Matching Research Based On The Key Components Of The Hydraulic Hybrid Excavator Slewing System

Along with the development of the Times, the progress of the human with energy drying up. After entering the industrial civilization, this kind of contradiction is more highlight. Engineering machinery play an irreplaceable role in the production and the life of human. As the same time, large energy consumption and emissions are both bothering people all the time, to a certain extent, also hindering its application in some areas. As a kind of typical engineering machinery, at present most of the excavator has adopted hydraulic transmission technology, the theme of development is the energy saving and environmental protection. The objective factors of the existing technology and application have been mature and high cost of new technologies, the research of energy conservation are more and more difficult to major breakthroughs. Engineering machinery play an irreplaceable role in the production and the life of human. In the automotive field, the research of energy conservation started relatively early. Represented by energy regeneration technology of hybrid technology has relatively mature.The article introduced the ideas of "renewable energy" the energy saving research of excavator. Firstly, need to study the traditional excavator slewing device structure, operating mode and control strategy. As a kind of typical engineering machinery, at present most of the excavator has adopted hydraulic transmission technology, the theme of development is the energy saving and environmental protection. Adopted hydraulic accumulator as the energy recovery unit and auxiliary power unit. The proposed based on the system structure of the hydraulic hybrid technology, and researched the control strategy of the new system. Because the maximum recycling energy and lower installed cost of two constraints are mutually contradictory, maximum limit to recycling and energy balance between the smallest cost. In this paper, matched the parameter of the engine rated power and the accumulator. Make the recover energy and the engine power output ratio maximization objective function as optimization, advocate complementary power supply output power meet the load demand, minimizing the engine rated power and the accumulator volume as constraint. In the automotive field, the research of energy conservation started relatively early. Parameter matching is realized by using genetic algorithm. The results of the parameter matching, parameters meet the demand of working condition of the original system. Using hybrid excavator slewing device technology, operating has higher stability, higher efficiency and less energy consumption. The rate of energy regeneration was48.4%, the rate of energy saving was11.2%.