JP5185877B2 - Rail soundproofing device - Google Patents

Rail soundproofing device Download PDF

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JP5185877B2
JP5185877B2 JP2009090649A JP2009090649A JP5185877B2 JP 5185877 B2 JP5185877 B2 JP 5185877B2 JP 2009090649 A JP2009090649 A JP 2009090649A JP 2009090649 A JP2009090649 A JP 2009090649A JP 5185877 B2 JP5185877 B2 JP 5185877B2
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cover
sound insulation
rail
sound
insulation cover
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JP2010242337A (en
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芳文 松田
貴士 小口
裕幸 安部
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Priority to JP2009090649A priority Critical patent/JP5185877B2/en
Priority to KR1020090048697A priority patent/KR101020684B1/en
Priority to PCT/JP2010/055405 priority patent/WO2010113807A1/en
Priority to EP10758579.6A priority patent/EP2415933B1/en
Priority to CN2010800029071A priority patent/CN102187035B/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E01B19/003—Means for reducing the development or propagation of noise

Description

この発明は、鉄道のレールから発生する騒音を防止するレールの防音装置に関する。   The present invention relates to a rail soundproofing device for preventing noise generated from railroad rails.

に関する。 About.

この種の防音装置としては、例えば、特許文献１に記載されているものが知られている。この防音装置は、図７に示されているように、レールRを固定している３つの第１〜第３枕木S（図示は第２枕木のみ）が、レール長さ方向一方の側から他方の側にかけて、順次並べられており、第１および第２枕木Sに第１遮音カバー81が渡されるとともに、第２および第３枕木Sに第２遮音カバー82が渡されており、第１および第２枕木Sのピッチに合わせて第１遮音カバー81の長さが形成されるとともに、第２および第３枕木Sのピッチに合わせて第２遮音カバー82の長さが形成されており、第２枕木S上において、第１遮音カバー81および第２遮音カバー82の相対する端面同士に突合せ部83を形成した状態で、第１遮音カバー81および第２遮音カバー82がレール表面の所要部分に被覆されているものである。   As this type of soundproofing device, for example, a device described in Patent Document 1 is known. As shown in FIG. 7, the soundproofing device includes three first to third sleepers S (only the second sleeper shown in the figure) that fix the rails R from one side to the other in the rail length direction. The first sound insulation cover 81 is passed to the first and second sleepers S, and the second sound insulation cover 82 is passed to the second and third sleepers S. The length of the first sound insulation cover 81 is formed according to the pitch of the second sleeper S, and the length of the second sound insulation cover 82 is formed according to the pitch of the second and third sleepers S. On the two sleepers S, the first sound insulation cover 81 and the second sound insulation cover 82 are provided at the required portions of the rail surface in a state in which the butted portions 83 are formed between the opposing end surfaces of the first sound insulation cover 81 and the second sound insulation cover 82. It is what is covered.

この防音装置では、枕木ピッチにはバラツキがあり、そのばらつきに合わせて長さの異なる遮音カバー81、82を多数準備する必要があった。   In this soundproofing device, there is a variation in the sleeper pitch, and it is necessary to prepare a large number of sound insulation covers 81 and 82 having different lengths according to the variation.

この煩雑さを避けるために、小さめの枕木ピッチに合わせて一定の長さに形成した１種類の遮音カバー81、82を準備することも行われている。この場合、図８に示すように、第２枕木S上において、第１遮音カバー81および第２遮音カバー82の相対する端面同士が突き合わされないで、その端面間に隙間84が生じることがあった。そうすると、その隙間84から騒音が漏れ出ることとなって、騒音防止効果が損なわれる。   In order to avoid this complication, one type of sound insulation cover 81, 82 formed in a certain length according to a small sleeper pitch is also prepared. In this case, as shown in FIG. 8, on the second sleeper S, the opposing end surfaces of the first sound insulating cover 81 and the second sound insulating cover 82 are not brought into contact with each other, and a gap 84 may be formed between the end surfaces. It was. If it does so, noise will leak from the clearance gap 84 and a noise prevention effect will be impaired.

特開２００７−２２４７００号公報JP 2007-224700 A

この発明の目的は、長さの異なる遮音カバーを多数準備する必要が無く、同じ長さの１種類の遮音カバーによって騒音を効果的に防止できるレールの防音装置を提供することにある。   An object of the present invention is to provide a rail soundproofing device that can effectively prevent noise by using one kind of soundproofing cover having the same length without preparing a large number of soundproofing covers having different lengths.

