Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Quasi-zero stiffness vibration isolator based on transverse groove spring

A quasi-zero stiffness, vibration isolator technology, applied in the design characteristics of spring/shock absorber, spring/shock absorber functional characteristics, spring/shock absorber, etc., can solve small static displacement, linear vibration isolator cannot Realization, wide vibration isolation frequency band and other issues, to achieve the effect of simple structure, good low frequency vibration isolation effect, wide vibration isolation frequency band

Pending Publication Date: 2019-03-22
HARBIN INST OF TECH
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing linear vibration isolator cannot simultaneously realize a wider vibration isolation frequency band and a smaller static displacement, and propose a quasi-zero stiffness vibration isolator based on transverse groove springs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Quasi-zero stiffness vibration isolator based on transverse groove spring
  • Quasi-zero stiffness vibration isolator based on transverse groove spring
  • Quasi-zero stiffness vibration isolator based on transverse groove spring

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0026] A quasi-zero-stiffness vibration isolator based on transverse groove springs in this embodiment comprises a positive stiffness mechanism, a balance position adjustment structure support frame 5, and a set of negative stiffness mechanisms; the upper surface of the bottom plate of the support frame 5 is set The balance position adjustment structure, the upper part of the balance position adjustment structure is provided with a positive stiffness mechanism, and the positive stiffness mechanism is connected to the inner wall of the side panel of the support frame 5 through a group of negative stiffness mechanisms around it, and both ends of the negative stiffness mechanism are respectively connected to the The positive stiffness mechanism is connected with the inner wall of the side panel of the support frame 5 .

specific Embodiment approach 2

[0027] Different from Embodiment 1, in this embodiment, a quasi-zero-stiffness vibration isolator based on transverse groove springs, the negative stiffness mechanism includes an oblique spring 4 and two sets of rotating pairs, each set of rotating pairs Including the rotating pin 2 and the oblique spring seat 1, the two ends of the oblique spring 4 are respectively hinged with the oblique spring seat 1 through the rotating pin 2, one of which is fixedly installed on the inner wall of the side panel of the support frame 5, and the other oblique spring seat 1 fixedly installed on the positive stiffness mechanism.

specific Embodiment approach 3

[0028] The difference from the second embodiment is that in this embodiment, a quasi-zero stiffness vibration isolator based on transverse groove springs, the positive stiffness mechanism includes a vertical spring 6 and a bearing platform 3; the top of the vertical spring 6 is the same as The bearing platform 3 is fixedly arranged on the axis, and an oblique spring seat 1 of the negative stiffness mechanism is fixed on the side of the bearing platform 3 of the positive stiffness mechanism.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a quasi-zero stiffness vibration isolator based on a transverse groove spring, and belongs to the field of vibration isolators. An existing linear vibration isolator cannot simultaneously achieve a wide vibration isolation frequency band and small static displacement. According to the quasi-zero stiffness vibration isolator based on the transverse groove spring, a balance position adjustment structure is arranged on the upper surface of a bottom plate of a supporting frame; a positive stiffness mechanism is arranged on the upper part of the balance position adjustment structure; and the periphery of the positive stiffness mechanism is connected to the inner wall of a side face plate of the supporting frame through a set of negative stiffness mechanisms, and the twoends of the negative stiffness mechanisms are connected with the positive stiffness mechanism and the inner wall of the side face plate of the supporting frame through rotating pairs correspondingly.The dynamic stiffness at the balance position is zero, the vibration isolation performance for ultra-low frequency vibration is improved, and the effect of full frequency band isolation can further beachieved especially for basic excitation.

Description

technical field [0001] The invention relates to a vibration isolator, in particular to a quasi-zero stiffness vibration isolator. Background technique [0002] Most vibrations in engineering are harmful. For example, the vibration of vehicle seats will reduce the ride comfort, the vibration of machine tools will reduce the machining accuracy, and the vibration of optical satellites will reduce the imaging quality, and the list goes on. Therefore, vibration isolation technology is particularly important. The initial vibration isolation frequency of the earliest linear vibration isolator is the natural frequency of the system. For a certain payload, only by reducing the stiffness can the natural frequency be reduced, thereby reducing the initial frequency of vibration isolation and improving the performance of low-frequency vibration isolation. However, if the stiffness is too low, the static displacement will be too large. This contradiction of linear isolators is due to t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16F15/04
CPCF16F15/04F16F2230/0005F16F2228/06F16F2238/026
Inventor 柳超然于开平庞世伟
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products