A device for assembling curved hull frames and railings.

Abstract

This invention relates to a device for assembling a curved hull frame and a railing. The device comprises a jig assembly for holding the curved hull frame, with an opening at its center and a railing adjustment device that mates with the jig assembly. The jig assembly includes a jig body with an arc-shaped upper surface for supporting the curved hull components. A height adjustment seat and a hydraulic jack are located below the jig body. The railing adjustment device includes a tray for supporting the railing. Below the tray are a turntable, a lateral movement mechanism, and a worm gear screw jack that mate with the tray. An external gear slewing bearing is located below the turntable to drive its rotation and adjust the tray's position. These components allow the tray to move freely in four directions, ensuring more convenient and efficient assembly between the curved hull frame and the railing, while also improving assembly precision and quality.

Description

Technical Field

[0001] This invention relates to the field of marine technology, specifically to a device for assembling a hull curved plate frame and railings. Background Technology

[0002] In existing technologies, curved hull frames are extensively used in shipbuilding. These frames are characterized by thick steel plates, large dimensions, and heavy weight; a volume of several meters square typically weighs tens of tons, and the curved plates have large openings in the center. Similarly, railings are usually several meters in diameter and several tons in weight, some with curved skirts on their outer circumference. During assembly, the railings need to be inserted into the large openings in the curved hull frames, adjusted into position, and then spot-welded to the frames for secure integration in subsequent welding processes. To improve assembly accuracy, welding quality, and efficiency, the gap between the central opening of the curved hull frame and the outer diameter of the railing must be less than 1mm, the height deviation less than 1mm, and the perpendicularity deviation less than 1mm.

[0003] Currently, the assembly of the hull curved plate frame and the railing uses a fixed jig to support the curved plate, and a crane lifts the railing into the opening in the middle of the curved plate frame. This crane lifting method is affected by the crane's precision, making it difficult to accurately adjust the position of the railing, and thus the assembly quality and efficiency are difficult to guarantee.

[0004] Therefore, it is necessary to design a device for the precise assembly of the hull curved plate frame and the railing, so that the railing can be quickly and accurately positioned in the curved plate frame to meet the needs of the production process. Summary of the Invention

[0005] The purpose of this invention is to provide an improved device for assembling hull curved plate frames and railings. Through structural improvements, the device enhances assembly precision and efficiency, improves assembly quality, and meets the needs of production processes.

[0006] To achieve the above objectives, the technical solution of the present invention is: a device for assembling a curved hull frame and a railing, characterized in that: the device for assembling a curved hull frame and a railing includes a jig device, on which the curved hull frame is placed; the jig device has an opening at its center, and a railing adjustment device that cooperates with the jig device is provided at the opening; the jig device includes a jig body, the upper surface of which is arc-shaped and used to support the curved hull components; a height-adjusting seat and a hydraulic jack are provided below the jig body; the railing adjustment device includes a tray for supporting the railing; a turntable, a transverse mechanism, and a worm gear screw jack that cooperate with the tray are provided below the tray; an external gear slewing bearing is provided below the turntable for driving the turntable to rotate and adjusting the rotation position of the tray; an upper transverse seat and a lower transverse seat are provided between the tray and the turntable; the transverse mechanism is used to drive the tray to move along the X and Y directions, and the worm gear screw jack is used to drive the tray to move along the Z direction.

[0007] Preferably, there are two transverse movement mechanisms: an X-axis transverse movement mechanism located on the turntable and a Y-axis transverse movement mechanism located on the lower transverse movement seat.

[0008] Furthermore, the X-axis lateral movement mechanism drives the lower lateral movement seat to move in the X-axis along the turntable. The turntable is provided with an X-axis guide rail that cooperates with the lower lateral movement seat, and an X-axis slider that cooperates with the X-axis guide rail. The Y-axis lateral movement mechanism drives the upper lateral movement seat to move in the Y-axis along the lower lateral movement seat. The lower lateral movement seat is provided with a Y-axis guide rail that cooperates with the upper lateral movement seat, and a Y-axis slider that cooperates with the Y-axis guide rail.

[0009] Furthermore, the transverse movement mechanism includes a first servo motor, the output end of which is connected to a displacement coupling via a first reducer. One end of the displacement coupling is connected to a displacement lead screw, and a displacement nut that mates with the displacement lead screw is provided on the displacement lead screw. The nut of the X-axis transverse movement mechanism is connected to the lower transverse movement seat, and the nut of the Y-axis transverse movement mechanism is connected to the upper transverse movement seat.

