JP2014162254A - Method of manufacturing railway vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a railway vehicle body structure capable of promoting improvement in adhesion.SOLUTION: The method of manufacturing a railway vehicle body structure 10 includes a step for preparing a first plate-like member 3 containing a back cut part 3b which is overlapped with a second plate-like member 5, a step for forming, at the first plate-like member 3, a through hole H at a position on a welding schedule line WL at which the first and second plate-like members 3, 5 and a bone member 7 are welded, including the back cut part 3b, a step in which the back cut part 3b of the first plate-like member 3 is overlapped with the second plate-like member 5 while the bone member 7 is arranged, and a gap defined with the through hole H of the first plate-like member 3, the second plate-like member 5, and the bone member 7 is filled with a joint member to form an embedded member W3, and a step in which laser welding is performed to run through the embedded part so that the first and second plate-like member 3, 5 and the bone member 7 are welded.

Description

  The present invention relates to a method for manufacturing a railway vehicle structure.

  As a conventional method for manufacturing a railway vehicle structure, for example, a method described in Patent Document 1 is known. In the method for manufacturing a railway vehicle structure described in Patent Document 1, a back cut portion having a step corresponding to the thickness of the other plate member is provided at an end of one plate member, and the back cut portion of the one plate member is provided. Is overlapped with the other plate-like member, and the portion where the back-cut portion of one plate-like member and the other plate-like member overlap is welded.

JP 2009-179318 A

  By the way, in the method described in the above-mentioned patent document, when a pair of plate-like members joined by a back-cutting portion is joined to a bone member, the back-cutting portions are arranged along the arrangement direction (abutting direction) of the pair of plate-like members. When a weld is formed through the gap, a gap is generated between the stepped portion of the plate member and the bone member. Therefore, there exists a problem that the adhesiveness (airtightness, watertightness) of a plate-shaped member and a bone member cannot be ensured.

  An object of this invention is to provide the manufacturing method of the rail vehicle structure which can aim at the improvement of adhesiveness.

  A method for manufacturing a railway vehicle structure according to the present invention includes a joined body including a first plate member, a second plate member, and a bone member, and the bone member is disposed over the first and second plate members. A method for manufacturing a railway vehicle comprising: a step of preparing a first plate-like member having a back-cut portion overlapped with a second plate-like member; and the first plate-like member including a back-cut portion. And the process of forming a through hole in the position on the welding planned line which welds the 1st and 2nd plate-like member and a bone member, The back cut part of the 1st plate-like member, and the 2nd plate-like member A step of superimposing and disposing a bone member, filling a gap defined by the through hole of the first plate-like member, the second plate-like member and the bone member with a joining member to form an embedded portion; And laser welding the second plate member and the bone member so as to pass through the embedded portion. To.

  In this method of manufacturing a railway vehicle structure, in the first plate-like member, a through-hole is formed at a position on the laser irradiation planned line that includes the back cut portion and welds the first and second plate-like members and the bone member. Form. And in the manufacturing method of a railway vehicle structure, the gap defined by the through hole of the first plate member, the second plate member and the bone member is filled with the joining member to form the buried portion, Laser welding is performed to pass. Thereby, in the manufacturing method of the railway vehicle structure, by forming the embedded portion and performing laser welding so as to pass through the embedded portion, it is possible to prevent a gap from being generated in the back cut portion when the welded portion is formed. . Therefore, in the method for manufacturing a railway vehicle structure, it is possible to improve the adhesion.

  In one embodiment, the through hole is sized so that the end surface of the second plate-shaped member is located on the inner side when viewed from the overlapping direction when the back cut portion is superimposed on the second plate-shaped member. It is preferable to form. Thereby, in the manufacturing method of a railway vehicle structure, an embedded portion that more closely fills the gap can be formed. Therefore, in the method for manufacturing a railway vehicle structure, it is possible to further improve the adhesion.

  According to the present invention, the adhesion can be improved.

It is a perspective view which shows the rail vehicle structure manufactured by the manufacturing method of the rail vehicle structure which concerns on one Embodiment. It is a perspective view which shows a joined body. It is the III-III sectional view taken on the line in FIG. It is a figure which shows the process of the manufacturing method of a railway vehicle structure. It is a figure which shows the process of the manufacturing method of a railway vehicle structure. It is a figure which shows the process of the manufacturing method of a railway vehicle structure. It is a figure which shows the process of the manufacturing method of a railway vehicle structure.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  FIG. 1 is a perspective view showing a railway vehicle structure manufactured by a method for manufacturing a railway vehicle structure according to an embodiment. As shown in FIG. 1, the railway vehicle structure 10 includes a floor structure 11, a side structure 12, a roof structure 13, and a wife structure 14, and these structures are joined to each other, thereby It has a box shape with a space to accommodate it inside.

