基于液压变压器的液压挖掘机节能研究

针对液压挖掘机阀控液压系统能量利用效率低的问题,提出一种基于液压变压器的液压节能系统,并对其节能效果进行研究。分别在AMESim和AMESim-MATLAB环境下对阀控液压系统和基于液压变压器的液压节能系统的能耗进行研究;对阀控液压系统和液压节能系统的能量利用效率和节能效果进行对比分析。结果表明:采用液压变压器作为主要控制元件的液压节能系统具有较好的动态性能,且能量利用率相对于阀控液压系统有显著提高,节能效果优良,可为液压挖掘机的节能优化改进、降低系统的装机功率提供参考。

Research on Energy saving of Hydraulic Excavator Based on Hydraulic Transformer

In order to solve the problem of the low energy utilization efficiency of valve controlled hydraulic system of hydraulic excavator, a hydraulic energy saving system based on hydraulic transformer was proposed and its energy saving effect was researched. The energy consumption of the valve controlled hydraulic system and the hydraulic energy saving system based on the hydraulic transformer were researched by using AMESim and AMESim-MATLAB respectively; the energy utilization efficiency and energy saving effect of the valve controlled hydraulic system and the hydraulic energy saving system were compared and analyzed. The results show that the hydraulic energy saving system using hydraulic transformer as the main control element has relatively good dynamic performance, and the energy utilization rate is significantly improved compared with the valve controlled hydraulic system, and the energy saving effect is excellent, which can provide reference for the energy saving optimization of hydraulic excavator and the reduction of the installed power of the system.