A steel pipe and flange alignment welding device for a power transmission tower

Abstract

The application relates to a steel pipe and flange alignment welding device of a power transmission tower, and belongs to the technical field of steel pipe and flange welding. The device comprises a fixed base, a rotating base rotatably arranged at the center of the fixed base, a steel pipe support frame arranged on the upper side of the fixed base, a steel pipe body arranged on the upper side of the steel pipe support frame, a four-way telescopic mechanism arranged on the upper side of the rotating base, a mounting disc arranged at each end of the four-way telescopic mechanism, an outer side swivel ring seat rotatably arranged on one side edge of each mounting disc, an inner side swivel ring seat rotatably arranged on the middle of one side of each mounting disc, an outer side welding mechanism and an outer side polishing mechanism arranged on one side of the outer side swivel ring seat, and an inner side welding mechanism and an inner side polishing mechanism arranged on one side of the inner side swivel ring seat. The inner side polishing mechanism and the outer side polishing mechanism of the device polish rust layers on the end portions and the inner and outer welding arc surfaces of the flange body and the steel pipe body, so that the welding quality in the subsequent process is improved.

Description

Technical Field

[0001] This invention belongs to the field of steel pipe and flange welding technology, specifically relating to a steel pipe and flange alignment welding device for power transmission towers. Background Technology

[0002] With the continuous development of society and the accelerated pace of infrastructure construction, more and more power infrastructure is being built. With the development of power grid construction, the voltage level of transmission lines is getting higher and higher, the transmission capacity is getting larger and larger, and the load on the towers and substation structures is constantly increasing. The requirements for the safety, reliability and economy of the lines are getting higher and higher. In particular, the quality of the welding of steel pipes and flanges of transmission towers is directly related to the stability of transmission lines.

[0003] For example, in Chinese invention patent CN116652513B, entitled "A Welding Workstation for a Pyramidal Steel Pipe Flange for Transmission Towers," the specific components include a closed-loop rotary clamping seat for clamping and supporting the front end of the pyramidal steel pipe and capable of driving the pyramidal steel pipe to rotate 360°; a floating support device for supporting the rear end of the pyramidal steel pipe and capable of adjusting the height of the rear end of the supporting pyramidal steel pipe so that the axis of the pyramidal steel pipe is perpendicular to its rotation plane; at least one welding robotic arm A for welding the outer gap and triangular rib between the pyramidal steel pipe and the flange; and at least two welding robotic arms B, located respectively in front of the closed-loop rotary clamping seat and behind the floating support device, for... Regarding the internal gap between the welded pyramidal steel pipe and the flange, although the existing technology can fully ensure the stability of the steel pipe's rotation plane during the welding process and prevent skewing, thus improving welding quality, the flange and the steel pipe of the transmission tower are generally produced separately and are usually made of steel. To prevent rust from forming on the steel pipes of the flange and the transmission tower, rust inhibitors are usually sprayed on the surface at the factory to form a rust-proof layer. However, during the welding process, the rust-proof layer at the welding point can affect the welding quality. In order to remove the rust-proof layer from the ends of the steel pipes of the flange and the transmission tower and the area near the weld before welding, a welding device for aligning the steel pipes and flanges of the transmission tower is needed. Summary of the Invention

[0004] The purpose of this invention is to provide a device for aligning and welding steel pipes and flanges of power transmission towers in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A welding device for aligning steel pipes and flanges of a power transmission tower includes a fixed base, a rotating base rotatably mounted at the center of the fixed base, a drive mechanism for rotating the rotating base fixedly mounted on the upper side of the fixed base, a steel pipe support frame mounted on the upper side of the steel pipe support frame, and a steel pipe body fixed by steel pipe clamps mounted on the upper side of the rotating base. A four-way telescopic mechanism is mounted on the upper side of the rotating base, simultaneously driving several flange bodies to align with one end of several steel pipe bodies. Each of the four ends of the four-way telescopic mechanism has a mounting plate, an outer rotating ring seat rotatably mounted on one side edge of each mounting plate, and an inner rotating ring seat rotatably mounted on the center of one side of each mounting plate. An outer welding mechanism and an outer grinding mechanism are provided on one side of the seat, and an inner welding mechanism and an inner grinding mechanism are provided on one side of the inner rotating ring seat. An outer rotating mechanism for driving the outer rotating ring seat to rotate is provided at the upper end of the mounting plate, and an inner rotating mechanism for driving the inner rotating ring seat to rotate is provided in the middle of the mounting plate. Several flange positioning mechanisms located between the outer and inner rotating ring seats are provided on one side of the mounting plate. When the four-way telescopic mechanism drives several flange bodies to approach one end of several steel pipe bodies respectively, the rust-proof layer is first removed by grinding the welding end face and inner and outer arc surfaces through the outer grinding mechanism and the inner grinding mechanism, and then the inner and outer welding are performed simultaneously through the outer welding mechanism and the inner welding mechanism.

