JP4613815B2 - Noise barrier for railway vehicles - Google Patents

Noise barrier for railway vehicles Download PDF

Info

Publication number
JP4613815B2
JP4613815B2 JP2005373729A JP2005373729A JP4613815B2 JP 4613815 B2 JP4613815 B2 JP 4613815B2 JP 2005373729 A JP2005373729 A JP 2005373729A JP 2005373729 A JP2005373729 A JP 2005373729A JP 4613815 B2 JP4613815 B2 JP 4613815B2
Authority
JP
Japan
Prior art keywords
noise
sound insulation
railway vehicle
current collector
traveling direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2005373729A
Other languages
Japanese (ja)
Other versions
JP2007176192A (en
Inventor
潔 森田
誠 渡辺
貴裕 眺野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2005373729A priority Critical patent/JP4613815B2/en
Publication of JP2007176192A publication Critical patent/JP2007176192A/en
Application granted granted Critical
Publication of JP4613815B2 publication Critical patent/JP4613815B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Landscapes

  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Description

本発明は、集電装置に係わり、特に高速走行する鉄道車両などの空力騒音を低減する鉄道車両の遮音壁に関するものである。   The present invention relates to a current collector, and more particularly to a sound insulation wall of a railway vehicle that reduces aerodynamic noise of a railway vehicle that travels at a high speed.

鉄道車両の高速化に伴う空力騒音は、車両走行速度の６〜８乗程度に比例して増加するため、走行速度の向上に伴い急激に増加する。   Since the aerodynamic noise accompanying the increase in the speed of the railway vehicle increases in proportion to the sixth to eighth power of the vehicle traveling speed, it rapidly increases as the traveling speed is improved.

一方、環境の保全に対する要求は今後ますます高まるものと考えられる。このため、高速で走行する車両では主たる空力音源である集電装置の低騒音化が重要である。   On the other hand, the demand for environmental conservation is expected to increase in the future. For this reason, it is important to reduce the noise of the current collector, which is the main aerodynamic sound source, for vehicles traveling at high speed.

この集電装置の低騒音化として、例えば特許文献１に開示されているように集電装置の車両進行方向に対して両側に遮音壁を設けて空力騒音の低減を図ったものがある。   As a noise reduction of the current collector, for example, as disclosed in Patent Document 1, there is one in which sound insulation walls are provided on both sides with respect to the vehicle traveling direction of the current collector to reduce aerodynamic noise.

また、特許文献２では集電装置の車両進行方向に対して両側に設けた遮音壁において、遮音壁内部に粒状体を配置し、遮音壁単体の空力騒音低減を提案したものがある。   Further, Patent Document 2 proposes a method for reducing the aerodynamic noise of a sound insulating wall alone by disposing a granular body inside the sound insulating wall in the sound insulating walls provided on both sides with respect to the vehicle traveling direction of the current collector.

さらに、特許文献３では鉄道路線や自動車用道路に設置される防音壁であって、防音壁の上端部形状をＶ字型や騒音源に対して近づく方向に傾斜することで、防音性能向上を提案したものがある。   Further, Patent Document 3 is a soundproof wall installed on a railway line or an automobile road, and the soundproof performance is improved by inclining the shape of the upper end of the soundproof wall toward the V-shape or the noise source. There is a proposal.

特開昭５８−４６６７号公報Japanese Patent Laid-Open No. 58-4667 特開２００１−２６８７０１号公報JP 2001-268701 A 特開平９−２６４００９号公報JP-A-9-264209

上記特許文献１〜３は遮音板間の音響共鳴の発生を防止することについては不十分であった。   The above Patent Documents 1 to 3 are insufficient for preventing the occurrence of acoustic resonance between the sound insulating plates.

本発明の目的は、鉄道車両に搭載される集電装置から発生する空力騒音を低減した車両用の遮音壁を提供することにある。 An object of the present invention is to provide a sound insulation wall for a vehicle in which aerodynamic noise generated from a current collector mounted on a railway vehicle is reduced.

上記目的は、鉄道車両の上部に搭載された集電装置を前記鉄道車両の進行方向に対して両側を覆うように設けられた鉄道車両の遮音壁において、前記鉄道車両の進行方向から見た前記遮音壁の断面形状が、上部では高さが高くなるにつれ前記鉄道車両の中心部から離れる方向に向かって広がる形状であり、下部では高さが低くなるにつれ前記鉄道車両の中心部から離れる方向に向かって広がる形状であることを特徴とする鉄道車両の遮音壁によって達成できる。 The object is to provide a sound insulating wall of a railway vehicle provided so as to cover both sides of the current collecting device mounted on the upper part of the railway vehicle with respect to the traveling direction of the railway vehicle. The cross-sectional shape of the upper part is a shape that widens in the direction away from the center of the railway vehicle as the height increases at the top, and the direction of the distance from the center of the railway vehicle decreases as the height decreases at the bottom. This can be achieved by a sound insulation wall of a railway vehicle, which is characterized by a spreading shape.

