Welding device and welding method

Abstract

The invention discloses a welding device and a welding method.The welding device comprises a panel, a supporting piece, a positioning piece, a moving assembly and a welding trolley, the moving assembly is arranged on the top face of the panel, and the moving assembly can be in sliding fit with a T-beam so as to drive the panel to move in the length direction of the T-beam; the supporting piece is installed on the bottom face of the panel in a telescopic mode and can make contact with the large plate to support the panel, the positioning piece is installed on the side face, facing the T beam, of the panel in a telescopic mode and can be used for being matched with the T beam in a positioning mode, and the welding trolley can move on the panel. And then continuous welding is carried out on the welding between the T-shaped beam and the large plate. The problems that the manual welding quality is not uniform, and the welding efficiency is low are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of welding devices, and in particular to a welding device and a welding method. Background Art

[0002] In the shipbuilding industry, ship sections are composed of large plates, longitudinals, T-beams, and sidings. During assembly, longitudinals and T-beams are often attached to the large plates to form a "tic-tac-toe" structure. For flat angle welds within this "tic-tac-toe" grid, a hybrid welding method combining a fillet welding trolley and manual welding is currently widely used. However, this method has significant drawbacks. Frequent equipment switching and cumbersome manual welding operations result in low overall efficiency, significantly impacting the progress of ship section manufacturing and increasing production and time costs.

[0003] In terms of weld quality and welding defect control, the quality of the manual welding repair part is difficult to keep consistent with the fillet welding trolley welding part, resulting in an uneven weld surface and increasing the workload of subsequent grinding; the quality of manual welding is greatly affected by the welder's skill level, which can easily lead to unstable quality problems such as insufficient weld strength, porosity, and slag inclusions; at the same time, there are many flat fillet welds in the "cross" grid, which can easily produce defects such as incomplete fusion and incomplete penetration, affecting the mechanical properties of the weld and the strength and reliability of the ship's segmented structure, endangering the safe operation and service life of the ship. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a welding device and a welding method, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solutions: On the one hand, a welding device is provided, which is used for welding flat-angle welds of a ship's segmented crisscross structure. The ship's segmented crisscross structure includes a large plate, a plurality of longitudinal bones and a plurality of T-beams. The plurality of longitudinal bones and the plurality of T-beams are vertically cross-installed on the large plate, and there are welds between the T-beams and the large plate. The welding device includes: a panel, a support, a positioning member, a movable assembly and a welding trolley. The movable assembly is arranged on the top surface of the panel, and the movable assembly can slide with the T-beam to drive the panel to move along the length direction of the T-beam. The support member is telescopically installed on the bottom surface of the panel, and the support member can contact the large plate to support the panel. The positioning member is telescopically installed on the side of the panel facing the T-beam. The positioning member can be used to position and cooperate with the T-beam. The welding trolley can move on the panel and then continuously weld the T-beam and the large plate.

[0006] Furthermore, the moving assembly includes a connecting member protruding from the top surface of the panel, and a sliding member provided on the connecting member, wherein the sliding member is at least partially in contact with the top surface of the T-beam and has friction.

[0007] Furthermore, the connecting member includes a support column vertically protruding from the panel, a mounting plate extending vertically along the top of the support column above the top surface of the T-beam, the sliding member includes a power part arranged in the mounting plate, and a pulley arranged on the side of the mounting plate facing the T-beam, the pulley is transmission-connected to the power part, and the pulley abuts against the top surface of the T-beam.

[0008] Furthermore, a convex plate is provided on the top surface of the panel facing away from the connecting piece, and a top wheel is provided on the welding carriage that slidably cooperates with the convex plate, so that the welding carriage moves along the length direction of the convex plate.

[0009] Furthermore, there are two support members, which are spaced apart and arranged on the bottom surface of the panel, and the distance between the two support members is smaller than the distance between two adjacent longitudinal bones, and the length of the panel is greater than or equal to the distance between two adjacent longitudinal bones.

[0010] Furthermore, a camera is provided on the welding carriage, and the camera is used to obtain welding image information of the weld. The camera is electrically connected to the welding carriage and the moving component respectively.

