JP3436347B2 - Railcar structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The claimed invention relates to a structure (body structure) for a vehicle such as a railroad vehicle or a bus.

[0002]

2. Description of the Related Art In recent years, structures such as railway cars have sometimes been constructed as a monocoque structure composed of a plate having a hollow cross section (hollow plate). The side of the vehicle (side wall) without using a bone member called a frame while using a highly rigid plate that has a skin (endothelium / outer skin) inside and outside sandwiching the hollow part.
It constitutes a roof or underframe (floor).

Unlike a so-called frame system composed of a bone and an outer skin, the monocoque structure body receives an external force from the whole body structure. Compared with the frame method, the number of constituent members can be reduced, and therefore, it is possible to assemble in a short period. When a plate having a skin inside and outside is used as described above, there is an advantage that the sound insulating effect and the heat insulating effect are high.

The above hollow plate having a skin inside and outside (for example, a so-called double-skin truss structure shown in FIG. 2) is generally manufactured by extrusion using aluminum or the like as a material. By such processing, thickness about 50mm, width about 500mm, length 2
A hollow plate of about 5 m is manufactured, and its longitudinal direction (direction in which the hollow part extends. Extrusion direction during processing) is oriented in the front-rear direction (length direction / travel direction) of the vehicle, and a plurality of adjacent plates are arranged. Joined in the width direction to form the vehicle side, roof, underframe, or the like. The length of about 25 m is defined so that the plate can be used as it is to cover the entire length of the vehicle.

[0005]

In the case of constructing a vehicle structure as a monocoque structure using the above-mentioned plates, there are advantages in terms of the number of required members, the assembly period, sound insulation and heat insulation, etc. It is not always advantageous in terms of cost. This is because a plate having a skin inside and outside the hollow portion cannot be easily manufactured not only by integrating the skins by welding but also by extruding aluminum or the like. In particular, a long plate having a length of more than 15 m is difficult to manufacture, so that a considerable cost is required.

In addition, such a long plate is not easy to handle before being assembled as a vehicle structure. This is because the rigidity is low because it is considerably longer than the thickness and width, and therefore, it is necessary to pay close attention when transporting and supporting it so that it will not be deformed (bending or twisting) before assembly. . In order to handle without deformation, labor and cost are required.

The invention according to the claims is to reduce the cost by simplifying the production of the above-mentioned vehicle structure using a hollow plate as compared with the conventional case.

[0008]

[Means for Solving the Problems] A railway car according to claim 1.
Both for assembly, by comprising at extrusion including a hollow portion between a skin and out the plate (i.e. above the hollow plate) is arranged toward the extending direction of the hollow portion in the longitudinal direction of the vehicle Side (sidewall), roof or underframe (floor) configured
In the structure for railway vehicles , the above-mentioned plate that is less than the total length of the railway vehicle (for one vehicle ) is one of the railroad vehicles near the middle.
It is characterized in that the side (that is, by the hollow plate as described above), the roof, or the underframe is configured by being connected in the front-rear direction of the railway vehicle at a place .

Since this vehicle structure constitutes a vehicle side, a roof, and an underframe by connecting hollow plates in the front-rear direction of the vehicle, a plate before being made into a structure has a length of at least the entire length of the vehicle. You don't have to manufacture long ones. The above hollow plates used for vehicle structures are extruded
However , if the required length of the plate can be shortened, the extrusion process itself for manufacturing the plate can be facilitated and the cost can be reduced. Regarding extrusion processing, if the product length is short, it becomes easier to maintain the temperature closely related to the ductility and deformation resistance of the material, and the friction and lubrication state between the material being extruded and the die is kept constant. Since it is easy to keep it, the difficulty of processing is greatly alleviated.

If a plate shorter than the entire length of the vehicle is used, it is necessary to connect it in the front-rear direction of the vehicle, but from the point that it is sufficient to extrude the short plate as described above,
There is an advantage over the labor and cost required for the connection. Depending on the position and number of connections, the manufacturing length of the plate can be shortened considerably, and depending on that length, the cost of the plate can be significantly reduced, and the material that was not applicable in the past can be used for the structure. This is because there is a possibility that the plate can be manufactured. The shorter the length, the higher the rigidity of the plate as a material, so there is also the advantage that the plate does not easily undergo inconvenient deformation without extra effort or cost for transportation or support before assembly. . The mechanical strength of the structure can also be sufficiently satisfied by appropriately setting the connection form, the connection position, and the like.

