Intelligent welding device for special pipeline

Abstract

The invention discloses a special pipeline intelligent welding device, and belongs to the technical field of pipeline welding, the special pipeline intelligent welding device comprises a base, a supporting assembly, a limiting assembly, a driving assembly, an angle adjusting assembly, a welding gun and a controller, the upper surface of the base is fixedly connected with a vertical frame, and the upper surface of the vertical frame is fixedly connected with a second motor; and the output end of the second motor is fixedly connected with a second lead screw, the side surface of the second lead screw is in threaded connection with a block body, the side surface of the block body is fixedly connected with a transverse frame, and the lower surface of the transverse frame is fixedly connected with an L-shaped mounting plate. Lifting of the transverse frame is achieved through the vertical frame, the second motor and the second lead screw, the height of the transverse frame is accurately controlled in cooperation with a first position sensor, it is ensured that the center of a semi-ring rack is aligned with the center of a pipeline, an industrial camera and the second position sensor monitor a weld joint in real time, the angle is adjusted through an electric telescopic rod, and the accuracy and adaptability of welding positioning are improved; and the welding requirements under different working conditions are met.

Description

Technical Field

[0001] This invention belongs to the field of pipeline welding technology, specifically relating to a special intelligent pipeline welding device. Background Technology

[0002] With the continuous development of industrial technology, special pipelines are increasingly widely used in aerospace, petrochemical, nuclear power and other fields. These special pipelines usually have special materials, complex structures and strict welding quality requirements. Traditional welding methods, such as manual electric arc welding and argon arc welding, have problems such as low welding efficiency, unstable quality and high requirements for welder skills, which make it difficult to meet the welding needs of special pipelines. Laser welding, as an advanced welding technology, has advantages such as high energy density, small heat-affected zone, fast welding speed, and high weld quality, and has broad application prospects in special pipeline welding. However, existing laser welding equipment still has some shortcomings when welding special pipelines, such as the inability to accurately detect and position the welding position of the pipeline, and the lack of real-time monitoring and quality control of the welding process. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a special intelligent pipe welding device, including a base, a support component, a limiting component, a driving component, an angle adjustment component, a welding gun and a controller; A support frame is fixedly connected to the upper surface of the base, a second motor is fixedly connected to the upper surface of the support frame, a second lead screw is fixedly connected to the output end of the second motor, a block is threadedly connected to the side surface of the second lead screw, a crossbar is fixedly connected to the side surface of the block, an L-shaped mounting plate is fixedly connected to the lower surface of the crossbar, and a first position sensor is fixedly connected to the lower surface of the L-shaped mounting plate. The drive assembly includes a third motor, gears, a semi-ring rack and pinion, and a mounting bracket. The angle adjustment assembly includes an electric telescopic rod and a second plate. An industrial camera is fixedly connected to the side surface of the second plate, and a second position sensor is fixedly connected to the lower surface of the second plate.

[0004] The technical solution adopted to solve the above technical problems is as follows: The structure realizes the lifting and lowering of the cross frame through the upright frame, the second motor and the second lead screw, and the height is precisely controlled by the first position sensor to ensure that the center of the semi-ring rack is aligned with the center of the pipe. The industrial camera and the second position sensor monitor the weld in real time, and the electric telescopic rod adjusts the angle, which improves the accuracy and adaptability of welding positioning and meets the welding needs under different working conditions.

[0005] Further, the side surface of the base is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first lead screw, the side surface of the first lead screw is threadedly connected with a displacement block, and the support assembly comprises a fixed seat, a U-shaped frame and a support roller.

[0006] Through the above technical scheme, the first motor and the first lead screw on the side surface of the base drive the displacement block to move, facilitating the quick butt joint of the two pipe sections, the support roller reduces the friction of the pipe movement, four sets of limiting assemblies are respectively arranged on the base and the displacement block, the stability of the pipe placement is enhanced, laying a foundation for subsequent accurate welding, and the butt joint efficiency is improved.

[0007] Further, the support assembly has four sets, two sets of the support assembly are fixedly connected with the upper surface of the base, and the other two sets of the support assembly are fixedly connected with the upper surface of the displacement block, the upper surface of the fixed seat is fixedly connected with a U-shaped frame, and the side surface of the U-shaped frame is rotatably connected with the support roller.

