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Rotary magnetic negative-stiffness vibration damper

A vibration-damping device, negative stiffness technology, applied in protected buildings/shelters, building types, buildings, etc., can solve the problems of reducing the vibration reduction effect of tuned mass dampers and tuned liquid dampers, and increase work efficiency , good social and economic benefits, high linkage efficiency

Active Publication Date: 2019-01-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The damping effect of tuned mass dampers and tuned liquid dampers is significantly reduced when excited over a wide frequency range

Method used

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  • Rotary magnetic negative-stiffness vibration damper
  • Rotary magnetic negative-stiffness vibration damper
  • Rotary magnetic negative-stiffness vibration damper

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Embodiment Construction

[0030] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0031] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof;

[0032] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present i...

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Abstract

The invention discloses a rotary magnetic negative-stiffness vibration damper which comprises an outer cylinder. A first ball screw pair, a second ball screw pair and two working bodies are arranged in the outer cylinder. The axis of the first ball screw pair and the axis of the second ball screw pair are mutually parallel, and the first ball screw pair and the second ball screw pair are located between the two working bodies; two ends of each lead screw of the first ball screw pair and the second ball screw pair are both connected with rigid rods, and the four rigid rods penetrate through theworking bodies to be connected to the inner wall of the outer cylinder; the portions, located in the working bodies, of the rigid rods are provided with magnets; sliding grooves are located under thefirst ball screw pair and the second ball screw pair, and the inner walls of the sliding grooves are fixedly connected with nuts of the first ball screw pair and the second ball screw pair; the bottoms of the sliding grooves are provided with sliding wheels, and the sliding wheels can slide along the bottom of the outer cylinder back and forth; mass blocks are placed in the sliding grooves, grooves are reserved in the two sides, parallel to the axes of ball screws, of the mass blocks, and the grooves are matched with sliding blocks fixed to the inner walls of the sliding grooves; the two sides, perpendicular to the axes of the ball screws, of the mass blocks are connected with the sliding grooves through springs.

Description

technical field [0001] The invention belongs to the field of vibration control of civil engineering, in particular to a rotary magnetic negative stiffness damping device, which is mainly used in controlling the vibration response of high-rise buildings and towering structures. Background technique [0002] Traditional anti-seismic structures resist earthquakes by increasing the stiffness of the structure itself. This method often uses the ductility of the building structure to dissipate the energy brought by the earthquake or wind load, and thus reduce the loss as much as possible. However, the external environmental load has inevitable randomness. When it reaches a certain strength, the traditionally designed seismic structure may not be able to bear it, resulting in damage to the building structure, resulting in more serious loss of life and property. With the continuous innovation of building structure forms, combined with the damage mechanism of the structure under the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 田利刘俊才张睿
Owner SHANDONG UNIV
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