采煤机截割部机电传动系统动力学特性分析

发布时间：2018-04-23 01:12

本文选题：采煤机截割部 + 机电传动系统　；参考：《机械工程学报》2016年07期

【摘要】：针对采煤机截割机电传动系统动载荷大易于损坏的特点,提出一个行星齿轮变速过程扭转动力学模型,建立包含电动机、齿轮传动系统和滚筒的采煤机截割机电传动系统动力学模型,并对冲击载荷下采煤机截割机电传动系统的动力学特性进行仿真,研究电动机-齿轮传动系统的连接刚度和阻尼以及齿轮啮合刚度对采煤机截割机电传动系统动力学特性的影响,最后提出了减小采煤机截割部机电传动系统的动态啮合力冲击的方法,以减少采煤机截割传动系统的破坏。啮合冲击力可以分成两类:时变啮合刚度引起的啮合冲击力和冲击负载引起的啮合冲击力。可以通过减少啮合刚度的变化(比如采用人字齿轮)来降低时变啮合刚度引起的动态啮合力冲击;选取合适的电动机-齿轮传动系统连接阻尼和较小的电动机-齿轮传动系统连接刚度来减小冲击负载引起的动态啮合力冲击。
[Abstract]:In view of the characteristics that the dynamic load of cutting electromechanical transmission system of shearer is large and easy to damage, a torsional dynamic model of planetary gear changing process is proposed, which includes motor. The dynamic model of cutting electromechanical transmission system of shearer and the dynamic characteristics of cutting electromechanical transmission system of shearer under impact load are simulated. The influence of the connection stiffness and damping of the motor-gear transmission system and the gear meshing stiffness on the dynamic characteristics of the cutting electromechanical transmission system of the shearer is studied. Finally, the method of reducing the dynamic meshing force impact of the electromechanical transmission system of the cutting part of the shearer is put forward to reduce the damage of the cutting transmission system of the shearer. The meshing impact force can be divided into two categories: the meshing impact force caused by time-varying meshing stiffness and the meshing impact force caused by impact load. The dynamic meshing force shock caused by time-varying meshing stiffness can be reduced by reducing the change of meshing stiffness (for example, using herringbone gear). In order to reduce the dynamic meshing force shock caused by impact load, appropriate connection damping of motor gear transmission system and small connection stiffness of motor gear transmission system are selected.
【作者单位】：重庆大学机械传动国家重点实验室;
【基金】：国家重点基础研究发展计划资助项目(973计划,2014CB046304)
【分类号】：TD421.6

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