また上記目的は、前記鉄道車両の進行方向に対して前側または後側の少なくとも一方の端部を側面から見た断面が凸形状と凹形状が交互に配置された波型形状となっていることにより達成される。   In addition, the object is to have a corrugated shape in which convex and concave shapes are alternately arranged in a cross section as viewed from the side of at least one of the front and rear ends with respect to the traveling direction of the railway vehicle. Is achieved.

また上記目的は、前記鉄道車両の進行方向に対して前側端部の側面から見た断面が凸形状と凹形状が交互に配置された波型形状となっている端部を直線的になるような覆いを設置したことにより達成される。   Further, the above object is to make the end portion of the corrugated shape in which the cross section viewed from the side surface of the front end portion is alternately arranged with the convex shape and the concave shape with respect to the traveling direction of the railway vehicle linear. This is achieved by installing a protective cover.

本発明によれば、鉄道車両に搭載される集電装置から発生する空力騒音を低減した鉄道車両の遮音壁を提供できる。 The present invention can provide a railway car both the sound insulating wall with reduced aerodynamic noise generated from the current collector to be mounted on a railway vehicle.

特許文献１に記載のように一般的な集電装置遮音壁の構造図を図４を用いて説明する。   A structure diagram of a general current collector sound insulation wall as described in Patent Document 1 will be described with reference to FIG.

図４において、鉄道車両用の集電装置は架線と接触して集電する集電用舟体１１およびホーン１２がアーム１３を介して台枠１４に支持される構造となっている。台枠１４は絶縁碍子１５によって車体２に支持されている。 In FIG. 4, the current collector for a railway vehicle has a structure in which a current collecting hull 11 and a horn 12 that collect current in contact with an overhead wire are supported by a frame 14 via an arm 13. The underframe 14 is supported on the vehicle body 2 by an insulator 15.

このような構成の集電装置が高速走行した場合の主騒音源を図１０に示すと、主騒音源は集電用舟体１１周りの騒音源３２および台枠１４および絶縁碍子１５周りの騒音源３３の大きく２つに分けられる。   FIG. 10 shows a main noise source when the current collector having such a configuration travels at a high speed. The main noise source is the noise source 32 around the current collecting hull 11, the noise around the underframe 14 and the insulator 15. The source 33 is roughly divided into two.

特許文献１に記載の集電装置の遮音壁では、図４に示すように鉄道車両の集電装置における車両進行方向に対して両側に車両進行方向から見た断面が直線形状で略鉛直に遮音壁１が設置されている。この略鉛直に設置した遮音壁１により集電装置の騒音を遮蔽することで集電装置全体の騒音を低減しているが、遮音壁１は略鉛直に設置した直線形状であり騒音の遮蔽効果が十分ではない。   In the sound insulation wall of the current collector described in Patent Document 1, as shown in FIG. 4, the sound insulation wall 1 has a substantially straight cross section viewed from the vehicle traveling direction on both sides with respect to the vehicle traveling direction in the railway vehicle current collecting device. Is installed. Although the noise of the current collector is reduced by shielding the noise of the current collector by the sound insulation wall 1 installed substantially vertically, the sound insulation wall 1 has a linear shape installed substantially vertically and has a sufficient noise shielding effect. is not.

また、車両進行方向に対して側面から見た図７のように、遮音壁１は車両進行方向に対して前側および後側が傾斜しているが、この傾斜辺は直線形状となっている。このような形状の場合、車両進行方向に対して後側端部においての剥離渦が大きな騒音源となることから、遮音壁単体の空力騒音が問題となる。   Further, as shown in FIG. 7 viewed from the side with respect to the vehicle traveling direction, the sound insulating wall 1 is inclined on the front side and the rear side with respect to the vehicle traveling direction, but the inclined side has a linear shape. In the case of such a shape, the separation vortex at the rear end with respect to the traveling direction of the vehicle becomes a large noise source, so aerodynamic noise of the sound insulating wall alone becomes a problem.

