| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a proportional fluid pressure control valve having a pair of perforations each of which has a separated control spool in the valve body. SOLUTION: A pair of power feedback and linear type actuators 54, 56 are attached to the same side of the valve body 12, and each actuator controls the movements of one of the plural control spools 16, 18. Only one of the control spools controls the fluid pressure power acting on a first working port 20 of a valve assembly 10, during which a second working port 21 is connected with a tank. And, only the remaining control spool controls the fluid pressure power acting on a second working port 21 of the valve assembly 10, during which the first working port 20 is connected with the tank. With the aid of the power feedback, linear type actuators 54, 56, each spool 16, 18 can be afforded a high degree of working rigidity.</p> |
