Welding equipment for MPP electric power pipe installation

Abstract

The invention discloses mounting and welding equipment for an MPP electric power pipe, and belongs to the technical field of pipeline welding. The electric power pipe is convenient to transversely take and place by arranging overturning opening and closing type pipe fixing assemblies, and in the hot melting butt joint process, the pair of pipe fixing assemblies is oppositely driven, and the clamping position of an inner clamping plate is adjusted up and down; the butt joint positions of the electric power pipes are verified through the heating notches, the non-planar electric heating plate is arranged, on one hand, the alignment effect of the pair of electric power pipes is improved, on the other hand, by means of the hot melting mode of embedding and wrapping, the hot melting area is enlarged, the welding ends of the electric power pipes are evenly heated, and the welding quality of the electric power pipes is improved. The electric power pipe can be more easily kept in a stable state in the heating process, after hot melting is completed, the pair of electric heating plates oppositely move to be separated from the electric power pipe and descend to the bottom of the containing groove, a movable integrated installation mode is adopted, and the safety problem caused by back-and-forth taking and placing of a traditional heating device is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline welding, and more specifically, to a welding device for MPP power pipe installation. Background Art

[0002] In the construction of power engineering, MPP (modified polypropylene) power pipes are widely used in the protection and laying of power cables due to their excellent insulation performance, corrosion resistance, and relatively high mechanical strength. Especially in the fields of urban underground power grid renovation and high-voltage transmission line laying, as important infrastructure materials, the connection quality of MPP power pipes is directly related to the safety and stability of the entire power system.

[0003] Common connection methods for MPP power pipes mostly adopt hot melt butt welding technology. After heating both ends of the power pipe to a molten state, they are quickly butted, and a firm molecular chain bond is formed after cooling to achieve seamless connection. For example, the patent publication number CN115157193A discloses "A Pipeline Welding Hot Melt Machine Frame for Water Conservancy Projects", which realizes clamping and fixing two pipelines on the same horizontal line through the cooperation of the upper and lower opening and closing clamping plate B and clamping plate A.

[0004] However, in actual use, workers grasp the pull ring on the connecting column and pull it upward, causing the strong spring on the connecting column to contract and lift the clamping plate B upward. Then, the pipeline is placed flat on the concave surface of the clamping plate A, and the entire placement work of the pipeline requires the cooperation of multiple people. In addition, since the hot melt machine for welding and the adjustment block are designed as separate parts, the hot melt machine needs to be assembled onto the adjustment block during use. After hot melting, manually grasp the two fixed beams and pull them in opposite directions to remove the hot melt machine, which is dangerous during the movement of the hot melt machine.

[0005] Therefore, in view of the above problems, a welding device for MPP power pipe installation is proposed. Summary of the Invention

[0006] The purpose of the present invention is to solve the existing problems, and compared with the prior art, a welding device for MPP power pipe installation is provided.

[0007] The purpose of the present invention can be achieved by the following technical solutions: A welding device for MPP power pipe installation includes a support seat with arc-shaped transverse grooves opened at both the left and right ends. A fixed pipe component for clamping the power pipe is slidably installed in each of the pair of arc-shaped transverse grooves. Horizontal electric push cylinders for horizontally pushing the fixed pipe component are embedded and installed at both the left and right ends of the support seat. The fixed pipe component includes a fixed clamp that is slidably installed at the bottom of the arc-shaped transverse groove. A flipping clamp that is hinged to the fixed clamp and is arranged opposite to it is provided on the fixed clamp. Inner clamping plates are telescopically installed on the inner sides of the fixed clamp and the flipping clamp through electric push rods. A hollow groove for the horizontal movement of the lower flipping clamp is opened downward at the bottom of the arc-shaped transverse groove; A receiving groove is formed in the middle of the support base, which has upper and lower openings and is communicated with a pair of arc-shaped transverse grooves. A hot-melt component is installed in a lifting manner at the receiving groove. The hot-melt component includes a lifting seat that can move up and down inside the receiving groove. A hollow sleeve is fixedly installed in the middle of the lifting seat. Electric heating plates are horizontally driven and installed on both the left and right sides of the hollow sleeve. A heating notch adapted to the port of the power pipe is provided at the outer end of the electric heating plate.

