Portal type submerged arc welding machine for manufacturing electric power tower

Abstract

The application discloses a door type submerged-arc welding machine for electric power tower manufacturing and belongs to the technical field of electric power tower manufacturing and welding. The door type submerged-arc welding machine comprises a moving frame, the moving frame is arranged on a slide, the upper surface of the moving frame is fixedly connected with an auxiliary plate, the surface of the auxiliary plate is fixedly connected with a working plate, the surface of the working plate is slidably provided with a sliding plate, and the front side of the sliding plate is fixedly provided with a box for storing welding flux. After the workpiece is clamped, the workpiece is welded by operating the welding die on the lower surface of the box. In the process, the welding flux is discharged through the discharge pipe, and the motor is started. At this time, the knocking rod intermittently strikes the workpiece, the workpiece slightly vibrates, the smoothing plate is in a reciprocating swing state, the welding flux is smoothed, the thickness of the welding flux layer is uniform and stable, the arc is stably burned, the molten pool is fully protected, defects such as pores and indentations are effectively prevented, and the welding seam forming quality and the first-time qualification rate are improved.

Description

Technical Field

[0001] This invention relates to the field of power tower manufacturing and welding technology, specifically to a gantry submerged arc welding machine for power tower manufacturing. Background Technology

[0002] Power transmission towers are the supporting structures for overhead power transmission lines, used to erect conductors, lightning protection wires, insulators, and other accessories. They elevate high-voltage conductors, ensuring the safe and stable transmission of electricity across regions, and are an indispensable physical backbone of the power grid. In the manufacturing process of power towers, gantry submerged arc welding machines are required. When operating, these machines can automatically complete ultra-long, deep-penetration welds on the main materials of the tower body (such as H-beams), ensuring stable weld quality and high efficiency. Gantry submerged arc welding machines are a specific type of automatic submerged arc welding equipment, classified as automatic arc welding equipment in the industry. (Example: Application No. 202020770005.3, application date...) Chinese utility model patent application dated May 12, 2020, describes a gantry-type submerged arc welding machine capable of curve welding. It features a simple structure and ease of use, enabling curve welding of workpieces and automatic submerged arc welding of H-beams and T-beams, thus improving production efficiency. Another Chinese invention patent application, with application number 202310584958.9 and application date May 23, 2023, describes a method and welding device for surfacing column nail rollers. This device features a gantry frame and utilizes colored paint to surface the column nail rollers during operation. The surface is printed to increase the contrast of the pin roller trajectory and improve welding accuracy; the camera acquires three-dimensional position information and converts it into point cloud data through software. The industrial control computer analyzes the position information and converts it into point-to-point teaching programming. The welding program is automatically programmed through the welding robot control console, the welding robot's motion path is determined, and the welding robot executes the welding program; this greatly improves production efficiency and quality stability; it also improves production efficiency and reduces labor costs; and Chinese utility model patent application No. 202520782011.3, application date 2025-04-23, discloses a double-arm submerged arc welding machine. When it is working, the assembly screw of the angle rotation mechanism can effectively drive the double-arm rotating base to rotate. The welding moving mechanism rotates at an angle through the rotation of the double-arm rotating base. The submerged arc welding mechanism can change the welding position through the second electric telescopic cylinder of the welding moving mechanism. When the welding moving mechanism rotates at an angle, it can change the angle position of the submerged arc welding mechanism, which can effectively increase the welding range and make it more convenient to use during welding; In the welding process, the use of flux is of paramount importance. It melts to form slag and gas, isolates the air to protect the molten pool, and transfers alloying elements into the weld. It directly determines the weld formation quality and mechanical properties. If the flux is not spread evenly during use, it will lead to poor arc protection, resulting in defects such as porosity, indentation, or undercut in the weld. This directly affects the welding quality, deteriorates the weld formation, and fails to meet mechanical properties. Summary of the Invention

