Pipe welding installation auxiliary device based on arc frame splicing and installation method thereof

Abstract

The application discloses a pipeline welding installation auxiliary device based on arc frame splicing and a pipeline welding installation method, relates to the technical field of wallboard auxiliary positioning, and comprises a wide-angle arc frame, a stable fixing mechanism arranged on the wide-angle arc frame, and an axis movement assembly arranged on the wide-angle arc frame; one side of the wide-angle arc frame is provided with a split arc frame, telescopic connecting assemblies are arranged at both ends of an opening of the wide-angle arc frame, a welding base frame is arranged at one end of the split arc frame away from the wide-angle arc frame, a stable arc frame is arranged on the welding base frame, a stable mechanism is arranged on the stable arc frame, a guiding traction assembly is arranged on the wide-angle arc frame, and a welding mechanism is arranged on the welding base frame. Through the ingenious structural design and the precise clamping, guiding, welding, supporting and moving mechanisms, the stability, adaptability and automation degree of the pipeline welding equipment are improved, the welding efficiency and quality can be effectively improved, the demand for manual intervention is reduced, and the pipeline welding installation auxiliary device has wide engineering application value.

Description

Technical Field

[0001] This invention relates to the field of wall panel auxiliary positioning technology, and in particular to a pipe welding installation auxiliary device and its installation method based on arc frame splicing. Background Technology

[0002] Pipeline welding is an indispensable and crucial process in modern industrial manufacturing and infrastructure construction, widely used in fields such as petroleum, natural gas, chemical, power, and marine engineering. With the continuous growth of industrial demands, pipeline welding technology has evolved from manual welding to automated welding to improve welding quality, operational efficiency, and safety.

[0003] Currently, there are many shortcomings in the field of auxiliary devices for pipeline welding and installation. On the one hand, some traditional devices are too simple in structure, only providing basic pipeline support and fixation functions. When faced with complex pipeline routes, different pipe diameters, and varying site environments, they struggle to achieve rapid and accurate positioning and installation. For example, some small pipe clamps cannot meet the welding needs of large-diameter pipes, while large fixed supports are difficult to maneuver in confined spaces, severely restricting welding efficiency. On the other hand, the automation and intelligence of existing auxiliary devices need improvement. In most cases, pipeline welding and installation still rely on manual operation and visual judgment, lacking effective technical means for real-time monitoring and automatic adjustment of issues such as precise weld alignment and thermal deformation control during welding. This not only leads to poor weld quality stability, making weld defects and pipe misalignment more likely, but also increases the cost of subsequent inspection and maintenance.

[0004] How to solve the above-mentioned technical problems is the challenge facing this invention. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a rationally designed, safe, and reliable auxiliary device for pipe welding and installation based on arc frame splicing, as well as its installation method.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a pipe welding and installation auxiliary device based on arc frame splicing, including a wide-angle arc frame, a stabilizing and fixing mechanism for stabilizing and fixing the wide-angle arc frame on the pipe, an axial motion component for moving the wide-angle arc frame along the axial direction of the pipe, and a circumferential rotation component that cooperates with the axial motion component and is used to drive the wide-angle arc frame to rotate along the circumferential direction of the pipe;

[0007] A splicing arc frame is provided on one side of the wide-angle arc frame to cooperate with the wide-angle arc frame. Telescopic connecting components connected to the splicing arc frame are provided at both ends of the opening of the wide-angle arc frame. A welding base frame is provided on the splicing arc frame at the end away from the wide-angle arc frame. A stabilizing arc frame is provided on the welding base frame, and a stabilizing mechanism cooperating with the stabilizing fixing mechanism is provided on the stabilizing arc frame. A guide traction component cooperating with the telescopic connecting component is provided on the wide-angle arc frame. A welding mechanism is provided on the welding base frame.

[0008] During welding, the stabilizing arc frame and the wide-angle arc frame are located on both sides of the weld.

[0009] Furthermore, the stabilizing and fixing mechanism includes an axial base frame disposed on the wide-angle arc frame. Two sets of stabilizing base frames are disposed on the wide-angle arc frame, and the two sets of stabilizing base frames are symmetrically disposed on both sides of the axial base frame. Each set of stabilizing base frames includes a plurality of stabilizing supports disposed along the length direction of the axial base frame, and a stabilizing base is disposed on the stabilizing support.

[0010] A flexible clamping assembly is provided on the stable base, and a stable top support assembly that cooperates with the flexible clamping assembly is provided on the stable base. A circumferential rotation assembly is provided on the stable base and cooperates with the stable top support assembly. A ring pressure airbag assembly that cooperates with the pipeline is provided on the wide-angle arc frame.

[0011] Furthermore, the axial motion assembly includes a plurality of radial telescopic cylinders disposed on the axial base frame, and a traveling bracket is disposed at the moving end of the radial telescopic cylinder, and a track traveling unit is disposed on the traveling bracket;

[0012] The ring-shaped airbag assembly includes ring-shaped airbag units respectively disposed at both ends of the wide-angle arc frame, and protective ring plate units that cooperate with the ring-shaped airbag units are disposed at both ends of the wide-angle arc frame. An inflation closed-loop control unit that cooperates with the ring-shaped airbag units is disposed on the wide-angle arc frame.

