High-pressure pipeline welding device and welding method thereof

Abstract

The invention relates to the technical field of laser welding, discloses a high-pressure pipeline welding device and a welding method thereof, and solves the problems that when the number of branch pipelines needing to be welded is increased or the positions of the branch pipelines need to be changed, a clamping device needs to be additionally mounted or the positions of the clamping device need to be correspondingly adjusted, and the application range is small. The device comprises a base, a movable seat is arranged above the base, a clamping supporting piece used for fixing a main pipeline is installed on the base, two installation frames are fixedly installed on the movable seat, a translation mechanism used for driving the two installation frames to move is installed on the base, and positioning structures used for fixing branch pipelines are installed at the tops of the installation frames. Mounting shells are fixedly connected to the sides, close to each other, of the two mounting frames, and mounting bases are arranged below the mounting shells; and the positions of the positioning structure and the laser welding assembly can be flexibly adjusted according to the number and position of the branch pipelines, the application range is widened, and the pipelines can be conveniently welded.

Description

Technical Field

[0001] The invention belongs to the technical field of laser welding, and specifically relates to a high-pressure pipeline welding device and a welding method thereof. Background Art

[0002] In order to meet the gas power requirements of commercial liquid medium-sized launch vehicles during component assembly, final assembly transfer and vertical testing, it is used to provide gas media of different types, pressures and flows. The gas power system of the final assembly and testing area is set up to specifically include a high-pressure air supply system, a high-pressure nitrogen supply system, a high-pressure helium supply system and a process equipment control system to meet the above technical requirements.

[0003] The high-pressure air supply system obtains the high-pressure air source through the compressor boosting method. The high-pressure air supply system mainly consists of: air compressor unit, high-pressure air storage tank, gas distribution platform (box), valve and pipeline system, etc. The compressor is placed in the power center, and the high-pressure air storage tank is placed in the tank area. The compressor unit sucks in the air (atmosphere) and compresses it to the required pressure, and then fills the high-pressure air storage tank after filtering and drying, and then transports it to the general assembly transfer area, vertical test area, and the second phase component manufacturing and turnover plant through the gas distribution platform (box) and pipelines. The high-pressure air supply system is mainly used to provide 40MPa-45MPa and 26MPa-35MPa compressed air to the general assembly and transfer area, 37MPa-45MPa, 26MPa-35MPa and 6MPa-9MPa compressed air to the vertical testing area, 23MPa and 0.1MPa-1MPa compressed air to the welding area of ​​the second phase component manufacturing and turnover plant, 0.6MPa-0.8MPa compressed air to the surface treatment area of ​​the second phase component manufacturing and turnover plant, 23MPa compressed air to the material turnover area of ​​the second phase component manufacturing and turnover plant, and 1MPa compressed air to the second phase garage.

[0004] In the above construction, welding technology plays an important role. For the construction of high-pressure gas pipelines, welding quality is very important. At present, when the pipeline is produced, several branch pipelines need to be welded to the welding points on the main pipeline respectively; However, it is worth considering that during the welding process, it is necessary to manually align the branch pipes with the locations to be welded on the main pipe, and then clamp the branch pipes and the main pipe respectively through clamping devices. According to the number of branch pipes, it is necessary to set clamping devices equal to the number of branch pipes. After the number and position of the clamping devices are determined, when the number of branch pipes to be welded increases or the positions change, it is necessary to add clamping devices or adjust the positions of the clamping devices accordingly. The scope of application is small and there are certain limitations.

[0005] Therefore, in order to solve the above problems, a related facility that better meets the usage requirements is needed. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-pressure pipeline welding device and a welding method thereof, which effectively solves the problem of a small scope of application in the above background technology that when the number of branch pipes to be welded increases or the position changes, the clamping device needs to be added or the position of the clamping device needs to be adjusted accordingly.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-pressure pipeline welding device, comprising a base, a movable seat is provided above the base, a clamping support for fixing the main pipeline is installed on the base, two mounting frames are fixedly installed on the movable seat, a translation mechanism for driving the two mounting frames to move is installed on the base, a positioning structure for fixing the branch pipeline is installed on the top of the mounting frame, a mounting shell is fixedly connected to the side where the two mounting frames are close to each other, a mounting seat is provided below the mounting shell, a laser welding assembly is installed on the mounting seat, and a welding adjustment structure for driving the mounting seat to rotate around the branch pipeline is installed on the mounting shell.

[0008] Preferably, the welding adjustment structure includes an adjustment seat arranged in a mounting shell, and the mounting shell is a cavity structure with an opening at the bottom, a first rotating shaft rotatably connected passes through the adjustment seat, a first gear is fixedly connected to the bottom end of the first rotating shaft, a first rack meshing with the first gear is fixedly connected to the inner wall of the mounting shell, a second rack meshing with the first gear is fixedly connected to the top of the mounting seat, a first guide bar is fixedly connected to the top of the second rack, a first guide groove is provided at the bottom of the adjustment seat, and the first guide bar passes through the first guide groove, first avoidance holes matched with the second rack and the first guide bar are respectively provided at both ends of the mounting shell, a guide member matched with the adjustment seat is installed on the mounting shell, and a toggle mechanism for toggling the first rotating shaft to move is installed on the movable seat.

[0009] Preferably, the guide member includes a fixing bar fixedly mounted on the top inner wall of the mounting shell, a second guide groove is formed at the bottom of the fixing bar, the top of the adjustment seat is fixedly connected with the second guide bar, and the second guide bar is located in the second guide groove.

[0010] Preferably, the toggle mechanism includes a movable plate arranged on the top of the mounting shell, a third avoidance hole matched with the first rotating shaft is opened on the top inner wall of the mounting shell, and the first rotating shaft passes through the third avoidance hole, a rectangular hole is opened on the movable plate, and the top end of the first rotating shaft is located in the rectangular hole, a first screw rod and a first guide column pass through the movable plate, the threads on the two first screw rods are in opposite directions, and the connection method between the movable plate and the first screw rod is a threaded connection, the first guide column and the movable seat are fixedly connected, the first screw rod and the movable seat are rotatably connected, and the movable seat is provided with a damping driver for driving the first screw rod to rotate, and two stop blocks are fixedly connected to the top of the mounting shell, and the two stop blocks are respectively located on both sides of the movable plate.

[0011] Preferably, the damping driver includes a first damping disk fixedly mounted on the end of the first screw rod, a first support shaft is provided on the side of the first damping disk away from the movable seat, an external rotating sleeve of the first support shaft is provided with a first fixed frame, and the first fixed frame and the movable seat are fixedly connected, the two ends of the first support shaft are respectively fixedly connected with a second damping disk and a second gear, the second damping disk is in contact with the first damping disk, and the movable seat is equipped with a driving member adapted to the second gear.