[0011] Furthermore, the support member has an extended state and a storage device. When in the extended state, the bottom of the support member abuts against the large plate. When in the storage state, the bottom height of the support member is higher than the top surface height of the longitudinal bone.

[0012] Furthermore, the support member is configured such that when the moving assembly drives the panel to move, the support member switches to the retracted state; and when the moving assembly stops moving, the support member switches to the extended state.

[0013] On the other hand, a welding method is also provided, using the welding device as described above, the steps of the welding method including: placing the welding device between two adjacent longitudinal bones, the welding trolley moving along the length direction of the panel, and the welding end of the welding trolley continuously welding the weld between the T-beam and the large plate.

[0014] Furthermore, during the welding process of the welding carriage, the image information of the weld is obtained in real time through the camera. When the weld is qualified, the moving component drives the panel to move to the next adjacent welding station to continue welding. When the weld is unqualified, the welding carriage moves to the position where the weld is unqualified and re-welds.

[0015] The beneficial effects of this application are: through the clever coordination of positioning parts, support parts and mobile components, precise positioning and stable support on the ship section cross structure are achieved. Its biggest advantage is that after completing the welding of the welds in one welding station, there is no need to manually disassemble the device. The mobile component can drive the entire device to move to the next adjacent welding station and directly weld the welds in the next station. This design greatly improves the efficiency of welding operations, reduces the time cost of manual operation and equipment disassembly and installation, and at the same time ensures the stability and consistency of weld quality, reduces the risk of defects caused by multiple welding joints, improves the overall structural strength and reliability of the ship section, and provides a strong guarantee for the safe operation and service life of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described in detail below with reference to the accompanying drawings and examples.

[0017] Figure 1 This is a schematic diagram of the application state of the welding device according to an embodiment of the present application; Figure 2 For the embodiment of this application Figure 1 A magnified schematic diagram of point A in the middle; Figure 3 This is a schematic diagram of the welding carriage described in an embodiment of the present application; Figure 4 This is a schematic diagram of the welding device described in an embodiment of the present application (excluding the welding carriage).

[0018] In the figure: 1. Large plate; 2. Longitudinal bone; 3. T-beam; 4. Panel; 5. Support member; 6. Positioning member; 7. Moving assembly; 701. Connecting member; 702. Sliding member; 8. Welding trolley; 9. Top wheel; 10. Camera; 11. Convex plate. DETAILED DESCRIPTION

[0019] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0020] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0021] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0022] like Figure 1-Figure 4 As shown, this embodiment provides a welding device, which is used for welding flat-angle welds of a ship's segmented well structure. The ship's segmented well structure includes a large plate 1, a plurality of longitudinal bones 2 and a plurality of T-beams 3. The plurality of longitudinal bones 2 and the plurality of T-beams 3 are vertically cross-mounted on the large plate 1. There is a weld between the T-beam 3 and the large plate 1. The welding device includes: a panel 4, a support 5, a positioning member 6, a moving component 7 and a welding carriage 8. The moving component 7 is arranged on the top surface of the panel 4, and the moving component 7 can slide with the T-beam 3 to drive the panel 4 to move along the length direction of the T-beam 3. The support 5 can be telescopically installed on the bottom surface of the panel 4, and the support 5 can contact the large plate 1 to support the panel 4. The positioning member 6 can be telescopically installed on the side of the panel 4 facing the T-beam 3. The positioning member 6 can be used to position and cooperate with the T-beam 3. The welding carriage 8 can move on the panel 4, and then continuously weld the welds between the T-beam 3 and the large plate 1.

[0023] Based on this solution, during operation, positioning member 6 telescopically engages with T-beam 3, its extended portion precisely snapping into place on T-beam 3 to establish the initial position of the device on T-beam 3. Support member 5 is retractably mounted on the underside of panel 4. When the device reaches the welding position, support member 5 extends and contacts the large plate 1, providing stable support and ensuring that the device does not shake during welding. The welding carriage 8 flexibly moves on panel 4 to weld the seam between T-beam 3 and large plate 1.