[0010] Furthermore, a second servo motor is provided on one side of the turntable. The output end of the second servo motor is connected to a pinion through a second reducer. The pinion meshes with an external gear slewing bearing. A circular seat that mates with the turntable is provided below the turntable. The circular seat is connected to the ground steel plate through a circular plate.

[0011] Furthermore, the frame body is formed by four baffles. The baffles at the head and tail are of different heights, creating a height difference. The baffles on the left and right sides are symmetrically arranged, with the upper surfaces of the left and right baffles being arc surfaces. Triangular reinforcing columns are provided between the baffles at the head and tail and the baffles on the sides. The tail baffle is provided with a hydraulic jack extension hole for placing the hydraulic jack.

[0012] Furthermore, there are four support seats, located below the four top corners of the frame. A ground steel plate is laid under every two support seats, and the support seats are connected to the ground steel plate by a base plate.

[0013] Furthermore, four sets of worm gear screw jacks are installed on the upper transverse seat. Each worm gear screw jack includes a lifting nut and a lifting screw that cooperates with the lifting nut. The lifting screw is connected to the third servo motor through a lifting coupling. The output end of the third servo motor is connected to the lifting coupling through a third reducer. The lifting nut is installed on the tray through a square nut sleeve. The tray is driven to move up and down in the Z direction by the lifting nut.

[0014] Compared with the prior art, the technical solution of the present invention not only improves the overall technical solution, but also includes many improvements in details. Specifically, it has the following beneficial effects:

[0015] The improved solution of the present invention includes a jig device for placing the curved hull frame. The jig device has an opening at its center, and a fence adjustment device that cooperates with the jig device is provided at the opening. The jig device includes a jig body, the upper surface of which is arc-shaped to support the curved hull components. A height-adjusting seat and a hydraulic jack are provided below the jig body to better fit the curved hull components with the jig body. By cooperating with the jig device and the fence adjustment device, the original method of hoisting in by a crane is changed, thereby improving the assembly accuracy and efficiency and meeting the needs of the production process.

[0016] In the technical solution of this invention, the fence assembly and adjustment device includes a tray for supporting the fence. Below the tray are a turntable, a lateral movement mechanism, and a worm gear screw jack that cooperate with the tray. Below the turntable is an external gear slewing bearing for driving the turntable to rotate and adjusting the rotational position of the tray. An upper lateral movement seat and a lower lateral movement seat are provided between the tray and the turntable. The lateral movement mechanism is used to drive the tray to move along the X and Y directions, and the worm gear screw jack is used to drive the tray to move along the Z direction. By adjusting the four degrees of freedom of the fence assembly and adjustment device, the curved plate frame and the fence can be precisely assembled, improving the assembly quality and efficiency.

[0017] In the structure of this invention, the frame body is formed by four baffles. The baffles at the head and tail are of different heights, creating a height difference. The baffles on the left and right sides are symmetrically arranged, with the upper surfaces of the left and right baffles being arc surfaces. Triangular reinforcing columns are provided between the baffles at the head and tail and the baffles on the sides. The tail baffle is provided with hydraulic jack extension holes for placing hydraulic jacks, which helps the curved hull components fit better with the arc surfaces of the frame body, allowing for adjustments to be made for the subsequent assembly of the curved hull components and railings, and improving the assembly accuracy.

[0018] The present invention has a reasonable structural design, good assembly effect, improves assembly accuracy and quality, and is easy to promote and use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the tire frame device of the present invention.

[0021] Figure 3 This is a schematic diagram of the fence installation and adjustment device of the present invention.

[0022] Figure 4 This is another structural schematic diagram of the fence installation and adjustment device of the present invention.

[0023] Figure 5 for Figure 3 A partially enlarged structural diagram of section A.

[0024] Figure 6This is a partial cross-sectional view of the fence installation and adjustment device of the present invention.

