An automatic assembly and welding device for the jacket of an offshore platform

Abstract

The present invention belongs to the technical field of welding, and discloses a fully automatic assembly welding device for a jacket of an offshore platform, including a support assembly; two dehumidification assemblies; two clamping assemblies; a moving assembly and a welding assembly. By installing a newly designed welding assembly, when the welding head performs welding, the shielding gas is conveyed to the connecting ring through the ventilation pipe. After driving the fan blades to rotate, it will be rectified by the conical block. Part of the air flow will be blown directly under the guidance of the three grooves, while the other part of the air flow will impact the bottom surface of the conical block and spread around, so as to form a more complete protection area for the welding area. By the circular movement of the moving block on the circular track, the positions of the guiding pipe and the ventilation pipe can be adjusted appropriately to adapt to the welding work, solving the problems that the existing shielding gas cannot protect the entire welding area and affects the welding flexibility.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, and particularly relates to a fully automatic assembly welding device for a jacket of an offshore platform. Background Technique

[0002] A jacket platform, also known as a piled platform, is supported by piles driven into the seabed to withstand external forces such as wind, waves, and currents. The jacket platform mainly consists of four parts: a jacket, piles, a jacket cap, and a deck. Among them, the jacket serves as a support structure, the piles are used to fix the jacket to the seabed, the jacket cap is a transitional structure between the jacket and the deck, and the deck bears various equipment and functional areas of the platform;

[0003] Each part of the jacket is fixed by bolts or welding methods. And to enhance its structural strength, a large number of diagonal metal rods are used, but this will increase the difficulty of welding and assembly. Moreover, since the jacket is installed on the water surface, to reduce transportation costs, the welding and assembly area is mostly set on the shore near the water, and the manufacturing and installation cycles are also long. In such a high water vapor environment, a protected welding method is usually adopted to avoid the negative impacts of high humidity of water vapor on welding, such as splashing and affecting arc stability. However, the existing shielding gases are directly sleeved outside the welding head, unable to protect the entire welding area, with poor flexibility, and since the diameter at the position of the welding head becomes larger, the welding flexibility will also be affected. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic assembly welding device for a jacket of an offshore platform to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fully automatic assembly welding device for a jacket of an offshore platform, including a support assembly, two dehumidification assemblies are fixedly installed inside the support assembly, and further includes a linkage clamping mechanism, which includes two clamping assemblies. Both of the two clamping assemblies are movably installed on the top of the support assembly, and a moving assembly is fixedly installed on the top of the two clamping assemblies;

[0006] A welding assembly, the welding assembly is fixedly installed at the bottom of the moving assembly. The welding assembly includes a fixed block, a circular track is fixedly installed at the bottom of the fixed block, a welding head is fixedly connected to the center position inside the circular track, three moving blocks are movably clamped inside the circular track, a guiding tube is fixedly inserted into the right moving block, ventilation tubes are fixedly inserted into both of the left moving blocks, the tails of the two ventilation tubes are fixedly connected to a connecting ring, a fan blade is rotatably installed inside the connecting ring, and a conical block is fixedly installed on the outside of the fan blade.

[0007] Preferably, electric guide wheels are installed in all three of the moving blocks and can move within the annular track, and three grooves are circumferentially formed on the conical surface of the conical block.

[0008] Preferably, the support assembly includes a base, a rectangular track is fixedly installed on the top of the base, four groups of runners are movably clamped in the rectangular track, and a first lead screw is fixedly connected to the inner side of each of the four groups of runners.

[0009] Preferably, the dehumidification assembly includes two frames, the two frames are fixedly installed on the front and rear sides of the base, fans are fixedly installed in both of the two frames, a triangular prism is fixedly connected between the rotating shafts of the two fans, and heating wires are installed around the outer edge of the triangular prism.

