Гідропривод для незалежного від навантаження управління витратою

Abstract

A hydro-drive in which at right side of spool additional end is provided, and tail element with smaller diameter that forms with the body of the valve a chamber of tail element restricted by right end and connected through additional throttle to discharge line, between the main end of the load chamber and spool additional end of the load chamber is arranged, in the tail element a plunger is placed, this forms with the spool a control chamber restricted by right end and connected to the load chamber, and the springy chamber restricted by the left end and connected through radial openings to the chamber of tail element. The distance between the left and the right ends of the plunger is smaller than distance between the right end of the control chamber and axis of radial openings by value not smaller than half of diameter of radial openings but larger than distance between the left end of the springy chamber and axis of radial openings by value not smaller than half of diameter of radial openings. The distance between the right and the additional end of the spool is larger than distance between additional end of the load chamber and the right end of the chamber of tail element by value not smaller than diameter of radial openings, distance between the right end of the spool and axis of radial openings is larger than distance between additional end of the load chamber and right end of the chamber of tail element by value not smaller than half of diameter of radial openings. The springy chamber is connected through the spool with axial channel to discharge line, total through capacity of radial openings exceeds conductivity of additional throttle, load line in neutral position of hydraulic control valve is connected to sink.