[0011]

[0012]

In the structure for a railway vehicle according to the first aspect, the connection of the plates in the front-rear direction of the vehicle can be achieved by, for example, FIG.
Alternatively, as in (b), the inner and outer skins are butt-welded together, or the inner and outer skins are welded together through a plate-shaped joint.

By welding the skins in this manner, the plates can be firmly connected to each other and sufficient mechanical strength can be imparted to the structure. Since the joint is not used or only the plate-like joint is used, the weight of the structure hardly increases due to the connection. Further, by appropriately selecting the form of welding, the method of implementation, and the position of use of the joint, it is possible to connect them at low cost easily and without deteriorating the appearance of the vehicle.

According to a second aspect of the present invention, there is provided a railway vehicle structure in which the plates are connected to each other in the front-rear direction of the vehicle by welding other than butt welding, particularly through a joint. Each joint 20 ・ 30 ・ of FIG.
40 and 50, the flange portion contacting the inner surface (inward surface, that is, the inner surface of the vehicle) of the outer skin on the front and rear plates of the connecting portion, and the inner surface (inward surface) or the outer surface (outward surface, that is, the outer surface) of the inner skin. A profile (cross section) that has a flange portion that contacts the outer surface of the vehicle) and a web portion that connects the flange portions, and that extends in the vehicle width or height direction (that is, the direction orthogonal to the front-rear direction). H-shaped surface
It is characterized by using metal materials such as I-shape and C-shape (groove shape).

If the plates are connected to each other by welding using such a joint, the connection can be easily performed with a small amount of work, and the vehicle structure can be constructed at low cost. The reason is as follows. First, in connecting plates having the same cross-sectional shape, welding performed via a joint is easier than welding not performed via a joint. The thickness of each inner and outer skin of the plate used for the vehicle structure is 5 mm or less, but it is effective to use a joint to weld such thin members in the same plane. Is. If you butt and weld each member directly without using a joint or back metal,
Since it is not easy in general arc welding, it is necessary to use a special welding means. Secondly, the use of such a joint facilitates the positioning of the front and back plates at the connection. Unlike general butt welding, where it is difficult to hold the two plates so that they are not displaced from each other, when using a joint, the joint is welded to one of the plates from the time it is welded. This is because the joint can be used (that is, the other plate can be attached to the joint) to position the other plate. If the positioning between the plates is easy, it is possible to connect the plates to each other in the correct positional relationship without any trouble. Third, the joint is easy to obtain. As described above, the profile having the two flange portions and the web portion between them continuously can be easily manufactured without using a large cost, whether using a commercially available product or manufacturing by extrusion processing or the like. Because it is available.

It is also preferable from the viewpoint of the appearance of the vehicle to connect the hollow plates by using the joint as described above. One of the flanges of the joint is to contact the inward surface of the outer skin of the plates before and after the connecting portion, and to contact the outward surface of the skin to create a step on the outward surface. Because not. The outer surface of the outer skin is the surface that is exposed to the outside of the vehicle and is directly connected to the appearance of the vehicle.Therefore, there is no step on the surface so that the finish after welding is simple but the appearance of the vehicle It is of great significance in that it does not damage Claim 3
As described above , the structure for railway vehicles is such that the plates are connected in the front-rear direction of the railway vehicle at one location in the vicinity of the middle of the vehicle in the same direction, and at different locations in the same direction. It is characterized in that the welding is performed along the line connecting the teeth in a comb shape. When the above-mentioned plates constituting the structure are connected in the front-rear direction in this manner, as described above, it is possible to obtain a great advantage over the load required for the connection. The first reason is that since the plates are connected near the middle of the vehicle, it is sufficient to manufacture only the plates that are about half the total length of the vehicle. If a hollow plate is obtained as an extruded shape member by extruding aluminum, etc., it will be about half of the total length of the vehicle (that is, dozens of meters in length).
Plates are much easier to manufacture and have a significantly lower manufacturing cost than those having a length of around 25 m over the length of the vehicle. There is a possibility that such a short plate can be manufactured by extrusion using a metal other than aluminum as a raw material. The second reason is that the plates are connected at only one place near the middle of the vehicle. This is because if the connection is performed at only one place, the amount of work required for the connection, such as welding and finishing, can be minimized and an increase in manufacturing period and cost can be suppressed. The third reason is
It is also possible to prevent the mechanical strength of the structure from being lowered due to the connection. This is because the plates are connected by welding along a line connecting a plurality of different positions in the front-rear direction in a comb shape. If welding is performed along a straight line that is orthogonal to the front-back direction of the vehicle, the stress generated by external force may be concentrated on that straight line, but as described above, weld along the comb-teeth line. If so, the concentration of stress and the large growth of minute cracks are effectively prevented.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION FIGS. 1 to 3 show one mode for carrying out the invention. FIG. 1 is an overall view of a passenger vehicle 1,
The same (a) is a plan view, the same (b) is a side view, and the same (c).
[Fig. 2] is a plan view showing the underframes 5 and 6 and is a view taken along the arrow I-I in Fig. 2 (a). FIG. 2 is a transverse cross-sectional view of the vehicle 1. The left half of FIG. 2 (a) is a cross-sectional view taken along the line LL in FIG. 1 (a) (around the middle of the vehicle) and the right half is FIG. )
2 is a detailed sectional view of the hollow plate 10 taken along line RR in FIG. 2B (around the end of the vehicle) and FIG. 2B is a detailed sectional view of part b in FIG. 2A. . And Figure 3
Is a sectional view taken along line III-III in each drawing of FIG.
It is a longitudinal cross-sectional view which shows the detail about 0 connection part 10C.