特許文献２に記載の集電装置の遮音壁では、鉄道車両の集電装置の車両進行方向に対して両側に車両進行方向から見た断面が直線形状で略鉛直に遮音壁を設置し、その内部に粒状体を配置して集電装置騒音の遮音と遮音壁単体から発生する空力騒音とを低減している。しかし、集電装置の騒音の遮音効果は特許文献１に記載の集電装置の遮音壁と同等であり、また遮音壁内部に粒状体を配置することから製作費用が多くなる可能性がある。   In the sound insulation wall of the current collector described in Patent Document 2, the sound insulation wall is installed in a substantially vertical shape with a cross section viewed from the vehicle traveling direction on both sides with respect to the vehicle traveling direction of the railway vehicle current collector, The granular material is arranged to reduce the sound insulation of the current collector noise and the aerodynamic noise generated from the sound insulation wall alone. However, the sound insulation effect of the noise of the current collector is equivalent to the sound insulation wall of the current collector described in Patent Document 1, and the production cost may increase because the granular material is disposed inside the sound insulation wall.

特許文献３に記載の鉄道路線や道路に設置される防音壁を図９に示すと、（ａ）は略鉛直に設置した防音壁２１、（ｂ）は防音壁の上部を音源に対して滑らかに近づける形状とした防音壁２１、（ｃ）は防音壁の上部を音源に対して直線的に近づける形状とした防音壁２１、（ｄ）は防音壁の上部をＶ字形とし、音源に対して直線的に近づける防音壁２１と、音源に対して直線的に遠ざける防音壁２１で構成されている。   9 shows a soundproof wall installed on a railway line or road described in Patent Document 3. FIG. 9A shows a soundproof wall 21 installed substantially vertically, and FIG. 9B shows a smooth top of the soundproof wall with respect to the sound source. A soundproof wall 21 shaped to be close to the sound source, (c) is a soundproof wall 21 shaped to bring the upper part of the soundproof wall linearly closer to the sound source, and (d) is a V-shaped upper part of the soundproof wall. The soundproof wall 21 is linearly close and the soundproof wall 21 is linearly away from the sound source.

また図１１には図９の（ａ）に示した防音壁２１を設置した場合における自動車２２の騒音３６が沿線の観測点３１に伝播する経路を示している。   FIG. 11 shows a path through which the noise 36 of the automobile 22 propagates to the observation point 31 along the line when the soundproof wall 21 shown in FIG. 9A is installed.

自動車２２の場合は、防音壁２１の高さを自動車２２よりも十分高くすることができるため、防音壁２１はその上端部から見て鉛直下方からの騒音の伝播を低減するような形状とすればよい。   In the case of the automobile 22, since the height of the soundproof wall 21 can be made sufficiently higher than that of the car 22, the soundproof wall 21 is shaped so as to reduce the propagation of noise from below vertically when viewed from the upper end portion thereof. That's fine.

これに対して図８は鉄道車両における騒音の伝播経路を示したものであり、高速走行する鉄道車両２は両側に防音壁２１が設置された高架上のレール２４を走行する。騒音の観測点３１は環境基準に定められており、レール中心から側方に２５ｍ、地上２３から1.2ｍの高さである。鉄道車両２からの視界確保の点から防音壁２１の高さは制限されており、集電用舟体１１等から発生する騒音を防音壁２１で遮音することは不可能である。従って、集電用舟体１１等から発生する集電装置の騒音は、車両２に遮音壁１を設置することで遮音することが必要である。   On the other hand, FIG. 8 shows a noise propagation path in a railway vehicle. The railway vehicle 2 traveling at high speed travels on an elevated rail 24 having soundproof walls 21 on both sides. The noise observation point 31 is determined by environmental standards and is 25 m from the rail center to the side and 1.2 m from the ground 23. The height of the soundproof wall 21 is limited from the viewpoint of ensuring visibility from the railway vehicle 2, and it is impossible to shield the noise generated from the current collecting boat body 11 by the soundproof wall 21. Therefore, the noise of the current collecting device generated from the current collecting hull 11 or the like needs to be insulated by installing the sound insulation wall 1 in the vehicle 2.

図１０に鉄道車両の集電装置の主音源位置を示す。   FIG. 10 shows the main sound source position of the railway vehicle current collector.

