JPS61189399A - Device of preventing waves rising on lubricating oil surface in bearing case - Google Patents

Abstract

PURPOSE:To prevent waves from rising on a lubricating oil in a bearing case, by a method wherein the lower part of the rolling body of a rolling bearing is immersed in lubricating oil, and an interference plate, which shuts off a space in a case on both sides of the rolling bearing, is located on a lubricating oil surface. CONSTITUTION:The lower part of a rolling body 4b of a rolling bearing 4 is immersed in lubricating oil 6 sealed in a bearing case 1, and an interferenced plate 11, which shuts off a space in a case on both sides of the rolling bearing 4, is disposed on the surface of the lubricating oil. This causes the lubricating oil to be enclosed under the interference plate 11, resulting in prevention of waves from rising on the oil surface even if a shaft 5 is rotated.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、軸受ケースの潤滑油面波立ち防止装置に係シ
、特に、中小形ファン用軸受など、油浴潤滑式による転
り軸受の軸受ケースに好適な、軸受ケースの潤滑油面波
立ち防止装置に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a lubricating oil surface ripple prevention device for a bearing case, and in particular to a bearing case for a rolling bearing using oil bath lubrication, such as a bearing for a small or medium-sized fan. The present invention relates to a lubricating oil surface ripple prevention device for a bearing case, which is suitable for use in a bearing case.

〔発明の背景〕[Background of the invention]

まず、従来の油浴潤滑式による転り軸受の軸受ケースを
第３図を参照して説明する。First, a bearing case of a conventional oil bath lubricated rolling bearing will be explained with reference to FIG.

ここに第３図は、従来の軸受ケースにおいて、転り軸受
が回転したときの潤滑油波立ち形状を示す断面図である
。FIG. 3 is a cross-sectional view showing the undulating shape of lubricating oil when a rolling bearing rotates in a conventional bearing case.

第３図に示す軸受ケース１は、例えば中小形ファン等の
回転軸を支持する転り軸受の軸受ケースである。A bearing case 1 shown in FIG. 3 is a bearing case for a rolling bearing that supports a rotating shaft of, for example, a small to medium-sized fan.

図において、２は上側軸受ケース、３は下側軸受ケース
、４は、これら軸受ケースに取付は九転り軸受で、回転
軸５を支持するものであり、４ａは転り軸受内輪、４ｂ
は転動体を示す。In the figure, 2 is an upper bearing case, 3 is a lower bearing case, 4 is a nine-roll bearing attached to these bearing cases and supports the rotating shaft 5, 4a is a rolling bearing inner ring, and 4b is a rolling bearing.
indicates a rolling element.

６は、下側軸受ケース内の油溜シで潤滑油７を貯溜して
いる。潤滑油７の油面は、少なくとも転り軸受４の転動
体４ｂの一部が潤滑油に浸るように、通常は転動体４ｂ
の中心にアシ、油面計９の中心にも合っている。An oil reservoir 6 stores lubricating oil 7 in the lower bearing case. The oil level of the lubricating oil 7 is usually set so that at least a part of the rolling elements 4b of the rolling bearing 4 is immersed in the lubricating oil.
It is also aligned with the center of the oil level gauge 9.

回転軸５が矢印方向に高速回転し転り軸受４が回転する
にともない、転）軸受４Ｆｉ油浴潤滑されるが、運転時
に潤滑油７は、転り軸受４の周囲において、波形８に示
すような波立ちをおこす。このような波形８は、転り軸
受４が回転することによシ必然的に発生するもので１）
避けることができない。As the rotating shaft 5 rotates at high speed in the direction of the arrow and the rolling bearing 4 rotates, the rolling bearing 4Fi is lubricated in an oil bath. It creates ripples like this. Such a waveform 8 is inevitably generated when the rolling bearing 4 rotates.1)
It cannot be avoided.

波立ちが発生すると、転動体４ｂ中心に潤滑油面が無く
潤滑が不安定となシ、軸受ケースｌの回転軸５貫通部か
らの潤滑油の洩れが間層になる。When ripples occur, there is no lubricating oil surface at the center of the rolling element 4b, making the lubrication unstable, and the lubricating oil leaks from the rotating shaft 5 penetrating portion of the bearing case l.

また、潤滑油面が不正確になるので、軸受ケース１に取
付けである油面計９では、外部から適性油面かどうか判
断できないという問題もあった。Furthermore, since the lubricating oil level becomes inaccurate, there is also a problem in that the oil level gauge 9 attached to the bearing case 1 cannot determine from the outside whether the oil level is appropriate.

