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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。
In order to study and improve the dynamic performance of rotary drilling rig luffing mechanism, a dynamic mathematical model of a new luffing mechanism was established by Newton-Euler method. On the Simulink platform, a dynamic simulation model based on Matlab function was built. The simulation and characterization of the luffing process of the two kinds of subdivision type of the new luffing mechanism under the two kinds of drilling mast attitude are carried out. Then, the dynamic performance of the new luffing mechanism and the classic luffing mechanism is compared and analyzed. The results show that the dynamic performance of the mechanism with the boom located above the connecting rod in the new luffing mechanism is superior to the mechanism with the boom located below the connecting rod. Further, compared with the boom with the optimal dynamic performance in the classic luffing mechanism, Above the rod, boom luffing cylinder on the boom arm mechanism compared to the classic dynamic performance is better. The research results in this paper have laid a theoretical foundation for the design and dynamic performance improvement of rotary drilling rig luffing mechanism.