双钢轮振动压路机无级调频液压系统的仿真分析

Simulation Analysis of Stepless Frequency Modulation Hydraulic System for Double Steel Wheel Vibratory Roller

为了拓宽振动压路机的适用范围,提高振动压路机的压实性能,对振动压路机无级调频装置的调频原理进行了研究,并基于AMESim软件建立其仿真模型,对振动压路机的典型面层压实工况和变频压实工况进行仿真。结果表明:稳定压实工况下,无级调频液压系统的起振时间约为3 s,前后钢轮的振动频率差值不超过0.18 Hz,不会产生严重的拍振,说明该双钢轮振动压路机的面层压实与变频压实性能良好,为以后振动压路机的无级调频应用提供了理论依据和实验基础。

In order to broaden the application range and improve the compaction performance of vibratory roller,the stepless frequency modulation device's principle of vibratory roller is studied.Based on the software AMESim,a simulation model is established.And then typical surface layer compaction conditions and frequency conversion compaction conditions of vibratory roller are simulated.The simulation result shows that the start up time of the stepless frequency modulation hydraulic system is about 3 seconds,and the difference of vibration frequency between front and rear wheels is not more than 0.18 Hz under stable compaction condition.It shows that the performances of surface compaction and frequency conversion compaction for double steel wheel vibratory roller are good,which provides a theoretical and an experimental bases for application of stepless frequency modulation for vibratory roller.