An automatic welding device for pipelines in water conservancy construction and its usage method

Abstract

This invention provides an automatic welding device and its method of use for pipelines in water conservancy construction, relating to the technical field of water conservancy construction. The device includes: a movable carrier, a bearing side seat, a welding support frame, a driving support frame, a welding support, and a protective support frame. An adjustable carrier frame is fixedly mounted on the top of the movable carrier. The bearing side seat is fixedly mounted on the side of the bearing support frame. The welding support frame is fixedly mounted on the side of the bearing side seat. The driving support frame is rotatably mounted inside the welding groove. The welding support is fixedly mounted on the side of the assembly side frame. When the welding device moves back and forth along a circular path on the side of the pipeline supported by the driving support frame, the welding device automatically welds the pipeline joint. A cleaning brush provides efficient friction to the area to be welded on the pipeline, and automatically removes the welding slag from the weld area. This solves the problems of long welding intervals, poor continuity, and the need for manual cleaning of residual welding slag after welding in traditional welding devices.

Description

Technical Field

[0001] This invention relates to the technical field of water conservancy construction, and in particular to an automatic welding device for water conservancy construction pipelines and its usage method. Background Technology

[0002] Water conservancy pipelines are core components in water conservancy projects used for transporting, diverting, and allocating water resources. They are widely used in scenarios such as water conveyance and irrigation, urban water supply, flood control and drainage, and inter-basin water transfer. They need to withstand water pressure impact, soil corrosion, and the influence of complex outdoor environments for a long time, and have extremely high requirements for sealing, pressure resistance, and durability. In the construction of water conservancy projects, as the core component of the water conveyance and diversion system, the construction quality of the water conservancy pipeline joints directly determines the overall safety and service life of the project. The sealing of the joints (welding, flanges, sockets, etc.) directly determines whether there is leakage, which is a key link in the construction of water conservancy pipelines.

[0003] Based on the above, traditional welding equipment requires completing the welding of one pipe before disassembling and positioning the next pipe. Frequent disassembly and assembly operations result in long intervals between welding processes and poor continuity, making it difficult to meet the efficiency requirements of large-scale pipeline laying. The welding slag remaining after welding needs to be cleaned manually, which is not only labor-intensive, but also prone to leaving corrosion hazards if not cleaned thoroughly, affecting the service life of the pipeline. Summary of the Invention

[0004] In view of this, the present invention provides an automatic welding device and its method of use for water conservancy construction pipelines. It has a movable carrier, a bearing side seat, a welding support frame, a driving support frame, a welding support, and a protective support frame. This solves the problems of traditional welding devices, which require welding one pipeline before disassembling and positioning the next pipeline. The frequent disassembly and assembly operations result in long intervals between welding processes, poor continuity, and difficulty in meeting the efficiency requirements of large-scale pipeline laying. The welding slag residue after welding needs to be cleaned manually, which is not only labor-intensive but also prone to leaving corrosion hazards if not cleaned thoroughly, affecting the service life of the pipeline.

[0005] This invention provides an automatic welding device for pipelines in water conservancy construction and its method of use. Its structural design includes the following main components: a movable carrier, a bearing side seat, a welding support frame, a driving support frame, a welding support, and a protective support frame.

