JP4681321B2 - Stainless steel railcar structure - Google Patents

Description

  The present invention relates to a railway vehicle structure having a window frame or an entrance / exit frame.

As a railway vehicle structure having a window frame or an entrance / exit frame, for example, one described in Patent Document 1 is known. This structure includes a window frame disposed outside the vehicle, a blowing plate inside the window frame (inside the vehicle), and a column member having a flange portion disposed inside the blowing plate. In a state where the three sheets are overlapped, they are joined by spot welding.
Japanese Patent Laid-Open No. 08-188152 (FIG. 1)

  However, in the above structure, the window frame protrudes from the blowing plate, which is the outer plate of the vehicle, to the outside of the vehicle, and there is a step, so that the entire vehicle structure lacks smoothness. In addition, the above structure has a problem that it is difficult to achieve both weight reduction and high rigidity because a separate reinforcing member (column material) is required to secure the strength of the opening of the side structure. Furthermore, since the joint between the window frame and the outer plate that are joined discontinuously by spot welding has low water tightness, a separate sealing process is required, which contributes to increased manufacturing costs. Yes.

  An object of the present invention is to provide a railway vehicle structure that is smooth in appearance, light in weight, high in rigidity, and high in water tightness.

A stainless steel railcar structure according to the present invention includes an outer plate disposed outside the vehicle, a frame disposed inside the outer plate, joined to the outer plate, and constituting an outer frame of a window or an entrance, The frame includes a first frame portion extending along the outer plate, and a second frame portion bent to the inside of the outer plate through the bent portion, The reinforcing member is connected to the first frame portion and the second frame portion and forms a hollow structure with the frame, and the bent portion of the frame and the end portion of the outer plate are joined by laser continuous welding. It is characterized by that.

According to the present invention, the window or the entrance / exit frame is disposed inside the outer plate and joined to the outer plate, and the bent portion and the end of the outer plate are joined by laser continuous welding. It is possible to smooth the exterior of the vehicle structure without causing a step on the outer surface of the plate. Further, the reinforcing member is connected to the first frame portion and the second frame portion, and a hollow structure is formed with the frame, so that a lightweight and highly rigid vehicle structure can be obtained. Furthermore, since the bent portion of the frame and the end portion of the outer plate are joined by continuous welding, the welded portion is continuously covered with the weld bead. The weld bead can prevent water and the like from entering the overlapped portion of the outer plate and the first frame, and can improve the water tightness of the welded portion.

  According to the present invention, it is possible to provide a railway vehicle structure that is smooth in appearance, lightweight, highly rigid, and highly watertight.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a stainless steel railcar structure according to the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIG. 1, the railway vehicle structure 1 has a substantially box shape having a space for accommodating passengers therein, and includes a frame 2, a side structure 4, a roof structure 6, and a wife structure 8. Has been. The underframe 2 has a rectangular shape and is located at the bottom of the vehicle structure 1. On the periphery of the frame 2, side structures 4 positioned on both sides of the vehicle in the horizontal direction and wife structures 8 positioned on the front and rear sides of the vehicle are erected so as to surround the frame 2. An arched roof structure 6 is disposed on the upper part of the vehicle structure 1. An air conditioner 7 and a pantograph for cooling and heating the passenger compartment are installed on the roof structure 6.

  The side structure 4 is constituted by joining five side structure blocks 10 and four side entrances 20 alternately in parallel. As shown in FIG. 2, the side structure block 10 includes a curtain plate (outer plate) 12, a window portion 18, a pair of front and rear blowing plates (outer plate) 14, and a waist plate (outer plate) 16 joined together. Configured. The window 18 is disposed at the center of the side structure block 10. The curtain 12 has a length between the side entrances 20 and 20, is disposed above the window 18, the upper edge of the curtain 12 is joined to the roof structure 6, and the lower edge of the curtain 12 The end portions are joined to the upper end portions of the window portion 18 and the blowing plate 14. The waist plate 16 has a length between the side entrance portions 20, 20 and is disposed below the window portion 18, and the upper side end portion of the waist plate 16 is joined to the window portion 18 and the lower side end portion of the blowing plate 14. The lower end of the waist plate 16 is joined to the frame 2. The blowing plate 14 has substantially the same height as the window portion 18, and is disposed on both sides of the window portion 18 between the curtain plate 12 and the waist plate 16, and the upper edge portion of the blowing plate 14 is at the top of the curtain plate 12. Joined to the lower edge, and the lower edge of the blowing plate 14 is joined to the upper edge of the waist plate 16.

