公开(公告)号：US20040108023A1

公开(公告)日：2004-06-10

申请号：US10724695

申请日：2003-12-02

Applicant: ALSTOM HOLDINGS and VALDUNES

Inventor： Alain Landrot ,  Francois Demilly

IPC: C21D009/32

CPC classification number: B60B11/00 ,  B60B17/0006 ,  B60B17/0068 ,  Y10T29/49483

Abstract: This invention relates to a safety wheel, for a subway coach bogie, or the like, running on pneumatic tires, adapted to be interposed between a chassis of the bogie and a corresponding tire, said wheel presenting an outer peripheral zone having a braking portion as well as a guiding portion projecting radially outwardly from the braking portion, the hardness of the braking portion being much greater than the hardness of the guiding portion. This may be achieved for example by effecting a selective tempering of the braking portion by peripheral nozzles projecting a cooling liquid. This safety wheel is considerably longer lasting than those of the prior art.

Abstract translation: 本发明涉及适用于在转向架的底盘与相应的轮胎之间插入的充气轮胎上运行的地铁教练转向架等的安全轮，所述车轮具有带有制动部分的外周区域 以及作为从制动部分径向向外突出的引导部分，制动部分的硬度远大于引导部分的硬度。 这可以通过例如通过突出冷却液的外围喷嘴进行制动部分的选择性回火来实现。 该安全轮比现有技术的持续时间长得多。