JP4578985B2 - Extruded hollow profile and railway vehicle structure formed by the profile - Google Patents

Extruded hollow profile and railway vehicle structure formed by the profile Download PDF

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JP4578985B2
JP4578985B2 JP2005004897A JP2005004897A JP4578985B2 JP 4578985 B2 JP4578985 B2 JP 4578985B2 JP 2005004897 A JP2005004897 A JP 2005004897A JP 2005004897 A JP2005004897 A JP 2005004897A JP 4578985 B2 JP4578985 B2 JP 4578985B2
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face plate
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JP2006192995A (en
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孝光 佐々
康士 酒井
稔 田山
慶知 渡邉
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Nippon Sharyo Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
    • B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding

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Description

本発明は、押出し中空形材及びその形材を接合して形成された鉄道車両構体に関し、特に押出し中空形材同士を接合する継ぎ手部分の軽減によって軽量化を図った押出し中空形材及び鉄道車両構体に関する。 The present invention relates to a railway car body structure which is formed by joining extruded hollow shape member and profiles, extruded hollow shape member and railcar reduce the weight in particular by the reduction of joint portions joining the extruded hollow shape members together Concerning structure.

鉄道車両構体は、側構体や屋根構体にアルミからなる押出し中空形材が使用され、そうした従来例としては例えば特開平１１−３２０１３１号公報に記載されたものを挙げることができる。図２は、当該公報に記載された鉄道車両構体を示した斜視図である。鉄道車両構体１００は、図示するように側構体１０１、屋根構体１０２、床構体１０３および長手方向の両端に設けられた妻構体１０４から構成される。そして、そのうち側構体１０１や屋根構体１０２には長尺な押出し中空形材１１０が幅方向に複数並べられて接合されている。この押出し中空形材１１０や、以下に説明する各押出し中空形材は、例えばアルミ合金によって押出し成形されたものである。 As the railway vehicle structure, an extruded hollow member made of aluminum is used for the side structure and the roof structure, and examples of such a conventional structure include those described in JP-A-11-320131. FIG. 2 is a perspective view showing the railway vehicle structure described in the publication. As shown in the figure, the railway vehicle structure 100 includes a side structure 101, a roof structure 102, a floor structure 103, and wife structures 104 provided at both ends in the longitudinal direction. Then it is joined ordered plurality elongated extruded hollow shape member 110 in the width direction in them the side structure 101 and the roof structure 102. The extruded hollow shape member 110 and each extruded hollow shape member described below are extruded from, for example, an aluminum alloy.

次に、押出し中空形材１１０同士の継ぎ手部分は、図３に示すように構成されている。押出し中空形材１１０は、図面上方の上面板１１１と図面下方の下面板１１２とが斜面板１１３によって連結され、長手方向に見て断面がトラス状に構成されている。そして、継ぎ手部は、上面板１１１と下面板１１２との幅方向（図面左右方向）端部に厚肉部１２０が形成され、突き当てられた状態で台形になるよう形成されている。図面に示されている幅方向の右側端部は自由端になって、そこに当接する左側端部には上下に突出片１１５と、それを連結するように支持板１１６が形成されている。そして、突出片１１５を差し込むようにして押出し中空形材１１０同士を幅方向で突合せた後、接合用工具２００が接合部に押し当てられて摩擦撹拌接合が行われる。 Next, the joint portion between the extruded hollow shape member 110 is configured as shown in FIG. In the extruded hollow member 110, an upper surface plate 111 at the upper side of the drawing and a lower surface plate 112 at the lower side of the drawing are connected by an inclined plate 113, and the cross section is configured in a truss shape when viewed in the longitudinal direction. The joint portion is formed to have a trapezoidal shape when the thick portion 120 is formed at the end in the width direction (left and right direction in the drawing) between the upper surface plate 111 and the lower surface plate 112. The right end portion in the width direction shown in the drawing is a free end, and a protruding piece 115 and a support plate 116 are formed on the left end portion in contact therewith so as to be connected to each other. After the butted extruded hollow shape member 110 with each other in the width direction so as to insert the protruding piece 115, bonding tool 200 is friction stir welding is performed is pressed against the joint.

