CN113199146A - Side wall welding method and device, side wall, vehicle body and rail vehicle - Google Patents
Side wall welding method and device, side wall, vehicle body and rail vehicle Download PDFInfo
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- CN113199146A CN113199146A CN202110313657.3A CN202110313657A CN113199146A CN 113199146 A CN113199146 A CN 113199146A CN 202110313657 A CN202110313657 A CN 202110313657A CN 113199146 A CN113199146 A CN 113199146A
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- 238000003466 welding Methods 0.000 title claims abstract description 223
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 239000011324 bead Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/22—Spot welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/08—Sides
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- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a side wall welding method and device, a side wall, a vehicle body and a rail vehicle. The side wall welding method comprises the following steps: pressing the cross beam on the surface of the side wall plate; and spot welding the cross beam at intervals along the length direction of the cross beam by using a laser beam so as to weld the cross beam to the surface of the wallboard through a plurality of welding spots of spot welding. According to the side wall welding method, the welding and fixing of the cross beam on the wall plate are realized by utilizing laser single-side spot welding, namely, a plurality of spot welding spots formed on the cross beam replace full-length welding lines formed in the existing cross beam welding, so that the problem of local welding defects caused by the middle area of the full-length welding lines is completely avoided, and the welding quality between the cross beam and the wall plate is effectively improved on the basis of ensuring the welding strength of the cross beam.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a side wall welding method and device, a side wall, a vehicle body and a rail vehicle.
Background
In the existing railway vehicle, the side wall structure of the stainless steel vehicle body is usually manufactured by continuous laser welding, and the formed welding line is a full-length laser welding line. In order to ensure the welding quality and reduce the gap between the lap joint plates in the manufacturing process of the side wall as much as possible, more complex process equipment needs to be manufactured to realize the compaction of the workpiece. Therefore, the welding manufacturing process is very complex, the production period is long, and the welding stability is greatly influenced by the quality of the tool. Moreover, in the existing continuous laser welding process, local welding defects can occur in the middle area of a welding seam, so that the full-length welding seam is poor, and due to the notch effect generated by local open welding, the generated defect cracks are easy to further crack and extend to the whole welding seam area, so that the final product quality is poor, and the safety of a vehicle body is adversely affected.
Disclosure of Invention
The invention provides a side wall welding method, a welding device, a side wall, a vehicle body and a rail vehicle, which are used for solving the problem that in the prior art, a middle area of a welding seam formed by continuous laser welding is easy to have local welding defects, so that the full-length welding seam is poor.
The invention further provides a side wall welding device.
The invention further provides the side wall.
The invention also provides a vehicle body.
The invention further provides the railway vehicle.
The invention provides a side wall welding method, which comprises the following steps:
pressing the cross beam on the surface of the side wall plate;
and spot welding the cross beams at intervals by using laser beams along the length direction of the cross beams so as to weld the cross beams to the surface of the wallboard through welding spots of a plurality of spot welding.
According to the side wall welding method provided by the invention, the shape of the welding spot is in a shape of a Chinese character 'mi' or a circle.
According to the side wall welding method provided by the invention, the length of each welding bead of the welding spot in a shape like a Chinese character 'mi' is not more than 15 mm; the diameter of the circular welding spot is not more than 10 mm.
According to the side wall welding method provided by the invention, the cross beam is a cap-shaped beam, flanges are respectively symmetrically arranged on two sides of the cross beam along the length direction, and a plurality of welding points are arranged on each flange at intervals.
According to the side wall welding method provided by the invention, the welding points on the two flanges are symmetrically arranged or staggered with respect to the axis of the beam along the length direction.
According to the side wall welding method provided by the invention, the distances between the welding spots in the same row are equal.
The side wall welding method provided by the invention further comprises the following steps:
welding a plurality of cross beams on the surface of the same wallboard;
wherein the beams are arranged at intervals.
