摘要:
煤矿用全液压钻机动力头主要采用液压驱动和齿轮传动相结合的方式,其中,齿轮传动的振动烈度直接影响着动力头的输出能力,成为了设计中必须考虑的重要问题。以ZYWL-2600R型松软煤层螺旋钻机为研究对象,在齿轮副的单自由度扭转振动模型基础上,以啮合线上的振动加速度为优化目标,建立了动力头齿轮副的动态优化设计模型,并借助Matlab优化工具箱和GUI工具开发了优化设计程序的图形界面,求解了齿轮振动最小的宏观设计参数,为钻机“高速”动力头的动态优化设计提供了参考。结果表明,优化后齿轮副的时变啮合刚度显著提高,有效改善了齿轮传动的振动特性。
Abstract:
All hydraulic drill power-head used in coal mine is mainly composed of hydraulic motor and gearbox, and the vi-bration intensity of gear transmission directly affects the output capability of power-head.Take ZYWL-2600R soft coal seam spiral drill as the research object, on the basis of single degree of freedom torsion vibration model of gear pair, the vi-bration acceleration of meshing line as optimization objective, a dynamic optimization design model of power-head gear pair is established and the graphical interface of the optimization program is developed with the help of Matlab optimization toolbox and GUI tools to figure out the minimum macroscopic design parameters of vibration, which provides the reference to dynamic optimization design of high speed drill power-head.The results show that the gear mesh stiffness of the optimized gear pair is significantly increased accompanied with the effective improvement of vibration characteristics of gear transmission.
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