[0012] Preferably, the driving member includes two first protective boxes arranged on the side of the movable seat away from the mounting frame, the outer sleeve of the first protective box is provided with a sealing sleeve, and the sealing sleeve is fixedly connected to the movable seat, the two first protective boxes are fixedly connected through a connecting plate, the movable seat is fixedly installed with at least one first hydraulic telescopic rod, and the telescopic end of the first hydraulic telescopic rod is fixedly connected to the connecting plate, a first supporting part is fixedly connected inside the first protective box, a first connecting shaft rotatably connected passes through the first supporting part, a third gear meshing with the second gear is fixedly installed on the first connecting shaft, one of the first protective boxes is fixedly installed with a first motor, the output end of the first motor is fixedly connected with a second rotating shaft, and the second rotating shaft is rotatably connected to the two first protective boxes respectively, the outer fixed sleeve of the second rotating shaft is provided with two first bevel gears, and the first connecting shaft is fixedly installed with a second bevel gear meshing with the first bevel gear.

[0013] Preferably, the positioning structure includes a second protective box fixedly mounted on the mounting frame, and the second protective box is located above the mounting shell, two second support shafts are arranged in the second protective box, the ends of the two second support shafts that are far away from each other are respectively rotatably connected to the inner wall of the second protective box, and the ends of the two second support shafts that are close to each other are respectively fixedly connected to the mounting plate, a second avoidance hole that is adapted to the mounting plate is opened on the second protective box, the mounting plate passes through the second avoidance hole, positioning plates are symmetrically arranged on both sides of the second protective box, and the two mounting plates are respectively fixedly connected to the two positioning plates, a second supporting portion is fixedly connected in the second protective box, a second connecting shaft that is rotatably connected is passed through the second supporting portion, and the two ends of the second connecting shaft are respectively fixedly connected to the worm gear and the third bevel gear, and the second support The outer fixed sleeve of the shaft is provided with a fourth bevel gear, and the two fourth bevel gears are meshed with the third bevel gear. The second protective box is rotatably connected with a third rotating shaft, and a worm located in the second protective box is fixedly installed on the third rotating shaft, and the worm and the worm gear are meshed. The third rotating shaft is rotatably connected with a movable seat, and a third damping disk located in the first protective box is fixedly installed on the third rotating shaft. A third supporting shaft is provided in the first protective box, and a second fixed frame is fixedly connected to the movable seat. The two ends of the third support shaft are respectively fixedly connected with a fourth damping disk and a fourth gear, and the fourth damping disk is in contact with the third damping disk. A damping block is fixedly installed on the second fixed frame, and the damping block is in contact with the third damping disk, and the fourth gear is meshed with the third gear.

[0014] Preferably, the laser welding assembly includes a laser welder arranged under the mounting seat, the top of the laser welder is fixedly connected to a connecting block, the bottom of the mounting seat is provided with a third guide groove, a guide block is provided in the third guide groove, side plates are symmetrically provided on both sides of the connecting block, the side plates and the guide blocks are fixedly connected, and the sides of the two side plates that are close to each other are respectively in contact with the two sides of the connecting block, and the two sides of the connecting block are respectively fixedly connected with a fourth rotating shaft, the fourth rotating shaft passes through the side plates, and the end of the fourth rotating shaft away from the connecting block is fixedly connected with a fifth damping disk, and the side of the fifth damping disk away from the fourth rotating shaft is in contact with a damping plate, and two second guide columns are passed through the damping plate, one end of the second guide column is fixedly connected to the mounting seat, and the other end of the second guide column is fixedly connected to the fixed plate, and the outer sleeve of the second guide column is provided with a compression spring, and the two ends of the compression spring are respectively abutted against the damping plate and the fixed plate.

[0015] Preferably, the clamping support comprises a plurality of brackets fixedly mounted on the top of the base, two groups of clamps are provided above the base, each group of clamps comprises two clamps, a first support plate is provided on the side away from two adjacent clamps, the first support plate is fixedly connected to the base, a second hydraulic telescopic rod is fixedly connected to the side of the first support plate facing the clamp, and the telescopic end of the second hydraulic telescopic rod is fixedly connected to the clamp, the translation mechanism comprises two second support plates fixedly mounted on the top of the base, a second motor is fixedly mounted on one of the second support plates, a second screw rod is passed through the other second support plate for rotation connection, and the output end of the second motor is fixedly connected to the second screw rod, a third guide column is provided above the base, and both ends of the third guide column are fixedly connected to the base through the third support plate, the second screw rod and the third guide column respectively pass through the two mounting frames, and the connection method of the second screw rod and the mounting frame is a threaded connection.

[0016] The present invention also provides a high-pressure pipeline welding method, using the high-pressure pipeline welding device as described above, comprising the following steps: Step 1: The main pipe is clamped and fixed by a clamping support, and the opening of the main pipe to be welded faces upward, and the mounting frame and the movable seat are driven to move to a preset position by a translation mechanism; Step 2: The staff places the branch pipe to be welded on top of the main pipe, fixes the branch pipe through the positioning structure on the mounting frame, and the two welding adjustment structures drive the two mounting seats to rotate 90 degrees forward respectively to calibrate the welding starting position of the mounting seat and the laser welding assembly; Step 3: The two welding adjustment structures drive the two mounting seats to rotate 180 degrees respectively, and the laser welding assembly welds the connection between the branch pipe and the main pipe. After the welding is completed, the two welding adjustment structures drive the two mounting seats to rotate 90 degrees forward respectively, so that the mounting seats and the laser welding assembly are reset to the initial position relative to the mounting shell; Step 4: Release the fixation of the branch pipes through the positioning structure, drive the mounting frame and the movable seat to move to the next preset position through the translation mechanism, and return to step 2 until all the branch pipes are welded. Release the clamping fixation of the main pipe through the clamping support, and the staff can remove the welded pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The branch pipes are fixed by the positioning structure on the mounting frame, and the two welding adjustment structures respectively drive the two mounting seats to rotate forward 90 degrees to correct the welding starting position of the mounting seats and the laser welding assembly. Then the two welding adjustment structures respectively drive the two mounting seats to reverse 180 degrees, and the laser welding assembly welds the connection between the branch pipe and the main pipe. After welding, the two welding adjustment structures respectively drive the two mounting seats to rotate forward 90 degrees to reset the mounting seats and the laser welding assembly to the initial position relative to the mounting shell, and the branch pipes are released by the positioning structure. The mounting frame and the movable seat are driven to move to the next preset position by the translation mechanism, and the welding of the next branch pipe can be started. When all the branch pipes are welded, the clamping and fixing of the main pipe are released by the clamping support, and the staff can remove the welded pipes. The position of the positioning structure and the laser welding assembly can be flexibly adjusted according to the number and position of the branch pipes, which improves the scope of application and facilitates the welding of pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the movable seat and the mounting frame of the present invention; Figure 3 This is a schematic diagram of the structure inside the first protection box of the present invention; Figure 4 is a schematic structural diagram of a second fixing frame of the present invention; Figure 5 It is a schematic diagram of the structure inside the second protection box of the present invention; Figure 6 It is a structural schematic diagram of the installation shell of the present invention; Figure 7 It is a schematic diagram of the structure of the fixed bar and the second guide bar separated from each other according to the present invention; Figure 8 It is a structural schematic diagram of the adjustment seat of the present invention; Fig. 9 It is a schematic diagram of the structure of the disassembled laser welding assembly of the present invention.

