Electric arc welding device applied to electric power construction

Abstract

The invention relates to the technical field of welding equipment, in particular to an electric arc welding device applied to electric power construction, which comprises a rack seat and a fixing frame fixedly connected to the rack seat, and two groups of stripping type clamping mechanisms for centering and clamping an electric power pipe fitting are arranged on the fixing frame. The deslagging type welding mechanism is positioned between the two groups of stripping type clamping mechanisms and is used for carrying out girth welding on the two groups of electric power pipe fittings; the three groups of annular array clamping seats are matched with image positioning to realize accurate centering clamping of the electric pipe fitting, and the design of flat pushing feeding and sinking type rapid stripping is matched, so that no additional auxiliary process is needed, and automatic coherent operation is realized; and meanwhile, the electric arc welding gun and the tooth-shaped welding slag wheel are integrated, synchronous slag removal is achieved during welding, impact type transmission of the trapezoidal knocking block and the spring is combined, stubborn welding slag is efficiently removed, the welding precision and the welding seam quality are guaranteed, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to an arc welding device for use in power construction. Background Technology

[0002] Welding of power pipe fittings is one of the core procedures in power construction. It refers to the use of electric arc welding to firmly connect two or more power-specific pipe fittings (pipes, connectors, etc. used for power transmission and laying) to ensure that the welded joint has sufficient mechanical strength, electrical conductivity and corrosion resistance to meet the long-term safe and stable operation requirements of the power system. At the same time, it is necessary to strictly control the welding precision and avoid defects such as pipe fitting misalignment and weld slag residue.

[0003] For example, a welding machine for power construction, disclosed in CN115922027A, uses upper and lower clamping rings within a carrier ring to clamp and rotate pipe fittings. While this machine can automatically perform circumferential welding of two pipe fittings in conjunction with a welding torch, meeting basic welding requirements, the actual process involves horizontally inserting and removing the pipe fittings from the two sets of carrier rings after welding. This results in a disjointed and cumbersome loading and unloading process, reducing efficiency during batch welding. Furthermore, it cannot simultaneously remove welding slag during welding, requiring additional secondary fixing and slag removal, increasing process complexity and labor intensity, extending the overall welding cycle, and further reducing overall efficiency. This makes it unsuitable for the high-efficiency, batch welding requirements in power construction.

[0004] To address the aforementioned technical deficiencies, a solution is proposed that employs three sets of ring array clamping seats in conjunction with image positioning to achieve precise centering and clamping of power pipe fittings. Combined with a flat-push feeding and sinking-type rapid unloading design, no additional auxiliary processes are required, enabling automated continuous operation. Simultaneously, an arc welding torch and a toothed slag wheel are integrated for simultaneous slag removal during welding. Combined with the impact-type transmission of a trapezoidal striking block and springs, stubborn slag is efficiently removed, ensuring both welding accuracy and weld quality while improving processing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an arc welding device for power construction, in order to solve the aforementioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: an arc welding device for power construction, comprising a frame base and a fixed frame fixedly connected to the frame base. The fixed frame is provided with two sets of material-removing clamping mechanisms for centering and clamping power pipe fittings, and a slag-removing welding mechanism for circumferential welding of two sets of power pipe fittings located between the two sets of material-removing clamping mechanisms. The slag-removing welding mechanism includes a C-shaped rotating seat, a pushing seat is provided on the C-shaped rotating seat, and a mounting seat is hinged on the pushing seat. An arc welding gun is fixedly mounted on the mounting seat, and a slag wheel is rotatably mounted on the mounting seat.

[0007] Preferably, an electric push rod for driving the push seat to move is fixedly installed on the C-shaped rotary seat, and a guide rod that is slidably connected to the C-shaped rotary seat is fixedly connected to the push seat. An L-shaped plate is symmetrically slidably connected to the bottom of the mounting base and to both sides of the arc welding gun, and a vertical plate is symmetrically fixedly connected to both sides of the welding slag wheel. Limiting rollers are rotatably connected to both the L-shaped plate and the vertical plate, and a tension spring is fixedly connected between the transverse section of the L-shaped plate and the top of the mounting base.

