CN111761291A - 360 rotatory welding position frock of bottom end rail distortion anti-deformation - Google Patents
360 rotatory welding position frock of bottom end rail distortion anti-deformation Download PDFInfo
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- CN111761291A CN111761291A CN202010773240.0A CN202010773240A CN111761291A CN 111761291 A CN111761291 A CN 111761291A CN 202010773240 A CN202010773240 A CN 202010773240A CN 111761291 A CN111761291 A CN 111761291A
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- cross beam
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a 360-degree rotary welding positioning tool for distortion and reversible deformation of a lower cross beam, which comprises a support upright post, a rotary table and a gantry mechanism, wherein the support upright post is arranged on the support upright post; the rotating table is provided with welding stations corresponding to the lower cross beam, is arranged on the two supporting stand columns, and is provided with a servo motor for driving the rotating table to rotate; the gantry mechanisms are arranged on the rotating table, and the welding station is positioned below the gantry mechanisms; a jack is arranged on the gantry mechanism and used for pressing the lower cross beam; and a fixing hole corresponding to the lower cross beam is formed in the welding station, a rear cover plate of the lower cross beam penetrates through the fixing hole to the other side of the rotating table, and a reversible deformation prefabricating mechanism is arranged on the side of the rotating table. According to the 360-degree rotary welding positioning tool for the lower cross beam, the tool rotates to facilitate welding of the upper, lower, front, rear, left and right welding seams of the lower cross beam; the anti-deformation prefabricating mechanism can perform the anti-deformation of materials, offset the deformation generated after welding and reduce unnecessary adjustment and repair.
Description
Technical Field
The invention belongs to the field of railway vehicles, and particularly relates to a 360-degree rotary welding positioning tool for distortion and reversible deformation of a lower cross beam.
Background
The lower cross beam of the end wall of the vehicle body is a foundation of the whole end wall structure and is used for connecting the underframe and the side wall in the vehicle body composition stage of the rail vehicle, so the size, the flatness and the torsion degree of the lower cross beam of the end wall directly influence the correctness of the end wall structure and the whole vehicle body structure. In conclusion, the guarantee of the accuracy of the size, the flatness and the torsion resistance of the end wall lower beam is one of the key links in the manufacturing process of the vehicle body.
But the lower beam assembled and welded by using the traditional lower beam assembling and welding tool has the following defects:
1. after the assembly welding of the lower cross beam is finished, the size exceeds the tolerance requirement specified in the drawing;
2. after the lower cross beam is assembled and welded, the flatness of the lower cross beam can reach a qualified state only after long-time flame adjustment and repair are carried out on the partial lower cross beam;
3. the plate thickness of the lower beam is more than 10mm, the box body structure formed after assembly welding is seriously distorted and deformed, and the torsion resistance is difficult to adjust;
4. all there is the welding seam around the bottom end rail is controlled from top to bottom, and whole box needs a plurality of frocks just can accomplish welding operation, and working strength is big, and is efficient.
Disclosure of Invention
In view of the above, the invention aims to overcome the defects in the prior art, and provides a 360-degree rotary welding positioning tool for lower beam distortion reversible deformation, which is used for solving the defects of difficult positioning, serious size deformation after welding, poor flatness, serious box distortion deformation and high labor intensity when a common lower beam welding tool is used for welding.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the 360-degree rotary welding positioning tool for the lower cross beam distortion reversible deformation comprises a support upright post, a rotary table and a gantry mechanism;
the rotating table is provided with welding stations corresponding to the lower cross beam, is arranged on the two supporting stand columns, and is provided with a servo motor for driving the rotating table to rotate;
the gantry mechanisms are arranged on the rotating table, and the welding station is positioned below the gantry mechanisms; a jack is arranged on the gantry mechanism and used for pressing the lower cross beam;
and a fixing hole corresponding to the lower cross beam is formed in the welding station, a rear cover plate of the lower cross beam penetrates through the fixing hole to the other side of the rotating table, and a reversible deformation prefabricating mechanism is arranged on the side of the rotating table.
Furthermore, the bottom of the rotating platform is of a groove-shaped structure, and the anti-deformation prefabricating mechanism is installed on the groove wall of the rotating platform.
