FIELD: machine building.
SUBSTANCE: invention relates to machine building, particularly to multicylinder rotor-piston machines with cylinders arranged in star or fanwise pattern. Rotary-piston machine consists of housing 1, cover 2, cylinder block 3, with pistons 4, provided with axes 11, central rollers 12 and side rollers 13. Outer ring 14 is mounted in housing 1 and inner ring 15 with tracks 16 for rolling elements 17. Rotor 18 with balancing cavities 19 is installed between rings 16, 17. Rotor 18 outer surface 20 and inner surface 21 are made with eccentricity "e" to provide pistons stroke 4 by value "2e". Inner ring 15 has a guide groove 22 to interact with support rollers 12, and discs 23 for interaction with side rollers 13 are mounted on its side surfaces.
EFFECT: technical result consists in higher machine efficiency and its longer life due to reduced mechanical losses and increased speed.
5 cl, 4 dwg
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