Synchronous welding mechanism and method for inner and outer seams of less-filler pebble bed steel pipe pile

Abstract

The invention belongs to the technical field of steel pipe pile welding, and particularly relates to a synchronous welding mechanism and method for inner and outer seams of a less-filler pebble bed steel pipe pile, the synchronous welding mechanism comprises a welding base, and a steel pipe pile bearing adjusting mechanism, a steel pipe pile synchronous positioning and clamping concentric mechanism and an outer welding rotation adjusting mechanism are arranged at the two ends of the top of the welding base respectively. The steel pipe pile bearing and adjusting mechanism achieves the action of bearing and adjusting the height size in the welding process of the two steel pipe piles. According to the inner and outer seam synchronous welding mechanism and method for the less-filler pebble bed steel pipe pile, in butt welding of the steel pipe pile, inner and outer welding synchronous operation is set, so that the mode that only outer wrapping welding can be conducted at present is reduced, and the production efficiency is greatly improved; the inner and outer welding seams are completed at the same time, the problems of stress concentration and nonuniformity caused by sequential welding are effectively avoided, and the overall quality and structural strength of the welding seams are improved; manual intervention is reduced due to the improvement of the automation degree, and the labor cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe pile welding, and particularly to a synchronous welding mechanism and method for the inner and outer seams of steel pipe piles in a pebble layer with less filler. Background Art

[0002] In the traditional technology of butt welding of steel pipe piles, there are a series of technical problems. First of all, the low welding efficiency is a prominent problem, because the traditional welding method usually can only perform external welding, and the welding of the inner weld requires additional processes and time, resulting in a long welding process. Secondly, it is difficult to guarantee the welding quality. Due to the asynchronous welding of the inner and outer welds, it is easy to cause uneven stress distribution in the weld, affecting the safety and stability of the structure. Moreover, the welding accuracy is insufficient. It is difficult to achieve precise alignment with the traditional welding method, resulting in large welding errors and affecting the welding quality. Therefore, a synchronous welding mechanism and method for the inner and outer seams of steel pipe piles in a pebble layer with less filler are needed. Summary of the Invention

[0003] Based on the existing technical problems, the present invention proposes a synchronous welding mechanism and method for the inner and outer seams of steel pipe piles in a pebble layer with less filler.

[0004] A synchronous welding mechanism for the inner and outer seams of steel pipe piles in a pebble layer with less filler proposed by the present invention includes a welding base, and both ends of the top of the welding base are respectively provided with a steel pipe pile support adjustment mechanism, a steel pipe pile synchronous positioning and clamping concentric mechanism, and an external welding rotation adjustment mechanism.

[0005] The steel pipe pile support adjustment mechanism realizes the action of supporting and adjusting the height dimension during the welding of two steel pipe piles.

[0006] The steel pipe pile synchronous positioning and clamping concentric mechanism realizes the action of concentric positioning during the welding of two steel pipe piles.

[0007] The external welding rotation adjustment mechanism realizes the action of adjusting the rotational movement during the welding of the outer arc surface of two steel pipe piles.

[0008] A welding mounting seat is fixedly installed at the center of the top of the welding base, and an external welding mechanism is arranged inside the welding mounting seat, and the external welding mechanism realizes the action of welding the outer arc of two steel pipe piles.

[0009] A pipeline traveling mechanism, an inner arc welding mechanism, and a welding positioning mechanism are further arranged inside the steel pipe pile pipeline placed inside the welding mounting seat, and the pipeline traveling mechanism realizes the action of the inner arc welding mechanism traveling inside the steel pipe pile.

[0010] The inner arc welding mechanism realizes the action of welding the inner arc seam of the steel pipe pile.

[0011] The welding positioning mechanism realizes the action of positioning the welding positions of the external welding mechanism and the inner arc welding mechanism.

[0012] Preferably, the four steel pipe pile supporting and adjusting mechanisms are all arranged and distributed on the top of the welding base. The steel pipe pile supporting and adjusting mechanism includes a vertical plate. Connecting strengthening columns are fixedly installed on the opposite surfaces of the two vertical plates. An inclined sliding groove is formed in the top side surface of the vertical plate. The inclined sliding grooves on the surfaces of the two vertical plates are symmetrically arranged. An adjusting screw plate is fixedly installed on the opposite surfaces of the middle parts of the two vertical plates. An adjusting screw rod is threadedly connected to the surface of the adjusting screw plate. A push plate is fixedly installed at the top of the adjusting screw rod. Adjusting sliding plates are slidably inserted at both ends of the top of the push plate. The top ends of the two adjusting sliding plates are both arc-shaped. Sliding screws are arranged in an array at both ends of the adjusting sliding plate. The surfaces of every three sliding screws are slidably inserted into the inner wall of one inclined sliding groove.

[0013] Preferably, pins are also fixedly installed at one ends of the tops of the two vertical plates. Side pressing plates are rotatably connected to the arc surfaces of the pins through bearings. Connecting top plates are fixedly installed in the middle parts of the two side pressing plates. Top pressing rods are slidably inserted into the bottom surfaces of the connecting top plates. The two top pressing rods are always pressed downward under the action of springs. Top pressing plates are fixedly installed at the bottoms of the two top pressing rods. The bottom of the top pressing plate is arc-shaped. The arc surfaces at the bottoms of the top pressing plate and the two adjusting sliding plates are in pressing contact with the outer arc surface of the steel pipe pile. Locking auxiliary plates are also fixedly installed at one ends of the two side pressing plates. Locking hooks are fixedly installed on the surfaces of the locking auxiliary plates. Locking pull rings are also fixedly installed at one ends of the tops of the two vertical plates. The pull rod of the locking pull ring is locked and connected with the locking hook.

[0014] Preferably, the steel pipe pile synchronous positioning and clamping concentric mechanism includes bearing seats. Sliding shafts are rotatably connected to the surfaces of every four bearing seats through bearings. Sliding blocks are slidably inserted into the arc surfaces at both ends of the sliding shaft. Clamping seats are fixedly installed at the tops of the two sliding blocks. The two clamping seats are symmetrically arranged. A telescopic cylinder is also fixedly installed at the top of the left end of the welding base. The telescopic end of the telescopic cylinder is fixedly installed with the bottom of the clamping seat.

