A high-efficiency pipe welding device integrating centering and clamping functions

Abstract

The application relates to the field of pipeline welding, in particular to a pipeline efficient welding device integrating centering and clamping functions, which comprises a rotating disc and two groups of pipelines movably sleeved in the rotating disc, the outer surface of the rotating disc is provided with push clutches, the inner wall surface of the rotating disc is fixedly installed with four groups of hydraulic rods II, the output ends of the hydraulic rods II are provided with abutting positioning plates movably sleeved on the outer surfaces of the pipelines. When the butt joint between the two pipelines deviates, the hydraulic rod III moves the sliding block, and the swing plate at the end of the supporting arm is tightly abutted on the surface of the pipeline; when the swing plate is pushed, the swing plate cannot move on the surface of the pipeline due to the antiskid property and adhesive material of the polyurethane antiskid layer; when the sliding block slides in the supporting frame II, the supporting arm pushes the swing plate, the swing plate is continuously raised, and the pipeline on one side of the rotating disc is slightly tilted.

Description

Technical Field

[0001] This invention belongs to the field of pipeline welding technology, specifically a high-efficiency pipeline welding device that integrates centering and clamping functions. Background Technology

[0002] Plasma arc welding is a fusion welding method that uses a high-energy-density plasma arc beam as the welding heat source. Plasma arc welding has the characteristics of concentrated energy, high productivity, fast welding speed, small stress deformation, stable electric arc, and suitability for welding thin plates and box materials. It is particularly suitable for welding various refractory, easily oxidized, and heat-sensitive metal materials (such as tungsten, molybdenum, copper, nickel, titanium, etc.).

[0003] A patent with publication number CN121624768A discloses a pipe welding device, belonging to the field of pipe welding technology. The pipe welding device includes: a rotary welding mechanism, a first lifting mechanism, a support plate, a moving mechanism, a first supporting mechanism, a clamping mechanism, a second supporting mechanism, a centering mechanism, a third supporting mechanism, a pressing mechanism, and a lifting and positioning mechanism. By connecting multiple first lifting mechanisms to the support plate, the multiple first lifting mechanisms cooperate to drive the support plate to move up and down, thereby adjusting the height of the support plate and the pipe placed on the first and second supporting mechanisms. This ensures that the centerline of the pipe is at the same height as the centerline of the rotary welding mechanism, thus enabling the welding of pipes of different specifications (diameters) to improve the applicability of the product.

[0004] Currently, in existing technologies, when welding pipes together, there are generally two methods: either fixing the two pipes first and then connecting them, or fitting the two pipes together first and then fixing them. However, fixing the pipes first can lead to a situation where the two pipes cannot be effectively connected after fixing, resulting in slight height differences. If the two pipes are fitted together first and then fixed, the pipes may tilt or shift during the fixing process, making it impossible to keep both pipes at a horizontal angle at the same time, and it is also impossible to adjust the pipes in a timely manner after fixing them.

[0005] Therefore, the present invention provides a high-efficiency pipe welding device that integrates centering and clamping functions. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A high-efficiency pipe welding device integrating centering and clamping functions, comprising a rotating disk and two sets of pipes movably fitted inside the rotating disk. The outer surface of the rotating disk is provided with pushing teeth. Four sets of hydraulic rods are fixedly installed on the inner wall of the rotating disk. The output end of each hydraulic rod is provided with a fitting positioning plate movably fitted onto the outer surface of the pipe. Support frames are fixedly connected to both sides of the rotating disk at their upper and lower edges. Hydraulic rods are fixedly installed on the outer surface of each support frame. A slider with a limit position is fixedly connected to the output end of each hydraulic rod and movably fitted onto the inner wall of the top of the support frame. A support arm is oscillatingly connected to the outer surface of the slider. A swing plate is oscillatingly connected to the other end of the support arm. A polyurethane anti-slip layer is adhesively fitted onto the outer surface of the pipe on the outer surface of the swing plate. A transmission gear roller is movably fitted onto the outer surface of the pushing teeth. Two sets of servo motors are provided at both ends of the transmission gear roller. A plasma arc generator is provided at the joint of the two sets of pipes.

[0008] Preferably, the two sides of the rotating disk are symmetrically fixedly connected with limiting sleeves two, and the two sets of support frames two are positioned at the upper and lower edges of the pipe.

[0009] Preferably, an arc-shaped limiting ring is movably fitted onto the outer surface of the second limiting ring, and a limiting slider is provided on the bottom surface of the arc-shaped limiting ring.