  As shown in FIG. 2, the window portion 18 includes a rectangular window 19 made of tempered glass and positioned in the center, and a window frame 15 that surrounds the window 19 and forms an outer frame. The side entrance / exit part 20 includes a door 24 for passengers to get on and off, a side entrance / exit frame 22 that surrounds the door 24 and constitutes an outer frame, and a curtain plate (outer plate) 26. The curtain 26 is disposed on the upper side of the door 24, the lower edge of the curtain 26 is joined to the upper edge of the side entrance frame 22, and the upper edge of the curtain 26 is joined to the roof structure 6. Both sides of the curtain plate 26 are joined to the curtain plate 12 of the adjacent side structure block 10.

  As shown in FIG. 3, the wife structure 8 is disposed on the wife entrance / exit portion 40, wife outer plates (outer plates) 30 and 34 disposed on both sides of the wife entrance / exit portion 40, and the wife entrance / exit portion 40. And a wife outer plate (outer plate) 32. The end face plate 30 and the end face plate 34 are respectively joined to the side structure 4 at the side of the vehicle, and the upper side end portions of the end face plates 30 and 34 are joined to the roof structure 6. The upper end of the end face plate 32 is joined to the roof structure 6, and both sides of the end face plate 32 are joined to the end face plate 30 and the end face plate 34, respectively. The wife entrance / exit section 40 includes a door 42 for communicating between vehicles and a wife entrance / exit frame 44 that constitutes an outer frame surrounding the door 42.

  Next, the joint structure of the window 18, the side doorway 20, and the wife doorway 40 will be described in detail.

  As shown in FIG. 4, a window frame 15 is arranged inside the blowing plate 14. The window frame 15 is a substantially U-shaped member formed by bending a single stainless steel plate, and has a long side (first frame portion) 15a and a short side (second frame) that are parallel to each other. Part) 15b and a connecting part (second frame part) 15c for connecting the long side 15a and the short side 15b. In addition, the long side 15a is extended along the blowing plate 14, and the short side 15b and the connection part 15c are bend | folded inside the blowing plate 14 via the bending part 15d. The long side 15a of the window frame 15 and the blowing plate 14 are overlapped, and one end of the long side 15a is joined to the blowing plate 14 by laser continuous welding B1. In the bent portion 15d, the bent portion 15d located at the other end of the long side 15a and the end portion 14a of the blowing plate 14 are joined by laser continuous welding B2. Further, a reinforcing member 17 for reinforcing the window frame 15 is disposed inside the window frame 15. The reinforcing member 17 connects the long side 15 a and the short side 15 b of the window frame 15, and forms a hollow structure with the window frame 15. Specifically, the reinforcing member 17 has a substantially “L” cross section, and the long side 17 a is perpendicular to the long side 15 a and the short side 15 b so as to cover the opening A of the window frame 15. The outer end of the window frame 15 abuts perpendicularly to the middle of the long side 15a, and the reinforcing member 17 is joined to the short side 15b and the long side 15a by fillet welding, respectively.

  In addition, although the above is description about the connection structure of a part of window frame 15 extended in the vertical direction of a vehicle, and the blowing plate 14, a part of window frame 15 extended in the horizontal direction on the vehicle upper side. The connecting structure of the curtain plate 12, the part of the window frame 15 extending in the horizontal direction on the lower side of the vehicle, and the waist plate 16 is the same, and the description thereof is omitted.

