Drive device with a gear ring composed of segments, in particular identical segments to each other.

The drive device with segmented gear rings uses radially positioned connecting screws and hardened flange areas to maintain segment alignment and prevent gaps, ensuring smooth operation across temperature variations and high torque loads.

DE102025146199A1Pending Publication Date: 2026-06-18SEW EURODRIVE GMBH & CO KG
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Patent Information

Application Number
DE102025146199
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-03-04
Filing Date
2025-11-10
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Existing drive devices with segmented gear rings experience operational smoothness issues due to gaps forming in the toothed area at varying temperatures, particularly at high temperatures, which impair the gear's running performance.

Method used

The drive device incorporates connecting screws positioned radially outer and closer to the toothed area, with hardened flange areas, to prevent gaps by maintaining tension and alignment of gear segments, and centering screws for symmetrical tightening, ensuring a rotationally fixed connection.

Benefits of technology

This design enhances operational smoothness by preventing gaps in the toothed area, allowing the gear ring to function smoothly at both low and high temperatures, and supports high torque transmission.

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Abstract

Drive device with a gear ring composed of segments, where the respective segment - an inner ring section, - Striving, - an outer ring section with teeth and - a first flange area, - a second flange area, - Connecting screws and - Centering screws exhibits wherein the inner ring section is arranged radially within the outer ring section and wherein both the first flange section and the second flange section, as well as the struts, connect the inner ring section to the outer ring section, wherein both the connecting screws and the centering screws protrude through the first and second flange areas, the connecting screws are positioned closer to the teeth than the centering screws.
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Citation Information

Patent Citations

  • gear wheel with helical teeth and segment for a gear wheel

    DE102016010084A1

  • gear, especially gear ring

    DE102022002624A1

  • Cleaning device for a drum screen

    EP0140018A2