[0013] The ring-shaped airbag unit includes several sets of airbags arranged along the circumferential direction of the wide-angle ring frame. Each airbag is equipped with an emergency pressure relief valve, and the wide-angle ring frame is equipped with an inflation hose connected to the airbag. The inflation hose is equipped with a solenoid valve, and the wide-angle ring frame is equipped with an inflation pump connected to the inflation hose.

[0014] The protective ring plate unit includes a number of protective telescopic rods located at one section of the wide-angle arc frame, and the number of protective telescopic rods are connected to the same protective fan plate.

[0015] Furthermore, the flexible clamping assembly includes flexible supports symmetrically arranged on the stable base, a flexible roller shaft is provided on the flexible support, a flexible motor that cooperates with the flexible roller shaft is provided on the flexible support, a hanging rod is provided on the flexible roller shaft, a flexible cloth is provided between the two flexible supports, and a stabilizing roller shaft that cooperates with the flexible cloth is provided on the flexible support.

[0016] The stabilizing support assembly includes two sets of supporting hydraulic rods disposed on the stabilizing base. The two sets of supporting hydraulic rods are connected to the same supporting arc seat. A guide column is disposed at the center of the stabilizing base, and a guide cylinder that cooperates with the guide column is disposed on the supporting arc seat.

[0017] The circumferential rotation assembly includes a circumferential telescopic rod disposed in the guide column, a circumferential rotating frame disposed at the moving end of the circumferential telescopic rod, a circumferential rotating wheel disposed on the circumferential rotating frame, and a drive unit that cooperates with the circumferential rotating wheel disposed on the circumferential rotating frame; a circumferential through groove that cooperates with the circumferential rotating frame that cooperates with the guide cylinder is opened on the top support arc seat; during rotation drive, the circumferential rotating wheel contacts the pipe through the circumferential pipe groove.

[0018] Furthermore, the telescopic connection assembly includes connecting bases respectively disposed on both sides of the opening of the wide-angle arc frame. Each connecting base has a connecting groove, and a connecting screw is disposed within the connecting groove. A drive motor cooperating with the connecting screw is disposed on the wide-angle arc frame. A sliding connecting seat cooperating with the connecting screw is disposed in the connecting groove, and a connecting plate connecting to the assembled arc frame is disposed on the sliding connecting seat. A connecting threaded rod cooperating with the assembled arc frame is disposed on the connecting plate.

[0019] At the end of the wide-angle arc frame away from the splicing arc frame, a docking arc frame is provided, which is connected to the splicing arc frame. The docking arc frame is provided with a plurality of docking locking cylinders. The splicing arc frame is provided with a docking rod that cooperates with the docking locking cylinder. The docking locking cylinder is provided with a locking screw that cooperates with the docking rod.

[0020] The wide-angle arc frame is provided with a locking arc frame that cooperates with the splicing arc frame. The locking arc frame is provided with a plurality of locking telescopic rods. The splicing arc frame is provided with a locking alignment cylinder that cooperates with the locking telescopic rods.

[0021] Furthermore, the stabilizing arc frame includes a stabilizing arc plate connected to the welding base frame, and the stabilizing arc plate is provided with a traction frame that cooperates with the guide traction component. The stabilizing arc plate is provided with a plurality of stabilizing connecting frames, and a fixed arc plate is provided at one end of the stabilizing connecting frame away from the welding base frame. A plurality of stabilizing fan frames are provided on the stabilizing connecting frame.

[0022] The stabilizing frame is equipped with a stabilizing mechanism, and the structure of the stabilizing mechanism is basically the same as that of the stabilizing fixing mechanism.

[0023] Furthermore, the guiding traction assembly includes a traction base plate disposed at one end of the wide-angle arc frame away from the splicing arc frame, a traction base frame disposed on the traction base plate, a traction roller shaft disposed on the traction base frame, a traction winch disposed on the traction roller shaft, a traction motor cooperating with the traction roller shaft disposed on the traction base frame, and a traction rope disposed on the traction winch.

[0024] The wide-angle arc frame is provided with several sets of guide frames, and the guide frames are provided with guide rollers that cooperate with the traction hinge rope. The traction hinge rope is connected to the stable arc frame via the guide rollers.

[0025] Furthermore, the welding base frame includes a welding arc frame, on which a stable triangular frame is provided; the welding arc frame is provided with a welding base platform that cooperates with the welding mechanism;

[0026] The welding mechanism includes a welding assembly for completing the welding work. A gas cylinder support is provided on the wide-angle arc frame and / or the spliced ​​arc frame. A welding shielding gas supply assembly that cooperates with the welding assembly is provided on the gas cylinder support. A welding torch adjustment assembly for precisely adjusting the position of the welding torch is provided on the welding support. A weld seam tracking assembly is provided on the welding support. An electrical control system is provided on the welding support.

