Movable type flat plate automatic welding system

Abstract

The invention provides a movable type flat plate automatic welding system. The movable type flat plate automatic welding system comprises a steel structure platform, at least one movable type welding rail combination device and a movable type wire feeding control system. The automatic gas metal arc welding device has the following beneficial effects that existing manual or semi-automatic welding can be replaced, a narrow field welding space of a large steel structure and automatic gas metal arc welding of a short welding seam are achieved, and the welding quality and efficiency of the welding seam are improved; the welding machine head and rail integration, lightweight and remote visual welding tracking design is adopted, the structure is compact, moving, mounting and positioning are portable, rapid and accurate, the welding operation auxiliary time is shortened, the labor operation environment and intensity of welders are improved and reduced, the field welding operation HSE level is improved, better operation and use performance is achieved, and the welding machine head is suitable for popularization and application. And the on-site welding operation quality and efficiency are further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of offshore oil platform structure welding technology, in particular to a mobile flat automatic welding system. BACKGROUND

[0002] In the offshore construction of offshore oil platform blocks, jacket structures and other marine steel structures, there are a large number of non-main structure steel plate welding such as jacket anti-sinking plate, platform plate, and room and equipment room floor. The main welding is butt welding of medium-thin flat plates below 20mm on site, which accounts for about 10% to 15% of platform construction, and the welding workload is large. Moreover, there are limited welding space on site, numerous equipment components, short welds, and frequent welding position movement.

[0003] Since the existing butt flat field automatic welding equipment is mainly for manual or semi-automatic welding of long straight welds of medium-thick plates, it is mainly composed of long straight rigid or semi-rigid tracks and welding trolleys walking along the tracks. In order to adapt to long weld continuous welding and large on-site flat groove machining and assembly deviation, the track and trolley are generally large and heavy, requiring a large working space. In order to ensure welding quality and efficiency, the track needs to be installed as accurately as possible along the weld, and then the trolley is installed on the track. The welder works in a kneeling or squatting position or even a lying position, manually tracks the arc and controls the trolley welding. This method is not suitable for short welds, is not convenient to move and install, has a long auxiliary installation time, has a large labor intensity, and has poor labor conditions. In addition, in order to control the welding deformation, the medium-thickness plate backing weld and the thin plate welding need to use a segmented welding, segmented welding, skip welding, alternating welding or segmented symmetric welding process for 600 to 1000mm. Therefore, the non-main structure steel plate welding of the existing offshore steel structure still uses manual and semi-automatic welding methods.

[0004] In order to solve the problem of manual and semi-automatic welding of non-main structure steel plates of the existing offshore steel structure, which has a large labor intensity, low welding efficiency and unstable welding quality, and restricts the overall construction efficiency and quality of the offshore platform, an automatic welding system that meets the needs needs to be developed. SUMMARY

[0005] Therefore, the present application provides a mobile flat automatic welding system, which comprises:

[0006] The steel structure platform is the main body to be welded in offshore oil operations.

[0007] At least one mobile rail welding assembly device, comprising a guide rail and a welding torch and a remote weld seam visual tracking camera arranged on the guide rail, the guide rail can be fixed on the steel structure platform to be welded, the welding torch can move to weld the position to be welded, and the remote weld seam visual tracking camera can collect images of the end of the welding torch to form full tracking and positioning of the welding torch position.

[0008] A mobile wire feeding control system is arranged on the steel structure platform and electrically connected with the mobile rail welding assembly device, which can provide welding wire for the welding of the welding torch and control the collected image data of the welding torch.

[0009] Further, the bottom of the two ends of the guide rail is provided with a moving system, which can drive the guide rail to move on the steel structure platform.

[0010] Preferably, the moving system is a wheeled moving structure.

[0011] Preferably, the wheeled moving structure is a universal wheel.

[0012] Further, the bottom of the two ends of the guide rail is also provided with an adsorption fixing system, which can be adsorbed on the welding base material and fixed on the welding position.

[0013] Further, the bottom of the two ends of the guide rail is also provided with a positioning mechanism, which can be clamped on or opposite to the center of the welding gap groove to achieve accurate positioning.

