A welding robot for steel structure manufacturing

Abstract

The present application relates to the field of steel structure manufacturing, and particularly relates to a welding robot for steel structure manufacturing, which comprises an electric control lifting frame, mounting discs and electric push rods, etc.; the electric control lifting frame is connected with a driving unit; the driving unit is connected with two mounting discs, and is used to drive the mounting discs to move and rotate; each mounting disc is provided with a plurality of movable grooves; each movable groove is fixedly connected with an electric push rod; the telescopic part of each electric push rod is fixedly connected with an electric clamp for fixing the straight main reinforcement; the driving unit is connected with two fixing blocks; each fixing block is rotatably connected with a connecting block; the fixing block is fixedly connected with a motor for driving the connecting block to rotate. The mounting disc and the placing plate are used to automatically position the straight main reinforcement and the reinforcing inner ring, so that automatic welding is realized; compared with the manual welding mode, the welding robot does not need to be operated by multiple people, effectively reduces the overall labor intensity, and improves the overall welding quality and efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel structure manufacturing, and more particularly to a welding robot for steel structure manufacturing. Background Technology

[0002] Reinforcing cages are key skeletal structures in concrete structures that bear tensile stress, and are widely used in civil engineering fields such as bridges, tunnels, high-rise buildings, and pile foundations.

[0003] Traditional steel reinforcement cages typically consist of multiple longitudinal main bars and several internally welded reinforcing steel rings. To ensure the structural stability and load-bearing capacity of the cage, after welding the reinforcing rings to the inside of the longitudinal main bars, additional reinforcing bars are spirally wound and welded along the length of the main bars. The reinforcing rings enhance the overall stiffness to resist construction deformation, while the spiral reinforcing bars improve load-bearing capacity and resistance to deformation, thus transforming the steel reinforcement cage into a highly efficient and stable composite load-bearing structure. Currently, the fabrication of steel reinforcement cages mainly relies on manual placement and welding. This manual welding method is labor-intensive, inefficient, requires multiple operators, and the strength of the welds is greatly affected by the operator's skill level, easily leading to quality defects such as uneven spacing and weld misalignment.

[0004] In summary, this application proposes a welding robot for steel structure manufacturing, which improves the aforementioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of manual binding or welding, which is the main method of steel cage processing, manual welding is labor-intensive, inefficient, requires multiple people to operate at the same time, and is prone to quality defects such as uneven spacing and welding misalignment, this invention provides a welding robot for steel structure manufacturing.

[0006] The technical solution is as follows: A welding robot for steel structure manufacturing includes an electrically controlled lifting frame and a mounting plate. The electrically controlled lifting frame is connected to a drive unit. The drive unit is connected to two mounting plates and is used to drive the mounting plates to move and rotate. Each mounting plate has several movable slots. An electric push rod is fixedly connected to each movable slot. An electric gripper for fixing straight main ribs is fixedly connected to the telescopic part of each electric push rod. The drive unit is connected to two fixed blocks. Each of the two fixed blocks is rotatably connected to a connecting block. A motor for driving the connecting block to rotate is fixedly connected to each fixed block. A placement plate for placing a reinforcing inner ring is fixedly connected to both connecting blocks. Several electric push rods arranged in a circular array are fixedly connected to the placement plate. An arc-shaped top block is fixedly connected to the telescopic part of each electric push rod. The drive unit is connected to a laser welding gun.

[0007] As an improvement to the above solution, the drive unit includes linear guide rails; the electrically controlled lifting frame is equipped with two linear guide rails; the two linear guide rails are jointly equipped with two slidable arc-shaped guide rails, and the slider of the arc-shaped guide rails is fixedly connected to the mounting plate; the two linear guide rails are jointly equipped with a slidable arc-shaped guide rail, the slider of the arc-shaped guide rail is fixedly connected to the fixing block, and the slider of the arc-shaped guide rail is connected to the laser welding gun; the two linear guide rails are jointly equipped with a slidable arc-shaped guide rail, and along the length direction of the linear guide rails, the arc-shaped guide rails 2 and 3 are located between the two arc-shaped guide rails.

