JP2014121908A - Railway vehicle body structure and method for manufacturing railway vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a railway vehicle body structure which can ensure adhesion and can enhance workability thereof, and a method for manufacturing the railway vehicle body structure.SOLUTION: A railway vehicle body structure 1 is equipped with a conjugate 10 which is configured by conjugating a first plate-like member 12, a second plate-like member 14 and a skelton member 16. The conjugate 10 has a mating part T configured in such a manner that an end surface 12a of the first plate-like member 12 and an end surface 14a of the second plate-like member 14 are mated with each other on at least one end sides thereof, and the first plate-like member has an overhang piece 18. A first weld zone W1 is continuously formed on the mating part T between the first and second plate-like members 12, 14, whereby the one end sides of the first and second plate-like members 12, 14 and the skelton member 16 are bonded to each other, and further, a second weld zone W2 crossing the first weld zone W1 is continuously formed.

Description

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

  2. Description of the Related Art As a joined body that constitutes a railway vehicle structure, there is known a joined body in which end surfaces of a pair of plate-like members are brought into contact with each other. In this joined body, it is necessary to form the end faces of the plate-like members to be matched with high accuracy over the entire length in order to ensure the adhesion between the pair of plate-like members. Needed. Therefore, the structure in which the end faces of the pair of plate-like members are brought into contact with each other has a problem that workability is not good.

  Therefore, an overhanging piece (back cutting portion) having a step corresponding to the thickness of the other plate-like member is provided at the end of one plate-like member, and the overhanging piece of one plate-like member is used as the other plate-like member A structure is used in which the portions where the protruding piece of one plate-like member and the other plate-like member are overlapped are welded (see, for example, Patent Document 1).

JP 2009-179318 A

  By the way, in the structure described in the said patent document, when joining a pair of plate-shaped member joined by the overhanging piece to the bone member, the overhanging piece is made along the arrangement direction (butting 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 protruding piece of the plate-like member and the bone member. Therefore, in order to ensure the adhesion between the bone member and the plate-like member, there is a problem that work for filling the gap is required, which takes time.

  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 assembly capable of improving workability while ensuring adhesion, and a method for manufacturing the railway vehicle assembly. To do.

  A railway vehicle structure according to the present invention is a railway vehicle structure including a joined body formed by joining a first plate-like member, a second plate-like member, and a bone member, and the joined body is a first plate-like body. The end surface of the member and the end surface of the second plate-shaped member have a butted portion that is abutted on at least one end side of the first and second plate-shaped members, and the first plate-shaped member is a second plate The first plate member and the second plate have a projecting piece that projects to the second plate member side from the abutting portion with the plate member and faces the main surface of the second plate member. The first welded portion is continuously formed at the abutting portion with the shaped member, and joins the one end side of the first and second plate-like members and the bone member and intersects the first welded portion. Two welds are formed continuously.

  In this railway vehicle structure, the joined body has a butted portion of the first and second plate-like members, and the first plate-like member has a protruding piece. In the railway vehicle structure, the bone member and the first and second plate-like members intersect the first welded portion formed along the abutting portion of the first and second plate-like members, and the first And it joins by the 2nd welding part formed in the one end part side of a 2nd plate-shaped member. That is, in the railway vehicle structure, the second welded portion is formed in a flat portion where no projecting piece is provided. Therefore, in the railway vehicle structure, the adhesion between the first and second plate-like members and the bone member can be ensured. In particular, in the railway vehicle structure, the first and second plate-like members and the bone member are joined by the continuous second welded portion, so that watertightness can be secured. Further, in the railway vehicle structure, since the second welded portion for welding the bone member and the first and second plate-like members does not pass through the overhanging piece, the first and second plate-like members and the bone as in the past are used. No gap is formed between the members. Therefore, in the railway vehicle structure, work for filling the gap is not required, and workability can be improved.

  Further, in this railway vehicle structure, since the first plate-like member has the protruding piece, at least the second welded portion is formed at the abutting portion between the end surfaces of the first and second plate-like members. It is sufficient if a sufficient area can be secured. Therefore, in the railway vehicle structure, it is not necessary to accurately form the end surfaces of the first and second plate-like members over the entire length, and the length for forming the first welded portion can be shortened, thereby reducing the work of butt welding. I can plan. As a result, workability can be improved in the railway vehicle structure.

  In one embodiment, while joining the edge part by the side of the one end part and the 2nd plate-shaped member in an overhanging piece, the 3rd welding part continuing to the 1st welding part may be formed continuously. . With this configuration, in the railway vehicle structure, water tightness and air tightness can be secured in the joined body.