  The floor structure 11 is disposed at the bottom of the railway vehicle structure 10 as a structure constituting the floor of the vehicle. The side structure 12 and the wife structure 14 are erected so as to surround the left and right edges and the front and rear edges of the floor structure 11 as structures constituting the side part of the vehicle. The side structure 12 is provided with a plurality of door portions 15 (for example, three locations) for passengers / occupants to get on and off.

  In addition, window portions 16 are provided between the door portions 15 and 15 and at both ends of the side structure 12. The wife structure 14 is provided with an entrance / exit 17 for passengers / occupants to move between vehicles. The roof structure 13 is disposed as a structure constituting the roof portion of the vehicle so as to cover the space above the structure of the railway vehicle. The roof structure 13 of the vehicle is provided with an air conditioner, a pantograph (not shown) and the like for adjusting the temperature inside the vehicle at the top.

  Next, the joined body 1 constituting the side structure 12, the roof structure 13, the wife structure 14, and the like of the railway vehicle structure 10 will be described with reference to FIGS. 2 and 3. FIG. 2 is a perspective view showing the joined body. 3 is a cross-sectional view taken along line III-III in FIG.

  As shown in FIGS. 2 and 3, the joined body 1 includes a first plate-like member 3, a second plate-like member 5, and a bone member 7. The joined body 1 is formed by joining a first plate member 3, a second plate member 5, and a bone member 7.

  The 1st plate-shaped member 3 and the 2nd plate-shaped member 5 are steel plates, such as a stainless steel (SUS301) board, for example, for example, have substantially the same thickness. The 1st plate-shaped member 3 and the 2nd plate-shaped member 5 comprise an outer plate panel, for example. The bone member 7 is made of, for example, stainless steel and has, for example, a cross-sectional hat shape. The structure of the bone member 7 is not particularly limited. For example, the cross section may have an L shape, or the cross section may have a U shape.

  The first plate-like member 3 has a main surface portion 3 a and a back-cut portion 3 b that is overlapped with the second plate-like member 5. The main surface portion 3a and the back cut portion 3b are provided integrally. The back-cut portion 3b is provided along one side of the main surface portion 3a. The back cut portion 3b is formed by, for example, back cut processing.

  As shown in FIG. 3, the back-cut portion 3b is positioned higher than the main surface portion 3a by the thickness of the second plate-like member 5 (in this embodiment, by the thickness of the main surface portion 3a). . The back cut portion 3b extends substantially parallel to the main surface portion 3a. The thickness of the back cut portion 3b is substantially equal to the thickness of the main surface portion 3a, for example.

  In the joined body 1, the back-cut portion 3 b faces the main surface 5 s of the second plate-like member 5 as shown in FIG. 3. The length of the back-cut portion 3b (the length of the portion overlapping the second plate-like member 5) may be set as appropriate according to the design.

  In the joined body 1, the first plate-like member 3, the second plate-like member 5, and the bone member 7 are joined by the first welded portion W1, the second welded portion W2, and the embedded portion W3. The first weld W1 is a continuous weld that joins the first plate-like member 3 and the second plate-like member 5 together. The first welded portion W1 follows the extending method of the back-cut portion 3b of the first plate-like member 3 (along the overlapping portion of the first plate-like member 3 and the second plate-like member 5). ) Is formed.

  The second weld W2 is a continuous weld that joins the first and second plate-like members 3 and 5 and the bone member 7 together. The second welded portion W2 is formed along the extending direction of the bone member 7 on one end side of the first plate-like member 3 and the second plate-like member 5, for example. Cross (substantially orthogonal).

  The buried portion W <b> 3 is provided at a position corresponding to the back-cut portion 3 b of the first plate-like member 3. The buried portion W3 has a gap S (see FIG. 5B) defined by the through hole H, the second plate-like member 5 and the bone member 7 provided in the first plate-like member 3, and is formed by the joining member. It is buried and formed. The through hole H is formed at a position through which the second welded portion W2 passes. That is, the second welded portion W2 intersects the buried portion W3.

  Subsequently, an assembly procedure of the joined body 1 (a manufacturing method of the railway vehicle structure 10) will be described with reference to FIGS. 4-7 is a figure which shows the process of the manufacturing method of a railway vehicle structure.

  First, the first plate-like member 3, the second plate-like member 5 and the bone member 7 having the back-cut portion 3b are prepared. Next, as shown in FIG. 4, a through hole H is formed in the back cut portion 3 b of the first plate-like member 3. Specifically, the through hole H includes the back-cut portion 3b and is formed on a portion where the second welded portion W2 is formed, that is, on the planned welding line WL through which the laser L (see FIG. 7) passes. . When the through hole H is overlapped with the second plate-like member 5, the end surface 5a of the second plate-like member 5 is located on the inner side when viewed from this overlapping direction, and the first plate-like The member 3 is formed in a size including a part of the main surface portion 3a.

