JP6386355B2 - Side structure for railway vehicles - Google Patents

Description

  The present invention relates to a railcar side structure, and more particularly, to a railcar side structure including a side pillar having a variable cross-sectional shape.

  In general, the vehicle body of a railway vehicle is composed of a hexahedron of a side structure, a wife structure, a roof structure, and a frame. Among these, the side structure is required to have sufficient buckling strength and rigidity because a compression / tensile load is applied from the vehicle vertical direction and the longitudinal direction. For example, in a stainless steel structure, vertical and horizontal bone members are disposed on a side outer plate obtained by joining a blowing portion between a curtain plate portion and a window opening and a waist plate portion.

As such a side structure, as described in Patent Document 1, for example, a structure in which a lateral bone and a vertical bone are arranged as reinforcing materials on a vehicle inner surface of a side outer plate is known. More specifically, the rigidity required for the side structure is ensured by welding a horizontal bone having a cross-sectional hat shape to the outer plate and joining a vertical bone having a cross-sectional hat shape to the upper portion of the horizontal bone.
JP 2005-329412 A

  In particular, in the peripheral portion of the window opening where the rigidity is low, the side outer plate is prevented from being deformed by providing a side column extending in the vehicle vertical direction at a location adjacent to the window opening (see FIG. 16 of Patent Document 1). ).

  When using a bone member with a cross-sectional hat shape having a pair of flange portions, a web portion extending perpendicularly to the flange portions, and a head portion as the side pillars, the flange portions and the side outer plates are joined and fixed by spot welding. Is done.

  Here, when the side column and the side outer plate are joined, a space (closed space) surrounded by the web portion of the side column, the head, and the side outer plate is formed. It becomes wider by the amount of the closed space. Therefore, if a compressive load in the vehicle longitudinal direction acts on the side outer plate, the outer plate may be buckled. In particular, when the side outer plate is thin (for example, 2.0 mm or less), the problem of buckling becomes significant.

  On the other hand, when a bone member having a Z-shaped cross section is used as a side column, there is a problem that twisting is likely to occur during bending, although it is lighter than a side column having a cross-sectional hat shape. FIG. 6A shows a cross section of a Z-shaped bone member, which is composed of a pair of flange portions F and a web portion connecting the flange portions, PA is a main shaft, and NA is a neutral shaft. . When such a bone member is applied to the side column, one flange portion is joined to the side outer plate, and the other flange portion is separated from the side outer plate.

  When a bending moment about an axis that is parallel to the flange surface and orthogonal to the longitudinal direction of the bone member is applied to the asymmetrical bone member, the main shaft PA is inclined with respect to the flange surface F. Therefore, twisting is likely to occur.

  In particular, in the structure having the outer shell shape of the hem diaphragm in which a part of the waist plate is curved inwardly of the vehicle, the side column needs to be bent. Therefore, when a bone member having a Z-shaped cross section is applied to the side column, if the bending process is performed on the side column, the flatness of the side outer plate may be deteriorated due to twisting. In particular, since the side skin plate is a part that can be seen by the user, it is a problem that the aesthetic appearance is lowered.

  On the other hand, the side column with a hat-shaped cross section hardly affects the flatness of the side outer plate even if it is bent. This is because, as shown in FIG. 6B, the main axis PA is orthogonal to or parallel to the flange surface F, so that no torsion occurs even when a bending moment is applied. However, when a side column having a hat-shaped cross section is used, as described above, a problem of buckling may occur in the side outer plate.

  In this way, in the shape of the side pillars, the occurrence of torsion during bending and the buckling of the side outer plate are in a trade-off relationship. It was difficult to suppress the buckling of the side skin.

  Therefore, an object of the present invention is to provide a railway vehicle side structure that is reduced in weight while preventing a decrease in aesthetics of a side outer plate due to buckling or twisting.

  The above object is achieved by the following railcar side structure.

