초록 ▼

A compliant hydrodynamic fluid film journal bearing for handling high loads. The bearing assembly includes a first thin smooth compliant sheet for facing a shaft, one or more corrugated foils, and a second sheet between the foils and the compliant sheet for supportedly underlying the compliant sheet

A compliant hydrodynamic fluid film journal bearing for handling high loads. The bearing assembly includes a first thin smooth compliant sheet for facing a shaft, one or more corrugated foils, and a second sheet between the foils and the compliant sheet for supportedly underlying the compliant sheet for preventing sagging of the first sheet between ridges of the foils. A foil element is anchored at a position intermediate its ends to the bearing sleeve whereby both ends thereof are unanchored. A pair of radially outer and inner corrugated foils have outer foil ridges which underlie some inner foil ridges and outer foil furrows which underlie others of the inner foil ridges. A bearing assembly includes a plurality of rows of corrugated foil elements wherein ends of foil elements are offset circumferentially from ends of foil elements in adjacent rows symmetrically from the radial centerplane to provide a herringbone pattern effect. At least some ridges on at least one of inner and outer corrugated foils have truncated apex portions.

대표청구항 ▼

[ What is claimed is:] [1.] A compliant hydrodynamic fluid film bearing comprising a housing for receiving a shaft for relative rotational movement therebetween, a bearing assembly adapted to be disposed between said housing and the shaft, said bearing assembly comprising sheet means disposed to sub

[ What is claimed is:] [1.] A compliant hydrodynamic fluid film bearing comprising a housing for receiving a shaft for relative rotational movement therebetween, a bearing assembly adapted to be disposed between said housing and the shaft, said bearing assembly comprising sheet means disposed to substantially surround the shaft and positioned to face the shaft for relative rotational movement therebetween and including at least one first thin smooth sheet which extends at least partially around the shaft and positioned to contact the shaft when the shaft is not rotating and having a radially outer surface, means for resiliently supporting said sheet means, said supporting means comprising at least one foil element disposed between said sheet means and said housing and having a corrugated shape to define a plurality of ridges which are spaced circumferentially of said bearing assembly for resiliently bearing said sheet means, and means supportively underlying said first sheet for preventing sagging of said first sheet between the ridges, said sagging preventing means including at least one second sheet which is disposed between said first sheet and said foil element and having a radially inner surface in contact with said radially outer surface of said first sheet and further having a radially outer surface in contact with said foil element.