そこで、この波形８を無くし運転時においても常時水平
油面を保持するようにしなければならない。Therefore, it is necessary to eliminate this waveform 8 and maintain a horizontal oil level at all times even during operation.

本発明に関連する先行技術としては、特開昭５３−２７
７５２号公報記載のものがある３当該公報によれば、軸
受と油槽内油面間を潤滑油受板で仕切ることによプ、自
己冷却効果を高める横軸回転機の軸受装置が開示されて
いるが、潤滑油面の波立ち防止については配慮されてい
なかった。Prior art related to the present invention includes Japanese Patent Application Laid-Open No. 53-27
752 Publication 3 According to this publication, a bearing device for a horizontal shaft rotary machine is disclosed in which the self-cooling effect is enhanced by partitioning the bearing and the oil surface in the oil tank with a lubricating oil receiving plate. However, no consideration was given to preventing ripples on the lubricant surface.

〔発明の目的〕[Purpose of the invention]

本発明は、上記従来技術の問題点を解決するためになさ
れたもので、運転時における軸受ケース内の潤滑油面を
水平に保持しうる軸受ケースの潤滑油面波立ち防止装置
の提供を、その目的としている。The present invention has been made in order to solve the above-mentioned problems of the prior art, and provides a lubricating oil surface ripple prevention device for a bearing case that can maintain the lubricating oil level in the bearing case horizontally during operation. The purpose is

〔発明の概要〕[Summary of the invention]

本発明に係る軸受ケースの潤滑油面波立ち防止装置の構
成は、回転軸を支持する転り軸受の軸受ケースにおける
当該軸受ケース内下部に、少なくとも前記転り軸受の転
動体の一部が潤滑油に浸るように油溜りを設け、前記油
溜りの潤滑油面上に位置して前記転り軸受の両側のケー
ス内空間を遮蔽する干渉板を設けたものである。The structure of the lubricating oil surface ripple prevention device for a bearing case according to the present invention is such that at least a portion of the rolling elements of the rolling bearing is lubricated in a lower part of the bearing case of a rolling bearing that supports a rotating shaft. An oil reservoir is provided so as to be immersed in the lubricating oil surface of the oil reservoir, and interference plates are provided that are positioned on the lubricating oil surface of the oil reservoir and shield the space inside the case on both sides of the rolling bearing.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を、第１図および第２図を参照
して説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

ここに第１図は、本発明の一実施例に係る潤滑油面波立
ち防止装置を備えた軸受ケースの側面図、第２図は、第
１図のＡ−Ａ矢視断面図であシ、図中、第３図と同一符
号のものは、従来技術と同等部分であるから、その説明
を省略する。FIG. 1 is a side view of a bearing case equipped with a lubricating oil surface ripple prevention device according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line A-A in FIG. In the figure, the same reference numerals as in FIG. 3 are the same parts as those in the prior art, so the explanation thereof will be omitted.

第１．２図において、Ｉｆは、潤滑油７０曲面波立ちを
防止するための干渉板で、この干渉板１１は、下側軸受
ケース３にボルトなどで取）付けるもので、油溜シロの
潤滑油７の油面上に位置して、転り軸受４の両側にある
ケース内空間を遮蔽するように装着されている。In Fig. 1.2, If is an interference plate for preventing the curved surface of the lubricating oil 70 from rippling. It is mounted so as to be located above the oil level of the oil 7 and to shield the space inside the case on both sides of the rolling bearing 4.

干渉板１１の板上には、板上に流出する潤滑油７を油ｄ
Ｄａ内に回収するための堰１１ａが形成されている。ま
た、干渉板１１と下側軸受ケース３の内面との間に潤滑
油７を回収するための間隙１２が保たれている。On the plate of the interference plate 11, the lubricating oil 7 flowing onto the plate is coated with oil d.
A weir 11a is formed within Da for collection. Further, a gap 12 is maintained between the interference plate 11 and the inner surface of the lower bearing case 3 for collecting the lubricating oil 7.

このような構成で運転に入シ、回転軸５が回転し、転り
軸受４が回転する場合、潤滑油７は、下側軸受ケース３
の油溜）６と干渉板１１との間に閉じ込められた状態に
あるため、波立ちは発生しない。転り軸受４の内輪４ａ
と転動体４ｂが回転することによる潤滑油の流れは転り
軸受の両側の油溜シロを循環する。When the operation starts with such a configuration, the rotating shaft 5 rotates, and the rolling bearing 4 rotates, the lubricating oil 7 is transferred to the lower bearing case 3.
Because the oil is trapped between the oil sump) 6 and the interference plate 11, no ripples occur. Inner ring 4a of rolling bearing 4
The flow of lubricating oil caused by the rotation of the rolling elements 4b circulates through the oil reservoirs on both sides of the rolling bearing.

