A welding method for the curved outer plate of a ship

Abstract

This application relates to the field of shipbuilding. A welding method for the curved outer plate of a ship includes selecting the number of anti-deformation fixtures according to the dimensions and transporting the anti-deformation fixtures to the designated position under the panel; jacking up the panel seam; adjusting the height of the anti-deformation fixture to match the height at which the panel is jacked up; releasing the jack's jacking of the panel, and repeating steps two and three until all anti-deformation fixtures are installed; installing connecting plates and strengthening rows on the panel, and then performing the panel welding operation. In this application, anti-deformation fixtures are made. Before the panel is welded, the main board is jacked up to the height of welding deformation, leaving a margin for deformation, which makes it more convenient for operators to perform operations under the steel plate panel, improves operation efficiency, and reduces the use of man-hours and consumables.

Description

Technical Field

[0001] The present application relates to the field of shipbuilding, and in particular to a welding method for a curved outer plate of a ship. Background Art

[0002] During the panel splicing operation of the curved outer plate of a ship, in order to reduce deformation, strengthening rows need to be installed on the upper surface of the steel plate, one every about 1.5 m. After panel welding, even with the strengthening rows to prevent deformation, after the strengthening rows are removed, due to stress, the area near the weld will still deform downward. Therefore, there is an urgent need for a method to prevent and reduce the degree of deformation, or a way to leave a margin for welding deformation. For this reason, before panel welding, the panel is jacked up to the height of welding deformation by a deformation prevention fixture to leave a margin for deformation. Before applying the deformation prevention fixture, before using the weld support fixture placement and collection trolley and the weld pre-deformation jacking device, personnel need to manually carry the jacking fixture and the jack multiple times under the steel plate at a height of about 1.5 m. After completing one location, the jack needs to be depressurized, and then carry the jack and its extension fixture, and move in a squatting or semi-squatting position, which is extremely inconvenient. Summary of the Invention

[0003] In order to overcome the problems existing in the prior art, the present application provides a welding method for a curved outer plate of a ship.

[0004] A welding method for a curved outer plate of a ship provided by the present application adopts the following technical solutions:

[0005] A welding method for a curved outer plate of a ship includes the following steps:

[0006] Step 1: After confirming the operation content and scope, confirm the number of deformation prevention fixtures required according to the size of the panel. The panel is supported by a fixed fixture at its bottom. The fixed fixture includes a fixed jig and a fixed inner cylinder installed on the fixed jig in a lifting manner. Use a collection trolley or an integrated trolley to transport the deformation prevention fixtures to the designated position under the panel, and the distance between two deformation prevention fixtures is 2 to 3 m;

[0007] Step 2: Push the jacking trolley or the integrated trolley to the panel seam under the deformation prevention fixture, adjust the position of the jacking trolley or the integrated trolley. After positioning, according to the panel thickness, adjust the extension fixture at the top of the jacking trolley or the integrated trolley through the jack on the jacking trolley or the integrated trolley to jack up the panel by 2.5 cm to 3 cm;

[0008] Step 3: Observe the points where the positioning laser emitter on the top of the deformation prevention fixture hits the panel, position the deformation prevention fixture, adjust the top end of the deformation prevention fixture to an appropriate height through the adjustment mechanism, and lock the position of the deformation prevention fixture through the locking mechanism;

[0009] Step 4: Release the jack on the lifting trolley or the integrated trolley, push the lifting trolley or the integrated trolley to the next anti-deformation fixture, and repeat Steps 2 to 3;

[0010] Step 5: After installation, install the connecting plate and the strengthening row on the upper surface of the splicing board. The strengthening row is fixedly welded at both ends and the center of the splicing board, and the connecting plates are evenly distributed between the strengthening rows. Then, carry out the welding operation of the splicing board.

[0011] Preferably, the anti-deformation fixture includes a movable bracket, an adjusting inner cylinder is installed in the movable bracket in a lifting manner, and an adjusting mechanism for adjusting the lifting of the adjusting inner cylinder in the movable bracket is installed between the adjusting inner cylinder and the movable bracket. A weld support is installed at the top of the adjusting inner cylinder.