The invention also provides a side wall welding device which is used for executing the side wall welding method; the side wall welding device includes:
a laser head for emitting a laser beam to a welding surface;
a first sleeve, wherein the first end is configured as an opening end capable of being pressed on the welding surface, and the laser beam can act on the welding surface through the opening end;
the second sleeve is movably sleeved outside the second end of the first sleeve and is connected with the laser head;
and the compression spring is assembled in the second sleeve and is connected between the second end of the first sleeve and the laser head.
According to the side wall welding device provided by the invention, the first sleeve and the second sleeve are coaxially arranged, a through hole is formed in the end face, far away from the laser head, of the second sleeve, and the second end of the first sleeve is movably arranged in the through hole of the second sleeve in a penetrating mode.
According to the side wall welding device provided by the invention, the outer edge of the second end of the first sleeve is provided with the platform extending outwards, and the platform is positioned in the second sleeve.
The present invention also provides a sidewall, comprising:
a wallboard;
and the cross beams are arranged at intervals and welded on the surface of the wallboard by the side wall welding method.
The invention also provides a vehicle body which comprises the side wall.
The invention also provides a rail vehicle, which comprises the side wall; or a vehicle body as described above.
The invention provides a side wall welding method, which comprises the following steps: pressing the cross beam on the surface of the side wall plate; and spot welding the cross beam at intervals along the length direction of the cross beam by using a laser beam so as to weld the cross beam to the surface of the wallboard through a plurality of welding spots of spot welding. According to the side wall welding method, the welding and fixing of the cross beam on the wall plate are realized by utilizing laser single-side spot welding, namely, a plurality of spot welding spots formed on the cross beam replace full-length welding lines formed in the existing cross beam welding, so that the problem of local welding defects caused by the middle area of the full-length welding lines is completely avoided, and the welding quality between the cross beam and the wall plate is effectively improved on the basis of ensuring the welding strength of the cross beam.
The invention also provides a side wall welding device which is used for executing the side wall welding method. This side wall welding set includes: a laser head for emitting a laser beam to a welding surface; the first end of the first sleeve is configured as an opening end capable of being pressed on the welding surface, and the laser beam can penetrate through the opening end to act on the welding surface; the second sleeve is movably sleeved outside the second end of the first sleeve and is connected with the laser head; and the compression spring is assembled in the second sleeve and is connected between the second end of the first sleeve and the laser head. The side wall welding device can realize the compression and fixation of a workpiece to be welded in the process of implementing laser single-side spot welding, namely, the beam is compressed on the surface of the wallboard, so that the welding process difficulty and the operation difficulty of the laser single-side spot welding are reduced, the reliable compression around a welding point in the welding process of the beam is improved, and the powerful guarantee is provided for the welding quality between the beam and the wallboard.
The present invention also provides a sidewall, comprising: a wallboard; and the cross beams are arranged at intervals and welded on the surface of the wallboard by the side wall welding method. The side wall utilizes the side wall welding method to realize that the beam is welded and fixed on the surface of the wallboard by utilizing laser single-side spot welding, thereby completely avoiding the problem of local welding defects caused by the middle area of a full-length welding seam, and further effectively improving the welding quality between the beam and the wallboard on the basis of ensuring the welding strength of the beam.
The invention also provides a vehicle body which comprises the side wall. Through setting up above-mentioned side wall for this automobile body possesses all advantages of above-mentioned side wall, specifically no longer gives details here.
The invention also provides a rail vehicle, which comprises the side wall; or a vehicle body as described above. Through setting up above-mentioned side wall or above-mentioned automobile body for this rail vehicle possesses whole advantages of above-mentioned side wall at least, specifically no longer gives details here.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a side wall welding method provided by the present invention;
FIG. 2 is one of the front views of the partial position of the sidewall provided by the present invention;
FIG. 3 is a side view corresponding to a partial position of the sidewall shown in FIG. 2;
FIG. 4 is a second front view of the sidewall according to the present invention;
fig. 5 is a schematic structural diagram of a side wall welding device provided by the invention.
Reference numerals:
1: a wallboard; 2: a beam body; 3: welding spots;
4: a laser head; 5: a first sleeve; 6: a compression spring;
7: a laser beam; 8: a second sleeve; 9: and (7) welding the surfaces.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The side wall welding method, the side wall welding device, and the side wall, the car body and the rail car welded by the side wall welding method according to the present invention will be described with reference to fig. 1 to 5.