[0020] In the figure: 1, base; 2, movable seat; 3, mounting frame; 4, laser welder; 5, mounting seat; 6, mounting shell; 7, adjustment seat; 8, first rotating shaft; 9, first gear; 10, first rack; 11, first supporting shaft; 12, second rack; 13, first guide bar; 14, first guide groove; 15, fixed bar; 16, second guide groove; 17, second guide bar; 18, first avoidance hole; 19, movable plate; 20, rectangular hole; 21 , first screw rod; 22, first guide column; 23, stop block; 24, first damping plate; 25, first fixing frame; 26, second damping plate; 27, first protection box; 28, connecting plate; 29, first hydraulic telescopic rod; 30, second gear; 31, first connecting shaft; 32, third gear; 33, first supporting part; 34, second rotating shaft; 35, first bevel gear; 36, second bevel gear; 37, first motor; 38, sealing sleeve; 39 , second protection box; 40, second support shaft; 41, mounting plate; 42, positioning plate; 43, second avoidance hole; 44, second connecting shaft; 45, second supporting part; 46, third bevel gear; 47, fourth bevel gear; 48, worm gear; 49, third rotating shaft; 50, worm; 51, third damping plate; 52, third support shaft; 53, second fixing frame; 54, damping block; 55, fourth damping plate; 56, fourth gear; 57, connecting block; 58. The third guide groove; 59. The guide block; 60. The side plate; 61. The fourth rotating shaft; 62. The fifth damping plate; 63. The damping plate; 64. The second guide column; 65. The fixed plate; 66. The compression spring; 67. The bracket; 68. The second hydraulic telescopic rod; 69. The clamping plate; 70. The second motor; 71. The second screw rod; 72. The third guide column; 73. The third avoidance hole; 74. The first support plate; 75. The second support plate; 76. The third support plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Embodiment 1, by Figure 1 , Figure 2 and Figure 6The present invention comprises a base 1, a movable base 2 is arranged above the base 1, a clamping support for fixing the main pipeline is installed on the base 1, two mounting frames 3 are fixedly installed on the movable base 2, a translation mechanism for driving the two mounting frames 3 to move is installed on the base 1, a positioning structure for fixing the branch pipeline is installed on the top of the mounting frame 3, a mounting shell 6 is fixedly connected to the adjacent side of the two mounting frames 3, a mounting seat 5 is arranged below the mounting shell 6, a laser welding assembly is installed on the mounting seat 5, and a welding adjustment structure for driving the mounting seat 5 to rotate around the branch pipeline is installed on the mounting shell 6; the branch pipeline is fixed by the positioning structure on the mounting frame 3, the two welding adjustment structures respectively drive the two mounting seats 5 to rotate forward 90 degrees, the welding starting position of the mounting seat 5 and the laser welding assembly is corrected, and then the two welding The adjustment structure drives the two mounting seats 5 to reverse 180 degrees respectively, and the laser welding assembly welds the connection between the branch pipe and the main pipe. After welding, the two welding adjustment structures drive the two mounting seats 5 to rotate forward 90 degrees respectively, so that the mounting seats 5 and the laser welding assembly are reset to the initial position relative to the mounting shell 6, and the branch pipe is released by the positioning structure. The mounting frame 3 and the movable seat 2 are driven by the translation mechanism to move to the next preset position, and then the welding of the next branch pipe can be started. When all the branch pipes are welded, the clamping support is used to release the clamping fixation of the main pipe, and the staff can remove the welded pipe. The position of the positioning structure and the laser welding assembly can be flexibly adjusted according to the number and position of the branch pipes, thereby improving the scope of application and facilitating the welding of the pipes.

[0023] Embodiment 2, based on embodiment 1, Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8It is given that the welding adjustment structure includes an adjustment seat 7 arranged in the mounting shell 6, and the mounting shell 6 is a cavity structure with an opening at the bottom end. A first rotating shaft 8 for rotational connection runs through the adjustment seat 7, and a first gear 9 is fixedly connected to the bottom end of the first rotating shaft 8. A first rack 10 meshing with the first gear 9 is fixedly connected to the inner wall of the mounting shell 6. A second rack 12 meshing with the first gear 9 is fixedly connected to the top of the mounting seat 5, and a first guide bar 13 is fixedly connected to the top of the second rack 12. A first guide groove 14 is provided at the bottom of the adjustment seat 7, and the first guide bar 13 runs through the first guide groove 14. First avoidance holes 18 adapted to the second rack 12 and the first guide bar 13 are respectively provided at both ends of the mounting shell 6. The mounting shell 6 is installed with The movable seat 2 is equipped with a toggle mechanism for toggling the first rotating shaft 8 to move, and the guide member includes a fixed strip 15 fixedly mounted on the inner wall of the top of the mounting shell 6, and a second guide groove 16 is provided at the bottom of the fixed strip 15. The top of the adjustment seat 7 is fixedly connected with a second guide strip 17, and the second guide strip 17 is located in the second guide groove 16. The toggle mechanism includes a movable plate 19 arranged on the top of the mounting shell 6, and a third avoidance hole 73 adapted to the first rotating shaft 8 is provided on the inner wall of the top of the mounting shell 6, and the first rotating shaft 8 passes through the third avoidance hole 73. A rectangular hole 20 is provided on the movable plate 19, and the top end of the first rotating shaft 8 is located in the rectangular hole 20. A first screw rod 21 and a first guide column 22 are passed through the movable plate 19. The two The threads on the first screw rod 21 are opposite in direction, and the connection mode of the movable plate 19 and the first screw rod 21 is a threaded connection, the first guide column 22 is fixedly connected to the movable seat 2, the first screw rod 21 is rotatably connected to the movable seat 2, and a damping driver for driving the first screw rod 21 to rotate is provided on the movable seat 2, two stop blocks 23 are fixedly connected to the top of the mounting shell 6, and the two stop blocks 23 are respectively located on both sides of the movable plate 19, the damping driver includes a first damping disk 24 fixedly mounted on the end of the first screw rod 21, a first support shaft 11 is provided on the side of the first damping disk 24 away from the movable seat 2, a first fixed frame 25 is provided on the outer rotating sleeve of the first support shaft 11, and the first fixed frame 25 is fixedly connected to the movable seat 2, and the first support shaft 11 The two ends are respectively fixedly connected with a second damping plate 26 and a second gear 30, the second damping plate 26 is in contact with the first damping plate 24, the movable seat 2 is equipped with a driving member adapted to the second gear 30, the driving member comprises two first protective boxes 27 arranged on the side of the movable seat 2 away from the mounting frame 3, the outer sleeve of the first protective box 27 is provided with a sealing sleeve 38, and the sealing sleeve 38 is fixedly connected to the movable seat 2, the two first protective boxes 27 are fixedly connected through a connecting plate 28, the movable seat 2 is fixedly installed with at least one first hydraulic telescopic rod 29, and the telescopic end of the first hydraulic telescopic rod 29 is fixedly connected to the connecting plate 28, the first protective box 27 is fixedly connected with a first supporting portion 33, and the first supporting portion 33 is penetrated by a first connecting shaft 31 connected in rotation,The first connecting shaft 31 is fixedly mounted with a third gear 32 meshing with the second gear 30, one of the first protection boxes 27 is fixedly mounted with a first motor 37, the output end of the first motor 37 is fixedly connected with a second rotating shaft 34, and the second rotating shaft 34 is rotatably connected to the two first protection boxes 27 respectively, the outer fixed sleeve of the second rotating shaft 34 is provided with two first bevel gears 35, and the first connecting shaft 31 is fixedly mounted with a second bevel gear 36 meshing with the first bevel gear 35; The second rotating shaft 34 is driven to rotate by the first motor 37, and the second rotating shaft 34 drives the second bevel gear 36, the first connecting shaft 31 and the third gear 32 to rotate through the first bevel gear 35. The third gear 32 drives the first supporting shaft 11 and the second damping plate 26 to rotate through the second gear 30. The second damping plate 26 can drive the first damping plate 24 and the first screw rod 21 to rotate by friction. The first screw rod 21 drives the movable plate 19 to move horizontally relative to the first guide column 22 and the movable seat 2. Since the threads on the two first screw rods 21 are in opposite directions, the two movable plates 19 move in different directions, so that the two movable plates 19 respectively pushes the two first rotating shafts 8 to rotate in the same direction around the branch pipe, and the first rotating shaft 8 slides in the rectangular hole 20, the first rotating shaft 8 drives the second guide bar 17 to slide in the second guide groove 16 through the adjustment seat 7, the first rotating shaft 8 pushes the second rack 12 to move synchronously through the first gear 9, and the first gear 9 rolls on the first rack 10, the first gear 9 rotates, and the first gear 9 pushes the second rack 12 to move synchronously. At the same time, due to the rotation of the first gear 9, the first gear 9 drives the second rack 12 to slide relative to the adjustment seat 7, the first guide bar 13 slides in the first guide groove 14, and the second rack 12 can The mounting seat 5 and the laser welding assembly are driven to rotate. When the two mounting seats 5 rotate forward 90 degrees, the laser welding assembly and the mounting seat 5 are moved out from the bottom of the mounting shell 6, and the movable plate 19 contacts one of the stop blocks 23. As the second damping disc 26 continues to rotate, the second damping disc 26 cannot drive the first damping disc 24 to rotate synchronously by friction. The mounting seat 5 and the laser welding assembly automatically stop after moving to the welding starting position. When the first motor 37 drives the second rotating shaft 34 to rotate in the opposite direction, the second damping disc 26 can drive the first damping disc 24 to rotate in the opposite direction by friction. When the two mounting seats 5 are reversed 180 degrees, the second damping disc 26 can drive the first damping disc 24 to rotate in the opposite direction by friction. When the mounting base 5 is reversed 180 degrees, the movable plate 19 contacts with another stop block 23 to ensure that the mounting base 5 stops automatically after moving to the preset position. During the process of the mounting base 5 reversing 180 degrees, the laser welding assembly welds the connection between the branch pipe and the main pipe, and the first hydraulic telescopic rod 29 drives the connecting plate 28 and the first protective box 27 to move relative to the sealing sleeve 38 and the movable base 2, so that the first support part 33 drives the third gear 32 to slide relative to the second gear 30 through the first connecting shaft 31, and the sliding of the third gear 32 relative to the second gear 30 will not affect the meshing relationship between the third gear 32 and the second gear 30.

