文章结合HXD2型大功率机车驱动装置结构特点和可靠性要求,通过对其牵引齿轮的齿廓修形、材料、热处理等关键技术的研究,提出了此类齿轮降低轮齿工作应力、提高承载能力及使用寿命的途径。采用此类技术制造的齿轮,经过大秦线等货运专用线路重载牵引机车的实际运用考核,实现了其实际运行工况下预期的可靠性目标。 Combining with the structural characteristics and reliability requirements of HXD2 high-power locomotive driving device, this paper puts forward that such gears can reduce the work stress and improve the bearing capacity of gear teeth through the research on the key technologies of tooth profile modification, material and heat treatment of traction gear, And service life of the way. The gears manufactured with this kind of technology have passed the actual application assessment of heavy duty traction locomotives on freight lines such as Daqin Line and achieved the expected reliability targets under actual operating conditions.