JP2016068788A - Railway vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a railway vehicle body structure in which the number of junctions of members can be reduced and the weight of the vehicle can be saved.SOLUTION: In a railway vehicle body structure which includes an outer plate 11 having an opening 20, and a frame member arranged on the inner side of the outer plate 11 and joined to the outer plate 11, the outer plate 11 is divided into 7 pieces in the vehicle vertical direction, a bent part 15 (15a, 15b) formed by bending to the vehicle inner side is formed on one end in the vehicle vertical direction of each of outer plates 11a-11g, the bent part 15 of one outer plate and a tabular end 16 opposite to the bent part 15 of another outer plate are butted against each other, and the one outer plate and the other outer plate are jointed to each other along the vehicle longitudinal direction at a butted part 30 where both plates are butted against each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a railway vehicle structure that is assembled with a side structure or the like in which each member is abutted and joined.

  As a railway vehicle structure, for example, as shown in FIG. 8, there is a structure in which a side structure is combined by joining parts such as a structure block. Materials used for the railway vehicle structure are steel, stainless steel, aluminum alloy, and the like. And in recent commuter vehicles, stainless steel is mainly used. In this type of railway vehicle structure, a roof structure is joined to the upper part of such a side structure, a wife structure is joined to the front and rear, and a base frame is joined to the bottom structure. In the side structure 100 shown in FIG. 8, a side entrance block 104 is joined between the vehicle end window block 102, the intermediate window block 103, and the window blocks 102 and 103. In the vehicle end window block 102 and the intermediate window block 103, for example, a side outer plate is formed by joining an upper outer plate and a lower outer plate which are divided into upper and lower parts. Or vertical bone).

As described above, the side structure 100 is mainly composed of the outer plate, the horizontal bone, and the vertical bone, and is configured as a structure by connecting them directly or via a gusset (sleeve plate). The members are joined by spot welding, MIG welding, laser welding, or the like.
For example, in the intermediate window block 103, as shown in FIG. 9, the outer plates 111a and 111b divided into two parts are joined by overlapping a part of each end, and the joined outer plates are A plurality of transverse bones 112 having a hat shape as shown in FIG. 10 are joined. The lateral bone 112 is welded to the outer plate 111a or the outer plate 111b by flange portions 113, 113. In addition, the horizontal bone 112 is arrange | positioned in the position shown with a broken line in FIG. Thereafter, although not shown, the intermediate window block 103 is configured by joining a plurality of longitudinal bones on the transverse bone 112 to the outer plate to which the transverse bone 112 is joined.

JP 2010-12863 A

However, in the conventional railway vehicle structure, since the outer plate and the bone member are separately prepared and joined to each other, the number of joining points or joining lines is extremely increased, and the number of work steps is increased.
In addition, since joining of each member (including joining of outer plates) is lap welding, the weight is increased in the overlapped part (becomes dead weight after completion of the vehicle), making it difficult to reduce the weight of the vehicle. I was doing.
Further, in recent railway vehicles, there is a demand for a good vehicle appearance in which welding marks are not noticeable.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a railway vehicle structure that can reduce the number of members to be joined and reduce the weight of the vehicle.

  One embodiment of the present invention made to solve the above-described problems has an outer plate having an opening and a bone member disposed inside the outer plate, and the bone member is joined to the outer plate. In the railway vehicle structure, the outer plate is divided into four or more in the vehicle vertical direction, and a bent portion that is bent on the vehicle inner side is formed at one end portion of the vehicle vertical direction of each outer plate. The bent portion of one outer plate and the plate-like end located on the opposite side of the bent portion of the other outer plate are abutted, and the one outer plate and the other outer plate are In addition, the joints are joined along the vehicle front-rear direction at the abutted portions.

