Automatic welding process of metal structure power tube

Abstract

The invention discloses an automatic welding process for electric power pipes of metal structures, and belongs to the technical field of electric power pipe welding, the automatic welding process for the electric power pipes of the metal structures comprises the following specific steps: step 1, two electric power pipes of the metal structures are respectively placed in electric power pipe diameter adaptation mechanisms on two sides of the top of a supporting platform; and secondly, electric power pipe diameter adapting mechanisms on the two sides of the top of the rear supporting platform operate, the metal structure electric power pipes are limited and moved while the pipe diameters of the metal structure electric power pipes are adapted, and therefore the two metal structure electric power pipes move oppositely, and the two metal structure electric power pipes are in butt joint. By the adoption of the electric power pipe diameter adaptation mechanism and the swing annular welding mechanism, the efficiency, quality and safety of welding operation can be remarkably improved, errors caused by manual operation are reduced, heat distribution in the welding process is optimized, pipeline deformation is avoided, the overall construction quality is improved, and time and cost are saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power pipe welding, and particularly relates to an automatic welding process for metal-structured power pipes. Background Art

[0002] Metal-structured power pipes are a pipeline system specifically used to protect power cables. They are usually made of metal materials (such as steel, aluminum, etc.) and have strong mechanical strength and corrosion resistance. Their main function is to ensure that power cables are protected from external forces, physical damage, environmental corrosion, etc. during installation, transportation, and use. With the development of power construction and modern urban development, the protection of power pipelines is gradually moving towards the direction of standardization, modularization, and sustainable development. Metal power pipes conform to this trend. Using metal power pipes to protect power cables can improve the reliability and stability of the power system and reduce power interruption accidents caused by cable damage. Generally speaking, metal-structured power pipes play a powerful protective role and are an important part to ensure the safe and stable operation of power infrastructure.

[0003] Existing welding equipment is usually designed for specific pipe diameters and is difficult to deal with metal-structured power pipes of different sizes. Therefore, when welding pipes of different diameters, it is necessary to replace the equipment or manually adjust the parameters, which is time-consuming and error-prone. Moreover, during the welding process, due to the uneven distribution of heat, especially when the pipe is long or thick, it will cause deformation of the metal structure. In order to adjust to different pipe diameters and due to the problem of uneven heat distribution, it often takes a longer time to cool and correct the deformation, resulting in low welding efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide an automatic welding process for metal-structured power pipes.

[0005] The technical solution adopted to solve the above technical problem is: an automatic welding process for metal-structured power pipes, including the following specific steps: Step 1: Place two metal-structured power pipes in the power pipe diameter adaptation mechanisms on both sides of the top of the support platform respectively; Step 2: The power pipe diameter adaptation mechanisms on both sides of the top of the rear support platform operate, while adapting to the pipe diameters of the metal-structured power pipes, they perform limit movement on them, so that the two metal-structured power pipes move towards each other and the two metal-structured power pipes are butted; Step 3: Then the power pipe diameter adaptation mechanism stops operating, and during the process of Step 2, under the action of the first synchronous belt assembly, the swing ring welding mechanism moves simultaneously with the power pipe diameter adaptation mechanism, so that the center of the swing ring welding mechanism always coincides with the center point of the metal-structured power pipe diameter; Step 4: Then the swinging circular welding mechanism operates, causing the laser welder to reciprocate in a linear parallel direction on the support platform and rotate in the longitudinal axis direction, thereby automatically welding the weld between the two metal structure power tubes; Step 5: After welding is completed, the two power tube diameter adaption mechanisms operate again, and in the same rotation direction, to move the welded metal structure power tubes in one direction and remove them from the support platform; Step 6: By repeating the operation steps from Step 1 to Step 5, the automatic welding of the metal structure power tubes is achieved.

[0006] Further, the two power tube diameter adaption mechanisms are respectively located on both sides of the support platform, and the two power tube diameter adaption mechanisms are of the same structural setting. The power tube diameter adaption mechanism includes two support frames, and one support frame is fixedly connected to the support platform and located on one side of the top surface of the support platform. The other support frame is located in the chute of the support platform and is slidably connected to the support platform. A connecting rod is rotatably connected to the top of the support frame. The connecting rod is fixedly connected through several first bevel gears, and several first bevel gears are arranged linearly at equal intervals. Several first roller shafts are installed on one side of the top of the support frame. The first roller shafts on the tops of the two support frames are of a conical structure, and the first roller shafts on both sides of the tops of the two support frames are mirror images of each other. A second bevel gear is fixedly connected to one side of the first roller shaft. The connecting shaft of the second bevel gear is rotatably connected through the support frame, and the through end of the connecting shaft of the second bevel gear is fixedly connected to the first roller shaft. The second bevel gear is in transmission connection with the first bevel gear.