  In one embodiment, the 4th welding part which intersects the 3rd welding part may be formed while joining an overhanging piece and the 2nd plate-shaped member. With this configuration, in the railway vehicle structure, water tightness and air tightness can be further ensured in the joined body.

  A method for manufacturing a railway vehicle structure according to the present invention is a method for manufacturing a railway vehicle structure including a joined body formed by joining a first plate-like member, a second plate-like member, and a bone member. The end face of the plate-like member is abutted at least on one end side, and the end face is in contact with the end face of the second plate-like member in a state where the end face is abutted with the second plate-like member. A first plate-like member is provided having an overhanging piece that projects toward the plate-like member side and faces the main surface of the second plate-like member, and an end surface of the first plate-like member and the second plate The end faces of the plate-like members are butted, a first weld is formed at the butted portion of the first plate-like member and the second plate-like member, the one end side of the first and second plate-like members and the bone While joining a member, the 2nd welding part which cross | intersects a 1st welding part is formed continuously, It is characterized by the above-mentioned.

  According to the present invention, it is possible to improve workability while ensuring adhesion.

1 is a perspective view showing a railway vehicle structure according to an embodiment. It is a perspective view which shows a joined body. It is sectional drawing in the III-III line in FIG. It is a figure explaining the assembly of a joined body. It is a figure explaining the assembly of a joined body.

  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 according to an embodiment. As shown in FIG. 1, the railway vehicle structure 1 includes a floor structure 2, a side structure 3, a roof structure 4, and a wife structure 5. It has a box shape with a space to accommodate it inside.

  The floor structure 2 is disposed at the bottom of the railway vehicle structure 1 as a structure constituting the floor of the vehicle. The side structure 3 and the wife structure 5 are erected so as to surround the left and right edges and the front and rear edges of the floor structure 2 as structures constituting the side part of the vehicle. The side structure 3 is provided with a plurality of door portions 6 (for example, three locations) for passengers / occupants to get on and off.

  In addition, window portions 7 are provided between the door portions 6 and 6 and at both ends of the side structure 3. The wife structure 5 is provided with an entrance / exit 8 for passengers / occupants to move between vehicles. The roof structure 4 is arranged so as to cover the space above the structure of the railway vehicle as a structure constituting the roof portion of the vehicle. The roof structure 4 of the vehicle is provided with an air conditioner, a pantograph (not shown), and the like for adjusting the temperature inside the vehicle.

  Subsequently, the joined body 10 constituting the side structure 3, the roof structure 4, the wife structure 5, and the like of the railway vehicle structure 1 will be described with reference to FIGS. FIG. 2 is a perspective view showing the joined body. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 4 and 5 are diagrams for explaining assembly of the joined body.

  As shown in FIGS. 2 and 3, the joined body 10 includes a first plate-like member 12, a second plate-like member 14, and a bone member 16. The joined body 10 is formed by joining a first plate member 12, a second plate member 14, and a bone member 16 by welding.

  The 1st plate-shaped member 12 and the 2nd plate-shaped member 14 are steel plates, such as a stainless steel (SUS301) board, for example, and have substantially the same thickness. The first plate-like member 12 and the second plate-like member 14 constitute, for example, an outer plate panel. The bone member 16 is made of, for example, stainless steel, and has an L-shaped cross section, for example. The structure of the bone member 16 is not particularly limited, and may be a channel structure having a U-shaped cross section, for example.

  The first plate-like member 12 has a main surface portion 17 and a protruding piece 18. The main surface portion 17 and the overhanging piece 18 are integrally provided. The main surface portion 17 (first plate-like member 12) has an end surface 12a. The end surface 12 a is provided on one end portion side of the first plate-like member 12, and has only to be long enough to abut the end surface 14 a of the second plate-like member 14.

  The overhanging piece 18 is formed by, for example, back cutting. The overhanging piece 18 is provided so as to protrude from the end surface 12 a of the main surface portion 17 in the direction in which the end surface 12 a faces. Specifically, the overhanging piece 18 extends from the end portion of the main surface portion 17 near the center portion of the end surface 12 a so as to protrude from the end surface 12 a along the surface direction of the main surface portion 17. In the present embodiment, the end surface 12a and the overhanging piece 18 form a substantially right angle. The length of the overhanging piece 18 (projection distance from the end surface 12a) may be set as appropriate according to the design.

  As shown in FIG. 3, the overhanging piece 18 is located at a position higher than the main surface portion 17 by the thickness of the second plate-like member 14 (in this embodiment, by the thickness of the main surface portion 17). . The overhanging piece 18 extends substantially parallel to the main surface portion 17. The thickness of the overhanging piece 18 is substantially equal to the thickness of the main surface portion 17, for example.

