静电喷雾灭蝗机具的机械设计

Design of electrostatic spray machine for killing locust

为适应大面积高效地面喷洒药液防治蝗虫灾害,基于静电喷雾理论设计了喷洒灭蝗机具.机具已成功地应用于新疆草原灭蝗工作中,并取得了良好的效果.该机具以四轮驱动越野车作为载具,安装了发电机组、喷洒风筒部件、机架部件、高压静电发生部件、喷筒回转部件、电动推杆部件、底架部件、加药泵部件、储液罐部件等.实现了在驾驶室内可控制喷雾的启停、喷筒的俯仰及左右摆动.阐述了动力传送、喷洒风筒、喷筒回转部件和机架制动器等主要部件的工作原理、设计过程及运动分析.导出了喷筒回转部件中电动推杆工作行程的计算公式和介绍电磁制动控制器的设计结构及运动分析.

To increase the efficiency of large area spraying pesticide to kill locust, the electrostatic spray theory is applied on the machine design. This machine has been applied to the work of killing locust in Xinjiang province, and has achieved great effect. 4WD cross-country vehicle was used as carrier, and many components were installed on it. Spraying and movement of spray bucket can be controlled in vehicle cab. The main components of this machine and their functions are stated, which include transmission system, spray fan bucket, spray bucket rotary part and brake part. Design and analysis are focused on spray fan bucket and spray bucket rotary part which consist of electromotive handspike, spherical bearing, platform of rotary part, pinwheel reducer, electromagnetic braking controller, machine frame and so on. Calculation method of working stroke of electromotive handspike is deduced. Structure design and movement analysis of electromagnetic braking controller are indicated.