A welding mechanism for foundation pit pipe pile splicing construction

Abstract

The application belongs to the technical field of pipe pile welding, in particular to a welding mechanism for foundation pit pipe pile joint construction, which comprises two protective shells, a groove block and an insertion block are fixedly connected to each of the two protective shells, the groove block and the insertion block are connected through insertion and sliding, an arc-shaped sliding rail is fixedly connected to the lower end surface of the inner cavity of the protective shell, a sliding block one is slidingly connected to the inner side of the arc-shaped sliding rail, an outer shell is fixedly connected to one side of the upper end surface of the sliding block one, two guide rods are slidingly connected to one side of the outer shell, a welding gun is fixedly connected to one end of the guide rod, and a gap filling assembly is further arranged on the protective shell. In the welding process, the protective shell and the elastic flame-retardant cloth cooperate to cover the welding area, and the pollutants generated in the welding process are intercepted on the inner wall of the protective shell and the surface of the elastic flame-retardant cloth, thereby avoiding the splashing of pollutants to the surroundings.

Description

Technical Field

[0001] This invention belongs to the field of pipe pile welding technology, specifically a welding mechanism for foundation pit pipe pile splicing construction. Background Technology

[0002] Pipe piles are important vertical load-bearing components in the foundations of industrial and civil buildings, bridges, and other structures. They are driven into the ground through methods such as hammering, static pressure, or implantation to transfer the load of the superstructure to deep, stable soil layers. In foundation pit engineering, due to transportation limitations or the length of individual pile sections, pile splicing is often required. One of the most common splicing methods is to weld two pipe pile sections together to form a whole, ensuring its load-bearing performance as a continuous structural member.

[0003] Patent CN120228450B discloses an automatic pipe pile welding device, relating to the technical field of pipe pile welding. It includes a first fixing ring, a second fixing ring, a mounting frame, a welding torch, and a cleaning grinding head. The first fixing ring is mounted on the pipe pile via a first fixing cylinder, and the second fixing ring is mounted on the pipe pile via a second fixing cylinder. A roller is connected to the movable end of the second fixing cylinder. Two mounting frames are provided, each including a support rod and a mounting slide. The support rod is slidable relative to the first fixing ring and connected to the second fixing ring. The mounting slide is slidably connected to the support rod. The welding torch and the cleaning grinding head are respectively connected to the two mounting slides. The mounting slides are fixed to the support rod by a fixing component. The welding torch and the cleaning grinding head can be adjusted to move to the welding working position by an adjustment component. The mounting frame and the second fixing ring can be driven to rotate around the pipe pile by a driving component. This patent improves the automation level of on-site pipe pile welding.

[0004] However, the above technical solutions still have the following shortcomings in practical applications:

[0005] When splicing pipe piles, one section of pipe pile is typically driven into the ground first, and then another section is joined to it. A welding torch is then used to perform circumferential welding around the joint between the two sections. However, the welding process generates welding fumes, as well as sparks and metal particles that fly in all directions. These pollutants not only contaminate the surrounding work environment but may also ignite combustibles, causing fires, burn operators, and damage surrounding equipment and workpiece surfaces, resulting in safety accidents and economic losses. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a welding mechanism for the construction of foundation pit pipe pile splicing.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a welding mechanism for foundation pit pipe pile splicing construction, comprising two protective shells, on which a groove block and an insert block are fixedly connected respectively, the groove block and the insert block are inserted and slidably connected, an arc-shaped slide rail is fixedly connected to the lower end face of the inner cavity of the protective shell, a slider is slidably connected to the inner side of the arc-shaped slide rail, an outer shell is fixedly connected to one side of the upper end face of the slider, two guide rods are slidably connected to one side of the outer shell, a welding gun is fixedly connected to one end of the guide rods, and a gap filling component is also provided on the protective shell;

[0008] The gap filling assembly includes an elastic flame-retardant cloth fixedly connected to the upper and lower edges of the inner ring of the protective shell. Multiple traction columns are connected through and fixedly connected to the edge of the elastic flame-retardant cloth. An adjustment rod is slidably connected to the traction column, and the adjustment rod is slidably connected to the protective shell.

[0009] It also includes a support frame and a controller. A winding wheel is rotatably mounted on one side of the support frame. A power cord is wound on the winding wheel. The power cord passes through the bottom of one side of the protective shell and is slidably connected to it. The end of the power cord is fixedly connected to the current input end of the welding gun. Telescopic rods are fixedly connected to the upper and lower sides of the outer wall of the protective shell. A sliding plate is fixedly connected to the piston end of the telescopic rod.