[0008] Preferably, a rotating rod that is fixed to the welding slag wheel is rotatably connected between the vertical plates, a large bevel gear is fixedly connected to the rotating rod, a transmission rod is rotatably mounted on the vertical plates, and a small bevel gear that meshes with the large bevel gear is fixedly connected to the transmission rod. A motor that drives the transmission rod to rotate is fixed to the mounting base by bolts, and the welding slag wheel has a toothed structure.

[0009] Preferably, a spline shaft is fixedly installed at the output end of the motor, and a limit ring is fixedly connected to the spline shaft, and a drive disk is slidably connected thereto. Trapezoidal striking blocks are symmetrically fixedly connected to both sides of the bottom of the drive disk, a driven disk is fixedly connected to the top of the transmission rod, and trapezoidal striking blocks are symmetrically fixedly connected to both sides of the top of the driven disk. A spring is fixedly connected between the limit ring and the drive disk.

[0010] Preferably, the C-shaped rotary base has C-shaped seats symmetrically slidably connected on both sides, and the two sets of C-shaped seats are fixedly connected by multiple U-shaped frames. The fixed frame is fixedly connected to the corresponding U-shaped frame. A rotating shaft is rotatably mounted on each of the two sets of U-shaped frames, and a transmission gear and a synchronous pulley are fixedly mounted on the rotating shaft. An arc-shaped rack that meshes with the transmission gear is fixedly connected to the C-shaped rotary base. The synchronous pulleys are rotatably connected by a synchronous belt. A second motor that drives the corresponding rotating shaft to rotate is fixed to the U-shaped frame by bolts.

[0011] Preferably, the material removal clamping mechanism includes two sets of C-shaped plates fixedly connected to the fixed frame, and three sets of clamping seats arranged in a circular array between the C-shaped plates. Multiple clamping rollers are rotatably mounted on the clamping seats at equal intervals along their length direction. A camera is embedded in the center of the bottom of the mounting seat.

[0012] Preferably, a screw and two sets of sliding rods are fixedly connected to the clamping seat, and a connecting plate that is slidably connected to the corresponding sliding rod is fixedly connected between the C-shaped plates, and a threaded sleeve that is threadedly connected to the screw is rotatably connected to the connecting plate.

[0013] Preferably, a toothed ring is fixedly connected to the threaded sleeve, and a set of toothed plates is slidably connected to a corresponding toothed ring, and the toothed plates are slidably connected to a corresponding connecting plate. A cylinder is fixedly connected to the C-shaped plate, and a C-shaped push plate is fixedly connected to the output end of the cylinder. The C-shaped push plate is fixedly connected to three sets of toothed plates.

[0014] The beneficial effects of this invention are as follows: (1) The present invention uses three sets of ring array clamping seats of the stripping clamping mechanism in conjunction with clamping rollers to realize synchronous centering clamping of power pipe fittings under the transmission of cylinder, toothed plate and threaded sleeve. Combined with real-time image acquisition of camera and precise positioning of external control system, it promotes precise contact and alignment of the two power pipe fittings, ensures the docking accuracy of ring welding and avoids welding defects caused by pipe fitting offset. At the same time, the flat push feeding and synchronous clamping sinking unloading design is adopted, so that when unloading, only the distance between the two sets of clamping seats below is greater than the diameter of the pipe fitting to achieve rapid unloading. The feeding and unloading actions do not require additional auxiliary positioning and disassembly procedures, forming a continuous automated operation process with welding and slag removal procedures, reducing the time spent on clamping and disassembling pipe fittings, and improving the overall operation efficiency of ring welding of pipe fittings in power construction.

[0015] (2) The present invention integrates the arc welding gun and the toothed slag wheel into the same mounting base. While the arc welding is realized by the circumferential rotation of the C-shaped rotating base, the slag at the weld seam is simultaneously rolled and scraped off, realizing the integrated operation of welding and slag removal, eliminating the separate slag removal process after welding, and improving the continuity of the overall welding process. For slag with excessive sintering adhesion, the spline shaft, the drive plate and the trapezoidal striking block on the driven plate are used to form an impact transmission by the elastic reset of the spring, which provides instantaneous impact force to the slag wheel, effectively breaking the adhesion of stubborn slag, thoroughly cleaning the weld seam slag, and avoiding the slag residue from affecting the connection strength and corrosion resistance of the weld seam. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings; Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the cooperation between the two sets of material stripping clamping mechanisms of the present invention; Figure 3 This is a schematic diagram of the material stripping clamping mechanism of the present invention; Figure 4 This is an installation diagram of the slag-removing welding mechanism of the present invention; Figure 5 This is a schematic diagram of the C-type base of the present invention; Figure 6 This is a partial structural schematic diagram of the slag-removing welding mechanism of the present invention; Figure 7 This is a partial structural schematic diagram of the slag-removing welding mechanism of the present invention from another perspective; Figure 8 This is a schematic diagram of the transmission for rotating the slag removal wheel of the present invention.

