JP2006192995A - Extruded hollow shape and railroad rolling stock body structure formed by this shape - Google Patents

Extruded hollow shape and railroad rolling stock body structure formed by this shape Download PDF

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JP2006192995A
JP2006192995A JP2005004897A JP2005004897A JP2006192995A JP 2006192995 A JP2006192995 A JP 2006192995A JP 2005004897 A JP2005004897 A JP 2005004897A JP 2005004897 A JP2005004897 A JP 2005004897A JP 2006192995 A JP2006192995 A JP 2006192995A
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face plate
extruded hollow
hollow mold
face
plate
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JP4578985B2 (en
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Takamitsu Sasa
孝光 佐々
Yasushi Sakai
康士 酒井
Minoru Tayama
稔 田山
Yoshitomo Watanabe
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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  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Laser Beam Processing (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extruded hollow shape having lightweight joint structure and a railroad rolling stock body structure formed by the shapes. <P>SOLUTION: In the extruded hollow shape 1, a plurality of through-holes are parallelly formed by interposing a plurality of inclined face plates 13 between a first face plate 11 and a second face plate 12. The extruded hollow shape can be jointed with other one by fitting to the width direction orthogonal to the through-hole, and either an opened end part of the state that the first face plate 11 and the second face plate 12 are opened or a closed end part of the state that the first face plate 11 and the second face plate 12 are closed by a support plate 15. When the extruded hollow shapes 1L, 1R are disposed in the width direction and fitted so as to insert one closed end part into the other opened end part, the support plate 15 is made to enter the opened end part side and the positions of joining places of abutting parts of the first face plates 11 and those of the second face plates 12 are made to be deviated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、押出し中空型材及びその型材を接合して形成された鉄道車両構体に関し、特に押出し中空型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型材及び鉄道車両構体に関する。   The present invention relates to an extruded hollow mold material and a railway vehicle structure formed by joining the mold materials, and more particularly to an extruded hollow mold material and a railway vehicle structure that are reduced in weight by reducing a joint portion that joins the extruded hollow mold materials.

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型材が使用され、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型材１１０が幅方向に複数並べられて接合されている。この押出し中空型材１１０や、以下に説明する各押出し中空型材は、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 type material made of aluminum is used for the side structure and the roof structure. As such a conventional example, for example, one described in JP-A-11-320131 can be cited. 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. A plurality of long extruded hollow molds 110 are arranged in the width direction and joined to the side structure 101 and the roof structure 102. The extruded hollow mold material 110 and each extruded hollow mold material described below are extruded by, for example, an aluminum alloy.

次に、押出し中空型材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。押出し中空型材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１１４が形成されている。そして、突出片１１３を差し込むようにして押出し中空型材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 mold members 110 is configured as shown in FIG. In the extruded hollow mold 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 a slope 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 is vertically formed on the left end portion in contact therewith, and a support plate 114 is formed so as to connect it. Then, after the extruded hollow mold members 110 are butted against each other in the width direction so that the protruding pieces 113 are inserted, the welding tool 200 is pressed against the joint portion to perform friction stir welding.

一方、こうした鉄道車両構体を構成する押出し中空型材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型材であって、その押出し中空型材同士の継ぎ手部分を示した図である。
押出し中空型材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 mold member 110 constituting such a railway vehicle structure may be joined by MIG welding or TIG welding. Therefore, FIG. 4 is an extruded hollow mold material joined by MIG welding, and shows a joint portion between the extruded hollow mold materials.
In the extruded hollow mold member 130, an upper surface plate 131 at the upper side of the drawing and a lower surface plate 132 at the lower side 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型材では、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型材自身の重量、更にはその押出し中空型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枚ほどの押出し中空型材１１０又は１３０が接合されて構成されている。従って、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 mold material having such a jointed joint structure, the weight of the joint portion becomes heavy, so that the weight of the extruded hollow mold material itself, and further, the railway vehicle structure composed of the extruded hollow mold material becomes heavy, This is not preferable in a railway vehicle that is increasing in speed. As shown in FIG. 2, the railway vehicle structure 100 is configured by joining approximately 20 extruded hollow mold members 110 or 130 in the side structure 101 and the roof structure 102. Accordingly, there are a number of joints corresponding to the number of joints, and the length of the joint extends over the entire length of the vehicle body, which greatly affects the weight increase of the railway vehicle structure. 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型材及びその型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 mold member having a lightweight joint structure and a railway vehicle structure formed by the mold member in order to solve the problems.

