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Environment-friendly sound insulating high speed train floor structure

A technology for high-speed trains and floors, which is applied to railway car bodies, parts of railway car bodies, transportation and packaging, etc. It can solve the problems of insignificant sound insulation effect of surface wood boards, inability to make full use of space resources, and inability to achieve vibration reduction effects, etc. , to improve the effect of sound insulation, reduce the transmission coefficient and improve the ride comfort

Inactive Publication Date: 2014-09-24
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Chinese patent No. ZL201220016209.3 discloses a high sound insulation floor structure, which improves the sound insulation performance of the floor and reduces the noise of the train, but the floor structure has the following disadvantages: the inner cavity of the floor aluminum profile One cavity is filled with polyurethane, and the other cavity does not have any filling material, so that the existing space resources cannot be fully utilized, and the sound insulation can be maximized; in this floor structure, the gap between the sound insulation pad and the floor aluminum profile Bonding with wooden beams, the structural rigidity of the wooden beams is too large, which cannot play a good damping effect; the sound insulation effect of the surface wooden boards in the floor structure is not significant, it is easy to be deformed by moisture, and it is prone to safety hazards

Method used

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  • Environment-friendly sound insulating high speed train floor structure
  • Environment-friendly sound insulating high speed train floor structure
  • Environment-friendly sound insulating high speed train floor structure

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the novel environment-friendly sound insulation and vibration reduction high-speed train floor structure of the present invention, its floor aluminum profile 1 web upper surface sprays free viscoelastic damping material 2 (for example: Changzhou Lanjin ZN03); Each cavity is filled with polyurethane sound-absorbing material 3; floor aluminum profile 1 top plate and lower support 12 are bonded with viscoelastic damping material 4 (for example: Changzhou Lanjin ZN03); viscoelastic damping material 4 is bonded with constraining layer aluminum plate 5 ; The lower support 12 is bonded to the top of the floor aluminum profile 1; the lower support 12 and the upper support 13 are connected with a rubber pad or a damping pad 11, which reduces the connection stiffness and plays the role of buffering and vibration reduction, and also red...

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Abstract

The invention discloses an environment-friendly sound insulating high speed train floor structure, and relates to the field of railway vehicle floors. A free sticking elastic damping material is sprayed on the upper surface of a web plate of a floor aluminum profile; the inner chamber of the floor aluminum profile is filled with a polyurethane sound absorption material; the upper surface of a top plate of the aluminum profile and lower supports are bonded with the sticking elastic damping material; the upper part of the sticking elastic damping material is bonded with a restraint layer aluminium plate; the upper part of the floor aluminum profile is bonded with the lower supports; the lower supports and upper supports are connected through rubber cushions; a cold-proof material is laid between the restraint layer aluminium plate and a sound insulation cushion; the sound insulation cushion and an aluminium plate form an entirety, and then the entirety is bonded with the elastic supports; the upper part of the aluminium plate is bonded with foaming aluminium; the upper part of the foaming aluminium is bonded with the aluminium plate. According to the invention, through the improvement of the structure of the floor, the integral rigidity of the system is reduced, and the sound insulation amount is improved, through the simulation of the test result, the thickness of the plate is specified, the vibration damping noise reducing performance can be optimized, and meanwhile the development requirement of light weight of the vehicle body can be met; on the aspect of vehicle body floor material selection, the novel environment-friendly energy-saving material is preferentially selected.

Description

technical field [0001] The invention relates to the field of rail car floor structure design, in particular to an environment-friendly and sound-insulating high-speed train floor structure. Background technique [0002] In-car noise has become an urgent problem to be solved for the continuous and stable development of high-speed trains. The floor air sound transmission is the main source of noise in the car. Improving the sound insulation performance of the car body floor is of great significance to improving the sound field environment in the car, and it also provides reference and basis for the low-noise design of high-speed trains. [0003] The Chinese patent No. ZL201220016209.3 discloses a high sound insulation floor structure, which improves the sound insulation performance of the floor and reduces the noise of the train, but the floor structure has the following disadvantages: the inner cavity of the floor aluminum profile One cavity is filled with polyurethane, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D17/10
Inventor 王金田孙强马梦林高阳金学松肖新标
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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