Connecting device between undercarriages for rail vehicles

Abstract

The invention discloses a connecting device between underframes of a railway vehicle. The connecting device comprises a permanent seat (1), a draft mandrel (2), springs (3) and a draft device, wherein the permanent seat (1) is arranged to be connected with the end face part of a draft sill of the underframes; the draft mandrel (2) is arranged to be conically connected with the permanent seat (1); the springs (3) are arranged between the draft mandrel (2) and the permanent seat (1) and are distributed along the peripheries of the draft mandrel (2) and the permanent seat (1); and the draft device is arranged to be connected with the side face part of the draft sill of the underframes. By conically connecting the permanent seat (1) with the draft mandrel (2), the precision of connection between the underframes of the railway vehicle is guaranteed; an impact force between the underframes of the vehicle is absorbed by the springs (3); and precision of the mutual position between the underframes of the vehicle is maintained by the draft device without directly using a hook part, so that safe and reliable properties of connection between the underframes of the vehicle are improved.

Description

1. Technical field [0001] The invention relates to a connection device, in particular a connection device between undercarriages of a rail vehicle. 2. Background technology [0002] As the main tool for passenger and freight transportation, rail vehicles travel in a row, and the underframes of the rail vehicles need to be connected to each other. Therefore, the connection device between the underframes of the rail vehicles is an important transportation component. In the existing connection devices between the underframes of rail vehicles, the drawbars are connected to each other through the hook parts. When the drawbeams of the underframe shake, the impact force on the hook parts is large. , thus reducing the safety and reliability performance. 3. Contents of the invention [0003] In order to overcome the above-mentioned technical disadvantages, the object of the present invention is to provide a connection device for the connection between the underframes of rail vehic...

AI Technical Summary

Problems solved by technology

[0002] As the main tool for passenger and freight transportation, rail vehicles travel in a row, and the underframes of rail vehicles need to be connected to each other. Therefore, the connection device between the underframes of rail vehicles is an important transportation component. In the existing connection devices used between the underframes of rail vehicles, the drawbars are connected to each other through the hook parts. When the drawbeams of the underframe shake, the impact force on the hook parts is large. , thereby reducing the safety and reliability performance of the

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