by the intrusion of dust from the outside air into the bearing portion of the rotating machine.
【０００２】[0002]
従来の回転機における潤滑油構造は図３及び図４に示される。図３はその一例 を示す側面、図４は主要部断面図である。 図３及び図４において、１は軸、２，３は油切りで軸受６を両側から挾むよう にして軸１に嵌着されている。７は締付ナットで、油切り２，３や軸受６がスラ スト方向に動かないようにするために軸１に螺着されている。４は外カバで回転 機の外部側に取付けられ、５は内カバで回転機の内部側に取付けられている。８ は軸受６のハウジングで、ハウジング８に給油管９が取付けられている。11は油 溜タンクで、給油管９より供給された潤滑油は図中の矢印に示すような循路を経 てこのタンク内に戻って来て、最後に油溜タンク11の排油口11a に結合された排 油管12から排出される。10はネジ栓で、回転機外部から内カバ５にまで導かれた 外気が回転機内部へ漏れださないように内カバ５の外周孔を塞いでいる。 次に従来の軸受構造における油潤滑構造について述べる。 給油装置などにより供給された潤滑油は、まずハウジング８に取付けられてい る給油管９に導かれる。給油管９に導かれた潤滑油は、給油管９に設けられたノ ズル孔から軸受６に向って噴射供給される。軸受６に噴射供給された潤滑油は、 油切り２の外周と外カバ４の内周間に設けられた環状空間2aおよび油切り３の外 周と内カバ５の内周間に設けられた環状空間3aにほぼ全量が導かれ、その後各環 状空間2a，3aに導通している排油孔4bと8bおよび排油孔5bと8bから、ハウジング ８に設けられた油溜部8aに導びかれる。 もう一方、外カバ４の内周と油切り２の外周間のわずかな隙間から滲み出た潤 滑油は外カバ４に設けられた環状空間4aに導かれ、その後環状空間4aに導通して いる排油孔4cから油溜部4dに導かれる。 上記と同様に、内カバ５に設けられた環状空間5aに導かれ、その後環状空間5a に導通している排油孔5aから油溜部5dに導かれる。 ハウジングの油溜部8aと外カバの油溜部4dおよび内カバの油溜部5dは互いに貫 通しており、これらの油溜部に導かれた潤滑油は合流して外カバ４に設けられた 排油孔4eから油溜タンク11へと導びかれ、最後にこの油溜タンク11の排油口11a とこれに結合している排油管12を経て回転機外部の給油装置に還流される。 他方、内カバ５に設けられた環状空間5aは回転機外部の外気を導き溜めるため の空気溜め部屋の役割も兼ねた部屋Ｘとなっており、これによって回転機の内カ バ部と外カバ部相互間における空気の圧力差を小さく抑え、軸受部での空気の流 れとそれによって誘起されて生じる油漏れの発生を防止している。 内カバ５の環状空間5aに外気を導くために、ハウジング８の通気孔8xと連通す るように、外カバ４には通気孔4x，内カバ５には通気孔5Xが連通孔として図３に 示すように、複数個設けられている。 Lubricating oil structures in a conventional rotating machine are shown in FIGS. 3 and 4. FIG. 3 is a side view showing an example thereof, and FIG. 4 is a sectional view of a main part. In FIGS. 3 and 4, 1 is a shaft, and 2 and 3 are oil drainers, which are fitted on the shaft 1 so as to sandwich the bearing 6 from both sides. Reference numeral 7 is a tightening nut, which is screwed to the shaft 1 to prevent the oil drainers 2 and 3 and the bearing 6 from moving in the thrust direction. 4 is an outer cover attached to the outside of the rotating machine, and 5 is an inner cover attached to the inside of the rotating machine. Reference numeral 8 denotes a housing of the bearing 6, to which the oil supply pipe 9 is attached. Reference numeral 11 denotes an oil sump tank. The lubricating oil supplied from the oil supply pipe 9 returns to the inside of this tank through a circulation path shown by an arrow in the figure, and finally, the oil discharge port 11a of the oil sump tank 11 The oil is discharged from the oil drain pipe 12 connected to. Reference numeral 10 denotes a screw plug that closes the outer peripheral hole of the inner cover 5 so that the outside air guided from the outside of the rotating machine to the inner cover 5 does not leak into the inside of the rotating machine. Next, the oil lubrication structure in the conventional bearing structure will be described. The lubricating oil supplied by the oil supply device or the like is first guided to the oil supply pipe 9 attached to the housing 8. The lubricating oil guided to the oil supply pipe 9 is injected and supplied toward the bearing 6 from a nozzle hole provided in the oil supply pipe 9. The lubricating oil injected and supplied to the bearing 6 is provided between the outer periphery of the oil drainer 2 and the inner periphery of the outer cover 4 and the annular space 2a provided between the outer periphery of the oil drainer 3 and the inner periphery of the inner cover 5. Almost all the amount is introduced into the annular space 3a, and then the oil drain holes 4b and 8b and the oil drain holes 5b and 8b which are conducted to the annular spaces 2a and 3a are guided to the oil reservoir 8a provided in the housing 8. Be freaked out. On the other hand, the lubricating oil that oozes out from the slight gap between the inner circumference of the outer cover 4 and the outer circumference of the oil drainer 2 is guided to the annular space 4a provided in the outer cover 4 and then conducted to