[특허]Fluid dampened support having variable stiffness and damping

Fluid dampened support having variable stiffness and damping 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16C-023/08
출원번호	US-0322364 (1994-10-13)
발명자 / 주소	Ide Russell D. (Exeter RI) Zeidan Fouad Y. (Warwick RI)
출원인 / 주소	KMC, Inc. (Providence RI 02)
인용정보	피인용 횟수 : 29 인용 특허 : 0

초록 ▼

A fluid dampened support for a bearing such as a tilt pad bearing or a rolling element bearing such as a ball bearing, needle bearing, roller bearing and the like. The fluid dampened support includes a network of closely spaced beams which act as structural springs which support the outer race of the roller bearing for movement in any direction. The spring rate or constant of these structural springs can be caused to change after a selected amount of deflection. The amount of deflection needed to cause the change in spring rate can be adjusted to suit the particular application. A liquid is provided in the spaces between the beams to dampen movement of the pads. The damping rate can be made to change with movement of the pads. The structure and space between the beams is designed so as to provide virtually any reasonable damping characteristics. By providing such damping characteristics, the bearings are able to limit or damp out the vibrations occurring when the supported member passes through natural frequencies before reaching operating speed. This allows use of the rolling element bearing in high speed equipment such as compressors and turbines.

대표청구항 ▼

A fluid dampened support structure for supporting a bearing for at least radial movement, the support structure comprising a housing formed with a plurality of narrow cuts and grooves so as to define a plurality of circumferentially spaced beam members and a damping fluid filling these spaces formed by the cuts and grooves such that the support structure is fluid dampened; wherein the support structure comprises a plurality of circumferentially spaced pads each having two circumferential ends, each pad being supported on the outer periphery of the support structure by a beam network which acts as a structural spring, the beam network comprising a circumferential beam portion extending from each circumferential end of the pad and a radially extending beam portion extending between the circumferential beam and the outer periphery of the housing, the beam portions together acting as a structural spring having a predetermined spring constant; means for changing the spring constant of the structural spring after the spring has deflected a predetermined amount; means for adjusting the predetermined amount of deflection which occurs before the spring rate changes.

이 특허를 인용한 특허 (29)

Hindle, Timothy; Barber, Tim Daniel; Buchele, Paul, Annular bearing support dampers, gas turbine engines including the same, and methods for the manufacture thereof.
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Grogg, Gary L., Annular spring for a bearing assembly of a gas turbine engine.
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Pettinato, Brian C.; De Choudhury, Pranabesh, Bearing assembly and centering support structure therefor.
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Gerez, Valerio; Jadczak, Edouard, Bearing support with double stiffener.
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Witlicki, Russell B., Bearing system for gas turbine engine.
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Giesler, William L.; Bristol, Brent L.; Grout, Jeffrey D.; Garrod, Todd C.; Tornquist, David B., Bearing with fluid flow bypass.
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Kim, Jongsoo, Compliant bearing.
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Wade, Jonathan; Lubell, Daniel, Compliant foil fluid film radial bearing or seal.
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Ide, Russell D., Flexible coupling.
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Cottrell, Brian; Zalewski, George Jerzy; Kroeger, James, Gas turbine engine rotor tip clearance and shaft dynamics system and method.
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Hindle, Timothy; Hadden, Steven; Davis, Torey, Gas turbine engines including broadband damping systems and methods for producing the same.
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Delgado Marquez, Adolfo; Ertas, Bugra Han; Hallman, Darren Lee; Smith, Walter John, Hermetically sealed damper assembly and methods of assembling same.
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Stout, David E.; Birdi, Balwinder S.; Down, Edward M.; Meacham, Walter L., High speed aerospace generator resilient mount, combined centering spring and squeeze film damper.
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Kang, Sun Goo; Saville, Marshall; Hurley, Keith A., Hydrodynamic journal bearing.
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Scharrer Joseph K. ; Beatty Robert F., Hydrostatically supported foil bearing.
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Smedresman, Adam G.; Von Berg, Kaleb, Integral centering spring and bearing support and method of supporting multiple damped bearings.
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Bischof, Kenneth R.; Lindner, Randy Gerard; Renard, Timothy J.; Richards, II, Thomas Lamar, Integral tilting pad bearing.
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Gardner Willis W., Journal bearing having vibration damping elements.
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Pettinato, Brian C.; De Choudhury, Pranabesh, Method of positioning a bearing assembly and centering support structure therefor.
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Krebs, Philipp; Ziegler, Sebastian, Ring for a bearing, an inner ring, an outer ring, and a bearing.
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Walsh, William S., Squeeze film damper with highly variable support stiffness.
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Walsh, William S, Squeeze film damper with variable support stiffness.
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Meacham, Walter Lee; Bridges, Eric; Margolis, Alan, Three parameter damper anisotropic vibration isolation mounting assembly.
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Ide, Russell D.; Ide, Russell C., Thrust bearing assembly.
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Ide, Russell Douglas, Thrust bearing assembly.
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Ide,Russell Douglas, Thrust bearing assembly.
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New,Nigel Henry, Tilting pad bearing assembly.
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Cottrell, Brian, Vibration isolation mounting assembly.
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Cottrell, Brian; Davis, Porter, Vibration isolation mounting assembly.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Fluid dampened support having variable stiffness and damping 원문보기

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Fluid dampened support having variable stiffness and damping 원문보기

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