JP5684539B2 - Railcar floor structure - Google Patents

Railcar floor structure Download PDF

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JP5684539B2
JP5684539B2 JP2010250872A JP2010250872A JP5684539B2 JP 5684539 B2 JP5684539 B2 JP 5684539B2 JP 2010250872 A JP2010250872 A JP 2010250872A JP 2010250872 A JP2010250872 A JP 2010250872A JP 5684539 B2 JP5684539 B2 JP 5684539B2
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floor
lower floor
support
sleeper
sleeper direction
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JP2012101639A (en
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加藤　修
修 加藤
森　康行
康行 森
篤史 白井
篤史 白井
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Nippon Sharyo Ltd
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Description

本発明は、下床の上に床受を介して上床が設けられた二重床の鉄道車両の床構造に関し、特に、床下からの熱を車内側へ伝わり難くした鉄道車両の床構造に関する。   The present invention relates to a floor structure of a double-floor railway vehicle in which an upper floor is provided on a lower floor via a floor support, and more particularly to a floor structure of a railway vehicle that makes it difficult to transfer heat from under the floor to the vehicle interior.

鉄道車両には、二重の床構造で構成されたものがある。その床構造は、台枠に下床が張られ、その上面には床受が溶接されて起立し、その床受に支えられるようにして上床が張り渡される。床受はレール方向（車体長手方向）に伸びて配置された板材であり、枕木方向（車体横方向）に複数配置されている。下床と上床とは床受を介して接続されており、両床の間には空間が存在する。そこには、下床の上面に敷き詰められた詰物層が形成され、更にその詰物層の上に断熱層が設けられている。詰物層は、例えば軽量骨材をエポキシ樹脂にアミン化合物を含む硬化剤で結合一体化した材料が用いられる。   Some railway vehicles have a double floor structure. In the floor structure, a lower floor is stretched on a frame, a floor support is welded to the upper surface, and the upper floor is stretched so as to be supported by the floor support. The floor supports are plate members arranged extending in the rail direction (vehicle body longitudinal direction), and a plurality of floor supports are arranged in the sleeper direction (vehicle body lateral direction). The lower floor and the upper floor are connected via floor supports, and there is a space between the two floors. There, a filling layer spread on the upper surface of the lower floor is formed, and a heat insulating layer is further provided on the filling layer. For the filling layer, for example, a material in which lightweight aggregate is bonded and integrated with an epoxy resin with a curing agent containing an amine compound is used.

特開平８−８５４５２号公報Japanese Patent Application Laid-Open No. 8-85452

こうした従来の床構造は、その構成部材である下床、上床及び床受にステンレスなどの金属が使用されているため、火災時に下から下床が加熱されると、その熱が床受を介して上床に伝わり、車内温度を急激に上昇させることになる。一方で二重の床構造は、床下から車内への振動の伝達を抑えた防振効果を発揮するため、そうした防振効果に加えて昇温防止のための工夫が必要であった。   In such a conventional floor structure, metal such as stainless steel is used for the lower floor, the upper floor and the floor receiver, which are the components, so when the lower floor is heated from the bottom in the event of a fire, the heat passes through the floor receiver. As a result, the temperature inside the vehicle rises rapidly. On the other hand, the double floor structure exerts an anti-vibration effect that suppresses transmission of vibrations from under the floor to the vehicle interior, and in addition to such anti-vibration effect, it is necessary to devise measures for preventing temperature rise.

本発明は、かかる課題を解決すべく、床下からの熱を車内側へ伝わり難くした鉄道車両の床構造を提供することを目的とする。   In order to solve this problem, an object of the present invention is to provide a railcar floor structure that makes it difficult to transfer heat from under the floor to the inside of the vehicle.