[0007] As a further optimization of the present invention, the four-way telescopic mechanism includes a plurality of first guide seats and a plurality of second guide seats fixedly disposed on the upper side of the rotating base. Each first guide seat and each second guide seat has a first sliding groove and a second sliding groove respectively formed on its inner side. A first slider and a second slider are slidably disposed on the inner side of each first sliding groove and a second slider respectively. A first slide block and a second slide block are fixedly disposed on the upper side of each first slider and a second slide block respectively, sliding on the upper side of the first guide seat and the second slider. A first fixed shaft and a second fixed shaft are fixedly disposed on the upper side of each first slide block and a second fixed shaft respectively. Each mounting plate is respectively fixed... The first and second fixed shafts are respectively provided at one end of each first slider and several second sliders. A first rack and a second rack are respectively fixedly provided on the side wall. A rotating shaft is rotatably provided at the upper center of the rotating base. A first rotating gear that meshes with each first rack is fixedly sleeved on the rotating shaft. A second rotating gear that meshes with several second racks is fixedly sleeved on the rotating shaft. A fixed frame is fixedly provided on the upper side of the rotating base. A first servo motor is fixedly provided on the upper side of the fixed frame. A reducer fixed on the upper side of the fixed frame is provided at the output end of the first servo motor. The output end of the reducer is fixedly connected to the rotating shaft.

[0008] As a further optimization of the present invention, the flange positioning mechanism includes a positioning column fixedly disposed between the outer rotating ring seat and the inner rotating ring seat. The positioning column has a guide groove on its arc surface. A limit plate is slidably disposed on the inner side of the guide groove. One end of the limit plate extends out of the arc surface of the positioning column. A reset spring is fixedly disposed on the inner side of the guide groove and fixedly connected to one side of the limit plate. The positioning column passes through a hole on the flange body.

[0009] As a further optimization of the present invention, the outer welding mechanism includes an outer welding fixing plate fixedly disposed on one side of the outer rotating ring seat, an outer welding electric telescopic rod fixedly disposed on the upper side of the outer welding fixing plate, and an outer welding gun located below the outer welding fixing plate fixedly disposed at the output end of the outer welding electric telescopic rod.

[0010] As a further optimization of the present invention, the outer grinding mechanism includes an outer grinding fixing plate fixedly disposed on one side of the outer rotating seat, an outer grinding electric telescopic rod fixedly disposed on the lower side of the outer grinding fixing plate, and an outer grinding head located above the outer grinding fixing plate fixedly disposed at the output end of the outer grinding electric telescopic rod.

[0011] As a further optimization of the present invention, the outer rotating mechanism includes an outer servo motor fixedly mounted on the upper end of the mounting plate, an outer gear fixedly mounted on the output end of the outer servo motor, and an outer gear ring meshing with the outer gear is fixedly sleeved on the outer arc surface of the outer rotating ring seat.

[0012] As a further optimization of the present invention, the inner welding mechanism includes an inner welding fixing plate fixedly disposed on one side of the inner rotating ring seat, an inner welding electric telescopic rod fixedly disposed on the lower side of the inner welding fixing plate, and an inner welding gun located above the inner welding fixing plate fixedly disposed at the output end of the inner welding electric telescopic rod.

[0013] As a further optimization of the present invention, the inner grinding mechanism includes an inner grinding fixing plate fixedly disposed on one side of the inner rotating ring seat, an inner grinding electric telescopic rod fixedly disposed on the upper side of the inner grinding fixing plate, and an inner grinding head located below the inner grinding fixing plate fixedly disposed at the output end of the inner grinding electric telescopic rod.

[0014] As a further optimization of the present invention, the inner rotating mechanism includes an inner servo motor fixedly disposed at the center of the mounting plate, an inner gear fixedly disposed at the output end of the inner servo motor, and an inner gear ring meshing with the inner gear fixedly disposed on the inner arc surface of the inner rotating ring seat.

[0015] As a further optimization of the present invention, the driving mechanism includes a second servo motor fixedly mounted on the upper side of the fixed base, a drive gear fixedly mounted on the output end of the second servo motor, a drive shaft rotatably connected to the fixed base fixedly mounted on the bottom of the rotating base, a driven gear meshing with the drive gear fixedly mounted on the outer side of the drive shaft, an external ultrasonic flaw detector fixedly mounted on one side of the outer rotating ring seat, and an internal ultrasonic flaw detector fixedly mounted on one side of the inner rotating ring seat.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention uses an external grinding head and an internal grinding head to grind away the anti-rust layer on the ends of the flange body and the steel pipe body, as well as the inner and outer welding arc surfaces, thereby improving the subsequent welding quality. Furthermore, the internal and external welding guns allow for simultaneous welding of the inner and outer surfaces, eliminating welding stress and improving welding quality.

[0018] 2. This invention improves welding quality by simultaneously welding four sets of flanges and steel pipe bodies. Furthermore, by placing the flange body on the mounting plate, the flange body moves together with the welding head, thereby improving the connection accuracy between the flange body and the steel pipe body and enhancing welding quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0021] Figure 3 This is a partial overall structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the first overall structure of the four-way telescopic mechanism in this invention;

[0023] Figure 5 This is a schematic diagram of the second overall structure of the four-way telescopic mechanism in this invention;

[0024] Figure 6 This is a schematic diagram of the overall structure of the four-way telescopic mechanism and the drive mechanism in this invention;

[0025] Figure 7 This is a schematic diagram of the third overall structure of the four-way telescopic mechanism in this invention;

[0026] Figure 8 This is a schematic diagram of the fourth overall structure of the four-way telescopic mechanism in this invention;