[0015] Preferably, driving clamping rings are rotatably connected to both ends of the clamping seat through bearings. A lining pipe is rotatably connected to the inner wall of the clamping seat through a sealing ring. The lining pipe is located inside the two driving clamping rings. An air inlet pipe is fixedly installed on the outer arc surface of the clamping seat. An air outlet pipe is fixedly installed on the arc inner wall of the lining pipe. The air pressure of an air pump is input into the inside of the driving clamping ring through the air inlet pipe, and the air pressure is discharged from the air outlet pipe installed on the surface of the lining pipe through sealing by the sealing ring.

[0016] Preferably, one end of the driving clamping ring is threadedly connected with a positioning plate through a screw. The three positioning plates are annularly and arrayedly distributed inside the driving clamping ring. The inner wall of the inner lining pipe is linearly arranged with hinge seats along the axis. The surface of the hinge seat is hingedly installed with a micro cylinder through a pin shaft. The air inlet ends of the plurality of micro cylinders are fixedly communicated with the air outlet pipe through air pipes. The telescopic ends of the plurality of micro cylinders are installed with connecting cross bars through spherical bearings. Both ends of the connecting cross bar are fixedly installed with triangular driving plates. The opposite surfaces of the two triangular driving plates are also fixedly installed with support connecting rods. The surface of the triangular driving plate is provided with a driving sliding groove. A sliding rod is slidably inserted into the inner wall of the driving sliding groove. The surface of the positioning plate is provided with an auxiliary sliding groove. One end of the sliding rod is slidably inserted into the inner wall of the auxiliary sliding groove. A limiting gasket is also fixedly installed at one end of the sliding rod. The other end of the sliding rod is fixedly installed with a linkage rod. One end of the linkage rod is rotatably connected with a pressing shaft through a bearing. The arc surface of the pressing shaft is rotatably connected with a pressing roller through a bearing. The surfaces of the three pressing rollers are in pressing contact with the arc surface of the steel pipe pile.

[0017] Preferably, the external welding rotation adjustment mechanism includes a vertical mounting plate installed at the bottom of the clamping seat. One end of the vertical mounting plate is fixedly installed with a driving motor. The output end of the driving motor is fixedly installed with a driving shaft through a coupling. One end of the driving shaft is fixedly installed with a main driving pulley. One end of the driving clamping ring is also fixedly installed with a driven driving pulley. The grooves of the main driving pulley and the grooves of the driven driving pulley are both connected by a belt in transmission.

[0018] Preferably, the external welding mechanism includes an external welding electric telescopic rod installed on the inner arc wall of the welding mounting seat. The telescopic top end of the external welding electric telescopic rod is fixedly installed with an external welding torch;

[0019] The pipeline walking mechanism includes a triangular power plate. Guide and limit rods are fixedly installed on the opposite surfaces of the two triangular power plates. Triangular limit plates are fixedly installed at both ends of the three guide and limit rods. Threaded shafts are rotatably connected through bearings at the centers of the triangular limit plates and the corresponding triangular power plates. The two threaded shafts are arranged oppositely. A double-output shaft motor is fixedly installed at one end of the triangular power plate. The double-output shaft motor is located between the two triangular power plates. The two output ends of the double-output shaft motor are respectively fixedly installed on the opposite surfaces of the two threaded shafts through couplings. Triangular moving plates are threadedly connected to the threaded surfaces of the threaded shafts. First linkages are hinged to the three side surfaces of the triangular moving plates. Second linkages are hinged to the three end faces of the triangular power plates. The end face of the first linkage is hinged to the middle of the second linkage. A traveling wheel is installed at the end face of the second linkage through a pin shaft. The traveling wheel is driven by a power motor arranged on the surface of the second linkage to rotate the driving bevel gear, thereby driving the bevel gear connected to one end of the traveling wheel to rotate, and further realizing the rotation action of the traveling wheel.

[0020] Preferably, the inner arc welding mechanism includes an inner welding electric telescopic rod installed on the end face of the triangular limit plate. An inner welding welding torch is fixedly installed at the telescopic top end of the inner welding electric telescopic rod. The welding positions of the inner welding welding torch and the outer welding welding torch are respectively located at both ends of the horizontal plane of the steel pipe pile.

[0021] The welding positioning mechanism includes a connecting seat installed on the end face of the triangular power plate. A camera is fixedly installed on the side surface of the connecting seat. An inner neodymium iron boron magnet is fixedly installed at one end of the connecting seat. A positioning rod is also fixedly installed on the inner arc wall of the welding mounting seat. An outer neodymium iron boron magnet is fixedly installed at one end of the positioning rod. Rubber is wrapped around the outer layer of the inner neodymium iron boron magnet and the outer neodymium iron boron magnet.

[0022] A welding method for the inner and outer seam synchronous welding mechanism of a steel pipe pile in a pebble layer with less filler proposed by the present invention. Step 1: When welding two steel pipe piles after docking, first control the two steel pipe piles to be respectively located at both ends of the top of the welding base, and place them through the steel pipe pile supporting and adjusting mechanism. Then control the steel pipe pile synchronous positioning and clamping concentric mechanism to work, so that the air pressure enters the inside of the micro cylinder, thereby driving the connecting cross bar to move. By sliding the sliding rod in the driving chute and the auxiliary chute, the surface of the pressing roller is driven to press the arc surface of the steel pipe pile, so that the two steel pipe piles are concentrically positioned and clamped.

[0023] Step 2: After positioning and clamping, adjust the position of the sliding plates. Make the arc tops of the two adjusting sliding plates and the bottom arc surface of the top pressing plate at the top contact and press against the arc surface of the steel pipe pile. After the two steel pipe piles are supported, positioned and clamped, start the telescopic cylinder to move, drive one steel pipe pile to contact and butt with the other steel pipe pile, so that the welding position is inside the welding mounting seat.

[0024] Step 3: Drive the outer welding electric telescopic rod of the outer welding mechanism to extend and drive the welding needle of the outer welding torch to the welding position. Under the real-time monitoring of the camera, control the operation of the pipeline traveling mechanism. First, control the dual-output motor of the pipeline traveling mechanism to work and drive the threaded shaft to rotate, and then control the triangular moving plate to move, so that the first connecting rod swings to drive the second connecting rod to open, control the surface of the traveling wheel to squeeze and contact the inner wall of the steel pipe pile, and then control the traveling wheel to rotate and travel on the inner wall of the steel pipe pile. Under the monitoring of the camera, control the inner arc welding mechanism to reach the welding position inside the steel pipe pile. When the inner arc welding mechanism reaches the welding position, position it by the attraction of the inner neodymium iron boron magnet and the outer neodymium iron boron magnet.

