A marine vessel platform plate welding tooling fixture

Abstract

This application relates to the field of welding technology and discloses a welding fixture for offshore platform plates, including a workbench and an alignment plate symmetrically and movably connected to both sides of the workbench for placing the deck and aligning two sets of decks. A reference plate is fixedly connected to one side of the alignment plate, and the alignment plate is driven by a moving component. An anti-deformation unit is respectively disposed on the alignment plate and the workbench, used to cooperate with the alignment plate to align the deck and press the deck surface. The anti-deformation unit includes a first pressing plate symmetrically installed on one side of the alignment plate for initially fixing the deck placed on the alignment plate; and a second pressing plate. This solves the problems of inaccurate positioning and cumbersome welding operations that affect efficiency in the prior art, realizes automated alignment and positioning of two sets of decks, effectively prevents deformation of the deck surface, and allows welding of the deck joints without flipping the deck.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to a welding fixture for offshore ship platform plates. Background Technology

[0002] The ship's deck is the largest flat surface area on the hull. It mainly refers to the support layer, which supports cargo or people. At the same time, the deck also plays an important role in reinforcing the hull structure, facilitating layered loading and unloading, and ensuring the strength and unsinkability of the hull.

[0003] However, during the implementation of the relevant technical solutions, at least the following technical problems were found: First, the existing process relies on manual pushing of the deck onto the welding table and manual alignment of the edges, lacking an automated alignment mechanism. This makes it impossible to achieve precise positioning between decks, resulting in high difficulty in fine-tuning and affecting welding accuracy. Furthermore, during welding, the high temperature can easily deform the deck, and the lack of an effective anti-deformation mechanism leads to quality problems in the welded product. Second, when welding the seams of the deck, it is necessary to weld not only the front but also the back. The existing welding method involves flipping the welded deck over and then welding the back. This operation not only increases the workload but also reduces welding efficiency. Summary of the Invention

[0004] This application provides a welding fixture for offshore platform plates, which solves the problems of inaccurate positioning and cumbersome welding operations that affect efficiency in the prior art. It realizes automated alignment and positioning of two sets of decks, effectively prevents deformation of the deck surface, and allows welding of the deck joints without flipping the deck.

[0005] This application provides a welding fixture for offshore platform plates, including a workbench and further comprising: an alignment plate, symmetrically and movably connected to both sides of the workbench for placing the deck and aligning two sets of decks; a reference plate is fixedly connected to one side of the alignment plate, and the alignment plate is driven by a moving component; and an anti-deformation unit, respectively disposed on the alignment plate and the workbench, for aligning the deck with the alignment plate while simultaneously pressing down on the deck surface; the anti-deformation unit includes: a first pressing plate, symmetrically installed on one side of the alignment plate, for initially securing the deck placed on the alignment plate. The system consists of: a second clamping plate, positioned on the workbench, used to align the deck in the width direction and clamp its surface after the deck stops moving; a third clamping plate, positioned on the workbench and located to one side of the second clamping plate, used to align the deck in the width direction and clamp its surface after the deck stops moving; a mating piece, positioned between the alignment plate and the workbench, used to drive the second and third clamping plates to clamp the deck surface; and a welding unit, located in the middle of the workbench, used to weld the front and back seams of two sets of decks simultaneously without flipping the deck.

[0006] Furthermore, a first fixing plate is symmetrically installed on the aligning plate, the number and position of the first fixing plate corresponding to the first pressing plate, a first elastic element is provided between the first fixing plate and the first pressing plate, and an guide plate is fixedly connected to one side of the first pressing plate; a second fixing plate is symmetrically installed on the worktable, the number and position of the second fixing plate corresponding to the second pressing plate and the third pressing plate, and a second elastic element is provided between the second fixing plate and the second pressing plate and the third pressing plate.