[0017] Legend: 1. Frame base; 11. Fixing frame; 12. C-type base; 13. U-type frame; 14. Transmission gear; 2. Material stripping clamping mechanism; 21. C-shaped plate; 22. Clamping seat; 23. Clamping roller; 24. Screw; 25. Connecting plate; 26. Threaded sleeve; 27. Gear ring; 28. Gear plate; 29. ​​Cylinder; 210. C-shaped push plate; 3. Slag-removing welding mechanism; 31. C-type rotary seat; 32. Push seat; 33. Mounting seat; 34. Arc welding torch; 35. Slag wheel; 36. Electric push rod; 37. L-shaped plate; 38. Vertical plate; 39. Limiting roller; 310. Tension spring; 311. Large bevel gear; 312. Small bevel gear; 313. Splined shaft; 314. Drive disc; 315. Trapezoidal striking block one; 316. Driven disc; 317. Trapezoidal striking block two; 318. Spring; 319. Arc-shaped rack. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figures 1-3 As shown, the problem of inconsistent loading and unloading processes, cumbersome operation, and reduced loading and unloading efficiency for batch welding of pipe fittings caused by the horizontal insertion and extraction method can be solved by the following solutions: This embodiment describes an arc welding device for power construction, comprising a frame base 1 with an inclined top for guiding the discharge of pipe fittings during unloading, and a fixed frame 11 fixedly connected to the frame base 1. The fixed frame 11 is provided with two sets of ejector clamping mechanisms 2 for centering and clamping power pipe fittings, and a slag removal welding mechanism 3 located between the two sets of ejector clamping mechanisms 2 for circumferential welding of two sets of power pipe fittings. The slag removal welding mechanism 3 includes a C-shaped rotating seat 31, a push seat 32 on the C-shaped rotating seat 31, and a mounting seat 33 hinged to the push seat 32. An arc welding gun 34 is fixedly mounted on the mounting seat 33, and a slag wheel 35 is rotatably mounted on the mounting seat 33.

[0020] C-shaped seats 12 are symmetrically slidably connected to both sides of the C-shaped swivel seat 31. The two sets of C-shaped seats 12 are fixedly connected by multiple U-shaped frames 13. The bottom openings of the C-shaped swivel seat 31 and the C-shaped seats 12 are used for the sinking unloading treatment after pipe welding. The fixed frame 11 is fixedly connected to the corresponding U-shaped frame 13. A rotating shaft is rotatably installed on each of the two sets of U-shaped frames 13, and a transmission gear 14 and a synchronous wheel are fixedly installed on the rotating shaft. An arc-shaped rack 319 that meshes with the transmission gear 14 is fixedly connected to the C-shaped swivel seat 31. The two sets of transmission gears 14 are set so that when one set of transmission gears 14 is separated from the arc-shaped rack 319, the other set of transmission gears 14 maintains the meshing state with the arc-shaped rack 319, thereby ensuring the circumferential rotational stability of the C-shaped swivel seat 31. The synchronous pulleys are connected by a synchronous belt. A second motor that drives the corresponding rotating shaft is fixed on the U-shaped frame 13 by bolts. The second motor drives the corresponding rotating shaft to carry the synchronous pulley and the transmission gear 14 to rotate. Another set of rotating shafts rotates in the same direction as the synchronous pulley and the synchronous belt. The transmission gear 14 of the two sets of meshing arc racks 319 drives the C-shaped rotating seat 31 to rotate slowly in the circumferential direction. During the rotation, the arc welding gun 34 performs arc circumferential welding on the joint end of the two power pipes.