the annular space 4a. The oil is drained from the existing oil drain hole 4c to the oil reservoir 4d. Similar to the above, it is guided to the annular space 5a provided in the inner cover 5, and then to the oil sump portion 5d from the oil drain hole 5a which is continuous with the annular space 5a. The oil sump portion 8a of the housing, the oil sump portion 4d of the outer cover and the oil sump portion 5d of the inner cover penetrate each other, and the lubricating oil guided to these oil sumps merges and is provided on the outer cover 4. It is led from the oil drain hole 4e to the oil reservoir tank 11 and finally returned to the oil supply device outside the rotary machine through the oil drain port 11a of the oil reservoir tank 11 and the oil drain pipe 12 connected to the oil drain port 11a. . On the other hand, the annular space 5a provided in the inner cover 5 serves as a room X that also functions as an air storage room for guiding and storing the outside air outside the rotating machine, which allows the inner cover portion and the outer cover of the rotating machine to be stored. The difference in air pressure between the parts is kept small to prevent the flow of air in the bearings and the resulting oil leakage. In order to communicate the outside air to the annular space 5a of the inner cover 5, the outer cover 4 has a ventilation hole 4x and the inner cover 5 has a ventilation hole 5X so as to communicate with the ventilation hole 8x of the housing 8. As shown in FIG.
【０００３】[0003]
しかし、かような構造におけまる油潤滑構造では次のような欠点がある。 従来の外気の空気溜の部屋は、図４に示したように、内カバの内径側など潤滑 油の循環経路やシール部分に相当する箇所に併設されている。このため、空気溜 めの部屋に長時間回転機外部から外気を導き通気させるているうちに、外気中の ゴミなどか潤滑油の中に混入し、潤滑油の汚濁はもとより潤滑油のシール部分の 荒損や軸受の焼き付けまで引き起こしてしまう。 本考案は、上述した点に鑑みて創案されたもので、その目的とするところは、 外気中のゴミ等が潤滑油の中に混入することがないようにした回転機の軸受構造 を提供するものである。 However, the oil lubrication structure having such a structure has the following drawbacks. As shown in FIG. 4, the conventional chamber for the outside air is installed alongside the inner diameter side of the inner cover, which corresponds to the lubricating oil circulation path and the seal portion. For this reason, while the outside air is being guided from outside the rotating machine to the air reservoir for a long period of time to be ventilated, dust and other foreign matter in the outside air may be mixed into the lubricating oil, causing contamination of the lubricating oil as well as the sealing portion of the lubricating oil. It causes the rough damage and the burning of the bearing. The present invention was devised in view of the above-mentioned points, and an object thereof is to provide a bearing structure for a rotating machine in which dust and the like in the outside air are not mixed in the lubricating oil. It is a thing.
【０００４】[0004]
つまり、その目的を達成するための手段は、ハウジングの内側と外側とを貫通 せしめる第１の孔、およびハウジングの内側と、前記軸受の内側，ハウジングお よび内カバとで形成する空間部とを貫通せしめる第２の孔をハウジングに穿設す ると共に、前記内カバと軸とで形成する部屋と、内カバ外周とを貫通せしめる第 ３の孔を内カバに穿設し、これらそれぞれの孔を連結せしめ、更にハウジングの 外側と、前記軸受の外側，ハウジングおよび外カバとで形成する空間部とを貫通 せしめる第４の孔をハウジングに穿設し、また外カバと軸とで形成する部屋と、 外カバ外周とを貫通せしめる第５の孔を穿設せしめて構成したものである。 That is, the means for achieving the object is to provide the first hole that penetrates the inside and the outside of the housing, and the inside of the housing, and the space formed by the inside of the bearing, the housing and the inside cover. A second hole is formed in the housing so as to penetrate therethrough, and a third hole is formed in the inner cover so as to penetrate the chamber formed by the inner cover and the shaft and the outer periphery of the inner cover. A chamber formed by the outer cover and the shaft, and a fourth hole through which the outer side of the housing and the space formed by the outer side of the bearing, the housing and the outer cover penetrate. And a fifth hole penetrating the outer circumference of the outer cover.
