从分析直齿外啮合齿轮泵的流量特性入手,采用扫过容积的方法,以主动齿轮的啮合半径为变量,建立异齿数下齿轮泵单齿流量脉动的平均流量、流量不均匀系数和流量脉动频率的公式。实例分析异齿数对流量特性的影响,并得出一些重要结论。 Starting with the analysis of the flow characteristics of gear pump, the sweeping volume method was used to establish the average flow rate, the flow rate nonuniformity coefficient and the flow pulsation of the single-tooth gear flow pulsation under the different tooth count, taking the meshing radius of the driving gear as a variable Frequency formula. The influence of the number of different teeth on the flow characteristics is analyzed by examples, and some important conclusions are drawn.