[0024] Embodiment 3, based on embodiment 2, Figure 2 , Figure 3 , Figure 4 and Figure 5 It is given that the positioning structure includes a second protective box 39 fixedly mounted on the mounting frame 3, and the second protective box 39 is located above the mounting shell 6, two second support shafts 40 are arranged in the second protective box 39, the ends of the two second support shafts 40 that are far away are respectively rotatably connected to the inner wall of the second protective box 39, and the ends of the two second support shafts 40 that are close to each other are respectively fixedly connected to the mounting plate 41, and the second protective box 39 is provided with a second avoidance hole 43 that is adapted to the mounting plate 41, and the mounting plate 41 passes through the second avoidance hole 43, and positioning plates 42 are symmetrically arranged on both sides of the second protective box 39, and the two mounting plates 41 are respectively fixedly connected to the two positioning plates 42, a second supporting portion 45 is fixedly connected in the second protective box 39, and a second connecting shaft 44 that is rotatably connected is passed through the second supporting portion 45, and a worm gear 48 and a third bevel gear 46 are respectively fixedly connected at both ends of the second connecting shaft 44, and the external fixing sleeve of the second support shaft 40 A fourth bevel gear 47 is provided, and the two fourth bevel gears 47 are meshed with the third bevel gear 46. A third rotating shaft 49 is rotatably connected to the second protection box 39. A worm 50 located in the second protection box 39 is fixedly installed on the third rotating shaft 49, and the worm 50 is meshed with the worm wheel 48. The third rotating shaft 49 is rotatably connected to the movable seat 2. A third damping disk 51 located in the first protection box 27 is fixedly installed on the third rotating shaft 49. A third supporting shaft 52 is provided in the first protection box 27. The outer rotating sleeve of the third supporting shaft 52 is provided with a second fixing frame 53. The second fixing frame 53 is fixedly connected to the movable seat 2. The two ends of the third supporting shaft 52 are respectively fixedly connected with a fourth damping disk 55 and a fourth gear 56. The fourth damping disk 55 is in contact with the third damping disk 51. A damping block 54 is fixedly installed on the second fixing frame 53, and the damping block 54 is in contact with the third damping disk 51. The fourth gear 56 is meshed with the third gear 32. The connecting plate 28 and the first protective box 27 are driven to move by the first hydraulic telescopic rod 29, and the first protective box 27 drives the first connecting shaft 31 and the third gear 32 to move synchronously through the first supporting part 33, so that the third gear 32 is meshed with the second gear 30 and the fourth gear 56 at the same time. When the branch pipe to be welded is placed above the main pipe and the branch pipe is aligned with the welding position on the main pipe, the two second protective boxes 39 are respectively located on both sides of the branch pipe. When the two mounting seats 5 rotate forward 90 degrees and the mounting seats 5 and the laser welding assembly move to the welding starting position, the third gear 32 synchronously drives the fourth gear 56 to rotate, and the fourth gear 56 drives the fourth damping plate 55 to rotate through the third supporting shaft 52. The fourth damping plate 55 is rotated by friction The force drives the third damping disk 51 to rotate, and the third damping disk 51 drives the worm 50 to rotate through the third rotating shaft 49, and the worm 50 drives the second connecting shaft 44 and the third bevel gear 46 to rotate through the worm gear 48. The third bevel gear 46 drives the two second supporting shafts 40 to rotate in opposite directions through the two fourth bevel gears 47. The two adjacent second supporting shafts 40 can drive the two positioning plates 42 to move toward the branch pipe through the mounting plate 41. When the four positioning plates 42 clamp the branch pipe, as the fourth damping disk 55 continues to rotate, the fourth damping disk 55 cannot drive the third damping disk 51 to rotate synchronously through the friction force. When the mounting seat 5 and the laser welding assembly move to the welding starting position, the connecting plate 28 and the first protective box 27 are driven by the first hydraulic telescopic rod 29. The first protective box 27 drives the first connecting shaft 31 and the third gear 32 to move through the first supporting part 33, and the third gear 32 slides relative to the second gear 30 and the fourth gear 56. When the third gear 32 is no longer meshed with the fourth gear 56, the first hydraulic telescopic rod 29 stops driving the connecting plate 28 and the first protective box 27 to move. When the first motor 37 drives the second rotating shaft 34 to rotate in the opposite direction, the third gear 32 cannot drive the third supporting shaft 52 to rotate through the fourth gear 56, and the damping block 54 is in contact with the third damping disk 51. The position of the third damping disk 51 is limited by the damping block 54 to prevent the third damping disk 51 and the third rotating shaft 49 from rotating and shaking due to non-human factors, thereby ensuring that the four positioning plates 42 are kept in the welding process. When the two mounting seats 5 are reversed 180 degrees, the movable plate 19 contacts with another stop block 23, and the mounting seat 5 moves to the preset position and stops automatically. When the laser welding assembly completes the welding of the connection between the branch pipe and the main pipe, the first hydraulic telescopic rod 29 drives the connecting plate 28 and the first protective box 27 to move, so that the third gear 32 is meshed with the fourth gear 56 again. At this time, the first motor 37 continuously drives the second rotating shaft 34 to rotate continuously, and the third gear 32 can drive the fourth gear 56 to rotate, so that the fourth damping disk 55 drives the third damping disk 51 to rotate in the opposite direction through friction, and the third damping disk 51 slides relative to the damping block 54, so that the plurality of positioning plates 42 no longer clamp the branch pipe.When the positioning plate 42 moves to the initial position relative to the second protection box 39, the first hydraulic telescopic rod 29 drives the connecting plate 28 to move again, so that the third gear 32 is no longer meshed with the fourth gear 56, and the first motor 37 can drive the second rotating shaft 34 to rotate, so that the mounting seat 5 and the laser welding assembly move to the bottom of the mounting shell 6 again, and the mounting seat 5 and the laser welding assembly are reset to the initial position relative to the mounting shell 6.

