HYDRAULIC CONTROL UNIT Russian patent published in 2013 - IPC F15B13/00 B64C13/42 

FIELD: machine building.

SUBSTANCE: unit is used to provide wheel turn at running of aircrafts both for direct control and for damping of oscillations at freely oriented wheel turn, as well as to implement damping mode at absence of working fluid pressure in hydraulic power supply channels. Units includes a housing with hydraulic lines connected to supply and discharge lines of a hydraulic system, on which an electrohydraulic power amplifier is installed; hydraulic assemblies are arranged inside the housing and connected to each other and to electrohydraulic power amplifier through a system of hydraulic lines. The above hydraulic assemblies include a check valve of supply hydraulic line, a filter, makeup and safety valves, an electrohydraulic valve, an activation valve, a hydraulic compensator with a cover plate and a spring-loaded piston interacting with spring of shutoff valve of discharge hydraulic line; hydraulic compensator is equipped with an induction sensor presenting information on position of hydraulic compensator piston, and therefore, on possibility of performing damping functions at absence of pressure in hydraulic power supply channels.

EFFECT: enhanced reliability.

1 dwg