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Pad damping and vibration reduction mute floor

A damping and padding technology, which is applied in the field of vibration-absorbing floors and subway car vibration-damping floors, can solve the problems of low padding, achieve the effects of improving the strength too low, improving the damping effect, and improving the damping performance

Active Publication Date: 2018-05-18
QINGDAO SHAMU INT TRADE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the existing subway vibration damping floor, the carbon nanotube modified cushion height damping vibration damping mute floor adopts the carbon nanotube modified hollow groove foam, which not only increases the shear strength and Damping effect, and improve the fire performance of the underlayment, and improve the problem of low strength of the underlayment caused by the hollow groove

Method used

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  • Pad damping and vibration reduction mute floor
  • Pad damping and vibration reduction mute floor
  • Pad damping and vibration reduction mute floor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The raised damping, vibration-reducing and silent floor includes the compartment substrate, the viscoelastic damping layer I, the padding layer, the viscoelastic damping layer II, and the constraining layer arranged in sequence. The compartment substrate, the viscoelastic damping layer I and the cushion layer form the constrained damping structure I; the cushion layer, the viscoelastic damping layer II and the constrained layer constitute the constrained damping structure II. The thickness of the viscoelastic damping layer I, the viscoelastic damping layer II and the viscoelastic damping layer III are all 1 mm, the thickness of the cushion layer is 24 mm, and the thickness of the constraining layer is 2 mm. The cushioning layer is composed of a plurality of closely arranged trapezoidal blocks, and the adjacent trapezoidal blocks are bonded with a viscoelastic damping layer III. The trapezoidal block is an isosceles trapezoidal block, the height of the isosceles trapezoi...

Embodiment 2

[0043] The difference from Example 1 is that the height of the damping and vibration reduction mute floor, the thickness of the viscoelastic damping layer I, the viscoelastic damping layer II and the viscoelastic damping layer III are all 1.5mm, and the thickness of the cushioning layer is 12mm , the thickness of the constrained layer is 3mm. The trapezoidal block is an isosceles trapezoidal block, the height of the isosceles trapezoidal block is the thickness of the cushion layer, the length of the upper side is 140mm, and the length of the lower side is 170mm. The constrained layer 4 is a light aluminum alloy material with a density of 2.70-2.85g / cm 3 .

[0044] The preparation of the carbon nanotube modified polyurethane foam, in the step (3), react the B component mixed with the hydroxylated carbon nanotube and the A component isocyanate at a temperature of 80°C and a pressure of 15MPa , the carbon nanotube modified polyurethane foam can be obtained. The interval betwee...

Embodiment 3

[0046] The difference from Example 1 is that the damping and noise-absorbing floor is raised, the thickness of the viscoelastic damping layer I, the viscoelastic damping layer II and the viscoelastic damping layer III are all 0.5mm, and the thickness of the cushioning layer is 18mm , the thickness of the constrained layer is 4mm. The trapezoidal block is an isosceles trapezoidal block, the height of the isosceles trapezoidal block is the thickness of the cushion layer, the length of the upper side is 70mm, and the length of the lower side is 100mm. The constrained layer 4 is a light aluminum alloy material with a density of 2.70-2.85g / cm 3 .

[0047] In the preparation of the carbon nanotube-modified polyurethane foam, step (3) reacts the B component mixed with the hydroxylated carbon nanotubes and the A component isocyanate at a temperature of 60°C and a pressure of 16MPa to obtain Carbon nanotube modified polyurethane foam. The interval between the adjacent hollow grooves...

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Abstract

The invention discloses a blocked-up damping vibration-attenuation soundproof floor which comprises a carriage base plate, a vicious elastic damping layer I, a blocked-up layer, a vicious elastic damping layer II and a restraint layer which are arranged in sequence. Due to introduction of the blocked-up layer, a conventional restraint damping structure is greatly changed, deformation of the damping layer is expanded, and thus the properties of the damping layer are improved. The carriage base plate, the vicious elastic damping layer I and the blocked-up layer form a restraint damping structure I; the blocked-up layer, the vicious elastic damping layer II and the restraint layer form a restraint damping structure II; the blocked-up layer consists of a plurality of densely arranged trapezoid blocks; and adjacent trapezoid blocks are adhered through vicious elastic damping layers III. As the restraint damping structures of the blocked-up damping vibration-attenuation soundproof floor are organically combined with a blocked-up damping structure, structural vibration can be effectively inhibited, and the vibration noise of a carriage can be reduced. As the structure of the blocked-up layer is changed into the trapezoid blocked-up blocks, the bending rigidity of the blocked-up layer can be greatly degraded, and the damping energy consumption of the structure can be remarkably reduced.

Description

technical field [0001] The invention belongs to the field of construction, and relates to a vibration-damping floor, in particular to a vibration-damping floor of a subway car. Background technique [0002] With the development of urban transportation, the importance of the subway in daily life is becoming more and more obvious. Although the subway has made an indelible contribution to the convenience of people's travel, the noise generated by the operation of the subway vehicles has also brought great troubles to residents and passengers. The noise sources affecting the interior of subway vehicles mainly include the following types: wheel-rail noise (wheel-rail rolling noise, wheel-rail impact noise, howling sound), gearbox noise, electromagnetic noise of motor, air compressor noise, air-conditioning system noise and Pantograph electromagnetic noise, etc. On the one hand, the noise radiated by the noise source of the subway vehicle enters the car through the air through d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B7/12B32B15/20B32B15/095B32B27/40B32B27/06B32B33/00B61D17/10
CPCB32B5/18B32B7/12B32B15/095B32B15/20B32B27/06B32B27/40B32B33/00B32B2266/0278B32B2307/102B32B2307/212B32B2307/304B32B2307/3065B32B2307/54B32B2419/04B61D17/10
Inventor 黄微波梁龙强冯超鞠家辉丁国雷许圣鸣常瑞景
Owner QINGDAO SHAMU INT TRADE
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