Modular ship section welding positioning tooling

Abstract

The application relates to the ship deck welding technical field, in particular to a modular ship section welding positioning tool, which comprises a base plate, a group of support columns are fixedly installed at the upper end of the deck base plate, a fixing frame is rotationally connected between the support columns, load-bearing plates are arranged at the left and right ends of the fixing frame, fixing plates are installed at the upper ends of the load-bearing plates, moving frames are slidably connected to the fixing plates, support frames are fixedly installed at the upper ends of the moving frames, second lead screws are threadedly connected to the support frames, pressing plates are fixedly installed at the lower ends of the second lead screws, a hydraulic rod is fixedly installed at the upper end of the deck base plate, a horizontal plate is rotationally connected to the upper end of the hydraulic rod through a hinge, the upper end of the horizontal plate is fixedly connected with the fixing frame, the upward stretching of the hydraulic rod lifts up the fixing frame through the horizontal plate, and the hydraulic rod is slidably connected with a third sliding groove through a sliding block; when the fixing frame rotates, the sliding block and the third sliding groove are used for giving way to avoid the interference of the fixing frame on the hydraulic rod during rotation.

Description

Technical Field

[0001] This utility model relates to the field of ship deck welding technology, specifically a modular ship section welding positioning tool. Background Technology

[0002] Floating production storage and offloading (FPSO) vessels are key facilities for offshore oil and gas development, primarily used for the extraction, processing, storage, and transportation of oil, natural gas, and other energy resources at sea. The deck is a crucial component of the hull, a planar structure above the inner bottom plate used to cover the ship's interior space. Composed of plates and a frame, the deck plays a vital role in ensuring the hull's strength and unsinkability. Before being put into service, steel ship decks require welding to form a monolithic structure from the steel plates.

[0003] However, the existing modular ship section welding positioning fixture cannot rotate the deck to adjust the angle, which makes it inconvenient for operators to perform double-sided welding on the deck, thus failing to improve the welding quality of the deck. Therefore, this application provides a modular ship section welding positioning fixture to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this utility model is to provide a modular welding and positioning fixture for ship sections to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular ship section welding positioning fixture, comprising a base plate, a set of support columns fixedly installed on the upper end of the base plate, a fixed frame rotatably connected between the support columns, a set of load-bearing plates provided at both ends of the fixed frame, a fixed plate fixedly installed on the upper end of the load-bearing plates, a set of movable frames slidably connected to each set of fixed plates, a support frame fixedly installed on the upper end of each set of movable frames, a second lead screw connected to the support frame by a thread, a pressure plate fixedly installed on the lower end of the second lead screw, a hydraulic rod fixedly installed on the upper end of the base plate, a horizontal plate rotatably connected to the upper end of the hydraulic rod by a hinge, and the upper end of the horizontal plate fixedly connected to the fixed frame.

[0006] As a further embodiment of this utility model: the lower end of the horizontal plate is provided with a third sliding groove, and a slider is slidably connected inside the third sliding groove. The lower end of the slider is rotatably connected to the output end of the hydraulic rod through a hinge. The hydraulic rod is mounted on the base plate at a forward tilt.

[0007] As a further embodiment of this utility model: the fixed plate is H-shaped, the movable frame is C-shaped, and the fixed plate and the movable frame are slidably connected by a snap-fit ​​mechanism.

[0008] As a further embodiment of this utility model: the upper end of the fixed plate is provided with a second sliding groove, and a third lead screw is rotatably connected inside the second sliding groove. The front and rear ends of the third lead screw are bidirectional threaded lead screws. The lower end of the movable frame is fixedly installed with a limiting plate, which is slidably connected inside the second sliding groove and threadedly connected to the third lead screw.

[0009] As a further embodiment of this utility model: the fixing frame is U-shaped, and the inner sides of both the front and rear ends of the fixing frame are provided with first sliding grooves. Both the front and rear ends of the load-bearing plate are fixedly installed with connecting blocks, and are slidably connected to the first sliding grooves through the connecting blocks. The first sliding groove is rotatably connected with a first lead screw, and the left and right ends of the first lead screw pass through and are threadedly connected to the connecting blocks.