主騒音源は集電用舟体１１周りの騒音源３２、および台枠１４および絶縁碍子１５周りの騒音源３３の大きく２つに分けられる。遮音壁１の高さは鉄道車両の設置限界を示す線４１によって制限されるため、自動車の場合のように遮音壁上端部から見て鉛直下側の騒音のみ遮音すればよいわけではなく、遮音壁１の上端部から見て鉛直上側の騒音の遮音効果も向上しなければならない。そのため、図９の（ａ）（ｂ）（ｃ）に示した形状では、舟体周りの騒音源の遮蔽効果が十分ではない。また、鉄道車両の場合は空気流が防音壁にあたるので、図９の（ｄ）に示すようなＶ字形の形状とした場合は防音壁自身が大きな空力騒音を発生する可能性がある。   The main noise sources are roughly divided into two types: a noise source 32 around the current collecting hull 11 and a noise source 33 around the underframe 14 and the insulator 15. Since the height of the sound insulation wall 1 is limited by the line 41 indicating the installation limit of the railway vehicle, it is not always necessary to insulate only the noise on the lower vertical side as seen from the upper end of the sound insulation wall as in the case of an automobile. The sound insulation effect of the noise above the top when viewed from the upper end must also be improved. Therefore, in the shapes shown in FIGS. 9A, 9B, and 9C, the noise source shielding effect around the hull is not sufficient. Further, in the case of a railway vehicle, since the airflow hits the soundproof wall, the soundproof wall itself may generate a large aerodynamic noise in the case of the V shape as shown in FIG.

そこで、本発明では集電装置から発生する空力騒音を低減するのに最適な遮音壁の形状を種々検討した結果、以下のような実施例を得た。   Therefore, in the present invention, various shapes of the sound insulation wall that are optimal for reducing the aerodynamic noise generated from the current collector are studied, and the following examples are obtained.

図１は、本発明の第１の実施例を備えた鉄道車両の正面断面図である。   FIG. 1 is a front sectional view of a railway vehicle provided with a first embodiment of the present invention.

図１において、集電装置の構成は架線と接触して集電する集電用舟体１１およびホーン１２はアーム１３を介して台枠１４に支持された形状となっている。台枠１４は絶縁碍子１５によって車体２に支持されている。   In FIG. 1, the structure of the current collector is such that a current collecting hull 11 and a horn 12 that collect current in contact with an overhead wire are supported by a frame 14 via an arm 13. The underframe 14 is supported on the vehicle body 2 by an insulator 15.

本実施例では、集電装置の車両進行方向に対して両側に進行方向正面から見た断面を上部では高さが高くなるに従い車両中心部から離れる方向に向かって広がる形状であり、下部では高さが低くなるに従い車両中心部から離れる方向に向かって広がる形状とした遮音壁１を設置している。上部の広がり角度は、集電用舟体１１と騒音観測点３１とを結んだ直線３４に対して略垂直とする。   In this embodiment, the cross section of the current collector that is viewed from the front in the traveling direction on both sides with respect to the traveling direction of the vehicle has a shape that widens in the direction away from the vehicle center as the height increases in the upper part and increases in the lower part. A sound insulation wall 1 having a shape that widens in a direction away from the vehicle center as the height decreases is provided. The spread angle of the upper part is substantially perpendicular to the straight line 34 connecting the current collecting boat 11 and the noise observation point 31.

上記の遮音壁形状とすることで、集電装置騒音の遮音効果が向上するが、そのメカニズムを図８で説明する。   The sound insulation wall shape improves the sound insulation effect of the current collector noise. The mechanism will be described with reference to FIG.

図８において、鉄道車両２の騒音観測点３１は遮音壁１の上端部から見て、鉛直下方となる。図１に集電用舟体１１と騒音観測点３１とを結んだ直線３５を示している。集電用舟体１１の騒音を、車両進行方向に対して横方向に広がった線音源と仮定し理論計算を行うと、集電装置の遮音壁１は集電用舟体１１と騒音観測点３１とを結んだ直線３５に対して略垂直の場合が最も遮音効果が大きいことが導出される。また、遮音壁１の下部は高さが低くなるに従い車両中心部から離れる方向に向かって広がる形状としている。略平行な一対の板があった場合に音響共鳴が発生しやすいので、これを抑制するために互いに平行にならない形状としている。   In FIG. 8, the noise observation point 31 of the railway vehicle 2 is vertically downward when viewed from the upper end of the sound insulation wall 1. FIG. 1 shows a straight line 35 connecting the current collecting boat 11 and the noise observation point 31. If the noise of the current collecting hull 11 is assumed to be a line sound source that spreads laterally with respect to the vehicle traveling direction, theoretical calculation is performed. It is derived that the sound insulation effect is the largest when it is substantially perpendicular to the straight line 35 connecting Moreover, the lower part of the sound insulation wall 1 is made into the shape which spreads in the direction which leaves | separates from a vehicle center part as height becomes low. When there is a pair of substantially parallel plates, acoustic resonance is likely to occur. Therefore, in order to suppress this, the shapes are not parallel to each other.

