SWASH PLATE HYDRAULIC ROTATING MACHINE

PROBLEM TO BE SOLVED: To retain an oil film for lubrication between a smooth surface and a shoe of a swash plate to prevent generation of abrasion or seizure for a long period of time. SOLUTION: A pedestal part 9A of the shoe 9 includes: an annular seal land part 18 brought into slide-contact with t...

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Bibliographic Details
Main Authors SUZUKI MOTOJI, KOBAYASHI SHUICHI, NAGAI YASUMUTSU, AKITA HIDEKI
Format Patent
LanguageEnglish
Published 17.06.2010
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To retain an oil film for lubrication between a smooth surface and a shoe of a swash plate to prevent generation of abrasion or seizure for a long period of time. SOLUTION: A pedestal part 9A of the shoe 9 includes: an annular seal land part 18 brought into slide-contact with the smooth surface 11A of the swash plate 11 as a hydrostatic bearing, and sealing liquid oil for lubrication between the seal land part and the smooth surface 11A; and a dynamic pressure pad part 19 formed to mount copper alloy in a radially inner area of the seal land part 18, and generating a hydraulic reactive force by the liquid oil between the smooth surface 11A of the swash plate 11 and each shoe 9. Irregularity processing such as shot peening is applied to a surface side of the seal land part 18 of the shoe 9 to form a lot of microscopic concavities and convexities 18A, of which average surface roughness Ra is within a range of 0.5-5.0, to a whole surface. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20080309628