高速列车齿轮箱润滑性能优化与热平衡温度分析

Lubricant Performance Optimization and Thermal Balance Temperature Analysis of High-speed Train Gearbox

高速列车齿轮箱频发的润滑事故,理论计算了齿轮箱润滑所需润滑油量,采用流场仿真软件Fluent计算了不同浸油深度在不同转速下的有效润滑油量;优化了齿轮箱内部流道的结构,提高了有效润滑油量,并确定影响齿轮箱有效润滑油量的因素。理论计算了不同浸油深度下,搅油损失随着速度的变化情况,不同浸油深度下齿轮箱热平衡温度随着转速的变化情况。分析表明,齿轮箱流道液阻会使有效润滑油量降低,减小液阻能够提高齿轮箱的有效润滑油量;齿轮箱的有效润滑油量与搅油损失都会随着浸油深度增大而显著增大,随着转速的增大而增大;齿轮箱热平衡温度随着浸油深度增加而升高,随转速增大而升高。

Aiming at the frequent lubrication accidents of calculation of required volume of the the high -speed train gearbox, the theoretical carried out. The effective volume of gearbox by the Fluent. The flow field of the gearbox is il is increased, and the factors affecting on the lubrication oil on the specific immersion depth is also calculated optimized, and the effective volume of the gearbox lubrication oi effective volume of the gearbox lubrication oil are determined. The theoretical calculation of the changing situa- tion of stirring oil loss and the thermal equilibrium temperature of gearbox with the speed under different immer- sion depths is carried out. The analysis shows that the gearbox structure resistance reduced the effective volume of lubrication oil. The effective volume of lubrication oil and the churning losses of the gearbox increases with the immersion depth increases. The thermal balance temperature rises with the immersion depth increases or speed increases.