自动变速箱内置润滑换挡齿轮泵结构优化设计

发布时间：2018-05-31 20:39

本文选题：齿轮泵 + 液力自动变速箱　；参考：《机械传动》2017年05期

【摘要】：液压齿轮泵是液力自动变速箱的重要组成单元,其为自动换挡系统和润滑冷却系统提供油液。以液力自动变速箱设计为依托,根据径向并联外啮合多齿齿轮泵的结构特点,针对其工作过程中遇到的内部困油现象进行研究,分析形成的原因和解决办法。对齿轮泵进行结构优化设计,提出偏置卸荷槽设计方案,并对其尺寸和位置进行分析,基于CFD对3种不同形式齿轮泵结构工作流场进行对比分析,并搭建试验台架,对优化设计后齿轮泵性能进行试验研究,以验证理论分析的准确性。结果可知,当采用偏置开设卸荷槽时,设计合适的参数可有效改善困油现象,并且齿轮泵的容积效率得到提高;通过试验测试对比容积效率可知,结构优化设计及所搭建数学模型的准确性与可靠性,为此类变速箱齿轮泵的设计提供参考依据。
[Abstract]:Hydraulic gear pump is an important component of hydraulic automatic gearbox, which provides oil for automatic shift system and lubricating cooling system. Based on the design of hydraulic automatic gearbox, according to the structural characteristics of radial parallel external meshing multi-tooth gear pump, the internal oil trap phenomenon encountered in its working process is studied, and the causes and solutions are analyzed. The structure optimization design of gear pump is carried out, the design scheme of offset unloading slot is put forward, and its size and position are analyzed. The structure workflow field of three different gear pumps is compared and analyzed based on CFD, and the test stand is built. In order to verify the accuracy of theoretical analysis, the performance of gear pump after optimized design is studied experimentally. The results show that the design of suitable parameters can effectively improve the phenomenon of oil trap, and the volumetric efficiency of gear pump can be improved. The accuracy and reliability of the structural optimization design and the mathematical model provided a reference for the design of this kind of gear pump.
【作者单位】：黄河交通学院;
【基金】：河南省科技攻关计划项目(132102210215)
【分类号】：TH137.51

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