短距高效缓冲装置如图所示。它是由装在动力活塞上的多个双锥面启闭阀所组成。当活塞3在油压作用下运动时,假如向左运动,在油压作用下,锥阀阀芯1左端锥面与阀座2贴合,将油路闭死,不起缓冲作用。当活塞3接近缸底端时,阀芯1首先与缸底接触,将油路打开,使高压腔压力油流入回油腔,起到缓冲作用 Short-distance high-efficiency buffer device as shown. It is composed of a plurality of double cone opening and closing valves mounted on the power piston. When the piston 3 under the action of hydraulic pressure, if the left to move, under the action of the hydraulic pressure, cone valve spool 1 and the valve seat 2 cone, the road closed, can not afford to buffer. When the piston 3 close to the bottom of the cylinder, the spool first contact with the bottom of the cylinder, the oil open, so that the high-pressure chamber pressure oil flows back into the oil chamber, play a buffer role