JP2012025324A - Body structure for railway vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the strength of an upper side corner part of a side entrance/exit where a door stop post crosses an upper side horizontal part of the side entrance/exit without using a reinforcing member.SOLUTION: A side body structure 1 is constituted by arranging a plurality of extruded shapes 2 so that an extruding direction may be a vehicle body longitudinal direction. The extruded shapes 2 are cut to form the side entrance/exit 1A in the side body structure 1. An upper surface part of the side entrance/exit 1A is constituted by utilizing end faces of the extruded shapes 2 or a side surface of a web plate part 2c. The door stop post 11 is provided to close cut surfaces of the extruded shapes 2 forming front and rear surface parts of the side entrance/exit 1A. The door stop port 11 includes a first part 11A extending from a lower end part to an upper end part of the side entrance/exit 1A and a second part 11B which is arranged at a part corresponding to an upper side corner part of the side entrance/exit 1A, forms a curved corner part of the side entrance/exit 1A and has an inner peripheral surface to be a surface continuous to the upper surface part of the side entrance/exit.

Description

  The present invention relates to a structure of a railway vehicle, and more particularly to a structure of an upper corner portion of a side doorway.

  Conventionally, when a side structure of a railway vehicle is manufactured using an extruded shape of an aluminum alloy, the extruded shape is arranged so that the extrusion direction of the extruded shape coincides with the longitudinal direction of the vehicle body. When the door is formed, door-end pillars are arranged at both front and rear ends of the side doorway, and the ends of the extruded shape members are covered with the door-end pillars. On the other hand, the upper horizontal portion of the side entrance is a structure in which the extruded shape member has two face plate portions and a web plate portion that connects them, and therefore, by using the face plate portion or the web plate portion, Special members are not required.

  In the case of such a structure, it is necessary to reduce the concentration of stress at the upper corner of the side doorway where the door column and the upper horizontal part of the side doorway intersect. Therefore, a substantially triangular reinforcing member with a curved surface facing the side doorway is fixed to the upper corner by welding separately.

  Further, there has also been proposed one in which an edge member (frame member) is friction stir welded over the entire periphery of the side doorway (see, for example, Patent Documents 1 and 2).

Japanese Patent No. 3575749 JP 2008-126782 A

When the reinforcing member is provided by welding to the upper corner portion of the side doorway, there are the following problems.
・ The amount of welding increases, which is disadvantageous in terms of cost.
・ The amount of welding increases, thermal distortion due to welding occurs, and the appearance of the outer plate deteriorates.
A contact point between the reinforcing member, the door column and the upper horizontal portion of the side doorway becomes a welded portion, and the welded portion concentrates on a portion where the acting stress increases, which is disadvantageous in terms of strength.

  Also, the ones described in Patent Documents 1 and 2 are disadvantageous in terms of cost because the length of the friction stir welding part becomes long.

  The present invention uses a reinforcing member for the strength of the upper corner portion of the side doorway where the door column and the upper horizontal portion of the side doorway intersect without providing an edge member (frame member) over the entire circumference of the side doorway. An object of the present invention is to provide a railway vehicle structure that can be secured.

According to a first aspect of the present invention, there is provided a structure of a railway vehicle in which a plurality of extruded shape members are arranged so that an extrusion direction is a longitudinal direction of the vehicle body, and the side structure is configured. A side plate that forms a side surface and a web plate that extends inwardly of the vehicle body; the extruded shape member is cut away to form a side doorway in the side structure, and an upper surface portion of the side doorway The door end pillar is provided so as to cover the cut surface of the extruded shape member that is configured by using the end face of the shape member or the side surface of the web plate portion, and forms the front and rear surface portions of the side doorway, A curved corner portion of the side entrance is formed at a portion corresponding to the first corner extending from the lower end portion to the upper end portion of the side entrance and the upper corner portion of the side entrance, and an inner peripheral surface is formed on an upper surface portion of the side entrance. With a second part that becomes a continuous surface And wherein the Rukoto.
In this way, a reinforcing member for corner reinforcement is not necessary, the number of parts can be reduced, and the weight can be reduced. In addition, since the amount of welding can be reduced, the working time and manufacturing cost can be reduced. Since the corner reinforcement can be eliminated, the welding exposed to the outer plate surface is greatly reduced, and the appearance is improved.