一方、こうした鉄道車両構体を構成する押出し中空形材１１０の接合には、摩擦撹拌接合の他、ＭＩＧ溶接やＴＩＧ溶接による接合が行われる場合がある。そこで、図４は、ＭＩＧ溶接によって接合する押出し中空形材であって、その押出し中空形材同士の継ぎ手部分を示した図である。
押出し中空形材１３０は、図面上方の上面板１３１と図面下方の下面板１３２とが斜面板１３３によって連結され、長手方向に見て断面がトラス状に構成されている。そして、左右の幅方向両端には上面板１３１と下面板１３２とが、直交する支持板１３５によって連結され、そこから更に左右幅方向に延長して突出片１３７，１３８が形成されている。そして、この突出片１３７，１３８が図示するように嵌り合い、それぞれ上面板１３１と下面板１３２との面上にできた開先１３９にＭＩＧ溶接が施される。
特開平１１−３２０１３１号公報（第２頁、図１、図４） On the other hand, in addition to friction stir welding, the extruded hollow shape member 110 constituting such a railway vehicle structure may be joined by MIG welding or TIG welding. Therefore, FIG. 4 is an extruded hollow shape member joined by MIG welding, and shows a joint portion between the extruded hollow shape members.
In the extruded hollow member 130, an upper surface plate 131 in the upper part of the drawing and a lower surface plate 132 in the lower part of the drawing are connected by an inclined plate 133, and the cross section is formed in a truss shape when viewed in the longitudinal direction. And the upper surface board 131 and the lower surface board 132 are connected with the orthogonal | vertical support plate 135 at the both ends of the left-right width direction, and it further extends in the left-right width direction from there, and the protrusion pieces 137 and 138 are formed. The projecting pieces 137 and 138 are fitted as shown in the figure, and MIG welding is performed on the grooves 139 formed on the surfaces of the upper surface plate 131 and the lower surface plate 132, respectively.
Japanese Patent Laid-Open No. 11-320131 (second page, FIGS. 1 and 4)

しかしながら、従来のこうした接合継ぎ手構造からなる押出し中空形材では、継ぎ手部分の重量が重くなってしまい、そのため押出し中空形材自身の重量、更にはその押出し中空形材からなる鉄道車両構体が重くなってしまい、高速化が進む鉄道車両において好ましいものではなかった。鉄道車両構体１００は、図２に示すように側構体１０１及び屋根構体１０２において約２０枚の押出し中空形材１１０又は１３０が接合されて構成されている。継ぎ手箇所もそれに応じた数だけ存在し、しかも車体全長にわたっているため鉄道車両構体の重量増への影響が大きい。従って、継ぎ手部分の軽量化が鉄道車両構体全体の軽量化に大きく寄与するものと考えられる。しかしながらその一方で、軽量化だけを追求した継ぎ手構造であっては剛性低下を招いたり、その他、型抜きして製造する製造性に問題があるようなものでは採用することができない。 However, in the conventional extruded hollow member having such a jointed joint structure, the weight of the joint portion becomes heavy, and therefore the weight of the extruded hollow member itself, and further, the railway vehicle structure made of the extruded hollow member becomes heavy. Therefore, it is not preferable for a railway vehicle whose speed is increasing. Railway car body structure 100 is about 20 sheets of extruded hollow shape member 110 or 130 in the side structure 101 and the roof structure 102 as shown in FIG. 2 is constructed by bonding. There number corresponding thereto also adoptive hand position, yet a large effect on the weight gain of the railway car body structure because the over the full length body. Therefore, it is considered that the weight reduction of the joint part greatly contributes to the weight reduction of the entire railway vehicle structure. However, on the other hand, a joint structure that pursues only weight reduction cannot be adopted if it causes a reduction in rigidity or has a problem in manufacturability that is produced by die cutting.

そこで、本発明は、係る課題を解決すべく、軽量な継ぎ手構造を有する押出し中空形材及びその形材によって形成された鉄道車両構体を提供することを目的とする。 Accordingly, an object of the present invention is to provide an extruded hollow member having a lightweight joint structure and a railway vehicle structure formed by the member in order to solve the problem.

本発明に係る押出し中空形材は、第１面板と第２面板との間を複数の斜面板にてトラス状に連結するとともに、幅方向両側部にそれぞれ継ぎ手構造を有する押出し中空形材同士を幅方向に並べて接合することにより鉄道車両構体を形成するものであり、前記継ぎ手構造は、前記幅方向一側部が、前記斜面板の１つが前記第１面板に交わる端部位置と第２面板の端部との間が開いた状態の開状端部に、前記幅方向他側部が、前記斜面板の１つとは別の斜面板が前記第１面板に交わる端部位置と前記第２面板の端部との間を前記第１面板と前記第２面板とに直交する支持板にて連結して閉じた状態の閉状端部にそれぞれ形成し、前記開状端部の前記第２面板に肉厚の嵌合部を形成するとともに前記第１面板と前記斜面板との接続位置から肉厚の嵌合部を前記第２面板の嵌合部よりも延出し、前記閉状端部の前記第１面板と前記斜面板と前記支持板との接続位置に段差部を形成し、前記開状端部の第１面板の嵌合部が差し込まれるように、前記支持板を前記段差部に向けて略直交方向に折り曲げた嵌合部を形成し、前記閉状端部の前記支持板から前記開状端部の第２面板の嵌合部が差し込まれる嵌合突起を突設し、前記押出し中空形材同士を幅方向に並べて一方の開状端部に他方の閉状端部を差し込むようにして嵌合させた場合に、接合箇所となる前記第１面板同士及び第２面板同士とが突き当てられて面一となるとともに、第１面板同士の突き当て部分が第２面板同士の突き当て部分よりも閉状端部側にずれるようにした継ぎ手構造を有することを特徴とする。 The extruded hollow profile according to the present invention connects extruded hollow profiles between the first face plate and the second face plate in a truss shape with a plurality of inclined plates and has joint structures on both sides in the width direction. A railcar structure is formed by joining side by side in the width direction , wherein the joint structure has one side portion in the width direction, an end position where one of the slope plates intersects the first face plate, and a second face plate. The second end in the state in which the gap between the other end in the width direction and the second position of the second face plate and the second face plate intersect with the first face plate and the second position of the second face plate. The first face plate and the second face plate are connected to each other by a support plate orthogonal to the first face plate and the second face plate to form a closed end portion in a closed state, and the second face plate of the open end portion is formed. A thick fitting portion is formed at the connection position between the first face plate and the slope plate. Extending from the fitting portion of the second face plate, forming a stepped portion at the connection position of the first face plate, the slope plate, and the support plate of the closed end portion, A fitting portion is formed by bending the support plate in a substantially orthogonal direction toward the stepped portion so that the fitting portion of the single face plate is inserted, and from the support plate of the closed end portion to the open end portion. A fitting protrusion into which the fitting portion of the second face plate is inserted is projected, and the extruded hollow shapes are arranged in the width direction and fitted so that the other closed end is inserted into one open end. In this case, the first face plates and the second face plates to be joined are abutted to be flush with each other, and the abutting portion between the first face plates is a closed end rather than the abutting portion between the second face plates. It has a joint structure that is shifted to the side of the part .