本発明に係る鉄道車両の床構造は、枕木方向に凹部と凸部とが交互に形成された波形鋼板の下床が台枠上に張られ、その下床上には床受を介して上床が支持され、前記下床と上床との間に空間を形成し、前記下床の上面に詰物層が敷き詰められ、更にその上に断熱層が設けられた二重床であり、前記床受は、枕木方向に沿って配置される枕木方向床受と、レール方向に沿って配置されたレール方向床受とを有し、前記枕木方向床受は、前記下床の凸部上面に接合され、前記レール方向床受は、前記下床とは非接触であって前記詰物層に固定されたものであることを特徴とする。   In the floor structure of a railway vehicle according to the present invention, a lower floor of a corrugated steel sheet in which concave portions and convex portions are alternately formed in a sleeper direction is stretched on a frame, and the upper floor is placed on the lower floor via a floor support. A double floor in which a space is formed between the lower floor and the upper floor, a filling layer is laid on the upper surface of the lower floor, and a heat insulating layer is further provided on the upper floor; A sleeper direction floor support disposed along the sleeper direction, and a rail direction floor support disposed along the rail direction, wherein the sleeper direction floor support is joined to the upper surface of the convex portion of the lower floor, The rail direction floor support is non-contact with the lower floor and is fixed to the filling layer.

本発明に係る鉄道車両の床構造は、前記レール方向床受が、前記下床の凹部に配置されたものであることが好ましい。
本発明に係る鉄道車両の床構造は、前記枕木方向床受が、断面がコの字形状の部材であり、その開放端が前記下床の凸部上面に接合され、前記レール方向床受は、断面がＬ字形状の部材であり、前記上床に略直交して垂れ下がった面の下方端部分が前記詰物層に固定されたものであることが好ましい。
本発明に係る鉄道車両の床構造は、前記枕木方向床受が、前記下床との接触側の前記凹部に対応する位置に切欠部が形成されたものであることが好ましい。
本発明に係る鉄道車両の床構造は、前記枕木方向床受が、前記下床との接触側の前記凸部に対応する位置に切欠部が形成され、枕木方向に見て隣り合う前記切欠部の間には、少なくとも一つの前記凸部に対応する位置に非切欠部が存在し接合されたものであることが好ましい。 In the floor structure of a railway vehicle according to the present invention, it is preferable that the rail direction floor support is disposed in a recess of the lower floor.
In the floor structure of a railway vehicle according to the present invention, the sleeper direction floor support is a member having a U-shaped cross section, and an open end thereof is joined to the upper surface of the convex portion of the lower floor, and the rail direction floor support is It is preferable that the cross section is an L-shaped member, and the lower end portion of the surface that hangs substantially perpendicular to the upper floor is fixed to the filling layer.
In the floor structure of a railway vehicle according to the present invention, it is preferable that the sleeper direction floor support has a notch formed at a position corresponding to the concave portion on the contact side with the lower floor.
In the floor structure of a railway vehicle according to the present invention, the sleeper direction floor support has a notch formed at a position corresponding to the convex portion on the contact side with the lower floor, and the notch portions adjacent to each other when viewed in the sleeper direction. It is preferable that a non-notch part exists in the position corresponding to at least 1 said convex part between, and is joined.

本発明によれば、枕木方向床受とレール方向床受とを有する床受によって二重床を構成したことにより、下床と床受との接触を減らすことができ、よって床受によるヒートブリッジの影響を抑えて昇温を防止することが可能になる。 According to the present invention, by constructing a double floor by floor receiving and a sleeper direction floor receiving the rail direction bed receiving it can and score reduce the contact between the lower floor and the floor receiving, thus heat by floor receiving It becomes possible to suppress the temperature rise by suppressing the influence of the bridge.

床構造の実施形態を示したレール方向から見た車両床の断面図である。It is sectional drawing of the vehicle floor seen from the rail direction which showed embodiment of a floor structure. 床構造の実施形態を示した車両床の一部平面図である。It is a partial plan view of a vehicle floor showing an embodiment of a floor structure. 図２を枕木方向から見た車両床の断面図である。It is sectional drawing of the vehicle floor which looked at FIG. 2 from the sleeper direction. 簡易燃焼試験の結果をグラフにした図である。It is the figure which made the result of the simple combustion test into a graph. 第２実施形態の枕木方向床受をレール方向から見た図である。It is the figure which looked at the sleeper direction floor support of 2nd Embodiment from the rail direction. 第３実施形態の枕木方向床受をレール方向から見た図である。It is the figure which looked at the sleeper direction floor support of 3rd Embodiment from the rail direction.

