开路式变量柱塞泵的研究  

Research on Open-circuit Variable Displacement Piston Pump

作　　者：王远[1] 刘娟 闻德生[2] 隋广东 WANG Yuan;LIU Juan;WEN De-sheng;SUI Guang-dong(Shanxi Engineering Vocational and Technical College,Taiyuan 030000,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]山西工程职业技术学院,山西太原030000 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《液压气动与密封》2019年第10期26-29,25,共5页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金资助项目(50975246)

摘　　要：近些年来,超高压、大流量泵受到液压行业人士的普遍关注。为了实现这一工况,液压系统通常利用增压器以提高系统压力,但此种方法使液压系统出现复杂化、成本变高等问题。由于开路式变量径向柱塞泵的结构特殊,故可通过多个泵串联实现高压、大流量的输出。变量机构采用限压式外反馈变量调节,可连续对泵的排量进行调节,文章对新型变量径向柱塞泵的稳态特性和动态特性进行了分析,并通过推导出的传递函数,对影响变量泵动态响应速度的因素进行了分析。In recent years,ultra-high pressure,high flow pumps have received widespread attention from the hydraulic industry.In order to achieve this condition,the hydraulic system usually uses a supercharger to increase the system pressure,but this method complicates the hydraulic system and increases the cost.Due to the special structure of the open-circuit variable radial piston pump,high-pressure,high-flow output can be realized by connecting a plurality of pumps in series.The variable mechanism adopts the pressure-limiting external feedback variable adjustment,which can continuously adjust the displacement of the pump.The paper analyzes the steady-state characteristics and dynamic characteristics of the new variable radial piston pump,and through the derived transfer function,Factors affecting the dynamic response speed of the variable pump were analyzed.

关 键 词：开路式 变量机构 稳态特性 动态特性 

分 类 号：TH137.51[机械工程—机械制造及自动化]