[0007] Furthermore, the docking component includes: a first driving plate and a second driving plate, which are respectively fixedly connected to the alignment plate, and the worktable is provided with a matching clearance groove; a first driving block and a second driving block, which are respectively disposed at the bottom of the second fixed plate and directly opposite the second pressing plate and the third pressing plate, and the first driving block and the second driving block are connected to the second fixed plate through a third elastic member, and an extension plate is fixedly connected to one side of the first driving block and the second driving block for driving the second pressing plate and the third pressing plate to press against the deck surface respectively.

[0008] Furthermore, multiple sets of guide rollers are rotatably connected inside the second and third pressure plates.

[0009] Furthermore, the moving component includes: a drive gear, rotatably mounted on one side of the workbench, and driven by a first power device; a rack, fixedly connected to one side of the alignment plate and meshing with the drive gear; and a placement groove, disposed on the alignment plate, for initially fixing the position of one straight edge of the deck.

[0010] Furthermore, the welding unit includes: a welding assembly, disposed in the middle of the workbench, for simultaneously welding the back and front sides of the two sets of deck seams; and a limiting assembly, disposed on one side of the welding assembly, for ensuring that the welding assembly is always perpendicular to the seam.

[0011] Furthermore, the welding assembly includes: an annular track fixedly connected to the worktable, and the track having toothed grooves; a movable gear rotatably connected within the annular track and meshing with the toothed grooves, the movable gear being driven by a second power device; and a welding head connected to the movable gear via a connecting plate for welding the weld seam.

[0012] Furthermore, the limiting component includes: a limiting track, fixedly connected to the annular track; and a limiting post, rotatably connected to the connecting plate, with the welding head located between the two sets of limiting posts, and the limiting post matching the limiting track.

[0013] Furthermore, a dustproof plate to prevent impurities is provided between the annular track and the limiting track.

[0014] Furthermore, a movable plate is movably connected to one side of the workbench, and the movable plate is located on one side of the two sets of opposing plates and is driven by a third power device.

[0015] The technical solution provided in this application has at least the following technical effects or advantages: This application employs an anti-deformation unit, achieving precise bilateral positioning of the deck through a reference plate and placement groove. Combined with a gear and rack drive, the symmetrical movement of the alignment plate towards the center automatically completes the alignment of the two decks, effectively avoiding misalignment and uneven gaps, and significantly improving positioning accuracy. The application utilizes first, second, and third clamping plates to form a multi-point symmetrical clamping structure, with the clamping plates serving both guiding and clamping functions. During deck movement, the plates automatically guide and, upon reaching their designated positions, switch to a strong clamping state. This simplifies the clamping process, improves operational efficiency, and effectively constrains the deck during welding, suppressing thermal deformation and warping, ensuring plate flatness. Therefore, it effectively solves the problems of inaccurate deck welding positioning and deformation caused by the lack of a clamping structure during welding.

[0016] This application utilizes a welding unit, enabling the welding head to move along the trajectory of a circular track. The circular track, combined with a double welding head design, allows for simultaneous welding of the front and back sides of the weld without overturning the deck. The limiting track and limiting posts ensure the welding head remains perpendicular to the weld, resulting in a stable welding trajectory, uniform penetration, reduced welding defects, and improved weld quality and consistency. The overall mechanical linkage structure ensures synchronized and reliable operation with a high degree of automation. Dustproof protection further reduces equipment failure rates and extends service life, making it particularly suitable for efficient, high-quality batch welding operations on ship platform plates. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application; Figure 2 This is a top view of the overall structure in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the moving part in Embodiment 1 of this application; Figure 4 for Figure 3 A schematic diagram of a structure without a deck on the central plate; Figure 5 This is a schematic diagram of the structure in Embodiment 1 of this application, showing the positive plate moving to the end with the deck attached; Figure 6 for Figure 5 A schematic diagram of the structure where the deck on the middle plate moves to the end without a deck; Figure 7 This is a schematic diagram of the structure of the positive plate in Embodiment 1 of this application; Figure 8 This is a schematic diagram of the structure of the explosion of the third pressure plate in Embodiment 1 of this application; Figure 9 This is a schematic diagram of the welding assembly in Embodiment 2 of this application; Figure 10 for Figure 9 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 100, workbench; 10, alignment plate; 11, first fixed plate; 12, first elastic element; 13, guide plate; 14, second fixed plate; 15, second elastic element; 20, reference plate; 30, first pressure plate; 40, second pressure plate; 50, third pressure plate; 2, docking piece; 21, first drive plate; 22, second drive plate; 23, clearance groove; 24, first drive block; 25, second drive block; 26, third elastic element; 27, extension plate; 28, guide roller; 3, moving part; 31, drive gear; 32, rack; 33, placement groove; 41, welding assembly; 411, annular track; 412, toothed groove; 413, moving gear; 414, welding head; 415, dustproof plate; 416, connecting plate; 42, limiting assembly; 421, limiting track; 422, limiting post; 101, moving plate. Detailed Implementation