[0008] Through the above technical scheme, the fixed seats of the four sets of support assemblies are respectively fixed on the base and the displacement block, the U-shaped frame cooperates with the support roller, which can stably support the pipe and reduce the resistance when the pipe rotates, and the symmetrical layout ensures that the pipe is balanced in the welding process, avoids affecting the welding quality due to shaking, and improves the reliability of the device.

[0009] Further, the upper surface of the base is fixedly connected with a vertical rod, the side surface of the vertical rod is fixedly connected with a horizontal rod through a screw, the limiting assembly comprises a first air cylinder and a limiting block, the first air cylinder is fixedly installed on the upper surface of the horizontal rod, and the limiting block is fixedly installed on the output end of the first air cylinder.

[0010] Through the above technical scheme, the vertical rod and the horizontal rod are fixed through a screw, facilitating the adjustment of the position of the limiting assembly, the first air cylinder drives the limiting block to press the pipe, realizing quick limiting and releasing, the design can adapt to the fixing requirements of pipes with different diameters, is convenient to operate, reduces the time and error of manual fixing, and guarantees the stability of the pipe during welding.

[0011] Further, the side surface of the horizontal frame is fixedly connected with a mounting half ring, the side inner wall of the mounting half ring is fixedly connected with a half ring rack, the side surface of the half ring rack is engaged with a gear, the upper surface of the horizontal frame is fixedly connected with a vertical plate, the side surface of the vertical plate is fixedly connected with a third motor, and the output end of the third motor is fixedly connected with the gear.

[0012] Through the above technical scheme, the mounting half ring fixes the half ring rack, the third motor drives the gear to engage with and rotate the half ring rack, so that the welding gun moves along an arc trajectory, the welding of the annular weld of the pipe can be completed, the vertical plate fixes the third motor to ensure stable transmission, this structure improves the continuity and uniformity of welding, and improves the welding efficiency.

[0013] Further, the side surface of the half-ring rack is fixedly connected with a mounting frame, the side surface of the mounting frame is fixedly connected with a fourth motor, the output end of the fourth motor is fixedly connected with a threaded rod, and the side surface of the threaded rod is threadedly connected with a moving block.

[0014] Through the above technical scheme, the fourth motor on the mounting frame drives the threaded rod to rotate, drives the moving block to move transversely, and realizes the fine adjustment of the horizontal position of the welding gun. The design can accurately adjust the relative position of the welding gun and the weld, ensures that the welding point is accurate, and is especially suitable for the case that the weld position has a small deviation, and improves the welding precision.

[0015] Further, the lower surface of the moving block is fixedly connected with a Z-shaped plate, the upper surface of the Z-shaped plate is fixedly connected with a second air cylinder, the output end of the second air cylinder is fixedly connected with a plate one, the side inner wall of the plate one is rotatably connected with a plate two, the lower surface of the plate one is fixedly connected with a vertical block one, the lower surface of the plate two is fixedly connected with a vertical block two, and the two ends of the electric telescopic rod are rotatably connected with the vertical block one and the vertical block two.

[0016] Through the above technical scheme, the second air cylinder on the Z-shaped plate adjusts the height of the welding gun, the plate one and the plate two are rotatably connected, and cooperate with the electric telescopic rod to realize angle adjustment. This multi-dimensional adjustment structure makes the welding gun adapt to different welding angles, flexibly copes with complex welding conditions, and enhances the universality of the device.

[0017] Further, the upper surface of the plate two is provided with a mounting cavity, the welding gun is located in the mounting cavity, the side surface of the welding gun is provided with a plurality of holes, and the side surface of the plate two is threadedly connected with a bolt.

[0018] Through the above technical scheme, the welding gun is installed through the mounting cavity, and is fixed by the bolt passing through the hole. Different models of welding guns can be quickly replaced, the detachable structure reduces the difficulty of equipment maintenance and replacement of accessories, saves time cost, and can flexibly match the welding gun according to the welding demand, and the adaptability of the device is improved.