この発明によるレールの防音装置は、レールを固定している３つの第１〜第３枕木が、レール長さ方向一方の側から他方の側にかけて、順次並べられており、第１および第２枕木に第１遮音カバーが渡されるとともに、第２および第３枕木に第２遮音カバーが渡されており、各遮音カバーの長さが、一定でありかつ第１および第２枕木のピッチ並びに第２および第３枕木のピッチのいずれよりも大きく形成されており、第２枕木上において、第１遮音カバーおよび第２遮音カバーの相対する端部同士が所要幅にわたって重ね合わされた状態で、第１遮音カバーおよび第２遮音カバーがレール表面の所要部分に被覆されているものである。   In the rail soundproofing device according to the present invention, three first to third sleepers fixing the rail are sequentially arranged from one side to the other side in the rail length direction, and the first and second sleepers are arranged. The second sound insulation cover is passed to the second and third sleepers, the length of each sound insulation cover is constant, and the pitch and second of the first and second sleepers are passed. And the first sound insulation in a state where the opposite ends of the first sound insulation cover and the second sound insulation cover overlap each other over the required width on the second sleeper. The cover and the second sound insulation cover are covered with a required portion of the rail surface.

この発明によるレールの防音装置では、枕木ピッチよりも大きい長さをもつ１種類の遮音カバーを用いて、その長さの長い分だけ、隣り合う２つの遮音カバーの相対する端部同士を重ね合わせているため、隣り合う２つの遮音カバーの相対する端面間に隙間を生じさせることなく、レール表面の所要部分の全体を被覆することができる。   In the rail soundproofing device according to the present invention, one type of sound insulation cover having a length larger than the sleeper pitch is used, and the opposite ends of two adjacent sound insulation covers are overlapped by the length of the length. Therefore, the entire required portion of the rail surface can be covered without generating a gap between the opposing end surfaces of two adjacent sound insulation covers.

さらに、レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面上端から底部上面先端にかけて渡されている鋼板製カバー本体と、カバー本体の内面に貼り付けられている吸音材とよりなり、第１遮音カバーおよび第２遮音カバーの重ね合わされた部分において、各遮音カバーのカバー本体のみが重ね合わされるように、各遮音カバーの吸音材が除去されていると、遮音カバーの重ね合わせ部において、比較的厚みのある吸音材を邪魔させることなく、比較的厚みの薄いカバー本体だけを作業性良く重ね合わせることができる。   In addition, the rail consists of a head, abdomen, and bottom that are connected sequentially from top to bottom, and each sound insulation cover is affixed to the inner surface of the cover body and the steel plate cover body that passes from the top of the abdomen side to the top of the bottom top The sound absorbing material of each sound insulating cover is removed so that only the cover body of each sound insulating cover is overlapped in the overlapped portion of the first sound insulating cover and the second sound insulating cover. In the overlapping portion of the sound insulation cover, only the relatively thin cover body can be overlapped with good workability without interfering with the relatively thick sound absorbing material.

また、レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面および底部上面に被覆されている側面カバーと、側面カバーの下端に連なってレール底面に被覆されている底面カバーとよりなると、レールの腹部側面から底部下面にかけての広い面積が遮音カバーによって被覆されるから、一層の騒音防止効果が期待できる。   The rail consists of a head, abdomen, and bottom that are connected sequentially from top to bottom, and each sound insulation cover covers the side of the abdomen and the top of the bottom, and the bottom of the side cover and covers the bottom of the rail. If the bottom cover is formed, a large area from the abdomen side surface to the bottom bottom surface of the rail is covered with the sound insulation cover, so that a further noise prevention effect can be expected.

この発明によれば、長さの異なる遮音カバーを多数準備する必要が無く、同じ長さの１種類の遮音カバーによって騒音を効果的に防止できるレールの防音装置が提供される。   According to the present invention, it is not necessary to prepare a large number of sound insulation covers having different lengths, and a sound insulation device for a rail that can effectively prevent noise by one type of sound insulation cover having the same length is provided.

この発明による防音装置の垂直縦断面図である。It is a vertical longitudinal cross-sectional view of the soundproofing device by this invention. 同側面図である。It is the same side view. この発明の他の実施例による防音装置の垂直縦断面図である。It is a vertical longitudinal cross-sectional view of the soundproofing device by other Example of this invention. 同側面図である。It is the same side view. 同装置による防音効果を示すトータル周波数のグラフである。It is a graph of the total frequency which shows the soundproofing effect by the same apparatus. 同周波数毎のグラフである。It is a graph for every frequency. 従来例を示す図２相当の側面図である。It is a side view equivalent to FIG. 2 which shows a prior art example. 他の従来例を示す図２相当の側面図である。It is a side view equivalent to FIG. 2 which shows another prior art example.