本発明に係る押出し中空型材は、第１面板と第２面板との間に複数の斜面板を介在させて複数の貫通孔が平行に形成されたものであり、その貫通孔に直交する幅方向に嵌合させて他のものと接合可能にしたものであって、前記第１面板と第２面板とが開いた状態の開状端部であるか、前記第１面板と第２面板とが支持板によって閉じた状態の閉状端部であって、押出し中空型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、前記支持板が前記開状端部側に入り込むようにし、接合箇所となる前記第１面板同士の突き当て部分と前記第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ものであることを特徴とする。   The extruded hollow mold material according to the present invention has a plurality of through holes formed in parallel with a plurality of inclined plates interposed between a first face plate and a second face plate, and a width direction perpendicular to the through holes. The first face plate and the second face plate are open ends, or the first face plate and the second face plate are connected to each other. A closed end in a state of being closed by a support plate, and when the extruded hollow mold members are arranged in the width direction and fitted so that the other closed end is inserted into one open end, the support plate is The position of the abutting portion between the first face plates and the abutting portion between the second face plates, which are joint portions, is shifted so as to enter the open end portion side. .

また、本発明に係る押出し中空型材は、幅方向の一方が、第１面板と第２面板とが開いた状態の開状端部であり、幅方向の他方が、第１面板と第２面板とが支持板によって閉じた状態の閉状端部であることが好ましい。
また、本発明に係る押出し中空型材は、前記開状端部が、第１面板が第２面板よりも幅方向に長く形成され、前記閉状端部が、前記支持板に連続して前記開状端部の第１面板の内側に当接する嵌合部と、前記開状端部の第２面板の内側に当接するように突設された嵌合突起とが形成されものであることが好ましい。 Further, in the extruded hollow mold material according to the present invention, one of the width direction is an open end in a state where the first face plate and the second face plate are open, and the other in the width direction is the first face plate and the second face plate. Are preferably closed ends in a state of being closed by a support plate.
In the extruded hollow mold material according to the present invention, the open end is formed such that the first face plate is longer in the width direction than the second face plate, and the closed end is continuous with the support plate. It is preferable that a fitting portion that contacts the inside of the first face plate at the end portion and a fitting protrusion that protrudes so as to contact the inside of the second face plate of the open end portion are formed.

一方、本発明に係る鉄道車両構体は、第１面板と第２面板との間に複数の斜面板を介在させて複数の貫通孔が平行に形成された押出し中空型材同士であり、複数の押出し中空型材同士を貫通孔に直交する幅方向に嵌合し、第１面板同士および第２面板同士の突き当て部分を接合して形成されたものであって、前記押出し中空型材は、前記第１面板と第２面板とが開いた状態の開状端部であるか、前記第１面板と第２面板とが支持板によって閉じた状態の閉状端部であって、その押出し中空型材同士が、前記支持板を前記開状端部側に入り込むようにして、一方の開状端部に他方の閉状端部を差し込んで嵌合し、接合箇所となる前記第１面板同士の突き当て部分と前記第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ものであることを特徴とする。   On the other hand, the railway vehicle structure according to the present invention is an extruded hollow mold member in which a plurality of through holes are formed in parallel with a plurality of inclined plates interposed between a first face plate and a second face plate, and a plurality of extruded The hollow mold materials are formed by fitting the hollow face materials in the width direction orthogonal to the through-holes and joining the abutting portions of the first face plates and the second face plates. The face plate and the second face plate are open ends in an open state, or the first face plate and the second face plate are closed ends with a support plate, and the extruded hollow mold members are The support plate is inserted into the open end portion side, the other closed end portion is inserted into and fitted into one open end portion, and the abutting portion between the first face plates serving as joint portions and the above-mentioned The position of the abutting part between the second face plates is shifted. And butterflies.

