A welding rolling platform for a double-wall steel cofferdam

Abstract

The present invention discloses a double-wall steel cofferdam welding rolling platform, which relates to the technical field of welding rolling platforms and includes a frame. A conveying roller is arranged on the frame and is used to discharge the welded pipe fittings. Installation components are arranged on both sides of the top of the frame and are used to control the movement of the pipe fittings. A fixed frame is arranged between the two installation components, and a welding component for welding the pipe fittings is arranged inside the fixed frame. For this double-wall steel cofferdam welding rolling platform, through knocking and vibration, dirt, oxide layers and other impurities on the surface of the pipe fittings can be removed, making the welding joints cleaner, which helps to improve the welding quality. The vibration of the knocking rod can eliminate air bubbles and slag in the welds, reduce welding defects, and thus improve the welding quality. In addition, the vibration of the knocking rod can also accelerate the heat transfer on the surface of the pipe fittings, making it easier for the pipe fittings to reach the required preheating temperature before welding, which can reduce the preheating time and improve the welding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of welding rolling platforms, and specifically to a double-wall steel cofferdam welding rolling platform. Background Art

[0002] Currently, the welding work of double-wall steel cofferdam pipe fittings is mostly carried out on a rolling platform. Such a rolling platform usually includes a horizontal workbench surface and a set of drive systems. The drive system can drive the double-wall steel cofferdam pipe fittings on the workbench surface to move, so that welders can weld the pipe fittings. During the welding process, welders usually use manual welding torches or automated welding equipment for operation;

[0003] However, there are still some deficiencies in the existing double-wall steel cofferdam welding rolling platforms in terms of welding efficiency and welding quality. Specifically, the following main problems exist in the prior art:

[0004] Insufficient pre-welding pretreatment: Before welding, the pretreatment of the surface of the pipe fittings often relies on manual grinding or simple mechanical cleaning. This method is not only inefficient, but also difficult to ensure the cleaning effect. If dirt, oxide layers and other impurities on the surface of the pipe fittings are not completely removed, it will seriously affect the quality and strength of the welded joints;

[0005] Lack of effective vibration cleaning during welding: During the welding process, due to the possible presence of minute oil stains, dust and other impurities on the surface of the pipe fittings, as well as air bubbles and slag generated during welding, these will all increase the risk of welding defects. There is a lack of an effective vibration cleaning mechanism in the prior art that can perform real-time cleaning and vibration on the surface of the pipe fittings during welding to reduce welding defects. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a double-wall steel cofferdam welding rolling platform, which solves the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A double-wall steel cofferdam welding rolling platform includes a frame. A conveying roller is arranged on the frame, and the conveying roller is used to discharge the welded pipe fittings. Installation components are arranged on both sides at the top of the frame, and the installation components are used to control the movement of the pipe fittings. A fixed frame is arranged between the two installation components, and a welding component for welding the pipe fittings is arranged inside the fixed frame;

[0008] The welding assembly includes fixing rings fixedly installed on both sides of the inner cavity of the fixing frame. The opposite ends of the two fixing rings are fixedly connected with an outer ring, and the inner end of the outer ring is fixedly connected with a toothed ring. A rectangular block is arranged between the two outer rings. The inner end of the rectangular block is provided with a welding gun through a control cylinder to adjust the welding distance between the welding gun and the pipe fitting through the control cylinder. A double-shaft motor is fixedly connected inside the rectangular block. The two ends of the double-shaft motor are fixedly connected with drive shafts, and the other ends of the drive shafts are fixedly connected with driving gears meshing with the toothed ring.

[0009] As a further preference of this technical solution, sliding grooves are opened at the opposite ends of the two outer rings, and the two ends of the rectangular block are fixedly connected with inner sliders slidably installed in the sliding grooves.

[0010] As a further preference of this technical solution, a semi-gear is fixedly connected to the outer wall of the drive shaft. A toothed frame slidably installed on the rectangular block is arranged outside the semi-gear, and the semi-gear is meshed and connected with the toothed frame. Knock rods for knocking the pipe fitting are fixedly connected to both sides of the bottom of the toothed frame.

[0011] As a further preference of this technical solution, a connecting frame is fixedly connected to the bottom end of the rectangular block. Cleaning blocks are slidably connected to both sides of the bottom of the connecting frame. One end of the cleaning block is fixedly connected with a guide rod, and a first damping spring is arranged between the cleaning block and the connecting frame.

[0012] As a further preference of this technical solution, an inner ring is fixedly connected to the inner end of the fixing ring through a support rod, and reciprocating grooves are opened at the opposite ends of the two inner rings. One end of the guide rod is slidably connected in the reciprocating groove.

