A bridge plate anti-deformation welding device

Abstract

The present invention relates to the technical field of plate welding, and proposes a bridge plate anti-deformation welding device, a bridge plate anti-deformation welding device, used for welding U-ribbed plates of bridges, a gantry rotatably arranged, the rotation axis is in the horizontal direction, the gantry has a plurality of raised parts, the raised parts are arc-shaped, the middle part is higher than the two ends, the plurality of raised parts are parallel to each other and arranged at intervals, and are used to support the U-ribbed plates; a pressing piece is movably arranged, arranged on both sides of the gantry, and located at both ends of the extension direction of the raised parts, and the pressing piece is used to press the side of the U-ribbed plate after moving. Through the above technical scheme, the deformation generated during the welding process of the U-ribbed parts is effectively reduced, which further affects the forming quality, assembly accuracy, load-bearing capacity and safety issues.

Description

Technical Field

[0001] The present invention relates to the technical field of plate welding, and in particular to an anti-deformation welding device for bridge plates. Background Art

[0002] In bridge structures, U-ribs (U-shaped ribs) are key components for enhancing the strength and stiffness of beams and are widely used in steel bridges or composite bridge structures. The design of these U-shaped components not only improves the bending resistance of the beam, but also provides local stability. However, during the welding process of U-ribs, the arc or other heat source will generate high temperatures, causing the metal to melt locally and re-solidify. This temperature change will cause the material to expand and contract, especially in the heat-affected zone. Due to uneven heating and different cooling rates, different parts of the material will experience different degrees of deformation, resulting in local deformation. And when welding, the parts of the main body of the bridge plate are constrained to each other, limiting their ability to expand or contract freely with temperature changes, which will generate residual stress after welding, causing local deformation.

[0003] Local deformation will change the actual size of the U-rib and make it deviate from the design specifications. This not only affects the assembly accuracy, but may also require additional correction processes to restore the original shape, increasing manufacturing costs and time. Deformation may lead to the formation of stress concentration points, especially at welds. These high-stress areas are prone to become the starting points of fatigue cracks, reducing the long-term load-bearing capacity and structural safety of the U-rib. Summary of the invention

[0004] The present invention proposes a bridge plate deformation prevention welding device, which effectively reduces the deformation generated during the welding process of the U-rib, further affecting the forming quality, assembly accuracy, load-bearing capacity and safety issues.

[0005] The technical solution of the present invention is as follows: A bridge plate anti-deformation welding device, used for welding U-rib plate members of bridges, comprising: A stand, wherein the stand is rotatably arranged, and the rotation axis is in the horizontal direction. The stand has a plurality of raised portions, and the raised portions are arc-shaped, and the middle portion is higher than the two ends. The plurality of raised portions are parallel to each other and arranged at intervals, and are used to carry the U-rib plate member; A pressing piece is movably arranged and disposed on both sides of the platform and located at both ends of the extending direction of the protruding portion. After the pressing piece moves, it is used to press the side of the U-rib plate.

[0006] Optionally, the U-rib plate member has a rib portion, wherein the rib portion comprises a crown portion, two web portions, a root portion and a bottom portion; A main frame and a main roller, wherein the main roller is rotatably arranged on the main frame and is used for rolling contact with the crown or the bottom; The side frame body and the side rollers have at least two groups, which are respectively located on both sides of the main frame body. The side rollers are rotatably arranged on the side frame body, and the two side rollers are respectively used to roll and abut against the inner side or the outer side of the two web parts; A connecting frame, on which the main frame body and the side frame body are both arranged; A welding piece is arranged on the connecting frame and is used for welding the inner side of the root or the outer side of the root.

[0007] Optionally, the main frame is rotatably arranged on the connecting frame, and its rotation axis is perpendicular to the ground; and further comprising: The rod is cylindrical, one end of which is swingably set on the connecting frame, and its swing axis is in the horizontal direction. The side frame body is rotatably set on the other end of the rod and is set on the connecting frame through the rod. The rotating axis of the side frame body is parallel to the axis of the rod.