[0010] Preferably, a support frame is fixedly installed on the bottom outer surface of the servo motor, a support platform is fixedly installed on the bottom outer surface of the support frame, and four sets of limiting grooves are opened on the top surface of the support platform and at the four edges.

[0011] Preferably, four sets of motors are symmetrically fixedly installed on both sides of the support platform, and the output end of the motor is fixedly connected to a threaded rod provided on the inner wall of the limiting groove.

[0012] Preferably, the outer surface of the limiting slider is threadedly and movably sleeved on the outer surface of the threaded rod, and a second support platform is provided at the middle position of the first support platform, and the outer surface of the plasma arc device is movably sleeved on the inner wall of the second support platform.

[0013] Preferably, two sets of support platforms three are symmetrically fixedly installed on both sides of the support platform one, and a swing limiting plate is fixedly connected to the top surface of the support platform three and located at the two side edges.

[0014] Preferably, four sets of swing arms are oscillatingly connected to the two side surfaces of the support platform three and inside the swing limiting plate. Two sets of limiting support arms are movably sleeved on the outer surface of the two sets of swing arms, and limiting sleeves are movably sleeved on the top surface of the four sets of swing arms.

[0015] Preferably, the top surface of the limiting sleeve is oscillatingly connected to a self-locking cover, and the inner wall surfaces of the limiting sleeve and the self-locking cover are movably sleeved on the outer surface of the pipe.

[0016] Preferably, two sets of hydraulic rods are provided on the top surface of the support platform three and at the two side edges. The output end of the hydraulic rods is fitted with a limiting collar, and the inner wall of the limiting collar is movably fitted onto the outer surface of the swing arm.

[0017] The beneficial effects of this invention are as follows: 1. The present invention provides a high-efficiency pipe welding device integrating centering and clamping functions. When a deviation occurs at the joint between two pipes, three pairs of sliders are moved in conjunction with hydraulic rods. At this time, the swing plate at one end of the support arm is in close contact with the pipe surface. When the swing plate is pushed, the anti-slip and adhesive properties of the polyurethane anti-slip layer itself prevent the swing plate from moving on the pipe surface. As the slider slides inside the second support frame, the support arm pushes the swing plate. As the swing plate is continuously raised, the pipe on one side of the rotating disk will tilt slightly, while the swing plate on the other side of the rotating disk will press down on one end of the pipe, thereby adjusting the overall angle of the pipe. 2. The high-efficiency pipe welding device integrating centering and clamping functions described in this invention, after two pipes are horizontally connected, uses hydraulic rod two to tightly push the fitting positioning plate, and then uses multiple sets of hydraulic rod two to squeeze and limit the position of the pipe. At this time, the plasma arc generator inside the support platform two moves, and the output end of the plasma arc generator is attached to the joint of the two pipes. At this time, the servo motor rotates the transmission gear roller, and the rotating transmission gear roller drives the pushing teeth on the outer surface of the rotating disk to rotate together. At this time, the rotating disk will slide within the arc-shaped limiting ring under the limitation of the limiting ring two on both sides. As the rotating disk rotates, it will drive the pipe to rotate, and then the output end of the plasma arc generator will slide at the joint gap of the pipe, thereby welding the gap between the two pipes. The uniform rotation of the pipe can make the plasma arc generator uniformly weld the pipe. 3. The high-efficiency pipe welding device integrating centering and clamping functions described in this invention, after the pipe is moved to the top edge of the support platform, a motor rotates the threaded rod, causing the limiting slider on the outer surface of the threaded rod to move towards the pipe, so that the rotating disk is sleeved on the outer surface of the pipe. A hydraulic rod pushes the fitting positioning plate, causing it to adhere to the surface of the pipe, thus performing preliminary positioning of the pipe. At this time, a swing plate at one end of the support arm adheres to the outer surface of the pipe, and the polyurethane anti-slip layer inside the swing plate is tightly attached to the surface of the pipe. As the polyurethane anti-slip layer is pressed and deformed, the deformed polyurethane anti-slip layer increases the friction between it and the pipe, preventing the swing plate from moving on the surface of the pipe. The four sets of support frames on both sides of the rotating disk provide extensive support for the pipe, thus placing the rotating disk in a suspended state. (See attached drawings.) The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional view of the pipe clamping and moving mechanism in this invention; Figure 3 This is a perspective view of the pipe alignment in this invention; Figure 4 This is a three-dimensional view of the pipe connection in this invention; Figure 5 This is a three-dimensional cross-sectional view of the pipe angle adjustment in this invention; Figure 6 This is a three-dimensional view of the limiting slider in this invention; Figure 7 This is a three-dimensional view of the polyurethane anti-slip layer in this invention; Figure 8 This is a three-dimensional view of the support platform in this invention; Figure 9 This is a three-dimensional view of the support platform in this invention.

