JP4854715B2 - Railcar side structure - Google Patents

Description

  The present invention relates to a structure of a side structure of a railway vehicle, particularly a structure around an opening, such as an entrance / exit and a window, of the side structure.

  Conventionally, a side structure of a railway vehicle formed by joining extruded shapes having a double skin structure in which outer and inner face plate portions are connected by a web portion positioned therebetween (for example, Patent Document 1). reference).

  As described above, the side structure of a railway vehicle has a structure including openings such as doorways and windows, and stress is concentrated at the corners of such openings.

Therefore, in order to alleviate such stress concentration, it is a common practice to make the corners of the openings curved. In order to obtain such a curved shape, conventionally, for example, as shown in FIG. 13A, the plate thickness is thicker than the base material 102 (usually an aluminum extruded shape is used) around the opening 101. The reinforcing material 103 is attached by welding. Here, 104 is an entrance post.
Japanese Patent No. 2002-178913 (paragraphs 0019, 0020 and FIG. 3)

  However, when such a reinforcing material is attached by welding, a portion where a large stress is generated, in particular, the curved end portion of the reinforcing material 103 and the portions P1 and P2 in contact with the base material 102 and the inlet column 104 are the welded portions. Therefore, even if the thickness of the reinforcing material is increased, the strength is not improved so much and the reinforcing efficiency is poor. In particular, the fatigue strength is significantly affected because the strength is greatly different between the base metal portion and the welded portion. Moreover, since it becomes a welding joint with a thick reinforcing plate and a thin base material, welding is difficult and welding defects are likely to occur.

  Therefore, as shown in FIG. 13B, the inventor fits the base material 102 ′ (extruded profile) into the lower portion of the entrance post 104 ′ so as to straddle the lower corner R of the opening 101. If the base material 102 ′ is formed with a curved portion that becomes the lower corner R of the opening 101, the lower corner R of the opening 101 is entirely the base material 102 ′, so that the reinforcing material The inventors have conceived that the fatigue strength can be improved without using it, and have reached the present invention.

  An object of the present invention is to provide a side structure of a railway vehicle in which fatigue strength is improved by using, as a base material, a corner of an opening serving as an entrance / exit or a window.

The invention of claim 1 is provided on the outer side of the railway vehicle and extends in the longitudinal direction of the vehicle, and the inner side plate is disposed in parallel with the outer side plate and provided on the inner side of the rail vehicle. An extruded shape member having a plurality of web portions connecting the outer side surface plate portion and the inner side surface plate portion, an opening portion formed in the extruded shape member and having arcuate corners , and left and right ends of the opening portion And an entrance post extending in the vehicle vertical direction, and the extruded shape member has an engaging portion at the upper end of the corner of the opening, and the outer side of the corner the thickness of the face plate portions rather thick than the thickness of the inner side plate portion, the inlet column is provided at its lower end, it has an engaged portion for engaging the engaging portion, characterized in that.

In this way, since the corner stress concentration arising are all extruded shape members (base material), as compared with the conventional structure for mounting the reinforcing plate by welding, it is possible to improve the fatigue strength at a thin thickness it can.

In addition, the thickness of the outer face plate portion serving as the corner is merely by using an extruded shape member in which the thickness of the outer face plate portion at the corner portion of the opening is thicker than the thickness of the inner face plate portion. However, it is formed thicker than the thickness of the inner side surface plate portion .

In particular, there is no weld defect at the corners of the apertures where stress concentration occurs, as in the conventional structure in which the reinforcing plate is attached by welding, so there is no weld defect and the occurrence of unforeseen circumstances due to this weld defect can be avoided .
Moreover, the structure where the thickness of the face plate part used as the corner part of an opening part is thick is easily implement | achieved by engaging the engaging part of an extruded shape member with the to-be-engaged part of an entrance pillar.

In this case, as described in claim 2, in the region excluding the corner portion, the outer side plate portion and the inner side plate portion have substantially the same thickness .

4. The outer plate according to claim 3 , wherein the inlet column is provided so as to be substantially flush with the outer side plate portion, and extends in a vehicle vertical direction except for the corner portion of the opening portion. And a side column portion that is provided on the inner side of the railway vehicle with respect to the outer plate portion and extends in the vehicle vertical direction, and the thickness of the outer side plate portion at the corner is the outer plate. It is desirable that the thickness is substantially the same as the thickness of the portion.

