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１ 问题的提出集宁机务段东风４Ｂ型机车担当集宁至呼和浩特区段的货物列车牵引运输任务，该区段线路坡道大，曲线半径小。多台机车在干线运用到７～８次定修时，乘务员提票反映齿轮箱出现齿轮油往抱轴瓦油盒内窜油，并伴有往外甩油现象。齿轮箱的窜油和甩油问题不仅危及行车
1 PROBLEM PROBLEMS The Jining locomotive DF4B locomotive serves as a freight train towing and transporting task for the section from Jining to Hohhot. The section of the railway has a large ramp with a small curve radius. Multiple locomotives used in the trunk 7 to 8 times fixed, the flight attendant ticket gear box gearbox oil gearbox to the axle oil, and accompanied by the phenomenon of oil thrown out. Gearbox oil transfer and oil rejection problems not only endanger traffic