Transient Temperature Field of Planetary Gear System in Electro-mechanical Transmission under Different Working Conditions

doi:10.3969/j.issn.1000-1093.2021.10.023

Abstract

Abstract: The transient meshing temperature of planetary gear system rises sharply when the electro-mechanical composite transmission device works in a harsh environment such as high speed, heavy load and high oil temperature. The transient temperature fields of planetary gear system model under different speeds, different loads, variable speed and constant power are calculated by finite element method. The transient temperature curves and tooth surface heating of sun gear and planetary gear under different conditions are analyzed, and the three-dimensional curves of transient temperature field on tooth top surface and tooth root surface under different working conditions are drawn. The relative growth relationship and growth amount of transient temperature on tooth surface are discussed in detail, and the influence laws of different rotating speed, different torques and output power on the transient temperature field of sun gear and planetary gear are obtained. Under different rotating speeds, the root surface temperature and maximum top surface temperature of sun gear and planetary gear teeth gradually increase with the increase in rotating speed, and when the rotating speed of sun gear is greater than 5 000 r/min, the increase rate of maximum temperature gradually decreases. Under the condition of constant power, the absolute value of the reduced maximum temperature of the top surface and root surface of sun gear and planetary gear teeth is basically equal to twice of the previous rotating speed point with the increase in rotating speed. The correctness of the method used in this paper is verified by experiments.

Key words: electro-mechanicaltransmission, planetarygearsystem, toothsurface, transienttemperaturefield, experimentalverification

CLC Number:

TJ810.3⁺23

PANG Daqian， ZENG Gen， LI Xunming， GUO Lei， ZHAO Fuqiang， SUN Zhanchun. Transient Temperature Field of Planetary Gear System in Electro-mechanical Transmission under Different Working Conditions[J]. Acta Armamentarii, 2021, 42(10): 2268-2277.

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