[0027] Figure 9This is a schematic diagram of the overall structure of the outer rotating mechanism, outer welding mechanism, flange positioning mechanism, inner rotating mechanism, inner welding mechanism, inner grinding mechanism and outer grinding mechanism in this invention;

[0028] Figure 10 This is a schematic diagram of the first overall structure of the outer rotating mechanism, the outer welding mechanism, and the outer grinding mechanism in this invention;

[0029] Figure 11 This is a schematic diagram of the second overall structure of the outer rotating mechanism, the outer welding mechanism, and the outer grinding mechanism in this invention;

[0030] Figure 12 This is a schematic diagram of the overall structure of the inner rotating mechanism, the inner welding mechanism and the inner grinding mechanism in this invention;

[0031] Figure 13 This is a schematic diagram of the overall structure of the flange positioning mechanism in this invention;

[0032] Figure 14 In this invention Figure 1 Enlarged view of point A in the middle.

[0033] In the picture:

[0034] 1. Rotate the base; 2. Mounting plate;

[0035] 3. Four-way telescopic mechanism; 301. First guide seat; 302. First slider; 303. First slide block; 304. First fixed shaft; 305. First slide groove; 306. First rack; 307. Second guide seat; 308. Second slider; 309. Second rack; 310. Second slide block; 311. Second slide groove; 312. Rotating shaft; 313. First rotating gear; 314. Second rotating gear; 315. Second fixed shaft; 316. Fixed frame; 317. First servo motor; 318. Reducer;

[0036] 4. Outer swivel seat;

[0037] 5. Outer rotating mechanism; 501. External gear ring; 502. External gear; 503. External servo motor;

[0038] 6. External welding mechanism; 601. External welding fixing plate; 602. External welding electric telescopic rod; 603. External welding gun;

[0039] 7. Flange positioning mechanism; 701. Positioning post; 702. Limiting plate; 703. Return spring; 704. Guide groove;

[0040] 8. Inner rotating ring seat;

[0041] 9. Inner rotating mechanism; 901. Internal gear ring; 902. Internal gear; 903. Internal servo motor;

[0042] 10. Inner welding mechanism; 1001. Inner welding fixing plate; 1002. Inner welding electric telescopic rod; 1003. Inner welding gun;

[0043] 11. Inner grinding mechanism; 1101. Inner grinding fixing plate; 1102. Inner grinding electric telescopic rod; 1103. Inner grinding head;

[0044] 12. External grinding mechanism; 1201. External grinding fixing plate; 1202. External grinding electric telescopic rod; 1203. External grinding head;

[0045] 13. Drive mechanism; 1301. Drive shaft; 1302. Driven gear; 1303. Drive gear; 1304. Second servo motor;

[0046] 14. Steel pipe support frame; 15. Steel pipe clamp; 16. Steel pipe body; 17. Flange body; 18. Fixed base; 19. External ultrasonic flaw detector; 20. Internal ultrasonic flaw detector. Detailed Implementation

[0047] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0048] Example 1: As Figure 1 , Figure 2 As shown, a welding device for aligning steel pipes and flanges of a power transmission tower includes a fixed base 18. The fixed base 18 adopts a cross structure. Each of the four supports of the cross structure of the fixed base 18 is equipped with a steel pipe support frame 14. The upper side of the steel pipe support frame 14 adopts an arc plate to facilitate the support of the steel pipe. A steel pipe clamp 15 is provided on the upper side of the steel pipe support frame 14. The steel pipe clamp 15 adopts an arc clamp. One end of the arc clamp is rotatably connected to the side wall of the steel pipe support frame 14 by a pin. The other side of the arc clamp is fixed to the other side wall of the steel pipe support frame 14 by bolts. The four steel pipe bodies 16 are respectively hoisted to the upper side of the four steel pipe support frames 14 by hoisting equipment (not shown in the figure). Then, the steel pipe bodies 16 are fixed to the upper side of the steel pipe support frame 14 by the steel pipe clamps 15, which serves to position the steel pipe bodies 16 and prevent the position of the steel pipe bodies 16 from shaking during the welding process, so as to avoid affecting the welding accuracy.

[0049] like Figure 1 , Figure 2 , Figure 4, Figure 5 , Figure 7 , Figure 8 As shown, to improve the simultaneous welding of four flange bodies 16 and steel pipe bodies 17, a rotating base 1 is rotatably mounted at the center of the fixed base 18. A four-way telescopic mechanism 3 is mounted on the upper side of the rotating base 1, which simultaneously drives the four flange bodies 17 to align with one end of the four steel pipe bodies 16. The four-way telescopic mechanism 3 includes two first guide seats 301 and two second guide seats 307 fixedly mounted on the upper side of the rotating base 1. The two first guide seats 301 are symmetrically arranged along the center line of the rotating base 1, and the two second guide seats 307 are symmetrically arranged along the center line of the rotating base 1. The line connecting the two first guide seats 301 is perpendicular to the line connecting the two second guide seats 307, meaning the two first guide seats 301 and the two second guide seats 307 are circumferentially equidistant. A first groove 30 is formed on the inner side of each of the two first guide seats 301. 5. Two first guide seats 301 have second sliding grooves 311 on their inner sides. Two first sliding grooves 305 have first sliders 302 slidably arranged on their inner sides. Two second sliding grooves 311 have second sliders 308 slidably arranged on their inner sides. Two first sliders 302 have first slide blocks 303 fixedly arranged on their upper sides, which slide on the upper side of the first guide seats 301. Two second slide blocks 308 have second slide blocks 310 fixedly arranged on their upper sides, which slide on the upper side of the second guide seats 307. Two first slide blocks 303 have first fixed shafts 304 fixedly arranged on their upper sides. Two second slide blocks 310 have second fixed shafts 315 fixedly arranged on their upper sides. One end of each of the two first fixed shafts 304 and the two second fixed shafts 315 is connected to a mounting plate 2 via a flange. The flange connection facilitates the replacement of the mounting plate 2. The four mounting plates 2 are equidistantly arranged along the central circumference of the rotating base 1.

