CN218703231U - Rail vehicle laser welding stainless steel side wall structure - Google Patents
Rail vehicle laser welding stainless steel side wall structure Download PDFInfo
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- CN218703231U CN218703231U CN202222707687.5U CN202222707687U CN218703231U CN 218703231 U CN218703231 U CN 218703231U CN 202222707687 U CN202222707687 U CN 202222707687U CN 218703231 U CN218703231 U CN 218703231U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The utility model belongs to the technical field of rail vehicle, a rail vehicle laser welding stainless steel side wall structure is related to, this side wall structure includes side wall board, side wall skeleton, and the side wall skeleton includes stand, side wall roof beam, side wall sill; the utility model discloses a side wall roof beam, including stand, side wall roof beam, buckled plate, side wall board and side wall roof beam, the side wall roof beam is B type roof beam, the upper end and the side wall roof beam arc welding of stand are connected, and the lower extreme of stand is connected with the last flank arc welding of side wall roof beam, still be provided with the buckled plate between side wall board and the side wall skeleton, the buckled plate is fixed in the middle of stand and side wall board, side wall board and side wall roof beam, buckled plate adopt the intermittent welding of laser welding, and the side wall board sets up with the lower flank of side wall roof beam relatively. This side wall structure uses the buckled plate to replace traditional reinforcement beam structure and crossbeam structure, and the side wall board all adopts laser welding to be connected with buckled plate, buckled plate and side wall skeleton, not only can reduce side wall structure welding deformation, improves the outside surface flatness of side wall, can also improve the whole appearance quality of vehicle.
Description
Technical Field
The utility model belongs to the technical field of rail vehicle, a rail vehicle side wall structure is related to, concretely relates to rail vehicle laser welding stainless steel side wall structure.
Background
The side wall structure of the existing railway vehicle comprises a side wall plate 1 and a side wall framework; the side wall framework is formed by welding an upright post 2, a cross beam 3 and a reinforcing beam 4; the side wall plate 1 is connected with the upright post, the cross beam and the reinforcing beam of the side wall framework through resistance spot welding (as shown in figure 1). Due to the characteristics of spot welding, the spot welding process is high in heating intensity and short in time, welding defects such as splashing, insufficient welding and poor fusion forming are easily caused, meanwhile, a welding spot has a certain indentation after being heated and fused, the indentation depth and the thermal deformation of the welding spot with different thicknesses are different, the flatness of spot welding areas of parts such as a side wall plate and a stand column, a reinforcing beam and a window frame of a side wall framework is poor, the indentation is spot-welded on the outer surface of the side wall plate, and the overall appearance effect of a car body steel structure is unsatisfactory.
SUMMERY OF THE UTILITY MODEL
In view of the technical problem, an object of the utility model is to provide a rail vehicle laser welding stainless steel side wall structure, this side wall structure use the buckled plate to replace traditional reinforcement beam structure and crossbeam structure, and the side wall board all adopts laser welding with buckled plate, buckled plate and side wall skeleton to be connected, not only can reduce side wall structure welding deformation, improves the outside surface flatness of side wall, can also improve the whole appearance quality of vehicle.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a rail vehicle laser welding stainless steel side wall structure comprises a side wall plate and a side wall framework, wherein the side wall framework comprises an upright post, a side wall upper edge beam and a side wall lower edge beam; the utility model discloses a side wall roof beam, including stand, side wall roof beam, buckled plate, side wall board and side wall roof beam, the side wall roof beam is B type roof beam, the upper end and the side wall roof beam arc welding of stand are connected, and the lower extreme of stand is connected with the last flank arc welding of side wall roof beam, still be provided with the buckled plate between side wall board and the side wall skeleton, the buckled plate is fixed in the middle of stand and side wall board, side wall board and side wall roof beam, buckled plate adopt the intermittent welding of laser welding, and the side wall board sets up with the lower flank of side wall roof beam relatively.
As the utility model discloses a preferred, the cross-section of stand is several style of calligraphy structures, the curb girder is C type roof beam on the curb wall, the ripple shape of buckled plate is continuous several style of calligraphy.
