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Rail vehicle cab floor sound insulation method, and floor structure and installation method thereof

A technology for rail vehicles and cabs, applied in the field of rail vehicles, can solve problems such as unsatisfactory effects, and achieve the effects of reducing vibration and noise, improving comfort, and reducing noise

Inactive Publication Date: 2020-09-04
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned patents all use multi-layer composite materials for vibration reduction and sound insulation, and the effect is not ideal enough.

Method used

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  • Rail vehicle cab floor sound insulation method, and floor structure and installation method thereof
  • Rail vehicle cab floor sound insulation method, and floor structure and installation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example as figure 1 As shown: the bottom plate 3 is fixed on the frame 4 by means of screws or gluing, and the bottom plate 3 can be a phenolic foam board, an aluminum honeycomb sandwich panel or a plywood. Foam board, the thickness is generally 15 ~ 20mm, and the sound insulation is > 28dB. The phenolic foam board adopts a sandwich structure, using phenolic foam and micro-layer co-extrusion material, the sound insulation performance is greatly improved, and the sound insulation coefficient is 30 ~ 50dB.

[0034] The panel of the phenolic foam board is made of glass fiber reinforced epoxy material, the glass fiber content is about 70%, and its tensile strength is >150MPa; the core material of the phenolic foam board is fiber reinforced phenolic foam, and the density is >0.2g / cm3. The fiber orientation of the core material is perpendicular to the floor plane. This special structural form makes the bending strength of the product greater than 60MPa, the flat compressive ...

Embodiment 2

[0045] Example two is as figure 2 Shown: The difference from the first embodiment is that the hanging plate 7 is fixed under the frame 4 by means of screws or gluing, and the sound absorbing material 7 is filled between the bottom plate 3 and the hanging plate 7 . The sound-absorbing material 7 is a low-density foam material, preferably melamine foam. The hanger plate 7 is made of metal material, preferably aluminum alloy material, with a thickness of 13 mm, which is used to support the sound absorbing material 7 and at the same time plays the role of blocking and reflecting the noise of the vehicle bottom.

[0046] Adopt the technical scheme experimental data of embodiment two as shown in the following table:

[0047] Floor thickness (mm) 8 10 12 16 18 Space layer thickness (mm) 10 20 30 40 50 Bottom thickness (mm) 15 16 17 18 20 Sound-absorbing material thickness (mm) 10 20 30 40 50 Cab noise (dB) 78 76 74.5 73.5 71.5 ...

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Abstract

The invention relates to a rail vehicle cab floor sound insulation method, and a floor structure and an installation method thereof. A shock absorption pad is arranged between a floor and a frame to form a separation layer, and noise conducted to a cab is reduced through the sound reflection principle. Meanwhile, the integrated floor made of the phenolic aldehyde foaming sandwich floor which is composed of the panel and the core material and is of a sandwich structure is adopted, vibration and noise of the cab floor are further reduced, the sound insulation effect is improved, compared with atraditional floor, the noise is reduced by 3dB or above, and the comfort of a cab is improved.

Description

technical field [0001] The invention relates to the field of rail vehicles, in particular to a sound insulation method for a rail vehicle cab floor, a floor structure and an installation method thereof. Background technique [0002] With the rapid development of rail vehicles, people have put forward higher requirements for the control of internal noise, heat insulation, and flame retardancy. For the cab floor, the improvement of flame retardant, environmental protection, sound insulation, moisture resistance and other properties can provide a more comfortable and safe environment for the cab, which has become a trend in the development of rail vehicle cab interiors. [0003] At present, the floor of the traditional rail vehicle adopts a plywood structure or an aluminum honeycomb sandwich structure. This kind of floor cannot well isolate the noise generated by the vibration of the bottom of the vehicle body for high-speed rail vehicles, and has poor moisture-proof performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D17/10G10K11/168G10K11/175B32B7/08B32B7/12B32B3/08B32B3/12B32B27/42B32B27/06B32B15/20B32B15/01B32B15/098B32B15/085B32B27/32
CPCB32B3/08B32B3/12B32B5/32B32B7/08B32B7/12B32B15/016B32B15/04B32B15/085B32B15/098B32B27/06B32B27/32B32B2260/021B32B2262/101B32B2266/0285B32B2307/102B32B2605/00B61D17/10G10K11/168G10K11/175
Inventor 周洲查国涛颜渊巍王明星林立钿张虎王宇鹏
Owner ZHUZHOU TIMES NEW MATERIALS TECH