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JP3697103B2 - Ceramic sound absorber panel structure - Google Patents
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JP3697103B2 - Ceramic sound absorber panel structure - Google Patents

Ceramic sound absorber panel structure Download PDF

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Publication number
JP3697103B2
JP3697103B2 JP08573799A JP8573799A JP3697103B2 JP 3697103 B2 JP3697103 B2 JP 3697103B2 JP 08573799 A JP08573799 A JP 08573799A JP 8573799 A JP8573799 A JP 8573799A JP 3697103 B2 JP3697103 B2 JP 3697103B2
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Japan
Prior art keywords
sound
absorbing plate
ceramic
ceramic sound
panel
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JP08573799A
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JP2000282596A (en
Inventor
光 本村
和洋 長谷崎
巧 時吉
四郎 関
精三 柴田
武人 薮
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、防音を必要とする自動車道の遮音板、トンネル内部の壁面、劇場の壁面等に用いられるセラミックス吸音板パネルの構造に関する。
【0002】
【従来の技術】
高速自動車道の遮音板、トンネル内部の壁面、劇場の壁面等においては、吸音材としてセラミックス板パネルが多く使用されている。
かかるセラミックス吸音板パネルとしては、従来、セラミックス材からなる吸音板の片面にアルミニウムの金網を貼着して、形鋼からなる枠体で周囲を固持する構造となっている。
【0003】
図4はかかるセラミックス吸音板パネルの斜視図であり、図において、2,2はセラミックス材からなるセラミックス吸音板で、この例では2枚連設されている。
1は、該セラミックス吸音板2の外周に嵌合されて該吸音板2を支持する枠で、形鋼からなる。3は、前記2枚のセラミックス吸音板2,2の間に設けられて、両吸音板2,2を連結する継手であり、これらによってセラミックス吸音板パネル50を構成する。
4は該セラミックス吸音板パネル50をパネル取付部材(図10参照)に支持する支持部である。
【0004】
図9は、前記セラミックス吸音板パネルの従来技術の1例を示す図4のA−A線に沿う断面図である。
図9において、01は枠で、垂直なベース部1aの両端にアーム部1bが直角方向に結合されたコの字状断面の溝形鋼からなり、該枠01のアーム部1bの間に前記セラミックス吸音板2の外周端部を挿み込むことにより、該吸音板2を支持している。
【0005】
図10は前記セラミックス吸音板パネルのパネル取付部材への取付構造の従来技術の1例を示す要部斜視図(図2のC矢視図)である。
図10において、4はL字状断面の形鋼からなる支持部で、該支持部4はその垂直部の上下端部を前記枠01にすみ肉溶接7によって固着されている。
一方、該支持部4の水平部は、これとパネル取付部材5とに挿通されるボルト6a及びナット6bによって該パネル取付部材5に締着されている。
【0006】
【発明が解決しようとする課題】
しかしながら、前記従来技術に係るセラミックス吸音パネル及びその取付構造は、次のような問題点を有している。
【0007】
即ち、図9に示すように、セラミックス吸音板2は、その外周端部をコの字状断面の溝形鋼に挿み込むことによって支持されているが、該吸音板2の板面に垂直方向の荷重に対して、該吸音板2の端部を支持している枠01のアーム部1bの剛性が小さいため、吸音板2が該枠01による支持部近傍における撓みが過大となり、割れが発生しやすくなる。
【0008】
また、かかる従来技術にあっては、図10に示すように、枠01の背部に支持部4の端部をすみ肉溶接7により固着しているため、該吸音板パネル50を該支持部4を介してパネル取付部材5に取付けた際の剛性が小さく、特に衝撃荷重に対して、該すみ肉溶接部を起点として破損が発生しやすい。
【0009】
さらにセラミックス吸音板2は、その片面をアルミニウム製の金網で覆っているのみであるため、飛来物等による衝撃が加わると割れを生じて破片が飛散するという不具合の発生をみる。
【0010】
本発明はかかる従来技術の課題に鑑み、枠体の剛性を増大してセラミックス吸音板の挿み込みによる支持を堅固になし、該吸音板の撓みを抑制し、これにより引き起こされる割れの発生を防止するとともに、セラミックス吸音材パネルの取付部の剛性を増大して枠体の破損を防止し、さらにはセラミックス吸音板の衝撃による破損を防止することにより、耐久性、信頼性が向上されたセラミックス吸音材パネルの取付構造を提供することを目的とする。
【0011】
【課題を解決するための手段】
本発明は、かかる課題を解決するため、請求項1記載の発明として、セラミックス材からなるセラミックス吸音板の周囲を鋼材からなる枠体で支持してなるセラミックス吸音板パネルにおいて、前記セラミックス吸音板を複数個設けて継手部材により連結し、該継手部材は垂直なベース部の両端にアーム部を互いに逆方向に結合してなるZ形鋼からなり、該Z形鋼のベース部を前記セラミックス吸音板の端面間に挿み込むことにより該吸音板を連結し、
