Ship pipeline assembly welding process

Abstract

The invention relates to the technical field of welding processes, in particular to a ship pipeline assembly welding process. The ship pipeline group welding equipment comprises a diameter adaptation assembly, the diameter adaptation assembly comprises a portal frame, two supporting rods, a roller, a transverse plate, a hydraulic adjusting assembly, a first hydraulic telescopic rod and a second hydraulic telescopic rod, the portal frame is fixedly installed at the top of a fixed supporting table, and the two supporting rods are rotationally connected to the side portion of the portal frame. The opposite sides of the two supporting rods are rotationally connected with a roller, two hydraulic adjusting assemblies which are symmetrically arranged are fixedly installed at the top of the portal frame, and a transverse plate is arranged at the bottoms of the hydraulic adjusting assemblies. According to the welding device, the circle center of the fixed ring can be located on the axis of the ship pipeline all the time, meanwhile, the extension length of the second hydraulic telescopic rod is adjusted, the second hydraulic telescopic rod can make contact with the ship pipeline, ship pipelines of different sizes are positioned, and stable welding is achieved after the reducer pipe and the ship pipeline are in butt joint.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding process for ship pipeline assemblies. Background Art

[0002] Ship pipelines are pipelines on ships, including power system related pipelines and life system pipelines. In the ship pipeline system, when different pipelines need to be connected together, such as pipelines of different diameters or pipelines of different directions in the same system, it is necessary to weld the pipelines. For example, in the fuel delivery system, when the large-diameter pipeline leading from the main fuel storage tank is connected with the small-diameter pipeline leading to the main engine, welding is required to ensure the smooth delivery of fuel and the sealing of the connection. Ships will be affected by various forces during navigation, such as vibration of the hull, impact of seawater, etc. The welded pipeline connection is firm and can withstand these external forces to ensure the integrity and stability of the pipeline system.

[0003] After searching, the patent with announcement number CN118438134B proposes a ship pipeline welding positioning tool, including an inner support mechanism, which includes a cylindrical block, an outer push mechanism, an intermediate tube and four struts. The cylindrical block has a mounting hole coaxially arranged therewith on its circular surface, one end of the intermediate tube is fixed in the mounting hole, and the four struts are all arranged on the outside of the intermediate tube. The four struts are distributed in an equidistant ring with the central axis of the intermediate tube as the center of the circle. The outer push mechanism is arranged in the intermediate tube and is used to push the four struts synchronously outward and move along a straight line; two inner buckle mechanisms, the inner buckle mechanism includes an inner buckle plate and a driving mechanism, the inner buckle plate is an arc plate, and the two driving mechanisms are respectively arranged on one end of two aligned support plates. The positioning tool of the present invention can assist in positioning, and at the same time, there is no obstruction at the welding position, and no secondary clamping is required, thereby improving the welding power.

[0004] However, when welding two pipes of different diameters on a ship pipeline, a reducer is required. When welding ship pipelines of different diameters, it is necessary to first measure their diameters, find the position of the axis of the ship pipeline, and then make the axis line of the reducer and the axis line of the ship pipeline on the same straight line. The pipe diameters on the same ship are different, and each time the pipe group is welded, the pipe diameter needs to be measured for adjustment to ensure stable pipe support positioning. Summary of the invention

[0005] The purpose of the present invention is to provide a ship pipeline assembly welding process to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is as follows:

[0007] A ship pipeline assembly welding process comprises the following steps:

[0008] S1. The ship pipeline is towed to the ship pipeline assembly welding equipment through the towing equipment, and matching welding materials are selected according to the material of the pipeline;

[0009] S2. After transporting the ship pipeline to be welded to the ship pipeline assembly welding equipment, arc welding is performed on the ship pipeline;

[0010] The ship pipeline assembly welding equipment includes a fixed support platform, a support pad is fixedly installed on the side of the fixed support platform, and the ship pipeline is placed on the top of the fixed support platform;

[0011] A diameter adapting assembly, the diameter adapting assembly comprises a gantry, a support rod, a roller, a cross plate, a hydraulic adjustment assembly, a first hydraulic telescopic rod and a second hydraulic telescopic rod. The gantry is fixedly installed on the top of the fixed support platform, the side of the gantry is rotatably connected to the support rod, two support rods are provided, and the two sides of the two support rods facing each other are rotatably connected to the roller. Two symmetrically arranged hydraulic adjustment assemblies are fixedly installed on the top of the gantry, a cross plate is provided at the bottom of the hydraulic adjustment assembly, the roller rolls at the bottom of the cross plate, and the two hydraulic adjustment assemblies are respectively connected to the first hydraulic telescopic rod and the second hydraulic telescopic rod whose end is connected to the welding head;