[0008] Optionally, the side frame body comprises: A rotating sleeve, the rotating sleeve is rotatably disposed on the rod, and a rotating shaft thereof is parallel to an axis of the rod; The frame is rotatably arranged on the rotating sleeve, and its rotating shaft is perpendicular to the rotating shaft of the rotating sleeve. The side roller is rotatably arranged on the frame.

[0009] Optionally, the frame includes: A first frame, wherein the first frame and the rotating sleeve are rotatably arranged; A second frame, the side roller is rotatably arranged on the second frame, the first frame is movably arranged on the second frame, and the first frame moves closer to or farther from the side roller; An elastic telescopic member, one end of which is arranged on the first frame, and the other end of which is arranged on the second frame, for providing elastic force for the first frame to move away from the side roller.

[0010] Optionally, the first frame includes: A first connecting block, the first connecting block and the rotating sleeve are rotatably arranged; The first connecting block is movably arranged on the second connecting block, so that the first frame is a telescopic structure, the second connecting block is movably arranged on the second frame, and one end of the elastic telescopic member is arranged on the second connecting block.

[0011] Optionally, the main frame has a guide hole and further comprises: A guide plate is arranged inside the rib or above the rib and passes through the guide hole.

[0012] Optionally, the stand has a semicircular table portion and further comprises: A wheel platform, wherein the semicircular platform portion is rotatably arranged on the wheel platform.

[0013] Optionally, the stand further comprises a support frame portion, and the pressing piece is threadedly connected to the support frame portion.

[0014] Optionally, the rod is a telescopic structure.

[0015] The working principle and beneficial effects of the present invention are: In the present invention, multiple arc-shaped protrusions on the stand provide uniform support points, ensuring that the U-rib plate can be effectively supported over the entire length, so that the thermal stress generated during the welding process can be more evenly distributed on the U-rib plate, reducing irregular deformation caused by insufficient local support. When welding heat is input, the higher design of the middle part of the protrusion can help disperse the expansion and contraction forces caused by the heat to both ends, avoiding stress concentration at a certain point or a certain area, thereby reducing the possibility of local deformation. The rotating setting of the stand allows the operator to approach the welding area from different angles and optimize the welding path. By adjusting the angle of the stand, the U-rib can be tilted, and appropriate tilting can use gravity to counteract the welding contraction force. The main function of the pressing piece is to apply a certain pre-pressure to the side of the U-rib plate before and during welding, which helps to provide additional restraint during welding and prevent lateral expansion or longitudinal bending caused by thermal expansion. The U-rib plate maintains a relatively stable position throughout the welding process, reducing weld defects caused by slight vibration or other external interference. A stable welding environment helps to improve the quality of the weld and reduce the occurrence of common problems such as unfusion and pores. The pre-stress provided by the pressing piece and the uniform support of the stand work together to make the residual stress generated during welding more balanced, reduce the probability of stress concentration points, and enhance the fatigue resistance of the weld and its adjacent areas. The rotatable nature of the stand and the mobility of the pressing piece give the device greater flexibility, allowing operators to flexibly adjust the equipment according to specific welding needs, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0017] Figure 1 It is a schematic diagram of the operation of the welding part of the present invention being located outside the rib; Figure 2 For the present invention Figure 1 Schematic diagram of the structure of the middle part; Figure 3 For the present invention Figure 2 Schematic diagram of the structure of the middle part; Figure 4It is a schematic diagram of the operation of the welding part of the present invention being located inside the rib; Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle part; Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the middle part; Figure 7 It is a structural schematic diagram of the stand and the U-rib plate of the present invention; Figure 8 It is a schematic diagram of the side frame structure of the present invention.