[0014] Further, the guide rail is provided with an adjusting mechanism capable of sliding relative to the guide rail, and the welding torch and the remote weld seam visual tracking camera are arranged on the adjusting mechanism, and the remote weld seam visual tracking camera can collect images of the end of the welding torch to form full tracking and positioning of the welding torch position.

[0015] Further, the mobile wire feeding control system comprises a wire feeding control frame, a wire feeder and a system electrical control system, the wire feeding control frame can be movably arranged on the steel structure platform, the wire feeder and the system electrical control system are arranged on the wire feeding control frame and can move with the wire feeding control frame, the wire feeder is connected with the system electrical control system by cable, and the system electrical control system is connected with an alternating current power supply.

[0016] Preferably, the alternating current power supply is a single-phase 220V alternating current power supply.

[0017] Further, the wire feeding control frame is also provided with a welding control screen, which is connected with the system electrical control system by cable, can collect and analyze the data collected by the remote weld seam visual tracking camera.

[0018] Further, the wire feeding control frame bottom is equipped with a wheeled moving foot.

[0019] Further, the wheeled moving foot is preferably a universal wheel.

[0020] Further, the welding gun and the wire feeder are connected through a welding gun wire, and the mobile welding rail combination device and the system electrical control system are connected through a control data cable.

[0021] Further, the mobile wire feeding control system is also equipped with a welding power supply, which is connected to the mobile wire feeding control system through a long welding cable and a long gas pipe, and a welding ground wire is connected between the welding power supply and the steel structure platform.

[0022] The mobile flat automatic welding system provided by the application has the following advantages: replacing manual or semi-automatic welding, realizing gas shielded automatic welding of large steel structures in narrow welding spaces and short welds, improving the quality and efficiency of weld welding; adopting welding head and track integration, lightweight and remote visual welding tracking design, compact structure, mobile installation positioning is light, fast, accurate, shortens welding operation auxiliary time, improves and reduces the labor operation environment and intensity of welders, improves the HSE level of on-site welding operation, has better operation and use performance, and further promotes the improvement of on-site welding operation quality and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Moreover, like reference numerals designate like parts throughout the several views in the drawings. In the drawings:

[0024] Figure 1 The overall structure of the automatic welding system provided by the embodiment of the application Figure 1 ;

[0025] Figure 2 The overall structure of the automatic welding system provided by the embodiment of the application Figure 2 ;

[0026] Figure 3 The structure diagram of the mobile welding rail combination device provided by the embodiment of the application

[0027] Figure 4 The structure diagram of the mobile wire feeding control system provided by the embodiment of the application

[0028] In the figure, 1, steel structure platform, 2, mobile welding rail combination device, 3, mobile wire feeding control system, 4, welder, 5, welding power supply, 6, welding gun wire, 7, control data cable, 8, AC power supply;

[0029] 21, guide rail, 22, welding gun, 23, remote weld seam visual tracking camera, 24, mobile system, 25, adsorption fixing system, 26, positioning mechanism, 27, adjusting mechanism, 31, wire feeding control frame, 32, wire feeder, 33, system electrical control system, 34, welding control screen, 35, wheeled mobile foot, 51, long welding cable, 52, long gas pipe, 53, welding ground wire. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0031] Reference Figures 1-4 As shown, it is a mobile flat automatic welding system disclosed by the embodiment of the present disclosure, comprising a steel structure platform 1, at least one mobile welding rail combination device 2 and a mobile wire feeding control system 3. The steel structure platform 1 is a main body to be welded in offshore oil operation. A plurality of mobile welding rail combination devices 2 comprise a guide rail 21, a welding gun 22 and a remote weld seam visual tracking camera 23 which can slide on the guide rail 21. The guide rail 21 can be fixed at the position to be welded on the steel structure platform 1. The welding gun 22 can move and weld at the position to be welded. The remote weld seam visual tracking camera 23 can collect images at the end of the welding gun 22, forming full tracking and positioning of the welding gun 22 position. The mobile wire feeding control system 3 is arranged on the steel structure platform 1 and electrically connected with the mobile welding rail combination device 2. It can provide welding wire for the welding of the welding gun 22 and control the collected welding gun image data.