Preferably, the side wall plate is an SUS301 austenitic stainless steel plate, and the thickness is controlled to be 1.5-2mm; the corrugated plate is an SUS301L-MT stainless steel corrugated plate, and the thickness is controlled to be 0.6mm; the upright post is formed by bending an SUS301L-ST stainless steel plate, and the thickness is controlled to be 1.5-2mm; the side wall upper edge beam and the side wall lower edge beam are formed by bending SUS301L-MT stainless steel plates, and the thickness is controlled to be 2mm.
As the utility model discloses a preferred, the intermediate space of stand sets up the polylith buckled plate, the ripple groove of buckled plate is along the car length direction.
As the utility model discloses a preferred, the middle zone of stand adopts the intermittent type welding of laser beam welding with the buckled plate.
As the optimization of the utility model, the length of the welding seam of the side wall plate and the side wall upper edge beam is 40-50mm according to the structure space, and the distance between the adjacent welding seams is 35-40mm; the length of the laser welding seam between the side wall plate and the corrugated plate is 50mm, and the distance between adjacent welding seams is 45mm; the length of the welding seam of the laser welding of the upright post and the corrugated plate is 30-40mm, and the distance between adjacent welding seams is 40-45mm.
The utility model discloses an advantage and beneficial effect:
(1) The utility model provides a side wall structure uses the buckled plate to replace traditional strengthening beam structure and crossbeam structure, and side wall board and buckled plate, buckled plate all adopt laser welding to be connected with the skeleton, and laser welding has that the heating area is little, and welding deformation is little, and the advantage that the welding seam shaping is good consequently adopts laser welding to be connected side wall board and side wall skeleton, not only can reduce side wall structure welding deformation, improves the side wall surface plane degree, can also improve the whole appearance quality of vehicle, promotes the whole quality of product.
(2) The side wall structure of the utility model replaces the point connection of resistance spot welding by the line connection of laser stitch welding, which can not only satisfy the structural strength, but also ensure the surface flatness quality of the side wall, compared with the original resistance spot welding structure, the welding seam density is improved by 20 percent, and the single welding seam strength is 2 times higher than the standard value of the strength of the resistance spot welding joint; through the whole static strength test of automobile body, the result shows the utility model discloses an anti transverse impact ability of side wall structure is showing and is promoting, and fatigue strength improves more than 15%.
(3) The utility model discloses a side wall structure sets up the buckled plate between side wall board and side wall skeleton, and the ripple groove of buckled plate along the car length direction, this kind of bulk strength that sets up the mode and can increase the side wall structure can satisfy standard EN12663 (rail vehicle body structure requirement) through the test of automobile body bulk strength, can use in batches in the stainless steel rail vehicle project.
(4) The utility model discloses a side wall skeleton includes stand, side wall roof beam down, the roof beam is C type roof beam on the side wall, side wall roof beam down is B type roof beam, the last flank and the stand arc-welding of B type roof beam are connected, the lower flank and the side wall board of B type roof beam set up relatively, but both are disconnected, follow-up whole side wall structrual installation welds together with the chassis after on the chassis, the plane degree of side wall structure can further be guaranteed to this kind of structure, the bulk strength of side wall structure can also be guaranteed simultaneously.
(5) The side wall framework self-composition and the connection of the side wall framework and the side wall plate of the traditional spot welding respectively need to be provided with a tool tire position to complete welding, and the side wall framework comprises side wall framework tools (a plurality of) and side wall spot welding tools, and the side wall framework needs to be provided with a plurality of tool tire positions due to different local structures, so that an additional production field, personnel and additional tool cost are needed, and the production cost is high; and the utility model discloses a laser welding side wall structure because side wall board and buckled plate, buckled plate all adopt laser welding to be connected with the skeleton, so only need accomplish at a laser welding frock child position, the processing frock that has significantly reduced and production personnel quantity has both improved production efficiency, has reduced manufacturing cost again.
Drawings
FIG. 1 is a schematic structural diagram of a conventional spot-welded side wall;
FIG. 2 is a schematic structural view of the laser-welded stainless steel side wall structure of the present invention;
FIG. 3 is a schematic view showing the connection of the corrugated plate, the side wall upper edge beam, the upright post and the side wall plate;
FIG. 4 is a three-dimensional schematic view of the laser welding of the corrugated plate and the sidewall plate of the present invention;
fig. 5 is a three-dimensional schematic view of laser welding of a corrugated plate and a column according to the present invention;
FIG. 6 is a schematic view of the connection between the side wall lower boundary beam and the upright post of the present invention;
reference numerals: side wall board 1, side wall roof side rail 2, side wall sill 3, buckled plate 4, stand 5, last flank 31, lower flank 32.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments.