As shown in fig. 1 to 4, the present invention provides a side wall welding method, which is actually a laser single-side spot welding method, and can effectively improve the welding quality between the cross beam 2 and the wall panel 1 on the basis of ensuring the welding strength of the cross beam 2.
Specifically, as shown in fig. 1, the side wall welding method includes:
s1, pressing the beam 2 on the surface of the side wall plate 1;
and S2, spot welding the cross beam 2 at intervals along the length direction of the cross beam 2 by using the laser beam 7 so as to weld the cross beam 2 to the surface of the wall panel 1 through a plurality of spot welding spots 3.
Therefore, the side wall welding method utilizes laser single-side spot welding to realize the welding and fixing of the cross beam 2 on the wall plate 1, namely, a plurality of spot welding spots 3 formed on the cross beam 2 replace the full-length welding line formed in the existing welding of the cross beam 2, so that the problem of local welding defects caused by the middle area of the full-length welding line is completely avoided.
Preferably, in the side wall welding method, the cross beam 2 is subjected to laser single-side spot welding by using the side wall welding device, and the periphery of the welding spot 3 is compressed and fixed by using the side wall welding device in the spot welding process, so that the welding quality and the welding strength are improved.
It can be understood that the distribution of the welding spots on the cross beam 2 after the welding is completed is shown in fig. 2 or fig. 4. The shape of the welding spot 3 is preferably a Chinese character 'mi' or a circle. The welding strength of the laser single-side spot welding can be improved by the aid of the welding spots 3 in the shape of the Chinese character mi and the circular welding spots 3, reliable fixation between the cross beam 2 and the wallboard 1 is guaranteed, and the situation of local welding opening is effectively avoided.
Wherein, the forming process of each circular welding point 3 comprises the following steps:
determining the central position of a welding spot 3 on the beam 2;
the laser beam 7 is used for making uniform circular motion on the surface of the wall plate 1 to form a circular welding spot 3, and the center of the circular welding spot 3 is the center of the welding spot 3.
The forming process of the welding spot 3 in the shape of the Chinese character mi comprises the following steps:
determining the central position of a welding spot 3 on the beam 2;
and drawing a plurality of welding passes on the surface of the wallboard 1 by using a laser beam 7, wherein each welding pass is intersected at the central position of the welding point 3, and each welding pass takes the central position of the welding point 3 as a middle point.
Understandably, the length of each welding bead of the welding spot 3 in the shape of a Chinese character 'mi' is preferably not more than 15 mm; preferably the diameter of the circular spot welds 3 does not exceed 10 mm.
In some embodiments, as shown in fig. 3, the cross beam 2 welded to the wall panel 1 of the side wall is preferably a hat-shaped beam, that is, two sides of the cross beam 2 along the length direction are symmetrically provided with flanges respectively. In order to improve the plate-beam connection strength between the cross beam 2 and the wall plate 1, a plurality of welding points 3 are preferably arranged on each flanging at intervals. Wherein, each welding point 3 on the two flanges is symmetrically arranged or arranged in a staggered way along the axial line of the length direction relative to the beam 2. The symmetrically arranged welding point 3 distribution structure can better improve the shearing resistance of plate-beam connection. In order to ensure that the welding stress between the whole cross beam 2 and the wall plate 1 is uniformly distributed, the intervals of the welding points 3 in the same row are preferably equal.
In some embodiments, as shown in fig. 2 to 4, the side wall welding method further includes: a plurality of cross beams 2 are welded on the surface of the same wall plate 1. Wherein the cross beams 2 are arranged at intervals. The position of the beam 2 on the wallboard 1 is locally reinforced, and the reliability of plate-beam connection is further improved.
It will be appreciated that the material of wall panel 1 according to the embodiment of the present invention is preferably EN1.4317-2G wire drawing stainless steel material, and preferably the thickness of wall panel 1 is at least 2 mm. The beam 2 is preferably made of SUS301L-ST stainless steel, and the thickness of the beam 2 is preferably at least 0.8 mm. Preferably, the main structure of wall panel 1 is an angular cross-sectional structure.