  In the joined body 10, as shown in FIG. 3, the overhanging piece 18 is a butted portion in a state where the end surface 12a of the first plate member 12 and the end surface 14a of the second plate member 14 are butted. While projecting to the second plate-like member 14 side from T, it faces the main surface 14S of the second plate-like member 14.

  In the joined body 10, the first plate-like member 12, the second plate-like member 14, and the bone member 16 are joined by the first to fourth welded portions W1, W2, W3, and W4. The first weld W1 is a continuous weld that joins the first plate member 12 and the second plate member 14 together. The first weld W1 is formed along the abutting portion T between the end surface 12a of the first plate member 12 and the end surface 14a of the second plate member 14.

  The second welded portion (third welded portion) W <b> 2 is a fillet welded portion that joins the projecting piece 18 of the first plate-like member 12 to the main surface portion 17 and the second plate-like member 14. The second welded portion W2 is formed along the corners of the end 18a of the projecting piece 18 of the first plate-like member 12 and the first and second plate-like members 12, 14. The second welded portion W2 is formed continuously (intersects) with the first welded portion W1.

  The third welded portion (fourth welded portion) W3 is a continuous welded portion that joins the projecting piece 18 and the second plate-like member 14. The third welded portion W3 is formed along the longitudinal direction of the overhanging piece 18. The third welded portion W3 is formed over the portion where the overhanging piece 18 and the second plate-like member 14 overlap and the main surface 14S of the second plate-like member 14.

  The fourth welded portion (second welded portion) W4 is a continuous welded portion that joins the first and second plate-like members 12 and 14 and the bone member 16 together. The fourth welded portion W4 is formed along the extending direction of the bone member 16 on one end side of the first plate-like member 12 and the second plate-like member 14, and the first welded portion W1 and the third welded portion W4. It intersects (substantially orthogonal) with the weld W3.

  Subsequently, an assembly procedure of the joined body 10 (a manufacturing method of the railway vehicle structure 1) will be described with reference to FIGS.

  As shown in FIG. 4, first and second plate-like members 12, 14 are first prepared, and the end surface 12 a of the first plate-like member 12 and the end surface 14 a of the second plate-like member 14 are brought into contact with each other. At the same time, the overhanging piece 18 of the first plate member 12 and the second plate member 14 overlap. Next, continuous welding is performed on the butted portion T between the first plate member 12 and the second plate member 12 by laser welding using, for example, YAG laser light. Thereby, the 1st welding part W1 is formed in the butt | matching part of the 1st plate-shaped member 12 and the 2nd plate-shaped member 12. FIG.

  Subsequently, the end 18a of the projecting piece 18, the main surface portion 17, and the second plate-like member 14 are fillet welded by, for example, laser welding. Thereby, the 2nd welding part W2 following the 1st welding part W1 is formed along the corner part of the overhang | projection piece 18, the main surface part 17, and the 2nd plate-shaped member 14. FIG.

  Subsequently, the projecting piece 18 of the first plate member 12 and the second plate member 14 are continuously welded along the longitudinal direction of the projecting piece 18 by, for example, laser welding. Thereby, the welding part W3 is formed. Finally, what joined the 1st plate-like member 12 and the 2nd plate-like member 12 is piled up with one surface 16S of the bone member 16, and the direction (bone member 16 is extended) which cross | intersects the 1st welding part W1. Continuous welding), for example, by laser welding. Thereby, the 4th welding part W4 is formed. Through the steps as described above, the joined body 10 constituting the railway vehicle structure 1 as shown in FIG. 2 is assembled.

  As described above, in the railway vehicle structure 1 of the present embodiment, the joined body 10 has the butted portion T of the first and second plate-like members 12 and 14 and the first plate-like member 12. Has an overhanging piece 18. In the railway vehicle structure 1, the bone member 16 and the first and second plate-like members 12, 14 are first welds formed along the butted portions T of the first and second plate-like members 12, 14. It joins by the 2nd welding part W2 which cross | intersects the part W1 and is formed in the one end part side of the 1st and 2nd plate-shaped members 12 and 14. FIG. That is, in the railway vehicle structure 1, the second welded portion W <b> 2 is formed in a flat portion where the projecting piece 18 is not provided. Therefore, in the railway vehicle structure 1, the adhesion between the first and second plate-like members 12 and 14 and the bone member 16 can be ensured. In particular, in the railway vehicle structure 1, the first and second plate-like members 12, 14 are joined by the second welded portion W <b> 2 continuous with the bone member 16 on one end side thereof, so that the watertightness and the airtightness are improved. A sealed structure that can be secured can be realized.

