Flywheel diaphragm weight reduction method and device, medium, processor and flywheel diaphragm

By accurately identifying the strength-sensitive areas of the flywheel diaphragm and setting fan-shaped weight-reduction holes, the problem of unsatisfactory weight reduction effect of traditional flywheel diaphragm structures is solved, achieving precise weight reduction of materials and ensuring fatigue strength.

CN122065481AActive Publication Date: 2026-05-19WEICHAI POWER CO LTD
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Patent Information

Application Number
CN202610536324.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-05-19
Estimated Expiration
2046-04-22

AI Technical Summary

Technical Problem

Traditional flexible flywheel diaphragm structures are not ideal in terms of weight reduction, lacking scientific design methods, resulting in material redundancy and local stress concentration.

Method used

By accurately acquiring the dynamic bending moment distribution curve of the crankshaft system during its working cycle, the stress distribution and fatigue safety factor are calculated, strength-sensitive areas are identified, and fan-shaped weight-reducing holes are set in these areas to ensure that the material remains intact in high-stress areas and reduces weight in low-stress areas. The shape and size of the holes are optimized in conjunction with bolt assembly constraints.

Benefits of technology

It achieves precise weight reduction by distributing materials as needed, avoids material redundancy and local stress concentration, ensures fatigue strength, and improves the weight reduction effect.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention provides a flywheel diaphragm weight reduction method and device, a medium, a processor and a flywheel diaphragm. The method comprises the steps that a bending moment distribution curve of a crankshaft system in an engine work period is obtained; calculating stress distribution and a fatigue safety coefficient of the flywheel diaphragm under the action of the bending moment of the bending moment distribution curve so as to determine a strength sensitive area of the flywheel diaphragm; the geometric boundary of a fan-shaped lightening hole of the flywheel diaphragm is determined, the two side edges of the fan-shaped lightening hole are aligned with the boundary of the strength sensitive area, and two concentric arcs are determined according to bolt assembly constraint; and checking the strength and torsional vibration characteristics of the flywheel diaphragm adopting the fan-shaped lightening hole structure under the dynamic load, and iteratively optimizing the side angle and the arc radius of the fan-shaped lightening hole until the flywheel diaphragm meets the strength allowance requirement and the torsional vibration response is within the allowable range. The problem that in the prior art, the weight reduction effect of a traditional elastic flywheel diaphragm structure is poor is solved.
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