基于凸轮曲线的阀配流柱塞泵输出特性分析  

Analysis of output characteristics of valve-distribution piston pump based on cam curve

作　　者：王虹艳 李永康 廉自生 李润泽 WANG Hongyan;LI Yongkang;LIAN Zisheng;LI Runze(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Key Laboratory of Fully Mechanized Coal Equipment,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学机械与运载工程学院,山西太原030024 [2]太原理工大学煤矿综采装备山西省重点实验室,山西太原030024

出　　处：《华中科技大学学报（自然科学版）》2022年第2期32-37,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：山西省重点研发计划资助项目(201903D121050);中国博士后科学基金资助项目(2020M680914)。

摘　　要：为提高柱塞泵配流阀的响应特性,满足高速工况需求,提出一种应用于高响应轴向柱塞泵的凸轮组合方程曲线设计方法.以阀配流轴向柱塞泵为对象,分别搭建基于余弦方程、高次多项式与组合方程曲线的柱塞泵液压仿真模型,分析不同凸轮曲线对配流阀阀芯滞后特性的影响.计算不同凸轮曲线下泵的理论排量和瞬时排量,探究曲线对柱塞泵流量脉动的影响.结果表明:与余弦曲线相比,基于组合方程曲线的配流阀阀芯响应性至少提高了30%,但在该方程曲线下,柱塞泵仍存在一定的流量脉动,研究成果为轴向曲线式柱塞泵曲线的选型与优化提供理论依据.In order to improve the response characteristics of the piston pump valve and meet the requirements of high-speed working conditions,a design method of cam combination equation curve applied to high-response axial piston pumps was proposed.Taking the valve-distribution axial piston pump as the research object,the hydraulic simulation models of the piston pump based on the cosine equation,high-order polynomial and combination equation were established respectively.The influence of different cam curves on the hysteresis characteristics of the valve core was analyzed.The theoretical displacement and instantaneous displacement of the pump under different cam curves were calculated.The influence of the curve on the flow pulsation of the plunger pump was explored.The results show that compared with the cosine equation curve,the responsiveness of the valve core under the combined equation curve is improved by at least 30%.But under the curve of this equation,the piston pump still has flow pulsation.The research results provide the theoretical basis for the selection and optimization of the curvilinear piston pumps curve.

关 键 词：轴向柱塞泵 凸轮曲线 阀芯滞后 流量脉动 输出特性 

分 类 号：TH137.51[机械工程—机械制造及自动化]