农业机械学报2024，Vol.55Issue(6)：434-441,8.DOI:10.6041/j.issn.1000-1298.2024.06.044
直线共轭内啮合齿轮泵集中参数法建模与激振源研究
Lumped Parameter Modeling and Excitation Sources Analysis of Linear Conjugated Internal Gear Pumps
摘要
Abstract
Linear conjugated internal gear pumps are widely used in eletro-hydrostatic actuating systems as power elements with their efficient and low-noise performance.A linear conjugated internal gear pump simulation model was established by the lumped parameter method,the fluid domain within a linear conjugated internal gear pump can be specified as a finite number of volumes where the fluid properties(e.g,pressure,density,and modulus of elasticity,etc.)can be considered as concentrated variables.A test platform was constructed to measure the suction and discharge pressure pulsations of the linear conjugated internal gear pump.The excitation sources,including the pressure pulsation in the inlet and outlet ports,the pressure in the tooth cavity,and the radial force of the gear and tooth ring in the x and y directions were calculated and analyzed.The results demonstrated that the lumped parameter model of linear conjugate internal gear pump established had good accuracy and reliability.The magnitude of the radial force on the gear and tooth ring varied periodically with the deflection angle.In the x-direction,the radial force acting on the tooth ring was pointed to the low-pressure side,and the radial force acting on the gear was pointed to the high-pressure side.In the y-direction,both theradial forces acting on the gear and ring were fluctuated between positive and negative values.The radial forces in the x-direction were smaller than those in the y-direction at the fundamental harmonic;the phenomenon of oil trapping led to a slight increase in the pressure in the tooth cavities.The research result can provide a reference for the optimized design and vibration noise analysis of linear conjugated internal gear pumps.关键词
直线共轭内啮合齿轮泵/集中参数法/压力脉动/径向力/激振源Key words
linear conjugated internal gear pump/lumped parameter method/pressure pulsation/radial force/excitation source分类
机械工程引用本文复制引用
盛精,朱少辉,叶绍干,陈鼎,赵守军,刘会祥..直线共轭内啮合齿轮泵集中参数法建模与激振源研究[J].农业机械学报,2024,55(6):434-441,8.基金项目
国家自然科学基金项目(52175062)、福建省自然科学基金项目(2021J01049、2021J011202)、航空科学基金项目(20220007068002)和福建省科技计划引导性项目(2021H0027) （52175062）
