JP4724161B2 - Bonding method and structure of the outer periphery of the railcar structure and the long material - Google Patents

Description

The present invention mainly includes a lower end of a vertically-oriented member preliminarily bonded to an inner surface of an outer plate of a railway vehicle structure made of ordinary steel, a peripheral portion of the outer plate protruding from the lower end, and the peripheral portion. outer plate around the long material of the railway car body structure that binds at least an outer wall and said outer wall and the upper inward wall of roll forming has been long material to have a the inward wall bent inwardly from the outer wall, the It relates to the coupling method and structure of

  The above-mentioned long material is represented by a side beam (for example, refer to the section of page 100, page 100 of Non-Patent Document 1) and a long base (for example, refer to Patent Document 1) in the frame of the railway vehicle structure. A door pocket outer pillar (for example, refer to the section of Non-Patent Document 1, page 101 side structure) that runs vertically along the doorway of the board also corresponds and is manufactured by sheet metal processing. The side beams are generally U-shaped in section with inward walls extending inwardly above and below the outer wall. When this inward wall is a bent wall formed by bending inward from the outer wall, the inner corner portion formed by bending as shown in FIGS. 2 to 3 has a radius of curvature that is several times the plate thickness, for example. By having a shape, extreme internal distortion and deterioration due to extreme bending are not given.

  Conventionally, in the example shown in FIG. 2, the side beam a and the outer plate b are combined with the outer surface of the outer wall a1 of the side beam a and the outer surface of the outer plate b. Are welded and joined so as to be filled with a weld bead c. In this case, when the vertical member d such as various vertical columns is coupled prior to the inner surface of the outer plate b and the lower end of the vertical member d is placed on the side beam a, the outer plate b Can be received on the side beam a via the vertically oriented material d, so that the alignment and joining of the outer plate b and the side beam a can be facilitated. Further, the lower end of the longitudinal member d and the inward wall a2 above the side beam a are welded and joined so that the gap between them is filled with the weld bead e (for example, the frame of Non-Patent Document 1 page 100) The relationship is that the surface of the side beam and the lower end of the outer plate of the side structure on page 101 are abutted and joined.)

  In the example shown in FIG. 3, the outer plate b extending downward from the longitudinal member d is covered to the middle of the outer surface of the vertical wall a1 of the side beam a, and the hem end of the outer plate b and the outer surface of the vertical wall a1. (See, for example, the floor structure on page 103 of Non-Patent Document 1; however, it differs in that a plate material is interposed between the coupling surfaces). However, it does not change substantially.)

In the example shown in FIG. 4, the outer plate b extending downward from the longitudinal member d is covered so that the bottom end thereof is lower than the vertical wall a <b> 1 of the side beam a, and is joined by the plug weld portion f. (For example, refer to Patent Document 1. However, although the laser welding is different, the covering method of the outer plate is the same.)
Railway car mechanism picture book Grand Prix Publishing Co., Ltd. JP 2007-168546 A

  However, the conventional example shown in FIG. 2 has many drawbacks in terms of construction and quality. On the construction surface, positioning is required to match the outer surface of the outer plate b and the outer surface of the side beam a over the entire length of the vehicle, but there is no firm position reference and it is practically difficult to match so, and there is a step between both outer surfaces. It is often possible to make a gap. In addition, since the radius of curvature of the outer corner portion between the outer wall a1 of the side beam a and the upper inward wall a2 is large, the volume of the weld bead c filling the space between the hem ends of the outer plate b increases. The amount of heat input by welding increases by that amount. Furthermore, due to these, irregularities are formed on the outer plate b, and there are also problems in terms of quality in which good joint welding cannot be performed. Further, since the outer plate b and the outer wall a1 of the side beam a do not overlap, and the weld joint position with the weld bead c and the weld joint position with the weld bead e are aligned at the same height, the outer plate The shear fracture strength when a lateral external force due to a collision or the like acts on either the b side or the side beam a is low.

  In the conventional example shown in FIG. 3, the outer plate b is applied so as to overlap partway of the outer wall a1 of the side beam a, and its hem end is welded to the side beam a, so that both positioning is easy. The difference between the overlap and the height of the weld joint position with the weld bead c and the weld joint position with the weld bead e makes it easy to guarantee the shear fracture strength against the external force from the lateral direction. is there. However, a step is formed between the portion where the outer plate b of the outer surface of the side beam a overlaps with the portion which does not overlap the outer surface of the vehicle, but is painted with a normal steel structure or the like. In this case, in the putty construction before painting, the film thickness of the putty changes abruptly at the hem end of the outer plate b. This adversely affects the coating quality. Specifically, a streak enters at the bottom end of the outer plate b, or cracks occur in the coating film in the worst case.

