纵轴式掘进机回转台有限元分析

Finite element analysis of longitudinal roadheader's rotary table

回转台作为纵轴式掘进机运行时的重要部件,在巷道掘进的过程中受到来自截割头不同方向变化载荷的冲击。为研究回转台的工作可靠性,本文以EBZ 220掘进机回转台作为研究对象,利用有限元分析软件对回转台进行静力学分析,找出了不同工况条件下掘进机回转台应力集中和变形较大的位置,其中当掘进机截割部在最高位置自左到右截割至中位时回转台所受应力和变形较大,应力集中及较大变形区域主要集中在与截割臂铰接耳架的拐角处。研究结果可为掘进机回转台的结构优化设计及可靠性的提高提供一定的参考。

As an important part of the longitudinal roadheader,the rotary table is impacted by varying loads from different directions of the cutting head in the process of roadway excavation.In order to study the working reliability of the roadheader,this paper takes the rotary table of the EBZ 220 roadheader as the research object,the static analysis image of the rotary table is carried out by using the finite element analysis software,and the positions of stress concentration and deformation are found out under different working conditions.When the cutting arm of the roadheader cuts from left to right to the middle position,the stress and deformation of the rotary table are large,and the stress concentration and large deformation area are mainly concentrated in the hinged ear frame with the cutting arm.The research results can provide some reference for the structure optimization design and reliability improvement of rotary table.