[0025] Embodiment 4, based on embodiment 1, Figure 1 , Figure 7 and Fig. 9 The laser welding assembly includes a laser welder 4 disposed below the mounting seat 5, a connecting block 57 is fixedly connected to the top of the laser welder 4, a third guide groove 58 is provided at the bottom of the mounting seat 5, a guide block 59 is provided in the third guide groove 58, side plates 60 are symmetrically provided on both sides of the connecting block 57, the side plates 60 and the guide blocks 59 are fixedly connected, and the sides of the two side plates 60 that are close to each other are respectively in contact with the two sides of the connecting block 57, and the two sides of the connecting block 57 are respectively fixedly connected with fourth rotating shafts 61, and the fourth rotating shaft 61 penetrates the connecting block 57. The side plate 60 is passed through, and one end of the fourth rotating shaft 61 away from the connecting block 57 is fixedly connected to the fifth damping plate 62. The side of the fifth damping plate 62 away from the fourth rotating shaft 61 is contacted with a damping plate 63. The damping plate 63 runs through two second guide columns 64. One end of the second guide column 64 is fixedly connected to the mounting seat 5, and the other end of the second guide column 64 is fixedly connected to a fixing plate 65. The outer sleeve of the second guide column 64 is provided with a compression spring 66. The two ends of the compression spring 66 are respectively in contact with the damping plate 63 and the fixing plate 65, so that the clamp The support member includes a plurality of brackets 67 fixedly mounted on the top of the base 1, two groups of clamps are arranged above the base 1, each group of clamps includes two clamps 69, and a first support plate 74 is respectively arranged on the side away from the two adjacent clamps 69, the first support plate 74 is fixedly connected to the base 1, and a second hydraulic telescopic rod 68 is fixedly connected to the side of the first support plate 74 facing the clamp 69, and the telescopic end of the second hydraulic telescopic rod 68 is fixedly connected to the clamp 69, and the translation mechanism includes two second support plates 75 fixedly mounted on the top of the base 1, one of the second support plates 75 is fixedly mounted with a second motor 70, and the other second support plate 75 is penetrated with a second screw rod 71 that is rotatably connected, and the output end of the second motor 70 is fixedly connected to the second screw rod 71, and a third guide column 72 is arranged above the base 1, and the two ends of the third guide column 72 are respectively fixedly connected to the base 1 through a third support plate 76, the second screw rod 71 and the third guide column 72 respectively penetrate the two mounting frames 3, and the connection mode of the second screw rod 71 and the mounting frame 3 is a threaded connection; The staff drives the two adjacent damping plates 63 to move away from each other so that the damping plate 63 no longer presses the fifth damping disk 62, and the compression spring 66 is in a compressed state, thereby releasing the limitation on the position of the laser welder 4. The staff drives the laser welder 4 to move, and the laser welder 4 drives the guide block 59 to slide in the third guide groove 58 through the connecting block 57, the fourth rotating shaft 61 and the side plate 60, so as to adjust the distance between the laser welder 4 and the part to be welded. The staff drives the laser welder 4 to rotate, so that the connecting block 57 drives the fourth rotating shaft 61 to rotate relative to the side plate 60, so as to change the inclination angle of the laser welder 4. When the position of the laser welder 4 is adjusted, the staff releases the damping plate 63, and the compression spring 66 drives the damping plate 63 to move relative to the second guide column 64 and the mounting seat 5, and the damping The plate 63 presses the fifth damping disk 62 to fix the fifth damping disk 62 relative to the damping plate 63 and the mounting seat 5, so that the laser welder 4 can be fixed relative to the mounting seat 5. The staff places the main pipeline to be welded on several brackets 67, supports the main pipeline through the brackets 67, drives the clamping plate 69 to move through the second hydraulic telescopic rod 68, and clamps the main pipeline with two adjacent clamping plates 69 to fix the main pipeline relative to the base 1. The second motor 70 drives the second screw rod 71 to rotate, and the second screw rod 71 can drive the mounting frame 3 and the movable seat 2 to move horizontally. At the same time, another mounting frame 3 slides relative to the third guide column 72 and the third support plate 76. The design of the third guide column 72 and the third support plate 76 can make the movable seat 2 and the two mounting frames 3 move smoothly relative to the base 1.

[0026] A high-pressure pipeline welding method of this embodiment uses the high-pressure pipeline welding device as described above, and includes the following steps: Step 1: The main pipe is clamped and fixed by a clamping support, and the opening of the main pipe to be welded faces upward, and the mounting frame 3 and the movable seat 2 are driven to move to a preset position by a translation mechanism; Step 2: The staff places the branch pipe to be welded on the top of the main pipe, fixes the branch pipe through the positioning structure on the mounting frame 3, and the two welding adjustment structures respectively drive the two mounting seats 5 to rotate forward 90 degrees to calibrate the welding starting position of the mounting seat 5 and the laser welding assembly; Step 3: The two welding adjustment structures respectively drive the two mounting seats 5 to rotate 180 degrees in reverse, and the laser welding assembly welds the connection between the branch pipe and the main pipe. After the welding is completed, the two welding adjustment structures respectively drive the two mounting seats 5 to rotate 90 degrees forward, so that the mounting seats 5 and the laser welding assembly are reset to the initial position relative to the mounting shell 6; Step 4: Release the fixation of the branch pipes through the positioning structure, drive the mounting frame 3 and the movable seat 2 to move to the next preset position through the translation mechanism, and return to step 2 until all the branch pipes are welded. Release the clamping fixation of the main pipe through the clamping support, and the staff can remove the welded pipe.

