全液压路面铣刨机铣刨系统动力学仿真

Dynamics simulation of milling system used in hydraulic milling machine

为提高全液压路面铣刨机铣刨鼓切削转速稳定性,建立了全液压路面铣刨机铣刨系统动力学模型和仿真模型,研究了影响铣刨鼓切削转速稳定性的因素,并对交变载荷作用下,铣刨液压系统设定溢流压力不同时的铣刨鼓切削转速特性进行了仿真。结果表明:发动机惯量对提高铣刨鼓在交变载荷作用下的切削转速稳定性具有重要作用;铣刨液压系统最大输出扭矩偏低时,在交变载荷作用下,铣刨液压系统频繁溢流,引起铣刨鼓切削转速剧烈波动。

To enhance the cutting speed stability of milling drum used in hydraulic milling machines,the dynamics and simulation model of the milling system is established,the factors which influence the cutting speed stability is analyzed,and the simulation is done for studying the cutting speed characteristic under the action of alternating load when the hydraulic system overflow pressure is different.The results indicate that the inertia of engine impacts the milling drum cutting speed stability significantly,and when the max output torque is set on a low level,milling drum cutting speed will fluctuate as the milling hydraulic system overflows frequently under the action of alternating load.1 tab,6 figs,9 refs.