HYDRAULIC DRIVE MECHANISM WITH SYNCHRONIZED MOTION OF TWO PISTONS

When lever 1 is turned counterclockwise, valve spool 2 is shifted to the right. Then fluid is delivered by gear pump 3 through the groove of valve spool 2 to the right end of cylinder 4, moving piston 5 to the left. Fluid from the left end of cylinder 4 is admitted through pipeline 10 to the right end of cylinder 6, moving piston 7 also to the left. Fluid from the left end of cylinder 6 is dischar…