図１を参照すると、レールRは、上から下にかけ順次連なる頭部Rt、腹部Rwおよび底部Rbよりなる。   Referring to FIG. 1, the rail R is composed of a head portion Rt, an abdominal portion Rw, and a bottom portion Rb that are sequentially connected from top to bottom.

腹部Rw左右両面から底部Rb上面にかけて、左右一対の遮音カバー11が被覆されている。両遮音カバー11は、左右の向きは逆であるが、同一構造のものである。   A pair of left and right sound insulation covers 11 are covered from the left and right sides of the abdomen Rw to the upper surface of the bottom Rb. Both sound-insulating covers 11 have the same structure, although the left and right directions are opposite.

各遮音カバー11は、腹部Rw側面上端から底部Rb上面先端に掛け渡されている鋼板製カバー本体11Aと、カバー本体11Aの内面に貼り付けられている薄肉状制振樹脂製制振材21および厚肉状発泡樹脂製吸音材22とよりなる。   Each sound insulation cover 11 includes a steel plate cover main body 11A spanned from the upper end of the side surface of the abdomen Rw to the front end of the bottom Rb, and a thin-walled vibration damping resin damping material 21 attached to the inner surface of the cover main body 11A and The sound absorbing material 22 is made of a thick foamed resin.

図２に、上記遮音カバー11の設置状態が示されている。３つの第１〜第３枕木S1〜S3が、左側から右側にかけて、順次敷設され、これに、左右方向にのびたレールRが支持されている。各枕木S1〜S3上において、レールRは、締結具Tによって固定されている。   FIG. 2 shows the installation state of the sound insulation cover 11. Three first to third sleepers S1 to S3 are sequentially laid from the left side to the right side, and a rail R extending in the left-right direction is supported by the three first to third sleepers S1 to S3. The rail R is fixed by a fastener T on each sleeper S1 to S3.

第１および第２枕木S1、S2に第１遮音カバー31が渡されるとともに、第２および第３枕木S2、S3に第２遮音カバー32が渡されている。   The first sound insulation cover 31 is passed to the first and second sleepers S1, S2, and the second sound insulation cover 32 is passed to the second and third sleepers S2, S3.

第１および第２枕木S1、S2の第１ピッチP1と、第２および第３枕木S2、S3の第２ピッチP2とは、同一または前者よりも後者が大である。第１遮音カバー31および第２遮音カバー32の長さLは、同一である。これらの大きさは、P1≦P2＜Lの関係になっている。   The first pitch P1 of the first and second sleepers S1, S2 and the second pitch P2 of the second and third sleepers S2, S3 are the same or the latter is larger than the former. The length L of the first sound insulation cover 31 and the second sound insulation cover 32 is the same. These sizes have a relationship of P1 ≦ P2 <L.

第２枕木S2上において、第１遮音カバー31の右端部および第２遮音カバー32の左端部には、互いに所要幅Bにわたって重ね合わされた重なり部33が設けられている。この重なり部33の幅Bは、枕木ピッチのバラツキ、防音性能を考慮すると、50〜100mm程度であることが好ましい。   On the second sleeper S2, an overlapping portion 33 is provided on the right end portion of the first sound insulating cover 31 and the left end portion of the second sound insulating cover 32 so as to overlap each other over the required width B. The width B of the overlapping portion 33 is preferably about 50 to 100 mm in consideration of variations in sleeper pitch and soundproofing performance.

さらに、詳しく図示しないが、第１遮音カバー31の右端部および第２遮音カバー32の重なり部33において、各遮音カバー31、32のカバー本体（図示略）のみが重ね合わされるように、各遮音カバー31、32の制振材21および吸音材22が除去されている。   Further, although not shown in detail, each sound insulation so that only the cover body (not shown) of each sound insulation cover 31 and 32 is overlapped at the right end portion of the first sound insulation cover 31 and the overlapping portion 33 of the second sound insulation cover 32. The damping material 21 and the sound absorbing material 22 of the covers 31 and 32 are removed.

また、第１遮音カバー31の右端部および第２遮音カバー32の左端部には、締結具Tとの干渉を避けるための切欠31a、32aがそれぞれ形成されている。   Further, notches 31a and 32a for avoiding interference with the fastener T are formed at the right end portion of the first sound insulation cover 31 and the left end portion of the second sound insulation cover 32, respectively.