前記枠体は、コの字状断面を有する溝形鋼の一側アーム部の端部から前記吸音板側へ向けて突設されたリップ部が形成されたリップ付き溝形鋼からなり、前記吸音板を前記リップ先端と、該リップ部と対向する他側アーム部の吸音板支持面とにより前記吸音板を狭持させて支持することを特徴とするセラミックス吸音板パネル構造を提案する。
【0012】
かかる発明によれば、枠体を、コの字状断面を有する溝形鋼のアーム部の端部からリップ部をセラミックス吸音板側へ向けて突設したリップ付き溝形鋼で構成したので、該枠体が箱体に近い形状となってその曲げ剛性及びねじり剛性がコの字状の溝形鋼に比べて大幅に増大する。これによって、該枠体で支持しているセラミックス吸音板の端部に作用する衝撃的な荷重を含む荷重に対して高い強度で以って堅牢に支持することができ、前記荷重による該吸音板の過大撓みや割れの発生が抑制され、吸音板の耐久性が向上する。
また、かかる発明によれば、複数のセラミックス吸音板をZ形鋼からなる継手部材によって連結しているので、継手部が柔構造となって、該継手部材にて連結されるセラミックス吸音板の拘束力が小さくなって、該拘束力による破損が防止される。また、簡単な形状のZ形鋼で継手部を構成したので、該継手部の重量が低減される。
【0013】
【0014】
【0015】
請求項2記載の発明は、前記枠体にその長手方向に沿って支持部材をスポット溶接により固着し、該支持部材をボルト等の締結部材により着脱可能にパネル取付部材に取付けてなることを特徴とするセラミックス吸音板パネル構造にある。
【0016】
かかる発明によれば、枠体の背面に支持部の板面をスポット溶接して、両者を固着するので、該枠体の背面と支持部とが双方の板面にて溶着されることとなり、従来技術のように端縁部のみをすみ肉溶接するものに比べて、枠体と支持部との溶接部の強度が向上する。
【0017】
請求項3記載の発明は、前記セラミックス吸音板は、両面に金網を固着して、該金網を介して前記吸音板を前記リップ先端と、該リップ部と対向する他側アーム部の吸音板支持面とにより前記吸音板を狭持させて支持することを特徴とする。該金網にはアルミニウム線を用いるのが好適である。
【0018】
かかる発明によれば、セラミックス吸音板の上下両面にアルミニウム線等からなる金網を貼着したので、セラミックス吸音板の曲げ強度が向上するとともに、またセラミックス層の振動、衝撃等に対する強度が向上し、セラミックス層の剥離や脱落、飛散の発生を防止できる。
【0019】
【0020】
【発明の実施の形態】
以下、本発明を図に示した実施例を用いて詳細に説明する。但し、この実施例に記載される構成部品の寸法、材質、形状、その相対配置などは特に特定的な記載が無い限り、この発明の範囲をそれのみに限定する趣旨ではなく単なる説明例に過ぎない。
【0021】
図4は本発明が適用されるセラミックス吸音板パネルの斜視図であり、図において、2,2はセラミックス材からなるセラミックス吸音板で、この例では2枚連されている。
1は該セラミックス吸音板2の外周に嵌合されて該吸音板2を支持する枠で、後述するような形鋼からなる。3は前記2枚のセラミックス吸音板2,2の間に設けられて両吸音板2,2を連結する継手であり、これらによってセラミックス吸音板パネル50を構成する。
4は該セラミックス吸音板パネル50をパネル取付部材(図3参照)に支持する支持部である。
【0022】
図1〜図3は本発明の第1実施形態を示し、図1は図4のA−A線に沿う断面図、図2は図4のB−B線に沿う断面図、図3は図2のC部拡大図である。
【0023】
図1において、2はセラミックス吸音板、1は該セラミックス吸音板2の外周を支持する枠である。該枠1は、ベース部1aとこれの両端から直角方向に結合されたアーム部1b,1bとがコの字状断面に形成された溝形鋼の上側のアーム部1bの端部から前記吸音板2の板面方向にリップ部1cが突設されて構成される。
従って、前記セラミックス吸音板2は、その端部、上面を枠1のリップ部1cの端面に、下面を下側のアーム部1bの上面に挟持されることにより、該枠1に支持される。
【0024】
かかる構成によれば、セラミックス吸音板2の外周を支持する枠1を、コの字状断面の溝形鋼のアーム部1bの端部にリップ部1cを突設してなるリップ部付き溝形鋼で形成したので、箱形に近い断面形状となって、その曲げ剛性が図9に示す従来技術に係るコの字状断面の溝形鋼に比べて大幅に増大する。
【0025】
これにより、前記枠1によって支持されているセラミックス吸音板2の端部に作用する曲げ荷重や衝撃的な荷重を含む垂直荷重に対し、高い支持剛性で以って支持することができる。したがって、前記荷重によるセラミックス吸音板2の撓みが低減されて過大撓みによる該吸音板2の割れの発生が抑制される。
【0026】
図2は、複数のセラミックス吸音板2,2の結合部を示しており、図2において3は前記セラミックス吸音板2,2を結合する継手である。該継手3は、垂直なベース部3aの上端及び下端に互いに逆方向にアーム部3bが結合されたZ形断面のZ形鋼からなり、該継手3のベース部3aに前記吸音板2,2の端面が突き合わせられ、上側のアーム部3bの下面で一方側の吸音板2の上面を押さえ、下側のアーム部3bの上面で他方側の吸音板2の下面を押さえるようになっている。
【0027】
かかる構成によれば、複数のセラミックス吸音板2,2をZ形鋼からなる継手3を介して連結しているので、継手部が柔構造となり、連結による拘束力が低減される。
これにより、稼動時に複数のセラミックス吸音板2,2間の拘束力がZ形鋼からなる継手部において緩和され、かかる拘束力による吸音板2の応力が低減され、該応力による吸音板2の割れの発生が防止される。
また、前記Z形鋼は軽量かつ簡単な構造であるので、継手部の重量が低減される。
【0028】
