Heavy-load coupler with safety stop and low transverse force properties

Abstract

The invention discloses a heavy-load coupler with safety stop and low transverse force properties. The heavy-load coupler comprises a coupler, a coupler buffer device and a coupler tail key connection mechanism. The coupler buffer device fixedly mounted on a vehicle mounting seat (1) comprises a two-stage buffer structure. The coupler (13) is connected with a coupler tail frame (6) by a coupler tail key (11) via a key hole formed in a coupler tail frame edge (61), and can rotate around the coupler tail key (11); a slider (9) and a front follower (10) are sequentially arranged between a top partition plate (8) and the coupler (13), and the slider (9) is placed in the coupler tail frame (6) and can axially slide along the coupler tail frame (6); the front follower (10) can transversely move relative to the coupler tail frame edge (61). Contact surfaces of the front follower and the tail end of the coupler are arc surfaces. The heavy-load coupler has the advantages that the coupler generates low transverse force at a small corner, and the safety of a locomotive is guaranteed when the coupler turns around a large corner.

Description

technical field [0001] The invention belongs to the technical field of rolling stock, especially heavy-duty train couplers. Background technique [0002] When a heavy-duty train brakes, a large longitudinal compression force acts on the coupler of the locomotive. When the compression force exceeds the bearing limit of the coupler, the coupler will lose stability and cause a large corner. The large lateral force of the coupler makes the locomotive produce a large wheel-rail force, causing the locomotive to derail. As one of the key equipment for heavy-duty railway transportation, the requirements for heavy-duty couplers should also increase accordingly with the increase of train transportation tonnage and operating speed. [0003] The current heavy-duty locomotive couplers can be roughly divided into two categories according to the principle of hook stability: the first category is connected by flat pins, relying on the arc contact of the coupler tail. The corner of the for...

AI Technical Summary

Problems solved by technology

The first type of coupler is in a small angle, the lateral force of the coupler is negligibly small, and the resistance moment of the coupler is small in a small angle, so the train has good dynamic performance, but when the coupler angle is large, because there is no stop The block prevents the increase of the coupler angle, which will cause the coupler to become unstable and cause serious driving safety accidents

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