Patent ID: 9707981
Date: 2017-07-18
CPC Classifications: B61G

Claim:
1. 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 of the 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, wherein the coupler buffer further comprises a rotating sleeve, the rotating sleeve comprises a rotating ring portion configured to be sleeved on an outer periphery of the coupler and a mounting portion for a coupler tail pin which is connected to an end of the rotating ring portion, and an outer surface of the rotating ring portion is a spherical surface, wherein an outer surface of the mounting portion for the coupler tail pin is a cylindrical surface which is matched with an inner side surface of the coupler yoke.