[0025] Step 4: After the pipeline traveling mechanism is limited, start the inner welding electric telescopic rod to drive the welding needle of the inner welding torch to contact the inner seam of the steel pipe pile. At the same time, start the welding operations of the inner arc welding mechanism and the outer welding mechanism, so that the outer seam and the inner seam of the butt joint of the two steel pipe piles are welded at the same point. Then start the outer welding rotation adjustment mechanism, control the driving motor to rotate and drive the main driving pulley to rotate. Under the belt transmission, control the driven driving pulley to rotate, and then realize the rotational movement of the clamping ring, drive the steel pipe pile positioned by clamping to rotate synchronously, and then cooperate with the outer welding mechanism and the inner arc welding mechanism to operate, so as to realize the synchronous welding of the inner seam and the outer seam of the steel pipe pile.

[0026] Step 5: After welding is completed, control the release of the clamping state at one end of the top of the welding base and lock the other end. Through the switching operation of locking and releasing and in cooperation with the telescopic movement of the telescopic cylinder, drive the welded steel pipe pile to move and convey.

[0027] The beneficial effects of the present invention are as follows:

[0028] In this application, by setting synchronous internal and external welding operations during the butt welding of steel pipe piles, the current method of only outsourcing welding is reduced, and the production efficiency is greatly improved; the internal and external welds are completed simultaneously, effectively avoiding the problems of stress concentration and non-uniformity caused by sequential welding, and improving the overall quality and structural strength of the welds; the improvement of the automation level reduces manual intervention and labor costs; at the same time, the synchronous internal and external welding operations reduce material waste during the welding process; the use of camera and magnetic positioning technology ensures the accurate alignment of the welding position, reduces welding errors, and improves welding consistency; the welding mechanism of this design can also adapt to steel pipe piles with different diameters and lengths, has strong versatility, and is suitable for various welding scenarios. Description of the Drawings

[0029] Figure 1 It is a structural schematic diagram of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0030] Figure 2 It is a three-dimensional view of a synchronous positioning and clamping concentric mechanism for a steel pipe pile of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0031] Figure 3 It is a three-dimensional view of a steel pipe pile supporting and adjusting mechanism of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0032] Figure 4 It is a three-dimensional view of an adjusting slide plate structure of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0033] Figure 5 It is a front view of a clamping seat structure of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0034] Figure 6 It is a three-dimensional view of an outer welding rotation adjustment mechanism of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0035] Figure 7 It is a three-dimensional view of a vertical mounting plate structure of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0036] Figure 8 It is a three-dimensional exploded view of a synchronous positioning and clamping concentric mechanism for a steel pipe pile of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0037] Figure 9 It is a three-dimensional view of an outer welding mechanism of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0038] Figure 10 It is a three-dimensional view of a triangular drive plate structure of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0039] Figure 11 It is a three-dimensional view of a welding mounting seat structure of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0040] Figure 12 It is a three-dimensional view of a welding positioning mechanism of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0041] Figure 13 It is a three-dimensional view of an inner arc welding mechanism of a synchronous welding mechanism for the inner and outer seams of a steel pipe pile in a pebble layer with less filling material;

[0042] Figure 14 It is a three-dimensional view of a pipeline walking mechanism for a synchronous welding mechanism of internal and external seams of steel pipe piles in a pebble layer with less filling material.

[0043] In the figure: 1. Welding base; 2. Steel pipe pile supporting and adjusting mechanism; 21. Vertical plate; 22. Connecting and strengthening column; 23. Inclined sliding groove; 24. Adjusting screw plate; 25. Adjusting screw; 26. Pushing plate; 27. Adjusting sliding plate; 28. Sliding screw; 29. Pin shaft; 210. Side pressing plate; 211. Connecting top plate; 212. Top pressing rod; 213. Top pressing plate; 214. Locking auxiliary plate; 215. Locking hook; 216. Locking pull ring; 3. Steel pipe pile synchronous positioning and clamping concentric mechanism; 31. Bearing seat; 32. Sliding shaft; 33. Sliding block; 34. Clamping seat; 35. Telescopic cylinder; 36. Driving clamping ring; 37. Liner tube; 38. Air inlet pipe; 39. Air outlet pipe; 310. Positioning plate; 311. Hinge seat; 312. Micro cylinder; 313. Connecting cross bar; 314. Triangular driving plate; 315. Supporting connecting rod; 316. Driving sliding groove; 317. Sliding rod; 318. Auxiliary sliding groove; 319. Limiting gasket; 320. Linking rod; 321. Extrusion shaft; 322. Extrusion roller; 4. External welding rotation adjustment mechanism; 41. Vertical mounting plate; 42. Driving motor; 43. Driving shaft; 44. Main driving pulley; 45. Driven driving pulley; 46. Belt; 5. Welding mounting seat; 6. External welding mechanism; 61. External welding electric telescopic rod; 62. External welding welding torch; 7. Pipeline walking mechanism; 71. Triangular power plate; 72. Guide limiting rod; 73. Triangular limiting plate; 74. Threaded shaft; 75. Double output shaft motor; 76. Triangular moving plate; 77. First connecting rod; 78. Second connecting rod; 79. Walking wheel; 8. Inner arc welding mechanism; 81. Inner welding electric telescopic rod; 82. Inner welding welding torch; 9. Welding positioning mechanism; 91. Connecting seat; 92. Camera; 93. Inner neodymium iron boron magnet; 94. Positioning rod; 95. Outer neodymium iron boron magnet. Detailed implementation manners

[0044] 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.

[0045] Refer to Figures 1 - 14 , a synchronous welding mechanism for internal and external seams of steel pipe piles in a pebble layer with less filling material, including a welding base 1, and a steel pipe pile supporting and adjusting mechanism 2, a steel pipe pile synchronous positioning and clamping concentric mechanism 3, and an external welding rotation adjustment mechanism 4 are respectively arranged at both ends of the top of the welding base 1.