[0012] A surrounding welding assembly, the surrounding welding assembly comprises a fixed ring and a gear ring, the fixed ring is internally rotatably connected to the gear ring, and the second hydraulic telescopic rod is fixedly mounted on the inner wall of the gear ring;

[0013] A lifting and docking platform for placing a reducer is fixedly installed on the top of the first hydraulic telescopic rod, and a fixed ring for welding the reducer and the ship pipeline is arranged on the top of the lifting and docking platform.

[0014] Optionally, three second hydraulic telescopic rods are provided and are distributed at equal angles in a ring shape with respect to the gear ring. The joint between the ship pipeline and the reducer is in the same plane as the three second hydraulic telescopic rods. The maximum movement angle of the second hydraulic telescopic rod is 121°.

[0015] Optionally, the hydraulic adjustment assembly includes a connecting rod, a hydraulic oil cylinder and a piston, the bottom of the hydraulic oil cylinder is fixedly connected to the gantry, the interior of the hydraulic oil cylinder is slidably connected with a piston, the bottom of the piston is fixedly installed with a connecting rod that penetrates into the interior of the hydraulic oil cylinder, and the bottom of the connecting rod is fixedly connected to the cross plate.

[0016] Optionally, two types of hydraulic oil cylinders are provided, one type of hydraulic oil cylinder has a liquid outlet located near the top position, and the other type of hydraulic oil cylinder has a liquid outlet located near the bottom position. The hydraulic oil cylinder with a liquid outlet located near the top position is connected to the first hydraulic telescopic rod, and the hydraulic oil cylinder with a liquid outlet located near the bottom position is connected to the second hydraulic telescopic rod. When the piston moves, the extended length of the first hydraulic telescopic rod is half of the moving distance of the piston, and the retracted length of the second hydraulic telescopic rod is equal to the moving distance of the piston.

[0017] Optionally, a guide rod is fixedly installed on the top of the cross plate and at a position offset from the connecting rod, the guide rod passes through the gantry, a limit plate is fixedly installed on the top of the gantry, and a first torque spring is elastically connected to the rotational connection between the support rod and the gantry.

[0018] Optionally, the surround welding assembly also includes a bending rod, a disc, a brush and a clip. The bending rod is fixedly installed on the side of the second hydraulic telescopic rod, the end of the bending rod is rotatably connected to the brush, the disc is fixedly installed on the side of the brush, a notch is provided on the disc, and the clip is fixedly installed on the side of the bending rod, and the clip is clamped with the notch on the disc.

[0019] Optionally, the bristles on the brush are in contact with the ship's pipes and reducers, the connection between the brush body and the bristles rests against the ship's pipes and reducers, the gear ring rotates counterclockwise, a second torque spring is elastically connected between the disc and the bending rod, the gear ring is meshed with a gear rotatably connected to the lifting and docking platform, and a motor installed inside the lifting and docking platform is fixedly installed at the center of the gear.

[0020] Optionally, a support assembly is provided on the top of the lifting and docking platform, and the support assembly includes an insertion column, an intermediate block, a third hydraulic telescopic rod, a push ring, an umbrella frame and an arc plate. The end of the insertion column is fixedly connected to the lifting and docking platform, the intermediate block is fixedly installed in the middle of the insertion column, the third hydraulic telescopic rod is fixedly installed at both ends of the intermediate block, the end of the third hydraulic telescopic rod is fixedly installed with a push ring, the end of the push ring is hinged with an umbrella frame hinged to the end of the insertion column, the end of the umbrella frame is slidably connected to the arc plate, the arc plate is in contact with the inner wall of the ship pipeline and the reducer, and the end of the reducer is in contact with the lifting and docking platform.

[0021] Optionally, the arc plate is slidably connected to a press-in plate inside, a hydraulic cylinder pipe connected to the hydraulic cylinder is fixedly installed inside the press-in plate, the end of the hydraulic cylinder pipe is connected to the third hydraulic telescopic rod, and a push-type valve is fixedly installed between the arc plate and the press-in plate.