[0008] Further, lower extension parts extending outwards are fixedly installed on both the upper and lower sides of the fixed clamp. Sliding grooves for the sliding installation of the lower extensions are formed at both the left and right ends of the support base. The telescopic end of the horizontal electric push cylinder penetrates through the sliding groove and is connected to the lower extension part.

[0009] Further, upper extension parts extending outwards are provided on both sides of the lower end of the flipping clamp. One of the upper extension parts is hingedly installed with the lower extension part. An arc-shaped buckling edge is provided on the side of the other upper extension part. An arc-shaped buckling plate elastically butted outside the arc-shaped buckling edge is rotatably installed at the upper end of the lower extension part.

[0010] Further, a strip-shaped groove is formed in the upper extension part. A rotating shaft connected to the bottom end of the arc-shaped buckling plate is rotatably installed in the strip-shaped groove. Both ends of the rotating shaft are connected to the inner wall of the strip-shaped groove through torsion springs.

[0011] Further, vertical electric push cylinders with telescopic ends connected to the upper end of the lifting seat are fixedly installed on both the front and rear sides of the upper end of the receiving groove. An arc-shaped receiving groove with the same outer diameter as the hollow sleeve is formed inside the lifting seat.

[0012] Further, a cylindrical groove with both ends open and adapted to the electric heating plate is formed inside the hollow sleeve. A power supply seat penetrating into the cylindrical groove is provided at one end of the electric heating plate facing the hollow sleeve. Moving seats are fixedly sleeved outside both pairs of power supply seats. A driving structure for synchronously driving the two moving seats in opposite directions is installed on the lifting seat.

[0013] Further, the driving structure includes a bidirectional screw rod rotatably installed between the opposite inner walls of the arc-shaped receiving groove and sequentially penetrating through the moving seat and the hollow sleeve. The left and right ends of the bidirectional screw rod are respectively threadedly installed with the bottoms of the two moving seats. A driving motor for rotating and driving the bidirectional screw rod is fixedly installed at the outer end of the lifting seat.

[0014] Further, transmission gears that are meshed and connected to each other are fixedly sleeved at one end of the bidirectional screw rod and the driving end of the bidirectional screw rod. A guide rod fixedly installed between the opposite inner walls of the two electric push rods also penetrates between the two moving seats.

[0015] Compared with the prior art, the advantages of the present invention are as follows: This solution is to set a fixed pipe component installed in a flip-open manner, which facilitates the horizontal placement of the power pipe on the inner clamping plate within the fixed clamp. After the flip clamp is reset and flipped to engage with the fixed clamp to complete the fixed mold closing, a pair of electric push rods arranged vertically are used to synchronously drive a pair of inner clamping plates to complete the clamping of the power pipe, drive a pair of fixed pipe components towards each other and adjust the clamping position of the inner clamping plates up and down until the ends of a pair of power pipes are fitted into the heating slots of the electric heating plate. The heating slots are used to check the docking position of the power pipes. An electric heating plate with a non-planar convex outward is set. On the one hand, it effectively improves the alignment effect of a pair of power pipes. On the other hand, compared with the traditional planar heating method, the hot melting method of fitting and wrapping not only expands the hot melting area of the power pipe ports, makes the welding ends of the power pipes uniformly heated, but also makes it easier for the power pipes to maintain a stable state during the heating process; After the hot melting is completed, a pair of electric heating plates move towards each other to disengage from the power pipes and descend to the bottom of the storage slot. The movable integrated installation mode is adopted to effectively avoid the safety problems caused by the back-and-forth picking and placing of the traditional heating device. After the hot melting component is quickly stored, drive a pair of power pipes towards each other to ensure the consistency of the docking force during the welding of a pair of power pipes. After the welding is completed, flip and move the flip clamp upwards to horizontally remove the welded power pipes. Brief Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram of the present invention when the power pipe is placed on the fixed pipe component; Figure 3 is a structural schematic diagram of the present invention when the fixed pipe components are combined; Figure 4 is an open-structural schematic diagram of the fixed pipe component of the present invention; Figure 5 is a structural schematic diagram of the combination of the arc-shaped fastening plate and the torsion spring of the present invention; Figure 6 is a side sectional view of the fixed pipe component of the present invention; Figure 7 is a structural schematic diagram of the hot melting component of the present invention; Figure 8 is a sectional view of the lifting seat of the hot melting component of the present invention; Figure 9 is a sectional view of the hollow sleeve of the hot melting component of the present invention; Figure 10 is a structural schematic diagram of the present invention when hot melting a pair of power pipes; Figure 11 is a structural schematic diagram of the present invention when welding a pair of power pipes.