A side outer plate having a curtain plate, a blowing provided between at least two window openings, and a waist plate including a curved portion partially curved inward in the vehicle width direction;
A pair of side pillars extending continuously in the vehicle vertical direction across the curtain, blowing and waistboard, and disposed between the two window openings;
A transverse bone extending in the longitudinal direction of the vehicle,
Each side pillar is
In the blowing portion and the curved portion of the waist plate, the head portion, the web portion, and the first and second flange portions joined to the side outer plate,
In the waist plate excluding the curtain plate and the curved portion, the head portion, the web portion, and the first flange portion joined to the side outer plate,
The first flange portions of the pair of side pillars are arranged so as to face each other,
Among the horizontal bones, the horizontal bones arranged between the pair of side columns are joined to the first flange portions of the side columns at both ends in the vehicle longitudinal direction,
Among the horizontal bones, the horizontal bones arranged on the curtain plate at the upper part of the window opening and the lower part of the window opening, excluding the curved part, have one end in the vehicle longitudinal direction at the side outer plate and the head of the side pillar. It is inserted into the space formed by the part and the web part.

  Thus, the side pillar is a member that continuously extends in the vehicle vertical direction, has a variable cross-sectional shape, and has a hat shape having a head portion, a web portion, and two flange portions at the curved portion of the blowing and waist plate. The waist plate excluding the curtain plate and the curved portion has a single head portion, a web portion, and a flange portion joined to the side outer plate. As a result, the rigidity required for the side skin is ensured, and at the position corresponding to the curved portion of the side skin that needs to be bent, the shape is such that it is difficult to be twisted. Since the cross-sectional shape has one flange portion joined to the plate, the weight can be reduced. Further, in the waist plate excluding the curtain plate and the curved portion, the longitudinal end portion of the transverse bone is inserted into the space formed by the first flange portion, the head portion, and the web portion, so that the buckling of the outer plate is prevented. Can be prevented.

Preferably, the side post is
The main axis and the neutral axis coincide with each other at the curved portion of the blowing and waist plate,
The main axis and the neutral axis do not coincide in the lumbar plate excluding the curtain and the curved portion.

  With this configuration, the portion that needs to be bent is configured not to be twisted, so that the flatness of the side outer plate can be ensured while reducing the weight.

Preferably, the corner of the window opening further includes a corner reinforcing member having a flat portion extending parallel to the side outer plate and a rising portion orthogonal to the flat portion,
The plane portion of the corner reinforcing member, the first flange portion of the side pillar, and the side outer plate are joined,
The rising portion of the corner reinforcing member and the web portion of the side column are joined.

  Specifically, among the side pillars, in blowing, the first reinforcing plate is attached to the head of the side pillar in which the first flange portion is joined to the side outer plate and the second flange portion is joined to the corner reinforcing member. Also have.

  With this configuration, since the corner reinforcing member is joined to the side column and the outer plate at the corner of the window opening where stress is concentrated, the rigidity of the side structure around the window opening can be increased. Moreover, since the 1st reinforcement plate for reinforcement is provided in the head of a side column, the rigidity of a side column and a side outer plate can be ensured.

  Preferably, a second reinforcing plate joined to the side outer plate is further provided in the internal space of the side column adjacent to the corner of the window opening.

  With this configuration, since the reinforcing plate is provided in the internal space of the side column so as to connect the flange portion of the side column at the corner of the window opening where stress is concentrated, buckling of the side outer plate can be prevented. .

  As described above, the present invention can provide a side structure for a railway vehicle that is reduced in weight while preventing a decrease in aesthetic appearance of the side outer plate due to buckling or twisting.

Side view of a railcar side structure according to an embodiment The figure which shows a part of side structure seen from the vehicle inside among the railway vehicle side structures which concern on embodiment II sectional view of the railcar side structure in FIG. (A) is a partially enlarged view of the vicinity of the pair of side pillars 60 in FIG. 2, and (b) to (e) are cross-sectional views at each part. Enlarged view of the corner of the window opening in the embodiment (A) is sectional drawing of a Z-shaped bone member, (b) is sectional drawing of a hat-shaped bone member

(Embodiment)
The vehicle body of a railway vehicle is composed of a hexahedron of a side structure, a wife structure, a roof structure, and an underframe. FIG. 1 is a side view of a railcar side structure 1 according to the present embodiment, and FIG. 2 shows a part of the side structure as viewed from the vehicle interior side. As shown in FIGS. 1 and 2, the side structure 1 includes a side skin 2 made of stainless steel, a door opening 3, a plurality of window openings 4 provided between the door openings, and a plurality of horizontal bones as reinforcing members. 5 and the longitudinal bone 6. The number of door openings, window openings, and reinforcing members is not limited to that shown in the figure.