[0032] Specifically, in the mobile wire feeding control system, the wire feeder not only provides welding wire, but also is responsible for the control and execution of the welding wire feeding speed according to welding feedback or welding instructions.

[0033] The collected image is the image of the intersection area of the welding wire at the end of the welding gun and the groove. Before welding, the image can be used to determine and adjust the length of the welding wire extending from the end of the welding gun, the relative position of the end of the welding wire and the groove, and the high-temperature welding pool state of the end of the welding wire, the length of the welding wire extending from the end of the welding gun, and the real-time relative position of the welding pool and the groove during welding.

[0034] The remote welding seam visual tracking camera directly collects images of the high-temperature welding pool at the end of the welding wire and the groove position for automatic welding seam tracking and control, which is an important means and feature of the present application for automatic welding of large steel structures in complex assembly conditions and large deviations in open site field, and is different from the current method of automatic welding equipment, which mainly uses the groove position information collected at a certain distance in front of the welding gun moving direction to judge whether there is tracking deviation and perform tracking control.

[0035] The collected image is also used for remote tracking of the welding seam and control of the welding gun, without the need to observe the arc tracking and control the welding gun in close proximity to the high-temperature and high-smoke environment, thereby improving the welding labor conditions and intensity.

[0036] The mobile wire feeding control system is an electrical monitoring and control system including software and hardware, which functions to coordinate and control the mobile welding rail combination device, the wire feeder and the welding power source. After the collected image is displayed and analyzed, the mobile welding rail combination device, the wire feeder and the welding power source are manually or automatically controlled to coordinate and work, thereby realizing high-quality and efficient automatic welding on site, rather than controlling the image data of the welding gun.

[0037] Referring to Figures 2-3 , the bottom of the guide rail 21 is provided with a moving system 24, which can drive the guide rail 21 to move on the steel structure platform 1. In this embodiment, the moving system 24 is a wheeled moving structure, preferably a universal wheel.

[0038] Referring to Figure 3 , the bottom of the guide rail 21 is also provided with an adsorption fixing system 25, which can be adsorbed on the welding base material and fixed at the welding position.

[0039] Continuing to refer to Figure 3 , the bottom of the guide rail 21 is also provided with a positioning mechanism 26, which can be clamped or directly opposite to the center of the gap groove to be welded, thereby achieving precise positioning.

[0040] Referring to Figure 3As shown, the guide rail 21 is provided with an adjusting mechanism 27 capable of sliding relative to the guide rail 21, and the welding gun 22 and the remote weld seam visual tracking camera 23 are arranged on the adjusting mechanism 27. The remote weld seam visual tracking camera 23 is capable of collecting images of the end of the welding gun 22, thereby forming full tracking positioning of the position of the welding gun 22.

[0041] Referring to Figure 2 , 4 As shown, the mobile wire feeding control system 3 comprises a wire feeding control frame 31, a wire feeder 32 and a system electrical control system 33. The wire feeding control frame 31 is arranged on the steel structure platform 1 and is capable of moving. The wire feeder 32 and the system electrical control system 33 are arranged on the wire feeding control frame 31 and are capable of moving with the wire feeding control frame 31. The wire feeder 32 is connected to the system electrical control system 33 by a cable. The system electrical control system 33 is connected to an alternating current power supply 8. The alternating current power supply 8 is a single-phase 220V alternating current power supply.

[0042] Continuing to refer to Figure 2 , 4 As shown, the wire feeding control frame 31 is further provided with a welding control screen 34 connected to the system electrical control system 33 by a cable. The welding control screen 34 is capable of collecting, summarizing and analyzing the data collected by the remote weld seam visual tracking camera 23. The welding control screen is mainly the input / output interface of the system and is mainly used for displaying the collected images, displaying, setting, inputting and outputting the welding parameters. The summary and analysis of the collected data and images are mainly completed by the system electrical control system.

[0043] Referring to Figure 4 As shown in the embodiment, the wire feeding control frame 31 is provided with a wheeled moving foot 35 at the bottom. The wheeled moving foot 35 is preferably a universal wheel.

