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一、前言: 摇臂转动惯量对喷头转动速度、摇臂敲击频率等具有很大影响,而这两项参数又直接与喷头的水力性能有关. 我国Py系列喷头为了提高射程,采用了较低的摇臂敲击频率,同时为使喷头回转速度不致太小,则相应要求喷头一次转角要大.因此,对摇臂转动惯量合适范围的理论分析,可以归结成为“求使喷头一次转角最大的摇臂的转动惯量”这样一个极值问题.
First, foreword: Rocker arm moment of inertia has a great influence on the rotation speed of the nozzle, rocker arm strike frequency, etc., These two parameters are directly related to the hydraulic performance of the nozzle .In order to improve the range, our Py series adopts a lower Of the rocker percussion frequency, and in order to make the nozzle rotation speed is not too small, then the corresponding requirements of a nozzle rotation angle to be large.Therefore, the theoretical analysis of the appropriate range of rocker arm moment of inertia, can be summed up as “to maximize the nozzle one corner Rocker moment of inertia ”such an extreme problem.