  As shown in FIG. 2, the side outer plate 2 includes a curtain plate 20 disposed above the window opening 4, a waist plate 21 disposed below the window opening 4, and the window opening 4. 20 and the blowing 22 sandwiched between the waist plates 21 are joined to each other by welding or the like. Here, the waist plate 21 has a skirt diaphragm shape having a curved portion 210 that is partially curved inwardly of the vehicle to ensure a sufficient cabin space (see FIG. 3).

  The vertical bone 6 is a reinforcing member that extends in the vehicle vertical direction, and is disposed at a position adjacent to the window opening 4 and extends in the vehicle vertical direction across the curtain plate 20, the blowing 22, and the waist plate 21, and the curtain plate. 20 includes a curtain pillar 61 and a waist pillar 62 provided on the waist plate 21.

The lateral bone 5 is a reinforcing member extending in the longitudinal direction of the vehicle, and is provided between the upper and lower portions of the window opening 4 and the pair of side columns 60. The lateral bone 5 includes a first lateral bone 50 and a second lateral bone 51 having different cross-sectional shapes. 3 is a cross-sectional view taken along the line II of FIG. As shown in FIG. 3, the 1st horizontal bone 50 is arrange | positioned at the bending part 210, and the 2nd horizontal bone 51 is arrange | positioned in the other location.

  As shown in FIG. 2, the first transverse bone 50 is provided on the bending portion 210 of the waist plate 21. Among these, the 1st horizontal bone 50 arrange | positioned at the lower part of the window opening 4 has one end part of the vehicle longitudinal direction joined to the side column 60, the other end part joined to the waist pillar 62, and locations other than an end part. Are joined to the side skin 2 by spot welding.

  On the other hand, as for the 1st horizontal bone 50 arrange | positioned between a pair of side pillars 60 (lower part of the blowing 22), the both ends of the vehicle longitudinal direction are each joined to the side pillar 60, and locations other than an edge part Are joined to the side outer plates 2 by spot welding.

  The second transverse bone 51 is disposed at a place excluding the bending portion 210. As shown in FIG. 2, the second lateral bone 51 has a lateral bone priority structure that is not divided by the lumbar column 62, and the vehicle longitudinal direction end portions thereof are joined to the side columns 60, respectively. Each of the side outer plates 2 is joined by spot welding.

  The cross-sectional shape of the first transverse bone 50 is an asymmetrical shape as shown in FIG. 3, and includes one flange portion 50a joined to the side outer plate 2, a head portion 50b, and a pair of web portions 50c. Yes. In the present embodiment, the first transverse bone 50 is a pair of web portions, but one web portion 50c may be omitted and the cross section may be Z-shaped.

  The cross-sectional shape of the second horizontal bone 51 is a hat shape, and includes a pair of flange portions 51a joined to the side outer plate 2, a head portion 51b, and a pair of web portions 51c.

  4 (a) is a partially enlarged view of the vicinity of the pair of side pillars 60 in FIG. 2, FIGS. 4 (b) to 4 (e) are cross-sectional views at each part, and FIG. 4 (b) is II-II. Section, (c) is III-III section, (d) is IV-IV section, (e) is VV section. As shown in FIG. 4, the side column 60 has a variable cross-sectional shape that differs depending on the vehicle vertical direction. Here, the side column 60 is manufactured by bending a portion corresponding to the bending portion 210 by a press machine or the like, and is manufactured as an integrated object.

  In more detail, in the position corresponding to the blowing part 22 and the curved part 210 of the waist board 21 among the side pillars 60 (FIG. 4 (c), (d)), the cross-sectional shape is a hat shape, It comprises a pair of first flange portion 60a, second flange portion 60b, web portion 60c, and head portion 60d to be joined.

  On the other hand, in the side pillar 60 at positions corresponding to the waist plate 21 excluding the curtain plate 20 and the curved portion 210 (FIGS. 4B and 4E), the first flange portion 60a, the web portion 60c, The cross-sectional asymmetric shape is formed by a portion 60d and a tab portion 60e located at a position separated from the side outer plate 2.