次に、本発明に係る鉄道車両の床構造について図面を参照しながら以下に説明する。図１は、本実施形態の床構造を示した図であって、レール方向から見た車両床の断面図である。本実施形態の床構造も従来例のものと同様に二重床である。その車両床１０は、車体の長手方向に配置された左右の側梁１と、その側梁１間に架け渡された枕梁２と横梁を有する台枠３上に構成されている。台枠３の上には一面に下床１１が敷設されている。   Next, the floor structure of a railway vehicle according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the floor structure of the present embodiment, and is a cross-sectional view of the vehicle floor as viewed from the rail direction. The floor structure of this embodiment is also a double floor as in the conventional example. The vehicle floor 10 is configured on a frame 3 having left and right side beams 1 arranged in the longitudinal direction of the vehicle body, and a pillow beam 2 and a horizontal beam spanned between the side beams 1. A lower floor 11 is laid on one side of the underframe 3.

下床１１は、例えばステンレスなどからなる金属性の波形鋼板（キーストンプレート）であり、断面が台形や矩形の凹部１１１と凸部１１２とが枕木方向に交互に形成され、その凹部１１１及び凸部１１２はレール方向に連続している。下床１１の上には、床受を介して上床１２が支持され、その上床１２が車内の床面を構成している。下床１１と上床１２との間には空間ができるが、そこには下床１１の凹部１１１を埋めるように詰物層１３が敷き詰められ、更に詰物層１３の平らな上面には断熱層１４が重ねられている。   The lower floor 11 is a metallic corrugated steel plate (keystone plate) made of, for example, stainless steel, and the cross section is trapezoidal or rectangular, and concave portions 111 and convex portions 112 are alternately formed in the sleeper direction. 112 is continuous in the rail direction. An upper floor 12 is supported on the lower floor 11 via a floor support, and the upper floor 12 constitutes a floor surface in the vehicle. There is a space between the lower floor 11 and the upper floor 12, but the filling layer 13 is spread over the recess 111 of the lower floor 11, and a heat insulating layer 14 is further formed on the flat upper surface of the filling layer 13. It is piled up.

ところで、この車両床１０は、従来のものに比べて上床１２を支持する床受と下床１１との接触部分が少なくなっている。ここで、図２は、本実施形態の床構造を示した図であって、車両床の一部平面図であり、図３は、図２を枕木方向から見た車両床の断面図である。車両床１０では、枕木方向に沿って配置される枕木方向床受１５と、レール方向に沿って配置されるレール方向床受１６によって床受が構成されている。枕木方向床受１５は、下床１１の凸部１１２上面に接合され、レール方向床受１６は下床１１に対しては非接触である。   By the way, the vehicle floor 10 has fewer contact portions between the floor support that supports the upper floor 12 and the lower floor 11 than the conventional one. Here, FIG. 2 is a diagram showing the floor structure of the present embodiment, which is a partial plan view of the vehicle floor, and FIG. 3 is a cross-sectional view of the vehicle floor when FIG. 2 is viewed from the sleeper direction. . In the vehicle floor 10, a floor receiver is configured by a sleeper direction floor receiver 15 disposed along the sleeper direction and a rail direction floor receiver 16 disposed along the rail direction. The sleeper direction floor receiver 15 is joined to the upper surface of the convex portion 112 of the lower floor 11, and the rail direction floor receiver 16 is not in contact with the lower floor 11.

枕木方向床受１５は、断面がコの字形状の部材であって、開放端側が下になって下床１１の凸部１１２上面に当てられている。逆に、凹部１１１の位置では、枕木方向床受１５が下床１１から浮いている。一方、レール方向床受１６は、断面がＬ字形状の部材であって、上床１２と略直交して垂れ下がった面の下方端部分が詰物層１３へ差し込まれ、固定されている。レール方向床受１６は、凹部１１１及び凸部１１２と平行であって、凹部１１１の位置に合わせて設けられている。   The sleeper direction floor receiver 15 is a member having a U-shaped cross section, and is placed on the upper surface of the convex portion 112 of the lower floor 11 with the open end side down. On the contrary, at the position of the recess 111, the sleeper direction floor receiver 15 floats from the lower floor 11. On the other hand, the rail direction floor receiver 16 is a member having an L-shaped cross section, and a lower end portion of a surface that hangs substantially perpendicular to the upper floor 12 is inserted into the filling layer 13 and fixed. The rail direction floor receiver 16 is parallel to the concave portion 111 and the convex portion 112 and is provided in accordance with the position of the concave portion 111.