[0019] In the diagram: 11. Support platform one; 111. Limiting slide groove; 112. Motor; 113. Support platform two; 114. Plasma arc generator; 115. Support frame one; 116. Servo motor; 117. Transmission gear roller; 12. Support platform three; 121. Swinging limiting plate; 122. Hydraulic rod one; 123. Limiting collar one; 124. Swing arm; 125. Limiting support arm; 126. Limiting sleeve; 127. Closing self-locking cover; 13. Limiting slider; 131. Arc-shaped limiting ring; 132. Limiting collar two; 133. Rotating disk; 134. Pushing tooth; 135. Hydraulic rod two; 136. Fitting positioning plate; 137. Support frame two; 138. Hydraulic rod three; 139. Slider; 1310. Support arm; 1311. Swing plate; 1312. Polyurethane anti-slip layer; 14. Pipe. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 7 As shown in the figure, an efficient pipe welding device integrating centering and clamping functions according to an embodiment of the present invention includes a rotating disk 133 and two sets of pipes 14 movably sleeved inside the rotating disk 133. Pushing teeth 134 are provided on the outer surface of the rotating disk 133. Four sets of hydraulic rods 135 are fixedly installed on the inner wall of the rotating disk 133. A fitting positioning plate 136 is provided at the output end of each hydraulic rod 135 and movably sleeved on the outer surface of the pipes 14. Support frames 137 are fixedly connected to both sides of the rotating disk 133 at the upper and lower edges. Hydraulic rods 138 are fixedly installed on the outer surface of the support frames 137. The output end of the hydraulic rod 138 is fixedly connected to a slider 139 that is movably fitted onto the inner wall of the top of the support frame 137. The outer surface of the slider 139 is swayably connected to a support arm 1310. The other end of the support arm 1310 is swayably connected to a swing plate 1311. The outer surface of the swing plate 1311 is provided with a polyurethane anti-slip layer 1312 that adheres to the outer surface of the pipe 14. The outer surface of the push tooth 134 is movably fitted with a transmission gear roller 117. Two sets of servo motors 116 are provided at both ends of the transmission gear roller 117. A plasma arc generator 114 is provided at the joint of the two sets of pipes 14.

[0022] When pipe 14 moves into the rotating disk 133, the self-locking cover 127 is opened and closed, causing pipe 14 to move out of the limiting sleeve 126. At this time, the motor 112 rotates the threaded rod, causing the limiting slider 13 to carry pipe 14 to the center position of the support platform 11, and causing one end of the two pipes 14 to be connected. If there is a deviation at the connection between the two pipes 14, the hydraulic rod 138 moves the slider 139. At this time, the swing plate 1311 at one end of the support arm 1310 is in close contact with the surface of pipe 14. When the swing plate 1311... When pushing, the anti-slip and adhesive properties of the polyurethane anti-slip layer 1312 prevent the swing plate 1311 from moving on the surface of the pipe 14. As the slider 139 slides inside the support frame 137, the support arm 1310 pushes the swing plate 1311. As the swing plate 1311 is continuously raised, the pipe 14 on one side of the rotating disk 133 will tilt slightly, while the swing plate 1311 on the other side of the rotating disk 133 will press down on one end of the pipe 14, thereby adjusting the overall angle of the pipe 14. After the two pipes 14 are horizontally connected, the hydraulic rod 135 pushes the fitting positioning plate 136 tightly. Then, the position of the pipes 14 is squeezed and limited by multiple sets of hydraulic rods 135. At this time, the plasma arc generator 114 inside the support platform 113 moves and the output end of the plasma arc generator 114 is attached to the joint of the two pipes 14. At this time, the servo motor 116 rotates the transmission gear roller 117. The rotating transmission gear roller 117 drives the pushing teeth 134 on the outer surface of the rotating disk 133 to rotate together. At this time, the rotating disk 133 is limited and slides inside the arc-shaped limiting ring 131 under the limitation of the limiting rings 132 on both sides. As the rotating disk 133 rotates, it drives the pipes 14 to rotate, so that the output end of the plasma arc generator 114 slides at the joint of the pipes 14, thereby welding the joint of the two pipes 14.

