介绍了汽油内燃式防汛抢险打桩机的结构和工作原理 ,提出了防汛抢险用桩所需沉桩功的落锤试验法 ,研制了重量轻且机动性好的非固定式多功能桩架 ,对直线运动输出式汽油内燃机进行改进并用于打桩机上 ,分析了发动机改进后自动、连续工作的机理 ,说明了连续作业惯性控制机构相关设计参数的确定方法 ,使打桩机具备了重量轻、沉桩功大、机动灵活、操作方便、适应性强、3人即可操作等特点。 This paper introduces the structure and working principle of petrol internal combustion flood control and rescue pile driving machine, puts forward the falling weight test method of pile sinking work required for flood control and emergency rescue, and develops a lightweight and flexible non-fixed multi- The linear output gasoline internal combustion engine is improved and used on the pile driver. The mechanism of the automatic and continuous operation after the engine is improved is analyzed. The method of determining the design parameters of the inertial control mechanism of the continuous operation is explained. The pile driver is equipped with light weight, Large, flexible, easy to operate, adaptable, 3 people can operate and so on.