A helical gear having a high natural frequency

By setting symmetrical through holes and reinforcing beams in the helical gear spoke section, the problem of insufficient lightweight gear design is solved, the natural frequency is increased, resonance and noise are reduced, and the stability of the gear is ensured.

CN116717576BActive Publication Date: 2026-06-26XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAMEN UNIV
Filing Date
2023-06-13
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing gears lack lightweight design for complex operating conditions, resulting in insufficient improvement in natural frequency, strong resonance and noise, and affecting gear operation stability.

Method used

Design a helical gear, including a shaft connection part, a spoke part and a helical tooth part. The spoke part is provided with symmetrically shaped through holes evenly distributed in the circumference, and a reinforcing beam is provided below the spoke part. It is connected to the inner ring body and the support body through a connecting column to enhance the structural rigidity.

Benefits of technology

This resulted in lighter gears, a structure that meets stress and deformation requirements, effectively increased natural frequency, reduced resonance and noise, and achieved the goal of lightweighting.

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    Figure CN116717576B_ABST
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Abstract

The application discloses a helical gear with high inherent frequency, which comprises a web part, wherein the web part comprises an inner ring body, a supporting body and a web body, the inner edge of the web body is connected with the inner ring body, the outer edge of the web body is connected with the supporting body, and a plurality of through holes are uniformly distributed in the circumferential direction of the web body; the helical gear further comprises a plurality of reinforcing beams which are uniformly distributed in the circumferential direction below the web part, the inner end of each reinforcing beam is connected with the inner ring body, the outer end of each reinforcing beam is connected with the supporting body, and the inner end of each reinforcing beam is connected with the lower surface of the web body through at least one connecting column. By using the above technical scheme, the inherent frequency can be effectively improved to reduce the resonance phenomenon under the premise of meeting the stress requirement of the gear.
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