[0024] After the welding of the weld seam of a welding station is completed, the support member 5 and the positioning member 6 retract at the same time. The support member 5 is separated from the contact with the large plate 1, and the positioning member 6 is also separated from the T-beam 3, so that the device is in a movable state. At this time, the moving component 7 comes into play. It is set on the top surface of the panel 4 and can slide with the T-beam 3, driving the entire device to move smoothly along the length direction of the T-beam 3 to the next adjacent welding station. After arriving at the new station, the positioning member 6 and the support member 5 are extended at the same time, and the positioning member 6 is positioned and matched with the T-beam 3 again to ensure that the device is accurately positioned at the new station, and the support member 5 is re-contacted with the large plate 1 to provide stable support for the device. After completing precise positioning and stable support, the welding carriage 8 starts welding again to weld the weld in the next station.

[0025] The welding device realizes efficient operation during the welding process of the ship section cross structure through the coordinated work of the positioning member 6, the support member 5 and the moving assembly 7. After completing the welding of a welding station, there is no need to manually disassemble the device. The support member 5 and the positioning member 6 shrink at the same time, and the moving assembly 7 can drive the entire device to automatically move to the next adjacent welding station. After arriving at the new station, the positioning member 6 and the support member 5 extend at the same time, quickly completing accurate positioning and stable support. This design not only greatly improves the efficiency of welding operations and reduces the time cost of manual operation and equipment disassembly and installation, but also ensures the accuracy of device positioning and the stability of support at each welding station, so that the welding trolley 8 can perform continuous welding in a stable environment, thereby ensuring the stability and consistency of weld quality, reducing the risk of defects caused by multiple welding joints, and improving the overall structural strength and reliability of the ship section, providing a solid guarantee for the safe operation and service life of the ship.

[0026] Furthermore, the moving assembly 7 includes a connector 701 protruding from the top surface of the panel 4 and a sliding member 702 mounted on the connector 701. The sliding member 702 at least partially contacts the top surface of the T-beam 3 and exerts friction. During operation, the connector 701 connects the panel 4 and the sliding member 702, tightly integrating them into a single unit. The sliding member 702 at least partially contacts the top surface of the T-beam 3 and exerts friction therewith. When the device needs to move from one welding station to the next, the sliding member 702, due to the frictional contact between the sliding member 702 and the top surface of the T-beam 3, slides along the top surface of the T-beam 3 under the influence of an external driving force (such as manual propulsion or mechanical drive). This sliding mechanism enables the entire device to move smoothly and smoothly along the length of the T-beam 3, leveraging the friction between the sliding member 702 and the top surface of the T-beam 3, thereby enabling transfer from one welding station to the next.

[0027] Furthermore, the connector 701 comprises a support column vertically projecting from the panel 4, and a mounting plate extending vertically along the top of the support column above the top surface of the T-beam 3. The sliding member 702 comprises a power unit disposed within the mounting plate, and a pulley disposed on the side of the mounting plate facing the T-beam 3, the pulley being in transmission connection with the power unit and abutting the top surface of the T-beam 3. The support column connects the panel 4 and the mounting plate, providing stable support for the entire connector 701 structure and ensuring that the mounting plate is accurately and securely positioned above the top surface of the T-beam 3. The sliding member 702 comprises a power unit disposed within the mounting plate, and a pulley disposed on the side of the mounting plate facing the T-beam 3, the pulley being in transmission connection with the power unit. When the device needs to move from one welding station to the next adjacent welding station, the power unit is activated, transmitting power to the pulley. As the pulley abuts the top surface of the T-beam 3, the power unit rotates under the action of the power. The friction between the pulley and the top surface of the T-beam 3 drives the entire device to move smoothly along the length of the T-beam 3. The power unit can control the speed and direction of the pulley according to actual needs, thereby realizing the movement of the device at different speeds and directions, meeting the diverse needs for device position adjustment during welding operations.

[0028] In some embodiments, a protruding plate 11 is provided on the top surface of the panel 4 on the side facing away from the connector 701, and the welding carriage 8 is provided with a top wheel 9 that slides with the protruding plate 11, so that the welding carriage 8 moves along the length of the protruding plate 11. From the perspective of welding accuracy, the protruding plate 11 provides a stable and precise moving track for the welding carriage 8, allowing the welding carriage 8 to always maintain the correct direction during movement without offset or shaking, thereby greatly improving the accuracy and quality of welding, reducing welding defects caused by inaccurate welding positions, and ensuring the connection strength and reliability of the flat-angle welds of the ship's segmented cross-section structure. In terms of operational convenience, the sliding engagement between the top wheel 9 and the protruding plate 11 is simple and easy, allowing the welding carriage 8 to easily move along the protruding plate 11, without the operator having to perform complex positioning and adjustment operations, reducing operational difficulty and labor intensity, and improving the efficiency of the welding operation.