  A pair of such side pillars 60 are provided between the window openings 4 including the blowing 22, and these are arranged so as to have a horizontally reversed shape. In other words, the pair of side columns 60 are arranged such that the first flange portions 60a face each other.

  The cross-sectional asymmetric shape of the side post 60 may be other than the shape including the first flange portion 60a, the web portion 60c, the head portion 60d, and the tab portion 60e. For example, a cross-sectional shape obtained by removing the tab portion 60e from the shapes shown in FIGS. 4B and 4E may be used, or a cross-sectional shape obtained by removing the tab portion 60e and one web portion 60c. In the present embodiment, for the sake of explanation, the cross-sectional asymmetric shape may be simply referred to as a substantially Z-shaped cross section, and the cross-symmetric shape may be referred to as a cross-sectional hat shape.

  With such a configuration, the side column 60 has a cross section in which the main axis and the neutral axis coincide with each other at a position corresponding to the bending portion 210 to be bent, and the main axis is orthogonal or parallel to the flange surface. By adopting a shape, even if a bending moment is applied, twisting is unlikely to occur. At the same time, the side column 60 has one flange portion joined to the side outer plate 2 at a position corresponding to the curtain plate 20 that is not subjected to the bending process and the waist plate 21 excluding the curved portion 210, and is cut off from the cross-sectional hat shape. The area can be reduced and the weight can be reduced. For example, by using the side pillar 60 having a variable cross-sectional shape, the weight can be reduced by about 10% per one side pillar 60.

  In addition, when the side pillar 60 is made into a cross-sectional hat shape in the curved part 210, since the joining space | interval with the side outer plate 2 spreads, the problem of outer plate buckling can be assumed. However, the side outer plate 2 in the curved portion 210 is a curved plate and can secure the buckling strength of the plate itself as compared with the flat plate. Therefore, the side outer plate 2 is seated by making the cross section of the side column 60 into a hat shape. The problem of bending does not occur.

  Next, a connection structure between the lateral bone 5 disposed between the pair of side columns 60 and the side columns 60 will be described.

  As shown in FIG. 3 and FIGS. 4B to 4E, the lateral bone 5 (the first lateral bone 50 and the second lateral bone 51) is provided between the pair of side columns 60. The longitudinal end portions of the first transverse bone 50 or the second transverse bone 51 in the vehicle longitudinal direction are formed by spot welding of the flange portions 50a, 51a, the first flange portions 60a of the side columns 60, and the side outer plates 2. Be joined.

  In addition, the longitudinal direction both ends of the 1st horizontal bone 50 and the 2nd horizontal bone 51 between a pair of side pillars 60 are subjected to segiri processing, and run on each first flange part 60a of each side pillar 60. The other portions of the first lateral bone 50 and the second lateral bone 51 are in contact with the side outer plate 2 and are joined by spot welding at a predetermined interval.

In this way, the lateral bone 5 between the pair of side columns 60 is joined by overlapping both end portions thereof on the flange portions of the side columns. On the other hand, since the connection structure of the horizontal bone 5 and the side pillar 60 which are arrange | positioned at the upper part and the lower part of the window opening 4 differs from said connection structure, it demonstrates below.
[Connection structure between second transverse bone 51 and side column 60]
In the curtain plate 20 and the waist plate 21 (excluding the curved portion 210) in which the cross-sectional shape of the side column 60 is substantially Z-shaped, the longitudinal ends of the second transverse bone 51 are formed by the side column 60 and the side outer plate 2. It is inserted into the formed internal space S (see FIGS. 4B and 4E). That is, the vehicle longitudinal direction end part of the second transverse bone 51 arranged at the upper part or the lower part of the window opening 4 is formed by the side pillar 60 (web 60c, head part 60d, tab part 60e) and the side outer plate 2. It is inserted into the internal space S1. In a state where the second horizontal bone 51 is inserted into the internal space S1, the lower surface of the tab portion 60e of the side pillar 60 and the upper surface of the head portion 51b of the second horizontal bone 51 are in contact with each other, and these are joined by spot welding. . With such a structure, the joint interval between the second transverse bone 51 and the side outer plate 2 can be narrowed, and in this embodiment, the buckling strength can be improved by about four times. Can be suppressed.

