A welding device and a welding method

Abstract

The application 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 surface of the panel and can be slidably matched with the T-beam to drive the panel to move along the length direction of the T-beam. The supporting piece is telescopically arranged on the bottom surface of the panel and can be in contact with the large plate to support the panel. The positioning piece is telescopically arranged on the side surface of the panel facing the T-beam and can be used to be positioned and matched with the T-beam. The welding trolley can move on the panel to continuously weld the welding between the T-beam and the large plate. The application effectively solves the problems of inconsistent quality of manual welding and low welding efficiency.

Description

Technical Field

[0001] This application relates to the technical field of welding apparatus, and more particularly to a welding apparatus and welding method. Background Technology

[0002] In the shipbuilding industry, ship sections are composed of structures such as large plates, longitudinal skeletons, T-beams, and bulkheads. During assembly, longitudinal skeletons and T-beams are often installed on the large plates to form a "grid" structure. For fillet welds within this grid, a hybrid welding method combining fillet welding carriages and manual welding is currently widely used. However, this method has significant drawbacks. In terms of operational efficiency, frequent equipment switching and cumbersome manual welding operations result in low overall efficiency, severely impacting the ship section manufacturing schedule and increasing both production and time costs.

[0003] Regarding the control of weld quality and welding defects, the quality of manual welding repairs is difficult to maintain in line with that of fillet welding trolleys, resulting in uneven weld surfaces and increasing the workload of subsequent grinding. The quality of manual welding is greatly affected by the skill level of the welder, 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 weld joints in the "grid" pattern, which are prone to defects such as incomplete fusion and incomplete penetration, affecting the mechanical properties of the weld and the strength and reliability of the ship's section structure, endangering the safe operation and service life of the ship. Summary of the Invention

[0004] The purpose of this invention is to provide a welding apparatus and welding method that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution: On one hand, a welding apparatus is provided for welding fillet welds on a lattice structure of a ship section. The lattice structure includes a large plate, multiple longitudinal ribs, and multiple T-beams. The longitudinal ribs and T-beams are perpendicularly and intersectingly installed on the large plate. There is a weld between the T-beams and the large plate. The welding apparatus includes a panel, a support member, a positioning member, a moving component, and a welding trolley. The moving component is disposed on the top surface of the panel and can slide with the T-beams to move the panel along the length of the T-beams. The support member is telescopically installed on the bottom surface of the panel and can contact the large plate to support the panel. The positioning member is telescopically installed on the side of the panel facing the T-beams and can be used to position and cooperate with the T-beams. The welding trolley can move on the panel to continuously weld the T-beams and the large plate.

[0006] Furthermore, the movable component includes a connector protruding from the top surface of the panel and a slider disposed on the connector, the slider being at least partially in contact with the top surface of the T-beam and having frictional force.

[0007] Furthermore, the connector includes a support column vertically protruding from the panel and 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 unit disposed within the mounting plate and a pulley disposed on the side of the mounting plate facing the T-beam. The pulley is connected to the power unit in a transmission manner, and the pulley abuts against the top surface of the T-beam.

[0008] Furthermore, a protruding plate is provided on the top surface of the panel opposite to the connector, and a top wheel is provided on the welding trolley that slides with the protruding plate so that the welding trolley can move along the length direction of the protruding plate.

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

[0010] Furthermore, the welding carriage is equipped with a camera, which is used to acquire 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 retracted state. When it is in the extended state, the bottom of the support member abuts against the large plate. When it is in the retracted state, the bottom height of the support member is higher than the top surface height of the longitudinal rib.

[0012] Furthermore, the support member is configured such that when the moving component moves the panel, the support member switches to the retracted state, and when the moving component stops moving, the support member switches to the extended state.

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

[0014] Furthermore, during the welding process of the welding trolley, the image information of the weld is acquired in real time by 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 trolley moves to the unqualified position to re-weld.