さらに、絶縁碍子１５の周りの流れに影響を与えないように、遮音壁下部では高さが低くなるに従い車両中心部から離れる方向に向かって広がる形状としている。遮音壁上部と下部の境目となる高さは、内部の集電装置構造に合わせて自由に変化させても上述の遮音効果を得ることができる。   Further, in order not to affect the flow around the insulator 15, the lower part of the sound insulation wall has a shape that spreads away from the vehicle center as the height decreases. The above-described sound insulation effect can be obtained even if the height at the boundary between the upper part and the lower part of the sound insulation wall is freely changed in accordance with the structure of the current collector.

図２は、本発明の第２の実施例を備えた鉄道車両の正面断面図である。   FIG. 2 is a front cross-sectional view of a railway vehicle equipped with a second embodiment of the present invention.

図２において、本第２の実施例と第１の実施例との相違点は、鉄道車両を進行方向正面から見た場合において遮音壁１の全てを高さが高くなるに従い車両中心部から離れる方向に向かって広がる形状となっている点である。この構成であっても集電用舟体１１の騒音の遮音効果は変わらず、また進行方向正面から見た断面が直線上になるため製作は容易である。また遮音壁が絶縁碍子１５に近づくため、絶縁碍子１５の周囲流れの状況が変わり、台枠１４および絶縁碍子１５周りの騒音が悪化する場合もあるが集電用舟体１１の騒音が支配的な集電装置においては有効な手法である。   In FIG. 2, the difference between the second embodiment and the first embodiment is that when the railway vehicle is viewed from the front in the traveling direction, all of the sound insulation walls 1 are separated from the vehicle center as the height increases. It is the point which becomes the shape which spreads toward. Even with this configuration, the noise insulation effect of the current collecting boat 11 does not change, and the cross section viewed from the front in the traveling direction is straight, so that the manufacture is easy. Further, since the sound insulation wall approaches the insulator 15, the situation of the flow around the insulator 15 changes and the noise around the frame 14 and the insulator 15 may deteriorate, but the noise of the current collecting hull 11 is dominant. This is an effective method for a current collector.

図３は、第３の実施例を備えた鉄道車両の正面図である。   FIG. 3 is a front view of a railway vehicle provided with the third embodiment.

図３において、本第３の実施例と第１および第２の実施例との相違点は、進行方向正面から見た場合において遮音壁の下部を略鉛直形状となっている点である。この構成であっても、集電舟体部騒音の遮音効果は変わらず、製作も容易になる。第２の実施例に比べると絶縁碍子１５から遠ざかるため、絶縁碍子１５周囲の流れへの影響も小さく、台枠１４および絶縁碍子１５周りの騒音悪化も抑制できる。集電用舟体１１の騒音が支配的な集電装置であるが、台枠１４周りの騒音も無視できない場合においては有効な手法である。 In FIG. 3, the difference between the third embodiment and the first and second embodiments is that the lower part of the sound insulation wall has a substantially vertical shape when viewed from the front in the traveling direction. Even if it is this structure, the sound insulation effect of the current collector boat body noise does not change, and manufacture is also easy. Compared to the second embodiment, since the distance from the insulator 15 is far away, the influence on the flow around the insulator 15 is small, and noise deterioration around the frame 14 and the insulator 15 can be suppressed. Although the noise of the current collector for collector head 11 is the dominant current collector, an effective method in the case can not be ignored underframe 14 Noise around.

図５は、第４の実施例を備えた集電装置部分の側面図である。   FIG. 5 is a side view of the current collector portion provided with the fourth embodiment.

図５において、集電装置の車両進行方向に対して両側に設けられた集電装置の遮音壁を車両進行方向に対して前側又は後側の少なくとも一方の端部を車両進行方向側面から見た側面図が車両進行方向に対して凸形状と凹形状が交互に配置された波型形状となっている。このような形状とすることにより騒音発生の原因である、車両進行方向に対して後側端部において発生する剥離渦の規則性が壊れ、遮音壁自身から発生する空力騒音を小さくすることができる。凸形状および凹形状は概ね遮音壁厚さと同程度の長さとすると最も騒音低減する。   In FIG. 5, a side surface of the sound insulation wall of the current collector provided on both sides with respect to the vehicle traveling direction of the current collector as viewed from the side in the vehicle traveling direction at least one end of the front or rear side with respect to the vehicle traveling direction. The figure shows a corrugated shape in which convex and concave shapes are alternately arranged with respect to the vehicle traveling direction. By adopting such a shape, the regularity of the separation vortex generated at the rear end with respect to the vehicle traveling direction, which is the cause of noise generation, is broken, and aerodynamic noise generated from the sound insulation wall itself can be reduced. When the convex shape and the concave shape are approximately the same length as the sound insulation wall thickness, the noise is reduced most.

