摘要
为研究采煤机截割含夹矸煤岩过程中的振动特性,采用EALINK软件实现EDEM-ADAMS双向耦合,以考虑煤岩变形对截割过程的影响;将摇臂壳体进行柔性化处理,基于耦合结果在ADAMS/Vibration模块中进行采煤机截割部受迫振动分析。结果表明:采煤机螺旋滚筒在竖直方向的振动加速度大于采煤机牵引及滚筒截深方向的振动加速度;频率为20.58 Hz时,采煤机螺旋滚筒竖直方向的加速度达到最大值为42.566 mm^(2)/s;频率为20.39 Hz时,壳体质心位移响应达到最大值为14.93 mm;模态参与程度分析表明冲击载荷竖直方向的分力对壳体质心位移变形的贡献大于牵引方向和滚筒截深方向的贡献。仿真结果可以为采煤机结构件优化设计、振动抑制及安全生产评价提供理论依据。
In this article,order to explore the vibration characteristics of the shearer during the cutting of coal and rock with entrapment,the EALINK software is adopted to realize the two-way coupling of EDEM-ADAMS and identify the influence of coal and rock deformation on the cutting process.Based on the coupling results,the analysis on the forced vibration of the shearer’s cutting section is conducted in the ADAMS/Vibration module.The results show that the vibration acceleration of the shearer’s spiral drum in the vertical direction is greater than the that of the shearer’s traction and the drum cutting depth;at a frequency of 20.58 Hz,the vertical acceleration of the shearer’s spiral drum reaches the maximum of 42.566 mm^(2)/s;when the frequency is 20.39 Hz,the maximum displacement of the shell’s center of mass is 14.93 mm;the analysis on modal participation shows that,the force of the impact load in the vertical direction contributes more to the displacement of the shell’s center of mass than both its counterparts in the pulling direction and in the roller’s depth direction.The simulation results provide theoretical basis for the optimization design of the shearer’s structural parts,vibration suppression and evaluation of safety production.
作者
赵丽娟
孙国强
ZHAO Li-juan;SUN Guo-qiang(School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000)
出处
《机械设计》
CSCD
北大核心
2021年第2期29-34,共6页
Journal of Machine Design
基金
国家自然科学基金资助项目(51674134)
辽宁省自然科学基金资助项目(20170540420)。
