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1 问题的提出 柴油机喷油泵齿圈是喷油泵总成里的主要零件之一。我厂在大修DF4型机车时,每台柴油机的16个喷油泵齿圈几乎全部更换,从而造成一项资源的浪费。喷油泵齿圈报废的原因主要是齿圈与齿杆啮合面磨损严重,导致齿圈与齿杆的啮合间隙超差;其次是齿圈内的键槽与柱?
1 The question put forward Diesel fuel injection pump gear ring is one of the main components in the fuel injection pump assembly. When the factory overhauled the DF4 locomotive, almost all of the 16 fuel injection pump gear rings of each diesel engine were replaced, resulting in a waste of resources. Fuel pump gear ring scrapped the main reason is the ring gear and gear meshing surface wear serious, resulting in gear ring and rack meshing gap over tolerance; followed by ring gear in the keyway and column?