Pipeline welding installation auxiliary device based on arc frame splicing and installation method of pipeline welding installation auxiliary device

Abstract

The invention discloses a pipeline welding installation auxiliary device based on arc frame splicing and an installation method thereof, and relates to the technical field of wallboard auxiliary positioning, the pipeline welding installation auxiliary device comprises a wide-angle arc frame, a stable fixing mechanism is arranged on the wide-angle arc frame, and an axis movement assembly is arranged on the wide-angle arc frame; a splicing arc frame is arranged on one side of the wide-angle arc frame, telescopic connecting assemblies are arranged at the two ends of an opening of the wide-angle arc frame, a welding base frame is arranged at the end, away from the wide-angle arc frame, of the splicing arc frame, a stabilizing arc frame is arranged on the welding base frame, a stabilizing mechanism is arranged on the stabilizing arc frame, and a guiding traction assembly is arranged on the wide-angle arc frame. And a welding mechanism is arranged on the welding base frame. Through ingenious structural design and 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 manual intervention requirement is reduced, and wide engineering application value is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wall panel auxiliary positioning, and particularly to an auxiliary device for pipeline welding installation based on arc frame splicing and an installation method thereof. Background Art

[0002] Pipeline welding is an important process indispensable in modern industrial manufacturing and infrastructure construction, and is widely used in fields such as petroleum, natural gas, chemical industry, electric power, and ocean engineering. With the continuous growth of industrial demands, pipeline welding technology has experienced a development process from manual welding to automated welding to improve welding quality, operation efficiency, and safety.

[0003] Currently, there are many deficiencies in the field of pipeline welding installation auxiliary devices. On the one hand, the structures of some traditional devices are too simple and can only provide basic pipeline support and fixation functions. In the face of complex pipeline orientations, different pipe diameter specifications, and changing on-site environments, it is difficult to achieve rapid and accurate positioning and installation. For example, some small pipeline clamps cannot meet the welding requirements of large-diameter pipelines, while large fixed brackets are difficult to operate in narrow spaces, severely restricting the welding construction efficiency. On the other hand, the automation and intelligence levels of existing auxiliary devices also need to be improved. In most cases, pipeline welding installation still relies on manual operation and visual judgment, and there are no effective technical means for real-time monitoring and automatic adjustment of problems such as precise alignment of welds and control of thermal deformation during the welding process. This not only results in poor stability of welding quality, prone to quality problems such as weld defects and pipeline misalignment, but also increases the costs of later inspection and maintenance.

[0004] How to solve the above technical problems is the subject faced by the present invention. Summary of the Invention

[0005] To solve the deficiencies of the prior art, the present invention provides a reasonably designed and safe and reliable auxiliary device for pipeline welding installation based on arc frame splicing and an installation method thereof. The technical solution adopted by the present invention to solve its technical problems is: an auxiliary device for pipeline welding installation based on arc frame splicing, including a wide-angle arc frame, a stable fixation mechanism for stably fixing the wide-angle arc frame on the pipeline is arranged on the wide-angle arc frame, an axial movement assembly for moving the wide-angle arc frame along the pipeline axis direction is arranged on the wide-angle arc frame, and the stable fixation mechanism includes a circumferential rotation assembly that cooperates with the axial movement assembly and is used to drive the wide-angle arc frame to rotate along the circumferential direction of the pipeline. One side of the wide-angle arc frame is provided with a splicing arc frame that cooperates with the wide-angle arc frame. Telescopic connection components for connecting with the splicing arc frame are arranged at both ends of the opening of the wide-angle arc frame. A welding base frame is arranged at one end of the splicing arc frame away from the wide-angle arc frame. A stabilizing arc frame is arranged on the welding base frame, and a stabilizing mechanism that cooperates with the stable fixing mechanism is arranged on the stabilizing arc frame. A guiding traction component that cooperates with the telescopic connection component is arranged on the wide-angle arc frame. A welding mechanism is arranged on the welding base frame; During the welding operation, the stabilizing arc frame and the wide-angle arc frame are respectively located on both sides of the weld seam.

[0006] Furthermore, the stable fixing mechanism includes an axis base frame arranged on the wide-angle arc frame. Two groups of stable base frames are arranged on the wide-angle arc frame, and the two groups of stable base frames are symmetrically arranged on both sides of the axis base frame. One group of stable base frames includes a plurality of stable brackets arranged along the length direction of the axis base frame, and a stable base is arranged on the stable bracket; A flexible clamping component is arranged on the stable base. A stable top support component that cooperates with the flexible clamping component is arranged on the stable base. The circumferential rotation component is arranged on the stable base, and the circumferential rotation component cooperates with the stable top support component. A ring pressing airbag component that cooperates with the pipeline is arranged on the wide-angle arc frame.