[0027] The installation method for pipe welding installation auxiliary devices includes the following steps:

[0028] S1: Install a wide-angle arc frame on the outer wall of the pipe to be welded. Place the wide-angle arc frame on the outside of the pipe and fix it initially with a stabilizing and fixing mechanism. Then, use the axis motion component to drive the wide-angle arc frame to move along the pipe axis to the welding start position. Adjust the wide-angle arc frame to a suitable welding angle with the circumferential rotation component. Finally, use the stabilizing and fixing mechanism again for final fixing.

[0029] S2: Connect the spliced ​​arc frame with the wide-angle arc frame, and precisely adjust the position and secure the connection through the telescopic connection component and the guide traction component to form a complete ring structure;

[0030] S3: Install the welding base frame on the side of the spliced ​​arc frame away from the wide-angle arc frame, and adjust and stabilize the arc frame to the welding position;

[0031] S4: Start the welding mechanism to weld the pipe weld, and achieve full circumferential automatic welding through the cooperation of the axial motion component and the circumferential rotation component during the welding process;

[0032] S5: After welding is completed, stop the welding mechanism, adjust the axis movement component to move the wide-angle arc frame away from the weld area, and release the stabilizing and fixing mechanism to disengage the wide-angle arc frame from the pipe.

[0033] S6: Disassemble the splicing arc frame and welding base frame, and remove the equipment.

[0034] In step S1, when the initial or final fixation is performed by the stabilizing and fixing mechanism, the air pump inflates the ring pressure airbag unit to make the airbag fit against the outer wall of the pipe, while the flexible clamping component and the stabilizing top support component provide flexible constraint and stable support for the pipe.

[0035] The combination design of the wide-angle arc frame and the spliced ​​arc frame in this invention can adapt to pipes of different diameters and lengths. The semi-circular structure of the wide-angle arc frame provides a wider support surface, while the flexible connection method of the spliced ​​arc frame allows the device to be adjusted according to the specific dimensions of the pipe, ensuring stable support and fixation in various pipe welding scenarios.

[0036] The stabilizing and fixing mechanism of this invention is equipped with a flexible clamping assembly and a stabilizing support assembly. Through the unfolding of the flexible fabric and the movement of the support arc seat, it achieves flexible constraint and stable support for the pipeline. Combined with the ring pressure airbag assembly, it effectively prevents pipeline displacement and vibration during welding, improving welding quality. The coordinated work of the axial motion assembly and the circumferential rotation assembly allows the device to move and adjust precisely along the pipeline's axis and circumference. The tracked walking unit provides stable axial motion, while the circumferential wheels ensure that the wide-angle arc frame can accurately align with the welding angle, achieving fully circumferential automatic welding.

[0037] The closed-loop inflation control unit and emergency pressure relief valve in this invention ensure that the ring pressure airbag unit can respond quickly in abnormal situations, avoiding potential risks. Furthermore, the protective ring plate unit effectively prevents sparks or other harmful substances generated during welding from damaging the equipment, further enhancing safety. The traction winch and guide roller system ensures that welding operations can be completed smoothly even in confined spaces, guaranteeing the safety of operators.

[0038] This invention adopts a modular design concept, with components such as the modular arc frame, telescopic connecting components, and stabilizing arc frame all supporting rapid assembly and disassembly. This not only simplifies the on-site assembly process but also facilitates transportation and maintenance, significantly shortening construction preparation time and improving the overall project execution efficiency. The design of the docking locking cylinder and locking screw makes the connection between the modular arc frame and the wide-angle arc frame more stable, while also being easy to disassemble and reuse.

[0039] The guiding traction assembly in this invention, through a traction winch and guide roller system, ensures a tight fit between the splicing arc frame and the wide-angle arc frame, reducing manual adjustment time and improving the assembly efficiency of the entire system. The stable triangular frame and welding platform design on the welding base allow the welding mechanism to operate stably at any angle without frequent equipment position adjustments, further improving work efficiency. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective;

[0041] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0042] Figure 3 This is an exploded view of the cooperation between the wide-angle arc frame, the locking arc frame, and the docking arc frame of the present invention;

[0043] Figure 4 This is a partial schematic diagram of the cooperation between the wide-angle arc frame and the guide traction assembly of the present invention;

[0044] Figure 5 This is a schematic diagram of the cooperation between the wide-angle arc frame and the stable fixing mechanism of the present invention;

[0045] Figure 6 This is a partial schematic diagram of the cooperation between the wide-angle arc frame and the stable fixing mechanism of the present invention;

[0046] Figure 7 This is a schematic diagram illustrating the cooperation between the flexible fabric, the stable support assembly, and the circumferential rotation assembly of the present invention;

[0047] Figure 8 This is a schematic diagram illustrating the cooperation between the telescopic connection component, the splicing arc frame, and the welding base frame of the present invention.