Further, the anti-deformation prefabricating mechanism comprises a jackscrew seat, a jackscrew and an arched pull rod;
the bow-shaped pull rod is provided with a limiting hole corresponding to a rear cover plate of the lower cross beam, and two ends of the bow-shaped pull rod are provided with fixing grooves corresponding to the outer diameters of the end parts of the jackscrews;
the jackscrew seat is fixed on the cell wall of rotary platform, jackscrew and jackscrew seat threaded connection, and the tip is arranged in the fixed slot.
Furthermore, after the arch-shaped pull rod is fixed, the distance between the arch-shaped pull rod and the groove wall of the rotating platform is smaller than the depth of the fixing groove.
Furthermore, the number of the gantry mechanisms is more than three.
Further, the gantry mechanism comprises a fixed beam type gantry and a movable column type gantry; the fixed beam type gantry is arranged at two ends of the welding station and fixedly connected with the rotating platform; the movable column type gantries are arranged between the two fixed beam type gantries and can move from one side of the fixed beam type gantries to the other side along the rotating platform.
Furthermore, a cross beam at the top of the fixed beam type gantry is detachably connected with a gantry upright column corresponding to the cross beam; the top of the gantry upright post is connected with the cross beam through a bayonet lock; the end part of the gantry upright post of the movable column type gantry is provided with a sliding assembly which is connected with the rotating platform in a sliding manner.
Furthermore, the rotating table is also provided with a plurality of jacking mechanisms for fixing the lower cross beam;
the jacking mechanism comprises a screw rod seat and a jacking screw rod; the screw rod seat is fixed on the rotating platform, and the jacking screw rod is in threaded connection with the screw rod seat and is used for jacking and fixing the lower cross beam;
the end part of the jacking lead screw is of a ball head structure.
Furthermore, a threaded hole corresponding to the jacking screw rod is further formed in the gantry upright post of the fixed beam type gantry, and the jacking screw rod is arranged in the fixed beam type gantry and used for jacking and fixing the lower cross beam.
Furthermore, a plurality of clamping mechanisms are arranged in the groove-shaped structure at the bottom of the rotating platform; the clamping mechanism comprises a fixed seat, an arched clamping plate and a screw rod;
the fixed seat is fixed in a groove-shaped structure at the bottom of the rotating platform; the arched clamping plate is provided with a through hole, the screw penetrates through the through hole and is fixed on the fixed seat, the screw is provided with a nut, the nut acts on the arched clamping plate, and the arched clamping plate clamps the rear cover plate of the lower cross beam on the fixed seat.
Compared with the prior art, the invention has the following advantages:
1. the size of the welding seam gap can be adjusted by tightly pushing the feed amount of the screw rod, so that the problem of size shrinkage after welding can be solved smoothly;
2. the head of the jacking lead screw is connected with a ball head to ensure 100% surface-to-surface contact with the workpiece, and the jacking is reliable;
3. the tool can rotate 360 degrees, so that welding seams of the lower cross beam in the vertical direction, the front direction, the rear direction and the left direction can be welded conveniently;
4. the lower part of the lower cross beam can be used for prefabricating the reverse deformation of materials through a reverse deformation prefabricating mechanism, so that the deformation generated after welding is counteracted, and unnecessary adjustment and repair are reduced;
5. adjusting the reversible deformation and the distortion deformation of welding materials by four gantry mechanisms on the upper part of the tool before welding the lower cross beam;
6. the three to four gantry mechanisms are used simultaneously to adjust the distortion of the box body, so that the problem that the distortion is transferred to the other end after one end of the common box body adjusting and repairing tool is adjusted and repaired is solved;
7. the upper parts of the gantry mechanisms on the two sides are designed in a detachable mode, and the two gantry mechanisms in the middle can freely move left and right on the tool. After the gantry upper mechanisms on the two sides are disassembled, the two middle gantries can move to the two ends of the tool, so that workpieces can be conveniently installed and lifted.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a 360-degree rotating welding positioning tool for distortion and reversible deformation of a lower cross beam according to an embodiment of the invention;
fig. 2 is a second schematic view of a 360-degree rotation welding positioning tool for distortion and reversible deformation of a lower cross beam according to an embodiment of the invention;
fig. 3 is a schematic diagram of a reversible deformation prefabricating mechanism according to an embodiment of the invention;
FIG. 4 is a schematic view of an arcuate tie bar according to an embodiment of the present invention;
FIG. 5 is a schematic view of a clamping mechanism according to an embodiment of the present invention;
fig. 6 is a schematic view of a tightening mechanism according to an embodiment of the present invention.
