JPS635983Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting device for connecting side structures and lateral structures of a railway vehicle, which mutually connects side structures, an underframe, and a roof structure constituting a car body of a railway vehicle.

In general, in a railway vehicle, as shown in FIGS. 1 and 2, a side structure 1, a roof structure 2 and an underframe 3 serving as a lateral structure are each manufactured separately, and then they are joined together by welding or the like.

That is, the side structure 1 is formed by fixing a plurality of side columns 5 to a side outer plate 4 forming the side surface of the vehicle body by welding or the like,
At the upper end of this side structure 1, the side outer plate 4 is welded to the roof outer plate 6 of the roof structure 2 and the vertical side portion 7a of the long girder 7, and the upper end surface of the side column 5 is welded to the overhanging side 7b of the long girder 7. The side beam 9 fixed to the side edge of the cross beam 8 of the underframe 3 is welded to the side outer plate 4 at the lower end of one side structure, and the lower end surface of the side beam 5 is connected to the upper side of the side beam 9. It was joined by welding.

However, in the above-mentioned conventional coupling device, the side structure 1 simply has the side column 4 fixed to the side outer plate 1, so it is easy to bend around the vertical axis as shown by the thick arrow in Figure 1, so the side structure 1 is easily bent around the vertical axis as shown by the thick arrow in Figure 1. When reversing the entire structure or moving it during assembly, the side structure is curved, making it difficult to work, and if the curvature remains as a permanent strain on the side structure, work must be done to remove the strain. There were some inconveniences. In addition, as shown in Fig. 2, since the side columns 4 of the side structure 1 were welded directly to the overhanging side 7b of the long girder 7 and the upper side of the side beam 9 at point A, the mutual connection became too strong. When a lateral force acts on the side structure as shown by the arrow in Figure 2, stress concentration occurs at the weld at point A, and there is a risk that the weld will suffer fatigue failure.

The present invention has been developed in view of these points.The side structure has high rigidity, is easy to transport and assemble, and has flexibility in the joint between the side structure and the lateral structure, making the joint particularly flexible. It is an object of the present invention to provide a coupling device for connecting a side structure and a lateral structure of a railway vehicle, which can relieve stress concentration on the joint portions of the upper and lower ends of side columns and prevent fatigue failure.

The present invention will be described below with reference to embodiments shown in FIGS. 3 to 6.

Figures 3 and 4 show an embodiment of the present invention.

In the present invention, a horizontally long upper stringer 10 and a lower stringer 11 are fixed to the upper and lower ends of the side skin 4 of the side structure 1, respectively.
The side structure 1 is connected to the roof structure 2 and the underframe 3 via.

To explain further, the upper stringer 10 has a horizontal side 10a.
and a rising side 10b are connected to each other, and a mounting side 10c connected to the horizontal side 10a is fixed to the upper end of the side outer plate 4 by spot welding. One lower longitudinal member 11 has a horizontal piece 11a and a falling side 11b.
The attachment side 11c, which is connected to the horizontal side 11a, is fixed to the lower end of the side outer plate 4 by spot welding. The plurality of side columns 5 are passed between the longitudinal members 10 and 11 and spot welded 12 to the side skin 4, and the upper and lower ends are welded to the sides 10a and 11a of the longitudinal members 10 and 11, respectively. 1
3 has been done.

Side structure 1 and roof structure 2 formed in this way
This means that the upper end of the side structure 1 is brought into contact with the lower inner surface of the long girder 7, and the mounting side 10d connected to the rising side 10b of the upper longitudinal member 10 and the overhanging side 7b of the long girder 7 are spot welded together. 14, and on the other hand, the roof outer panel 6, the longitudinal side 7a of the long girder 7, the side outer panel 4, and the attachment side 10c are jointed together by spot welding 15. In addition, the side structure and the underframe 3 are such that the side beam 9 of the underframe 3 is in contact with the lower inner surface of the side structure 1, and the falling side 1 of the lower longitudinal member 11
Mounting side 11d connected to 1b and upper side 9a of side beam 9
and are mutually hole welded 16, and one side outer plate 4 and side beam 9
The longitudinal sides 9b of the two parts are jointed by spot welding 17 to each other.

Next, the operation of this embodiment will be explained.

Since the side structure 1 has the horizontally long upper stringer 10 and lower stringer 11 fixed at the upper and lower ends with a cross section having a large section modulus, the rigidity is increased and the structure does not curve around the vertical axis. Easy to handle.