[0010] Preferably, the clamping assembly includes a moving plate, the moving plate is threadedly connected to the outer edge of the first lead screw, a lead screw motor is installed at the socket position of the moving plate and the first lead screw, a motor is fixedly installed on the top of the moving plate, an output shaft of the motor is fixedly connected to a U-shaped plate, torsion springs are fixedly connected to both symmetric sides of the U-shaped plate, L-shaped rods are elastically connected to the tops of the two torsion springs, rubber wheels are rotatably installed at the other ends of the two L-shaped rods, second springs are inserted into the rotating shafts at the tops of the two rubber wheels, and both ends of the two second springs are elastically connected to the U-shaped plate.

[0011] Preferably, the U-shaped plate is a combined plate of a circular plate at the bottom and a U-shaped groove plate at the top, and both of the two L-shaped rods are movably inserted into the circular plate.

[0012] Preferably, the moving assembly includes two second lead screws, the two second lead screws are fixedly installed on the left and right sides of the base, a gantry is movably sleeved on the outer edges of the two second lead screws, a stepping motor is installed in the gantry and penetrates through the outer edge of the second lead screw, a rotating block is slidably installed on the inner side of the top of the gantry, a robotic arm is fixedly connected to the bottom of the rotating block, and a fixing block is fixedly connected to the tail end of the robotic arm.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. By installing a newly designed welding assembly in the present invention, when the welding head performs welding, the shielding gas is conveyed to the connecting ring through the ventilation pipe. After driving the fan blades to rotate, it will be rectified by the conical block. Part of the air flow will be blown directly under the guidance of the three grooves, while the other part of the air flow will impact the bottom surface of the conical block and spread around, so as to form a more complete protection area for the welding area. Through the circular movement of the moving block on the annular track, the positions of the guiding pipe and the ventilation pipe can be adjusted appropriately to adapt to the welding work, solving the problems that the existing shielding gas cannot protect the entire welding area and affects the welding flexibility.

[0015] 2. The present invention is equipped with a newly designed clamping assembly. When the metal tube is inserted along the area where the U-shaped plate is located, the rubber wheels on both sides will clamp it when they come into contact with the metal tube. The second spring drives the torsion spring to rotate a certain angle within the U-shaped plate, and the torsion spring will provide a clamping force. Moreover, when the two rubber wheels displace, the second spring at their top will also deform into a C shape, likewise providing an inward clamping force on the metal tube. The newly designed clamping assembly can quickly position and move the two metal tubes to be welded, thereby improving the welding efficiency.

[0016] 3. The present invention is equipped with a dehumidifying assembly that can rotate by itself. The heating wire generates heat and evaporates the water vapor in the area of the clamping assembly from bottom to top. And by slowly driving the two fans, it will drive the triangular prism and the heating wire to rotate. The airflow generated by evaporation in this area can be discharged through the two fans. Cooperating with the protective gas, it can significantly improve the welding effect in a high water vapor environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a top view of the overall structure of the present invention;

[0019] Figure 3 is a schematic diagram of the structure of the dehumidifying assembly of the present invention;

[0020] Figure 4 is a schematic diagram of the structure of the clamping assembly of the present invention;

[0021] Figure 5 is a schematic diagram of the structure of the moving assembly of the present invention;

[0022] Figure 6 is a schematic diagram of the structure of the welding assembly of the present invention;

[0023] Figure 7 is a schematic diagram of the structure of the conical block of the present invention.

[0024] In the figure: 1. Support assembly; 2. Dehumidifying assembly; 3. Clamping assembly; 4. Moving assembly; 5. Welding assembly; 11. Base; 12. Rectangular track; 13. Runner; 14. First lead screw; 21. Frame; 22. Fan; 23. Triangular prism; 24. Heating wire; 31. Moving plate; 32. Motor; 33. U-shaped plate; 34. Torsion spring; 35. L-shaped rod; 36. Rubber wheel; 37. Second spring; 41. Second lead screw; 42. Gantry; 43. Rotating block; 44. Robot arm; 51. Fixed block; 52. Ring track; 53. Moving block; 54. Guide tube; 55. Ventilation tube; 56. Connecting ring; 57. Fan blade; 58. Conical block; 59. Welding head. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0026] As Figures 1 to 7 shown, the embodiment of the present invention provides a fully automatic assembly and welding device for a jacket of an offshore platform, including a support assembly 1. Two dehumidification assemblies 2 are fixedly installed inside the support assembly 1. It also includes a linkage clamping mechanism, which includes two clamping assemblies 3. Both clamping assemblies 3 are movably installed on the top of the support assembly 1. A moving assembly 4 is fixedly installed on the top of the two clamping assemblies 3;