[0013] As a further preference of this technical solution, cylinders are fixedly installed at the upper and lower ends of the fixing frame. The output ends of the cylinders are fixedly connected with a U-shaped frame. The two ends of the U-shaped frame are fixedly connected with lifting blocks. Slide rods are slidably connected to the lifting blocks, and the slide rods are fixedly installed on the fixing frame. A second damping spring sleeved on the slide rod is arranged at the bottom of the lifting block. A push rod is rotatably connected to the inner end of the lifting block, and the other end of the push rod is rotatably connected with a clamping block.

[0014] As a further preference of this technical solution, telescopic rods are arranged at both outer ends of the clamping block. The other ends of the telescopic rods are slidably connected with guide blocks, and the guide blocks are fixedly installed on the inner wall of the fixing ring. A third damping spring is sleeved on the telescopic rod.

[0015] As a further preference of this technical solution, the installation assembly includes a support frame fixedly installed on the machine frame. Rotating shafts are rotatably connected to both sides of the support frame. A plurality of connecting rods are arranged on both sides of the rotating shafts, and the plurality of connecting rods are arranged in a circumferential array. Guide wheels are arranged at the other ends of the connecting rods, and the distance between adjacent guide wheels is adapted to the diameter of the pipe fitting.

[0016] Compared with the prior art, the following beneficial effects are achieved:

[0017] The circumferential welding of pipe fittings can be carried out by a welding gun, realizing the automation of the welding process. This automated operation reduces manual intervention and significantly improves the welding efficiency. Driven by a dual-axis motor, the welding gun rotates circumferentially, enabling comprehensive and uniform welding of pipe fittings. This circumferential welding method not only improves the welding strength but also makes the weld seam more beautiful, enhancing the welding quality.

[0018] When the dual-axis motor drives the drive shaft to rotate, the drive shaft can drive the half-gear to rotate synchronously. In this way, during the rotation of the half-gear, it can drive the tooth frame to move up and down on the rectangular block. This up-and-down movement causes the rectangular block to drive the knocking rod to move up and down, so that the knocking rod can perform a knocking treatment on the pipe fitting. This knocking treatment method can effectively clean the surface of the pipe fitting to be welded by knocking and vibrating. Through knocking and vibrating, impurities such as dirt and oxide layers on the surface of the pipe fitting can be removed, making the welding joint cleaner. This helps to improve the welding quality, making the welding joint more firm and beautiful. During the welding process, the vibrating effect of the knocking rod can eliminate air bubbles and slag in the weld seam, reducing welding defects and thus improving the welding quality. In addition, the vibrating effect of the knocking rod can also accelerate the heat transfer on the surface of the pipe fitting, making it easier for the pipe fitting to reach the required preheating temperature before welding. This can reduce the preheating time and improve the welding efficiency. The vibrating effect of the knocking rod can also accelerate the cooling speed of the weld seam, making the welding process more rapid, thereby further improving the welding efficiency. Finally, the vibrating effect of the knocking rod can also reduce the friction and wear between the pipe fitting and the welding gun during the welding process. This can not only extend the service life of the equipment and tools but also improve the stability and reliability of the welding process.

[0019] Through the horizontal reciprocating movement of the cleaning block, such a design enables one cleaning block to perform friction cleaning on the surface of the pipe fitting to be welded, while the other cleaning block performs friction cleaning on the welding area of the pipe fitting. After the friction cleaning by the cleaning block, impurities such as oil stains, dust, and oxide layers on the surface of the pipe fitting to be welded can be effectively removed, thereby improving the surface cleanliness and providing a good contact surface for welding. Performing friction cleaning on the welding area of the pipe fitting can further remove impurities in the welding area, making the weld seam more flat, helping to reduce welding defects and improve the welding quality. The friction cleaning effect of the cleaning block can reduce defects such as weld seam discontinuity, pores, and slag caused by impurities during the welding process, thereby improving the strength and beauty of the weld seam. Since the cleaning block cleans the pipe fitting before and during welding, additional cleaning steps are reduced, thus improving the welding efficiency.

