公开(公告)号：US20170355386A1

公开(公告)日：2017-12-14

申请号：US15616999

申请日：2017-06-08

Applicant: ALSTOM Transport Technologies

Inventor： Sacheen DAUSOA ,  Yves LONGUEVILLE

IPC: B61F5/20 ,  B61F5/38

Abstract: Disclosed is a rail vehicle including at least one car and at least one bogie carrying the car. The bogie includes a chassis and a secondary suspension system between the chassis and the car. The secondary suspension system includes a spring assembly mounted between the chassis and the car.The secondary suspension system includes a actuator, provided with a piston extending at least partially between an upper stop secured to the car and a lower stop secured to the chassis, and a supply device of the actuator.The supply device of the actuator is able to supply the actuator such that the distance between the upper and lower stops is kept constant by the actuator.

公开(公告)号：US20190084347A1

公开(公告)日：2019-03-21

申请号：US16135141

申请日：2018-09-19

Applicant: ALSTOM Transport Technologies ,  HUTCHINSON

Inventor： Jean-Yves GUERDER ,  Olivier TANNEAU ,  Benjamin FAYS ,  Pierre-Emmanuel GAUTHERET ,  Yves LONGUEVILLE

IPC: B60B17/00

Abstract: A noise-absorbing device for a railway vehicle wheel includes: at least one strip extending radially from a connecting end capable of being fastened to the periphery of the wheel, to a free end; and at least one damping mass fastened on a face of the free end of the strip, away from the connecting end. The strip includes at least two metal or composite layers and at least one layer of viscoelastic material gripped between the two or composite metal layers.