[0010] As a further embodiment of this utility model: the two ends of the first lead screw are bidirectional threaded lead screws, a motor is fixedly installed on the right end of the fixing frame, the output end of the motor is rotatably connected to the fixing frame, two links are fixedly installed on the output end of the motor, sprockets are fixedly installed on the right end of the first lead screw, the sprockets fixedly installed on the first lead screws on both sides are staggered and aligned with the output end of the motor, and the sprockets between the output end of the motor and the first lead screw are connected by a chain.

[0011] As a further embodiment of this utility model: buffer columns are fixedly installed on both sides of the rear end of the fixed frame, and telescopic rods are slidably connected inside the buffer columns, with springs fixedly installed between the telescopic rods and the buffer columns.

[0012] As a further embodiment of this utility model: a support plate is fixedly installed at the upper center line of the fixed frame, a support seat is fixedly installed at the upper end of the support plate, and a ball head is rotatably connected to the upper end of the support seat.

[0013] As a further embodiment of this utility model: a calibration mechanism is fixedly installed on both the support plate and the fixing plate. The calibration mechanism includes a fixed frame, and a positioning wheel is rotatably connected inside the fixed frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the two decks are respectively placed on the movable frames of the fixing mechanisms at the left and right ends at the rear end and pushed forward. The front end of the deck moves to the rear end of the positioning wheel and makes contact, thereby aligning the two decks. Furthermore, manually rotating the first turntable moves the second lead screw downward, and the second lead screw clamps and fixes the deck through the pressure plate at the lower end. This prevents the deck from shifting during welding, which could lead to inaccurate welding.

[0015] In addition, by manually rotating the turntable, the turntable drives the third lead screw to rotate, which can simultaneously move the front and rear moving frames towards the middle or outward, thereby achieving the effect of fixing decks of different sizes.

[0016] In addition, by extending the hydraulic rod upwards, the fixing frame is lifted by the slider and the cross plate, causing the lower end face of the deck to rotate at a certain angle. This provides more room for maneuver when welding the lower end face of the deck, thus making the welding process faster. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a modular ship section welding positioning fixture structure according to the present invention; Figure 2 This is a schematic diagram of the fixing mechanism in this utility model; Figure 3 This is a schematic cross-sectional view of the fixing frame in this utility model; Figure 4 This is a schematic diagram of the left sectional view of the fixing frame in this utility model; Figure 5 This is a schematic diagram of the positional relationship of the hydraulic rods in this utility model; The correspondence between the labels and component names in the attached figures is as follows: 1. Base plate; 11. Support column; 2. Fixing frame; 21. First slide groove; 22. First lead screw; 23. Motor; 24. Sprocket; 25. Chain; 26. Load-bearing plate; 3. Fixing plate; 31. Moving frame; 32. Support frame; 33. Second lead screw; 34. Pressure plate; 4. Support plate; 41. Support base; 42. Ball head; 5. Second slide groove; 51. Third lead screw; 52. Limiting plate; 6. Horizontal plate; 61. Third slide groove; 62. Slider; 63. Hydraulic rod; 7. Fixing frame; 71. Positioning wheel; 8. Buffer column; 81. Spring; 82. Telescopic rod; Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0019] refer to Figure 1 It is a modular welding and positioning fixture for ship sections, such as... Figure 3 and Figure 4A set of support columns 11 are fixedly installed on the upper end of the substrate 1 shown. A fixed frame 2 is rotatably connected between the support columns 11. The fixed frame 2 is U-shaped. The front and rear ends of the fixed frame 2 are provided with a first sliding groove 21 on the inward side. A first lead screw 22 is rotatably connected inside the first sliding groove 21. The first lead screw 22 is a bidirectional threaded lead screw with mirror symmetry. A motor 23 is fixedly installed on the right end of the fixed frame 2. The output end of the motor 23 extends into the interior of the fixed frame 2 and rotates. A set of sprockets 24 distributed front and rear are fixedly installed on the output end of the motor 23. Another set of sprockets 24 is fixedly installed on the right end of both sets of first lead screws 22. The sprockets 24 on the right end of the two sets of first lead screws 22 are staggered. The staggered sprockets 24 are aligned with the two sprockets 24 at the output end of the motor 23. The sprockets 24 on the right end of the first lead screws 22 and the sprockets 24 at the output end of the motor 23 are rotatably connected by a chain 25. Load-bearing plates 26 are provided on both the left and right sides of the fixed frame 2. Connecting blocks are fixedly installed at both the front and rear ends of the load-bearing plates 26, and the load-bearing plates 26 are slidably connected inside the first slide groove 21 through the connecting blocks. The connecting blocks are threadedly connected to the first lead screw 22. When the motor 23 rotates, it drives the first lead screw 22 to rotate through the sprocket 24 and the chain 25. Since the two first lead screws 22 are bidirectional threaded lead screws that are mirror-symmetrically distributed, the rotation of the first lead screw 22 causes the load-bearing plates 26 at both ends of the fixed frame 2 to move towards the middle through the threads.