図６は、第５の実施例を備えた集電装置の側面図である。   FIG. 6 is a side view of the current collector provided with the fifth embodiment.

図６において、本第５の実施例が第４の実施例と異なる点は、集電装置の車両進行方向に対して両側に設けられた集電装置の遮音壁を車両進行方向に対して前側および後側の端部を車両進行方向側面から見た側面図が車両進行方向に対して凸形状と凹形状が交互に配置された波型形状とし、車両進行方向に対して前側端部を車両進行方向側面から見た側面図が直線的になるような覆いを設置した点である。このような形状とすることにより、騒音発生の原因である車両進行方向に対して後側端部において発生する剥離渦の規則性が壊れ、遮音壁自身から発生する空力騒音を小さくすることができる。また、車両進行方向に対して前側に凸形状と凹形状が交互に配置された波型端部形状を形成した場合に問題となる前側端部での空力騒音を低減することができる。   In FIG. 6, the fifth embodiment is different from the fourth embodiment in that the sound insulation walls of the current collectors provided on both sides with respect to the vehicle traveling direction of the current collector are disposed on the front side with respect to the vehicle traveling direction and The side view of the rear end as seen from the side in the vehicle traveling direction has a wave shape in which convex and concave shapes are alternately arranged with respect to the vehicle traveling direction, and the front end with respect to the vehicle traveling direction travels in the vehicle. It is the point which installed the cover which the side view seen from the direction side surface becomes linear. By adopting such a shape, the regularity of the separation vortex generated at the rear end with respect to the vehicle traveling direction, which is the cause of noise generation, is broken, and aerodynamic noise generated from the sound insulation wall itself can be reduced. In addition, it is possible to reduce aerodynamic noise at the front end, which is a problem when a corrugated end shape in which convex and concave shapes are alternately arranged on the front side with respect to the vehicle traveling direction is formed.

以上のごとく本発明によれば、鉄道車両に搭載される集電装置の車両進行方向に対して両側に進行方向正面から見た断面を上部では高さが高くなるに従い車両中心部から離れる方向に向かって広がる形状とし、かつ下部では高さが低くなるに従い車両中心部から離れる方向に向かって広がる形状とした遮音壁を設置したことにより、集電装置騒音の遮音効果を向上することができ、集電装置の全体騒音を低減することができる。 As described above, according to the present invention, the cross section viewed from the front in the traveling direction on both sides with respect to the traveling direction of the current collector mounted on the railway vehicle is increased in the direction away from the vehicle center as the height increases at the top. By installing a sound insulation wall that has a shape that expands toward the bottom, and a shape that expands toward the direction away from the vehicle center as the height decreases at the bottom, the sound insulation effect of the current collector noise can be improved. The overall noise of the electric device can be reduced.

また、鉄道車両に搭載される集電装置の車両進行方向に対して両側に設置された集電装置の遮音壁において、車両進行方向に対して前側または後側の少なくとも一方の端部を車両進行方向側面から見た形状が車両進行方向に対して凸形状と凹形状が交互に配置された波型形状とすることにより、遮音壁単体の空力騒音を低減することができる。 In addition, in the sound insulation walls of the current collector installed on both sides with respect to the vehicle traveling direction of the current collector mounted on the railway vehicle, at least one end on the front side or the rear side with respect to the vehicle traveling direction is the vehicle traveling direction. When the shape seen from the side is a corrugated shape in which convex and concave shapes are alternately arranged with respect to the vehicle traveling direction, aerodynamic noise of the sound insulating wall alone can be reduced.

さらに、鉄道車両に搭載される集電装置の車両進行方向に対して両側に設置された集電装置の遮音壁において、車両進行方向に対して前側端部の車両進行方向側面から見た形状が車両進行方向に対して凸形状と凹形状が交互に配置された波型形状となっている端部において、車両進行方向側面から見た断面が直線的になるような覆いを設置することで鉄道車両の双方向運転に対応した遮音壁自体の空力騒音が小さな遮音壁を製作することができる。
Furthermore, in the sound insulation walls of the current collector installed on both sides with respect to the vehicle traveling direction of the current collector mounted on the railway vehicle, the shape seen from the side of the vehicle traveling direction at the front end with respect to the vehicle traveling direction is Railroad vehicles by installing a cover that has a wave-like shape in which convex and concave shapes are alternately arranged with respect to the traveling direction, so that the cross section viewed from the side of the traveling direction of the vehicle is linear. It is possible to produce a sound insulation wall with a small aerodynamic noise of the sound insulation wall itself corresponding to the two-way operation.