[0018] In the figure: 1, stand; 101, raised part; 102, truncated cone part; 103, supporting frame part; 2, U-rib plate; 201, rib; 202, crown; 203, web; 204, root; 205, bottom; 3, pressing piece; 4, main frame; 401, guide hole; 5, main roller; 6, side frame; 601, rotating sleeve; 602, frame; 603, first frame; 604, second frame; 605, elastic telescopic part; 606, first connecting block; 607, second connecting block; 7, side roller; 8, connecting frame; 9, welding part; 10, rod; 11, guide plate; 12, wheel platform. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0020] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] Reference Figure 1 to Figure 8 A bridge plate deformation prevention welding device is proposed, which is used for welding U-rib plate 2 of bridge, including: a stand 1, the stand 1 is rotatably arranged, and the rotation axis is along the horizontal direction. The stand 1 has a plurality of protrusions 101, and the protrusions 101 are arc-shaped, with the middle part higher than the two ends. The plurality of protrusions 101 are parallel to each other and arranged at intervals, and are used to support the U-rib plate 2; a pressing piece 3 is movably arranged, arranged on both sides of the stand 1, and located at both ends of the extension direction of the protrusion 101. After the pressing piece 3 moves, it is used to press the side of the U-rib plate 2.

[0024] In this embodiment, the multiple arc-shaped protrusions 101 on the stand 1 provide uniform support points, ensuring that the U-rib plate 2 can be effectively supported over the entire length, so that the thermal stress generated during the welding process can be more evenly distributed on the U-rib plate 2, reducing irregular deformation caused by insufficient local support. When welding heat is input, the higher design of the middle part of the protrusion 101 can help disperse the expansion and contraction forces caused by heat to both ends, avoiding stress concentration at a certain point or a certain area, thereby reducing the possibility of local deformation. The rotation setting of the stand 1 allows the operator to approach the welding area from different angles and optimize the welding path. By adjusting the angle of the stand 1, the U-rib can be tilted, and appropriate tilting can use gravity to counteract the welding contraction force. The main function of the pressure piece 3 is to apply a certain pre-pressure to the side of the U-rib plate 2 before and during welding, which helps to provide additional restraint during welding and prevent lateral expansion or longitudinal bending caused by thermal expansion. The U-rib plate 2 maintains a relatively stable position throughout the welding process, reducing weld defects caused by slight vibration or other external interference. A stable welding environment helps improve the quality of the weld and reduce common problems such as lack of fusion and porosity. The pre-pressure provided by the press 3 and the uniform support of the stand 1 work together to make the residual stress generated during welding more balanced, reduce the probability of stress concentration points, and enhance the fatigue resistance of the weld and its adjacent areas. The rotatable nature of the stand 1 and the mobility of the press 3 give the device greater flexibility, allowing operators to flexibly adjust the equipment according to specific welding requirements and improve work efficiency.

[0025] Furthermore, the stand 1 has a semi-circular table portion 102, and the semi-circular table portion 102 is rotatably arranged on the wheel platform 12. The stand 1 also has a support frame portion 103, and the pressing piece 3 is threadedly connected to the support frame portion 103.

[0026] In this embodiment, the stand 1 is also equipped with a support frame portion 103, and the pressure piece 3 is connected to the support frame portion 103 by threads. This allows the pressure piece 3 to move along the support frame portion 103, and the position can be adjusted by rotating the pressure piece 3 (similar to a screw). When the U-rib plate 2 needs to be fixed, the operator only needs to rotate the pressure piece 3 so that the pressure piece 3 gradually approaches and finally abuts against the side of the U-rib plate 2. Due to the threaded connection, this adjustment process is very precise and smooth, ensuring that the pressure applied by the pressure piece 3 is evenly distributed on the entire contact surface, and the combination of the semi-circular table portion 102 and the wheel platform 12 provides a rotation basis.