[0006] An adjustable frame is fixedly mounted on the top of the movable carrier, and an adjustable bracket is fixedly mounted on the top of the movable carrier. A load-bearing support frame is sleeved on the outer side of the adjustable frame, and an adjustable support is fixedly mounted on the inner side of the load-bearing support frame. A guide groove is opened on the side of the load-bearing support frame. A load-bearing side seat is fixedly mounted on the side of the load-bearing support frame. A drive gear shaft is rotatably mounted at both ends of the load-bearing side seat. A drive gear block is fixedly mounted on the outer side of the drive gear shaft. A transmission gear column is rotatably mounted on the side of the load-bearing side seat, and a transmission gear chain is sleeved on the outer side of the drive gear shaft. A welding support frame is fixedly mounted on the side of the load-bearing side seat, and a welding groove is opened on the side of the welding support frame. The drive support frame is rotatably mounted inside the welding groove. An assembly side frame is fixedly mounted on the side of the drive support frame. A rotation groove is opened on the side of the assembly side frame. A positioning support frame is fixedly mounted on the side of the drive support frame. A locking bolt is provided on the side of the positioning support frame. An adjusting gear block is provided on the side of the positioning support frame. A welding support is fixedly mounted on the side of the assembly side frame. An assembly support cylinder is fixedly mounted inside the welding support. A welding device is slidably mounted inside the assembly support cylinder. A protective support frame is fixedly mounted on the side of the assembly side frame.

[0007] Furthermore, the side of the adjustable frame is also provided with an adjusting support groove and a hydraulic support; the adjusting support groove is opened on the side of the adjustable frame, and the hydraulic support is fixedly installed inside the adjusting support groove.

[0008] Furthermore, the side of the bearing side seat is also provided with: a mounting side frame and a drive motor; the mounting side frame is fixedly installed on the side of the bearing side seat, and the drive motor is fixedly installed on the side of the mounting side frame.

[0009] Furthermore, the side of the welding support frame is also provided with: a bearing gear shaft, a linkage gear chain and a drive gear; the bearing gear shaft is rotatably disposed inside the welding support frame, the linkage gear chain is sleeved on the outside of the drive gear block and the bearing gear shaft, and the drive gear is fixedly disposed at one end of the bearing gear shaft.

[0010] Furthermore, the side of the positioning support frame is also provided with a limiting support frame and a limiting slot; the limiting support frame is fixedly set on the side of the positioning support frame, and the limiting slot is opened on the side of the limiting support frame.

[0011] Furthermore, the side of the adjusting tooth block is also provided with a locking opening and a limiting block; the locking opening is opened on the side of the adjusting tooth block, and the limiting block is fixedly set on the side of the adjusting tooth block.

[0012] Furthermore, the side of the assembly support cylinder is also provided with: a load-bearing side groove, an assembly side frame, and a telescopic support column; the load-bearing side groove is opened on the side of the assembly support cylinder, the assembly side frame is fixedly installed on the side of the assembly support cylinder, and the telescopic support column is fixedly installed on the side of the assembly side frame.

[0013] Furthermore, the protective support frame is also provided with: a cleaning motor, a rotating support block, a bearing toothed column, a drive toothed chain, and a cleaning brush column; the cleaning motor is fixedly installed on the side of the protective support frame, the rotating support block is fixedly installed on the side of the protective support frame, the bearing toothed column is rotatably installed inside the rotating support block, the drive toothed chain is sleeved on the outside of the toothed block where the bearing toothed column and the rotating shaft of the cleaning motor are located, and the cleaning brush column is fixedly sleeved on the outside of the bearing toothed column.

[0014] Furthermore, firstly, the entire device is moved to the side of the water conservancy pipeline to be welded by the driving support of the moving carrier. The hydraulic support on the adjusting frame is operated to make it cooperate with the adjusting support to push the carrier support frame up and down until the height of the welding support frame on the carrier support frame is flush with the axis of the pipeline.

[0015] Next, the welding support frame is fitted onto the side of the pipe to be welded. The welding support frame is stably attached to the pipe by the cooperation between the support frame and the support side seat. Then, the positioning support frame is adjusted, and the position of the adjusting tooth block is fixed by the limiting support frame and the limiting slot. The locking bolt is tightened so that it passes through the locking opening, and the adjusting tooth block is locked and meshed with the drive gear.

[0016] Then, the cleaning motor on the protective support frame is started. The cleaning motor drives the cleaning brush column to rotate through the drive gear chain. At the same time, the drive motor starts and drives two sets of drive gear shafts to rotate synchronously through the transmission gear column and the transmission gear chain. The drive gear shaft then drives the bearing gear shaft to rotate through the drive gear and the linkage gear chain. The bearing gear shaft drives the support frame to reciprocate through the drive gear and the adjusting gear block. Finally, the protective support frame supports the cleaning brush column to move along the circumference of the pipe and performs all-round friction cleaning of the pipe joint.

