Special ship steel structural part welding equipment and method

Abstract

The invention belongs to the technical field of steel structure welding, particularly relates to special ship steel structural part welding equipment and a method, and provides the following scheme aiming at the problem that the existing special ship steel structural part welding equipment cannot keep the stability of the butt joint position of a welding part: the special ship steel structural part welding equipment comprises a base, the device comprises a base, the outer portion of the base is fixedly connected with a plurality of fixing angle steel distributed at equal intervals, the upper side of the base is fixedly connected with a mounting table, two symmetrical annular bases are arranged above the mounting table, butt joint control modules are arranged on the two annular bases, and welding parts are arranged in the two annular bases. According to the special ship steel structural part welding equipment and method, when the welding parts are in butt joint to form a welding seam, the welding parts can always form a fixed and stable butt joint posture, so that the influence of welding on the butt joint posture is reduced, the situation of reworking is avoided, and the welding quality and the welding efficiency of the equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure welding, and in particular to a welding device and method for special ship steel structure parts. Background Art

[0002] Ship steel structure welding equipment is mainly used to firmly connect the various components of the ship steel structure together, ensure structural strength, achieve sealing performance, improve production efficiency, and ensure structural beauty. In short, ship steel structure welding equipment plays a vital role in ship manufacturing and maintenance, and is a key tool to ensure the safety of ship structure, reliable performance and efficient production.

[0003] After the existing ship steel structure welding equipment connects two steel structure welded parts, due to the need of welding, the welded parts are often flipped and moved. However, due to the difference in the docking position and shape of the welded parts, the docking position is offset after the movement, and even the welding part is cracked due to stress, which affects the welding quality. Summary of the invention

[0004] The invention discloses a special ship steel structure welding device and method, aiming to solve the technical problem that the existing special ship steel structure welding device in the background technology cannot maintain the stability of the butt joint position of the welded parts.

[0005] A special ship steel structure welding device proposed in the present invention comprises a base, a plurality of equally spaced fixed angle steels are fixedly connected to the outside of the base, a mounting platform is fixedly connected to the upper side of the base, two symmetrical annular seats are arranged above the mounting platform, a docking control module is arranged on the two annular seats, welding parts are arranged inside the two annular seats, the same annular welding module is arranged outside the two welding parts, and a welding gun is arranged on the annular welding module; The docking control module includes two symmetrical rectangular grooves, both of which are opened on the mounting platform, and support frames are slidably connected in the rectangular grooves, and the support frames are located below the annular seats on the same side, and the inner walls of the annular seats are fixedly connected with stabilizing seats, and the stabilizing seats are located outside the welded parts; The annular welding module comprises an annular frame 1 and annular frame 2.

[0006] By providing a base, a fixed angle steel, a mounting table, an annular seat, a welding part, a welding gun, a docking control module and an annular welding module, the device utilizes the docking control module to enable the device to always form a fixed and stable docking posture for the welding parts when docking the welding parts to form a weld, thereby reducing the impact of welding on the docking posture, avoiding rework, and improving the welding quality and welding efficiency of the device.

[0007] In a preferred embodiment, a reserved groove is provided on the upper side of the base, and the inner wall of the reserved groove is slidably connected to the outside of the support frame. A circular hole is provided on the two support frames, and the same bidirectional screw rod is arranged in the circular hole, and the external movability of the bidirectional screw rod is connected to two symmetrical fixed plates, and the upper sides of the two fixed plates are fixedly connected to the bottom of the mounting table; the bottom of the mounting table is fixedly connected to motor 1, and the output end of motor 1 is connected to one side of the bidirectional screw rod through a coupling, and the upper side of the support frame is in contact with the outside of the annular seat on the same side, and the support Two symmetrical notches are provided on the upper side of the frame, and the bottom inner walls of the notches are fixedly connected with hydraulic rods 1, and the output ends of the two hydraulic rods 1 on the same side are fixedly connected to the outside of the annular seat on the same side, and two symmetrical grooves are provided on the outside of the support frame; a plurality of the grooves are slidably connected with limit rods, and the upper sides of the two limit rods on the same side are fixedly connected to the outside of the annular seat on the same side, and the opposite sides of the two stable seats are movably connected with a rotating frame, and the outsides of the two support frames are connected with wing plates by bolts, and the upper sides of the wing plates The two wing plates are fixedly connected with two symmetrical bosses, and the two bosses on the same wing plate are movably connected with the same winding roller; the outsides of the two winding rollers are wound with steel wire ropes, and the ends of the steel wire ropes away from the winding rollers are fixedly connected with bosses, and the outsides of the two bosses are fixedly connected to the outsides of the rotating frames on the same side, and the upper sides of the two wing plates are fixedly connected with motor 2, and the output ends of motor 2 are connected to one side of the winding roller on the same side through a coupling, and four sliding grooves equidistantly distributed on the circumference are opened on the opposite sides of the two stable seats; the sliding Movable rods are slidably connected in the movable grooves, two stable seats are located outside the welding part on the same side, a rubber pad is fixedly connected to the side of the movable rod close to the welding part, the rubber pad is fitted with the side opposite to the welding part, a plurality of movable rods are fixedly connected to the short shaft on the side close to the rotating frame, and four circumferentially equidistantly distributed curved grooves are provided on the rotating frame, the inner walls of the curved grooves on the same side are slidably connected to the outside of the short shaft, the inner wall of the rotating frame is fixedly connected to a coil spring, and the end of the coil spring away from the rotating frame is fixedly connected to the outside of the stable seat on the same side.