ま念、内輪４ａは回転体であシ、干渉板１１は鰻正体な
ので相互間には隙間を設けであるが、この隙間から干渉
板１１上に流出する潤滑油７は、干渉板１１上部に形成
された堰１１鑓によシ案内され、干渉板１１取付周囲の
隙間１２から油溜勺６に流れ込む。Since the inner ring 4a is a rotating body and the interference plate 11 is a real eel, there is a gap between them, but the lubricating oil 7 that flows out onto the interference plate 11 from this gap is transferred to the upper part of the interference plate 11. The oil is guided by the formed weir 11 and flows into the oil sump 6 through the gap 12 around the attachment of the interference plate 11.

本実施例によれば、次に述べる効果がある。According to this embodiment, the following effects are achieved.

１）運転時、潤滑油７の波立ちが無くなるので油面位置
の正しい監視ができる。1) During operation, the lubricating oil 7 does not ripple, allowing accurate monitoring of the oil level position.

２）　波立ちが無いので常に転り軸受４の転動体４ｂの
中心を潤滑し、潤滑が効果的になされる。2) Since there are no waves, the center of the rolling elements 4b of the rolling bearing 4 is always lubricated, and lubrication is effectively achieved.

３）波立ちが無いので波立ちに起因していた軸貫通部か
らの潤滑油洩れが無くなる。3) Since there are no undulations, lubricant oil leakage from the shaft penetrating portion caused by undulations is eliminated.

〔発明の効果〕〔Effect of the invention〕

以上述べ九ように、本実施例によれば、運転時における
軸受ケース内の潤滑油面を水平に保持しうる軸受ケース
の潤滑油面波立ち防止装置を提供することができる。As described above, according to this embodiment, it is possible to provide a lubricating oil surface ripple prevention device for a bearing case that can maintain the lubricating oil level in the bearing case horizontally during operation.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の一実施例に係る潤滑油面波立ち防止
装置を備えた軸受ケースの側面図、第２図は、第１図の
Ａ−Ａ矢視断面図、第３図は、従来の軸受ケースにおい
て、転り軸受が回転したときの潤滑油波立ち形状を示す
断面図である。 １・・・軸受ケース、２・・・上側軸受ケース、３・・
・下側軸受ケース、４・・・転り軸受、４ｍ・・・内輪
、４ｂ・・・転動体、５・・・回転軸、６・・・油溜シ
、７・・・潤滑油、１１・・・干渉板、ｌｌａ・・・堰
、１２・・・間隙。 第　−FIG. 1 is a side view of a bearing case equipped with a lubricating oil surface ripple prevention device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. FIG. 7 is a cross-sectional view showing a rippling shape of lubricating oil when a rolling bearing rotates in a conventional bearing case. 1...Bearing case, 2...Upper bearing case, 3...
・Lower bearing case, 4... Rolling bearing, 4m... Inner ring, 4b... Rolling element, 5... Rotating shaft, 6... Oil sump, 7... Lubricating oil, 11 ...Interference plate, lla...weir, 12...gap. No. -

Claims (1)

【特許請求の範囲】 １、回転軸を支持する転り軸受の軸受ケースにおける当
該軸受ケース内下部に、少なくとも前記転り軸受の転動
体の一部が潤滑油に浸るように油溜りを設け、前記油溜
りの潤滑油面上に位置して前記転り軸受の両側のケース
内空間を遮蔽する干渉板を設けたことを特徴とする、軸
受ケースの潤滑油面波立ち防止装置。 ２、特許請求の範囲第１項記載のものにおいて、干渉板
は、その板上に流出する潤滑油を油溜りに回収するため
の堰を有するとともに、当該干渉板と軸受ケース内面と
の間に潤滑油を逃がす間隙を保持したものである、軸受
ケースの潤滑油面波立ち防止装置。[Scope of Claims] 1. An oil reservoir is provided in a lower part of the bearing case of a rolling bearing that supports a rotating shaft so that at least a part of the rolling elements of the rolling bearing is immersed in lubricating oil; A lubricating oil surface ripple prevention device for a bearing case, characterized in that an interference plate is provided that is positioned on the lubricating oil surface of the oil reservoir and shields the space inside the case on both sides of the rolling bearing. 2. In the product described in claim 1, the interference plate has a weir for collecting lubricating oil flowing onto the plate into an oil reservoir, and there is a weir between the interference plate and the inner surface of the bearing case. A bearing case lubricant surface ripple prevention device that maintains a gap for lubricant to escape.