[0007] Through the above technical solution, it can adapt to different pipe diameters faster, reduce the debugging time, and enable the welding work to proceed more smoothly. The automatic limit movement of the equipment can quickly complete the positioning and docking of the pipes, avoiding delays in manual operation.

[0008] Further, a turntable is rotatably connected to one side of the support frame. The connecting shaft of the turntable is rotatably connected through the support frame, and the through end of the connecting shaft of the turntable is fixedly connected to the connecting rod. Several limit posts are welded on the side of the turntable away from the support frame. Several limit posts are arranged in a circumferentially symmetric distribution. The turntable drives a first worm through the limit posts. The first worm is rotatably connected to the support platform. There are two sections of worm threads on the outer wall of the first worm, and the two ends of the worm threads are of different lengths. The long worm thread on the first worm is in transmission with the turntable on the support frame that is slidably connected to the support platform, and the short worm thread on the first worm is in transmission with the turntable on the support frame that is fixedly connected to the support platform.

[0009] Further, a first threaded rod is rotatably connected in the chute of the support platform. One end of the first threaded rod is rotatably connected through the support frame fixed on the top surface of the support platform, and the other end of the first threaded rod is threadedly connected through the support frame located in the chute of the support platform. A first motor and a second motor are installed on one side of the support platform. The output ends of the first motor and the second motor are rotatably connected through the support platform. The penetrating end of the first motor is fixedly connected with a first worm, and the penetrating end of the second motor is fixedly connected with the first threaded rod.

[0010] Through the above technical solution, the position of the power pipe can be precisely controlled to ensure uniform heat distribution, thereby reducing deformation and internal stress caused by uneven thermal expansion.

[0011] Further, a second synchronous belt assembly is rotatably connected to the side of the support platform away from the first motor. The second synchronous belt assembly is arranged in a triangular structure. The connecting shafts of the two synchronous wheels in the second synchronous belt assembly are rotatably connected through the support platform, and the penetrating ends of the connecting shafts of the two synchronous wheels in the second synchronous belt assembly are fixedly connected with the first threaded rod. A second threaded rod is rotatably connected to the center of the top of the support platform. A chute is penetrated and opened in the support platform at the bottom of the second threaded rod. A slider is arranged in the chute. The slider is slidably connected with the support platform, and the support platform limits the slider.

[0012] Further, the second threaded rod is threadedly connected through the slider. A third synchronous belt assembly is rotatably connected to the support platform near the second threaded rod. The connecting shaft of one synchronous wheel in the third synchronous belt assembly is rotatably connected through the support platform, and the penetrating end of the connecting shaft of one synchronous wheel in the third synchronous belt assembly is fixedly connected with the second threaded rod. The other synchronous wheel in the third synchronous belt assembly is fixedly connected with one synchronous wheel in the second synchronous belt assembly.

[0013] Through the above technical solution, the need for manual adjustment, manual welding, and manual inspection is reduced by automated equipment, reducing labor costs. At the same time, improving welding quality and efficiency also helps reduce rework and repair costs.

[0014] Further, a hydraulic device is fixedly installed at the bottom of the slider. The telescopic end of the hydraulic device is fixedly connected with a spring frame. The contracting end of the spring frame is fixedly connected with a limiting frame. Second roller shafts are rotatably connected to both sides of the limiting frame. The second roller shafts are arranged in a structure with large ends and a low middle.

[0015] Further, two drive gears are drivingly connected to the inner diameter of the internal gear ring. A fourth synchronous belt assembly is fixedly connected between the two drive gears. A second worm is fixedly connected to the side of the synchronous pulley in the fourth synchronous belt assembly away from the drive gear. The other end of the second worm is rotatably connected to the annular frame. A worm gear is drivingly connected to the bottom of the second worm. A rotating rod is fixedly connected through the two worm gears. The rotating rod is rotatably connected to the annular frame through the annular frame. A cam is fixedly connected to the penetrating end of the rotating rod. A fourth motor is installed on the bottom of the annular frame on the side away from the drive gear. The output end of the fourth motor is rotatably connected to the annular frame through the annular frame. The penetrating end of the fourth motor is fixedly connected to one of the second worms.

[0016] Through the above technical solution, the welding area can be uniformly heated, avoiding local overheating or uneven cooling, reducing welding defects such as pores, slag inclusions, lack of fusion, etc., thereby improving the overall quality of the weld.