[0048] The attached diagrams are labeled as follows: 110, wide-angle arc frame; 120, assembled arc frame; 130, welded base frame; 131, welded arc frame; 132, welded base platform; 200, stabilizing and fixing mechanism; 210, axis base frame; 220, stabilizing base frame; 221, stabilizing support; 222, stabilizing base; 230, ring pressure airbag assembly; 231, airbag; 240, protective ring plate unit; 241, protective telescopic rod; 242, protective fan plate; 250, flexible clamping assembly; 251, flexible support; 252, flexible roller; 253, flexible cloth; 254, stabilizing roller; 260, stabilizing top support assembly; 261, top support hydraulic rod; 262, top support arc seat; 263, guide column; 264, guide cylinder; 270, circumferential rotation assembly; 271, circumferential telescopic rod; 272, circumferential rotating frame; 273, circumferential rotating wheel. 300. Axial motion assembly; 310. Radial telescopic cylinder; 320. Traveling bracket; 330. Tracked traveling unit; 400. Telescopic connection assembly; 410. Connecting base; 420. Connecting base groove; 430. Connecting screw; 440. Drive motor; 450. Connecting plate; 460. Connecting screw; 470. Docking arc frame; 471. Docking locking cylinder; 472. Docking rod; 480. Locking arc frame; 481. Locking telescopic rod; 482. Locking alignment cylinder; 490. Stabilizing arc frame; 491. Stabilizing arc plate; 492. Traction frame; 493. Stabilizing connecting frame; 500. Guide traction assembly; 510. Traction base plate; 520. Traction base frame; 530. Traction roller; 540. Traction winch; 550. Traction motor; 560. Traction rope; 570. Guide guide frame; 580. Guide roller. Detailed Implementation

[0049] See Figures 1 to 8 As shown, a pipe welding installation auxiliary device based on arc frame splicing includes a wide-angle arc frame 110, a stabilizing and fixing mechanism 200 for stabilizing and fixing the wide-angle arc frame 110 on the pipe, an axial motion component 300 for moving the wide-angle arc frame 110 along the pipe axis, and a circumferential rotation component 270 for cooperating with the axial motion component and for driving the wide-angle arc frame 110 to rotate along the pipe circumferential direction.

[0050] A splicing arc frame 120 is provided on one side of the wide-angle arc frame 110 to cooperate with the wide-angle arc frame 110. Telescopic connecting components 400 connected to the splicing arc frame 120 are provided at both ends of the opening of the wide-angle arc frame 110. A welding base frame 130 is provided on the splicing arc frame 120 at one end away from the wide-angle arc frame 110. A stabilizing arc frame 490 is provided on the welding base frame 130, and a stabilizing mechanism 600 cooperating with the stabilizing fixing mechanism 200 is provided on the stabilizing arc frame 490. A guide traction component 500 cooperating with the telescopic connecting component 400 is provided on the wide-angle arc frame 110. A welding mechanism is provided on the welding base frame 130.

[0051] During welding, the stabilizing arc frame 490 and the wide-angle arc frame 110 are located on both sides of the weld.

[0052] Furthermore, the stabilizing and fixing mechanism 200 includes an axial base frame 210 disposed on the wide-angle arc frame 110, and two sets of stabilizing base frames 220 are disposed on the wide-angle arc frame 110, with the two sets of stabilizing base frames 220 symmetrically arranged on both sides of the axial base frame 210.

[0053] A set of the stabilizing base frame 220 includes a plurality of stabilizing supports 221 arranged along the length direction of the axial base frame 210, and a stabilizing base 222 is provided on the stabilizing support 221;

[0054] A flexible clamping assembly 250 is provided on the stable base 222, and a stable top support assembly 260 that cooperates with the flexible clamping assembly 250 is provided on the stable base 222. The circumferential rotation assembly 270 is provided on the stable base 222 and cooperates with the stable top support assembly 260. A ring pressure airbag assembly 230 that cooperates with the pipeline is provided on the wide-angle arc frame 110.

[0055] Furthermore, the axis motion assembly 300 includes a plurality of radial telescopic cylinders 310 disposed on the axis base frame 210, and a walking bracket 320 is disposed at the moving end of the radial telescopic cylinder 310, and a track walking unit 330 is disposed on the walking bracket 320.

[0056] The ring pressure airbag assembly 230 includes ring pressure airbag units respectively disposed at both ends of the wide-angle arc frame 110, and protective ring plate units 240 that cooperate with the ring pressure airbag units are disposed at both ends of the wide-angle arc frame 110. An inflation closed-loop control unit that cooperates with the ring pressure airbag units is disposed on the wide-angle arc frame 110.

[0057] The ring-shaped airbag unit includes several sets of airbags 231 arranged along the circumferential direction of the wide-angle ring frame. Each airbag 231 is equipped with an emergency pressure relief valve, and the wide-angle arc frame 110 is equipped with an inflation hose connected to the airbag 231. The inflation hose is equipped with a solenoid valve, and the wide-angle ring frame is equipped with an inflation pump connected to the inflation hose.

[0058] The protective ring plate unit 240 includes a plurality of protective telescopic rods 241 disposed at a section of the wide-angle arc frame 110, and the plurality of protective telescopic rods 241 are connected together to the same protective fan plate 242.

[0059] Specifically, the tracked walking unit 330 is basically the same as the tracked structure on the market, and will not be elaborated on further in this article.

[0060] Preferably, the wide-angle arc frame 110 is provided with a control chip that cooperates with the ring pressure airbag unit and the protective ring plate unit 240.

