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Vibration suppression structure

A folded plate structure and vibration plate technology, applied in the direction of shock absorber, inertial effect shock absorber, spring/shock absorber, etc. Large size, heavy weight and other problems, to avoid the design frequency offset, broaden the working frequency band, reduce the working frequency

Pending Publication Date: 2021-05-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most low-frequency vibration suppression structures require large size or high weight cost, and are not suitable for occasions with compact structure, narrow space or complex application scenarios
Moreover, the existing vibration suppression structures have obvious vibration suppression directionality and narrow-band characteristics. At the same time, because these vibration suppression structures contain sensitive sheets that are greatly affected by external forces, it is difficult to meet multi-directional vibration suppression, broadband vibration suppression and service performance. stable demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The invention provides a suppressing structure in which the resonator is placed in the shell, such as Figure 1-7 As shown, it includes the shell 1 and the vibrating plate 2. The vibrating plate 2 is the main component for suppressing low-frequency vibration. Part or all of the vibrating plate 2 is placed in the shell 1. The shell 1 can effectively protect the main resonance of the vibrating plate 2. structure, to avoid the design frequency shift caused by the resonant structure being affected by external force, and improve the low-frequency vibration suppression effect. specifically:

[0046] The housing 1 is mainly a cavity structure surrounded by a top plate 11 , a side plate 12 and a bottom plate 13 , and the side plate 12 is located between the top plate 11 and the bottom plate 13 . The shape of the shell 1 surrounding the cavity structure can be square, cylindrical, truncated cone, arc, irregular, etc., mainly depending on the structure that needs low-frequency v...

Embodiment 2

[0050] Embodiment 2 is formed on the basis of Embodiment 1, and the vibration suppression performance of the vibration suppression structure is improved by optimizing the design of the overall structure of the vibration plate connected to the housing. specifically:

[0051] Such as Figure 1-7 As shown, the number of vibrating plates 2 connected to each side of the clamping port 131 is multiple and arranged at intervals, preferably arranged side by side at intervals, that is, there is a certain gap between the second vibrator plates 22 . The number and structure of the vibrating plates 2 located on opposite sides of the clamping opening 131 are preferably arranged symmetrically. A plurality of side-by-side vibrating plates 2 can be arranged on each side of the clamping opening 131 .

[0052] As a deformed structure, multiple parallel flapping wings 221 are formed on the second vibrator plate 22 in the form of slits, and the multiple parallel vibrating wings 221 can be equiva...

Embodiment 3

[0054] Embodiment 3 is formed on the basis of Embodiment 1 or Embodiment 2. Through the optimized design of the overall structure of the second vibrator plate in the vibration plate, the overall operating frequency of the vibration plate is reduced, and the low-frequency vibration suppression effect is improved. specifically:

[0055] Such as Figure 1-7 As shown, the first microhole 222 is opened on the second vibrator plate 22, and there are a plurality of first microholes 222. Preferably, the plurality of first microholes 222 are evenly distributed on the second vibrator plate 22. When the second vibrator When the plate 22 is provided with a plurality of flapping fins 221 , the first microholes 222 are distributed on the flapping fins 221 . The second vibrator plate 22 is provided with a first microhole 221 , which can further adjust the bending stiffness of the second vibrator plate 22 , thereby lowering the overall operating frequency of the vibrator plate.

[0056] Fur...

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Abstract

The invention relates to a vibration suppression structure in the technical field of vibration control. The vibration suppression structure comprises a shell and vibration plates; the shell comprises a top plate, a side plate and a bottom plate, the top plate and the bottom plate are connected through the side plate to form a cavity structure, and the bottom plate is provided with a clamping opening; the vibration plates comprise first vibrator plates and second vibrator plates, and the first vibrator plates and the second vibrator plates are integrally formed into a folded plate structure; and the first vibrator plates are connected to the side edge of the clamping opening, the second vibrator plates are located between the top plate and the bottom plate, and the two opposite side edges of the clamping opening are connected with the vibration plates respectively. The shell wraps the vibration plates with high parameter sensitivity to form a closed or semi-closed vibration suppression structure, design frequency deviation caused by the fact that the resonance structure is affected by external force can be effectively avoided, and the low-frequency vibration suppression effect is improved.

Description

technical field [0001] The invention relates to the technical field of vibration control, in particular to a vibration suppression structure. Background technique [0002] Mechanical and electrical equipment, household appliances, vehicles, industrial pipelines, building doors and windows and other objects, the high-level structural vibration and radiated noise generated by the power device or external load excitation will damage people's hearing and cause structural fatigue damage , endangering the safety of life and property. Among them, low-frequency structural vibrations have longer wavelengths and stronger propagation capabilities, and effective suppression of them requires a great deal of space and weight. [0003] The existing structural vibration suppression technology is mainly based on the principle of dynamic vibration absorption, adding a "spring-mass" resonant system to the original part to be suppressed, and using the inertial force generated by the resonant s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/10
CPCF16F7/10F16F7/1028F16F2222/08
Inventor 汤又衡王晓乐罗旭东赵春宇黄震宇
Owner SHANGHAI JIAO TONG UNIV
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