その作用は、次に述べる実施例と併せて説明する。 以下、本考案の一実施例を図面に基づいて詳述する。 The operation will be described in combination with the embodiment described below. An embodiment of the present invention will be described below in detail with reference to the drawings.
【０００５】[0005]
図１は本考案の一実施例を示す側面図、図２は主要部断面図であり、図中、図 ４と同符号のものは同じ機能を有す。なお、本考案による回転機の油潤滑構造に 関しては、図４の従来の回転機の軸受構造について記述した油潤滑方式と全く同 一のため、その記述を割愛する。 図１及び図２において、ハウジング８の内側Ａと外側Ｂとを貫通せしめる第１ の孔d1、およびハウジング８の内側Ａと軸受６の内側，ハウジング８および内カ バ５とで形成する空間部αとを貫通せしめる第２の孔d2をハウジングに穿設する と共に、内カバ５と軸１とで形成する部屋Ｘと、内カバ５外周とを貫通せしめる 第３の孔d3を内カバ５に穿設し、これらそれぞれの孔をパイプ13で連結せしめ更 にハウジング８の外側Ｂと、軸受６の外側，ハウジング８および外カバ４とで形 成する空間部分βとを貫通せしめる第４の孔d4をハウジング８に穿設し、また外 カバ４と軸１とで形成する部屋Ｙと、外カバ４外周とを貫通せしめる第５の孔d5 を穿設せしめて構成したものである。 なお、実施例では孔d1，d2，d3のみをパイプ接続しているが、d4，d5もパイプ 接続して一端を外気に出すこともある。 次にその作用について説明する。 回転機の内部冷却風によって、回転機の内部( 内カバ５側）と外部（外カバ４ 側）との間に空気圧差が生じる。しかし、内カバ５に設けた孔d3とハウジング８ に設けた孔d2は、大気と連通する孔d1とパイプ13よって連通されているので、大 気圧となり、空気圧差が生じない。また、外カバ４側の軸受６近傍の圧力も、孔 d4，d5によって大気圧となっているため、軸受６近傍の空気圧差がなくなり、軸 受潤滑油およびそのミストの回転機内部への漏れが防止される。 FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is a sectional view of a main part. In the figure, the same reference numerals as those in FIG. 4 have the same functions. The oil lubrication structure of the rotating machine according to the present invention is completely the same as the oil lubrication method described for the conventional bearing structure of the rotating machine of FIG. 4, and therefore the description thereof will be omitted. 1 and 2, a first hole d1 for penetrating the inner side A and the outer side B of the housing 8 and a space formed by the inner side A of the housing 8 and the inner side of the bearing 6, the housing 8 and the inner cover 5. A second hole d2 for penetrating α and a third hole d3 for penetrating the chamber X formed by the inner cover 5 and the shaft 1 and the outer periphery of the inner cover 5 are formed in the inner cover 5. A fourth hole formed by drilling and connecting the respective holes with a pipe 13 and penetrating an outer side B of the housing 8 and a space portion β formed by the outer side of the bearing 6, the housing 8 and the outer cover 4. The housing 8 is provided with d4, and the chamber Y formed by the outer cover 4 and the shaft 1 is provided with a fifth hole d5 for penetrating the outer periphery of the outer cover 4. In the embodiment, only the holes d1, d2, d3 are pipe-connected, but d4, d5 may also be pipe-connected to expose one end to the outside air. Next, the operation will be described. The cooling air inside the rotating machine causes an air pressure difference between the inside (the inner cover 5 side) and the outside (the outer cover 4 side) of the rotating machine. However, since the hole d3 provided in the inner cover 5 and the hole d2 provided in the housing 8 are communicated with the hole d1 communicating with the atmosphere by the pipe 13, the pressure becomes atmospheric pressure and no air pressure difference occurs. The pressure near the bearing 6 on the outer cover 4 side is also atmospheric pressure due to the holes d4 and d5, so there is no air pressure difference near the bearing 6, and the bearing lubricating oil and its mist leaks into the rotating machine. Is prevented.
