液压挖掘机动臂势能复合式再生系统的研究

发布时间：2018-04-14 01:29

本文选题：势能回收 + 节能回路　；参考：《液压与气动》2017年12期

【摘要】：为提高液压挖掘机的能量利用率,提出了一种新型复合式动臂势能回收方法。把动臂下落时的回油腔通过回转马达连接到1个蓄能器上,动臂下落时的势能一部分转化为蓄能器的液压能,在动臂提升时蓄能器的液压能转化为动臂的势能;一部分通过发电机转化为电能,储存在超级电容中。蓄能器的压力用来辅助驱动回转泵的转动,这样就可以减少回转马达功率的输入,通过调整马达的排量来控制动臂提升和下落的速度,利用2个液控单向阀来实现系统的保压。这种方法没有节流和溢流损失,回收效率高。通过仿真验证了方法的可行性,实现了动臂势能的回收,为动臂势能回收的实际应用提供了参考。
[Abstract]:In order to improve the energy utilization rate of hydraulic excavator, a new compound moving-arm potential energy recovery method is proposed.The return chamber is connected to an accumulator through a rotary motor. The potential energy of the arm is partly converted into the hydraulic energy of the accumulator, and the hydraulic energy of the accumulator is converted into the potential energy of the arm when the arm is hoisted.Part of it is converted into electricity through generators and stored in super capacitors.The pressure of the accumulator is used to drive the rotation of the rotary pump so as to reduce the input of the power of the rotary motor, to control the speed of lifting and falling of the arm by adjusting the displacement of the motor, and to use two hydraulic control one-way valves to realize the pressure preservation of the system.This method has no loss of throttling and overflow and high recovery efficiency.The feasibility of the method is verified by simulation, and the recovery of potential energy of the arm is realized, which provides a reference for the practical application of the potential energy recovery of the arm.
【作者单位】：贵州大学机械工程学院;贵州詹阳动力重工有限公司;
【基金】：贵州省科技厅重大科技专项(黔科合重大专项字[2016]3014) 创新基地项目(贵大研CXJD[2015]003)
【分类号】：TH137;TU621

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