[0017] Description of reference numerals in the figure: 1. Support base; 101. Arc-shaped horizontal groove; 102. Sliding groove; 103. Storage groove; 2. Fixed pipe assembly; 21. Fixed clamping hoop; 22. Flipping clamping hoop; 221. Arc-shaped clamping edge; 23. Inner clamping plate; 24. Electric push rod; 25. Arc-shaped clamping plate; 26. Torsion spring; 3. Hot melt assembly; 31. Hollow sleeve; 32. Moving seat; 33. Electric heating plate; 331. Heating notch; 34. Lifting seat; 35. Driving motor; 36. Bidirectional screw; 4. Horizontal electric push cylinder; 5. Vertical electric push cylinder; 6. Power pipe. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: Aiming at the problems of the traditional manually opening and closing pipe clamp in the up-and-down direction, which requires multiple people to cooperate in the entire placement work of the pipe, and the hot melt machine and the welding bracket are designed in a split manner. During use, the hot melt machine needs to be assembled onto the bracket, and after hot melting, the hot melt machine needs to be removed, and there is a risk during the movement of the hot melt machine. The following technical problems are now proposed: The present invention discloses a device for installing and welding MPP power pipes. Please refer to Figures 1 - 3 , including a support base 1. Arc-shaped horizontal grooves 101 are opened at both left and right ends of the support base 1. A fixed pipe assembly 2 for clamping and positioning the power pipe 6 is slidably installed in each of a pair of arc-shaped horizontal grooves 101. Horizontal electric push cylinders 4 for horizontally pushing the fixed pipe assembly 2 are embedded and installed at both left and right ends of the support base 1; The fixed pipe assembly 2 includes a fixed clamping hoop 21 slidably installed at the bottom of the arc-shaped horizontal groove 101. A flipping clamping hoop 22 is hinged to the fixed clamping hoop 21 and is arranged opposite to it. Inner clamping plates 23 are telescopically installed on the inner sides of the fixed clamping hoop 21 and the flipping clamping hoop 22 through electric push rods 24. A hollow groove for the horizontal movement of the lower flipping clamping hoop 22 is opened downward at the bottom of the arc-shaped horizontal groove 101.

[0020] Specifically, please refer to Figures 3 - 6, downward extension parts extending outward are fixedly installed on both the upper and lower sides of the fixed hoop 21. Sliding grooves 102 for the downward extension to slide and install are provided at both the left and right ends of the support base 1. The telescopic end of the horizontal electric push cylinder 4 penetrates through the sliding groove 102 and is connected to the downward extension part. Upper extension parts extending outward are provided on both sides of the lower end of the flipping hoop 22. One of the upper extension parts is hinged to the downward extension part, and an arc-shaped buckling edge 221 is provided on the side of the other upper extension part. An arc-shaped buckling plate 25 elastically butted outside the arc-shaped buckling edge 221 is rotatably installed at the upper end of the downward extension part; A strip-shaped groove is provided on the upper extension part. A rotating shaft connected to the bottom end of the arc-shaped buckling plate 25 is rotatably installed in the strip-shaped groove. Both ends of the rotating shaft are connected to the inner wall of the strip-shaped groove through torsion springs 26, and the fixed pipe assembly 2 with a flipping and buckling installation is set; In the initial state, a pair of inner clamping plates 23 are arranged to be far away from each other. After the flipping hoop 22 is flipped and opened outward, the pipe placement space of the fixed hoop 21 and the flipping hoop 22 is exposed. The power pipe 6 is horizontally placed on the inner clamping plate 23 inside the fixed hoop 21. The arc-shaped buckling plate 25 is forcefully pulled outward, and then the flipping hoop 22 is flipped and buckled onto the fixed hoop 21. The arc-shaped buckling plate 25 is released. The arc-shaped buckling plate 25 is reset to the arc-shaped buckling edge 221 under the action of the pair of torsion springs 26. By using the extrusion and buckling of the two, the free end of the flipping hoop 22 is fixed. Using the torsion spring 26 as a mechanical energy storage structure, a certain mechanical pressure is given to the arc-shaped buckling plate 25. The arc-shaped buckling plate 25 is buckled on the upper part of the arc-shaped buckling edge 221, and the fixed mold closing between the flipping hoop 22 and the inner clamping plate 23 is completed. This process only requires one worker to complete the placement work of the pipeline, and the operation is simple.