In this way, the outer plate portion of the inlet column is cut out to be the engaged portion, so that the engaged portion of the inlet column and the engaged portion of the extruded shape member can be easily engaged. It is formed.
The invention according to claim 4 is formed by joining an upper structure and a lower structure extending in the longitudinal direction of the vehicle, provided at predetermined intervals along the longitudinal direction of the vehicle, and a plurality of corners having an arc shape. Of the railway vehicle, and an entrance post provided in at least one of the left and right ends of the opening and extending in the vehicle vertical direction , wherein the upper vehicle body is the rail vehicle. A first outer side plate portion provided on the outer side of the rail, a first inner side plate portion provided on the inner side of the railway vehicle, and a plurality of first web portions that connect the first outer side plate portion and the first inner side plate portion. A first concave portion formed at a position corresponding to the opening, and the lower structure is a second outer face plate portion provided on the outside of the railway vehicle, and a first concave portion provided on the inner side of the railway vehicle. 2 inner side surface plate part, said 2nd outer side surface plate part, and said 2nd inner side surface plate Preparative a plurality of second web portion connecting a second recess formed at a position corresponding to the opening, and an engaging portion at an upper end corner portion of the opening, the in the corner the thickness of the second outer surface plate portion, the second rather thick than the thickness of the inner surface plate portion, the inlet column is characterized by its lower end, has an engaged portion for engaging the engaging portion, that And

In this case, as described in claim 5 , the upper-side structure further includes a first end portion that protrudes downward in the vehicle vertical direction to form a single skin structure, and the lower-side structure is positioned in the vehicle vertical direction. A single skin structure is formed by protruding upward, and further includes a second end joined to the first end, and in the portion corresponding to the single skin structure, the first inner side plate and the second inner side that further having a reinforcing member bridging the face plate section, and this is desirable.
According to a sixth aspect of the present invention, the vehicle further includes a door sill column provided in parallel to the entrance column, and the reinforcing member is between the entrance column and the door sill column, It can be configured to extend in the direction.

  In this way, the step of the extruded shape member in which the edge portions are joined between the entrance column serving as the door pocket and the door bottom column arranged in parallel to the entrance column on the opposite side of the entrance and exit. A flat plate is provided between the portions, and the rigidity of the portion having a single structure around the entrance is increased.

  Since the present invention is configured as described above, all the lower corners where stress concentration occurs are extruded shapes (base materials). Therefore, compared with a conventional structure in which a reinforcing plate is attached by welding, fatigue is reduced with a thinner plate thickness. Strength can be improved.

  As a secondary effect, the lower end of the side structure in contact with the underframe is a thick plate, so the strength is increased in the case where another vehicle rides on the underframe in the event of an offset collision. Is advantageous.

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

  FIG. 1 is a cross-sectional view of a side structure of a railway vehicle according to an embodiment of the present invention, FIG. 2 is a perspective view of a railway vehicle using the side structure, and FIGS. It is sectional drawing of the part which becomes a downward window opening, a fixed window opening, and an entrance / exit, respectively.

  As shown in FIG. 1, a rail vehicle structure 1 includes left and right side structures 2L and 2R, a roof structure 3 connecting the upper ends of the left and right side structures 2L and 2R, and the left and right side structures 2L and 2R. And a frame 4 that connects the lower ends of 2R.

  For example, as shown in FIG. 2, the right side structure 2 </ b> R includes four extruded shape members 11 that are arranged in the vertical direction and joined to each other at the center in the vertical direction. Two extruded shapes 12, 13 having a shorter vertical length than the four extruded shapes 11 are joined to the upper and lower sides of the four extruded shapes 11, respectively. As shown in FIGS. 2 and 3 (a) to 3 (c), the side structure 2R has a part of the extruded shape member formed in the lower window opening, the fixed window opening, and the entrance / exit of the side structure 2R. The part is cut out to form openings S1, S2, and S3.

  As shown in FIG. 4, the extruded shape member 11 includes a central portion 11A having a double skin structure and end portions 11B having a single skin structure provided continuously on both sides thereof. The center portion 11A of the double skin structure includes an outer face plate portion 11a that is the outer side of the vehicle body (surface exposed portion), an inner face plate portion 11b that extends in parallel to the outer face plate portion 11a and is the inner side of the vehicle body, A plurality of vertical web portions 11c extending in a direction orthogonal to the inner face plate portions 11a and 11b and connecting them.

