Quasi-zero stiffness vibration isolator with low frequency broadband characteristics

A quasi-zero stiffness, vibration isolator technology, applied in springs/shock absorbers, vibration suppression adjustment, non-rotational vibration suppression, etc. Long service life, easy control, obvious effect of innovation advantage

Inactive Publication Date: 2020-01-03
GUIZHOU JONYANG KINETICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a quasi-zero-stiffness mechan

Method used

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  • Quasi-zero stiffness vibration isolator with low frequency broadband characteristics
  • Quasi-zero stiffness vibration isolator with low frequency broadband characteristics
  • Quasi-zero stiffness vibration isolator with low frequency broadband characteristics

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Embodiment

[0025] As shown in the figure, the present invention is a quasi-zero-stiffness vibration isolator with a PAM (pneumatic artificial muscle), a new quasi-zero-stiffness vibration isolator with three magnetic rings. On the whole, it is composed of a spherical hinge bearing platform 1, an upper end cover, a shell, a three-ring negative stiffness mechanism, a PAM positive stiffness mechanism and a base. It specifically includes a ball joint bearing platform 1, a central shaft 2, a linear bearing 3, an upper end cover 4, an upper magnetic ring 5, an inner magnetic ring 6, a lower magnetic ring 7, an inner shell 8, an outer shell 9, and the upper cover of the pneumatic artificial muscle 10. Pneumatic artificial muscle 11, mounting seat 12 and base 13 of pneumatic artificial muscle. The ball joint bearing platform 1 is at the top, and has four through holes 22 , through which the vibration-isolated object is directly connected with the ball joint bearing platform 1 by bolts through th...

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Abstract

The invention discloses a quasi-zero stiffness vibration isolator with low frequency broadband characteristics. The quasi-zero stiffness vibration isolator comprises a negative stiffness mechanism anda positive stiffness mechanism, wherein the negative stiffness mechanism comprises an upper fixing magnetic ring, a lower fixing magnetic ring and a middle free magnetic ring; and the free magnetic ring is mounted on a middle shaft (2), the middle shaft (2) is connected with the positive stiffness mechanism, and the positive stiffness mechanism is an artificial muscle structure. According to thequasi-zero stiffness vibration isolator, the negative-rigidity three-magnet ring structure is innovatively designed (which is used for fixing the upper and the lower magnetic rings, an inner magneticring is fixed to the middle shaft to move along with the shaft), the positive stiffness is easy to control by utilizing a platform carrying PAM, the positive and negative structures can be adaptivelyadjusted along with a vibration isolation object, the engineering practicability is equipped with an upper and lower connecting mechanism, and a spherical hinge structure at the upper end is further broaden the using field and the service life of the vibration isolator.

Description

technical field [0001] The invention relates to a vibration isolator. Background technique [0002] The so-called quasi-zero stiffness refers to the use of a negative stiffness mechanism and a positive stiffness mechanism in series. The vibration system with a negative stiffness mechanism has the advantages of low natural frequency, large bearing capacity, and good vibration isolation effect. At present, the spring mechanism and the magnetic structure are usually used as a positive stiffness mechanism and a negative stiffness mechanism respectively. For example, a quasi-zero stiffness vibration isolator disclosed in Chinese patent CN 109681573 A uses an electromagnetic negative stiffness mechanism and a spring positive stiffness mechanism to form a quasi-stiffness mechanism. , and the load-bearing capacity of the spring is weak, and the deformation range will be relatively large, which is not good for the human body experience as a vehicle seat. And the negative stiffness m...

Claims

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Application Information

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IPC IPC(8): F16F15/03F16F15/023
CPCF16F15/023F16F15/03
Inventor 韦天山李占龙杨强何霞班顶顺
Owner GUIZHOU JONYANG KINETICS
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