[0029] In addition, two support members 5 are provided. The two support members 5 are spaced apart on the bottom surface of the panel 4, and the distance between the two support members 5 is less than the distance between two adjacent longitudinal bones 2. The length of the panel 4 is greater than or equal to the distance between two adjacent longitudinal bones 2. When the device is working, when the device moves to the top of the welding station between two adjacent longitudinal bones 2, since the distance between the two support members 5 is less than the distance between adjacent longitudinal bones 2, it can ensure that at least one support member 5 is in the appropriate position between the adjacent longitudinal bones 2, in contact with the large plate 1, thereby providing stable support for the panel 4. The length of the panel 4 is greater than or equal to the distance between two adjacent longitudinal bones 2, so that the panel 4 can completely cover the welding area between the two adjacent longitudinal bones 2, providing sufficient working space for the welding carriage 8. When the welding carriage 8 moves on the panel 4 for welding, the two support members 5 work together to ensure that the panel 4 always remains stable and will not shake due to the movement of the welding carriage 8 or external factors, providing a stable environment for the welding operation.

[0030] The welding carriage 8 is also equipped with a camera 10 for capturing welding image information of the weld seam. The camera 10 is electrically connected to the welding carriage 8 and the mobile assembly 7. During the welding process, as the welding carriage 8 moves along the panel 4 to weld the weld seam, the camera 10 is simultaneously activated to capture real-time welding image information of the weld seam. This image information includes key information such as the weld seam's appearance, the state of the weld pool, and initial signs of welding defects (such as porosity and slag inclusions). Because the camera 10 is electrically connected to the welding carriage 8, the welding carriage 8 can adjust its welding parameters, such as welding current, welding speed, and welding gun angle, in real time based on the image information captured by the camera 10 to ensure that welding quality meets requirements. Furthermore, because the camera 10 is electrically connected to the mobile assembly 7, the mobile assembly 7 can determine whether the current position of the device is suitable for continuing to the next welding station or whether the device's position on the T-beam 3 needs to be adjusted based on the image information provided by the camera 10. This ensures that the welding carriage 8 is always in the optimal welding position, achieving efficient and accurate welding.

[0031] In some embodiments, the support member 5 has an extended state and a storage device. When in the extended state, the bottom of the support member 5 abuts against the large plate 1. When in the storage state, the bottom height of the support member 5 is higher than the top surface height of the longitudinal bone 2. When the device needs to perform welding operations at a welding station, the support member 5 switches to the extended state. At this time, the bottom of the support member 5 extends downward until it abuts against the large plate 1. The large plate 1 provides a stable support surface for the support member 5. Through the contact between the support member 5 and the large plate 1, the weight of the device is evenly distributed, ensuring that the device remains stable during the welding process and will not shake due to vibrations or external forces generated by welding, creating a stable working environment for the welding carriage 8. When the device completes welding at the current welding station and needs to move to the next adjacent welding station, the support member 5 switches to the storage state. In the retracted state, the bottom of the support member 5 shrinks upward so that its height is greater than the top surface height of the longitudinal bone 2. In this way, when the device moves along the T-beam 3, the support member 5 will not interfere with the longitudinal bone 2, ensuring that the device can move smoothly and steadily from one welding station to the next, avoiding equipment damage or movement obstruction caused by collision between the support member 5 and the longitudinal bone 2.

[0032] At the same time, the support member 5 is configured so that when the moving assembly 7 moves the panel 4, the support member 5 switches to the retracted state; when the moving assembly 7 stops, the support member 5 switches to the extended state. When the moving assembly 7 starts and moves the panel 4, the system issues a corresponding command to switch the support member 5 to the retracted state. At this point, the bottom of the support member 5 retracts upward, away from the large plate 1 and positioned above the top surface of the longitudinal beam 2. This allows space for the device to move, avoids collision or interference with the longitudinal beam 2 and other structures during movement, and ensures that the device can move smoothly and steadily along the T-beam 3 to the next welding station. When the moving assembly 7 stops, indicating that the device has reached the new welding station, the system issues another command to switch the support member 5 to the extended state. The bottom of the support member 5 extends downward, tightly abutting the large plate 1, providing stable support for the device and enabling the welding carriage 8 to perform welding operations on the new weld in a stable environment.