レール方向床受１６は、その長手方向端部が枕木方向床受１５の側面に突き当てられ、その突き当て部分が溶接され、枕木方向床受１５とレール方向床受１６とが床受として一体になっている。そして、この床受は、枕木方向床受１５の開放端側が下床１１の凸部１１２上面に当てられて溶接されるが、レール方向床受１６は下床１１に対しては浮いた状態になり、非接触である。   The rail direction floor receiver 16 has its longitudinal end abutted against the side surface of the sleeper direction floor receiver 15, the abutted portion is welded, and the sleeper direction floor receiver 15 and the rail direction floor receiver 16 are integrated as a floor receiver. It has become. And this floor support is welded with the open end side of the sleeper direction floor support 15 being applied to the upper surface of the convex part 112 of the lower floor 11, but the rail direction floor support 16 is in a floating state with respect to the lower floor 11. It is non-contact.

このような車両床１０では、枕木方向床受１５及びレール方向床受１６からなる床受が下床１１の上に溶接された後に、その下床１１上にエポキシ樹脂に軽量骨材を含めた詰物剤が流し込まれ、表面が平らになるように整えて硬化させた詰物層１３が形成される。その際、詰物層１３は、図１に示すように、レール方向床受１６の下方端部分が埋まる厚さで形成される。その結果、レール方向床受１６は、下床１１とは非接触であるが、硬化した詰物層１３によって支えられることになる。そして、詰物層１３の上に重ねて断熱層１４が形成される。断熱層１４には、ロックウールやセラミックウールなどが使用される。   In such a vehicle floor 10, after a floor support composed of a sleeper direction floor support 15 and a rail direction floor support 16 is welded onto the lower floor 11, a lightweight aggregate is included in the epoxy resin on the lower floor 11. The filling agent 13 is poured, and the filling layer 13 is formed by setting the surface flat and curing it. At that time, as shown in FIG. 1, the filling layer 13 is formed with a thickness that allows the lower end portion of the rail direction floor support 16 to be buried. As a result, the rail direction floor support 16 is not in contact with the lower floor 11 but is supported by the hardened filling layer 13. Then, a heat insulating layer 14 is formed on the filling layer 13. For the heat insulating layer 14, rock wool, ceramic wool, or the like is used.

こうして固定された枕木方向床受１５及びレール方向床受１６の上には、上床１２が載せられ、複数箇所のネジ止めによって固定される。上床１２と枕木方向床受１５及びレール方向床受１６との固定には、その間に床受ライナー１７が挟み込まれている。床受ライナー１７は、振動防止に加えて耐火性を考慮して耐火ゴムが使用される。そして、上床１２の上面にはゴム材からなる床敷物１８が貼り付けられている。   The upper floor 12 is placed on the sleeper direction floor receiver 15 and the rail direction floor receiver 16 thus fixed, and is fixed by screwing at a plurality of locations. For fixing the upper floor 12, the sleeper direction floor receiver 15 and the rail direction floor receiver 16, a floor receiver liner 17 is sandwiched therebetween. The floor support liner 17 is made of fire resistant rubber in consideration of fire resistance in addition to vibration prevention. A floor covering 18 made of a rubber material is attached to the upper surface of the upper floor 12.