[0019] The beneficial effects of the present application are as follows: (1) The device realizes accurate butt joint of the pipeline through the supporting assembly, the displacement block and the first motor, the first air cylinder of the limiting assembly is pressed, the positioning during welding is ensured, the distance measurement and the controller are linked, the center of the half-ring rack is quickly consistent with the center height of the pipeline, the manual alignment time is greatly reduced, and the preparation efficiency and positioning accuracy before welding are improved; (2) The industrial camera and the position sensor detect the contact part of the pipeline in real time, the fourth motor cooperates with the threaded rod to finely adjust the position of the welding gun, the second cylinder adjusts the height of the welding gun, ensures that the welding gun is always aligned with the weld, the driving assembly drives the welding gun to rotate along the half-ring rack to realize ring welding, and the angle adjusting assembly can adapt to different welding requirements, and the consistency of the weld quality is significantly improved; (3) After welding, the limiting rotating pipeline can be released, the second welding is performed on the unwelded part, the full-circle welding requirement of the pipeline with different lengths and shapes is met, the linkage of the motors, the cylinders and the controller realizes automatic operation, reduces manual intervention, reduces the operation difficulty, the multiple sensors cooperate to ensure the stability and controllability of the welding process, and the overall welding efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a first perspective view of a special pipeline intelligent welding device; Figure 2 is a second perspective view of a special pipeline intelligent welding device; Figure 3 is a partial structure schematic view of a special pipeline intelligent welding device; Figure 4 is a support assembly schematic view of a special pipeline intelligent welding device; Figure 5 is a limiting assembly schematic view of a feeding support structure of a special pipeline intelligent welding device; Figure 6 is a driving assembly structure view of a special pipeline intelligent welding device; Figure 7 is an exploded view of a partial structure of a special pipeline intelligent welding device; Figure 8 is an angle adjusting assembly structure view of a special pipeline intelligent welding device; Figure 9 is a welding gun schematic view of a special pipeline intelligent welding device.

[0021] Reference numerals: 1. Base; 2. Support assembly; 201. Fixed seat; 202. U-shaped frame; 203. Support roller; 3. Limiting assembly; 301. First cylinder; 302. Limiting block; 4. Upright pole; 5. Crossbar; 6. First motor; 7. First lead screw; 8. Displacement block; 9. Upright frame; 10. Second motor; 11. Second lead screw; 12. Block; 13. Crossbar; 14. L-shaped mounting plate; 15. First position sensor; 16. Mounting semi-ring; 17. 18. Semi-ring rack; 19. Vertical plate; 20. Third motor; 21. Gear; 22. Mounting bracket; 23. Fourth motor; 24. Threaded rod; 25. Moving block; 26. Z-shaped plate; 27. Second cylinder; 28. Plate 1; 29. ​​Plate 2; 30. Mounting cavity; 31. Welding gun; 32. Hole; 33. Bolt; 34. Industrial camera; 35. Second position sensor; 36. Vertical block 1; 37. Electric telescopic rod; 38. Vertical block 2; 39. Controller. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] like Figures 1-9 As shown, a special intelligent pipe welding device according to this embodiment includes a base 1, a support component 2, a limiting component 3, a drive component, an angle adjustment component, a welding gun 30, and a controller 38. A first motor 6 is fixedly connected to the side surface of the base 1, and a first lead screw 7 is fixedly connected to the output end of the first motor 6. A displacement block 8 is threadedly connected to the side surface of the first lead screw 7. The limiting component 3 includes a fixed seat 201, a U-shaped frame 202, and a support roller 203. There are four sets of support components 2, of which the fixed seats 201 of two sets of support components 2 are fixedly connected to the upper surface of the base 1, and the fixed seats 201 of the other two sets of support components 2 are fixedly connected to the upper surface of the displacement block 8. A U-shaped frame 202 is fixedly connected to the upper surface of the fixed seat 201, and the side surface of the U-shaped frame 202 is rotatably connected to the support roller 203.

[0024] The first motor 6 drives the first lead screw 7 to rotate, which in turn drives the displacement block 8 to move, causing the two sets of support components 2 fixedly installed on the displacement block 8 to move, so that the two pipe sections placed above the four sets of support components 2 are brought closer together, which facilitates subsequent welding. The support components 2 are used to support the two pipe sections to be welded, keeping them away from the base 1. The fixed seats 201 of the four sets of support components 2 are fixed on the base 1 and the displacement block 8 respectively. The U-shaped frame 202 cooperates with the support roller 203, which can not only stably support the pipe, but also reduce the resistance when the pipe rotates. This symmetrical layout ensures that the pipe is subjected to balanced force during the welding process, avoids the impact of shaking on the welding quality, and improves the reliability of the device.