[0025] Figure label:

[0026] 1. Frame assembly, 2. Hull curved plate frame, 3. Guardrail, 4. Guardrail installation and adjustment device, 5. Frame body, 6. First bolt, 7. Height support seat, 8. Second bolt, 9. Base plate, 10. Third bolt;

[0027] 11 Hydraulic jack, 12 Fourth bolt, 13 Ground steel plate, 14 Circular ring plate, 15 Circular ring seat, 16 First screw, 17 Second screw, 18 Small gear, 19 Third screw;

[0028] 20 Retaining ring, 21 Fourth screw, 22 Second reducer, 23 Fifth screw, 24 External gear slewing bearing, 25 X-axis slider, 26 Second servo motor, 27 Sixth screw, 28 Turntable, 29 X-axis guide rail;

[0029] 30 Y-axis guide rail, 31 Y-axis slider, 32 seventh screw, 33 lower transverse sliding seat, 34 upper transverse sliding seat, 35 eighth screw, 36 worm gear screw jack, 37 lifting coupling, 38 first dust cover, 39 reducer base;

[0030] 40 Third reducer, 41 Third servo motor, 42 Tray, 43 Second dust cover, 44 Expansion sleeve, 45 Lateral movement mechanism, 46 First cover ring, 47 Ninth screw, 48 Tenth screw, 49 Nut sleeve;

[0031] 50 Lifting nut, 51 Eleventh screw, 52 Second cover ring, 53 Lifting screw, 54 First servo motor, 55 First reducer, 56 First reducer base, 57 Displacement coupling, 58 Horizontal sliding seat, 59 Bearing with seat;

[0032] 60 Third dust cover, 61 Displacement nut, 62 Displacement screw, 63 Retaining ring, 64 Twelfth screw. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This invention provides a device for assembling a curved hull frame and railings, see details below. Figure 1The difference between this and the existing technology is that the device used for assembling the curved hull frame 2 and the railing 3 includes a jig device 1, on which the curved hull frame is placed. The jig device 1 has a circular opening at its center, and a railing adjustment device 4 that cooperates with the jig device is provided at the opening. The jig device includes a jig body 5, the upper surface of which is a concave arc shape to support the curved hull components. The jig body has a height-adjusting seat 7 and a hydraulic jack 11 below it. The hydraulic jack can lift the curved hull components to make them fit better with the jig body.

[0035] Specifically, the fence assembly and adjustment device includes a pallet for supporting the fence. Below the pallet are a turntable, a lateral movement mechanism, and a worm gear screw jack that cooperate with the pallet. Below the turntable is an external gear slewing bearing for driving the turntable to rotate and adjusting the pallet's rotational position. An upper lateral movement seat and a lower lateral movement seat are located between the pallet and the turntable. The lateral movement mechanism drives the pallet to move along the X and Y directions, and the worm gear screw jack drives the pallet to move along the Z direction. These components allow the pallet to move freely in four directions, ensuring more convenient and efficient assembly between the hull curved plate frame and the fence, while also improving assembly precision and quality.

[0036] Example 1

[0037] In this embodiment, the jig frame device 1 is used to place the hull curved plate frame. The jig frame device 1 has a large circular opening at its center, and a fence adjustment device 4 that cooperates with the jig frame device is provided at the opening. The jig frame device 1 includes a jig frame body 5. The upper surface of the jig frame body is a concave arc shape with a drop at both ends, used to support the hull curved surface components. A height-adjusting seat 7 and a hydraulic jack 11 are provided below the jig frame body. The hydraulic jack is located at one end of the lower part of the jig frame body. The hydraulic jack is used to adjust the hull curved surface components to the curved surface of the jig frame body. The surface fit is better; the fence installation and adjustment device includes a tray 42 for supporting the fence 3. Below the tray is a turntable 28 that cooperates with the tray, a lateral movement mechanism and a worm gear screw jack. Below the turntable is an external gear slewing bearing 24 for driving the turntable to rotate and adjusting the rotation position of the tray 42. An upper lateral movement seat 34 and a lower lateral movement seat 33 are provided between the tray and the turntable. The lateral movement mechanism is used to drive the tray to move along the X and Y directions, and the worm gear screw jack is used to drive the tray to move along the Z direction.

[0038] Furthermore, there are two transverse movement mechanisms: an X-axis transverse movement mechanism mounted on the turntable and a Y-axis transverse movement mechanism mounted on the lower transverse movement seat. The X-axis transverse movement mechanism drives the lower transverse movement seat to move in the X-axis along the turntable. The turntable is provided with an X-axis guide rail 29 that cooperates with the lower transverse movement seat, and an X-axis slider 25 that cooperates with the X-axis guide rail 29, so that the lower transverse movement seat moves in the X-axis along the turntable. The Y-axis transverse movement mechanism drives the upper transverse movement seat to move in the Y-axis along the lower transverse movement seat. The lower transverse movement seat is provided with a Y-axis guide rail 30 that cooperates with the upper transverse movement seat, and a Y-axis slider 31 that cooperates with the Y-axis guide rail 30, so that the upper transverse movement seat moves in the Y-axis along the lower transverse movement seat.