[0012] Preferably, the adjusting mechanism includes clamps fixedly connected to the movable bracket and the adjusting inner cylinder respectively and a displacement adjusting mechanism between the clamps. One side of the clamp is provided with an opening and is sleeved on the outer wall of the movable bracket or the adjusting inner cylinder through the opening, and the opening end is locked by bolts; the displacement adjusting mechanism includes symmetrically arranged rotating plates. The rotating plate includes a first plate body and a second plate body rotatably connected. The top of the first plate body and the bottom of the second plate body are respectively rotatably connected to the clamps clamped on the adjusting inner cylinder and the movable bracket. An adjusting block is installed at the center of the rotating connection of the first plate body and the second plate body, and a threaded through hole is opened in the adjusting block, and an adjusting threaded rod penetrates through the threaded through hole.

[0013] Preferably, the top of the movable bracket adopts an installation part with an outer diameter smaller than the main body of the movable bracket, and the installation part is used to install the clamp fixedly connected to the movable bracket.

[0014] Preferably, the weld support includes a cylinder body sleeved on the top of the adjusting inner cylinder. A support block is installed at the top of the cylinder body, and a frame body is rotatably installed at the center of the support block. The frame body adopts a U-shaped structure and the top of the frame body abuts against the splicing boards on both sides.

[0015] Preferably, a positioning laser emitter is installed through the center of the top of the frame body, and the frame body is always in a horizontal state when separated from the splicing board.

[0016] By adopting the above technical solution, the adjusting inner cylinder in the anti-deformation fixture is lifted and lowered therein through the adjusting mechanism. The adjusting mechanism rotates the adjusting threaded rod to drive the two adjusting blocks to approach or move away from each other, thereby adjusting the included angle between the first plate body and the second plate body in the rotating plate, realizing the distance between the clamp body for clamping the adjusting inner cylinder and the outer wall of the clamping movable bracket, and thus adjusting the position of the adjusting inner cylinder on the movable bracket. The installation part with an outer diameter smaller than that of the movable bracket main body installed at the top of the movable bracket can stably fix the clamp body to the movable bracket, avoiding the sliding of the clamp body on the movable bracket and affecting the adjustment of the height of the anti-deformation fixture. The weld bracket installed at the top of the adjusting inner cylinder includes a cylinder body sleeved on the top of the adjusting inner cylinder. A U-shaped frame body is rotatably installed on the support block installed on the cylinder body. The top sides of both sides of the frame body can be used to support two adjacent splicing plates, and a positioning laser emitter installed through the center of the frame body can be positioned with the position of the splicing plate when the anti-deformation fixture is placed, ensuring that the anti-deformation fixture can be accurately installed between the welds of the splicing plates.

[0017] Preferably, the collection trolley and the lifting trolley are designed as separate parts or integrally formed.

[0018] Preferably, the collection trolley and the lifting trolley are designed separately. The collection trolley includes a first flatbed truck, a placement rack and a rotary lifting arm installed on the first flatbed truck. The rotary lifting arm is installed at the center of the first flatbed truck. The placement rack includes an arc-shaped rack installed on one side of the first handle of the first flatbed truck and a limit stop block on the top surface of the first flatbed truck. The limit stop blocks are distributed at intervals on the side of the first flatbed truck away from the first handle.

[0019] Preferably, the lifting trolley includes a second flatbed truck and a jack installed on the second flatbed truck. A groove for installing the jack is opened at one end of the second flatbed truck away from the second handle. A limit tube is fixedly connected to the top opening of the groove. An extension fixture is slidably installed in the limit tube. A number of groups of horizontal through holes are evenly distributed on the extension fixture. Locking rods are installed in the through holes. The locking rod includes rod bodies at both ends and a connecting spring in the middle, and the locking rod can completely enter the through hole. A positioning laser emitter is installed at the top of the extension fixture. The limit tube is clamped on the inner side wall of the groove, and the side of the jack is also fixedly connected to the limit tube through a reinforcing plate. The side of the jack is connected to a hydraulic cylinder on the second flatbed truck through a hydraulic pipeline.