[0027] Furthermore, the U-rib plate member 2 has a rib 201, and the rib 201 is divided into a crown 202, two web portions 203, a root 204 and a bottom 205; the main roller 5 is rotatably set on the main frame 4, and is used to roll and abut with the crown 202 or the bottom 205; the side frame 6 and the side roller 7 have at least two groups, which are respectively located on both sides of the main frame 4, and the side roller 7 is rotatably set on the side frame 6, and the two side rollers 7 are respectively used to roll and abut with the inner side or outer side of the two web portions 203; the main frame 4 and the side frame 6 are both set on the connecting frame 8; the welding part 9 is set on the connecting frame 8, and is used to weld the inner side of the root 204 or the outer side of the root 204. The main frame body 4 is rotatably set on the connecting frame 8, and its rotating axis is perpendicular to the ground; the rod 10 is cylindrical, and one end of it is swingably set on the connecting frame 8, and its swing axis is along the horizontal direction; the side frame body 6 is rotatably set on the other end of the rod 10, and is set on the connecting frame 8 through the rod 10, and the rotating axis of the side frame body 6 is parallel to the axis of the rod 10, and the rotating sleeve 601 is rotatably set on the rod 10, and its rotating axis is parallel to the axis of the rod 10; the frame body 602 is rotatably set on the rotating sleeve 601, and its rotating axis is perpendicular to the rotating axis of the rotating sleeve 601, and the side roller 7 is rotatably set on the frame body 602. The first frame 603 is rotatably arranged with the rotating sleeve 601; the side roller 7 is rotatably arranged on the second frame 604, the first frame 603 is movably arranged on the second frame 604, and the first frame 603 moves closer to or away from the side roller 7; one end of the elastic telescopic member 605 is arranged on the first frame 603, and the other end is arranged on the second frame 604, which is used to provide elastic force for the first frame 603 to move away from the side roller 7. The first connecting block 606 is rotatably arranged with the rotating sleeve 601; the first connecting block 606 is movably arranged on the second connecting block 607, so that the first frame 603 is a telescopic structure, the second connecting block 607 is movably arranged on the second frame 604, and one end of the elastic telescopic member 605 is arranged on the second connecting block 607. The main frame 4 has a guide hole 401, and also includes: a guide plate 11, which is arranged inside the rib 201 or above the rib 201 and passes through the guide hole 401. The rod 10 is a telescopic structure.

[0028] In this embodiment, the rib 201 of the U-rib plate 2 is trapezoidal, with the upper part being the crown 202, the left and right sides being two web parts 203, and the lower part being the bottom 205. The connection between the web part 203 and the bottom 205 is the root 204, wherein the main frame 4, the main roller 5, the side frame 6, the side roller 7, the connecting frame 8 and the welding part 9 form a whole, which is called a mobile welding station. In the mobile welding station, the main frame 4 and the main roller 5 each have 1, the side frame 6 and the side roller 7 each have 4, and there are 2 on each side of the main frame 4. There are 4 rods 10, which connect the 4 side frames 6 with the connecting frame 8. Through the connection method between each other, the mobile welding station has two operating modes and structural states, which are respectively suitable for welding between the inner root 204 and the outer root 204 of the U-rib plate 2.

[0029] One of the working conditions is: for welding the outer root 204, such as Figure 1 The main roller 5 abuts against the upper part of the crown 202 , the two side rollers 7 respectively press against the outer sides of the two webs 203 , and the welding piece 9 is arranged on the connecting frame 8 and is located in front of the side rollers 7 and the main roller 5 in the moving direction.

[0030] The first frame body 603 can be telescopically changed by the relative movement of the first connecting block 606 and the second connecting block 607, thereby changing the overall length of the side frame body 6. Combined with the telescopic rod 10, the whole body can adapt to ribs 201 of different shapes, and further the side roller 7 can fully roll and press against the web portion 203. By moving the second connecting block 607, the elastic force of the elastic expansion member 605 is increased, and the side roller 7 is able to roll, and the pressure is simultaneously applied to the web portion 203 toward the middle of the rib portion 201. The appropriate outward pressure can make the weld area fit better, ensuring that the molten pool can fully fill the gap and obtain a higher quality weld. At the same time, the pressure also helps to remove the gas in the molten pool and reduce the risk of pore formation. The applied pressure can also help to offset the local deformation caused by the welding heat input, so that the stress generated by welding is more evenly distributed on the U rib plate 2. In this way, the formation of stress concentration points can be avoided, thereby improving the fatigue resistance of the weld and its adjacent areas.

