idle gear

According to the non-backlash meshing basic relation ship and the requirement of equality of addendum reducing coefficients, the paper applies computational methods of computer programming and cut-and-try to determine the modification coefficient of idle gear in ordinary gear train.

本文依据无侧隙啮合基本关系和齿顶降低系数相等的要求，应用计算机编程计算和计算器试凑计算方法，确定定轴轮系惰轮的变位系数。

Determination of Modification Coefficient of Idle Gear in Ordinary Gear Train

定轴轮系惰轮变位系数的确定

The reasons of reduction in engagement clearance between timing gear and big dual idle gear of DF_7 locomotive diesel engine and the probable resulting damages were analysed, and the measures to prevent this fault from occurring were proposed.

针对DF7型机车柴油机正时齿轮与双联大介轮啮合间隙减小这一故障，分析了其产生的原因以及可能造成的危害，并制定了防止该故障发生的措施。