| 摘要 |
<p>A hydraulic control valve for heavy equipment is provided to prevent hunting of an actuator by maintaining the pressure of a regeneration path to pressure change of a supply path. A hydraulic control valve for heavy equipment comprises a valve body(3), a spool(7) and a regeneration valve(12). A valve body comprises: a supply path(6) in which the working fluid is supplied from a hydraulic pump(1); a port(4,5) supplying the working fluid of the supply path to an actuator or receiving the working fluid from the actuator; a tank passage feeding back working fluid ejected from the actuator to a hydraulic tank; and a first regeneration path(13) supplying the supply path with a part of the working fluid fed back from the actuator. The spool comprises a second regeneration path(15) which controls the working fluid supplied from the supply path to the actuator and supplies the supply path with the working fluid of the first regeneration path.</p> |