第１の実施例を備えた集電装置の正面図である。It is a front view of the current collector provided with the 1st example. 第２の実施例を備えた集電装置の正面図である。It is a front view of the current collector provided with the 2nd example. 第３の実施例を備えた集電装置の正面図である。It is a front view of the current collector provided with the 3rd example. 一般的な集電装置の正面図である。It is a front view of a common current collector. 第４の実施例を備えた集電装置の側面図である。It is a side view of the current collector provided with the 4th example. 第５の実施例を備えた集電装置の側面図である。It is a side view of the current collector provided with the 5th example. 一般的な集電装置の側面図である。It is a side view of a common current collector. 鉄道車両の騒音測定点を示す鉄道車両の正面図である。It is a front view of a railway vehicle which shows the noise measurement point of a railway vehicle. 一般的な自動車用防音壁の正面図である。It is a front view of a general automobile soundproof wall. 集電装置の騒音源を示す集電装置の正面図である。It is a front view of the current collector showing a noise source of the current collector. 自動車の騒音源および伝播経路を示す正面図である。It is a front view which shows the noise source and propagation path of a motor vehicle.

符号の説明Explanation of symbols

１…集電装置の遮音壁、２…車体、１１…集電用舟体、１２…ホーン、１３…アーム、１４…集電装置の台枠、１５…絶縁碍子、２１…防音壁、２２…自動車、２３…地面、
２４…レール、３１…騒音観測点、３２…舟体周りの騒音源、３３…台枠および絶縁碍子周りの騒音源、３４…騒音の伝播経路、３５…集電舟体中心と騒音観測点を結んだ直線、３６…自動車の騒音源、４１…車両の設置限界を示す線、５１…車両進行方向、６１…波型端部形状、６２…波型端部形状の直線状覆い。

DESCRIPTION OF SYMBOLS 1 ... Sound insulation wall of current collector, 2 ... Vehicle body, 11 ... Current collector hull, 12 ... Horn, 13 ... Arm, 14 ... Base frame of current collector, 15 ... Insulator, 21 ... Sound barrier, 22 ... Automobile , 23 ... the ground,
24 ... Rail, 31 ... Noise observation point, 32 ... Noise source around the hull, 33 ... Noise source around the frame and insulator, 34 ... Noise propagation path, 35 ... Current collector boat body center and noise observation point Connected straight line, 36 ... Noise source of automobile, 41 ... Line indicating vehicle installation limit, 51 ... Vehicle traveling direction, 61 ... Corrugated end shape, 62 ... Corrugated end shape linear covering.

Claims (2)

鉄道車両の上部に搭載された集電装置を前記鉄道車両の進行方向に対して両側を覆うように設けられた鉄道車両の遮音壁において、
前記鉄道車両の進行方向から見た前記遮音壁の断面形状が、上部では高さが高くなるにつれ前記鉄道車両の中心部から離れる方向に向かって広がる形状であり、下部では高さが低くなるにつれ前記鉄道車両の中心部から離れる方向に向かって広がる形状であることを特徴とする鉄道車両の遮音壁。 In the sound insulation wall of the railway vehicle provided to cover both sides of the current collector mounted on the upper part of the railway vehicle with respect to the traveling direction of the railway vehicle ,
The cross-sectional shape of the sound insulation wall viewed from the traveling direction of the railway vehicle is a shape that widens toward the direction away from the center of the railway vehicle as the height increases at the upper part, and as the height decreases at the lower part, A sound insulation wall for a railway vehicle characterized by having a shape that widens in a direction away from the center of the railway vehicle. 請求項１に記載の鉄道車両の遮音壁において、
前記鉄道車両の進行方向に対して前側または後側の少なくとも一方の端部を側面から見た形状が凸形状と凹形状が交互に配置された波型形状となっていることを特徴とする鉄道車両の遮音壁。 In the sound insulation wall of the railway vehicle according to claim 1,
The railway characterized in that at least one end portion of the front side or the rear side with respect to the traveling direction of the railway vehicle is a corrugated shape in which convex and concave shapes are alternately arranged. Noise barrier for vehicles.
JP2005373729A 2005-12-27 2005-12-27 Noise barrier for railway vehicles Active JP4613815B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005373729A JP4613815B2 (en) 2005-12-27 2005-12-27 Noise barrier for railway vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005373729A JP4613815B2 (en) 2005-12-27 2005-12-27 Noise barrier for railway vehicles

