| 摘要 |
A regenerative hydraulic cylinder has a piston dividing its interior into a pair of chambers. A rod extends from the piston through a cylinder end wall. Several axial passages in the piston extend between opposite piston faces. A valve member is mounted over one piston face and has a sleeve that slides axially in a recess formed in the one piston face. Springs urge the valve member to a flow-impeding orientation against the piston face. A hydraulic pilot line in the rod, accessible at an external rod end, permits the valve member to be displaced away from the piston face to a flow-enabling orientation. The valve state is controlled to permit fluid flow directly between chambers during extension or contraction of the cylinder.
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