[0017] Next, after the joint is cleaned, adjust the telescopic support on the welding support to precisely push the welding device to the pipe joint; keep the drive support frame in reciprocating rotation, start the welding device, and make it perform automatic circumferential welding along the pipe joint as the drive support frame rotates to ensure that the weld bead is uniform and continuous.

[0018] Finally, after the welding operation is completed, the welding device is turned off, but the cleaning motor and drive support frame continue to run, allowing the cleaning brush column to move along the weld seam and automatically clean the welding slag. After the welding slag is cleaned, the mobile carrier support device is moved to the next position on the pipeline that needs to be welded for rapid and continuous welding operations. After the welding is completed and the device is idle, all motors are turned off, the locking bolts are loosened and the adjusting gear is removed, the hydraulic support is operated to lower the support frame, the welding tank is removed from the pipeline, and the mobile carrier is pushed to move the device to the next work point or storage location.

[0019] The automatic welding device and its method for use in water conservancy construction pipelines provided by this invention have the following beneficial effects.

[0020] The present invention discloses an automatic welding device and its method for use in water conservancy construction pipelines. Its structure includes multiple components such as a movable carrier, a bearing side seat, a welding support frame, a driving support frame, a welding base, and a protective support frame, achieving the following innovative effects:

[0021] The welding device moves as a whole by supporting the moving carrier. The adjusting frame, with the help of the hydraulic support and the adjusting support, achieves precise adjustment of the overall height of the frame. The supporting frame and the supporting side seat cooperate to provide stable positioning and support for the welding frame, so that the welding frame is stably set on the side of the pipe to be welded. The welding frame and the driving frame work together to combine the welding support and the protective frame into one unit, forming a reliable assembly support structure. The welding frame is fitted onto the outer edge of the pipe side through the welding groove. The positioning frame relies on the limiting frame and the limiting slot to perform combined assembly and limiting support for the adjusting gear block. The adjusting gear block is fixed and locked by the locking bolt and the locking hole, thereby ensuring effective transmission meshing between the adjusting gear block and the driving gear.

[0022] The drive motor drives the transmission gear chain to rotate through the transmission gear column, which in turn drives two sets of drive gear shafts to rotate synchronously. The drive gear shafts, with the help of the drive gear blocks and the linkage gear chain, drive the bearing gear shaft to rotate. The bearing gear shafts, through the meshing of the drive gear and the adjusting gear block, support the entire drive support frame to achieve controllable reciprocating rotation. This movement further drives the welding support and the protective support frame to rotate synchronously, causing the protective support frame to drive the cleaning brush column to move in a circular reciprocating motion along the outer wall of the pipe. At the same time, the cleaning motor drives the cleaning brush column to rotate through the drive gear chain, performing efficient friction cleaning on the joint area of ​​the pipe to be welded, ensuring a clean welding surface.

[0023] The welding support, in conjunction with the telescopic support column, stably positions the welding device in the pipe joint area. As the drive frame supports the welding device to reciprocate along a circular path on the side of the pipe, the welding device automatically performs welding operations at the pipe joint. After welding is completed, the drive frame continues to rotate and adjust, protecting the support frame and driving the cleaning brush column to reciprocate along the outer wall of the pipe in a circular motion. The cleaning brush column performs efficient friction on the part of the pipe to be welded and automatically removes the welding slag in the weld area. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0025] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0026] In the attached diagram:

[0027] Figure 1This diagram shows a structural schematic of the overall component assembly of an automatic welding apparatus according to an embodiment of the present invention.

