Car coupler shrinkage device and car coupler

Abstract

The invention provides a car coupler shrinkage device and a car coupler. The car coupler shrinkage device comprises a shell and a traction rod capable of shrinking along the shell, wherein the shell is disposed outside the traction rod in a sleeving manner; a limiting block is fixedly disposed on an outer side surface of the traction rod; a locking ring capable of contacting with the limiting block is disposed inside the shell in the sleeved manner; the locking ring and the shell are coaxial; the locking ring and the shell are rotatably connected; an inner surface of the locking ring is provided with a through slot along an axial direction; the shape of the through slot corresponds to that of the limiting block, so that the limiting block passes through the through slot when the through slot and the limiting block are aligned; after stretching of the traction rod is completed, blocking of the limiting block is implemented through rotation of the locking ring so as to complete stretching locking for the traction rod. The car coupler comprises the abovementioned car coupler shrinkage device. According to the car coupler shrinkage device and the car coupler, the occupation space can be reduced and the structure is simple.

Description

technical field [0001] The invention belongs to the technical field of rail vehicle coupling, and in particular relates to a coupler telescopic device and a coupler. Background technique [0002] As a key component of the train coupler, the telescopic device can ensure that the coupler smoothly completes the two actions of extending and retracting during the operation of the train. In order to ensure that the coupler can maintain the current state after extending or retracting, it is required that the telescopic device needs to have a reasonable locking mechanism. The existing automatic coupler telescopic devices for couplers mainly have the following locking methods: (1) latch type, which has a simple structure, but the force-bearing cross-sectional area is small; (2) block type, whose structure is also relatively simple, but the contact surface It is two arc surfaces with different radii, so the contact surface is easy to wear and deform after a long time; (3) spline type...

AI Technical Summary

Problems solved by technology

[0004] However, due to the existence of the compression rod, the above-mentioned telescopic mechanism can only be arranged outside the casing, so it has the defects of large space occupation and complex structure.

Images