BEARING DEVICE AND ROTARY MACHINE

PROBLEM TO BE SOLVED: To provide a bearing device which supplies a sufficient amount of a lubrication oil to a bearing with an oil ring even when a peripheral velocity of a rotary shaft is high and has a wide application range in the peripheral velocity of the rotary shaft.SOLUTION: A bearing device...

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Bibliographische Detailangaben
Hauptverfasser: HAYAFUSA MAKI, TSUJIMURA MANABU, KAWAI YASUSHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a bearing device which supplies a sufficient amount of a lubrication oil to a bearing with an oil ring even when a peripheral velocity of a rotary shaft is high and has a wide application range in the peripheral velocity of the rotary shaft.SOLUTION: A bearing device 9 includes: bearings 9A, 9B which support an axial load and/or a radial load of a rotary shaft 1; a lubrication oil storage tank 10 disposed below the bearings 9A, 9B; and an oil ring 20 which is supported by the rotary shaft 1 and scrapes the lubrication oil stored in the lubrication oil storage tank 10 as the rotary shaft 1 rotates. A contact surface 24 where the oil ring 20 contacts with an outer peripheral surface of the rotary shaft 1 is formed by an oil-repellent material.SELECTED DRAWING: Figure 6 【課題】回転軸の周速が高い場合であっても、オイルリングにより十分な量の潤滑油を軸受へ供給することができ、回転軸の周速に対して広い適用範囲を有する軸受装置を提供する。【解決手段】軸受装置9は、回転軸1の軸方向荷重および/または半径方向荷重を支持する軸受9A,9Bと、軸受9A,9Bの下方に配置される潤滑油貯槽10と、回転軸1に支持され、該回転軸1の回転に伴って潤滑油貯槽10に貯留される潤滑油をかき上げるオイルリング20と、を備える。オイルリング20が回転軸1の外周面と接触する接触面24は、撥油性材料により構成されている。【選択図】図6