Energy efficient hydraulic drive for the linear movement of a heavy body

摘要

The hydraulically driven arrangement has control cylinder (11) and drive cylinder (12) each having a piston (17) with one-sided piston rod (18). The pistons are coupled on a mass body (10) based on the reciprocating motion of the mass body. Each of the control cylinder and drive cylinder is controlled by control circuits of control valve (13) or control valve assembly (23) hydraulically separated from each other.