As shown in FIGS. 1 and 2, a vehicle 1 which is a passenger vehicle of the Shinkansen has a roof 2, a side (side wall) 3 and an underframe (floor).
The vehicle body is composed of structures such as 5 and 6.
As shown in FIG. 1 (b), the window 4A and the entrance / exit 4 are provided in the side 3.
A plurality of Bs are provided, and wheels 8 and their supporting devices (not shown), drive devices (the same) and the like are arranged under the underframes 5 and 6. Since it is a cabin vehicle, a plurality of seats (not shown) and the like are provided inside the structure of the vehicle 1.

In this passenger vehicle 1, as shown in FIG. 2, the structures such as the roof 2, the side 3 and the underframes 5 and 6 are double-skinned.
It is configured by a monocoque structure using a hollow plate 10 (including various shapes and sizes of the plate 10) called a truss structure. These plates 10 are extruded shape members formed by extruding an aluminum alloy, and have a shape similar to a truss structure including a triangle in a cross section as shown in the drawing, and the shape is extruded in the extrusion direction (longitudinal direction). Direction,
That is, it is continuous in the stretching direction of the hollow portion). The direction is oriented in the longitudinal direction (front-rear direction) of the vehicle 1.

The structure of the plate 10 will be described by taking the side 3 shown in FIG. 2 (b) as an example.
The outer skin (outer skin) 11, the inner skin (inner skin) 12 and the diagonal member 13 are integrated, and the hollow portion in the middle is partitioned into a plurality of small spaces 14 having a triangular prism shape. The dimension of the plate 10 in the cross-section is slightly different depending on the portion used, but the thickness (from the outer surface of the outer skin 11 to the inner skin 1
2 to the inward facing surface) 50 to 100 mm, width 4
It is from 00 to 600 mm. Outer skin 11, inner skin 12, diagonal material 1
The thickness of 3 is 2 to 4 mm. The joining of the plates 10 in the width direction of the plates 10, that is, in the direction along the periphery of the vehicle 1 (the width or height direction of the vehicle 1) is performed by joining the projections for joining to the respective end portions in the width direction of each plate 10. Pair 10x and 10y (protrusion 10y
The protrusions 10x can be inserted between the two), and they are inserted and welded together. As for the roof 2 and the underframes 5 and 6, the schematic configuration of the plate 10 and the joining in the width direction are shown in FIG.
Is the same as.

In this passenger vehicle 1, FIGS. 1 (a) to 1 (c) are used.
As described above, each of the roof 2, the side 3 and the plate 10 as the underframe 5 has a length of less than the total length of one vehicle 1.
It is configured by connecting 0A and 10B in the longitudinal direction of the vehicle 1 by welding. Each of the connecting portions 10C between the boards 10A and 10B includes the roof 1, the side 3 and the underframe 5 of the vehicle 1 except for a part of the side 3 where the board 10 is divided by the window 4A and the entrance / exit 4B. It is provided in one place near the middle of the longitudinal direction. That is, each of the plates 10 extending over the entire length of the vehicle 1 is connected to the front and rear at each one connecting portion 10C to form one continuous body. The connecting portions 10C are provided at a plurality of positions having different positions in the longitudinal direction of the vehicle 1 (three positions for the roof 2 and the underframe 5 as shown in FIG. 1, and three sides 3).
Is provided at two places) so that the connecting portion 10C is not continuous between the adjacent plates 10 in the width direction. Therefore, in the vicinity of the middle of the vehicle 1, there is a line for welding between the plates 10 so as to connect a plurality of different positions in the longitudinal direction of the vehicle 1 in a comb-teeth shape (zigzag).