  As shown in FIG. 5, a side entrance / exit frame 22 is arranged inside the blowing plate 14. The side entrance / exit frame 22 is a member formed by bending a single stainless steel plate, and includes a long side (first frame portion) 22a, a short side (second frame portion) 22b, and a long side 22a thereof. A connecting portion (second frame portion) 22c that connects the short side 22b is provided. The long side 22a extends along the blowing plate 14, and the short side 22b and the connecting portion 22c are bent inside the blowing plate 14 via a bent portion 22d. The long side 22a of the side entrance / exit frame 22 and the blowing plate 14 are overlapped, and one end of the long side 22a is joined to the blowing plate 14 by laser continuous welding B3. In the bent portion 22d, the bent portion 22d located at the other end of the long side 22a and the end portion 14b of the blowing plate 14 are joined by laser continuous welding B4. Further, inside the side entrance / exit frame 22, a reinforcing member 28 having a substantially “L” cross section and reinforcing the side entrance / exit frame 22 is disposed. The reinforcing member 28 connects the long side 22 a and the short side 22 b of the side entrance / exit frame 22, and forms a hollow structure with the side entrance / exit frame 22. Specifically, both sides of the reinforcing material 28 abut each other perpendicularly to the long side 22a and the short side 22b of the side entrance frame 22, and the reinforcing material 28 is joined to the long side 22a and the short side 22b by fillet welding, respectively. Yes.

  In addition, although the above description is a description of the connection structure between a part of the side entrance / exit frame 22 extending in the vehicle vertical direction and the blowing plate 14, the side entrance / exit frame 22 extending in the vertical direction of the vehicle A part of the curtain 12, a part of the side entrance / exit frame 22 and the waist plate 16, and a part of the side entrance / exit frame 22 extending horizontally on the upper side of the vehicle are connected to the curtain 26. Since the structure is the same, the description is omitted.

  As shown in FIG. 6, a wife entrance / exit frame 44 is disposed inside the wife outer plate 34. The wife entrance / exit frame 44 is a member formed by bending a single stainless steel plate, and includes a long side (first frame portion) 44a, a short side (second frame portion) 44b, and a long side 44a thereof. A connecting portion (second frame portion) 44c that connects the short side 44b is provided. The long side 44a extends along the end face plate 34, and the short side 44b and the connecting portion 44c are bent inside the end face plate 34 via a bent portion 44d. The long side 44a of the wife entrance / exit frame 44 and the end face plate 34 are overlapped, and one end of the long side 44a is joined to the end face plate 34 by laser continuous welding B5. In the bent portion 44d, the bent portion 44d located at the other end of the long side 44a and the end 34a of the end face plate 34 are joined by laser continuous welding B6. Further, inside the wife entrance / exit frame 44, a reinforcing member 36 having a substantially “L” cross section and for reinforcing the wife entrance / exit frame 44 is disposed. The reinforcing member 36 connects the long side 44 a and the short side 44 b of the wife entrance / exit frame 44, and forms a hollow structure with the wife entrance / exit frame 44. Specifically, both sides of the reinforcing material 36 respectively come into contact with the long side 44a and the short side 44b of the wife entrance / exit frame 44, and the reinforcing material 36 is joined to the long side 44a and the short side 44b by fillet welding, respectively. Yes.

  In addition, although the above is description about the connection structure of a part of the frame 44 for the wife entrances and exits which extend in the vertical direction of the vehicle, and the wife outer plate 34, the frame 44 for the wife entrances and exits extending in the vertical direction of the vehicle Since the connection structure between a part and the wife outer plate 30 and the connection structure between a part of the wife entrance / exit frame 44 extending in the horizontal direction on the upper side of the vehicle and the wife outer plate 32 are the same, description thereof is omitted.