図3は、前記のように構成されたセラミックス吸音板パネル50をパネル取付部材5への取付構造を示し、図3において、1は前記リップ部1c付き溝形鋼からなる枠、5はパネル取付部材で、該枠1はL字状断面の支持部4を介して前記パネル取付部材5に取付けられている。
前記支持部4の垂直部4aと枠1のベース部1aとは複数箇所にてスポット溶接8によって固着されている。
また、該支持部4の水平部4bは前記パネル取付部材5の端部に重ね合わせられている。そして、該重ね合わせ部をボルト6a、ナット6bによって締付けることにより、支持部4とパネル取付部材5とを固定している。
【0029】
かかる構成によれば、枠1のベース部1a及び支持部4の垂直部4aの重ね合わせ部の複数箇所にスポット溶接8を施して、該重ね合わせ部を板面にて溶着されるので、図10に示すような端縁部のみをすみ肉溶接する従来技術に比べて、枠1と支持部4との結合部の強度が向上する。
【0030】
「実験例」
図7は、図1〜図3に示す本発明の実施品であるセラミックス吸音板パネルと、図9〜図10に示す従来品のセラミックス吸音板とについて、荷重試験を行なった結果を示している。
図7において(A)が図9〜図10に示す従来技術に係るセラミックス吸音板パネル構造の実験値、(B)が図1〜図3に示す本発明の実施形態に係るセラミックス吸音板パネル構造の実験値である。
【0031】
図7のケース(1)に示すように、吸音板パネル支持部をすみ肉溶接とした場合、図9に示す従来技術の枠01を用いたものが最大荷重180kgfで破断したのに対し、図1に示す本発明の枠1を用いたものは305kgfまで、約1.6倍破断強さが上昇した。
【0032】
また、図7のケース(1)に示している枠01と支持部4とをすみ肉溶接によって固着した従来技術のもの(図10のもの)においては、最大荷重180kgで溶接部が破断したのに対し、ケース(2)の(B)に示している枠1と支持部4とをスポット溶接で固着した本発明のもの(図3のもの)は、最大荷重380kgで溶接部の破断が無く、前記従来のものの2倍以上の強度を示した。
【0033】
図5〜図6は、本発明の第2実施形態に係るセラミックス吸音板を示し、図5は該吸音板の外観斜視図、図6は図5のD−D線に沿う断面図である。この実施形態においては、セラミックス吸音板2は、図6に示すように、セラミックス層10の上面及び下面の両面にアルミニウム細線を網状にした金網9,9を貼着している。
【0034】
かかる実施形態によれば、セラミックス層10の上下両面に金網9,9を貼着しているので、振動、衝撃等に対する強度が向上し、これらの荷重によってセラミックス層10が脱落、飛散するのが回避できる。
また、セラミックス層10の上下両面に金網9を貼着したので、片面のみに金網を貼着した従来技術のセラミックス吸音板に比べて曲げ強度が増大し、曲げ荷重に対する耐久性も向上する。
【0035】
「実験例」
図8は、セラミックス層10の片面にアルミニウム製の金網9を貼着した従来品(A)と、セラミックス層10の上下両面にアルミニウム製の金網9,9を貼着した本発明品(B)(図5〜図6に示すもの)との曲げ荷重試験結果を示している。
図8に明らかなように、従来品(A)の曲げ強度は120kgf/cm2であるのに対し、本発明品(B)は150kgf/cm2と曲げ強度が大幅に上昇した。
【0036】
【発明の効果】
以上記載のごとく、本発明によれば、リップ付き溝形鋼からなる枠体を設けたので、従来技術に比べて該枠体の曲げ剛性及び捩り剛性が増大して、セラミックス吸音板の支持剛性が上昇し、該吸音板の撓みを低減することができ、これによって該吸音板の割れの発生を防止して耐久性を向上することができる。
また、複数のセラミックス吸音板の継手部にZ形鋼を用いることによって、該継手部が柔構造となり、拘束力が低減され、該拘束による吸音板の割れの発生を防止できる。
さらに、軽量のZ形鋼で継手部を構成したので、該継手部の重量が低減されるとともに、構造も簡単化される。
【0037】
【0038】
また、本発明によれば、スポット溶接によって枠体と支持体との板面同士を部分的に溶着するので、端部のみを溶接する従来のすみ肉溶接品に比べて、溶接部の強度が向上し、セラミックス吸音板パネルの支持構造の強度が向上する。
【0039】
また、本発明によれば、セラミックス層の上下両面に金網を貼着したことにより、曲げ強度が向上するとともに、振動、衝撃等によるセラミックス層の脱落や飛散の発生を防止できる。
【0040】
【0041】
以上要するに、本発明によれば、セラミックス吸音板及びこれの支持構造部の耐久性が向上することによって、該セラミックス吸音板パネルを長尺化することが可能となり、製造コストの低減も実現できる。
【図面の簡単な説明】
【図1】 本発明の第1実施形態に係るセラミックス吸音材パネルの要部を示す断面図(図4のA−A線図)である。
【図2】 上記セラミックス吸音材パネルの継手部近傍を示す断面図(図4のB−B線図)である。
【図3】 図2のC部拡大図である。
【図4】 本発明が適用されるセラミックス吸音材パネルの全体斜視図である。
【図5】 本発明の第2実施形態に係るセラミックス吸音材パネルの外観斜視図である。
【図6】 図5のD−D線断面図である。
【図7】 本発明に係るセラミックス吸音材パネルの荷重試験結果を示す表図である。
【図8】 本発明に係るセラミックス吸音材の曲げ試験結果を示す表図である。
【図9】 従来技術に係るセラミックス吸音材パネルを示す図1対応図である。
【図10】 従来技術に係るセラミックス吸音材パネルを示す図3対応図である。
【符号の説明】
1 枠
1a ベース部
1b アーム部
1c リップ部
2 セラミックス吸音板
3 継手
3a ベース部
3b アーム部
4 支持部
5 パネル取付部材
6a ボルト
6b ナット
7 すみ肉溶接
8 スポット溶接
9 金網
10 セラミックス層
50 セラミックス吸音板パネル