一方、本発明に係る鉄道車両構体は、第１面板と第２面板との間を複数の斜面板にてトラス状に連結するとともに、幅方向両側部にそれぞれ継ぎ手構造を有する押出し中空形材同士を幅方向に並べて接合することにより形成されたものであり、前記継ぎ手構造は、一方の前記押出し中空形材の幅方向側部に、前記斜面板の１つが前記第１面板に交わる端部位置と第２面板の端部との間が開いた状態の開状端部が形成され、他方の前記押出し中空形材の幅方向側部に、前記斜面板の１つが前記第１面板に交わる端部位置と前記第２面板の端部との間を前記第１面板と前記第２面板とに直交する支持板にて連結して閉じた状態の閉状端部に形成されたものであり、前記開状端部の前記第２面板に肉厚の嵌合部を形成するとともに前記第１面板と前記斜面板との接続位置から肉厚の嵌合部を前記第２面板の嵌合部よりも延出し、前記閉状端部の前記第１面板と前記斜面板と前記支持板との接続位置に段差部を形成し、前記開状端部の第１面板の嵌合部が差し込まれるように、前記支持板を前記段差部に向けて略直交方向に折り曲げた嵌合部を形成し、前記閉状端部の前記支持板から前記開状端部の第２面板の嵌合部が差し込まれる嵌合突起を突設し、前記押出し中空形材同士を幅方向に並べて一方の開状端部に他方の閉状端部を差し込むようにして嵌合させた場合に、接合箇所となる前記第１面板同士及び第２面板同士とが突き当てられて面一となるとともに、第１面板同士の突き当て部分が第２面板同士の突き当て部分よりも閉状端部側にずれるようにした継ぎ手構造の接合により形成されたものであることを特徴とする。
また、本発明に係る鉄道車両構体は、前記第１面板同士及び第２面板同士の接合には、レーザ溶接またはレーザとＭＩＧ溶接またはＴＩＧ溶接とを組み合わせたハイブリッド溶接が行われるようにしたものであることが好ましい。 On the other hand, the railway vehicle structure according to the present invention connects extruded first and second face plates in a truss shape with a plurality of inclined plates and has extruded joints having joint structures on both sides in the width direction. The joint structure is formed by joining one side of the sloped plate to the first face plate on the side in the width direction of one of the extruded hollow profiles. And an end where one of the inclined plates intersects the first face plate is formed on the other side in the width direction of the extruded hollow profile. Between the part position and the end of the second face plate is connected to a support plate orthogonal to the first face plate and the second face plate, and is formed in a closed end. A thick fitting portion is formed on the second face plate of the open end, and the first face plate and the front A thick fitting portion extends from the connection position with the slope plate than the fitting portion of the second face plate, and a step is formed at the connection position between the first face plate, the slope plate and the support plate at the closed end. Forming a fitting portion in which the support plate is bent in a substantially orthogonal direction toward the stepped portion so that the fitting portion of the first face plate of the open end portion is inserted, and the closed end A fitting projection into which the fitting part of the second face plate of the open end is inserted from the support plate of the part, and the extruded hollow members are arranged in the width direction to the other open end When the closed end portions are inserted and fitted together, the first face plates and the second face plates that are the joining portions are abutted to be flush with each other, and the abutting portion between the first face plates is Formed by joining a joint structure that is shifted to the closed end side from the abutting part of the second face plates Characterized in that the those.
In the railway vehicle structure according to the present invention, laser welding or hybrid welding in which laser and MIG welding or TIG welding are combined is performed for joining the first face plates to each other and the second face plates. Preferably there is.