[0044] Referring to Figures 1-2 As shown, the welding gun 22 is connected to the wire feeder 32 by a welding gun handle wire 6. The mobile welding rail combination device 2 is connected to the system electrical control system 33 by a control data cable 7.

[0045] Referring to Figures 1-2 As shown, the mobile wire feeding control system 3 is further provided with a welding power supply 5 connected to the mobile wire feeding control system 3 by a long welding cable 51 and a long gas pipe 52. The welding power supply 5 is connected to the steel structure platform 1 by a welding ground wire 53.

[0046] In a preferred embodiment of the present application, continuing to refer to Figures 1-4As shown, the mobile rail welding combination device 2 uses short rigid straight rails as guide rails 21 and integrates the welding gun control mechanism with lightweight design; the welding gun (11) is centrally installed on the welding gun adjusting mechanism 27 that can move along the guide rail 21, and is located in the middle and lower part of the front side; the middle and lower part of the rear side of the welding gun adjusting mechanism 27 is provided with a remote weld visual tracking camera 23, which has two recording modes of ordinary camera observation and arc molten pool observation; the bottom of the guide rail 21 is designed with a four-wheel moving system 24 and a device adsorption fixing system 25; the middle and bottom of both ends of the guide rail 21 are respectively provided with a positioning mechanism 26;

[0047] The mobile wire feeding control system 3 contains a mobile wire feeding control frame 31 with a four-wheel structure; and a wire feeder 32 and a system electrical control system 33 connected with each other by cables fixed thereon; and a welding control screen 34 with a display screen and control knob switch connected with the system electrical control system 33 by a cable, which can be handheld or positioned on the wire feeding control frame 31;

[0048] The welding power source 5 adopts a gas shielded arc welding power source, and a long welding cable 51 and a long gas pipe 52 with a carrier wave are used to connect the welding power source 5 and the wire feeder 32; a welding gun handle wire 6 with a gas pipe is used to connect the welding gun 22 and the wire feeder 32; a control data cable 7 is used to connect the mobile rail welding combination device 2 and the system electrical control system 33, and the system electrical control system 33 is connected with a single-phase 220V alternating current power source, forming a complete mobile flat automatic welding system; the welding power source 5 is positioned and installed near the power source, and is connected with the power source and the shielding gas source.

[0049] In specific application, continuing to refer to Figures 1-4 As shown, the mobile rail welding combination device 2 and the mobile wire feeding control system 3 move on the steel structure platform 1 according to the change of the welding position; the movement of the two between the working layers adopts hoisting or carrying mode; the movement of the two on a working surface uses the four-wheel moving system 24 of the mobile rail welding combination device 2 and the four-wheel mobile wire feeding control frame 31 of the mobile wire feeding control system 3, and adopts two-wheel (one end is raised, two wheels are on the ground, and two wheels are in the air) or four-wheel (four wheels are on the ground) mode to move lightly and quickly;

[0050] The mobile rail welding combination device 2 that has moved to the welding position is placed on the weld with both ends raised, and the device positioning mechanisms 26 at both ends are clamped or aligned with the center of the weld bevel, so as to realize accurate positioning; the device adsorption fixing system 25 adsorbs the welding base material to fix it, and the positioning and installation of the mobile rail welding combination device 2 are completed;

[0051] The welder 4 is located beside the mobile wire feeding control system 3, and remotely adjusts the welding torch 22 and tracks the weld seam in an artificial or automatic manner according to the end image of the welding torch 22 collected by the remote weld seam visual tracking camera 23 and displayed in the welding control screen 34, so as to perform automatic welding; the end image of the welding torch 22 is collected in an arc molten pool observation recording mode during the welding process, and the rest is collected in a common recording mode.