[0021] Then, the pair of inner clamping plates 23 are synchronously driven by the electric push rods 24 arranged up and down to complete the clamping of the power pipe 6. The inner clamping plates 23 that move up and down are suitable for positioning power pipes 6 of different sizes.

[0022] Please refer to Figure 1 , Figure 2 , a receiving groove 103 with upper and lower openings and communicating with a pair of arc-shaped transverse grooves 101 is provided in the middle of the support base 1. A hot melting assembly 3 is installed in the receiving groove 103 in a lifting manner. Vertical electric push cylinders 5 for driving the hot melting assembly 3 to lift are fixedly installed on both the front and rear sides of the upper end of the receiving groove 103; After a pair of power pipes 6 are positioned, wipe the welded ends of the pair of power pipes 6 and the heating surfaces on both sides of the hot-melt assembly 3 to remove dust and dirt. Drive the pair of pipe-fixing assemblies 2 towards each other until the ends of the pair of power pipes 6 come into contact with the heating surfaces on both sides of the hot-melt assembly 3, and complete the hot-melt treatment of the power pipes 6. After the hot-melt treatment is completed, drive the hot-melt assembly 3 downward to expose the welding space at the storage groove 103, and then drive the pair of pipe-fixing assemblies 2 towards each other until the welding ends of the pair of power pipes 6 come into contact, so as to ensure the consistency of the docking force when the pair of power pipes 6 are welded; Adopt a liftable and movable integrated installation mode, effectively avoiding the safety problems caused by the traditional heating device being taken and placed back and forth. After welding is completed, rotate the flipping hoop 22 upward, and the welded power pipe 6 can be taken out horizontally. Compared with the clamping method of manually opening and closing up and down, it effectively avoids the problems of unreasonable assembly design of the clamping structure and inconvenience in taking and placing the pipeline caused by the installation position.

[0023] After welding is completed, release the fixing mode of the arc-shaped buckling plate 25 on the flipping hoop 22, and then rotate the flipping hoop 22 upward, and the welded power pipe can be taken out horizontally. For the traditional up-and-down opening and closing type pipeline clamping structure, after welding is completed, one worker needs to manually lift the clamping plate upward again, and another worker needs to move the welded pipeline horizontally over a long distance to take it out from the hot-melter rack, which has certain operation drawbacks. This solution adopts a front-back flipping and opening and closing type pipeline clamping structure, which is convenient for horizontal taking and placing of the pipeline.