また、本発明に係る鉄道車両構体は、前記押出し中空型材の幅方向の一方が、第１面板と第２面板とが開いた状態の開状端部であり、幅方向の他方が、第１面板と第２面板とが支持板によって閉じた状態の閉状端部であることが好ましい。
また、本発明に係る鉄道車両構体は、前記中空押出し型材が、前記開状端部では第１面板が第２面板よりも幅方向に長く形成され、前記閉状端部では前記支持板に連続して前記開状端部の第１面板の内側に当接する嵌合部と、前記開状端部の第２面板の内側に当接するように突設された嵌合突起とが形成され、閉状端部の嵌合部及び嵌合突起が開状端部の第１面板及び第２面板に嵌り込み、突き当てられた第１面板同士及び第２面板同士が接合されたものであることが好ましい。
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。 In the railcar structure according to the present invention, one side in the width direction of the extruded hollow mold member is an open end in a state where the first face plate and the second face plate are open, and the other in the width direction is the first. It is preferable that the face plate and the second face plate are closed end portions closed by the support plate.
In the railcar structure according to the present invention, the hollow extruded mold member is formed such that the first face plate is longer in the width direction than the second face plate at the open end, and the support plate is continuous at the closed end. And a fitting portion that contacts the inside of the first face plate of the open end portion and a fitting protrusion that protrudes so as to contact the inside of the second face plate of the open end portion are formed. It is preferable that the fitting portion and the fitting projection of the portion are fitted into the first face plate and the second face plate of the open end, and the first face plates and the second face plates that are abutted are joined to each other.
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型材及びその型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 mold material and the railway vehicle structure formed of the mold material according to the present invention, only the support plate of the closed end portion is provided between the first face plate and the second face plate at the joint portion. So, I was able to reduce the weight in that respect. 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型材及びその型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、長尺な押出し中空型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 mold according to the present invention and a railway vehicle structure formed by the mold 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. Of these, the side structure 101 and the roof structure 102 are formed by joining a plurality of long extruded hollow mold members in the width direction and abutting and joining the joint portions.

ここで、図１は、鉄道車両構体を構成する押出し中空型材について、その継ぎ手部を示した図である。押出し中空型材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型材１（以下、押出し中空型材１Ｒとする）の左側端部が、図面左側の押出し中空型材１（以下、押出し中空型材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 an extruded hollow mold material constituting a railway vehicle structure. The extruded hollow mold 1 (1R, 1L) has an upper surface plate 11 in the upper part of the drawing and a lower surface plate 12 in the lower part of the drawing arranged in parallel, and a plurality of inclined surface plates 13 are connected to them to form a cross section of the truss structure. The left end of the extruded hollow mold 1 (hereinafter referred to as extruded hollow mold 1R) on the right side of the drawing is the right end of the extruded hollow mold 1 (hereinafter referred to as extruded hollow mold 1L) on the left side of the drawing. It is connected so that it may be fitted in.

押出し中空型材１の図面右側端部は、押出し中空型材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、押出し中空型材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、押出し中空型材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 mold material 1L, the right end of the extruded hollow mold material 1 extends beyond the slope plate 13 and protrudes from the upper surface plate 11 and the lower surface plate 12 so that the extruded hollow mold material 1 overlaps. 11a and 12a are formed thicker than other portions. Further, in the present embodiment, the right end portion of the extruded hollow mold 1 is formed with an open end portion in a state where the upper surface plate 11 and the lower surface plate 12 are free and opened, and the lower surface plate 12 is the upper surface plate 11. It is shorter than the width direction (right side of the drawing).

一方、押出し中空型材１の図面左側端部は、押出し中空型材１Ｒに示すように、斜面板１３を超えて下面板１２と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、押出し中空型材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型材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, as shown in the extruded hollow mold material 1R, the left end of the extruded hollow mold material 1 extends beyond the inclined plate 13 and protrudes from the lower surface plate 12, and the upper surface plate 11 is cut off at the position of the inclined plate 13. A fitting portion 14 having a 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 mold material 1 is formed. In addition, a fitting projection 16 is formed on the support plate 15 so as to be fitted into the left end portion of the extruded hollow mold 1 together with the upper fitting portion 14.

押出し中空型材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、押出し中空型材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、押出し中空型材１Ｌの開状端部に押出し中空型材１Ｒの閉状端部が嵌め合わされるのであるが、具体的には、押出し中空型材１Ｌの嵌合部１１ａ，１２ａの間に押出し中空型材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 mold material 1 is thus formed with a joint structure at the right and left ends thereof, and the extruded hollow mold materials 1 are fitted together and joined as shown. That is, the closed end of the extruded hollow mold 1R is fitted to the open end of the extruded hollow mold 1L. Specifically, the extruded hollow mold is inserted between the fitting portions 11a and 12a of the extruded hollow mold 1L. The 1R fitting portion 14 and the fitting protrusion 16 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。 In the hybrid welding, for example, a laser beam by a CO 2 (carbon dioxide gas) laser is transmitted by a transmission mirror or the like, condensed by a condensing lens, and applied to the abutting portions 21 and 22. 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型材１の継ぎ手部分の重量を削減させ、その押出し中空型材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型材に類似する摩擦撹拌接合に対応した押出し中空型材であって、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型材の継ぎ手部と、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。   By the way, in this embodiment, the weight of the joint portion of the extruded hollow mold material 1 is reduced in the following points as compared with the conventional one, and the weight of the railway vehicle structure formed by joining a plurality of extruded hollow mold materials 1 is reduced. We were able to plan. Here, FIG. 5 is an extruded hollow mold material corresponding to friction stir welding similar to the extruded hollow mold material shown in FIG. 3, and is proposed by the present applicant for use in a comparative experiment. Therefore, a comparison was made between the joint portion of the conventional extruded hollow mold 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型材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、一方の押出し中空型材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あない。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 mold member 130 shown in FIG. 4, there are conventionally two support plates 135 at the joint portion. On the other hand, in this embodiment, since there is only one support plate 15 formed on one extruded hollow mold member 1R, the weight can be reduced 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に示す押出し中空型材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、その押出し中空型材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右側端部に、閉じた状態の図面右側端部が嵌り込むようになっている。   On the other hand, an extruded hollow mold 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. The joint between the extruded hollow molds 150 is configured such that the right end of the drawing in the closed state is fitted into the right end of the drawing in the state where the upper surface plate 151 and the lower surface plate 152 are opened.