[0020] By adopting the above technical solution, when the collecting trolley and the lifting trolley are separately designed, first, the anti-deformation fixture is loaded on the placing rack on the first flatbed by the collecting trolley, and the collecting trolley is moved to transport the anti-deformation fixture to the corresponding point at the bottom of the spliced plate, and the anti-deformation fixture is unloaded from the first flatbed by the rotating lifting arm. After all the anti-deformation fixtures are placed, the spliced plate weld beside the anti-deformation fixture is lifted by the lifting trolley. Specifically, when working, the hydraulic cylinder on the second flatbed in the lifting trolley supplies liquid to the jack through the hydraulic pipeline, and the output end of the jack drives the extension fixture in the limit pipe to lift upward. The extension fixture is positioned with the position of the spliced plate weld through the positioning laser emitter at its top, and the extension fixture lifts the spliced plate weld, so as to facilitate the anti-deformation fixture to be adjusted to the height of lifting and welding deformation of the spliced plate before welding, leaving a margin for deformation. And after the extension fixture extends out of the limit pipe, the rod bodies at both ends of the locking rod on the extension fixture are led out from the through holes on the extension fixture under the action of the middle connecting spring, thus avoiding the situation that the extension fixture slides down due to the failure of the jack, effectively preventing danger and ensuring safe production.

[0021] Preferably, the collecting trolley and the lifting trolley are integrally formed into an integral trolley, which is used for loading the anti-deformation fixture and lifting the spliced plate. Placing racks for placing the anti-deformation fixture are installed on both sides of the integral trolley. A jack is installed at one end of the third flatbed of the integral trolley away from the third handle. The jack is connected to the hydraulic cylinder located at the bottom of the third flatbed through the hydraulic pipeline. A rotating lifting arm is installed at the center of the third flatbed, and the height of the rotating lifting arm is greater than the height of the extension fixture of the jack.

[0022] By adopting the above technical solution, the collecting trolley and the lifting trolley are integrally formed, integrating the loading and unloading of the anti-deformation fixture and the lifting of the spliced plate onto one trolley, enabling the lifting of the spliced plate immediately after the anti-deformation fixture is placed, and greatly improving the installation efficiency of the anti-deformation fixture.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. After the ship's curved outer plate welding method in the present application is used, during the steel plate splicing operation, the operator can bend down to push the small trolley, and the trolley gives support to the operator while moving, making it more convenient to move under the steel plate; at the same time, there is no need to disassemble the jack extension fixture from the body every time, and the efficiency of placing the fixture is increased by at least two times, and for large spliced plates, it can be increased to three times, and the lifting operation efficiency is increased to twice the original.

[0025] 2. After the ship's curved outer plate welding method in the present application is used, the number of strengthening rows required for installation on the upper surface of the steel plate is greatly reduced, and at the same time, after splicing, the labor and material losses for manual correction are reduced. Description of the Drawings

[0026] Figure 1 It is a flowchart of a welding method for the curved outer plate of a ship;

[0027] Figure 2 It is a schematic structural diagram of the splicing plate placed on the fixed fixture;

[0028] Figure 3 It is a schematic structural diagram of the anti-deformation fixture;

[0029] Figure 4 It is a schematic structural diagram of the collection trolley;

[0030] Figure 5 It is a schematic structural diagram of the lifting trolley;

[0031] Figure 6 It is a schematic structural diagram of the integrated trolley.

[0032] Explanation of reference numerals: 1. Anti-deformation fixture; 11. Movable support; 111. Installation part; 12. Adjusting inner cylinder; 13. Weld bracket; 131. Cylinder body; 132. Support block; 133. Frame body; 2. Adjusting mechanism; 21. Clamping body; 22. Displacement adjusting mechanism; 221. Rotating plate; 2211. First plate body; 2212. Second plate body; 2213. Adjusting block; 2214. Adjusting threaded rod; 3. Positioning laser emitter; 4. Collection trolley; 41. First plate car; 411. First handle; 42. Placing rack; 421. Arc-shaped rack; 422. Limit stop block; 43. Rotary lifting arm; 5. Lifting trolley; 51. Second plate car; 511. Jack; 5111. Reinforcing plate; 5112. Hydraulic pipeline; 5113. Hydraulic cylinder; 5114. Extension fixture; 5115. Perforation; 512. Second handle; 513. Groove; 52. Limit tube; 53. Locking rod; 531. Rod body; 6. Integrated trolley; 61. Third plate car; 611. Third handle; 7. Splicing plate; 71. Connecting plate; 72. Reinforcing row; 8. Fixed fixture; 81. Fixed tire rack; 82. Fixed inner cylinder. Detailed implementation manners

[0033] The following will further describe the present application in detail Figure 1-6 in conjunction with the attached drawings.