[0024] Embodiment 2: On the basis of Embodiment 1, the specific structure of the hot-melt assembly 3 will be further described in detail as follows: Please refer to Figures 7 - 11 , the hot-melt assembly 3 includes a lifting seat 34 that can move up and down inside the storage groove 103. A hollow sleeve 31 is fixedly installed in the middle of the lifting seat 34. Electric heating plates 33 are horizontally driven and installed on both the left and right sides of the hollow sleeve 31. A heating groove opening 331 adapted to the pipe orifice of the power pipe 6 is provided at the outer end of the electric heating plate 33. The telescopic ends of a pair of vertical electric push cylinders 5 are respectively fixedly connected to both sides of the upper end of the lifting seat 34. An arc-shaped accommodation groove with the same outer diameter as the hollow sleeve 31 is opened inside the lifting seat 34, and the hollow sleeve 31 is fixedly connected to the inner wall of the arc-shaped accommodation groove; A cylindrical groove with both ends open and adapted to the electric heating plate 33 is opened inside the hollow sleeve 31. A power supply base penetrating into the cylindrical groove is provided at one end of the electric heating plate 33 facing the hollow sleeve 31. A moving seat 32 is fixedly sleeved outside each of the pair of power supply bases. A driving structure for synchronously driving the pair of moving seats 32 in both directions is installed on the lifting seat 34; The driving structure includes a bidirectional screw 36 which is rotatably mounted between the opposite inner walls of the arc-shaped receiving groove and passes through the moving seat 32 and the hollow sleeve 31 in sequence. The left and right ends of the bidirectional screw 36 are respectively threadedly mounted on the bottom of a pair of moving seats 32. A driving motor 35 for rotating the bidirectional screw 36 is fixedly mounted on the outer end of the lifting seat 34. One end of the bidirectional screw 36 and the driving end of the bidirectional screw 36 are fixedly sleeved with mutually meshing transmission gears. A guide rod which is fixedly mounted between the opposite inner walls of a pair of electric push rods 24 is also passed through between the pair of moving seats 32. Electric heating plates 33 that slide inward and outward are added on both sides of the hollow sleeve 31. The electric heating plates 33 are also provided with heating notches 331 that are adapted to the mouths of the power tubes 6. The heating notches 331 are adapted to the different calibers of the power tubes 6. Electric heating plates 33 of different specifications are selected for installation. During the hot-melt docking process, a pair of fixed tube assemblies 2 are driven toward each other and the clamping position of the inner clamping plate 23 is adjusted up and down until the ends of a pair of power tubes 6 are embedded in the heating notches 331 of the electric heating plates 33. The docking position of the power tubes 6 is adjusted by the heating notches 331. During the calibration, a non-planar electric heating plate 33 protruding outward is provided, which can effectively improve the alignment effect of a pair of electric tubes 6 on the one hand, and on the other hand, compared with the traditional planar heating method, the embedded and wrapped heating mode is adopted, which not only expands the hot melting area of the pipe mouth of the electric tube 6, but also makes the welding end of the electric tube 6 evenly heated, reduces the heat loss to the surrounding environment, reduces the welding defects caused by uneven heating, improves the hot melting effect, and makes it easier for the electric tube 6 to maintain a stable state during the heating process, thereby reducing welding errors caused by movement or shaking of the heating plate.

[0025] After the hot-melting is completed, the driving motor 35 is started, and the bidirectional screw 36 is reversed, so that the pair of electric heating plates 33 move toward each other and separate from the hot-melted power pipe 6. At this time, the pair of vertical electric push cylinders 5 are used to drive the lifting seat 34 downward until the welding space of the receiving groove 103 is exposed; Then, a pair of fixed pipe assemblies 2 are driven toward each other until the hot-melt ends of the two power pipes 6 are butted against each other to complete the welding process. An integrated installation mode that can be lifted and moved is adopted, and there is no need for taking and placing work before and after hot melting. A quick storage action is performed after hot melting, so that a pair of power pipes 6 can complete the butt joint work as soon as possible in a short time, and the hot melting welding effect is effectively improved; In addition, the heated hot melt component 3 is stored at the bottom of the storage groove 103, which effectively avoids the safety issues caused by the traditional heating device being taken back and forth. In order to further facilitate the subsequent removal of pipes, the vertical electric push cylinder 5 can be set at the bottom of the storage groove, and its telescopic end is connected to the bottom end of the lifting seat 34. While realizing the lifting and lowering movement of the hot melt component, it also avoids the influence of the upward setting of the vertical electric push cylinder 5 on the removal of pipes.

[0026] In this solution, the fixed pipe assembly 2 installed by flipping and buckling is set. After the flipping hoop 22 is flipped and opened outward, it is convenient to horizontally place the power pipe 6 on the inner clamping plate 23 inside the fixed hoop 21, and then flip and buckle the flipping hoop 22 onto the fixed hoop 21. The arc-shaped buckling plate 25 elastically sleeved on the free end of the flipping hoop 22 is used to complete the fixed mold closing between the flipping hoop 22 and the inner clamping plate 23. Then, the pair of inner clamping plates 23 are synchronously driven by the electric push rods 24 arranged up and down to complete the clamping of the power pipe 6. The pair of fixed pipe assemblies 2 are driven towards each other until the ends of the pair of power pipes 6 are fitted into the heating slots 331 of the electric heating plate 33. The heating slots 331 on both sides of the hot melting assembly 3 are used to calibrate the butt joint position of the power pipe 6. During this process, the electric push rod 24 is adjusted up and down to make the center direction of the power pipe 6 consistent with the center direction of the electric heating plate 33; The electric heating plate 33 with a non-planar convex outward is set. On the one hand, it effectively improves the alignment effect of the pair of power pipes 6. On the other hand, compared with the planar heating method, it expands the hot melting area of the pipe orifice of the power pipe 6 and improves the hot melting effect of the pipe orifice of the power pipe 6. After the hot melting is completed, the pair of electric heating plates 33 move towards each other to disengage from the power pipe 6 and descend to the bottom of the storage slot 103. The movable assembled installation is adopted to effectively avoid the safety problems brought by the taking and placing of the traditional heating device.

