The pushing force may be supplied manually and multiplied by a screw and lever arrangement, or pneumatic or hydraulic pressure may be used.
通过螺杆和杠杆机构由人工施加推力，或用风压或液压施加推力。
2
The pressure mechanism, of which the forced direction is changed by a force transferring lever, consists of a pressure screw and a pressure nut.
加压机构由加压螺杆和加压螺母组成，并用传力杠杆改变受力方向；
3
The Central Line of the positioning screw bolt and an outlet shaft lever are coherent basically in order to adjust the front and back position of the outlet shaft lever.