[0027] Working principle: During operation, the main pipeline is clamped and fixed by the clamping support, and the opening of the main pipeline to be welded faces upward. The installation frame 3 and the movable seat 2 are driven to move to the preset position by the translation mechanism. The staff will place the branch pipeline to be welded above the main pipeline, and align the branch pipeline with the main pipeline to be welded. The branch pipeline is fixed by the positioning structure on the installation frame 3. The two welding adjustment structures drive the two mounting seats 5 to rotate forward 90 degrees respectively, and the welding starting position of the mounting seat 5 and the laser welding assembly is corrected. Then the two welding adjustment structures drive the two mounting seats 5 to rotate 180 degrees respectively, and the laser welding assembly is used to align the connection between the branch pipeline and the main pipeline. After welding, the two welding adjustment structures drive the two mounting seats 5 to rotate forward 90 degrees respectively, so that the mounting seats 5 and the laser welding assembly are reset to the initial position relative to the mounting shell 6, and the fixing of the branch pipes is released by the positioning structure, and the mounting frame 3 and the movable seat 2 are driven to move to the next preset position by the translation mechanism, and the welding of the next branch pipe can be started. When all the branch pipes are welded, the clamping and fixing of the main pipe are released by the clamping support, and the staff can remove the welded pipe. The position of the positioning structure and the laser welding assembly can be flexibly adjusted according to the number and position of the branch pipes, thereby increasing the scope of application and facilitating the welding of the pipes. The second rotating shaft 34 is driven to rotate by the first motor 37, and the second rotating shaft 34 drives the second bevel gear 36, the first connecting shaft 31 and the third gear 32 to rotate through the first bevel gear 35. The third gear 32 drives the first supporting shaft 11 and the second damping plate 26 to rotate through the second gear 30. The second damping plate 26 can drive the first damping plate 24 and the first screw rod 21 to rotate by friction. The first screw rod 21 drives the movable plate 19 to move horizontally relative to the first guide column 22 and the movable seat 2. Since the threads on the two first screw rods 21 are in opposite directions, the two movable plates 19 move in different directions, so that the two movable plates 19 respectively pushes the two first rotating shafts 8 to rotate in the same direction around the branch pipe, and the first rotating shaft 8 slides in the rectangular hole 20, the first rotating shaft 8 drives the second guide bar 17 to slide in the second guide groove 16 through the adjustment seat 7, the first rotating shaft 8 pushes the second rack 12 to move synchronously through the first gear 9, and the first gear 9 rolls on the first rack 10, the first gear 9 rotates, and the first gear 9 pushes the second rack 12 to move synchronously. At the same time, due to the rotation of the first gear 9, the first gear 9 drives the second rack 12 to slide relative to the adjustment seat 7, the first guide bar 13 slides in the first guide groove 14, and the second rack 12 can The mounting seat 5 and the laser welding assembly are driven to rotate. When the two mounting seats 5 rotate forward 90 degrees, the laser welding assembly and the mounting seat 5 are moved out from the bottom of the mounting shell 6, and the movable plate 19 contacts one of the stop blocks 23. As the second damping disc 26 continues to rotate, the second damping disc 26 cannot drive the first damping disc 24 to rotate synchronously by friction. The mounting seat 5 and the laser welding assembly automatically stop after moving to the welding starting position. When the first motor 37 drives the second rotating shaft 34 to rotate in the opposite direction, the second damping disc 26 can drive the first damping disc 24 to rotate in the opposite direction by friction. When the two mounting seats 5 are reversed 180 degrees, the second damping disc 26 can drive the first damping disc 24 to rotate in the opposite direction by friction. When the mounting base 5 is rotated 180 degrees, the movable plate 19 contacts another stop block 23 to ensure that the mounting base 5 automatically stops after moving to the preset position. In the process of the mounting base 5 reversing 180 degrees, the laser welding assembly welds the connection between the branch pipe and the main pipe, and the first hydraulic telescopic rod 29 drives the connecting plate 28 and the first protective box 27 to move relative to the sealing sleeve 38 and the movable base 2, so that the first support part 33 drives the third gear 32 to slide relative to the second gear 30 through the first connecting shaft 31, and the sliding of the third gear 32 relative to the second gear 30 does not affect the meshing relationship between the third gear 32 and the second gear 30; The connecting plate 28 and the first protective box 27 are driven to move by the first hydraulic telescopic rod 29, and the first protective box 27 drives the first connecting shaft 31 and the third gear 32 to move synchronously through the first supporting part 33, so that the third gear 32 is meshed with the second gear 30 and the fourth gear 56 at the same time. When the branch pipe to be welded is placed above the main pipe and the branch pipe is aligned with the welding position on the main pipe, the two second protective boxes 39 are respectively located on both sides of the branch pipe. When the two mounting seats 5 rotate forward 90 degrees and the mounting seats 5 and the laser welding assembly move to the welding starting position, the third gear 32 synchronously drives the fourth gear 56 to rotate, and the fourth gear 56 drives the fourth damping plate 55 to rotate through the third supporting shaft 52. The fourth damping plate 55 is rotated by friction The force drives the third damping disk 51 to rotate, and the third damping disk 51 drives the worm 50 to rotate through the third rotating shaft 49, and the worm 50 drives the second connecting shaft 44 and the third bevel gear 46 to rotate through the worm gear 48. The third bevel gear 46 drives the two second supporting shafts 40 to rotate in opposite directions through the two fourth bevel gears 47. The two adjacent second supporting shafts 40 can drive the two positioning plates 42 to move toward the branch pipe through the mounting plate 41. When the four positioning plates 42 clamp the branch pipe, as the fourth damping disk 55 continues to rotate, the fourth damping disk 55 cannot drive the third damping disk 51 to rotate synchronously through the friction force. When the mounting seat 5 and the laser welding assembly move to the welding starting position, the connecting plate 28 and the first protective box 27 are driven by the first hydraulic telescopic rod 29. The first protective box 27 drives the first connecting shaft 31 and the third gear 32 to move through the first supporting part 33, and the third gear 32 slides relative to the second gear 30 and the fourth gear 56. When the third gear 32 is no longer meshed with the fourth gear 56, the first hydraulic telescopic rod 29 stops driving the connecting plate 28 and the first protective box 27 to move. When the first motor 37 drives the second rotating shaft 34 to rotate in the opposite direction, the third gear 32 cannot drive the third supporting shaft 52 to rotate through the fourth gear 56, and the damping block 54 is in contact with the third damping disk 51. The position of the third damping disk 51 is limited by the damping block 54 to prevent the third damping disk 51 and the third rotating shaft 49 from rotating and shaking due to non-human factors, thereby ensuring that the four positioning plates 42 are kept in the welding process. When the two mounting seats 5 are reversed 180 degrees, the movable plate 19 contacts with another stop block 23, and the mounting seat 5 moves to the preset position and stops automatically. When the laser welding assembly completes the welding of the connection between the branch pipe and the main pipe, the first hydraulic telescopic rod 29 drives the connecting plate 28 and the first protective box 27 to move, so that the third gear 32 is meshed with the fourth gear 56 again. At this time, the first motor 37 continuously drives the second rotating shaft 34 to rotate continuously, and the third gear 32 can drive the fourth gear 56 to rotate, so that the fourth damping disk 55 drives the third damping disk 51 to rotate in the opposite direction through friction, and the third damping disk 51 slides relative to the damping block 54, so that the plurality of positioning plates 42 no longer clamp the branch pipe.When the positioning plate 42 moves to the initial position relative to the second protection box 39, the first hydraulic telescopic rod 29 drives the connecting plate 28 to move again, so that the third gear 32 is no longer meshed with the fourth gear 56, and the first motor 37 can drive the second rotating shaft 34 to rotate, so that the mounting seat 5 and the laser welding assembly are moved to the bottom of the mounting shell 6 again, and the mounting seat 5 and the laser welding assembly are reset to the initial position relative to the mounting shell 6; The staff drives the two adjacent damping plates 63 to move away from each other so that the damping plate 63 no longer presses the fifth damping disk 62, and the compression spring 66 is in a compressed state, thereby releasing the limitation on the position of the laser welder 4. The staff drives the laser welder 4 to move, and the laser welder 4 drives the guide block 59 to slide in the third guide groove 58 through the connecting block 57, the fourth rotating shaft 61 and the side plate 60, so as to adjust the distance between the laser welder 4 and the part to be welded. The staff drives the laser welder 4 to rotate, so that the connecting block 57 drives the fourth rotating shaft 61 to rotate relative to the side plate 60, so as to change the inclination angle of the laser welder 4. When the position of the laser welder 4 is adjusted, the staff releases the damping plate 63, and the compression spring 66 drives the damping plate 63 to move relative to the second guide column 64 and the mounting seat 5, and the damping The plate 63 presses the fifth damping disk 62 to fix the fifth damping disk 62 relative to the damping plate 63 and the mounting seat 5, so that the laser welder 4 can be fixed relative to the mounting seat 5. The staff places the main pipeline to be welded on several brackets 67, supports the main pipeline through the brackets 67, drives the clamping plate 69 to move through the second hydraulic telescopic rod 68, and clamps the main pipeline with two adjacent clamping plates 69 to fix the main pipeline relative to the base 1. The second motor 70 drives the second screw rod 71 to rotate, and the second screw rod 71 can drive the mounting frame 3 and the movable seat 2 to move horizontally. At the same time, another mounting frame 3 slides relative to the third guide column 72 and the third support plate 76. The design of the third guide column 72 and the third support plate 76 can make the movable seat 2 and the two mounting frames 3 move smoothly relative to the base 1.

