地铁齿轮箱滚动轴承温度影响因素的试验分析

Testing and analysis of rolling bearing temperature affected factor of subway railcar gearbox

地铁齿轮箱轴承温度将直接影响其使用性能和寿命。为此,对齿轮箱进行了部分试验,研究了影响轴承温度的各种因素。对比分析试验结果,轴承温升与其转速及所受转矩均成正比,在2 h内达到温度平衡,且轴承转速对其温度的影响要较转矩敏感。同等条件下,低油位运转时的轴承温度最高,高油位次之。这一分析为地铁齿轮箱的开发改进提供了试验依据。

Bearing temperature directly affects capability and lifetime in subway railcar gearbox. Some tests and studies are made on bearing temperature affected factors of gearbox. Base on the comparison and analysis, conclusions are reached that bearing tem- perature variation is in proportional with rotation speed and torque, and up to balance at 2 hours. Bearing rotation speed is more im- pressible than torque on temperature affection. Temperature is the highest with low oil capacity under same conditions, high oil capacity is secondary. This analysis provides an experimental foundation to the development and improvement of urban railcar gearboxes.