ELECTRO-HYDRAULIC BOOSTER OF STEERING MACHINE Russian patent published in 2010 - IPC B64C13/36 

FIELD: transport.

SUBSTANCE: invention relates to aircraft and space engineering, namely to steering machine electro-hydraulic booster. Proposed booster comprises electromechanical converter with its shaft accommodating spring-loaded control crank with two slide-valve plungers attached to crank ends. Plungers are arranged in hollow shafts of pump driven gears. Shaft walls have through radial throttling orifices partially overlapped by slide-valve plungers and communicated with electro-hydraulic booster chambers. Shafts of said pump driven gears are furnished with circular grooves arranged in the zone of through radial throttling orifices. Said through radial throttling orifices have tapered chamfers arranged on the side of circular grooves. Edges of said chamfers are located inside circular grooves. Note here that depth of conical chamfer ℓ and angle α of inclination of chamfer generating line to the axis of through radial throttling orifice are defined subject to the following formulas: where ℓ is chamfer depth; α is angle of inclination of chamfer generating line to the axis of through radial throttling orifice; R_k is circular groove cylindrical surface radius; R_o is radius of shaft driven gear axial orifice cylindrical surface; d is diametre of through radial throttling orifice; H is groove width.

EFFECT: increased sensitivity of steering machine electro-hydraulic booster.

3 dwg