| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily provide a manufacturable constitution at low cost and to efficiently control an angle of a movable vane. SOLUTION: A hydraulic machinery 1 capable of changing an angle of a movable vane V by advancing, retreating and moving an operating rod 5 which is arranged within a main shaft 4 and is connected with the movable vane V is constituted of an electric motor 9, a roller screw 10 and a nut member 12. The machinery 1 is provided with an advancing, retreating and moving mechanism for advancing, retreating and moving the operating rod 5, a thrust bearing 15 for connecting a nut member 12 and the operating rod 5 of the advancing, retreating and moving mechanism and freely rotatably supporting the operating rod 5 on the roller screw 10 and the nut member 12 and a cooling tank 16 which stores the thrust bearing 15, is fixed to the operating rod 5 and has cooling liquid injected.</p> |