[0020] like Figure 2 and Figure 4 As shown, a fixing mechanism is provided at the upper end of the load-bearing plate 26. The fixing mechanism includes a fixing plate 3 fixedly installed at the upper end of the load-bearing plate 26. The fixing plate 3 is H-shaped, and its front and rear ends are located at the upper end of the fixing frame 2. A set of symmetrically distributed movable frames 31 are slidably connected to the fixing plate 3. The movable frames 31 are C-shaped and are slidably connected to the fixing plate 3 by snap-fit. An L-shaped support frame 32 is fixedly installed at the upper end of the movable frame 31. A second lead screw 33 is threadedly connected to the upper end of the support frame 32. A first turntable is fixedly installed at the upper end of the second lead screw 33, and a pressure plate 34 is fixedly installed at the lower end of the second lead screw 33. The two decks are placed on the movable frames 31 at the left and right ends, respectively. By manually rotating the first turntable, the second lead screw 33 is rotated. When the second lead screw 33 rotates, the pressure plate 34 moves up or down. When the pressure plate 34 moves down, it clamps and fixes the deck. After the fixing mechanisms at both ends secure the deck with pressure plates 34, the load-bearing plate 26 is moved towards the center by the motor 23 and the first lead screw 22. When the two decks are close together and aligned, they are welded together by electric welding. This avoids the two separate decks shifting or having poor alignment accuracy during welding, which would require re-aligning the decks, reducing welding efficiency, or the deck shifting going unnoticed, resulting in substandard welded deck quality.

[0021] Preferably, a support plate 4 is fixedly installed at the upper centerline of the fixed frame 2, and several support seats 41 are fixedly installed on the left and right sides of the upper end of the support plate 4. Each support seat 41 is rotatably connected to a ball head 42. When the deck is placed on the movable frame 31 from behind the fixed frame 2 and pushed forward, the inner end of the deck is located above the ball head 42. The ball head 42 supports the inner end of the deck, and because the ball head 42 is rotatably connected to the support seat 41, the deck moves more quickly and effortlessly. At the same time, the inner ends of the two separate decks are supported by the ball head 42, ensuring that the inner ends of the decks will not bend due to their own weight after docking, thus preventing inaccurate docking.

[0022] Preferably, a second groove 5 is provided at the centerline of each fixed plate 3, and a third lead screw 51 is rotatably connected at the centerline of the second groove 5. The third lead screw 51 is a bidirectional threaded rod, and its rear end extends to the outside of the fixed plate 3. A second turntable is fixedly installed at the rear end of the third lead screw 51. A limit plate 52 is fixedly installed at the lower end of each movable frame 31. The limit plate 52 slides inside the second groove 5, and the movable frame 31 is threadedly connected to the third lead screw 51. The turntable is manually rotated to rotate the third lead screw 51. Due to its bidirectional threaded rod characteristics, the third lead screw 51 ensures that the movable frames 31 at both ends move towards the middle or outwards simultaneously when rotating. This achieves the effect of fixing decks of different widths. By limiting the movable frame 31 with the third lead screw 51, the problem of the rear movable frame 31 moving forward synchronously with the deck when the deck is placed on the movable frame 31 and pushed forward for installation is avoided. This achieves the effect of symmetrical fixing of the deck by the two movable frames 31 and uniform force distribution.