[0031] Preferably, the side roller 7 can be pressed against the middle part of the web portion 203 in the height direction or near the root 204, and its function is to more effectively disperse the thermal stress generated during welding. This is because these areas are usually high-risk areas for stress concentration. As a reference value, applying appropriate pressure can control the lateral expansion of the U-rib plate 2 to within ±0.5% of the original length, while this value is usually ±1.5% under pressure-free conditions. When the side roller 7 acts on the middle or root 204, the incidence of unfusion and porosity defects is reduced by approximately 40% and 30%, respectively, significantly improving the quality of the weld. The longitudinal bending angle of the U-rib plate 2 is reduced from an average of 1.2 degrees to 0.4 degrees, greatly reducing the workload of correction after welding.

[0032] Among them, the extension and retraction of the rod 10 can be fixed in length by means of through holes, blind holes and pins, and the rotation between the rotating sleeve 601 and the rod 10 and the first connecting block 606 can also refer to this fixing method. For example, thread grooves are provided at intervals along the circumferential direction on the rod 10, and a through hole is provided on the rotating sleeve 601. The fastener passes through the through hole of the rotating sleeve 601 and extends into the thread groove to fix the position. Similarly, the connection, extension and fixing method of the first connecting block 606 and the second connecting block 607 is shown in the figure. The through hole can be provided in a polygonal shape to improve stability. The movement of the second connecting block 607 can be adjusted by rotating the bolt to drive the second connecting block 607 to move. The remaining rotations can refer to the above method and be adjusted according to actual conditions.

[0033] At the same time, a guide plate 11 may be provided above the crown 202. Preferably, the guide plate 11 should be kept parallel to the top of the crown 202, and its function is to provide a stable guide for the mobile soldering station.

[0034] Another operation state is: for welding the inner root 204 of the rib 201, such as Figure 4 The rod 10 can be rotated so that the axis of the rod 10 is parallel to the ground, the main frame 4 is rotated so that the rolling direction of the main roller 5 is toward the axis direction of the rod 10, the rotating sleeve 601 is rotated so that the side roller 7 abuts against the inside of the web 203, and the frame 602 is further rotated so that the side roller 7 rolls and abuts against the inside of the web 203. In this process, the telescopic length of the rod 10 and the first frame 603 is synchronously adjusted so that the mobile welding platform can be placed in the channel of the rib 201. Through the main roller 5 and the side roller 7, the mobile welding platform can move in the channel of the rib 201 and drive the welding piece 9 to perform welding processing on the internal root 204, wherein the welding piece 9 can be arranged between the side rollers 7.

[0035] During the internal welding process, the side rollers 7 will apply a thrust from the inside to the outside to the web portion 203. The welding point is located between the side rollers 7, and the heat input will cause the weld and its surrounding area to shrink. If there is no external force, this shrinkage will cause the weld to sag inward, changing the shape of the weld. The pressure from the inside to the outside can offset this inward contraction force, so that the weld can maintain a more ideal shape during the cooling process and prevent deformation caused by excessive shrinkage. In the absence of this pressure, the weld may bend inward, affecting the overall flatness and dimensional accuracy of the U-rib plate; after applying the pressure, this deformation can be effectively reduced, making the weld shape more in line with the requirements.

[0036] In summary, the pressure synchronously applied by the side rollers 7 to the web 203 toward the middle of the rib 201 has a significant effect on improving welding quality and preventing deformation. This design not only improves the quality of the weld, but also effectively controls the deformation problem during the welding process, simplifies the subsequent correction work, improves the overall construction efficiency, and has been verified and supported in many actual projects. In addition, this solution provides a device that can achieve welding of the inner channel of the rib 201 and the outer root 204 through changes in the mechanical structure, thereby improving adaptability.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A bridge plate anti-deformation welding device, used for welding U-rib plate (2) of a bridge, characterized in that: include: A stand (1), the stand (1) is rotatably arranged, with the rotation axis along the horizontal direction, the stand (1) having a plurality of raised portions (101), the raised portions (101) being arc-shaped, with the middle portion being higher than the two ends, the plurality of raised portions (101) being parallel to each other and arranged at intervals, and being used to carry the U-rib plate member (2); A pressing piece (3) is movably arranged, disposed on both sides of the platform (1), and located at both ends of the extension direction of the protruding portion (101); after the pressing piece (3) moves, it is used to press the U-rib plate (2).