In this railway vehicle structure, since the outer plates are brought into contact with each other and joined, there is no portion that becomes a dead weight after the vehicle is completed, and the weight of the vehicle can be reduced.
Moreover, since a bending part functions as a bone member (horizontal bone) arrange | positioned in the vehicle front-back direction, a junction point or a joint line can be reduced. Therefore, work man-hours can be reduced.
And since the outer plate is divided into four or more in the vehicle vertical direction, sufficient bonding strength is obtained by bonding along the vehicle front-rear direction at the portion where one outer plate and the other outer plate are abutted with each other. Can be secured.
Furthermore, since the outer plates are joined to each other in the vehicle front-rear direction, it is possible to obtain a good vehicle appearance in which the joined portions are not conspicuous.

  In the above-described railway vehicle structure, it is desirable that the one outer plate and the other outer plate are joined by laser welding or laser-arc hybrid welding in which a laser runs in the vehicle front-rear direction from the outside of the vehicle. .

  By doing in this way, since one outer plate and another outer plate can be continuously welded with high accuracy, the bonding strength between the outer plates can be increased. Further, since welding marks are not conspicuous, a very good vehicle appearance can be obtained.

  In the above-described railway vehicle structure, it is desirable that one of the outer plates disposed in the opening is formed with the bent portions at both ends in the vehicle vertical direction.

  By doing in this way, since the bending part which functions as a bone member (horizontal bone) arrange | positioned in a vehicle front-back direction at an opening part can be arrange | positioned more than another part, the opening part which a shearing force is easy to apply is arranged. Strength can be increased. As a result, the strength of the vehicle can be increased. Further, since the strength against out-of-plane deformation can be increased, the appearance of the vehicle is also improved.

  Moreover, in the above-described railway vehicle structure, it is desirable that the bent portion has a closed cross-sectional shape with a part of the outer plate to be joined.

  By doing in this way, the intensity | strength of the part which functions as a bone member (horizontal bone) arrange | positioned in the vehicle front-back direction can be raised. Therefore, the strength of the vehicle can be further increased. Moreover, since the strength against out-of-plane deformation can be further increased, the appearance of the vehicle is further improved.

  Furthermore, in the above-described railway vehicle structure, it is preferable that the bending radius R of the bending portion is twice the thickness t (R = 2t) of the outer plate.

  By doing in this way, the clearance gap produced when outer plates are faced | matched can be kept constant. That is, the gap generated when the outer plates are brought into contact with each other can be managed with high accuracy. As a result, it is possible to increase the bonding accuracy between the outer plates and to ensure a sufficient bonding strength.

  According to the railway vehicle structure according to the present invention, it is possible to reduce the number of joined members and reduce the weight of the vehicle.

It is a figure which shows the intermediate | middle window block of the railway vehicle structure which concerns on embodiment from the vehicle outer side. It is a figure which shows a part of side view of the intermediate | middle window block shown in FIG. It is a figure which shows the state which has arrange | positioned the outer plate | board on the jig | tool. It is a figure which shows the state before and behind welding, (a) represents before welding, (b) represents after welding. It is a figure for demonstrating the curvature before and behind welding, (a) represents before welding, (b) represents after welding. It is a side view which shows the bending part which concerns on a modification. It is a side view which shows the bending part which concerns on a modification. It is a figure which shows the side structure of a railway vehicle. It is a figure which shows the conventional intermediate | middle window block from the vehicle outer side. It is a figure which shows the state in which the horizontal bone is joined to the outer plate.

  Hereinafter, embodiments of a railway vehicle structure according to the present invention will be described in detail with reference to the drawings. As in the conventional example shown in FIG. 8, the rail vehicle structure of this embodiment is a combination of side structures joined by joining parts such as structure blocks. In the present embodiment, the configuration of the intermediate window block will be described as an example.

  Therefore, the intermediate window block will be described with reference to FIG. As shown in FIG. 1, the intermediate window block 3 includes, for example, a side outer plate 11 having a window opening 20 formed by joining seven outer plates, and a bone is provided inside the vehicle body to maintain rigidity. Members are joined. FIG. 1 is a view showing the intermediate window block from the outside of the vehicle.

