| 摘要 |
<p>The present invention relates to the field of adjustable pressure relief valves for use in hydraulic circuits, particularly for controlling pressure transients - acceleration and deceleration - of hydraulic motors subject to inertia forces (progressive anti-shock pressure relief valves). The optimized valve of the present invention is characterized by reduced leakage, involving a reduced influence of flow forces during valve control, as well as reduced pressure losses; these characteristics prevent the hydraulic motor from rotating when it is subject to a drive load and is not powered, eliminate vibrations and instability of valve-regulated pressure, especially at low flow rates, and ensure an adjustment value varying according to the flow rate through the valve. A further characteristic of the valve of the present invention is the reduced number of its components, resulting in greater cost effectiveness.</p> |
