Composite torsion damping device

Through the composite torsional vibration damping device, combined with the coordinated control of piezoelectric materials and electromagnetic damping, efficient vibration damping under different working conditions is achieved, which solves the shortcomings of traditional vibration damping technology in complex working conditions, improves the performance of the transmission system and reduces noise.

CN120384933APending Publication Date: 2025-07-29TAIYUAN UNIVERSITY OF TECHNOLOGY
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Patent Information

Application Number
CN202510316828.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-18
Publication Date
2025-07-29

AI Technical Summary

Technical Problem

Traditional torsional vibration damping technology cannot dynamically adapt to complex and variable working conditions, especially when the engine is running at low speed or high speed, resulting in fatigue damage to mechanical components, aggravated noise and reduced energy efficiency.

Method used

The composite torsional vibration damping device is adopted, combining the active adjustment of the stiffness of the piezoelectric material and the real-time controllability of electromagnetic damping, and the high-efficiency vibration damping under dynamic operating conditions is achieved through mechanical structure optimization, and the coordinated control of the piezoelectric reed sheet and the annular electromagnetic coil is used to achieve the adjustability of stiffness and damping.

Benefits of technology

Dynamically adjust the vibration damping performance in real time under different working conditions, significantly reduce the torsional vibration of the transmission system, improve the working performance of the transmission system and reduce noise, and is compact in structure, low in cost and high stability.

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Abstract

The invention belongs to the field of torsional vibration dampers, and particularly relates to a composite torsional vibration damping device. Comprising a first rotating part and a second rotating part; the first rotating part comprises a mass block and a vibration reduction body; the vibration reduction body is nested in the mass block, the vibration reduction body and the mass block are coaxial, and the circumferences of the vibration reduction body and the mass block are connected through uniformly distributed piezoelectric reeds; permanent magnets are arranged on the mass block by taking the axis of the vibration reduction body as a center array; the second rotating part comprises an annular electromagnetic coil, the annular electromagnetic coil and the vibration reduction body are coaxial, and the annular electromagnetic coil and the permanent magnet coincide in the space; a torque input connecting part is arranged on the axis of the damping body, and a torque output connecting part is arranged on the second rotating part; the active rigidity adjusting function of a piezoelectric material is combined with the real-time controllability of electromagnetic damping, and efficient vibration reduction under the dynamic working condition is achieved through mechanical structure optimization. Piezoelectric-electromagnetic cooperative control and structure integration optimization are achieved, the structure is simple, and the design is novel and reasonable.
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