[0007] Furthermore, the axis movement component includes a plurality of radial telescopic cylinders arranged on the axis base frame. A walking bracket is arranged at the mobile end of the radial telescopic cylinder, and a crawler walking unit is arranged on the walking bracket; The ring pressing airbag component includes ring pressing airbag units respectively arranged at both ends of the wide-angle arc frame. Protection ring plate units that cooperate with the ring pressing airbag units are arranged at both ends of the wide-angle arc frame. An inflation closed-loop control unit that cooperates with the ring pressing airbag units is arranged on the wide-angle arc frame; The ring pressing airbag unit includes a plurality of groups of airbags arranged along the circumferential direction of the wide-angle ring frame. An emergency pressure relief valve is arranged on the airbag. An inflation hose connected to the airbag is arranged on the wide-angle arc frame. An electromagnetic valve is arranged on the inflation hose. An air pump connected to the inflation hose is arranged on the wide-angle ring frame; The protection ring plate unit includes a plurality of protection telescopic rods arranged at one section of the wide-angle arc frame, and the plurality of protection telescopic rods are commonly connected to the same protection fan plate.

[0008] Further, the flexible clamping assembly includes flexible brackets symmetrically arranged on the stable base. A flexible roller shaft is arranged on the flexible brackets, and a flexible motor cooperating with the flexible roller shaft is arranged on the flexible brackets. A hanging rod is arranged on the flexible roller shaft. A flexible cloth is arranged between the two flexible brackets, and a stabilizing roller shaft cooperating with the flexible cloth is arranged on the flexible brackets; The stable top support assembly includes two groups of top support hydraulic rods arranged on the stable base. The two groups of top support hydraulic rods are commonly connected to the same top support arc seat. A guiding column is arranged at the center of the stable base, and a guiding cylinder cooperating with the guiding column is arranged on the top support arc seat; The circumferential rotation assembly includes a circumferential telescopic rod arranged in the guiding column. A circumferential rotating frame is arranged at the mobile end of the circumferential telescopic rod. A circumferential rotating wheel is arranged on the circumferential rotating frame, and a driving unit cooperating with the circumferential rotating wheel is arranged on the circumferential rotating frame; A circumferential through groove cooperating with the circumferential rotating frame and the guiding cylinder is formed on the top support arc seat; When rotating and driving, the circumferential rotating wheel contacts the pipeline through the circumferential pipe groove.

[0009] Further, the telescopic connection assembly includes connection bases respectively arranged on both sides of the opening of the wide-angle arc frame. A connection base groove is formed on the connection base, and a connection screw rod is arranged in the connection base groove. A driving motor cooperating with the connection screw rod is arranged on the wide-angle arc frame. A sliding connection seat cooperating with the connection screw rod is arranged in the connection base groove, and a connection plate connecting with the assembled arc frame is arranged on the sliding connection seat. A connection screw rod cooperating with the assembled arc frame is arranged on the connection plate, At one end of the wide-angle arc frame away from the assembled arc frame, a butt joint arc frame is arranged with the assembled arc frame. A plurality of butt joint locking cylinders are arranged on the butt joint arc frame, and a butt joint rod cooperating with the butt joint locking cylinders is arranged on the assembled arc frame. A locking screw rod cooperating with the butt joint rod is arranged on the butt joint locking cylinder; A locking arc frame cooperating with the assembled arc frame is arranged on the wide-angle arc frame. A plurality of locking telescopic rods are arranged on the locking arc frame, and a locking alignment cylinder cooperating with the locking telescopic rods is arranged on the assembled arc frame.

[0010] Further, the stabilizing arc frame includes a stabilizing arc plate connected to the welding base frame, and a traction frame cooperating with the guiding and traction assembly is arranged on the stabilizing arc plate. A plurality of stabilizing connecting frames are arranged on the stabilizing arc plate. A fixing arc plate is arranged at one end of the stabilizing connecting frame away from the welding base frame, and a plurality of stabilizing fan-shaped frames are arranged on the stabilizing connecting frame; A stabilizing mechanism is arranged on the stabilizing connecting frame, and the structure of the stabilizing mechanism is basically the same as that of the stable fixing mechanism.

[0011] Further, the guiding and traction assembly includes a traction base plate arranged at one end of the wide-angle arc frame away from the splicing arc frame. A traction base frame is arranged on the traction base plate. A traction roller shaft is arranged on the traction base frame. A traction winch is arranged on the traction roller shaft. A traction motor cooperating with the traction roller shaft is arranged on the traction base frame. A traction cable is arranged on the traction winch; A number of groups of guiding and leading frames are arranged on the wide-angle arc frame. Guiding rollers cooperating with the traction cable are arranged on the guiding and leading frames. The traction cable is connected to the stable arc frame via the guiding rollers.

[0012] Further, the welding base frame includes a welding arc frame. A stable triangular frame is arranged on the welding arc frame. A welding base platform cooperating with the welding mechanism is arranged on the welding arc frame; The welding mechanism includes a welding component for completing welding work. A gas cylinder support is arranged on the wide-angle arc frame and / or the splicing arc frame. A welding protective gas supply component cooperating with the welding component is arranged on the gas cylinder support. A welding torch adjusting component for precisely adjusting the position of the welding torch is arranged on the welding support. A weld seam tracking component is arranged on the welding support. And an electric control system is arranged on the welding support.