  According to a second aspect of the present invention, it is desirable that a surface that is an inner peripheral surface of the second portion and continues to an upper surface portion of the side doorway extends in a horizontal direction.

  If it does in this way, since it joins in the part extended in the horizontal direction, a joined part can be separated from the corner part in which high stress occurs.

  According to a third aspect of the present invention, the door-end pillar has a channel shape having a main body portion that is flat in cross section and two side edge portions that extend in the same direction from both side edges of the main body portion, and has an outer surface side. It is desirable that the side edge to be formed is shorter than the side edge that forms the inner side surface.

  In this way, the front and rear surface portions that become the peripheral edge of the side doorway can be formed by the flat main body portion, and the peripheral edge (cut surface) of the side doorway formed in the side structure by the side edge portion that forms the inner surface side. ) Can be easily hidden.

  According to a fourth aspect of the present invention, a cutout recess is formed in the side structure from the front / rear surface portion of the side doorway to a corner portion corresponding to the shape of the door column, and the door is formed in the cutout recess. It is desirable that the front pillar is fitted.

  If it does in this way, those position alignment can be performed only by inserting a door-end pillar in a notch crevice. Moreover, the contact of the door-end pillar, the corner reinforcement part, and the opening upper end horizontal part is in the shape member arranged in the longitudinal direction, and the strength is improved.

  The curved corner portion is formed by a side plate provided on the side beam at the lower corner portion of the side entrance, and the door column is engaged with the side plate at a lower end portion. It can be set as the structure by which the notch part to be formed is formed.

  If it does in this way, the lower end part of a door-end pillar can also be extended to the lower end part of a side entrance, without spoiling appearance.

  According to a sixth aspect of the present invention, the extruded shape member has two face plate portions and a web plate portion connecting the two face plate portions, and one of the two face plate portions causes an outer surface of the side structure to be formed. It is desirable to be formed.

  In this way, the extruded shape member is composed of the two face plate portions and the web plate portion connecting them, so that the rigidity is increased.

  Since the present invention is configured as described above, a reinforcing member for corner reinforcement is not necessary, and the number of parts can be reduced. In addition, since the welding amount can be reduced, the manufacturing cost can be reduced. Since the corner reinforcement can be abolished, the welding exposed to the outer plate surface is greatly reduced, and the appearance is improved.

It is a side view showing one embodiment of a structure of a railway vehicle according to the present invention. The state which looked at the A section of FIG. 1 from the vehicle inner side is shown, (a) is a front view, (b) is a side view. The state before attaching a door-end pillar to the upper and lower corner portions of the side doorway is shown, (a) is a perspective view of the upper corner portion as viewed from obliquely below the vehicle interior, and (b) is the oblique view of the upper corner portion from obliquely upward from the vehicle exterior (C) is a perspective view of the lower corner portion as viewed obliquely from above the vehicle interior side, (d) is a perspective view of the lower corner portion as viewed from obliquely above the vehicle exterior side, and (e) is a perspective view of FIG. FIG. The door-end pillar is shown, (a) is a view seen from the inside of the vehicle, (b) is a view seen from the direction B of FIG. 4 (a), and (c) is a view seen from the outside of the vehicle. It is sectional drawing of a door-end pillar. It is sectional drawing in CC line of Fig.4 (a). (A) is the FF sectional view taken on the line of FIG. 2, (b) is the GG sectional view of FIG. 2, (c) is the MM sectional view of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2 (a) and 2 (b), the side structure 1 is configured by arranging a plurality of extruded shape members 2 so that the extrusion direction is the longitudinal direction of the vehicle body. In addition, the joining line of a some extrusion shape material is shown by L1-L5. A side entrance 1 </ b> A is formed in the side structure 1.