[0008] By employing the above-described structure, this invention enables automatic positioning and welding of the straight main ribs and the reinforcing inner ring. Compared to manual welding, it eliminates the need for multiple operators, effectively reducing overall labor intensity and improving overall welding quality and efficiency.

[0009] As an improvement to the above scheme, it also includes an electric push rod three and an electric gripper two; the placement plate has several movable slots two, and the positions of the movable slots two correspond to the positions of the movable slots one; each movable slot two has an electric push rod three fixedly connected in it; each telescopic part of the electric push rod three has an electric gripper two fixedly connected in it for fixing the straight main reinforcement.

[0010] As an improvement to the above scheme, it also includes a mounting plate; the arc-shaped guide rail three is fixedly connected to the mounting plate via a slider; the mounting plate is fixedly connected to an electric push rod four; the telescopic part of the electric push rod four is fixedly connected to an arc-shaped pressure plate; the arc-shaped pressure plate has a guide channel; the arc-shaped pressure plate is hinged with several limiting rings, and the limiting rings are distributed along the guide channel, and bolts are provided on the limiting rings, and bolt holes for the bolts to pass through are provided on the arc-shaped pressure plate; the arc-shaped pressure plate is rotatably connected to a pressing roller for pressing the spiral outer ribs; a laser welding gun two is installed on the slider of the arc-shaped guide rail three.

[0011] By employing the above-described structure, this invention enables simultaneous welding of the reinforcing inner ring and the spiral outer ribs. Compared to existing methods that require transferring the steel cages to different equipment one by one for welding, this invention effectively improves the overall welding efficiency.

[0012] As an improvement to the above scheme, the outer surface of the arc-shaped top block is set as a rough surface.

[0013] As an improvement to the above scheme, the guide channel is spiral-shaped.

[0014] As an improvement to the above solution, a positioning plate is also included; two linear guide rails are jointly mounted with two sliding positioning plates, and two arc-shaped guide rails are located between the two positioning plates.

[0015] As an improvement to the above scheme, it also includes a guide plate; the positioning plate has guide holes; and the positioning plate is fixedly connected to a guide plate for guiding the straight main reinforcement.

[0016] As an improvement to the above solution, it also includes top rods; the positioning plate is fixed with several top rods.

[0017] By employing the above-described structure, this invention enables the straight main reinforcement bars to be pushed out, allowing the steel cage to detach from electric grippers one and two and fall to the ground, thus facilitating the transfer of the formed steel cage.

[0018] As an improvement to the above solution, each of the arc-shaped guide rails 2 and 3 is fixedly connected to a suction pipe, and the suction pipe is connected to an external air pump for sucking up welding fumes.

[0019] The present invention has the following advantages: it automatically positions the straight main ribs and the inner reinforcing ring through the mounting plate and the placement plate, thereby realizing automatic welding; compared with the manual welding method, it does not require multiple people to operate, effectively reducing the overall labor intensity and improving the overall welding quality and efficiency.

[0020] The placement plate is moved to the left by the second arc-shaped guide rail to weld the inner reinforcing ring. Then, the arc-shaped guide rail three is controlled to move the arc-shaped pressure plate and pressing roller to the left to weld the spiral outer rib. The second arc-shaped guide rail is always to the left of the third arc-shaped guide rail, moving to the left one by one while welding the inner reinforcing ring and the spiral outer rib. Compared with the existing method of transferring the steel cage to different equipment one by one for welding, this method can effectively improve the overall welding efficiency. In addition, during the welding process, the welded inner reinforcing ring supports and fixes the inside of the straight main rib, and the spiral outer rib restricts the outside of the straight main rib. This allows the inner reinforcing ring and the spiral outer rib to fully fit with the straight main rib, effectively improving the overall welding quality and avoiding the problem of poor fit and reduced welding quality caused by deformation due to lack of fixation in the middle of the straight main rib. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the welding robot for steel structure manufacturing disclosed in this invention; Figure 2 This is a top view disclosed in this invention; Figure 3 This is a diagram showing the state of welding between the spiral outer reinforcement and the straight main reinforcement disclosed in this invention. Figure 4 This is a state diagram of the placement plate fixing and reinforcing inner ring disclosed in this invention; Figure 5 This is a diagram showing the state of the arc-shaped pressure plate and the spiral outer rib fixed by the pressure roller disclosed in this invention. Figure 6 This is a schematic diagram of the assembly of the mounting plate, electric push rod 1 and electric gripper 1 disclosed in this invention. Figure 7 This is a schematic diagram of the structure of the arc-shaped guide rail and the arc-shaped pressure plate combination disclosed in this invention; Figure 8This is a schematic diagram of the structure of the combination of fixing block, connecting block, motor and placement plate disclosed in this invention; Figure 9 This is a schematic diagram of the combined structure of the arc-shaped pressure plate, the pressing roller, and the laser welding gun disclosed in this invention; Figure 10 This is a schematic diagram of the structure of the arc-shaped guide rail 2, arc-shaped guide rail 3 and arc-shaped pressure plate combination disclosed in this invention; Figure 11 This is a schematic diagram of the specific structure of the positioning plate disclosed in this invention; Figure 12 This is a schematic diagram of the steel cage structure disclosed in this invention.