[0010] Preferably, a positioning bolt is threadedly connected to one side of the groove block, and an insertion hole is provided on one side of the insertion block.

[0011] Preferably, a second gear is rotatably mounted on one side of the slider, the second gear meshing with the toothed blocks on the outer ring of the arc-shaped slide rail, and a fifth motor is fixedly connected to one side of the slider, the output end of the fifth motor being fixedly connected to the second gear.

[0012] Preferably, an electric actuator two is fixedly connected to one side of the inner cavity of the outer shell, the piston end of the electric actuator two is fixedly connected to one side of the welding gun, and a motor four is fixedly connected to one side of the support frame, the output end of the motor four is fixedly connected to the middle of the winding wheel.

[0013] Preferably, an adjusting arm is slidably connected to one side of the lower end face of the protective shell, a clamping block is fixedly connected to one end of the adjusting arm, a threaded rod is threadedly connected to one end of the adjusting arm, both ends of the threaded rod are rotatably mounted on the protective shell, and a second motor is fixedly connected to one side of the bottom of the protective shell, the output end of the second motor is fixedly connected to one end of the threaded rod.

[0014] Preferably, a cylinder is fixedly connected to both the upper and lower sides of the outer wall of the protective shell. The piston end of the cylinder is fixedly connected to one side of the slide plate. A connecting rod is rotatably provided at one end of the adjusting rod, and one end of the connecting rod is rotatably provided on the slide plate.

[0015] Preferably, it also includes a dust collection component;

[0016] The dust collection assembly includes a dust collection box fixedly connected to one side of the protective shell. A fan is connected and fixedly connected to one side of the dust collection box. A connecting pipe is connected to the air inlet end of the fan. An arc-shaped pipe is connected and fixedly connected to one end of the connecting pipe. Multiple air inlets are evenly arranged on the arc-shaped pipe. The air inlets penetrate the protective shell and are fixedly connected to it.

[0017] Preferably, it also includes auxiliary components for pollutant removal;

[0018] The pollutant removal auxiliary component includes a slider two slidably connected to the slide groove of the slide plate, a transverse plate slidably connected to one side of the slider two, an electric push rod three fixedly connected to one end of the transverse plate, a connecting block fixedly connected to the piston end of the electric push rod three, an eccentric wheel rotatably provided on one side of the connecting block, an extrusion plate fixedly connected to one end of the traction column, and a scraper fixedly connected to one side of the slider one, with the edge of the scraper fitting against the upper and lower surfaces and sides of the inner cavity of the protective shell.

[0019] Preferably, an electric push rod is fixedly connected to one side of the second slider, the piston end of the electric push rod is fixedly connected to one end of the transverse plate, a gear is rotatably provided on one side of the second slider, the gear meshes with the tooth block on one side of the slide plate, and a motor is fixedly connected to one side of the second slider, the output end of the motor is fixedly connected to the gear.

[0020] Preferably, a spring is fitted on one side of the traction column, one end of the spring is fixedly connected to the extrusion plate, and the other end is fixedly connected to the end of the adjusting rod. A motor is fixedly connected to one side of the connecting block, and the output end of the motor is fixedly connected to the middle of the eccentric wheel.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The welding mechanism for foundation pit pipe pile splicing construction described in this invention utilizes a protective shell and a gap-filling component. During the welding process, the protective shell and elastic flame-retardant cloth work together to cover the welding area. Contaminants generated during welding are intercepted on the inner wall of the protective shell and the surface of the elastic flame-retardant cloth. The elastic flame-retardant cloth has flame-retardant properties and will not ignite, thus preventing contaminants from splashing and polluting the surrounding work environment, causing fires, burns to operators, damage to surrounding equipment and workpiece surfaces, and preventing safety accidents. Furthermore, during welding, the generated contaminants can be drawn into a dust collection box through the air inlet, arc-shaped pipe, and connecting pipe by activating the exhaust fans on both sides, thus helping to maintain the cleanliness of the inner cavity of the protective shell and ensuring the long-term and stable use of the device.

[0023] 2. The welding mechanism for foundation pit pipe pile splicing construction described in this invention utilizes a pollutant removal auxiliary component. By shaking the elastic flame-retardant cloth at multiple points and scraping the inner wall of the protective shell, the position of metal particles can be changed in real time and their adhesion weakened. This makes it easier for the metal particles to be adsorbed by the negative pressure airflow, effectively improving the removal effect of pollutants inside the protective shell and further ensuring the cleanliness inside the protective shell. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the protective shell;

[0027] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the protective shell;

[0029] Figure 5 yes Figure 4 Enlarged view of a section at point B in the middle;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure at the transverse sliding plate.