And the edge part 11B of the single skin structure as an extension part of the outer faceplate part 11a is provided in succession on both sides of the central part 11A. The edges of the end portion 11B are joined together by, for example, friction stir welding as shown in FIG. Further, the extruded shape members 12 and 13 are joined in the same manner. These extruded shape members 11 to 13 are joined to form a panel that becomes the side structure 2R (or 2L ) of the railway vehicle. W is a window glass.

  In other words, when one entire extruded shape member 11 is viewed, the outer face plate portion 11a is wider than the inner face plate portion 11b, and its end edge portion is the outer face plate portion 11a of another extruded shape member. A panel that becomes the side structures 2L and 2R is formed by joining the end edge portions and joining them.

  Further, on the outer surface side of the inner face plate portion 11b, it extends in the shape longitudinal direction at the center in the width direction (direction perpendicular to the shape longitudinal direction) of the corresponding portion between the adjacent vertical web portions 11c. A linear minute convex portion 11e (having a height of about 0.3 mm) that functions as a mark line is formed. The minute convex portion 11e serves as a mark when forming a long hole 11f for forming a hanging groove portion in the inner face plate portion 11b by post-processing in the longitudinal direction of the shape member. As will be described later, the head T1 of the support bolt T for attaching the interior material is inserted into the long hole 11f. Note that, instead of the minute convex portion 11e that functions as a mark line, a minute concave portion may be used.

  In this way, for example, the extruded shape member 11 is attached by FSW bonding before or after the side structure 2L is formed or after bonding, and the minute projection 11e is used as a mark for attaching the interior material. By forming the long hole 11f for inserting the support bolt, that is, the long hole 11f capable of locking the head T1 of the support bolt T for attaching the interior material in the longitudinal direction of the shape member, a suspension groove portion that does not protrude inward is formed. can do.

  In particular, since the position of the suspension groove rail required for each vehicle system type is different, conventionally, the side structure is configured using different shapes, but in this embodiment, the suspension groove portion is formed by post-processing. Therefore, the above-described four extruded shape members 11 can be shared, which is advantageous in reducing costs.

  Each vertical web part 11c is formed in the intermediate part of the profile thickness direction so that the regulation convex part 11d extended in parallel with faceplate part 11a, 11b mutually opposes. The restricting projection 11d restricts the free movement of the support bolt T into which the head T1 is inserted through the long hole 11f in the bolt axis direction. That is, a function similar to that of a conventional hanging groove rail is exhibited in a portion in which the long hole 11f is formed by post-processing by the two adjacent vertical web portions 11c and the two restricting convex portions 11d provided thereon. It will be.

  Further, the end portion of the center portion 11A of the double skin structure is formed with a step portion 11g on the inner face plate portion 11b side, and the end edge of the face plate portion 11b ′ forming the step portion 11g is interposed through the inclined web portion 11h. And is connected to the outer face plate portion 11a.

  Such a stepped portion 11g is provided with a reinforcing plate 21 (see FIG. 5) that is a flat plate between the stepped portion of another extruded shape member joined when the panel is formed. In order to make this possible, by providing the reinforcing plate 21, the rigidity of the vehicle body can be increased as necessary. For example, as shown in FIGS. 6 and 7, in the door pockets U1 and U2 adjacent to the entrance S3, the entrance post 22 and the door bottom post 23 arranged in parallel to the entrance post 22 on the opposite side of the entrance S3. In the meantime, between the entrance pillar 22 and the pillar 24 provided in the opening S2, a single skin structure is formed between the double skin structures. By providing the reinforcing plate 21 so as to be bridged between them, the rigidity of the vehicle body can be increased as if the end portion 11B of the single skin structure is a double skin structure.

  By the way, since the opening S3 serving as the entrance / exit is generally rectangular in a side view, the lower corner R of the opening S3 is formed in order to avoid stress concentration at the lower corners thereof. It has a curved shape.