以上、本実施形態の車両床１０は、振動軽減に加えて車内の温度上昇を緩和させることが可能となった。図４は、図２に示す小面積の車両床１０の供試体と、同じように作製した従来の車両床の供試体について行った、簡易燃焼試験の結果をグラフにした図であり、縦軸に温度、横軸に時間を示している。簡易燃焼試験では、ガスバーナーを使用した加熱炉によって下床１１の下側から加熱し、上床１２の上面温度を計測した。なお、従来の車両床の床構造は、レール方向床受によってのみ上床を支持し、そのレール方向床受が下床に直接接合されたものである。   As described above, the vehicle floor 10 according to the present embodiment can mitigate the temperature rise in the vehicle in addition to the vibration reduction. FIG. 4 is a graph showing the results of a simple combustion test performed on a specimen of a vehicle floor 10 having a small area shown in FIG. 2 and a specimen of a conventional vehicle floor produced in the same manner. Shows the temperature and the horizontal axis shows the time. In the simple combustion test, heating was performed from the lower side of the lower floor 11 by a heating furnace using a gas burner, and the upper surface temperature of the upper floor 12 was measured. In addition, the conventional floor structure of a vehicle floor supports an upper floor only by a rail direction floor support, and the rail direction floor support is directly joined to the lower floor.

この試験結果では、床上温度が８０度に達するのに共に１５分程度であったが、その後は従来構造と車体床１０の本構造との温度上昇に差が生じた。具体的には、床上温度が１００度に達するのに、従来構造では２３分程であったが、本構造は３７分程だった。更に床上温度が２００度に達するのに、従来構造では５０分程であったが、本構造では１時間経過した時点でも達していなかった。従って、床受（１５，１６）と下床１１との接触を減らした本構造では、床受（１５，１６）が下床１１と上床１２とのヒートブリッジとして昇温に及ぼしていた影響を抑え、前述した防振効果と共に昇温を抑制する効果が得られた。   In this test result, it took about 15 minutes for the floor temperature to reach 80 ° C., but thereafter there was a difference in temperature rise between the conventional structure and the main structure of the vehicle body floor 10. Specifically, while the temperature on the floor reached 100 degrees, the conventional structure took about 23 minutes, but this structure took about 37 minutes. Furthermore, although the temperature on the floor reached 200 degrees, in the conventional structure, it was about 50 minutes, but in this structure, it did not reach even when 1 hour had passed. Therefore, in the present structure in which the contact between the floor receiver (15, 16) and the lower floor 11 is reduced, the influence of the floor receiver (15, 16) exerted on the temperature rise as a heat bridge between the lower floor 11 and the upper floor 12. The effect which restrained and temperature rising was acquired with the anti-vibration effect mentioned above.

更に本実施形態では、下床１１と上床１２との間に、枕木方向床受１５とレール方向床受１６を接合した床受を介して二重床としたことにより、従来のものと同様に、床下から車内への振動の伝達を抑えた防振床構造とすることができた。特に、レール方向床受１６は下床１１とは非接触であり、詰物層１３に固定されているため、そのレール方向床受１６を伝わる振動は、下床１１に直接固定されている従来のものよりも抑えられる。   Furthermore, in the present embodiment, a double floor is formed between the lower floor 11 and the upper floor 12 through a floor support in which a sleeper direction floor support 15 and a rail direction floor support 16 are joined, so that it is similar to the conventional one. As a result, it was possible to obtain a vibration-isolating floor structure that suppresses the transmission of vibration from under the floor to the vehicle interior. Particularly, since the rail direction floor support 16 is not in contact with the lower floor 11 and is fixed to the filling layer 13, the vibration transmitted through the rail direction floor support 16 is directly fixed to the lower floor 11. Suppressed than things.

次に、本実施形態の床受のうち特に枕木方向床受について説明する。図５は、第２実施形態の枕木方向床受をレール方向から見た図である。この枕木方向床受２１は、図３に示す枕木方向床受１５と同様に断面がコの字形状の部材であって、開放端側が下になって下床１１の凸部１１２に当てられている。しかし、その開放端は直線ではなく、複数の切欠部２１１が形成されている。   Next, the sleeper direction floor support among the floor supports of the present embodiment will be described. FIG. 5: is the figure which looked at the sleeper direction floor support of 2nd Embodiment from the rail direction. This sleeper direction floor receiver 21 is a member having a U-shaped cross section, similar to the sleeper direction floor receiver 15 shown in FIG. 3, and is applied to the convex portion 112 of the lower floor 11 with the open end side down. Yes. However, the open end is not a straight line, and a plurality of notches 211 are formed.

