AXIAL-PLUNGER HYDRAULIC MACHINE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: housing has high-pressure and low-pressure passages. The rocking member consists of autonomous working chambers. The chambers are constructed as cylinders with walls of varying section, mounted on the plungers with a guaranteed radial spaced relation, and pressed to the cylinder bases by springs. The contact area of cylinder from the side of the plunger inlet is provided with bearing and deformed collars which are defined by thinning of the part of the cylinder body from the side of its inner wall of rectangular bore. The sides of the bore, cylinder end face, and bearing collar are coupled with the contact area through radiused curves. The deformed collar is defined by the thinning of the cylinder wall of the outer and inner radiused ring bores arranged symmetrically with respect to the common axis. The inner ring bore is conjugated with the bearing collar of the cylinder through the straight part. EFFECT: enhanced efficiency. 2 cl, 3 dwg