[0052] The working principle of the mobile flat automatic welding system of the present application is shown in Figures 1-4

[0053] According to the welding object, the working environment and requirements, the flat automatic welding system of the present application adopts the architecture of a gas shielded welding power supply + long welding cable (the maximum working voltage is less than or equal to 70V of direct current) and a gas pipe + a mobile welding machine head guide rail and a wire feeding control system, which is installed near the power supply, so as to adapt to the welding requirements of frequent movement of large steel structure flat in various positions such as horizontal, vertical and inclined positions; and the system of the present application avoids moving with a high-voltage three-phase 380V long power cable, thereby improving the safety of the system.

[0054] The mobile welding rail combination device adopts an integrated design of a welding torch in the middle, a short-distance rigid straight guide rail and a welding torch control mechanism, so as to be more suitable for flat short weld seam welding; the number of parts of the machine head guide rail is reduced, and the weight of the device is reduced; the structure is more compact, and the space requirement for operation is reduced, so as to adapt to welding in a smaller limited space on site, and facilitate frequent movement and installation; the on-site installation of the welding head and the guide rail is omitted, the auxiliary installation operation time is shortened, and the labor intensity is reduced; in order to further reduce the operation space required by the present application, improve the welding operation environment, reduce the welding labor intensity, and improve the HSE level of on-site welding, the present application designs and invents a patented remote weld seam visual tracking system, and a remote weld seam visual tracking camera is arranged at the welding torch adjusting mechanism of the device, so that the welder does not need to track the weld seam at a close distance, the welding operation space requirement for manual and automatic welding close tracking operation is omitted, the welder can operate in a standing or sitting position away from the arc molten pool area with arc light, high temperature and smoke dust hazards; in order to further increase the portability and speed of movement, a four-wheel mobile system is designed for the device, and the existing automatic welding head guide rail movement is changed into integrated push-pull rolling movement on the same working surface; in order to ensure the stability of the lightweight device of the present application during operation and the welding requirements of various positions such as horizontal, vertical and inclined positions, a device adsorption fixing system is designed for the device, so that the device can be adsorbed and fixed on the weld base material and stably positioned at various welding positions; in order to ensure the quickness and accuracy of positioning and installation of the device of the present application, a device positioning mechanism with the middle part of the two ends is designed, and the device positioning mechanism at the two ends is clamped or aligned with the center of the weld seam groove, so as to ensure the accurate positioning of the device.

[0055] ​In order to adapt to frequent changes of welding positions, the system of the present application integrates the wire feeder, the system electrical general control system and the welding control screen on the four-wheel mobile wire feeding control frame to form a mobile wire feeding control system, which carries the parts of the existing automatic welding equipment and changes them into fast and light wheeled integral push-pull movement; the top of the four-wheel mobile wire feeding control frame also serves as the installation and operation platform of the welding control screen; in addition, when the changes of welding positions in a working surface are far apart, the four-wheel mobile wire feeding control frame can also serve as the carrier of the mobile rail welding combined device of the present application, and the mobile rail welding combined device is placed on the four-wheel mobile wire feeding control frame to move together fast and light.

[0056] The two-wheel or four-wheel mobile mode of the mobile rail welding combined device and the mobile wire feeding control system of the light-weight design is similar to the moving mode and principle of the wheeled pull rod luggage case, and the four-wheel mobile mode can be used for short-distance flat working surfaces, and the two-wheel mobile mode can be used for long-distance uneven working surfaces.

[0057] The remote welding seam visual tracking camera and the welding control screen of the present application constitute a patented remote welding seam visual acquisition system, and the special video analysis control software can realize automatic tracking welding. Since the groove machining of the on-site steel plate and the gap deviation of the assembly are relatively large, during gas shielded welding, especially during root welding, the welding tracking not only tracks the welding seam track, but also observes the dry elongation, the assembly gap and the misalignment, the molten pool state, the relative position and state of the molten pool arc welding seam, and timely adjusts the welding parameters and the arc position to ensure the welding quality. Therefore, the welding tracking system of the present application adopts the open arc visual tracking mode. Since during non-welding, the image acquisition of the welding wire dry elongation, the relative position of the welding gun groove and the welding seam forming only needs the ordinary camera mode which can process the image with a signal-to-noise ratio of 50-60 dB, while during welding, the signal-to-noise ratio of the arc molten pool image is as high as 120-140 dB, and the special camera mode and software processing are needed to acquire, therefore, the welding tracking system of the present application is designed to have two camera recording modes of ordinary camera observation and arc molten pool observation, and the arc molten pool observation camera recording mode is adopted during the welding process, and the ordinary camera recording mode is adopted during non-welding.

