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Buckling beam quasi-zero rigidity vibration isolator

A quasi-zero stiffness, vibration isolator technology, applied in the direction of building components, earthquake resistance, building types, etc., can solve the problems of insufficient vibration isolation effect, achieve excellent low-frequency vibration isolation performance, small installation space, and good vibration isolation performance Effect

Pending Publication Date: 2020-05-22
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the external vibration amplitude is small, the ideal vibration isolation effect cannot be achieved

Method used

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  • Buckling beam quasi-zero rigidity vibration isolator
  • Buckling beam quasi-zero rigidity vibration isolator
  • Buckling beam quasi-zero rigidity vibration isolator

Examples

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Embodiment Construction

[0035] In order to facilitate the understanding of those skilled in the art, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0036] Such as Figure 1-4, a buckling beam quasi-zero stiffness vibration isolator, comprising a bottom plate 1 and a top plate 2 arranged parallel to the bottom plate 1, and a positive plate connecting the bottom plate 1 and the top plate 2 is arranged between the bottom plate 1 and the top plate 2 Stiffness mechanism and negative stiffness mechanism, the negative stiffness mechanism includes two elastic arms intersected, the elastic arms include a first base 42 and a second base 43, and the first base 42 and the second base 43 are provided with Two oppositely arranged buckling beams 41, the middle parts of the two buckling beams 41 are bent outwards, and the two ends of the buckling beams 41 are respectively connected to the first base 42 and the second base 43, and the f...

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Abstract

The invention relates to a buckling beam quasi-zero rigidity vibration isolator, and belongs to the field of vibration control. The buckling beam quasi-zero rigidity vibration isolator comprises a bottom plate and a top plate parallel to the bottom plate. A positive rigidity mechanism and a negative rigidity mechanism which connect the bottom plate and the top plate are arranged between the bottomplate and the top plate. The negative rigidity mechanism comprises two elastic arms arranged in a crossed manner. Each elastic arm comprises a first base and a second base, wherein two pairs of oppositely-arranged buckling beams are arranged between the first base and the second base, the middle portions of the two buckling beams are bent outwards, the two ends of the buckling beams are connectedto the first base and the second base correspondingly, and the first base and the second base are in pivot joint to the lower surface of the top plate and the upper surface of the bottom plate through rotation shafts correspondingly. The buckling beam quasi-zero rigidity vibration isolator shows good vibration isolating performance under the situation that the vibration amplitude is very small, and the buckling beam quasi-zero rigidity vibration isolator can be applicable to isolating micro-amplitude low-frequency vibration.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to a buckling beam quasi-zero stiffness vibration isolator. Background technique [0002] With the continuous development of modern science and technology, vibration isolation technology plays an increasingly important role in industrial production and engineering projects. Vibration control at low or ultra-low frequencies has long been a challenge. The existing quasi-zero stiffness vibration isolators use springs as the negative stiffness mechanism, which will occupy a large installation space, which is not conducive to the miniaturization of the quasi-zero stiffness vibration isolator, and the emergence of buckling beams provides a new type of negative stiffness mechanism. The possibility of rigid structure has promoted the further development of quasi-zero stiffness low-frequency vibration control technology research. [0003] At present, the existing quasi-zero stiffness vibra...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/02
Inventor 周加喜昌耀鹏赵旭辉曹浩吴晓文
Owner HUNAN UNIV
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