この切欠部２１１は、枕木方向床受２１の軽量化のために形成されたものである。ここでは、下床１１の凹部１１１の位置に対応して形成されているが、同じく凹部１１１に配置されたレール方向床受１６と重なる箇所は除かれている。枕木方向床受２１は、レール方向に複数配置されて、しかもそれぞれが断面コの字形状であるため切欠部２１１は、両側面に形成される。従って、一つ一つの切欠部２１１が僅かであっても車体全体において軽量化の効果は大きい。一方で、一つの切欠部２１１について面積は僅かであるため、剛性への影響はない。   The notch 211 is formed to reduce the weight of the sleeper direction floor receiver 21. Here, it is formed corresponding to the position of the concave portion 111 of the lower floor 11, but the portion overlapping the rail direction floor receiver 16 similarly disposed in the concave portion 111 is excluded. A plurality of sleeper direction floor supports 21 are arranged in the rail direction, and each has a U-shaped cross section, so that the cutout portions 211 are formed on both side surfaces. Therefore, even if each notch 211 is small, the effect of reducing the weight of the entire vehicle body is great. On the other hand, since the area of one notch 211 is small, there is no influence on the rigidity.

続いて、図６に示した第３実施形態の枕木方向床受の他の例について説明する。この枕木方向床受２２は、図３に示す枕木方向床受１５と同様に断面がコの字形状の部材であって、開放端側が下になって下床１１の凸部１１２に当てられている。そして、この枕木方向床受２２にも、その開放端に複数の切欠部２２１が形成されている。   Then, the other example of the sleeper direction floor support of 3rd Embodiment shown in FIG. 6 is demonstrated. This sleeper direction floor receiver 22 is a member having a U-shaped cross section, similar to the sleeper direction floor receiver 15 shown in FIG. 3, and is applied to the convex portion 112 of the lower floor 11 with the open end side down. Yes. The sleeper direction floor receiver 22 is also formed with a plurality of notches 221 at its open end.

切欠部２２１は、下床１１の凸部１１２に対応した位置に対応して形成されている。すなわち、切欠部２２１は、これによって枕木方向床受２２の軽量化の効果を得ることもできるが、凸部１１２との接触を少なくし、熱の伝達を遮断する効果が得られる。ただし、枕木方向床受２２は上床１２にかかる荷重を支える必要があるため、下床１１にも接合していなければならない。そこで、図示するように、凸部１１２に対して接触と非接触とが交互になるように切欠部２２１が形成されている。なお、枕木方向床受２２の両側面に形成する切欠部２２１の位置を互いにずらすようにしてもよい。   The notch 221 is formed corresponding to a position corresponding to the convex portion 112 of the lower floor 11. That is, the notch 221 can obtain the effect of reducing the weight of the sleeper direction floor receiver 22 by this, but the effect of reducing the contact with the convex 112 and blocking the heat transfer can be obtained. However, since the sleeper direction floor receiver 22 needs to support the load applied to the upper floor 12, it must be joined to the lower floor 11. Therefore, as shown in the figure, the notch portions 221 are formed so that contact and non-contact alternate with the convex portion 112. In addition, you may make it shift the position of the notch part 221 formed in the both sides | surfaces of the sleeper direction floor support 22 mutually.

枕木方向床受２２は、レール方向に複数配置され、しかもそれぞれが断面コの字形状であるため切欠部２１１は両側面に形成される。従って、凸部１１２との接触箇所を半分にすることによって、或いは半分にならないまでも接触箇所を減らすことによって昇温を抑制する効果を向上させることができる。更に本形態でも、一つ一つの切欠部２２１は僅かであるが、車体全体において軽量化の効果は大きく、一方で一つの切欠部２１１について面積は僅かであるため、剛性への影響はない。   A plurality of sleeper direction floor supports 22 are arranged in the rail direction, and each has a U-shaped cross section, so that the notches 211 are formed on both side surfaces. Therefore, the effect of suppressing the temperature rise can be improved by halving the contact portion with the convex portion 112 or reducing the contact portion even if it does not halve. Further, even in this embodiment, each notch 221 is slight, but the effect of reducing the weight is large in the entire vehicle body, while the area of one notch 211 is small, so that there is no influence on the rigidity.