Description of reference numerals:
1. supporting the upright post; 2. a servo motor; 3. a rotating table; 4. a jacking mechanism; 5. a jack; 6. a gantry mechanism; 7. a chucking mechanism; 8. a reversible deformation prefabricating mechanism; 9. a jackscrew seat; 10. an arcuate tie bar; 11. an arched snap-gauge; 12. carrying out top thread; 13. a screw; 14. a fixed seat; 15. a nut; 16. a lead screw seat; 17. tightly pushing the screw rod; 18. a ball head structure; 19. a lower cross beam; 101. fixing grooves; 601. fixing a beam type gantry; 602. moving column type gantry.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "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 used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-2, the lower beam 19 is a 360-degree rotary welding positioning tool with distortion and reversible deformation, and comprises a support upright 1, a rotary table 3 and a gantry mechanism 6; the rotary table 3 is provided with welding stations corresponding to the lower cross beam 19, the rotary table 3 is arranged on the two support upright posts 1, and the support upright posts 1 are provided with servo motors 2 for driving the rotary table 3 to rotate; the gantry mechanisms 6 are arranged on the rotating table 3, and the welding station is positioned below the gantry mechanisms 6; a jack 5 is arranged on the gantry mechanism 6 and used for pressing the lower cross beam 19; and a fixing hole corresponding to the lower cross beam 19 is formed in the welding station, a rear cover plate of the lower cross beam 19 penetrates through the fixing hole to the other side of the rotating platform 3, and a reversible deformation prefabricating mechanism 8 is arranged on the side of the rotating platform 3.
The bottom of the rotating platform 3 is of a groove-shaped structure, and the anti-deformation prefabricating mechanism 8 is installed on the groove wall of the rotating platform. As shown in fig. 3-4, the reverse deformation prefabricating mechanism 8 comprises a jackscrew seat 9, a jackscrew 12 and an arch pull rod 10; the bow-shaped pull rod 10 is provided with a limiting hole corresponding to the rear cover plate of the lower cross beam 19, and two ends of the bow-shaped pull rod are provided with fixing grooves 101 corresponding to the outer diameters of the end parts of the jackscrews; the jackscrew seat 9 is fixed on the groove wall of the rotary platform, the jackscrew 12 is in threaded connection with the jackscrew seat 9, and the end part is arranged in the fixing groove 101.
After the bow-shaped pull rod 10 is fixed, the distance between the bow-shaped pull rod 10 and the groove wall of the rotating platform is smaller than the depth of the fixing groove 101.
As shown in fig. 1, the gantry mechanism 6 includes a fixed beam gantry 601 and a movable column gantry 602; the fixed beam type gantry 601 is arranged at two ends of a welding station, and the fixed beam type gantry 601 is fixedly connected with a rotating platform; the movable column type gantries 602 are arranged between the two fixed beam type gantries 601, and the movable column type gantries 602 can move from one side of the fixed beam type gantries 601 to the other side along the rotating platform.
The cross beam at the top of the fixed beam type gantry 601 is detachably connected with the corresponding gantry upright post; the top of the gantry upright post is connected with the cross beam through a bayonet lock; the end part of the gantry column of the movable column type gantry 602 is provided with a sliding assembly which is connected with the rotating platform in a sliding way.
As shown in fig. 6, the rotating table 3 is further provided with a plurality of tightening mechanisms 4 for fixing the lower beam 19; the jacking mechanism 4 comprises a screw rod seat 16 and a jacking screw rod 17; the screw rod seat 16 is fixed on the rotating platform 3, and the jacking screw rod 17 is in threaded connection with the screw rod seat 16 and is used for jacking and fixing the lower cross beam 19; the end part of the jacking screw rod 17 is of a ball head structure 18.
The gantry column of the fixed beam type gantry 601 is also provided with a threaded hole corresponding to the jacking lead screw 17, and the jacking lead screw 17 is arranged in the fixed beam type gantry 601 and used for jacking and fixing the lower cross beam 19.
