We conduct an investigation in work theory of wobbler fur thest opening and least opening,derivation method of calculation air cylinder length of trave,and determine other parameter of air cylinder.

• 根据气动跑车防护工作原理图,研究了摆杆机构最大开启位置和最小开启位置,推导出了气缸的行程选型计算公式以及气缸的其它参数。