| 摘要 |
PURPOSE: A heavy duty tire minimizes thermal energy accumulated and prevents early abrasion of a shoulder member so as to prevent belt accident. CONSTITUTION: A third belt(3) is divided into three parts to a driving direction. Rigidity to a driving direction of a central belt(31) is reinforced more than an existing product and at the same time the exterior extension thereof is maintained. Both shoulder parts(32) is made of a steel cord with a high elongation and a large degree so as to make easier the transformation thereof according to a tensile force than that of the central belt(31) and increase the efficiency of ground contact thereof, which minimizes thermal energy accumulated and assures regular pressure of ground contact, thereby preventing early abrasion thereof.
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