Ultrahigh-strength steel cord for 2+4 tire

The utility model discloses a 2 + 4 tire extra-high strength steel cord which comprises a core strand and an outer layer strand, and the core strand is composed of two core steel wires and is not twisted; the outer-layer strand is formed by weaving and twisting four sheath steel wires around the core strand; the core steel wire and the sheath steel wire have the same diameter; when the extra-high-strength steel cord for the 2 + 4 tire is used in a radial tire body or a belted layer, the anti-fatigue performance of the tire can be enhanced; compared with a conventional 2 + 4 * 0.22 HT structural steel cord, under the condition of equal cord fabric strength, the usage amount of the 2 + 4 tire extra-high-strength steel cord and the usage amount of the rubber material are both reduced by 3.2%, and light weight of the tire can be achieved. 本实用新型公开了一种2+4轮胎特高强度钢帘线，包括芯股和外层股，芯股由两根芯钢丝组成，无编捻；外层股由四根鞘钢丝围绕芯股编捻而成；芯钢丝和鞘钢丝的直径相同；将该2+4轮胎特高强度钢帘线用于子午线轮胎胎体或带束层中，能够增强轮胎的抗疲劳性能；与常规的2+4×0.22 HT结构钢帘线相比，在相等帘布强度的条件下，该2+4轮胎特高强度钢帘线及胶料的使用量均减