[0022] Labels in the diagram: 1-Electric lifting frame, 2-Mounting plate, 3-Electric push rod one, 4-Electric gripper one, 5-Fixing block, 6-Connecting block, 7-Motor, 8-Placement plate, 9-Electric push rod two, 10-Arc-shaped top block, 11-Laser welding gun one, 101-Linear guide rail, 102-Suction tube, 103-Arc-shaped guide rail one, 104-Arc-shaped guide rail two, 105-Arc-shaped guide rail three, 111-Electric push rod three, 112- Electric gripper 2, 120-mounting plate, 121-electric push rod 4, 122-arc pressure plate, 123-pressing roller, 124-laser welding gun 2, 125-limiting ring, 131-positioning plate, 132-guide plate, 133-top rod, 21-moving groove 1, 81-moving groove 2, 12201-guide channel, 13101-guide hole, 100-straight main rib, 200-reinforcing inner ring, 300-spiral outer rib. Detailed Implementation

[0023] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0024] Example: A welding robot for steel structure manufacturing, referring to... Figures 1-12As shown, the system includes an electrically controlled lifting frame 1 and a mounting plate 2. A drive unit is connected to the electrically controlled lifting frame 1. Two mounting plates 2 are connected to the drive unit, which is used to move and rotate the mounting plates 2. Each mounting plate 2 has several movable slots 21. An electric push rod 3 is fixedly connected to each movable slot 21. An electric gripper 4 for fixing the straight main rib 100 is fixedly connected to the telescopic part of each electric push rod 3. Two fixing blocks 5 are connected to the drive unit. A connecting block 6 is rotatably connected to each of the two fixing blocks 5. A motor 7 for driving the connecting block 6 to rotate is fixedly connected to the fixing blocks 5. A placement plate 8 for placing the reinforcing inner ring 200 is fixedly connected to both connecting blocks 6. Several electric push rods 9 arranged in a circular array are fixedly connected to the placement plate 8. An arc-shaped top block 10 is fixedly connected to the telescopic part of each electric push rod 9. A laser welding gun 11 is connected to the drive unit.

[0025] The drive unit includes a linear guide rail 101, an arc-shaped guide rail one 103, an arc-shaped guide rail two 104, and an arc-shaped guide rail three 105; the electrically controlled lifting frame 1 is equipped with two linear guide rails 101; the two linear guide rails 101 are jointly equipped with two slidable arc-shaped guide rails one 103, and the slider of the arc-shaped guide rail one 103 is fixedly connected to the mounting plate 2; the two linear guide rails 101 are jointly equipped with a slidable arc-shaped guide rail two 104, the slider of the arc-shaped guide rail two 104 is fixedly connected to the fixing block 5, and the slider of the arc-shaped guide rail two 104 is connected to the laser welding gun one 11; the two linear guide rails 101 are jointly equipped with a slidable arc-shaped guide rail three 105, and along the length direction of the linear guide rails 101, the arc-shaped guide rail two 104 and the arc-shaped guide rail three 105 are located between the two arc-shaped guide rails one 103, and the arc-shaped guide rail two 104 is located to the left of the arc-shaped guide rail three 105.

