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Noise reduction unit and construction vehicle

A noise reduction unit and engineering vehicle technology, applied in the field of noise reduction, can solve the problems of unsuitable use of engineering vehicles and easy failure, etc., and achieve a good noise reduction effect

Active Publication Date: 2019-09-24
JIANGSU XCMG STATE KEY LAB TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the sound-absorbing layer or sound-absorbing unit installed on the inner wall very easy to fail when the environment is harsh. Therefore, these existing noise reduction solutions are not suitable for engineering vehicles

Method used

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  • Noise reduction unit and construction vehicle
  • Noise reduction unit and construction vehicle
  • Noise reduction unit and construction vehicle

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Experimental program
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Embodiment Construction

[0033] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0034] Such as figure 1 Shown is a schematic cross-sectional structure diagram of an embodiment of the noise reduction unit of the present invention. In this embodiment, the noise reduction unit 8 includes: a sound absorption layer 3 and a noise reduction unit body, and a sound absorption and noise reduction area is formed on the wall surface 10 of the noise reduction unit body, and the sound absorption layer 3 is arranged in the noise reduction unit body to correspond to At the position of the sound-absorbing and noise-absorbing area, the sound-absorbing and noise-absorbing area is provided with a plurality of sound-absorbing pores 4 , and a gap layer 6 is provided between the sound-absorbing and noise-absorbing area and the sound-absorbing layer 3 .

[0035] In this embodiment, a sound-absorbing layer is provided in...

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PUM

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Abstract

The invention relates to a silencing unit and an engineering vehicle. The silencing unit comprises a sound absorbing layer (3) and a silencing unit main body; a sound absorbing silencing area is formed in a wall surface (10) of the silencing unit main body, the sound absorbing layer (3) is arranged at the position, corresponding to the sound absorbing silencing area, in the silencing unit main body, multiple silencing micropores (4) are formed in the sound absorbing silencing area, and a gap layer (6) is arranged between the sound absorbing silencing area and the sound absorbing layer (3). According to the silencing unit, the sound absorbing layer is arranged in the silencing unit, multiple silencing micropores are formed in the portions, corresponding to the sound absorbing silencing area, of the sound absorbing layer, and then the gap layer is arranged between the sound absorbing silencing area and the sound absorbing layer. Accordingly, a good silencing effect is achieved by applying multiple silencing modes including micropore resonance, gap silencing and sound absorbing simultaneously through the sound absorbing layer through the structural design.

Description

technical field [0001] The invention relates to the technical field of noise reduction, in particular to a noise reduction unit and an engineering vehicle. Background technique [0002] With the progress of modern society, for the serious noise pollution produced by engineering vehicles widely used in various constructions, countries have formulated and promulgated laws and regulations to carry out environmental protection and pollution control, especially setting noise limits for construction machinery products value to avoid adverse effects of noise on personnel and the environment. [0003] Taking the road sweeper as an example, it widely serves cities and highways due to its high cleaning efficiency and diversified functions. When the road sweeper is working, the noise of the fan will enter the air duct, connecting pipes, suction nozzles, etc. in turn, and it is very easy to leak in the above parts or connections. If it is not treated, it will cause noise pollution to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/08G10K11/16
Inventor 倪翔宇夏光亮王振清
Owner JIANGSU XCMG STATE KEY LAB TECH CO LTD