[0061] Preferably, the structure of the inflation closed-loop control unit is consistent with the structure of existing inflation control.

[0062] Furthermore, the flexible clamping assembly 250 includes flexible supports 251 symmetrically arranged on the stable base 222, a flexible roller 252 is provided on the flexible support 251, a flexible motor that cooperates with the flexible roller 252 is provided on the flexible support 251, a hanging rod is provided on the flexible roller 252, a flexible cloth 253 is provided between the two flexible supports 251, and a stabilizing roller 254 that cooperates with the flexible cloth 253 is provided on the flexible support 251.

[0063] The stabilizing support assembly 260 includes two sets of supporting hydraulic rods 261 disposed on the stabilizing base 222. The two sets of supporting hydraulic rods 261 are connected to the same supporting arc seat 262. A guide column 263 is disposed at the center of the stabilizing base 222. A guide cylinder 264 that cooperates with the guide column 263 is disposed on the supporting arc seat 262.

[0064] The circumferential rotation assembly 270 includes a circumferential telescopic rod 271 disposed in the guide column 263, a circumferential rotating frame 272 disposed at the moving end of the circumferential telescopic rod 271, a circumferential rotating wheel 273 disposed on the circumferential rotating frame 272, and a drive unit that cooperates with the circumferential rotating wheel 273 disposed on the circumferential rotating frame 273; the top support arc seat 262 is provided with a circumferential through groove that cooperates with the circumferential rotating frame 272 that cooperates with the guide cylinder 264; during rotation drive, the circumferential rotating wheel 273 contacts the pipe through the circumferential pipe groove.

[0065] Furthermore, the telescopic connection assembly 400 includes connecting bases 410 respectively disposed on both sides of the opening of the wide-angle arc frame 110. Each connecting base 410 has a connecting groove 420, in which a connecting screw 430 is disposed. The wide-angle arc frame 110 is provided with a drive motor 440 that cooperates with the connecting screw 430. A sliding connecting seat 460 that cooperates with the connecting screw 430 is disposed in the connecting groove 420, and the sliding connecting seat 460 is provided with a connecting plate 450 that connects to the assembled arc frame 120. The connecting plate 450 is provided with a connecting threaded rod that cooperates with the assembled arc frame 120.

[0066] At the end of the wide-angle arc frame 110 away from the splicing arc frame 120, a docking arc frame 470 is provided, which is connected to the splicing arc frame 120. The docking arc frame is provided with a plurality of docking locking cylinders 471. The splicing arc frame 120 is provided with a docking rod 472 that cooperates with the docking locking cylinder 471. The docking locking cylinder 471 is provided with a locking screw that cooperates with the docking rod 472.

[0067] The wide-angle arc frame 110 is provided with a locking arc frame 480 that cooperates with the splicing arc frame 120. The locking arc frame 480 is provided with a plurality of locking telescopic rods 481. The splicing arc frame 120 is provided with a locking alignment cylinder 482 that cooperates with the locking telescopic rods 481.

[0068] Furthermore, the stabilizing arc frame 490 includes a stabilizing arc plate 491 connected to the welding base frame 130, and the stabilizing arc plate 491 is provided with a traction frame 492 that cooperates with the guide traction assembly 500. The stabilizing arc plate 491 is provided with a plurality of stabilizing connecting frames 493, and a fixed arc plate is provided at one end of the stabilizing connecting frame 493 away from the welding base frame 130. The stabilizing connecting frame 493 is provided with a plurality of stabilizing fan frames.

[0069] The stabilizing frame 493 is provided with a stabilizing mechanism 600, and the structure of the stabilizing mechanism 600 is basically the same as that of the stabilizing fixing mechanism 200.

[0070] Furthermore, the guide traction assembly 500 includes a traction base plate 510 disposed at one end of the wide-angle arc frame 110 away from the splicing arc frame 120, a traction base frame 520 disposed on the traction base plate 510, a traction roller shaft 530 disposed on the traction roller shaft 530, a traction winch 540 disposed on the traction roller shaft 530, a traction motor 550 cooperating with the traction roller shaft 530 disposed on the traction base frame 520, and a traction rope 560 disposed on the traction winch 540.

[0071] The wide-angle arc frame 110 is provided with several sets of guide frames 570, and the guide frames 570 are provided with guide rollers 580 that cooperate with the traction hinge rope. The traction hinge rope is connected to the stable arc frame 490 via the guide rollers 580.

[0072] The welding base frame 130 includes a welding arc frame 131, on which a stable triangular frame is provided; the welding arc frame is provided with a welding base 132 that cooperates with the welding mechanism;

[0073] The welding mechanism includes a welding assembly for completing the welding work. A gas cylinder support is provided on the wide-angle arc frame 110 and / or the spliced ​​arc frame 120. A welding shielding gas supply assembly that cooperates with the welding assembly is provided on the gas cylinder support. A welding torch adjustment assembly for precisely adjusting the position of the welding torch is provided on the welding support. A weld seam tracking assembly is provided on the welding support. An electrical control system is provided on the welding support.

[0074] Specifically, the structures of the aforementioned welding components, welding shielding gas supply components, welding torch adjustment components, weld seam tracking components, and electrical control systems are basically the same as those of existing welding structures, and will not be elaborated upon further in this article.

