Patent ID: 11912316
Assignee: CRRC QIQIHAR ROLLING STOCK CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A coupler knuckle comprising
an upper traction platform,
a lower traction platform,
an upper impact platform,
a lower impact platform,
a pin hole and
a neck portion,
wherein a section R of a traction surface of the upper traction platform and a section S of a traction surface of the lower traction platform are obtained by sectioning the coupler knuckle along any vertical plane passing through an axis of the pin hole; and
a perpendicular distance between a point on the section R closest to the neck portion and the axis of the pin hole is defined as k, and a perpendicular distance between a point on the section S closest to the neck portion and the axis of the pin hole is defined as m, and n=|k−m| and 10 mm≤n≤25 mm.