[0003] The purpose of this invention is to provide a gantry submerged arc welding machine for manufacturing power transmission towers, in order to solve the problem mentioned in the background art where the flux is not evenly spread during use, which leads to poor arc protection and defects such as porosity, indentation, or undercut in the weld, directly affecting the welding quality, causing the weld formation to deteriorate and the mechanical properties to fail to meet the standards.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a gantry submerged arc welding machine for manufacturing power transmission towers, comprising a movable frame, the movable frame being mounted on a slide rail, an auxiliary plate being fixedly connected to the upper surface of the movable frame, a working plate being fixedly connected to the surface of the auxiliary plate, and a sliding plate being slidably mounted on the surface of the working plate; a box for storing flux being fixedly mounted on the front side of the sliding plate, and a transfer box being fixedly connected to the lower surface of the sliding plate, the transfer box being connected to the box via a conveying pipe, an adsorption pipe being provided on the side of the transfer box, and a discharge pipe being provided on the other side of the transfer box; an operation box being fixedly connected to the lower surface of the transfer box, and a welding module being provided on the lower surface of the operation box; a fixed plate being fixedly connected to the side of the operation box, and a striking rod being connected to the fixed plate and the operation box via a lifting assembly; an extrusion ring being movably mounted on the side of the operation box; a long pin being connected to the operation box via a rotating assembly, and a smoothing plate being fixedly connected to the lower surface of the long pin; and a spraying plate being mounted inside the discharge pipe via a rotating assembly to evenly spread flux.

[0005] Preferably, the lifting assembly includes a motor fixedly connected to the outer wall of the fixed plate, and a circular plate is fixedly connected to the output end of the motor, and a connecting rod is fixedly connected to the surface of the circular plate.

[0006] Preferably, a movable frame is sleeved on the surface of the connecting rod, and the striking rod is fixedly connected to the lower surface of the movable frame. In addition, a limit plate is fixedly connected to the outer wall of the control box.

[0007] Preferably, the striking rod and the limiting plate are connected through sliding connection. In addition, the extrusion ring is fixedly connected to the upper surface of the movable frame, the middle part of the discharge pipe is made of rubber, and the diameter of the rubber part of the discharge pipe is larger than the diameter of the extrusion ring.

[0008] Preferably, the rotary assembly includes an outer plate fixedly connected to the surface of the operating box, and the long pin is rotatably disposed inside the outer plate, and a force-bearing plate is fixedly connected to the surface of the long pin.

[0009] Preferably, the force-bearing plate is spiral-shaped, and a push rod is fixedly connected to the side of the striking rod. The top view of the push rod is an inverted "L" structure, and the end of the push rod is in contact with the lower surface of the force-bearing plate.

[0010] Preferably, a torsion spring is fixedly connected to the surface of the long pin, and the other side of the torsion spring is fixedly connected to the inner wall of the outer plate.

[0011] Preferably, the rotating assembly includes a first magnet fixedly connected to the upper surface of the flat plate, a lower connecting rod fixedly connected to the lower surface of the operating box, and a movable plate slidably disposed on the surface of the lower connecting rod.

[0012] Preferably, a second magnet is fixedly connected to the lower surface of the movable plate, and the magnetic poles on the lower surface of the second magnet are the same as the magnetic poles on the upper surface of the first magnet, and a lever is fixedly connected to the side of the movable plate.

[0013] Preferably, an inner connecting plate is fixedly connected to the inner wall of the discharge pipe, and a rotating shaft is rotatably arranged inside the inner connecting plate. A spraying plate is fixedly connected to the upper surface of the rotating shaft. In addition, a groove is opened on the surface of the rotating shaft. The groove is an inclined ring structure, and the lever is a bent structure. At the same time, the end of the lever is located inside the groove.

[0014] Compared with the prior art, the beneficial effects of this invention are as follows: Adopting a novel structural design, after the workpiece is clamped during use, welding is performed through the welding mold on the lower surface of the operating box. During this process, the flux is discharged through the discharge pipe, and the motor starts simultaneously. At this time, the striking rod intermittently strikes the workpiece, causing it to vibrate slightly. Furthermore, the smoothing plate is in a reciprocating oscillating state, which smooths the flux, ensuring a uniform and stable flux layer thickness. This guarantees stable arc combustion, adequate protection of the molten pool, effectively preventing defects such as porosity and indentations, and improving weld formation quality and first-pass yield. The specific details are as follows: This gantry submerged arc welding machine for manufacturing power transmission towers clamps the workpiece and welds it through the welding mold on the lower surface of the control box. At the same time, the motor starts, and the striking rod moves reciprocatingly in a vertical direction under the action of the lifting component. The striking rod can then strike the workpiece, causing it to vibrate slightly, which allows the flux to be spread more evenly.

