Hydraulic circuit null for hydraulic cylinder of tractor

摘要

PURPOSE: To perform smooth extension and contraction of a hydraulic cylinder using a solenoid valve operated by pulse-control process. ;CONSTITUTION: The objective hydraulic cylinder controlling apparatus for tractor, etc., is composed of a hydraulic circuit 3 connected to a cylinder 2 via a flow dividing valve 1 and a by-pass circuit 5 having a duty-controlled quick-response solenoid valve 4 and by-passing the flow dividing valve 1 or an oil-discharging circuit 9 having a duty-controlled quick-response solenoid valve 4.;COPYRIGHT: (C)1993,JPO&Japio