KRG齿轮油在动车组齿轮箱中的可靠性研究

Reliability of KRG Gear Oil in Electric Multiple Unit Gearbox

齿轮箱是高速动车组动力转向架上的核心部件,齿轮箱工作性能的好坏直接影响到动车组列车运行的安全性和可靠性,是我国高铁跑出世界速度的重要保障。KRG齿轮油可靠性考察选用CRH380A型动车组,最高运营时速达到300 km/h,运营线路为福州至上海虹桥。CRH380A运行条件的复杂性和动车组齿轮箱本身高温、高转速的工况特点,对润滑油性能提出了严苛的要求。昆仑KRG 75W-80齿轮油通过60万千米CRH380A型动车组的行车考察研究,表明其具有良好的氧化稳定性、抗磨耐久性、密封材料适应性,可为CRH380A型动车组齿轮箱提供良好的润滑保护。

Gearbox is the core component of the power bogie of high-speed electric multiple unit(EMU),and its performance directly affects the safety and reliability of the EMU,so gearbox is one of key factors that guarantee Chinese high-speed trains running at the fastest speed in the world.The CRH380A EMU,which runs from Fuzhou to Shanghai Hongqiao at a speed up to 300 km/h,was selected to investigate the reliability of the KRG 75W-80(or KRG)gear oil.The complex operating conditions of CRH380A and the characteristics of the high-temperature and high-speed operating conditions of its gearbox raise stringent requirements on the performance of lubricant.The test of KRG gear oil in CRH380A running for 600,000 kilometers shows KRG gear oil’s good oxidation stability,anti-wear durability and adaptability to sealing materials.It is proved that KRG gear oil can provide a good lubrication protection for the gearbox of CRH380A EMU.