[0022] Optionally, a return spring is elastically connected between the arc plate and the push-in plate and at a position offset from the push-type valve, and a limit block is fixedly installed inside the arc plate. When the push-type valve is fully retracted, the push-in plate contacts the limit block.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention rotates the support rod through the ship pipeline, so that the hydraulic oil in the hydraulic oil cylinder is exchanged with the hydraulic oil in the first hydraulic telescopic rod and the second hydraulic telescopic rod, so that the center of the fixed ring can always be located on the axis of the ship pipeline, so that the distance between the ship pipeline and each second hydraulic telescopic rod is equal, and at the same time, the extension length of the second hydraulic telescopic rod is adjusted so that the second hydraulic telescopic rod can contact the ship pipeline, so that ship pipelines of different sizes can be adapted to position ship pipelines of different sizes, so that the reducer and the ship pipeline can be stably welded after docking.

[0025] According to the present invention, after the second hydraulic telescopic rod is extended, the bending rod contacts the ship pipeline and the reducer as the second hydraulic telescopic rod moves. During the process of rotation welding of the welding head at the end of the second hydraulic telescopic rod, the brush removes dust on the surface of the ship pipeline and the reducer to avoid affecting the welding quality. For particles adhering to the surface of the ship pipeline and the reducer, the resistance of the clip to the disc is used to clean the attached objects. When the adhesion force of the attached objects is greater than the resistance of the clip to the disc, the disc will break away from the restriction of the clip to avoid damage to the pipeline caused by forced cleaning.

[0026] When the arc plate contacts the inner wall of the ship pipeline and the reducer, the press-in plate is pressed into the arc plate, and the press-in plate and the arc plate compress the reset spring and make the push-type valve close the hydraulic oil cylinder pipe, so that the umbrella frame stops further unfolding, so that the ring formed by the multiple arc plates after the umbrella frame is unfolded is adapted to the inner diameter of the ship pipeline and the reducer, and the arc plate supports and stabilizes the docking of the ship pipeline and the reducer, so as to avoid the tilt caused by the different diameters at both ends of the reducer to affect the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of a lifting docking platform according to an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of a drum structure according to an embodiment of the present invention;

[0030] Figure 4 A schematic cross-sectional view of a hydraulic oil cylinder according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of a front cross-sectional structure of a fixed ring according to an embodiment of the present invention;

[0032] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 7 This is a schematic diagram of the structure of an insertion column according to an embodiment of the present invention;

[0034] Figure 8 for Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0035] Fig. 9 This is a schematic diagram of the left-side sectional structure of an arc plate according to an embodiment of the present invention.

[0036] In the figure: 1. fixed support platform; 2. support pad; 3. lifting docking platform; 4. diameter adapter assembly; 41. gantry; 42. support rod; 43. roller; 44. cross plate; 45. guide rod; 46. connecting rod; 47. hydraulic oil cylinder; 48. piston; 49. first hydraulic telescopic rod; 410. second hydraulic telescopic rod; 411. first torque spring; 5. surrounding welding assembly; 51. fixed ring; 52. gear ring; 53. gear; 54. bending rod; 55. disc; 56. brush; 57. clip; 58. second torque spring; 6. support assembly; 61. insertion column; 62. middle block; 63. third hydraulic telescopic rod; 64. push ring; 65. umbrella frame; 66. arc plate; 67. press plate; 68. reset spring; 69. hydraulic cylinder pipe; 610. push valve. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0038] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0039] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Embodiment 1

[0043] This embodiment provides a ship pipeline assembly welding process, including the following steps:

[0044] S1. The ship pipeline is towed to the ship pipeline assembly welding equipment through the towing equipment, and matching welding materials are selected according to the material of the pipeline;

[0045] S2. After transporting the ship pipeline to be welded to the ship pipeline assembly welding equipment, arc welding is performed on the ship pipeline;

[0046] like Figure 1 As shown, the ship pipeline assembly welding equipment includes a fixed support platform 1, a support pad 2 is fixedly installed on the side of the fixed support platform 1, and the ship pipeline is placed on the top of the fixed support platform 1;