[0031] Figure 7 yes Figure 6 Enlarged view of a section at point C;

[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the scraper.

[0033] Figure 9 This is a schematic diagram of the three-dimensional structure of the outer shell;

[0034] Figure 10 This is a schematic diagram of the three-dimensional structure of the elastic flame-retardant fabric.

[0035] Figure 11 yes Figure 10 Enlarged view of a section at point D.

[0036] In the diagram: 1. Protective shell; 2. Controller; 3. Motor 1; 4. Winding wheel; 5. Power cord; 6. Support frame; 7. Adjusting arm; 8. Arc tube; 9. Dust collection box; 10. Clamping block; 11. Telescopic rod; 12. Slide plate; 13. Cylinder 1; 14. Spring; 15. Insert block; 16. Groove block; 17. Positioning bolt; 18. Electric push rod 1; 19. Threaded rod; 20. Motor 2; 21. Scraper; 22. Welding torch; 23. Elastic flame-retardant cloth; 24. Traction column; 25. Arc-shaped slide rail; 26. Slider 1; 27. Housing; 28. Guide rod; 29. ​​Electric actuator 2; 30. Gear 1; 31. Slider 2; 32. Adjusting rod; 33. Connecting rod; 34. Transverse plate; 35. Eccentric wheel; 36. Motor 3; 37. Extrusion plate; 38. Air inlet; 39. Connecting pipe; 40. Exhaust fan; 41. Electric actuator 3; 42. Connecting block; 43. Motor 4; 44. Gear 2; 45. Motor 5. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please refer to Figures 1-11 The present invention provides a technical solution: a welding mechanism for foundation pit pipe pile splicing construction, comprising two protective shells 1, on which groove blocks 16 and insert blocks 15 are fixedly connected respectively. The groove blocks 16 and insert blocks 15 are inserted and slidably connected. An arc-shaped slide rail 25 is fixedly connected to the lower end face of the inner cavity of the protective shell 1. A slider 26 is slidably connected to the inner side of the arc-shaped slide rail 25. An outer shell 27 is fixedly connected to one side of the upper end face of the slider 26. Two guide rods 28 are slidably connected to one side of the outer shell 27. A welding gun 22 is fixedly connected to one end of the guide rods 28. A gap filling component is also provided on the protective shell 1.

[0039] The gap filling component includes an elastic flame-retardant cloth 23 fixedly connected to the upper and lower edges of the inner ring of the protective shell 1. Multiple traction columns 24 are connected through and fixedly connected to the edge of the elastic flame-retardant cloth 23. An adjustment rod 32 is slidably connected to the traction column 24 and the adjustment rod 32 is slidably connected to the protective shell 1.

[0040] It also includes a support frame 6 and a controller 2. A winding wheel 4 is rotatably installed on one side of the support frame 6. A power line 5 is wound on the winding wheel 4. The power line 5 passes through the bottom of one side of the protective shell 1 and is slidably connected to it. The end of the power line 5 is fixedly connected to the current input end of the welding gun 22. Telescopic rods 11 are fixedly connected to the upper and lower sides of the outer wall of the protective shell 1. A sliding plate 12 is fixedly connected to the piston end of the telescopic rod 11.

[0041] In this embodiment, as Figures 1-5 , Figures 8-11 As shown, a positioning bolt 17 is threadedly connected to one side of the groove block 16, and an insertion hole is provided on one side of the insertion block 15.

[0042] A gear 44 is rotatably mounted on one side of slider 26. Gear 44 meshes with the toothed blocks on the outer ring of the arc-shaped slide rail 25. A motor 45 is fixedly connected to one side of slider 26. The output end of motor 45 is fixedly connected to gear 44.

[0043] An electric actuator 29 is fixedly connected to one side of the inner cavity of the outer shell 27. The piston end of the electric actuator 29 is fixedly connected to one side of the welding torch 22. A motor 43 is fixedly connected to one side of the support frame 6. The output end of the motor 43 is fixedly connected to the middle of the winding wheel 4.

