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图1所示缓冲器的缓冲力可根据工作情况随时调节.缓冲力最大时,象刚性一样;最小时,起不到缓冲作用。该缓冲器构造不复杂、体积小、操作方便、调节灵活。其结构如下:工作缸12和控制缸11的右端,在同一位置上分别开有两条环形槽(见图2、3),在左端同一位置上分别钻有φ2和φ3小孔。在固定缸10和控制缸11之间有一空隙,作回油腔用,缸销17插在固定缸和控制缸的凹槽内(见图4)。旋转套6可带动控制缸11旋转,以调节两环形槽的重合度,从而达到调节缓冲力的目的。顶杆4的右端有一 T 形孔(见图5),它与工作缸和控制
The cushioning force of the buffer shown in Fig. 1 can be adjusted at any time according to the working conditions. When the cushioning force is maximum, the rigidity is the same; at the minimum, the cushioning effect can not be achieved. The buffer structure is not complicated, small size, easy operation, flexible adjustment. The structure is as follows: The working cylinder 12 and the right end of the control cylinder 11 are respectively provided with two annular grooves (see figures 2 and 3) at the same position, and holes φ2 and φ3 are respectively drilled at the same position on the left end. There is a gap between the fixed cylinder 10 and the control cylinder 11 for the oil return chamber, and the cylinder pins 17 are inserted into the grooves of the fixed cylinder and the control cylinder (see FIG. 4). The rotating sleeve 6 can drive the control cylinder 11 to rotate so as to adjust the coincidence degree of the two annular grooves so as to achieve the purpose of adjusting the damping force. The right end of mandrel 4 has a T-shaped hole (see Figure 5), it with the cylinder and control