よって、本発明に係る押出し中空形材及びその形材によって形成された鉄道車両構体によれば、継ぎ手部分には閉状端部の支持板のみが第１面板と第２面板との間に設けられているだけなので、その点で重量を軽減させることができた。更に、例えば、開状端部の第１面板の内側に当接する嵌合部から支持板が連続するように形成して、第１面板同士の突き当て部分と第２面板同士の突き当て部分との位置がずれるようにしたことにより、嵌合部及び支持板によって閉じられた空間の断面積が大きくなり、型抜きしやすいように隅部が広く形成されるため肉厚になるような部分がなくなり、その点でも重量を軽減させることができた。 Therefore, according to the extruded hollow member and the railcar structure formed by the member according to the present invention, only the support plate of the closed end is provided between the first face plate and the second face plate at the joint portion. I was able to reduce the weight at that point. Furthermore, for example, the support plate is formed so as to continue from the fitting portion that contacts the inside of the first face plate of the open end, and the abutment portion between the first face plates and the abutment portion between the second face plates, Since the position of is shifted, the cross-sectional area of the space closed by the fitting part and the support plate is increased, and the corner part is formed wide so that it can be easily removed from the mold. In that respect, the weight could be reduced.

次に、本発明に係る押出し中空形材及びその形材によって形成された鉄道車両構体について、その一実施形態を図面を参照しながら以下に説明する。本実施形態の鉄道車両構体は、前記従来例で記載した図２に示すものと同様、側構体１０１、屋根構体１０２、床構体１０３、長手方向の端部の妻構体１０４から構成されている。そして、そのうちの側構体１０１及び屋根構体１０２は、長尺な押出し中空形材が幅方向に複数並べられ、継ぎ手部を突き合わせて接合したものである。 Next, an embodiment of an extruded hollow profile according to the present invention and a railway vehicle structure formed by the profile will be described below with reference to the drawings. The railcar structure of the present embodiment is composed of a side structure 101, a roof structure 102, a floor structure 103, and a wife structure 104 at the end in the longitudinal direction, similar to the structure shown in FIG. The side structures 101 and the roof structure 102 of which are those long extruded hollow shape members are arranged more in the width direction, and joined by abutting the joint portion.

ここで、図１は、鉄道車両構体を構成する押出し中空形材について、その継ぎ手部を示した図である。押出し中空形材１（１Ｒ，１Ｌ）は、図面上方の上面板１１と図面下方の下面板１２とが平行に配置され、それらに斜面板１３が複数連結されトラス構造の断面をなすものである。そして、継ぎ手部は、図面右側の押出し中空形材１（以下、押出し中空形材１Ｒとする）の左側端部が、図面左側の押出し中空形材１（以下、押出し中空形材１Ｌとする）の右側端部に嵌め込まれるようにして連結されている。 Here, FIG. 1 is a view showing a joint portion of the extruded hollow member constituting the railway vehicle structure. In the extruded hollow member 1 (1R, 1L), an upper surface plate 11 at the upper side of the drawing and a lower surface plate 12 at the lower side of the drawing are arranged in parallel, and a plurality of slope plates 13 are connected to them to form a cross section of the truss structure. . The left end of the extruded hollow profile 1 on the right side of the drawing (hereinafter referred to as extruded hollow profile 1R) is the extruded hollow profile 1 on the left side of the drawing (hereinafter referred to as extruded hollow profile 1L). It is connected so that it may be fitted to the right end of the.

押出し中空形材１の図面右側端部は、押出し中空形材１Ｌに示すように、斜面板１３を超えて上面板１１と下面板１２とが延長して突き出され、押出し中空形材１が重なる嵌合部１１ａ，１２ａが他の部分よりも肉厚に形成されている。また、本実施形態では、押出し中空形材１の右側端部は、上面板１１と下面板１２とがフリーになって開いた状態の開状端部が形成され、しかも下面板１２が上面板１１よりも幅方向（図面右側方向）に短く形成されている。 As shown in the extruded hollow profile 1L, the right end of the extruded hollow profile 1 extends beyond the slope plate 13 so that the upper surface plate 11 and the lower surface plate 12 extend and the extruded hollow profile 1 overlaps. The fitting portions 11a and 12a are formed thicker than the other portions. Further, in the present embodiment, the right end portion of the extruded hollow member 1 is formed with an open end portion in a state where the upper surface plate 11 and the lower surface plate 12 are open and the lower surface plate 12 is the upper surface plate. It is shorter than 11 in the width direction (right side of the drawing).

一方、押出し中空形材１の図面左側端部は、押出し中空形材１Ｒに示すように、斜面板１３を超えて下面板１２が延長して突き出され、上面板１１は斜面板１３の位置で途切れ段差になった嵌合部１４が形成されている。そして、上面板１１及び下面板１２に直交する支持板１５が嵌合部１４から折れるようにして形成され、押出し中空形材１の左側端部を閉じた閉状端部を形成している。また、その支持板１５には、上方の嵌合部１４とともに押出し中空形材１の左側端部に嵌り込むように嵌合突起１６が形成されている。 On the other hand, the left side of the drawing end of the extruded hollow profile 1, as shown in extruded hollow profile 1R, lower plate 12 is protruded to extend beyond the slope plate 13, the top plate 11 at the position of the slope plate 13 A fitting portion 14 having an intermittent step is formed. And the support plate 15 orthogonal to the upper surface board 11 and the lower surface board 12 is formed so that it may fold from the fitting part 14, and the closed end part which closed the left side edge part of the extrusion hollow shape member 1 is formed. Further, the support plate 15 is formed with a fitting projection 16 so as to be fitted into the left end portion of the extruded hollow member 1 together with the upper fitting portion 14.