[0047] like Figure 2-Figure 5As shown, a diameter adaptation component 4 is provided on the top of the fixed support platform 1, and the diameter adaptation component 4 includes a gantry 41, a support rod 42, a roller 43, a cross plate 44, a hydraulic adjustment component, a first hydraulic telescopic rod 49 and a second hydraulic telescopic rod 410. The gantry 41 is fixedly installed on the top of the fixed support platform 1, and the side of the gantry 41 is rotatably connected to the support rod 42. Two support rods 42 are provided, and the two sides of the two support rods 42 facing each other are rotatably connected to the roller 43, and the roller 43 rolls on the bottom of the cross plate 44. The two hydraulic adjustment components are respectively connected to the first hydraulic telescopic rod 49 and the second hydraulic telescopic rod 410 with the end connected to the welding head. The top of the first hydraulic telescopic rod 49 is fixedly installed with a lifting docking platform 3 for placing a reducer, and the rotating connection between the support rod 42 and the gantry 41 is elastically connected with a first torque spring 411.

[0048] like Figure 2 and Figure 5 As shown, a surrounding welding assembly 5 is arranged on the top of the lifting docking platform 3. The surrounding welding assembly 5 includes a fixed ring 51 and a gear ring 52. The internal rotation of the fixed ring 51 is connected to the gear ring 52, and the second hydraulic telescopic rod 410 is fixedly installed on the inner wall of the gear ring 52.

[0049] After being pushed to the top of the fixed support platform 1 by the ship pipeline, the ship pipeline pushes the roller 43, so that the roller 43 drives the support rod 42 to rotate and compress the first torque spring 411, and the roller 43 pushes the cross plate 44 upward. The hydraulic oil in the hydraulic adjustment assembly, the first hydraulic telescopic rod 49, and the second hydraulic telescopic rod 410 are transferred to each other by the movement of the cross plate 44, so that the height of the fixed ring 51 is increased, and the center of the fixed ring 51 is moved to the axis of the ship pipeline, so that the second hydraulic telescopic rod 410 rotates to weld the ship pipeline and the reducer, and the second hydraulic telescopic rod 410 shrinks to adapt to the diameter of the ship pipeline.

[0050] There are three second hydraulic telescopic rods 410, which are distributed in a circular manner with equal angles about the gear ring 52. The joint between the ship pipeline and the reducer is in the same plane as the three second hydraulic telescopic rods 410. The maximum movement angle of the second hydraulic telescopic rod 410 is 121°. By limiting the welding angle, it is avoided that the welding angle exceeds 360° too much, resulting in excessive welding, time consumption and waste of welding materials. At the same time, the rotation angle is three degrees larger than 360° to prevent leakage welding.

[0051] Two symmetrically arranged hydraulic adjustment components are fixedly installed on the top of the gantry 41, and the hydraulic adjustment components include a connecting rod 46, a hydraulic oil cylinder 47 and a piston 48. The bottom of the hydraulic oil cylinder 47 is fixedly connected to the gantry 41, and the piston 48 is slidably connected inside the hydraulic oil cylinder 47. The bottom of the piston 48 is fixedly installed with a connecting rod 46 that penetrates into the interior of the hydraulic oil cylinder 47, and the bottom of the connecting rod 46 is fixedly connected to the cross plate 44.

[0052] There are two types of hydraulic oil cylinders 47, one of which has a liquid outlet near the top, and the other of which has a liquid outlet near the bottom. The hydraulic oil cylinder 47 with a liquid outlet near the top is connected to the first hydraulic telescopic rod 49, and the hydraulic oil cylinder 47 with a liquid outlet near the bottom is connected to the second hydraulic telescopic rod 410. When the piston 48 moves, the extended length of the first hydraulic telescopic rod 49 is half of the moving distance of the piston 48, and the retracted length of the second hydraulic telescopic rod 410 is equal to the moving distance of the piston 48.

[0053] When the diameter of the ship's pipeline changes, the height of the axis line of the ship's pipeline rises by half of the diameter change, so that the center of the fixed ring 51 can always be located on the axis line of the ship's pipeline, thereby making the distance between the ship's pipeline and each second hydraulic telescopic rod 410 equal, and at the same time adjusting the extension length of the second hydraulic telescopic rod 410 so that the second hydraulic telescopic rod 410 can contact the ship's pipeline.