こうして押出し中空型材１５０は、本実施形態の押出し中空型材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、押出し中空型材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 mold 150 has only one support plate 154 at the joint portion as in the extruded hollow mold 1 of the present embodiment. However, the extruded hollow mold 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. Has been. 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型材１Ｒ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型材１Ｒ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、押出し中空型材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 mold 1R of the present embodiment, laser welding and hybrid welding are performed, so that the thickness can be reduced by reducing the wall thickness. Further, in the extruded hollow mold 1R of the present 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 mold 150. Therefore, the weight can be reduced also in this respect.

以上の点から本実施形態の押出し中空型材１と従来の押出し中空型材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型材１が１．５８ｋｇ／ｍであるのに対し、図４に示した押出し中空型材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型材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、押出し中空型材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。   From the above points, the weight per unit length of the extruded hollow mold member 1 of this embodiment and the conventional extruded hollow mold members 130 and 150 in the joining direction of the illustrated joint portion was compared. Then, the extruded hollow mold material 1 of this embodiment shown in FIG. 1 is 1.58 kg / m, whereas the extruded hollow mold material 130 shown in FIG. 4 is 1.76 kg / m, which is reduced by about 10%. I was able to. The extruded hollow mold 150 shown in FIG. 5 was 1.70 kg / m, which was reduced by about 7%. Therefore, in the railway vehicle structure formed using the extruded hollow mold 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型材及びその型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型材１は、幅方向の一方を開状端部とし、他方を閉状端部を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型材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型材と、両端が閉状端部である押出し中空型材とを形成し、この二種類の押出し中空型材を交互に接合するようにしてもよい。 As described above, one embodiment of the extruded hollow mold material according to the present invention and the railway vehicle structure formed by the mold material has been described. However, the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention. Is possible.
The extruded hollow mold 1 shown in the above embodiment is formed with one end in the width direction as an open end and the other as a closed end. The extruded hollow mold material 1 is composed of, for example, an extruded hollow mold material whose both ends in the width direction are open ends, and an extruded hollow mold material whose both ends are closed ends, and these two types of extruded hollow mold materials 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型材を示した図である。It is the figure which showed the extrusion hollow mold 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型材を示した図である。It is the figure which showed the conventional extrusion hollow type 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型材を示した図である。It is the figure which showed the conventional extrusion hollow type 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型材を示した図である。It is the figure which showed the other extruded hollow type material in the past joined by friction stir welding.

符号の説明Explanation of symbols

１（１Ｌ，１Ｒ） 押出し中空型材
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 mold 11 Upper surface plate 12 Lower surface plate 13 Slope plate 14 Fitting portion 15 Support plate 16 Fitting protrusion

Claims (7)