[0023] like Figures 8 to 9As shown, two sets of support platforms 12 are symmetrically fixedly installed on both sides of support platform 11. A swing limiting plate 121 is fixedly connected to the top surface of support platform 12 and at the two side edges. Four sets of swing arms 124 are swing-connected to the two side surfaces of support platform 12 and inside the swing limiting plate 121. Two sets of limiting support arms 125 are movably sleeved on the outer surface of the two sets of swing arms 124. Limiting sleeves 126 are movably sleeved on the top surface of the four sets of swing arms 124. A closing self-locking cover 127 is swing-connected to the top surface of the limiting sleeve 126. The inner wall of the limiting sleeve 126 and the closing self-locking cover 127 is movably sleeved on the outer surface of the pipe 14. Two sets of hydraulic rods 122 are provided on the top surface of support platform 12 and at the two side edges. A limiting collar 123 is limitedly sleeved at the output end of the hydraulic rod 122. The inner wall of the limiting collar 123 is movably sleeved on the outer surface of the swing arm 124.

[0024] The pipe 14 is placed on the top surface of the limiting sleeve 126. The self-locking cover 127 is closed and locked onto the top surface of the limiting sleeve 126 to lock and limit the position of the pipe 14. At this time, the hydraulic rod 122 pushes the surface of the swing arm 124, and one end of the swing arm 124 is supported by the support platform 12, so that the swing arm 124 gradually stands up. When the four sets of swing arms 124 are standing up, the limiting support arm 125 limits the position of the two sets of swing arms 124. When the hydraulic rod 122 pushes a single swing arm 124, the two swing arms 124 can swing in the same direction, at the same angle and at the same speed, and drive the pipe 14 to stand up vertically. The surface of the swing arm 124 will be attached to the inner wall of the swing limiting plate 121, thereby limiting the verticality of the swing arm 124. Under the limitation of the swing arm 124, the pipe 14 is horizontal and the top surface of the support platform 122 is horizontal. Since the limiting sleeve 126 and the self-locking cover 127 are in close contact with the surface of the pipe 14, the limiting sleeve 126 and the self-locking cover 127 will limit the position of the pipe 14, so that the pipe 14 will not tilt slightly when the swing arm 124 moves and swings. The pipe 14 will always be in a horizontal state with the support platform 12. At the same time, the limiting sleeve 126 and the self-locking cover 127 can fix the pipe 14 while moving the pipe 14 to different positions and angles.

[0025] like Figures 1 to 6As shown, limiting rings 132 are symmetrically fixedly connected to both sides of the rotating disk 133. Two sets of support frames 137 are positioned at the upper and lower edges of the pipe 14. An arc-shaped limiting ring 131 is movably fitted onto the outer surface of the limiting ring 132. A limiting slider 13 is provided on the bottom surface of the arc-shaped limiting ring 131. A support frame 115 is fixedly installed on the bottom outer surface of the servo motor 116. A support platform 11 is fixedly installed on the bottom outer surface of the support frame 115. Four sets of limiting grooves 111 are provided on the top surface of the support platform 11 and at the four edges. Four sets of motors 112 are symmetrically fixedly installed on the two sides of the support platform 11. The output end of the motor 112 is fixedly connected to a threaded rod provided on the inner wall of the limiting groove 111. The outer surface of the limiting slider 13 is threadedly movably sleeved on the outer surface of the threaded rod. A support platform 2 113 is provided in the middle of the support platform 11. The outer surface of the plasma arc generator 114 is movably sleeved on the inner wall of the support platform 2 113.

[0026] After the pipe 14 is moved to the top edge of the support platform 11, the motor 112 rotates the threaded rod, causing the limiting slider 13 on the outer surface of the threaded rod to move towards the pipe 14. This causes the rotating disk 133 to fit onto the outer surface of the pipe 14. The hydraulic rod 135 then pushes the fitting positioning plate 136, causing it to adhere to the surface of the pipe 14, thus performing initial positioning of the pipe 14. At this time, the swing plate 1311 at one end of the support arm 1310... The polyurethane anti-slip layer 1312 inside the swing plate 1311 is tightly attached to the outer surface of the pipe 14. As the polyurethane anti-slip layer 1312 is pressed and deformed, it increases the friction between the polyurethane anti-slip layer 1312 and the pipe 14, so that the swing plate 1311 will not move on the surface of the pipe 14. When the four sets of support frames 137 on both sides of the rotating disk 133 provide large-scale support for the pipe 14, the rotating disk 133 is in a suspended state.