On the other hand, when a bone member having a hat-shaped cross section is used as a side column, it is necessary to insert a reinforcing plate into the hat-shaped internal space to prevent buckling of the side outer plate. Furthermore, in order to join the said plate to a side outer plate, it was necessary to form the penetration hole for spot welding electrodes in a side column. For this reason, when a side column with a uniform hat shape is used, weight reduction cannot be achieved, and the operation is complicated. However, in the present embodiment, the longitudinal end portion of the second transverse bone 51 may be inserted into an open space (internal space S1 formed by the side pillar 60 and the side outer plate 2) having a substantially Z-shaped cross section. Therefore, it is not necessary to separately provide a reinforcing plate, and the operation for forming the spot welding electrode insertion hole therefor is not necessary.
[Connection structure between first lateral bone 50 and side column 60]
In the curved portion 210 in which the cross section of the side column 60 has a hat shape, the flange portion 50a at the end portion in the longitudinal direction of the first transverse bone 50 is subjected to a sizing process and overlapped with the second flange portion 60b of the side column 60. (See FIG. 4D).

  Furthermore, the corner reinforcement member 70 is arrange | positioned at the 2nd flange part 60b side of the side pillar 60 in the blowing 22 in which the cross section of the side pillar 60 becomes a hat shape. That is, the corner reinforcing member 70 includes flat portions 70a provided at the four corners of the window opening 4 where stress is concentrated and extending in parallel to the side outer plate 2, and rising portions 70b orthogonal to the flat portion 70a. (See FIG. 5). The corner portion reinforcing member 70 has a flat surface portion 70 a joined to the second flange portion 60 b and the side outer plate 2 of the side column 60, and a rising portion 70 b that is a web portion 60 c of the side column 60 and the first lateral bone 51. The four corners of the window opening 4 are reinforced by being joined to the web portions 51c.

  In addition, in the present embodiment, the side column 60 may have a problem of the buckling of the outer plate due to the space between the joints being widened by the closed space formed when the side column 60 having the hat-shaped cross section and the blowing 22 are joined. Among these, this is avoided by providing a second reinforcing plate 80 joined to the side outer plate 2 in the internal space S2 at a position adjacent to the corner of the window opening 4 (FIG. 4C). reference). That is, since the second reinforcing plate 80 connects the first flange portion 60a and the second flange portion 60b of the side column 60, the side outer plate 2 is prevented from buckling. Note that an insertion hole 60f through which a spot welding electrode can be inserted is formed in the head portion 60d of the side column 60, and the second reinforcing plate 80 and the side outer plate 2 can be joined by spot welding.

  Further, as shown in FIG. 4A, a reinforcing first reinforcing plate 90 is provided on the head 60d of the side column 60 at a position adjacent to the corner of the window opening 4 in the side column 60, The rigidity of the side pillar 60 and the side outer plate 2 is ensured.

  Next, returning to FIG. 2 again, the curtain pillar 61 and the waist pillar 62 constituting the longitudinal bone 6 will be described.

  A plurality of curtain pillars 61 are arranged between the side pillars 60 and above the window opening 4 to ensure the rigidity of the curtain board 20 (see FIG. 2). In addition, the curtain pole 61 is arrange | positioned in the position which becomes on the extended line of the rafter arrange | positioned in the vehicle width direction in the roof structure which is not shown in figure. With this configuration, sufficient rigidity can be ensured with respect to a load acting in the vehicle vertical direction.

  The curtain pillar 61 has a cross-sectional hat shape having a pair of flange portions joined to the curtain plate 20, a head portion, and a web portion. However, the flange portion and the web portion are intersected with the second transverse bone 51. The second transverse bone 51 has a transverse bone priority structure that is not divided by the curtain pillar 61.

  Further, an insertion hole through which a spot welding electrode can be inserted is formed at the head of the curtain column 61 at a location where the flange portion 51 a of the second transverse bone 51 intersects the curtain column 61. The flange portion 51a is joined to the curtain plate 20 by spot welding. Note that a connecting plate 120 is provided at the lower end portion of the curtain pole 61 to connect the head of the curtain pole 61 and the head 51a of the second transverse bone 51, and the curtain pillar 61 and the second transverse bone 51 are connected. In this way, the curtain pole 61 and the second horizontal bone 51 can be firmly joined by the connecting plate 120.