[0054] In this embodiment, the support rod 42 is rotated through the ship pipeline, so that the hydraulic oil in the hydraulic oil cylinder 47 is exchanged with the hydraulic oil in the first hydraulic telescopic rod 49 and the second hydraulic telescopic rod 410, so that the center of the fixed ring 51 can always be located on the axis of the ship pipeline, so that the distance between the ship pipeline and each second hydraulic telescopic rod 410 is equal, and at the same time, the extension length of the second hydraulic telescopic rod 410 is adjusted so that the second hydraulic telescopic rod 410 can contact the ship pipeline, so that ship pipelines of different sizes can be adapted to position ship pipelines of different sizes.

[0055] Embodiment 2

[0056] Based on the first embodiment, this embodiment proposes a ship pipeline assembly welding process, such as Figure 5 and Figure 6 As shown, the surround welding assembly 5 also includes a bending rod 54, a disc 55, a brush 56 and a clip 57. The bending rod 54 is fixedly installed on the side of the second hydraulic telescopic rod 410, and the end of the bending rod 54 is rotatably connected to the brush 56. The disc 55 is fixedly installed on the side of the brush 56, and a notch is opened on the disc 55. The clip 57 is fixedly installed on the side of the bending rod 54, and the clip 57 is clamped with the notch on the disc 55.

[0057] When the second hydraulic telescopic rod 410 is extended, the bending rod 54 contacts the ship's pipe and reducer as the second hydraulic telescopic rod 410 moves. During the rotation welding process of the welding head at the end of the second hydraulic telescopic rod 410, the brush 56 removes dust on the surface of the ship's pipe and reducer. For particles adhering to the surface of the ship's pipe and reducer, the resistance of the clip 57 to the disc 55 is used to clean the attachments.

[0058] The bristles on the brush 56 are in contact with the ship's pipe and reducer, and the connection between the main body of the brush 56 and the bristles rests on the ship's pipe and reducer. The gear ring 52 rotates counterclockwise, and a second torque spring 58 is elastically connected between the disk 55 and the bending rod 54. The gear ring 52 is meshedly connected with a gear 53 that is rotatably connected to the lifting and docking platform 3. A motor installed inside the lifting and docking platform 3 is fixedly installed at the center of the gear 53. The motor drives the gear 53 to rotate, thereby driving the gear ring 52 to rotate, so that the second hydraulic telescopic rod 410 rotates, so that the welding head at its end welds the ship's pipe and reducer.

[0059] In this embodiment, after the second hydraulic telescopic rod 410 is extended, the bending rod 54 contacts the ship's pipe and reducer as the second hydraulic telescopic rod 410 moves. During the rotation welding process of the welding head at the end of the second hydraulic telescopic rod 410, the brush 56 removes dust on the surface of the ship's pipe and reducer to avoid affecting the welding quality. For particles adhering to the surface of the ship's pipe and reducer, the resistance of the clip 57 to the disc 55 is used to clean the attachments. When the adhesion of the attachments is greater than the resistance of the clip 57 to the disc 55, the disc 55 will break away from the restriction of the clip 57 to avoid damage to the pipeline caused by forced cleaning.

[0060] Embodiment 3

[0061] Based on the first or second embodiment, this embodiment proposes a ship pipeline assembly welding process, such as Figure 7-Figure 9 As shown, a support assembly 6 is provided on the top of the lifting and docking platform 3, and the support assembly 6 includes an insertion column 61, an intermediate block 62, a third hydraulic telescopic rod 63, a push ring 64, an umbrella frame 65 and an arc plate 66. The end of the insertion column 61 is fixedly connected to the lifting and docking platform 3, the intermediate block 62 is fixedly installed in the middle of the insertion column 61, the third hydraulic telescopic rod 63 is fixedly installed at both ends of the intermediate block 62, the push ring 64 is fixedly installed at the end of the third hydraulic telescopic rod 63, the end of the push ring 64 is hinged with an umbrella frame 65 hinged to the end of the insertion column 61, the end of the umbrella frame 65 is slidably connected to the arc plate 66, the arc plate 66 is in contact with the inner wall of the ship pipeline and the reducer, and the end of the reducer is in contact with the lifting and docking platform 3.

[0062] The arc plate 66 is slidably connected to a press plate 67 inside, and a hydraulic cylinder pipe 69 connected to the hydraulic cylinder is fixedly installed inside the press plate 67. The end of the hydraulic cylinder pipe 69 is connected to the third hydraulic telescopic rod 63, and a push-type valve 610 is fixedly installed between the arc plate 66 and the press plate 67.

