With the characteristics of simple contruction and flexible motion, it can act in two-way direction to obtain longer climb displacement within shorter piston strike of pneumatic cylinder, and has the force amplifying function.

• 本机构结构简单，动作灵活，可以实现正反爬升动作，能在气缸较小的行程内实现大的爬升距离，并具有力的放大作用。