Research On Energy-Saving Character Of Hydraulic Excavator's Rotation System Based On Energy Recovery And Reuse

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.