Car-coupler buffer and rail way car

A railway vehicle, comprising a coupler buffer comprising:

• a coupler yoke for connection to a coupler, a front stop body for mounting to a vehicle body, a first elastic element, wherein a rear end of the first elastic element abuts against the coupler yoke and a front end first elastic element abuts against the front stop body, and in a case that the vehicle body suffers a traction force, the first elastic element is compressed under force, a casing arranged at a rear end of the coupler yoke, wherein a rear end of the casing is configured to be connected to the vehicle body, and the casing is connected to the coupler yoke via a connecting shaft, and the coupler yoke is movable along an axial direction of the connecting shaft, and a second elastic element arranged between the casing and the coupler yoke, wherein in a case that the vehicle body suffers a compression force, the second elastic element is compressed under force.