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 cylindrical bearing assembly adapted to be disposed between said housing and the shaft, said bearing assembly including sheet means posi

[ What is claimed is:] [1.] A compliant hydrodynamic fluid film bearing comprising a housing for receiving a shaft for relative rotational movement therebetween, a cylindrical bearing assembly adapted to be disposed between said housing and the shaft, said bearing assembly including sheet means positioned to face the shaft for relative rotational movement therebetween, and means for resiliently supporting said sheet means, said supporting means comprising a plurality of circumferentially extending side-by-side rows each having a plurality of foil elements disposed in end-to-end relation between said sheet means and said housing and each of which foil elements has a corrugated shape to define a plurality of ridges which are spaced circumferentially of said bearing assembly for resiliently bearing said sheet means, ends of said foil elements in one of said rows being offset circumferentially from ends of said foil elements in adjacent ones of said rows symmetrically from the radial centerplane of said bearing assembly to thereby provide a herringbone pattern effect, the bearing further comprising means which is intermediate ends of each of said foil elements for anchoring said foil elements to said housing whereby both ends of each of the foil elements are unanchored.