[0063] Initially, the umbrella frame 65 is in a folded state, which facilitates the insertion of the insertion column 61 into the reducer and the ship's pipeline. Subsequently, the hydraulic oil in the hydraulic cylinder enters the third hydraulic telescopic rod 63 from the hydraulic cylinder tube 69, thereby extending the third hydraulic telescopic rod 63, and the push ring 64 moves and opens the umbrella frame 65, so that the arc plate 66 is unfolded and rests against the inner wall of the ship's pipeline and the reducer, thereby supporting the ship's pipeline and the reducer. Since the arc plate 66 located at the lowest point is also in contact with the reducer and the ship's pipeline, both ends of the insertion column 61 have a supporting force to prevent the insertion column 61 from tilting.

[0064] A return spring 68 is elastically connected between the arc plate 66 and the pressing plate 67 and at a position offset from the push-type valve 610. A limit block is fixedly installed inside the arc plate 66. When the push-type valve 610 is fully retracted, the pressing plate 67 contacts the limit block. The limit block prevents the pressing plate 67 from moving too long and causing damage to the push-type valve 610.

[0065] In this embodiment, when the arc plate 66 contacts the inner wall of the ship's pipeline and the reducer, the pressing plate 67 is pressed into the arc plate 66, and the pressing plate 67 and the arc plate 66 compress the return spring 68 and cause the push valve 610 to close the hydraulic cylinder tube 69, so that the umbrella frame 65 stops further unfolding. After the umbrella frame 65 is unfolded, the ring formed by multiple arc plates 66 is adapted to the inner diameter of the ship's pipeline and the reducer, and the arc plate 66 supports and stabilizes the docking of the ship's pipeline and the reducer to avoid shaking.

[0066] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A ship pipeline assembly welding process, characterized in that: The steps include: S1. The ship pipeline is towed to the ship pipeline assembly welding equipment through the towing equipment, and matching welding materials are selected according to the material of the pipeline; S2. After transporting the ship pipeline to be welded to the ship pipeline assembly welding equipment, arc welding is performed on the ship pipeline; The ship pipeline assembly welding equipment comprises a fixed support platform (1), a support pad (2) is fixedly installed on the side of the fixed support platform (1), and the ship pipeline is placed on the top of the fixed support platform (1); A diameter adapting assembly (4), the diameter adapting assembly (4) comprising a gantry (41), a support rod (42), a roller (43), a cross plate (44), a hydraulic adjustment assembly, a first hydraulic telescopic rod (49) and a second hydraulic telescopic rod (410); the gantry (41) is fixedly mounted on the top of the fixed support platform (1); the side of the gantry (41) is rotatably connected to the support rod (42); two support rods (42) are provided, and the two sides of the two support rods (42) facing each other are rotatably connected to the roller (43); two symmetrically arranged hydraulic adjustment assemblies are fixedly mounted on the top of the gantry (41); a cross plate (44) is provided at the bottom of the hydraulic adjustment assembly; the roller (43) rolls at the bottom of the cross plate (44); the two hydraulic adjustment assemblies are respectively connected to the first hydraulic telescopic rod (49) and the second hydraulic telescopic rod (410) whose ends are connected to a welding head; A surrounding welding assembly (5), the surrounding welding assembly (5) comprising a fixed ring (51) and a gear ring (52), the fixed ring (51) is internally rotatably connected to the gear ring (52), and the second hydraulic telescopic rod (410) is fixedly mounted on the inner wall of the gear ring (52); A lifting docking platform (3) for placing a reducer is fixedly installed on the top of the first hydraulic telescopic rod (49), and a fixing ring (51) for welding the reducer and the ship pipeline is arranged on the top of the lifting docking platform (3).

2. A ship pipeline assembly welding process according to claim 1, characterized in that: Three second hydraulic telescopic rods (410) are provided and are distributed in a circular manner at equal angles with respect to the gear ring (52); the butt joint between the ship pipeline and the reducer is in the same plane as the three second hydraulic telescopic rods (410); and the maximum movement angle of the second hydraulic telescopic rods (410) is 121°.