[0028] Figure 2 A side view of the overall component assembly of the automatic welding device according to an embodiment of the present invention is shown;

[0029] Figure 3 A schematic diagram of the assembly and disassembly of the mobile carrier components according to an embodiment of the present invention is shown;

[0030] Figure 4 A schematic diagram of the assembly and disassembly of the integral component of the bearing side seat according to an embodiment of the present invention is shown;

[0031] Figure 5 This diagram illustrates the structural configuration of the welded support frame as an integral component, which is assembled and disassembled according to an embodiment of the present invention.

[0032] Figure 6 This diagram illustrates the assembly and disassembly of the drive support frame as an integral component according to an embodiment of the present invention.

[0033] Figure 7 A schematic diagram of the assembly and disassembly of the integral component of the welding support according to an embodiment of the present invention is shown;

[0034] Figure 8 A schematic diagram of the assembly and disassembly of the protective support frame as an integral component according to an embodiment of the present invention is shown.

[0035] List of reference numerals

[0036] 1. Mobile carrier;

[0037] 101. Adjustable frame; 102. Adjustable support groove; 103. Hydraulic support; 104. Bearing frame; 105. Adjustable support; 106. Guide support groove; 107. Adjustable bracket;

[0038] 2. Bearing side seat;

[0039] 201. Side frame mounting; 202. Drive motor; 203. Drive gear shaft; 204. Drive gear block; 205. Transmission gear column; 206. Transmission gear chain;

[0040] 3. Weld the support frame;

[0041] 301. Welding groove; 302. Bearing gear shaft; 303. Linkage gear chain; 304. Drive gear;

[0042] 4. Drive the support frame;

[0043] 401. Assembly side frame; 402. Rotation support groove; 403. Positioning support frame; 404. Locking bolt; 405. Limiting support frame; 406. Limiting slot; 407. Adjusting tooth block; 408. Locking opening; 409. Limiting block;

[0044] 5. Welded supports;

[0045] 501. Assembly support cylinder; 502. Bearing side groove; 503. Welding device; 504. Assembly side frame; 505. Telescopic support column;

[0046] 6. Protect the support frame;

[0047] 601. Clean the motor; 602. Rotate the support block; 603. Bearing toothed column; 604. Drive toothed chain; 605. Clean the brush column. Detailed Implementation

[0048] Example: Please refer to Figures 1 to 8 :

[0049] This invention proposes an automatic welding device for hydraulic construction pipelines and its usage method, comprising: a movable carrier 1, a bearing side seat 2, a welding support frame 3, a driving support frame 4, a welding support 5, and a protective support frame 6.

[0050] An adjustable frame 101 is fixedly mounted on the top of the movable carrier 1, and an adjustable bracket 107 is fixedly mounted on the top of the movable carrier 1. A bearing support frame 104 is sleeved on the outside of the adjustable frame 101, and an adjustable support 105 is fixedly mounted on the inside of the bearing support frame 104. A guide groove 106 is opened on the side of the bearing support frame 104. A bearing side seat 2 is fixedly mounted on the side of the bearing support frame 104. A drive gear shaft 203 is rotatably mounted at both ends of the bearing side seat 2. A drive gear block 204 is fixedly sleeved on the outside of the drive gear shaft 203. A transmission gear column 205 is rotatably mounted on the side of the bearing side seat 2. A transmission gear chain 206 is sleeved on the outside of the drive gear shaft 203. A welded support frame 3 is fixedly mounted on the side of the bearing side seat 2. The welding support frame 3 has a welding groove 301 on its side; the drive support frame 4 is rotatably mounted inside the welding groove 301, and an assembly side frame 401 is fixedly mounted on the side of the drive support frame 4. The assembly side frame 401 has a rotating support groove 402 on its side, and a positioning support frame 403 is fixedly mounted on the side of the drive support frame 4. The positioning support frame 403 has a locking bolt 404 on its side and an adjusting tooth block 407 on its side; the welding support 5 is fixedly mounted on the side of the assembly side frame 401, and an assembly support cylinder 501 is fixedly mounted inside the welding support 5. A welding device 503 is slidably mounted inside the assembly support cylinder 501; the protective support frame 6 is fixedly mounted on the side of the assembly side frame 401.

