JP2020125018A - Railway vehicle body structure - Google Patents

Abstract

To provide a railway vehicle body structure which has an improved strength of a joint between a gable end structure and a roof structure in a collision.SOLUTION: A railway vehicle body structure 1 comprises a gable end structure 4 and a roof structure 6 which are bonded mutually and a rafter member 10 which enforces the roof structure 6 at a lower part of the roof structure 6. The gable end structure 4 has a gable end structure joint surface 4p which expands vertically and parallelly with the gable end structure and the roof structure 6 has a roof structure joint surface 6p which expands vertically and parallelly with the gable end structure. The gable end structure joint surface 4p and the roof structure joint surface 6p are mutually jointed through a rafter member joint part 11 which is integrated with the rafter member 10 and extends upward from the rafter member 10. Therefore, the strength of the roof structure 6 is improved by the rafter member 10 and in a general collision in a cross direction, a force to peel the roof structure 6 from the gable end structure 4 is hardly generated because the gable end structure joint surface 4p of the gable end structure 4 and the roof structure joint surface 6p of the roof structure 6 are vertically parallel with each other. Then, peeling of the roof structure 6 from the gable end structure 4 in a collision is weakened and the strength in a collision is elevated.SELECTED DRAWING: Figure 3

Description

The present invention relates to a railway vehicle body structure.

There has been proposed a railway vehicle body structure having improved strength in an offset collision in which a side end portion of a gable body body in front of the railway vehicle body body collides with an obstacle. For example, Patent Document 1 discloses a railway vehicle structure in which a side structure and a gable structure are joined together through a corner post. The corner post has a right-angled triangular shape in a cross-sectional view. One of the two sides sandwiching the right angle of the right triangle in the cross-sectional view of the corner column is a side structure joint surface that is connected to the side structure. The other side of the two sides sandwiching the right angle of the right-angled triangular shape in the transverse cross-sectional view of the corner column is a wife structure joining surface joined to the wife structure. The right-angled triangular hypotenuse of the corner post in the cross-sectional view functions as a rib between the side structure joint surface and the end structure joint surface.

Japanese Patent No. 3955779

By the way, in the railway vehicle body structure, not only the strength of the joint between the side body and the wife structure at the time of the offset collision but also the strength of the joint between the wife structure and the roof structure at the time of the collision are desired to be improved.

Therefore, an object of the present invention is to provide a railway vehicle structure in which the strength of the joint between the gable structure and the roof structure is improved during a collision.

The present invention is a railway vehicle structure formed by joining a gable structure and a roof structure, which includes a rafter member that reinforces the roof structure below the roof structure, and the gable structure has a gable structure joint surface parallel to the vertical direction. The roof structure has a roof structure joint surface parallel to the vertical direction, and the end structure joint surface and the roof structure joint surface extend upward from the rafter member while being integrated with the rafter member. It is a railway vehicle structure that is joined to each other via.

According to this configuration, in the railcar structure formed by joining the gable structure and the roof structure, the rafter member that reinforces the roof structure is provided below the roof structure, and the gable structure has a gable structure joint surface parallel to the vertical direction. The roof structure has a roof structure joint surface parallel to the vertical direction, and the end structure joint surface and the roof structure joint surface extend upward from the rafter member while being integrated with the rafter member. Are joined to each other via. Therefore, the strength of the roof structure is improved by the rafter members, and the joint structure joint surface of the gable structure and the roof structure joint surface of the roof structure are parallel to each other in the vertical direction, so that when the collision occurs from the general front-back direction, The force to separate the roof structure from the structure is difficult to work. Therefore, peeling of the roof structure from the end structure at the time of collision is reduced, and the strength at the time of collision is improved.

In this case, it is preferable that the rafter member joining portion is a plate member that is integrated with the rafter member and extends upward from the rafter member and is parallel to the vertical direction.

According to this configuration, the rafter member joint portion is a plate member that is integrated with the rafter member and extends upward from the rafter member and is parallel to the vertical direction. Therefore, the rafter member joint portion is sandwiched between the rafter member joint surfaces. The distance to the roof structure joint surface is shortened and the strength at the time of collision is improved.

According to the railcar structure of the present invention, the strength of the joint between the gable structure and the roof structure at the time of a collision is improved.

It is a perspective view showing a rail car structure of an embodiment. It is the perspective view which looked at the junction part of the gable structure and roof structure of the railcar structure of an embodiment from the outside of the railcar structure. It is a longitudinal cross-sectional view of the joint part of the gable body structure and the roof structure of the railway vehicle structure of the embodiment.

Hereinafter, a railcar structure according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a railway vehicle body structure 1 according to a first embodiment of the present invention has a substantially box shape having a space for accommodating passengers therein, and is located on both sides of the railway vehicle body structure 1. , A side structure 2 having windows and doors, a gable structure 4 located at the front and rear of the railcar structure 1, a roof structure 6 located at the top of the railcar structure 1, and a bottom part of the railcar structure 1. And the underframe 8 located. The rail vehicle structure 1 is formed by joining a gable structure 4 and a roof structure 6.