[0027] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitution or change, and should be covered by the protection scope of the present invention.

Claims

1. A welding device for MPP power pipes installation, comprising a support base with arc-shaped horizontal grooves opened at both the left and right ends, and a pipe fixing assembly for clamping the power pipes is horizontally driven and installed in each of the pair of arc-shaped horizontal grooves through a horizontal electric push cylinder. It is characterized in that: The fixed pipe assembly includes a fixed clamp slidably installed in the arc-shaped transverse groove. A flipping clamp is rotatably hinged to the fixed clamp and is arranged in butt joint with the fixed clamp. Inner clamping plates are telescopically installed on the inner sides of the fixed clamp and the flipping clamp through electric push rods. A receiving groove with upper and lower openings and communicating with a pair of arc-shaped transverse grooves is formed in the middle of the support base. A hot melting assembly is installed in a lifting manner at the receiving groove. The hot melting assembly includes a lifting seat that can move up and down inside the receiving groove. A hollow sleeve is fixedly installed in the middle of the lifting seat. Electric heating plates are horizontally driven and installed on both the left and right sides of the hollow sleeve. A heating groove adapted to the pipe orifice of the power pipe is provided at the outer end of the electric heating plate.

2. The installation and welding equipment for MPP power pipes according to claim 1, wherein: Lower extension parts extending outwards are fixedly installed on both the upper and lower sides of the fixed clamp. Sliding grooves for the sliding installation of the lower extensions are formed at both the left and right ends of the support base. The telescopic end of the horizontal electric push cylinder penetrates through the sliding groove and is connected to the lower extension part.

3. A MPP power pipe installation and welding device according to claim 2, characterized in that: Upper extension parts extending outwards are provided on both sides of the lower end of the flipping clamp. One of the upper extension parts is hinged to the lower extension part. An arc-shaped buckling edge is provided on the side of the other upper extension part. An arc-shaped buckling plate that is elastically butted outside the arc-shaped buckling edge is rotatably installed at the upper end of the lower extension part.

4. A MPP power pipe installation and welding device according to claim 3, characterized in that: A strip-shaped groove is formed in the upper extension part. A rotating shaft connected to the bottom end of the arc-shaped buckling plate is rotatably installed in the strip-shaped groove. Both ends of the rotating shaft are connected to the inner wall of the strip-shaped groove through torsion springs.

5. A MPP power pipe installation and welding device according to claim 1, characterized in that: Vertical electric push cylinders with telescopic ends connected to the upper end of the lifting seat are fixedly installed on the front and rear sides of the upper end of the receiving groove. An arc-shaped receiving groove with the same outer diameter as the hollow sleeve is formed inside the lifting seat.

6. The installation and welding device for MPP power pipes according to claim 5, characterized in that: A cylindrical groove with both ends open and adapted to the electric heating plate is formed inside the hollow sleeve. A power supply seat penetrating into the cylindrical groove is provided at one end of the electric heating plate facing the hollow sleeve. Moving seats are fixedly sleeved outside a pair of power supply seats. A driving structure for synchronously driving the pair of moving seats in both directions is installed on the lifting seat.

7. The installation and welding equipment for MPP power pipes according to claim 6, characterized in that: The driving structure includes a bidirectional screw rod rotatably installed between the opposite inner walls of the arc-shaped receiving groove and sequentially penetrating through the moving seat and the hollow sleeve. The left and right ends of the bidirectional screw rod are respectively threadedly installed with the bottoms of the pair of moving seats. A driving motor for rotating and driving the bidirectional screw rod is fixedly installed at the outer end of the lifting seat.

8. A MPP power pipe installation and welding device according to claim 7, characterized in that: Driving gears that are meshed and connected are fixedly sleeved at one end of the bidirectional screw rod and the driving end of the bidirectional screw rod. A guide rod fixedly installed between the opposite inner walls of the pair of electric push rods also penetrates between the pair of moving seats.

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