[0027] A welding assembly 5 is fixedly installed at the bottom of the moving assembly 4. The welding assembly 5 includes a fixed block 51. A circular track 52 is fixedly installed at the bottom of the fixed block 51. A welding head 59 is fixedly connected to the center position inside the circular track 52. Three moving blocks 53 are movably clamped inside the circular track 52. A guiding pipe 54 is fixedly inserted into the right moving block 53. Ventilation pipes 55 are fixedly inserted into both left moving blocks 53. The tails of the two ventilation pipes 55 are fixedly connected to a connecting ring 56. A fan blade 57 is rotatably installed inside the connecting ring 56. A conical block 58 is fixedly installed on the outside of the fan blade 57; Electric guide wheels are installed in all three moving blocks 53 and can move inside the circular track 52. Three grooves are circumferentially formed on the conical surface of the conical block 58;

[0028] When the welding head 59 performs welding, a shielding gas is connected through the ventilation pipe 55 to blow the welding position. The shielding gas is conveyed to the connecting ring 56 through the ventilation pipe 55. After driving the fan blade 57 to rotate, it will be rectified by the conical block 58. Part of the air flow will be blown directly under the guidance of the three grooves, while the other part of the air flow will impact the bottom surface of the conical block 58 and spread around, so as to form a more complete protection area for the welding area. By the circular movement of the moving block 53 on the circular track 52, the positions of the guiding pipe 54 and the ventilation pipe 55 can be adjusted appropriately to adapt to the welding work, solving the problems that the existing shielding gas cannot protect the entire welding area and affects the welding flexibility;

[0029] Among them, the support assembly 1 includes a base 11. A rectangular track 12 is fixedly installed on the top of the base 11. Four groups of runners 13 are movably clamped inside the rectangular track 12. A first lead screw 14 is fixedly connected to the inside of each of the four groups of runners 13. The inside of the runner 13 is driven by an electric motor and can move inside the rectangular track 12;

[0030] By driving the moving plate 31, it can move in the direction where the first lead screw 14 is located. While moving, the rotating wheel 13 also moves on the rectangular track 12. According to the welding requirements, the driving motor 32 is driven to drive the two clamped metal pipes to rotate to a certain angle and align them.

[0031] Among them, the dehumidification component 2 includes two frames 21. The two frames 21 are fixedly installed on the front and rear sides of the base 11. Inside each of the two frames 21, a fan 22 is fixedly installed. A triangular prism 23 is fixedly connected between the rotating shafts of the two fans 22. A heating wire 24 is installed around the outer edge of the triangular prism 23.

[0032] The heating wire 24 generates heat, evaporating the water vapor in the area of the clamping component 3 from bottom to top. And by slowly driving the two fans 22, it will drive the triangular prism 23 and the heating wire 24 to rotate. The airflow generated by evaporation in this area can be discharged through the two fans 22. Cooperating with the protective gas, it can greatly improve the welding effect in a high water vapor environment.

[0033] Among them, the clamping component 3 includes a moving plate 31. The moving plate 31 is threadedly connected to the outer edge of the first lead screw 14. A lead screw motor is installed at the socket position of the moving plate 31 and the first lead screw 14, which can drive the moving plate 31 to move. A motor 32 is fixedly installed on the top of the moving plate 31. The output shaft of the motor 32 is fixedly connected to a U-shaped plate 33. Torsion springs 34 are fixedly connected to both symmetric sides of the U-shaped plate 33. The tops of the two torsion springs 34 are elastically connected to L-shaped rods 35. The other ends of the two L-shaped rods 35 are rotatably installed with rubber wheels 36. The rotating shafts at the tops of the two rubber wheels 36 are inserted with second springs 37. Both ends of the two second springs 37 are elastically connected to the U-shaped plate 33; The U-shaped plate 33 is a combined plate with a circular plate at the bottom and a U-shaped groove plate at the top. Both L-shaped rods 35 are movably inserted into the circular plate.