[0015] The beneficial effects of this application are as follows: through the ingenious cooperation of positioning components, support components, and moving components, precise positioning and stable support are achieved on the grid structure of ship sections. Its greatest advantage lies in the fact that after completing the weld at one welding station, the moving components can move the entire device to the next adjacent welding station without manual disassembly, allowing direct welding of the weld at that station. This design greatly improves welding efficiency, reduces the time cost of manual operation and equipment disassembly and installation, while ensuring the stability and consistency of weld quality, reducing the risk of defects due to numerous weld joints, and enhancing the overall structural strength and reliability of the ship sections, providing strong protection for the safe operation and service life of the ship. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram illustrating the application state of the welding apparatus described in the embodiments of this application; Figure 2 Examples of this application Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the welding carriage described in the embodiments of this application; Figure 4 This is a schematic diagram of the welding apparatus described in the embodiments of this application (excluding the welding carriage).

[0018] In the diagram: 1. Large plate; 2. Longitudinal rib; 3. T-beam; 4. Panel; 5. Support component; 6. Positioning component; 7. Moving component; 701. Connector; 702. Sliding component; 8. Welding trolley; 9. Top wheel; 10. Camera; 11. Convex plate. Detailed Implementation

[0019] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] like Figures 1-4 As shown, this embodiment provides a welding device for welding fillet welds in a ship section grid structure. The ship section grid structure includes a large plate 1, multiple longitudinal ribs 2, and multiple T-beams 3. The multiple longitudinal ribs 2 and multiple T-beams 3 are vertically and intersectingly installed on the large plate 1. There is a weld between the T-beams 3 and the large plate 1. The welding device includes: a panel 4, a support 5, a positioning component 6, a moving component 7, and a welding carriage 8. The moving component 7 is disposed on the top surface of the panel 4. The moving component 7 can slide and engage with the T-beams 3, thereby driving the panel 4 to move along the length direction of the T-beams 3. The support 5 is telescopically installed on the bottom surface of the panel 4. The support 5 can contact the large plate 1 to support the panel 4. The positioning component 6 is telescopically installed on the side of the panel 4 facing the T-beams 3. The positioning component 6 can be used to position and engage with the T-beams 3. The welding carriage 8 can move on the panel 4, thereby continuously welding the T-beams 3 and the large plate 1.

[0023] Based on the above scheme, during operation, the positioning component 6 can extend and retract to engage with the T-beam 3, with its extended portion precisely engaging the corresponding position on the T-beam 3 to determine the initial position of the device on the T-beam 3; the support component 5 is retractably installed on the bottom surface of the panel 4. When the device reaches the welding position, the support component 5 extends and contacts the large plate 1, providing stable support for the device and ensuring that the device will not shake during the welding process. The welding carriage 8 moves flexibly on the panel 4 to weld the seam between the T-beam 3 and the large plate 1.

[0024] After the weld at one welding station is completed, the support member 5 and the positioning member 6 retract simultaneously. The support member 5 disengages from the large plate 1, and the positioning member 6 also detaches from the T-beam 3, making the device movable. At this time, the moving component 7 comes into play. It is located 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 of the T-beam 3 to the next adjacent welding station. Upon reaching the new station, the positioning member 6 and the support member 5 extend simultaneously. The positioning member 6 re-engages with the T-beam 3 to ensure accurate positioning of the device at the new station, while the support member 5 re-engages with the large plate 1, providing stable support for the device. After achieving accurate positioning and stable support, the welding carriage 8 resumes welding to weld the seam at the next station.

[0025] This welding device achieves highly efficient operation during the welding of ship section lattice structures through the coordinated work of positioning component 6, support component 5, and moving component 7. After completing welding at one station, the device can be automatically moved to the next adjacent welding station without manual disassembly, as support component 5 and positioning component 6 retract simultaneously. Upon arrival at the new station, positioning component 6 and support component 5 extend simultaneously, quickly achieving precise positioning and stable support. This design not only greatly improves welding efficiency 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. This allows the welding carriage 8 to perform continuous welding in a stable environment, thereby ensuring the stability and consistency of weld quality, reducing the risk of defects caused by numerous weld joints, and improving the overall structural strength and reliability of ship sections, providing a solid guarantee for the safe operation and service life of the ship.

