本文以望云煤矿使用的MG450/1050-WD型采煤机的长螺杆结构为研究对象，针对其因共振引发的疲劳失效问题，建立了仿真分析模型。通过模态分析、谐响应分析和疲劳分析，确定了长螺杆在94 Hz和153 Hz条件下存在共振与疲劳失效风险。基于此，提出了增加橡胶块的减振优化设计方案。优化后的长螺杆结构各部分的疲劳寿命显著改善，验证了减振方案的可行性。

 In this paper, the long screw structure of MG450/1050-WD shearer used in Wangyun Coal Mine is taken as the research object. Aiming at the fatigue failure problem caused by resonance, a simulation analysis model is established. Through modal analysis, harmonic response analysis and fatigue analysis, it is determined that the long screw has the risk of resonance and fatigue failure under the conditions of 94 Hz and 153 Hz. Based on this, an optimized design scheme for vibration reduction by adding rubber blocks is proposed. The fatigue life of each part of the optimized long screw structure is significantly improved, which verifies the feasibility of the vibration reduction scheme.