[0034] Example 1

[0035] The embodiment of the present application discloses a welding method for the curved outer plate of a ship.

[0036] Referring to Figure 1 , a welding method for the curved outer plate of a ship includes the following steps:

[0037] Step 1: After confirming the operation content and scope, confirm the quantity of the anti-deformation fixture 1 required according to the size of the splicing plate 7. The splicing plate 7 is supported by the fixing fixture 8 at its bottom. The fixing fixture 8 includes a fixing jig 81 and a fixing inner cylinder 82 that is lifted and installed on the fixing jig 81. Use the collection trolley 4 to transport the anti-deformation fixture 1 to the designated position under the splicing plate 7, and the distance between two anti-deformation fixtures 1 is 3 m;

[0038] Step 2: Push the jacking trolley 5 to the seam of the splicing plate 7 beside the anti-deformation fixture 1. Cooperate with the positioning laser emitter 3 to adjust the position of the jacking trolley 5. After positioning, adjust the extension fixture 5114 at its top through the jack 511 according to the thickness of the splicing plate 7, and lift the splicing plate 7 by 3 cm;

[0039] Step 3: Observe the points where the positioning laser emitter 3 on the top of the anti-deformation fixture 1 hits the splicing plate 7, position the anti-deformation fixture 1, adjust the top end of the anti-deformation fixture 1 to a suitable height through the adjusting mechanism 2, and lock the position of the anti-deformation fixture 1 through the locking mechanism. The locking mechanism uses bolts passing through the movable bracket 11 and the adjusting inner cylinder 12 to fix the two;

[0040] Step 4: Release the jack 511 on the jacking trolley 5, push the jacking trolley 5 to the next anti-deformation fixture 1, and repeat Steps 2 to 3;

[0041] Step 5: After installation, install the connecting plate 71 and the strengthening row 72 on the upper surface of the splicing plate 7. Among them, the strengthening row 72 is fixedly welded at both ends and the center of the splicing plate 7, and the connecting plates 71 are evenly distributed between the strengthening rows 72. Then, carry out the welding operation of the splicing plate 7.

[0042] Refer to Figures 2-6, the anti-deformation fixture 1 includes a movable bracket 11, an adjusting inner cylinder 12 is installed in the movable bracket 11 in a lifting manner, and an adjusting mechanism 2 for adjusting the lifting of the adjusting inner cylinder 12 in the movable bracket 11 is installed between the adjusting inner cylinder 12 and the movable bracket 11. A weld bracket 13 is installed at the top of the adjusting inner cylinder 12. The adjusting mechanism 2 includes a clamp body 21 fixed to the movable bracket 11 and the adjusting inner cylinder 12 respectively, and a displacement adjusting mechanism 22 between the clamp bodies 21. One side of the clamp body 21 is provided with an opening and is sleeved on the outer wall of the movable bracket 11 or the adjusting inner cylinder 12 through the opening, and the opening end is locked by bolts; the displacement adjusting mechanism 22 includes symmetrically arranged rotating plates 221. The rotating plate 221 includes a first plate body 2211 and a second plate body 2212 that are rotatably connected. The top of the first plate body 2211 and the bottom of the second plate body 2212 are respectively rotatably connected to the clamp bodies 21 clamped on the adjusting inner cylinder 12 and the movable bracket 11. A regulating block 2213 is installed at the center of the rotating connection between the first plate body 2211 and the second plate body 2212. A threaded through hole 5115 is opened in the regulating block 2213, and a regulating threaded rod 2214 penetrates through the threaded through hole 5115. The top of the movable bracket 11 adopts a mounting portion 111 with an outer diameter smaller than the main body of the movable bracket 11, and the mounting portion 111 is used to install the clamp body 21 fixedly connected to the movable bracket 11. The weld bracket 13 includes a cylinder body 131 sleeved on the top of the adjusting inner cylinder 12. A support block 132 is installed at the top of the cylinder body 131. A frame body 133 is rotatably installed at the center of the support block 132. The frame body 133 adopts a U-shaped structure and the top of the frame body 133 abuts against the splicing plates 7 on both sides. A positioning laser emitter 3 is installed through the center of the top of the frame body 133. The frame body 133 is always in a horizontal state when separated from the splicing plate 7. The adjusting inner cylinder 12 in the anti-deformation fixture 1 adjusts the lifting of the adjusting inner cylinder 12 therein through the adjusting mechanism 2. The adjusting mechanism 2 rotates the adjusting threaded rod 2214 to drive the two regulating blocks 2213 to approach or move away from each other, thereby adjusting the angle between the first plate body 2211 and the second plate body 2212 in the rotating plate 221, and realizing the distance between the clamp bodies 21 for clamping the adjusting inner cylinder 12 and the outer wall of the clamping movable bracket 11, so as to adjust the position of the adjusting inner cylinder 12 on the movable bracket 11. The mounting portion 111 installed at the top of the movable bracket 11 with an outer diameter smaller than the main body of the movable bracket 11 can stably fix the clamp body 21 to the movable bracket 11, avoiding the sliding of the clamp body 21 on the movable bracket 11 and affecting the adjustment of the height of the anti-deformation fixture 1.The weld bracket 13 installed at the top of the adjusting inner cylinder 12 includes a cylinder body 131 sleeved on the top of the adjusting inner cylinder 12. A U-shaped frame body 133 is rotatably installed on a support block 132 installed on the cylinder body 131. The top parts on both sides of the frame body 133 can be used to support two adjacent splicing plates 7. Moreover, a positioning laser emitter 3 installed through the center of the frame body 133 can be positioned with the position of the splicing plate 7 when placing the anti-deformation fixture 1, ensuring that the anti-deformation fixture 1 can be accurately installed between the welds of the splicing plate 7.