  The waist column 62 is disposed at the lower part of the center of the window opening 4 in the longitudinal direction of the vehicle (see FIG. 2). The lumbar column 62 has a cross-sectional hat shape having a pair of flange portions joined to the lumbar plate 21, a head portion, and a web portion in the curved portion 210 of the lumbar plate 21. The flange portion and the web portion have a shape that is notched at a location that intersects the second transverse bone 51. That is, the first horizontal bone 50 arranged in the bending portion 210 is divided by the waist column 62, but the second horizontal bone 51 arranged in a place other than the bending portion 210 is in a place intersecting with the waist column 62. The transverse bone is preferentially inserted into the notched portion and is not divided by the waist column 62.

  Similarly to the curtain pillar 61, an insertion hole through which a spot welding electrode can be inserted is formed at the head of the waist pillar 62 at a location where the flange 51 a of the second transverse bone 51 intersects the waist pillar 62. The flange portion 51a of the second transverse bone 51 is joined to the waist plate 21 by spot welding. Note that a connecting plate 120 that connects the head and the head 51 b of the second horizontal bone 51 is provided at the upper end of the waist pillar 62, and the waist pillar 62 and the second horizontal bone 51 are connected. Thus, the waist plate 62 and the second transverse bone 51 can be firmly joined by the connecting plate 120.

  The railway vehicle side structure according to the present invention is particularly suitable for a structure having an outer shell shape of a skirt diaphragm.

DESCRIPTION OF SYMBOLS 1 Side structure 2 Side skin | plate 3 Door opening 4 Window opening 5 Horizontal bone 6 Longitudinal bone 20 Curtain board 21 Waist board 22 Blowing 50 1st lateral bone 51 2nd lateral bone 50a, 51a Flange part 50b, 51b Head part 50c, 51c Web Part 60 Side pillar 60a First flange part 60b Second flange part 60c Web part 60d Head part 60e Tab part 61 Curtain pillar 62 Lumbar pillar 70 Corner reinforcement member 80 Second reinforcement plate 90 First reinforcement plate 120 Connecting plate 210 Curved part

Claims (5)

A side outer plate having a curtain plate, a blowing provided between at least two window openings, and a waist plate including a curved portion partially curved inward in the vehicle width direction;
A pair of side pillars extending continuously in the vehicle vertical direction across the curtain plate, the blowing and the waist plate, and disposed between the two window openings;
A transverse bone extending in the longitudinal direction of the vehicle,
Each said side pillar is
In the blowing portion and the curved portion of the waist plate, the head portion, the web portion, and first and second flange portions joined to the side outer plate,
In the waist plate excluding the curtain plate and the curved portion, the head portion, the web portion, and the first flange portion joined to the side outer plate,
The first flange portions of the pair of side columns are arranged so as to face each other,
Among the horizontal bones, the horizontal bones arranged between the pair of side columns are joined to the first flange portions of the side columns at both ends in the vehicle longitudinal direction, respectively.
Among the horizontal bones, the horizontal bones arranged on the waist plate excluding the curved portion at the upper part of the window opening and the lower part of the window opening have one end portion in the vehicle longitudinal direction at the lateral side. A railcar side structure inserted into a space formed by a plate, the head portion of the side pillar, and the web portion. The side pillar is
In the blowing and the curved portion of the waist plate, the main axis and the neutral axis coincide,
The side structure for a railway vehicle according to claim 1, wherein a main shaft and a neutral shaft do not coincide with each other on the waist plate excluding the curtain plate and the curved portion. The corner portion of the window opening further includes a corner reinforcing member having a flat portion extending in parallel to the side outer plate and a rising portion orthogonal to the flat portion,
The planar portion of the corner reinforcing member, the first flange portion of the side pillar, and the side outer plate are joined,
The railway vehicle side structure according to claim 1 or 2, wherein the rising portion of the corner reinforcing member and the web portion of the side column are joined.   Among the side pillars, in the blowing, the first flange portion is joined to the side outer plate, and the second flange portion is joined to the corner reinforcing member at the head portion of the side pillar. The railway vehicle side structure according to claim 3, further comprising a plate.   The side structure for a railway vehicle according to claim 1, further comprising a second reinforcing plate joined to the side outer plate in an internal space of the side column adjacent to a corner of the window opening.

Images