[0019] This application discloses a welding fixture for offshore ship platform plates. The technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] To better understand the above technical solution, the following will provide a detailed explanation of the technical solution in conjunction with the accompanying drawings and specific implementation methods. Example

[0021] Reference Figures 1-3 and Figure 6 A welding fixture for a marine vessel platform plate includes a workbench 100 and an alignment plate 10 symmetrically and movably connected to both sides of the workbench 100 for placing the deck and aligning two sets of decks. A reference plate 20 is fixedly connected to one side of the alignment plate 10, and the alignment plate 10 is driven by a moving part 3. The alignment plate 10 and the workbench 10 are respectively provided with anti-deformation units for aligning the deck with the alignment plate 10 and pressing the deck surface. The anti-deformation unit includes a first pressing plate 30 symmetrically installed on one side of the alignment plate 10 for initially fixing the deck placed on the alignment plate 10. The workbench 100 is provided with a second pressing plate 40 for pressing the surface of the deck after it has been aligned in the width direction and the deck has stopped moving. The workbench 100 and located on one side of the second pressing plate 40 are provided with a third pressing plate 50 for pressing the surface of the deck after it has been aligned in the width direction and the deck has stopped moving. A docking part 2 is provided between the alignment plate 10 and the workbench 100 for driving the second pressing plate 40 and the third pressing plate 50 to press the surface of the deck. The first fixing plate 11 is symmetrically installed on the aligning plate 10. The number and position of the first fixing plate 11 correspond to the first pressing plate 30. A first elastic element 12 is provided between the first fixing plate 11 and the first pressing plate 30. The first elastic element 12 is preferably a spring. An guide plate 13 is fixedly connected to one side of the first pressing plate 30. The workbench 100 is symmetrically equipped with second fixed plates 14. The number and position of the second fixed plates 14 correspond to the second pressure plate 40 and the third pressure plate 50. A second elastic element 15 is provided between the second fixed plate 14 and the second pressure plate 40 and the third pressure plate 50. The second elastic element 15 is preferably a spring. Multiple sets of guide rollers 28 are rotatably connected inside the second pressure plate 40 and the third pressure plate 50.

