电动叉车势能回收效率的影响因素研究

Research on Influence Factors of Potential Energy Recovery Efficiency in Electric Forklift

为了提高电动叉车势能回收效率,给出了势能回收系统各部件的数学模型及势能回收效率的数学模型,研究了电动叉车势能回收效率的影响因素。利用AMESim和Virtual.lab Motion软件进行了电动叉车势能回收系统仿真分析,最后通过实验来检验仿真模型的有效性和仿真结果的正确性。研究结果表明:电动叉车势能回收效率随着门架负载及液压马达排量的增大而增大,随着货叉下降速度、货叉下降加速度、液压马达转动惯量、升降油缸活塞面积及升降油缸运动部件质量的减小而增大。

In order to improve the potential energy recovery efficiency of electric forklift,mathematical models of components of the energy recovery system and the mathematical model of potential energy recovery efficiency were given,the influence factors of the potential energy recovery efficiency in electric forklift were studied. AMESim and Virtual.lab Motion software were used to analyze potential energy recovery system. Then through experiments,the effectiveness of computer simulation model and the accuracy of simulation results are tested. Research results show that the efficiency of potential energy recovery increases with the increase of the load and the displacement of hydraulic motor,and increases with the decrease of the falling speed,the falling acceleration,the rotational inertia of hydraulic motor,the piston area of hoist cylinder and the mass of hoist cylinder moving parts.