  The intermediate window block 3 is joined to a stainless steel side outer plate 11 (outer plates 11a to 11g) by a bone member that is a reinforcing member formed of a stainless steel plate material. The bone member has a hat shape bent into a U-shaped cross section. The side outer plate 11 is formed by joining the outer plates 11a to 11g. In the present embodiment, the side outer plate 11 is divided into seven, but it is sufficient that it is divided into more than four. In this way, the side outer plate 11 is divided into four or more in the vehicle vertical direction, and the required bonding strength is ensured only by bonding along the vehicle front-rear direction at the portion where each outer plate is abutted with each other. Because.

  Here, the outer plates 11a to 11g will be described with reference to FIG. FIG. 2 is a view showing a part of a side view of the intermediate window block. The outer plates 11a, 11b, 11d, 11e, 11f, and 11g except for the outer plate 11c may have different lengths (heights) in the vertical direction of the vehicle, but other configurations are basically the same. As shown in FIG. 2, a substantially L-shaped bent portion 15 bent on the vehicle inner side is formed at one end portion of each outer plate in the vehicle vertical direction, and the opposite end portion is a plate-like end portion 16. ing. However, the outer plates 11c and 11d are different in shape at the window opening from other outer plates. Moreover, in the outer plates 11a and 11b and the outer plates 11d to 11g, the positions where the bent portions 15 are formed are upside down. And the bending part 15 is continuously formed in the vehicle front-back direction.

  On the other hand, the outer plate 11c is formed with bent portions 15a and 15b bent at the vehicle inner side at both ends in the vehicle vertical direction. The bent portions 15 a and 15 b have the same shape as the bent portion 15. The bent portions 15a and 15b are also formed continuously in the vehicle longitudinal direction. Such an outer plate 11c is disposed in a part where the window opening 20 is formed.

  Then, the outer plates are butted together and the ends are joined (welded) at the joint 32. Specifically, the plate-like end portion 16 of the outer plate 11a and the corner portion 15c on the vehicle outer side of the bent portion 15 of the outer plate 11b are joined, and the plate-like end portion 16 of the outer plate 11b and the bent portion of the outer plate 11c. The corner 15ac on the vehicle outer side of 15a is joined, the corner 15bc on the vehicle outer side of the bent portion 15b of the outer plate 11c and the plate-like end portion 16 of the outer plate 11d are joined, and the bent portion 15 of the outer plate 11d The vehicle outer corner 15c and the plate-like end 16 of the outer plate 11e are joined, the vehicle outer corner 15c of the bent portion 15 of the outer plate 11e and the plate-like end 16 of the outer plate 11f are joined, A corner 15c on the vehicle outer side of the bent portion 15 of the outer plate 11f and the plate-like end portion 16 of the outer plate 11g are joined. In this way, the side outer plate 11 is formed.

  Here, the outer plates 11a to 11g are joined by laser welding in which a wire is supplied in the vehicle front-rear direction from the outside of the vehicle and a laser is run. Thereby, since each outer plate can be welded continuously and accurately, the joint strength of outer plates can be raised. Further, since welding marks are not conspicuous, a very good vehicle appearance can be obtained. Note that the joining of the outer plates 11a to 11g is not limited to laser welding, but a joining method capable of continuously joining the outer plates (for example, laser-arc hybrid welding, friction stir welding, etc.). If it is. A specific joining procedure will be described later.

  Thus, when each outer plate 11a-11g is joined and the side outer plate 11 is comprised, since the bending part 15 (15a, 15b) is continuously formed in the vehicle front-back direction, vehicle front-back It functions as a bone member (lateral bone) arranged in the direction. Therefore, the lateral bone as a reinforcing member is not necessary, and the operation of joining the lateral bone to the side outer plate 11 can be eliminated. Therefore, it is possible to reduce the number of joined members (joining lines). Moreover, since there is no overlapping part with an outer plate like the conventional horizontal bone, the weight reduction of a vehicle can also be achieved.

