【作者】 于斌；

【导师】 姜继海；

【作者基本信息】 哈尔滨工业大学 ， 机械电子工程， 2011， 硕士

【摘要】 随着世界经济的高速发展,人类正在面临着前所未有的挑战。在这些挑战当中,能源危机无疑是很具代表性也非常严峻的一个。为应对能源危机,世界各国出台了相关政策大力发展节能,中国更是将节能列入发展规划之中。为了保证节能工作的全方面展开,并为国家乃至人类共同的节能事业贡献一份绵力,本论文针对一类应用非常广泛、能量浪费很严重的工程机械——液压挖掘机——的回转系统展开了节能研究。在查阅国内外大量的相关文献的基础上,分析和比较了当前液压挖掘机中应用的节能措施,将一种基于能量回收再利用的节能技术引入到液压挖掘机的回转液压系统中,配置了一种新型的基于能量回收再利用的液压挖掘机回转液压系统,针对此液压系统的节能性展开了研究。通过建立数学模型和计算机仿真的方法,对于相关的液压系统参数和相关工作条件对此回转液压系统的节能性的影响进行了探讨。通过模拟实验的方法对仿真研究的结果进行了验证,为所提出的基于能量回收再利用的液压挖掘机回转液压系统的应用积累了实验数据支持。本论文的完成为液压挖掘机的节能提供了重要的理论支持和实践指导,文中配置的液压挖掘机回转液压系统同样可以应用到任何具有频繁起制动工况的工程机械或其它机械的回转液压系统中,具有普遍的节能意义。更多还原

【Abstract】 With the world’s economy developing rapidly, mankind is facing unprecedented challenge now. Among these challenges, energy crisis is undoubtedly a very representative and serious one. In response to the energy crisis, many countries put forward responded policies to develop energy saving, and PRC even puts energy saving into its development planning. To insure the energy saving improve in every aspect, and to contribute my limited power to the energy saving development of our country and even the mankind, research on the energy saving of the rotation system of a class of widely used and badly wasted construction machinery, the hydraulic excavator, is carried out.Based on abundant research reports from home or abroad, the current application of hydraulic excavators’energy saving methods were analyzed and compared. An energy saving method based on energy recycling and reusing was introduced into the hydraulic excavator. A new hydraulic rotation system of the hydraulic excavator based on energy recycling and reusing was put forward, and its energy saving character was researched. By establishing the mathematics models and simulating, the effects of relevant parameters and working conditions on the energy saving character of this hydraulic system was discussed. And the simulation results were validated by means of experimental research, which offered the application of the rotation hydraulic system on the hydraulic excavators some experimental support.The completion of this thesis offered the hydraulic excavator research important theoretical support and practical guidance. The rotation hydraulic system put forward in this thesis could also be used in the rotation system of any other machinery that works with frequent starts and stops, which would have a universal energy saving significance.更多还原