| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce a power loss in supplying pressure oil to a hydraulic cylinder and to improve the responsiveness of an opening/closing arm in a crusher including a crushing arm and the hydraulic cylinder for opening/closing the crushing arm. <P>SOLUTION: The crusher 2 is provided with an accumulator 22 accumulating oil discharged from heat side oil chambers 20AH, 20BH when the opening/closing cylinders 20A, 20B are contracted, while supplying the accumulated oil to the head side oil chambers 20AH, 20BH when the opening/closing cylinders 20A, 20B are elongated, and a pilot selector valve 23 switching oil supply/discharge between the accumulator 22 and the head side oil chambers 20AH, 20BH. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