[0013] The installation method of the pipeline welding and installation auxiliary device includes the following steps: S1: Install the wide-angle arc frame on the outer wall of the pipeline to be welded. Place the wide-angle arc frame outside the pipeline and initially fix it through the stable fixing mechanism. Then, drive the wide-angle arc frame to move along the pipeline axis to the welding starting position by using the axial movement component, and adjust the wide-angle arc frame to a suitable welding angle through the circumferential rotation component. Finally, use the stable fixing mechanism for final fixation again; S2: Connect the splicing arc frame with the wide-angle arc frame, and precisely adjust the position and firmly connect them through the telescopic connection component and the guiding and traction assembly to form a complete ring structure; S3: Install the welding base frame on the side of the splicing arc frame away from the wide-angle arc frame, and adjust the stable arc frame to the welding position; S4: Start the welding mechanism to weld the pipeline weld seam, and cooperate with the axial movement component and the circumferential rotation component during the welding process to achieve full circumferential automatic welding; S5: After welding is completed, stop the welding mechanism, adjust the axial movement component to move the wide-angle arc frame away from the weld area, and release the stable fixing mechanism to disconnect the wide-angle arc frame from the pipeline; S6: Disassemble the splicing arc frame and the welding base frame, and remove the equipment.

[0014] In step S1, when preliminary fixation or final fixation is performed by a stable fixing mechanism, an air pump is used to inflate the annular pressure airbag unit so that the airbag fits the outer wall of the pipe, and at the same time, a flexible clamping assembly and a stable supporting assembly flexibly constrain and stably support the pipe.

[0015] The combined design of the wide-angle arc frame and the split arc frame in the present invention can adapt to pipes of different diameters and lengths. The semi-annular structure of the wide-angle arc frame provides a wider support surface, while the flexible connection method of the split arc frame allows the device to be adjusted according to the specific size of the pipe, ensuring stable support and fixation in various pipe welding scenarios.

[0016] The stable fixing mechanism in the present invention is equipped with a flexible clamping assembly and a stable top support assembly, which realizes flexible constraint and stable support of the pipeline by unfolding the flexible cloth and moving the top support arc seat. Combined with the annular pressure airbag assembly, it can effectively prevent the displacement and vibration of the pipeline during welding, thereby improving the welding quality. The coordinated work of the axis motion assembly and the circumferential rotation assembly enables the device to move and adjust precisely along the axis and circumference of the pipeline. The crawler walking unit provides stable axis movement, while the circumferential rotating wheel ensures that the wide-angle arc frame can accurately align the welding angle to achieve full-circle automatic welding.

[0017] The inflatable closed-loop control unit and emergency pressure relief valve in the present invention ensure that the ring pressure airbag unit can respond quickly in abnormal situations to avoid potential risks. In addition, the protective ring plate unit effectively prevents sparks or other harmful substances generated during welding from damaging the equipment, further improving safety. The traction winch and guide roller system ensure that welding operations can be completed smoothly even in a small space and ensure the safety of operators.

[0018] The present invention adopts a modular design concept, such as the spliced ​​arc frame, telescopic connection components, and stable arc frame, which all support quick disassembly and assembly. This not only simplifies the on-site assembly process, but also facilitates transportation and maintenance, greatly shortens the construction preparation time, and improves the overall execution efficiency of the project. The design of the docking locking cylinder and the locking screw makes the connection between the spliced ​​arc frame and the wide-angle arc frame more stable, and easy to disassemble, which is convenient for multiple use.

[0019] The guide traction assembly in the present invention ensures close fit between the spliced ​​arc frame and the wide-angle arc frame through the traction winch and guide roller system, reducing the time of manual adjustment and improving the assembly efficiency of the entire system. The stable tripod and welding base design on the welding base frame enable the welding mechanism to work stably at any angle without frequent adjustment of the equipment position, further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle; Figure 2 Schematic diagram of the overall structure of the present invention from a second perspective; Figure 3 Exploded schematic diagram of the cooperation of the wide-angle arc frame, locking arc frame and docking arc frame of the present invention; Figure 4 Partial schematic diagram of the cooperation between the wide-angle arc frame and the guiding and traction assembly of the present invention; Figure 5 Schematic diagram of the cooperation between the wide-angle arc frame and the stable fixing mechanism of the present invention; Figure 6 Partial schematic diagram of the cooperation between the wide-angle arc frame and the stable fixing mechanism of the present invention; Figure 7 Schematic diagram of the cooperation of the flexible cloth, stable top support assembly and circumferential rotation assembly of the present invention; Figure 8 Schematic diagram of the cooperation of the telescopic connection assembly, spliced arc frame and welding base frame of the present invention.

[0021] Among them, the reference signs in the drawings are: 110, wide-angle arc frame; 120, spliced arc frame; 130, welding base frame; 131, welding arc frame; 132, welding base; 200, stable fixing mechanism; 210, axis base frame; 220, stable base frame; 221, stable support; 222, stable base; 230, ring pressing 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 shaft; 253, flexible cloth; 254, stable roller shaft; 260, stable top support assembly; 261, top support hydraulic rod; 262, top support arc seat; 263, guiding column; 264, guiding cylinder; 270, circumferential rotation assembly; 271, circumferential telescopic rod; 272, circumferential rotating frame; 273, circumferential rotating wheel; 300, axis movement assembly; 310, radial telescopic cylinder; 320, walking support; 330, crawler walking unit; 400, telescopic connection assembly; 410, connection base; 420, connection base groove; 430, connection screw rod; 440, driving motor; 450, connection plate; 460, connection 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, stable arc frame; 491, stable arc plate; 492, traction frame; 493, stable connecting frame; 500, guiding and traction assembly; 510, traction base plate; 520, traction base frame; 530, traction roller shaft; 540, traction winch; 550, traction motor; 560, traction rope; 570, guiding leading frame; 580, guiding roller. Detailed implementation manners

