基于周期性激励的采煤机机电液截割传动系统特性分析

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (3) : 217-222.

论文

杨阳1 2 袁瑷辉1 李国伟1

作者信息 +

Dynamic characteristics of electro-mechanical-hydraulic cutting transmission system of a coal cutter under periodic excitations

YANG Yang1 2 YUAN Ai-hui1 Li Guo-wei1

Author information +

文章历史 +

摘要

针对现有采煤机截割部齿轮传动链长，适应性差的问题，提出一种采用根据采煤机机电液截割传动系统的结构特点，考虑柱塞泵的流量脉动和齿轮传动系统的时变刚度，建立了液压泵-液压马达驱动截割滚筒的短程传动方案。设计选用合理的动力传动形式，并建立包括泵和齿轮在内的传动系统机电液耦合模型。以流量脉动作为齿轮传动系统外部激励，以时变啮合刚度作为齿轮传动系统内部激励，基于内外部激励对采煤机机电液截割传动系统进行特性分析分析了齿轮传动系统的振动特性。结果表明，考虑泵流量脉动后，马达输出呈现转矩脉动并影响到对齿轮系统振动与动力学特性都有影响，且；时变啮合刚度和流量脉动作为内外部激励是影响齿轮系统动力学特性的主要因素会对传动系统的振动特性产生叠加的效果；考虑泵流量脉动后，马达输出呈现转矩脉动，截割传动系统总效率下降。。

Abstract

According to structural characteristics of electro-mechanical-hydraulic cutting transmission system of a coal cutter, an electro-mechanical-hydraulic coupled model was built for the transmission system including gears and pumps with flow fluctuation of piston pumps as the system’s external excitation and time-varying meshing stiffness of gear pairs as the system’s internal excitation. Then dynamic characteristics of the transmission system were analyzed under the external excitation and internal one. The results showed that the flow fluctuation of pumps affects vibrational and dynamic characteristics of the transmission system; as external excitation, the flow fluctuation is the main factor affecting the system’s dynamic characteristics; after considering the flow fluctuation, the motor output reveals torque fluctuation, the total efficiency of the cutting transmission system drops.

导出引用

杨阳1 2 袁瑷辉1 李国伟1. 基于周期性激励的采煤机机电液截割传动系统特性分析[J]. 振动与冲击, 2018, 37(3): 217-222

YANG Yang1 2 YUAN Ai-hui1 Li Guo-wei1. Dynamic characteristics of electro-mechanical-hydraulic cutting transmission system of a coal cutter under periodic excitations[J]. Journal of Vibration and Shock, 2018, 37(3): 217-222

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