旋转配流盘式恒压双排轴向柱塞泵的建模和特性分析  

Modeling and Characterization of a Constant Pressure Axial Piston Pump with a Rotating Distribution Disc

作　　者：李金龙 张宇[1] 邓海顺[1] 陈永浦 陈然 LI Jin-long;ZHANG Yu;DENG Hai-shun;CHEN Yong-pu;CHEN Ran(School of Mechanical and Electrical Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学机电工程学院,安徽淮南232001

出　　处：《液压气动与密封》2024年第12期1-7,共7页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金(51575002);安徽省教育厅项目(2022AH010052)。

摘　　要：为研究旋转配流式恒压双排轴向柱塞泵的特性,建立了旋转配流盘式恒压双排轴向柱塞泵模型,搭建了AMESim旋转配流式恒压双排轴向柱塞泵的整体仿真模型,仿真分析了出口压力对出口流量的影响、出口压力对配流盘旋转角度的影响以及在可变节流孔信号突变情况下变量机构复位弹簧刚度和压力控制阀阀芯刚度对旋转配流式恒压双排轴向柱塞泵的动态特性影响。结果表明:出口流量随着出口压力的增加而减小,配流盘旋转角度随着出口压力的增加而增加;复位弹簧的刚度越大,恒压泵的动态响应速度越快,超调量越小;阀芯直径的增加会降低恒压泵的动态响应速度,达到稳态的时间变长,达到稳态过程的配流盘旋转的幅度明显增加,流量震荡和压力震荡变大。A detailed model for a rotationally balanced constant-pressure dual-row axial piston pump was meticulously developed,followed by an extensive AMESim simulation.This simulation investigated how outlet pressure impacts flow,the correlation between outlet pressure and the distribution plate's rotation angle,and the pump's dynamic behavior with sudden changes in the variable orifice signal.The analysis considered the nuanced effects of reset spring stiffness in the variable mechanism and valve stiffness in the pressure control valve.The findings highlighted a decrease in outlet flow with rising outlet pressure and an increased rotation angle of the distribution plate.A stiffer reset spring led to quicker dynamic response and reduced overshoot in the pump.Conversely,a larger valve core diameter slowed down the pump's dynamic response,prolonged steady-state attainment,and intensified flow and pressure oscillations by amplifying the distribution plate's rotation during that phase.

关 键 词：旋转配流盘 恒压泵 刚度 动态响应 阀芯直径 

分 类 号：TH137[机械工程—机械制造及自动化]