[0008] By providing a docking control module, the docking control module uses a support frame and a stabilizing seat to enable the device to achieve rapid docking of welded parts, and uses a movable rod and a hydraulic rod to adjust the relative height of the two welded parts while ensuring the firm fixation of the welded parts, so that the device can obtain good adaptability when facing welded parts of different shapes.

[0009] In a preferred embodiment, a mounting seat is fixedly connected to the upper side of the mounting platform, and the mounting seat is located between the two annular seats. An opening is provided on the upper side of the mounting seat, and the inner walls on both sides of the opening are respectively fixedly connected to the outside of the annular frame one and the annular frame two, and grooves are provided on the opposite sides of the annular frame one and the annular frame two, and the same moving platform is slidably connected in the two grooves; an orifice is provided on the mobile platform, and a hydraulic rod two is fixedly connected to the inner wall of the orifice, and the output end of the hydraulic rod two is fixedly connected to a mechanical arm, and the welding gun is located at an end of the mechanical arm away from the hydraulic rod two; an extension plate is fixedly connected to the side of the mobile platform away from the welded part, and a motor three is fixedly connected to the side of the extension plate away from the hydraulic rod two, and the output end of the motor three is connected to a gear through a coupling, and an outer gear ring is fixedly connected to the outside of the annular frame two, and the outer gear ring is meshed with the gear.

[0010] By providing an annular welding module, the annular welding module utilizes a movable table, gears and an outer gear ring to enable the welding gun on the device to achieve annular welding around the weldment, thereby avoiding the need to flip the weldment during the welding process to complete the welding process and ensuring the continuity of the welding.

[0011] A special ship steel structure welding method, using the special ship steel structure welding equipment as described above, comprises the following steps: Step 1: Adjust the angles of the two welded parts to be welded and place them into the stable seats on the two annular seats. Use the docking control module to adjust and control the spacing between the welding positions and the docking height of the two welded parts so that the two welded parts can be docked at the welding positions. Step 2: After the butt joint is completed, the welding gun on the annular welding module is used to weld the welding positions formed on the two welded parts while performing circular motion.

[0012] From the above, it can be seen that the special ship steel structure welding equipment provided by the present invention has the effect of enabling the device to always form a fixed and stable docking posture for the welded parts when the welded parts are butt-jointed to form a weld, thereby reducing the impact of welding on the docking posture, avoiding rework, and improving the welding quality and welding efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a special ship steel structure welding equipment proposed by the present invention; Figure 2 This is a schematic cross-sectional view of a special ship steel structure welding device proposed by the present invention; Figure 3 This is a structural schematic diagram of a docking control module of a special ship steel structure welding device proposed by the present invention; Figure 4This is a schematic diagram of the structure of a stabilizing seat of a special ship steel structure welding device proposed by the present invention; Figure 5 This is a schematic diagram of the rotating frame structure of a special ship steel structure welding equipment proposed by the present invention; Figure 6 This is a schematic structural diagram of a ring welding module of a special ship steel structure welding equipment proposed by the present invention; Figure 7 The present invention is a schematic diagram of the structure of a mobile platform of a special ship steel structure welding equipment.

