液压挖掘机作为一种重要的施工机械,人们对它的质量优良、作业性能完善和生产效率高的需求更加迫切,因此各国挖掘机行业为占领市场都进行有关挖掘机高新技术的研究和开发,因为机械装置已经基本定型,所以电子技术、传感技术、计算机技术和电液比例技术在挖掘机上的应用研究已经成为现在挖掘机的主要研究方向。 As an important construction machinery, hydraulic excavator is more urgent for its high quality, perfect working performance and high production efficiency. Therefore, the excavator industry in various countries conduct research and development on the high and new technology of excavators for occupying the market, Because the mechanical device has been basically stereotyped, the application research of electronic technology, sensor technology, computer technology and electro-hydraulic proportional technology on the excavator has become the main research direction of the excavator nowadays.