[0022] Reference Figures 1-2 and Figures 4-6 The docking member 2 includes a first drive plate 21 and a second drive plate 22 that are fixedly connected to the alignment plate 10, and the workbench 100 is provided with a matching clearance groove 23. The bottom of the second fixing plate 14 is provided with a first drive block 24 and a second drive block 25 that are respectively positioned opposite the second pressing plate 40 and the third pressing plate 50. The first drive block 24 and the second drive block 25 are connected to the second fixing plate 14 by a third elastic member 26, which is preferably a spring. An extension plate 27 for driving the second pressing plate 40 and the third pressing plate 50 to press against the deck surface is fixedly connected to one side of the first drive block 24 and the second drive block 25. The moving part 3 includes a drive gear 31 rotatably mounted on one side of the workbench 100, and the drive gear 31 is driven by a first power device, preferably a motor. A rack 32 is fixedly connected to one side of the plate 10, and the rack 32 meshes with the drive gear 31. A placement groove 33 is provided on the plate 10 for initially fixing the position of one straight edge of the deck. The placement groove 33 is located in the space enclosed by the reference plate 20 and the rack 32, and the height of the placement groove 33 is lower than the height of the rack 32 and the reference plate 20. This allows the deck to be placed with one side of the reference plate 20 as a reference, so that the positions of the two vertical edges of the deck are determined, thus facilitating positioning. A movable plate 101 is movably connected to one side of the workbench 100. The movable plate 101 is located on one side of the two sets of opposing plates 10 and is driven by a third power device, preferably a telescopic rod. During welding, the hoisted deck enters from one side of the alignment plate 10. The guide plate 13 facilitates the deck's entry into the bottom of the first pressure plate 30. Simultaneously, one vertical edge of the deck is inserted into the placement groove 33 and fits against the reference plate 20 and the connection between the alignment plate 10 and the rack 32, thus completing the initial fixation of the deck's position. Under the elastic action of the first elastic member 12, the first pressure plate 30 presses the deck against the alignment plate 10 to prevent displacement as the alignment plate 10 moves. At the same time, the moving plate 101 further fixes the deck. At this time, the drive gear 31, driven by the first power device, drives the rack 32 to move. The movement of the rack 32 will cause the alignment plate 10 to move together. During the movement, the alignment plate 10 will move within the clearance groove 23 until the side of the deck contacts the second pressure plate 40 first. At this time, the second pressure plate 40 contacts the deck first, and under the action of the second elastic member 15, the second pressure plate 40 continues to guide the other side of the deck, further positioning the deck. As the alignment plate 10 continues to move, it drives the first drive plate 21 and the second drive plate 22 to move together. At this time, the second pressure plate 40 and the third pressure plate 50... The function of both is to align and position the side of the deck until the second drive plate 22 moves to the bottom of the second drive block 25. At this time, the first drive plate 21 also moves to the bottom of the first drive block 24. Both drive plates gradually come into contact with the drive block, thereby pushing the drive block to move in the direction of compressing the third elastic member 26. At this time, the extension plate 27 pushes the second pressing plate 40 and the third pressing plate 50 forward, so that the second pressing plate 40 and the third pressing plate 50 change from the initial guiding function to the pressing function. At this time, the drive gear 31 also stops moving. After it stops moving, the moving plate 101 is driven by the third power device to fix the position of the deck again. It should be noted that the second pressure plate 40 is positioned further back on the worktable 100 than the third pressure plate 50, and the length of the first drive plate 21 is longer than the length of the second drive plate 22. (See attached diagram) Figure 7 The second drive plate 22 is located at the foremost side of the moving path of the positive plate 10. During operation, when the second drive plate 22 passes the position of the second pressure plate 40, it does not contact the first drive block 24, so as not to squeeze the third elastic member 26. The second pressure plate 40 and the rotating roller continue to guide and transport the deck until the first drive plate 21 moves to the position of the first drive block 24. The first drive plate 21 contacts the first drive block 24, thereby pushing the first drive block 24 to move in the direction of squeezing the third elastic member 26. At the same time, the extension plate 27 pushes in the direction of stretching the second elastic member 15, so that the second pressure plate 40 changes from a guiding function to a pressing function, which facilitates the subsequent welding work. The length of the first drive plate 21 is just enough to contact the first drive block 24, and the length of the second drive plate 22 is just enough to contact the second drive block 25. Thus, the extension plate 27 extends the second pressure plate 40 and the third pressure plate 50 respectively to symmetrically press the deck on one side relative to the first pressure plate 30. Example