[0050] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8As shown, in order to allow the two first fixed shafts 304 and the two second fixed shafts 315 to slide outward or inward simultaneously, first racks 306 are fixedly installed on the side walls of the two first sliders 302 respectively, and the first racks 306 on the side walls of the two first sliders 302 are installed in opposite directions, that is, one first rack 306 is located on the left side of one first slider 302, and the other first rack 306 is located on the right side of the other first slider 302, so that the teeth of the two first racks 306 are arranged opposite to each other. Second racks 309 are fixedly installed on the side walls of the two second sliders 308 respectively, and similarly, two second racks 309 are also fixedly installed on the side walls of the two second sliders 308. 9 is also arranged in the opposite way, and the two first racks 306 and the two second racks 309 are staggered vertically so as not to affect each other's movement. A rotating shaft 312 is vertically rotatably mounted on the upper center of the rotating base 1. A first rotating gear 313 that meshes with both first racks 306 is fixedly mounted on the rotating shaft 312. A second rotating gear 314 that meshes with both second racks 309 is fixedly mounted on the rotating shaft 312. The first rotating gear 313 is located above the second rotating gear 314. A fixing frame 316 is fixedly mounted on the upper side of the rotating base 1. The fixing frame 316 adopts a gantry structure. A first... The first servo motor 317 is connected to the controller via signal. A reducer 318, fixed to the upper side of the mounting bracket 316, is mounted on the output end of the first servo motor 317. The output end of the reducer 318 is fixedly connected to the rotating shaft 312. In use, the controller controls the first servo motor 317 to run, which in turn drives the rotating shaft 312 to rotate via the reducer 318. This causes the first rotating gear 313 and the second rotating gear 314 on the rotating shaft 312 to rotate simultaneously. Since the first rotating gear 313 meshes with the two first racks 306 in opposite directions, it can drive the two first racks 306 to move closer and further apart. Similarly, the second rotating gear... When 314 meshes with the two second racks 309 in opposite directions, it can cause the two second racks 309 to move closer to each other and further away from each other. Ultimately, it causes the two first racks 306 and the two second racks 309 to slide towards the center or outwards, so that the two first sliders 302 and the two second sliders 308 slide towards the center or outwards along the first guide seat 301 and the second guide seat 307, respectively. Ultimately, it causes the two first fixed shafts 304 and the two second fixed shafts 315 to slide towards the center of the rotating base 1 or outwards, so that the four mounting plates 2 can move away from each other or move closer to each other at the same time.

[0051] This solution can be implemented by setting two first guide seats 301 and two second guide seats 307. Alternatively, it can be implemented by setting six, eight, or other even numbers of guide seats. The settings on the guide seats are the same as described above and can also be achieved through this solution. They will not be described in detail here.

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 10 , Figure 11 , Figure 14 As shown, in order to weld the flange to the outer welding surface of the steel pipe, an outer rotating ring seat 4 is rotatably installed on one side edge of the four mounting plates 2. The outer rotating ring seat 4 has a T-shaped cross-section and a circular ring shape. An outer ultrasonic flaw detector 19 is fixedly installed on one side of the outer rotating ring seat 4. The outer ultrasonic flaw detector 19 can detect the quality of the external welding. An outer welding mechanism 6 is installed on one side of the outer rotating ring seat 4. The outer welding mechanism 6 includes an outer welding fixing plate 601 fixedly installed on one side of the outer rotating ring seat 4. An outer welding electric telescopic rod 602 is fixedly installed on the upper side of the outer welding fixing plate 601. An outer welding gun 603 located below the outer welding fixing plate 601 is fixedly installed at the output end of the outer welding electric telescopic rod 602. The power supply end of the outer welding gun 603 passes through the mounting plate 2 through a wire for easy electrical connection with the control system. During welding, the outer welding electric telescopic rod 602 can move the outer welding gun 603 away from or closer to the welding surface of the flange and the outer side of the steel pipe, so that the outer welding gun 603 can accurately weld the outer welding surface.

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 10 , Figure 11 , Figure 14 As shown, in order to remove the anti-rust layer on the welded surface of the flange and the outer wall of the steel pipe, an outer grinding mechanism 12 is provided on one side of the outer rotating seat 4. The outer grinding mechanism 12 includes an outer grinding fixing plate 1201 fixedly installed on one side of the outer rotating seat 4. An outer grinding electric telescopic rod 1202 is fixedly installed on the lower side of the outer grinding fixing plate 1201. An outer grinding head 1203 located above the outer grinding fixing plate 1201 is fixedly installed at the output end of the outer grinding electric telescopic rod 1202. When the flange and the steel pipe are aligned and fitted, that is, before welding, the outer grinding head 1203 is driven by the outer grinding electric telescopic rod 1202 to fit the outer welded surface of the flange and the steel pipe. Then, by rotating the outer rotating seat 4, the outer grinding head 1203 can be driven to grind the outer welded surface, so that the anti-rust layer on the surface of the flange and the steel pipe is removed, exposing the metal layer of the flange and the steel pipe, which facilitates subsequent welding and improves the welding quality.