[0058] In another preferred embodiment of the present application, as shown in Figures 1-2 The whole mobile flat automatic welding system is composed of one set of mobile rail welding combined device 2, one set of mobile wire feeding control system 3, one submerged arc welding power source 5, one 50-meter-long long welding cable 51 and one 50-meter-long long gas pipe 52, one 5-meter-long welding gun handle cable 6 and one 8-meter-long control data cable 7.

[0059] Referring to Figure 3The mobile rail welding combined device 2 adopts 1.3 m long short-distance rigid straight rails as guide rails 21 and an integrated light-weight design of a welding gun control mechanism; a gas shielded welding gun 22 is arranged in the middle and is installed on a welding gun adjusting mechanism 27 which can move along the guide rails 21 (can be adjusted in height and left and right swing) and is arranged at the middle lower part of the front side; a remote welding seam visual tracking camera 23 which can be adjusted in height and front and back and positioned is arranged at the middle lower part of the rear side of the welding gun adjusting mechanism 27 and has two kinds of camera recording modes of ordinary camera observation and arc molten pool observation; four-wheel moving systems 24 with brake rollers and adsorption fixing systems 25 with switch magnetic bases are arranged at the four corners of the two ends of the bottom of the guide rails 21; and a lifting adjustable roller type positioning mechanism 26 is arranged at the middle bottom of each of the two ends of the guide rails 21.

[0060] Referring to Figure 4 The mobile rail welding combined device 2 adopts 1.3 m long short-distance rigid straight rails as guide rails 21 and an integrated light-weight design of a welding gun control mechanism; a gas shielded welding gun 22 is arranged in the middle and is installed on a welding gun adjusting mechanism 27 which can move along the guide rails 21 (can be adjusted in height and left and right swing) and is arranged at the middle lower part of the front side; a remote welding seam visual tracking camera 23 which can be adjusted in height and front and back and positioned is arranged at the middle lower part of the rear side of the welding gun adjusting mechanism 27 and has two kinds of camera recording modes of ordinary camera observation and arc molten pool observation; four-wheel moving systems 24 with brake rollers and adsorption fixing systems 25 with switch magnetic bases are arranged at the four corners of the two ends of the bottom of the guide rails 21; and a lifting adjustable roller type positioning mechanism 26 is arranged at the middle bottom of each of the two ends of the guide rails 21.

[0061] Referring to Figure 2 The mobile rail welding combined device 2 adopts 1.3 m long short-distance rigid straight rails as guide rails 21 and an integrated light-weight design of a welding gun control mechanism; a gas shielded welding gun 22 is arranged in the middle and is installed on a welding gun adjusting mechanism 27 which can move along the guide rails 21 (can be adjusted in height and left and right swing) and is arranged at the middle lower part of the front side; a remote welding seam visual tracking camera 23 which can be adjusted in height and front and back and positioned is arranged at the middle lower part of the rear side of the welding gun adjusting mechanism 27 and has two kinds of camera recording modes of ordinary camera observation and arc molten pool observation; four-wheel moving systems 24 with brake rollers and adsorption fixing systems 25 with switch magnetic bases are arranged at the four corners of the two ends of the bottom of the guide rails 21; and a lifting adjustable roller type positioning mechanism 26 is arranged at the middle bottom of each of the two ends of the guide rails 21.