[0033] On the other hand, a welding method is also provided, using the welding device as described above, the steps of the welding method include: placing the welding device between two adjacent longitudinal bones 2, the welding trolley 8 moving along the length direction of the panel 4, and the welding end of the welding trolley 8 continuously welding the weld between the T-beam 3 and the large plate 1.

[0034] When using the above-mentioned welding device for welding operations, first place the welding device between two adjacent longitudinal bones 2. At this time, since the support member 5 has the function of automatically switching states according to the action of the moving component 7, during the placement process, the moving component 7 has not yet been started, the support member 5 is in an extended state, and its bottom is in contact with the large plate 1, providing stable support for the entire welding device, ensuring that the device is placed stably and will not shake due to external factors. Subsequently, the welding carriage 8 begins to move along the length direction of the panel 4. During the movement, the moving component 7 drives the panel 4 and the welding carriage 8 to move together, and the support member 5 automatically switches to the storage state to avoid interference with the longitudinal bones 2. The welding end of the welding carriage 8 continues to weld the weld between the T-beam 3 and the large plate 1 during the movement, and the T-beam 3 and the large plate 1 are firmly connected together by continuous welding.

[0035] This welding method based on a specific welding device has brought many significant beneficial effects. First, the welding trolley 8 continuously welds along the length of the panel 4, which can ensure the continuity and uniformity of the weld, reduce welding defects caused by welding interruption or improper operation, such as incomplete welds, slag inclusions, air holes, etc., greatly improve the welding quality, ensure the strength and reliability of the connection between the T-beam 3 and the large plate 1, and provide a solid guarantee for the overall stability of the ship section cross structure; second, the automated movement of the welding device and the state switching function of the support 5 are used to reduce the time and labor intensity of manual operation. The welding trolley 8 can move along the weld quickly and accurately and weld without the need to frequently adjust the position of the device or perform complex positioning operations, which improves the continuity and efficiency of the welding operation, shortens the manufacturing cycle of the ship section, and reduces production costs; third, the entire welding process does not require excessive manual intervention. The operator only needs to place the welding device in the appropriate position and start the welding trolley 8 to complete the welding operation. This simple operation method reduces the requirements for the operator's skill level, reduces the impact of human factors on welding quality, and also facilitates the standardization and normalization of welding operations. Fourthly, this welding method fully utilizes the structural characteristics of the welding device, and can adapt to the welding requirements of longitudinal bones 2, T-beams 3 and large plates 1 of different specifications and spacings. It has good versatility and adaptability, and provides shipbuilding companies with a more flexible and efficient welding solution.

[0036] Preferably, during the welding process of the welding carriage 8, the camera 10 captures real-time image information of the weld seam. If the weld seam is acceptable, the mobile assembly 7 drives the panel 4 to move to the next adjacent welding station for continued welding. If the weld seam is unacceptable, the welding carriage 8 moves to the unacceptable position for re-welding. During the welding process of the welding carriage 8 welding the weld seam between the T-beam 3 and the plate 1, the camera 10 remains in operation, capturing real-time image information of the weld seam. This image information includes key information such as the weld seam's appearance, the state of the weld pool, the weld seam's width and height, and the presence of welding defects (such as porosity, slag inclusions, and cracks). The captured image information is transmitted to the corresponding control system for analysis and assessment. If the control system determines that the weld seam is acceptable, it issues a command to the mobile assembly 7, which drives the panel 4 to move, causing the entire welding apparatus (including the welding carriage 8, support member 5, etc.) to move to the next adjacent welding station, where the welding carriage 8 continues welding. When the control system determines that the weld is unqualified, it will determine the specific location of the unqualified weld based on the image information, and then control the welding carriage 8 to move to that location and re-perform the welding operation until the weld quality meets the requirements.