[0051] Example 1: As Figures 3 to 8As shown, the side of the assembly support cylinder 501 is also provided with: a bearing side groove 502, an assembly side frame 504, and a telescopic support column 505; the bearing side groove 502 is opened on the side of the assembly support cylinder 501, the assembly side frame 504 is fixedly installed on the side of the assembly support cylinder 501, and the telescopic support column 505 is fixedly installed on the side of the assembly side frame 504; the side of the protective support frame 6 is also provided with: a cleaning motor 601, a rotating support block 602, a bearing toothed column 603, a drive toothed chain 604, and a cleaning brush column 605; the cleaning motor 601 is fixedly installed on the side of the assembly support cylinder 501. The rotating support block 602 is fixedly installed on the side of the protective support frame 6. The bearing toothed column 603 is rotatably installed inside the rotating support block 602. The driving toothed chain 604 is sleeved on the outside of the toothed block where the bearing toothed column 603 and the rotating shaft of the cleaning motor 601 are located. The cleaning brush column 605 is fixedly sleeved on the outside of the bearing toothed column 603. The cleaning motor 601, in cooperation with the driving toothed chain 604, can drive the cleaning brush column 605 to rotate, so that the cleaning brush column 605 can perform friction cleaning on the pipe that needs to be welded.

[0052] Example 2: Based on Example 1, as follows Figures 2 to 8 As shown, the side of the adjustable frame 101 is also provided with: an adjusting support groove 102 and a hydraulic support 103; the adjusting support groove 102 is opened on the side of the adjustable frame 101, and the hydraulic support 103 is fixedly installed inside the adjusting support groove 102; the side of the bearing side seat 2 is also provided with: a mounting side frame 201 and a drive motor 202; the mounting side frame 201 is fixedly installed on the side of the bearing side seat 2, and the drive motor 202 is fixedly installed on the side of the mounting side frame 201; the side of the welded support frame 3 is also provided with: a bearing gear shaft 302, a linkage gear chain 303 and a drive gear 304; the bearing gear shaft 302 is rotatably installed inside the welded support frame 3, and the linkage gear chain 303 is sleeved on the drive gear block 204. 4. The drive gear 304 is fixedly mounted on one end of the bearing gear shaft 302 on the outside of the bearing gear shaft 302; the side of the positioning support frame 403 is also provided with: a limiting support frame 405 and a limiting slot 406; the limiting support frame 405 is fixedly mounted on the side of the positioning support frame 403, and the limiting slot 406 is opened on the side of the limiting support frame 405; the side of the adjusting gear block 407 is also provided with: a locking opening 408 and a limiting block 409; the locking opening 408 is opened on the side of the adjusting gear block 407, and the limiting block 409 is fixedly mounted on the side of the adjusting gear block 407; the limiting support can be used to assemble the adjusting gear block 407 by means of the limiting support frame 405 and the limiting slot 406.