When the plates 10 of the roof 2, the side 3 and the underframe 5 are connected as described above, it is not necessary to use the plate 10 having a length of about 25 m extending over the entire length of the vehicle 1 as a material. The structure can be configured by using the plate 10 having a length of about half as a material. When the plate 10 having a double-skin truss structure having a hollow portion is manufactured by extrusion processing of an aluminum alloy, if the length exceeds 15 m, the manufacturing cost is significantly increased. If it can be shortened, the manufacturing cost of the plate 10 and thus the vehicle 1 can be significantly reduced. At the same time, the labor and cost required for carrying and supporting the plate 10 before assembling it as a structure can be reduced, and the storage location can be easily secured. Board 1
Since there is one connecting portion C for each 0,
The labor and cost required for connection are small, and they do not exceed the above-mentioned cost reduction range in extrusion processing. Since the plates 10 are connected to each other by welding in such a manner that a plurality of portions are comb-shaped, the mechanical strength of the structure is hardly reduced due to the connection.

Plates 10 in the connecting portion 10C (plate 1
Between 0A and 10B. The connection in the length direction) is performed by welding via the joint 20 shown in FIG. The joint 20 has flanges 21 and 22 at both ends (upper and lower sides in the figure), and a web 23 connects the flanges 21 and 22 to each other to form an approximately H shape (flange 2).
The widths of 1.22 are not equal and are close to T-shaped), and are equal to the width of the plate 10 in the direction orthogonal to the length direction of the plate 10 (direction perpendicular to the plane of FIG. 3). It is a shape that extends by the length. In this example, the joint 20 having such a cross section
Is manufactured by extruding an aluminum alloy in the same manner as the plate 10, and is cut into an appropriate length before use. This joint 2
Of the 0, the flange 21 includes the edge portions 21a on both sides and the intermediate portion 2
1b is provided with a step, and when each edge 21a is brought into contact with the inward surface of the outer skin 11 of the plates 10A and 10B sandwiching the connecting portion C, the intermediate portion 21b between them
The outer surface of the outer skin 11 is located on the extension surface of the outer surface of the outer skin 11, and forms a rectangular weld groove between the intermediate portion 21b and the end of each outer skin 11. One of the flanges 22 has a flat shape, and when the position of the flange 21 is determined as described above, the outer surface of the flange 22 contacts the outer surface (the surface facing the outside of the vehicle) of the inner skin 12 of each of the plates 10A and 10B. , I-shaped groove is formed between the inner skin 12, and the flange 22 serves as a backing metal for the welding. Flange 2 in the above groove
1 is welded to each outer skin 11 (the black-painted portion indicates a weld bead; the same applies to the following), and a weld 25 is performed between the flange 22 and both inner skins 12 in the I-shaped groove. 10A and 10B are firmly connected by the connecting portion 10C. In addition, reference numeral 19 in the drawing denotes a plate 10A.
It is a space formed by notching the diagonal member 13 and the like for disposing the joint 20 between 10B.

Since the thickness of the outer skin 11 and the inner skin 12 is several millimeters, it is advantageous to connect the plates 10A and 10B by welding 24 and 25 performed at each groove as described above using the joint 20. Is. Although it is not easy to connect such thin plates by general butt welding,
This is because when the groove is formed as described above, the connection can be made by ordinary arc welding. Also,
After the joint 20 is welded to one of the plates 10A and 10B, the other plate (the plate 10A or 10B) can be positioned by contacting a part of the joint 20 and the plate can be positioned at an appropriate position. It is also because welding can be performed. Joint 20
The flange 21 is a plate 10A, 10B as shown in FIG.
Since it is located on the extension surface of the outer surface of the outer skin 11 of the vehicle and contacts the inward surface of the outer skin 11, the welding 24 is performed, and then the outer surface of the bead is simply flattened. It is also the reason why the above-mentioned welding using the joint 20 is preferred, since it can smooth the surface and improve its appearance.

