Railway vehicle guiding arm elastic connecting device

Abstract

The invention discloses an elastic coupling device for connecting the guide arms of a railway car bogie, which comprises a first connection seat in dead connection with one of guide arms. The first connection seat is provided with a first connection hole which is arranged longitudinally and horizontally along the railway car, and an elastic sleeve is arranged in the connection hole. The elastic coupling device further comprises a connection pin in dead connection with the other guide arm, wherein the expansion end of the connection pin is inserted into the elastic sleeve, and the elastic sleeve has an inner diameter slightly smaller than the diameter of the expansion end of the connection pin and an outer diameter slightly larger than the inner diameter of the first connection hole when the elastic sleeve is in a free state. The elastic coupling device of the invention can not only avoid direct friction between metal structures of the elastic coupling device to reduce abrasion but also ensure that the guide arms do not bear the braking force of the railway car. Additionally, the flexural rigidity between the two guide arms can be adjusted according to actual requirements to meet various actual requirements.

Description

technical field [0001] The invention relates to a connecting device, in particular to a connecting device for elastically connecting a guide arm of a bogie of a railway vehicle. Background technique [0002] As we all know, in order to increase the critical speed of the railway vehicle in meandering and improve the curve passing performance of the railway vehicle, connecting devices are usually arranged between the guide arms (or called sub-frames) of the railway vehicle bogie. [0003] Please refer to FIG. 1 . FIG. 1 is a schematic top view of a connecting device and its arrangement in the prior art. [0004] A first guide arm 121 and a second guide arm 122 are correspondingly provided between the left and right wheels of the first wheel pair 111 and the second wheel pair 112 of the railway vehicle bogie, respectively. As shown in Figure 1, the first guide arm 121 and the second guide arm 122 are both "C"-shaped frames, and their open ends are connected to the bearing sadd...

AI Technical Summary

Problems solved by technology

During the use of the vehicle, the hinged part of the connecting rod and the guide arm will rotate relative to each other, and this relative rotation will cause greater wear and tear on the hinged part, which will not only reduce the performance of the guide arm, but also cause Increased maintenance work and increased vehicle use costs;

[0007] Secondly, when the railway vehicle brakes, the distance between the guide arms tends to expand, and the above-mentioned connecting device of the prior art fixes the relative position between the guide arms along the longitudinal direction of the railway vehicle (that is, the direction shown by the arrow in Figure 1). , so the guide arm needs to bear a large braking force when the railway vehicle brakes, which will significantly reduce the service life of the guide arm and the connecting device;

[0008] Again, because in the connecting device of the above-mentioned prior art, the two connecting rods are respectively hinged with the two guide arms of the bogie to form a four-bar linkage structure, so it can only improve the shear stiffness between the two guide arms , but the bending stiffness between the two guide arms cannot be set according to actual needs

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