[0023] Reference Figures 1-2 and Figures 9-10The workbench 100 is provided with a welding unit in the middle for welding the front and back seams of two sets of decks simultaneously without flipping the deck. The welding unit includes a welding component 41 located in the middle of the workbench 100 for welding the back and front of the two sets of deck seams simultaneously. A limiting component 42 is provided on one side of the welding component 41 to keep the welding component 41 perpendicular to the seam. The welding assembly 41 includes an annular track 411 fixedly connected to the workbench 100. The annular track 411 is a track with a converging connection, and the track of the annular track 411 is connected with a toothed groove 412. A movable gear 413 is rotatably connected inside the annular track 411. The movable gear 413 meshes with the toothed groove 412, and the movable gear 413 is driven by a second power device, preferably an electric motor. A limiting groove matching the annular track 411 is also provided between the second power device and the annular track 411. The second power device is installed in the limiting groove of the annular track 411 through a limiting plate. During the operation of the movable gear 413, the limiting plate will move together with the movable gear 413 in the limiting groove. This is the prior art and is not shown in the figure. The movable gear 413 is connected to a welding head 414 for welding the weld seam through a connecting plate 416. It should be noted that there are two sets of welding heads 414, which are set at opposite corners of the annular track 411. This helps the two welding heads 414 to exchange positions within one operating cycle when performing bottom and top welding work respectively, and also improves efficiency. The limiting component 42 includes a limiting rail 421 fixedly connected to the annular rail 411, a limiting post 422 rotatably connected to the connecting plate 416, and the welding head 414 located between two sets of limiting posts 422. The limiting post 422 matches the limiting rail 421. A dustproof plate 415 is provided between the annular rail 411 and the limiting rail 421 to prevent impurities. During welding operations, the moving gear 413 moves along the circular track 411 under the drive of the second power unit. The straight section of the circular track 411 is the trajectory that allows the welding head 414 to contact the weld seam, thus enabling the welding head 414 to work. After working on one side, the two sets of welding heads 414 will switch to each other's initial positions. In order to ensure that the welding head 414 is always in a position perpendicular to the weld seam, a limiting track 421 is used, and limiting posts 422 are set on both sides of the welding head 414, so that the welding head 414 always faces the weld seam during operation. In order to avoid contaminating the circular track 411, a dustproof plate 415 is also set between the limiting track 421 and the circular track 411.

[0024] How this application works: The deck is placed into the alignment plate 10, and the straight edges on both sides are positioned by the reference plate 20 and the placement groove 33; the first pressing plate 30 automatically and initially presses the deck under the action of the first elastic member 12 to prevent displacement. The alignment plate 10 moves synchronously to find the center, and the drive gear 31 drives the rack 32 to move the two alignment plates 10 symmetrically toward the center of the worktable 100. During the movement, the side of the plate first contacts the second pressure plate 40 and the guide roller 28 to complete the automatic centering in the width direction. When the holding state is switched, the first drive plate 21 and the second drive plate 22 are moved by the positive plate 10, and the first drive block 24 and the second drive block 25 are pressed in sequence, compressing the third elastic element 26. The second and third holding plates 50 are pushed out through the extension plate 27, and the guide is changed to strong holding, so that the deck is firmly fixed on the worktable 100.

[0025] The double-sided symmetrical pressing prevents deformation. The first, second and third pressing plates 50 form multi-point symmetrical pressing, which, together with the positioning of the alignment plate 10, realizes the integration of deck alignment, pressing and deformation prevention, ensuring that the joint is flat and the edges are not misaligned. Double-sided synchronous welding: The moving gear 413 moves along the circular track 411, driving two sets of welding heads 414 to weld the front and back of the deck joint simultaneously on a straight section. The limiting track 421 and the limiting post 422 ensure that the welding head 414 is always perpendicular to the weld, thus ensuring the welding quality.

[0026] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0027] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A welding fixture for offshore platform plates, comprising a worktable (100), characterized in that, Also includes: The alignment plate (10) is symmetrically and movably connected to both sides of the workbench (100) for placing the deck and aligning the two sets of decks. A reference plate (20) is fixedly connected to one side of the alignment plate (10). The alignment plate (10) is driven by a moving part (3). Anti-deformation units are respectively installed on the alignment plate (10) and the worktable (100) to cooperate with the alignment plate (10) to align the deck and press the deck surface; The anti-deformation unit includes: The first pressure plate (30) is symmetrically installed on one side of the aligning plate (10) to initially fix the deck placed on the aligning plate (10); The second pressing plate (40) is set on the workbench (100) and is used to press the surface of the deck after it has been aligned in the width direction and stopped moving. The third pressing plate (50) is set on the workbench (100) and located on one side of the second pressing plate (40). It is used to align the width of the deck and press its surface after the deck stops moving. The docking part (2) is located between the alignment plate (10) and the worktable (100) and is used to drive the second pressing plate (40) and the third pressing plate (50) to press the surface of the deck. The welding unit, located in the middle of the workbench (100), is used to weld the front and back seams of two sets of decks simultaneously without flipping the deck.

