Eddy current three-dimensional damping device

A vibration damping device and eddy current technology, which is applied in the direction of spring/shock absorber, vibration suppression adjustment, erection/assembly of bridges, etc., can solve the problems of complex vibration, achieve the effect of prolonging service life, avoiding difficult assembly and convenient maintenance

Active Publication Date: 2018-06-15
SOUTHEAST UNIV
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Problems solved by technology

[0008] Technical problem: Aiming at the problem of complex vibration in the working process of existing civil engineering structures, the present invention provides an eddy current three-dimensional vibration damping device

Method used

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  • Eddy current three-dimensional damping device

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Embodiment Construction

[0035] The damping device includes a box body, a connecting screw hole A, a rotating shaft, a torsion spring, an outer sphere, a middle sphere, an inner sphere, an additional mass A, an additional mass B, a connecting screw B, an inner sphere fan blade, The inner sphere base, the middle sphere fan blade, the middle sphere base, the outer sphere fan blade, and the outer sphere base; the outer sphere fan blade and the inner sphere fan blade are made of materials with excellent magnetic properties (such as: NdFeB ), and the middle spherical fan blade is made of a material with good electrical conductivity (such as copper). The rotating shaft, the box body, the inner sphere base, the middle sphere base and the outer sphere base are all made of non-magnetic materials (such as: aluminum alloy material, carbon fiber material).

[0036] The inner spherical fan blade is installed on the inner spherical base, and connected by bolts through connecting screw holes.

[0037] The inner sph...

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PUM

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Abstract

The invention provides an eddy current three-dimensional damping device. The damping device comprises a box body, a connecting screw hole A, a rotary shaft, a torsion spring, an outer layer sphere, amiddle layer sphere, an inner layer sphere, an additional mass block A, an additional mass block B, a connecting screw hole B, an inner layer sphere fan blade, an inner layer sphere base, a middle layer sphere fan blade, a middle layer sphere fan blade, an outer layer sphere fan blade, and an outer layer sphere base. Firstly when the structure vibrates, a TMD damper composed of the additional massblocks, the torsion spring and all the spheres conducts energy transferring to reduce structural vibration; and secondly, in the work process of the TMD damper, energy is dissipated through eddy current damp generated by relative movement of a conductor and a permanent magnet. According to the eddy current three-dimensional damping device, through nesting of the spheres, three-dimensional movement of the additional mass blocks is achieved; through arrangement of different spherical materials and by utilizing the eddy current damp, the energy is dissipated, and multi-dimensional damping is achieved; and by adjusting the rigidity of the torsion spring and the mass of the additional mass blocks, the used frequency range of the damping device can be adjusted.

Description

technical field [0001] The invention relates to an eddy current three-dimensional damping device, which is suitable for damping control of various civil engineering structures such as bridges, buildings, power transmission towers, and offshore wind turbines. Background technique [0002] With the continuous improvement of my country's infrastructure construction, the importance of super-long-span bridges, super-high-rise building structures, high-speed railways and subways is increasing day by day, and with the development of civil engineering technology and building materials, civil engineering structures tend to be light-weight and large-scale. The characteristics of span, super high-rise and complex form. Such structures are prone to large deformation and vibration under dynamic load. Vibration of the structure will not only cause discomfort to the upper personnel, but excessive deformation and vibration will easily increase the internal stress of the structure, reduce th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E01D21/00
CPCE01D21/00E04B1/98F16F15/035
Inventor 王浩祝青鑫郑文智茅建校胡所亭赵欣欣
Owner SOUTHEAST UNIV
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