図３に、遮音カバー41の変形例が示されている。この変形例による遮音カバー41は、全体を一体的に形成されている側面カバー42および底面カバー43よりなる。   FIG. 3 shows a modification of the sound insulation cover 41. The sound insulation cover 41 according to this modification includes a side cover 42 and a bottom cover 43 that are integrally formed as a whole.

側面カバー42は、図１に示す遮音カバー41と基本的に同一構造のもので、腹部Rw側面上端から底部Rb上面先端にかけて渡されている鋼板製側面カバー本体42Aと、これの内面に貼り付けられている制振樹脂製制振材51および発泡樹脂製吸音材52とよりなる。底面カバー43は、側面カバー本体42Aの下端に上端を連らねた横断面Ｌ状鋼板製底面カバー本体43Aと、これの水平部上面に貼り付けられている制振樹脂製制振材53および発泡樹脂製吸音材54とよりなる。   The side cover 42 has basically the same structure as the sound insulation cover 41 shown in FIG. 1, and is attached to the inner surface of the steel plate side cover main body 42A that extends from the upper end of the side surface of the abdomen Rw to the upper end of the bottom surface Rb. The vibration damping resin damping material 51 and the foamed resin sound absorbing material 52 are formed. The bottom cover 43 includes a bottom cover body 43A made of L-shaped steel plate having an upper end connected to the lower end of the side cover body 42A, and a damping resin damping material 53 attached to the upper surface of the horizontal portion. The sound absorbing material 54 is made of foamed resin.

この変形例による遮音カバー41は、図４に示すように、隣り合う２つの遮音カバー41の相対する端部同士は、１つの枕木S上において、重なり部61を形成している。側面カバー42には、図２に示す切欠31a、32aと同様に、切欠71、72が形成されている。また、底面カバー43には、枕木Sとの干渉を避けるための切欠73、74が形成されている。   In the sound insulation cover 41 according to this modification, as shown in FIG. 4, opposing end portions of two adjacent sound insulation covers 41 form an overlapping portion 61 on one sleeper S. In the side cover 42, notches 71 and 72 are formed in the same manner as the notches 31a and 32a shown in FIG. Further, the bottom cover 43 is formed with notches 73 and 74 for avoiding interference with the sleepers S.

本願発明による遮音カバーの防音効果の測定結果を、上記従来技術の項で説明した遮音カバーによる防音効果と比較して、説明する。   The measurement result of the sound insulation effect of the sound insulation cover according to the present invention will be described in comparison with the sound insulation effect by the sound insulation cover described in the section of the related art.

測定方法は、以下の通りである。枕木スパン600mm、50NレールRを、振動スピーカから出力するピンクノイズで加振する。振動スピーカからの直接音の影響を防ぐため、加振点から2m離れた場所で、レールRの腹部Rwから100mmの場所にマイクロフォンを置き、騒音レベルを測定した。   The measuring method is as follows. A sleeper span 600mm, 50N rail R is vibrated with pink noise output from a vibration speaker. In order to prevent the influence of the direct sound from the vibration speaker, a microphone was placed at a location 2 m away from the excitation point and 100 mm from the abdomen Rw of the rail R, and the noise level was measured.

防音効果は、レールRにカバーを施さない裸のレールRの音圧レベルから、カバーを施したレールRの音圧レベルを差し引きしたものである。   The soundproofing effect is obtained by subtracting the sound pressure level of the rail R with the cover from the sound pressure level of the bare rail R where the rail R is not covered.

図５および図６に、測定結果が示されている。図５に、400〜4kHz間でトータルした音圧平均値が、図６に、400〜4kHz間の周波数毎の音圧がそれぞれ示されている。   FIG. 5 and FIG. 6 show the measurement results. FIG. 5 shows a total sound pressure average value between 400 and 4 kHz, and FIG. 6 shows a sound pressure for each frequency between 400 and 4 kHz.

図５および図６中、aは、図７に示すカバー間に隙間が無い場合、bは、図８に示すカバー間に隙間が有る場合、cは、図１に示すように、カバー端部同士を重ね合わせた場合、dは、cで示すカバーの被覆面に加えて、図３に示すように、レールR底面をカバーで被覆した場合をそれぞれ示すものである。   5 and 6, a is when there is no gap between the covers shown in FIG. 7, b is when there is a gap between the covers shown in FIG. 8, c is the end of the cover as shown in FIG. In the case where the two are overlapped with each other, d indicates a case where the bottom surface of the rail R is covered with a cover as shown in FIG. 3 in addition to the cover surface of the cover indicated by c.

bで示すように、カバー間に隙間が有る場合は、音圧低減効果は最も低い。aで示すカバー間に隙間が無い場合と、cで示すように、カバーの端部同士を重ね合わせた場合とでは、同等レベルだけ音圧低減効果が有る。さらに、カバーにより、レールR底面を被覆すると、音圧低減効果はさらに高いことは、dに示す通りである。
As shown by b, the sound pressure reduction effect is the lowest when there is a gap between the covers. When there is no gap between the covers indicated by a and when the ends of the covers are overlapped as shown by c, there is an effect of reducing the sound pressure by the same level. Furthermore, as shown in d, the effect of reducing the sound pressure is even higher when the bottom surface of the rail R is covered with a cover.