2. The welding fixture for offshore platform plates as described in claim 1, characterized in that, The first fixing plate (11) is symmetrically installed on the aligning plate (10). The number and position of the first fixing plate (11) correspond to the first pressing plate (30). A first elastic element (12) is provided between the first fixing plate (11) and the first pressing plate (30). An inlet plate (13) is fixedly connected to one side of the first pressing plate (30). The workbench (100) is symmetrically equipped with a second fixing plate (14). The number and position of the second fixing plate (14) correspond to the second pressing plate (40) and the third pressing plate (50). A second elastic element (15) is provided between the second fixing plate (14) and the second pressing plate (40) and the third pressing plate (50).

3. The welding fixture for offshore platform plates as described in claim 2, characterized in that, The docking component (2) includes: The first drive plate (21) and the second drive plate (22) are fixedly connected to the alignment plate (10), and the worktable (100) is provided with a matching clearance groove (23). The first drive block (24) and the second drive block (25) are respectively disposed at the bottom of the second fixed plate (14) and directly opposite the second pressure plate (40) and the third pressure plate (50). The first drive block (24) and the second drive block (25) are connected to the second fixed plate (14) by a third elastic member (26). An extension plate (27) is fixedly connected to one side of the first drive block (24) and the second drive block (25) for driving the second pressure plate (40) and the third pressure plate (50) to press against the deck surface.

4. The welding fixture for offshore platform plates as described in claim 1, characterized in that, Multiple sets of guide rollers (28) are rotatably connected inside the second pressure plate (40) and the third pressure plate (50).

5. The welding fixture for offshore platform plates as described in claim 1, characterized in that, The movable component (3) includes: The drive gear (31) is rotatably mounted on one side of the worktable (100), and the drive gear (31) is driven by the first power device; The rack (32) is fixedly connected to one side of the counter plate (10) and meshes with the drive gear (31); The placement groove (33) is set on the alignment plate (10) and is used to initially fix the position of one straight edge of the deck.

6. The welding fixture for offshore platform plates as described in claim 1, characterized in that, The welding unit includes: Welding assembly (41), located in the middle of workbench (100), is used to simultaneously weld the back and front sides of two sets of deck joints; A limiting component (42) is provided on one side of the welding component (41) to ensure that the welding component (41) is always perpendicular to the seam.

7. The welding fixture for offshore platform plates as described in claim 6, characterized in that, The welding assembly (41) includes: A circular track (411) is fixedly connected to the workbench (100), and the track of the circular track (411) is connected with a toothed groove (412). The movable gear (413) is rotatably connected in the annular track (411) and meshes with the tooth groove (412). The movable gear (413) is driven by a second power device. The welding head (414) is connected to the moving gear (413) via the connecting plate (416) and is used to weld the weld seam.

8. The welding fixture for offshore platform plates as described in claim 7, characterized in that, The limiting component (42) includes: The limiting track (421) is fixedly connected to the circular track (411); The limiting post (422) is rotatably connected to the connecting plate (416), and the welding head (414) is located between the two sets of limiting posts (422), and the limiting post (422) matches the limiting track (421).

9. A welding fixture for offshore platform plates as described in claim 8, characterized in that, A dustproof plate (415) to prevent impurities is provided between the annular track (411) and the limiting track (421).

10. A welding fixture for offshore platform plates as described in claim 1, characterized in that, A movable plate (101) is movably connected to one side of the workbench (100). The movable plate (101) is located on one side of the two sets of opposing plates (10) and is driven by a third power device.

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