[0021] The material removal clamping mechanism 2 includes two sets of C-shaped plates 21 fixedly connected to the fixed frame 11. The bottom openings of the C-shaped plates 21 and the C-shaped push plate 210 are used for the sinking unloading process after pipe welding. Three sets of clamping seats 22 arranged in a ring array are provided between the C-shaped plates 21. The power pipe is pushed into the interior of the two sets of C-shaped plates 21 by the external feeding equipment. The three sets of clamping seats 22 move synchronously relative to each other to center and clamp the power pipes of different sizes inserted into the material removal clamping mechanism 2, ensuring effective contact between the arc welding gun 34 and the pipe during the circumferential rotation, thereby completing the ring welding process without missing welds. In addition, multiple clamping rollers 23 are equidistantly mounted on the clamping seat 22 along its length direction. The clamping rollers 23 clamp the power pipe to avoid obstructing the horizontal insertion of the pipe. A camera is embedded at the bottom center of the mounting base 33. The camera at the bottom of the mounting base 33 captures real-time images of the advancing end position of the power pipe until the advancing end of the power pipe moves to the bottom center of the mounting base 33. The image data obtained by the image acquisition is transmitted to the controller in the external control system. When the image data matches the preset image data in the controller, the feeding of the power pipe stops, and another power pipe is simultaneously inserted into another set of material release clamping mechanism 2. This ensures that the mating ends of the two power pipes are precisely abutting directly below the arc welding gun 34, ensuring the mating accuracy of the circumferential welding and avoiding welding defects caused by pipe misalignment.

[0022] The clamping seat 22 is fixedly connected to a screw 24 and two sets of sliding rods. The C-shaped plates 21 are fixedly connected to a connecting plate 25 that is slidably connected to the corresponding sliding rod. The connecting plate 25 is rotatably connected to a threaded sleeve 26 that is threadedly connected to the screw 24. By rotating the threaded sleeve 26, combined with the threaded connection between the threaded sleeve 26 and the screw 24, and the limiting and guiding of the sliding rod on the clamping seat 22, the three sets of clamping seats 22 can move synchronously relative to each other or away from each other.

[0023] A toothed ring 27 is fixedly connected to the threaded sleeve 26. A toothed plate 28 that meshes with the corresponding toothed ring 27 is slidably connected to a set of C-shaped plates 21. The toothed plate 28 is slidably connected to the corresponding connecting plate 25. A cylinder 29 is fixedly connected to the C-shaped plate 21. A C-shaped push plate 210 is fixedly connected to the output end of the cylinder 29. The C-shaped push plate 210 is fixedly connected to the three sets of toothed plates 28. The cylinder 29 pushes the C-shaped push plate 210 to carry multiple toothed plates 28 to move towards the C-shaped plate 21. Through the meshing of the toothed plates 28 with the corresponding toothed rings 27, multiple threaded sleeves 26 are made to rotate synchronously, thereby achieving the centering and clamping of the pipe fitting. After the circumferential welding is completed, the second motor rotates in the opposite direction to drive the C-shaped rotating seat 31 to reset to the initial position. The two sets of cylinders 29 push the corresponding C-shaped push plate 210 away from the C-shaped plate 21, causing the multiple clamping seats 22 inside the C-shaped plate 21 to move synchronously away from each other until the distance between the two sets of clamping seats 22 at the bottom is greater than the diameter of the power pipe, causing the welded pipe to quickly sink and be unloaded from inside the unloading clamping mechanism 2 and the slag removal welding mechanism 3.