[0026] It also includes an electric push rod 3111 and an electric gripper 212; the placement plate 8 has several movable slots 281, and the positions of the movable slots 281 correspond to the positions of the movable slots 121; each movable slot 281 has an electric push rod 3111 fixedly connected in it; each electric push rod 3111 has an electric gripper 212 fixedly connected to its telescopic part.

[0027] It also includes a mounting plate 120, an electric push rod 121, an arc-shaped pressure plate 122, a pressing roller 123, and a laser welding gun 124; the arc-shaped guide rail 105 is fixedly connected to the mounting plate 120 via a slider; the mounting plate 120 is fixedly connected to the electric push rod 121; the telescopic part of the electric push rod 121 is fixedly connected to the arc-shaped pressure plate 122; the arc-shaped pressure plate 122 has a guide channel 12201; the arc-shaped pressure plate 122 is hinged with several limiting rings 125, and the limiting rings 125 are distributed along the guide channel 12201. The limiting rings 125 are provided with bolts, and the arc-shaped pressure plate 122 has bolt holes for the bolts to pass through. By screwing the bolts on the limiting rings 125 into the bolt holes, the limiting rings 125 are fixed; the arc-shaped pressure plate 122 is rotatably connected to the pressing roller 123; the laser welding gun 124 is mounted on the slider of the arc-shaped guide rail 105.

[0028] The outer surface of the arc-shaped top block 10 is made into a rough surface, which can increase the frictional force when in contact with the reinforcing inner ring 200 and avoid slippage during the rotational welding process of the straight main rib 100 and the reinforcing inner ring 200.

[0029] The guide channel 12201 is spiral-shaped and is used to guide the spiral outer reinforcement 300 to fit into the surface of the straight main reinforcement 100 in a spiral shape, thereby improving the welding quality of the steel cage.

[0030] It also includes a positioning plate 131; two linear guide rails 101 are jointly mounted with two sliding positioning plates 131, and two arc-shaped guide rails 103 are located between the two positioning plates 131.

[0031] It also includes a guide plate 132; a positioning plate 131 with a guide hole 13101; and a guide plate 132 fixedly connected to the positioning plate 131.

[0032] It also includes a push rod 133; the positioning plate 131 is fixedly connected with several push rods 133.

[0033] Each of the arc-shaped guide rail 2 104 and arc-shaped guide rail 3 105 is fixedly connected to a suction pipe 102, and the suction pipe 102 is connected to an external air pump, which can promptly remove the welding fumes generated during welding and reduce the harm to the health of surrounding workers.

[0034] First, multiple straight main ribs 100 are manually inserted into the movable slots 21 of the two mounting plates 2, and clamped and fixed by the electric grippers 4 in the movable slots 21. Then, all electric push rods 3 are controlled to synchronously drive the electric grippers 4 to move, adjusting the distance between the straight main ribs 100 until the desired position is achieved. Figure 2Taking the perspective as an example, the arc-shaped guide rail 104 is then controlled to move other connected parts along the linear guide rail 101 until the arc-shaped guide rail 104 moves to the vicinity of the right mounting plate 2. Then, the required reinforcing inner ring 200 is manually or by an external robotic arm through the gap of the linear main rib 100 and placed on the placement plate 8. Then, all the electric push rods 9 are controlled to move the arc-shaped top block 10 simultaneously until the arc-shaped top block 10 contacts the placed reinforcing inner ring 200. The arc-shaped top block 10 positions and adjusts the position of the reinforcing inner ring 200 so that the reinforcing inner ring 200 is concentrically aligned with the placement plate 8. Then, the motor 7 is controlled to rotate the connecting block 6 and the placement plate 8 around the fixed block 5 by 90 degrees so that the placement plate 8 is concentrically aligned with the mounting plate 2, thereby making the reinforcing inner ring 200 concentrically aligned with the mounting plate 2 and in contact with all the linear main ribs 100. Figure 4 As shown, the laser welding gun 11 located above is then controlled to rotate along the upper semi-circular area of ​​the arc-shaped guide rail 104 to weld the upper contact area between the reinforcing inner ring 200 and the straight main rib 100; the laser welding gun 11 located below is controlled to rotate along the lower semi-circular area of ​​the arc-shaped guide rail 104 to weld the lower contact area between the reinforcing inner ring 200 and the straight main rib 100, thereby avoiding the fixed block 5 and the placement plate 8 located in the center, and achieving welding of the contact area between the reinforcing inner ring 200 and the straight main rib 100. Next, the main straight rib 100 and the reinforcing inner ring 200 are automatically positioned by the mounting plate 2 and the placement plate 8 to achieve automatic welding. Compared with manual welding, it does not require multiple operators, effectively reducing the overall labor intensity and improving the overall welding quality and efficiency. After the welding of one reinforcing inner ring 200 is completed, the arc-shaped guide rail 104 is controlled to move to the left, and then the next reinforcing inner ring 200 is placed on the placement plate 8 by a person or an external robotic arm. The same operation is repeated to weld them in sequence, thereby completing the overall welding.