The sidewall welding device provided by the present invention is described below, and the sidewall welding device described below and the sidewall welding method described above may be referred to in correspondence with each other.
As shown in fig. 5, the sidewall welding apparatus is used to perform the above-mentioned sidewall welding method. The side wall welding device comprises a laser head 4, a first sleeve 5, a second sleeve 8 and a compression spring 6. The laser head 4 is used to emit a laser beam 7 towards the welding surface 9. The first sleeve 5 and the second sleeve 8 are respectively configured into a hollow tubular structure. The first end of the first sleeve 5 is configured as an open end that can be pressed against the welding surface 9; the second end of the first sleeve 5 is arranged towards the laser head 4 so that the laser beam 7 can act on the welding surface 9 through the open end. The second sleeve 8 is movably sleeved outside the second end of the first sleeve 5 and is connected with the laser head 4. The compression spring 6 is fitted in the second sleeve 8 and is connected between the second end of the first sleeve 5 and the laser head 4.
The side wall welding device can realize the compressing and fixing of a workpiece to be welded in the process of implementing laser single-side spot welding, namely, the beam 2 is compressed on the surface of the wallboard 1, and the side wall welding device synchronously provides pressing force in the process of implementing laser single-side spot welding so as to ensure the reliable control of the gap between the plate and the beam. In addition, the welding process difficulty and the operation difficulty of laser single-side spot welding are effectively reduced, and the reliable compression of the periphery of the welding point 3 in the welding process of the cross beam 2 is improved, so that powerful guarantee is provided for the welding quality between the cross beam 2 and the wallboard 1.
Specifically, in the side wall welding process, the side wall welding device is pressed at the position of a preset welding point 3 of a cross beam 2 and is pressed towards the cross beam 2, so that a laser head 4 pushes a second sleeve 8 to move towards the cross beam 2, and a compression spring 6 is pressed through the laser head 4 in the moving process of the second sleeve 8, so that a compression force is applied to a first sleeve 5, the open end of the first sleeve 5 is compressed on the surface of a wallboard 1, and the reliable compression and fixation of the area around a laser beam 7 in the welding process is realized.
It should be noted that the welding surface 9 in the embodiment of the present invention refers to the surface to be welded of the cross beam 2 in the above-mentioned side wall welding method, for example, the flanged surface of the cross beam 2.
In order to ensure that the open end of the first sleeve 5 can apply vertical pressing force to the welding surface 9 and ensure the uniformity of the applied force and the coaxiality with the laser beam 7, the first sleeve 5 and the second sleeve 8 are preferably coaxially arranged, a through hole is formed in the end face, away from the laser head 4, of the second sleeve 8, and the second end of the first sleeve 5 is movably arranged in the through hole of the second sleeve 8 in a penetrating mode.
In order to avoid that the first sleeve 5 and the second sleeve 8 fall out during the relative movement, it is preferred that the second end of the first sleeve 5 is provided with an outwardly extending platform at its outer edge, which platform is located in the second sleeve. Because this platform can be blockked inside the through-hole of second sleeve 8 to improve operational safety and structural stability, effectively improve welding quality.
In order to simplify the structure and further improve the structural stability, it is preferable that the first sleeve 5 and the second sleeve 8 are each configured as a cone structure having a continuous smooth transition, and the end surface facing the laser head 4 is larger than the end surface facing the welding surface 9, that is, the diameter of the end surface closer to the laser head 4 is larger, and the diameter of the end surface closer to the welding surface 9 is smaller. The structure is arranged so that during the movement of the second sleeve 8 towards the welding surface 9, the end part of the first sleeve 5 provided with the platform can move freely in the second sleeve 8; on the contrary, during the process that the second sleeve 8 moves in the direction away from the welding surface 9, the platform is limited and blocked by the side wall of the second sleeve 8 at the position close to the through hole of the second sleeve 8 enough, so that the movement of the second sleeve 8 is stopped.