この発明によるレールの防音装置は、長さの異なる遮音カバーを多数準備する必要が無く、同じ長さの１種類の遮音カバーによって騒音を効果的に防止することを達成するのに適している。   The rail soundproofing device according to the present invention does not require a large number of soundproof covers having different lengths, and is suitable for achieving effective prevention of noise by one type of soundproof cover having the same length.

S1〜S3 枕木
31、32 １遮音カバー
L カバー長さ
P1、P2 枕木ピッチ
R レール S1-S3 sleepers
31, 32 1 Sound insulation cover
L Cover length
P1, P2 Sleeper pitch
R rail

Claims (3)

レールを固定している３つの第１〜第３枕木が、レール長さ方向一方の側から他方の側にかけて、順次並べられており、第１および第２枕木に第１遮音カバーが渡されるとともに、第２および第３枕木に第２遮音カバーが渡されており、各遮音カバーの長さが、一定でありかつ第１および第２枕木のピッチ並びに第２および第３枕木のピッチのいずれよりも大きく形成されており、第２枕木上において、第１遮音カバーおよび第２遮音カバーの相対する端部同士が所要幅にわたって重ね合わされた状態で、第１遮音カバーおよび第２遮音カバーがレール表面の所要部分に被覆されているレールの防音装置。   The three first to third sleepers fixing the rail are sequentially arranged from one side to the other side in the rail length direction, and the first sound insulation cover is passed to the first and second sleepers. The second sound insulation cover is passed to the second and third sleepers, the length of each sound insulation cover is constant, and the pitch of the first and second sleepers and the pitch of the second and third sleepers The first sound insulation cover and the second sound insulation cover are on the rail surface in a state where the opposite ends of the first sound insulation cover and the second sound insulation cover are overlapped over the required width on the second sleeper. A soundproofing device for rails that are covered on the required parts. レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面上端から底部上面先端にかけて渡されている鋼板製カバー本体と、カバー本体の内面に貼り付けられている吸音材とよりなり、第１遮音カバーおよび第２遮音カバーの重ね合わされた部分において、各遮音カバーのカバー本体のみが重ね合わされるように、各遮音カバーの吸音材が除去されている請求項１に記載のレールの防音装置。   The rail consists of a head, abdomen, and bottom that are connected sequentially from top to bottom, and each sound insulation cover is affixed to the inner surface of the cover body and the steel plate cover body that passes from the top of the abdomen side to the top of the bottom top The sound absorbing material of each sound insulating cover is removed so that only the cover body of each sound insulating cover is overlapped in the overlapped portion of the first sound insulating cover and the second sound insulating cover. The rail soundproofing device according to 1. レールが、上から下にかけて順次連なる頭部、腹部および底部よりなり、各遮音カバーが、腹部側面および底部上面に被覆されている側面カバーと、側面カバーの下端に連なってレール底面に被覆されている底面カバーとよりなる請求項１に記載のレールの防音装置。   The rail consists of a head, abdomen, and bottom that are connected sequentially from top to bottom, and each sound insulation cover is covered with the side cover that covers the side of the abdomen and the top of the bottom, and the bottom of the side cover that covers the bottom of the rail. The soundproofing device for a rail according to claim 1, further comprising a bottom cover.
JP2009090649A 2008-11-25 2009-04-03 Rail soundproofing device Active JP5185877B2 (en)

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JP2009090649A JP5185877B2 (en) 2009-04-03 2009-04-03 Rail soundproofing device
KR1020090048697A KR101020684B1 (en) 2008-11-25 2009-06-02 Rail sound absorbing apparatus
PCT/JP2010/055405 WO2010113807A1 (en) 2009-04-03 2010-03-26 Noise insulation device for rail
EP10758579.6A EP2415933B1 (en) 2009-04-03 2010-03-26 Noise insulation device for rail
CN2010800029071A CN102187035B (en) 2009-04-03 2010-03-26 Noise insulation device for rail

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