  The extruded shape member 2 has two face plate portions 2a and 2b and a web plate portion 2c connecting them, and one of the two face plate portions 2a and 2b forms an outer surface of the side structure 1. The The side doorway 1A is formed by joining the extruded shape member 2 to form the side structure 1 and then cutting off a part of the extruded shape member 2.

  The upper surface portion of the side entrance 1A is configured by utilizing the side surface of the web plate portion 2c of the extruded shape member 2 (or the end surface of the shape member 2 itself). That is, as shown in FIGS. 2A and 2B, the side surface of the web plate portion 2c of the extruded shape member 2 is arranged so as to coincide with the position of the upper surface portion of the side entrance 1A. The side surface is the upper surface portion of the side entrance 1A extending in the horizontal direction as it is.

  The side structure 1 is formed with a notch recess 1B extending to the vicinity of the upper corner portion except for the lower corner portion at the front and rear surface portions of the side entrance 1A, and the door column 11 is fitted into the notch recess 1B. It is out. That is, the notch recess 1 </ b> B is notched in a shape corresponding to the shape of the door-end pillar 11.

  As shown in FIGS. 3A and 3B, the notch recess 1B becomes an upper recess 1Ba having a size corresponding to the width of the door column 11 at a portion beyond the upper corner portion of the side entrance 1A. The width is maintained and extends to the lower corner portion. Further, at the lower corner portion of the side entrance 1A, as shown in FIG. 2B and FIGS. 3C to 3E, the face plate portion 2a of the extruded shape member 2 disposed on the upper side of the side beam 14 is provided. A curved corner plate portion 2d is formed.

  As shown in FIGS. 4 (a), (b), (c), and FIGS. 5 and 6, the door-end pillar 11 is arranged from the vicinity of the lower end portion of the side entrance 1A to the upper end portion to form the front and rear surface portions of the side entrance 1A. A linear first portion 11A and a second portion 11B which is disposed at a portion corresponding to the upper corner portion of the side entrance 1A and forms a curved corner portion of the side entrance 1A are formed integrally. It is a thing. Further, as shown in FIG. 5, in the cross section, the door-end pillar 11 has a flat main body portion 11a having a substantially rectangular cross section and the same direction from both side edges of the main body portion 11a (the outward direction of the side doorway 1A). In the channel shape having two side edge portions 11b and 11c extending in parallel to the direction perpendicular to the main body portion 11a), the side edge portion 11c that forms the outer surface side is the inner edge portion 11c. It is shorter than the side edge part 11b which forms the side surface side. The lengths of the side edges 11b and 11c are changed. If the lengths are the same, the side edges 11b and 11c are welded at the same position, and the distortion due to the heat is generated at the same position. This is because the production accuracy may be affected.

  The side edge portion 11c that forms the outer surface side has an extension portion 11cb that forms a stepped portion with the inclined portion 11ca sandwiched at the tip side, and as shown in FIG. The part 2a is fitted. The inclined portion 11ca functions to form a groove for welding, and the extension portion 11cb functions as a backing metal for the face plate portion 2a to ensure the welding quality between the side edge portion 11c and the face plate portion 2a. It can be done. Since the extruded shape member (side edge portion 11c) is formed in this way, work such as groove processing becomes unnecessary, which is advantageous in reducing work time.

  Further, in the upper end portion of the door-end pillar 11, that is, in the vicinity of the tip portion of the second portion 11B, the side edge portion 11b is cut as shown in FIG. On the other hand, a cutout portion 11e that engages with the curved corner plate portion 2d is formed at the lower end portion of the door post 11 (see FIGS. 3E and 4B). That is, the side edge portion is cut off at the lower end portion of the second portion 11B, and the face plate portion 2a (curved corner plate portion 2d) is positioned at that portion.