[0023] However, the above problems include the inability of the fixing frame 2 to rotate and adjust the welding angle of the deck. This makes it inconvenient for operators to perform double-sided welding on the deck, thus reducing the welding quality of the deck. Therefore, this application also proposes the following improvements.

[0024] Specifically, such as Figure 5As shown, a horizontal plate 6 is fixedly installed at the lower end of the fixed frame 2, located eccentrically on the support plate 4. A third groove 61 is provided at the lower end of the horizontal plate 6, and a slider 62 is slidably connected inside the third groove 61. A hydraulic rod 63 is provided at the lower end of the horizontal plate 6, and the hydraulic rod 63 is obliquely fixed to the base plate 1. The upper end of the hydraulic rod 63 is rotatably connected to the slider 62 via a hinge. When the hydraulic rod 63 extends, the fixed frame 2 flips upward via a set of support columns 11 at its front end through the slider 62 and the horizontal plate 6. The fixed frame 2 performs a circular motion during flipping. When the hydraulic rod 63 rises and falls, it slides within the third groove 61 through the slider 62 to make room. When the fixed frame 2 rotates clockwise, the lower end of the deck flips upward, providing more operating space for workers to weld the lower end of the deck, simplifying the welding operation, and thus enabling welding of both sides of the deck, increasing the welding strength.

[0025] Preferably, calibration mechanisms are fixedly installed on the upper right side of the fixed plate 3 and the upper right side of the support plate 4. Each calibration mechanism includes three fixed frames 7 located on the same extension line, with the inner end face of the fixed frame 7 aligned with the inner end face of the fixed frame 2 on the same horizontal line. Several positioning wheels 71 are rotatably connected inside the fixed frame 7. When the two decks are placed on the movable frames 31 on the left and right fixed mechanisms and pushed forward, the front ends of the decks contact the positioning wheels 71, placing the front ends of the two decks on the same extension line. This achieves the calibration effect. Furthermore, when the two decks move towards the center, the front ends of the decks rotatably connect with the positioning wheels 71 on the support plate 4, reducing friction between the decks and the positioning wheels 71, making the movement of the fixed plate 3 smoother.

[0026] Preferably, a buffer column 8 is fixedly installed at the rear end of the fixed frame 2. A telescopic rod 82 is slidably connected inside the buffer column 8. A spring 81 is fixedly installed between the telescopic rod 82 and the buffer column 8. When the fixed frame 2 flips from top to bottom, it contacts the base plate 1 through the telescopic rod 82 and plays a supporting role. At the same time, the spring 81 provides buffering to prevent the fixed frame 2 from being impacted by excessive force when it moves downward.

[0027] Preferably, a welding hole is provided at the center line of the support plate 4. When the lower end of the deck is flipped upward, the deck is welded through the welding hole, thereby avoiding the inability to weld the support plate 4 because it is located at the welding point of the deck.

[0028] Working principle: The two decks are placed on the movable frames 31 of the left and right end fixing mechanisms from the rear end and pushed forward. The front ends of the decks move to the rear end of the positioning wheels 71 and make contact, thus aligning the two decks. The second lead screw 33 is moved downwards by manually rotating the first turntable, and the second lead screw 33 clamps and fixes the decks through the lower pressure plate 34. The motor 23 is started, and it drives the first lead screw 22 to rotate through the sprocket 24 and chain 25. As the first lead screw 22 rotates, it moves the decks fixed on the front and rear fixing mechanisms towards the center until the inner ends of the two decks contact each other. At this point, the two decks can be welded together.

[0029] Furthermore, the turntable can be manually rotated, which drives the third lead screw 51 to rotate. The third lead screw 51 can drive the movable frame 31 to move towards the center or outward, thereby fixing decks of different sizes.

[0030] The upward extension of the hydraulic rod 63 lifts the fixing frame 2 through the horizontal plate 6, and the hydraulic rod 63 is slidably connected to the third slide groove 61 through the slider 62. When the fixing frame 2 rotates, the slider 62 and the third slide groove 61 make way to avoid the fixing frame 2 interfering with the hydraulic rod 63 when rotating.