[0020] The clamping block will clamp the pipe fitting. The design of the clamping block can ensure that the pipe fitting is stably clamped during the welding process, thus preventing welding defects caused by the movement or shaking of the pipe fitting. In addition, when the push rod pushes the clamping block to move inward, it will provide a force to push the pipe fitting inward. This thrust can ensure the precise docking of the two pipe fittings to be welded, thereby reducing the welding error caused by the position deviation of the pipe fitting. Precise docking can reduce defects such as pores and slag inclusions in the weld, and thus improve the quality and strength of the weld. Description of the Drawings

[0021] Figure 1 Schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the structure of the installation component in the present invention;

[0023] Figure 3 Schematic diagram of the structure of the fixed frame and the welding component in the present invention;

[0024] Figure 4 Partial schematic diagram of the structure of the fixed ring, outer ring, guide block, and inner ring in the present invention;

[0025] Figure 5 Schematic cross-sectional view of the structure of the inner ring in the present invention;

[0026] Figure 6 Schematic diagram of the structure of the rectangular block, welding gun, connecting frame, cleaning block, and guide rod in the present invention;

[0027] Figure 7 Schematic diagram of the structure of the double-axis motor, drive shaft, driving gear, semi-gear, tooth frame, and knocking rod in the present invention;

[0028] Figure 8 Schematic diagram of the structure of the fixed frame, U-shaped frame, lifting block, push rod, and clamping block in the present invention.

[0029] In the figure: 1, frame; 2, mounting component; 3, fixed frame; 4, welding component; 11, conveying roller; 21, support frame; 22, rotating shaft; 23, connecting rod; 24, guide wheel; 41, fixed ring; 42, outer ring; 43, rectangular block; 44, welding gun; 45, chute; 46, slider; 47, gear ring; 48, dual-shaft motor; 49, drive shaft; 410, driving gear; 411, connecting frame; 412, cleaning block; 413, guide rod; 414, first damping spring; 415, inner ring; 416, half gear; 417, gear frame; 418, knocking rod; 419, cylinder; 420, U-shaped frame; 421, lifting block; 422, slide bar; 423, second damping spring; 424, pushing rod; 425, clamping block; 426, telescopic rod; 427, guide block; 428, third damping spring; 429, reciprocating groove. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Combining Figures 1 - 8 As shown, the present invention provides a technical solution: a double-wall steel cofferdam welding rolling platform, including a frame 1, a conveying roller 11 is arranged on the frame 1, and the conveying roller 11 is used to discharge the welded pipe fittings. Installation components 2 are arranged on both sides of the top of the frame 1, and the installation components 2 are used to control the movement of the pipe fittings. A fixed frame 3 is arranged between the two installation components 2, and a welding component 4 for welding the pipe fittings is arranged inside the fixed frame 3;

[0032] The welding component 4 includes fixed rings 41 fixedly installed on both sides of the inner cavity of the fixed frame 3. The opposite ends of the two fixed rings 41 are fixedly connected with an outer ring 42, and a gear ring 47 is fixedly connected to the inner side end of the outer ring 42. A rectangular block 43 is arranged between the two outer rings 42, and a welding gun 44 is arranged at the inner side end of the rectangular block 43 through a control cylinder. The welding distance between the welding gun 44 and the pipe fitting is adjusted through the control cylinder to ensure the accuracy of the welding process;

[0033] A dual-axis motor 48 is fixedly connected inside the rectangular block 43. Driving shafts 49 are fixedly connected to both ends of the dual-axis motor 48. The other ends of the driving shafts 49 are fixedly connected to driving gears 410 that mesh with the gear ring 47. By starting the dual-axis motor 48, the driving shafts 49 and the driving gears 410 on both sides rotate synchronously. Due to the meshing relationship between the driving gears 410 and the gear ring 47, the rectangular block 43 rotates circumferentially on the fixed ring 41, thereby driving the welding torch 44 to rotate circumferentially;

[0034] With this design, the welding torch 44 can perform circumferential welding on the pipe fittings, realizing the automation of the welding process. This automated operation reduces manual intervention and significantly improves the welding efficiency. The welding torch 44 rotates circumferentially under the drive of the dual-axis motor 48, enabling comprehensive and uniform welding of the pipe fittings. This circumferential welding method not only improves the welding strength but also makes the weld seam more beautiful, enhancing the welding quality;

[0035] To further ensure the stability of the welding process, sliding grooves 45 are provided at the opposite ends of the two outer rings 42. Inner sliders 46 that are slidably installed in the sliding grooves 45 are fixedly connected to both ends of the rectangular block 43. When the rectangular block 43 rotates circumferentially, the sliders 46 can slide within the sliding grooves 45. By providing the sliding grooves 45 and the sliders 46, the circumferential rotation of the rectangular block 43 is more stable, avoiding welding defects caused by vibration or uneven movement, thereby ensuring the reliability of the welding quality;

