The invention relates to a tyre tread 1 for heavy civil engineering vehicles and is intended to provide a compromise between mechanical attack resistance and thermal ventilation against stony soil. The tread has a middle portion 11 comprising a longitudinal row of at least one block 3, each block 3 being delimited laterally by two longitudinal grooves 41 having a radially outer portion 411 and a radially inner portion 412, and each block 3 being delimited longitudinally by two lateral inter-block cutouts 42, the lateral inter-block cutouts 42 being delimited laterally by two longitudinal grooves 41 having a radial outer portion 411 and a radial inner portion 412, and the lateral inter-block cutouts 42 being delimited laterally by two lateral inter-block cutouts 42. The transverse inter-block cutout 42 has a radially outer portion 421 and a radially inner portion 422. According to the invention, the maximum thickness (E11max, E21max) of each radially outer portion (411, 421) is at most equal to 20% of the depth (P1, P2) of the cut-out (41, 42) and strictly less than the maximum thickness (E12max, E22max) of the radially inner portion (412, 422), and the minimum thickness (E11min, E21min) of each radially outer portion (411, 421) is at least equal to 5% of the depth (P1, P2) of the cut-out (41, 42).

    本发明涉及一种用于重型土木工程车辆的轮胎胎面1,并旨在提供对石质土壤的耐机械攻击性和热通风之间的折衷。胎面具有中间部分11,所述中间部分11包括至少一个块状部3的纵向排,每个块状部3由两个纵向沟槽41沿横向界定,并由两个横向块状部间切口42沿纵向界定,所述纵向沟槽41具有径向外部分411和径向内部分412,所述横向块状部间切口42具有径向外部分421和径向内部分422。根据本发明,每个径向外部分(411、421)的最大厚度(E11max、E21max)至多等于切口(41、42)的深度(P1、P2)的20%,并严格小于径向内部分(412、422)的最大厚度(E12max、E22max),并且每个径向外部分(411、421)的最小厚度(E11min、E21min)至少等于切口(41、42)的深度(P1、P2)的5%。


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    Titel :

    Tire tread for heavy civil engineering vehicles with improved compromise between strength/thermal wear


    Weitere Titelangaben:

    在强度/热磨损之间具有改善的折衷的用于重型土木工程车辆的轮胎胎面


    Beteiligte:

    Erscheinungsdatum :

    2024-03-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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