[0054] like Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 10 , Figure 11 , Figure 14As shown, in order to drive the outer rotating seat 4 to rotate on one side of the mounting plate 2, an outer rotating mechanism 5 is provided at the upper end of the mounting plate 2. The outer rotating mechanism 5 includes an outer servo motor 503 fixedly installed at the upper end of the mounting plate 2. The outer servo motor 503 is connected to the control system signal. An outer gear 502 is fixedly installed at the output end of the outer servo motor 503. An outer gear ring 501 that meshes with the outer gear 502 is fixedly sleeved on the outer arc surface of the outer rotating seat 4. After the flange and the steel pipe are aligned and fitted, the outer gear 502 is driven to rotate by the outer servo motor 503, which in turn drives the outer gear ring 501 to rotate, causing the outer rotating seat 4 to rotate circumferentially on one side of the mounting plate 2. This allows the outer welding gun 603 and the outer grinding head 1203 on the outer rotating seat 4 to rotate circumferentially along the outer welding surface of the flange and the steel pipe, so that the outer anti-rust layer grinding and the outer welding are carried out simultaneously, improving the welding efficiency.

[0055] like Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 12 , Figure 14 As shown, in order to weld the flange to the inner welding surface of the steel pipe, an inner rotating ring seat 8 is rotatably installed in the middle of one side of the four mounting plates 2. The inner rotating ring seat 8 adopts a T-shaped ring structure, which allows the inner rotating ring seat 8 to rotate stably inside the mounting plate 2. An inner ultrasonic flaw detector 20 is fixedly installed on one side of the inner rotating ring seat 8. The quality of the inner welding is detected by the housing of the inner ultrasonic flaw detector 20. An inner welding mechanism 10 is provided on one side of the inner rotating ring seat 8. The inner welding mechanism 10 includes components fixedly installed on the inner rotating ring seat. An inner welding fixing plate 1001 is fixed on one side of the inner welding fixing plate 1001. An inner welding electric telescopic rod 1002 is fixedly installed on the lower side of the inner welding fixing plate 1001. An inner welding gun 1003 located above the inner welding fixing plate 1001 is fixedly installed at the output end of the inner welding electric telescopic rod 1002. The power supply end of the inner welding gun 1003 is electrically connected to the external control system through a wire passing through the mounting plate 2. During welding, the inner welding electric telescopic rod 1002 can drive the inner welding gun 1003 to move closer to or away from the welding surface between the flange and the inner side of the steel pipe, thereby improving the welding accuracy.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 12 , Figure 14As shown, in order to grind away the anti-rust layer on the ends and inner arc surfaces of the flange body 17 and the steel pipe body 16, an inner grinding mechanism 11 is provided on one side of the inner swivel seat 8. The inner grinding mechanism 11 includes an inner grinding fixing plate 1101 fixedly installed on one side of the inner swivel seat 8. An inner grinding electric telescopic rod 1102 is fixedly installed on the upper side of the inner grinding fixing plate 1101. An inner grinding head 1103 located below the inner grinding fixing plate 1101 is fixedly installed at the output end of the inner grinding electric telescopic rod 1102. In this solution, the inner grinding head 1103 adopts a T-shaped cross-section structure. Before welding, that is, when the flange body 17 is about to approach the steel pipe body 16... When one end is in place, a gap is left between the end of the flange body 17 and the end of the steel pipe body 16. At this time, the T-shaped inner grinding head 1103 is inserted into the gap by the electric telescopic rod 1102 for internal grinding. This allows the inner grinding head 1103 to fit tightly against both the end of the flange body 17 and the end of the steel pipe body 16. It can also fit tightly against the inner side of the flange body 17 and the inner side of the steel pipe body 16 near the welding area. Then, by rotating the inner rotating ring seat 8, the inner grinding head 1103 can grind the ends of the flange body 17 and the steel pipe body 16 and the inner side near the welding surface, so that the anti-rust layer on the surface is ground off, which facilitates the improvement of subsequent welding quality.

[0057] like Figure 1 , Figure 2 , Figure 3 , Figure 9 , Figure 12 , Figure 14 As shown, in order to drive the inner rotating seat 8 to rotate around the mounting plate 2, an inner rotating mechanism 9 is provided in the middle of the mounting plate 2. The inner rotating mechanism 9 includes an inner servo motor 903 fixedly installed in the center of the mounting plate 2. The inner servo motor 903 is connected to the external control system signal through a wire passing through the mounting plate 2. An inner gear 902 is fixedly installed at the output end of the inner servo motor 903. An inner gear ring 901 that meshes with the inner gear 902 is fixedly installed on the inner arc surface of the inner rotating seat 8. During grinding or welding, the inner gear 902 can be driven to rotate by the inner servo motor 903, which in turn drives the inner gear ring 901 to rotate, and finally drives the inner rotating seat 8 to rotate circumferentially on one side of the mounting plate 2. This allows the inner grinding head 1103 and the inner welding gun 1003 on one side of the inner rotating seat 8 to grind and weld the inner welding surface, thereby improving the welding quality and welding efficiency.

