Shaft-hub connection having an axial securing means

The shaft-hub connection with a multi-part ring element addresses axial force management and tilting issues in machine units by providing positive locking and radial guidance, ensuring reliable force support and simplified assembly.

WO2025242647A1PCT designated stage Publication Date: 2025-11-27FLENDER GMBH
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Patent Information

Application Number
PCT/EP2025/063788
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-21
Filing Date
2025-05-20
Publication Date
2025-11-27

AI Technical Summary

Technical Problem

Existing shaft-hub connections in machine units, particularly in planetary gearboxes, face challenges in effectively managing axial forces and preventing tilting due to high clamping forces and dynamic loads, especially in large-scale applications like wind turbines, where standardized retaining rings are costly and difficult to install, and two-piece bolted solutions are prone to wear.

Method used

A shaft-hub connection with a multi-part ring element that provides positive locking between the shaft and hub elements, using interlocking sections and radial guidance to support axial forces in both nominal and reversing operations, reducing tilting and assembly complexity while minimizing installation space.

Benefits of technology

The solution effectively supports axial forces in both operating directions, reduces the risk of tilting and wear, and simplifies assembly by eliminating screw elements from the force transmission path, enhancing safety and efficiency.

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Abstract

The invention relates to a shaft-hub connection (10) for a machine unit, in particular a planetary transmission, having a shaft element (12), a hub element (14) which is connected in a rotationally fixed manner to the shaft element (12) about a main axis of rotation (AR)<sb / > and surrounds the shaft element (12), wherein, for the transmission of axial force, a ring element (20) is provided which connects the shaft element (12) and the hub element (14), and the ring element (20) is of at least two-part design in the radial direction (22) and forms a first axial section (221), seated between the shaft element (12) and the hub element (14), and a second axial section (222)<sb / >, wherein the second axial section (222) engages behind a radial collar (18) of the hub element (14) and the shaft element (12) of the first axial section (221) from a first axial direction. The ring element (20) and the form-locking connection between the shaft element (12) and the hub element (14) reduce significant tilting from shaft element to hub element in the spline (16) as a result of the achieved axial and radial guidance.
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Citation Information

Patent Citations

  • Connection arrangement for torque transmission for use in the drive train of a motor vehicle

    DE102014118398A1

  • Shaft connection

    DE102017117620A1

  • Planetary transmission

    US20200347914A1