押出し中空形材１には、こうしてその右側及び左側端部に継ぎ手構造が形成され、押出し中空形材１同士が図示するように嵌め合わされて接合される。すなわち、押出し中空形材１Ｌの開状端部に押出し中空形材１Ｒの閉状端部が嵌め合わされるのであるが、具体的には、押出し中空形材１Ｌの嵌合部１１ａ，１２ａの間に押出し中空形材１Ｒの嵌合部１４及び嵌合突起１６が差し込まれ、嵌合部がそれぞれ上下方向に重ね合わされる。そして、上面板１１同士と下面板１２同士とが突き当てられて面一になり、長手方向に連続する突き当て部分２１，２２が溶接される。本実施形態では、レーザ溶接や、レーザとＭＩＧ溶接またはＴＩＧ溶接とを組み合わせたハイブリッド溶接が行われる。 The extruded hollow profile 1 is thus formed with a joint structure at the right and left ends thereof, and the extruded hollow profiles 1 are fitted together and joined as shown. That is, although the閉状end of the extruded hollow profile 1R is fitted into the opening shaped end of the extruded hollow shape member 1L, specifically, the fitting portion 11a of the extruded hollow shape member 1L, between 12a The fitting portion 14 and the fitting protrusion 16 of the extruded hollow shape member 1R are inserted, and the fitting portions are overlapped in the vertical direction. The upper surface plates 11 and the lower surface plates 12 are abutted to be flush with each other, and the abutting portions 21 and 22 continuous in the longitudinal direction are welded. In the present embodiment, laser welding or hybrid welding combining laser and MIG welding or TIG welding is performed.

ハイブリッド溶接は、例えばＣＯ2 （炭酸ガス）レーザによるレーザ光が伝送ミラー等により伝送され、集光レンズによって集光され突き当て部分２１，２２に照射される。その時、接合方向の前方からレーザ用シールドガスノズルを使用してレーザ用シールドガスが供給され、また、後方からは例えばＭＩＧトーチ６によってＭＩＧアークが供給される。なお、ハイブリッド溶接を行う場合には、上面板１１同士および下面板１２同士の突き当て部分２１，２２には、図４に示す開先１３９と同様に開先が形成される。 Hybrid welding, for example CO 2 laser light by (carbon dioxide) laser is transmitted through the transmission mirror or the like is irradiated to the portion 21, 22 abut against condensed by the condensing lens. At that time, a laser shielding gas is supplied from the front in the joining direction using a laser shielding gas nozzle, and an MIG arc is supplied from the rear by, for example, the MIG torch 6. In the case of performing hybrid welding, a groove is formed in the abutting portions 21 and 22 between the upper surface plates 11 and the lower surface plates 12 in the same manner as the groove 139 shown in FIG.

ところで、本実施形態では、従来のものに比べて次のような点で押出し中空形材１の継ぎ手部分の重量を削減させ、その押出し中空形材１が複数枚接合されてなる鉄道車両構体の軽量化を図ることができた。ここで、図５は、図３に示した押出し中空形材に類似する摩擦撹拌接合に対応した押出し中空形材であって、比較実験に使用する本出願人が提案するものである。そこで、その図５と図４とに示した従来の押出し中空形材の継ぎ手部と、図１に示す本実施形態の継ぎ手部について比較を行った。 Incidentally, in this embodiment, compared to the conventional by reducing the weight of the joint portion of the extruded hollow profile 1 in a point as follows: the railway car body structure in which the extruded hollow profile 1 is formed by a plurality bonded It was possible to reduce the weight. Here, FIG. 5 is a extruded hollow profile corresponding to the friction stir welding that is similar to the extruded hollow profile shown in FIG. 3, and proposes the present applicant used in Comparative Experiment. Therefore, a comparison was made between the joint portion of the conventional extruded hollow member shown in FIGS. 5 and 4 and the joint portion of the present embodiment shown in FIG.

先ず、図４に示した押出し中空形材１３０と比較すると、従来、継ぎ手部分には支持板１３５が２本存在していた。これに対して本実施形態では、一方の押出し中空形材１Ｒに形成された支持板１５の１本だけであるため、この点で軽量化を図ることができた。
また、ＭＩＧ溶接は入熱量が大きいため熱影響を受ける突出片１３７，１３８の肉厚が厚く、更にその周りにも比較的広く熱影響を受けるので、広範囲にわたって肉厚に形成される。これに対して本実施形態では、レーザ溶接或いはハイブリッド溶接で接合を行うものであるため、嵌合部１１ａ，１２ａ，１４及び嵌合突起１６の肉厚は比較的薄く、その周りも肉厚にする必要がない。従って、この点でも軽量化を図ることができた。 First, in comparison with the extruded hollow member 130 shown in FIG. 4, there are conventionally two support plates 135 in the joint portion. On the other hand, in this embodiment, since there is only one support plate 15 formed on one extruded hollow shape member 1R, weight reduction can be achieved in this respect.
Further, in MIG welding, since the heat input is large, the thickness of the protruding pieces 137 and 138 that are affected by heat is large, and the surroundings are also affected by heat relatively widely, so that they are formed over a wide range. On the other hand, in this embodiment, since it joins by laser welding or hybrid welding, the thickness of fitting part 11a, 12a, 14 and the fitting protrusion 16 is comparatively thin, The circumference | surroundings are also thick. There is no need to do . Accordingly, the weight can also be reduced in this respect.