  When the door column 11 is fitted in the notch recess 1B of the side entrance 1A, the cut surface formed in each extruded shape member 2 to form the side entrance 1A in the side structure 1 is notch recess. Since the door-end pillar 11 is fitted in 1B, the door-end pillar 11 is blocked by the door-end pillar 11 and is not visible in appearance. A part of the front / rear surface portion and the upper surface portion of the side doorway 1A (a portion excluding the central portion formed by the side surface of the web plate portion 2c) is formed by the door-end pillar 11.

  Moreover, as shown to Fig.7 (a), the main-body part 11a (2nd part 11B) of the door-end pillar 11 continues to the upper surface part of the side entrance 1A which the end surface of the extrusion shape member forms. The surface (inner peripheral curved surface) is arranged as shown in FIG. 2B, and forms a part of the upper surface portion of the side entrance 1A.

  The surface (inner peripheral curved surface) of the main body portion 11a (second portion 11B) extends in the horizontal direction in the vicinity of being connected to the upper surface portion of the side doorway 1A formed by the end surface of the extruded shape member. Thereby, the connection part of the side structure 1 (extruded shape member 2) and the door-end pillar 11 is connected by the linear part. Further, in this portion, since the side edge portion 11b is cut, the cut surface of the extruded shape member 2 is exposed, so that the closing plate 12 is provided.

  In the above-described embodiment, the extruded shape member has a double skin structure having two face plate portions and a web plate portion for connecting the two face plate portions, but a single skin structure shape can also be used. In this case, in the double skin structure, the structure is the same as that in which the face plate portion on the inner side of the vehicle body is omitted, and the face plate portion forming the outer surface of the side structure and the direction orthogonal to the face plate portion in the vehicle. A web plate portion extending toward the body side.

DESCRIPTION OF SYMBOLS 1 Side structure 1A Side entrance 1B Notch recessed part 2 Extrusion shape 2a, 2b Face plate part 2c Web board part 11 Door-end pillar 11a Main body part 11b, 11c Side edge part 11d Step part 11A 1st part 11B 2nd part

Claims (6)

In the structure of a railway vehicle, the side structure is configured by arranging a plurality of extruded shape members so that the extrusion direction is the longitudinal direction of the vehicle body.
The extruded shape member has a face plate portion that forms an outer surface of the side structure, and a web plate portion that extends inward of the vehicle body,
A side doorway is formed in the side structure by cutting out the extruded shape member,
An upper surface portion of the side doorway is configured using an end surface of the extruded shape member or a side surface of the web plate portion,
A door post is provided so as to block the cut surface of the extruded shape forming the front and rear surface portions of the side doorway,
The door-end pillar forms a curved corner portion of the side doorway at a portion corresponding to a first portion extending from a lower end portion to an upper end portion of the side doorway and an upper corner portion of the side doorway, and an inner peripheral surface thereof A structure of a railway vehicle, comprising: a second portion that is a surface continuous with an upper surface portion of the side doorway.   The structure of a railway vehicle according to claim 1, wherein a surface that is an inner peripheral surface of the second portion and is continuous with an upper surface portion of the side doorway extends in a horizontal direction.   The door-end pillar has a channel shape having a main body portion that is flat in cross section and two side edge portions that extend in the same direction from both side edges of the main body portion, and the side edge portion that forms the outer surface side is the inner surface surface. The structure of a railway vehicle according to claim 1 or 2, wherein the structure is shorter than a side edge portion forming the side.   In the side structure, a notch recess is formed from the front / rear surface portion of the side doorway to the corner corresponding to the shape of the door column, and the door column is fitted in the notch recess. The structure of a railway vehicle according to any one of claims 1 to 3. In the lower corner portion of the side doorway, a curved corner portion is formed by a side plate provided on the side beam,
The structure of a railway vehicle according to any one of claims 1 to 4, wherein the door pillar has a notch that engages with the side plate at a lower end.   The extruded shape member has two face plate portions and a web plate portion connecting them, and one of the two face plate portions forms an outer surface of the side structure. The structure of a railway vehicle according to any one of claims 1 to 5.

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