SPIRAL HYDRAULIC DRIVE Russian patent published in 2022 - IPC F15B15/08 

FIELD: machine building.

SUBSTANCE: invention relates to the field of general machine building, namely to rotary hydraulic drives providing rotation of the actuator due to transformation of axial translational movement of the piston into rotary movement of the shaft. Drive piston consists of several parts connected by screws with sealing elements, and the guide rings installed in the piston are made to provide for the perception of combined loads of the bending-torsion-shear type and single impact loads, wherein bushing with spiral winding is made detachable, fixed in housing on pins, and the double-row radial-thrust roller conical bearing of increased carrying capacity installed in the housing is designed to take up combined loads due to the installed lock split nut, which prevents displacement of the inner rings of the bearing.

EFFECT: drive is capable of taking combined loads without loss of operability, has increased tightness of connection, reliability and repairability.

1 cl, 1 dwg