[0027] Working principle: The pipe 14 is placed on the top surface of the limiting sleeve 126. The self-locking cover 127 is closed and locked onto the top surface of the limiting sleeve 126, thus locking and limiting the position of the pipe 14. At this time, the hydraulic rod 122 pushes the surface of the swing arm 124, so that one end of the swing arm 124 is supported by the support platform 12, and the swing arm 124 gradually stands up. When the four sets of swing arms 124 are standing up, the limiting support arm 125 limits the position of the two sets of swing arms 124. When the hydraulic rod 122 pushes a single swing arm 124, the two swing arms 124 can swing in the same direction, at the same angle and at the same speed, and drive the pipe 14 to stand up vertically. The surface of the swing arm 124 will be in contact with the inner wall of the swing limiting plate 121, thus limiting the verticality of the swing arm 124. Under the limitation of the swing arm 124, the pipe 14 is horizontal and the top surface of the support platform 12. Since the limiting sleeve 126 and the self-locking cover 127 are in close contact with the surface of the pipe 14, the limiting sleeve 126 and the self-locking cover 127 will limit the position of the pipe 14, so that the pipe 14 will not tilt slightly when the swing arm 124 moves and swings. The pipe 14 will always be in a horizontal state with the support platform 12. At the same time, the limiting sleeve 126 and the self-locking cover 127 can fix the pipe 14 while moving the pipe 14 to different positions and angles. After the pipe 14 is moved to the top edge of the support platform 11, the motor 112 rotates the threaded rod, causing the limiting slider 13 on the outer surface of the threaded rod to move towards the pipe 14. This causes the rotating disk 133 to fit onto the outer surface of the pipe 14. The hydraulic rod 135 then pushes the fitting positioning plate 136, causing it to adhere to the surface of the pipe 14, thus performing initial positioning of the pipe 14. At this time, the swing plate 1311 at one end of the support arm 1310... The polyurethane anti-slip layer 1312 inside the swing plate 1311 is tightly attached to the outer surface of the pipe 14. As the polyurethane anti-slip layer 1312 is pressed and deformed, the polyurethane anti-slip layer 1312 increases the friction between it and the pipe 14, so that the swing plate 1311 will not move on the surface of the pipe 14. When the four sets of support frames 137 on both sides of the rotating disk 133 provide large-scale support for the pipe 14, the rotating disk 133 is in a suspended state. When pipe 14 moves into the rotating disk 133, the self-locking cover 127 is opened and closed, causing pipe 14 to move out of the limiting sleeve 126. At this time, the motor 112 rotates the threaded rod, causing the limiting slider 13 to carry pipe 14 to the center position of the support platform 11, and causing one end of the two pipes 14 to be connected. If there is a deviation at the connection between the two pipes 14, the hydraulic rod 138 moves the slider 139. At this time, the swing plate 1311 at one end of the support arm 1310 is in close contact with the surface of pipe 14. When the swing plate 1311... When pushing, the anti-slip and adhesive properties of the polyurethane anti-slip layer 1312 prevent the swing plate 1311 from moving on the surface of the pipe 14. As the slider 139 slides inside the support frame 137, the support arm 1310 pushes the swing plate 1311. As the swing plate 1311 is continuously raised, the pipe 14 on one side of the rotating disk 133 will tilt slightly, while the swing plate 1311 on the other side of the rotating disk 133 will press down on one end of the pipe 14, thereby adjusting the overall angle of the pipe 14. After the two pipes 14 are horizontally connected, the hydraulic rod 135 pushes the fitting positioning plate 136 tightly. Then, the position of the pipes 14 is squeezed and limited by multiple sets of hydraulic rods 135. At this time, the plasma arc generator 114 inside the support platform 113 moves and the output end of the plasma arc generator 114 is attached to the joint of the two pipes 14. At this time, the servo motor 116 rotates the transmission gear roller 117. The rotating transmission gear roller 117 drives the pushing teeth 134 on the outer surface of the rotating disk 133 to rotate together. At this time, the rotating disk 133 is limited and slides inside the arc-shaped limiting ring 131 under the limitation of the limiting rings 132 on both sides. As the rotating disk 133 rotates, it drives the pipes 14 to rotate, so that the output end of the plasma arc generator 114 slides at the joint of the pipes 14, thereby welding the joint of the two pipes 14.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency pipe welding device integrating centering and clamping functions, comprising a rotating disk (133) and two sets of pipes (14) movably sleeved inside the rotating disk (133), characterized in that: The outer surface of the rotating disk (133) is provided with push teeth (134), and four sets of hydraulic rods (135) are fixedly installed on the inner wall of the rotating disk (133). The output end of the hydraulic rods (135) is provided with a fitting positioning plate (136) that is movably sleeved on the outer surface of the pipe (14). Support frames (137) are fixedly connected to both sides of the rotating disk (133) and at the upper and lower edges. Hydraulic rods (138) are fixedly installed on the outer surface of the support frames (137). The output end of the hydraulic rods (138) is fixedly connected to the support frames (137) with a limit movable sleeve. A slider (139) is attached to the inner wall of the top. A support arm (1310) is oscillatingly connected to the outer surface of the slider (139). A swing plate (1311) is oscillatingly connected to the other end of the support arm (1310). A polyurethane anti-slip layer (1312) is provided on the outer surface of the swing plate (1311) and adheres to the outer surface of the pipe (14). A transmission gear roller (117) is movably sleeved on the outer surface of the push tooth (134). Two sets of servo motors (116) are provided at both ends of the transmission gear roller (117). A plasma arc generator (114) is provided at the joint of the two sets of pipes (14).

