| 摘要 |
PURPOSE:To exhibit a great tractive force against all kinds of snow nature by forming both a block shaped projection crossing a transversal reinforcing rod back and forth and a large protruded strip which is a little low but sharply higher than a small protruded stripe, continuously to the transversal direction on the belt surface of a truck belt for a snow vehicle and the like. CONSTITUTION:Both a block shaped projection 21 crossing a transversal reinforcing rod 16 back and forth and a large protruded stripe 17 which is little lower than the block shaped projection 21 but sharply higher than a small protruded stripe 18, are formed continuously to the transversal direction on the belt surface corresponding to the transversal reinforcing rod 16. Accordingly, against snow trodden hard, the block shaped projection 21 bites into the snow surface Sa for exhibiting a great tractive force because of spike effect. And against snow trodden halfly hard, even the large protruded stripe 17 bites into the extent of the snow surface Sb, and against the soft surface of fresh snow and the like, even a small protruded stripe 18 bites into the extent of the snow surface Sc for exhibiting a great tractive force thereby making it possible to exhibit a great tractive force against all kinds of snow nature.
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