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a ceramic sound-absorbing plate panel used for a sound insulation board of an automobile road that requires soundproofing, a wall surface inside a tunnel, a wall surface of a theater, and the like.
[0002]
[Prior art]
Ceramic plate panels are often used as sound-absorbing materials on high-speed motorway sound insulation boards, tunnel walls, theater walls, and the like.
Conventionally, such a ceramic sound-absorbing plate panel has a structure in which an aluminum wire mesh is attached to one side of a sound-absorbing plate made of a ceramic material, and the periphery is fixed by a frame made of a shape steel.
[0003]
FIG. 4 is a perspective view of such a ceramic sound-absorbing plate panel. In the figure, reference numerals 2 and 2 denote ceramic sound-absorbing plates made of a ceramic material, and two in this example are connected in series.
Reference numeral 1 denotes a frame which is fitted to the outer periphery of the ceramic sound absorbing plate 2 and supports the sound absorbing plate 2 and is made of a shape steel. Reference numeral 3 denotes a joint that is provided between the two ceramic sound absorbing plates 2 and 2 and connects the two sound absorbing plates 2 and 2, and constitutes a ceramic sound absorbing plate panel 50.
Reference numeral 4 denotes a support portion for supporting the ceramic sound absorbing plate panel 50 on a panel mounting member (see FIG. 10).
[0004]
FIG. 9 is a cross-sectional view taken along the line AA in FIG. 4 showing an example of the prior art of the ceramic sound absorbing plate panel.
In FIG. 9, reference numeral 01 denotes a frame, which is made of a groove-shaped steel having a U-shaped cross section in which arm portions 1 b are coupled at right angles to both ends of a vertical base portion 1 a, and between the arm portions 1 b of the frame 01, The sound absorbing plate 2 is supported by inserting the outer peripheral end of the ceramic sound absorbing plate 2.
[0005]
FIG. 10 is a perspective view of the main part showing an example of the prior art of the structure for mounting the ceramic sound absorbing plate panel to the panel mounting member (as viewed from arrow C in FIG. 2).
In FIG. 10, reference numeral 4 denotes a support portion made of steel having an L-shaped cross section, and the support portion 4 is fixed to the frame 01 by fillet welding 7 at the upper and lower ends of the vertical portion.
On the other hand, the horizontal portion of the support portion 4 is fastened to the panel mounting member 5 by bolts 6a and nuts 6b inserted through the support portion 4 and the panel mounting member 5.