[0022] See Figures 1 to 8As shown in the figure, a pipeline welding and installation auxiliary device based on arc frame splicing includes a wide-angle arc frame 110. A stable fixing mechanism 200 for stably fixing the wide-angle arc frame 110 on the pipeline is arranged on the wide-angle arc frame 110. An axial movement component 300 for moving the wide-angle arc frame 110 along the pipeline axis direction is arranged on the wide-angle arc frame 110. The stable fixing mechanism 200 includes a circumferential rotation component 270 that cooperates with the axial movement component 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 that cooperates with the wide-angle arc frame 110 is arranged on one side of the wide-angle arc frame 110. Telescopic connection components 400 connected to the splicing arc frame 120 are arranged at both ends of the opening of the wide-angle arc frame 110. A welding base frame 130 is arranged at one end of the splicing arc frame 120 away from the wide-angle arc frame 110. A stable arc frame 490 is arranged on the welding base frame 130, and a stabilizing mechanism 600 that cooperates with the stable fixing mechanism 200 is arranged on the stable arc frame 490. A guiding and traction component 500 that cooperates with the telescopic connection components 400 is arranged on the wide-angle arc frame 110. A welding mechanism is arranged on the welding base frame 130; During welding work, the stable arc frame 490 and the wide-angle arc frame 110 are respectively located on both sides of the weld.

[0023] Further, the stable fixing mechanism 200 includes an axial base frame 210 arranged on the wide-angle arc frame 110. Two groups of stable base frames 220 are arranged on the wide-angle arc frame 110, and the two groups of stable base frames 220 are symmetrically arranged on both sides of the axial base frame 210, One group of the stable base frames 220 includes a plurality of stable brackets 221 arranged along the length direction of the axial base frame 210. A stable base 222 is arranged on the stable bracket 221; A flexible clamping component 250 is arranged on the stable base 222. A stable top support component 260 that cooperates with the flexible clamping component 250 is arranged on the stable base 222. The circumferential rotation component 270 is arranged on the stable base 222, and the circumferential rotation component 270 cooperates with the stable top support component 260. A ring pressure airbag component 230 that cooperates with the pipeline is arranged on the wide-angle arc frame 110.

[0024] Further, the axial movement component 300 includes a plurality of radial telescopic cylinders 310 arranged on the axial base frame 210. A walking bracket 320 is arranged at the mobile end of the radial telescopic cylinder 310. A crawler walking unit 330 is arranged on the walking bracket 320; The ring pressure airbag assembly 230 includes ring pressure airbag units respectively arranged at both ends of the wide-angle arc frame 110, and protection ring plate units 240 cooperating with the ring pressure airbag units are arranged at both ends of the wide-angle arc frame 110. An inflation closed-loop control unit cooperating with the ring pressure airbag units is arranged on the wide-angle arc frame 110; The ring pressure airbag unit includes a plurality of groups of airbags 231 arranged along the circumferential direction of the wide-angle ring frame. An emergency pressure relief valve is arranged on the airbag 231, and an inflation hose communicating with the airbag 231 is arranged on the wide-angle arc frame 110. An electromagnetic valve is arranged on the inflation hose, and an air pump communicating with the inflation hose is arranged on the wide-angle ring frame; The protection ring plate unit 240 includes a plurality of protection telescopic rods 241 arranged at one section of the wide-angle arc frame 110, and the plurality of protection telescopic rods 241 are commonly connected to the same protection fan plate 242.

[0025] Specifically, the crawler walking unit 330 is basically the same as the market's crawler structure and will not be elaborated too much in this article.

[0026] Preferably, a control chip cooperating with the ring pressure airbag unit and the protection ring plate unit 240 is arranged on the wide-angle arc frame 110.

[0027] Preferably, the structure of the inflation closed-loop control unit is the same as the existing inflation control structure.

[0028] Furthermore, the flexible clamping assembly 250 includes flexible brackets 251 symmetrically arranged on the stable base 222. Flexible roller shafts 252 are arranged on the flexible brackets 251. Flexible motors cooperating with the flexible roller shafts 252 are arranged on the flexible brackets 251. Hanging rods are arranged on the flexible roller shafts 252. A flexible cloth 253 is arranged between the two flexible brackets 251, and stabilizing roller shafts 254 cooperating with the flexible cloth 253 are arranged on the flexible brackets 251; The stable top support assembly 260 includes two groups of top support hydraulic rods 261 arranged on the stable base 222. The two groups of top support hydraulic rods 261 are commonly connected to the same top support arc seat 262. A guide post 263 is arranged at the center of the stable base 222, and a guide cylinder 264 cooperating with the guide post 263 is arranged on the top support arc seat 262; The circumferential rotation assembly 270 includes a circumferential telescopic rod 271 disposed in the guiding column 263. At the moving end of the circumferential telescopic rod 271, there is a circumferential rotating frame 272. A circumferential rotating wheel 273 is disposed on the circumferential rotating frame 272. A driving unit cooperating with the circumferential rotating wheel 273 is disposed on the circumferential rotating frame 272. A circumferential through groove cooperating with the circumferential rotating frame 272 and the guiding cylinder 264 is formed on the top support arc seat 262. When rotation is driven, the circumferential rotating wheel 273 contacts the pipeline through the circumferential pipe groove.

[0029] Further, the telescopic connection assembly 400 includes connection bases 410 respectively disposed on both sides of the opening of the wide-angle arc frame 110. A connection base groove 420 is formed on the connection base 410. A connection lead screw 430 is disposed in the connection base groove 420. A driving motor 440 cooperating with the connection lead screw 430 is disposed on the wide-angle arc frame 110. A sliding connection seat 460 cooperating with the connection lead screw 430 is disposed in the connection base groove 420. A connection plate 450 connected to the assembled arc frame 120 is disposed on the sliding connection seat 460. A connection screw rod cooperating with the assembled arc frame 120 is disposed on the connection plate 450. At one end of the wide-angle arc frame 110 away from the assembled arc frame 120, there is a docking arc frame 470 disposed with the assembled arc frame 120. A plurality of docking locking cylinders 471 are disposed on the docking arc frame. A docking rod 472 cooperating with the docking locking cylinder 471 is disposed on the assembled arc frame 120. A locking screw rod cooperating with the docking rod 472 is disposed on the docking locking cylinder 471. A locking arc frame 480 cooperating with the assembled arc frame 120 is disposed on the wide-angle arc frame 110. A plurality of locking telescopic rods 481 are disposed on the locking arc frame 480. A locking alignment cylinder 482 cooperating with the locking telescopic rod 481 is disposed on the assembled arc frame 120.

[0030] Further, the stabilizing arc frame 490 includes a stabilizing arc plate 491 connected to the welding base frame 130. A traction frame 492 cooperating with the guiding and traction assembly 500 is disposed on the stabilizing arc plate 491. A plurality of stabilizing connection frames 493 are disposed on the stabilizing arc plate 491. At the end of the stabilizing connection frame 493 away from the welding base frame 130, there is a fixed arc plate. A plurality of stabilizing fan-shaped frames are disposed on the stabilizing connection frame 493. A stabilizing mechanism 600 is disposed on the stabilizing connection frame 493, and the structure of the stabilizing mechanism 600 is basically the same as that of the stable fixing mechanism 200.

[0031] Further, the guiding and 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 is provided on the traction base plate 510. A traction roller shaft 530 is provided on the traction base frame 520. A traction winch 540 is provided on the traction roller shaft 530. A traction motor 550 cooperating with the traction roller shaft 530 is provided on the traction base frame 520. A traction cable 560 is provided on the traction winch 540; A number of groups of guiding and leading frames 570 are provided on the wide-angle arc frame 110. Guide rollers 580 cooperating with the traction cable are provided on the guiding and leading frames 570. The traction cable is connected to the stable arc frame 490 via the guide rollers 580.

[0032] The welding base frame 130 includes a welding arc frame 131. A stable triangular frame is provided on the welding arc frame 131; A welding base 132 cooperating with the welding mechanism is provided on the welding arc frame; The welding mechanism includes a welding assembly for completing welding work. A gas cylinder bracket is provided on the wide-angle arc frame 110 and / or the splicing arc frame 120. A welding protective gas supply assembly cooperating with the welding assembly is provided on the gas cylinder bracket. A welding torch adjustment assembly for precisely adjusting the position of the welding torch is provided on the welding bracket. A weld seam tracking assembly is provided on the welding bracket. And an electric control system is provided on the welding bracket.

[0033] Specifically, the structures of the above-mentioned welding assembly, welding protective gas supply assembly, welding torch adjustment assembly, weld seam tracking assembly, and electric control system are basically the same as the existing welding structures, and will not be elaborated here too much.

[0034] The installation method of the pipeline welding and installation auxiliary device includes the following steps: S1: Install the wide-angle arc frame 110 on the outer wall of the pipeline to be welded. Place the wide-angle arc frame 110 outside the pipeline and initially fix it through the stable fixing mechanism 200. Subsequently, drive the wide-angle arc frame 110 to move along the pipeline axis to the welding starting position by means of the axial movement assembly 300, and adjust the wide-angle arc frame 110 to a suitable welding angle through the circumferential rotation assembly 270. Finally, use the stable fixing mechanism 200 for final fixing again; S2: Connect the splicing arc frame 120 to the wide-angle arc frame 110, and precisely adjust the position and firmly connect them through the telescopic connection assembly 400 and the guiding and traction assembly 500 to form a complete ring structure; 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; S4: Start the welding mechanism to weld the pipeline weld, and during the welding process, the axis motion component 300 and the circumferential rotation component 270 cooperate to achieve full circumferential automatic welding; the welding gun adjustment component adjusts the welding gun position, the welding shielding gas supply component provides shielding gas, and the electronic control system controls the welding component to start welding; during the welding process, the weld tracking component monitors and feedbacks the weld position deviation in real time, and the electronic control system adjusts the welding gun position and posture. At the same time, according to the welding progress and pipeline deformation, the control chip adjusts the inflation amount of the ring pressure airbag unit and the top support position of the stable top support component 260 to ensure stable welding quality; S5: After the welding is completed, the welding mechanism is stopped, the axis motion assembly 300 is adjusted to make the wide-angle arc frame 110 away from the weld area, and the stable fixing mechanism 200 is released to make the wide-angle arc frame 110 out of contact with the pipeline; S6: Disassemble the spliced ​​arc frame 120 and the welded base frame 130, and remove the equipment.

[0035] In step S1, when preliminary fixation or final fixation is performed by the stable fixing mechanism 200, the air pump inflates the annular pressure airbag unit to make the airbag 231 fit the outer wall of the pipe, and at the same time, the flexible clamping component 250 and the stable supporting component 260 flexibly constrain and stably support the pipe.

[0036] In step S1, the inflation volume of the inflation pump and the opening of the solenoid valve are precisely controlled by the control chip, so that the expansion degree of the airbag 231 of the annular pressure airbag unit adapts to the pipe diameter. At the same time, the flexible motor of the flexible clamping assembly 250 drives the flexible roller 252 to rotate, driving the flexible cloth 253 to unfold and fit the outer wall of the pipe. The hanging rod assists in fixing the flexible cloth 253 to form a flexible constraint on the pipe. The supporting hydraulic rod 261 of the stable supporting assembly 260 pushes the supporting arc seat 262 to move along the guide column 263, and the inner arc surface of the supporting arc seat 262 contacts the outer wall of the pipe, thereby initially establishing a stable support.

[0037] In step S1, the driving motor 440 of the axial motion assembly 300 controls the extension and retraction of the moving end of the radial telescopic cylinder 310, thereby adjusting the position of the walking bracket 320, and the crawler walking unit 330 moves along the axial direction on the outer surface of the pipeline, driving the entire device to move precisely along the pipeline axis to the welding starting position; the driving unit of the circumferential rotation assembly 270 drives the circumferential rotating wheel 273 to rotate, and the circumferential rotating wheel 273 contacts the pipeline through the circumferential pipe groove, overcomes the resistance of the stable support assembly 260, and drives the wide-angle arc frame 110 to rotate around the pipeline and adjust to a suitable welding angle. During the process, the guide column 263 and the guide cylinder 264 cooperate to ensure smooth movement.

[0038] In step S2, align the connecting plate 450 on one side of the spliced arc frame 120 with the connecting base 410 at the open end of the wide-angle arc frame 110, insert the connecting screw and initially tighten it to establish a preliminary connection between the spliced arc frame 120 and the wide-angle arc frame 110. The driving motor 440 on the wide-angle arc frame 110 drives the connecting lead screw 430 to rotate, pushing the connecting base 410 to move in the connecting base groove 420, further pulling closer or pushing away the spliced arc frame 120, precisely adjusting their relative positions to ensure a tight fit between the spliced arc frame 120 and the wide-angle arc frame 110. After the docking locking cylinder 471 and the docking rod 472 are aligned, tighten the locking screw 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.

[0039] In step S4, the preparations of the welding mechanism on the welding base frame 130 include: the welding torch adjustment assembly adjusts the welding torch to the initial position of the weld seam; the gas cylinder bracket of the welding protection gas supply assembly fixes the protection gas cylinder, and the gas path is connected to the welding assembly; the weld seam tracking assembly is started to detect the weld seam trajectory and feedback it to the electronic control system. The electronic control system controls the welding assembly to start according to the preset welding parameters and the real-time feedback information, and starts the welding process by striking an arc. At the same time, the stable fixing mechanism 200 and the stabilizing mechanism 600 continuously act to ensure the stability of the pipeline and the device during the welding process.

[0040] During the welding process in step S4, the weld seam tracking assembly real-time monitors the deviation of the weld seam position. The electronic control system timely adjusts the position and posture of the welding torch to ensure that the welding torch always walks accurately along the weld seam. According to the welding progress and the heat deformation of the pipeline, the inflation amount of the ring pressing airbag unit is adjusted in a timely manner through 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 assembly 260 finely adjusts the position of the top support arc seat 262 to adapt to the minor deformation of the pipeline and ensure the stability of the welding quality.

[0041] In steps S4 - S6, when the welding reaches the end point, the welding assembly stops working, the welding torch automatically retracts to the safe position, and the gas path of the welding protection gas supply assembly is closed. Releasing the stable fixing mechanism 200 and the stabilizing mechanism 600 includes: the air pump reversely rotates to extract the gas in the airbag 231, the airbag 231 shrinks, the flexible clamping assembly 250 and the stable top support assembly 260 release the restraint on the pipeline, and components such as the locking screw and the locking telescopic rod 481 are reset to release the connection between the spliced arc frame 120 and the wide-angle arc frame 110. Finally, move the device in the reverse direction of the pipeline axis to a suitable position, remove the entire auxiliary device, and complete the pipeline welding and installation operation for this time.