[0058] like Figure 1 , Figure 2 , Figure 3 , Figure 13 , Figure 14As shown, in order to limit the flange body 17 and facilitate its subsequent alignment and positioning on one end of the steel pipe body 16, several flange positioning mechanisms 7 are provided on one side of the mounting plate 2, located between the outer swivel seat 4 and the inner swivel seat 8. This design provides two flange positioning mechanisms 7, symmetrically arranged along the center of the mounting plate 2. The specific number of flange positioning mechanisms 7 can be selected based on the number of holes on the flange body 17 and the weight of the flange body 17. Generally, the number of holes on the flange body 17 is even, so the number of flange positioning mechanisms 7 is also generally even and symmetrically arranged. Each flange positioning mechanism 7 includes a positioning post 701 fixedly installed between the outer swivel seat 4 and the inner swivel seat 8. One end of the positioning post 701 raises the flange base and connects it to the mounting plate 2, facilitating flexible selection of different diameters based on the size of the holes on the flange body 17. The thin positioning post 701 improves the practicality of the device. The positioning post 701 passes through the hole on the flange body 17, and the diameter of the positioning post 701 is the same as the diameter of the hole on the flange body 17, so that the flange body 17 will not wobble when inserted into the positioning post 701. The arc surface of the positioning post 701 has a guide groove 704. A limit plate 702 is slidably installed on the inner side of the guide groove 704. One end of the limit plate 702 extends out of the arc surface of the positioning post 701, so that the side wall of the flange body 17 can fit against one side of the limit plate 702. A return spring 703 is fixedly installed on the inner side of the guide groove 704 and fixedly connected to one side of the limit plate 702. When installing the flange body 17, the hole on the flange body 17 is passed through two positioning posts 701 at the same time, and then one side of the flange body 17 is fitted against one side of the limit plate 702. The flange body 17 can be limited by the two positioning posts 701.

[0059] like Figure 1 , Figure 2 , Figure 3 , Figure 6As shown, when there are insufficient workers for welding the steel pipes and flanges of the transmission tower, or due to different processes, a drive mechanism 13 for driving the rotating base 1 to rotate can be fixedly installed on the upper side of the fixed base 18. The drive mechanism 13 includes a second servo motor 1304 fixedly installed on the upper side of the fixed base 18. The second servo motor 1304 is connected to the control system signal through a junction box on it. The control system can precisely control the speed and rotation angle of the second servo motor 1304. A drive gear 1303 is fixedly installed at the output end of the second servo motor 1304. A drive shaft 1301 rotatably connected to the fixed base 18 is fixedly installed at the bottom of the rotating base 1. A driven gear 1302 that meshes with the drive gear 1303 is fixedly sleeved on the outer side of the drive shaft 1301. In use, the second servo motor 1304 drives the drive gear 1303 at its output end to rotate, which in turn drives the driven gear 1302 to rotate, thereby driving the drive shaft 1301. Rotating the 01 shaft drives the rotating base 1 at the top of the drive shaft 1301 to rotate. The second servo motor 1304 rotates the base 1 by a specific angle, which in turn controls the rotation of the base 1 to a specific angle. This facilitates the subsequent alignment and welding of the flanges and the steel pipes of the transmission tower. It also allows for the alignment and welding of two opposing flange bodies 17 and steel pipe bodies 16. For example, by driving the drive gear 1303 at the output end of the second servo motor 1304 to rotate 90°, the driven gear 1302, drive shaft 1301, and rotating base 1 can rotate the mounting plate 2 by 90°, facilitating the grinding and welding of another set of flange bodies 17 and steel pipe bodies 16. This allows welding and the installation of the steel pipe bodies 16 on the steel pipe support frame 14 to be carried out simultaneously, improving welding efficiency. In addition, two symmetrical sets of steel pipe bodies 16 can be installed, allowing four sets of flange bodies 17 and four sets of steel pipe bodies 16 to be aligned and welded in batches, improving the practicality of the alignment and welding device.

[0060] It should be noted that, in the use of this type of steel pipe and flange alignment welding device for power transmission towers, the holes on the four flange bodies 17 are first inserted into the four sets of two positioning columns 701 respectively. Then, the four steel pipe bodies 16 are hoisted onto the upper side of the four steel pipe support frames 14 by hoisting equipment. Then, the steel pipe bodies 16 are fixed to the upper side of the steel pipe support frames 14 by steel pipe clamps 15. Next, the first servo motor 317 runs, which in turn drives the rotating shaft 312 to rotate through the reducer 318, so that the first rotating gear on the rotating shaft 312 rotates. When wheel 313 and the second rotating gear 314 rotate simultaneously, they drive the two first racks 306 and the two second racks 309 to move away from each other. This causes the two first sliders 302 and the two second sliders 308 to slide outwards along the first guide seat 301 and the second guide seat 307, respectively. Ultimately, this causes the two first fixed shafts 304 and the two second fixed shafts 315 to slide outwards from the rotating base 1, thereby causing the four mounting plates 2 to move away from each other simultaneously. This also causes the four sets of positioning pins 701 on the four mounting plates 2 to... The four flange bodies 17 move closer to the steel pipe body 16. When the flange body 17 is about to approach one end of the steel pipe body 16, the first servo motor 317 stops running, leaving a gap between the end of the flange body 17 and the end of the steel pipe body 16. At this time, the T-shaped inner grinding head 1103 is inserted into the gap by the inner grinding electric telescopic rod 1102, so that the inner grinding head 1103 is tightly fitted with both the end of the flange body 17 and the end of the steel pipe body 16, and the inner grinding head 1103 is in close contact with the inner side of the flange body 17 and the steel pipe. The flange body 17 is tightly fitted near the inner welding part of the body 16, and the limit plate 702 is driven by the reset spring 703 on the positioning column 701 to squeeze the flange body 17, so that the end face of the flange body 17 can tightly squeeze the inner grinding head 1103. Then, the inner servo motor 903 drives the inner gear 902 to rotate, which in turn drives the inner gear ring 901 to rotate, and finally drives the inner rotating ring seat 8 to rotate circumferentially on one side of the mounting plate 2, which can drive the inner grinding head 1103 to grind and rotate within the gap, so that the anti-rust layer on the end of the welding surface and the inner side is ground off.

