FIELD: machine building.
SUBSTANCE: oil scraper device of cylinder-and-piston group, the piston groove of which has oil scraper ring and radial multiangular expander, and inside the piston there located is elastic element in the form of flat plate with flexible elastic lobes made in its circumferential direction and passing through the through holes of piston to the space after the ring and rigidly attached to radial multiangular expander; according to invention, on upper head of piston-rod, along piston-rod axis, in its rolling plane there rigidly installed is cam contacting lower surface of flat plane of elastic element.
EFFECT: improving operating reliability and service life of oil scraper device.
5 dwg
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