[0006]
[Problems to be solved by the invention]
However, the ceramic sound-absorbing panel and its mounting structure according to the prior art have the following problems.
[0007]
That is, as shown in FIG. 9, the ceramic sound-absorbing plate 2 is supported by inserting the outer peripheral end of the ceramic sound-absorbing plate 2 into a grooved steel having a U-shaped cross section, but perpendicular to the plate surface of the sound-absorbing plate 2. Since the rigidity of the arm portion 1b of the frame 01 supporting the end portion of the sound absorbing plate 2 is small with respect to the load in the direction, the sound absorbing plate 2 is excessively bent in the vicinity of the supporting portion by the frame 01, and cracking occurs. It tends to occur.
[0008]
Moreover, in this prior art, as shown in FIG. 10, since the end portion of the support portion 4 is fixed to the back portion of the frame 01 by the fillet weld 7, the sound absorbing plate panel 50 is attached to the support portion 4 as shown in FIG. The rigidity when attached to the panel attachment member 5 is small, and damage is likely to occur starting from the fillet welded part, particularly with respect to impact load.
[0009]
Furthermore, since the ceramic sound-absorbing plate 2 is only covered on one side with an aluminum wire mesh, there appears to be a problem in that when an impact from a flying object or the like is applied, cracks occur and fragments are scattered.
[0010]
In view of the problems of the prior art, the present invention increases the rigidity of the frame to firmly support the insertion of the ceramic sound absorbing plate, suppresses the bending of the sound absorbing plate, and causes the occurrence of cracks caused thereby. Ceramics with improved durability and reliability by preventing the damage of the frame by increasing the rigidity of the mounting part of the ceramic sound-absorbing material panel, and also preventing the damage by the impact of the ceramic sound-absorbing plate An object of the present invention is to provide a sound absorbing material panel mounting structure.
[0011]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides a ceramic sound absorbing plate panel in which the periphery of a ceramic sound absorbing plate made of a ceramic material is supported by a frame made of a steel material. A plurality of joint members are connected by a joint member, and the joint member is made of a Z-shaped steel in which arm portions are coupled to opposite ends of a vertical base portion, and the base portion of the Z-shaped steel is connected to the ceramic sound absorbing plate. The sound absorbing plate is connected by inserting between the end faces of
The frame body is Ri Do from U-shaped cross section lipped groove-shaped steel lip which projects towards the end of one side arm of the channel steel to the sound absorbing plate side is formed to have a, A ceramic sound-absorbing plate panel structure is proposed in which the sound-absorbing plate is supported by the sound-absorbing plate sandwiched between the tip of the lip and the sound-absorbing plate-supporting surface of the other arm facing the lip .
[0012]
According to this invention, the frame body is constituted by the grooved steel with a lip projecting from the end of the arm part of the grooved steel having a U-shaped cross section toward the ceramic sound absorbing plate side. The frame body has a shape close to that of a box body, and its bending rigidity and torsional rigidity are significantly increased as compared with a U-shaped groove steel. Thus, the sound absorbing plate can be firmly supported with high strength against a load including an impact load acting on the end portion of the ceramic sound absorbing plate supported by the frame body. The occurrence of excessive bending and cracking is suppressed, and the durability of the sound absorbing plate is improved.
According to this invention, since the plurality of ceramic sound absorbing plates are connected by the joint member made of Z-shaped steel, the joint portion has a flexible structure, and the ceramic sound absorbing plate connected by the joint member is restrained. The force is reduced and damage due to the restraining force is prevented. In addition, since the joint portion is formed of a simple Z-shaped steel, the weight of the joint portion is reduced.
[0013]
[0014]
[0015]
The invention according to claim 2 is characterized in that a support member is fixed to the frame body along the longitudinal direction by spot welding, and the support member is detachably attached to a panel attachment member by a fastening member such as a bolt. The ceramic sound-absorbing plate panel structure.
[0016]
According to this invention, the plate surface of the support portion is spot welded to the back surface of the frame body, and both are fixed, so the back surface of the frame body and the support portion are welded on both plate surfaces, The strength of the welded part between the frame body and the support part is improved as compared with the conventional technique in which only the edge part is fillet welded.
[0017]
According to a third aspect of the present invention, the ceramic sound-absorbing plate has a metal mesh fixed on both sides thereof, and the sound-absorbing plate is supported by a sound-absorbing plate on the tip of the lip and the other arm portion facing the lip portion via the metal mesh. The sound absorbing plate is supported by being sandwiched by a surface. It is preferable to use an aluminum wire for the wire mesh.
[0018]
According to this invention, since the metal mesh made of aluminum wire or the like is attached to the upper and lower surfaces of the ceramic sound absorbing plate, the bending strength of the ceramic sound absorbing plate is improved, and the strength of the ceramic layer against vibration, impact, etc. is improved. It is possible to prevent the ceramic layer from peeling off, falling off, or scattering.
