| 摘要 |
<p>The present invention relates to a hydraulic auxiliary system with an accumulator increasing flow for a concrete pump. The system includes a connecting oil path with an inlet point P and an outlet point B. A check valve locates between the point P and B. There is an accumulator 10 and a relief valve 12 with a outlet point T between the check valve 11 and the point P. The pressured oil go into the accumulator storing energy through the point P, and then the accumulator exports the another pressured oil through the check valve 11. The pressure of point B controls the state of the accumulator 10. The relief valve 12 sets the relief pressure and the oil relieved go back to the tank through the point T. A distribution valve locates in the operating oil path, when the distribution valve shifts, the accumulator releases some pressured oil to complement the need of power. When the distribution valve does not shift, the accumulator supplies pressured oil also to the operating oil path. The present invention has stable property and the pump in this system runs stably.</p> |
