| 摘要 |
PURPOSE:To prevent blowing-out of pressurized fluid in an accumulator due to collision by providing an opening valve on the accumulator of a suspension device, so as to open the opening valve by the output of a collision detecting means. CONSTITUTION:On a communicating route 42 by which the lower stream side of an accumulator 26a of a high pressure line 10 and a low pressure line 36 are communicated together, a fail-safe valve 41 having two positions of open position and closed position is installed. The fail-safe valve 41 comes into the open position by means of the output from a controller that detects failure, and high pressure accumulated oil in accumulators 26a, 26b is sent back to a reverse tank 31, and is depressurized. In this structure, blowing out of the working oil in the accumulators can be prevented. |
