【摘要】：本文為了研究采煤機截割部動力學特性及其對截割性能的影響,在總結前人對煤巖截割機理、采煤機的截割性能和截割部動力學等方面科研成果的前提下,從截齒對煤巖的截割機理及單個截齒的受力分析入手,進而研究采煤機螺旋滾筒的負載特性和截齒的運動學特性；考慮搖臂彈性變形的影響,運用集中參數(shù)建模方法,研究更能真實反映采煤機截割部的振動特性的模型構造方法,并對不同工作位置時的位移響應和頻率響應特性進行了數(shù)值分析；以多柔體系統(tǒng)動力學動力學為理論基礎,運用虛擬仿真平臺ADAMS. ANSYS和MATLAB聯(lián)合搭建了采煤機截割部的三維仿真模型,運用ADAMS/Vibration模塊對截割部進行模態(tài)特性分析,并對搖臂的各連接鉸耳的動態(tài)響應特性做了初步研究；通過對采煤機截割部動力學特性的總結,并將其振動特性引入到截齒運動參數(shù)和滾筒負載特性的研究中,分析了截割部振動特性對截齒運動特性和滾筒負載的影響。
[Abstract]:In this paper, in order to study the dynamic characteristics of cutting part of shearer and its influence on cutting performance, on the premise of summing up the scientific research achievements in the aspects of cutting mechanism of coal and rock, cutting performance of shearer and cutting part dynamics, etc. Based on the analysis of the cutting mechanism of coal and rock and the force of a single cutter, the load characteristics and kinematic characteristics of the helical drum of the shearer are studied. Considering the effect of elastic deformation of rocker arm, the method of modeling with concentrated parameters is used to study the model construction method, which can reflect the vibration characteristics of cutting part of shearer more truthfully. The characteristics of displacement response and frequency response at different working positions are analyzed numerically. Based on the theory of multi-flexible system dynamics, the virtual simulation platform ADAMS. is used. The 3D simulation model of cutting part of shearer is built by ANSYS and MATLAB. The modal characteristic of cutting part is analyzed by ADAMS/Vibration module, and the dynamic response characteristics of each joint hinge of rocker arm are studied preliminarily. By summarizing the dynamic characteristics of cutting part of shearer and introducing its vibration characteristics into the research of gear cutting motion parameters and drum load characteristics, the influence of cutting part vibration characteristics on the tooth cutting motion characteristics and cylinder load is analyzed.
【學位授予單位】：遼寧工程技術大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD421.6

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