[0043] Refer to Figures 2-6, the collecting trolley 4 and the lifting trolley 5 adopt a split structure. The collecting trolley 4 and the lifting trolley 5 are designed separately. The collecting trolley 4 includes a first flatbed 41, a placing rack 42 and a rotating lifting arm 43 installed on the first flatbed 41. The rotating lifting arm 43 is installed at the center of the first flatbed 41. The placing rack 42 includes an arc-shaped rack 421 installed on one side of the first handle 411 of the first flatbed 41 and a limiting stop 422 on the top surface of the first flatbed 41. The limiting stops 422 are distributed at intervals on the side of the first flatbed 41 away from the first handle 411. The lifting trolley 5 includes a second flatbed 51 and a jack 511 installed on the second flatbed 51. A groove 513 for installing the jack 511 is opened at one end of the second flatbed 51 away from the second handle 512. A limiting tube 52 is fixedly connected to the top opening of the groove 513. An extending fixture 5114 is slidably installed in the limiting tube 52. A number of groups of horizontal through holes 5115 are evenly distributed on the extending fixture 5114. Locking rods 53 are installed in the through holes 5115. The locking rod 53 includes rod bodies 531 at both ends and a connecting spring in the middle. The locking rod 53 can completely enter the through hole 5115. A positioning laser emitter 3 is installed on the top of the extending fixture 5114. The limiting tube 52 is clamped on the inner side wall of the groove 513. The side of the jack 511 is also fixedly connected to the limiting tube 52 through a reinforcing plate 5111. The side of the jack 511 is connected to a hydraulic cylinder 5113 on the second flatbed 51 through a hydraulic pipeline 5112. When the collecting trolley 4 and the lifting trolley 5 are designed separately, first, the anti-deformation fixture 1 is loaded on the placing rack 42 on the first flatbed 41 by the collecting trolley 4. The collecting trolley 4 is moved to transport the anti-deformation fixture 1 to the corresponding point at the bottom of the splicing plate 7, and the anti-deformation fixture 1 is unloaded from the first flatbed 41 by the rotating lifting arm 43. After all the anti-deformation fixtures 1 are placed, the splicing plate 7 at the weld of the anti-deformation fixture 1 is lifted by the lifting trolley 5. Specifically, when working, the hydraulic cylinder 5113 on the second flatbed 51 in the lifting trolley 5 supplies liquid to the jack 511 through the hydraulic pipeline 5112. The output end of the jack 511 drives the extending fixture 5114 in the limiting tube 52 to lift upward. The extending fixture 5114 positions with the position of the weld of the splicing plate 7 through the positioning laser emitter 3 on its top. The extending fixture 5114 lifts the weld of the splicing plate 7, so as to facilitate the anti-deformation fixture 1 to be adjusted to the height of lifting the splicing plate 7 to cause welding deformation before welding the splicing plate 7, leaving a margin for deformation. And after the extending fixture 5114 extends out of the limiting tube 52, the rod bodies 531 at both ends of the locking rod 53 on the extending fixture 5114 are led out from the through holes 5115 on the extending fixture 5114 under the action of the middle connecting spring, thus avoiding the situation that the extending fixture 5114 slides down due to the failure of the jack 511, effectively preventing danger and ensuring safe production.

