Provided are a vehicle coupler, a coupler tongue and a coupler body. Upper traction platforms (101) and lower traction platforms (108) of the coupler tongue (01) and the hook body (03) are arranged in an offset manner in the horizontal direction, and the section R of a traction surface of the upper traction platform (101) and the section S of a traction surface of the lower traction platform (108) are obtained by sectioning the coupler tongue along any vertical surface across an axis of a pin hole (104); and the perpendicular distance between the point on the section R closest to a neck portion (102) and the axis of the pin hole (104) is k, and the perpendicular distance between the point on the section S closest to the neck portion (102) and the axis of the pin hole (104) is m, and as such, n=|k-m|, and 10 mm ≤ n ≤ 25 mm, thereby avoiding the situation where head portions of the upper traction platform and the lower traction platform of the coupler tongue and the coupler body are in the same vertical direction, in turn realizing that large stress zone weak parts of the upper traction platform and the lower traction platform of the coupler tongue are distributed in an offset manner, and greatly reducing the stress on the upper and lower traction platforms. Furthermore, the amount of displacement between the upper traction platform and the lower traction platform is in the range of 5 mm to 25 mm, and the displacement amount is more reasonable, such that the traction platform and a shocking platform are not too close in terms of distance, so as to avoid the situation where the structure between the traction platform and shocking platform abruptly changes, causing the force state of the position to deteriorate. In conclusion, the provided coupler tongue and coupler body can reduce stress, avoid premature fracturing of the upper and lower traction platforms, prolong the service life of the coupler tongue, reduce the maintenance cost and improve the transportation safety and reliability.
Vehicle coupler, coupler tongue and coupler body
2021-06-17
Patent
Electronic Resource
English
IPC: | B61G Kupplungen besonders ausgebildet für Eisenbahnfahrzeuge , COUPLINGS SPECIALLY ADAPTED FOR RAILWAY VEHICLES |