[0019]
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention unless otherwise specified. Absent.
[0021]
FIG. 4 is a perspective view of a ceramic sound-absorbing plate panel to which the present invention is applied. In FIG. 4, reference numerals 2 and 2 denote ceramic sound-absorbing plates made of a ceramic material.
Reference numeral 1 denotes a frame which is fitted to the outer periphery of the ceramic sound absorbing plate 2 and supports the sound absorbing plate 2 and is made of a shape steel as described later. 3 is a joint provided between the two ceramic sound-absorbing plates 2 and 2 to connect the two sound-absorbing plates 2 and 2, and constitutes a ceramic sound-absorbing plate panel 50.
Reference numeral 4 denotes a support portion for supporting the ceramic sound absorbing plate panel 50 on a panel mounting member (see FIG. 3).
[0022]
1 to 3 show a first embodiment of the present invention. FIG. 1 is a sectional view taken along line AA in FIG. 4, FIG. 2 is a sectional view taken along line BB in FIG. FIG.
[0023]
In FIG. 1, reference numeral 2 denotes a ceramic sound absorbing plate, and 1 denotes a frame that supports the outer periphery of the ceramic sound absorbing plate 2. The frame 1 includes the base portion 1a and the arm portions 1b and 1b coupled in the direction perpendicular to both ends thereof from the end portion of the upper arm portion 1b of the grooved steel formed in a U-shaped cross section. A lip portion 1c is provided so as to project in the plate surface direction of the plate 2.
Therefore, the ceramic sound-absorbing plate 2 is supported by the frame 1 by sandwiching its end and upper surface with the end surface of the lip 1c of the frame 1 and the lower surface with the upper surface of the lower arm 1b.
[0024]
According to this configuration, the frame 1 supporting the outer periphery of the ceramic sound-absorbing plate 2 is provided with a lip portion groove shape in which the lip portion 1c is projected from the end portion of the arm portion 1b of the U-shaped cross-section steel. Since it is formed of steel, it has a cross-sectional shape close to a box shape, and its bending rigidity is greatly increased as compared with the U-shaped cross-section grooved steel shown in FIG.
[0025]
Thereby, it can support with high support rigidity with respect to the vertical load containing the bending load and impact load which act on the edge part of the ceramic sound-absorbing board 2 supported by the said frame 1. FIG. Therefore, the bending of the ceramic sound absorbing plate 2 due to the load is reduced, and the occurrence of cracking of the sound absorbing plate 2 due to excessive bending is suppressed.
[0026]
FIG. 2 shows a connecting portion of a plurality of ceramic sound absorbing plates 2 and 2. In FIG. 2, reference numeral 3 denotes a joint for connecting the ceramic sound absorbing plates 2 and 2. The joint 3 is made of Z-shaped steel having a Z-shaped cross section in which arm portions 3b are coupled in opposite directions to the upper end and lower end of a vertical base portion 3a, and the sound absorbing plates 2, 2 are attached to the base portion 3a of the joint 3. The upper surface of the sound absorbing plate 2 on one side is pressed by the lower surface of the upper arm portion 3b, and the lower surface of the sound absorbing plate 2 on the other side is pressed by the upper surface of the lower arm portion 3b.
[0027]
According to such a configuration, since the plurality of ceramic sound absorbing plates 2 and 2 are connected via the joint 3 made of Z-shaped steel, the joint portion has a flexible structure, and the binding force due to the connection is reduced.
As a result, the restraining force between the plurality of ceramic sound-absorbing plates 2 and 2 during operation is relaxed in the joint portion made of Z-shaped steel, the stress of the sound-absorbing plate 2 due to the restraining force is reduced, and the sound-absorbing plate 2 is cracked by the stress. Is prevented from occurring.
Further, since the Z-shaped steel has a light and simple structure, the weight of the joint portion is reduced.
[0028]
FIG. 3 shows a structure for mounting the ceramic sound absorbing plate panel 50 constructed as described above to the panel mounting member 5. In FIG. 3, 1 is a frame made of channel steel with the lip 1c, and 5 is a panel mounting. As a member, the frame 1 is attached to the panel attachment member 5 via a support portion 4 having an L-shaped cross section.
The vertical portion 4a of the support portion 4 and the base portion 1a of the frame 1 are fixed by spot welding 8 at a plurality of locations.
Further, the horizontal portion 4 b of the support portion 4 is overlapped with the end portion of the panel mounting member 5. And the support part 4 and the panel attachment member 5 are being fixed by tightening this overlap part with the volt | bolt 6a and the nut 6b.
[0029]
According to such a configuration, spot welding 8 is applied to a plurality of portions of the overlapping portion of the base portion 1a of the frame 1 and the vertical portion 4a of the support portion 4, and the overlapping portion is welded on the plate surface. Compared with the prior art in which only the edge portion as shown in FIG. 10 is fillet welded, the strength of the joint portion between the frame 1 and the support portion 4 is improved.