[0014] In the figure: 1, base; 2, fixed angle steel; 3, mounting table; 4, annular seat; 5, welding parts; 6, welding gun; 7, docking control module; 701, reserved slot; 702, fixed plate; 703, bidirectional screw rod; 704, support frame; 705, motor 1; 706, rectangular slot; 707, hydraulic rod 1; 708, cutting slot; 709, limit rod; 710, stable seat; 711, rotating frame; 712, wing plate; 713, winding roller; 714, wire rope; 715, motor 2; 716, sliding groove; 717, movable rod; 718, rubber pad; 719, short shaft; 720, curved groove; 721, coil spring; 8, annular welding module; 801, mounting seat; 802, annular frame 1; 803, annular frame 2; 804, groove; 805, moving platform; 806, hydraulic rod 2; 807, mechanical arm; 808, motor 3; 809, gear; 810, outer gear ring. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] The invention discloses a special ship steel structure welding device which is mainly used in the scenario where the existing special ship steel structure welding device cannot maintain the stability of the butt joint position of the welded parts.

[0017] Reference Figure 1-7 A special ship steel structure welding device comprises a base 1, a plurality of equally spaced fixed angle steels 2 are connected to the outside of the base 1 by bolts, and a mounting platform 3 is connected to the upper side of the base 1 by bolts, two symmetrical annular seats 4 are arranged above the mounting platform 3, a docking control module 7 is arranged on the two annular seats 4, and welding pieces 5 are arranged inside the two annular seats 4, the same annular welding module 8 is arranged on the outside of the two welding pieces 5, and a welding gun 6 is arranged on the annular welding module 8; The docking control module 7 includes two symmetrical rectangular grooves 706, both of which are opened on the mounting platform 3, and the rectangular grooves 706 are slidably connected with support frames 704, and the support frames 704 are located below the annular seat 4 on the same side, and the inner wall of the annular seat 4 is connected with a stabilizing seat 710 by bolts, and the stabilizing seat 710 is located outside the welding piece 5; The annular welding module 8 includes an annular frame 1 802 and an annular frame 2 803 .

[0018] Specifically, the two welding parts 5 to be welded are adjusted at an angle and placed in the stable seats 710 on the two annular seats 4. The docking control module 7 is used to adjust and control the spacing between the welding positions on the two welding parts 5 and the docking height, so that the two welding parts 5 can complete the docking of the welding positions. After the docking is completed, the welding gun 6 on the annular welding module 8 is used to weld the welding positions formed on the two welding parts 5 while performing a circular motion. The device utilizes the docking control module 7 to enable the device to always form a fixed and stable docking posture for the welding parts 5 when docking the welding parts 5 to form a weld, thereby reducing the impact of welding on the docking posture, avoiding rework, and improving the welding quality and welding efficiency of the device.

[0019] Reference Figure 3 , Figure 4 and Figure 5In a preferred embodiment, a reserved groove 701 is provided on the upper side of the base 1, and the inner wall of the reserved groove 701 is slidably connected to the outside of the support frame 704. A circular hole is provided on the two support frames 704, and the same bidirectional screw rod 703 is arranged in the circular hole. The outside of the bidirectional screw rod 703 is rotatably connected to two symmetrical fixed plates 702 through bearings, and the upper sides of the two fixed plates 702 are connected to the bottom of the mounting platform 3 by bolts; the bottom of the mounting platform 3 is connected to a motor 1 705 by bolts, and the output end of the motor 1 705 is connected to one side of the bidirectional screw rod 703 through a coupling, and the upper side of the support frame 704 is in contact with the outside of the annular seat 4 on the same side, and the support frame 704 is Two symmetrical notches are provided on the upper side, and the bottom inner walls of the notches are connected with hydraulic rods 707 by bolts, and the output ends of the two hydraulic rods 707 on the same side are connected with the outside of the annular seat 4 on the same side by bolts, and the outside of the support frame 704 is provided with two symmetrical grooves 708; the plurality of grooves 708 are slidably connected with limit rods 709, and the upper sides of the two limit rods 709 on the same side are connected with the outside of the annular seat 4 on the same side by bolts, and the opposite sides of the two stable seats 710 are rotatably connected with a rotating frame 711 through a bearing, and the outsides of the two support frames 704 are connected with wing plates 712 by bolts, and the upper sides of the wing plates 712 are connected with Two symmetrical bosses, two bosses on the same wing plate 712 are rotatably connected to the same winding roller 713 through bearings; the outsides of the two winding rollers 713 are wound with steel wire ropes 714, and the ends of the steel wire ropes 714 away from the winding rollers 713 are connected to bosses through bolts, and the outsides of the two bosses are connected to the outside of the rotating frame 711 on the same side through bolts, and the upper sides of the two wing plates 712 are connected to motor 2 715 through bolts, and the output ends of motor 2 715 are connected to one side of the winding roller 713 on the same side through a coupling, and the opposite sides of the two stable seats 710 are provided with four sliding grooves 716 distributed equidistantly around the circumference; the sliding grooves 716 are slidably connected with movable The movable rod 717 and the two stable seats 710 are both located outside the welding part 5 on the same side. The side of the movable rod 717 close to the welding part 5 is connected to the rubber pad 718 by bolts, and the rubber pad 718 is fitted with the side opposite to the welding part 5. The sides of the multiple movable rods 717 close to the rotating frame 711 are connected to the short shaft 719 by bolts, and the rotating frame 711 is provided with four circumferentially equidistantly distributed curved grooves 720, the inner walls of the curved grooves 720 on the same side are slidably connected to the outside of the short shaft 719, the inner walls of the rotating frame 711 are connected to the coil spring 721 by bolts, and the end of the coil spring 721 away from the rotating frame 711 is connected to the outside of the stable seat 710 on the same side by bolts.

