摘要
为精确、快速地获取操作过程中高速列车齿轮箱中复杂内部流场的真实运动和分布状态,通过合理简化高速动车组驱动齿轮箱的三维模型,采用运动粒子仿真(Moving Particle Simulation,MPS)开展仿真分析。基于箱体内部油液不同瞬时分布状态,研究正、反转工况、油液浸没深度和润滑油黏度等参数对齿轮箱内部流场分布的影响;计算齿轮副在不同工况下的搅油损失,并分析不同因素对齿轮副搅油损失的影响。结果表明:小齿轮逆时针旋转时油液到达啮合区更快,且啮合区油液粒子更多,有利于啮合区的润滑;小齿轮顺时针旋转时油液更易在箱体内部扩散;当浸油量增加时,飞溅润滑油量增加,高速度的油液粒子数明显增多,搅油损失也随之增大,其中润滑油的黏度对轴承孔进油量和搅油损失有较大影响。
In order to accurately and quickly obtain the real motion and distribution of the complex internal flow field in the gearbox of a high speed train during its operation,the three-dimensional model of the driving gearbox of high-speed EMU was reasonably simplified,and the Moving Particle Simulation(MPS)was used for simulation analysis.Based on different instantaneous distribution states of oil in the gearbox,the influences of key parameters such as forward and reverse rotation conditions,oil immersion depth and oil properties on the internal flow were studied.The oil churning loss of gear pair under different working conditions was calculated,and the influence of different factors on the oil churning loss of gear pair was analyzed.It is concluded that when the pinion rotates counterclockwise,the oil reaches the meshing area faster,and there are more oil particles in the meshing area,which is conducive to the lubrication of the meshing area.When the pinion rotates clockwise,the oil is more likely to diffuse inside the gearbox.The increase of the oil amount may produce more high-speed particles and cause more power loss,and the oil viscosity significantly influences the oil amount flowing into the bearing housing and the power loss during the oil stirring process.
作者
冯成程
董庆兵
魏静
朱万刚
FENG Chengcheng;DONG Qingbing;WEI Jing;ZHU Wangang(State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China;School of Mechanical Engineering,Chongqing University,Chongqing 400044,China;School of Mechanical Engineering,Dalian University of Technology,Dalian Liaoning 116024,China;Taiyuan Heavy Industry Rail Transit Equipment Co.,td.,Taiyuan Shanxi 030032,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2022年第1期101-110,共10页
Lubrication Engineering
基金
国家重点研发计划项目(2020YFB2010101)
国家自然科学基金项目(51905051)
中央高校基本科研业务费专项(2020CDCGJX058)
高速铁路基础研究联合基金项目(U1934202)。
关键词
齿轮箱
流场
粒子法仿真
搅油损失
gearbox
flow field
particle method simulation
churning power loss