[0024] Example 2: Please refer to Figures 4-8 As shown, the problem of not being able to remove weld slag simultaneously during welding, requiring additional secondary fixing and slag removal, increasing process complexity and labor intensity, and extending the overall welding cycle, can be solved by the following solutions: In this embodiment, an electric push rod 36 for driving the push seat 32 to move is fixedly installed on the C-shaped rotary seat 31. A guide rod that is slidably connected to the C-shaped rotary seat 31 is fixedly connected to the push seat 32. An L-shaped plate 37 is symmetrically slidably connected to the bottom of the mounting seat 33 and to both sides of the arc welding gun 34. A vertical plate 38 is symmetrically fixedly connected to both sides of the welding slag wheel 35. A limiting roller 39 is rotatably connected to both the L-shaped plate 37 and the vertical plate 38. An anti-slip pad is embedded in the annular outer wall of the limiting roller 39 to increase the contact friction between the limiting roller 39 and the pipe fitting and prevent the pipe fitting from moving horizontally along its axial direction. A tension spring 310 is fixedly connected between the transverse section of the L-shaped plate 37 and the top of the mounting base 33. The electric push rod 36, in conjunction with the guide rod, pushes the push seat 32 to lower the mounting base 33, causing the limiting rollers 39 on the vertical plate 38 and the L-shaped plate 37 to abut against the side wall of the corresponding power pipe fitting. The push seat 32 continues to lower the mounting base 33. Combined with the fixed connection between the vertical plate 38 and the mounting base 33, and the sliding connection between the L-shaped plate 37 and the mounting base 33, relative sliding occurs between the L-shaped plate 37 and the mounting base 33, stretching the tension spring 310 and causing the push seat 32 and the mounting base 33 to deflect, so as to adjust the distance between the arc welding gun 34 and the pipe fitting and maintain the best welding effect.

[0025] A rotating rod is rotatably connected between the vertical plates 38 and fixed to the slag wheel 35. While the upper limit roller 39 of the vertical plate 38 contacts the pipe fitting and rotates circumferentially to perform circumferential welding, the slag wheel 35 contacts the slag on the pipe fitting. A large bevel gear 311 is fixedly connected to the rotating rod, and a transmission rod is rotatably installed on the vertical plate 38. A small bevel gear 312 that meshes with the large bevel gear 311 is fixedly connected to the transmission rod. A motor that drives the transmission rod to rotate is fixedly fixed to the mounting base 33 by bolts. The slag wheel 35 has a toothed structure. The motor drives the slag wheel 35 to rotate in a deceleration and torque-increasing manner through the small bevel gear 312 meshing with the large bevel gear 311. The toothed and rotating slag wheel 35 rolls and scrapes away the slag at the weld, realizing the integrated operation of welding and slag removal, eliminating the separate process of slag removal after welding, and improving the continuity of the overall welding process.

[0026] A spline shaft 313 is fixedly installed at the output end of motor 1, and a limit ring is fixedly connected to the spline shaft 313, and a drive disk 314 is slidably connected thereto. Trapezoidal striking blocks 315 are symmetrically fixedly connected to both sides of the bottom of the drive disk 314, and a driven disk 316 is fixedly connected to the top of the transmission rod. Trapezoidal striking blocks 317 are symmetrically fixedly connected to both sides of the top of the driven disk 316. Motor 1 drives the spline shaft 313 to rotate, and the spline shaft 313 carries the drive disk 314 to rotate. The trapezoidal striking blocks 315 on the drive disk 314 abut against the trapezoidal striking blocks 317 on the driven disk 316, thereby driving the transmission rod to rotate. The transmission rod meshes with the large bevel gear 311 through the small bevel gear 312 to cause the welding slag wheel 35 to rotate. A spring 318 is fixedly connected between the limiting ring and the drive disc 314. When the adhesion of local slag sintering is too strong and hinders the rotation of the slag wheel 35, the drive disc 314 is raised by the contact inclined surface between the trapezoidal striking block 1 315 and the trapezoidal striking block 2 317. The trapezoidal striking block 1 315 and the trapezoidal striking block 2 317 separate and then return to their original position under the compression force of the spring 318. This causes the trapezoidal striking block 1 315 to rotate circumferentially and strike the trapezoidal striking block 2 317, which causes the slag wheel 35 to provide impact force to the slag with excessive adhesion, effectively removing the slag.

