Rail gnawing caused by insufficient rigidity and wheel askew is overcome after the improvement, failures are reduced.

改进后消耗了刚性不足和车轮偏斜引起的啃轨现象，降低了故障。

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At first, the reason and hazard of rail gnawing in cranes big and small vehicle are analyzed, then the problems are listed when checking rail gnawing and resolutions are put forward.

分析了起重机大、小车运行产生啃轨的原因及其危害，同时列出啃轨时检验注意的问题，提出了解决啃轨的方法。

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The "gnawing rail" between wheel and rail of a bridge crane occurs sometime double-point contact circular top rail is of a structure form for eliminating "gnawing rail" fully.

起重机车轮与轨道间有时会发生“啃道”现象。双点接触圆顶轨道是彻底消除“啃道”现象的结构形式。

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