  The window frame 15 and the side entrance / exit frame 22 are arranged inside the blowing plate 14 and are joined to the blowing plate 14, the bent portion 15 d of the window frame 15, the end portion 14 a of the blowing plate 14, and the side doorway. Since the bent portion 22d of the frame 22 and the end portion 14b of the blowing plate 14 are joined by laser continuous welding, there is no step on the outer surface of the blowing plate 14, and the appearance of the smooth side structure 4 is obtained. It is done. Similarly, the wife entrance / exit frame 44 is disposed on the inner side of the wife outer plate 34 and joined to the wife outer plate 34, and the bent portion 44 d of the wife entrance / exit frame 44 and the end portion 34 a of the wife outer plate 34 are made of laser. Since they are joined by continuous welding, a smooth wife structure 8 can be obtained without causing a step on the outer surface of the wife outer plate 34. Further, since these steps are eliminated, it is possible to solve the problem that dust or the like due to the steps tends to accumulate. Furthermore, it is possible to prevent noise generated due to a step during traveling, and to expect the effect of reducing aerodynamic noise of the entire vehicle body.

  Further, the reinforcing member 17 connects the long side 15a and the short side 15b and forms a hollow structure with the window frame 15, and the reinforcing member 28 connects the long side 22a and the short side 22b, Since the frame 22 is used to form a hollow structure, the reinforcing member 36 connects the long side 44a and the short side 44b, and the wife entrance / exit frame 44 forms a hollow structure. Since the strength can be increased and the opening can be reinforced, the rigidity of the blowing plate 14 and the end plate 34 of the railway vehicle structure 1 can be enhanced.

  Furthermore, the bent portion 15d of the window frame 15 and the end portion 14a of the blowing plate 14, and the bent portion 22d of the side entrance / exit frame 22 and the end portion 14b of the blowing plate 14 are joined by laser continuous welding, respectively. These welds are continuously covered with weld beads formed by welding, and the weld beads are long sides 15a of the blowing plate 14 and the window frame 15, and the long sides of the blowing plate 14 and the side entrance frame 22. Water or the like can be prevented from entering the inside of the overlapping portion with 22a, and the water tightness of the welded portion can be improved. Similarly, since the bent portion 44d of the end door entrance frame 44 and the end portion 34a of the end outer plate 34 are joined by laser continuous welding, the welded portion is continuously covered with the weld bead, It is possible to improve water tightness. Therefore, unlike the prior art, the sealing process step at the end of the overlapped portion after spot welding is not required, and the number of work steps can be reduced. This periodic seal repair work is eliminated, and the maintenance cost of the vehicle can be reduced. In addition, since these frames act as reinforcing members, it is not necessary to provide a column member having a flange portion as in the conventional case, and it can be expected that the weight of the vehicle body is reduced.

1 is a perspective view showing an embodiment of a railway vehicle structure according to the present invention. It is a side view which shows the structure of a side structure block. It is a front view which shows the structure of a wife structure. It is sectional drawing which shows the connection structure of the blowing board shown in FIG. 2, the window frame, and the reinforcing material. It is sectional drawing which shows the connection structure of the blowing board shown in FIG. 2, the flame | frame for side doorways, and a reinforcing material. It is sectional drawing which shows the connection structure of the wife outer plate | board shown in FIG. 3, the frame for wife doorways, and a reinforcement.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Railroad vehicle structure, 12, 26 ... Curtain board (outer plate), 14 ... Blowing plate (outer plate), 14a, 14b, 34a ... End part, 15 ... Frame for windows, 15a, 22a, 44a ... Long side ( First frame part), 15b, 22b, 44b ... short side (second frame part), 15c, 22c, 44c ... connecting part (second frame part), 15d, 22d, 44d ... bending part, 16 ... waist plate (outside) Plate), 17, 28, 36 ... reinforcement, 22 ... frame for side doorway, 30, 32, 34 ... wife outer plate (outer plate), 44 ... frame for wife doorway.

Claims (1)

An outer plate disposed outside the vehicle;
A frame which is disposed inside the outer plate and joined to the outer plate to form an outer frame of a window or an entrance;
A reinforcing material for reinforcing the frame,
The frame includes a first frame portion extending along the outer plate, and a second frame portion bent inside the outer plate via a bent portion,
The reinforcing member is connected to the first frame portion and the second frame portion, and forms a hollow structure with the frame,
A stainless steel railway vehicle structure, wherein the bent portion of the frame and the end of the outer plate are joined by laser continuous welding.

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