[0015] Furthermore, during the flux delivery process, flux residue will remain on the inner wall of the discharge pipe due to electrostatic adsorption. When the striking rod makes reciprocating linear motion, the extrusion ring will press up and down against the rubber part of the discharge pipe, which plays a role in preventing residue and accelerating unblocking, thereby reducing the risk of blockage and stabilizing the flux flow.

[0016] (2) When the striking rod makes a reciprocating linear motion in the vertical direction, it will push the force plate through the push rod. Then, the force plate and the smoothing plate will swing back and forth around the long pin under the action of the thrust and torsion spring. Thus, the smoothing plate can not only pass through the flux, but also has the function of horizontally sweeping the flux, which optimizes the smoothing effect.

[0017] (3) When the gantry submerged arc welding machine for manufacturing power towers swings, it will drive the first magnet to move synchronously. As a result, the distance between the first magnet and the second magnet is changing intermittently. At this time, the movable plate will make reciprocating linear motion in the vertical direction under the action of mutual repulsive magnetic force, its own gravity and the lower connecting rod. At this time, the movable plate will drive the rotating shaft to rotate in the same direction inside the inner connecting plate through the lever and groove. Then the spraying plate on the upper surface of the rotating shaft can spray the flux that is in contact with it, so that the flux is more evenly scattered, thereby optimizing the effect of spreading the flux.

[0018] Furthermore, the even application of flux simplifies the work of the smoothing plate, as the fluxing plate, smoothing plate, and striking rod work together to ensure even application of flux. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection structure between the mobile frame and the auxiliary plate of the present invention; Figure 2 This is a schematic diagram of the connection structure between the working plate and the sliding plate of the present invention; Figure 3 This is a schematic diagram of the connection structure between the operating box and the fixing plate of the present invention; Figure 4 This is a schematic diagram of the connection structure between the operating box and the limiting plate of the present invention; Figure 5 This is a schematic diagram of the connection structure between the striking rod and the push rod of the present invention; Figure 6 This is a schematic diagram of the connection structure between the long pin and the load-bearing plate of the present invention; Figure 7 This is a schematic diagram of the connection structure between the control box and the lower connecting rod of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the discharge pipe of the present invention; Figure 9 This is a schematic diagram of the connection structure between the movable plate and the second magnet of the present invention; Figure 10This is a schematic diagram of the lever distribution structure of the present invention.

[0020] In the diagram: 1. Moving frame; 2. Auxiliary plate; 3. Working plate; 4. Slide plate; 5. Transfer box; 6. Discharge pipe; 7. Control box; 8. Fixed plate; 9. Motor; 10. Limit plate; 11. External plate; 12. Circular plate; 13. Connecting rod; 14. Movable frame; 15. Striking rod; 16. Extrusion ring; 17. Long pin; 18. Push rod; 19. Force plate; 20. Torsion spring; 21. Smoothing plate; 22. First magnet; 23. Lower connecting rod; 24. Internal connecting plate; 25. Rotating shaft; 26. Spraying plate; 27. Groove; 28. Movable plate; 29. ​​Lever; 30. Second magnet. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-10 The present invention provides the following technical solution: a gantry submerged arc welding machine for manufacturing power transmission towers.