The sidewall, the car body and the rail car provided by the invention are respectively described below. The sidewall described below is welded by using the sidewall welding method and the sidewall welding device described above.
As shown in fig. 2 to 4, the sidewall provided by the present invention includes a wall panel 1 and a plurality of cross members 2. A plurality of cross beams 2 are arranged at intervals and welded to the surface of the wall panel 1 by the side wall welding method as described above. According to the side wall, the cross beam 2 is welded and fixed on the surface of the wallboard 1 by the aid of the side wall welding method through laser single-side spot welding, so that the problem of local welding defects caused by the middle area of a full-length welding seam is completely solved, and the welding quality between the cross beam 2 and the wallboard 1 is effectively improved on the basis of ensuring the welding strength of the cross beam 2.
The invention also provides a vehicle body which comprises the side wall. Through setting up above-mentioned side wall for this automobile body possesses all advantages of above-mentioned side wall, specifically no longer gives details here.
The invention also provides a rail vehicle, which comprises the side wall; or a vehicle body as described above. Through setting up above-mentioned side wall or above-mentioned automobile body for this rail vehicle possesses whole advantages of above-mentioned side wall at least, specifically no longer gives details here.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (13)
1. A side wall welding method is characterized by comprising the following steps:
pressing the cross beam on the surface of the side wall plate;
and spot welding the cross beams at intervals by using laser beams along the length direction of the cross beams so as to weld the cross beams to the surface of the wallboard through welding spots of a plurality of spot welding.
2. The side wall welding method of claim 1, wherein the shape of the welding spot is a shape of a Chinese character 'mi' or a circle.
3. The side wall welding method according to claim 2, wherein the length of each welding bead of the welding point in the shape of a Chinese character 'mi' is not more than 15 mm; the diameter of the circular welding spot is not more than 10 mm.
4. The side wall welding method according to claim 1, wherein the cross beam is a hat-shaped beam, flanges are symmetrically arranged on two sides of the cross beam in the length direction, and a plurality of welding points are arranged on each flange at intervals.
5. The side wall welding method according to claim 4, wherein the welding points on the two flanges are symmetrically arranged or staggered with respect to the axis of the cross beam in the length direction.
6. The method for welding the side wall according to claim 4, wherein the intervals between the welding spots in the same row are equal.
7. The side wall welding method according to any one of claims 1 to 6, further comprising:
welding a plurality of cross beams on the surface of the same wallboard;
wherein the beams are arranged at intervals.
8. A side wall welding apparatus for performing the side wall welding method according to any one of claims 1 to 7; the side wall welding device includes:
a laser head for emitting a laser beam to a welding surface;
a first sleeve, wherein the first end is configured as an opening end capable of being pressed on the welding surface, and the laser beam can act on the welding surface through the opening end;
the second sleeve is movably sleeved outside the second end of the first sleeve and is connected with the laser head;
and the compression spring is assembled in the second sleeve and is connected between the second end of the first sleeve and the laser head.
9. The side wall welding device of claim 8, wherein the first sleeve and the second sleeve are coaxially arranged, a through hole is formed in an end face, away from the laser head, of the second sleeve, and a second end of the first sleeve is movably arranged in the through hole of the second sleeve in a penetrating mode.
10. The side wall welding apparatus of claim 8, wherein the second end of the first sleeve is provided with an outwardly extending platform at an outer edge thereof, the platform being located in the second sleeve.
11. A sidewall, comprising:
a wallboard;
a plurality of cross members spaced apart and welded to the surface of the wall panel by the side wall welding method as claimed in any one of claims 1 to 7.
12. A vehicle body comprising the sidewall of claim 11.
13. A rail vehicle, characterized by comprising the side wall of claim 11; or a vehicle body as claimed in claim 12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110313657.3A CN113199146A (en) | 2021-03-24 | 2021-03-24 | Side wall welding method and device, side wall, vehicle body and rail vehicle |
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| CN202110313657.3A CN113199146A (en) | 2021-03-24 | 2021-03-24 | Side wall welding method and device, side wall, vehicle body and rail vehicle |
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