  Moreover, in the railway vehicle structure 1 of the present embodiment, the second welded portion W2 that welds the bone member 16 and the first and second plate-like members 12 and 14 does not pass through the overhanging piece 18, so that it is conventional. No gap is formed between the first and second plate-like members and the bone member. Therefore, in the railway vehicle structure 1, work for filling the gap is not required, and workability can be improved.

  Moreover, in the railway vehicle structure 1 of this embodiment, since the 1st plate-shaped member 12 has the overhang | projection piece 18, between end surface 12a, 14a of the 1st and 2nd plate-shaped members 12 and 14 is. The butt portion T only needs to secure at least a region where the fourth welded portion W4 is formed. Therefore, in the railway vehicle structure 1, it is not necessary to form the end faces 12a, 14a of the first and second plate-like members 12, 14 with high accuracy over the entire length, and the length for forming the first welded portion W1 is also short. This makes it possible to reduce the work of butt welding. As a result, workability can be improved in the railway vehicle structure 1.

  Further, in the railway vehicle structure 1 of the present embodiment, the second welded portion that joins the end 18a on the one end side of the projecting piece 18 and the second plate-like member 14 and continues to the first welded portion W1. W2 and the third weld W3 are formed continuously. Thereby, in the railway vehicle assembly 1, in the joined body 10, water tightness and air tightness between the first plate-like member 12 and the second plate-like member 14 can be ensured.

  Further, in the railway vehicle structure 1 of the present embodiment, the overhanging piece 18 and the second plate-like member 14 are joined, and a fourth welded portion W4 that intersects the third welded portion W3 is formed. Thereby, in the railway vehicle assembly 1, the watertightness and airtightness of the first and second plate-like members 12 and 14 and the bone member 16 can be further ensured in the joined body 10. Therefore, in the railway vehicle structure 1, it is not necessary to provide a sealing for ensuring watertightness and airtightness as in the conventional case, and repair work associated with deterioration of the sealing is also unnecessary. As a result, in the railway vehicle structure 1, maintenance can be improved.

  The present invention is not limited to the above embodiment. For example, in the above-described embodiment, only the configuration on the one end side of the first and second plate-like members 12 and 14 in the joined body 10 is shown, but the configuration on the other end side can also be the same.

  In the said embodiment, although the 3rd welding part W3 is formed in the position where the overhang | projection piece 18 and the 2nd plate-shaped member 14 overlap, a 3rd weld part is an edge in the protrusion direction of the overhang | projection piece 18. It may be formed as a fillet weld at the corner between the part and the second plate-like member 14.

  When forming the fourth weld W4, continuous laser welding may be performed after spot welding.

  DESCRIPTION OF SYMBOLS 1 ... Railway vehicle structure, 10 ... Assembly, 12 ... 1st plate-shaped member, 12a ... End surface, 14 ... 2nd plate-shaped member, 14a ... End surface, 14S ... Main surface, 16 ... Bone member, W1 ... 1st 1 welding part, W2 ... 2nd welding part, W3 ... 3rd welding part, W4 ... 4th welding part, T ... butting part.

Claims (4)

A railway vehicle structure including a joined body formed by joining a first plate-like member, a second plate-like member, and a bone member,
The joined body has an abutting portion in which an end surface of the first plate-like member and an end surface of the second plate-like member are abutted at least on one end side of the first and second plate-like members. ,
The first plate-like member projects to the second plate-like member side with respect to the abutting portion with the second plate-like member and faces the main surface of the second plate-like member. Has a protruding piece,
A first welded portion is continuously formed at the abutting portion between the first plate-like member and the second plate-like member;
The one end side of the first and second plate-like members and the bone member are joined, and a second welded portion that intersects the first welded portion is formed continuously. Railway vehicle structure.   While joining the edge part by the side of the above-mentioned one end and the 2nd plate-like member in the above-mentioned overhanging piece, the 3rd welding part continuing to the 1st welding part is formed continuously, It is characterized by the above-mentioned. The railway vehicle structure according to claim 1.   The railway vehicle structure according to claim 2, wherein a fourth welded portion that joins the projecting piece and the second plate-like member and intersects the third welded portion is formed. A method for manufacturing a railway vehicle assembly comprising a joined body formed by joining a first plate-like member, a second plate-like member, and a bone member,
The end face of the second plate-like member is abutted with at least one end side, and the end face is in contact with the end face of the second plate-like member with the second plate-like member. Preparing the first plate-like member having an overhanging piece facing the main surface of the second plate-like member and projecting to the second plate-like member side from the butted portion;
Abutting the end face of the first plate member and the end face of the second plate member;
Forming a first welding portion at the abutting portion between the first plate-like member and the second plate-like member;
The railway vehicle characterized in that the one end side of the first and second plate-like members and the bone member are joined together and a second welded portion intersecting the first welded portion is continuously formed. Manufacturing method of structure.

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