[0044] Embodiment 2

[0045] An embodiment of the present application discloses a welding method for a curved outer plate of a ship.

[0046] Referring to Figures 1-6 , the difference between this embodiment and Embodiment 1 is that the collecting trolley 4 and the jacking trolley 5 are integrally formed into an integrated trolley 6. The integrated trolley 6 is used for loading the deformation prevention fixture 1 and jacking up the panel 7. Placement racks 42 for placing the deformation prevention fixture 1 are installed on both sides of the integrated trolley 6. A jack 511 is installed at one end of the third trolley 61 of the integrated trolley 6 away from the third handle 611. The jack 511 is connected to a hydraulic cylinder 5113 located at the bottom of the third trolley 61 through a hydraulic pipeline 5112. A rotating crane arm 43 is installed at the center of the third trolley 61, wherein the height of the rotating crane arm 43 is greater than the height of the extending fixture 5114 of the jack 511. The collecting trolley 4 and the jacking trolley 5 are integrally formed, integrating the loading and unloading of the deformation prevention fixture 1 and the jacking of the panel 7 onto one trolley, enabling the panel 7 to be jacked up immediately after the deformation prevention fixture 1 is placed, greatly improving the installation efficiency of the deformation prevention fixture 1.

[0047] The above are all preferred embodiments of the present application. Without limiting the protection scope of the present application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A method for welding curved outer plates of a ship, characterized in that: The following steps are involved: Step 1: After confirming the operation content and operation scope, the number of anti-deformation jigs (1) required is confirmed according to the size of the panel (7). The panel (7) is supported by a fixed jig (8) at the bottom thereof. The fixed jig (8) includes a fixed tire frame (81) and a fixed inner cylinder (82) which is installed on the fixed tire frame (81) in a lifting manner. The anti-deformation jigs (1) are transported to a designated position under the panel (7) using a collecting trolley (4) or an integrated trolley (6), and the interval between two anti-deformation jigs (1) is 2 to 3 meters. Step 2: Push the lifting trolley (5) or the integrated trolley (6) to the side of the anti-deformation jig (1) under the board seam of the panel (7), adjust the position of the lifting trolley (5) or the integrated trolley (6), and after completing the positioning, adjust the extension jig (5114) on the top of the lifting trolley (5) or the integrated trolley (6) according to the thickness of the panel (7), and lift the panel (7) by 2.5 cm to 3 cm; Step 3: Observe the point where the positioning laser transmitter (3) on the top of the anti-deformation jig (1) hits the jig plate (7), locate the position of the anti-deformation jig (1), adjust the top of the anti-deformation jig (1) to a suitable height through the adjustment mechanism (2), and lock the position of the anti-deformation jig (1) through the locking mechanism; Step 4: Release the jack (511) on the lifting trolley (5) or the integrated trolley (6), push the lifting trolley (5) or the integrated trolley (6) to the next anti-deformation fixture (1), and repeat steps 2 to 3. The anti-deformation fixture (1) comprises a movable bracket (11), an adjusting inner cylinder (12) is installed in the movable bracket (11) for lifting, and an adjusting mechanism (2) for adjusting the lifting of the adjusting inner cylinder (12) in the movable bracket (11) is installed between the adjusting inner cylinder (12) and the movable bracket (11), and a welding bracket (13) is installed on the top of the adjusting inner cylinder (12); the adjusting mechanism (2) comprises a clamping body (21) fixed to the movable bracket (11) and the adjusting inner cylinder (12) respectively, and a displacement adjusting mechanism (22) between the clamping bodies (21), and one side of the clamping body (21) is provided with an opening The displacement adjustment mechanism (22) comprises a symmetrically arranged rotating plate (221), wherein the rotating plate (221) comprises a first plate body (2211) and a second plate body (2212) which are rotatably connected, the top of the first plate body (2211) and the bottom of the second plate body (2212) are respectively rotatably connected to a clamping body (21) clamped on the adjusting inner cylinder (12) and the movable bracket (11), an adjusting block (2213) is installed at the center of the rotatable connection between the first plate body (2211) and the second plate body (2212), a threaded through hole (5115) is provided in the adjusting block (2213), and an adjusting threaded rod (2214) passes through the threaded through hole (5115); Step 5: After the installation is completed, the connecting plate (71) and the reinforcing row (72) are installed on the upper surface of the panel (7), wherein the reinforcing row (72) is fixedly welded at both ends and the center of the panel (7), and the connecting plate (71) is evenly distributed between the reinforcing rows (72), and then the panel (7) is welded.