[0025] When the device is used to weld the pipes, the two pipes are placed on the support assembly 2, one of which is placed on the support assembly 2 fixedly installed on the base 1 and has one end close to the middle part of the base 1, and the other is placed on the support assembly 2 fixedly installed on the upper surface of the displacement block 8, at this time the first motor 6 is started to rotate the first lead screw 7 to drive the other end pipe on the upper surface to move, and after the two pipes are in contact, the first motor 6 is turned off, at this time the first cylinder 301 of the limiting assembly 3 is started to press and limit the two pipes by the limiting block 302, the distance between the pipe center and the base 1 is measured, and then the measured value is input into the controller 38, when the second motor 10 adjusts the height of the cross beam 13 and the semi-ring rack 17 is concentric with the placed and installed pipe, the first position sensor 15 monitors the height in real time and transmits the result to the controller 38, and the controller 38 compares the received information with the input information to turn off the second motor 10.

[0026] The controller 38, the first cylinder 301, the first motor 6, the second motor 10, the first position sensor 15, the third motor 19, the fourth motor 22, the second cylinder 26, the industrial camera 33, the second position sensor 34 and the electric telescopic rod 36 are electrically connected with an external power supply, the first cylinder 301, the first motor 6, the second motor 10, the first position sensor 15, the third motor 19, the fourth motor 22, the second cylinder 26, the industrial camera 33, the second position sensor 34 and the electric telescopic rod 36 are electrically connected with the controller 38, and the welding gun 30 is connected with an external welding device, which is known to those skilled in the art.

[0027] The upper surface of the base 1 is fixedly connected with the vertical rod 4, the side surface of the vertical rod 4 is fixedly connected with the horizontal rod 5 through screws, the limiting assembly 3 includes the first cylinder 301 and the limiting block 302, the first cylinder 301 is fixedly installed on the upper surface of the horizontal rod 5, and the limiting block 302 is fixedly installed on the output end of the first cylinder 301, the vertical rod 4 and the horizontal rod 5 are fixed by screws, so that the position of the limiting assembly 3 can be adjusted, the first cylinder 301 drives the limiting block 302 to press the pipe to realize quick limiting and releasing, this design can adapt to the fixing requirements of pipes with different diameters, is convenient to operate, reduces the time and error of manual fixing, and guarantees the stability of the pipe during welding.

[0028] The upper surface of the base 1 is fixedly connected with a stand 9, the upper surface of the stand 9 is fixedly connected with a second motor 10, the output end of the second motor 10 is fixedly connected with a second lead screw 11, the side surface of the second lead screw 11 is threadedly connected with a block 12, the side surface of the block 12 is fixedly connected with a cross frame 13, the second motor 10 drives the second lead screw 11 to rotate after starting, and then the block 12 is displaced to drive the cross frame 13 to displace up and down to adjust the height, the lower surface of the cross frame 13 is fixedly connected with an L-shaped mounting plate 14, the lower surface of the L-shaped mounting plate 14 is fixedly connected with a first position sensor 15, the first position sensor 15 is used for monitoring the distance between the L-shaped mounting plate 14 and the base 1, and the bottom surface of the L-shaped mounting plate 14 is located at the same horizontal plane as the center of the half-ring rack 17.

[0029] The driving assembly comprises a third motor 19, a gear 20, the half-ring rack 17 and a mounting frame 21, and the angle adjusting assembly comprises an electric telescopic rod 36 and a plate 28, the side surface of the plate 28 is fixedly connected with an industrial camera 33, the industrial camera 33 is used for monitoring the situation before, during and after welding in real time, the lower surface of the plate 28 is fixedly connected with a second position sensor 34, the second position sensor 34 is used for monitoring the position of the welding seam head, the upper surface of the plate 28 is provided with a mounting cavity 29, the mounting cavity 29 is used for mounting a welding gun 30, the welding gun 30 is located in the mounting cavity 29, the side surface of the welding gun 30 is provided with a plurality of holes 31, the side surface of the plate 28 is threadedly connected with a bolt 32, the bolt 32 is screwed into the plate 28 and then inserted into the hole 31 of the welding gun 30, and the bolt 32 is used for fixing the mounting position of the welding gun 30.