  In the portion corresponding to the lower corner R of the opening S3, as shown in FIG. 9, an extruded shape member 13 is arranged instead of the extruded shape member 11. This extruded shape member 13 is the above-described extruded shape. The structure is basically the same as that of the material 11 (see, for example, FIG. 4). As shown in FIG. 10, the center portion 13A of the double skin structure and the end portion 13B of the single skin structure provided continuously on both sides thereof are provided. And have. The central portion 13A of the double skin structure includes an outer face plate portion 13a that is the outer side (surface exposed portion) of the vehicle body, an inner face plate portion 13b that extends in parallel with the outer face plate portion 13a and is the inner side of the vehicle body, and an outer side and an inner side. A plurality of vertical web portions 13c extending in a direction orthogonal to the face plate portions 13a and 13b and connecting them. And the thickness of the part corresponding to the lower corner portion R of the opening S3 serving as the entrance / exit of the outer face plate portion 13a is different from that for securing the necessary rigidity as the lower corner portion R of the opening S3. The thick face plate portion 13aa is approximately three times as thick as the face plate portions 13a and 13b. Needless to say, the vertical web portion 13c 'is shorter in the thick face plate portion 13aa than in the other face plate portion 13a.

  By removing a part of the extruded shape member 13 (part of the thick face plate portion 13aa) by cutting, the lower corner R of the opening S3 has a curved shape. Thus, the lower corner R is formed by the extruded shape member 13 itself. The inner face plate portion 13b and the vertical web portion 13c are also removed by cutting inside the lower corner portion R (curved portion) and on the opening S3 side of the inlet column 22.

  Further, an inlet column 22 extending in the vertical direction of the structure is provided inside the extruded shape member 13 in the vicinity of the opening S3. The inlet column 22 includes an outer plate portion 22a constituting an outer surface and a pair of side column portions 22b and 22c provided inside the outer plate portion and extending substantially parallel to the vertical direction of the structure.

  11 (a), 11 (b) and 12 (a), the thickness of the portion 13aa which is the outer face plate portion of the extruded shape member 13 and is formed thick is the inlet column 22. The thickness of the outer plate portion 22a is substantially the same. The extruded shape member 13 and the inlet column 22 are joined by welding (see welded portions M1, M2, M3, and M4 in FIG. 11).

Specifically, an engaging portion 13 </ b> C is formed by cutting out the extruded shape 13 in a portion corresponding to the entrance post 22 above the portion of the extruded shape 13 that forms the lower corner R. On the other hand, the inlet column 22 has a lower portion (a part) of the outer plate portion 22a cut away to form an engaged portion 22A corresponding to the engaging portion 13C. By engaging the engaging portion 13C with the engaged portion 22A, the upper notch surface of the outer face plate portion 13aa contacts the cut surface of the outer plate portion 22a, and the inner face plate portion 13b contacts the side column portion 22b. And the cutout surface of the vertical web portion 13c are in contact with each other, and the pair of side column portions 22b and 22c are in contact with the inner surface of the face plate portion 13aa, and they are joined together by welding to form the lower corner of the opening S3. An extruded shape member 13 is disposed so as to straddle R.

  In this engaging portion, the outer side surfaces of the face plate portions 13a and 13aa of the extruded shape member 13 are continuous with the outer side surface of the upper inlet column 22 (outer plate portion 22a), and the outer side surface of the side structure 2R is formed. It comes to form. Thereby, necessary rigidity is ensured.

  In this way, since the extruded shape member 13 (base material) itself forms the lower corner R of the opening, the rigidity of the face plate portion 13aa of the extruded shape member 13 at this portion is insufficient with a normal plate thickness. Therefore, as described above, the face plate portion 13aa at the position corresponding to the lower corner is thickened.

  As a result, the lower corner R at the doorway where stress is concentrated serves as a base material, so that the fatigue strength can be improved with a smaller plate thickness than when a thick reinforcing plate is attached by welding. Therefore, since it is not necessary to provide a thick reinforcing plate by welding, there is no welding defect and an unexpected situation can be avoided.

  In the above embodiment, the lower corner of the opening S3 is the lower corner R. However, the upper corner of the opening S3 serving as the doorway and the upper and lower corners of the openings S1 and S2 serving as the window openings (see FIG. 2). Needless to say, it can be configured in the same manner as the lower corner of the opening S3 serving as the aforementioned entrance / exit.