In addition, at the joint between the side structure 1 and the roof structure 2, the horizontal side 10a and the rising side 10 of the upper longitudinal member 10 are
An upper rectangular longitudinal section having a rectangular cross section is formed by the protruding side 7b and the vertical side 7a of the long girder 7, and a lower rectangular longitudinal section having a rectangular cross section is also formed at the joint between one side structure 1 and the underframe 3 by the horizontal side 11a and the falling side 11b of the lower longitudinal member 11, the upper side 9a of the side beam 9, and the side outer plate 4. These two rectangular longitudinal sections have flexibility, and when an external force acts on the side structure 1 in the direction of the arrow in Figure 3, they deform so as to tilt in the direction of the external force (see the chain line in Figure 3). Therefore, the external force is used for the above-mentioned deformation of both rectangular longitudinal sections, and the external force applied to the welds 13 between the side column 5 and both longitudinal members 10, 11 is reduced, and stress concentration is alleviated. As a result, fatigue failure of the welds 13 is prevented.

In addition, as shown in FIG. 5, the side columns 5 and each longitudinal member 1
0 and 11 can also be connected by spot welding 19 to the set plate 18, respectively. In addition, as shown in Fig. 6, the lower stringer 1
The attachment side 11c connected to the horizontal side 11a of the side beam 1 is formed by bending it in the opposite way to the above embodiment, and is formed so as to be sandwiched and spot welded between the side outer plate 4 and the vertical side 9b of the side beam 9. You can also do it. The embodiment shown in FIGS. 5-6 also operates in the same manner as the embodiment shown in FIGS. 3-4.

In this way, the device for connecting the side structure and the lateral structure of a railway vehicle according to the present invention has upper and lower longitudinal members attached to the upper and lower ends of the side structure, respectively, which increases the rigidity of the side structure and increases the rigidity around the vertical axis. This eliminates the possibility of bending, making transportation and assembly easier, and since no permanent strain remains on the side outer panels, the appearance can be kept beautiful, and no strain removal work is required. In addition, since a rectangular longitudinal section is provided at each joint between the side structure and the horizontal structure, deformation of the rectangular longitudinal section in the direction of external force will cause welding, especially at the joints between the side columns and each longitudinal member. Stress concentration on the parts is alleviated, fatigue failure of the joint parts is prevented, and the durability of the vehicle body is improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the inside of a car body showing a conventional coupling device, a view taken from the vane arrow in FIG. Fig. 3 is a partially omitted end view showing one embodiment; Fig. 4 is a perspective view of the embodiment shown in Fig. 3; Fig. 5 is a perspective view similar to Fig. 4 showing another embodiment; Fig. 6; FIG. 7 is an end view showing a joint portion between a side structure and an underframe showing still another embodiment. 1... Side structure, 2... Roof structure, 3... Underframe, 4
...Side outer panel, 5... Side pillar, 6... Roof outer panel, 7...
...Long girder, 7b... Overhang side, 9... Side beam, 9a...
...Top side, 9b...Vertical side, 10...Top stringer, 1
0a... horizontal side, 10b... rising side, 10c,
10d...Mounting side, 11...Lower longitudinal member, 11a
...Horizontal side, 11b...Falling side, 11c, 11
d...Mounting side.

Claims (1)

[Scope of utility model registration request] In a coupling device for a side structure and a lateral structure of a railway vehicle, the upper end of the side structure is coupled to the lower inner side of a long girder of a roof structure, and the side beam of an underframe is coupled to the inner lower end of the side structure. , the side structure is fixed to the upper end of the side outer plate with an upper stringer formed by connecting the horizontal side and the rising side with a mounting side connected to the front horizontal side, and the lower end of the side outer plate A lower stringer formed by connecting a horizontal side and a falling side is fixed to the part with a mounting side connected to the horizontal side, and a plurality of lower stringers are attached to the inner surface of the side skin plate and between the two longitudinals. The roof structure and the upper end of the side structure are configured by attaching side columns, and the upper end of the roof structure and the side structure mutually connects the mounting edge connected to the rising edge of the upper stringer and the overhanging edge of the long girder, and also connects the side outer plate. The underframe and the lower end of the side structure are connected by connecting the mounting edge connected to the falling part of the lower stringer and the upper edge of the side beam. 1. A device for connecting a side structure and a lateral structure of a railway vehicle, characterized in that the side structure and the lateral structure are connected by bonding a side shell plate and a vertical side of a side beam.