第１面板と第２面板との間に複数の斜面板を介在させて複数の貫通孔が平行に形成されたものであり、その貫通孔に直交する幅方向に嵌合させて他のものと接合可能にした押出し中空型材において、
前記第１面板と第２面板とが開いた状態の開状端部であるか、前記第１面板と第２面板とが支持板によって閉じた状態の閉状端部であって、押出し中空型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、前記支持板が前記開状端部側に入り込むようにし、接合箇所となる前記第１面板同士の突き当て部分と前記第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ものであることを特徴とする押出し中空型材。 A plurality of inclined holes are interposed between the first face plate and the second face plate, and a plurality of through holes are formed in parallel. In extruded hollow mold materials that can be joined,
The first face plate and the second face plate are open ends, or the first face plate and the second face plate are closed by a support plate, and the extruded hollow mold members are Are arranged in the width direction so that the other closed end is inserted into one open end, and the support plate is inserted into the open end, so that the first portion which becomes a joint location An extruded hollow mold material characterized in that the positions of the abutting portion between the face plates and the abutting portion between the second face plates are shifted. 請求項１に記載する押出し中空型材において、
幅方向の一方が、第１面板と第２面板とが開いた状態の開状端部であり、幅方向の他方が、第１面板と第２面板とが支持板によって閉じた状態の閉状端部であることを特徴とする押出し中空型材。 In the extruded hollow mold material according to claim 1,
One in the width direction is an open end in a state where the first face plate and the second face plate are open, and the other in the width direction is a closed end in a state where the first face plate and the second face plate are closed by the support plate. An extruded hollow mold material characterized by being a part. 請求項１又は請求項２に記載する押出し中空型材において、
前記開状端部は、第１面板が第２面板よりも幅方向に長く形成され、前記閉状端部は、前記支持板に連続して前記開状端部の第１面板の内側に当接する嵌合部と、前記開状端部の第２面板の内側に当接するように突設された嵌合突起とが形成されものであることを特徴とする押出し中空型材。 In the extruded hollow mold material according to claim 1 or 2,
The open end is formed such that the first face plate is longer in the width direction than the second face plate, and the closed end is in contact with the inside of the first face plate of the open end continuously from the support plate. An extruded hollow mold material, characterized in that a fitting portion and a fitting protrusion protruding so as to contact the inside of the second face plate of the open end are formed. 第１面板と第２面板との間に複数の斜面板を介在させて複数の貫通孔が平行に形成された押出し中空型材同士であって、複数の押出し中空型材同士を貫通孔に直交する幅方向に嵌合し、第１面板同士および第２面板同士の突き当て部分を接合して形成された鉄道車両構体において、
前記押出し中空型材は、前記第１面板と第２面板とが開いた状態の開状端部であるか、前記第１面板と第２面板とが支持板によって閉じた状態の閉状端部であって、その押出し中空型材同士が、前記支持板を前記開状端部側に入り込むようにして、一方の開状端部に他方の閉状端部を差し込んで嵌合し、接合箇所となる前記第１面板同士の突き当て部分と前記第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ものであることを特徴とする鉄道車両構体。 Extruded hollow mold materials in which a plurality of through holes are formed in parallel with a plurality of inclined plates interposed between the first face plate and the second face plate, and the widths of the plurality of extruded hollow mold materials are perpendicular to the through holes. In the railway vehicle structure formed by fitting in the direction and joining the butted portions of the first face plates and the second face plates,
The extruded hollow mold member is an open end in a state where the first face plate and the second face plate are open, or a closed end in a state where the first face plate and the second face plate are closed by a support plate. The extruded hollow mold members are inserted into and fitted with the other closed end portion into one open end portion so that the support plate enters the open end portion side, and the first and second end portions become the joint locations. A railway vehicle structure characterized in that the positions of the abutting portions of the first face plates and the abutting portions of the second face plates are shifted. 請求項４に記載する鉄道車両構体において、
前記押出し中空型材は、幅方向の一方が、第１面板と第２面板とが開いた状態の開状端部であり、幅方向の他方が、第１面板と第２面板とが支持板によって閉じた状態の閉状端部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 4,
In the extruded hollow mold material, one side in the width direction is an open end in a state where the first face plate and the second face plate are open, and the other in the width direction is the first face plate and the second face plate by the support plate. A railway vehicle structure characterized by being a closed end portion in a closed state. 請求項４又は請求項５に記載する鉄道車両構体において、
前記中空押出し型材は、前記開状端部では第１面板が第２面板よりも幅方向に長く形成され、前記閉状端部では前記支持板に連続して前記開状端部の第１面板の内側に当接する嵌合部と、前記開状端部の第２面板の内側に当接するように突設された嵌合突起とが形成され、閉状端部の嵌合部及び嵌合突起が開状端部の第１面板及び第２面板に嵌り込み、突き当てられた第１面板同士及び第２面板同士が接合され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 4 or claim 5,
In the hollow extruded mold member, the first face plate is formed longer in the width direction than the second face plate at the open end portion, and the first end plate of the open end portion is continuous with the support plate at the closed end portion. A fitting portion that contacts the inside and a fitting protrusion that protrudes so as to contact the inside of the second face plate of the open end are formed, and the fitting portion and the fitting protrusion of the closed end are opened. A railway vehicle structure, wherein the first face plate and the second face plate which are fitted and fitted to the first face plate and the second face plate at the end of the shape are joined. 請求項４乃至請求項６のいずれか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 any one of claims 4 to 6,
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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