轨道交通齿轮箱热平衡分析技术研究

Study on Thermal Balance Analysis Technology of Rail Traffic Gearbox

轨道交通齿轮箱作为列车动力系统的关键部件,对列车的运行起到至关重要的作用。其中轨道交通齿轮箱的热平衡分析对保证齿轮箱的正常运行具有重要意义。以地铁齿轮传动系统为研究对象,应用热网络法建立关键部件的热平衡方程组,给出传动系统功率损失、热阻及对流换热系数的计算模型,并求解热平衡方程组的各节点温度。研究表明,该轨道交通齿轮箱的效率随着转速的升高而降低,转速升高,各节点的温度升高,齿轮啮合点处温度最高。

The rail traffic gearbox is a key part of the transmission system in the train.It plays a vital role in the operation of the train.Heat balance analysis of rail traffic gearbox has great influence on the operation of the gearbox.Based on subway gear transmission system,the heat balance equations of the transmission based on thermal network method is established,and the calculation models of heat source,thermal resistance and convective transfer coefficient are given,the temperature of each node is solved by the heat balance equations.The research shows that the efficiency of the rail transit gearbox decreases with the increase of the speed,and the temperature of each node increases with the increase of the speed,and the temperature of the gear meshing point is the highest.