[0075] The installation method for pipe welding installation auxiliary devices includes the following steps:

[0076] S1: Install a wide-angle arc frame 110 on the outer wall of the pipe to be welded. Place the wide-angle arc frame 110 on the outside of the pipe and fix it initially with the stabilizing and fixing mechanism 200. Then, use the axis motion component 300 to drive the wide-angle arc frame 110 to move along the pipe axis to the welding start position. Adjust the wide-angle arc frame 110 to a suitable welding angle with the circumferential rotation component 270. Finally, use the stabilizing and fixing mechanism 200 again for final fixing.

[0077] S2: Connect the splicing arc frame 120 with the wide-angle arc frame 110, and precisely adjust the position and securely connect them through the telescopic connection component 400 and the guide traction component 500 to form a complete ring structure;

[0078] S3: Install the welding base frame 130 on the side of the splicing arc frame 120 away from the wide-angle arc frame 110, and adjust the stable arc frame 490 to the welding position;

[0079] S4: Start the welding mechanism to weld the pipe weld. During the welding process, the axial motion component 300 and the circumferential rotation component 270 cooperate to achieve fully circumferential automatic welding. The welding torch adjustment component adjusts the position of the welding torch, the welding shielding gas supply component provides shielding gas, and the electrical control system controls the welding component to start welding. During the welding process, the weld tracking component monitors and provides feedback on the weld position deviation in real time. The electrical control system adjusts the position and posture of the welding torch. At the same time, according to the welding progress and pipe deformation, the control chip adjusts the inflation volume of the ring pressure airbag unit and the support position of the stabilizing support component 260 to ensure stable welding quality.

[0080] S5: After welding is completed, stop the welding mechanism, adjust the axis movement component 300 to move the wide-angle arc frame 110 away from the weld area, and release the stabilizing and fixing mechanism 200 to disengage the wide-angle arc frame 110 from the pipe.

[0081] S6: Disassemble the splicing arc frame 120 and welding base frame 130, and remove the equipment.

[0082] In step S1, when the stabilizing and fixing mechanism 200 performs initial or final fixing, the air pump inflates the ring pressure airbag unit to make the airbag 231 fit against the outer wall of the pipe, while the flexible clamping component 250 and the stabilizing top support component 260 provide flexible constraint and stable support for the pipe.

[0083] In step S1, the inflation volume of the air pump and the opening degree of the solenoid valve are precisely controlled by the control chip, so that the inflation degree of the airbag 231 of the ring pressure airbag unit is adapted to the pipe diameter. At the same time, the flexible motor of the flexible clamping component 250 drives the flexible roller 252 to rotate, causing the flexible cloth 253 to unfold and fit against the outer wall of the pipe. The hanging rod helps to fix the flexible cloth 253, forming a flexible constraint on the pipe. The top support hydraulic rod 261 of the stabilizing top support component 260 pushes the top support arc seat 262 to move along the guide column 263. The inner arc surface of the top support arc seat 262 contacts the outer wall of the pipe, initially establishing stable support.

[0084] In step S1, the drive motor 440 of the axial motion component 300 controls the extension and retraction of the moving end of the radial telescopic cylinder 310, thereby adjusting the position of the walking support 320. The track walking unit 330 moves along the axial direction on the outer surface of the pipe, driving the entire device to move precisely along the pipe axis to the welding start position. The drive unit of the circumferential rotation component 270 drives the circumferential rotating wheel 273 to rotate. The circumferential rotating wheel 273 contacts the pipe through the circumferential pipe groove, overcomes the resistance of the stabilizing support component 260, and drives the wide-angle arc frame 110 to rotate around the pipe circumferentially, adjusting to a suitable welding angle. During the process, the guide column 263 and the guide cylinder 264 cooperate to ensure smooth movement.

[0085] In step S2, the connecting plate 450 on one side of the splicing arc frame 120 is aligned with the connecting base 410 at the open end of the wide-angle arc frame 110. The connecting screw is inserted and initially tightened to establish a preliminary connection between the splicing arc frame 120 and the wide-angle arc frame 110. The drive motor 440 on the wide-angle arc frame 110 drives the connecting screw 430 to rotate, pushing the connecting base 410 to move in the connecting base groove 420, further pulling or pushing the splicing arc frame 120 closer together, and precisely adjusting the relative positions of the two to ensure that the splicing arc frame 120 and the wide-angle arc frame 110 fit tightly together. After the docking locking cylinder 471 and the docking rod 472 are aligned, the locking screw is tightened to complete the stable connection. At the same time, the locking telescopic rod 481 on the locking arc frame 480 cooperates with the locking alignment cylinder 482 to further reinforce the connection.

[0086] In step S4, the preparation of the welding mechanism on the welding base frame 130 includes: the welding torch adjustment assembly adjusting the welding torch to the initial position of the weld; the gas cylinder bracket of the welding shielding gas supply assembly fixing the shielding gas cylinder; the gas path connecting to the welding assembly; the weld tracking assembly activating to detect the weld trajectory and feeding back to the electrical control system; the electrical control system controlling the welding assembly to start and ignite the arc to begin the welding process according to the preset welding parameters and real-time feedback information; at the same time, the stabilizing and fixing mechanism 200 and the stabilizing mechanism 600 continuously operate to ensure the stability of the pipeline and device during the welding process.