[0017] Further, the swinging annular welding mechanism includes a sliding frame. The sliding frame is slidably connected to the support platform, and the support platform laterally limits the sliding frame. An annular frame is slidably connected inside the sliding frame. Two sides of the bottom of the annular frame are fixedly connected with a plurality of spring rods. The plurality of spring rods are symmetrically arranged in a rectangle. The other end of the spring rod is fixedly connected to the sliding frame. A plurality of limiting wheels are rotatably connected to one side of the annular frame, and the plurality of annular frames are circumferentially symmetrically distributed. An internal gear ring is slidably connected between the plurality of limiting wheels, and the plurality of limiting wheels longitudinally limit the internal gear ring. The laser welder is installed on the side of the internal gear ring away from the annular frame.

[0018] Through the above technical solution, it helps to reduce the concentration of heat input, avoiding defects in the heat affected zone such as hot cracks and embrittlement caused by local overheating. Through uniform heat transfer, the stress concentration problem after the welding of the power pipe can be effectively reduced, enhancing the strength and toughness of the welded part.

[0019] Further, two drive gears are drivingly connected to the inner diameter of the internal gear ring. A fourth synchronous belt assembly is fixedly connected between the two drive gears. A second worm is fixedly connected to the side of the synchronous pulley in the fourth synchronous belt assembly away from the drive gear. The other end of the second worm is rotatably connected to the annular frame. A worm gear is drivingly connected to the bottom of the second worm. A rotating rod is fixedly connected through the two worm gears. The rotating rod is rotatably connected to the annular frame through the annular frame. A cam is fixedly connected to the penetrating end of the rotating rod. A fourth motor is installed on the bottom of the annular frame on the side away from the drive gear. The output end of the fourth motor is rotatably connected to the annular frame through the annular frame. The penetrating end of the fourth motor is fixedly connected to one of the second worms.

[0020] Through the above technical solutions, it helps to evenly distribute heat, avoid heat concentration in a small area, thereby reducing the deformation risk during welding. Especially when welding large-diameter or thick-walled pipes, it can effectively control the accumulation of thermal stress and reduce the workload of post-weld finishing.

[0021] Furthermore, a third threaded rod is provided at the bottom of the annular frame. The third threaded rod is threadedly connected through the sliding frame. Both ends of the third threaded rod are rotatably connected to the support platform. A connecting shaft of one of the synchronous wheels in the first synchronous belt assembly is rotatably connected through the support platform, and the penetrating end of the connecting shaft of one of the synchronous wheels in the first synchronous belt assembly is fixedly connected to the third threaded rod. The other synchronous wheel in the first synchronous belt assembly is fixedly connected to the second synchronous belt assembly.

[0022] Through the above technical solutions, a higher welding speed can be achieved because the heat distribution in the welding area is more uniform and the molten pool control is more precise, thereby improving work efficiency and reducing the overall welding cycle.

[0023] The beneficial effects of the present invention are as follows: (1) In the present invention, the operation of the second motor drives the first threaded rod to rotate. Under the combined action of the second synchronous belt assembly and the first synchronous belt assembly, the support frames on both sides of the support platform located in the support platform chute move towards the direction of another fixed support frame, and the components on the support frames move synchronously. Place the two metal structure power pipes on the first roller shafts on both sides of the top of the support platform respectively. Then, the hydraulic actuator operates to drive the spring frame and the limit frame to move downward simultaneously, so that the second roller shaft limits the metal structure power pipe. Then, the first motor operates to drive the first worm to rotate. With the cooperation of the limit post, the turntable rotates, thereby driving the connecting rod to rotate. At the same time, the first bevel gear rotates synchronously, and then drives the second bevel gear to rotate, so that the first roller shaft rotates to transport the metal structure power pipe. It can quickly switch to welding tasks with different pipe diameters and move smoothly between multiple pipes, thereby reducing the time for equipment replacement or manual adjustment and shortening the overall production cycle; (2) In the present invention, the operation of the fourth motor drives one of the second worms to rotate. Under the action of the fourth synchronous belt assembly, the two driving gears rotate simultaneously, thereby driving the internal gear ring to rotate under the limiting action of several limiting wheels. At the same time, when the two second worms rotate, they can drive the worm wheels to rotate. With the cooperation of the rotating rod, the cam rotates synchronously, so that the annular frame makes a horizontal reciprocating linear motion in the sliding frame under the action of the spring rod. Therefore, when the laser welding machine rotates following the internal gear ring, it simultaneously makes a horizontal reciprocating swing to achieve automatic welding, making the welding area receive more uniform heat, reducing the phenomenon of local overheating or too fast cooling, thereby improving the quality of the weld seam. At the same time, it improves the welding speed and reduces the pause time, which helps to improve the overall welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the process flow chart of the present invention; Figure 2 is the schematic structural diagram of the first perspective of the present invention; Figure 3 is the schematic structural diagram of the second perspective of the present invention; Figure 4 is the schematic structural diagram of the first perspective of the electric pipe diameter adaption mechanism of the present invention; Figure 5 is the schematic structural diagram of the second perspective of the electric pipe diameter adaption mechanism of the present invention; Figure 6 is the schematic structural diagram of the third perspective of the electric pipe diameter adaption mechanism of the present invention; Figure 7 is Figure 4 the enlarged structural diagram of part B of; Figure 8 is the schematic structural diagram of the first perspective of the swing ring welding mechanism of the present invention; Figure 9 is the schematic structural diagram of the second perspective of the swing ring welding mechanism of the present invention; Figure 10 is Figure 3 the enlarged structural diagram of part A of; Figure 11 is the schematic structural diagram of the first perspective of the internal components of the ring frame of the present invention; Figure 12 is the schematic structural diagram of the second perspective of the internal components of the ring frame of the present invention.

[0025] Reference numerals: 1, support platform; 2, electric pipe diameter adaption mechanism; 3, swing ring welding mechanism; 4, first synchronous belt assembly; 21, support frame; 22, connecting rod; 23, first bevel gear; 24, turntable; 25, limit post; 26, first worm; 27, first motor; 28, second motor; 29, first roller; 210, second bevel gear; 211, first threaded rod; 212, second synchronous belt assembly; 213, third synchronous belt assembly; 214, second threaded rod; 215, chute; 216, slider; 217, hydraulic actuator; 218, spring frame; 219, limit frame; 220, second roller; 31, sliding frame; 32, spring rod; 33, ring frame; 34, fourth synchronous belt assembly; 35, rotating rod; 36, cam; 37, third threaded rod; 38, fourth motor; 39, worm gear; 310, second worm; 311, driving gear; 312, internal gear ring; 313, limit wheel; 314, laser welder. DETAILED DESCRIPTION OF THE INVENTION

[0026] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] As Figure 1 shown, an automatic welding process for a metal-structured power pipe in this embodiment includes the following specific steps: Step 1: Place two metal-structured power pipes on the power pipe diameter adaptation mechanisms 2 on both sides of the top of the support platform 1 respectively; Step 2: Then, the power pipe diameter adaptation mechanisms 2 on both sides of the top of the support platform 1 operate. While adapting the diameters of the metal-structured power pipes, they perform limit movement on them, so that the two metal-structured power pipes move towards each other and the two metal-structured power pipes are butted; Step 3: Then, the power pipe diameter adaptation mechanism 2 stops operating. And during the process of Step 2, under the action of the first synchronous belt assembly 4, the swing ring welding mechanism 3 moves simultaneously with the power pipe diameter adaptation mechanism 2, so that the center of the swing ring welding mechanism 3 always coincides with the center point of the diameter of the metal-structured power pipe; Step 4: Then, the swing ring welding mechanism 3 operates, so that the laser welder 314 reciprocates in the linear parallel direction of the support platform 1 and rotates in the longitudinal axis direction, thereby automatically welding the weld between the two metal-structured power pipes; Step 5: After welding, the two power pipe diameter adaptation mechanisms 2 operate again, and the rotation directions are the same, moving the welded metal-structured power pipe in one direction and removing it from the support platform 1; Step 6: By repeating the operation steps of Step 1 to Step 5, the automatic welding of the metal-structured power pipe is realized.

[0028] As Figures 2 - 7As shown, to implement the above automatic welding process, this embodiment provides a corresponding automatic welding device. The device includes a support platform 1. Two power pipe diameter adaptation mechanisms 2 are respectively located on both sides of the support platform 1, and the two power pipe diameter adaptation mechanisms 2 are arranged with the same structure. The power pipe diameter adaptation mechanism 2 includes two support frames 21. One support frame 21 is fixedly connected to the support platform 1 and is located on one side of the top surface of the support platform 1. A first threaded rod 211 is rotatably connected in the chute of the support platform 1. One end of the first threaded rod 211 penetrates and is rotatably connected to the support frame 21 fixed on the top surface of the support platform 1, and the other end of the first threaded rod 211 penetrates and is threadedly connected to the support frame 21 located in the chute of the support platform 1. A first motor 27 and a second motor 28 are installed on one side of the support platform 1. The output ends of the first motor 27 and the second motor 28 penetrate and are rotatably connected to the support platform 1, which can adapt to different pipe diameters faster, reduce the debugging time, and enable the welding work to proceed more smoothly. The automatic limit movement of the device can quickly complete the positioning and docking of the pipes, avoiding the delay of manual operation. A second synchronous belt assembly 212 is rotatably connected to the side of the support platform 1 away from the first motor 27. The second synchronous belt assembly 212 is arranged in a triangular structure. The connecting shafts of the two synchronous wheels in the second synchronous belt assembly 212 penetrate and are rotatably connected to the support platform 1, and the penetrating ends of the connecting shafts of the two synchronous wheels in the second synchronous belt assembly 212 are fixedly connected to the first threaded rod 211. By precisely controlling the position of the power pipe, the uniform distribution of heat can be ensured, which can reduce the deformation and internal stress caused by uneven thermal expansion. A second threaded rod 214 is rotatably connected to the center of the top of the support platform 1. The second threaded rod 214 penetrates and is threadedly connected to the slider 216. A hydraulic device 217 is fixedly installed at the bottom of the slider 216. The telescopic end of the hydraulic device 217 is fixedly connected to a spring frame 218. The contraction end of the spring frame 218 is fixedly connected to a limit frame 219. Two second roller shafts 220 are rotatably connected to both sides of the limit frame 219. The second roller shafts 220 are arranged with large ends and a low middle part. A third synchronous belt assembly 213 is rotatably connected to the support platform 1 near the second threaded rod 214.

[0029] As Figures 3 - 7It is shown that a synchronous wheel connecting shaft in the third synchronous belt assembly 213 is rotatably connected to the support platform 1, and a synchronous wheel connecting shaft in the third synchronous belt assembly 213 is fixedly connected to the second threaded rod 214 at the through end, and another synchronous wheel in the third synchronous belt assembly 213 is fixedly connected to a synchronous wheel in the second synchronous belt assembly 212, and a slide groove 215 is provided through the support platform 1 at the bottom of the second threaded rod 214, and a slider 216 is provided in the slide groove 215, and the slider 216 is slidably connected to the support platform 1, and the support platform 1 limits the slider 216, and the through end of the first motor 27 is fixedly connected to the first worm 26, and the through end of the second motor 28 is fixedly connected to the first worm 26. The first threaded rod 211 is fixedly connected to the second threaded rod 211, and the other support frame 21 is located in the slide groove of the support platform 1, and the other support frame 21 is slidably connected to the support platform 1. A turntable 24 is rotatably connected to one side of the support frame 21. The connecting shaft of the turntable 24 penetrates and rotates with the support frame 21, and the through end of the connecting shaft of the turntable 24 is fixedly connected to the connecting rod 22. A plurality of limit posts 25 are welded on the side of the turntable 24 away from the support frame 21. The automated equipment reduces the need for manual adjustment, manual welding and manual inspection, reduces personnel costs, and at the same time, improves welding quality and efficiency, which also helps to reduce rework and maintenance costs. A plurality of limit posts 25 are symmetrically distributed on the circumference, and the turntable 24 is connected to a first worm 26 through a limiting column 25, and the first worm 26 is rotatably connected to the support platform 1. The outer wall of the first worm 26 is provided with two sections of worm lines, and the worm lines at both ends are of different lengths. The long worm line on the first worm 26 and the turntable 24 on which the support frame 21 is slidably connected to the support platform 1 are transmitted, and the short worm line on the first worm 26 and the turntable 24 on which the support frame 21 is fixedly connected to the support platform 1 are transmitted. A connecting rod 22 is rotatably connected to the top of the support frame 21, and the connecting rod 22 passes through and is fixedly connected with a plurality of first bevel gears 23, and the plurality of first bevel gears 23 are linearly arranged at equal intervals. A plurality of first bevel gears 23 are installed on one side of the top of the support frame 21. There are a plurality of first rollers 29, and the angle formed between the first roller 29 and the second roller 220 can form an angle limit for the power tube in three directions. When the power tube is moved, the power tube can always be kept in a stable state. The first rollers 29 on the top of the two support frames 21 are arranged in a conical structure, and the first rollers 29 on both sides of the top of the two support frames 21 are arranged in a mirror image. A second bevel gear 210 is fixedly connected to one side of the first roller 29, and the connecting shaft of the second bevel gear 210 is rotatably connected to the support frame 21, and the through end of the connecting shaft of the second bevel gear 210 is fixedly connected to the first roller 29, and the second bevel gear 210 is transmission-connected to the first bevel gear 23.

[0030] like Figures 2 - 12As shown, the swinging ring welding mechanism 3 includes a sliding frame 31. The sliding frame 31 is slidably connected to the support platform 1, and the support platform 1 laterally limits the sliding frame 31. Inside the sliding frame 31, there is a sliding connection with a ring frame 33. At the bottom of the ring frame 33, there is a third threaded rod 37. The third threaded rod 37 is threadedly connected through the sliding frame 31, and both ends of the third threaded rod 37 are rotatably connected to the support platform 1. One connecting shaft of a synchronous wheel in the first synchronous belt assembly 4 is rotatably connected through the support platform 1, and the penetrating end of one connecting shaft of the synchronous wheel in the first synchronous belt assembly 4 is fixedly connected to the third threaded rod 37, which can make the welding area be evenly heated, avoid local overheating or uneven cooling, reduce welding defects such as pores, slag inclusions, lack of fusion, etc., thereby improving the overall quality of the weld seam. Another synchronous wheel in the first synchronous belt assembly 4 is fixedly connected to the second synchronous belt assembly 212. On both sides of the bottom of the ring frame 33, there are fixedly connected several spring rods 32. The several spring rods 32 are symmetrically arranged in a rectangle, and the other end of the spring rod 32 is fixedly connected to the sliding frame 31. On one side of the ring frame 33, there are rotatably connected several limiting wheels 313, and several ring frames 33 are circumferentially symmetrically distributed. An internal gear ring 312 is slidably connected between the several limiting wheels 313. The inner diameter of the internal gear ring 312 is drivingly connected with two driving gears 311. Between the two driving gears 311, there is fixedly connected a fourth synchronous belt assembly 34. On the side of the synchronous wheel in the fourth synchronous belt assembly 34 away from the driving gear 311, there is fixedly connected a second worm 310. The other end of the second worm 310 is rotatably connected to the ring frame 33. At the bottom of the second worm 310, there is a driving connection with a worm gear 39. Between the two worm gears 39, there is fixedly connected a rotating rod 35 through them. The rotating rod 35 is rotatably connected through the ring frame 33, which helps to reduce the concentration of heat input and avoid defects in the heat-affected zone such as heat cracks and embrittlement caused by local overheating. Through uniform heat transfer, the stress concentration problem after the welding of the power pipe can be effectively reduced, and the strength and toughness of the welded part can be enhanced. The penetrating end of the rotating rod 35 is fixedly connected with a cam 36. On the side of the bottom of the ring frame 33 away from the driving gear 311, there is installed a fourth motor 38. The output end of the fourth motor 38 is rotatably connected through the ring frame 33, which helps to evenly distribute the heat, avoids the heat concentrating in a small area, thereby reducing the deformation risk during the welding process. Especially when welding large-size or thick-wall pipes, the accumulation of thermal stress can be effectively controlled, and the workload of post-weld trimming can be reduced. The penetrating end of the fourth motor 38 is fixedly connected to one of the second worms 310, and the several limiting wheels 313 longitudinally limit the internal gear ring 312. The laser welder 314 is installed on the side of the internal gear ring 312 away from the ring frame 33, and a higher welding speed can be achieved because the heat distribution in the welding area is more uniform and the molten pool control is more accurate, thereby improving the work efficiency and reducing the overall welding cycle.

[0031] The working principle of this embodiment is as follows. When adapting metal structure power pipes with different pipe diameters, the second motor 28 operates to drive the first threaded rod 211 to rotate. Under the combined action of the second synchronous belt assembly 212 and the first synchronous belt assembly 4, the support frames 21 on both sides of the support platform 1 located in the sliding grooves of the support platform 1 move towards the direction of another fixed support frame 21, and the components on the support frames 21 move synchronously. When the first synchronous belt assembly 4 is driving, it drives the third threaded rod 37 to rotate, so that the sliding frame 31 slides on the top of the support platform 1 to keep the center of the annular frame 33 always coinciding with the midline between the two support frames 21. At the same time, the limit post 25 on the turntable 24 on one side of the sliding support frame 21 can always maintain a driving state with the worm thread of the first worm 26. By placing the two metal structure power pipes on the first roller shafts 29 on both sides of the top of the support platform 1 respectively, then the hydraulic device 217 operates to drive the spring frame 218 and the limit frame 219 to move downward simultaneously, so that the second roller shaft 220 limits the metal structure power pipes.

[0032] Then the first motors 27 on both sides of the support platform 1 operate in opposite directions, thereby driving the first worm 26 to rotate. With the cooperation of the limit post 25, the turntable 24 rotates, thereby driving the connecting rod 22 to rotate. At the same time, the first bevel gear 23 rotates synchronously, and then drives the second bevel gear 210 to rotate, so that the first roller shaft 29 rotates to transport the metal structure power pipes, enabling the two metal structure power pipes to be butted, and the butting position is at the center line inside the swing annular welding mechanism 3.

[0033] When welding the metal structure power pipes, the fourth motor 38 operates to drive one of the second worms 310 to rotate. Under the action of the fourth synchronous belt assembly 34, the two driving gears 311 rotate simultaneously, thereby driving the internal gear ring 312 to rotate under the limiting action of a number of limiting wheels 313. At the same time, when the two second worms 310 rotate, they can drive the worm wheel 39 to rotate. With the cooperation of the rotating rod 35, the cam 36 rotates synchronously, so that the annular frame 33 makes a horizontal reciprocating linear motion in the sliding frame 31 under the action of the spring rod 32. Thus, when the laser welding machine 314 rotates following the internal gear ring 312, it simultaneously makes a horizontal reciprocating swing to achieve automatic welding, improving the welding quality, reducing the defect rate, and effectively reducing welding deformation and stress concentration.