[0023] Example 1: The lifting assembly allows the striking rod 15 to intermittently strike the workpiece, thus ensuring even application of the flux. Figures 1-5 As shown, the system includes a movable frame 1, which is mounted on a slide rail. An auxiliary plate 2 is fixedly connected to the upper surface of the movable frame 1, and a working plate 3 is fixedly connected to the surface of the auxiliary plate 2. A sliding plate 4 is slidably mounted on the surface of the working plate 3. A box for storing flux is fixedly mounted on the front side of the sliding plate 4, and a transfer box 5 is fixedly connected to the lower surface of the sliding plate 4. The transfer box 5 is connected to the box via a conveying pipe. An adsorption pipe is provided on the side of the transfer box 5, and a discharge pipe 6 is provided on the other side of the transfer box 5. An operation box 7 is fixedly connected to the lower surface of the transfer box 5, and a welding module is provided on the lower surface of the operation box 7. A fixed plate 8 is fixedly connected to the side of the operation box 7, and a striking rod 15 is connected to the fixed plate 8 and the operation box 7 via a lifting assembly. An extrusion ring 16 is also movably mounted on the side of the operation box 7. The lifting assembly includes a motor 9 fixedly connected to the outer wall of the fixed plate 8, and a circular plate 12 is fixedly connected to the output end of the motor 9. A connecting rod 13 is fixedly connected to the surface of the circular plate 12.

[0024] A movable frame 14 is sleeved on the surface of the connecting rod 13, and a striking rod 15 is fixedly connected to the lower surface of the movable frame 14. In addition, a limiting plate 10 is fixedly connected to the outer wall of the operating box 7. The striking rod 15 and the limiting plate 10 are connected through slidingly. Furthermore, an extrusion ring 16 is fixedly connected to the upper surface of the movable frame 14. The middle part of the discharge pipe 6 is made of rubber, and the diameter of the rubber part of the discharge pipe 6 is larger than the diameter of the extrusion ring 16.

[0025] The gantry submerged arc welding machine is a type of automatic electric arc welding machine. During use, after the workpiece is positioned and welded, it is clamped and then welded through the welding mold on the lower surface of the operating box 7. At the same time, the moving frame 1 moves on the slide. The position of the transfer box 5 and the operating box 7 can be adjusted by the working plate 3 and the sliding plate 4 on the surface of the auxiliary plate 2. During the welding process, the motor 9 on the surface of the fixed plate 8 is started. At this time, the circular plate 12 drives the connecting rod 13 to rotate synchronously, and then the connecting rod 13 drives the movable frame 14 to move. At this time, the movable frame 14 and the striking rod 15 are also in cooperation with the limiting plate 10, so that the striking rod 15 can make reciprocating linear motion in the vertical direction. Then the striking rod 15 can strike the workpiece, causing the workpiece to vibrate slightly at the striking position. The vibration at the striking position can shake the surrounding flux, thus making the flux spread more evenly. During the flux delivery process, flux residue will remain on the inner wall of the discharge pipe 6 due to electrostatic adsorption. When the striking rod 15 makes reciprocating linear motion, the extrusion ring 16 will press up and down on the rubber part of the discharge pipe 6, which plays a role in preventing residue and accelerating unblocking, thereby reducing the risk of blockage and stabilizing the flux flow. In addition, the rubber part is an industrial oil-resistant rubber with a certain hardness and good resilience. Its inner wall is rigidly supported by the discharge pipe 6, and its outer wall is constrained by the extrusion ring. Under this structure, the rubber part will not produce wrinkles that affect the movement. Instead, it achieves the scraping and unblocking functions through elastic deformation. After the whole device has been used for a long time, the discharge pipe 6 can be inspected and maintained along with the overall maintenance of the device.

[0026] Example 2: Unlike Example 1, the rotating component allows the smoothing plate 21 to swing around the long pin 17, thereby optimizing the smoothing effect of the smoothing plate 21. Figures 5-7 As shown, the long pin 17 is connected to the operating box 7 via a rotary assembly, and a flat plate 21 is fixedly connected to the lower surface of the long pin 17; the rotary assembly includes an outer plate 11 fixedly connected to the surface of the operating box 7, and the long pin 17 is rotatably arranged inside the outer plate 11, and a force-bearing plate 19 is fixedly connected to the surface of the long pin 17.