2. The high-efficiency pipe welding device integrating centering and clamping functions according to claim 1, characterized in that: The two sides of the rotating disk (133) are symmetrically fixedly connected with limiting collars (132), and the two sets of support frames (137) are positioned at the upper and lower edges of the pipe (14).

3. The high-efficiency pipe welding device integrating centering and clamping functions according to claim 2, characterized in that: An arc-shaped limiting ring (131) is movably fitted on the outer surface of the second limiting ring (132), and a limiting slider (13) is provided on the bottom surface of the arc-shaped limiting ring (131).

4. The high-efficiency pipe welding device integrating centering and clamping functions according to claim 3, characterized in that: The servo motor (116) has a support frame (115) fixedly installed on its bottom outer surface. The support frame (115) has a support platform (11) fixedly installed on its bottom outer surface. The support platform (11) has four sets of limiting grooves (111) on its top surface and at its four edges.

5. The high-efficiency pipe welding device integrating centering and clamping functions according to claim 4, characterized in that: Four sets of motors (112) are symmetrically fixedly installed on both sides of the support platform (11), and the output end of the motor (112) is fixedly connected to a threaded rod set on the inner wall of the limiting slide groove (111).

6. The high-efficiency pipe welding device integrating centering and clamping functions according to claim 4, characterized in that: The outer surface of the limiting slider (13) is threadedly fitted onto the outer surface of the threaded rod. The middle position of the first support platform (11) is provided with a second support platform (113). The outer surface of the plasma arc generator (114) is movably fitted onto the inner wall of the second support platform (113).

7. The high-efficiency pipe welding device integrating centering and clamping functions according to claim 4, characterized in that: Two sets of support platforms three (12) are symmetrically fixedly installed on both sides of the support platform one (11), and swing limiting plates (121) are fixedly connected to the top surface of the support platform three (12) and located at the two side edges.

8. The high-efficiency pipe welding device integrating centering and clamping functions according to claim 7, characterized in that: Four sets of swing arms (124) are oscillatingly connected to the two sides of the support platform (12) and inside the swing limiting plate (121). Two sets of limiting support arms (125) are movably sleeved on the outer surfaces of the two sets of swing arms (124), and limiting sleeves (126) are movably sleeved on the top surfaces of the four sets of swing arms (124).

9. A high-efficiency pipe welding device integrating centering and clamping functions according to claim 8, characterized in that: The top surface of the limiting sleeve (126) is oscillatingly connected to a self-locking cover (127), and the inner walls of the limiting sleeve (126) and the self-locking cover (127) are movably sleeved on the outer surface of the pipe (14).

10. A high-efficiency pipe welding device integrating centering and clamping functions according to claim 7, characterized in that: Two sets of hydraulic rods (122) are provided on the top surface of the support platform (12) and at the two side edges. The output end of the hydraulic rod (122) is fitted with a limiting collar (123). The inner wall of the limiting collar (123) is movably fitted on the outer surface of the swing arm (124).

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