[0027] Example 3: Please refer to Figures 1-8 As shown, the present invention also proposes a method for using an arc welding device applied in power construction, comprising the following steps: Step 1: An electrical conduit is pushed into the C-shaped push plate 210 end of the unloading clamping mechanism 2 by an external feeding device. The camera at the bottom of the mounting base 33 captures real-time images of the forward end position of the electrical conduit until the forward end of the electrical conduit moves to the center of the bottom of the mounting base 33. The image data obtained by the image acquisition is transmitted to the controller in the external control system. When it matches the preset image data in the controller, the feeding of the electrical conduit stops. At the same time, another electrical conduit is inserted into another set of unloading clamping mechanisms 2, causing the two electrical conduits to dock and collide. Step 2: Cylinder 29 pushes C-shaped push plate 210 to carry multiple toothed plates 28 to move towards C-shaped plate 21. Through the meshing of toothed plates 28 with corresponding toothed rings 27, multiple threaded sleeves 26 are rotated synchronously. Combined with the threaded connection between threaded sleeves 26 and screw 24, the three sets of clamping seats 22 move synchronously relative to each other, causing clamping rollers 23 to center and clamp the power pipes inserted into the material removal clamping mechanism 2. Step 3: The electric push rod 36 pushes the push seat 32 to carry the mounting seat 33 down, so that the limiting rollers 39 on the vertical plate 38 and the L-shaped plate 37 abut against the side wall of the corresponding power pipe fitting. The anti-slip pads embedded on the annular outer wall of the limiting rollers 39 prevent the pipe fitting from moving horizontally along its axis. Then the push seat 32 carries the mounting seat 33 down continuously. Combined with the fixed connection between the vertical plate 38 and the mounting seat 33, and the sliding connection between the L-shaped plate 37 and the mounting seat 33, the push seat 32 and the mounting seat 33 are deflected, that is, the distance between the arc welding gun 34 and the pipe fitting is adjusted to maintain the best welding effect. Step 4: The second motor drives the corresponding shaft to rotate, carrying the synchronous pulley and transmission gear 14 to rotate. Another set of shafts, combined with the synchronous pulley and synchronous belt, rotate in the same direction. The transmission gear 14 of the two sets of meshing arc-shaped racks 319 drives the C-shaped rotating seat 31 to rotate slowly in the circumferential direction. During the rotation, the arc welding gun 34 performs arc circumferential welding on the joint end of the two power pipes. During the circumferential welding process, the welding slag comes into contact with the welding slag wheel 35. The first motor drives the spline shaft 313 to rotate. The spline shaft 313 carries the drive disk 314 to rotate. The trapezoidal striking block 1 315 on the drive disk 314 abuts against the trapezoidal striking block 2 317 on the driven disk 316, driving the transmission rod to rotate. The transmission rod meshes with the large bevel gear 311 through the small bevel gear 312 to cause the welding slag wheel 35 to rotate. The welding slag on the weld is removed by contact with the toothed and rotating welding slag wheel 35. When excessive adhesion of localized weld slag hinders the rotation of the weld slag wheel 35, the drive disc 314 rises through the contact inclined surface between trapezoidal striking block 1 315 and trapezoidal striking block 2 317, causing trapezoidal striking block 1 315 and trapezoidal striking block 2 317 to separate. Then, under the compression force of spring 318, they return to their original position and descend, causing trapezoidal striking block 1 315 to rotate circumferentially and strike trapezoidal striking block 2 317, thus prompting the weld slag wheel 35 to provide impact force to the weld slag with excessive adhesion, effectively removing the weld slag. Step 5: After completing the circumferential welding and slag removal, the motor rotates in the opposite direction and the electric push rod 36 drives the push seat 32 to return to the initial position, carrying the mounting seat 33. The two sets of cylinders 29 push the corresponding C-shaped push plate 210 away from the C-shaped plate 21, causing the multiple clamping seats 22 inside the C-shaped plate 21 to move synchronously away from each other until the distance between the two sets of clamping seats 22 at the bottom is greater than the diameter of the power pipe. This causes the welded pipe to quickly sink and unload from the material removal clamping mechanism 2 and the slag removal welding mechanism 3. Then, the multiple clamping seats 22 inside the C-shaped plate 21 move synchronously relative to each other until the distance between the two sets of clamping seats 22 at the bottom is less than the diameter of the power pipe. Then, the next pipe can be pushed, centered, clamped, circumferentially welded, and slag removed in sequence.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An arc welding device for power construction, comprising a frame base (1) and a fixing frame (11) fixedly connected to the frame base (1), characterized in that, The fixed frame (11) is provided with two sets of material-removing clamping mechanisms (2) for centering and clamping the power pipe fittings, and a slag-removing welding mechanism (3) for circumferential welding of the two sets of power pipe fittings located between the two sets of material-removing clamping mechanisms (2). The slag-removing welding mechanism (3) includes a C-shaped rotating seat (31), a push seat (32) is provided on the C-shaped rotating seat (31), and a mounting seat (33) is hinged on the push seat (32). An arc welding gun (34) is fixedly installed on the mounting seat (33), and a welding slag wheel (35) is rotatably installed on the mounting seat (33).