3. A ship pipeline assembly welding process according to claim 1, characterized in that: The hydraulic adjustment assembly comprises a connecting rod (46), a hydraulic oil cylinder (47) and a piston (48); the bottom of the hydraulic oil cylinder (47) is fixedly connected to the gantry (41); the interior of the hydraulic oil cylinder (47) is slidably connected to the piston (48); the bottom of the piston (48) is fixedly installed with a connecting rod (46) that penetrates into the interior of the hydraulic oil cylinder (47); the bottom of the connecting rod (46) is fixedly connected to the cross plate (44).

4. A ship pipeline assembly welding process according to claim 3, characterized in that: The hydraulic oil cylinder (47) is provided with two types, one of which has a liquid outlet located near the top end, and the other of which has a liquid outlet located near the bottom end. The hydraulic oil cylinder (47) with a liquid outlet located near the top end is connected to a first hydraulic telescopic rod (49), and the hydraulic oil cylinder (47) with a liquid outlet located near the bottom end is connected to a second hydraulic telescopic rod (410). When the piston (48) moves, the length of the first hydraulic telescopic rod (49) extending is half of the moving distance of the piston (48), and the length of the second hydraulic telescopic rod (410) contracting is equal to the moving distance of the piston (48).

5. A ship pipeline assembly welding process according to claim 4, characterized in that: A guide rod (45) is fixedly installed on the top of the transverse plate (44) and at a position offset from the connecting rod (46); the guide rod (45) passes through the gantry (41); a limit plate is fixedly installed on the top of the gantry (41); and a first torque spring (411) is elastically connected to the rotation connection between the support rod (42) and the gantry (41).

6. A ship pipeline assembly welding process according to claim 1, characterized in that: The surrounding welding assembly (5) further comprises a bending rod (54), a disc (55), a brush (56) and a clip (57); the bending rod (54) is fixedly mounted on the side of the second hydraulic telescopic rod (410); the end of the bending rod (54) is rotatably connected to the brush (56); the disc (55) is fixedly mounted on the side of the brush (56); a notch is provided on the disc (55); the clip (57) is fixedly mounted on the side of the bending rod (54); and the clip (57) is clipped with the notch on the disc (55).

7. A ship pipeline assembly welding process according to claim 6, characterized in that: The bristles on the brush (56) are in contact with the ship's pipeline and the reducer, and the connection between the main body of the brush (56) and the bristles is against the ship's pipeline and the reducer. The gear ring (52) rotates counterclockwise, and a second torque spring (58) is elastically connected between the disc (55) and the bending rod (54). The gear ring (52) is meshedly connected with a gear (53) that is rotatably connected to the lifting docking platform (3), and a motor installed inside the lifting docking platform (3) is fixedly installed at the center of the gear (53).

8. A ship pipeline assembly welding process according to claim 7, characterized in that: A support assembly (6) is provided on the top of the lifting docking platform (3). The support assembly (6) comprises an insertion column (61), an intermediate block (62), a third hydraulic telescopic rod (63), a push ring (64), an umbrella frame (65) and an arc plate (66). The end of the insertion column (61) is fixedly connected to the lifting docking platform (3). The middle part of the insertion column (61) is fixedly mounted with the intermediate block (62). Both ends of the intermediate block (62) are fixedly mounted with the third hydraulic telescopic rod (63). The end of the third hydraulic telescopic rod (63) is fixedly mounted with a push ring (64). The end of the push ring (64) is hinged with an umbrella frame (65) hinged with the end of the insertion column (61). The end of the umbrella frame (65) is slidably connected with the arc plate (66). The arc plate (66) contacts the inner wall of the ship pipeline and the reducer. The end of the reducer contacts the lifting docking platform (3).

9. A ship pipeline assembly welding process according to claim 8, characterized in that: The arc plate (66) is slidably connected to a press plate (67) inside, a hydraulic cylinder pipe (69) communicating with a hydraulic cylinder is fixedly installed inside the press plate (67), an end of the hydraulic cylinder pipe (69) is connected to a third hydraulic telescopic rod (63), and a push-type valve (610) is fixedly installed between the arc plate (66) and the press plate (67).

10. A ship pipeline assembly welding process according to claim 9, characterized in that: A return spring (68) is elastically connected between the arc plate (66) and the push-in plate (67) and at a position offset from the push-type valve (610). A limit block is fixedly installed inside the arc plate (66). When the push-type valve (610) is fully retracted, the push-in plate (67) contacts the limit block.

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