[0027] The force plate 19 is spiral-shaped. In addition, a push rod 18 is fixedly connected to the side of the striking rod 15. The top view of the push rod 18 is an inverted "L" structure. The end of the push rod 18 is in contact with the lower surface of the force plate 19. A torsion spring 20 is fixedly connected to the surface of the long pin 17. The other side of the torsion spring 20 is fixedly connected to the inner wall of the outer plate 11.

[0028] During the operation of the striking rod 15, when it moves upward, it will drive the push rod 18 to rise synchronously. At this time, the push rod 18 will push the force plate 19, which is spiral-shaped. Meanwhile, the long pin 17 is rotatably connected to the outer plate 11. Thus, the upward movement of the force plate 19 is converted into the rotational motion of the long pin 17. The force plate 19 drives the long pin 17 to rotate inside the outer plate 11. At this time, the torsion spring 20 is stretched. When the striking rod 15 drives the push rod 18 to descend, the force plate 19 is not pushed. At this time, the force plate 19 and the long pin 17 rotate under the action of the torsion spring 20. Thus, the long pin 17 drives the smoothing plate 21 to swing back and forth synchronously. At this time, the smoothing plate 21 can efficiently smooth the flux and make the flux spread more evenly.

[0029] Example 3: Unlike Example 2, by using a rotating component, the flux-spraying plate 26 and the rotating shaft 25 are always rotating in one direction, thus uniformly spraying the flux and simplifying the operation of the smoothing plate 21. Figures 7-10 As shown, the spraying plate 26 is set inside the discharge pipe 6 by a rotating assembly to evenly spread the flux. The rotating assembly includes a first magnet 22 fixedly connected to the upper surface of the flat plate 21, a lower connecting rod 23 fixedly connected to the lower surface of the operation box 7, and a movable plate 28 slidably arranged on the surface of the lower connecting rod 23. A second magnet 30 is fixedly connected to the lower surface of the movable plate 28, and the magnetic poles of the lower surface of the second magnet 30 are the same as the magnetic poles of the upper surface of the first magnet 22. A lever 29 is fixedly connected to the side of the movable plate 28.

[0030] An inner connecting plate 24 is fixedly connected to the inner wall of the discharge pipe 6, and a rotating shaft 25 is rotatably arranged inside the inner connecting plate 24. A spraying plate 26 is fixedly connected to the upper surface of the rotating shaft 25. In addition, a groove 27 is opened on the surface of the rotating shaft 25. The groove 27 is an inclined ring structure, and the lever 29 is a bent structure. At the same time, the end of the lever 29 is located inside the groove 27.

[0031] When the sliding plate 21 swings, it causes the first magnet 22 to move synchronously, resulting in an intermittent change in the distance between the first magnet 22 and the second magnet 30. When the first magnet 22 approaches the second magnet 30, the movable plate 28 rises under the action of mutual repulsive magnetic force, and when the first magnet 22 moves away from the second magnet 30, the movable plate 28 descends under the action of its own gravity. This process is repeated, and the movable plate 28 reciprocates in the vertical direction under the action of mutual repulsive magnetic force, its own gravity, and the lower connecting rod 23. In linear motion, the movable plate 28 will drive the lever 29 to move synchronously. The cooperation between the lever 29 and the groove 27 will drive the rotating shaft 25 to rotate in the same direction inside the inner plate 24. Then, the spraying plate 26 on the upper surface of the rotating shaft 25 can spray the flux that comes into contact with it, making the flux more evenly distributed, thereby optimizing the effect of spreading the flux. After the flux is evenly sprayed, the work of the smoothing plate 21 is also simplified. That is, the spraying plate 26, the smoothing plate 21 and the striking rod 15 cooperate to make the flux evenly spread.

