Self-centering squeeze film damper bearing

Details Self-centering squeeze film damper bearing Self-centering squeeze film damper bearing

1992-04-16

1993-06-01

Footland, Lenard A.

Bearings

Rotary bearing

Hydraulic or pneumatic bearing support

384117, 384119, 384312, F16C 1703

Patent

active

052153843

ABSTRACT:
A squeeze film damper bearing (100) has the means of automatically centering itself from the force associated with lateral shaft vibration. It utilizes a floating ring (108) positioned between a housing (102) and a cage (106) with O-rings (115, 116, 130, 131) positioned between adjacent parts to maintain proper clearances. Oil is introduced into the clearances to serve as a damping medium. Squeeze film damping action occurs in the clearances when the force associated with lateral shaft vibration is transmitted from the shaft (120) through the radial bearing (114) to the damper oil films. The mating cylindrical surfaces between the flowing ring (108) and housing (102) have a common longitudinal axis 100a which is inclined with respect to the longitudinal shaft centerline 120a by an angle (122) which provides the means for the floating ring (108) to reposition itself so that it can assume a centered position with respect to the housing (102) and the cage (106) when subjected to lateral forces. In this way, the optimum amount of damping can be imparted to the rotor system as the support O-rings (118, 119) deform with time.

REFERENCES:
patent: 4023868 (1977-05-01), Miki
patent: 4092048 (1978-05-01), Bennett, Jr. et al.
patent: 4392751 (1983-07-01), Ida et al.
patent: 4458843 (1984-07-01), Bolner
patent: 4726694 (1988-02-01), McFarlin et al.
patent: 4782919 (1988-11-01), Chalaire et al.
patent: 4952076 (1990-08-01), Wiley et al.
patent: 5044781 (1991-09-01), Werner
patent: 5149206 (1992-09-01), Bobo

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