以上、本発明に係る鉄道車両の床構造について実施形態を説明したが、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。
例えば、前記実施形態では、レール方向床受１６は、全てを必ず下床１１と非接触にしなければならない訳ではなく、剛性などを考慮して一部が下床１１と接しているようなものであってもよい。
また、枕木方向床受１５などは断面がコの字形状のものを示して説明したが、例えば断面がＬ字形状であってもよい。
また、前記レール方向床受１６は、下床１１の凹部１１１に対応して配置したものを示したが、下床１１と接しなければ凸部１１２の位置に配置してもよい。 As mentioned above, although embodiment was described about the floor structure of the rail vehicle which concerns on this invention, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.
For example, in the above-described embodiment, the rail-direction floor receiver 16 does not necessarily have to be in contact with the lower floor 11, but is partially in contact with the lower floor 11 in consideration of rigidity and the like. It may be.
The sleeper direction floor receiver 15 and the like have been described with a U-shaped cross section, but the cross section may be L-shaped, for example.
Moreover, although the said rail direction floor receiver 16 showed what was arrange | positioned corresponding to the recessed part 111 of the lower floor 11, you may arrange | position in the position of the convex part 112, if it does not contact the lower floor 11. FIG.

１０ 車両床
１１ 下床
１２ 上床
１３ 詰物層
１４ 断熱層
１５ 枕木方向床受
１６ レール方向床受 DESCRIPTION OF SYMBOLS 10 Vehicle floor 11 Lower floor 12 Upper floor 13 Filling layer 14 Heat insulation layer 15 Sleeper direction floor receiver 16 Rail direction floor receiver

Claims (4)