[0020] Specifically, after the welding part 5 is placed in the stable seat 710 on the annular seat 4, the motor 2 715 is started, and the motor 2 715 drives the winding roller 713 to rotate, so that the winding roller 713 starts to reel in the wire rope 714, and the wire rope 714 pulls the rotating frame 711 to rotate the rotating frame 711, so that the curved groove 720 overcomes the torsion of the coil spring 721 and pushes the movable rod 717 connected to the short shaft 719 to move in the direction of the welding part 5, so that the rubber pad 718 fits the outside of the welding part 5, and finally the movable rod 717 moves the welding part 5. 5 is pushed to the center position of the stable seat 710. After the two welding parts 5 are fixed, the motor 1 705 is started, and the motor 1 705 drives the bidirectional screw rod 703 to rotate, so that the two support frames 704 on the bidirectional screw rod 703 move to the center position of the mounting platform 3. After the distance between the two welding parts 5 meets the welding requirement, the motor 1 705 is turned off, and the hydraulic rod 1 707 on the two support frames 704 is started. The hydraulic rod 1 707 drives the two annular seats 4 to rise and fall, so that the two welding parts 5 move to the designed welding position.

[0021] In a specific application scenario, the docking control module 7 is mainly suitable for the docking control link in the docking control process, that is, the docking control module 7 uses the support frame 704 and the stabilizing seat 710 to enable the device to quickly dock the welded part 5, and uses the movable rod 717 and the hydraulic rod 707 to ensure the firm fixation of the welded part 5 while adjusting the relative height of the two welded parts 5, so that the device can obtain good adaptability when facing welded parts 5 of different shapes.

[0022] Reference Figure 6 and Figure 7 In a preferred embodiment, the upper side of the mounting platform 3 is connected with a mounting seat 801 by bolts, and the mounting seat 801 is located between the two annular seats 4. An opening is provided on the upper side of the mounting seat 801, and the inner walls on both sides of the opening are respectively connected to the outside of the annular frame 1 802 and the annular frame 2 803 by bolts. A groove 804 is provided on the opposite side of the annular frame 1 802 and the annular frame 2 803, and the same moving platform 805 is slidably connected in the two grooves 804; the moving platform 805 is provided with an orifice, and the inner wall of the orifice is connected by bolts. It is connected to hydraulic rod 2 806, the output end of hydraulic rod 2 806 is connected to mechanical arm 807 by bolts, and welding gun 6 is located at the end of mechanical arm 807 away from hydraulic rod 2 806; the side of movable platform 805 away from welding part 5 is connected to extension plate by bolts, the side of extension plate away from hydraulic rod 2 806 is connected to motor 3 808 by bolts, the output end of motor 3 808 is connected to gear 809 by coupling, and the outside of annular frame 2 803 is connected to outer gear ring 810 by bolts, and outer gear ring 810 is meshed with gear 809.

[0023] Specifically, after the two welding parts 5 are connected, the motor 3 808 is started, and the motor 3 808 drives the gear 809 meshing with the outer gear ring 810 to rotate, so that the movable platform 805 slides in the groove 804, so that the movable platform 805 performs a circular motion with the welding part 5 as the axis, and the mechanical arm 807 and the hydraulic rod 2 806 are started, and the hydraulic rod 2 806 and the mechanical arm 807 are extended and contracted, so that the welding gun 6 on the mechanical arm 807 can always fit in the welding position, thereby completing the welding of the two welding parts 5.