[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A modular welding and positioning fixture for ship sections, comprising a base plate (1), characterized in that, A set of support columns (11) is fixedly installed on the upper end of the substrate (1). A fixed frame (2) is rotatably connected between the support columns (11). A set of load-bearing plates (26) is provided on both the left and right ends of the fixed frame (2). A fixed plate (3) is fixedly installed on the upper end of the load-bearing plate (26). A set of movable frames (31) is slidably connected on each set of fixed plates (3). A support frame (32) is fixedly installed on the upper end of each set of movable frames (31). A second lead screw (33) is threadedly connected to the support frame (32). A pressure plate (34) is fixedly installed on the lower end of the second lead screw (33). A hydraulic rod (63) is fixedly installed on the upper end of the substrate (1). A horizontal plate (6) is rotatably connected to the upper end of the hydraulic rod (63) through a hinge. The upper end of the horizontal plate (6) is fixedly connected to the fixed frame (2).

2. The modular ship section welding positioning fixture according to claim 1, characterized in that, The lower end of the horizontal plate (6) is provided with a third sliding groove (61), and a slider (62) is slidably connected inside the third sliding groove (61). The lower end of the slider (62) is rotatably connected to the output end of the hydraulic rod (63) through a hinge. The hydraulic rod (63) is mounted on the base plate (1) at a forward tilt.

3. The modular ship section welding positioning fixture according to claim 1, characterized in that, The fixed plate (3) is H-shaped, and the movable frame (31) is C-shaped. The fixed plate (3) and the movable frame (31) are slidably connected by a snap-fit ​​method.

4. The modular ship section welding positioning fixture according to claim 1, characterized in that, The upper end of the fixed plate (3) is provided with a second sliding groove (5), and a third lead screw (51) is rotatably connected inside the second sliding groove (5). The front and rear ends of the third lead screw (51) are bidirectional threaded lead screws. The lower end of the movable frame (31) is fixedly installed with a limiting plate (52). The limiting plate (52) is slidably connected inside the second sliding groove (5) and threadedly connected to the third lead screw (51).

5. The modular ship section welding positioning fixture according to claim 1, characterized in that, The fixing frame (2) is U-shaped. The inner sides of both the front and rear ends of the fixing frame (2) are provided with first sliding grooves (21). Both the front and rear ends of the load-bearing plate (26) are fixedly installed with connecting blocks, which are slidably connected to the first sliding grooves (21) through the connecting blocks. The first sliding groove (21) is rotatably connected with a first lead screw (22). The left and right ends of the first lead screw (22) pass through the connecting blocks and are threadedly connected.

6. The modular ship section welding positioning fixture according to claim 5, characterized in that, The first lead screw (22) has two bidirectional threaded lead screws at both ends. A motor (23) is fixedly installed on the right end of the fixed frame (2). The output end of the motor (23) is rotatably connected to the fixed frame (2). Two sprockets (24) are fixedly installed on the output end of the motor (23). Sprockets (24) are fixedly installed on the right end of the first lead screw (22). The sprockets (24) fixedly installed on the first lead screw (22) on both sides are staggered and aligned with the output end of the motor (23). The sprockets (24) between the output end of the motor (23) and the first lead screw (22) are connected by a chain (25).

7. The modular ship section welding positioning fixture according to claim 1, characterized in that, The rear sides of the fixed frame (2) are fixedly installed with buffer columns (8), and the buffer columns (8) are slidably connected with telescopic rods (82). A spring (81) is fixedly installed between the telescopic rods (82) and the buffer columns (8).

8. The modular ship section welding positioning fixture according to claim 1, characterized in that, A support plate (4) is fixedly installed at the upper center line of the fixed frame (2), and a support seat (41) is fixedly installed at the upper end of the support plate (4). A ball head (42) is rotatably connected to the upper end of the support seat (41).

9. A modular ship section welding positioning fixture according to claim 8, characterized in that, A calibration mechanism is fixedly installed on both the support plate (4) and the fixing plate (3). The calibration mechanism includes a fixing frame (7), and a positioning wheel (71) is rotatably connected inside the fixing frame (7).

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