JP2005161918A - Railcar body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a railcar body constituted by hollow material. <P>SOLUTION: A billet 100 has a structure in which material 110 with low strength with a border line C1 sandwiched and material 120 with high strength are layered. The hollow material 150 obtained by pushing and processing the billet 100 is provided with various strength characteristics with the border line C1 sandwiched. A car body 500 is constituted of a side groove 510, a roof groove 520, an end groove 530, and a deck frame 540. Among them, the side groove 510 and the roof groove 520 are constituted by jointing the plurality pieces of hollow material in a width direction. It is possible to improve the appearance of the side groove 510 and provide weight reduction by using the hollow material 150 as hollow material for constituting a side window 515. A portion corresponding to a pier panel portion 516 of the hollow material 150 for constituting the side window 515 and a portion corresponding to a surrounding of a window opening portion are constituted of the material with high strength, and a portion continuous in a longitudinal direction of the car body on an opposite side is constituted of the material with low strength. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle body of a railway vehicle configured using a hollow shape member.

  For example, a hollow member having a structure in which two parallel plate members are connected by a truss is manufactured by extruding a billet made of an aluminum alloy. This hollow shape member is used, for example, as a material for a railway vehicle structure.

FIG. 3 shows a general extrusion process, and a mold for extrusion is composed of a plurality of units 14 and 16 including a die 12 having an opening 11 and equipped with a mandrel 18 and the like.
The billet 30 as a material is pushed into the mold 10 with a large pressure P ₁ and extruded as a hollow shape member 50.

The hollow shape member 50 has a structure in which two parallel plate members 52 and 54 are connected by a truss 56.
The same material is used for the billet 30 for manufacturing the hollow shape member 50, the plate thickness dimension T1 of the _first plate member 52 is uniform, and the plate thickness dimension T2 of the _second plate member 54 is also equal. It is uniform. Similarly the plate thickness T ₃ of the truss 56 also becomes uniform.

For example, Patent Document 1 below discloses that two types of materials are press-fitted into a common mold for extrusion.
JP 11-342416 A

  The object of the present invention is to combine two or more different materials to form a vehicle body using a hollow profile whose strength has been changed according to the purpose, and to improve its weight reduction and appearance. This is to provide a railway vehicle body that can be used.

  The hollow member constituting the vehicle body of the railway vehicle of the present invention is formed by combining two or more metal materials having strength characteristics required for the part of the vehicle body on which the hollow member is installed.

  Of the hollow shape members, those used for the side structure and the roof structure of the vehicle body use a material with high strength for the plate material on the vehicle body surface side, and use a material with low strength for the plate material on the vehicle body inner surface side and the truss. Is. Further, the extruded hollow member can have different plate thickness dimensions corresponding to the required strength characteristics.

  In the present invention, since the hollow member constituting the vehicle body of the railway vehicle is made of a plurality of metal materials having the strength required for the vehicle body part, the thickness of each part of the hollow member is conventionally set. Since each part can be made thinner than those having a uniform thickness, the weight of the vehicle body can be reduced, or the distortion of the vehicle body surface can be reduced to improve the appearance.

  Examples of the present invention will be described below.

  FIG. 1 is an explanatory view showing a first embodiment of the present invention. With reference to FIG. 1, the structure of a hollow member used for a vehicle body of a railway vehicle will be described. The basic structure of the extrusion mold 10 used for the hollow profile constituting the vehicle body is the same as that described in FIG.

Billet 200 used in this embodiment has a high material 210 strength across the boundary line C _2, the lower material 220 are laminated strength. In general, a material with high strength has low extrudability, and a material with low strength has high extrudability.

The billet 200 extruded hollow profile 250 obtained can be provided with different strength properties across the boundary line C _2.

  The hollow shape member 250 has a structure in which a first plate member 252 and a second plate member 254 are connected by a truss 256.

The member 270 extruded from the low strength material of the billet 200 is made of a low strength material and thus has a low strength property. Further, the thickness T ₂₂ of the members as equal to the thickness dimension T ₂₁ of the member 260, the hollow shape member to obtain a strength required for the vehicle body.

  The hollow members made of the members 260 and 270 are arranged on the side structure and the roof structure of the vehicle body to constitute the vehicle body. At that time, the member 260 is disposed on the outer surface side of the vehicle body, and the member 270 is disposed on the inner surface side of the vehicle body.

  According to such a configuration, the member 260 is made of a high-strength material even when various devices or passengers' loads act on the vehicle body to cause out-of-plane deformation on the outer surface of the vehicle body. Therefore, the deformation of the vehicle body surface is small and the occurrence of distortion can be suppressed. From this, the distortion of the surface of the side structure of the vehicle body and the roof structure can be reduced, and the appearance can be improved. In particular, good effects can be obtained in the side structure of the vehicle body.

  In addition, it is possible to reduce the weight of the entire hollow shape member by reducing the thickness of the entire hollow shape member to the limit due to the suppression of the distortion of the surface of the vehicle body.

  2-1 and 2-2 are illustrations showing a second embodiment of the present invention. The structure of the hollow shape member used for the vehicle body of a railway vehicle will be described with reference to FIG. The basic structure of the mold 10 used for the hollow member constituting the vehicle body is the same as that described with reference to FIG.

Billet 100 used in this embodiment has a low material 110 strength across the boundary line C _1, a high material 120 are laminated strength. In general, a material with low strength has high extrudability, and a material with high strength has low extrudability.
The billet 100 extruded hollow profile 150 obtained can be provided with different strength properties across the border C _1.