2. A method for welding curved outer plates of a ship according to claim 1, characterized in that: The top of the movable bracket (11) adopts a mounting portion (111) having an outer diameter smaller than that of the main body of the movable bracket (11), and the mounting portion (111) is used to mount a clamping body (21) fixedly connected to the movable bracket (11).

3. A method for welding curved outer plates of a ship according to claim 1, characterized in that: The weld bracket (13) comprises a cylinder (131) mounted on the top of the adjusting inner cylinder (12), a support block (132) being mounted on the top of the cylinder (131), a frame (133) being rotatably mounted at the center of the support block (132), wherein the frame (133) is of a U-shaped structure and the top of the frame (133) is in contact with the panels (7) on both sides.

4. A method for welding curved outer plates of a ship according to claim 3, characterized in that: A positioning laser transmitter (3) is installed through the top center of the frame (133), and the frame (133) is always in a horizontal state when separated from the puzzle board.

5. A method for welding curved outer plates of a ship according to claim 1, characterized in that: The collecting trolley (4) and the lifting trolley (5) are formed in separate parts or in one piece.

6. A method for welding curved outer plates of a ship according to claim 5, characterized in that: The collecting trolley (4) and the lifting trolley (5) are designed as separate parts, wherein the collecting trolley (4) comprises a first trolley (41) and a placing frame (42) and a rotating arm (43) installed on the first trolley (41), wherein the rotating arm (43) is installed at the center of the first trolley (41), and the placing frame (42) comprises an arc frame (421) installed on one side of a first handle (411) of the first trolley (41) and a limit stopper (422) on the top surface of the first trolley (41), wherein the limit stopper (422) is distributed at intervals on a side of the first trolley (41) away from the first handle (411).

7. A method for welding curved outer plates of a ship according to claim 6, characterized in that: The lifting trolley (5) comprises a second trolley (51) and a jack (511) mounted on the second trolley (51); a groove (513) for mounting the jack (511) is provided at one end of the second trolley (51) away from the second handle (512); a limit tube (52) is fixedly connected to the top opening of the groove (513); an extension jig (5114) is slidably mounted in the limit tube (52); a plurality of groups of transverse perforations (5115) are evenly distributed on the extension jig (5114); a locking rod (53) is mounted in the perforation (5115); The locking rod (53) includes a rod body (531) at both ends and a connecting spring in the middle, and the locking rod (53) can completely enter the perforation (5115). A positioning laser emitter (3) is installed on the top of the extension fixture (5114), wherein the limit tube (52) is clamped on the inner wall of the groove (513), and the side of the jack (511) is also fixedly connected to the limit tube (52) through a reinforcing plate (5111), and the side of the jack (511) is connected to the hydraulic cylinder (5113) on the second flatbed car (51) through a hydraulic pipeline (5112).

8. A method for welding curved outer plates of a ship according to claim 5, characterized in that: The collecting trolley (4) and the lifting trolley (5) are integrally formed into an integrated trolley (6), and the integrated trolley (6) is used for loading the anti-deformation jig (1) and lifting the jig (7). Placement racks (42) for placing the anti-deformation jig (1) are installed on both sides of the integrated trolley (6). A jack (511) is installed at one end of the third trolley (61) away from the third handle (611). The jack (511) is connected to a hydraulic cylinder (5113) located at the bottom of the third trolley (61) through a hydraulic pipeline (5112). A rotating arm (43) is installed at the center of the third trolley (61), wherein the height of the rotating arm (43) is greater than the height of the jig (5114) extended by the jack (511).

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