液压泵产品功率密度特性分析  

Analysis of Power Density of Hydraulic Pumps

作　　者：杨文昌 杨友胜[1] YANG Wenchang;YANG Yousheng(College of Engineering,Ocean University of China,Qingdao Shandong 266100,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100

出　　处：《机床与液压》2023年第14期211-220,共10页Machine Tool & Hydraulics

基　　金：山东省重点研发计划项目(2017GGX30106);山东省自然科学基金项目(ZR2018MEE023)。

摘　　要：液压泵功率密度定义为输出功率与质量的比值。对质量和体积有严格要求的诸如深海机电、航空航天和仿生机器人等领域,功率密度是液压泵研发与选用的重要指标。基于结构和材料2个方面,对比分析了国内外知名液压公司3类液压泵(齿轮泵,叶片泵和柱塞泵)的功率密度特性。结果表明:液压泵功率密度范围为0.18~7.35 kW/kg,齿轮泵功率密度最大为7.35 kW/kg,叶片泵为5.41 kW/kg,斜盘式柱塞泵为3.54 kW/kg;力平衡式或间隙自动补偿式结构的液压泵功率密度较高;铝、钛等轻质合金材料的应用能明显降低液压泵自重,提高功率密度。研究为高功率密度化、轻量化液压泵的设计和选用提供参考。The power density of a hydraulic pump is defined as the ratio of output power to its own weight.In fields such as deep-sea electromechanical,aerospace and bionic robots that have strict requirements on weight and volume,power density is an important indicator for the development and selection of hydraulic pumps.The power density characteristics of three types of hydraulic pumps(gear pumps,vane pumps and plunger pumps)of well-known hydraulic companies at home and abroad were compared based on the structure and material.The results show that:the power density of the hydraulic pump ranges from 0.18 kW/kg to 7.35 kW/kg,the maximum power density of the gear pump is 7.35 kW/kg,the vane pump is 5.41 kW/kg,and the swash plate piston pump is 3.54 kW/kg;the hydraulic pump with the force-balanced or automatic clearance compensation structure has a higher power density;the application of aluminum,titanium and other light alloy materials can significantly reduce the weight of hydraulic pump and improve the power density.This study provides reference for the design and selection of hydraulic pumps with high power density and lightweight.

关 键 词：液压泵 功率密度 结构 材料 

分 类 号：TG137[一般工业技术—材料科学与工程]