[0044] An adjusting arm 7 is slidably connected to one side of the lower end face of the protective shell 1. A clamping block 10 is fixedly connected to one end of the adjusting arm 7. A threaded rod 19 is threadedly connected to one end of the adjusting arm 7. Both ends of the threaded rod 19 are rotatably mounted on the protective shell 1. A second motor 20 is fixedly connected to one side of the bottom of the protective shell 1. The output end of the second motor 20 is fixedly connected to one end of the threaded rod 19.

[0045] Cylinder 13 is fixedly connected to both the upper and lower sides of the outer wall of the protective shell 1. The piston end of cylinder 13 is fixedly connected to one side of the slide plate 12. One end of the adjusting rod 32 is rotatably connected to the connecting rod 33, and one end of the connecting rod 33 is rotatably connected to the slide plate 12.

[0046] It also includes a vacuuming component;

[0047] The dust collection assembly includes a dust collection box 9 fixedly connected to one side of the protective shell 1. A fan 40 is connected and fixedly connected to one side of the dust collection box 9. A connecting pipe 39 is connected to the air inlet end of the fan 40. An arc-shaped pipe 8 is connected and fixedly connected to one end of the connecting pipe 39. Multiple air inlets 38 are evenly arranged on the arc-shaped pipe 8. The air inlets 38 penetrate the protective shell 1 and are fixedly connected to it.

[0048] Specifically, in existing technologies, when splicing pipe piles, one section of pipe pile is typically driven into the ground first, and then another section is joined to it. The welding torch 22 is then used to perform circumferential welding around the joint between the two sections. However, the welding process generates welding fumes and pollutants such as sparks and metal particles that fly in all directions. These pollutants not only contaminate the surrounding work environment but may also ignite combustibles, causing fires, burn operators, and damage surrounding equipment and workpiece surfaces, resulting in safety accidents and economic losses.

[0049] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0050] Move the controller 2, support frame 6, and two protective shells 1 to the periphery of the pipe pile to be welded. After the two pipe piles are connected, place the two protective shells 1 on both sides of the joint of the pipe piles. Then, insert the insert block 15 on one protective shell 1 into the groove block 16 on the other protective shell 1. Then rotate the positioning bolt 17 so that the positioning bolt 17 is inserted into the insertion hole of the insert block 15, thus connecting the two protective shells 1. At this time, the two protective shells 1 form a complete cylindrical structure, and the two pipe piles pass through the circular hole in the middle of this cylindrical structure. Then start the motors 20 on both sides. By driving the threaded rod 19 to rotate through the motors 20, the clamping blocks 10 on both sides move closer to each other until the clamping blocks 10 are in contact with the outer surface of the pipe pile. Under the clamping action of the clamping blocks 10, the protective shells 1 are fixed on the pipe piles, and the axis of the cylindrical structure formed by the two protective shells 1 coincides with the axis of the pipe piles.

[0051] At this time, if the size of the circular hole in the middle of the cylindrical structure does not match the diameter of the pipe pile, a certain gap will be generated between the hole wall and the surface of the pipe pile. Then, the cylinder 13 can drive the slide plate 12 to descend. At the same time, the piston end of the telescopic rod 11 retracts, and multiple connecting rods 33 can simultaneously drive multiple adjusting rods 32 to slide on the surface of the protective shell 1, so that the ends of multiple adjusting rods 32 simultaneously approach the surface of the pipe pile. Since the elastic flame-retardant cloth 23 is elastic, the edge of the elastic flame-retardant cloth 23 will approach the surface of the pipe pile under the traction of the traction column 24 until the traction column 24 is in contact with the surface of the pipe pile. At this time, the gap between the protective shell 1 and the surface of the pipe pile is filled by the elastic flame-retardant cloth 23. Then, using the electric actuator 29, the welding torch 22 is brought close to the joint of the two pipe piles, and the welding torch 22 is turned on. At the same time, the motor 5 45 drives the gear 2 44 to rotate. Under the meshing of the gear 2 44 and the outer ring tooth block of the arc-shaped slide rail 25, the slider 1 26 moves in a circle along the inner side of the arc-shaped slide rail 25. After the two protective shells 1 are connected, the two arc-shaped slide rails 25 are also connected. Therefore, the slider 1 26 can move from one arc-shaped slide rail 25 to the other arc-shaped slide rail 25, thus realizing circumferential welding. In addition, during the entire welding process, the protective shell 1 and the elastic flame-retardant cloth 23 cooperate to cover the welding area. The pollutants generated during the welding process will be intercepted on the inner wall of the protective shell 1 and the surface of the elastic flame-retardant cloth 23. The elastic flame-retardant cloth 23 has flame-retardant properties and will not be ignited. This avoids the situation where pollutants splash around, causing pollution to the surrounding working environment, fire, burns to operators, damage to surrounding equipment and workpiece surfaces, and prevents safety accidents. While this method prevents contaminants from splashing to the surrounding area, they will still accumulate inside the protective shell 1. With repeated welding operations, the amount of contaminants inside the protective shell 1 will gradually increase. During subsequent use, these contaminants may adhere to the joints of the pipe piles and form a barrier between the welding torch 22 and the surface of the pipe pile, potentially affecting the welding effect. Furthermore, excessive accumulation of contaminants on the surface of the elastic flame-retardant cloth 23 will also affect its elasticity, easily leading to gaps between the elastic flame-retardant cloth 23 and the surface of the pipe pile, creating blind spots, and also affecting the service life of the elastic flame-retardant cloth 23. Therefore, to avoid these problems, during the welding process, the exhaust fans 40 on both sides can be turned on to draw the generated contaminants into the dust collection box 9 through the air inlet 38, the arc-shaped pipe 8, and the connecting pipe 39. This helps maintain the cleanliness of the inner cavity of the protective shell 1, thereby ensuring the long-term and stable use of the device.