【０００６】[0006]
以上説明した如く本考案によれば、回転機内部と外部との空気圧差がなくなっ たので、これまで軸受に供給される潤滑油およびそのミストが回転機内部に漏れ ていたものが防止できるようになった。 As described above, according to the present invention, since the air pressure difference between the inside and outside of the rotating machine is eliminated, the lubricating oil and its mist supplied to the bearing can be prevented from leaking inside the rotating machine. became.
【０００７】[0007]
【図１】図１は本考案の一実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of the present invention.
【図２】図２は図１の主要部断面図である。FIG. 2 is a sectional view of a main part of FIG.
【図３】図３は従来の一例を示す側面図である。FIG. 3 is a side view showing a conventional example.
【図４】図４は図３の主要部断面図である。FIG. 4 is a sectional view of a main part of FIG.
【０００８】[0008]
【符号の説明】 １ 軸 ２ 油切り ３ 油切り ４ 外カバ ５ 内カバ ６ 軸受 ７ 締付ナット ８ ハウジング ９ 給油管 10 ネジ栓 11 油溜タンク 12 排油管 13 パイプ Ｘ 部屋 Ｙ 部屋 d1 第１の孔 d2 第２の孔 d3 第３の孔 d4 第４の孔 d5 第５の孔 α 空間部 β 空間部[Explanation of symbols] 1 shaft 2 oil remover 3 oil remover 4 outer cover 5 inner cover 6 bearing 7 tightening nut 8 housing 9 oil supply pipe 10 screw plug 11 oil sump tank 12 oil discharge pipe 13 pipe X room Y room d1 first Hole d2 Second hole d3 Third hole d4 Fourth hole d5 Fifth hole α space part β space part
Claims (1)
ジクグと、このハウジングの内側に有する内カバと、ハ
ウジングの外側に有する外カバとをそれぞれ備えた回転
機の軸受構造において、前記ハウジングの内側と外側と
を貫通せしめる第１の孔、およびハウジングの内側と、
前記軸受の内側，ハウジングおよび内カバとで形成する
空間部とを貫通せしめる第２の孔をハウジングに穿設す
ると共に、前記内カバと軸とで形成する部屋と、内カバ
外周とを貫通せしめる第３の孔を内カバに穿設し、これ
らそれぞれの孔を連結せしめ、更にハウジングの外側
と、前記軸受の外側，ハウジングおよび外カバとで形成
する空間部とを貫通せしめる第４の孔をハウジングに穿
設し、また外カバと軸しで形成する部屋と、外カバ外周
とを貫通せしめる第５の孔を穿設せしめて構成したこと
を特徴とする回転機の軸受構造。1. A bearing structure for a rotating machine, comprising: a housing having an outer periphery of a bearing fitted to a shaft; an inner cover having an inner side of the housing; and an outer cover having an outer side of the housing. A first hole for penetrating the inside and the outside of the housing, and the inside of the housing;
A second hole is formed in the housing for penetrating the space formed by the inside of the bearing, the housing and the inner cover, and the chamber formed by the inner cover and the shaft and the outer periphery of the inner cover are penetrated. A third hole is formed in the inner cover, these holes are connected to each other, and a fourth hole is formed to penetrate the outside of the housing and the space formed by the outside of the bearing, the housing and the outer cover. A bearing structure for a rotating machine, characterized in that a chamber is formed in the housing, and the chamber is formed by being axially aligned with the outer cover, and a fifth hole is formed so as to penetrate the outer periphery of the outer cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5283892U JPH066749U (en) | 1992-07-03 | 1992-07-03 | Bearing structure of rotating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5283892U JPH066749U (en) | 1992-07-03 | 1992-07-03 | Bearing structure of rotating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH066749U true JPH066749U (en) | 1994-01-28 |
Family
ID=12925995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5283892U Pending JPH066749U (en) | 1992-07-03 | 1992-07-03 | Bearing structure of rotating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011020219A (en) * | 2009-07-16 | 2011-02-03 | Denso Wave Inc | Wrist device of robot |
| WO2014046999A1 (en) * | 2012-09-19 | 2014-03-27 | Siemens Industry, Inc. | Drain hose connector with breather valve |
-
1992
- 1992-07-03 JP JP5283892U patent/JPH066749U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011020219A (en) * | 2009-07-16 | 2011-02-03 | Denso Wave Inc | Wrist device of robot |
| WO2014046999A1 (en) * | 2012-09-19 | 2014-03-27 | Siemens Industry, Inc. | Drain hose connector with breather valve |
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