[0087] In step S4, during the welding process, the weld seam tracking component monitors the weld seam position deviation in real time, and the electrical control system adjusts the position and posture of the welding torch in a timely manner to ensure that the welding torch always travels accurately along the weld seam. According to the welding progress and the heat deformation of the pipeline, the inflation volume of the ring pressure airbag unit is adjusted in a timely manner by the control chip to maintain a stable clamping force on the pipeline. At the same time, the top support hydraulic rod 261 of the stable top support component 260 finely adjusts the position of the top support arc seat 262 to adapt to the slight deformation of the pipeline and ensure stable welding quality.

[0088] In steps S4-S6, the welding reaches its end point, the welding assembly stops working, the welding torch automatically returns to a safe position, and the gas supply to the welding shielding gas assembly is shut off. The release of the stabilizing and fixing mechanism 200 and the stabilizing mechanism 600 includes: the air pump reverses to extract gas from the airbag 231, the airbag 231 contracts, the flexible clamping assembly 250 and the stabilizing support assembly 260 release the constraint on the pipeline, the locking screw, the locking telescopic rod 481 and other components are reset, and the connection between the splicing arc frame 120 and the wide-angle arc frame 110 is released. Finally, the device is moved in the opposite direction along the pipeline axis to a suitable position, the entire auxiliary device is removed, and the pipeline welding and installation operation is completed.

[0089] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A pipe welding and installation auxiliary device based on arc frame splicing, characterized in that: The system includes a wide-angle arc frame (110), which is provided with a stabilizing and fixing mechanism (200) for stably fixing the wide-angle arc frame (110) to the pipeline. The wide-angle arc frame (110) is provided with an axial motion assembly (300) for moving the wide-angle arc frame (110) along the pipeline axis. The stabilizing and fixing mechanism (200) includes a circumferential rotation assembly (270) that cooperates with the axial motion assembly and is used to drive the wide-angle arc frame (110) to rotate along the circumferential direction of the pipeline. A splicing arc frame (120) is provided on one side of the wide-angle arc frame (110) to cooperate with the wide-angle arc frame (110). Telescopic connecting components (400) connected to the splicing arc frame (120) are provided at both ends of the opening of the wide-angle arc frame (110). A welding base frame (130) is provided on the splicing arc frame (120) at the end away from the wide-angle arc frame (110). A stabilizing arc frame (490) is provided on the welding base frame (130), and a stabilizing mechanism (600) cooperating with the stabilizing fixing mechanism (200) is provided on the stabilizing arc frame (490). A guide traction component (500) cooperating with the telescopic connecting component (400) is provided on the wide-angle arc frame (110). A welding mechanism is provided on the welding base frame (130). During welding, the stabilizing arc frame (490) and the wide-angle arc frame (110) are located on both sides of the weld, respectively; The stabilizing and fixing mechanism (200) includes an axial base frame (210) disposed on the wide-angle arc frame (110), and two sets of stabilizing base frames (220) are disposed on the wide-angle arc frame (110), and the two sets of stabilizing base frames (220) are symmetrically disposed on both sides of the axial base frame (210); A set of the stabilizing base frame (220) includes a plurality of stabilizing supports (221) arranged along the length direction of the axial base frame (210), and a stabilizing base (222) is provided on the stabilizing support (221); A flexible clamping assembly (250) is provided on the stable base (222), and a stable top support assembly (260) that cooperates with the flexible clamping assembly (250) is provided on the stable base (222). The circumferential rotation assembly (270) is provided on the stable base (222), and the circumferential rotation assembly (270) cooperates with the stable top support assembly (260). A ring pressure airbag assembly (230) that cooperates with the pipeline is provided on the wide-angle arc frame (110). The axis motion assembly (300) includes a plurality of radial telescopic cylinders (310) disposed on the axis base frame (210), and a walking bracket (320) is provided at the moving end of the radial telescopic cylinder (310), and a track walking unit (330) is provided on the walking bracket (320). The flexible clamping assembly (250) includes flexible supports (251) symmetrically arranged on the stable base (222), a flexible roller (252) is provided on the flexible support (251), a flexible motor that cooperates with the flexible roller (252) is provided on the flexible support (251), a hanging rod is provided on the flexible roller (252), a flexible cloth (253) is provided between the two flexible supports (251), and a stabilizing roller (254) that cooperates with the flexible cloth (253) is provided on the flexible support (251). The stabilizing support assembly (260) includes two sets of supporting hydraulic rods (261) disposed on the stabilizing base (222). The two sets of supporting hydraulic rods (261) are connected to the same supporting arc seat (262). A guide post (263) is disposed at the center of the stabilizing base (222). A guide cylinder (264) that cooperates with the guide post (263) is disposed on the supporting arc seat (262). The circumferential rotation assembly (270) includes a circumferential telescopic rod (271) disposed in the guide column (263), a circumferential rotating frame (272) disposed at the moving end of the circumferential telescopic rod (271), a circumferential rotating wheel (273) disposed on the circumferential rotating frame (272), and a drive unit that cooperates with the circumferential rotating wheel (273) disposed on the circumferential rotating frame (272); the guide cylinder (264) cooperates with the circumferential rotating frame (272), and a circumferential through groove that cooperates with the circumferential rotating frame (272) is provided on the top support arc seat (262); During rotational drive, the circumferential wheel (273) contacts the pipe through the circumferential groove.

