JP5871361B2 - Method for manufacturing a railway vehicle structure - Google Patents

Description

  The present invention relates to a railway vehicle structure in which the strength of a blowing portion is increased without joining a shear plate to an outer plate.

  For example, as shown in FIG. 4, there is a railway vehicle structure in which a side structure is combined by joining parts such as a structure block. The structure for a railway vehicle is constructed by joining a roof structure at the upper part of such a side structure, a wife structure at the front and rear, and a base frame below it. In the illustrated side structure 100, a vehicle side window block 102, an intermediate window block 103, and a side entrance block 104 are joined between 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, and bone members and the like are joined to the inside of the vehicle body to maintain strength. Has been. In the intermediate window block 103, a shear plate 110 as a reinforcing member is bonded to a blowing portion where shearing force is easily applied to the back surface of the outer plate. The shear plate 110 is a stainless steel plate having a thickness of 1.5 mm with respect to an outer plate having a thickness of 2 mm, for example, and is disposed at the left and right blowing portions of the window opening 120.

JP 2010-012861 A JP 2003-191842 A

  In the conventional railcar structure, the strength of the blowing portion is secured by the shear plate 110, and the shear plate 110 is superimposed on the back surface of the outer plate constituting the intermediate window block 103 and joined by laser welding or the like. Is done. At that time, in order to ensure the strength of the blowing portion, it is necessary that the shear plate 110 is joined to the outer plate as a whole, and the welded portion extends over the entire surface of the shear plate 110. Will become longer. Therefore, the conventional structure for a railway vehicle is not only complicated because the shear plate 110 is attached, but the number of work steps is increased, and the welding work itself is troublesome.

  In order to solve this problem, an object of the present invention is to provide a railway vehicle structure in which the strength of a blowing portion is increased without joining a shear plate.

In the method for manufacturing a railway vehicle structure according to the present invention, a side structure, a roof structure, a wife structure, and a base frame are joined, and the side structure is configured by joining a plurality of blocks divided in the longitudinal direction of the vehicle body. In the method for manufacturing a vehicle structure , the window block forming the side structure includes a curtain panel, a blowing panel, and a waist panel , and the blowing panel is a window corner of a window opening formed in the window block. is intended to include a section, sheet der high strength than the curtain panels and wainscot panels is, the curtain panels and wainscot panels are plates of convex, the吹寄panel is a square-shaped plate the curtain plate panels and an arrangement step of arranging said吹寄panel recessed portion of the left and right wainscot panels, the curtain panels, laser soluble junction of matching the end faces of the 吹寄panel and wainscot panel And having a bonding step for, and a cut forming the window opening by only a portion of the吹寄panel after bonding is cut.
Further, the blowing panel is a plate material made of the same material as the curtain plate panel and the waist plate panel, and is thicker than the curtain plate panel and the waist plate panel, or the curtain panel and the waist plate panel It is the board | plate material of the same board | plate thickness and a material stronger than the said curtain board panel and a waist board panel, It is characterized by the above-mentioned.

  According to the present invention, since the blowing plate that constitutes the blowing portion that had to be bonded to the shear plate is configured by a high-strength plate material, the strength of the blowing portion can be increased without joining the shear plate. It becomes possible to provide an improved structure for a railway vehicle, and in particular, since the blowing panel includes the window corner of the window opening formed in the window block, the strength can be obtained without providing a reinforcing plate at the window corner. Can be secured. Therefore, the work can be simplified by eliminating the need to join the shear plate and the reinforcing plate.

It is the figure which showed the intermediate | middle window block which comprises a side structure. It is the figure which showed the manufacturing process about the intermediate | middle window block of 1st Embodiment. It is the figure which showed the manufacturing process about the intermediate | middle window block of 2nd Embodiment. It is the figure which showed the side structure which comprises the structure for rail vehicles.

  Next, an embodiment of a railway vehicle structure according to the present invention will be described below with reference to the drawings. The railcar structure of the present embodiment is a combination of side structures joined by joining parts such as a structure block as in the conventional example shown in FIG. In particular, it has a feature in the intermediate window block that needs to increase the strength of the blowing portion by the shear plate, and specifically has a feature in that the shear plate is eliminated. First, an intermediate window block that does not require a shear plate will be described.

  The intermediate window block 10 is an outer plate in which the curtain panel 11, the blowing panel 12, and the waist panel 13 are joined, and a large window opening 15 is formed at the center. Conventionally, plate materials corresponding to the curtain panel 11, the blowing panel 12 and the waist panel 13 are made of the same material and the same thickness. However, in this intermediate window block 10, the blowing panel 12 is made of a different plate thickness or different material from the curtain panel 11 and the waist panel 13. That is, a standard strength steel plate (DLT steel plate) is used for the curtain panel 11 and the waist panel 13, and an ultra-high strength steel plate (HT steel plate) is used for the blowing panel 12. And a material having higher strength than the waist plate panel 13.

  For example, even when all the panels use the same stainless steel plate, the plate thickness of the curtain plate panel 11 and the waist plate panel 13 is set to 1.5 mm, and the plate thickness of the blowing panel 12 is set to 3.0 mm. Or even if it is a case where the board thickness of all the panels is made the same, a stainless steel plate with higher intensity | strength is used for the blowing panel 12 rather than the curtain board panel 11 and the waist board panel 13. FIG. The blowing panel 12 is sandwiched between the curtain panel 11 and the waist panel 13 and laser welding is performed along the joining line 18 where the butt end faces overlap each other as shown in FIG.

