采煤机扭矩轴可靠性分析与优化设计
发布时间：2018-08-11 13:20
【摘要】：作为保护采煤机关键零部件的扭矩轴,其性能对采煤机的可靠性与使用寿命有重大影响。建立以扭矩轴、摇臂壳体、截割部行星轴和行星架为模态中性文件的采煤机刚柔耦合虚拟样机模型,结合实际工况,基于项目组开发的"采煤机载荷模拟程序"计算获得了采煤机滚筒的载荷文件,通过Adams仿真得到了扭矩轴的最大剪切应力和扭转位移及时刻。基于神经网络和可靠性灵敏度理论得到了扭矩轴剪切应力与位移对卸荷槽结构参数的灵敏度。以采煤机牵引速度和扭矩轴剪切应力与位移为约束条件,对卸荷槽进行优化设计,结果表明:当采煤机牵引速度大于12.236 7 m/min时,扭矩轴及时断裂,提高了采煤机的可靠性与使用寿命。
[Abstract]:As a torque shaft to protect the key parts of shearer, its performance has great influence on the reliability and service life of shearer. A rigid-flexible coupling virtual prototype model of shearer with torque shaft, rocker shell, cutting part planetary shaft and planetary frame as modal neutral file is established. Based on the "load simulation program" developed by the project team, the load file of the shearer drum is obtained, and the maximum shear stress, torsional displacement and time of the torque axis are obtained by Adams simulation. Based on the neural network and reliability sensitivity theory, the sensitivity of shear stress and displacement of torque axis to the structural parameters of unloading slot is obtained. Based on the shear stress and displacement of the shearer's traction speed and torque shaft, the optimum design of the unloading slot is carried out. The results show that the torque shaft breaks in time when the shearer's traction speed is greater than 12.236 7 m/min. The reliability and service life of shearer are improved.
【作者单位】： 辽宁工程技术大学机械工程学院;
【基金】：中国煤炭工业科技计划项目(MTKJ2009-264)资助~~
【分类号】：TD421.6
本文编号：2177113
[Abstract]:As a torque shaft to protect the key parts of shearer, its performance has great influence on the reliability and service life of shearer. A rigid-flexible coupling virtual prototype model of shearer with torque shaft, rocker shell, cutting part planetary shaft and planetary frame as modal neutral file is established. Based on the "load simulation program" developed by the project team, the load file of the shearer drum is obtained, and the maximum shear stress, torsional displacement and time of the torque axis are obtained by Adams simulation. Based on the neural network and reliability sensitivity theory, the sensitivity of shear stress and displacement of torque axis to the structural parameters of unloading slot is obtained. Based on the shear stress and displacement of the shearer's traction speed and torque shaft, the optimum design of the unloading slot is carried out. The results show that the torque shaft breaks in time when the shearer's traction speed is greater than 12.236 7 m/min. The reliability and service life of shearer are improved.
【作者单位】： 辽宁工程技术大学机械工程学院;
【基金】：中国煤炭工业科技计划项目(MTKJ2009-264)资助~~
【分类号】：TD421.6
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