| 摘要 |
A core metal for a rubber caterpillar, which can prevent fall-off of the caterpillar resulting from a flange portion of an idler wheel running on a rail surface of a core metal. The core metals (10, 20), which are buried equidistantly in the rubber caterpillar (5), are equipped with guide slopes for facilitating entry of the flange portion (4a) of the idler wheel at the time of move-back of a vehicle, on the inner side surfaces of a pair of protuberances (13, 14, 23, 24) disposed at the central portion of the rubber caterpillar (5) in its transverse direction. The slope angle (&thetas;) of the guide slope is from 5 to 15 DEG , and the length (LR) of the slope is preferably as great as possible. <IMAGE>
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