  Next, as shown in FIG. 5, the first plate member 3, the second plate member 5, and the bone member 7 are assembled. Specifically, the back plate 3b of the first plate-like member 3 and the second plate-like member 5 are overlapped, and, for example, on one end side of the first and second plate-like members 3 and 5, It arrange | positions so that the bone member 7 may be extended in the arrangement | positioning direction of the 1st and 2nd plate-shaped members 3 and 5. FIG. That is, the bone member 7 is disposed across the first plate member 3 and the second plate member 5. In the present embodiment, the first plate-like member 3 and the second plate-like member 5 are welded by spot welding to form the first spot welded portion SW1, and the first and second plate-like members. 3 and 5 and the bone member 7 are welded by spot welding, and 2nd spot welding part SW2 is formed.

  Subsequently, as shown in FIG. 6, the gap S defined by the through hole H, the second plate member 5, and the bone member 7 formed in the first plate member 3 is filled. Specifically, arc welding in which, for example, a filler wire (joining member) is thrown into the gap S is performed, and the embedded portion W3 is formed in the gap S. The embedded portion W3 is preferably formed by melting at least a part of the second plate-like member 5 and the bone member 7.

  Subsequently, as shown in FIG. 7, the first plate-like member 3 and the second plate-like member 5 are continuously welded by laser welding with a laser L to form a first welded portion W1. Specifically, laser welding is performed so as to pass through the first spot weld SW1, and the first weld W1 is formed. Thereby, the 1st plate-shaped member 3 and the 2nd plate-shaped member 5 are joined.

  Finally, the first and second plate-like members 3 and 5 and the bone member 7 are continuously welded by laser welding using a laser L to form a second welded portion W2. Specifically, laser welding is performed so as to pass through the second spot welded part SW2 and the embedded part W3, thereby forming the second welded part W2. Thereby, the 1st and 2nd plate-shaped members 3 and 5 and the bone member 7 are joined.

  As described above, in the manufacturing method of the railway vehicle structure 10 of the present embodiment, the first plate-like member 3 includes the back-cut portion 3b and the first and second plate-like members 3 and 5 and the bone member. A through hole H is formed at a position on a planned welding line WL for welding 7. And in the manufacturing method of the rail vehicle structure 10, the space | gap S defined by the through-hole H of the 1st plate-shaped member 3, the 2nd plate-shaped member 5, and the bone member 7 is filled up with a joining member, and it is embedded part W3. And laser welding is performed so as to pass through the embedded portion W3. Thereby, in the manufacturing method of the railway vehicle structure 10, by forming the embedded portion W3 and performing laser welding so as to pass through the embedded portion W3, a gap is generated in the back cut portion 3b when the welded portion is formed. Can be prevented. Therefore, in the manufacturing method of the railway vehicle structure 10, the adhesion can be improved. As a result, the railcar structure 10 can realize a sealed structure that can ensure watertightness and airtightness.

  In the present embodiment, the through hole H has the end surface 5a of the second plate-like member 5 positioned on the inner side when the back-cut portion 3b is overlaid on the second plate-like member 5. The size is to be. Thereby, in the manufacturing method of the rail vehicle structure 10, the space | gap S can be filled more densely. Therefore, in the manufacturing method of the railway vehicle structure 10, the adhesion can be further improved.

  The preferred embodiments of the present invention have been described above. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  In the above embodiment, the first plate-like member 3 and the second plate-like member 5 are welded by spot welding to form the first spot welded portion SW1, and the first and second plate-like members 3, 5 and the bone member 7 are welded by spot welding to form the second spot welded part SW2, but the spot welded part may not be formed.

  DESCRIPTION OF SYMBOLS 1 ... Joint body, 3 ... 1st plate-shaped member, 3b ... Back cutting part, 5 ... 2nd plate-shaped member, 5a ... End surface, 7 ... Bone member, 10 ... Railway vehicle structure, H ... Through-hole, W3 ... buried part, WL ... planned welding line.

Claims (2)

A manufacturing method of a railway vehicle assembly comprising a joined body in which a bone member is arranged across the first and second plate members, the first plate member, a second plate member, and a bone member. ,
Preparing the first plate-like member having a back-cut portion superimposed on the second plate-like member;
Forming a through hole at a position on a planned welding line for welding the first and second plate-like members and the bone member in the first plate-like member;
The back plate and the second plate member of the first plate member are overlapped with each other and the bone member is arranged, and the through hole of the first plate member, the second plate shape A step of filling a gap defined by the member and the bone member with a joining member to form a buried portion;
And a step of laser welding the first and second plate-like members and the bone member so as to pass through the embedded portion.   The through hole is formed in such a size that the end face of the second plate-like member is located on the inner side when viewed from the overlapping direction when the back cut portion is overlapped with the second plate-like member. The method for manufacturing a railway vehicle structure according to claim 1.

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