Characteristic Analysis of Walking System of High Energy Efficiency Electro-Hydraulic Hybrid Drive Loader
In the process of frequent starting and braking of pure electric drive loader,there is a serious waste of kinetic energy and potential energy.To solve the problem,a high energy efficiency electro-hydraulic hybrid loader walking system was proposed.Servo motor and hydraulic drive unit were used to form a hybrid power source to drive the loader walking,and the system kinetic and potential energy was recovered through the accumulator and hydraulic pump/motor during braking.By elaborating the working principle of the system,de-signing the control strategy of the system and optimizing and matching the parameters of the key components,the electromechanical and hydraulic multidisciplinary joint simulation model of the proposed system was constructed on the SimulationX simulation platform,and the system was simulated and analyzed under common working conditions.The results show that compared with the existing pure electric drive walking system with the highest energy efficiency,the proposed system can reduce energy consumption by 23.3％,and the recovery efficiency of kinetic and potential energy during braking can reach 66.4％.
万方数据
维普