The plates 10A and 10B can be connected to each other by a connecting portion 10C as shown in FIG. 5 (a) or 5 (b). That is, the outer skins 11 exposed on the surface of the vehicle 1 are connected by I-shaped butt welding 64 and 74, and the inner skins 12 are connected by I
Shape-butt welding 75 (FIG. 5B) or fillet welding 6 using the plate-like joint 60 on the inward surface (the surface facing the inside of the vehicle)
5 (FIG. 5A). However, since the outer skin 11 and the inner skin 12 are as thin as several mm, it is necessary to perform seam welding using foil in order to perform the I-shaped butt welding 64, 74, and 75. A space 19 in the figure is a cutout of the diagonal member 13 for inserting an electrode of a seam welder (not shown).

At the connecting portion 10C, the joint 2 shown in FIG.
Instead of 0, it is also possible to use the joints 30, 40 and 50 of FIG. Both joints use the plates 10 before and after the connecting portion 10C.
A cross section having a flange portion in contact with the inward surface of the outer skin 11 of A · 10B, a flange portion in contact with the outer surface or inward surface of the inner skin 12, and a web portion connecting the flange portions. Is roughly H type or I type
It consists of a T-shaped or C-shaped (U-shaped) profile. Each of the shape members extends in a direction orthogonal to the length direction of the plate 10 (that is, the width or height direction of the vehicle 1) and is also manufactured by extruding an aluminum alloy.

The joint 30 shown in FIG. 4 (a) has an H-shaped cross section in which the flanges 31 and 32 at both ends are formed symmetrically with respect to the web 33, and the flange 2 in the joint 20 of FIG.
As in the case of No. 1, a step is formed on the outer surface of each flange 31, 32. That is, the step on the flange 31 is
The edge portion is in contact with the inward surface of No. 1 and the intermediate portion is located on the extension surface of the outward surface of the outer skin 11, and the step on the flange 31 is also provided symmetrically thereto. When the flanges 31 and 32 are brought into contact with the inward surface of the outer skin 11 and the outer surface of the inner skin 12 and the joint 30 is arranged as shown in the drawing, between the respective flanges 31 and 32 and the outer skin 11 or the inner skin 12. A rectangular weld groove is configured, and each groove is welded 34.
By applying 35, the plates 10A and 10B can be connected.

The joint 40 shown in FIG. 4 (b) has a C-shaped (U-shaped) cross section, and the flanges 41 and 41
It has a cross-sectional shape in which 42 is connected by a web 43. When the joints 40 are arranged by bringing the respective flanges 41 and 42 into contact with the inward surface of the outer skin 11 and the outer surface of the inner skin 12, the flanges 41 and 42 are respectively arranged between the outer skin 11 and the inner skin 12.
Provides backing for the I-shaped welds 44, 45 between.

The joint 50 shown in FIG. 4 (c) is made of an asymmetrical H-shaped cross-section having a T-shaped cross section, and is also composed of flanges 51 and 52 at both ends and a web 53 between them. The flange 51 is brought into contact with the inward surface of the outer skin 11, and the flange 52 is brought into contact with the inward surface of the inner skin 12 (the surface facing the inside of the vehicle). Then, using the flange 51 as a backing metal, I-shaped welding 54 of the end portions of the outer skin 11 is performed, and fillet welding 5 is performed between the edge portion of the flange 52 and the inward surface of the inner skin 12.
By performing step 5, the plates 10A and 10B are connected.

Although the embodiments have been introduced above, it goes without saying that the embodiments of the invention are not limited to these. For example, the invention may be practiced even if the hollow plate is not of the illustrated double-skin truss structure having a triangular small space in the cross section. Further, not all of the roof 2 and the side 3 and the underframe 5 but any part of those structures can be configured as the connecting structure of the hollow plates as described above according to the invention. others,
It can be implemented in various forms, such as implementing the above-described structure in vehicles other than railway vehicles such as buses.

[0032]

According to the vehicle structure described in claim 1, it is not necessary to use a hollow plate having a length not less than the entire length of the vehicle as a constituent material. Thus the hollow of the plate, can be easily manufactured structure of the material at low cost by extrusion <br/>, resulting possibly be produced by conventional was impossible material, especially before assembly There is an advantage that it can be transported without much labor and cost.

[0033]

According to the railcar structure of the first aspect, it is possible to strongly connect the plates to each other and to impart sufficient mechanical strength to the structure with almost no increase in weight.