[0052] Furthermore, the power cord 5 is connected to the power source at one end outside the protective shell 1. During welding, the power cord 5 can be wound and unwound by the winding wheel 4 driven by the motor 43, based on the height of the pipe pile joint and the travel distance of the welding torch 22. This ensures that the unwound portion of the power cord 5 is within a reasonable length, guaranteeing smooth welding without causing tangling due to excessive length. This is a commonly used method for using the power cord 5 in the prior art. The specific connection method between the power cord 5 and the power source is a matter for those skilled in the art to determine, and will not be elaborated further here. Moreover, the above operations can be performed via the control buttons on the controller 2.

[0053] In this embodiment, as Figures 6-8 As shown, it also includes auxiliary components for pollutant removal;

[0054] The pollutant removal auxiliary component includes a second slider 31 slidably connected to the slide groove of the slide plate 12. A transverse plate 34 is slidably connected to one side of the second slider 31. An electric push rod 41 is fixedly connected to one end of the transverse plate 34. A connecting block 42 is fixedly connected to the piston end of the electric push rod 41. An eccentric wheel 35 is rotatably set on one side of the connecting block 42. A squeezing plate 37 is fixedly connected to one end of the traction column 24. A scraper 21 is fixedly connected to one side of the first slider 26. The edge of the scraper 21 is in contact with the upper and lower surfaces and sides of the inner cavity of the protective shell 1.

[0055] One side of slider 2 31 is fixedly connected to electric push rod 18. The piston end of electric push rod 18 is fixedly connected to one end of transverse plate 34. One side of slider 2 31 is rotatably equipped with gear 30. Gear 30 meshes with the tooth block on one side of slide plate 12. One side of slider 2 31 is fixedly connected to motor 3. The output end of motor 3 is fixedly connected to gear 30.

[0056] A spring 14 is fitted on one side of the traction column 24. One end of the spring 14 is fixedly connected to the extrusion plate 37, and the other end is fixedly connected to the end of the adjusting rod 32. A motor 36 is fixedly connected to one side of the connecting block 42. The output end of the motor 36 is fixedly connected to the middle of the eccentric wheel 35.

[0057] Specifically, in the above embodiments, although most of the contaminants inside the protective shell 1 can be drawn into the dust collection box 9, the negative pressure adsorption method itself cannot avoid adsorption dead zones. On the one hand, in areas with weak airflow coverage, contaminants are difficult to be effectively drawn in; on the other hand, for metal particles with strong adhesion, it is difficult to overcome their adsorption force simply by relying on negative pressure. In addition, some small metal particles are easily hidden inside the folds of the elastic flame-retardant cloth 23, where airflow is difficult to reach, forming typical adsorption dead zones, resulting in contaminant residue.

