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A packaged constant quasi-zero stiffness vibration isolator

A quasi-zero stiffness, vibration isolator technology, applied in the direction of spring/shock absorber functional characteristics, spring/shock absorber design characteristics, vibration suppression adjustment, etc., can solve the problems of large additional mass, small bearing capacity, complex structure, etc. , to achieve the effect of small additional mass, large carrying capacity and small volume

Active Publication Date: 2022-05-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] In order to solve the shortcomings of existing quasi-zero stiffness vibration isolators such as small bearing capacity, large additional mass, large damping, and complex structure, which can only achieve quasi-zero stiffness at the balance position, the invention provides a packaged constant quasi-zero stiffness vibration isolator

Method used

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  • A packaged constant quasi-zero stiffness vibration isolator
  • A packaged constant quasi-zero stiffness vibration isolator
  • A packaged constant quasi-zero stiffness vibration isolator

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples. The principles and features of the present invention are described below in conjunction with the accompanying drawings. It should be noted that the accompanying drawings are only schematic diagrams provided for explaining the present invention, rather than real physical projection drawings; The embodiments and the features in the embodiments can be combined with each other. The examples given are only for explaining the present invention, not for limiting the scope of the present invention.

[0037] Such as Figure 1 to Figure 9 , figure 1 It is a schematic cross-sectional structure diagram of a specific embodiment of a packaged constant quasi-zero stiffness vibration isolator disclosed in the present invention; figure 2 for figure 1 The schematic diagram of the three-dimensional structure after the fixed housing is hidden in the specific embodiment sho...

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Abstract

The invention provides a packaged constant quasi-zero stiffness vibration isolator, which includes a fixed shell, an upper elastic frame, a lower elastic frame, a compression rod and a middle block; Guide holes; the lower elastic frame is an elastic structure with vertical expansion; the upper elastic frame is an elastic structure with vertical expansion; the compression rods are even numbers, and they are arranged in the middle Around the block; in the initial position, the end of the compression rod abutting against the middle block is higher than the hinge, buckling and deformed under the pressure of the workpiece to be isolated, and rotated to a horizontal position around the hinge After reaching the best working position. The vibration isolator in the present invention has simple structure, small volume, small additional mass, large bearing capacity, can be adjusted to be suitable for different masses, can realize quasi-zero stiffness in the whole stroke range, and can be quantitatively designed according to actual engineering requirements parameter.

Description

technical field [0001] The invention belongs to the field of low-frequency or ultra-low-frequency vibration isolators, in particular to a packaged constant quasi-zero stiffness vibration isolator. Background technique [0002] The quasi-zero-stiffness shock absorber is to connect the negative-stiffness element in parallel with the positive-stiffness original, so as to realize the zero-stiffness characteristic at the static equilibrium position. Compared with traditional linear vibration isolators (the effective vibration isolation frequency is greater than times the natural frequency, and the vibration isolation frequency range is narrow), the quasi-zero stiffness vibration isolator is proposed to achieve the characteristics of high static stiffness and low dynamic stiffness, while having a large bearing capacity, the structural deformation is small, and the vibration isolation frequency band is widened . According to different types of negative stiffness structures, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/02F16F15/04F16F15/067
CPCF16F15/02F16F15/04F16F15/067F16F2228/066F16F2230/0011F16F2230/32
Inventor 胡晓滢周春燕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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