接地棒辅助钻机振动特性分析  

Analysis of vibration characteristics of ground rod auxiliary drilling rig

作　　者：王学军[1] 熊金金 WANG Xuejun;XIONG Jinjin(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500

出　　处：《振动与冲击》2023年第8期152-159,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(52165013,51565021);国家重点研发计划项目(2017YFC1702503)。

摘　　要：为分析接地棒辅助钻机工作过程中的振动并对其改进。建立接地棒辅助钻机的仿真模型,进行参数设置,对接地棒辅助钻机进行整机模态分析,得到整机的固有频率及振型,使用有限元分析法对接地棒辅助钻机进行瞬态动力学分析,得到不同电机转速、不同载荷下机器的振动加速度与频谱。通过整机动态信号测试,得出各个测点的振动加速度与频谱。仿真结果与试验结果对比,吻合度较高。仿真与试验结果表明电机转速对接地棒辅助钻机振动特性影响较大,载荷对其影响较小。对接地棒辅助钻机进行减振优化,对比优化前后的接地棒辅助钻机的振动加速度幅值与应力应变,结果表明,该优化方案对机器的减振是有效的,提高了接地棒辅助钻机工作的稳定性与使用寿命。In order to analyze the vibration during the working process of a ground rod auxiliary drilling rig and improve it,a simulation model of the ground rod auxiliary drilling rig was established.By setting parameters,the modal analysis of the ground rod auxiliary drilling rig was carried out to obtain the natural frequency and mode shape of the whole machine,and the transient dynamics of the ground rod auxiliary drilling rig was carried out using the finite element analysis method.Through analysis,the vibration acceleration and frequency spectrum of the machine under different motor speeds and different loads were obtained.Through the dynamic signal test of the whole machine,the vibration acceleration and frequency spectrum of each measuring point were obtained.Simulation results are in good agreement with the experimental results.The simulation and experimental results show that the motor speed has great influence on the vibration characteristics of the ground rod auxiliary drilling rig,while the load has little influence on it.The vibration reduction optimization of the ground rod auxiliary drilling rig was carried out,and the vibration acceleration amplitude and stress strain of the ground rod auxiliary drilling rig before and after optimization were compared.

关 键 词：接地棒 瞬态动力学 模态仿真 振动特性 

分 类 号：TH138[机械工程—机械制造及自动化]