短幅外摆线内啮合可逆回转齿轮油泵在国外得到广泛的发展。近年来在我国的一些引进设备中也有所应用,但目前国内尚缺乏这种油泵的设计原理及试验研究。本文根据其基本结构和工作原理提出了这种油泵的齿形曲线参数方程和啮合线方程,还介绍了在研制这种油泵所作的初步试验及其结果。这种油泵具有很大的优点,其成果可为设计提供依据。 Short epicyclic internal meshing reversing gear pump has been widely developed in foreign countries. In recent years, some of our imported equipment has also been applied, but at present, the design principle and experimental study of this pump is still lacking. According to its basic structure and working principle, this paper proposed the tooth profile curve equation and mesh equation of the oil pump, and also introduced the preliminary test and the result in the development of the pump. This pump has great advantages, the results can provide the basis for the design.