[0030]
"Experimental example"
FIG. 7 shows the results of a load test on the ceramic sound-absorbing plate panel according to the present invention shown in FIGS. 1 to 3 and the conventional ceramic sound-absorbing plate shown in FIGS. .
7A is an experimental value of the ceramic sound-absorbing plate panel structure according to the prior art shown in FIGS. 9 to 10, and FIG. 7B is a ceramic sound-absorbing plate panel structure according to the embodiment of the present invention shown in FIGS. Is an experimental value.
[0031]
As shown in the case (1) of FIG. 7, when the sound absorbing plate panel support portion is fillet welded, the one using the frame 01 of the prior art shown in FIG. 9 was broken at a maximum load of 180 kgf. In the case of using the frame 1 of the present invention shown in FIG. 1, the breaking strength increased by about 1.6 times up to 305 kgf.
[0032]
In the case of the prior art (FIG. 10) in which the frame 01 and the support 4 shown in the case (1) of FIG. 7 are fixed by fillet welding, the weld was broken at a maximum load of 180 kg. On the other hand, in the case of the present invention in which the frame 1 shown in (B) of the case (2) and the support portion 4 are fixed by spot welding (the one shown in FIG. 3), the weld portion is not broken at a maximum load of 380 kg. The strength was more than twice that of the conventional one.
[0033]
5 to 6 show a ceramic sound-absorbing plate according to a second embodiment of the present invention, FIG. 5 is an external perspective view of the sound-absorbing plate, and FIG. 6 is a cross-sectional view taken along the line DD in FIG. In this embodiment, as shown in FIG. 6, the ceramic sound-absorbing plate 2 has metal nets 9 and 9 in which aluminum fine wires are reticulated on both the upper and lower surfaces of the ceramic layer 10.
[0034]
According to this embodiment, since the metal nets 9 are attached to the upper and lower surfaces of the ceramic layer 10, the strength against vibration, impact, etc. is improved, and the ceramic layer 10 is dropped and scattered by these loads. Can be avoided.
In addition, since the metal mesh 9 is attached to the upper and lower surfaces of the ceramic layer 10, the bending strength is increased and the durability against bending load is improved as compared with the conventional ceramic sound absorbing plate in which the metal mesh is attached only to one surface.
[0035]
"Experimental example"
FIG. 8 shows a conventional product (A) in which an aluminum wire mesh 9 is attached to one side of a ceramic layer 10 and a product (B) of the present invention in which aluminum wire meshes 9 and 9 are attached to upper and lower surfaces of the ceramic layer 10. The bending load test result with what is shown in FIGS. 5-6 is shown.
As apparent from FIG. 8, the bending strength of the conventional product (A) is 120 kgf / cm 2 , whereas the bending strength of the product (B) of the present invention is significantly increased to 150 kgf / cm 2 .
[0036]
【The invention's effect】
As described above, according to the present invention, since the frame body made of grooved steel with lip is provided, the bending rigidity and torsional rigidity of the frame body are increased as compared with the prior art, and the support rigidity of the ceramic sound absorbing plate is increased. As a result, the bending of the sound absorbing plate can be reduced, thereby preventing the sound absorbing plate from cracking and improving the durability.
Moreover, by using Z-shaped steel for the joint portions of the plurality of ceramic sound-absorbing plates, the joint portions have a flexible structure, the restraining force is reduced, and cracking of the sound-absorbing plates due to the restraint can be prevented.
Furthermore, since the joint portion is made of lightweight Z-shaped steel, the weight of the joint portion is reduced and the structure is simplified.
[0037]
[0038]
Further, according to the present invention, since the plate surfaces of the frame and the support are partially welded by spot welding, the strength of the welded portion is higher than that of a conventional fillet welded product that welds only the end portion. This improves the strength of the support structure for the ceramic sound-absorbing plate panel.
[0039]
In addition, according to the present invention, by attaching the metal mesh to the upper and lower surfaces of the ceramic layer, the bending strength can be improved and the ceramic layer can be prevented from falling off or scattering due to vibration, impact, or the like.
[0040]
[0041]
In short, according to the present invention, the durability of the ceramic sound-absorbing plate and the support structure portion thereof can be improved, so that the ceramic sound-absorbing plate panel can be lengthened and the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view (AA line diagram of FIG. 4) showing a main part of a ceramic sound-absorbing material panel according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view (BB line diagram of FIG. 4) showing the vicinity of a joint portion of the ceramic sound-absorbing material panel.
FIG. 3 is an enlarged view of a part C in FIG. 2;
FIG. 4 is an overall perspective view of a ceramic sound-absorbing material panel to which the present invention is applied.
FIG. 5 is an external perspective view of a ceramic sound-absorbing material panel according to a second embodiment of the present invention.
6 is a cross-sectional view taken along the line DD in FIG.
