HYDRAULIC DRIVE OF DISCRETE ANGULAR MOVEMENT Russian patent published in 2012 - IPC F15B9/03 F15B3/00 F15B11/12 

FIELD: engines and pumps.

SUBSTANCE: drive includes turning step motor connected through gear train to flat rotary valve installed on the axis and arranged between the bottom having pressure and drain channels and the plate having distributing channels connected to limited turning plate hydraulic motor the rotor of which is kinematically connected to the plate of flat valve and provided with the channels connected to distributing channels of this plate and to working chambers of hydraulic motor, which are restricted in radial direction with rotor and stator, in circumferential direction - with the plates installed in rotor and stator, and in axial direction - with the rotor cover plates installed on bearings in the housing on both sides of stator arranged in the housing coaxially to the rotor and fixed against turning about the latter.

EFFECT: overall dimensions and weight is decreased, the shaft moment which is practically unchangeable at all current turning angles is stabilised, range of turning angles of working member is enlarged, value of allowable load on working member is increased, leaks are decreased, and accuracy, sensitivity and reliability of the drive is improved.

10 cl, 2 dwg