[0036] On the outer wall of the drive shaft 49, a half gear 416 is fixedly connected. On the outside of this half gear 416, a toothed frame 417 is provided. The toothed frame 417 can be slidably mounted on the rectangular block 43. The half gear 416 and the toothed frame 417 are meshed. On both sides of the bottom of the toothed frame 417, knocking rods 418 for knocking the pipe fittings are fixedly connected. When the double-shaft motor 48 drives the drive shaft 49 to rotate, the drive shaft 49 can drive the half gear 416 to rotate synchronously. In this way, during the rotation of the half gear 416, it can drive the toothed frame 417 to move up and down on the rectangular block 43. This up and down movement will cause the rectangular block 43 to drive the knocking rods 418 to move up and down, so that the knocking rods 418 knock the pipe fittings. This way of knocking can effectively clean the surface of the pipe fittings to be welded by knocking and vibrating. Through knocking and vibrating, dirt, oxide layers and other impurities on the surface of the pipe fittings can be removed, making the welded joint cleaner. This helps to improve the welding quality, making the welded joint more firm and beautiful. During the welding process, the vibrating effect of the knocking rods 418 can eliminate air bubbles and slag in the weld, reduce welding defects, and thus improve the welding quality. In addition, the vibrating effect of the knocking rods 418 can also accelerate the heat transfer on the surface of the pipe fittings, making it easier for the pipe fittings to reach the required preheating temperature before welding. This can reduce the preheating time and improve the welding efficiency. The vibrating effect of the knocking rods 418 can also accelerate the cooling speed of the weld, making the welding process more rapid, and thus further improving the welding efficiency. Finally, the vibrating effect of the knocking rods 418 can also reduce the friction and wear between the pipe fittings and the welding torch 44 during the welding process. This can not only extend the service life of the equipment and tools, but also improve the stability and reliability of the welding process;

[0037] At the bottom end of the rectangular block 43, a connecting frame 411 is fixedly connected. On both sides of the bottom of the connecting frame 411, cleaning blocks 412 are slidably connected. One end of the cleaning block 412 is fixedly connected to a guide rod 413. At the same time, a first damping spring 414 is arranged between the cleaning block 412 and the connecting frame 411. At the inner end of the fixed ring 41, an inner ring 415 is fixedly connected through a support rod. Opposite ends of the two inner rings 415 are provided with reciprocating grooves 429. One end of the guide rod 413 is located in the reciprocating groove 429 and can be slidably connected. When the rectangular block 43 rotates circumferentially, it can drive the connecting frame 411, the cleaning block 412, and the guide rod 413 to rotate synchronously in a circle. Since one end of the guide rod 413 is slidably installed in the reciprocating groove 429, when the guide rod 413 rotates circumferentially, under the action of the reciprocating groove 429 and in cooperation with the elastic force of the first damping spring 414, it can drive the guide rod 413 and the cleaning block 412 to move horizontally in a reciprocating manner. This design enables one cleaning block 412 to frictionally clean the surface of the pipe to be welded, while the other cleaning block 412 frictionally cleans the welded part of the pipe. Through the frictional cleaning of the cleaning block 412, impurities such as oil stains, dust, and oxide layers on the surface of the pipe to be welded can be effectively removed, thereby improving the surface cleanliness and providing a good contact surface for welding. Frictionally cleaning the welded part of the pipe can further remove impurities in the welding area, making the weld seam smoother, helping to reduce welding defects, and improving welding quality. The frictional cleaning effect of the cleaning block 412 can reduce defects such as discontinuous weld seams, pores, and slag inclusions caused by impurities during welding, thereby improving the strength and aesthetics of the weld seam. Since the cleaning block 412 cleans the pipe both before and during welding, additional cleaning steps are reduced, thus improving the welding efficiency;

[0038] At the upper and lower ends of the fixed frame 3, cylinders 419 are installed. The output ends of the cylinders 419 are fixedly connected to a U-shaped frame 420. The two ends of the U-shaped frame 420 are respectively fixedly connected to lifting blocks 421. The lifting blocks 421 are slidably connected to sliding rods 422 thereon, and the sliding rods 422 are fixedly installed on the fixed frame 3. At the bottom of the lifting blocks 421, second damping springs 423 sleeved on the sliding rods 422 are provided. The inner ends of the lifting blocks 421 are rotatably connected to push rods 424, and the other ends of the push rods 424 are rotatably connected to clamping blocks 425. The outer ends of the two sides of the clamping blocks 425 are provided with telescopic rods 426. The other ends of the telescopic rods 426 are slidably connected to guide blocks 427. The guide blocks 427 are fixedly installed on the inner wall of the fixed ring 41. At the same time, third damping springs 428 are sleeved on the telescopic rods 426. By activating the cylinders 419, the U-shaped frame 420 and the lifting blocks 421 can be driven to move inwards. In this way, the lifting blocks 421 will slide inwards on the sliding rods 422 and compress the second damping springs 423. As the lifting blocks 421 move, the push rods 424 will also move accordingly, and then push the clamping blocks 425 to move inwards. Under the elastic force of the third damping springs 428, the clamping blocks 425 will clamp the pipe fittings. The design of the clamping blocks 425 can ensure that the pipe fittings are stably clamped during the welding process, thus preventing welding defects caused by the movement or shaking of the pipe fittings. In addition, when the push rods 424 push the clamping blocks 425 to move inwards, a force pushing the pipe fittings inwards will be provided. This thrust can ensure the precise butt-joint of the two pipe fittings to be welded, thereby reducing welding errors caused by the position deviation of the pipe fittings. The precise butt-joint can reduce defects such as pores and slag inclusions in the weld seam, and thus improve the quality and strength of the weld seam.