FIG. 7 is a table showing a load test result of the ceramic sound-absorbing material panel according to the present invention.
FIG. 8 is a table showing the bending test result of the ceramic sound-absorbing material according to the present invention.
FIG. 9 is a view corresponding to FIG. 1 showing a ceramic sound-absorbing material panel according to the prior art.
FIG. 10 is a view corresponding to FIG. 3 showing a ceramic sound-absorbing material panel according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame 1a Base part 1b Arm part 1c Lip part 2 Ceramic sound-absorbing plate 3 Joint 3a Base part 3b Arm part 4 Support part 5 Panel attachment member 6a Bolt 6b Nut 7 Fillet weld 8 Spot welding 9 Wire net 10 Ceramic layer 50 Ceramic sound-absorbing board panel

Claims (3)

セラミックス材からなるセラミックス吸音板の周囲を鋼材からなる枠体で支持してなるセラミックス吸音板パネルにおいて、前記セラミックス吸音板を複数個設けて継手部材により連結し、該継手部材は垂直なベース部の両端にアーム部を互いに逆方向に結合してなるZ形鋼からなり、該Z形鋼のベース部を前記セラミックス吸音板の端面間に挿み込むことにより該吸音板を連結し、
前記枠体は、コの字状断面を有する溝形鋼の一側アーム部の端部から前記吸音板側へ向けて突設されたリップ部が形成されたリップ付き溝形鋼からなり、前記吸音板を前記リップ先端と、該リップ部と対向する他側アーム部の吸音板支持面とにより前記吸音板を狭持させて支持することを特徴とするセラミックス吸音板パネル構造。
In a ceramic sound absorbing plate panel in which a ceramic sound absorbing plate made of a ceramic material is supported by a frame made of steel, a plurality of the ceramic sound absorbing plates are provided and connected by a joint member. It consists of a Z-shaped steel formed by connecting arm portions in opposite directions to both ends, and the sound absorbing plate is connected by inserting the base portion of the Z-shaped steel between the end surfaces of the ceramic sound absorbing plate,
The frame body is Ri Do from U-shaped cross section lipped groove-shaped steel lip which projects towards the end of one side arm of the channel steel to the sound absorbing plate side is formed to have a, A ceramic sound-absorbing plate panel structure, wherein the sound-absorbing plate is supported by the sound-absorbing plate sandwiched between a tip end of the lip and a sound-absorbing plate-supporting surface of the other arm portion facing the lip portion .
前記枠体にその長手方向に沿って支持部材をスポット溶接により固着し、該支持部材をボルト等の締結部材により着脱可能にパネル取付部材に取付けてなることを特徴とする請求項1記載のセラミックス吸音板パネル構造。  2. The ceramic according to claim 1, wherein a support member is fixed to the frame body along the longitudinal direction by spot welding, and the support member is detachably attached to a panel attachment member by a fastening member such as a bolt. Sound absorbing panel structure. 前記セラミックス吸音板は、両面に金網を固着して、該金網を介して前記吸音板を前記リップ先端と、該リップ部と対向する他側アーム部の吸音板支持面とにより前記吸音板を狭持させて支持することを特徴とする請求項1記載のセラミックス吸音板パネル構造。The ceramic sound-absorbing plate has a metal mesh fixed on both sides , and the sound-absorbing plate is narrowed by a sound-absorbing-plate support surface of the other arm portion facing the lip portion and the sound-absorbing plate via the metal mesh. ceramic sound absorbing plate panel structure according to claim 1 Symbol mounting, characterized in that the support by lifting.
JP08573799A 1999-03-29 1999-03-29 Ceramic sound absorber panel structure Expired - Fee Related JP3697103B2 (en)

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CN100346035C (en) * 2003-06-06 2007-10-31 三菱重工业株式会社 Railway tunnel entrance and sound absorption device in tunnel and method for mounting ceramic sound absorbing plate
JP4616813B2 (en) * 2006-09-20 2011-01-19 三菱化工機株式会社 Sound absorbing panel, assembling method and construction method thereof
JP4658890B2 (en) * 2006-09-28 2011-03-23 三菱化工機株式会社 Absorption and insulation structure of vehicle travel path
KR100998282B1 (en) 2010-08-16 2010-12-03 (주)해승종합건축사사무소 Floor floor structure of building that reduces noise between floors
CN102677601A (en) * 2011-03-15 2012-09-19 江苏远兴环保集团有限公司 Full sound-absorbing sound-shielding board
KR101462029B1 (en) * 2013-01-15 2014-11-21 김득관 A means of noise absorbing for heavy equipment
JP6690981B2 (en) * 2016-04-07 2020-04-28 三菱重工エンジン&ターボチャージャ株式会社 Sound absorbing material mounting structure, sound absorbing material mounting method, and portable container
JP7819797B1 (en) * 2025-01-17 2026-02-25 積水ハウス株式会社 Wall insulation joint members and wall insulation structures

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