[0026] Furthermore, the moving component 7 includes a connector 701 protruding from the top surface of the panel 4 and a slider 702 disposed on the connector 701. The slider 702 at least partially contacts the top surface of the T-beam 3 and has friction. During operation, the connector 701 connects the panel 4 and the slider 702, tightly integrating them into a whole. The slider 702 at least partially contacts the top surface of the T-beam 3, and there is friction between them. When the device needs to move from one welding station to the next adjacent welding station, due to the contact and friction between the slider 702 and the top surface of the T-beam 3, the slider 702 will slide along the top surface of the T-beam 3 under the action of external driving force (such as manual pushing, mechanical power, etc.). This sliding method allows the entire device to move smoothly and steadily along the length of the T-beam 3 by means of the friction between the slider 702 and the top surface of the T-beam 3, thereby realizing the transfer from one welding station to the next.

[0027] Furthermore, the connector 701 includes a support column vertically protruding from the panel 4 and a mounting plate extending vertically above the top surface of the T-beam 3 along the top of the support column. The sliding member 702 includes 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 is drivenly connected to the power unit and abuts against the top surface of the T-beam 3. The support column serves to connect the panel 4 and the mounting plate, providing stable support for the entire connector 701 structure and ensuring that the mounting plate can be accurately and securely positioned above the top surface of the T-beam 3. The sliding member 702 includes a power unit disposed within the mounting plate and a pulley disposed on the side of the mounting plate facing the T-beam 3, with the pulley being drivenly connected to 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. Since the pulley abuts against the top surface of the T-beam 3, under the action of power, the pulley begins to rotate, and through the friction between it and the top surface of the T-beam 3, it 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 pulleys according to actual needs, thereby enabling the device to move at different speeds and directions, meeting the diverse needs for device position adjustment in welding operations.

[0028] In some embodiments, a protruding plate 11 is provided on the top surface of the panel 4 opposite to the connector 701, and a top wheel 9 is provided on the welding carriage 8 to slide in cooperation with the protruding plate 11, so that the welding carriage 8 can move along the length direction 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, ensuring that the welding carriage 8 can always maintain the correct direction during movement without deviation 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 fillet welds of the ship section grid structure. In terms of operational convenience, the sliding cooperation between the top wheel 9 and the protruding plate 11 is simple and easy to implement. The welding carriage 8 can easily move along the protruding plate 11 without the need for complex positioning and adjustment operations by the operator, reducing the difficulty and labor intensity of operation and improving the efficiency of welding operations.

[0029] Furthermore, two support members 5 are provided, spaced apart on the bottom surface of the panel 4, with the distance between the two support members 5 being less than the distance between two adjacent longitudinal ribs 2. The length of the panel 4 is greater than or equal to the distance between two adjacent longitudinal ribs 2. During operation, when the device moves above the welding station between two adjacent longitudinal ribs 2, the distance between the two support members 5, being less than the distance between the adjacent longitudinal ribs 2, ensures that at least one support member 5 is positioned appropriately between the adjacent longitudinal ribs 2, contacting the large plate 1 and 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 ribs 2, allowing the panel 4 to completely cover the welding area between the two adjacent longitudinal ribs 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 remains stable and does not shake due to the movement of the welding carriage 8 or external factors, providing a stable environment for the welding operation.

[0030] Meanwhile, a camera 10 is installed on the welding carriage 8. The camera 10 is used to acquire welding image information of the weld. The camera 10 is electrically connected to both the welding carriage 8 and the moving component 7. During the welding operation, when the welding carriage 8 moves along the panel 4 to weld the weld, the camera 10 is simultaneously activated to capture welding image information at the weld in real time. This image information includes key information such as the appearance of the weld, the state of the weld pool, and preliminary signs of welding defects (such as porosity, slag inclusions, etc.). Since the camera 10 is electrically connected to the welding carriage 8, the welding carriage 8 can adjust its welding parameters in real time, such as welding current, welding speed, and welding torch angle, based on the image information acquired by the camera 10, to ensure that the welding quality meets the requirements. At the same time, because the camera 10 is electrically connected to the moving component 7, the moving component 7 can determine whether the current position of the device is suitable for continuing to weld the next station, or whether the position of the device on the T-beam 3 needs to be adjusted, based on the image information fed back by the camera 10, to ensure that the welding carriage 8 is always in the optimal welding position, achieving efficient and precise welding.

