JPH0333574Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a coupling device between the underframe and the side structure of a railway vehicle, and is particularly applicable to a railway vehicle in which the side structure of the railway vehicle extends below the underframe. The present invention relates to an underframe and side structure coupling device that can rigidly couple the underframe and side structure of a vehicle.

[Conventional technology]

The car body of a railway vehicle is assembled into a monolithic structure, and particularly the connection portion between the underframe and the side structure requires strong connection. In some conventional railway vehicles, the side structures were placed on the underframe, and the side structures were directly welded to the underframe (Japanese Patent Laid-Open No. 56-25050).
(see publication). In addition, in other conventional railway vehicles, a lower rail was previously constructed inside the side structure, and this lower rail was placed on the side beam and welded together (see Japanese Patent Application Laid-Open No. 55-99463). .

[Problem that the invention attempts to solve]

However, in the former case, there was a problem in that welding marks appeared as distortions on the surface of the outer panel constituting the side structure, and the appearance was not finished neatly. Further, in the latter case, the weight increases by the amount of the lower rail, and there is a problem that a gap tends to occur between the joint surfaces of the lower rail and the side beam, resulting in poor weldability.

Therefore, the purpose of the present invention is to solve the above-mentioned problems of the conventional technology, and to make it possible to easily connect the underframe and the side structure and to obtain a strong welded connection even for a long car body. An object of the present invention is to provide a coupling device for connecting an underframe and a side structure of a railway vehicle.

[Means for solving problems]

In order to achieve the above object, the present invention provides a vehicle underframe that intersects the opening groove with respect to the inner surface of the flange of the side pillar of the side structure, which is provided with a flange on the outside of the opening groove extending in the vertical direction. In a device for connecting an underframe and a side structure of a railway vehicle, the connecting plate is arranged horizontally and a connecting plate is interposed between the joining surfaces of the underframe and the side beam; A front wall that is sandwiched between the side surface and the side pillar of the side structure and has a long hole extending in the above direction, and a front wall that is bent inward from the upper end of the railway vehicle from the upper end of the front wall and that is attached to the underframe. It is composed of an upper flange that contacts the upper surface of the side beam, and the hole edge of the long hole in the front wall of the connecting plate and the opening edge of the opening groove of the side column are welded and connected to the side beam of the underframe. A plate is characterized by a part of the joint surface being welded together.

[Example of idea]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a coupling device for connecting an underframe and a side structure of a railway vehicle according to the present invention will be described below with reference to the drawings.

Fig. 1 shows a side structure 1 of a railway vehicle from the inside.A required number of side columns 3 are arranged vertically inside an outer panel 2 in which a suitable number of windows of a desired shape are punched out. . As shown in FIG. 2, the side pillar 3 has a cross-sectional shape of approximately Ω, and has an opening groove 4.
Flanges 3a, 3a are formed on both sides of the groove and are erected so that the opening of the groove faces inward of the vehicle body. The outer plate 2 is spot-welded to the outer surface of the side pillar 3 and is integrated, thereby forming the side structure 1 as a whole.

As shown in FIG. 3, the vehicle side structure 1 described above is welded to the side surface of a side beam 6 constituting the underframe 5 of the vehicle via a coupling plate 7.

The coupling plate 7 has an inverted L shape as shown in FIG.
It is composed of a letter-shaped plate, and has a front wall 8,
It has an upper flange 9 perpendicular to this.
A long hole 10 is formed in the center of the front wall 8 along the vertical direction. The width B of the elongated hole 10 is set to be slightly larger than the opening width A of the opening groove 4 of the side post 3. However,
To weld the coupling plate 7 to the side column 3, align the front wall 8 of the coupling plate 7 against the inner surface of the flanges 3a, 3a of the side column 3 as shown in FIG. Both side edges of the hole 10 are bead welded along the weld line 11, and the lower end surface 8a of the front wall 8 and the joint between the upper flange 9 and the side column 3 are welded and connected along the weld lines 12 and 13, respectively.

In this way, in order to assemble the side structure 1, in which the connecting plate 7 is welded to the appropriate position of the side pillar 3, on the underframe 5, the upper flange 9 of the connecting plate 7 on each side pillar 3 is attached to the side beam 3. (see Fig. 3) and weld the appropriate parts together. In the embodiment shown in FIG. 3, a proper position C between the web of the side beam 6 of the channel material and the front wall 8 of the connecting plate 7 is spot welded, and the upper flange of the side beam 6 and the connecting plate 7 are spot welded.
The overlapping end D with the upper flange 9 of the side beam 6 is bead welded, and the overlapping end E between the lower flange of the side beam 6 and the front plate 8 is bead welded.

Note that in the embodiment shown in FIG. It is also possible to form a long hole 10.

FIG. 7 shows an example in which two elongated holes 10, 10 are formed in the front wall 8. That is, when the opening width of the opening groove 4 of the side post 3 is large, two long holes 10
A and 10B are formed in parallel with an interval,
The outer edge of each hole is located slightly outside the shoulder of the opening groove 4. Welding and joining along the welding line 11 is the same as in the previous embodiment.

[Effect of idea]

As is clear from the above description, according to the present invention, a long hole extending vertically is formed in the front wall of the connecting plate that connects the side column and the underframe, and the hole edge of the long hole is Since the opening edges of the opening grooves of the side columns are welded together, the side columns of the side structure can be easily connected to the side beams of the underframe, and the welding strength can be increased. Furthermore, since a connecting plate is provided for each of the several side pillars that make up the side structure, the weight can be significantly reduced compared to the conventional system that uses elongated rails.

[Brief explanation of the drawing]

Figure 1 is a rear view of the side structure of the vehicle seen from the inside;
Figure 2 is a cross-sectional view showing the cross section of the side pillar together with the outer skin, Figure 3 is a side sectional view showing the connection between the side structure and underframe of the vehicle, and Figure 4 is the connecting plate. Perspective view,
Fig. 5 is a front view showing the state in which the coupling plate is welded to the side column, Fig. 6 is a cross-sectional view taken along the - line in Fig. 5, and Fig. 7 is the other side of the coupling plate. It is a front view showing an example. 1... Gutter diagram, 2... Outer plate, 3... Side pillar, 4...
... Opening groove, 5 ... Underframe, 6 ... Side beam, 7 ... Connection plate, 8 ... Front wall, 9 ... Upper flange, 10 ...
...Long hole.

Claims (1)

[Scope of utility model registration request] The underframe of the vehicle is placed horizontally so as to intersect the opening groove with respect to the inner surface of the flange of the side column of the side structure, which has a flange on the outside of the opening groove extending in the vertical direction, and the underframe and the side In a coupling device for connecting an underframe and a side structure of a railway vehicle, which includes a coupling plate interposed between the joint surfaces with the columns; the coupling plate is connected between the outer surface of the side beam of the underframe and the side column of the side structure. a front wall having a long hole extending in the above direction, and an upper flange that is bent inward from the upper end of the front wall and comes into contact with the upper surface of the side beam of the underframe. The hole edge of the long hole in the front wall of the connecting plate and the opening edge of the opening groove in the side column are welded together, and a part of the joint surface between the side beam of the underframe and the connecting plate is welded. A device for connecting an underframe and a side structure of a railway vehicle, characterized in that: