DIRECT-ACTION PROPORTIONAL HYDRAULIC CONTROL VALVE WITH COORDINATE CONTROL Russian patent published in 2024 - IPC E21D23/16 F15B13/44 F01L15/00 

FIELD: machine building.

SUBSTANCE: invention relates to direct-action proportional hydraulic control valve with coordinate control. Distributor comprises housing with front and rear covers. It also comprises a sleeve installed inside the housing with a spool coaxially placed in it, which is controlled by a stepper motor through a screw pair on one side and resting on a spring-loaded pusher on the other side. On one side, a spring-loaded pusher resting on the left end of the spool passes through a hole in the rear cover. On the other side, the spring-loaded pusher is located in the sensitivity zone of the optical sensor fixed in the cover of the sensor located on the side of the rear cover. In the front cover there is a seat for the screw pair nut. Shaft of the stepper motor is connected by means of a coupling to the rotating screw of the screw pair. Stepper motor is located in the transmission housing with the electronics unit installed on it, containing a battery of supercapacitors for the spool valve return to the neutral position.

EFFECT: improved dynamic and static characteristics of the device.

1 cl, 2 dwg