The invention relates to a tyre (1) for a trailer of a heavy vehicle and is intended to improve its grip performance on the snowfield without compromising its mechanical strength in terms of scratch stress. According to the invention, the tread (2) having at least one complex circumferential cut (7) in the middle portion (4) comprises a first type of transverse cuts (referred to as transverse through sipes (81)) and/or a second type of transverse cuts (referred to as blind transverse cuts (82)), said transverse through sipes (81) having a thickness (E1) at most equal to 0.8 mm, a depth (P1) at least equal to 20% of the maximum cut depth (H), the blind transverse cut-out (82) stops near the outer cavity (71), has a thickness (E2) at least equal to 1 mm, a depth (P2) at most equal to 20% of the maximum cut-out depth (H), and a distance (D2) from the outer cavity (71) at least equal to 3 mm, and the blind transverse cut-out (82) stops near the outer cavity (71), has a thickness (E2) at least equal to 1 mm, a depth (P2) at most equal to 20% of the maximum cut-out depth (H), and a distance (D2) from the outer cavity (71).

    本发明涉及一种用于重型车辆的拖车的轮胎(1),并旨在提高其在雪地上的抓地性能,而不会损害其划擦应力方面的机械强度。根据本发明,在中间部分(4)中具有至少一个复杂周向切口(7)的胎面(2)包括第一类横向切口(称为横向贯穿刀槽(81))和/或第二类横向切口(称为盲横向切口(82)),所述横向贯穿刀槽(81)具有至多等于0.8mm的厚度(E1),至少等于最大切口深度(H)的20%的深度(P1),并且相对于最靠近的外部空腔(71)的距离(D1)至少等于7mm,所述盲横向切口(82)在外部空腔(71)附近停止,具有至少等于1mm的厚度(E2),至多等于最大切口深度(H)的20%的深度(P2),并且相对于外部空腔(71)的距离(D2)至少等于3mm。


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    Title :

    Tyre with improved grip for heavy vehicles


    Additional title:

    用于重型车辆的具有改善抓地的轮胎


    Contributors:

    Publication date :

    2025-01-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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