[0042] The un-described technical features of the present invention can be achieved by or adopted from the prior art, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. An auxiliary device for pipeline welding and installation based on arc frame splicing, characterized in that: It includes a wide-angle arc frame (110), on which a stable fixing mechanism (200) for stably fixing the wide-angle arc frame (110) on the pipeline is provided. An axial movement component (300) for moving the wide-angle arc frame (110) along the pipeline axis direction is provided on the wide-angle arc frame (110). The stable fixing mechanism (200) includes a circumferential rotation component (270) that cooperates with the axial movement component and is used to drive the wide-angle arc frame (110) to rotate along the circumferential direction of the pipeline; On one side of the wide-angle arc frame (110), a splicing arc frame (120) that cooperates with the wide-angle arc frame (110) is provided. At the two open ends of the wide-angle arc frame (110), a telescopic connection component (400) connected to the splicing arc frame (120) is provided. At one end of the splicing arc frame (120) far from the wide-angle arc frame (110), a welding base frame (130) is provided. A stable arc frame (490) is provided on the welding base frame (130), and a stabilizing mechanism (600) that cooperates with the stable fixing mechanism (200) is provided on the stable arc frame (490). A guiding and traction component (500) that cooperates with the telescopic connection component (400) is provided on the wide-angle arc frame (110). A welding mechanism is provided on the welding base frame (130); During welding work, the stable arc frame (490) and the wide-angle arc frame (110) are respectively located on both sides of the weld.

2. The auxiliary device for pipe welding and installation based on splicing of arc frames according to claim 1, characterized in that: The stable fixing mechanism (200) includes an axial base frame (210) provided on the wide-angle arc frame (110). Two groups of stable base frames (220) are provided on the wide-angle arc frame (110), and the two groups of stable base frames (220) are symmetrically arranged on both sides of the axial base frame (210); One group of the stable base frames (220) includes a plurality of stable brackets (221) arranged along the length direction of the axial base frame (210). A stable base (222) is provided on the stable bracket (221); A flexible clamping component (250) is provided on the stable base (222). A stable top support component (260) that cooperates with the flexible clamping component (250) is provided on the stable base (222). The circumferential rotation component (270) is provided on the stable base (222), and the circumferential rotation component (270) cooperates with the stable top support component (260). A ring pressing airbag component (230) that cooperates with the pipeline is provided on the wide-angle arc frame (110).

3. The auxiliary device for pipe welding and installation based on arc frame splicing according to claim 2, wherein: The axial movement component (300) includes a plurality of radial telescopic cylinders (310) provided on the axial base frame (210). A walking bracket (320) is provided at the mobile end of the radial telescopic cylinder (310). A crawler walking unit (330) is provided on the walking bracket (320); The ring pressure airbag assembly (230) includes ring pressure airbag units respectively arranged at two ends of the wide-angle arc frame (110), and protection ring plate units (240) cooperating with the ring pressure airbag units are arranged at two ends of the wide-angle arc frame (110). An inflation closed-loop control unit cooperating with the ring pressure airbag units is arranged on the wide-angle arc frame (110). The ring pressure airbag unit includes several groups of airbags (231) arranged along the circumferential direction of the wide-angle ring frame. Emergency pressure relief valves are arranged on the airbags (231). An inflation hose communicating with the airbags (231) is arranged on the wide-angle arc frame (110). An electromagnetic valve is arranged on the inflation hose. An air pump communicating with the inflation hose is arranged on the wide-angle ring frame. The protection ring plate unit (240) includes several protection telescopic rods (241) arranged at a section of the wide-angle arc frame (110), and the several protection telescopic rods (241) are commonly connected to the same protection fan plate (242).

4. The auxiliary device for pipe welding and installation based on arc frame splicing according to claim 2, wherein: The flexible clamping assembly (250) includes flexible brackets (251) symmetrically arranged on the stable base (222). Flexible roller shafts (252) are arranged on the flexible brackets (251). Flexible motors cooperating with the flexible roller shafts (252) are arranged on the flexible brackets (251). Hanging rods are arranged on the flexible roller shafts (252). A flexible cloth (253) is arranged between the two flexible brackets (251). And stable roller shafts (254) cooperating with the flexible cloth (253) are arranged on the flexible brackets (251). The stable top support assembly (260) includes two groups of top support hydraulic rods (261) arranged on the stable base (222). The two groups of top support hydraulic rods (261) are commonly connected to the same top support arc seat (262). A guide post (263) is arranged at the center of the stable base (222). A guide cylinder (264) cooperating with the guide post (263) is arranged on the top support arc seat (262). The circumferential rotation assembly (270) includes a circumferential telescopic rod (271) arranged in the guide post (263). A circumferential rotation frame (272) is arranged at the mobile end of the circumferential telescopic rod (271). A circumferential runner (273) is arranged on the circumferential rotation frame (272). A driving unit cooperating with the circumferential runner (273) is arranged on the circumferential rotation frame (272). A circumferential through groove cooperating with the circumferential rotation frame (272) and the guide cylinder (264) is formed on the top support arc seat (262). When rotating and driving, the circumferential runner (273) contacts the pipeline through the circumferential pipe groove.