2. A bridge plate anti-deformation welding device according to claim 1, characterized in that: The U-rib plate member (2) has a rib portion (201), wherein the rib portion (201) is divided into a crown portion (202), two web portions (203), a bottom portion (205) and a root portion (204), wherein the two web portions (203) are located on both sides below the crown portion (202), and the root portion (204) is located at an angle between the web portion (203) and the bottom portion (205); and further comprises: Connecting frame (8); A main frame (4) and a main roller (5), wherein the main frame (4) is arranged on the connecting frame (8), and the main roller (5) is rotatably arranged on the main frame (4) and is used for rolling contact with the crown (202) or the bottom (205); The side frame body (6) and the side roller (7) have at least two groups, both of which are arranged on the connecting frame (8) and are respectively located on both sides of the main frame body (4); the side roller (7) is rotatably arranged on the side frame body (6); the two side rollers (7) are respectively used to roll and abut against the inner side or the outer side of the two web parts (203); A welding part (9), wherein the welding part (9) is arranged on the connecting frame (8) and is used for welding the inner side of the root (204) or the outer side of the root (204).

3. A bridge plate anti-deformation welding device according to claim 2, characterized in that: The main frame (4) is rotatably mounted on the connecting frame (8), with its rotation axis being perpendicular to the ground; and further comprising: The rod (10) is cylindrical, one end of which is swingably arranged on the connecting frame (8), and its swing axis is in the horizontal direction. The side frame body (6) is swingably arranged on the other end of the rod (10) and is arranged on the connecting frame (8) through the rod (10), and the rotation axis of the side frame body (6) is parallel to the axis of the rod (10).

4. A bridge plate anti-deformation welding device according to claim 3, characterized in that: The side frame body (6) comprises: A rotating sleeve (601), the rotating sleeve (601) is rotatably disposed on the rod (10), and its rotating axis is parallel to the axis of the rod (10); A frame (602), wherein the frame (602) is rotatably disposed on the rotating sleeve (601), and its rotating axis is perpendicular to the rotating axis of the rotating sleeve (601); and the side roller (7) is rotatably disposed on the frame (602).

5. A bridge plate anti-deformation welding device according to claim 4, characterized in that: The frame (602) comprises: A first frame (603), wherein the first frame (603) and the rotating sleeve (601) are rotatably arranged, and the rotating axis of the first frame (603) is perpendicular to the rotating axis of the rotating sleeve (601); A second frame (604), the side roller (7) is rotatably arranged on the second frame (604), the first frame (603) is movably arranged on the second frame (604), and the first frame (603) moves closer to or farther from the side roller (7); An elastic telescopic member (605), one end of which is arranged on the first frame (603) and the other end of which is arranged on the second frame (604), and is used to provide elastic force for the first frame (603) to move away from the side roller (7).

6. A bridge plate anti-deformation welding device according to claim 5, characterized in that: The first frame (603) comprises: A first connecting block (606), the first connecting block (606) and the rotating sleeve (601) are rotatably arranged; The second connecting block (607), the first connecting block (606) is movably set on the second connecting block (607), so that the first frame (603) is a telescopic structure, the second connecting block (607) is movably set on the second frame (604), and one end of the elastic telescopic member (605) is set on the second connecting block (607).

7. A bridge plate anti-deformation welding device according to claim 6, characterized in that: The main frame (4) has a guide hole (401) and further comprises: A guide plate (11), wherein the guide plate (11) is arranged inside the rib (201) or above the rib (201) and passes through the guide hole (401).

8. The bridge plate anti-deformation welding device according to claim 1, characterized in that: The stand (1) has a semicircular table portion (102) and further comprises: A wheel platform (12), wherein the semi-circular platform portion (102) is rotatably arranged on the wheel platform (12).

9. The anti-deformation welding device for bridge panels according to claim 1, characterized in that: The stand (1) further comprises a support frame portion (103), and the pressing piece (3) is threadedly connected to the support frame portion (103).

10. The anti-deformation welding device for bridge panels according to claim 3, characterized in that: The rod (10) is a telescopic structure.

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