The manual pressingsection makes the downward movement by a slide cylinder and a pressing head driven by a pressing rod, and the travel of the pressing head is controlled by a limited ring;
手动按压部分由按压杆带动滑柱及按压头向下运动，并通过限位环来控制按压头的行程；
2
The friction force in the clutch works just like the blocks in the frication section of brake, except that the spring presses on the clutch plate instead of weight pressing the block into the ground.
Moreover, a backward side with respect to the pressing direction has a circular section and its diameter is substantially same as the inner diameter of the container.