[0031] In some embodiments, the support member 5 has an extended state and a retracted state. In the extended state, the bottom of the support member 5 abuts against the large plate 1. In the retracted state, the bottom height of the support member 5 is higher than the top surface height of the longitudinal rib 2. When the device needs to perform welding operations at a welding station, the support member 5 switches to the extended state, at which 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 during 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 retracted state. In its stowed state, the bottom of the support member 5 retracts upward, making its height greater than the top surface height of the longitudinal rib 2. This ensures that the support member 5 will not interfere with the longitudinal rib 2 during the movement of the device along the T-beam 3, thus guaranteeing that the device can move smoothly and stably from one welding station to the next, avoiding equipment damage or movement obstruction caused by the collision between the support member 5 and the longitudinal rib 2.

[0032] Meanwhile, the support member 5 is configured such that when the moving component 7 moves the panel 4, the support member 5 switches to the retracted state; when the moving component 7 stops moving, the support member 5 switches to the extended state. When the moving component 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 time, the bottom of the support member 5 retracts upward, away from the large plate 1 and above the top surface of the longitudinal rib 2, making room for the movement of the device and avoiding collisions or interference with the longitudinal rib 2 and other structures during movement, ensuring that the device can move smoothly and stably along the T-beam 3 to the next welding station. When the moving component 7 stops moving, it means that the device has reached the new welding station, and the system issues another command, switching the support member 5 to the extended state. The bottom of the support member 5 extends downward, closely abutting against the large plate 1, providing stable support for the device, allowing the welding carriage 8 to perform welding operations on the new weld seam in a stable environment.

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

[0034] When using the aforementioned welding device for welding operations, the welding device is first placed between two adjacent longitudinal ribs 2. At this time, since the support member 5 has the function of automatically switching states according to the movement of the moving component 7, during the placement process, the moving component 7 has not yet been activated, and the support member 5 is in the extended state, with its bottom abutting against the large plate 1, providing stable support for the entire welding device and 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, while the support member 5 automatically switches to the retracted state to avoid interference with the longitudinal ribs 2. During the movement, the welding end of the welding carriage 8 continuously welds the weld between the T-beam 3 and the large plate 1, and through continuous welding, firmly connects the T-beam 3 and the large plate 1 together.

[0035] This welding method based on a specific welding device brings many significant benefits. First, the welding carriage 8 continuously welds along the length of the panel 4, ensuring the continuity and uniformity of the weld and reducing welding defects caused by welding interruptions or improper operation, such as incomplete welds, slag inclusions, and porosity. This greatly improves welding quality and ensures the strength and reliability of the connection between the T-beam 3 and the large plate 1, providing a solid guarantee for the overall stability of the ship's segmented grid structure. Second, the automated movement of the welding device and the state switching function of the support component 5 reduce the time and labor intensity of manual operation. The welding carriage 8 can move quickly and accurately along the weld seam and perform welding without frequent adjustments to the device position or complex positioning operations, improving the continuity and efficiency of welding operations, shortening the manufacturing cycle of ship sections, and reducing production costs. Third, the entire welding process requires minimal manual intervention; operators only need to place the welding device in the appropriate position and start the welding carriage 8 to complete the welding operation. This simple operation method reduces the skill requirements of operators, minimizes the impact of human factors on welding quality, and facilitates the standardization and normalization of welding operations. Fourth, this welding method makes full use of the structural characteristics of the welding equipment, and can adapt to the welding needs of longitudinal ribs 2, T beams 3 and large plates 1 of different specifications and spacings. It has good versatility and adaptability, and provides shipbuilding enterprises with a more flexible and efficient welding solution.