  A single intermediate window block 10 is formed by the curtain panel 11, the blowing panel 12 and the waist panel 13 joined together. When panels having different plate thicknesses are used, they are joined flush with each other so as not to cause a step on the vehicle body surface side. In the intermediate window block 10, since the strength of the blowing portion where the shearing force is easily applied is increased by the blowing panel 12, it is not necessary to add a shear plate as a reinforcing member. And since the blowing panel 12 only laser welds the joint joint by butt, the welding part is the joint line 18 and the welding distance is short, welding can be simplified, and the work load can be reduced. It was.

  By the way, when the window opening part 15 is formed like the structure for railway vehicles, it is necessary to reinforce the four window corners R where stress concentrates. In the case of the intermediate window block 10, since the window corner R is formed of a DLT steel plate, reinforcing plates must be attached to the four window corners R. Then, next, the structure of the intermediate | middle window block which ensured the intensity | strength to the window corner R is demonstrated.

  FIG. 2 is a diagram illustrating a manufacturing process of the intermediate window block according to the first embodiment. The intermediate window block 20 is formed by joining up and down three strip-like panels having the same length. That is, DLT steel plates are used for the upper curtain panel 21 and the lower waist panel 23, and HT steel plates are used for the middle blowing panel 22. The curtain panel 21, the blowing panel 22, and the waist panel 23 abut each other as shown in the drawing, and laser welding is performed along a joining line 28 where the end surfaces overlap each other. An outer panel is formed by the curtain panel 21, the blowing panel 22 and the waist panel 23.

  The blowing panel 22 is a plate material having a width (dimension in the vertical direction in the drawing) larger than the height dimension of the window opening formed in the intermediate window block 20. Therefore, after the curtain panel 21, the blowing panel 22, and the waist panel 23 are joined, the blowing panel 22 is cut out along the window opening line 25 indicated by a broken line, and a window opening is formed in the center portion. Therefore, in this intermediate window block 20, since the window corners R positioned at the four corners of the window opening are configured by the blowing panel 22 made of HT steel plate, the strength can be ensured without providing a reinforcing plate. . Therefore, the work can be simplified by reducing the number of parts and man-hours.

  Next, FIG. 3 is a diagram showing a manufacturing process of the intermediate window block of the second embodiment. The intermediate window block 30 is configured by a curtain panel 31 and a waist panel 33 having a convex shape, and a rectangular blowing panel 32 disposed between the left and right concave positions. Here again, DLT steel plates are used for the curtain panel 31 and the waist panel 33, and HT steel plates are used for the blowing panel 32. The curtain panel 31, the blowing panel 32, and the waist panel 33 are abutted with each other as shown in the drawing, and laser welding is performed along the joining line 38 where the end faces overlap each other.

  An outer panel is formed by the curtain panel 31, the blowing panel 32 and the waist panel 33, and an opening 35 serving as a window opening is formed at the center. The left and right blowing panels 32 are cut along a window opening line 36 indicated by a broken line so as to expand the opening 35 to the left and right to form a window opening of the intermediate window block 30. Accordingly, even in the intermediate window block 30, the window corners R positioned at the four corners of the window opening are configured by the blowing panels 32 made of HT steel plates, so that the strength can be ensured without providing a reinforcing plate. it can. Therefore, the work can be simplified by reducing the number of parts and man-hours.

As mentioned above, although embodiment of the structure for railcars concerning this invention was described, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning .
In the previous SL embodiment has been shown and described only the configuration corresponding to the intermediate window block 103 shown in FIG. 4, it may be equivalent to the window block 102 shown in FIG.

20 intermediate window block 21 curtain panel 22 blowing panel 23 waist panel 25 window opening line R window corner

Claims (2)

In the method for manufacturing a railway vehicle structure, the side structure, the roof structure, the wife structure and the underframe are joined, and the side structure is configured by joining a plurality of blocks divided in the vehicle body longitudinal direction.
The window block constituting the side structure includes a curtain panel, a blowing panel, and a waist panel , and the blowing panel includes a window corner of a window opening formed in the window block, plate der high strength than curtain panels and wainscot panels is, the curtain panels and wainscot panels are plates of convex, the吹寄panel is rectangular plate, said curtain panels and wainscot panel An arrangement step of arranging the blowing panel in the left and right recessed portions of
A joining step of laser welding a joint portion where the end faces of the curtain panel, blowing panel and waistboard panel are butted together;
A cutting step of forming the window opening by cutting only a part of the blowing panel after joining ;
The manufacturing method of the structure for rail vehicles characterized by having . In the manufacturing method of the structure for rail vehicles described in claim 1,
The blowing panel is a plate material made of the same material as the curtain plate panel and the waist plate panel, and has a plate thickness larger than that of the curtain plate panel and the waist plate panel, or the same plate as the curtain plate panel and the waist plate panel. A manufacturing method of a structure for a railway vehicle, characterized in that it is a thick plate material that is stronger than the curtain panel panel and the waist panel panel .

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