[0039] Furthermore, both the X-axis and Y-axis lateral movement mechanisms include a first servo motor. The output end of the first servo motor is connected to a displacement coupling via a first reducer. One end of the displacement coupling is connected to a displacement lead screw, which is fitted with a displacement nut. The displacement nut of the X-axis lateral movement mechanism is connected to the lower lateral movement seat, and the displacement nut of the Y-axis lateral movement mechanism is connected to the upper lateral movement seat. The displacement nuts here are all fitted with nut sleeves. The first servo motor and the first reducer are primarily used for displacement.

[0040] During implementation, the curved plate frame is supported, positioned, and fixed by the jig frame device. The fence is suspended on the tray of the fence assembly and adjustment device. The fence is precisely adjusted into place by the electric adjustment of the horizontal, rotational, and lifting movements of the fence assembly and adjustment device. After the fence is adjusted into place, it is spot-welded to the curved plate frame, which improves efficiency.

[0041] Example 2

[0042] In this embodiment, the device for assembling the hull curved plate frame 2 and the railing 3 includes a jig device 1, on which the hull curved plate frame is placed. The jig device has an opening at its center, and a railing adjustment device 4 that cooperates with the jig device is provided at the opening. The jig device includes a jig body 5, the upper surface of which is arc-shaped and used to support the hull curved surface components. A height-adjusting seat 7 and a hydraulic jack 11 are provided below the jig body. The railing adjustment device includes a tray 42 for supporting the railing. A turntable 28, a transverse mechanism, and a worm gear screw jack that cooperate with the tray are provided below the tray. An external gear slewing bearing 24 is provided below the turntable to drive the turntable to rotate and adjust the rotation position of the tray. An upper transverse seat 34 and a lower transverse seat 33 are provided between the tray and the turntable. The transverse mechanism is used to drive the tray to move along the X and Y directions, and the worm gear screw jack is used to drive the tray to move along the Z direction.

[0043] Furthermore, a second servo motor 26 is installed on one side of the turntable. The output end of the second servo motor is connected to a pinion 18 via a second reducer. The pinion meshes with an external gear slewing bearing. A circular seat 15, which mates with the turntable, is located below the turntable. The circular seat is connected to a ground steel plate via a circular plate 14. The ground steel plate facilitates the adjustment and fixation of the mechanical device to the ground, further increasing the ground's load-bearing capacity. The second servo motor and the second reducer here are primarily used for angle control.

[0044] Furthermore, the jig body is composed of four baffles. The baffles at the bow and stern are of different heights, creating a height difference. The inner side of the higher baffle has a square support body, and the upper part of the square support body has several parallel support plates. The support plates are triangular, and the space between adjacent support plates can provide good flexible support for the curved hull frame, ensuring the fit between the curved frame and the jig body. The left and right side baffles are symmetrically arranged, and the upper surface of the left and right baffles is an arc surface. There are triangular reinforcing columns between the end baffles and the side baffles. The stern baffle has hydraulic jack extension holes for placing hydraulic jacks. By lifting two symmetrically arranged hydraulic jacks, the position between the curved frame and the jig body can be finely adjusted to ensure a better fit angle, which is more suitable for subsequent assembly and welding work.

[0045] Furthermore, there are four support seats 7, which are located under the four top corners of the frame. A ground steel plate 13 is laid under every two support seats. The support seats and the ground steel plate are connected by a foot plate, which makes the support seats more stable. The support seats make the transportation of the frame device more convenient.

[0046] Furthermore, four sets of worm gear screw jacks are mounted on the upper transverse support, evenly distributed around the pallet of the fence adjustment device. Each worm gear screw jack includes a lifting nut and a lifting screw that mates with the lifting nut. The lifting screw is connected to a third servo motor via a lifting coupling. The output end of the third servo motor is connected to the lifting coupling via a third reducer. The lifting nut is mounted on the pallet using a square nut sleeve, driving the pallet to move up and down in the Z direction. The third servo motor and the third reducer are primarily used for lifting.

