| 摘要 |
<p>A hydraulic cylinder cushion device installed in a hydraulic cylinder provided, in which a rod (20) performs reciprocating movement in a cylinder tube (10), and which discharges high-pressure hydraulic fluid that is formed in pressure chambers between a piston (40) and a head cover (30) and between the piston and a cover end (80) during a stroke-end operation. The hydraulic cylinder cushion device includes a check ring (90) which is installed in a groove provided on an inner surface of the head cover (30) or the cover end (80), and moves to one side in the groove so as to close a flow path during rushing into a stroke end while it moves to the other side in the groove so as to open the flow path during an initial operation in the stroke end.</p> |