[0058] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0059] After the position adjustment rod 32 is adjusted, the electric push rod 18 drives the transverse plate 34 to slide on the slider 2 31, so that the eccentric wheel 35 is aligned with the extrusion plate 37 on one side. Then, the electric push rod 31 drives the eccentric wheel 35 to move, so that the eccentric wheel 35 is in contact with the extrusion plate 37 on one side. When the adsorption process begins, motor 3 drives gear 30 to rotate. Under the transmission of gear 30 and the toothed block, slider 31 slides back and forth inside the slide plate 12, moving from one end of the slide plate 12 to the other. At the same time, motor 36 drives eccentric wheel 35 to rotate. Whenever eccentric wheel 35 moves above a pressing plate 37, the distal end of eccentric wheel 35 will hit the pressing plate 37, causing traction column 24 to slide at the end of adjusting rod 32. When eccentric wheel 35 moves away from pressing plate 37, pressing plate 37 and traction column 24 will reset under the action of spring 14. This causes multiple traction columns 24 to slide intermittently, thereby causing the elastic flame-retardant cloth 23 to shake at multiple points. The shaking causes the metal particles hidden in the folds to move and be more easily adsorbed. Meanwhile, the slider 26 continues to slide back and forth in the arc-shaped slide rail 25. When the slider 26 slides, the scraper 21 scrapes the upper and lower surfaces and sides of the inner cavity of the protective shell 1, causing the metal particles with strong adhesion to be pushed, thereby weakening the adhesion between the metal particles and the inner wall of the protective shell 1. At the same time, since the position of the metal particles changes in real time, when the metal particles reach the area with strong airflow coverage, they can be smoothly sucked in, thereby effectively improving the removal effect of pollutants inside the protective shell 1 and further ensuring the cleanliness of the inside of the protective shell 1.

[0060] Working principle: Move the controller 2, support frame 6, and two protective shells 1 to the periphery of the pipe pile to be welded. After the two pipe piles are connected, place the two protective shells 1 on both sides of the joint of the pipe piles. Then, insert the insert block 15 on one protective shell 1 into the groove block 16 on the other protective shell 1. Then rotate the positioning bolt 17 to insert the positioning bolt 17 into the insertion hole of the insert block 15, thus connecting the two protective shells 1. At this time, the two protective shells 1 form a complete cylindrical structure, and the two pipe piles pass through the circular hole in the middle of this cylindrical structure. Then start the motors 20 on both sides. By driving the threaded rod 19 to rotate through the motors 20, the clamping blocks 10 on both sides move closer to each other until the clamping blocks 10 are in contact with the outer surface of the pipe pile. Under the clamping action of the clamping blocks 10, the protective shells 1 are fixed on the pipe piles, and the axis of the cylindrical structure formed by the two protective shells 1 coincides with the axis of the pipe piles. At this time, if the size of the circular hole in the middle of the cylindrical structure does not match the diameter of the pipe pile, a certain gap will be generated between the hole wall and the surface of the pipe pile. Then, the cylinder 13 can drive the slide plate 12 to descend. At the same time, the piston end of the telescopic rod 11 retracts, and multiple connecting rods 33 can simultaneously drive multiple adjusting rods 32 to slide on the surface of the protective shell 1, so that the ends of multiple adjusting rods 32 simultaneously approach the surface of the pipe pile. Since the elastic flame-retardant cloth 23 is elastic, the edge of the elastic flame-retardant cloth 23 will approach the surface of the pipe pile under the traction of the traction column 24 until the traction column 24 is in contact with the surface of the pipe pile. At this time, the gap between the protective shell 1 and the surface of the pipe pile is filled by the elastic flame-retardant cloth 23. Then, using the electric actuator 29, the welding torch 22 is brought close to the joint of the two pipe piles, and the welding torch 22 is turned on. At the same time, the motor 5 45 drives the gear 2 44 to rotate. Under the meshing of the gear 2 44 and the outer ring tooth block of the arc-shaped slide rail 25, the slider 1 26 moves in a circle along the inner side of the arc-shaped slide rail 25. After the two protective shells 1 are connected, the two arc-shaped slide rails 25 are also connected. Therefore, the slider 1 26 can move from one arc-shaped slide rail 25 to the other arc-shaped slide rail 25, thus realizing circumferential welding. In addition, during the entire welding process, the protective shell 1 and the elastic flame-retardant cloth 23 cooperate to cover the welding area. The pollutants generated during the welding process will be intercepted on the inner wall of the protective shell 1 and the surface of the elastic flame-retardant cloth 23. The elastic flame-retardant cloth 23 has flame-retardant properties and will not be ignited. This avoids the situation where pollutants splash around, causing pollution to the surrounding working environment, fire, burns to operators, damage to surrounding equipment and workpiece surfaces, and prevents safety accidents. Although this method can prevent contaminants from splashing to the surrounding area, the contaminants will still accumulate inside the protective shell 1. As welding work is carried out repeatedly, the amount of contaminants inside the protective shell 1 will gradually increase. During subsequent use, the contaminants inside the protective shell 1 may adhere to the joint of the pipe pile and form a barrier between the welding torch 22 and the surface of the pipe pile, which may easily affect the welding effect.Furthermore, when excessive pollutants accumulate on the surface of the elastic flame-retardant cloth 23, it will affect its elasticity, easily leading to gaps between the elastic flame-retardant cloth 23 and the surface of the pipe pile, forming a dead corner, and also affecting the service life of the elastic flame-retardant cloth 23. Therefore, to avoid the above problems, during the welding process, the exhaust fans 40 on both sides can be turned on to suck the generated pollutants into the dust collection box 9 through the air inlet 38, the arc-shaped pipe 8, and the connecting pipe 39, which helps to maintain the cleanliness of the inner cavity of the protective shell 1, thereby ensuring the long-term and stable use of the device. In addition, the power cord 5 is connected to the power source at one end outside the protective shell 1. During the welding process, the power cord 5 can be wound and unwound by the motor 43 driving the winding wheel 4 according to the height of the pipe pile joint and the length of the welding torch 22's travel distance, so that the unwound part of the power cord 5 is within a reasonable length range, which can ensure the smooth progress of the welding work and prevent the power cord 5 from easily tangling due to excessive length. This is a commonly used method for using the power cord 5 in the prior art. How the power cord 5 is connected to the power source is something those skilled in the art can reasonably configure themselves, and will not be elaborated further here. Furthermore, the above operations can be performed via the control buttons on the controller 2. After the orientation of the adjusting rod 32 is adjusted, the electric push rod 18 drives the transverse plate 34 to slide on the slider 2 31, aligning the eccentric wheel 35 with the extrusion plate 37 on one side. Then, the electric push rod 31 drives the eccentric wheel 35 to move, bringing the eccentric wheel 35 into contact with the extrusion plate 37 on one side. When the adsorption process begins, motor 3 drives gear 30 to rotate. Under the transmission of gear 30 and the toothed block, slider 31 slides back and forth inside the slide plate 12, moving from one end of the slide plate 12 to the other. At the same time, motor 36 drives eccentric wheel 35 to rotate. Whenever eccentric wheel 35 moves above a pressing plate 37, the distal end of eccentric wheel 35 will hit the pressing plate 37, causing traction column 24 to slide at the end of adjusting rod 32. When eccentric wheel 35 moves away from pressing plate 37, pressing plate 37 and traction column 24 will reset under the action of spring 14. This causes multiple traction columns 24 to slide intermittently, thereby causing the elastic flame-retardant cloth 23 to shake at multiple points. The shaking causes the metal particles hidden in the folds to move and be more easily adsorbed. Meanwhile, the slider 26 continues to slide back and forth in the arc-shaped slide rail 25. When the slider 26 slides, the scraper 21 scrapes the upper and lower surfaces and sides of the inner cavity of the protective shell 1, causing the metal particles with strong adhesion to be pushed, thereby weakening the adhesion between the metal particles and the inner wall of the protective shell 1. At the same time, since the position of the metal particles changes in real time, when the metal particles reach the area with strong airflow coverage, they can be smoothly sucked in, thereby effectively improving the removal effect of pollutants inside the protective shell 1 and further ensuring the cleanliness of the inside of the protective shell 1.

