Simulation calculation of temperature field of gearbox in straddle monorail train

Abstract

For a straddle-type monorail train gearbox, analyze the heating mechanism and heat transfer mode of each element in the gearbox, establish a heat transfer model of the gearbox, use empirical formula to calculate the heating power of each heating element, and use the flow field analysis to monitor it. Accurately calculate the convective heat transfer coefficient for the volume fraction of oil and gas in each cavity. Using the method of finite element simulation, the influence of different oil injection and large spiral bevel gear steering on the temperature field distribution of the gearbox is calculated and analyzed. The results show that when the large spiral bevel gear turns for a certain amount of time, the maximum temperature of each part of the gearbox at high oil level is higher than that at low oil level; When the amount of oil injection is constant, the temperature of each part in the reverse rotation of the large spiral bevel gear is higher than that in the forward rotation. This article provides the main reference for the prediction of the temperature field of the gearbox of the straddle monorail train and the improved design of the lubricating oil passage in the gearbox.

Modal Analysis of Aeronautic Spiral Bevel Gear in the Temperature Field

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Thermal stability of lubricants in cycloidal reducers

“…A lot of researchers studied thermal stability of worm gears [11][12][13]. Xue and Xu [14] investigated the heat transfer mechanism of each element in a cylindrical helical gearbox. Zivkovic [15] studied planetary gearbox and established a relation between mechanical losses and the amount of heat dissipated to the ambient air.…”