[0028] 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.

[0029] 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 high-pressure pipeline welding device, comprising a base (1), characterized in that: A movable seat (2) is provided above the base (1), the base (1) is equipped with a clamping support for fixing the main pipeline, the movable seat (2) is fixedly equipped with two mounting frames (3), the base (1) is equipped with a translation mechanism for driving the two mounting frames (3) to move, a positioning structure for fixing the branch pipeline is installed on the top of the mounting frame (3), the two mounting frames (3) are fixedly connected to a mounting shell (6) on one side where they are close to each other, a mounting seat (5) is provided below the mounting shell (6), the mounting seat (5) is equipped with a laser welding assembly, and the mounting shell (6) is equipped with a welding adjustment structure for driving the mounting seat (5) to rotate around the branch pipeline.

2. A high-pressure pipeline welding device according to claim 1, characterized in that: The welding adjustment structure comprises an adjustment seat (7) arranged in a mounting shell (6), wherein the mounting shell (6) is a cavity structure with an opening at the bottom end, a first rotating shaft (8) rotatably connected passes through the adjustment seat (7), a first gear (9) is fixedly connected to the bottom end of the first rotating shaft (8), a first rack (10) meshing with the first gear (9) is fixedly connected to the inner wall of the mounting shell (6), a second rack (12) meshing with the first gear (9) is fixedly connected to the top of the mounting seat (5), and the second gear (12) meshing with the first gear (9) is fixedly connected to the top of the mounting seat (5). The top of the rack (12) is fixedly connected to a first guide bar (13), the bottom of the adjustment seat (7) is provided with a first guide groove (14), and the first guide bar (13) passes through the first guide groove (14), both ends of the mounting shell (6) are respectively provided with first avoidance holes (18) adapted to the second rack (12) and the first guide bar (13), the mounting shell (6) is provided with a guide member adapted to the adjustment seat (7), and the movable seat (2) is provided with a toggle mechanism for toggle the first rotating shaft (8) to move.

3. A high-pressure pipeline welding device according to claim 2, characterized in that: The guide member comprises a fixing strip (15) fixedly mounted on the inner wall of the top of the mounting shell (6), a second guide groove (16) being provided at the bottom of the fixing strip (15), a second guide strip (17) being fixedly connected to the top of the adjustment seat (7), and the second guide strip (17) being located in the second guide groove (16).

4. A high-pressure pipeline welding device according to claim 2, characterized in that: The toggle mechanism comprises a movable plate (19) arranged on the top of the mounting shell (6); a third avoidance hole (73) adapted to the first rotating shaft (8) is formed on the top inner wall of the mounting shell (6); the first rotating shaft (8) passes through the third avoidance hole (73); a rectangular hole (20) is formed on the movable plate (19); the top end of the first rotating shaft (8) is located in the rectangular hole (20); a first screw rod (21) and a first guide column (22) are passed through the movable plate (19); the two first screw rods (21) and the first guide column (22) are connected to the movable plate (19); The threads on the screw (21) are in opposite directions, and the movable plate (19) and the first screw rod (21) are connected in a threaded manner, the first guide column (22) and the movable seat (2) are fixedly connected, the first screw rod (21) and the movable seat (2) are rotatably connected, and the movable seat (2) is provided with a damping driver for driving the first screw rod (21) to rotate, and the top of the mounting shell (6) is fixedly connected with two stop blocks (23), and the two stop blocks (23) are respectively located on both sides of the movable plate (19).

5. A high-pressure pipeline welding device according to claim 4, characterized in that: The damping driver comprises a first damping disc (24) fixedly mounted on the end of a first screw rod (21); a first support shaft (11) is provided on a side of the first damping disc (24) away from the movable seat (2); a first fixing frame (25) is provided on an outer rotating sleeve of the first support shaft (11); the first fixing frame (25) and the movable seat (2) are fixedly connected; two ends of the first support shaft (11) are respectively fixedly connected with a second damping disc (26) and a second gear (30); the second damping disc (26) and the first damping disc (24) are in contact; and a driving member adapted to the second gear (30) is installed on the movable seat (2).