[0035] After the reinforcing ring is welded, in order to increase the overall load-bearing capacity and deformation capacity of the steel cage, steel bars are spirally wound and welded around the outside of the steel cage along the length of the main reinforcement bars. However, after the reinforcing ring is welded, the entire steel cage is transferred to other equipment for spiral reinforcement bar welding. The method of welding each reinforcement bar one by one is inefficient and takes a long time. Therefore, before placing the inner reinforcing ring 200 on the placement plate 8, a rotating steel bar feeding rack is manually placed around the equipment, and the steel bar coil is placed on the rotating steel bar feeding rack. The steel bar is released by rotating the steel bar feeding rack. Then, the end of the steel bar is manually guided along the guide channel 122 of the arc-shaped pressure plate 122. 01. Pull the rebar through the limiting ring 125, then screw the bolts on the limiting ring 125 into the bolt holes of the arc-shaped pressure plate 122 to fix the limiting ring 125. The limiting ring 125 restricts the passing rebar until the end of the rebar moves to the underside of the pressing roller 123. Then, control the electric push rod 121 to move the arc-shaped pressure plate 122 and the pressing roller 123 toward the surface of the straight main reinforcement 100 until the pressing roller 123 presses the rebar against the outer surface of the straight main reinforcement 100, making them fit together. Then, control the laser welding gun 124 to weld the joint between the rebar and the straight main reinforcement 100, initially fixing the rebar to the outer surface of the straight main reinforcement 100. Figure 5 As shown, the arc-shaped guide rail 3 105 is then controlled to drive the arc-shaped pressure plate 122 and the pressing roller 123 to rotate counterclockwise from right to left via the slider, and the arc-shaped guide rail 3 105 is simultaneously controlled to move to the left, pressing the spiral outer rib 300 into the outer surface of the straight main rib 100 in a spiral shape, and welding them at the joint, thereby realizing the welding of the spiral outer rib 300 and the straight main rib 100; while during the welding of the steel cage, the arc-shaped guide rail 2 104 is controlled to drive the placement plate 8 to move to the left to weld the reinforcing inner ring 200, and the arc-shaped guide rail 3 105 is controlled to drive the arc-shaped pressure plate 122 and the pressing roller 123 to move to the left to weld the spiral outer rib 300; the arc-shaped guide rail 2 104 is always in position To the left of the arc-shaped guide rail 3105, both move synchronously to the left, enabling simultaneous welding of the reinforcing inner ring and the spiral outer rib. Compared to the existing method of transferring the steel cage to different equipment one by one for welding, this method effectively improves the overall welding efficiency. Furthermore, during the welding process, the welded reinforcing inner ring 200 supports and fixes the inside of the straight main rib 100, and the spiral outer rib 300 restricts the outside of the straight main rib 100. This ensures that both the reinforcing inner ring 200 and the spiral outer rib 300 can fully fit with the straight main rib 100, effectively improving the overall welding quality and avoiding the situation where the middle of the straight main rib 100 lacks fixation, resulting in deformation, poor overall fit, and reduced overall welding quality.

