Arrangement of 2-axle bogie for trailed railway vehicle with radially adjustable wheels with longitudinal coupling

The 2-axle bogie with adjustable wheels and longitudinal coupling through drawbars and pivot members stabilizes vehicles at high speeds by transferring longitudinal displacement, addressing stability and axle bearing stress issues.

EP4763658A1Pending Publication Date: 2026-06-24TATRAVAGONKA AS
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Patent Information

Application Number
EP2025474002
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-23
Filing Date
2025-12-16
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing solutions for 2-axle bogies in trailed railway vehicles face issues with stability at higher speeds due to suspension impairing vehicle stability and causing additional stress on axle bearings, while maintaining radial wheel adjustment for curves.

Method used

A 2-axle bogie with radially adjustable wheels uses length-adjustable longitudinal drawbars and a central pivot member to transfer longitudinal displacement between axle boxes, limiting free oscillation and reducing stress on axle bearings.

Benefits of technology

Enhances stability at higher speeds by reducing axle vibration susceptibility and maintaining radial adjustment for curves, without increasing stress on axle bearings.

✦ Generated by Eureka AI based on patent content.

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Abstract

The arrangement of a 2-axle bogie for a trailed railway vehicle with radially adjustable wheels with longitudinal coupling has length-adjustable longitudinal drawbars (1) connected at one end to a central pivot member (2) located under the bracket (3) of the central pivot member (2), the length-adjustable longitudinal drawbars (1) are fixed at the other end to the mountings on the axle box lids (4) with rubber-metal ball pins (5), whereby the axles of the bogie are connected by means of longitudinal drawbars (1) independently on both sides of the bogie.
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Citation Information

Patent Citations

  • Two-axle bogie for railway vehicle with radially adjustable wheelsets with cross coupling

    EP2157007A1

  • Railway vehicle suspension arrangement

    GB2143785A

  • Electric truck for railway rolling stock

    JP1985076464A

  • wheel-axle set steering device for railway vehicle

    KR101288526B1

  • Stabilized railway vehicle

    US4480553A