一方の図５に示す押出し中空形材１５０は、上面板１５１と下面板１５２とが複数の斜面板１５３によって連結されトラス状に形成されている。そして、その押出し中空形材１５０同士の継ぎ手部は、上面板１５１と下面板１５２とが開いた状態の図面左側の端部に、閉じた状態の図面右側の端部が嵌り込むようになっている。 On the other hand, an extruded hollow member 150 shown in FIG. 5 is formed in a truss shape in which an upper plate 151 and a lower plate 152 are connected by a plurality of inclined plates 153. And the joint part of the extruded hollow shape members 150 is adapted to fit the end part on the right side of the drawing in the closed state into the end part on the left side of the drawing in the state where the upper surface plate 151 and the lower surface plate 152 are open. Yes.

こうして押出し中空形材１５０は、本実施形態の押出し中空形材１と同様に継ぎ手部分には１本の支持板１５４が存在するのみである。しかし、押出し中空形材１５０は、摩擦撹拌接合時に加わる荷重を受けることができるように支持板１５４の上下端には上面板１５１及び下面板１５２にかけて十分な肉厚の荷重受け部１５５，１５６が形成されている。その際、特に支持板１５４で閉じられた閉塞部１５７の成形時の型抜きができるように、Ｒ部分の曲率半径を大きくしなければならず更に荷重受け部１５５が厚肉になって重量を増加させてしまっていた。 In this way, the extruded hollow member 150 has only one support plate 154 at the joint portion, like the extruded hollow member 1 of the present embodiment. However, the extruded hollow member 150 has load receiving portions 155 and 156 having sufficient thickness over the upper surface plate 151 and the lower surface plate 152 at the upper and lower ends of the support plate 154 so that the load applied during the friction stir welding can be received. Is formed. At that time, in particular, the radius of curvature of the R portion must be increased so that the closed portion 157 closed by the support plate 154 can be punched, and the load receiving portion 155 becomes thicker and the weight is increased. It has been increased.

これに対して本実施形態の押出し中空形材１では、レーザ溶接やハイブリッド溶接を行うため肉厚を薄くすることにより、この点で軽量化を図ることができた。また、本実施形態の押出し中空形材１では、上面板１１同士と下面板１２同士の突き当て部分２１，２２が上下でずれた位置に設けられている。すなわち、支持板１５の位置を嵌合部１４によって上面板１１側の突き当て部分２１からずらしている。これにより、嵌合部１４及び支持板１５によって閉じられた閉塞部１７の断面積が大きくなり、型抜きが容易に行うことができるようになった。またその際、斜面板１３と支持板１５との間に嵌合部１４が設けられ、隅部１７ａが広く形成されているため、押出し中空形材１５０のＲ部分のように肉厚にする必要がないため、この点でも軽量化を図ることができた。 In contrast, in the extruded hollow member 1 of the present embodiment, laser welding and hybrid welding are performed, so that the thickness can be reduced by reducing the thickness. Moreover, in the extruded hollow shape member 1 of this embodiment, the abutting portions 21 and 22 between the upper surface plates 11 and the lower surface plates 12 are provided at positions shifted vertically. That is, the position of the support plate 15 is shifted by the fitting portion 14 from the abutting portion 21 on the upper surface plate 11 side. As a result, the cross-sectional area of the closing portion 17 closed by the fitting portion 14 and the support plate 15 is increased, and the die can be easily removed. At that time, since the fitting portion 14 is provided between the slope plate 13 and the support plate 15 and the corner portion 17a is widely formed, it is necessary to make it thick like the R portion of the extruded hollow shape 150. In this respect, the weight can be reduced.