[0034] After welding, the first motors 27 on both sides of the support platform 1 operate in the same direction to move the welded metal structure power pipes out of the welding equipment.

[0035] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An automatic welding process for a metal-structured power tube, characterized in that, The following are the specific steps: Step 1: Place the two metal - structured power tubes respectively in the power - tube diameter - adapting mechanisms (2) on both sides of the top of the support platform (1). Step 2: The power - tube diameter - adapting mechanisms (2) on both sides of the top of the rear support platform (1) operate. While adapting the diameters of the metal - structured power tubes, they limit the movement thereof, so that the two metal - structured power tubes move towards each other and butt - joint with each other. Step 3: Then the power - tube diameter - adapting mechanism (2) stops operating. And during Step 2, under the action of the first synchronous - belt assembly (4), the swinging ring - shaped welding mechanism (3) moves simultaneously with the power - tube diameter - adapting mechanism (2), so that the center of the swinging ring - shaped welding mechanism (3) always coincides with the center point of the diameter of the metal - structured power tube. Step 4: Then the swinging ring - shaped welding mechanism (3) operates, so that the laser welder (314) reciprocates in the linear parallel direction of the support platform (1) and rotates in the longitudinal axis direction, thereby automatically welding the weld seam between the two metal - structured power tubes. Step 5: After welding, the two power - tube diameter - adapting mechanisms (2) operate again, and their rotation directions are the same, moving the welded metal - structured power tubes in one direction and removing them from the support platform (1). Step 6: By repeating the operation steps from Step 1 to Step 5, the automatic welding of the metal - structured power tubes is realized.

2. The automatic welding process of a metal structure power pipe according to claim 1, characterized in that, The two power - tube diameter - adapting mechanisms (2) are respectively located on both sides of the support platform (1), and the two power - tube diameter - adapting mechanisms (2) are set with the same structure. The power - tube diameter - adapting mechanism (2) includes two support frames (21). One support frame (21) is fixedly connected to the support platform (1) and is located on one side of the top surface of the support platform (1). The other support frame (21) is located in the chute of the support platform (1) and is slidably connected to the support platform (1). A connecting rod (22) is rotatably connected to the top of the support frame (21). A number of first bevel gears (23) are fixedly connected through the connecting rod (22), and the number of first bevel gears (23) is arranged linearly and at equal intervals. A number of first roller shafts (29) are installed on one side of the top of the support frame (21). The first roller shafts (29) on the tops of the two support frames (21) are arranged in a conical structure, and the first roller shafts (29) on both sides of the tops of the two support frames (21) are mirror - imaged with each other. A second bevel gear (210) is fixedly connected to one side of the first roller shaft (29). The connecting shaft of the second bevel gear (210) is rotatably connected through the support frame (21), and the penetrating end of the connecting shaft of the second bevel gear (210) is fixedly connected to the first roller shaft (29). The second bevel gear (210) is in transmission connection with the first bevel gear (23).

3. The automatic welding process of a metal-structured power pipe according to claim 2, characterized in that, One side of the support frame (21) is rotatably connected to a turntable (24). The connecting shaft of the turntable (24) is rotatably connected through the support frame (21), and the end of the connecting shaft of the turntable (24) passing through is fixedly connected to a connecting rod (22). On the side of the turntable (24) away from the support frame (21), several limit posts (25) are welded. The several limit posts (25) are arranged in a circumferential symmetry. The turntable (24) is drivingly connected to a first worm (26) through the limit posts (25). The first worm (26) is rotatably connected to the support platform (1). The outer wall of the first worm (26) is provided with two worm threads, and the two worm threads at both ends are of different lengths. The long worm thread on the first worm (26) drives the turntable (24) that is slidably connected between the support frame (21) and the support platform (1), and the short worm thread on the first worm (26) drives the turntable (24) that is fixedly connected between the support frame (21) and the support platform (1).

4. The automatic welding process of a metal structure power pipe according to claim 3, characterized in that, A first threaded rod (211) is rotatably connected in the chute of the support platform (1). One end of the first threaded rod (211) is rotatably connected through the support frame (21) fixed on the top surface of the support platform (1), and the other end of the first threaded rod (211) is threadedly connected through the support frame (21) located in the chute of the support platform (1). One side of the support platform (1) is equipped with a first motor (27) and a second motor (28). The output ends of the first motor (27) and the second motor (28) are rotatably connected through the support platform (1). The end of the first motor (27) passing through is fixedly connected to the first worm (26), and the end of the second motor (28) passing through is fixedly connected to the first threaded rod (211).