[0036] Furthermore, due to the relatively long overall length and substantial mass of the straight main ribs 100, before the initial welding work, it is necessary to manually insert each straight main rib 100 into the movable slots 21 on the right and left sides one by one, and clamp and fix them using the electric grippers 4 on both sides. This involves a high degree of labor intensity, and it is impossible to ensure that the fixed positions on both sides are on the same horizontal line. Therefore, when inserting the straight main ribs 100, first control the electric lifting frame 1 to move the linear guide rail 101 and other integral parts downward, so that the lower side of the mounting plate 2 is close to the ground. Then control the positioning plate 131 to move along the linear guide rail 101 and approach the mounting plate 2. Next, control the arc guide rail 103 to rotate the mounting plate 2, so that one of the movable slots 21 rotates to the bottom and aligns with the guide hole 13101. Then control the placement plate 8 to rotate, so that it is concentrically aligned with the mounting plate 2, and control its rotation so that the movable slot 21 is aligned with the movable slot 81. Then control the arc guide rail 104 to move the placement plate 8 closer to the right side of the mounting plate. 2. Then, manually push one end of the straight main reinforcement 100 along the guide plate 132 on the right positioning plate 131, insert it through the guide hole 13101, and move it into the movable slot 1 21 and movable slot 2 81. Next, control the electric gripper 2 112 in the movable slot 2 81 to clamp the straight main reinforcement 100. Then control the placement plate 8 to move to the left, pulling the straight main reinforcement 100 to the left until the straight main reinforcement 100 is inserted into the left movable slot 1 21. Then control the electric gripper 4 on both sides to pull the pulled-in... The straight main reinforcement 100 is clamped and fixed, completing the installation of one straight main reinforcement 100. Then, the arc guide rail 103 and arc guide rail 204 are controlled to drive the mounting plate 2 and the placement plate 8 to rotate, aligning the next movable groove 121 and movable groove 281 with the guide hole 13101. The same operation is repeated to complete the installation of straight main reinforcement 100 one by one. By rotating the installation part to the lower side and making it close to the ground, it is easier for people to quickly install and fix the straight main reinforcement 100, thus improving the overall efficiency.

[0037] Furthermore, after the straight main reinforcement bars 100 are installed, the positioning plates 131 on both sides are moved towards each other to push the installed straight main reinforcement bars 100, aligning all the straight main reinforcement bars 100 and improving the subsequent welding quality. After the overall steel cage welding is completed, the arc-shaped guide rail 104 is located at the left end of the steel cage. At this time, the placement plate 8 is in a vertical state, and the electric clamp 112 is extended and placed on the straight main reinforcement bars 100. Then, the left arc-shaped guide rail 103, arc-shaped guide rail 2 104, and arc-shaped guide rail 3 105 are controlled to continue moving to the left until the mounting plate 2 on the left arc-shaped guide rail 103 is disengaged from the straight main reinforcement bars 100. At this time, the electric clamp 112 on the arc-shaped guide rail 2 104 fixes the left side of the straight main reinforcement bars 100. At the right end, the electric gripper 4 on the right arc-shaped guide rail 103 fixes its right end. Then, the electric lifting frame 1 is controlled to move the formed steel cage down to near the ground. Next, the mounting plate 2 and the placement plate 8 are controlled to rotate so that the straight main reinforcement 100 is aligned with the top rod 133. Then, the right arc-shaped guide rail 103 is controlled to move the right mounting plate 2 to the right, while the arc-shaped guide rail 2 104 is controlled to move the placement plate 8 to the left, so that the two are separated from the two ends of the steel cage. At this time, the top rod 133 pushes the straight main reinforcement 100 out from the electric gripper 4 and the electric gripper 2 112, so that the steel cage is separated from the electric gripper 4 and the electric gripper 2 112 and falls to the ground. Then, the electric lifting frame 1 is controlled to rise again, and the formed steel cage is transferred manually or by other equipment.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding robot for steel structure manufacturing, comprising an electrically controlled lifting frame (1); characterized in that: It also includes an installation plate (2); an electric lifting frame (1) is connected to a drive unit; the drive unit is connected to two installation plates (2), and the drive unit is used to drive the installation plates (2) to move and rotate; each installation plate (2) has several movable slots (21); each movable slot (21) is fixedly connected to an electric push rod (3); each electric push rod (3) has an electric gripper (4) for fixing the straight main rib (100) fixedly connected to its telescopic part; the drive unit is connected to two fixed blocks (5); each of the two fixed blocks (5) is rotatably connected to a connecting block (6); the fixed blocks (5) are fixedly connected to a motor (7) for driving the connecting block (6) to rotate; the two connecting blocks (6) are jointly fixedly connected to a placement plate (8) for placing the reinforcing inner ring (200); the placement plate (8) is fixedly connected to several electric push rods (9) arranged in a ring array; each electric push rod (9) has an arc-shaped top block (10) fixedly connected to its telescopic part; the drive unit is connected to a laser welding gun (11).

