Novel three-dimensional shearing type shock absorber

A technology of shear type and shock absorber, which is applied in the direction of shock absorber, shock absorber, spring/shock absorber, etc., can solve the problems of poor designability, large magnification, tension and compression deformation, etc., and improve the mechanical environment , the effect of reducing the magnification

Pending Publication Date: 2020-09-11
天津东丰和美新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, in the case of limited equipment installation space and interface size, its designability is poor, and it is difficult to design a three-way equal frequency
[0004] figure 2 and image 3 As shown, they are all metal-rubber composite structure shock absorbers 300, which are composed of upper metal parts 301, lower metal parts 302, and rubber 303. Although the three-way equal frequency can be achieved through structural design, the rubber material still mainly generates vibration during vibration. Tension and compression deformation, so the structure is dominated by tension and compression energy consumption, the damping coefficient of the shock absorber structure is low, and the magnification is large, generally more than 4 times

Method used

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  • Novel three-dimensional shearing type shock absorber
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  • Novel three-dimensional shearing type shock absorber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] A radome weighs 10kg. Before leaving the factory, a 1g sine sweep test is performed to find out the resonance point, and then a 2g fixed-point sine vibration is applied to the resonance point. Due to the large amplification, cracks appear on the radome FRP panel. The magnification factor measured on site is as high as More than 30 times. After failure analysis, it was decided to adopt the three-way shear damper 100 of the present application. According to the installation space requirements, the outer diameter D1 of the metal inner cylinder 1 is determined to be 10 mm, so that the first buffer member 4 has an inner diameter D2 = 10 mm, an outer diameter D3 = 16 mm, a thickness t1 = 3 mm, and a height H1 = 15 mm. The inner diameter D4 of the second buffer member 5 = 16 mm, the outer diameter D5 = 32 mm, and the thickness t2 = 3 mm. Other relevant dimensions are determined according to actual conditions. The first buffer member 4 and the second buffer member 5 are made o...

Embodiment 2

[0089]An electronic device weighs 3kg and needs to withstand a sine sweep vibration test of 5g and a random vibration test of 13.5g. It requires equal frequencies in three directions, and the magnification of the resonance point is less than 3 times. The traditional metal-rubber composite structure shock absorber can never meet the requirements. requirements, after analysis, it is decided to adopt the application scheme for it. According to the installation space requirements, the outer diameter D1 of the metal inner cylinder 1 is determined to be 12 mm, so that the first buffer member 4 has an inner diameter D2 = 12 mm, an outer diameter D3 = 18 mm, t1 = 3 mm, and a height H1 = 18 mm. The inner diameter D4 of the second buffer member 5 = 19 mm, the outer diameter D5 = 39 mm, and the thickness t2 = 3.5 mm. Other relevant dimensions are determined according to actual conditions. The first buffer member 4 is made of high-damping silicon rubber material with a dynamic elastic mod...

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Abstract

The invention discloses a novel three-dimensional shearing type shock absorber and relates to the technical field of shock absorbing. The shock absorber comprises a metal inner cylinder, a metal outercylinder and a lower metal part. The metal outer cylinder comprises a cylinder portion and a turnup portion. The cylinder portion is arranged outside the metal inner cylinder in a sleeving manner. The cylinder portion and the metal inner cylinder are connected through a first buffering part. The lower metal part is connected with the turnup portion through a second buffering part. According to the shock absorber, the first buffering part can deform in a shearing manner in the axial direction of the shock absorber, the second buffering part can deform in a shearing manner in the radial direction of the shock absorber, and thus the shock absorber focuses on shearing energy consumption in three directions on the severe vibration and impact mechanics conditions. Compared with a traditional shock absorber, the magnification times of resonance points is reduced greatly, and thus the mechanic environment of shock absorbed equipment is improved powerfully. In addition, according to the novelthree-directional shearing type shock absorber, the first buffering part and the second buffering part can be designed flexibly according to the actual conditions, and thus equivalent frequency in three directions can be met when the shock absorber is used.

Description

technical field [0001] The present application relates to the technical field of rubber vibration isolators, in particular to a novel three-way shear type vibration absorber. Background technique [0002] Rubber shock absorbers are widely used because of their simple manufacturing process and convenient and effective use. The rubber shock absorber mainly converts the vibration and impact energy into the thermal energy and elastic potential energy of the rubber material through the deformation of the rubber part, so as to play the role of vibration isolation and buffering. An important index to measure the rubber shock absorber is the magnification of the resonance point. The smaller the magnification of the resonance point, the smaller the response of the damped equipment at the resonance frequency point and the better the mechanical environment. The greater the structural damping coefficient of the rubber shock absorber, the smaller the magnification of the resonance point...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/38
CPCF16F1/38F16F2224/025
Inventor 黄加才
Owner 天津东丰和美新材料科技有限公司
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