[0030] The side surface of the cross frame 13 is fixedly connected with a mounting half-ring 16, the mounting half-ring 16 is used for mounting the half-ring rack 17, the side inner wall of the mounting half-ring 16 is fixedly connected with the half-ring rack 17, the side surface of the half-ring rack 17 is engaged with the gear 20, the upper surface of the cross frame 13 is fixedly connected with a vertical plate 18, the side surface of the vertical plate 18 is fixedly connected with the third motor 19, the output end of the third motor 19 is fixedly connected with the gear 20, the side surface of the half-ring rack 17 is fixedly connected with the mounting frame 21, the mounting half-ring 16 fixes the half-ring rack 17, the third motor 19 drives the gear 20 and the half-ring rack 17 to rotate, so that the welding gun 30 moves along an arc trajectory, the welding of the annular welding seam of the pipeline can be completed, the vertical plate 18 fixes the third motor 19 to ensure stable transmission, and the continuity and uniformity of welding are improved, and the welding efficiency is improved.

[0031] The side surface of the mounting frame 21 is fixedly connected with a fourth motor 22, the output end of the fourth motor 22 is fixedly connected with a threaded rod 23, the side surface of the threaded rod 23 is threadedly connected with a moving block 24, the fourth motor 22 drives the threaded rod 23 to rotate, and in turn drives the moving block 24 to displace, so that the position of the installed welding gun 30 can be finely adjusted, the welding gun 30 can be aligned with the gap between the two pipes, the welding point is ensured to be accurate, and the welding precision is improved, especially in the case that there is a small deviation in the welding position, the lower surface of the moving block 24 is fixedly connected with a Z-shaped plate 25, the upper surface of the Z-shaped plate 25 is fixedly connected with a second air cylinder 26, the output end of the second air cylinder 26 is fixedly connected with a plate block one 27, the side inner wall of the plate block one 27 is rotatably connected with a plate block two 28, the lower surface of the plate block one 27 is fixedly connected with a vertical block one 35, the lower surface of the plate block two 28 is fixedly connected with a vertical block two 37, and the two ends of the electric telescopic rod 36 are rotatably connected with the vertical block one 35 and the vertical block two 37 respectively.

[0032] The second air cylinder 26 on the Z-shaped plate 25 adjusts the height of the welding gun 30, the plate block one 27 is rotatably connected with the plate block two 28, and angle adjustment is realized in cooperation with the electric telescopic rod 36, so that the welding gun 30 can adapt to welding requirements of different angles, flexibly cope with complex welding conditions, and the versatility of the device is enhanced.

[0033] The working principle of the embodiment is as follows, when the device is used for welding pipes, two pipes are respectively placed on the support assemblies 2, one pipe is placed on the support assembly 2 fixedly installed on the base 1 and makes one end of the pipe close to the middle part of the base 1, and the other pipe is placed on the support assembly 2 fixedly installed on the upper surface of the displacement block 8, at this time, the first motor 6 is started to drive the first lead screw 7 to rotate, the other end pipe above is moved, the two pipes are contacted, and then the first motor 6 is turned off, at this time, the first air cylinder 301 of the limiting assembly 3 is started, the limiting block 302 is used for pressing and limiting the two pipes, the distance between the pipe center and the base 1 is measured, and then the measured value is input into the controller 38.

[0034] The second motor 10 is started to rotate the second screw rod 11, and then drive the cross frame 13 to move down. The first position sensor 15 detects the distance between the semi-circular rack 17 and the base 1 and transmits the detection result to the controller 38. When the distance is consistent with the input value, the second motor 10 is stopped. At this time, the industrial camera 33 and the second position sensor 34 are simultaneously used to detect the contact position of the two pipes. The fourth motor 22 is started to finely adjust the position of the welding gun 30, so that the welding gun 30 is located directly above the contact position. The second cylinder 26 is started to adjust the height of the welding gun 30. During welding, only the welding gun 30 and the third motor 19 of the driving assembly are started. After the third motor 19 is started, the gear 20 is rotated to drive the semi-circular rack 17 to rotate, and then the welding gun 30 rotates to weld the two pipes together. After welding, the limiting assembly 3 is released, and the pipes are rotated again to start the welding gun 30 and the third motor 19 to weld the un-welded part. Before welding, the angle of the welding gun 30, the industrial camera 33 and the second position sensor 34 can be adjusted through the angle adjusting assembly.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A special pipe intelligent welding device, characterized in that: It includes a base (1), a support assembly (2), a limiting assembly (3), a drive assembly, an angle adjustment assembly, a welding gun (30), and a controller (38); A support frame (9) is fixedly connected to the upper surface of the base (1), a second motor (10) is fixedly connected to the upper surface of the support frame (9), a second lead screw (11) is fixedly connected to the output end of the second motor (10), a block (12) is threadedly connected to the side surface of the second lead screw (11), a cross frame (13) is fixedly connected to the side surface of the block (12), an L-shaped mounting plate (14) is fixedly connected to the lower surface of the cross frame (13), and a first position sensor (15) is fixedly connected to the lower surface of the L-shaped mounting plate (14). The drive assembly includes a third motor (19), a gear (20), a semi-ring rack (17) and a mounting bracket (21). The angle adjustment assembly includes an electric telescopic rod (36) and a second plate (28). An industrial camera (33) is fixedly connected to the side surface of the second plate (28), and a second position sensor (34) is fixedly connected to the lower surface of the second plate (28).