2. The pipe welding and installation auxiliary device based on arc frame splicing as described in claim 1, characterized in that: The ring-shaped airbag assembly (230) includes ring-shaped airbag units respectively disposed at both ends of the wide-angle arc frame (110), and protective ring plate units (240) cooperating with the ring-shaped airbag units are disposed at both ends of the wide-angle arc frame (110), and an inflation closed-loop control unit cooperating with the ring-shaped airbag units is disposed on the wide-angle arc frame (110). The ring-shaped airbag unit includes several sets of airbags (231) arranged along the circumferential direction of the wide-angle arc frame. An emergency pressure relief valve is provided on the airbag (231), and an inflation hose connected to the airbag (231) is provided on the wide-angle arc frame (110). A solenoid valve is provided on the inflation hose, and an inflation pump connected to the inflation hose is provided on the wide-angle arc frame. The protective ring plate unit (240) includes a plurality of protective telescopic rods (241) disposed at one end of the wide-angle arc frame (110), and the plurality of protective telescopic rods (241) are connected together to the same protective fan plate (242).

3. The pipe welding and installation auxiliary device based on arc frame splicing as described in claim 1, characterized in that: The telescopic connection assembly (400) includes a connecting base (410) respectively disposed on both sides of the opening of the wide-angle arc frame (110). The connecting base (410) is provided with a connecting groove (420). A connecting screw (430) is disposed in the connecting groove (420). A drive motor (440) cooperating with the connecting screw (430) is disposed on the wide-angle arc frame (110). A sliding connecting seat (460) cooperating with the connecting screw (430) is disposed in the connecting groove (420). A connecting plate (450) connected to the spliced ​​arc frame (120) is disposed on the sliding connecting seat (460). A connecting screw that cooperates with the spliced ​​arc frame (120) is disposed on the connecting plate (450). A docking arc frame (470) is provided at one end of the wide-angle arc frame (110) away from the splicing arc frame (120). A plurality of docking locking cylinders (471) are provided on the docking arc frame. A docking rod (472) that cooperates with the docking locking cylinder (471) is provided on the splicing arc frame (120). A locking screw that cooperates with the docking rod (472) is provided on the docking locking cylinder (471). The wide-angle arc frame (110) is provided with a locking arc frame (480) that cooperates with the splicing arc frame (120). The locking arc frame (480) is provided with a plurality of locking telescopic rods (481). The splicing arc frame (120) is provided with a locking alignment cylinder (482) that cooperates with the locking telescopic rods (481).

4. The pipe welding and installation auxiliary device based on arc frame splicing as described in claim 1, characterized in that: The stabilizing arc frame (490) includes a stabilizing arc plate (491) connected to the welding base frame (130), and the stabilizing arc plate (491) is provided with a traction frame (492) that cooperates with the guide traction assembly (500). The stabilizing arc plate (491) is provided with a plurality of stabilizing connecting frames (493). A fixed arc plate is provided at one end of the stabilizing connecting frame (493) away from the welding base frame (130), and a plurality of stabilizing fan frames are provided on the stabilizing connecting frame (493). The stabilizing frame (493) is provided with a stabilizing mechanism (600), and the structure of the stabilizing mechanism (600) is basically the same as the structure of the stabilizing fixing mechanism (200).

5. The pipe welding and installation auxiliary device based on arc frame splicing as described in claim 1, characterized in that: The guide traction assembly (500) includes a traction base plate (510) disposed at one end of the wide-angle arc frame (110) away from the splicing arc frame (120), a traction base frame (520) disposed on the traction base plate (510), a traction roller shaft (530) disposed on the traction roller shaft (530), a traction winch (540) disposed on the traction roller shaft (530), a traction motor (550) cooperating with the traction roller shaft (530) disposed on the traction base frame (520), and a traction rope (560) disposed on the traction winch (540). The wide-angle arc frame (110) is provided with several sets of guide frames (570), and the guide frames (570) are provided with guide rollers (580) that cooperate with the traction hinge rope. The traction hinge rope is connected to the stable arc frame (490) via the guide rollers (580).

6. The pipe welding and installation auxiliary device based on arc frame splicing as described in claim 1, characterized in that: The welding base frame (130) includes a welding arc frame (131), on which a stable triangular frame is provided; the welding arc frame is provided with a welding base (132) that cooperates with the welding mechanism. The welding mechanism includes welding components for completing welding work. A gas cylinder support is provided on the wide-angle arc frame (110) and / or the spliced ​​arc frame (120). A welding shielding gas supply component that cooperates with the welding components is provided on the gas cylinder support.

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