井下有轨机车齿轮箱体动态特性仿真分析及优化

Simulation Analysis and Optimization of Dynamic Characteristics of Gearbox Body of Underground Railway Locomotive

以矿用14 t锂电式CJY14/6、7、9G-LD型有轨电机车行走齿轮箱体为研究对象,建立其三维模型,并将三维模型导入ANSYS有限元分析软件进行动态特性分析。确定在不同电机转速下,均因箱内齿轮传动振动引发和齿轮箱体的共振,在电机转速2 000 r/min下,箱体振动剧烈,易引发箱体失效。通过对齿轮箱体拓扑优化,在箱体中间薄壁处重新设计加强肋,结果表明优化后箱体抗振性能有一定程度的改善,其中在电机转速2 000 r/min下箱体抗振性能大幅提高,达到优化目的。

Taking the 14 t lithium-ion battery CJY14/6、7、9G-LD type railway electric locomotive traveling gearbox body as the research object, established a three-dimensional model, and importd the three-dimensional model into ANSYS finite element analysis software for dynamic characteristics analysis. It was determined that at different motor speeds, the resonance of the gearbox body was caused by the gear transmission vibration in the box. The box body vibrates violently at the motor speed of 2 000 r/min, which easily causes the box body to fail. By topology optimizing the gearbox body and redesigning the stiffeners at the thin wall in the middle of the box body, the results show that the antivibration performance of the box body has been improved to a certain extent after the optimization. The anti-vibration performance of the box body is greatly improved at 2 000 r/min so as to achieve the optimization purpose.