TWO-SPEED MANUAL DRIVE OF SHUT-OFF VALVES Russian patent published in 2018 - IPC F16K31/00 F16H3/54 F16H63/30 

FIELD: machine engineering.

SUBSTANCE: two-gear manual drive of shut-off valves comprises a housing (1), a cover (2), a planetary mechanism including a crown wheel (3), satellites (4), the axes of satellites (5), a carrier (6), and a central shaft-gear (7), a gear switch consisting of a central shaft-gear flange (8) with holes, which number is equal to the number of satellites (4), and the heads of satellite axles (9), which sizes correspond to the sizes of flange (8) holes, a gear switch lock (10), a flywheel (11), and a sliding bearing (12). Simplified design of the drive and reduction of its axial size and mass is achieved by designing the gear selector in the form of a narrow flange of the central shaft-gear (8) with holes and used as gear switch elements of heads of satellite axes (9), as well as by providing the lock of the gear switch position (10) in the form of one open elastic ring located in the circular groove of the carrier (6) of the planetary mechanism.

EFFECT: increased efficiency.

2 cl, 3 dwg