5. The automatic welding process of a metal-structured power pipe according to claim 4, characterized in that, A second synchronous belt assembly (212) is rotatably connected to the side of the support platform (1) away from the first motor (27). The second synchronous belt assembly (212) is arranged in a triangular structure. The connecting shafts of the two synchronous pulleys in the second synchronous belt assembly (212) are rotatably connected through the support platform (1), and the ends of the connecting shafts of the two synchronous pulleys in the second synchronous belt assembly (212) passing through are fixedly connected to the first threaded rod (211). A second threaded rod (214) is rotatably connected to the center of the top of the support platform (1). A chute (215) is opened through the support platform (1) at the bottom of the second threaded rod (214). A slider (216) is arranged in the chute (215). The slider (216) is slidably connected to the support platform (1), and the support platform (1) limits the slider (216).

6. The automatic welding process of a metal structure power pipe according to claim 5, characterized in that, The second threaded rod (214) is threadedly connected to the slider (216) through and through. A third synchronous belt assembly (213) is rotatably connected to the support platform (1) on the side close to the second threaded rod (214). A connecting shaft of one of the synchronous wheels in the third synchronous belt assembly (213) is rotatably connected to the support platform (1) through and through, and the penetrating end of the connecting shaft of one of the synchronous wheels in the third synchronous belt assembly (213) is fixedly connected to the second threaded rod (214). The other synchronous wheel in the third synchronous belt assembly (213) is fixedly connected to one of the synchronous wheels in the second synchronous belt assembly (212).

7. An automatic welding process for a metal-structured power pipe according to claim 6, characterized in that, A hydraulic actuator (217) is fixedly installed at the bottom of the slider (216). A spring frame (218) is fixedly connected to the telescopic end of the hydraulic actuator (217). A limiting frame (219) is fixedly connected to the contracting end of the spring frame (218). Two second roller shafts (220) are rotatably connected to both sides of the limiting frame (219). The second roller shafts (220) are arranged in a structure with large ends and a low middle part at both ends.

8. The automatic welding process of a metal structure power pipe according to claim 5, characterized in that, The swing ring welding mechanism (3) includes a sliding frame (31). The sliding frame (31) is slidably connected to the support platform (1), and the support platform (1) laterally limits the sliding frame (31). An annular frame (33) is slidably connected inside the sliding frame (31). A plurality of spring rods (32) are fixedly connected to both sides of the bottom of the annular frame (33). The plurality of spring rods (32) are symmetrically arranged in a rectangle. The other ends of the spring rods (32) are fixedly connected to the sliding frame (31). A plurality of limiting wheels (313) are rotatably connected to one side of the annular frame (33), and the plurality of annular frames (33) are circumferentially symmetrically distributed. An internal gear ring (312) is slidably connected between the plurality of limiting wheels (313), and the plurality of limiting wheels (313) longitudinally limit the internal gear ring (312). The laser welding machine (314) is installed on the side of the internal gear ring (312) away from the annular frame (33).

9. The automatic welding process of a metal structure power tube according to claim 8, characterized in that, Two driving gears (311) are drivingly connected to the inner diameter of the internal gear ring (312). A fourth synchronous belt assembly (34) is fixedly connected between the two driving gears (311). A second worm (310) is fixedly connected to the side of the synchronous wheel in the fourth synchronous belt assembly (34) away from the driving gear (311). The other end of the second worm (310) is rotatably connected to the annular frame (33). A worm gear (39) is drivingly connected to the bottom of the second worm (310). A rotating rod (35) is fixedly connected through the two worm gears (39). The rotating rod (35) is rotatably connected to the annular frame (33) through and through. A cam (36) is fixedly connected to the penetrating end of the rotating rod (35). A fourth motor (38) is installed on the side of the bottom of the annular frame (33) away from the driving gear (311). The output end of the fourth motor (38) is rotatably connected to the annular frame (33) through and through. The penetrating end of the fourth motor (38) is fixedly connected to one of the second worms (310).

10. The automatic welding process of a metal structure power pipe according to claim 8, characterized in that, A third threaded rod (37) is provided at the bottom of the annular frame (33). The third threaded rod (37) is threadedly connected through the sliding frame (31). Both ends of the third threaded rod (37) are rotatably connected to the support platform (1). A connecting shaft of a synchronous pulley in the first synchronous belt assembly (4) is rotatably connected through the support platform (1), and the penetrating end of the connecting shaft of the synchronous pulley in the first synchronous belt assembly (4) is fixedly connected to the third threaded rod (37). Another synchronous pulley in the first synchronous belt assembly (4) is fixedly connected to the second synchronous belt assembly (212).

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