采煤机截割部振动特性分析

发布时间：2019-06-04 22:12

【摘要】：采煤机在工程过程中承受着复杂的载荷冲击,这会使得采煤机截割部出现复杂的振动现象,这种复杂的振动现象一方面会增加螺旋滚筒、摇臂壳体和齿轮传动机构等部件的工作负担,另一方面也会对采煤机的截割性能造成影响。为研究采煤机截割部的工作稳定性,采用集中参数建模法建立采煤机的竖直方向和水平方向振动数学方程,并利用Matlab对其进行求解,得到截割部外载荷作用下,处在不同工作角度时的时域和频域振动特性规律,然后利用刚柔耦合混合建模的方法,建立截割部的三维模型,利用Adams和Ansys联合对截割部的负载进行了动力学仿真分析,得到采煤机截割部动态响应。为研究采煤机截割部的动力学特性提供了新的方法,分析结果为改进采煤机截割部设计、提高其工作稳定性提供了依据。
[Abstract]:The shearer is subjected to complex load impact in the engineering process, which will make the cutting part of the shearer appear complex vibration phenomenon, this complex vibration phenomenon will increase the spiral drum on the one hand. On the other hand, the working burden of rocker arm shell and gear transmission mechanism will also affect the cutting performance of shearer. In order to study the working stability of the cutting part of the shearer, the mathematical equations of vertical and horizontal vibration of the shearer are established by using the centralized parameter modeling method, and the mathematical equations of the vertical and horizontal vibration of the shearer are solved by Matlab, and the external load of the cutting part is obtained. The vibration characteristics of the cutting part in time domain and frequency domain are analyzed at different working angles, and then the three-dimensional model of the cutting part is established by using the method of rigid-flexible coupling hybrid modeling, and the dynamic simulation analysis of the load of the cutting part is carried out by using the combination of Adams and Ansys. The dynamic response of the cutting part of the shearer is obtained. It provides a new method for studying the dynamic characteristics of the cutting part of the shearer, and the analysis results provide the basis for improving the design of the cutting part of the shearer and improving its working stability.
【作者单位】：辽宁工程技术大学机械工程学院;
【基金】：国家自然科学基金项目(51304107) 辽宁省教育厅项目(L2012118);辽宁省教育厅创新团队资助项目(LT2013009) 辽宁省煤矿液压技术与装备工程研究中心开放基金资助项目(CMHT-201206)资助~~
【分类号】：TD421.6

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