[0047] Example 3

[0048] In this embodiment, Appendix Figure 2This is a schematic diagram of one embodiment of the jig frame device. It comprises a jig frame body 5, a first bolt 6, a height-adjusting seat 7, a second bolt 8, a base plate 9, a third bolt 10, two sets of hydraulic jacks 11, a fourth bolt 12, and a ground steel plate 13. The arc surface of the jig frame body 5 serves as the support surface for the curved plate frame 2, and the arc shape represents the theoretical shape of the curved plate frame. The height-adjusting seat 7 is provided for convenient transportation of the jig frame device (height restriction). The base plate 9 is placed on the ground steel plate 13, and after positioning, it is welded to the ground steel plate 13 for horizontal adjustment and fastening. The first bolt 6 and the second bolt 8 are used for connecting and fastening different parts. The third bolt 10 and the fourth bolt 12 are used for auxiliary positioning of the curved plate frame. The hydraulic jacks 11 are used to adjust the position of the curved plate frame when the misalignment between the curved plate frame and the jig frame's arc surface is too large. The ground steel plate 13 is provided to facilitate the adjustment and fixation of the mechanical device to the ground and to increase the ground's load-bearing capacity.

[0049] Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 This is a schematic diagram of one embodiment of a fence mounting device. The annular plate 14 is placed on the attached... Figure 2 The device is positioned on the ground steel plate 13 and then welded to it. The annular seat 15 is leveled and secured to the annular plate 14 by the first screw 16. The external gear slewing bearing 24 is connected to the annular seat 15 by the second screw 17. The second servo motor 26 drives the pinion 18 to rotate after being reduced in speed by the second reducer 22, thereby driving the external gear slewing bearing 24 to rotate. The turntable 28 is connected to the external gear slewing bearing 24 by the fifth screw 23. The turntable 28 and the components mounted on it all rotate with the external gear slewing bearing 24, realizing the adjustment of the rotation direction (R direction).

[0050] There are two sets of transverse movement mechanisms 45. One set is installed on the turntable 28, and the other set is installed on the lower transverse movement seat 33, used for adjustment in two horizontal directions (X and Y directions). The transverse movement mechanism 45 is driven by the first servo motor 54, which is reduced in speed by the first reducer 55 and then driven by the displacement coupling 57 to rotate the displacement screw 62, thereby driving the displacement nut 61 to move linearly. The transverse movement mechanism 45 installed on the turntable 28 drives the lower transverse movement seat 33 connected to the displacement nut 61 to move linearly. The X-axis guide rail 29 and the X-axis slider 25 are installed on the turntable 28, providing support and guidance. The transverse movement mechanism 45 installed on the lower transverse movement seat 33 drives the upper transverse movement seat 34 connected to the displacement nut 61 to move linearly. The Y-axis guide rail 30 and the Y-axis slider 31 are installed on the lower transverse movement seat 33, providing support and guidance. The worm gear screw jack 36 (4 sets) is installed on the upper transverse seat 34 by the fifth bolt 35. The third servo motor 41 is reduced in speed by the third reducer 40 and then driven by the lifting coupling 39 to rotate the lifting screw 53 of the worm gear screw jack 36. The lifting nut 50 of the worm gear screw jack 36 moves up and down. The lifting nut 50 is installed in the nut sleeve 49 and is square in shape to prevent the lifting nut 50 from rotating. The nut sleeve 49 is connected and fastened to the tray 42 by the tenth screw 48. Then the lifting nut 50 drives the tray 42 to move up and down together to achieve Z-axis adjustment.

[0051] The working process is as follows: Install and securely fix the jig frame device 1 and the fence adjustment device 4 on the ground according to the design requirements, with the fence adjustment device 4 located below the center of the jig frame device 1. Hoist the curved plate frame 2 onto the jig frame body 5 of the jig frame device 1, adjust its position, and then fix it. Activate the lifting function of the fence adjustment device 4 to raise the tray 42 on the fence adjustment device 4 to a sufficient height. Hoist the fence 3 onto the tray 42 and release the hook. Activate the horizontal movement, rotation, and lowering functions of the fence adjustment device 4 in sequence to precisely adjust the fence 3 to the accurate position. Spot weld the curved plate frame 2 and the fence 3 to secure them. The entire assembly process is complete.

