基于液压变压器的挖掘机动臂势能再生系统

摘要/Abstract

摘要：

为了解决挖掘机工作装置下降时大量势能转化为热能的问题,提出一种以液压蓄能器为储能元件,通过液压变压器回收和再利用动臂势能的节能系统。分析了其结构原理,并以7t的挖掘机为研究对象,建立了工作装置机械结构和液压系统模型;在典型挖掘循环中对动臂液压缸速度、蓄能器液压变压器转速和排量等参数进行了数值仿真,并计算出动臂势能、回收能量、再利用能量和再生的流量等;对系统运行过程和能耗进行分析与对比,结果表明该系统运行状况良好,可显著提升节能效果,是挖掘机节能减排的有效途径。

关键词:

液压挖掘机, 液压变压器, 蓄能器, 势能再生

Abstract:

In order to improve the efficiency of hydraulic excavator's boom,an energy saving system for hydraulic boom was brought forward,which can accomplish potential energy recovery and reutilization by hydraulic transformer,adopting an accumulator as energy storing device. Firstly, the composition and working principles of the system were discussed.Then models of working set and hydraulic system were established.Simulation under typical working cycle presents,the amount of boom potential energy,recovered energy,reutilized energy and regenerated flow volume.Furthermore,the energy consumption of boom was analyzed and compared with the original hydraulic system.After analysis,it shows that the system runs steadily and comfortably,saves energy remarkably by potential energy reutilization and flow regeneration,has good potential for improving energy utilization of hydraulic excavator.

Key words: hydraulic excavator, hydraulic transformer, accumulator, potential energy regeneration

中图分类号:

TH137.3

张树忠, 邓斌, 柯坚.

基于液压变压器的挖掘机动臂势能再生系统

[J]. 中国机械工程, 2010, 21(10): 1161-1166.

ZHANG Shu-Zhong, DENG Bin, KE Jian.

Research on Energy Regeneration System of Hydraulic Excavator's Boom Based on Hydraulic Transformer

[J]. China Mechanical Engineering, 2010, 21(10): 1161-1166.

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链接本文: http://www.cmemo.org.cn/CN/

http://www.cmemo.org.cn/CN/Y2010/V21/I10/1161

参考文献

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