2. The arc welding device for power construction according to claim 1, characterized in that, An electric push rod (36) for driving the push seat (32) to move is fixedly installed on the C-shaped rotary seat (31). A guide rod that is slidably connected to the C-shaped rotary seat (31) is fixedly connected to the push seat (32). An L-shaped plate (37) is symmetrically slidably connected to the bottom of the mounting seat (33) and to both sides of the arc welding gun (34). A vertical plate (38) is symmetrically fixedly connected to both sides of the slag wheel (35). A limit roller (39) is rotatably connected to both the L-shaped plate (37) and the vertical plate (38). A tension spring (310) is fixedly connected between the horizontal section of the L-shaped plate (37) and the top of the mounting seat (33).

3. The arc welding device for power construction according to claim 2, characterized in that, A rotating rod is rotatably connected between the vertical plates (38) and fixed to the welding slag wheel (35). A large bevel gear (311) is fixedly connected to the rotating rod. A transmission rod is rotatably installed on the vertical plates (38), and a small bevel gear (312) that meshes with the large bevel gear (311) is fixedly connected to the transmission rod. A motor that drives the transmission rod to rotate is fixed to the mounting base (33) by bolts. The welding slag wheel (35) has a toothed structure.

4. The arc welding device for power construction according to claim 3, characterized in that, A spline shaft (313) is fixedly installed at the output end of the motor, and a limit ring is fixedly connected to the spline shaft (313), and a drive disk (314) is slidably connected thereto. Trapezoidal striking blocks (315) are symmetrically fixedly connected to both sides of the bottom of the drive disk (314). A driven disk (316) is fixedly connected to the top of the transmission rod, and trapezoidal striking blocks (317) are symmetrically fixedly connected to both sides of the top of the driven disk (316). A spring (318) is fixedly connected between the limit ring and the drive disk (314).

5. The arc welding device for power construction according to claim 1, characterized in that, The C-shaped swivel base (31) is symmetrically slidably connected to C-shaped seats (12) on both sides. The two sets of C-shaped seats (12) are fixedly connected by multiple U-shaped frames (13). The fixed frame (11) is fixedly connected to the corresponding U-shaped frame (13). A rotating shaft is rotatably installed on both sets of U-shaped frames (13), and a transmission gear (14) and a synchronous pulley are fixedly installed on the rotating shaft. An arc-shaped rack (319) that meshes with the transmission gear (14) is fixedly connected on the C-shaped swivel base (31). The synchronous pulleys are rotatably connected by a synchronous belt. A motor that drives the corresponding rotating shaft to rotate is fixed on the U-shaped frame (13) by bolts.

6. The arc welding device for power construction according to claim 1, characterized in that, The material removal clamping mechanism (2) includes two sets of C-shaped plates (21) fixedly connected to the fixed frame (11). Three sets of clamping seats (22) arranged in a ring array are provided between the C-shaped plates (21). Multiple clamping rollers (23) are equidistantly mounted on the clamping seats (22) along their length direction. A camera is embedded in the center of the bottom of the mounting base (33).

7. An arc welding device for power construction according to claim 6, characterized in that, The clamping seat (22) is fixedly connected to a screw (24) and two sets of sliding rods. The C-shaped plates (21) are fixedly connected to a connecting plate (25) that is slidably connected to the corresponding sliding rod. The connecting plate (25) is rotatably connected to a threaded sleeve (26) that is threadedly connected to the screw (24).

8. An arc welding device for power construction according to claim 7, characterized in that, A toothed ring (27) is fixedly connected to the threaded sleeve (26). A set of C-shaped plates (21) is slidably connected to a toothed plate (28) that meshes with the corresponding toothed ring (27). The toothed plate (28) is slidably connected to the corresponding connecting plate (25). A cylinder (29) is fixedly connected to the C-shaped plate (21). A C-shaped push plate (210) is fixedly connected to the output end of the cylinder (29). The C-shaped push plate (210) is fixedly connected to three sets of toothed plates (28).

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