HYDRAULIC CYLINDER SYNCHRONIZATION SYSTEM Russian patent published in 1998 - IPC

FIELD: hydraulic equipment where agreed motion of output links of hydraulic motors is required. SUBSTANCE: system includes two hydraulic cylinders, reverse spool valve unit, supply source, synchronization device; reverse spool valve unit is made in form of two five-line three-position distributors with closed center. Pressure line of each distributor is connected with pressure main of supply source. Two actuating lines are connected with working chambers of hydraulic cylinders. First return line of one of two distributors is connected with second return line of other distributor and second return line is connected with first return line of other distributor. Combined return lines of distributors are connected with respective inlets of throttling distributor. Back coupling provides for opening. EFFECT: enhanced efficiency. 1 dwg