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Anti-diffraction device and sound barrier
The invention discloses an anti-diffraction device and a sound barrier, and relates to the technical field of sound insulation, and the anti-diffraction device comprises a shell and a sound absorption unit. The shell comprises a first side plate, a second side plate and a top plate, wherein the first side plate and the second side plate are oppositely arranged, the top plate is connected to the top of the first side plate and the top of the second side plate, and the first side plate and the second side plate are each provided with one or more through holes. The sound absorption unit is arranged in a cavity formed among the first side plate, the second side plate and the top plate; the sound absorption unit is made of a sound absorption material, a cavity is formed in the top of the sound absorption unit, the width of the cavity is reduced towards the side away from the top plate, and the overall structure of the sound absorption unit has good sound absorption performance and can reduce low-frequency noise diffraction, has a gradually-changed structure and can reduce high-frequency noise diffraction. And the sound insulation board has a good broadband characteristic, so that the sound insulation effect is improved in a wider frequency band.
本发明公开了一种防衍射装置及声屏障，涉及隔声技术领域，防衍射装置包括外壳和吸声单元。外壳包括相对设置的第一侧板和第二侧板以及连接在所述第一侧板和所述第二侧板顶部的顶板，所述第一侧板和所述第二侧板均开设有一个或多个通孔；吸声单元设于所述第一侧板、所述第二侧板和所述顶板之间形成的空腔内；所述吸声单元采用吸声材料制成，所述吸声单元的顶部设置有腔体，所述腔体的宽度向着远离所述顶板所在侧缩小，吸声单元的整体结构既有较好的吸声性能，可以降低低频的噪声衍射，又有渐变的结构，减弱高频的噪声衍射，具有良好的宽频特征，进而在更宽频带内提高隔声效果。
Anti-diffraction device and sound barrier
The invention discloses an anti-diffraction device and a sound barrier, and relates to the technical field of sound insulation, and the anti-diffraction device comprises a shell and a sound absorption unit. The shell comprises a first side plate, a second side plate and a top plate, wherein the first side plate and the second side plate are oppositely arranged, the top plate is connected to the top of the first side plate and the top of the second side plate, and the first side plate and the second side plate are each provided with one or more through holes. The sound absorption unit is arranged in a cavity formed among the first side plate, the second side plate and the top plate; the sound absorption unit is made of a sound absorption material, a cavity is formed in the top of the sound absorption unit, the width of the cavity is reduced towards the side away from the top plate, and the overall structure of the sound absorption unit has good sound absorption performance and can reduce low-frequency noise diffraction, has a gradually-changed structure and can reduce high-frequency noise diffraction. And the sound insulation board has a good broadband characteristic, so that the sound insulation effect is improved in a wider frequency band.
本发明公开了一种防衍射装置及声屏障，涉及隔声技术领域，防衍射装置包括外壳和吸声单元。外壳包括相对设置的第一侧板和第二侧板以及连接在所述第一侧板和所述第二侧板顶部的顶板，所述第一侧板和所述第二侧板均开设有一个或多个通孔；吸声单元设于所述第一侧板、所述第二侧板和所述顶板之间形成的空腔内；所述吸声单元采用吸声材料制成，所述吸声单元的顶部设置有腔体，所述腔体的宽度向着远离所述顶板所在侧缩小，吸声单元的整体结构既有较好的吸声性能，可以降低低频的噪声衍射，又有渐变的结构，减弱高频的噪声衍射，具有良好的宽频特征，进而在更宽频带内提高隔声效果。
Anti-diffraction device and sound barrier
一种防衍射装置及声屏障
ZUO HONGYUN (author) / WANG CHEN (author) / DING WEI (author) / BI YAFENG (author)
2025-01-14
Patent
Electronic Resource
Chinese
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
| European Patent Office | 2018