  An outer plate 11c having bent portions 15a and 15b formed at both ends in the vehicle vertical direction is arranged in the window opening 20. For this reason, in the part of the window opening part 20, the bending part which functions as a bone member (horizontal bone) arrange | positioned in the vehicle front-back direction can be arrange | positioned more than another part. As a result, it is possible to increase the strength of the window opening 20 that is lower in strength than other portions (a shear force is easily applied). Thereby, the strength of the vehicle can be increased and the strength against out-of-plane deformation can be increased, so that the appearance of the vehicle can also be improved.

  In the present embodiment, the bending radius R of the bending portion 15 (15a, 15b) is twice the thickness t of the outer plate (R = 2t). The bending radius R ′ outside the bent portion 15 (15a, 15b) is R ′ = 3t. For example, if the thickness t of the outer plates 11a to 11g is 2.0 mm, the bending radius R of the bent portion 15 (15a, 15b) is R = 4.0 mm (R ′ = 6.0 mm). By defining the bending radius R of the bent portion 15 (15a, 15b) in this way, the gap 31 (see FIG. 3) generated when the outer plates are brought into contact with each other can be kept constant. That is, the gap 31 generated when the outer plates are brought into contact with each other can be managed with high accuracy. As a result, the joining accuracy between the outer plates can be increased. Therefore, coupled with the fact that the side outer plate 11 is divided into seven, sufficient bonding strength can be secured in the bonding of the outer plates, and a highly rigid vehicle structure can be obtained.

  Next, a procedure for joining the outer plates will be described with reference to FIGS. FIG. 3 is a view showing a state in which the outer plate is arranged on the jig. FIG. 4 is a diagram showing the state of the outer plate before and after welding, where (a) shows before welding and (b) shows after welding. Here, the joining of the outer plate 11c and the outer plate 11d is illustrated. The other outer plates are joined in the same manner.

  First, the outer plates 11c and 11d are disposed on the jigs 50 and 51, respectively, with the vehicle outer surface facing upward. Thereby, the bending part 15b (outer corner | angular part 15bc) of the outer plate 11c and the plate-shaped edge part 16 of the outer plate 11d are faced | matched. At this time, as shown to Fig.4 (a), the jig | tool 50,51 is made so that the butt | matching part 30 may become the highest (it may become a vertex), and the outer plate 11c and the outer plate 11d may be arrange | positioned ( Adjusted). That is, the outer plate 11c disposed on the jig 50 has a bent portion 15b (outer corner portion 15bc) side slightly higher than the bent portion 15a (outer corner portion 15ac) side, and is disposed on the jig 51. The outer plate 11d thus formed is slightly higher on the plate-like end portion 16 side than on the bent portion 15 (outer corner portion 15c) side.

  Then, laser welding is performed by supplying a wire to the butting portion 30 (more precisely, the gap 31 formed in the butting portion 30) and irradiating the laser. This laser welding is performed by running a laser while supplying a wire from the outside of the vehicle in the vehicle longitudinal direction. Thereby, the gap 31 is filled and the outer plate 11c and the outer plate 11d are continuously welded with high accuracy. Accordingly, the bonding strength between the outer plate 11c and the outer plate 11d can be increased. Further, since welding marks are not conspicuous, a very good vehicle appearance can be obtained.

  Here, as shown in FIG. 5A, when the outer plates 11c and 11d are horizontally arranged on the jigs 50 and 51, the joined outer plates 11c and 11d are shown in FIG. As shown in FIG. 4, the laser welded joint 32 is slightly warped toward the outside of the vehicle so that it becomes the bottom (becomes convex toward the inside of the vehicle). If such a warp occurs at each joint portion of each of the outer plates 11a to 11g, a curved side outer plate is formed inside the vehicle (convexly).

  However, in this embodiment, as shown in FIG. 4 (a), the outer plate 11c is slightly higher on the bent portion 15b side than the bent portion 15a side, and the outer plate 11d has a plate-like end portion 16 side on the bent portion 15 side. Also arranged to be a little higher. Thereby, when laser welding is performed, as shown in FIG. 4B, the outer plate 11c and the outer plate 11d can be joined in a horizontal state. When the joining of the outer plates 11a to 11g is completed, the hat-shaped vertical bone is joined at a predetermined position, and the intermediate window block 3 is completed.