In the description of the present application, it should be noted that the terms "in", "under", and the like indicate the orientation or positional relationship: the particular arrangements or components shown in the drawings, or the orientations or positional relationships conventionally used in the manufacture of the applications, are for convenience only and to simplify the description, and are not intended to indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The utility model provides a rail vehicle laser welding stainless steel side wall structure, figure 2 is rail vehicle laser welding stainless steel side wall structure's schematic structure drawing, and figure 3 to figure 6 are rail vehicle laser welding stainless steel side wall structure each parts's connection schematic diagram.
As shown in fig. 2 to 6, the laser-welded stainless steel side wall structure for rail vehicles provided by the present invention comprises a side wall plate 1, a side wall skeleton, and a corrugated plate 4; the side wall framework comprises a plurality of stand columns 5, a side wall upper side beam 2 and a side wall lower side beam 3, wherein the stand columns 5 are arranged at intervals, the upper ends of the stand columns 5 are in arc welding connection with the side wall upper side beam 2, and the lower ends of the stand columns 5 are in arc welding connection with the side wall lower side beam 3; corrugated plate 4 sets up between side wall board 1 and side wall skeleton, and fixes in the middle zone of stand 5, side wall board 1 adopts laser beam welding intermittent type welding with side wall roof beam 2, corrugated plate 4 on.
The side wall plate 1 in the embodiment is an SUS301 austenitic stainless steel plate, and the thickness is controlled to be 1.5-2mm; the side wall upper edge beam 2 is a C-shaped beam formed by bending an SUS301L-MT stainless steel plate, and the thickness of the side wall upper edge beam 2 is controlled to be 2mm; the side wall lower edge beam 3 is a B-shaped beam formed by bending an SUS301L-MT stainless steel plate, and the thickness of the B-shaped beam is controlled to be 2mm; the upright post 5 is formed by bending an SUS301L-ST stainless steel plate and has a cross section with a structure like a Chinese character 'ji', and the thickness of the upright post is controlled to be 1.5-2mm; the buckled plate is SUS301L-MT stainless steel buckled plate, and the thickness control of buckled plate is at 0.6mm, and the ripple shape of buckled plate is continuous several fonts, and the selection of above-mentioned material and the control of thickness are more applicable to laser welding.
Furthermore, a plurality of corrugated plates 4 are arranged in the middle of the upright post 5 at intervals, the upright post 5 and the corrugated plates 4 are welded intermittently by laser welding, and corrugated grooves of the corrugated plates 4 are arranged along the vehicle length direction, so that the overall strength of the side wall structure can be improved;
further, the lower end of the stand column 5 is connected with the upper wing surface 31 of the side wall lower edge beam 3 through arc welding, the lower wing surface 32 of the side wall lower edge beam is arranged opposite to the side wall plate 1 and is not connected with the side wall plate, the follow-up integral side wall structure is arranged on the bottom frame and then welded with the bottom frame, the flatness of the side wall structure can be further guaranteed through the structure, and meanwhile the integral strength of the side wall structure can be guaranteed.
In the side wall structure provided by the embodiment, a connection mode of laser welding intermittent welding is adopted between the corrugated plate 4 and the upright post 5, and between the corrugated plate 4, the side wall roof side rail 2 and the side wall plate 1; during production and processing, the side wall boundary beam 2 and the corrugated plate 4 are firstly assembled to complete laser welding with the side wall plate 1; then the upright posts 5 are assembled and welded with the side wall boundary beam 2 and the corrugated plate 4; and finally, assembling the side wall lower edge beam 3 and completing welding with the upright post 5. When the laser welding is carried out intermittent welding, the length of the laser welding seam and the distance between adjacent welding seams can be adjusted according to the size, strength requirements and the like of the side wall structure. According to the embodiment, the length of a welding seam of the side wall plate and the side wall upper edge beam is 40-50mm according to the structure space, and the distance between adjacent welding seams is 35-40mm; the length of the laser welding seam between the side wall plate and the corrugated plate is 50mm, and the distance between adjacent welding seams is 45mm; the length of the laser welding seam between the upright post and the corrugated plate is 30-40mm, and the distance between adjacent welding seams is 40-45mm.
