Coupler buffering mechanism

Abstract

The invention discloses a coupler buffer device including a coupler, a coupler tail frame, a coupler tail pin and slave plates. A coupler head of the coupler comprises a coupler knuckle, a coupler knuckle pin, a coupler knuckle thrower, a coupler lock, a lower lockpin assembly, and a lower lockpin rotating shaft, wherein when the lower lockpin rotating shaft rotates, the lower lockpin assembly actuates to ensure that the coupler lock moves up and down along an inner cavity of the couplerhead of the coupler to drive the rotation of the coupler knuckle thrower to push the coupler knuckle to rotate around the coupler knuckle pin; the middle part of the end surface of a coupler tail of the coupler has a cylindrical surface, and convex shoulders are symmetrically arranged at both sides. A head part width size of the coupler tail frame is near the distance between opposite surfaces of blocks in a base of two front slave plates, so that the distance enables the gap between the coupler tail frame and the blocks in the base of the front slave plates to decrease. Under the drag and compression states, the blocks in the base of the front slave plates can limit the landscape swing of the coupler tail frame so as to lead the coupler buffer device to have guiding and position correction functions.

Description

technical field [0001] The invention relates to a railway vehicle traction device, in particular to a coupler buffer device. Background technique [0002] The coupler buffer device (referred to as the coupler buffer device) is an important part of the railway vehicle. It is located at both ends of the locomotive or vehicle, and is used to realize the mutual connection of the locomotive or vehicle, transmit traction or compression force, and ease the longitudinal impact. The coupler buffer device is mainly composed of coupler, buffer, coupler frame, slave plate, coupler pin and other parts, and is a key component to ensure the safety of railway transportation. [0003] See Figure 1-2 ,in: figure 1 It is a structural schematic diagram of an existing hook buffer device; figure 2 yes figure 1 top view. The coupler buffer device is used in heavy-duty trains SS4G and HXD1 8-axle electric locomotives on the Daqin Line. 2 is connected with the coupler frame 5; when the loco...

AI Technical Summary

Problems solved by technology

Assume that the force on the hook head is F1, and the force on the coupler tail is F2; ​​when the end surface 132 of the hook tail and the bearing surface 321 of the slave plate are both cylindrical surfaces, the direction of the force F1 on the hook head and the force F2 on the coupler tail are opposite, so that the locomotive Or the longitudinal force of the vehicle is transmitted through the longitudinal centerline AA' of the coupler; when the coupler 1 is deflected by an angle α relative to the centerline CC' of the car body, the angle between the line of action of the longitudinal force BB' and the centerline CC' of the car body β=α , which makes the longitudinal force produce a certain transverse force, which will directly affect the dynamic stability of the locomotive or vehicle in severe cases, and even cause derailment accidents

[0007] In addition, the above-mentioned couplers also have the following defects: on the one hand, there is no anti-detachment function, that is, the function of preventing the couplers from being separated from each other due to the excessive height difference of the couplers, which may cause train separation accidents; The anti-jump performance is weak, that is, the performance of preventing the coupler from automatically unlocking due to the vibration of the coupler lock and the upper (lower) lock pin is poor.

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