2. The welding robot for steel structure manufacturing according to claim 1, characterized in that: The drive unit includes a linear guide rail (101); the electric lifting frame (1) is equipped with two linear guide rails (101); the two linear guide rails (101) are jointly equipped with two slidable arc-shaped guide rails (103), and the slider of the arc-shaped guide rails (103) is fixedly connected to the mounting plate (2); the two linear guide rails (101) are jointly equipped with a slidable arc-shaped guide rail (104), the slider of the arc-shaped guide rail (104) is fixedly connected to the fixing block (5), and the slider of the arc-shaped guide rail (104) is connected to the laser welding gun (11); the two linear guide rails (101) are jointly equipped with a slidable arc-shaped guide rail (105), and along the length direction of the linear guide rails (101), the arc-shaped guide rails (104) and (105) are located between the two arc-shaped guide rails (103).

3. The welding robot for steel structure manufacturing according to claim 1, characterized in that: It also includes an electric push rod three (111) and an electric gripper two (112); the placement plate (8) has several movable slots two (81), and the position of the movable slots two (81) corresponds to the position of the movable slot one (21); each movable slot two (81) is fixedly connected to an electric push rod three (111); each electric push rod three (111) has an electric gripper two (112) fixedly connected to its telescopic part for fixing the straight main rib (100).

4. The welding robot for steel structure manufacturing according to claim 2, characterized in that: It also includes a mounting plate (120); the arc-shaped guide rail three (105) is fixed to the mounting plate (120) via a slider; the mounting plate (120) is fixed to an electric push rod four (121); the telescopic part of the electric push rod four (121) is fixed to an arc-shaped pressure plate (122); the arc-shaped pressure plate (122) has a guide channel (12201); the arc-shaped pressure plate (122) is hinged to several limiting rings (125), and the limiting rings (125) are distributed along the guide channel (12201). The limiting rings (125) are provided with bolts, and the arc-shaped pressure plate (122) has bolt holes for the bolts to pass through; the arc-shaped pressure plate (122) is rotatably connected to a pressing roller (123) for pressing the spiral outer rib (300); the slider of the arc-shaped guide rail three (105) is equipped with a laser welding gun two (124).

5. A welding robot for steel structure manufacturing according to claim 1, characterized in that: The outer surface of the arc-shaped top block (10) is set to a rough surface.

6. The welding robot for steel structure manufacturing according to claim 4, characterized in that: The guide channel (12201) is spiral-shaped.

7. A welding robot for steel structure manufacturing according to claim 2, characterized in that: It also includes a positioning plate (131); two linear guide rails (101) are jointly mounted with two sliding positioning plates (131), and two arc-shaped guide rails (103) are located between the two positioning plates (131).

8. A welding robot for steel structure manufacturing according to claim 7, characterized in that: It also includes a guide plate (132); a positioning plate (131) with a guide hole (13101); and a guide plate (132) for guiding the straight main reinforcement (100) is fixedly connected to the positioning plate (131).

9. A welding robot for steel structure manufacturing according to claim 8, characterized in that: It also includes a push rod (133); the positioning plate (131) is fixed with several push rods (133).

10. A welding robot for steel structure manufacturing according to claim 2, characterized in that: Arc-shaped guide rail 2 (104) and arc-shaped guide rail 3 (105) are each fixed with a suction pipe (102), and the suction pipe (102) is connected to an external air pump for suctioning welding fumes.

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