[0037] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other positions or relationships are used solely for ease of description and simplified operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0038] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0040] The technical principles of the present application have been described above in conjunction with specific embodiments. These descriptions are intended solely to explain the principles of the present application and are not to be construed in any way as limiting the scope of protection of the present application. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present application without inventive effort, and such implementations will fall within the scope of protection of the present application.

Claims

1. A welding device, used for welding flat fillet welds of a ship's segmented crisscross structure, wherein the ship's segmented crisscross structure comprises a large plate (1), a plurality of longitudinals (2) and a plurality of T-beams (3), wherein the plurality of longitudinals (2) and the plurality of T-beams (3) are vertically and cross-mounted on the large plate (1), and a weld is formed between the T-beams (3) and the large plate (1), characterized in that: The welding device comprises: a panel (4), a support member (5), a positioning member (6), a moving assembly (7) and a welding carriage (8), wherein the moving assembly (7) is arranged on the top surface of the panel (4), the moving assembly (7) can slide and cooperate with the T-beam (3) to drive the panel (4) to move along the length direction of the T-beam (3), the support member (5) can be telescopically installed on the bottom surface of the panel (4), the support member (5) can contact the large plate (1) to support the panel (4), the positioning member (6) can be telescopically installed on the side of the panel (4) facing the T-beam (3), the positioning member (6) can be used to position and cooperate with the T-beam (3), and the welding carriage (8) can move on the panel (4) to continuously weld the T-beam (3) and the large plate (1).

2. The welding device according to claim 1, characterized in that The moving assembly (7) comprises a connecting member (701) protruding from the top surface of the panel (4), and a sliding member (702) arranged on the connecting member (701), wherein the sliding member (702) at least partially contacts the top surface of the T-beam (3) and has friction.

3. The welding device according to claim 2, characterized in that The connecting member (701) includes a support column vertically protruding from the panel (4), and a mounting plate vertically extending along the top of the support column above the top surface of the T-beam (3). The sliding member (702) includes a power unit arranged in the mounting plate, and a pulley arranged on the side of the mounting plate facing the T-beam (3), the pulley being transmission-connected to the power unit and abutting against the top surface of the T-beam (3).

4. The welding device according to claim 2, characterized in that A convex plate (11) is provided on the top surface of the panel (4) on the side facing away from the connecting member (701), and a top wheel (9) is provided on the welding carriage (8) that is slidably engaged with the convex plate (11), so that the welding carriage (8) moves along the length direction of the convex plate (11).

5. The welding device according to any one of claims 1 to 4, characterized in that: Two support members (5) are provided, and the two support members (5) are spaced apart and arranged on the bottom surface of the panel (4), and the distance between the two support members (5) is less than the distance between two adjacent longitudinal bones (2), and the length of the panel (4) is greater than or equal to the distance between two adjacent longitudinal bones (2).

6. The welding device according to any one of claims 1 to 4, characterized in that: The welding trolley (8) is provided with a camera (10), and the camera (10) is used to obtain welding image information of the weld seam. The camera (10) is electrically connected to the welding trolley (8) and the moving component (7), respectively.

7. The welding device according to any one of claims 1 to 4, characterized in that: The support member (5) has an extended state and a storage device. When in the extended state, the bottom of the support member (5) abuts against the large plate (1). When in the storage state, the bottom height of the support member (5) is higher than the top surface height of the longitudinal bone (2).

8. The welding device according to claim 7, characterized in that The support member (5) is configured such that when the moving assembly (7) drives the panel (4) to move, the support member (5) switches to the retracted state; and when the moving assembly (7) stops moving, the support member (5) switches to the extended state.

9. A welding method, characterized in that: Using the welding device according to any one of claims 1 to 8, the steps of the welding method include: placing the welding device between two adjacent longitudinal frames (2), moving the welding carriage (8) along the length direction of the panel (4), and continuously welding the weld between the T-beam (3) and the large plate (1) with the welding end of the welding carriage (8).

10. The welding method according to claim 9, characterized in that: During the welding process of the welding carriage (8), image information of the weld is obtained in real time through the camera (10). When the weld is qualified, the moving component (7) drives the panel (4) to move to the next adjacent welding station to continue welding. When the weld is unqualified, the welding carriage (8) moves to the position where the weld is unqualified and re-welds.

Images