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本方针对普通齿轮泵存在的主要缺陷，提出了几种结构新颖，原理简明的多齿轮泵的实现形式，并以定轴轮系齿轮泵为例，分析了该泵的流量特性和径向力：通过对各类油泵技术性能的讨论，得出了该定轴轮系复合定量泵的技术性能明显优于其它各类定量泵的结论。
Based on the main defects of the ordinary gear pump, this paper proposes several forms of the new gear pump with simple structure and simple principle. Taking the fixed-gear gear pump as an example, this paper analyzes the flow characteristics of the pump and the radial force Through the discussion of the technical performance of various oil pumps, the conclusion is drawn that the technical performance of the compound metering pump with fixed shaft gear train is obviously better than that of other types of fixed pump.