As shown in fig. 5, a plurality of clamping mechanisms 7 are further arranged in the groove-shaped structure at the bottom of the rotating platform 3; the clamping mechanism 7 comprises a fixed seat 14, an arched clamping plate 11 and a screw rod 13; the fixed seat 14 is fixed in a groove-shaped structure at the bottom of the rotating platform 3; the arched clamping plate 11 is provided with a through hole, the screw 13 penetrates through the through hole and is fixed on the fixed seat 14, the screw 13 is provided with a nut 15, the nut 15 acts on the arched clamping plate 11, and the arched clamping plate 11 clamps the rear cover plate of the lower cross beam 19 on the fixed seat 14.
1. The size of the welding seam gap is adjusted through the size of the feeding amount of the jacking mechanism 4 and the adjusting shim.
2. The jacking mechanism 4 is provided with a ball head, and the structure of the jacking mechanism realizes 100% surface-to-surface contact with the surface of the workpiece.
3. The 360-degree rotation of the tool is realized by controlling the servo motor 2 through a control panel.
4. The prefabricated reversible deformation of the lower cross beam lower structure is realized by a jackscrew of a prefabricated reversible deformation structure 8 and a 7-clamping mechanism. The jackscrew of the prefabricated reversible deformation structure 8 acts on the jackscrew seat 9, the arched pull rod 10 is sleeved on a lower beam rear cover plate (25mm plate), and the jackscrew controls the stroke of the arched pull rod 10 through the feeding amount, so that the reversible deformation amount is adjusted. The screw rod of the clamping mechanism 7 is fixed on the overturning platform, the screw rod is provided with a nut, the nut acts on the arched clamping plate 11, the arched clamping plate 11 acts on the lower cross beam rear cover plate (10mm plate), the clamping force of the arched clamping plate is adjusted by rotating the nut, and then the size of the reversible deformation amount of the lower cross beam rear cover plate is adjusted.
5. The reversible deformation and the torsional deformation of the upper part of the lower cross beam are realized by combining the jack 5 and the gantry mechanism 6 with an adjusting gasket. Adjusting gaskets with proper thickness are added on the surface position of the center of the overturning platform at the upper part of the lower cross beam, the jacks act on the four gantries, and the anti-deformation amount and the distortion deformation amount of the lower cross beam are adjusted by adjusting the pressing force of each jack.
6. Four longmen mechanisms all can transversely freely slide, and the longmen upper portion of two tip can be dismantled, and two longmen in the middle of the back that the upper portion was dismantled finishes can slide to both sides, and the bottom end rail can be hung out the frock smoothly this moment. The number of the gantry mechanisms is more than three, and reversible deformation and torsional deformation are simultaneously controlled through combination of the gantry mechanisms.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. 360 rotatory welding position frock of bottom end rail distortion anti-deformation, its characterized in that: comprises a supporting upright post (1), a rotating platform (3) and a gantry mechanism (6);
the rotary table (3) is provided with a welding station corresponding to the lower cross beam (19), the rotary table (3) is arranged on two support upright posts (1), and the support upright posts (1) are provided with servo motors (2) for driving the rotary table (3) to rotate;
the gantry mechanisms (6) are arranged on the rotating table (3), and the welding station is positioned below the gantry mechanisms (6); a jack (5) is arranged on the gantry mechanism (6) and is used for pressing the lower beam (19) to prevent the box body from being distorted and deformed;
and a fixing hole corresponding to the lower cross beam (19) is formed in the welding station, a rear cover plate of the lower cross beam (19) penetrates through the fixing hole to the other side of the rotating platform (3), and an anti-deformation prefabricating mechanism (8) is arranged on the side of the rotating platform (3).
2. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 1, is characterized in that: the number of the gantry mechanisms (6) is more than three.
3. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 1, is characterized in that: the gantry mechanism (6) comprises a fixed beam gantry (601) and a movable column gantry (602); the fixed beam type gantries (601) are arranged at two ends of the welding station, and the fixed beam type gantries (601) are fixedly connected with the rotating platform; the movable column type gantries (602) are arranged between the two fixed beam type gantries (601), and the movable column type gantries (602) can move from one side to the other side of the fixed beam type gantries (601) along the rotating platform.
4. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 3, wherein the tool comprises: the cross beam at the top of the fixed beam type gantry (601) is detachably connected with the corresponding gantry upright post; the top of the gantry upright post is connected with the cross beam through a bayonet lock; the end part of a gantry upright post of the movable column type gantry (602) is provided with a sliding assembly which is connected with the rotating platform in a sliding way.
5. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 3, wherein the tool comprises: the rotating table (3) is also provided with a plurality of jacking mechanisms (4) for fixing the lower cross beam (19);
the jacking mechanism (4) comprises a screw rod seat (16) and a jacking screw rod (17); the screw rod seat (16) is fixed on the rotating platform (3), and the tightly-jacking screw rod (17) is in threaded connection with the screw rod seat (16) and is used for tightly jacking and fixing the lower cross beam (19);
the end part of the jacking lead screw (17) is of a ball head structure (18).
6. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 5, wherein the tool comprises: and a threaded hole corresponding to the jacking lead screw (17) is further formed in the gantry upright post of the fixed beam type gantry (601), and the jacking lead screw (17) is arranged in the fixed beam type gantry and is used for jacking and fixing the lower cross beam (19).
7. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 1, is characterized in that: the bottom of the rotating platform (3) is of a groove-shaped structure, and the anti-deformation prefabricating mechanism (8) is installed on the groove wall of the rotating platform.
8. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 7, is characterized in that: the anti-deformation prefabricating mechanism (8) comprises a jackscrew seat (9), a jackscrew (12) and an arched pull rod (10);
a limiting hole corresponding to a rear cover plate of the lower cross beam (19) is formed in the arch-shaped pull rod (10), and fixing grooves (101) corresponding to the outer diameters of the end portions of the jackscrews (12) are formed in the two ends of the arch-shaped pull rod;
the jackscrew seat (9) is fixed on the groove wall of the rotary platform, the jackscrew (12) is in threaded connection with the jackscrew seat (9), and the end part of the jackscrew is arranged in the fixing groove (101).
9. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam according to claim 8, is characterized in that: after the arched pull rod (10) is fixed, the distance between the arched pull rod (10) and the groove wall of the rotating platform is smaller than the depth of the fixing groove (101).
10. The 360-degree rotary welding positioning tool for the distortion and reverse deformation of the lower cross beam as claimed in claim 7, is characterized in that: a plurality of clamping mechanisms (7) are arranged in the groove-shaped structure at the bottom of the rotating table (3); the clamping mechanism (7) comprises a fixed seat (14), an arched clamping plate (11) and a screw (13);
the fixed seat (14) is fixed in a groove-shaped structure at the bottom of the rotating platform (3); the novel fixing device is characterized in that a through hole is formed in the arched clamping plate (11), the screw rod (13) penetrates through the through hole and is fixed on the fixing seat (14), a nut (15) is arranged on the screw rod (13), the nut (15) acts on the arched clamping plate (11), and the arched clamping plate (11) clamps the rear cover plate of the lower cross beam (19) on the fixing seat (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773240.0A CN111761291A (en) | 2020-08-04 | 2020-08-04 | 360 rotatory welding position frock of bottom end rail distortion anti-deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010773240.0A CN111761291A (en) | 2020-08-04 | 2020-08-04 | 360 rotatory welding position frock of bottom end rail distortion anti-deformation |
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| Publication Number | Publication Date |
|---|---|
| CN111761291A true CN111761291A (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010773240.0A Pending CN111761291A (en) | 2020-08-04 | 2020-08-04 | 360 rotatory welding position frock of bottom end rail distortion anti-deformation |
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| CN (1) | CN111761291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909745A (en) * | 2021-10-25 | 2022-01-11 | 中车青岛四方机车车辆股份有限公司 | Welding deformation regulating device and method for box-type structure |
-
2020
- 2020-08-04 CN CN202010773240.0A patent/CN111761291A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909745A (en) * | 2021-10-25 | 2022-01-11 | 中车青岛四方机车车辆股份有限公司 | Welding deformation regulating device and method for box-type structure |
| CN113909745B (en) * | 2021-10-25 | 2022-10-25 | 中车青岛四方机车车辆股份有限公司 | Welding deformation regulating and controlling device and method for box-type structure |
| WO2023070942A1 (en) * | 2021-10-25 | 2023-05-04 | 中车青岛四方机车车辆股份有限公司 | Apparatus for regulating welding distortion of box structure and regulation method |
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