  That is, the member 160 obtained by extruding the low-strength material 110 in the billet 100 has a structure in which the first plate member 162 and the second plate member 164 are connected by the truss 166.

Since the member 160 is made of a material having low strength, the member 160 has characteristics of low strength. Further, by arbitrarily setting the thickness _{T 11, T 12, T 13,} etc. of the members, it is possible to obtain the intensity corresponding to the request. That is, according to the required strength, the thickness dimension is determined in consideration of the strength of the material itself.

A member 170 extruded from a material having high strength of the billet 100 has a structure in which a first plate member 172 and a second plate member 174 are connected by a truss 176. Since the member 170 is made of a high strength material, it has a high strength characteristic. Further, by arbitrarily setting the thickness dimensions T ₁₅ , T ₁₆ , T _{17 and the} like of the member, it is possible to reduce the weight while ensuring the strength according to the request.

The hollow shape member 150 shown in FIG. 2-2 is made of a member 160 made of a low-strength material and a member 170 made of a high-strength material, and the thickness dimensions T ₁₁ , T ₁₂ , T _{13 of the} member 160 and In this example, the thickness dimensions T ₁₅ , T ₁₆ , and T ₁₇ of the member 170 are set so that both the members 160 and 170 are equivalent. That is, T ₁₁ , T ₁₂ , and T ₁₃ are configured to be thicker than T ₁₅ , T ₁₆ , and T ₁₇ .

  In this way, when materials with different strengths are arranged in the width direction of the hollow shape material, the strength of the material itself is simply changed within a predetermined range by changing the thickness dimension as necessary. Can be made.

  Next, an example in which the hollow shape member 150 is used for a vehicle body of a railway vehicle will be described with reference to FIG. The vehicle body 500 includes a side structure 510, a roof structure 520, a wife structure 530, and a frame 540. Among these, the side structure 510 and the roof structure 520 are configured by arranging and joining a plurality of hollow shapes in the width direction.

  The hollow member of the side structure 510 is formed by removing a portion corresponding to the opening of the side window 515 by machining. The illustrated side window 515 is configured by joining two hollow shapes together. That is, the window opening of the hollow shape member is removed by machining, leaving the blowing portion 516 between the windows, the two hollow shape blowing portions 516 are butted together, and joined by welding, A side window opening is formed.

  By using the hollow shape member 150 as the hollow shape member constituting the side window 515 as described above, the appearance of the side structure 510 can be improved and the weight can be reduced. A portion corresponding to the blowing portion 516 of the hollow shape member 150 constituting the side window 515 and a portion corresponding to the periphery of the window opening portion are made of a material having high strength, and a portion continuous in the longitudinal direction of the vehicle body on the opposite side is made strong. Consists of low materials.

  According to such a configuration, by configuring the side window opening, a large stress acts on the blowing portion 516 as compared to other portions, but the surroundings of the blowing portion and the window opening are around. Since it is made of a material having high strength, deformation that occurs around the blowing portion and the window opening can be suppressed. Therefore, since distortion generated around the side window 515 of the side structure 510 can be reduced, it is possible to improve the appearance of the side structure 510 that is most easily touched in the vehicle body.

  In addition, according to such a configuration, since the strength of the hollow shape material that forms the periphery of the side window is high, the thickness of each part of the hollow shape material can be made as thin as possible, and the overall weight of the vehicle body can also be reduced. it can.

In addition, as for the hollow shape material which comprises the side window 515, it is also considered that only the member on the vehicle body outer surface side of the peripheral part of the blowing part 516 and window opening part is comprised with a high intensity | strength material.
Furthermore, a high-strength beam is installed at a position corresponding to the shoulder of the vehicle body if the material constituting the hollow shape material is high in strength around the joint end portion between the side frame 510 and the roof frame 520. It becomes a structure equivalent to the case, and the strength of the entire vehicle body can be improved.

The member 260 obtained by extruding the high-strength material 210 of the billet 200 is made of a high-strength material, and thus has a high-strength characteristic. Furthermore, by setting a large thickness dimension T ₂₂ of the members, it is possible to obtain the intensity corresponding to the request.

The member 270 extruded from the low strength material of the billet 200 is made of a low strength material and thus has a low strength property. Furthermore, by setting a small thickness dimension T ₂₂ of the members, it is possible to reduce the weight while ensuring the strength corresponding to the request.

Explanatory drawing which shows the hollow shape material of the 1st Example of this invention. Explanatory drawing which shows the hollow shape material of the 2nd Example of this invention. Explanatory drawing which shows the vehicle body of the 2nd Example of this invention. Explanatory drawing of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Extrusion metal mold 110 Material with low strength 120 Material with high strength 150 Hollow shape member 160 Member with low strength 170 Member with high strength 500 Car body 510 Side structure 520 Roof structure 530 Wife structure 540 Underframe

Claims (2)

In the body of a railway vehicle consisting of a side structure, a roof structure, a wife structure, and a frame,
The side structure and the roof structure are constituted by an extruded hollow shape material, and the hollow shape material is arranged so that its extrusion direction coincides with the longitudinal direction of the vehicle body, and the hollow shape material is A railway vehicle body comprising a high-strength material and a low-strength material, wherein a portion of the hollow profile made of a high-strength material is installed on the outer surface side of the vehicle body. In the body of a railway vehicle consisting of a side structure, a roof structure, a wife structure, and a frame,
The side structure is constituted by an extruded hollow shape member, and the hollow shape member is arranged so that an extrusion direction thereof coincides with a longitudinal direction of a vehicle body, and the hollow shape material is a material having high strength. And a low-strength material, and the high-strength material of the hollow shape member forms the periphery of the side window opening and the blowing portion.

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