[0046] The steel pipe pile supporting and adjusting mechanism 2 realizes the action of supporting and adjusting the height dimension during the welding of two steel pipe piles. Four steel pipe pile supporting and adjusting mechanisms 2 are arranged and distributed on the top of the welding base 1. The steel pipe pile supporting and adjusting mechanism 2 includes a vertical plate 21. Connecting strengthening columns 22 are fixedly installed on the opposite surfaces of the two vertical plates 21. An inclined sliding groove 23 is formed in the top side surface of the vertical plate 21. The inclined sliding grooves 23 on the surfaces of the two vertical plates 21 are symmetrically arranged. An adjusting screw plate 24 is fixedly installed on the opposite surfaces of the middle parts of the two vertical plates 21. An adjusting screw rod 25 is threadedly connected to the surface of the adjusting screw plate 24. A push plate 26 is fixedly installed at the top of the adjusting screw rod 25. Adjusting sliding plates 27 are slidably inserted at both ends of the top of the push plate 26. The top ends of the two adjusting sliding plates 27 are in an arc shape. Sliding screws 28 are arrayed at both ends of the adjusting sliding plate 27. The surfaces of every three sliding screws 28 are slidably inserted into the inner wall of an inclined sliding groove 23.

[0047] Specifically, in this implementation, through the steel pipe pile supporting and adjusting mechanism 2, precise adjustment of the height dimension of two steel pipe piles during the welding process can be achieved, ensuring the welding quality; through the threaded connection between the adjusting screw plate 24 and the screw rod, fine adjustment of the height dimension of the steel pipe pile can be realized.

[0048] At one end of the top of the two vertical plates 21, a pin shaft 29 is also fixedly installed. The arc surface of the pin shaft 29 is rotatably connected to a side pressing plate 210 through a bearing. Connecting top plates 211 are fixedly installed in the middle parts of the two side pressing plates 210. A top pressing rod 212 is slidably inserted into the bottom surface of the connecting top plate 211. The two top pressing rods 212 are always pressed downward under the action of springs. Top pressing plates 213 are fixedly installed at the bottoms of the two top pressing rods 212. The bottom of the top pressing plate 213 is in an arc shape. The arc surface at the bottom of the top pressing plate 213 and the arc surfaces of the two adjusting sliding plates 27 are in pressing contact with the outer arc surface of the steel pipe pile. At one end of the two side pressing plates 210, a locking auxiliary plate 214 is also fixedly installed. A locking hook 215 is fixedly installed on the surface of the locking auxiliary plate 214. At one end of the top of the two vertical plates 21, a locking pull ring 216 is also fixedly installed. The pull rod of the locking pull ring 216 is locked and connected to the locking hook 215.

[0049] Specifically, in this implementation, the connecting top plate 211 is fixed in the middle of the two side pressing plates 210, and the bottom top pressing rod 212 is always pressed downward under the action of the spring, which can ensure that a certain pressure is maintained on the steel pipe pile during the welding process, helping to improve the welding quality; the locking hook 215 on the locking auxiliary plate 214 is locked and connected to the pull rod of the locking pull ring 216, which can firmly fix the position of the steel pipe pile and prevent displacement caused by external forces during the welding process; the uniform pressure distribution helps to form a uniform weld seam, reduce welding defects, and improve the welding quality.

[0050] The synchronous positioning, clamping and concentric mechanism 3 of steel pipe piles realizes the concentric positioning action during the welding of two steel pipe piles. The synchronous positioning, clamping and concentric mechanism 3 of steel pipe piles includes a bearing seat 31. The surfaces of every four bearing seats 31 are rotatably connected with sliding shafts 32 through bearings. The two ends of the sliding shaft 32 are slidably inserted with sliding blocks 33 on the arc surfaces. The tops of the two sliding blocks 33 are fixedly installed with clamping seats 34. The two clamping seats 34 are symmetrically arranged. The top of the left end of the welding base 1 is also fixedly installed with a telescopic cylinder 35. The telescopic end of the telescopic cylinder 35 is fixedly installed with the bottom of the clamping seat 34.

[0051] Specifically, it is implemented in this way. Through the combination of the bearing seat 31, the sliding shaft 32, the sliding block 33 and the clamping seat 34, this mechanism can realize the concentric positioning of two steel pipe piles during the welding process, ensuring the precise butt joint of the welding joints; the concentric positioning mechanism can quickly and accurately position the steel pipe piles, reducing the adjustment time and improving the welding efficiency; this mechanism can adapt to the welding of steel pipe piles with different diameters, having strong versatility and adaptability; the telescopic cylinder 35 can cooperate with the clamping opening and closing to achieve the effect of automatic conveying after the welding is completed.

[0052] Both ends of the clamping seat 34 are rotatably connected with driving clamping rings 36 through bearings. The inner wall of the clamping seat 34 is rotatably connected with a lining pipe 37 through a sealing ring. The lining pipe 37 is located inside the two driving clamping rings 36. An air inlet pipe 38 is fixedly installed on the outer arc surface of the clamping seat 34. An air outlet pipe 39 is fixedly installed on the arc inner wall of the lining pipe 37. The air pressure of the air pump is input into the inside of the driving clamping ring 36 through the air inlet pipe 38, and through the sealing of the sealing ring, the air pressure is discharged from the air outlet pipe 39 installed on the surface of the lining pipe 37.

[0053] Specifically, it is implemented in this way. The lining pipe 37 is rotatably connected to the inner wall of the clamping seat 34 through a sealing ring. This design can protect the surface of the steel pipe pile from damage during the clamping process and at the same time maintain the internal air pressure of the clamping seat 34; the design of the air inlet pipe 38 and the air outlet pipe 39 enables the air pump to control the clamping force of the clamping ring through air pressure; the air pressure can be precisely controlled, so as to achieve precise clamping force and ensure the stability of the steel pipe pile during the welding process; the air pressure clamping system reduces manual operation, reduces the risk of worker injury, and improves the safety of operation.

[0054] One end of the driving clamping ring 36 is connected to a positioning plate 310 through a screw thread, and the three positioning plates 310 are distributed in an annular array inside the driving clamping ring 36. The inner wall of the liner tube 37 is linearly arranged along the axis and is provided with an articulated seat 311. A micro cylinder 312 is hingedly installed on the surface of the articulated seat 311 through a pin shaft. The air inlet ends of the multiple micro cylinders 312 are fixedly connected to the air outlet pipe 39 through an air pipe, and the telescopic ends of the multiple micro cylinders 312 are installed with a connecting cross bar 313 through a ball bearing. Triangular driving plates 314 are fixedly installed at both ends of the connecting cross bar 313, and supporting connecting rods are also fixedly installed on the opposite surfaces of the two triangular driving plates 314. 315, a driving groove 316 is provided on the surface of the triangular driving plate 314, a sliding rod 317 is slidably inserted into the inner wall of the driving groove 316, an auxiliary groove 318 is provided on the surface of the positioning plate 310, one end of the sliding rod 317 is slidably inserted into the inner wall of the auxiliary groove 318, a limiting gasket 319 is fixedly installed on one end of the sliding rod 317, a connecting rod 320 is fixedly installed on the other end of the sliding rod 317, one end of the connecting rod 320 is rotatably connected to an extrusion shaft 321 through a bearing, the arc surface of the extrusion shaft 321 is rotatably connected to an extrusion roller 322 through a bearing, and the surfaces of the three extrusion rollers 322 are all in extrusion contact with the arc surface of the steel pipe pile.

