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Large-dampness vertical viscoelastic vibration isolating and reducing device

A viscoelastic and vertical technology, applied in the field of broadband excitation work platform, can solve the problem of no vibration damping ability, and achieve the effect of simple and convenient production, reduced shear stiffness and good vibration isolation effect

Inactive Publication Date: 2012-04-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional rubber passive vibration isolation device can only have a good vibration isolation effect on high frequency vibration; because the traditional rubber passive vibration isolation device does not have the ability to reduce vibration

Method used

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  • Large-dampness vertical viscoelastic vibration isolating and reducing device

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Embodiment Construction

[0019] A large damping vertical viscoelastic vibration isolation device of the present invention is composed of a viscoelastic damper 1 and a viscous fluid damper 2, the upper part is a high damping low modulus viscoelastic damper 1, and the lower part is a viscous fluid damper 1 The middle of the fluid damper 2 is an air bladder (equivalent to an air spring) surrounded by a viscoelastic material and a viscous fluid. The upper viscoelastic damper 1 is connected with the upper connecting plate 3 through the guide rod 12, and is connected with the outer cylinder 21 and the piston disc 23 of the lower viscous fluid damper respectively through its outer cylinder 11 and guide rod 12, so that the device The various parts are connected into a whole. The high-damping low-modulus viscoelastic damper 1 is composed of an outer cylinder 11, a guide rod 12 and a viscoelastic material 13; They are respectively connected with the outer cylinder, the connecting plate 21 and the piston disc 2...

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Abstract

The invention discloses a large-dampness vertical viscoelastic vibration isolating and reducing device, which is used for preventing the disturbance of working platforms of precise instruments and precise machines in aerospace. The device is formed by combination of a high-dampness low-modulus viscoelastic damper and a viscous fluid damper, wherein the high-dampness low-modulus viscoelastic damper is arranged at the upper part, and the viscous fluid damper is arranged at the lower part. The high-dampness low-modulus viscoelastic damper is connected with an upper connecting plate by a guide rod; and the high-dampness low-modulus viscoelastic damper and the viscous fluid damper are connected respectively by an outer barrel, a lower connecting plate, the guide rod and a piston disc so as to be connected into a whole. The large-dampness vertical viscoelastic vibration isolating and reducing device combines the advantages of the viscoelastic damper and the viscous fluid damper, and has the advantages of good performance, low price and convenient manufacture.

Description

technical field [0001] The invention relates to a vibration isolation and damping device for precision instrument work platforms in aerospace, machinery and civil engineering, especially for work platforms with broadband excitation. Background technique [0002] The instrument platform system is often in a complex vibration working environment, and the excessive vibration response may often cause the precision instruments on it to not work normally or even cause damage. Therefore, measures must be taken to eliminate the adverse effects of excessive vibration. Passive control is one of the effective measures. It has the advantages of no need for external energy, relatively simple device structure, easy implementation, good economy and reliability, etc. This technology has been widely used. According to the working environment of each instrument platform system, the disturbance frequency range is considered to be 0-100Hz. Traditional rubber passive vibration isolation device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/02F16F15/023F16F15/04
Inventor 徐赵东朱俊涛
Owner SOUTHEAST UNIV
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