[0062] The following briefly describes the installation and working process of the mobile plate automatic welding system of the present application, referring to the accompanying Figures 1-4 :

[0063] The welding power source 5 is placed at the power source and the protective gas source, and is connected with the three-phase four-wire 380V power source and the CO2 protective gas source; the long welding cable 51 and the long gas pipe 52 are used to connect the positive output and the protective gas output of the welding power source 5 with the welding wire feeder 32 of the mobile wire feeding control system 3; the negative output of the welding power source 5 is connected with the (marine) steel structure platform 1 through a welding ground wire 53;

[0064] The mobile rail welding assembly 2, which has been connected with the mobile wire feeding control system 3 by the welding gun 6 and the control data cable 7 and adjusted, is fixedly arranged on the four-wheel mobile wire feeding control frame 31 of the mobile wire feeding control system 3, and is carried or hoisted together to the welding operation layer of the offshore steel structure platform 1;

[0065] The four-wheel mobile wire feeding control frame 31 is pushed and pulled on the operation surface of the welding operation layer in a two-wheel or four-wheel manner, and the two-wheel mobile wire feeding control frame 31 is moved to the welding position; the system electrical master control system 33 is connected with the nearby mobile single-phase alternating current 220V power supply 8;

[0066] The mobile rail welding assembly 2 is taken off from the four-wheel mobile wire feeding control frame 31 and placed astride on the weld to be welded, and is slightly moved by pushing and pulling or is accurately moved by lifting one end, so that the device positioning mechanisms 26 at both ends of the guide rail 21 are clamped in the weld bevel, and the accurate positioning of the mobile rail welding assembly 2 is completed;

[0067] The brakes of the four-wheel mobile system 24 are pressed, and the four switch magnetic bases of the adsorption fixing system 25 are rotated, so that the mobile rail welding assembly 2 is stably adsorbed and fixed on the welded steel plate or the welded base material;

[0068] The welder 4 stands beside the mobile wire feeding control system 3, and starts to control the welding electrical system of the present application through the welding control screen 34 to perform welding; before welding, the remote weld visual tracking camera 23 is set to a normal recording mode, and the position of the welding gun 22 and the weld bevel is observed through the display screen of the welding control screen 34; the welding gun adjusting mechanism 27 is controlled and adjusted through the control knobs and switches of the welding control screen 34 to move the welding gun 22, so that the welding gun 22 is moved to the welding starting point, is aligned with the bevel and is adjusted to an appropriate height, so as to ensure the wire stickout and other pre-welding detection and adjustment work; during root welding, the welding tracking mode is set to a manual remote tracking mode, and the remote weld visual tracking camera 23 is set to an arc molten pool observation recording mode; after starting welding, the relative position and state of the molten pool, the arc and the weld bevel, the wire stickout change, the gap between the two groups and the edge deviation change are observed through the display screen of the welding control screen 34, and the welding parameters and the welding gun position are timely adjusted remotely until the welding is stopped when the set welding length is reached; during the weld filling and surface welding, the welding tracking mode can be set to an automatic remote tracking mode, and the remote weld visual tracking camera 23 is still set to an arc molten pool observation recording mode, so that the welding gun can be automatically adjusted in the left and right positions according to the weld track during the welding process, and other observation tracking and adjustment modes are the same as those of the root welding; after welding, the remote weld visual tracking camera 23 is set to a normal recording mode, and the adjusting mechanism 27 of the welding gun of the welding control screen 34 is moved along the weld to drive the remote weld visual tracking camera 23 to observe and record the whole weld forming condition, so that the weld appearance inspection and record are completed;

[0069] When a welding seam is welded, the brakes of the four-wheel moving system 24 are released, the four switch magnets of the rotating device adsorption fixing system 25 are closed, and the brakes of the four wheels of the four-wheel moving system 24 are released; then the mobile rail welding combination device 2 can be freely moved;

[0070] When a fillet weld is welded, if the next fillet weld is adjacent or close to the current one and the working surface is relatively flat, the mobile rail welding combination device 2 and the mobile wire feeding control system 3 can be directly pushed and pulled to move to the welding position in a four-wheel rolling manner, and then the above-mentioned installation and positioning welding can be performed; if the working surface is not flat or the distance between the two fillet welds is relatively far, one end of the mobile rail welding combination device 2 or one side of the mobile wire feeding control system 3 can be lifted, and then the two can be pulled or pushed to the welding position in a two-wheel rolling manner, and then the installation and positioning welding can be performed; if the next fillet weld is far away from the current one, the mobile rail welding combination device 2 can be fixed on the mobile wire feeding control system 3, and then the mobile rail welding combination device 2 can be moved to the welding position in a four-wheel rolling manner according to the flatness of the working surface, which is similar to the moving manner of a luggage case with a wheel.

