鱼雷减速器齿轮润滑油需求流量分析

Analysis of lubricating oil demand flow of a torpedo reducer gear

鱼雷减速器具有短时苛刻工况的工作特点,为精确计算齿轮运行时润滑油需求流量,提出一种基于热弹流润滑模型和齿面胶合理论的齿轮润滑油量计算方法,建立斜齿轮热弹流润滑模型,得到齿轮滚滑速度、齿轮齿面油膜厚度等参数,计算齿轮生热功率,基于热弹流润滑计算的齿轮固体表面温度,结合齿轮胶合临界温度,确定给定参数内润滑油最大允许温升,进一步计算出齿轮副润滑油流量。计算得到的减速器齿轮所需供油量,相比较传统机械手册计算结果,能够节约润滑油63.8%。通过试验验证,此方法更适用于短时严苛工况下减速器齿轮的润滑油需求流量计算。

Torpedo reducer has the characteristics of short-time and harsh working conditions.In order to accurately calculate the lubricating oil demand flow of gear during operation,a gear lubricating oil quantity calculation method based on the thermal-elastohydrodynamic(TEHD)lubrication model and the tooth surface gluing theory was put forward.The helical gear TEHD lubrication model was established to obtain the parameters such as the gear rolling speed and the oil film thickness of the gear tooth surface,and the thermal generating power of the gear was calculated.Based on the gear solid surface temperature calculated by TEHD lubrication model,combined with the critical temperature of gear bonding,the maximum allowable temperature rise of lubricating oil within the given parameters was determined,and the lubricating oil flow of gear pair was further calculated.Compared with the calculation result of traditional mechanical manual,the calculated oil supply of reducer gear can save 63.8%of oil flow.The experimental results show that this method is more suitable for the calculation of lubricating oil demand flow of reducer gear under short and severe working conditions.