直线共轭内啮合齿轮泵中内齿圈静压支承油膜的性能分析

Analysis on the Inner Ring Hydrostatic Support Fluid Film Characteristics of Straight Conjugate Internal Gear Pump

采用间隙密封的直线共轭内啮合齿轮泵的内齿圈在油液压力和齿轮啮合力的作用下,其外壁对泵体内壁产生较大的压力,基于该问题首先对内齿圈进行了受力分析,其次在泵体内壁开设由矩形槽和V形槽构成的复合静压支承槽,并利用油膜静压支承原理减小内齿圈与泵体内壁直接接触所造成的磨损,最后建立了内齿圈静压支承油膜的承载力与承载刚度的数学模型,这将对进一步研究直线共轭内啮合齿轮泵提供一定的理论依据。

The inner gear of the straight conjugate internal gear pump with gap seal under the action of oil pressure and gear meshing force,causing the external wall produces greater pressure on the inner wall of the pump body.Based on this problem,firstly,the force analysis of the inner gear was carried out.Secondly,a compound hydrostatic support groove composed of rectangular groove and V groove is set on the inner wall of the pump body,using the principle of the hydrostatic support reduces wear caused by directly contact between the external wall of inner gear and the inner wall of the pump body.Finally,the mathematical model of the bearing capacity and the stiffness of the hydrostatic support oil are established,which will provide some theoretical basis for the further study about the straight conjugate internal gear pump.