СЛІДКУЮЧИЙ ГІДРОПРИВІД З ДИФЕРЕНЦІЮЮЧИМ КОНТУРОМСЛЕДЯЩИЙ ГИДРОПРИВОД С ДИФФЕРЕНЦИРУЮЩИМ КОНТУРОМ

摘要

A fluid power servodrive with differentiating circuit has a pump, drain and pumping lines, hydraulic tank, pressure valve installed on control object, four-way spool hydraulic valve, spool of which interacts with program carrier and through the first spring with the body of hydraulic valve, and a hydraulic cylinder of control object motion. Additionally it has a plunger, throttle, second spring, support and controlled back valves. To the body of hydraulic valve coaxially with the spool a plunger is installed, this directly interacts with program carrier and through the second spring with the spool. The cavity formed by the plunger and the spool through the throttle is connected to drain line to which between the pressure valve and hydraulic tank the back pressure valve is installed, and upstream of the back pressure valve a controlled check valve is installed, control cavity of which is connected to the pumping line.