Eddy-current damping device utilizing lever principle

A vibration damping device, lever principle technology, applied in the direction of spring/shock absorber, vibration suppression adjustment, non-rotation vibration suppression, etc., can solve problems such as large structural vibration, achieve large adjustability, prolong service life, and avoid assembly difficult effect

Active Publication Date: 2017-11-17
SOUTHEAST UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] Technical problem: Aiming at the problem of excessive vibration of existing civil engineering structures, the present invention provides an eddy current damping device using the principle of leverage

Method used

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  • Eddy-current damping device utilizing lever principle
  • Eddy-current damping device utilizing lever principle
  • Eddy-current damping device utilizing lever principle

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Embodiment Construction

[0031] For the convenience of those skilled in the art to understand accurately, the present invention will be further described in detail below in conjunction with the accompanying drawings, and the content mentioned in the embodiments does not limit the present invention.

[0032] The eddy current damper is an energy dissipation vibration reduction device made of the damping effect of the eddy current. It has the advantages of simple structure and good durability. At present, it is mainly used as the damping element of the tuned mass damper in the vibration of civil engineering structures. control field. In addition, the lever device is simple and easy to operate. By adjusting the length of the force arm at both ends of the lever, the TMD parameters can be adjusted by borrowing the mass of the permanent magnet; and the two sides of the lever have obvious relative motion, which can increase the relative motion between the permanent magnet and the copper plate. speed, effectiv...

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Abstract

The invention provides an eddy-current damping device utilizing the lever principle. The eddy-current damping device comprises a box body (1), a connecting screw hole (2), a fixed copper plate (3), a permanent magnet (4), a permanent magnet guide rail (5), a supporting rod (6), a movable copper plate (7), a mass block (8), a mass block guide rail (9), a spring (10), a connecting rod (11), a hinged screw hole (12) and a drive pin roll (13); when the structure vibrates, a TMD damper is firstly used to perform energy transfer, so that vibrations of the structure are reduced; then, the mass block drives the permanent magnet to generate motion reverse to that of the mass block through a lever system, so that relative motion velocity of the copper plate and the permanent magnet is increased, and non-contact type energy dissipation is performed through an eddy-current damp. The lever principle is utilized to effectively increase the relative motion velocity of the copper plate and the permanent magnet, so that energy-dissipating capacity of the damp is improved; the position of a central fulcrum of the connecting rod and length of a force arm of the lever are regulated, so that parameters of the TMD damp can be regulated, and therefore, applicable frequency range of the device is wider.

Description

technical field [0001] The invention relates to an eddy current damping device utilizing the principle of leverage, which is suitable for damping control of various civil engineering structures such as bridges, buildings, transmission towers, offshore wind turbines and the like. Background technique [0002] With the continuous improvement of my country's infrastructure construction, the scale of super-long and super-long-span bridges, super-high-rise building structures, high-speed railways and underground railways has continued to expand. And with the development of civil engineering technology and building materials, civil engineering structures tend to be characterized by light structures, large spans, super high-rise buildings, and complex forms. Such structures are prone to large deformation and vibration under dynamic load. The vibration of the structure will not only cause discomfort to the upper personnel, but excessive deformation and vibration will easily increas...

Claims

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Application Information

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IPC IPC(8): F16F15/03
CPCF16F15/035
Inventor 王浩祝青鑫郑文智茅建校
Owner SOUTHEAST UNIV
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