[0034] Install the two metal pipes to be welded on the clamping component 3. Insert the metal pipes along the area where the U-shaped plate 33 is located. When the rubber wheels 36 on both sides come into contact with the metal pipes, they will clamp them. The second springs 37 in the U-shaped plate 33 drive the torsion springs 34 to rotate a certain angle. The torsion springs 34 will provide a clamping force. And when the two rubber wheels 36 displace, the second springs 37 at their tops will also generate a C-shaped deformation, also providing an inward clamping force on the metal pipes.

[0035] Among them, the moving component 4 includes two second lead screws 41. Both of the two second lead screws 41 are fixedly installed on the left and right sides of the base 11. A gantry 42 is movably sleeved on the outer edges of the two second lead screws 41. A stepping motor is installed inside the gantry 42 and penetrates through the outer edge of the second lead screw 41. A rotating block 43 is slidably installed on the inner side of the top of the gantry 42. A robotic arm 44 is fixedly connected to the bottom of the rotating block 43. A fixed block 51 is fixedly connected to the tail end of the robotic arm 44;

[0036] The moving component 4 can move the welding component 5 to the position of the metal pipe for welding. The gantry 42 moves back and forth at the position where the second lead screw 41 is located, while the rotating block 43 drives the robotic arm 44 and the welding component 5 to move horizontally on the slide rail inside the second lead screw 41. By rotating the rotating block 43, the robotic arm 44 and the welding component 5 can be rotated at any angle.

[0037] Working principle:

[0038] When using the present invention, first, two metal pipes to be welded are installed on the clamping component 3. The metal pipes are inserted along the area where the U-shaped plate 33 is located. When the rubber wheels 36 on both sides come into contact with the metal pipes, they will clamp the metal pipes. The second spring 37 drives the torsion spring 34 to rotate a certain angle inside the U-shaped plate 33. The torsion spring 34 will provide a clamping force. And when the two rubber wheels 36 are displaced, the second spring 37 on their top will also produce a C-shaped deformation, which also provides an inward clamping force on the metal pipe. After the two metal pipes to be welded are installed, by driving the moving plate 31, it can move in the direction of the first lead screw 14. At the same time, the runner 13 also moves on the rectangular track 12. According to the welding requirement, the motor 32 is driven to drive the two clamped metal pipes to rotate to a certain angle and align them;

[0039] Then, the dehumidification component 2 is started to dehumidify the welding environment. The heating wire 24 will generate heat and evaporate the water vapor in the area of the clamping component 3 from bottom to top. And the two fans 22 are slowly driven, which will drive the triangular prism 23 and the heating wire 24 to rotate. The air flow generated by evaporation in this area can be discharged through the two fans 22;

