Vehicle coupler knuckle and vehicle coupler

Abstract

The invention discloses a vehicle coupler knuckle. The vehicle coupler knuckle comprises a coupler knuckle basal body, and the coupler knuckle basal body comprises a tail stopping part located at the tail of the coupler knuckle, a coupler knuckle inner wrist connected to the lower portion of the tail stopping part, a coupler knuckle pin hole located in the middle of the coupler knuckle and a coupler nose located at the pointed part of the coupler knuckle. A coupler knuckle inner cavity is formed between the tail stopping part and the coupler knuckle pin hole, a coupler knuckle S face is formed on the inner side of the coupler nose, the inner wall of the coupler knuckle inner wrist is a circular-ring curved surface a and is in transition connection with the inner wall e of the tail stopping part through a circular-ring curved surface b, the lower end of the inner wall of the coupler knuckle inner wrist is in transition connection with the inner side of the coupler knuckle S face through a circular-arc curved surface c, and the lower end of the inner side of the coupler knuckle S face is in transition connection with the coupler nose through a circular-arc curved surface d. The fatigue strength of the coupler knuckle can be obviously improved, the fatigue life of one side of the inner wrist face of the coupler knuckle S face is effectively prolonged, then the damage rate of the coupler knuckle is decreased, and the replacing frequency of a vehicle coupler is reduced.

Description

technical field [0001] The invention belongs to the technical field of transportation equipment, and relates to a coupler knuckle, and also relates to a vehicle coupler. Background technique [0002] As one of the most important connecting parts of rolling stock, the coupler is directly related to the safety and reliability of train operation, but it is also one of the parts most prone to fatigue damage in the vehicle structure. Especially for the coupler knuckles of heavy-duty trucks, a large number of knuckle cracks or even disconnection problems will appear in a short period of time, which seriously endangers driving safety. However, due to the limitation of the structural space of the coupler and the interchangeability of the coupler itself, there are few new technical means and methods for improving the fatigue strength of the coupler at home and abroad. Therefore, how to further improve the fatigue strength of the existing coupler has become an important key technical...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a coupler knuckle, which solves the problem in the prior art that the cross-sectional area of ​​the knuckle and the changing speed of the shape are unreasonable, so that the knuckle is prone to fatigue cracks

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