In the railcar structure according to the second aspect, the plates are connected to each other by welding using a unique joint, so that simple connection can be performed with a small amount of work, and the cost of the vehicle structure is reduced. This is because it is easy to connect thin plates by welding through a joint and by welding other than butt welding, and by using the joint, the plates can be correctly positioned and connected without trouble. ,
The advantage is that the fittings used are low cost and easily available. Since there is no step on the outer surface of the vehicle, there is also an advantage that the appearance of the vehicle can be improved while simplifying the finish after welding. In the structure for a railway vehicle according to claim 3, the above-mentioned advantages are remarkable, and particularly great advantages are brought about. It is sufficient to manufacture only a plate that is about half the length of the vehicle as the material plate, that the connecting work of the plates is performed at only one place in one vehicle, and the mechanical strength of the structure The reason for this is that there is almost no decrease in-.

[Brief description of drawings]

FIG. 1 is an overall view of a passenger vehicle 1 and shows one mode for carrying out the invention. 1A is a plan view, FIG. 1B is a side view, and FIG. 1C is an underframe 5/6.
FIG. 3 is a plan view showing the above, and is a view taken along the line I-I in FIG.

2 is a cross-sectional view of the vehicle 1 of FIG.
The left half of (a) is a sectional view taken along the line L-L in FIG. 1 (a) (around the middle of the vehicle), and the right half is a sectional view taken along the line R-R in FIG. 1 (a) (around the end of the vehicle). It is the one in). 2B is a detailed view of the b portion in FIG. 2A and is a cross-sectional view showing the details of the hollow plate 10.

3 is a cross-sectional view taken along line III-III in each drawing of FIG. 1 and is a vertical cross-sectional view showing details of a connecting portion 10C of the plate 10 by the joint 20. FIG.

4 (a) to 4 (c) are views showing a joint 30 that can be used for the connecting portion 10C in place of the joint 20 shown in FIG.
It is a longitudinal section showing 40 and 50.

5 is a vertical cross-sectional view showing another form (other than FIGS. 3 and 4) that can be used for the connecting portion 10C of the plate 10. FIG.

[Explanation of symbols]

1 vehicle (guest vehicle) 2 roof 3 walls 5.6 frame 10 ・ 10A ・ 10B (including hollow part) plate 10C connection part 11 Outer skin (outer skin) 12 Endothelium (inner skin) 14 Hollow part 20, 30, 40, 50 Joint

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shunji Takahashi 2-18 Wadayamadori, Hyogo-ku, Kobe-shi, Hyogo Kawasaki Heavy Industries, Ltd. Hyogo factory (56) Reference JP-A-8-58578 A) JP-A-2-246863 (JP, A) JP-A-10-329709 (JP, A) JP-A-8-207758 (JP, A) JP-A-8-58583 (JP, A) (58) Survey Fields (Int.Cl. ⁷ , DB name) B61D 17/04

Claims (3)

(57) [Claims] 1. A railroad car having an inner and outer skin and an extruded plate including a hollow portion in the extending direction of the hollow portion.
Side by being arranged toward the longitudinal direction of both, a structure for a railway vehicle roof or underframe is configured, the above-mentioned plate of a length less than the entire length of the railway vehicle, railway vehicle
Connected in the front and rear direction of the railway car at one place near the middle
By being, the side, are configured roof or underframe, the railcar coupling of the plate in the longitudinal direction, and butt welding the inner and outer respectively skins or between inside and outside of each skin together plate-like, A structure for a railway vehicle, which is characterized by being welded through a joint. 2. A railroad car having a plate formed by extrusion processing, which has a skin inside and outside and includes a hollow portion between the inner and outer skins, extends in the extending direction of the hollow portion.
Side by being arranged toward the longitudinal direction of both, a structure for a railway vehicle roof or underframe is configured, the above-mentioned plate of a length less than the entire length of the railway vehicle, railway vehicle
Connected in the front and rear direction of the railway car at one place near the middle
As a result, the side, roof or underframe is configured, and the plates are connected in the front-rear direction of the railcar by welding other than butt welding through a joint. a flange portion in contact with the inner surface of the outer skin before and after the plate has a flange portion in contact with the inner or outer surface of the inner skin, and a web portion connecting between them the flange portion, the direction of the width or height of the rail vehicle A structure for a railroad vehicle, which is characterized in that a profile extending to the inside is used. 3. A railroad car at one location near the middle of the railroad car
The railway vehicle body structure according to claim 1 or 2, wherein the front and rear directions are connected by welding along a line connecting a plurality of different positions in the same direction in a comb shape.