以上の点から本実施形態の押出し中空形材１と従来の押出し中空形材１３０，１５０について、図示した継ぎ手部分の接合方向にみた単位長さ当たりの重量を比較した。すると、図１に示す本実施形態の押出し中空形材１が１．５８ｋｇ／ｍであるのに対し、図４に示した押出し中空形材１３０は１．７６ｋｇ／ｍであり、約１０パーセント軽減することができた。そして、図５に示した押出し中空形材１５０は１．７０ｋｇ／ｍであって、これに対しては約７パーセント軽減することができた。従って、押出し中空形材１を使用して形成された鉄道車両構体は、従来のものと比べた約７〜１０パーセントの軽減は構体全体として大幅な軽量化となった。 For extruded hollow profile 1 and the conventional extruded hollow shape members 130, 150 of the present embodiment from the above points, and comparing the weights per unit length viewed in the welding direction of the joint portion shown. Then, the extruded hollow member 1 of this embodiment shown in FIG. 1 is 1.58 kg / m, whereas the extruded hollow member 130 shown in FIG. 4 is 1.76 kg / m, which is reduced by about 10%. We were able to. The extruded hollow shape member 150 shown in FIG. 5 was 1.70 kg / m, which was reduced by about 7%. Therefore, in the railway vehicle structure formed by using the extruded hollow member 1, the reduction of about 7 to 10% compared to the conventional structure is a significant weight reduction as a whole structure.

以上、本発明に係る押出し中空形材及びその形材によって形成された鉄道車両構体の一実施形態について説明したが、本発明はこれに限定されることなく、その趣旨を逸脱しない範囲で様々な変更が可能である。
前記実施形態で示した押出し中空形材１は、幅方向の一方を開状端部とし、他方が閉状端部として形成されたものであり、鉄道車両構体の側構体などはこの一種類の押出し中空形材１で構成されていが、例えば、幅方向の両端が開状端部である押出し中空形材と、両端が閉状端部である押出し中空形材とを形成し、この二種類の押出し中空形材を交互に接合するようにしてもよい。 As mentioned above, although one embodiment of the extruded hollow shape material and the railway vehicle structure formed by the shape material according to the present invention has been described, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention. It can be changed.
Extruded hollow profile 1 shown in the above embodiment, the one in the width direction Hirakijo end and the other has been formed as a閉状end, such as the side structure of the railway car body structure is the one type Although consists of the extruded hollow profile 1, for example, to form the extruded hollow profile across the width direction is open shaped end, and a hollow extruded shape member is a both ends閉状end, the two The extruded hollow shapes may be joined alternately.

鉄道車両構体を構成する一実施形態の押出し中空形材を示した図である。It is the figure which showed the extrusion hollow shape material of one Embodiment which comprises a railway vehicle structure. 鉄道車両構体を示した斜視図である。It is the perspective view which showed the railway vehicle structure. 摩擦撹拌接合によって接合する従来の押出し中空形材を示した図である。It is the figure which showed the conventional extruded hollow shape material joined by friction stir welding. ＭＩＧ溶接によって接合する従来の押出し中空形材を示した図である。It is the figure which showed the conventional extrusion hollow shape material joined by MIG welding. 摩擦撹拌接合によって接合する従来における他の押出し中空形材を示した図である。It is the figure which showed the other extruded hollow shape material in the past joined by friction stir welding.

１（１Ｌ，１Ｒ） 押出し中空形材
１１ 上面板
１２ 下面板
１３ 斜面板
１４ 嵌合部
１５ 支持板
１６ 嵌合突起 1 (1L, 1R) Extruded hollow member 11 Upper surface plate 12 Lower surface plate 13 Slope plate 14 Fitting portion 15 Support plate 16 Fitting protrusion

Claims (3)

