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Railway vehicle noise reduction floor

A technology for rail vehicles and floors, used in railway car bodies, railway car body parts, instruments, etc., can solve the problems of poor sound insulation and sound absorption performance, improve sound insulation and sound absorption performance, meet the requirements of noise reduction, The effect of improving ride comfort

Active Publication Date: 2022-01-21
ZHUZHOU NAT INNOVATION RAILWAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of poor sound insulation and sound absorption performance of the rail vehicle interior floor in the prior art, and provide a compact structure, simple manufacture, high mechanical strength and excellent sound insulation and sound absorption performance. Noise reduction floor for rail vehicles

Method used

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  • Railway vehicle noise reduction floor
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Examples

Experimental program
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Embodiment 1

[0025] Such as Figure 1 to Figure 3 As shown, the rail vehicle noise reduction floor of the present invention includes: an upper panel 1, a lower panel 2 and a corrugated board 3, the upper panel 1 and the corrugated board 3 are provided with micro-holes, and the height of the corrugated board 3 is 20 mm to 40 mm. The upper panel 1, the corrugated plate 3 and the lower panel 2 are fixedly connected sequentially from top to bottom, the upper panel 1 is connected with the corrugated plate 3 to form a plurality of wave valley cavities 7, and the lower panel 2 is connected with the corrugated plate 3 to form a plurality of wave crest cavities 9 . The valley cavity 7 is filled with a first sound-absorbing material 4, and the peak cavity 9 is filled with a second sound-absorbing material 5. The first sound-absorbing material 4 and the second sound-absorbing material 5 have different acoustic impedance characteristics respectively, but Porous sound-absorbing materials can be used t...

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Abstract

The invention discloses a railway vehicle noise reduction floor which comprises an upper panel, a lower panel and a corrugated plate, and micropores are formed in the upper panel and the corrugated plate; the upper panel, the corrugated plate and the lower panel are sequentially and fixedly connected from top to bottom, the upper panel and the corrugated plate are connected to form a plurality of wave trough cavities, the lower panel and the corrugated plate are connected to form a plurality of wave crest cavities, and the wave trough cavities and the wave crest cavities are filled with sound absorption materials with different acoustic impedance characteristics respectively and used for absorbing or isolating high-frequency noise. The railway vehicle noise reduction floor has the advantages of compact structure, simplicity in manufacturing, high mechanical strength, excellent sound insulation and sound absorption performance and the like.

Description

technical field [0001] The invention belongs to the technical field of noise reduction for rail train bodies, and in particular relates to a noise reduction floor for rail vehicles. Background technique [0002] Nowadays, as the speed of high-speed trains continues to increase, the problem of train noise is becoming more and more serious. It not only affects people's riding comfort, but high-intensity noise can also bring irritability and fatigue to passengers' bodies. Noise can even cause damage to human hearing. At the same time, long-term noise poses a great threat to the health of train drivers and passengers. It makes the train crew fatigue quickly and even affects the normal work of the train. Therefore, controlling the noise inside the high-speed train has become an urgent problem to be solved. [0003] At present, in order to reduce the weight of the car body structure, the main measure is to replace the interior floor with corrugated boards, which consist of upper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D17/10G10K11/162G10K11/172
CPCB61D17/10G10K11/172G10K11/162Y02T30/00
Inventor 王达任魁山王雅楠吴生提李林李小满黄志华肖黎亚张晶福
Owner ZHUZHOU NAT INNOVATION RAILWAY TECH CO LTD
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