[0040] After the preparation work is completed, the moving assembly 4 is driven to move the welding assembly 5 to the position of the metal pipe for welding. The gantry 42 moves forward and backward at the position of the second screw rod 41, and the rotating block 43 moves the mechanical arm 44 and the welding assembly 5 horizontally on the slide rail in the second screw rod 41. The mechanical arm 44 and the welding assembly 5 can be arbitrarily changed in rotation angle by rotating the rotating block 43. At this time, the welding rod is inserted into the guide tube 54, the welding head 59 is started, and welding is performed at the connection of the metal pipe. The welding assembly 5 can be slowly moved by the mechanical arm 44 to form a uniform weld, and the welding head 59 is moved forward and backward to form a uniform weld. When welding, a shielding gas is connected through the ventilation pipe 55 to blow on the welding position. The shielding gas is transported to the connecting ring 56 through the ventilation pipe 55, and after driving the fan blade 57 to rotate, it will be rectified by the conical block 58. Part of the airflow will be blown directly under the guidance of the three grooves, while the other part of the airflow will hit the bottom surface of the conical block 58 and spread around, so as to form a more complete protection area for the welding area. By moving the moving block 53 in a circular motion on the annular track 52, the positions of the guide pipe 54 and the ventilation pipe 55 can be appropriately adjusted to adapt to the welding work, and the work process ends here.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic assembly welding device for an offshore platform jacket, comprising a support assembly (1), characterized in that: The support assembly (1) has two dehumidification assemblies (2) fixedly installed inside, and further includes: A linkage clamping mechanism, comprising two clamping assemblies (3), wherein the two clamping assemblies (3) are movably mounted on the top of the support assembly (1), and a moving assembly (4) is fixedly mounted on the top of the two clamping assemblies (3); A welding assembly (5), wherein the welding assembly (5) is fixedly mounted on the bottom of the moving assembly (4), and the welding assembly (5) comprises a fixed block (51), a circular track (52) is fixedly mounted on the bottom of the fixed block (51), a welding head (59) is fixedly connected to the inner center position of the circular track (52), three moving blocks (53) are movably connected in the circular track (52), a guide tube (54) is fixedly inserted in the right moving block (53), two left moving blocks (53) are fixedly inserted with ventilation pipes (55), the tail ends of the two ventilation pipes (55) are fixedly connected with a connecting ring (56), a fan blade (57) is rotatably mounted inside the connecting ring (56), and a conical block (58) is fixedly mounted on the outer side of the fan blade (57); The clamping assembly (3) comprises a movable plate (31), the movable plate (31) being threadedly connected to the outer edge of a first screw rod (14), a screw motor being installed at the sleeved position between the movable plate (31) and the first screw rod (14), a motor (32) being fixedly installed on the top of the movable plate (31), an output shaft of the motor (32) being fixedly connected to a U-shaped plate (33), torsion springs (34) being fixedly connected to the symmetrical sides of the U-shaped plate (33), the tops of the two torsion springs (34) being elastically connected to L-shaped rods (35), the other ends of the two L-shaped rods (35) being rotatably installed with rubber wheels (36), the top rotation axes of the two rubber wheels (36) being plugged with second springs (37), and both ends of the two second springs (37) being elastically connected to the U-shaped plate (33); The U-shaped plate (33) is a composite plate of a bottom circular plate and a top U-shaped groove plate, and the two L-shaped rods (35) are movably inserted in the circular plate.

2. The fully automatic assembly welding device for an offshore platform jacket according to claim 1 is characterized in that: The three moving blocks (53) are each equipped with an electric guide wheel that can move within the annular track (52), and the conical surface of the conical block (58) is surrounded by three grooves.

3. The fully automatic assembly welding device for an offshore platform jacket according to claim 1 is characterized in that: The support assembly (1) comprises a base (11), a rectangular track (12) being fixedly mounted on the top of the base (11), four groups of rotating wheels (13) being movably engaged in the rectangular track (12), and the inner sides of the four groups of rotating wheels (13) are all fixedly connected to a first screw rod (14).

4. The fully automatic assembly welding device for an offshore platform jacket according to claim 3 is characterized in that: The dehumidification component (2) comprises two frames (21), the two frames (21) being fixedly mounted on the front and rear sides of the base (11), the two frames (21) being fixedly mounted with fans (22), the rotating shafts of the two fans (22) being fixedly connected with a triangular prism (23), and the outer edge of the triangular prism (23) being surrounded by a heating wire (24).

5. The fully automatic assembly welding device for an offshore platform jacket according to claim 3 is characterized in that: The moving assembly (4) comprises two second screw rods (41), the two second screw rods (41) are fixedly mounted on the left and right sides of the base (11), the outer edges of the two second screw rods (41) are movably sleeved with a gantry (42), a stepping motor is installed in the gantry (42) and penetrates and is installed on the outer edge of the second screw rod (41), a rotating block (43) is slidably mounted on the inner side of the top of the gantry (42), a mechanical arm (44) is fixedly connected to the bottom of the rotating block (43), and a fixed block (51) is fixedly connected to the tail end of the mechanical arm (44).

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