1·A joint lever is arranged on the joint, and can press the push rod when pulled by a guy cable to open the valve core.
接头上有接头杠杆，在拉索的拉动下能够压动顶杆，打开阀芯。
2·Furthermore, one hand lever (5) is connected by a joint to one of the jaws (7), and a pressure support is located between the hand levers (4, 5) for the formation of a toggle (K).
另外，一个手柄(5)通过接头连接到其中一个钳口(7)，并且压力支撑件位于手柄(4,5)之间用于形成曲柄杠杆机构(K)。