It is a cross-sectional view of the side structure of a railway vehicle which is an embodiment of the present invention. It is a perspective view of a railway vehicle using the side structure. (A) (b) (c) is sectional drawing of the part used as a fall window opening, a fixed window opening, and an entrance / exit, respectively. It is sectional drawing of an extruded shape member. It is explanatory drawing of the junction part of an extruded shape member. (A) is the figure which looked at the side structure from the vehicle body inner side, (b) is sectional drawing in the AA of FIG. 6 (a). It is an enlarged view of the G section of Drawing 6 (b). (A) is explanatory drawing of the attachment state of a support bolt, (b) is sectional drawing in the BB line of Fig.8 (a). It is a perspective view which shows the state which looked at the detail of N part of Fig.6 (a) from the outer side of the vehicle. It is sectional drawing of another extrusion shape member. (A) is sectional drawing in CC line of FIG. 9, (b) is sectional drawing in the DD line of FIG. 6A is a front view, FIG. 6B is a rear view, FIG. 6C is a cross-sectional view, and FIG. 6D is a plan view. The lower corner part of an opening is shown, (a) is a perspective view which shows schematic structure of a prior art example, (a) is a perspective view which shows schematic structure of the example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rail vehicle structure 2L, 2R Side structure 11, 12, 13 Extruded shape member 11g Step part 13A Center part 13B End part 13C Engagement part 11a, 11b Face plate part 13a, 13aa Face plate part 13c Vertical web part 21 Reinforcement plate 22 Entrance pillar 22a Outer plate part 22b Posting part 22A Engaged part S3 Opening R Lower corner

Claims (6)

An outer surface plate portion provided outside the railway vehicle and extending in the longitudinal direction of the vehicle, an inner surface plate portion disposed in parallel with the outer surface plate portion, and provided on the inner side of the rail vehicle, the outer surface plate portion and the inner surface An extruded profile having a plurality of web portions connecting the face plate portions;
An opening having an arcuate corner formed in the extruded profile ;
Provided at at least one of the left and right ends of the opening, and includes an entrance post extending in the vehicle vertical direction,
The extruded frame members has an engagement portion at an upper end corner portion of the opening portion, the thickness of the outer side plate portions in the corners rather thick than the thickness of the inner side plate portion,
The entrance column has a engaged structure that engages with the engaging portion at a lower end portion thereof .   The side structure of a railway vehicle according to claim 1, wherein in the region excluding the corner, the outer side plate portion and the inner side plate portion have substantially the same thickness. The entrance pillar is
An outer plate provided so as to be substantially flush with the outer side plate, and extending in the vehicle vertical direction except for the corner of the opening;
It is provided inside the railway vehicle with respect to the outer plate part, and has a side pillar part extending in the vehicle vertical direction,
The thickness of the outer side plate portions of the corners, the thickness substantially the same as the skin portion, the side structure of the railway vehicle according to claim 1. A plurality of openings formed by joining an upper structure and a lower structure extending in the longitudinal direction of the vehicle, provided at predetermined intervals along the longitudinal direction of the vehicle, and having a circular arc shape at the corners, and the opening A side structure of a railway vehicle that is provided on at least one of the left and right ends of the section and includes an entrance post extending in the vehicle vertical direction ,
The upper side structure is
A first outer side plate provided on the outside of the railway vehicle, a first inner side plate provided on the inner side of the rail vehicle, and a plurality of first connecting the first outer side plate and the first inner side plate. A web portion and a first recess formed at a position corresponding to the opening,
The lower structure is
A second outer side plate provided on the outside of the railway vehicle; a second inner side plate provided on the inner side of the railway vehicle; and a plurality of second connecting the second outer side plate and the second inner side plate. 2 web portions, a second recess formed at a position corresponding to the opening, and an engaging portion at the upper end of the corner of the opening ,
The thickness of the second outer surface plate portion in the corners, rather thick than the thickness of said second inner surface plate portion,
The entrance column has a engaged structure that engages with the engaging portion at a lower end portion thereof . The upper side structure is
A first end portion projecting downward in the vehicle vertical direction to form a single skin structure;
The lower structure is
Projecting upward in the vehicle vertical direction to form a single skin structure, further comprising a second end joined to the first end;
The side structure of a railway vehicle according to claim 4 , further comprising a reinforcing member that bridges the first inner side plate and the second inner side plate at a portion corresponding to the single skin structure. Further comprising a Tojiri column provided parallel to the entrance column,
6. The side structure of a railway vehicle according to claim 5 , wherein the reinforcing member extends between the entrance post and the door bottom post and extends in the longitudinal direction of the vehicle.

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