  Here, in said embodiment, although the bending part 15 (15a, 15b) is formed in the substantially L shape, the shape of a bending part is not restricted to this. For example, as shown in FIG. 6, it can also be formed in a U-shape that opens to the vehicle outer side (left side of the drawing). Or as shown in FIG. 7, it can also form in the hat shape opened to the vehicle outer side (drawing left side).

  By forming the bent portions 15 (15a, 15b) into such a shape, when the outer plates are joined to each other, the bent portions 15 (15a, 15b) are part of the outer plates to be joined (plate-like portions). And form a closed cross-sectional shape. Therefore, the strength of the bent portion 15 (15a, 15b) that functions as a lateral bone can be increased as compared to the case of the substantially L shape illustrated in the above embodiment. Therefore, the strength of the vehicle can be further increased. Moreover, since the strength against out-of-plane deformation can be further increased, the appearance of the vehicle can be further improved.

  As described above, according to the railway vehicle structure according to the embodiment, since the outer plates 11a to 11g divided into seven in the vehicle vertical direction are abutted and joined to each other, a dead weight is generated after the vehicle is completed. There is no part, and the weight of the vehicle can be reduced. Moreover, since the bending part 15 (15a, 15b) functions as a bone member (lateral bone) arrange | positioned in the vehicle front-back direction, a junction point or a joining line can be reduced. Therefore, work man-hours can be reduced.

  It should be noted that the above-described embodiment is merely an example and does not limit the present invention in any way, and various improvements and modifications can be made without departing from the scope of the invention. In the above-described embodiment, the case where the present invention is applied to the intermediate window block 3 is illustrated, but the present invention can also be applied to other blocks (for example, a vehicle end window block).

  In the above-described embodiment, the shape in which the bent portions are formed at both ends in the vehicle vertical direction is applied to the outer plate 11c. However, instead of the outer plate 11c, the outer plate 11d is used at both ends in the vehicle vertical direction. It can also be made into the shape in which a bending part is formed. In that case, the outer plate 11c may have the same shape as the outer plate 11b.

3 Intermediate window block 11 Side outer plates 11a to 11g Outer plate 15 (15a, 15b) Bending portion 15c (15ac, 15bc) Corner 16 on the outside of the vehicle 16 Plate-shaped end portion 20 Window opening portion 30 Butting portion 31 Gap 32 Joint portion 50 Jig 51 Jig

Claims (5)

In a railway vehicle structure having an outer plate having an opening and a bone member disposed inside the outer plate, the bone member being joined to the outer plate,
The outer plate is divided into four or more in the vehicle vertical direction,
A bent portion that is bent on the inner side of the vehicle is formed at one end portion of each outer plate in the vehicle vertical direction,
The bent portion of one outer plate and the plate-like end located on the opposite side of the bent portion of the other outer plate are abutted, and the one outer plate and the other outer plate are A railway vehicle structure characterized by being joined along the vehicle front-rear direction at the abutted portions. In the railway vehicle structure according to claim 1,
The rail vehicle structure according to claim 1, wherein the one outer plate and the other outer plate are joined by laser welding or laser-arc hybrid welding in which a laser is run in the vehicle front-rear direction from the outside of the vehicle. In the railway vehicle structure according to claim 1 or claim 2,
One of the outer plates arranged in the opening is formed with the bent portions at both ends in the vehicle vertical direction, respectively. In any one railcar structure as described in Claims 1-3,
The rail vehicle structure according to claim 1, wherein the bent portion has a closed cross-sectional shape with a part of the outer plate to be joined. In any one railcar structure as described in Claims 1-4,
The railcar structure according to claim 1, wherein a bending radius R of the bent portion is twice the thickness t (R = 2t) of the outer plate.

Images