Vertical tuned mass magnetic lead screw type inerter eddy current damper

A technology of magnetic screw and tuning quality, applied in the direction of magnetic spring, shock absorber, spring/shock absorber, etc., can solve the problem of large physical mass of TMD, large static elongation of spring, friction of ball screw type inerter, etc. problems, to achieve the effect of easy modular assembly, lightening of physical counterweight, and smooth movement

Active Publication Date: 2020-12-25
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

[0007] The invention aims to improve the light weight and durability of traditional TMDs, solve the problems of traditional TMDs such as excessive physical mass, excessive spring static elongation, and friction in ball screw inerters, and proposes a vertically tuned mass magnetic force Screw type inertial eddy current damper

Method used

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  • Vertical tuned mass magnetic lead screw type inerter eddy current damper
  • Vertical tuned mass magnetic lead screw type inerter eddy current damper
  • Vertical tuned mass magnetic lead screw type inerter eddy current damper

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Such as figure 1 with 2 Shown is a vertically tuned mass magnetic force screw type inertial eddy current damper, including a spring-mass system, an inertial mass system, an eddy-current damping system and a support system.

[0054] The spring mass system includes a spring (3) and a counterweight (5), the counterweight (5) is in the shape of a cuboid, and a hole larger than the diameter of the guide rod (2) is left on it, so that the counterweight (5) ) is sleeved on the guide rod (2) and can move linearly along it; the spring (3) is sleeved on the guide rod (2), one end is fixed with the counterweight (5), and the other end is connected with the outer frame (1) or the support The bracket (4) is consolidated.

[0055] The inertial mass system includes a flywheel (6), a magnetic screw nut pair (7) and a magnetic suspension thrust bearing (8). The flywheel (6) is sleeved on the magnetic lead screw (72) and the magnetic nut (71) of the magnetic lead screw nut pair (7), a...

Embodiment 2

[0059] Such as image 3 with 4 Shown is a vertically tuned mass magnetic field modulation type magnetic screw type inertial eddy current damper, including a spring-mass system, an inertial mass system, an eddy-current damping system and a support system.

[0060] The spring mass system includes a spring (3) and a counterweight (5), the counterweight (5) is in the shape of a cuboid, and a hole larger than the diameter of the guide rod (2) is left on it, so that the counterweight (5) ) is sleeved on the guide rod (2) and can move linearly along it; the spring (3) is sleeved on the guide rod (2), one end is fixed with the counterweight (5), and the other end is connected with the outer frame (1) or the support The bracket (4) is consolidated.

[0061] The inertial mass system includes a flywheel (6), a magnetic screw nut pair (7), a modulation ring (12) and a magnetic suspension thrust bearing (8). The flywheel (6) is sleeved on the magnetic lead screw (72) and the magnetic nu...

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Abstract

The invention relates to a vertical tuned mass magnetic lead screw type inerter eddy current damper. The vertical tuned mass magnetic lead screw type inerter eddy current damper comprises a spring mass system, an inertia mass system, an eddy current damping system and a supporting system; the spring mass system comprises a spring and a clump weight; the inertia mass system comprises a flywheel, amagnetic lead screw nut pair and a magnetic suspension thrust bearing; the eddy current damping system comprises a straight-strip-shaped permanent magnet, a conductor plate and back iron; and the supporting system comprises guide rods, a supporting bracket and an outer frame. According to the damper, the inerter principle is introduced, physical balance weight is reduced, the net elongation of thespring of a low-frequency structure controlled by the device is reduced while the mass ratio of the device is increased; by adopting the magnetic lead screw nut pair, the friction between a lead screw and a nut is eliminated, and the working efficiency is improved; meanwhile, the magnetic suspension thrust bearing is used cooperatively to ensure that the flywheel is suspended in a flywheel chamber to work normally; and the overall friction of the damper is greatly reduced, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the field of vibration control devices for engineering structures, and in particular relates to a vertical tuning mass magnetic force screw type inertial current eddy current damper. Background technique [0002] Structural vibration reduction using a tuned mass damper (TMD) is a kind of passive control technology for structural vibration. It is widely used in the field of engineering structures. Installing it in a vibrating bridge structure or high-rise building structure has a very obvious effect on structural vibration. inhibitory effect. [0003] However, when the stiffness of the TMD spring element vibrates at low frequencies, its theoretical stiffness decreases significantly at higher frequency bands, and its static elongation of the spring is very large, which cannot meet the use requirements. In order to solve the problem of the static elongation of the TMD spring, an inerter is introduced to combine with it. One of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F6/00F16F15/30F16F15/28F16F15/10E04B1/98E04H9/02
CPCE04H9/02F16F6/005F16F15/10F16F15/28F16F15/30F16F2222/06
Inventor 封周权陈政清宋佳华旭刚牛华伟
Owner 湖南省潇振工程科技有限公司
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