Hydraulic linear drive, especially hydraulic transmission actuator

摘要

An actuating piston (4) divides a cylinder into two pressure chambers (6a,6b). A switching valve (12) controls the pressure applied by hydraulic fluid to the two chambers. A connecting line (20) is arranged between control lines (8,10) leading to the two pressure chambers. A control valve (22) in the connecting line selectively opens or closes the connecting line.