The motor position is adjustable to accommodate different gears and to allow adjustment of the gear mesh between the pinion and its mating spur gear.

电机的位置是可调节的，以适应不同的齿轮，并允许该小齿轮及其配对正齿轮之间的调整的齿轮的啮合。

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This paper analyses on the main reasons of the "track biting" of cranes running gears, and puts forward some measures for adjustment and repair.

分析了起重机运行机构“啃轨”的主要原因，提出了调整与修复的措施。

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