[0053] The specific usage and function of this embodiment: In this invention, during use, the entire support device of the movable carrier 1 is moved. The adjustable frame 101, through the hydraulic support 103 and the adjusting support 105, supports the overall height of the bearing support frame 104 for height adjustment. The bearing support frame 104, in conjunction with the bearing side seat 2, positions and supports the welding support frame 3. The welding support frame 3, in conjunction with the driving support frame 4, assembles and supports the welding support 5 and the protective support frame 6. The welding support frame 3 is fitted onto the side of the pipe to be welded through the welding groove 301. The positioning support frame 403, through the limiting support frame 405 and the limiting slot 406, provides limiting support for the assembly of the adjusting tooth block 407. The positioning support frame 403, through the locking bolt 404 and the locking hole 408, assembles and locks the adjusting tooth block 407, so that the adjusting tooth block 407 and the driving gear 304 engage in transmission, driving the electric... The machine 202, in conjunction with the transmission gear column 205, drives the transmission gear chain 206 to rotate, causing the transmission gear chain 206 to drive two sets of drive gear shafts 203 to rotate synchronously. The drive gear shafts 203, through the drive gear block 204 and the linkage gear chain 303, drive the bearing gear shaft 302 to rotate. The bearing gear shaft 302, through the drive gear 304 and the adjusting gear block 407, supports the drive support frame 4 to rotate reciprocally. The drive support frame 4 supports the welding support 5 and the protective support frame 6 to rotate. The protective support frame 6 supports the cleaning brush column 605 to move reciprocally around the pipeline in a circular path. The cleaning motor 601, in conjunction with the drive gear chain 604, drives the cleaning brush column 605 to rotate, causing the cleaning brush column 605 to perform friction cleaning on the pipeline to be welded. The welding support 5, in conjunction with the telescopic support column 505, supports the welding device 503 set at the pipeline joint for stable automatic welding.

Claims

1. An automatic welding device for water conservancy construction pipelines, the structure of which includes the following main components: a movable carrier (1), a bearing side seat (2), a welding support frame (3), a driving support frame (4), a welding support (5), and a protective support frame (6). The movable carrier (1) is fixedly provided with an adjustable frame (101) on its top, and an adjustable bracket (107) is fixedly provided on its top. A load-bearing support frame (104) is sleeved on the outside of the adjustable frame (101), and an adjustable support (105) is fixedly provided on the inside of the load-bearing support frame (104). A guide groove (106) is provided on the side of the load-bearing support frame (104). The bearing side seat (2) is fixedly installed on the side of the bearing support frame (104). Drive gear shafts (203) are rotatably installed at both ends of the bearing side seat (2). Drive gear blocks (204) are fixedly sleeved on the outer side of the drive gear shafts (203). Transmission gear columns (205) are rotatably installed on the side of the bearing side seat (2), and transmission gear chains (206) are sleeved on the outer side of the drive gear shafts (203). The welding support frame (3) is fixedly installed on the side of the bearing side seat (2). A welding groove (301) is opened on the side of the welding support frame (3). The drive support frame (4) is rotatably installed inside the welding groove (301). A drive support frame (4) is fixedly installed on the side of the drive support frame (4). The assembly side frame (401) has a rotating support groove (402) on its side. A positioning support frame (403) is fixedly installed on the side of the drive support frame (4). A locking bolt (404) is installed on the side of the positioning support frame (403). An adjusting tooth block (407) is installed on the side of the positioning support frame (403). The welding support (5) is fixedly installed on the side of the assembly side frame (401). An assembly support cylinder (501) is fixedly installed on the inner side of the welding support (5). A welding device (503) is slidably installed on the inner side of the assembly support cylinder (501). The protective support frame (6) is fixedly installed on the side of the assembly side frame (401). The side of the adjustable frame (101) is also provided with: an adjustable support groove (102) and a hydraulic support (103); the adjustable support groove (102) is opened on the side of the adjustable frame (101), and the hydraulic support (103) is fixedly installed inside the adjustable support groove (102); The side of the bearing side seat (2) is also provided with: a mounting side frame (201) and a drive motor (202); the mounting side frame (201) is fixedly installed on the side of the bearing side seat (2), and the drive motor (202) is fixedly installed on the side of the mounting side frame (201); The side of the welded support frame (3) is also provided with: a bearing gear shaft (302), a linkage gear chain (303) and a drive gear (304); the bearing gear shaft (302) is rotatably disposed inside the welded support frame (3), the linkage gear chain (303) is sleeved on the outside of the drive gear block (204) and the bearing gear shaft (302), and the drive gear (304) is fixedly disposed at one end of the bearing gear shaft (302); The positioning support frame (403) is also provided with a limiting support frame (405) and a limiting slot (406) on its side; the limiting support frame (405) is fixedly set on the side of the positioning support frame (403), and the limiting slot (406) is opened on the side of the limiting support frame (405); The side of the adjusting tooth block (407) is also provided with: a locking opening (408) and a limiting block (409); the locking opening (408) is opened on the side of the adjusting tooth block (407), and the limiting block (409) is fixedly set on the side of the adjusting tooth block (407); The side of the assembly support cylinder (501) is also provided with: a bearing side groove (502), an assembly side frame (504), and a telescopic support column (505); the bearing side groove (502) is opened on the side of the assembly support cylinder (501), the assembly side frame (504) is fixedly installed on the side of the assembly support cylinder (501), and the telescopic support column (505) is fixedly installed on the side of the assembly side frame (504); The protective support frame (6) is also provided with the following on its side: a cleaning motor (601), a rotating support block (602), a bearing toothed column (603), a drive toothed chain (604), and a cleaning brush column (605); the cleaning motor (601) is fixedly installed on the side of the protective support frame (6), the rotating support block (602) is fixedly installed on the side of the protective support frame (6), the bearing toothed column (603) is rotatably installed inside the rotating support block (602), the drive toothed chain (604) is sleeved on the outside of the toothed block where the bearing toothed column (603) and the rotating shaft of the cleaning motor (601) are located, and the cleaning brush column (605) is fixedly sleeved on the outside of the bearing toothed column (603).