[0052] The curved plate frame and fence precision assembly device in this embodiment have the following characteristics: First, the jig of the jig device is a hollow structure, supported by two arc plates with the same curvature as the curved plate frame, which facilitates the inspection of the manufacturing accuracy of the curved plate frame; Second, two sets of hydraulic jacks are installed inside the jig of the jig device, which facilitates precise fine-tuning of the position of the curved plate frame; Third, the fence precision assembly device is equipped with a tray, which facilitates the hoisting and placement of the fence; Fourth, the horizontal X and Y axis adjustments of the fence precision assembly device are both driven by servo motors through a reducer to drive the lead screw, which is convenient and has high precision; Fifth, the vertical Z axis adjustment of the fence precision assembly device is driven by four sets of servo motors to drive the worm gear screw jack, which has good lifting synchronization and high adjustment precision; Sixth, the rotational R axis adjustment of the fence precision assembly device is driven by a servo motor to drive the external gear slewing bearing, which has high adjustment precision.

[0053] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A device for assembling a curved hull frame and railings, characterized in that: The device used for assembling the hull curved plate frame and the railing includes a jig device, on which the hull curved plate frame is placed, and an opening is provided at the center of the jig device, and a railing assembly and adjustment device that cooperates with the jig device is provided at the opening. The jig assembly includes a jig body with an arc-shaped upper surface for supporting curved hull components. A height-adjusting seat and a hydraulic jack are located below the jig body. The fence assembly and adjustment device includes a tray for supporting the fence. Below the tray are a turntable, a traversing mechanism, and a worm gear screw jack that cooperate with the tray. Below the turntable is an external gear slewing bearing for driving the turntable to rotate and adjusting the rotation position of the tray. An upper transverse slide and a lower transverse slide are provided between the pallet and the turntable; The lateral movement mechanism is used to drive the pallet to move along the X and Y directions, while the worm gear screw jack is used to drive the pallet to move along the Z direction.

2. The device for assembling a curved hull frame and railings according to claim 1, characterized in that: There are two transverse movement mechanisms: an X-axis transverse movement mechanism located on the turntable and a Y-axis transverse movement mechanism located on the lower transverse movement seat.

3. The device for assembling a curved hull frame and railings according to claim 2, characterized in that: The X-axis lateral movement mechanism drives the lower lateral movement seat to move in the X-axis direction along the turntable. The turntable is equipped with an X-axis guide rail that mates with the lower lateral movement seat, and an X-axis slider that mates with the X-axis guide rail. The Y-axis lateral movement mechanism drives the upper lateral movement seat to move in the Y-axis direction along the lower lateral movement seat. The lower lateral movement seat is equipped with a Y-axis guide rail that mates with the upper lateral movement seat, and a Y-axis slider that mates with the Y-axis guide rail.

4. The device for assembling a curved hull frame and railings according to claim 3, characterized in that: The transverse movement mechanism includes a first servo motor. The output end of the first servo motor is connected to a displacement coupling through a first reducer. One end of the displacement coupling is connected to a displacement lead screw, and a displacement nut that mates with the displacement lead screw is provided on the displacement lead screw. The nut of the X-axis transverse movement mechanism is connected to the lower transverse movement seat, and the nut of the Y-axis transverse movement mechanism is connected to the upper transverse movement seat.

5. The device for assembling a curved hull frame and railings according to claim 1, characterized in that: A second servo motor is provided on one side of the turntable. The output end of the second servo motor is connected to a pinion through a second reducer. The pinion meshes with an external gear slewing bearing. A circular seat that mates with the turntable is provided below the turntable. The circular seat is connected to the ground steel plate through a circular plate.

6. The device for assembling a curved hull frame and railings according to claim 1, characterized in that: The frame is formed by four baffles. The baffles at the head and tail are of different heights, creating a height difference. The baffles on the left and right sides are symmetrically arranged, with the upper surfaces of the left and right baffles being arc surfaces. Triangular reinforcing columns are provided between the baffles at the head and tail and the baffles on the sides. The tail baffle has a hydraulic jack extension hole for placing the hydraulic jack.

7. The device for assembling a curved hull frame and railings according to claim 1, characterized in that: There are four support brackets, located at the four corners of the frame. A steel plate is laid under every two support brackets, and the support brackets are connected to the steel plate by a base plate.

8. The device for assembling a curved hull frame and railings according to claim 1, characterized in that: Four sets of worm gear screw jacks are installed on the upper transverse seat. Each worm gear screw jack includes a lifting nut and a lifting screw that cooperates with the lifting nut. The lifting screw is connected to the third servo motor through a lifting coupling. The output end of the third servo motor is connected to the lifting coupling through a third reducer. The lifting nut is installed on the tray through a square nut sleeve. The tray is driven to move up and down in the Z direction by the lifting nut.

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