The underframe 8 has a substantially rectangular shape and is arranged at the bottom of the railcar structure 1. On the periphery of the underframe 8, side structures 2 located on both sides and a gable structure 4 located on the front and rear sides of the vehicle are erected so as to surround the underframe 8. A roof structure 6 is arranged above the railway vehicle structure 1 so as to cover a space formed by the side structure 2 and the end structure 4. Hereinafter, in the drawings, the X direction indicates the front-back direction of the railway vehicle body structure 1, the Y direction indicates the width direction toward the front of the railway vehicle body structure 1, and the Z direction indicates the vertical direction of the railway vehicle body structure 1.

As shown in FIGS. 2 and 3, the railcar structure 1 includes a rafter member 10 that reinforces the roof structure 6 below the roof structure 6. The rafter member 10 is a plate material that is bent upward by a bent portion 10a on the side opposite to the end structure 4 and a bent portion 10b on the end side of the end structure 4 in a vertical cross-sectional view from the side of the railcar structure 1. .. In a vertical cross-sectional view from the side of the railcar structure 1, the length of the rafter member 10 extending above the bent portion 10b is longer than the length of the rafter member 10 extending above the bent portion 10a. .. The portion extending above the bent portion 10b is a rafter member joining portion 11 that is integrated with the rafter member 10 and extends upward from the rafter member 10. The rafter member joining portion 11 is a plate member which is integrated with the rafter member 10 and extends upward from the bent portion 10b of the rafter member 10 in parallel with the vertical direction.

The end structure 4 has a end structure joint surface 4p that is parallel to the vertical direction. The roof structure 6 is bent upward at the bent portion 6c of the roof structure 6. The roof structure 6 has a roof structure joint surface 6p parallel to the vertical direction above the bent portion 6c. The end structure joint surface 4p and the roof structure joint surface 6p are welded to each other through the rafter member joint portion 11 that is integrated with the rafter member 10 and extends upward from the rafter member 10. The roof structure joint surface 6p and the rafter member so that the upper end 6e of the roof structure joint surface 6p, the upper end 11e of the rafter member joint portion 11, and the upper end 4e of the wife structure joint surface 4p coincide with each other. The joint portion 11 and the end structure joint surface 4p are overlapped and joined by welding.

According to the present embodiment, in the railcar structure 1 in which the end structure 4 and the roof structure 6 are joined, the rafter member 10 that reinforces the roof structure 6 is provided below the roof structure 6, and the end structure 4 is arranged in the vertical direction. , And the roof structure 6 has a roof structure joint surface 6p parallel to the vertical direction, and the wife structure joint surface 4p and the roof structure joint surface 6p are integrated with the rafter member 10. The rafter members 10 are joined to each other via rafter member joining portions 11 extending upward from the rafter members 10. Therefore, the strength of the roof structure 6 is improved by the rafter members 10, and the end structure joint surface 4p of the end structure 4 and the roof structure joint surface 6p of the roof structure 6 are parallel to each other in the vertical direction. It is difficult for the force to separate the roof structure 6 from the wife structure 4 at the time of a collision from the direction. Therefore, peeling of the roof structure 6 from the end structure 4 at the time of collision is reduced, and the strength at the time of collision is improved.

Further, according to the present embodiment, the rafter member joint portion 11 is a plate member which is integrated with the rafter member 10 and extends upward from the rafter member 10 and which is parallel to the vertical direction. The distance between the sandwiched structure joint surface 4p and the roof structure joint surface 6p sandwiched therebetween is shortened, and the strength at the time of collision is improved.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the scope of the embodiments of the present invention. For example, the shape of the rafter member 10 can be changed appropriately. The mode in which the rafter member joint portion 11 extends upward from the rafter member 10 can be appropriately changed.

DESCRIPTION OF SYMBOLS 1... Rail vehicle structure, 2... Side structure, 4... Gable structure, 4p... Gable structure joint surface, 4e... Upper end part, 6... Roof structure, 6p... Roof structure joint surface, 6c... Bending part, 6e... Upper end part, 8... Underframe, 10... Rafter member, 10a, 10b... Bending part, 11... Rafter member joining part, 11e... Upper end part.

Claims (2)

A rail car structure formed by joining a wife structure and a roof structure,
A rafter member for reinforcing the roof structure below the roof structure,
The gable structure has a gable structure joint surface parallel to the vertical direction,
The roof structure has a roof structure joint surface parallel to the vertical direction,
The railway vehicle body structure wherein the gable structure joint surface and the roof structure joint surface are joined to each other via a rafter member joint portion that is integrated with the rafter member and extends upward from the rafter member. The railcar structure according to claim 1, wherein the rafter member joining portion is a plate member that is integrated with the rafter member and extends upward from the rafter member and that is parallel to the vertical direction.

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