[0024] In a specific application scenario, the annular welding module 8 is mainly suitable for the annular welding link in the annular welding process, that is, the annular welding module 8 uses the movable table 805, the gear 809 and the outer gear ring 810 to enable the welding gun 6 on the device to realize annular welding around the weldment 5, thereby avoiding the need to flip the weldment 5 to complete the welding process during the welding process, thereby ensuring the continuity of the welding.

[0025] A special ship steel structure welding method, using the special ship steel structure welding equipment as described above, comprises the following steps: Step 1: After adjusting the angles of the two welding pieces 5 to be welded, place them into the stable seats 710 on the two annular seats 4, and use the docking control module 7 to adjust and control the spacing and docking height of the welding positions on the two welding pieces 5, so that the two welding pieces 5 complete the docking of the welding positions (after the welding pieces 5 are placed in the stable seats 710 on the annular seat 4, start the second motor 715, the second motor 715 drives the winding roller 713 to rotate, so that the winding roller 713 starts to reel in the wire rope 714, and the wire rope 714 pulls the rotating frame 711 to rotate the rotating frame 711, so that the curved groove 720 overcomes the torsion of the coil spring 721 and pushes the movable body connected to the short shaft 719 The rod 717 moves toward the welding piece 5, so that the rubber pad 718 fits with the outside of the welding piece 5, and finally the movable rod 717 pushes the welding piece 5 to the center position of the stable seat 710. After the two welding pieces 5 are fixed, the motor 705 is started, and the motor 705 drives the bidirectional screw rod 703 to rotate, so that the two support frames 704 on the bidirectional screw rod 703 move toward the center position of the mounting platform 3. After the distance between the two welding pieces 5 meets the welding requirements, the motor 705 is turned off, and the hydraulic rod 707 on the two support frames 704 is started. The hydraulic rod 707 drives the two annular seats 4 to rise and fall, so that the two welding pieces 5 move to the designed welding position); Step 2. After the docking is completed, use the welding gun 6 on the annular welding module 8 to weld the welding positions formed on the two welding parts 5 while performing circular motion (after the two welding parts 5 are docked, start the motor three 808, and the motor three 808 drives the gear 809 meshing with the outer gear ring 810 to rotate, so that the movable platform 805 slides in the groove 804, so that the movable platform 805 performs a circular motion with the welding part 5 as the axis, start the robot arm 807 and the hydraulic rod two 806, and the hydraulic rod two 806 and the robot arm 807 extend and contract, so that the welding gun 6 on the robot arm 807 can always fit in the welding position, thereby completing the welding of the two welding parts 5).

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A special ship steel structure welding device, comprising a base (1), characterized in that: The outside of the base (1) is fixedly connected to a plurality of equally spaced fixed angle steels (2), and the upper side of the base (1) is fixedly connected to a mounting platform (3), two symmetrical annular seats (4) are arranged above the mounting platform (3), both annular seats (4) are provided with docking control modules (7), and both annular seats (4) are provided with welding parts (5), the outside of the two welding parts (5) is provided with the same annular welding module (8), and the annular welding module (8) is provided with a welding gun (6); The docking control module (7) comprises two symmetrical rectangular grooves (706), the two rectangular grooves (706) are both opened on the mounting platform (3), the rectangular grooves (706) are both slidably connected with a support frame (704), the support frame (704) is located below the annular seat (4) on the same side, the inner wall of the annular seat (4) is fixedly connected with a stabilizing seat (710), and the stabilizing seat (710) is located outside the welding piece (5); The annular welding module (8) comprises an annular frame 1 (802) and annular frame 2 (803).

2. A special ship steel structure welding equipment according to claim 1, characterized in that: A reserved groove (701) is provided on the upper side of the base (1), and the inner wall of the reserved groove (701) is slidably connected to the outside of the support frame (704). A circular hole is provided on the two support frames (704), and the same bidirectional screw rod (703) is arranged in the circular hole. The outside of the bidirectional screw rod (703) is movably connected to two symmetrical fixing plates (702), and the upper sides of the two fixing plates (702) are fixedly connected to the bottom of the mounting platform (3).