Publications (2)

Publication Number Publication Date
JP2007176192A JP2007176192A (en) 2007-07-12
JP4613815B2 true JP4613815B2 (en) 2011-01-19

Family

ID=38301811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005373729A Active JP4613815B2 (en) 2005-12-27 2005-12-27 Noise barrier for railway vehicles

Country Status (1)

Country Link
JP (1) JP4613815B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5189374B2 (en) * 2008-01-31 2013-04-24 株式会社日立製作所 Sound insulation device for moving vehicles
JP6142065B1 (en) * 2016-10-11 2017-06-07 一夫 有▲吉▼ Noise and side wind pressure prevention device when traveling on high-speed railway vehicles
JP6343083B1 (en) * 2017-09-14 2018-06-13 一夫 有▲吉▼ High-speed railway vehicle with reduced wind resistance and noise, and increased speed

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52159507U (en) * 1976-05-28 1977-12-03
JPS584667A (en) * 1981-06-29 1983-01-11 株式会社ブリヂストン Reducer for noise of pantograph
JPS6180175U (en) * 1984-11-01 1986-05-28
JPS63125681U (en) * 1987-02-10 1988-08-16
JPH0480203U (en) * 1990-11-20 1992-07-13
JPH0898306A (en) * 1994-09-16 1996-04-12 West Japan Railway Co Windbreaking cover of current collector
JPH1066202A (en) * 1996-08-12 1998-03-06 Central Japan Railway Co Protruding part cover for railway car
JP2005324762A (en) * 2004-05-12 2005-11-24 Mitsuhiro Kawatsu REDUCTION METHOD OF cd VALUE
JP2006159938A (en) * 2004-12-02 2006-06-22 East Japan Railway Co Sound insulating board of current collector for vehicle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52159507U (en) * 1976-05-28 1977-12-03
JPS584667A (en) * 1981-06-29 1983-01-11 株式会社ブリヂストン Reducer for noise of pantograph
JPS6180175U (en) * 1984-11-01 1986-05-28
JPS63125681U (en) * 1987-02-10 1988-08-16
JPH0480203U (en) * 1990-11-20 1992-07-13
JPH0898306A (en) * 1994-09-16 1996-04-12 West Japan Railway Co Windbreaking cover of current collector
JPH1066202A (en) * 1996-08-12 1998-03-06 Central Japan Railway Co Protruding part cover for railway car
JP2005324762A (en) * 2004-05-12 2005-11-24 Mitsuhiro Kawatsu REDUCTION METHOD OF cd VALUE
JP2006159938A (en) * 2004-12-02 2006-06-22 East Japan Railway Co Sound insulating board of current collector for vehicle

Also Published As

Publication number Publication date
JP2007176192A (en) 2007-07-12

Similar Documents

Publication Publication Date Title
JP4613815B2 (en) Noise barrier for railway vehicles
JP6094852B2 (en) High voltage cable routing structure for vehicles
JP6185219B2 (en) Sound insulation device for moving vehicles
JP5189374B2 (en) Sound insulation device for moving vehicles
JP3374469B2 (en) Current collector
JPH06245309A (en) Current collector and vehicle mounting the same
JP3069828B2 (en) Windproof cover of current collector
JP3630419B1 (en) Windshield cover device for current collector in vehicle
JP7323348B2 (en) Current collector for railway vehicles
JP5827744B2 (en) Pantograph device
JP2006159938A (en) Sound insulating board of current collector for vehicle
JPH0577729A (en) Noise insulating device for rolling stock car
JPH0742163Y2 (en) Noise prevention structure for train rooftop equipment
JP2021000943A (en) Noise insulating device for railway vehicle
JP6931725B2 (en) Current collection system
JP4329051B2 (en) Windproof cover for current collector
JP2009165211A (en) Noise reduction device of vehicle
JP3873184B2 (en) Windproof cover for current collector
JP4475535B2 (en) Noise suppression structure for current collector
JP4997296B2 (en) Rectifying cover
JP6208454B2 (en) Railway vehicle current collector
JP2877121B2 (en) Current collector sound insulation device
JP2018129880A (en) Noise suppression structure of current collection equipment and current collection system
JP2589839Y2 (en) Pantograph windproof cover and aerodynamic noise reduction structure
JP6571387B2 (en) Current collector boat and current collector

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080515

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100615

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100617

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100729

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100921

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20101004

R151 Written notification of patent or utility model registration

Ref document number: 4613815

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131029

Year of fee payment: 3