Abstract
Taking the gearbox of straddle monorail train as the research object, reasonable simplification of the geometric structure of the gearbox. Based on incompressible gas-liquid two-phase flow in gearbox, the overlapping grid technology in STAR-CCM+ software is used to solve the internal flow field of the gearbox. The effects of gear forward rotation and initial oil injection on the mass flow rate of lubricating oil in each bearing inlet/return hole in the gearbox are studied and analyzed. The results show that: with the increase of the initial oil injection rate, the mass flow rate of the oil inlet hole of each bearing increases; The positive and reverse rotation has a great influence on the mass flow rate of lubricating oil in each bearing intake hole. In the case of the same amount of oil injection, the mass flow rate of each intake hole in forward rotation is larger than that in reverse condition. The results of this research provide a theoretical basis for the detailed structure design and improvement of lubricating oil runner in gearbox.
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