3. A special ship steel structure welding equipment according to claim 2, characterized in that: The bottom of the mounting platform (3) is fixedly connected to a motor 1 (705), the output end of the motor 1 (705) is connected to one side of the bidirectional screw rod (703) via a coupling, the upper side of the support frame (704) is fitted with the outside of the annular seat (4) on the same side, the upper side of the support frame (704) is provided with two symmetrical notches, the bottom inner walls of the notches are fixedly connected to hydraulic rods 1 (707), the output ends of the two hydraulic rods 1 (707) on the same side are fixedly connected to the outside of the annular seat (4) on the same side, and the outside of the support frame (704) is provided with two symmetrical cut grooves (708).

4. A special ship steel structure welding equipment according to claim 3, characterized in that: A plurality of the cutting grooves (708) are slidably connected to limit rods (709), the upper sides of the two limit rods (709) on the same side are fixedly connected to the outside of the annular seat (4) on the same side, the two stabilizing seats (710) are movably connected to a rotating frame (711) on the opposite side, and the outsides of the two support frames (704) are connected to wing plates (712) by bolts, the upper sides of the wing plates (712) are fixedly connected to two symmetrical bosses, and the same winding roller (713) is movably connected between the two bosses on the same wing plate (712).

5. A special ship steel structure welding equipment according to claim 4, characterized in that: The outsides of the two winding rollers (713) are both wound with steel wire ropes (714), and one end of the steel wire ropes (714) away from the winding rollers (713) is fixedly connected to a convex seat, and the outsides of the two convex seats are both fixedly connected to the outside of the rotating frame (711) on the same side, and the upper sides of the two wing plates (712) are both fixedly connected to motor 2 (715), and the output end of motor 2 (715) is connected to one side of the winding roller (713) on the same side through a coupling, and four sliding grooves (716) equidistantly distributed around the circumference are opened on the opposite sides of the two stabilizing seats (710).

6. A special ship steel structure welding equipment according to claim 5, characterized in that: The sliding grooves (716) are all slidably connected with movable rods (717), the two stable seats (710) are both located outside the welding piece (5) on the same side, the movable rods (717) are fixedly connected with a rubber pad (718) on one side close to the welding piece (5), and the rubber pad (718) is in contact with the side opposite to the welding piece (5), and the multiple movable rods (717) are fixedly connected with a short shaft (719) on one side close to the rotating frame (711), and the rotating frame (711) is provided with four circumferentially equidistantly distributed curved grooves (720), the inner walls of the curved grooves (720) on the same side are slidably connected with the outside of the short shaft (719), the inner walls of the rotating frame (711) are fixedly connected with a coil spring (721), and the end of the coil spring (721) away from the rotating frame (711) is fixedly connected to the outside of the stable seat (710) on the same side.

7. A special ship steel structure welding equipment according to claim 6, characterized in that: The upper side of the mounting platform (3) is fixedly connected to a mounting seat (801), the mounting seat (801) is located between the two annular seats (4), an opening is provided on the upper side of the mounting seat (801), the inner walls on both sides of the opening are respectively fixedly connected to the outside of the annular frame 1 (802) and the annular frame 2 (803), grooves (804) are provided on opposite sides of the annular frame 1 (802) and the annular frame 2 (803), and the same moving platform (805) is slidably connected in the two grooves (804).

8. The special ship steel structure welding equipment according to claim 7, characterized in that: The movable platform (805) is provided with an opening, the inner wall of the opening is fixedly connected to a second hydraulic rod (806), the output end of the second hydraulic rod (806) is fixedly connected to a mechanical arm (807), and the welding gun (6) is located at an end of the mechanical arm (807) away from the second hydraulic rod (806).

9. A special ship steel structure welding equipment according to claim 8, characterized in that: An extension plate is fixedly connected to the side of the movable platform (805) away from the welded part (5), and a motor three (808) is fixedly connected to the side of the extension plate away from the hydraulic rod two (806). The output end of the motor three (808) is connected to a gear (809) via a coupling, and an external gear ring (810) is fixedly connected to the outside of the annular frame two (803), and the external gear ring (810) is meshed with the gear (809).

10. A method for welding special ship steel structure parts, using the special ship steel structure parts welding equipment as claimed in claim 9, characterized in that: The steps include: Step 1: After adjusting the angles of the two welded parts (5) to be welded, place them into the stabilizing seats (710) on the two annular seats (4), and use the docking control module (7) to adjust and control the spacing between the welding positions and the docking height of the two welded parts (5) so that the two welded parts (5) can be docked at the welding positions; Step 2: After the butt joint is completed, the welding gun (6) on the annular welding module (8) is used to weld the welding positions formed on the two welding parts (5) while performing a circular motion.

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