5. The auxiliary device for pipe welding and installation based on arc frame splicing according to claim 1, characterized in that: The telescopic connection component (400) includes connection bases (410) respectively arranged on both sides of the opening of the wide-angle arc frame (110). A connection base groove (420) is provided on the connection base (410). A connection lead screw (430) is arranged in the connection base groove (420). A driving motor (440) cooperating with the connection lead screw (430) is arranged on the wide-angle arc frame (110). A sliding connection seat (460) cooperating with the connection lead screw (430) is arranged in the connection base groove (420). A connection plate (450) connected to the spliced arc frame (120) is arranged on the sliding connection seat (460). A connection screw rod cooperating with the spliced arc frame (120) is arranged on the connection plate (450). A docking arc frame (470) is arranged at one end of the wide-angle arc frame (110) far from the spliced arc frame (120). A number of docking locking cylinders (471) are arranged on the docking arc frame. A docking rod (472) cooperating with the docking locking cylinder (471) is arranged on the spliced arc frame (120). A locking screw rod cooperating with the docking rod (472) is arranged on the docking locking cylinder (471). A locking arc frame (480) cooperating with the spliced arc frame (120) is arranged on the wide-angle arc frame (110). A number of locking telescopic rods (481) are arranged on the locking arc frame (480). A locking alignment cylinder (482) cooperating with the locking telescopic rod (481) is arranged on the spliced arc frame (120).

6. The auxiliary device for pipe welding and installation based on splicing of arc frames according to claim 1, characterized in that: The stable arc frame (490) includes a stable arc plate (491) connected to the welding base frame (130). A traction frame (492) cooperating with the guiding and traction component (500) is arranged on the stable arc plate (491). A number of stable connection frames (493) are arranged on the stable arc plate (491). A fixed arc plate is arranged at one end of the stable connection frame (493) far from the welding base frame (130). A number of stable fan frames are arranged on the stable connection frame (493). A stable mechanism (600) is arranged on the stable connection frame (493). The structure of the stable mechanism (600) is basically the same as that of the stable fixing mechanism (200).

7. An auxiliary device for pipe welding and installation based on arc frame splicing according to claim 1, characterized in that: The guiding and traction component (500) includes a traction base plate (510) arranged at one end of the wide-angle arc frame (110) far from the spliced arc frame (120). A traction base frame (520) is arranged on the traction base plate (510). A traction roller shaft (530) is arranged on the traction base frame (520). A traction winch (540) is arranged on the traction roller shaft (530). A traction motor (550) cooperating with the traction roller shaft (530) is arranged on the traction base frame (520). A traction cable (560) is arranged on the traction winch (540). A plurality of groups of guiding and leading frames (570) are arranged on the wide-angle arc frame (110). A guiding roller (580) cooperating with a towing hinge rope is arranged on the guiding and leading frame (570). The towing hinge rope is connected to the stable arc frame (490) via the guiding roller (580).

8. The auxiliary device for pipe welding and installation based on splicing of arc frames according to claim 1, characterized in that: The welding base frame (130) includes a welding arc frame (121). A stable triangular frame is arranged on the welding arc frame (121). A welding base table (122) cooperating with the welding mechanism is arranged on the welding arc frame. The welding mechanism includes a welding assembly for completing welding work. A gas cylinder support is arranged on the wide-angle arc frame (110) and / or the splicing arc frame (120). A welding protective gas supply assembly cooperating with the welding assembly is arranged on the gas cylinder support. A welding torch adjusting assembly for precisely adjusting the position of the welding torch is arranged on the welding support. A weld seam tracking assembly is arranged on the welding support. And an electric control system is arranged on the welding support.

9. The installation method of the pipeline welding and installation auxiliary device according to claim 1, comprising the following steps: S1: Install the wide-angle arc frame on the outer wall of the pipeline to be welded. Place the wide-angle arc frame outside the pipeline and initially fix it through the stable fixing mechanism. Subsequently, drive the wide-angle arc frame to move along the pipeline axis to the welding starting position by means of the axial movement assembly, and adjust the wide-angle arc frame to a suitable welding angle through the circumferential rotation assembly. Finally, use the stable fixing mechanism again for final fixation; S2: Connect the splicing arc frame to the wide-angle arc frame, precisely adjust the position and stably connect them through the telescopic connection assembly and the guiding and towing assembly to form a complete ring structure; S3: Install the welding base frame on the side of the splicing arc frame away from the wide-angle arc frame, and adjust the stable arc frame to the welding position; S4: Start the welding mechanism to weld the pipeline weld seam, and realize full circumferential automatic welding through the cooperation of the axial movement assembly and the circumferential rotation assembly during the welding process; S5: After welding is completed, stop the welding mechanism, adjust the axial movement assembly to move the wide-angle arc frame away from the weld area, and release the stable fixing mechanism to disconnect the wide-angle arc frame from the pipeline; S6: Dismantle the splicing arc frame and the welding base frame, and remove the equipment.

10. The installation method of the pipeline welding and installation auxiliary device according to claim 9, characterized in that: In step S1, when initially fixing or finally fixing through the stable fixing mechanism, it includes that an air inflation pump inflates the ring pressing air bag unit to make the air bag fit the outer wall of the pipeline, and at the same time, the flexible clamping assembly and the stable supporting assembly perform flexible constraint and stable support on the pipeline.

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