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Energy efficiency analysis of integrated drive and energy recuperation system for hydraulic excavator boom

机译：液压挖掘机动臂集成驱动与能量回收系统的能效分析

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摘要

When the hydraulic excavator boom drops, the gravitational potential energy accumulated during the lifting process is converted into heat energy and dissipated through the throttling effect of hydraulic valve, which results in poor energy efficiency and higher temperature of hydraulic oil. A cooling system must be installed to lower the temperature, increasing the cost and complexity of the system. In order to solve the above problems, an integrated drive and energy recuperation system based on a three-chamber hydraulic cylinder is proposed. In the proposed system, one chamber of the three-chamber cylinder is directly connected to a hydraulic accumulator, storing and reusing the potential energy of the boom. The other two chambers are connected to the main driving circuit. The proposed system is first studied with an integrated co-simulation of the mechanical and hydraulic systems. Through the simulation, the energy saving performance of the new system is verified, and the initial pressure of the hydraulic accumulator is determined. In addition, the new system is tested on a 6-ton hydraulic excavator, and the results are compared with the ones of double-chamber hydraulic cylinder driving system. The test results show that with the proposed system, the energy consumption of the boom is reduced by 50.1% and the peak power of the power source is reduced by 64.9%. It is worth noting that the new method can be widely applied to all types of heavy lift device driven by hydraulic cylinders.
机译：当液压挖掘机的悬臂下降时，在提升过程中积累的重力势能会通过液压阀的节流作用转化为热能并耗散，从而导致能源效率低下，液压油温度升高。必须安装冷却系统以降低温度，从而增加系统的成本和复杂性。为了解决上述问题，提出了一种基于三室液压缸的集成驱动和能量回收系统。在提出的系统中，三腔缸的一个腔室直接连接到液压蓄能器，以存储和再利用动臂的势能。其他两个腔室连接到主驱动电路。首先通过机械和液压系统的集成联合仿真研究提出的系统。通过仿真，验证了新系统的节能性能，并确定了液压蓄能器的初始压力。此外，新系统在6吨液压挖掘机上进行了测试，并将结果与​​双室液压缸驱动系统的结果进行了比较。测试结果表明，采用该系统，动臂的能耗降低了50.1％，电源的峰值功率降低了64.9％。值得注意的是，该新方法可广泛应用于液压缸驱动的所有类型的重型举升装置。

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  • 来源
    《Energy Conversion & Management》 |2018年第1期|680-687|共8页
  • 作者

    Xia Lianpeng; Quan Long; Ge Lei; Hao Yunxiao;

  • 作者单位

    Taiyuan Univ Technol, Minist Educ & Shanxi Prov, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Shanxi, Peoples R China;

    Taiyuan Univ Technol, Minist Educ & Shanxi Prov, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Shanxi, Peoples R China;

    Taiyuan Univ Technol, Minist Educ & Shanxi Prov, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Shanxi, Peoples R China;

    Taiyuan Univ Technol, Minist Educ & Shanxi Prov, Key Lab Adv Transducers & Intelligent Control Sys, Taiyuan 030024, Shanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Hydraulic excavator; Boom; Potential energy recuperation; Three-chamber hydraulic cylinder; Energy saving;

    机译：液压挖掘机;动臂;势能回收;三室液压缸;节能;

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