  In the conventional example shown in FIG. 4, the outer plate b is applied to the outer wall a <b> 1 of the side beam a so that the bottom end overlaps the lower side and welded at the overlapping portion, so that both positioning is easy. In addition, there is an advantage that it is easy to guarantee the bonding strength against the lateral external force, and there is no step on the outer surface of the vehicle, so that the coating film is not streaked or cracked. However, there is a problem that rainwater enters and rusts in a region that is not sealed to the outside by welding between the overlapping surfaces of the outer plate b and the outer wall a1 of the side beam a, and the outer plate b swells up. Such a problem also occurs between the laser-welded outer plate and the long base disclosed in Patent Document 1 in a portion below the lower laser welding position if the material is ordinary steel.

  An object of the present invention is to provide a long part having a peripheral part of an outer plate of a railway vehicle structure mainly made of ordinary steel, at least an outer wall disposed along the peripheral part and an inward wall bent inward from the outer wall. An object of the present invention is to provide a method and a structure for connecting a periphery of an outer plate of a railway vehicle structure and a long member, which can be connected to a measure member without the above-described problems.

In order to achieve the object as described above, the method of joining the periphery of the outer plate of the railway vehicle structure and the elongated material of the present invention is the lower end of the vertically oriented material previously joined to the inner surface of the outer plate of the railway vehicle structure, And the outer wall of the elongated material that has been bent and includes a peripheral portion of the outer plate protruding from the lower end, at least the outer wall and an inward wall bent inward from the outer wall. And a long material with a weld bead between the lower end of the vertical material and the upper inward wall of the long material. In addition to the welding connection, this step is applied to the long material, with the step of retreating the area where the outer plate is applied in the width direction of the outer wall to the inner side by the thickness equivalent to the outer plate. Place the periphery of the outer plate against the receding flat surface that has been receded by processing, Retracted welded so as to fill in the weld bead between a peripheral edge of the step portion and the outer plate are opposed to between the flat surface and a non-retraction plane, the outer surface and the outer wall of the long material of the outer plate non It is characterized in that it is coupled so that there is no step on the receding surface.

In such a configuration, a step processing with a bending process that is not normally performed is applied to a long material of a bent material having at least an outer wall and an inward wall bent inward from the outer wall in the width direction of the outer wall. By applying the outer plate application area up to the middle so that the outer plate is flattened by the thickness of the outer plate, the peripheral part of the outer plate is applied to the receding flat surface by step processing, and the outer plate is By simply contacting the step between the receding flat surface and the non-retreating surface of the outer surface, the outer plate and the elongated material can be easily positioned over the entire length without variation, and the outer surface of the outer plate and the elongated material are also positioned. Can be lined up at the same height. In addition, the positioning guarantees a uniform gap between the step of the long material and the peripheral edge of the outer plate opposite to the gap, and the minimum gap necessary for welding connection. By welding so as to fill , the welded bead is welded between the lower end of the longitudinal member that is pre-bonded to the inner surface of the outer plate and the upper inward wall of the long member, as designed. Can be bonded with the strength of.

In order to achieve the above object, the connecting structure between the periphery of the outer plate of the railway vehicle structure and the elongated material of the present invention is the lower end of the vertically oriented material previously connected to the inner surface of the outer plate of the railway vehicle structure, And the outer wall of the elongated material that has been bent and includes a peripheral portion of the outer plate protruding from the lower end, at least the outer wall and an inward wall bent inward from the outer wall. And a structure in which the periphery of the outer plate of the railway vehicle structure and the long material are joined to each other, and the long material has a weld bead between the lower end of the vertical material and the upper inward wall. And the peripheral portion of the outer plate is applied to a receding flat surface which is flattened inward by an amount corresponding to the thickness of the outer plate by step processing in the outer plate contact area in the width direction of the outer wall. There, near the outer plate opposite thereto and the stepped portion between the retracted flat face and a non-retraction plane During are welded so as to fill in the weld bead to the, characterized in that no step and a non-retraction plane outer surface and the outer wall of the long material of the outer plate.

According to the method of joining the elongated material periphery and the elongated material of the railway vehicle structure of the present invention, the elongated material of the bent material having at least the outer wall and the inward wall bent inward from the outer wall, Stepping with bending is performed by retreating the area of the outer plate that extends halfway in the width direction of the outer wall by retreating the outer plate by the thickness of the outer plate. The outer plate and the long material are simply positioned without any variation over the entire length simply by abutting the outer plate against the step and guaranteed between the opposing step and the peripheral edge of the outer plate. In order to prevent rainwater from entering due to the sealing effect between the outer plate and the long material, welding is performed so that the minimum groove recess necessary for welding connection is filled with the weld bead. Non-retracted surfaces are lined up at the same height and can be joined evenly without gaps or irregularities. Guaranteed finish no cracks in the usual smooth by putty and painting performed when a and advantageous high bonding strength corrupted fracture shear due to overlapping of the outer plate and the long material is obtained. Moreover, a welded joint having a bead between the peripheral edge of the outer plate and the stepped portion of the long member, a lower end of the vertical member previously bonded to the inner surface of the outer plate, and an upper inward wall of the long member Since the welded joints having a weld bead cooperate with each other with a difference in height, a joint strength advantageous for shear fracture can be obtained.

