WORK MACHINE, OPERATION METHOD OF THE SAME, AND ENERGY REGENERATION CYLINDER

摘要

PROBLEM TO BE SOLVED: To enhance reliability of operation, concerning a working machine, particularly a digger or a materials handling machine.

SOLUTION: A working machine having a movable part to be moved by at least one hydraulic drive cylinder, in particular, a digger or a materials handling machine is provided. The machine includes at least one energy regeneration cylinder for regenerating energy from the movement of the movable part. The energy regeneration cylinder is filled with gas on a bottom side 4 thereof and further has an annular space 6 filled with a medium. The energy regeneration cylinder is provided with a flow rate regulating unit 8 that regulates a flow of the medium from the annular space during a sudden advance of a piston rod 1.

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