[0061] 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 welding mechanism for splicing foundation pit pipe piles, comprising two protective shells (1), characterized in that: The two protective shells (1) are respectively fixedly connected with a groove block (16) and an insert block (15). The groove block (16) and the insert block (15) are inserted and slidably connected. An arc-shaped slide rail (25) is fixedly connected to the lower end face of the inner cavity of the protective shell (1). A slider (26) is slidably connected to the inner side of the arc-shaped slide rail (25). An outer shell (27) is fixedly connected to one side of the upper end face of the slider (26). Two guide rods (28) are slidably connected to one side of the outer shell (27). A welding gun (22) is fixedly connected to one end of the guide rod (28). A gap filling component is also provided on the protective shell (1). The gap filling assembly includes an elastic flame-retardant cloth (23) fixedly connected to the upper and lower edges of the inner ring of the protective shell (1). Multiple traction columns (24) are fixedly connected through the edge of the elastic flame-retardant cloth (23). An adjusting rod (32) is slidably connected to the traction column (24). The adjusting rod (32) is slidably connected to the protective shell (1). It also includes a support frame (6) and a controller (2). A winding wheel (4) is rotatably provided on one side of the support frame (6). A power line (5) is wound on the winding wheel (4). The power line (5) passes through the bottom of one side of the protective shell (1) and is slidably connected to it. The end of the power line (5) is fixedly connected to the current input end of the welding gun (22). Telescopic rods (11) are fixedly connected to the upper and lower sides of the outer wall of the protective shell (1). A sliding plate (12) is fixedly connected to the piston end of the telescopic rod (11). A cylinder (13) is fixedly connected to the upper and lower sides of the outer wall of the protective shell (1). The piston end of the cylinder (13) is fixedly connected to one side of the sliding plate (12). A connecting rod (33) is rotatably provided at one end of the adjusting rod (32). One end of the connecting rod (33) is rotatably provided on the sliding plate (12). It also includes a pollutant removal auxiliary component. The pollutant removal auxiliary component includes a second slider (31) slidably connected to the groove of the slide plate (12). A transverse plate (34) is slidably connected to one side of the second slider (31). An electric push rod (41) is fixedly connected to one end of the transverse plate (34). A connecting block (42) is fixedly connected to the piston end of the electric push rod (41). An eccentric wheel (35) is rotatably provided on one side of the connecting block (42). A squeezing plate (37) is fixedly connected to one end of the traction column (24). A scraper (21) is fixedly connected to one side of the first slider (26). The edge of the scraper (21) is in contact with the upper and lower surfaces and the side of the inner cavity of the protective shell (1).