The utility model uses the line connection of laser stitch welding to replace the point connection of resistance spot welding, researches the influence of laser power and welding speed on weld joint widening, weld joint penetration, maximum shearing load and the back quality of the lower plate (side wall plate), and optimizes the laser welding parameters by combining the maximum shearing load standard and the outer surface quality standard of the lower plate (side wall plate); finally, laser welding parameters are set to be 1200W of laser power, 30mm/s of welding speed and f =0 of defocusing amount, so that structural strength can be met, and the surface flatness quality of the side wall can be guaranteed; compared with the original resistance spot welding structure, the welding seam density is improved by 20 percent, and the strength of a single welding seam is 2 times higher than the standard value of the strength of a resistance spot welding joint; through the test of the integral static strength of the vehicle body, the result shows that the transverse impact resistance is obviously improved, and the fatigue strength is improved by more than 15 percent.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and not for limiting the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (6)
1. The utility model provides a rail vehicle laser welding stainless steel side wall structure, includes side wall board, side wall skeleton, its characterized in that: the side wall framework comprises upright columns, side wall upper edge beams and side wall lower edge beams; the utility model discloses a side wall, including stand, side wall roof beam, buckled plate, side wall board and side wall roof beam, the side wall roof beam is type B roof beam, the upper end and the side wall roof beam arc welding of stand are connected, and the lower extreme of stand is connected with the last flank arc welding of side wall roof beam, still be provided with the buckled plate between side wall board and the side wall skeleton, the buckled plate is fixed in the middle of stand and side wall board, side wall board and side wall roof beam, buckled plate adopt the intermittent welding of laser welding, and the side wall board sets up with the lower flank of side wall roof beam relatively.
2. The rail vehicle laser welded stainless steel side wall structure of claim 1, wherein: the cross section of the upright post is of a structure shaped like a Chinese character 'ji', the side wall upper edge beam is a C-shaped beam, and the corrugated plate is continuous and shaped like a Chinese character 'ji'.
3. The rail vehicle laser welded stainless steel side wall structure of claim 1, wherein: the side wall plate is an SUS301 austenitic stainless steel plate, and the thickness is controlled to be 1.5-2mm; the corrugated plate is an SUS301L-MT stainless steel corrugated plate, and the thickness is controlled to be 0.6mm; the upright post is formed by bending an SUS301L-ST stainless steel plate, and the thickness is controlled to be 1.5-2mm; the side wall upper edge beam and the side wall lower edge beam are formed by bending SUS301L-MT stainless steel plates, and the thickness is controlled to be 2mm.
4. The rail vehicle laser welded stainless steel side wall structure of claim 1, wherein: the middle interval of stand sets up the polylith buckled plate, the ripple groove of buckled plate is along car length direction.
5. The rail vehicle laser welded stainless steel side wall structure of claim 1, wherein: the middle area of the upright post and the corrugated plate are welded intermittently by laser welding.
6. The rail vehicle laser welded stainless steel side wall structure of claim 5, wherein: the length of the welding seam of the side wall plate and the side wall upper edge beam is 40-50mm according to the structural space, and the distance between adjacent welding seams is 35-40mm; the length of the laser welding seam between the side wall plate and the corrugated plate is 50mm, and the distance between adjacent welding seams is 45mm; the length of the laser welding seam between the upright post and the corrugated plate is 30-40mm, and the distance between adjacent welding seams is 40-45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222707687.5U CN218703231U (en) | 2022-10-14 | 2022-10-14 | Rail vehicle laser welding stainless steel side wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222707687.5U CN218703231U (en) | 2022-10-14 | 2022-10-14 | Rail vehicle laser welding stainless steel side wall structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218703231U true CN218703231U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222707687.5U Active CN218703231U (en) | 2022-10-14 | 2022-10-14 | Rail vehicle laser welding stainless steel side wall structure |
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| CN (1) | CN218703231U (en) |
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2022
- 2022-10-14 CN CN202222707687.5U patent/CN218703231U/en active Active
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