JOINTED DEVICE OF HELICAL ROTOR-DRIVEN HYDRAULIC MACHINE Russian patent published in 2004 - IPC

FIELD: helical rotor-driven hydraulic machine jointed devices engineering. SUBSTANCE: jointed device of helical rotor-driven hydraulic machine has a shaft, a casing, a saddle, finger, two half-inserts and two blocks, through which axial load and torque are transferred to casing from the shaft. At upper portion of casing longitudinal windows with flat walls are made as well as solid axial aperture. At its lower portion perpendicularly to the axis a through radial aperture is made. End portion of shaft is made with spherical surface, front portion of which interacts with spherical surface of the saddle, and back portion of which interacts with spherical surfaces of half-inserts. By means of half-inserts the shaft is pressed to spherical recess of the saddle, which prevents axial displacement of shaft. In windows of the casing two blocks are mounted, which have planes of sliding for interaction with flat walls of casing windows. Shaft and casing are connected to each other through the saddle, as well as through finger, which is mounted immovably with its middle portion in radial aperture of the shaft, and two blocks are moveably mounted on the ends of the finger. EFFECT: increased transferred moment, higher durability and wear resistance of the assembly due to lesser forces of collapse in the connection, higher loading capability of jointed device with guaranteed strength due to increased distance from the point of force purchase, as well due to absence of axial displacement of shaft, which causes vibrations of jointed connection in case if cyclic loads. 2 cl, 3 dwg