微小型球形泵运动学特性分析与结构改进  

Kinematic Characteristics Analysis and Structural Improvement of Micro Spherical Pump

作　　者：李毓晨 赵江澳 付伟霖 付永领[3] 王陆一 LI Yu-chen;ZHAO Jiang-ao;FU Wei-lin;FU Yong-ling;WANG Lu-yi(AVIC XI'AN Flight Automatic Control Research Institute,Xi'an 710065,China;Beihang School,Beihang University,Beijing 100191,China;School of Mechanical Engineering&Automation,Beihang University,Beijing 100191,China;Shenzhen Spherical Power Technology Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]航空工业西安飞行自动控制研究所,陕西西安710065 [2]北京航空航天大学北航学院,北京100191 [3]北京航空航天大学机械工程及自动化学院,北京100191 [4]深圳市球形动力科技有限公司,广东深圳518000

出　　处：《液压气动与密封》2024年第12期97-104,共8页Hydraulics Pneumatics & Seals

摘　　要：球形泵是一种新型容积式液压泵,具有体积小、结构简单、功率密度高、可靠度高等优点,在微小型液压驱动领域具有广阔的发展潜力。目前针对球形泵的研究较少,存在理论基础、建模研究不完善等问题,在相当程度上阻碍了球形泵优势性能的发挥。因此,有必要完善球形泵系统理论与模型基础,建立一套较为通用的球形泵运动学分析方法,为球形泵的结构设计优化和推广应用提供理论支撑。基于球形泵独特容积理论,对现有两种构型(A/B型)球形泵结构与工作原理进行了剖析,分别建立了运动数学分析模型,构建了运动学特性与结构参数间映射关系;同时对两种构型的球形泵运动学特性进行对比分析,并通过建模仿真,验证了理论分析的准确性;最后,通过逆转机构运动链,设计了一种结构改进的新型球形泵,能够减小精密球面配合数量,提高工艺性,并实现球形泵的精确配流。As a new type of volumetric pressure pump,spherical pump has the advantages of tiny volume,high power density,compact structure,and high reliability,which has strong potential against traditional hydraulic components in miniature hydraulic drive field.Currently,there is little research on spherical pumps,and there are problems such as incomplete theoretical foundations and modeling research,which to a certain extent hinder the full realization of the advantages of spherical pumps.Therefore,it is necessary to improve the theoretical and modeling foundation of spherical pump systems,and build a relatively universal kinematic analysis method for spherical pumps to provide theoretical support for the structural design optimization and promotion of spherical pumps.Based on the unique volume theory of spherical pumps,the structure and working principles of existing two configurations(A/B type)spherical pumps are analyzed,and mathematical motion models are established,which constructs the mapping relationship between kinematic characteristics and structural parameters.Then a comparative analysis is conducted between the A/B type,and through modeling and simulation,the accuracy of theoretical analysis is verified.By reversing the transmission chain,a new type of spherical pump with improved structure has been designed,which can reduce the number of precision spherical fits,improve processability,and achieve precise flow distribution in spherical pump.

关 键 词：球形泵 机理剖析 运动学分析与仿真 结构设计 

分 类 号：TH137[机械工程—机械制造及自动化]