[0055] Specifically implemented as follows, the telescopic ends of multiple micro cylinders 312 are connected to the triangular drive plate 314 through ball head bearings and connecting cross bars 313, so that multi-point distributed extrusion can be achieved to ensure uniform force on the steel pipe pile in the circumferential direction; through the micro cylinder 312 and the connecting rod 320 mechanism, the extrusion force can be flexibly adjusted to meet different welding requirements; multi-point extrusion helps to maintain the stability of the steel pipe pile during the welding process and reduce welding defects caused by vibration.

[0056] The external welding rotation adjustment mechanism 4 realizes the rotational motion adjustment action during the welding of the outer arc surfaces of two steel pipe piles. The external welding rotation adjustment mechanism 4 includes a vertical mounting plate 41 installed at the bottom of the clamping seat 34, and a driving motor 42 is fixedly installed at one end of the vertical mounting plate 41. A driving shaft 43 is fixedly installed at the output end of the driving motor 42 through a coupling, and a main driving pulley 44 is fixedly installed at one end of the driving shaft 43. A slave driving pulley 45 is also fixedly installed at one end of the driving clamping ring 36, and the grooves of the main driving pulley 44 and the grooves of the slave driving pulley 45 are both transmission-connected with a belt 46.

[0057] Specifically, through the precise control of the motor, the steel pipe pile can be rotated at a constant speed during the welding process, thereby ensuring uniform distribution of welding heat and avoiding local overheating or cold welding; uniform rotation movement helps to improve the quality of the weld and reduce welding defects such as cracks, pores, etc.

[0058] At the center of the top of the welding base 1, a welding mounting seat 5 is fixedly installed. Inside the welding mounting seat 5, an external welding mechanism 6 is provided. The external welding mechanism 6 realizes the action of welding the outer arcs of two steel pipe piles. The external welding mechanism 6 includes an external welding electric telescopic rod 61 installed on the inner wall of the arc of the welding mounting seat 5, and an external welding welding torch 62 is fixedly installed at the telescopic top of the external welding electric telescopic rod 61.

[0059] Specifically implemented in this way, the use of the external welding electric telescopic rod 61 enables the welding torch to quickly and accurately locate the outer arc welding position of the steel pipe pile, improving the welding efficiency; the operator can stay away from the welding site and perform welding operations through remote control or an automated control system, reducing the safety risks during the welding process.

[0060] Inside the steel pipe pile pipeline placed inside the welding mounting seat 5, there are also a pipeline walking mechanism 7, an inner arc welding mechanism 8, and a welding positioning mechanism 9. The pipeline walking mechanism 7 realizes the action of the inner arc welding mechanism 8 walking inside the steel pipe pile. The pipeline walking mechanism 7 includes a triangular power plate 71. On the opposite surfaces of the two triangular power plates 71, guiding and limiting rods 72 are fixedly installed. At both ends of the three guiding and limiting rods 72, triangular limiting plates 73 are fixedly installed. The centers of the triangular limiting plates 73 and the centers of the corresponding triangular power plates 71 are rotatably connected by bearings to threaded shafts 74. The two threaded shafts 74 are arranged oppositely. One end of the triangular power plate 71 is fixedly installed with a double-output shaft motor 75. The double-output shaft motor 75 is located between the two triangular power plates 71. The two output ends of the double-output shaft motor 75 are respectively fixedly installed on the opposite surfaces of the two threaded shafts 74 through couplings. A triangular moving plate 76 is threadedly connected to the threaded surface of the threaded shaft 74. Three side surfaces of the triangular moving plate 76 are hinged with first connecting rods 77. Three end faces of the triangular power plate 71 are hinged with second connecting rods 78. The end face of the first connecting rod 77 is hinged to the middle of the second connecting rod 78. The end face of the second connecting rod 78 is installed with a traveling wheel 79 through a pin shaft. The traveling wheel 79 is driven to rotate by the rotation of the driving bevel gear on the surface of the second connecting rod 78 driven by the power motor, thereby realizing the rotation action of the traveling wheel 79.

[0061] Specifically implemented in this way, through the pipeline walking mechanism 7, the full welding of the inner wall of the steel pipe pile can be realized, ensuring the integrity and strength of the welding; the design of the guiding and limiting rods 72 and the triangular limiting plates 73 ensures the precise positioning of the walking mechanism and avoids deviation during the welding process; the cooperation of the double-output shaft motor 75 and the threaded shaft 74, as well as the traveling wheel 79 driven by the power motor, realizes an efficient and stable walking action; the design of the triangular moving plate 76 and the linkage rod 320 enables the walking mechanism to adapt to the internal environment of steel pipe piles with different diameters.

[0062] The inner arc welding mechanism 8 realizes the action of welding the inner arc seam of the steel pipe pile. The inner arc welding mechanism 8 includes an inner welding electric telescopic rod 81 installed on the end face of the triangular limit plate 73. The telescopic top end of the inner welding electric telescopic rod 81 is fixedly installed with an inner welding torch 82. The welding positions of the inner welding torch 82 and the outer welding torch 62 are respectively located at both ends of the horizontal plane of the steel pipe pile.

[0063] Specifically, it is implemented in this way. The inner and outer weldings are carried out simultaneously, which reduces the total time required for welding and improves production efficiency; the inner and outer weld seams can be completed simultaneously, reducing the stress concentration and non-uniformity problems caused by sequential welding and improving the overall quality of the weld seam; the symmetrical design of the inner and outer welding positions helps to maintain the symmetry of the steel pipe pile structure and reduces welding deformation; the inner welding electric telescopic rod 81 can accurately control the position of the inner welding torch 82, making the inner arc welding more convenient and accurate.

[0064] The welding positioning mechanism 9 realizes the action of positioning the welding positions of the outer welding mechanism 6 and the inner arc welding mechanism 8. The welding positioning mechanism 9 includes a connecting seat 91 installed on the end face of the triangular power plate 71. A camera 92 is fixedly installed on the side of the connecting seat 91. One end of the connecting seat 91 is fixedly installed with an inner neodymium iron boron magnet 93. A positioning rod 94 is also fixedly installed on the arc inner wall of the welding mounting seat 5. One end of the positioning rod 94 is fixedly installed with an outer neodymium iron boron magnet 95. The outer layer of the inner neodymium iron boron magnet 93 and the outer neodymium iron boron magnet 95 are both wrapped with rubber.

[0065] Specifically, it is implemented in this way. Through the combination of the camera 92 and the magnet, precise positioning of the welding positions of the outer welding mechanism 6 and the inner arc welding mechanism 8 can be achieved; the camera 92 is installed on the connecting seat 91, which can monitor the welding position in real time and achieve precise alignment through image processing technology; by using the mutual attraction of the inner neodymium iron boron magnet 93 and the outer neodymium iron boron magnet 95, the inner and outer welding mechanisms 6 are limited. In the rotary welding of the steel pipe pile, the inner arc welding mechanism 8 is stationary and limited for welding operation. By setting rubber, the influence of the magnetism of the steel pipe pile is reduced.

[0066] In this application, in the butt welding of the steel pipe pile, by setting the inner and outer weldings to be synchronized, the current method of only outsourcing welding is reduced, and the production efficiency is greatly improved; the inner and outer weld seams are completed simultaneously, effectively avoiding the stress concentration and non-uniformity problems caused by sequential welding, and improving the overall quality and structural strength of the weld seam; the improvement of the automation level reduces manual intervention and reduces labor costs; at the same time, the synchronous operation of the inner and outer weldings reduces material waste during the welding process; by using the camera 92 and magnetic positioning technology, the precise alignment of the welding position is ensured, the welding error is reduced, and the welding consistency is improved; the welding mechanism of this design can also adapt to steel pipe piles with different diameters and lengths, has strong versatility, and is suitable for a variety of welding scenarios.

[0067] Reference Figures 1 - 3 , a welding method for a synchronous welding mechanism for internal and external seams of a steel pipe pile with a pebble layer of less filler. Step 1: When welding two steel pipe piles after butt joint, first control the two steel pipe piles to be located at both ends of the top of the welding base 1 respectively, and place them by means of the steel pipe pile supporting and adjusting mechanism 2. Then control the synchronous positioning and clamping concentric mechanism 3 of the steel pipe pile to work, so that the air pressure enters the inside of the micro cylinder 312, and then drives the connecting cross bar 313 to move. By sliding the sliding rod 317 inside the driving chute 316 and the auxiliary chute 318, the surface of the extrusion roller 322 is driven to extrude the arc surface of the steel pipe pile, so that the two steel pipe piles are concentrically positioned and clamped.

[0068] Step 2: After positioning and clamping, adjust the position of the moving adjusting slide plate 27, so that the arc tops of the two adjusting slide plates 27 and the bottom arc surface of the top pressing plate 213 on the top are in contact with and extrude the arc surface of the steel pipe pile. After the two steel pipe piles are supported, positioned and clamped, start the telescopic cylinder 35 to move, drive one steel pipe pile to contact and butt with the other steel pipe pile, so that the welding position is inside the welding mounting seat 5.

[0069] Step 3: The outer welding electric telescopic rod 61 of the driving outer welding mechanism 6 extends to drive the welding needle of the outer welding torch 62 to the welding position. Under the real-time monitoring of the camera 92, control the pipeline traveling mechanism 7 to work. First, control the double-output motor of the pipeline traveling mechanism 7 to drive the threaded shaft 74 to rotate, and then control the triangular moving plate 76 to move, so that the first connecting rod 77 swings to drive the second connecting rod 78 to open, control the surface of the traveling wheel 79 to be in contact with and extrude the inner wall of the steel pipe pile, and then control the traveling wheel 79 to rotate and travel on the inner wall of the steel pipe pile. Under the monitoring of the camera 92, control the inner arc welding mechanism 8 to reach the welding position inside the steel pipe pile. When the inner arc welding mechanism 8 reaches the welding position, it is positioned by the attraction of the inner neodymium iron boron magnet 93 and the outer neodymium iron boron magnet 95.

[0070] Step 4: After the pipeline traveling mechanism 7 is limited, start the inner welding electric telescopic rod 81 to drive the welding needle of the inner welding torch 82 to contact the inner seam of the steel pipe pile. At the same time, start the inner arc welding mechanism 8 and the outer welding mechanism 6 for welding operation, so that the outer seam and the inner seam of the butt joint of the two steel pipe piles are welded at the same point. Then start the outer welding rotation adjustment mechanism 4, control the driving motor 42 to rotate to drive the main driving pulley 44 to rotate, and control the driven driving pulley 45 to rotate under the transmission of the belt 46, so as to realize the rotational movement of the driving clamping ring 36, drive the clamped and positioned steel pipe pile to rotate synchronously, and then cooperate with the outer welding mechanism 6 and the inner arc welding mechanism 8 to operate, so as to realize the synchronous welding of the inner seam and the outer seam of the steel pipe pile.

[0071] Step Five: After welding is completed, release the clamping state at one end of the top of the welding base 1 and lock the other end. Through the switching operation of locking and releasing, cooperate with the telescopic movement of the telescopic cylinder 35 to drive the transported steel pipe pile after welding to move and be transported.

[0072] The above is only a preferred specific embodiment of the present invention, but 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 and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A synchronous welding mechanism for inner and outer seams of a steel pipe pile with a small amount of filler in a pebble layer, comprising a welding base (1), characterized in that: The top two ends of the welding base (1) are respectively provided with a steel pipe pile supporting adjustment mechanism (2), a steel pipe pile synchronous positioning clamping concentric mechanism (3) and an external welding rotation adjustment mechanism (4); The steel pipe pile supporting and adjusting mechanism (2) realizes the action of supporting and adjusting the height dimension of two steel pipe piles during welding; The steel pipe pile synchronous positioning and clamping concentric mechanism (3) realizes the concentric positioning action of two steel pipe piles during welding; The external welding rotation adjustment mechanism (4) realizes the rotational movement adjustment action during the welding of the outer arc surfaces of two steel pipe piles; A welding mounting seat (5) is fixedly mounted at the top center of the welding base (1), an external welding mechanism (6) is arranged inside the welding mounting seat (5), and the external welding mechanism (6) realizes the action of external arc welding of two steel pipe piles; A pipeline running mechanism (7), an inner arc welding mechanism (8) and a welding positioning mechanism (9) are also arranged inside the steel pipe pile pipeline placed inside the welding mounting seat (5); the pipeline running mechanism (7) enables the inner arc welding mechanism (8) to run inside the steel pipe pile; The inner arc welding mechanism (8) realizes the action of welding the inner arc seam of the steel pipe pile; The welding positioning mechanism (9) realizes the action of positioning the welding positions of the outer welding mechanism (6) and the inner arc welding mechanism (8).

2. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling material in pebble layer according to claim 1 is characterized in that: The four steel pipe pile supporting and adjusting mechanisms (2) are arranged and distributed on the top of the welding base (1), and the steel pipe pile supporting and adjusting mechanism (2) comprises a vertical plate (21), and the opposite surfaces of the two vertical plates (21) are fixedly installed with a connecting reinforcement column (22), and the top side of the vertical plate (21) is provided with an inclined slide groove (23), and the inclined slide grooves (23) on the surfaces of the two vertical plates (21) are symmetrically arranged, and the middle opposite surfaces of the two vertical plates (21) are fixedly installed with an adjusting screw plate (23). 4), the surface of the adjusting screw plate (24) is threadedly connected with an adjusting screw (25), the top of the adjusting screw (25) is fixedly installed with a push plate (26), the top ends of the push plate (26) are slidably plugged with adjusting slide plates (27), the top ends of the two adjusting slide plates (27) are both in arc shape, and the two ends of the adjusting slide plates (27) are arrayed with sliding screws (28), and the surfaces of every three sliding screws (28) are slidably plugged with the inner wall of one of the inclined slide grooves (23).

3. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling material and pebble layer according to claim 2 is characterized in that: A pin shaft (29) is fixedly installed at one end of the top of the two vertical plates (21), and the arc surface of the pin shaft (29) is rotatably connected to a side pressure plate (210) through a bearing. A connecting top plate (211) is fixedly installed in the middle of the two side pressure plates (210), and a top pressure rod (212) is slidably inserted on the bottom surface of the connecting top plate (211). The two top pressure rods (212) always move downward and squeeze under the action of a spring. A top pressure plate (213) is fixedly installed at the bottom of the two top pressure rods (212), and the top pressure plate (213) ) has an arc shape at the bottom, the bottom arc surface of the top pressure plate (213) and the arc surfaces of the two adjusting slides (27) are in compression contact with the outer arc surface of the steel pipe pile, one end of the two side pressure plates (210) is also fixedly installed with a locking auxiliary plate (214), and the surface of the locking auxiliary plate (214) is fixedly installed with a locking hook (215), and the top end of the two vertical plates (21) is also fixedly installed with a locking pull ring (216), and the pull rod of the locking pull ring (216) realizes a locking connection operation with the locking hook (215).

4. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling material in pebble layer according to claim 1 is characterized in that: The steel pipe pile synchronous positioning and clamping concentric mechanism (3) comprises a bearing seat (31), the surfaces of each of the four bearing seats (31) are rotatably connected to a sliding shaft (32) through a bearing, and sliding blocks (33) are slidably inserted into the arc surfaces at both ends of the sliding shaft (32), and the tops of the two sliding blocks (33) are fixedly installed with a clamping seat (34), and the two clamping seats (34) are symmetrically arranged. A telescopic cylinder (35) is also fixedly installed on the top of the left end of the welding base (1), and the telescopic end of the telescopic cylinder (35) is fixedly installed with the bottom of the clamping seat (34).

5. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling in pebble layer according to claim 4 is characterized in that: Both ends of the clamping seat (34) are rotatably connected to a driving clamping ring (36) via bearings, and the inner wall of the clamping seat (34) is rotatably connected to an inner lining tube (37) via a sealing ring. The inner lining tube (37) is located inside the two driving clamping rings (36). An air inlet pipe (38) is fixedly installed on the outer arc surface of the clamping seat (34), and an air outlet pipe (39) is fixedly installed on the arc inner wall of the inner lining tube (37). The air pressure of the air pump is input into the interior of the driving clamping ring (36) through the air inlet pipe (38), and is sealed by the sealing ring so that the air pressure is discharged from the air outlet pipe (39) installed on the surface of the inner lining tube (37).

6. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling material in pebble layer according to claim 5 is characterized in that: One end of the driving clamping ring (36) is connected to a positioning plate (310) via a screw thread, and three positioning plates (310) are distributed in an annular array inside the driving clamping ring (36). The inner wall of the inner liner tube (37) is linearly arranged along the axis and is provided with an articulated seat (311). A micro cylinder (312) is hingedly installed on the surface of the articulated seat (311) via a pin shaft. The air inlet ends of the plurality of micro cylinders (312) are fixedly connected to the air outlet pipe (39) via an air pipe, and the telescopic ends of the plurality of micro cylinders (312) are provided with a connecting cross bar (313) via a ball bearing. Both ends of the connecting cross bar (313) are fixedly installed with a triangular driving plate (314), and the opposing surfaces of the two triangular driving plates (314) are also fixedly installed with a supporting connecting rod (31 5), a driving groove (316) is provided on the surface of the triangular driving plate (314), a sliding rod (317) is slidably inserted into the inner wall of the driving groove (316), an auxiliary groove (318) is provided on the surface of the positioning plate (310), one end of the sliding rod (317) is slidably inserted into the inner wall of the auxiliary groove (318), one end of the sliding rod (317) is also fixedly installed with a limiting gasket (319), and the other end of the sliding rod (317) is fixedly installed with a connecting rod (320), one end of the connecting rod (320) is rotatably connected to an extrusion shaft (321) through a bearing, and the circular arc surface of the extrusion shaft (321) is rotatably connected to an extrusion roller (322) through a bearing, and the surfaces of the three extrusion rollers (322) are all in extrusion contact with the circular arc surface of the steel pipe pile.

7. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling material in pebble layer according to claim 5 is characterized in that: The external welding rotation adjustment mechanism (4) comprises a vertical mounting plate (41) mounted at the bottom of the clamping seat (34); a driving motor (42) is fixedly mounted on one end of the vertical mounting plate (41); a driving shaft (43) is fixedly mounted on the output end of the driving motor (42) via a coupling; a main driving pulley (44) is fixedly mounted on one end of the driving shaft (43); a slave driving pulley (45) is also fixedly mounted on one end of the driving clamping ring (36); and a belt (46) is connected to the groove of the main driving pulley (44) and the groove of the slave driving pulley (45) in transmission.

8. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling material in pebble layer according to claim 1 is characterized in that: The external welding mechanism (6) comprises an external welding electric telescopic rod (61) mounted on the inner wall of the arc of the welding mounting seat (5), and an external welding torch (62) is fixedly mounted on the telescopic top end of the external welding electric telescopic rod (61); The pipeline walking mechanism (7) comprises a triangular power plate (71), and the opposing surfaces of the two triangular power plates (71) are fixedly mounted with guide limit rods (72), and the two ends of the three guide limit rods (72) are fixedly mounted with triangular limit plates (73), and the center of the triangular limit plate (73) and the center of the corresponding triangular power plate (71) are rotatably connected with a threaded shaft (74) through a bearing, and the two threaded shafts (74) are arranged opposite to each other, and a dual-output shaft motor (75) is fixedly mounted on one end of the triangular power plate (71), and the dual-output shaft motor (75) is located between the two triangular power plates (71), and the two output ends of the dual-output shaft motor (75) are respectively connected to the triangular power plate (71) through a coupling. The relative surfaces of the two threaded shafts (74) are fixedly installed, and the threaded surface of the threaded shaft (74) is threadedly connected to a triangular movable plate (76). The three side surfaces of the triangular movable plate (76) are hinged with a first connecting rod (77). The three end surfaces of the triangular power plate (71) are hinged with a second connecting rod (78). The end surface of the first connecting rod (77) is hinged with the middle part of the second connecting rod (78). The end surface of the second connecting rod (78) is installed with a walking wheel (79) through a pin shaft. The walking wheel (79) is driven by the power motor arranged on the surface of the second connecting rod (78) to rotate the bevel gear, which drives the bevel gear connected to one end of the walking wheel (79) to rotate, thereby realizing the rotation of the walking wheel (79).

9. The synchronous welding mechanism for inner and outer seams of steel pipe piles with less filling material in pebble layer according to claim 8 is characterized in that: The inner arc welding mechanism (8) comprises an inner welding electric telescopic rod (81) mounted on the end surface of the triangular limiting plate (73); an inner welding welding gun (82) is fixedly mounted on the telescopic top end of the inner welding electric telescopic rod (81); the welding position of the inner welding welding gun (82) and the welding position of the outer welding welding gun (62) are respectively located at two ends of the horizontal plane of the steel pipe pile; The welding positioning mechanism (9) comprises a connecting seat (91) mounted on the end surface of the triangular power plate (71), a camera (92) is fixedly mounted on the side of the connecting seat (91), an inner neodymium iron boron magnet (93) is fixedly mounted on one end of the connecting seat (91), a positioning rod (94) is also fixedly mounted on the arc inner wall of the welding mounting seat (5), an outer neodymium iron boron magnet (95) is fixedly mounted on one end of the positioning rod (94), and the outer layer of the inner neodymium iron boron magnet (93) and the outer neodymium iron boron magnet (95) are both wrapped with rubber.

10. The welding method of the synchronous welding mechanism for the inner and outer seams of the steel pipe pile with less filling material in the pebble layer according to any one of claims 1 to 9, wherein the welding method comprises the following steps: Step 1: When two steel pipe piles are welded after being butted, the two steel pipe piles are first controlled to be located at the top ends of the welding base (1), and are supported and placed by the steel pipe pile support adjustment mechanism (2). The steel pipe pile synchronous positioning and clamping concentric mechanism (3) is controlled to work so that its air pressure enters the interior of the micro cylinder (312), thereby driving the connecting cross bar (313) to move, and the sliding rod (317) slides inside the driving slide groove (316) and the auxiliary slide groove (318), driving the surface of the squeezing roller (322) to squeeze the arc surface of the steel pipe pile, so that the two steel pipe piles are concentrically positioned and clamped; Step 2: After positioning and clamping, the position of the sliding plate (27) is adjusted by moving so that the arc tops of the two adjusting sliding plates (27) and the arc bottom surfaces of the top pressure plate (213) are in contact and squeezed with the arc surfaces of the steel pipe piles. After the two steel pipe piles are supported, positioned and clamped, the telescopic cylinder (35) is started to move, driving one steel pipe pile to contact and dock with the other steel pipe pile, so that the welding position is located inside the welding mounting seat (5); Step 3: driving the external welding electric telescopic rod (61) of the external welding mechanism (6) to extend and drive the welding needle of the external welding welding gun (62) to the welding position; under the real-time monitoring of the camera (92), controlling the pipeline walking mechanism (7) to work, first controlling the dual output motor of the pipeline walking mechanism (7) to work and drive the threaded shaft (74) to rotate, and then controlling the triangular moving plate (76) to move, so that the first connecting rod (77) swings and drives the second connecting rod (78) to open, controlling the surface of the walking wheel (79) to squeeze and contact with the inner wall of the steel pipe pile, and then controlling the walking wheel (79) to rotate and walk on the inner wall of the steel pipe pile; under the monitoring of the camera (92), controlling the inner arc welding mechanism (8) to come to the welding position inside the steel pipe pile; when the inner arc welding mechanism (8) comes to the welding position, the inner NdFeB magnet (93) and the outer NdFeB magnet (95) attract each other to position; Step 4: After the pipeline walking mechanism (7) is limited, the inner welding electric telescopic rod (81) is started to drive the welding needle of the inner welding welding gun (82) to contact the inner seam of the steel pipe pile, and the inner arc welding mechanism (8) and the outer welding mechanism (6) are started to weld at the same time, so that the outer seam and the inner seam of the two butted steel pipe piles are welded at the same time, and then the outer welding rotation adjustment mechanism (4) is started to control the driving motor (42) to rotate to drive the main driving pulley (44) to rotate, and the slave driving pulley (45) is controlled to rotate under the transmission of the belt (46), thereby realizing the driving clamping ring (36) to rotate, driving the clamped and positioned steel pipe pile to rotate synchronously, and then cooperating with the outer welding mechanism (6) and the inner arc welding mechanism (8) to realize the synchronous welding of the inner and outer seams of the steel pipe pile; Step 5: After welding is completed, the clamping state of one end of the top of the welding base (1) is released, and the other end is locked. Through the locking and releasing switching operation, the telescopic cylinder (35) is coordinated to move and transport the welded steel pipe pile.

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