摘要
为研究和改善旋挖钻机变幅机构的动力学性能,采用牛顿-欧拉法建立了一种新型变幅机构的动力学数学模型,在Simulink平台上构建基于Matlab函数的动力学仿真模型,并对该新型变幅机构的2种细分类型各在2种钻桅姿态下的变幅过程进行仿真和特性分析,进而对新型变幅机构和经典变幅机构的动力学性能进行对比分析。研究结果表明:新型变幅机构中动臂位于连杆上方的机构的动力学性能优于动臂位于连杆下方的机构;进一步和经典变幅机构中综合动力学性能最优的动臂位于连杆上方、动臂变幅油缸上撑动臂的机构相比较,则经典型的动力学性能较优。文中研究成果为旋挖钻机变幅机构的设计和动力学性能改善奠定了理论基础。
A mathematical model based on Newton-Euler method was established for a new mast link frame system, and a simulation model of mast link frame system was built up with Maflab toolbox in Simulink. After that, the new mechanism was simulated and analyzed in comparison with traditional mast link frame system. The simulation results show that the dynamic behavior is better for the new system with lift-arm above connecting rod than that of liftarm below connecting rod. However,when compared with the traditional system with lift-arm above connecting rod and hydraulic cylinder, the traditional mechanism shows much better performance.
出处
《机械设计》
CSCD
北大核心
2014年第11期97-100,107,共5页
Journal of Machine Design
基金
湖南省自然科学基金资助项目(13JJ6034)
湖南省教育厅资助科研资助项目(12C62)
湖南师范大学青年优秀人才培养计划资助项目(ET12507)
