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Multi-freedom-degree low-frequency large-load all-metal passive vibration isolator

A vibration isolator and ultra-low frequency technology, applied in the direction of non-rotational vibration suppression, etc., to achieve the effect of strong adjustment ability, compact structure, and reduced force transmission rate

Active Publication Date: 2015-12-23
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the shock absorbers proposed at present are designed for vertical vibration isolation.

Method used

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  • Multi-freedom-degree low-frequency large-load all-metal passive vibration isolator
  • Multi-freedom-degree low-frequency large-load all-metal passive vibration isolator

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Embodiment Construction

[0036] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In these drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

[0037] refer to Figure 1-2 , the present invention provides a multi-degree-of-freedom ultra-low-frequency large-load all-metal passive vibration isolator, which has high static stiffness and low dynamic stiffness nonlinearity, and overcomes the contradiction between deformation and natural frequency of traditional vibration isolators. Based on the Euler strut and the negative stiffness mechanism, the invention constructs ...

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Abstract

The invention provides a multi-freedom-degree low-frequency large-load all-metal passive vibration isolator. The vibration isolator is composed of a load mounting tray, horizontal vibration isolation press rods, a lower bearing tray, a vertical main bearing shaft, a vertical guide rail, an upper auxiliary platform, vertical supporting beams, negative stiffness adjustors, rolling bearings, a supporting bottom tray, machine feet and the like. Based on the Euler press rods and a negative stiffness mechanism, the three-direction nonlinear vibration isolator which is heavy in load and low in inherent frequency is provided, and the vibration isolation frequency with the minimum of 1.5 Hz can be achieved; and the all-metal structure is adopted, and the environmental adaptation to high temperature is good.

Description

technical field [0001] The invention relates to the technical field of vibration damping device design, in particular to a multi-degree-of-freedom ultra-low-frequency large-load all-metal passive vibration isolator. Background technique [0002] Vibration isolation technology has been widely used in all walks of life in the industry, such as vehicles, ships, and precision machining fields. In order to improve the damping effect, the industry has been pursuing low-frequency or ultra-low-frequency damping components. Conventional linear dampers have a contradiction between low-frequency natural frequency and large static displacement. In the field of low-frequency vibration reduction, passive nonlinear vibration reduction, active and semi-active vibration reduction technologies are widely used at present. Active and semi-active vibration reduction have the disadvantages of needing external energy input and the system is more complicated. In contrast, the system of passive n...

Claims

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Application Information

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IPC IPC(8): F16F15/06
Inventor 黄修长刘兴天徐时吟华宏星
Owner SHANGHAI JIAO TONG UNIV
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