掘进机回转台功能分析及绞耳优化改进研究
乔红伟
（晋能控股煤业集团盖州煤矿，山西 高平 048400）
摘要： 为解决悬臂式掘进机回转台绞耳易撕裂的问题，以EBZ220SZD800/11G 型掘进机回转台绞耳为例，介绍了回转
台的功能及其在应用中存在的问题，创建了回转台模型，借助仿真软件分析了回转台工作时应力、应变的具体分布情况。
由分布结果发现，回转台升降绞耳处易出现应力集中现象。对此提出了具体改进措施，进一步增加回转台升降绞耳的厚
度，回转台升降绞耳不再出现明显的应力集中现象，绞耳不再发生撕裂，且绞耳工作稳定可靠，取得了较好的改进效果。
关键词： 悬臂式掘进机；回转台；升降绞耳；应力集中
中图分类号： TD421.5     文献标识码： A     文章编号： 2095-0802-(2022)04-0091-03
Function Analysis of Roadheader Truntalbe and Research on Optimizing Improvement of
Twisting Ears
QIAO Hongwei
(Gaizhou Coal Mine, Jinneng Holding Coal Industry Group, Gaoping 048400, Shanxi, China)
Abstract: In order to solve the problem of easy tearing of the truntalbe ear of the cantilever roadheader, taking the truntalbe ear
of the EBZ220SZD800/11G type roadheader as an example, this paper introduced the functions of the truntalbe and the problems
existing in its application, established a truntalbe model, and analyzed the specific distribution of stress and strain when the
truntalbe was working with the help of simulation software. From the distribution results, it is found that stress concentration is
easy to occur at the elevator-ears of the truntalbe. In this regard, specific improvement measures were put forward to further
increase the thickness of the elevator -ears of the truntalbe. There was no obvious stress concentration phenomenon in the
elevator-ears of the truntalbe, the twisting ears were no longer torn, and the working of the twisting ears was stable and reliable.
The optimization improvement achieved good improvement effect.

Key words: cantilever roadheader; truntalbe; elevator-ear; stress concentration