矿用防爆柴油机曲轴系扭振的仿真研究  

Study on Torsional Vibration Simulation of Crankshaft System in Mine Flameproof Diesel Engine

作　　者：王晓 

机构地区：[1]中国煤炭科工集团太原研究院有限公司,山西太原030006

出　　处：《煤炭工程》2014年第1期132-134,共3页Coal Engineering

摘　　要：针对矿用防爆柴油机出现的曲轴断裂现象,以某型防爆柴油机曲轴系为例,使用动力学仿真软件建立了由多个自由度组成的防爆柴油机柔性体动力学系统模型,并进行了柔性体的曲轴系受力和扭振响应分析。结果表明曲轴扭振最大峰值都出现在最大扭矩转速1700r/min左右,而此点也是其主要工作点,容易发生共振现象,导致曲轴扭断。然后通过振动试验验证了曲轴扭振的最大峰值也出现在此点,和仿真分析的结果是相近的,说明了该仿真分析方法是一条行之有效的方法,并且为解决防爆柴油机曲轴断裂现象提供了理论支持。According to the crankshaft broken phenomenon occurred in the mine flameproof diesel engine, taking a crankshaft system of a mine flameproof diesel engine as a case, a dynamics simulation software was applied to establish a flexible body dynamics system model of a mine flameproof diesel engine consisted with several freedoms and an analysis was conducted on the stress and torsional vibration response of the flexible body crankshaft system. The results showed that a max torsional vibration peak of the crankshaft was appeared at a max torsion point at about 1700 r/min, the torsion point also was the main working point, a resonance phenomenon would be easily occurred and the crankshaft broken would be caused. The vibration test was applied to prove the max torsional vibration peak of the crankshaft also was appeared at this point. The vibration test was similar to the results of the simulation analysis. All those showed that the simulation analysis method could be a practical and effective method and could provide theoretical support to solve the crankshaft broken phenomenon of the mine flameproof diesel engine.

关 键 词：防爆柴油机 多体动力学 柔性体 曲轴系 扭振 

分 类 号：TH133.2[机械工程—机械制造及自动化]