Hereinafter, a method and a structure for joining a periphery of an outer plate and a long material of a railway vehicle structure according to an embodiment of the present invention will be described with reference to FIG. 1 for an understanding of the present invention. The following description and illustration are specific examples of the present invention, and do not limit the description of the scope of the claims.

  In the present embodiment, the lower peripheral portion of the outer plate 2 of the side structure 1 made of plain steel as shown in FIG. 1 and the side beam 4 facing the longitudinal direction of the vehicle frame 3 arranged along the outer plate 2 are coupled. It is an example in the case of a method and a structure, and the side beam 4 has an outer wall 4a and an inward wall 4b bent inwardly from the upper and lower sides of the outer wall 4a. The frame 3 is configured by being coupled to the lateral beams 5 and the end beams which are arranged on both sides of the vehicle and directed in the vehicle width direction. However, the present invention is not limited to this, and any portion that has the outer plate of the entire railway vehicle structure and is joined by the long material referred to in the present invention is arranged around the outer plate. For example, in the side structure 1, the outer plate 2 is coupled with a doorcase outer column and a long girder, the outer frame of the roof structure is coupled with a long girder, the outer plate of the wife structure and the end beams and the columns of the underframe Are applied to at least one of them.

  In the present embodiment, the side beam 4 is used to connect the lower peripheral portion 2a of the outer plate 2 of the side structure 1 and the side beam 4 as a long material disposed along the lower peripheral portion 2a. In the state shown in FIG. 1 in which the step 6 is retreated to the inside corresponding to the thickness t of the outer plate 2 by retreating the contact region 6 of the outer plate 2 up to the middle of the outer wall 4a in the width direction. The lower peripheral portion 2a of the outer plate 2 is applied to the surface 4c as shown in FIG. 1, and the step portion 4e between the receding surface 4c and the non-retreating surface 4d of the side beam 4 and the outer plate facing the stepped portion 4e. 4 is used so that there is no step between the outer surface of the outer plate 2 and the non-retreating surface 4e of the outer wall 4a of the side beam 4. ing. In addition, although electric welding is normally employ | adopted as welding, it is not restricted to this, What is necessary is just to be able to form a weld bead and to exhibit the sealing performance with respect to rain water.

In this way, the side beam 4 as the long bending material having the inward wall 4b bent inward from the outer wall 4a is subjected to a step processing that is not normally performed from the upper end of the outer wall 4a. By applying the contact area 6 of the outer plate 2 up to the middle in the width direction so as to be retracted by the thickness t of the outer plate 2, the peripheral portion 2a of the outer plate 2 is applied to the receding surface 4c by the step processing. By simply bringing the peripheral edge 2a1 of the plate 2 into contact with the step 4e between the retreating surface 4c and the non-retreating surface 4d of the outer surface of the side beam 4, the outer plate 2 and the side beam 4 can be easily and without variation over the entire length. 1 and the outer surface of the outer plate 2 and the non-retreating surface 4d of the side beam 4 are arranged at the same height as shown in FIG. In addition, the positioning ensures a minimum gap groove necessary for welding connection between the step 4e of the side beam 4 and the peripheral edge 2a1 of the outer plate 2 opposite to the step 4e. it can be coupled with strength as designed by welding to fill in the welding bead 7.

As a result, the side beam 4 which is a long bending material having at least the outer wall 4a and the inward wall 4b bent inwardly from the outer wall 4a is subjected to a step processing accompanied by bending, in the width direction of the outer wall 4a. Bending strength can be increased by applying the contact area 6 of the outer plate 2 up to the middle so as to recede by the thickness t of the outer plate 2, and the outer plate 2 is applied to the receding surface 4c of the outer surface of the side beam 4. The outer plate 2 and the side beams 4 are simply positioned without any variation over the entire length simply by abutting against the step 4e, and uniform between the facing step 4e and the peripheral edge 2a1 of the outer plate 2. In order to prevent rainwater from entering due to the sealing effect between the outer plate 2 and the side beam 4 by welding so that the minimum groove dent necessary for welding connection is filled with the weld bead 7, the outer plate 2 and the side beam 4 non-retreating surfaces 4d are aligned at the same height without gaps or irregularities Even if the welding bead 7 needs to be smoothed, it is possible to guarantee a smooth finish that does not cause cracks or the like by the putty and painting that are normally performed in the case of ordinary steel, and the overlap between the outer plate 2 and the side beam 4 preferred high bonding strength to shear fracture is obtained.

