电控变量泵对液压挖掘机节能的实现分析
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摘要
基于恒功率变量泵排量调节结构和电控泵的控制原理分析,挖掘机出口压力Pd、电控泵功率切换压力Pf与负流量压力Pi的大小决定了液压泵排量的大小.并建立了电控泵的恒功率控制模型和负流量控制模型,并进行了实验研究.
By analyzing the adjustment structure of constant power variable displacement pump and control principle of electric pump,the size of displacement hydraulic pump is determined by such factors as the size of the excavator,pressures Pd and Pf at the outlet of electronic power switch pressure pump,and negative flow pressure Pi.Accordingly,the constant power control model,together with negative flow control model,is established via the experimental research.
By analyzing the adjustment structure of constant power variable displacement pump and control principle of electric pump,the size of displacement hydraulic pump is determined by such factors as the size of the excavator,pressures Pd and Pf at the outlet of electronic power switch pressure pump,and negative flow pressure Pi.Accordingly,the constant power control model,together with negative flow control model,is established via the experimental research.
引文
[1]汤振周.EX220-5型挖掘机主泵流量的检测与调整[J].中国工程机械学报,2009(9).Tang Zhenzhou.Main pump flow-rate measurement and adjustment for EX220-5excavators[J].Chinese Journal of Construction Machinery,2009(9).
[2]张栋.基于功率匹配的挖掘机节能控制技术的研究[D].吉林大学博士学位论文,2005,3:34-66.Zhang Dong.Research on energy saving control technology of Excavator Based on power matching[D].Doctoral Dissertation of Jilin University,2005,3:34-66.
[3]汤振周.液压挖掘机发动机与液压泵的合理匹配的研究[J].长春工程学院学报,2008(4):19-22.TANG Zhenzhou.The reasonable matching of hydraulic excavator engine and hydraulic pump[J].Journal of Changchun Institute of Technology,2008(4):19-22.
[4]李东阳,谢胜林.液压挖掘机的液压泵及其电控系统[J].中国高新技术企业,2010(28).LI Dongyang,XIE Shenglin.Hydraulic pump and electric control system of hydraulic excavator[J].China High Technology Enterprises,2010(28).
[5]巩秀江.挖掘机电控泵分析与研究[J].液压气动与密封,2012(12).GONG Xiujiang.Analysis and research on electric control pump of excavator[J].Hydraulic Pneumatic and Sealing,2012(12).
[6]贾文华.挖掘机正流量泵控液压系统的特性分析[J].南京工业大学学报,2011(11).JIA Wenhua.Analysis of the characteristics of the hydraulic control system of the hydraulic excavator[J].Journal of Nanjing University of Technology,2011(11).
[2]张栋.基于功率匹配的挖掘机节能控制技术的研究[D].吉林大学博士学位论文,2005,3:34-66.Zhang Dong.Research on energy saving control technology of Excavator Based on power matching[D].Doctoral Dissertation of Jilin University,2005,3:34-66.
[3]汤振周.液压挖掘机发动机与液压泵的合理匹配的研究[J].长春工程学院学报,2008(4):19-22.TANG Zhenzhou.The reasonable matching of hydraulic excavator engine and hydraulic pump[J].Journal of Changchun Institute of Technology,2008(4):19-22.
[4]李东阳,谢胜林.液压挖掘机的液压泵及其电控系统[J].中国高新技术企业,2010(28).LI Dongyang,XIE Shenglin.Hydraulic pump and electric control system of hydraulic excavator[J].China High Technology Enterprises,2010(28).
[5]巩秀江.挖掘机电控泵分析与研究[J].液压气动与密封,2012(12).GONG Xiujiang.Analysis and research on electric control pump of excavator[J].Hydraulic Pneumatic and Sealing,2012(12).
[6]贾文华.挖掘机正流量泵控液压系统的特性分析[J].南京工业大学学报,2011(11).JIA Wenhua.Analysis of the characteristics of the hydraulic control system of the hydraulic excavator[J].Journal of Nanjing University of Technology,2011(11).