[0036] Preferably, during the welding process of the welding carriage 8, the camera 10 acquires real-time image information of the weld. 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 unqualified position and re-welds. During the welding process of the welding carriage 8 on the weld between the T-beam 3 and the large plate 1, the camera 10 is always in working condition, acquiring real-time image information of the weld. This image information includes key information such as the appearance of the weld, the state of the weld pool, the width and height of the weld, and whether there are welding defects (such as porosity, slag inclusions, cracks, etc.). The acquired image information is transmitted to the corresponding control system for analysis and judgment. When the control system determines that the weld is qualified, it issues a command to the moving component 7, which drives the panel 4 to move, so that the entire welding device (including the welding carriage 8, support 5, etc.) is transferred to the next adjacent welding station, and the welding carriage 8 continues to perform welding operations at the new station. 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 orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0040] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A welding apparatus for welding fillet welds on a lattice structure of a ship section, the lattice structure comprising a large plate (1), a plurality of longitudinal ribs (2), and a plurality of T-beams (3), wherein the plurality of longitudinal ribs (2) and the plurality of T-beams (3) are perpendicularly and intersectingly mounted on the large plate (1), and a weld is provided between the T-beams (3) and the large plate (1), characterized in that, The welding device includes: a panel (4), a support (5), a positioning component (6), a moving component (7), and a welding carriage (8). The moving component (7) is disposed on the top surface of the panel (4). The moving component (7) can slide and engage with the T-beam (3) to drive the panel (4) to move along the length direction of the T-beam (3). The support (5) is telescopically installed on the bottom surface of the panel (4). The support (5) can contact the large plate (1) to support the panel (4). The positioning component (6) is telescopically installed on the side of the panel (4) facing the T-beam (3). The positioning component (6) can be used to position and engage with the T-beam (3). The welding carriage (8) can move on the panel (4) to continuously weld the T-beam (3) and the large plate (1). The moving component (7) includes a top part protruding from the panel (4). The panel (4) has a connecting member (701) and a sliding member (702) disposed on the connecting member (701). The sliding member (702) is at least partially in contact with the top surface of the T-beam (3) and has friction. The connecting member (701) includes a support column that is vertically protruding from the panel (4) and a mounting plate that extends vertically along the top of the support column above the top surface of the T-beam (3). The sliding member (702) includes a power unit disposed in the mounting plate and a pulley disposed on the side of the mounting plate facing the T-beam (3). The pulley is connected to the power unit and abuts against the top surface of the T-beam (3). The top surface of the panel (4) is provided with a protruding plate (11) on the side away from the connecting member (701). The welding trolley (8) is provided with a top wheel (9) that slides with the protruding plate (11) so that the welding trolley (8) moves along the length direction of the protruding plate (11).

2. The welding apparatus according to claim 1, characterized in that, There are two support members (5), which are spaced apart on the bottom surface of the panel (4). 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).

3. The welding apparatus according to claim 1, characterized in that, The welding trolley (8) is equipped with a camera (10), which is used to acquire welding image information of the weld. The camera (10) is electrically connected to the welding trolley (8) and the moving component (7).

4. The welding apparatus according to claim 1, characterized in that, The support member (5) has an extended state and a retracted state. When it is in the extended state, the bottom of the support member (5) abuts against the large plate (1). When it is in the retracted state, the bottom height of the support member (5) is higher than the top surface height of the longitudinal bone (2).

5. The welding apparatus according to claim 4, characterized in that, The support member (5) is configured such that when the moving component (7) moves the panel (4), the support member (5) switches to the retracted state, and when the moving component (7) stops moving, the support member (5) switches to the extended state.

6. A welding method, characterized in that, Using the welding apparatus as described in any one of claims 1 to 5, the welding method comprises the steps of: placing the welding apparatus between two adjacent longitudinal ribs (2), moving the welding carriage (8) along the length direction of the panel (4), and continuously welding the weld seam between the T-beam (3) and the large plate (1) with the welding end of the welding carriage (8).

7. The welding method according to claim 6, characterized in that, During the welding process of the welding trolley (8), the image information of the weld is obtained in real time by 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 trolley (8) moves to the unqualified position to re-weld.

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