[0032] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can 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 gantry submerged arc welding machine for manufacturing power transmission towers, comprising a movable frame (1), the movable frame (1) being mounted on a slide rail, and an auxiliary plate (2) being fixedly connected to the upper surface of the movable frame (1), and a working plate (3) being fixedly connected to the surface of the auxiliary plate (2), and a sliding plate (4) being slidably mounted on the surface of the working plate (3). A box for storing flux is fixed to the front side of the slide plate (4), and a transfer box (5) is fixedly connected to the lower surface of the slide plate (4). The transfer box (5) is connected to the box through a conveying pipe. In addition, an adsorption pipe is provided on the side of the transfer box (5), and a discharge pipe (6) is provided on the other side of the transfer box (5). An operation box (7) is fixedly connected to the lower surface of the transfer box (5), and a welding module is provided on the lower surface of the operation box (7). Its features are: A fixed plate (8) is fixedly connected to the side of the operating box (7), and the fixed plate (8) and the operating box (7) are connected by a knocking rod (15) through a lifting assembly. In addition, a compression ring (16) is movably provided on the side of the operating box (7). The long pin (17) is connected to the operating box (7) via a rotating assembly, and a flat plate (21) is fixedly connected to the lower surface of the long pin (17); the spraying plate (26) is set inside the discharge pipe (6) via a rotating assembly to evenly spread the flux.

2. The gantry submerged arc welding machine for manufacturing power transmission towers according to claim 1, characterized in that: The lifting assembly includes a motor (9) fixedly connected to the outer wall of the fixed plate (8), and a circular plate (12) is fixedly connected to the output end of the motor (9), and a connecting rod (13) is fixedly connected to the surface of the circular plate (12).

3. The gantry submerged arc welding machine for manufacturing power transmission towers according to claim 2, characterized in that: The surface of the connecting rod (13) is fitted with a movable frame (14), and the lower surface of the movable frame (14) is fixedly connected with the striking rod (15). In addition, a limit plate (10) is fixedly connected to the outer wall of the operating box (7).

4. A gantry submerged arc welding machine for manufacturing power transmission towers according to claim 3, characterized in that: The striking rod (15) and the limiting plate (10) are connected through sliding connection. In addition, the extrusion ring (16) is fixedly connected to the upper surface of the movable frame (14). The middle part of the discharge pipe (6) is made of rubber, and the diameter of the rubber part of the discharge pipe (6) is larger than the diameter of the extrusion ring (16).

5. A gantry submerged arc welding machine for manufacturing power transmission towers according to claim 1, characterized in that: The rotary assembly includes an outer plate (11) fixedly connected to the surface of the operating box (7), and the long pin (17) is rotatably arranged inside the outer plate (11), and a force plate (19) is fixedly connected to the surface of the long pin (17).

6. A gantry submerged arc welding machine for manufacturing power transmission towers according to claim 5, characterized in that: The force plate (19) is spiral-shaped. In addition, a push rod (18) is fixedly connected to the side of the striking rod (15). The top view of the push rod (18) is an inverted "L" structure, and the end of the push rod (18) is in contact with the lower surface of the force plate (19).

7. A gantry submerged arc welding machine for manufacturing power transmission towers according to claim 5, characterized in that: A torsion spring (20) is fixedly connected to the surface of the long pin (17), and the other side of the torsion spring (20) is fixedly connected to the inner wall of the outer plate (11).

8. A gantry submerged arc welding machine for manufacturing power transmission towers according to claim 1, characterized in that: The rotating assembly includes a first magnet (22) fixedly connected to the upper surface of the flat plate (21), a lower connecting rod (23) fixedly connected to the lower surface of the operation box (7), and a movable plate (28) slidably disposed on the surface of the lower connecting rod (23).

9. A gantry submerged arc welding machine for manufacturing power transmission towers according to claim 8, characterized in that: The lower surface of the movable plate (28) is fixedly connected to a second magnet (30), and the magnetic poles on the lower surface of the second magnet (30) are the same as the magnetic poles on the upper surface of the first magnet (22). A lever (29) is fixedly connected to the side of the movable plate (28).

10. A gantry submerged arc welding machine for manufacturing power transmission towers according to claim 9, characterized in that: An inner plate (24) is fixedly connected to the inner wall of the discharge pipe (6), and a rotating shaft (25) is rotatably provided inside the inner plate (24). A spraying plate (26) is fixedly connected to the upper surface of the rotating shaft (25). In addition, a groove (27) is provided on the surface of the rotating shaft (25). The groove (27) is an inclined ring structure, and the lever (29) is a bent structure. At the same time, the end of the lever (29) is located inside the groove (27).

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