枕木方向に凹部と凸部とが交互に形成された波形鋼板の下床が台枠上に張られ、その下床には床受を介して上床が支持され、前記下床と上床との間に空間を形成し、前記下床の上面に詰物層が敷き詰められ、更にその上に断熱層が設けられた二重床をなす鉄道車両の床構造において、
前記床受は、枕木方向に沿って配置される枕木方向床受と、レール方向に沿って配置されたレール方向床受とを有し、前記枕木方向床受は、前記下床の凸部上面に接合され、前記レール方向床受は、前記下床とは非接触であって前記詰物層に固定されたものであること、
前記レール方向床受は、前記下床の凹部に対応する位置に配置されたものであることを特徴とする鉄道車両の床構造。 A corrugated steel sheet lower floor in which concave and convex portions are alternately formed in the sleeper direction is stretched on a frame, and the upper floor is supported on the lower floor via a floor support, between the lower floor and the upper floor. In the floor structure of a railway vehicle that forms a double floor in which a space is formed, a filling layer is laid on the upper surface of the lower floor, and a heat insulating layer is further provided thereon,
The floor support has a sleeper direction floor support arranged along the sleeper direction and a rail direction floor support arranged along the rail direction, and the sleeper direction floor support is an upper surface of the convex portion of the lower floor. The rail direction floor support is non-contact with the lower floor and fixed to the filling layer,
The rail vehicle floor structure according to claim 1, wherein the rail direction floor support is disposed at a position corresponding to the concave portion of the lower floor. 枕木方向に凹部と凸部とが交互に形成された波形鋼板の下床が台枠上に張られ、その下床には床受を介して上床が支持され、前記下床と上床との間に空間を形成し、前記下床の上面に詰物層が敷き詰められ、更にその上に断熱層が設けられた二重床をなす鉄道車両の床構造において、
前記床受は、枕木方向に沿って配置される枕木方向床受と、レール方向に沿って配置されたレール方向床受とを有し、前記枕木方向床受は、前記下床の凸部上面に接合され、前記レール方向床受は、前記下床とは非接触であって前記詰物層に固定されたものであること、
前記枕木方向床受は、断面がコの字形状の部材であり、その開放端が前記下床の凸部上面に接合され、前記レール方向床受は、断面がＬ字形状の部材であり、前記上床に略直交して垂れ下がった面の下方端部分が前記詰物層に固定されたものであることを特徴とする鉄道車両の床構造。 A corrugated steel sheet lower floor in which concave and convex portions are alternately formed in the sleeper direction is stretched on a frame, and the upper floor is supported on the lower floor via a floor support, between the lower floor and the upper floor. In the floor structure of a railway vehicle that forms a double floor in which a space is formed, a filling layer is laid on the upper surface of the lower floor, and a heat insulating layer is further provided thereon,
The floor support has a sleeper direction floor support arranged along the sleeper direction and a rail direction floor support arranged along the rail direction, and the sleeper direction floor support is an upper surface of the convex portion of the lower floor. The rail direction floor support is non-contact with the lower floor and fixed to the filling layer,
The sleeper direction floor receiver is a member having a U-shaped cross section, and an open end thereof is joined to the upper surface of the convex portion of the lower floor, and the rail direction floor receiver is a member having an L shape in cross section, The floor structure of a railway vehicle, wherein a lower end portion of a surface that hangs substantially orthogonal to the upper floor is fixed to the filling layer. 枕木方向に凹部と凸部とが交互に形成された波形鋼板の下床が台枠上に張られ、その下床には床受を介して上床が支持され、前記下床と上床との間に空間を形成し、前記下床の上面に詰物層が敷き詰められ、更にその上に断熱層が設けられた二重床をなす鉄道車両の床構造において、
前記床受は、枕木方向に沿って配置される枕木方向床受と、レール方向に沿って配置されたレール方向床受とを有し、前記枕木方向床受は、前記下床の凸部上面に接合され、前記レール方向床受は、前記下床とは非接触であって前記詰物層に固定されたものであること、
前記枕木方向床受は、前記下床との接触側の前記凹部に対応する位置に切欠部が形成されたものであることを特徴とする鉄道車両の床構造。 A corrugated steel sheet lower floor in which concave and convex portions are alternately formed in the sleeper direction is stretched on a frame, and the upper floor is supported on the lower floor via a floor support, between the lower floor and the upper floor. In the floor structure of a railway vehicle that forms a double floor in which a space is formed, a filling layer is laid on the upper surface of the lower floor, and a heat insulating layer is further provided thereon,
The floor support has a sleeper direction floor support arranged along the sleeper direction and a rail direction floor support arranged along the rail direction, and the sleeper direction floor support is an upper surface of the convex portion of the lower floor. The rail direction floor support is non-contact with the lower floor and fixed to the filling layer,
The floor structure of a railway vehicle, wherein the sleeper direction floor support has a notch formed at a position corresponding to the concave portion on the contact side with the lower floor. 枕木方向に凹部と凸部とが交互に形成された波形鋼板の下床が台枠上に張られ、その下床には床受を介して上床が支持され、前記下床と上床との間に空間を形成し、前記下床の上面に詰物層が敷き詰められ、更にその上に断熱層が設けられた二重床をなす鉄道車両の床構造において、
前記床受は、枕木方向に沿って配置される枕木方向床受と、レール方向に沿って配置されたレール方向床受とを有し、前記枕木方向床受は、前記下床の凸部上面に接合され、前記レール方向床受は、前記下床とは非接触であって前記詰物層に固定されたものであること、
前記枕木方向床受は、前記下床との接触側の前記凸部に対応する位置に切欠部が形成され、枕木方向に見て隣り合う前記切欠部の間には、少なくとも一つの前記凸部に対応する位置に非切欠部が存在し接合されたものであることを特徴とする鉄道車両の床構造。 A corrugated steel sheet lower floor in which concave and convex portions are alternately formed in the sleeper direction is stretched on a frame, and the upper floor is supported on the lower floor via a floor support, between the lower floor and the upper floor. In the floor structure of a railway vehicle that forms a double floor in which a space is formed, a filling layer is laid on the upper surface of the lower floor, and a heat insulating layer is further provided thereon,
The floor support has a sleeper direction floor support arranged along the sleeper direction and a rail direction floor support arranged along the rail direction, and the sleeper direction floor support is an upper surface of the convex portion of the lower floor. The rail direction floor support is non-contact with the lower floor and fixed to the filling layer,
The sleeper direction floor support is formed with a notch at a position corresponding to the protrusion on the side in contact with the lower floor, and at least one of the protrusions between the notches adjacent to each other in the sleeper direction. A floor structure for a railway vehicle, characterized in that a non-notched portion exists and is joined at a position corresponding to.
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