2. The intelligent welding device for special pipe according to claim 1, characterized in that, The base (1) has a first motor (6) fixedly connected to its side surface. The output end of the first motor (6) is fixedly connected to a first lead screw (7). The side surface of the first lead screw (7) is threaded with a displacement block (8). The limiting component (3) includes a fixed seat (201), a U-shaped frame (202), and a support roller (203).

3. The intelligent special pipe welding device according to claim 1, wherein, The support assembly (2) has four sets, of which the fixing seats (201) of two sets of support assemblies (2) are fixedly connected to the upper surface of the base (1), and the fixing seats (201) of the other two sets of support assemblies (2) are fixedly connected to the upper surface of the displacement block (8). A U-shaped frame (202) is fixedly connected to the upper surface of the fixing seat (201), and the side surface of the U-shaped frame (202) is rotatably connected to the support roller (203).

4. The intelligent apparatus for welding special pipes according to claim 1, wherein, The upper surface of the base (1) is fixedly connected to a vertical rod (4), and the side surface of the vertical rod (4) is fixedly connected to a horizontal rod (5) by screws. The limiting component (3) includes a first cylinder (301) and a limiting block (302). The first cylinder (301) is fixedly installed on the upper surface of the horizontal rod (5), and the limiting block (302) is fixedly installed on the output end of the first cylinder (301).

5. The intelligent apparatus for welding special pipes according to claim 1, wherein, A mounting half-ring (16) is fixedly connected to the side surface of the cross frame (13). The inner side wall of the mounting half-ring (16) is fixedly connected to the half-ring rack (17). The side surface of the half-ring rack (17) meshes with the gear (20). A vertical plate (18) is fixedly connected to the upper surface of the cross frame (13). The side surface of the vertical plate (18) is fixedly connected to the third motor (19). The output end of the third motor (19) is fixedly connected to the gear (20).

6. The intelligent apparatus for welding special pipes according to claim 1, wherein, The side surface of the half ring rack (17) is fixedly connected with a mounting frame (21), the side surface of the mounting frame (21) is fixedly connected with a fourth motor (22), the output end of the fourth motor (22) is fixedly connected with a threaded rod (23), and the side surface of the threaded rod (23) is threadedly connected with a moving block (24).

7. The intelligent apparatus for welding special pipes according to claim 6, characterized in that, The lower surface of the moving block (24) is fixedly connected with a Z-shaped plate (25), the upper surface of the Z-shaped plate (25) is fixedly connected with a second air cylinder (26), the output end of the second air cylinder (26) is fixedly connected with a plate block one (27), the side inner wall of the plate block one (27) is rotatably connected with a plate block two (28), the lower surface of the plate block one (27) is fixedly connected with a vertical block one (35), the lower surface of the plate block two (28) is fixedly connected with a vertical block two (37), and the two ends of the electric telescopic rod (36) are rotatably connected with the vertical block one (35) and the vertical block two (37) respectively.

8. The intelligent apparatus for welding special pipes according to claim 1, wherein, The upper surface of the plate block two (28) is provided with a mounting cavity (29) penetrating through, the welding gun (30) is located in the mounting cavity (29), the side surface of the welding gun (30) is provided with a plurality of holes (31), and the side surface of the plate block two (28) is threadedly connected with a bolt (32).

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