6. A high-pressure pipeline welding device according to claim 5, characterized in that: The driving member comprises two first protection boxes (27) arranged on a side of the movable seat (2) away from the mounting frame (3); a sealing sleeve (38) is provided on the outer sleeve of the first protection box (27), and the sealing sleeve (38) is fixedly connected to the movable seat (2); the two first protection boxes (27) are fixedly connected via a connecting plate (28); at least one first hydraulic telescopic rod (29) is fixedly installed on the movable seat (2), and the telescopic end of the first hydraulic telescopic rod (29) is fixedly connected to the connecting plate (28); a first support portion (33) is fixedly connected inside the first protection box (27), and the first support portion (33) is connected to the first support portion (33). A first connecting shaft (31) is passed through the first connecting shaft (31) for rotational connection, and a third gear (32) meshing with the second gear (30) is fixedly mounted on the first connecting shaft (31), a first motor (37) is fixedly mounted on one of the first protection boxes (27), an output end of the first motor (37) is fixedly connected to a second rotating shaft (34), and the second rotating shaft (34) is rotationally connected to the two first protection boxes (27) respectively, an outer fixed sleeve of the second rotating shaft (34) is provided with two first bevel gears (35), and a second bevel gear (36) meshing with the first bevel gear (35) is fixedly mounted on the first connecting shaft (31).

7. A high-pressure pipeline welding device according to claim 6, characterized in that: The positioning structure comprises a second protection box (39) fixedly mounted on the mounting frame (3), and the second protection box (39) is located above the mounting shell (6), two second support shafts (40) are arranged in the second protection box (39), the ends of the two second support shafts (40) that are far away from each other are respectively rotatably connected to the inner wall of the second protection box (39), and the ends of the two second support shafts (40) that are close to each other are respectively fixedly connected to the mounting plate (41), and the second protection box (39) is provided with a second avoidance hole (43) that is compatible with the mounting plate (41). The mounting plate (41) passes through the second avoidance hole (43), positioning plates (42) are symmetrically provided on both sides of the second protection box (39), and the two mounting plates (41) are fixedly connected to the two positioning plates (42) respectively, a second support portion (45) is fixedly connected inside the second protection box (39), a second connecting shaft (44) connected in rotation passes through the second supporting portion (45), a worm gear (48) and a third bevel gear (46) are fixedly connected at both ends of the second connecting shaft (44), and a fourth bevel gear (46) is fixedly provided on the outer fixed sleeve of the second support shaft (40). gear (47), the two fourth bevel gears (47) are meshed with the third bevel gear (46), the second protection box (39) is rotatably connected with a third rotating shaft (49), the third rotating shaft (49) is fixedly mounted with a worm (50) located in the second protection box (39), and the worm (50) is meshed with the worm wheel (48), the third rotating shaft (49) is rotatably connected with the movable seat (2), the third rotating shaft (49) is fixedly mounted with a third damping plate (51) located in the first protection box (27), and the first protection box (27) is provided with a third support The third support shaft (52) is provided with a second fixed frame (53) on the outer rotating sleeve of the third support shaft (52), the second fixed frame (53) and the movable seat (2) are fixedly connected, the two ends of the third support shaft (52) are respectively fixedly connected with a fourth damping plate (55) and a fourth gear (56), the fourth damping plate (55) and the third damping plate (51) are in contact with each other, the second fixed frame (53) is fixedly installed with a damping block (54), the damping block (54) and the third damping plate (51) are in contact with each other, and the fourth gear (56) and the third gear (32) are meshed with each other.

8. A high pressure pipeline welding device according to claim 1, characterized in that: The laser welding assembly comprises a laser welder (4) arranged below the mounting seat (5); a connecting block (57) is fixedly connected to the top of the laser welder (4); a third guide groove (58) is provided at the bottom of the mounting seat (5); a guide block (59) is provided in the third guide groove (58); side plates (60) are symmetrically provided on both sides of the connecting block (57); the side plates (60) and the guide blocks (59) are fixedly connected; and the sides of the two side plates (60) that are close to each other are respectively in contact with the two sides of the connecting block (57); and fourth rotating shafts (61) are respectively fixedly connected to the two sides of the connecting block (57); and the fourth rotating shaft (61) penetrates The side plate (60) is fixedly connected to a fifth damping plate (62) at one end of the fourth rotating shaft (61) away from the connecting block (57); a damping plate (63) is provided in contact with the side of the fifth damping plate (62) away from the fourth rotating shaft (61); two second guide columns (64) are passed through the damping plate (63); one end of the second guide column (64) is fixedly connected to the mounting seat (5); the other end of the second guide column (64) is fixedly connected to the fixing plate (65); a compression spring (66) is sleeved on the outside of the second guide column (64); two ends of the compression spring (66) are respectively in contact with the damping plate (63) and the fixing plate (65).

9. A high-pressure pipeline welding device according to claim 1, characterized in that: The clamping support comprises a plurality of brackets (67) fixedly mounted on the top of the base (1); two groups of clamps are arranged above the base (1); each group of clamps comprises two clamping plates (69); a first support plate (74) is respectively arranged on the side away from each other of two adjacent clamping plates (69); the first support plate (74) is fixedly connected to the base (1); a second hydraulic telescopic rod (68) is fixedly connected to the side of the first support plate (74) facing the clamping plate (69); and the telescopic end of the second hydraulic telescopic rod (68) is fixedly connected to the clamping plate (69); the translation mechanism comprises two second support plates fixedly mounted on the top of the base (1) (75), a second motor (70) is fixedly mounted on one of the second support plates (75), a second screw rod (71) is rotatably connected to the other second support plate (75), and the output end of the second motor (70) is fixedly connected to the second screw rod (71), a third guide column (72) is provided above the base (1), and both ends of the third guide column (72) are respectively fixedly connected to the base (1) through the third support plate (76), the second screw rod (71) and the third guide column (72) respectively penetrate the two mounting frames (3), and the second screw rod (71) and the mounting frame (3) are connected in a threaded manner.

10. A high-pressure pipeline welding method, using the high-pressure pipeline welding device according to claim 1, characterized in that: The following steps are involved: Step 1: The main pipe is clamped and fixed by a clamping support, with the opening of the main pipe to be welded facing upwards, and the mounting frame (3) and the movable seat (2) are driven to move to a preset position by a translation mechanism; Step 2: The staff places the branch pipe to be welded above the main pipe, fixes the branch pipe through the positioning structure on the mounting frame (3), and the two welding adjustment structures respectively drive the two mounting seats (5) to rotate forward 90 degrees to calibrate the welding starting position of the mounting seats (5) and the laser welding assembly; Step 3: The two welding adjustment structures respectively drive the two mounting seats (5) to rotate 180 degrees, and the laser welding assembly welds the connection between the branch pipe and the main pipe. After the welding is completed, the two welding adjustment structures respectively drive the two mounting seats (5) to rotate 90 degrees forward, so that the mounting seats (5) and the laser welding assembly are reset to the initial position relative to the mounting shell (6); Step 4: Release the fixation of the branch pipes through the positioning structure, drive the mounting frame (3) and the movable seat (2) to move to the next preset position through the translation mechanism, and return to step 2 until all the branch pipes are welded. Release the clamping fixation of the main pipe through the clamping support, and the staff can remove the welded pipe.

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