2. The method of using the automatic welding device for water conservancy construction pipelines according to claim 1, characterized in that: The usage steps are as follows: Step 1: Move the entire device to the side of the water pipe to be welded by the drive bearing of the moving carrier (1), operate the hydraulic support (103) on the adjusting frame (101) to make it work with the adjusting support (105) to push the bearing support frame (104) up and down until the height of the welding support frame (3) carried by the bearing support frame (104) is flush with the axis of the pipe. Step 2: Place the welding groove (301) of the welding support frame (3) onto the side of the pipe to be welded. Through the cooperation of the bearing support frame (104) and the bearing side seat (2), ensure that the welding support frame (3) is stably attached to the pipe. Then adjust the positioning support frame (403), use the limiting support frame (405) and the limiting slot (406) to fix the position of the adjusting tooth block (407), tighten the locking bolt (404) so ​​that it passes through the locking opening (408), lock the adjusting tooth block (407) and mesh with the drive gear (304); Step 3: Start the cleaning motor (601) on the protective support frame (6). The cleaning motor (601) drives the cleaning brush column (605) to rotate through the drive gear chain (604). At the same time, the drive motor (202) starts and drives the two sets of drive gear shafts (203) to rotate synchronously through the transmission gear column (205) and the transmission gear chain (206). The drive gear shaft (203) then drives the bearing gear shaft (302) to rotate through the drive gear block (204) and the linkage gear chain (303). The bearing gear shaft (302) drives the support frame (4) to rotate back and forth through the drive gear (304) and the adjusting gear block (407). Finally, the protective support frame (6) supports the cleaning brush column (605) to move along the circumference of the pipe and perform all-round friction cleaning of the pipe joint. Step 4: After the joint cleaning is completed, adjust the telescopic support (505) on the welding support (5) and push the welding device (503) precisely to the pipe joint. Keep the drive support frame (4) in a reciprocating rotation state, start the welding device (503) and make it perform circumferential automatic welding along the pipe joint with the rotation of the drive support frame (4) to ensure that the weld bead is uniform and continuous. Step 5: After the welding operation is completed, turn off the welding device (503), continue to keep the cleaning motor (601) and drive support frame (4) running, and let the cleaning brush column (605) move along the weld after welding to automatically clean the welding slag; after the welding slag is cleaned, move the entire support device of the moving carrier (1) to the side of the pipe to be welded below, and perform a fast and continuous welding operation. After the welding is completed and the device is idle, turn off all motors, loosen the locking bolt (404) and remove the adjusting tooth block (407), operate the hydraulic support (103) to lower the support frame (104), and move the support device of the moving carrier (1) to the storage position.

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