第１面板と第２面板との間を複数の斜面板にてトラス状に連結するとともに、幅方向両側部にそれぞれ継ぎ手構造を有する押出し中空形材同士を幅方向に並べて接合することにより鉄道車両構体を形成する押出し中空形材において、
前記継ぎ手構造は、前記幅方向一側部が、前記斜面板の１つが前記第１面板に交わる端部位置と第２面板の端部との間が開いた状態の開状端部に、
前記幅方向他側部が、前記斜面板の１つとは別の斜面板が前記第１面板に交わる端部位置と前記第２面板の端部との間を前記第１面板と前記第２面板とに直交する支持板にて連結して閉じた状態の閉状端部にそれぞれ形成し、
前記開状端部の前記第２面板に肉厚の嵌合部を形成するとともに前記第１面板と前記斜面板との接続位置から肉厚の嵌合部を前記第２面板の嵌合部よりも延出し、
前記閉状端部の前記第１面板と前記斜面板と前記支持板との接続位置に段差部を形成し、前記開状端部の第１面板の嵌合部が差し込まれるように、前記支持板を前記段差部に向けて略直交方向に折り曲げた嵌合部を形成し、
前記閉状端部の前記支持板から前記開状端部の第２面板の嵌合部が差し込まれる嵌合突起を突設し、
前記押出し中空形材同士を幅方向に並べて一方の開状端部に他方の閉状端部を差し込むようにして嵌合させた場合に、接合箇所となる前記第１面板同士及び第２面板同士とが突き当てられて面一となるとともに、第１面板同士の突き当て部分が第２面板同士の突き当て部分よりも閉状端部側にずれるようにした継ぎ手構造を有することを特徴とする押出し中空形材。 A railway vehicle by connecting the first face plate and the second face plate in a truss shape with a plurality of inclined plates, and joining extruded hollow shapes having joint structures on both sides in the width direction side by side in the width direction. In the extruded hollow shape forming the structure ,
In the joint structure, the one side portion in the width direction has an open end portion in a state where an end position where one of the slope plates intersects the first face plate and an end portion of the second face plate are open.
The first face plate and the second face plate are arranged between an end position where the other side portion in the width direction intersects the first face plate with a slope plate different from one of the slope plates and the end portion of the second face plate. Are formed on closed end portions that are connected and closed by support plates orthogonal to each other,
A thick fitting portion is formed on the second face plate of the open end portion, and a thick fitting portion is connected to the second face plate from the connection position of the first face plate and the slope plate. Also extended,
The support plate is formed such that a step portion is formed at a connection position of the first face plate, the slope plate, and the support plate of the closed end portion, and a fitting portion of the first face plate of the open end portion is inserted. Forming a fitting portion bent in a substantially orthogonal direction toward the stepped portion,
Protruding a fitting protrusion into which the fitting portion of the second face plate of the open end is inserted from the support plate of the closed end,
When the extruded hollow shapes are lined up in the width direction and fitted so that the other closed end is inserted into one open end, the first face plates and the second face plates that are the joint locations Extrusion hollow characterized by having a joint structure in which the abutting portions of the first face plates are displaced to the closed end side with respect to the abutting portions of the second face plates Profile material. 第１面板と第２面板との間を複数の斜面板にてトラス状に連結するとともに、幅方向両側部にそれぞれ継ぎ手構造を有する押出し中空形材同士を幅方向に並べて接合することにより形成された鉄道車両構体において、
前記継ぎ手構造は、一方の前記押出し中空形材の幅方向側部に、前記斜面板の１つが前記第１面板に交わる端部位置と第２面板の端部との間が開いた状態の開状端部が形成され、
他方の前記押出し中空形材の幅方向側部に、前記斜面板の１つが前記第１面板に交わる端部位置と前記第２面板の端部との間を前記第１面板と前記第２面板とに直交する支持板にて連結して閉じた状態の閉状端部に形成されたものであり、
前記開状端部の前記第２面板に肉厚の嵌合部を形成するとともに前記第１面板と前記斜面板との接続位置から肉厚の嵌合部を前記第２面板の嵌合部よりも延出し、
前記閉状端部の前記第１面板と前記斜面板と前記支持板との接続位置に段差部を形成し、前記開状端部の第１面板の嵌合部が差し込まれるように、前記支持板を前記段差部に向けて略直交方向に折り曲げた嵌合部を形成し、
前記閉状端部の前記支持板から前記開状端部の第２面板の嵌合部が差し込まれる嵌合突起を突設し、
前記押出し中空形材同士を幅方向に並べて一方の開状端部に他方の閉状端部を差し込むようにして嵌合させた場合に、接合箇所となる前記第１面板同士及び第２面板同士とが突き当てられて面一となるとともに、第１面板同士の突き当て部分が第２面板同士の突き当て部分よりも閉状端部側にずれるようにした継ぎ手構造の接合により形成されたものであることを特徴とする鉄道車両構体。 It is formed by connecting the first face plate and the second face plate in a truss shape with a plurality of slope plates, and joining extruded hollow shapes having joint structures on both sides in the width direction side by side in the width direction. In the railway vehicle structure
The joint structure has an opening in a state where one end of the inclined plate intersects the first face plate and the end of the second face plate are open on one side in the width direction of the extruded hollow profile. Shaped ends are formed,
The first face plate and the second face plate are arranged between the end position where one of the slope plates intersects the first face plate and the end portion of the second face plate on the other side in the width direction of the other extruded hollow shape member. And is formed at the closed end in a closed state connected by a support plate orthogonal to
A thick fitting portion is formed on the second face plate of the open end portion, and a thick fitting portion is connected to the second face plate from the connection position of the first face plate and the slope plate. Also extended,
The support plate is formed such that a step portion is formed at a connection position of the first face plate, the slope plate, and the support plate of the closed end portion, and a fitting portion of the first face plate of the open end portion is inserted. Forming a fitting portion bent in a substantially orthogonal direction toward the stepped portion,
Protruding a fitting protrusion into which the fitting portion of the second face plate of the open end is inserted from the support plate of the closed end,
When the extruded hollow shapes are lined up in the width direction and fitted so that the other closed end is inserted into one open end, the first face plates and the second face plates that are the joint locations Is formed by joining a joint structure in which the abutting portion between the first face plates is shifted to the closed end side with respect to the abutting portion between the second face plates. A railway vehicle structure characterized by that. 請求項２に記載する鉄道車両構体において、
前記第１面板同士及び第２面板同士の接合には、レーザ溶接またはレーザとＭＩＧ溶接またはＴＩＧ溶接とを組み合わせたハイブリッド溶接が行われるようにしたものであることを特徴とする鉄道車両構体。 In the railway vehicle structure according to claim 2 ,
A railway vehicle structure characterized in that laser welding or hybrid welding in which laser and MIG welding or TIG welding are combined is performed for joining the first face plates and the second face plates.
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JP2007130683A (en) * 2005-11-14 2007-05-31 Kinki Sharyo Co Ltd Method for welding body structure member of railroad vehicle, and joint structure used therefor
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