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Quasi-zero stiffness vibration isolation platform suitable for ultralow-frequency vibration isolation

A vibration isolation platform, quasi-zero stiffness technology, applied in low internal friction springs, vibration suppression adjustment, spring/shock absorber functional characteristics, etc., can solve problems such as unsatisfactory vibration isolation effect, and achieve simple and convenient assembly and low cost , the effect of saving money

Active Publication Date: 2021-03-26
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem that the existing vibration isolation platform adopts a typical linear spring, and its vibration isolation effect is not ideal, and further provides a quasi-zero stiffness vibration isolation platform suitable for ultra-low frequency vibration isolation

Method used

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  • Quasi-zero stiffness vibration isolation platform suitable for ultralow-frequency vibration isolation
  • Quasi-zero stiffness vibration isolation platform suitable for ultralow-frequency vibration isolation
  • Quasi-zero stiffness vibration isolation platform suitable for ultralow-frequency vibration isolation

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specific Embodiment approach 1

[0038] Specific implementation mode one: combine figure 1 Describe this embodiment. The quasi-zero stiffness vibration isolation platform suitable for ultra-low frequency vibration isolation described in this embodiment includes two link spring assemblies and a central vibration isolation platform assembly. The two link spring assemblies They are respectively arranged on both sides of the central vibration isolation platform assembly, and each of the link spring assemblies is rotatably connected with the central vibration isolation platform assembly.

[0039] The invention utilizes the nonlinear change of the system's own stiffness to realize that the dynamic stiffness of the system is close to zero during the vibration process, thereby achieving the purpose of ultra-low frequency vibration isolation.

[0040] The design idea of ​​this vibration isolation platform is clear, and the structural design is relatively simple, the cost is relatively cheap, and it can also play a tar...

specific Embodiment approach 2

[0041] Specific implementation mode two: combination Figure 2 to Figure 6 Describe this embodiment, the central vibration isolation platform assembly described in this embodiment includes a loading platform 1, two platform connecting rods 2, load-bearing springs 3 and a grounding platform 4,

[0042] The loading platform 1 and the grounding platform 4 are arranged horizontally from top to bottom, the upper end of the load-bearing spring 3 is connected to the lower surface of the loading platform 1, the lower end of the load-bearing spring 3 is connected to the upper surface of the grounding platform 4, and the connecting rods of the two platforms 2 are symmetrically arranged on both sides of the loading platform 1, and the upper end of the platform connecting rod 2 is rotationally connected with the loading platform 1, and the lower end of the platform connecting rod 2 is connected with the connecting rod spring assembly.

[0043] Other components and connections are the same...

specific Embodiment approach 3

[0044] Specific implementation mode three: combination figure 2 and image 3 To illustrate this embodiment, the middle part of the lower surface of the loading platform 1 in this embodiment is provided with a first threaded cap 1-1, and the upper end of the load-bearing spring 3 is connected to the first threaded cap 1-1.

[0045] Other components are the same as those in the second embodiment in terms of connections.

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Abstract

The invention relates to a vibration isolation platform, in particular to a quasi-zero stiffness vibration isolation platform suitable for ultra-low frequency vibration isolation, and aims to solve the problem that an existing vibration isolation platform adopts linear springs and is not ideal in vibration isolation effect. The quasi-zero stiffness vibration isolation platform comprises two connecting rod spring assemblies and a central vibration isolation platform assembly, the two connecting rod spring assemblies are arranged on the two sides of the central vibration isolation platform assembly respectively, and each connecting rod spring assembly is rotationally connected with the central vibration isolation platform assembly. By utilizing the nonlinear change of the rigidity of the system, the dynamic rigidity of the system is close to zero in the vibration process, so that the purpose of ultralow-frequency vibration isolation is achieved. The quasi-zero stiffness vibration isolation platform is clear in design thought, simpler in structural design, lower in manufacturing cost and capable of achieving the targeted ultralow-frequency vibration isolation effect. The quasi-zero stiffness vibration isolation platform not only can well verify simulation and experiment results in research, but also can be applied to life and engineering.

Description

technical field [0001] The invention relates to a vibration isolation platform, in particular to a quasi-zero stiffness vibration isolation platform suitable for ultra-low frequency vibration isolation. The invention belongs to the technical field of mechanical vibration and noise control. Background technique [0002] In actual engineering production, we often encounter some vibration problems. During the construction process, we hope to weaken and suppress these vibrations and reduce the potential safety hazards caused by them. The classic linear spring vibration isolation platform has been widely used in this aspect, but due to the stiffness of the spring itself, the vibration isolation effect of this vibration isolation platform, especially in the ultra-low frequency vibration isolation, has gradually been unable to meet the existing vibration isolation requirements. . Contents of the invention [0003] The invention solves the problem that the existing vibration isol...

Claims

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Application Information

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IPC IPC(8): F16F3/04F16F1/12F16F15/067
CPCF16F3/04F16F1/12F16F15/067F16F2228/06
Inventor 熊远皓李凤明
Owner HARBIN ENG UNIV
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