| 摘要 |
PURPOSE:To prevent an accident in training cars, by interposing a direction selector valve between a pair of lateral power steering devices and fluid pressure power source and operating one of the steering devices having priority through said valve. CONSTITUTION:A direction selector valve 17 of two-position selective type is provided between each fluid pressure power feed pipe line 14, 15 to a pair of lateral power steering devices 3, 4 and a pump 16 of fluid pressure power source. This selector valve 17 is selectively operated to feed pressure fluid from the pump 16 to one of the steering devices 3, 4. A flow divider valve 21 is interposed between the pump 16 and the valve 17, and low flow working fluid, divided by the flow divider valve 21, is guided to the steering device 3 at an instructor side via a pipe 22 as pilot pressure in a pilot valve 23. In case of emergency, if an instructor steers a handle, the pilot pressure in the pilot valve 23 is changed to operate the steering device 3 having priority. |