[0061] Then, the external grinding head 1203 is driven by the external grinding electric telescopic rod 1202 to fit the flange and the outer welding surface of the steel pipe. Then, the external servo motor 503 drives the external gear 502 to rotate, which in turn drives the external gear ring 501 to rotate, and drives the outer rotating ring seat 4 to rotate circumferentially on one side of the mounting plate 2. This allows the external grinding head 1203 to grind away the anti-rust layer on the outer arc surface of the welding surface.

[0062] After grinding, the inner grinding electric telescopic rod 1102 drives the T-shaped inner grinding head 1103 to slide out of the gap. The outer grinding electric telescopic rod 1202 drives the outer grinding head 1203 away from the welding surface between the flange and the outer side of the steel pipe. Then, the first servo motor 317 continues to run, aligning and pressing the four flange bodies 17 with the steel pipe body 16. Then, the outer welding electric telescopic rod 602 drives the outer welding gun 603 to approach the welding surface between the flange and the outer side of the steel pipe. At the same time, the inner welding electric telescopic rod 1002 drives the inner welding gun 1003 to approach the welding surface between the flange and the inner side of the steel pipe. Then, the outer servo motor 503 drives the outer gear 5. The rotation of the outer gear ring 501 causes the outer rotating ring seat 4 to rotate circumferentially on one side of the mounting plate 2, which in turn drives the outer welding gun 603 on the outer rotating ring seat 4 to perform external welding. At the same time, the inner servo motor 903 drives the inner gear 902 to rotate, which in turn drives the inner gear ring 901 to rotate, and finally drives the inner rotating ring seat 8 to rotate circumferentially on one side of the mounting plate 2, so that the inner welding gun 1003 on one side of the inner rotating ring seat 8 welds the inner welding surface. Ultimately, the welding surfaces of the flange body 17 and the steel pipe body 16 are welded simultaneously, eliminating welding stress and improving welding quality. The simultaneous welding of four groups can improve welding efficiency.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A welding device for aligning steel pipes and flanges of a power transmission tower, comprising a fixed base (18), characterized in that: The fixed base (18) is rotatably provided with a rotating base (1) at its center. The fixed base (18) is fixedly provided with a driving mechanism (13) for driving the rotating base (1) to rotate. The fixed base (18) is provided with a steel pipe support frame (14) on its upper side. The steel pipe support frame (14) is provided with a steel pipe body (16) fixed by a steel pipe clamp (15) on its upper side. The upper side of the rotating base (1) is provided with a four-way telescopic mechanism (3) that simultaneously drives several flange bodies (17) to align with one end of several steel pipe bodies (16). Each of the four ends of the four-way telescopic mechanism (3) is provided with a mounting plate (2). An outer rotating ring seat (4) is rotatably provided on one side edge of each mounting plate (2). An inner rotating ring seat (8) is rotatably provided in the middle of one side of each mounting plate (2). An outer welding mechanism (6) and an outer... The grinding mechanism (12) is provided with an inner welding mechanism (10) and an inner grinding mechanism (11) on one side of the inner rotating ring seat (8). The upper end of the mounting plate (2) is provided with an outer rotating mechanism (5) that drives the outer rotating ring seat (4) to rotate. The middle part of the mounting plate (2) is provided with an inner rotating mechanism (9) that drives the inner rotating ring seat (8) to rotate. A plurality of flange positioning mechanisms (7) located between the outer rotating ring seat (4) and the inner rotating ring seat (8) are provided on one side of the mounting plate (2). When the four-way telescopic mechanism (3) drives several flange bodies (17) to approach one end of several steel pipe bodies (16), the anti-rust layer is first removed by grinding the welding end face and inner and outer arc surfaces through the outer grinding mechanism (12) and the inner grinding mechanism (11), and then the inner and outer welding are carried out simultaneously through the outer welding mechanism (6) and the inner welding mechanism (10).