[0071] In summary, the mobile flat automatic welding system provided by the embodiment of the present application has the following beneficial technical effects: the present application can replace manual or semi-automatic welding, realize gas shielded automatic welding of a short welding seam in a narrow welding space of a large steel structure, and improve the welding quality and efficiency; the welding head and the rail are integrated, light and designed for remote visual welding tracking, the structure is compact, the installation and positioning are convenient, fast, accurate, the welding auxiliary time is shortened, the labor intensity of welders is reduced, the HSE level of welding operation is improved, the operation and use performance are better, and the welding quality and efficiency are further improved.

[0072] It should be noted that, in the description of the present application, the terms indicating the direction or positional relationship of "up", "down", "left", "right", "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0073] In addition, it should be noted that, in the description of the present application, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A mobile automatic flatbed welding system, characterized in that, include: The steel structure platform is the main body to be welded during offshore oil operations. At least one mobile welding rail assembly includes a guide rail and a sliding welding torch and a remote weld seam visual tracking camera mounted thereon. The guide rail can be fixed to the welding position of the marine steel structure platform. The welding torch can move and weld at the welding position. The remote weld seam visual tracking camera can capture images of the end of the welding torch to form full-process tracking and positioning of the welding torch position. A mobile wire feeding control system is installed on the steel structure platform and electrically connected to the mobile welding rail assembly. It can provide welding wire for the welding torch and control the collected welding torch image data.

2. The mobile flatbed automatic welding system according to claim 1, characterized in that, The bottom of both ends of the guide rail is equipped with a moving system that can drive the guide rail to move on the steel structure platform; the moving system is a wheeled moving structure; preferably, it is a universal wheel.

3. The mobile flatbed automatic welding system according to claim 1, characterized in that, The bottom of both ends of the guide rail is also equipped with an adsorption and fixing system, which can adsorb onto the welding base material and fix it at the welding position.

4. The mobile flatbed automatic welding system according to claim 1, characterized in that, The bottom of both ends of the guide rail is also equipped with a positioning mechanism, which can be locked at or directly aligned with the center of the bevel of the weld seam to be welded, so as to achieve precise positioning.

5. The mobile flatbed automatic welding system according to any one of claims 1-4, characterized in that, The guide rail is equipped with an adjustment mechanism that can slide relative to it. The welding torch and the remote weld seam visual tracking camera are both mounted on the adjustment mechanism. The remote weld seam visual tracking camera can capture images of the end of the welding torch to form a full-process tracking and positioning of the welding torch position.

6. The mobile flatbed automatic welding system according to claim 1, characterized in that, The mobile wire feeding control system includes a wire feeding control frame, a wire feeder, and a system electrical control system. The wire feeding control frame can be movably mounted on the steel structure platform. The wire feeder and the system electrical control system are mounted on the wire feeding control frame and can move with the wire feeding control frame. The wire feeder is cable-connected to the system electrical control system, and the system electrical control system is connected to an AC power source.

7. The mobile flatbed automatic welding system according to claim 6, characterized in that, The wire feeding control frame is also equipped with a welding control screen, which is connected to the system's electrical control system via a cable. It can collect, summarize, and analyze the data collected by the remote weld seam visual tracking camera.

8. The mobile flatbed automatic welding system according to claim 6 or 7, characterized in that, The bottom of the wire feeding control frame is equipped with wheeled movable feet; preferably, the wheeled movable feet are omnidirectional wheels.

9. The mobile flat plate automatic welding system according to claim 6, characterized in that, The welding torch and the wire feeder are connected by a welding torch cable, and the mobile welding rail assembly is connected to the system's electrical control system by a control data cable.

10. The mobile flatbed automatic welding system according to claim 1, characterized in that, The mobile wire feeding control system is also equipped with a welding power source, which is connected to the mobile wire feeding control system via a long welding cable and a long air pipe. A welding ground wire is connected between the welding power source and the steel structure platform.

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