An Air Spring Low Frequency Vibration Isolation Device Based on Miura Folding

An air spring and vibration isolation technology, applied in springs, gas shock absorbers, springs/shock absorbers, etc., can solve the problems of high static stiffness, low dynamic stiffness, complex mechanical structure, etc., and achieve adjustable vibration isolation performance, Simple structure and strong periodic effect

Active Publication Date: 2019-08-02
NANJING NAVECO AUTOMOBILE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It connects the main spring (positive stiffness spring) and the negative stiffness mechanism in parallel so that the shock absorber has the characteristics of high static stiffness and low dynamic stiffness, and realizes zero-hertz ultra-low frequency vibration isolation. Quality adjusts the stiffness curve of the vibration isolator to achieve adjustable vibration isolation performance; balls are used to achieve rolling friction to reduce frictional resistance; however, the problem with this vibration isolator is that the mechanical structure is relatively complex, and its application is difficult when the space scale is small

Method used

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  • An Air Spring Low Frequency Vibration Isolation Device Based on Miura Folding
  • An Air Spring Low Frequency Vibration Isolation Device Based on Miura Folding
  • An Air Spring Low Frequency Vibration Isolation Device Based on Miura Folding

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Embodiment 1

[0034] Such as figure 1As shown, the present invention is based on the Miura folded air spring low-frequency vibration isolation device, and the installation and use of the vibration isolation device has a large space, such as when used in the field of small and medium-sized machinery, the parallelogram structure in the Miura structural unit adopts Larger and less deformable steel sheet, its dimensional characteristics are a=b, γ=75°. The connection between each structure adopts a rotating pair similar to ordinary door hinges, including the fixing parts installed on the two adjacent structures. The protrusions at the edges of the fixing parts are provided with shaft holes. When the adjacent two fixing parts When the shaft holes are butted, a rotating shaft is inserted in the aligned shaft holes of adjacent fixing parts, so that the adjacent structures can rotate relative to each other along the rotating shaft. This allows adjacent structures to be folded or unfolded relative ...

Embodiment 2

[0036] Such as figure 1 As shown, the present invention is based on the Miura folded air spring low-frequency vibration isolation device, and the installation and use place of the vibration isolation device is centimeter or millimeter level. The parallelogram structure is made of hard plastic, and its size is characterized by a=b, γ=75°. Each structure is connected to each other through a flexible part that can be bent. In this embodiment, the flexible part is a plastic mold, and the various structures are connected together through a plastic film 6 and the relationship between the rotation pairs between their adjacent sides is maintained, such as Figure 10 shown. The linear stiffness spring is placed in the center of the cellular structure, and the spring and the upper and lower ends of the cellular structure are bonded to the top plate and the floor. By connecting an air source device externally to the air inlet 41 and installing a pressure reducing valve on the air outle...

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Abstract

The invention relates to an air spring low-frequency vibration isolation device based on mirua folding. The low-frequency vibration isolation device comprises a top plate and a baseplate matched withthe top plate, and an elastic vibration isolation mechanism is arranged between the top plate and the baseplate; the elastic vibration isolation mechanism is composed of a mirua folding type multi-cell structure and a linear spring, and the linear spring is arranged on the central axis of the mirua folding type multi-cell structure; the upper end of the linear spring is connected to the top platefixedly, and the lower end of the linear spring is connected to the baseplate fixedly; and a clearance for preventing mutual interference is provided between the linear spring and the mirua folding type multi-cell structure. According to the low-frequency vibration isolation device, the stiffness curve of a vibration isolator can be adjusted according to isolated masses through adjustment of the internal pressure of the multi-cell structure, adjustment of characteristics of a linear stiffness spring or change of dimension parameters of a parallelogram, and the adjustability of the vibration isolation performance is achieved.

Description

technical field [0001] The invention relates to a low-frequency vibration isolation device, in particular to an air spring low-frequency vibration isolation device based on Miura folding, and belongs to the technical field of composite pipes. Background technique [0002] In low-frequency excitation environment (such as vehicle seats, precision instruments and other equipment), low-frequency vibration has a major impact on the health of drivers or the accuracy and service life of precision instruments. The adjustable low-frequency vibration isolation device can effectively isolate the vibration on the one hand, and can adjust the performance of the vibration isolation device according to the change of the load. In addition, due to the different application places, it is required that the vibration isolation device can be flexibly applied to various spatial scales. [0003] Chinese invention patent "Ultra-low frequency vibration isolator based on parallel connection of posit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F13/06F16F9/04F16F9/32
CPCF16F9/0409F16F9/3207F16F13/06
Inventor 李振王良模张汤赟谢桃新朱晓袁刘凯
Owner NANJING NAVECO AUTOMOBILE CO LTD
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