Such connection realizes a connection structure between the periphery of the outer plate of the railway vehicle structure and the long material as shown in FIG. Specifically, at least one peripheral portion 2a of the outer plate 2 of the side structure 1 is one of the railway car body structure, inwardly at least the outer wall 4a arranged along the peripheral portion 2a of the outer wall 4 a A side beam 4 as a long material having a bent inward wall 4b, which is a connection structure of a long material and a periphery of an outer plate of a railway vehicle structure, which is connected to the rail vehicle structure. Has a receding surface 4c that has been receded inwardly by an amount corresponding to the thickness t of the outer plate 2 by step machining in the outer plate hitting area 6 up to the middle of the outer wall 4a in the width direction, and the outer plate applied to the receding surface 4c. and second peripheral portion 2a and the side beams 4 as long material is, the outer plate 2 of the step portion 4e opposed thereto between a retracted surface 4c and a non-retracted face 4d of the side beams 4 as long material It is welded so as to be filled with the weld bead 7 between the peripheral edge 2a1 and the outer surface of the outer plate 2 and the long material. The coupling structure is characterized in that there is no step between the non-retreating surface 4 d of the outer wall 4 a of a side beam 4.

  In particular, since the long material is connected to the outer plate 2 of the side structure 1 by the side beam 4, the outer plate can be connected to the side beam 4 as the long member and the lower peripheral portion 2a of the outer plate 2. The welded joints having the weld beads 9 between the lower ends of the vertically oriented members 8 such as various pillar members to be joined to the inner surface of 2 and the upper inward walls 4b of the side beams 4 have different heights, That is, it is possible to obtain a bonding strength that works with a difference in height H and is advantageous for shear fracture.

  The present invention is not limited to ordinary steel, and the same effect can be obtained even when applied to a stainless steel one formed by bending. However, the effect on paintability is irrelevant if not generally painted as it is.

  INDUSTRIAL APPLICABILITY The present invention can be practically used for joining the periphery of the outer plate of a railway vehicle structure and a long material, and can satisfy all of joint strength, surface smoothness, paintability, and sealability.

It is sectional drawing which shows the coupling | bonding method and coupling | bonding structure of the peripheral part of the outer plate | board of a railway vehicle structure, and a long material of embodiment which concern on this invention. It is sectional drawing which shows an example of the conventional coupling | bonding method and coupling structure. It is sectional drawing which shows another example of the conventional coupling | bonding method and coupling structure. It is sectional drawing which shows the other example of the conventional coupling | bonding method and a coupling structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side structure 2 Outer plate 2a Peripheral part 2a1 Peripheral edge 3 Base frame 4 Side beam 4a Outer wall 4b Inward wall 4c Retreat surface 4d Non-retraction surface 4e Step 6 Contact area 7, 9 Weld bead 8 Longitudinal material

Claims (2)

The lower end of the longitudinal member previously joined to the inner surface of the outer plate of the railway vehicle structure, the peripheral portion of the outer plate protruding from the lower end, and at least the outer wall and the outer wall extending inward from the outer portion. A method of joining a long material with a periphery of an outer plate of a railway vehicle structure that joins the outer wall and the upper inward wall of a long processed material having a bent inward wall,
In addition to having a weld bead between the lower end of the longitudinal member and the upper inward wall of the long member, the long plate has an area where the outer plate is applied to the middle of the outer wall in the width direction. while subjected to step processing for flat retracted thickness equivalent inside of the outer panel, and therefore against the periphery of the outer plate in a retracted flat face retracted by the step processing, the retraction flat surface of the elongated workpiece Welding between the stepped portion between the outer plate and the non-retracted surface and the peripheral edge of the outer plate facing it with a weld bead, and the outer surface of the outer plate and the non-retracted surface of the outer wall of the long material A method for joining the periphery of the outer plate of a railway vehicle structure and a long material, characterized in that the steps are joined so that there is no step. The lower end of the longitudinal member previously joined to the inner surface of the outer plate of the railway vehicle structure, the peripheral portion of the outer plate protruding from the lower end, and at least the outer wall and the outer wall extending inward from the outer portion. The outer plate periphery of the railway vehicle structure and the long material coupling structure, which is a combination of the outer wall and the upper inward wall of the bent long material having a bent inward wall,
The long material is welded and joined with a weld bead between the lower end of the vertically oriented material and the upper inward wall, and the outer plate fitting area up to the middle of the outer wall in the width direction is stepped to form the outer plate. There are against the periphery of the outer plate in a retracted flat surface which is flat retracted equivalent inside thickness of the peripheral edge of the outer plate opposite thereto and the stepped portion between the retracted flat face and a non-retraction plane It is welded so that the gap is filled with a weld bead, and there is no step between the outer surface of the outer plate and the non-retreating surface of the outer wall of the long member. Bond structure.

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