2. The steel pipe and flange alignment welding device for a power transmission tower according to claim 1, characterized in that: The four-way telescopic mechanism (3) includes a plurality of first guide seats (301) and a plurality of second guide seats (307) fixedly disposed on the upper side of the rotating base (1). A first slide groove (305) and a second slide groove (311) are respectively opened on the inner side of each first guide seat (301) and each second guide seat (307). A first slider (302) and a second slider (308) are respectively slidably disposed on the inner side of each first slide groove (305) and the second slide groove (311). A first slide block (303) and a second slide block (310) are respectively fixedly disposed on the upper side of each first slide block (302) and the second slide block (308). A first fixed shaft (304) and a second fixed shaft (315) are respectively fixedly disposed on the upper side of each first slide block (303) and the second slide block (310). Each mounting plate (2) is respectively fixedly disposed on the first fixed shaft. (304) and one end of the second fixed shaft (315), each of the first slider (302) and each of the second slider (308) is respectively fixedly provided with a first rack (306) and a second rack (309), a rotating shaft (312) is rotatably provided in the middle of the upper side of the rotating base (1), a first rotating gear (313) is fixedly sleeved on the rotating shaft (312) and simultaneously meshes with each of the first racks (306), a second rotating gear (314) is fixedly sleeved on the rotating shaft (312) and simultaneously meshes with several second racks (309), a fixed frame (316) is fixedly provided on the upper side of the rotating base (1), a first servo motor (317) is fixedly provided on the upper side of the fixed frame (316), a reducer (318) is fixedly provided at the output end of the first servo motor (317) and fixedly connected to the upper side of the fixed frame (316), and the output end of the reducer (318) is fixedly connected to the rotating shaft (312).

3. The steel pipe and flange alignment welding device for a power transmission tower according to claim 1, characterized in that: The flange positioning mechanism (7) includes a positioning column (701) fixedly disposed between the outer rotating ring seat (4) and the inner rotating ring seat (8). The arc surface of the positioning column (701) is provided with a guide groove (704). A limit plate (702) is slidably disposed on the inner side of the guide groove (704). One end of the limit plate (702) extends out of the arc surface of the positioning column (701). A reset spring (703) is fixedly disposed on the inner side of the guide groove (704) and fixedly connected to one side of the limit plate (702). The positioning column (701) passes into the hole on the flange body (17).

4. The steel pipe and flange alignment welding device for a power transmission tower according to claim 1, characterized in that: The outer welding mechanism (6) includes an outer welding fixing plate (601) fixedly installed on one side of the outer rotating seat (4). An outer welding electric telescopic rod (602) is fixedly installed on the upper side of the outer welding fixing plate (601). An outer welding gun (603) located below the outer welding fixing plate (601) is fixedly installed at the output end of the outer welding electric telescopic rod (602).

5. The steel pipe and flange alignment welding device for a power transmission tower according to claim 4, characterized in that: The outer grinding mechanism (12) includes an outer grinding fixing plate (1201) fixedly installed on one side of the outer rotating seat (4). An outer grinding electric telescopic rod (1202) is fixedly installed on the lower side of the outer grinding fixing plate (1201). An outer grinding head (1203) located above the outer grinding fixing plate (1201) is fixedly installed at the output end of the outer grinding electric telescopic rod (1202).

6. The steel pipe and flange alignment welding device for a power transmission tower according to claim 5, characterized in that: The outer rotating mechanism (5) includes an outer servo motor (503) fixedly mounted on the upper end of the mounting plate (2). An outer gear (502) is fixedly mounted on the output end of the outer servo motor (503). An outer toothed ring (501) that meshes with the outer gear (502) is fixedly mounted on the outer arc surface of the outer rotating ring seat (4).

7. The steel pipe and flange alignment welding device for a power transmission tower according to claim 1, characterized in that: The inner welding mechanism (10) includes an inner welding fixing plate (1001) fixedly installed on one side of the inner rotating ring seat (8). An inner welding electric telescopic rod (1002) is fixedly installed on the lower side of the inner welding fixing plate (1001). An inner welding gun (1003) located above the inner welding fixing plate (1001) is fixedly installed at the output end of the inner welding electric telescopic rod (1002).

8. The steel pipe and flange alignment welding device for a power transmission tower according to claim 7, characterized in that: The inner grinding mechanism (11) includes an inner grinding fixing plate (1101) fixedly installed on one side of the inner rotating ring seat (8). An inner grinding electric telescopic rod (1102) is fixedly installed on the upper side of the inner grinding fixing plate (1101). An inner grinding head (1103) located below the inner grinding fixing plate (1101) is fixedly installed at the output end of the inner grinding electric telescopic rod (1102).

9. The steel pipe and flange alignment welding device for a power transmission tower according to claim 8, characterized in that: The inner rotating mechanism (9) includes an inner servo motor (903) fixedly installed at the center of the mounting plate (2). An inner gear (902) is fixedly installed at the output end of the inner servo motor (903). An inner gear ring (901) that meshes with the inner gear (902) is fixedly installed on the inner arc surface of the inner rotating ring seat (8).

10. A steel pipe and flange alignment welding device for a power transmission tower according to any one of claims 1-9, characterized in that: The drive mechanism (13) includes a second servo motor (1304) fixedly mounted on the upper side of the fixed base (18). The output end of the second servo motor (1304) is fixedly mounted with a drive gear (1303). The bottom of the rotating base (1) is fixedly mounted with a drive shaft (1301) rotatably connected to the fixed base (18). The outer side of the drive shaft (1301) is fixedly fitted with a driven gear (1302) meshing with the drive gear (1303). An external ultrasonic flaw detector (19) is fixedly mounted on one side of the outer rotating ring seat (4), and an internal ultrasonic flaw detector (20) is fixedly mounted on one side of the inner rotating ring seat (8).

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