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A ball screw type eddy current damper with negative stiffness nonlinear energy well

A non-linear energy trap and eddy current damper technology, applied in the field of structural vibration reduction, can solve the problem of unsolved magnetic leakage of eddy current dampers, etc., and achieve the effects of improving the equivalent vibration quality, reducing costs, and broadening the control frequency band

Active Publication Date: 2022-02-08
湖南省潇振工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the device does not solve the magnetic flux leakage problem of the eddy current damper

Method used

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  • A ball screw type eddy current damper with negative stiffness nonlinear energy well
  • A ball screw type eddy current damper with negative stiffness nonlinear energy well
  • A ball screw type eddy current damper with negative stiffness nonlinear energy well

Examples

Experimental program
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Effect test

Embodiment Construction

[0047] This embodiment discloses a vertically tuned mass ball screw type inertial eddy current damper with negative stiffness nonlinear energy well, such as Figure 1 to Figure 6 As shown, the support frame 12 divides the outer frame 8 into two layers; The top and bottom surfaces of the lower layer are affixed. The mass block 3 is slidably sleeved on the guide rod 7; the free end of the spring 6 is fixedly connected to the mass block 3, and the fixed end of the spring 6 is connected to the support frame 12 or the outer frame 8 fixed connection. The iron plate 4 is attached to the inner wall surface of the upper or lower layer where the mass block 3 is located; the conductor plate 2 is attached to the surface of the iron plate 4; the alternating permanent magnet group 1 is arranged on the The vertical side of the mass block 3, and there is a set gap between the alternating permanent magnet group 1 and the conductor plate 2. The ball screw 5 is vertically arranged, and the fi...

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Abstract

The invention provides a ball screw type eddy current damper with a negative stiffness nonlinear energy well, which includes an outer frame, a vertically arranged guide rod, a support frame, a mass block, a spring, an alternating permanent magnet group, a conductor plate and an iron There is a set gap between the alternating permanent magnet groups and the conductor plate; the damper also includes a vertically arranged ball screw, nut, flywheel and thrust bearing; the damper also includes a negative stiffness nonlinear Same name permanent magnet group and / or different name permanent magnet group for energy sink effect. When the vibration energy of the controlled structure is transmitted to the damper, causing the mass block to vibrate up and down, the permanent magnet group with the same name and / or the permanent magnet group with the same name captures the resonance energy in a wide frequency range, and drives the flywheel to rotate at high speed through the ball screw to generate The inertial mass effect makes the conductor plate cut the magnetic induction lines of the alternating permanent magnet groups to form the eddy current damping effect; the back iron can reduce the magnetic flux leakage and improve the damping energy consumption efficiency.

Description

technical field [0001] The invention belongs to the technical field of structural vibration reduction, and in particular relates to a ball screw type eddy current damper with a negative stiffness nonlinear energy well. Background technique [0002] Tuned mass dampers are widely used in the field of vibration reduction of bridges, high-rise buildings and other engineering structures. It has been proved by theory and practice that tuned mass dampers have a good effect on the control of structural vibration, but the traditional vertical tuned mass damper There are two problems in the device, one is the durability problem, the other is the spring static elongation problem, and the third is the frequency imbalance problem. Facing the needs of rapid social development, it is necessary to solve the above-mentioned problems of the tuned mass damper and to optimize and improve it. [0003] The eddy current damping technology has the characteristics of non-contact and good controllab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02F16F9/32F16F9/53
CPCE04H9/021F16F9/535F16F9/32
Inventor 封周权陈政清华旭刚牛华伟陈智刘易
Owner 湖南省潇振工程科技有限公司
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