FOUR-LINE HYDRAULIC DISTRIBUTOR WITH ROTARY FLAT SLIDE VALVE Russian patent published in 2004 - IPC

FIELD: aircraft industry. SUBSTANCE: hydraulic distributor is designed for follow-up control system of aircraft. Proposed hydraulic distributor contains housing, distributing plate with drain throttling channels, support ring, pressure plate, rotary flat slide valve enclosed by lever secured on control shaft and dividing inner space of hydraulic distributor into two spaces. Cylindrical holes are made on end face support surfaces of support ring pointed to each other and on distributing and pressure plates. Said cylindrical holes are arranged opposite to each other, through holes in support ring and blind holes in plated. Coupling unit is made in form of cylindrical pin fitted in said holes for axial displacement and contacting by end faces with corresponding end faces of blind holes of plates. Pin I fitted in holes with guaranteed ring clearance whose value is less than half of ring clearance between surfaces of holes of support ring, pressure plate and outer cylindrical surface of control shaft. EFFECT: improved reliability. 4 dwg