2. The welding mechanism for splicing foundation pit pipe piles according to claim 1, characterized in that: The groove block (16) has a positioning bolt (17) threadedly connected to one side, and the insert block (15) has an insertion hole on one side.

3. The welding mechanism for splicing foundation pit pipe piles according to claim 2, characterized in that: A gear 2 (44) is rotatably mounted on one side of the slider 1 (26). The gear 2 (44) meshes with the toothed block on the outer ring of the arc-shaped slide rail (25). A motor 5 (45) is fixedly connected to one side of the slider 1 (26). The output end of the motor 5 (45) is fixedly connected to the gear 2 (44).

4. The welding mechanism for splicing foundation pit pipe piles according to claim 1, characterized in that: An electric push rod two (29) is fixedly connected to one side of the inner cavity of the outer shell (27). The piston end of the electric push rod two (29) is fixedly connected to one side of the welding gun (22). A motor four (43) is fixedly connected to one side of the support frame (6). The output end of the motor four (43) is fixedly connected to the middle of the winding wheel (4).

5. The welding mechanism for splicing foundation pit pipe piles according to claim 1, characterized in that: An adjusting arm (7) is slidably connected to one side of the lower end face of the protective shell (1). A clamping block (10) is fixedly connected to one end of the adjusting arm (7). A threaded rod (19) is threadedly connected to one end of the adjusting arm (7). Both ends of the threaded rod (19) are rotatably mounted on the protective shell (1). A second motor (20) is fixedly connected to one side of the bottom of the protective shell (1). The output end of the second motor (20) is fixedly connected to one end of the threaded rod (19).

6. The welding mechanism for splicing foundation pit pipe piles according to claim 1, characterized in that: It also includes a vacuuming component; The dust collection assembly includes a dust collection box (9) fixedly connected to one side of the protective shell (1). A blower (40) is connected and fixedly connected to one side of the dust collection box (9). A connecting pipe (39) is connected to the air inlet end of the blower (40). An arc-shaped pipe (8) is connected and fixedly connected to one end of the connecting pipe (39). A plurality of air inlets (38) are evenly arranged on the arc-shaped pipe (8). The air inlets (38) penetrate the protective shell (1) and are fixedly connected to it.

7. The welding mechanism for splicing foundation pit pipe piles according to claim 1, characterized in that: One side of the second slider (31) is fixedly connected to an electric push rod (18), the piston end of the electric push rod (18) is fixedly connected to one end of the transverse plate (34), one side of the second slider (31) is rotatably provided with a gear (30), the gear (30) meshes with the tooth block on one side of the slide plate (12), one side of the second slider (31) is fixedly connected to a motor (3), the output end of the motor (3) is fixedly connected to the gear (30).

8. The welding mechanism for splicing foundation pit pipe piles according to claim 1, characterized in that: A spring (14) is fitted on one side of the traction column (24). One end of the spring (14) is fixedly connected to the extrusion plate (37), and the other end is fixedly connected to the end of the adjusting rod (32). A motor (36) is fixedly connected on one side of the connecting block (42). The output end of the motor (36) is fixedly connected to the middle of the eccentric wheel (35).

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