[0039] In the embodiment of the present invention, by starting the cylinders 419, the U-shaped frame 420 and the lifting blocks 421 can be driven to move inwards. During this process, the lifting blocks 421 will slide inwards on the sliding rods 422 and compress the second damping springs 423. As the lifting blocks 421 move, they will drive the push rods 424, and then push the clamping blocks 425 to move inwards. The design of the clamping blocks 425 is very ingenious, which can ensure that the pipe fittings are stably clamped during the welding process, thus preventing welding defects caused by the movement or shaking of the pipe fittings. At the same time, when the push rods 424 push the clamping blocks 425 to move inwards, a force pushing the pipe fittings inwards will be provided. This thrust can ensure the precise butt-joint of the two pipe fittings to be welded;

[0040] In addition, by starting the biaxial motor 48, the drive shafts 49 on both sides can be driven to rotate synchronously with the driving gear 410. Due to the meshing relationship between the driving gear 410 and the gear ring 47, the rectangular block 43 can rotate circumferentially on the fixed ring 41. Driven by the biaxial motor 48, the drive shaft 49 can drive the half gear 416 to rotate synchronously. Furthermore, when the half gear 416 rotates, it drives the tooth frame 417 to move up and down on the rectangular block 43. In this way, the rectangular block 43 can drive the knocking rod 418 to move up and down to knock the pipe fitting, and this knocking vibration cleaning can effectively clean the surface of the pipe fitting to be welded, and can also perform knocking vibration cleaning on the pipe fitting during the welding process;

[0041] Meanwhile, when the rectangular block 43 rotates circumferentially, it can drive the connecting frame 411, the cleaning block 412 and the guide rod 413 to rotate synchronously in a circle. Since one end of the guide rod 413 is slidably installed in the reciprocating groove 429, during the circumferential rotation, under the action of the reciprocating groove 429 and in cooperation with the elastic force of the first damping spring 414, it drives the guide rod 413 and the cleaning block 412 to perform lateral reciprocating movement. In this way, one cleaning block 412 can perform friction cleaning on the surface of the pipe fitting to be welded, while the other cleaning block 412 can perform friction cleaning on the welding part of the pipe fitting;

[0042] Finally, during the circumferential rotation of the rectangular block 43, it can also drive the welding gun 44 to rotate in a circle. In this way, the welding gun 44 can perform circumferential welding on the pipe fitting to ensure the welding quality and efficiency.

[0043] Embodiment Two: As shown in combination with Figure 2 On the basis of Embodiment One, the installation component 2 includes a support frame 21 fixedly installed on the frame 1. Rotating shafts 22 are rotatably connected to both sides of the support frame 21. A plurality of connecting rods 23 are arranged on both sides of the rotating shafts 22, and the plurality of connecting rods 23 are arranged in a circumferential array. The other ends of the connecting rods 23 are provided with guide wheels 24, and the distance between adjacent guide wheels 24 is adapted to the diameter of the pipe fitting.

[0044] In an embodiment of the present invention, a servo motor can be arranged at one end of the rotating shaft 22 as required. The servo motor is used to drive the rotation of the rotating shaft 22, the connecting rod 23, and the guide wheel 24. By placing the pipe fitting into the support frame 21, the outer wall of the pipe fitting is brought into contact with the outer wall of the guide wheel 24. Then, the servo motor drives the rotating shaft 22, the connecting rod 23, and the guide wheel 24 to rotate inward. Under the action of gravity, the pipe fitting moves downward as the guide wheel 24 rotates. When the pipe fitting moves onto the conveying roller 11, the servo motor is turned off. After the welding assembly 4 finishes welding the pipe fitting, the welded pipe fitting is discharged by the conveying roller 11. Then, the servo motor is turned on again to drive the next pipe fitting to move downward. This process is repeated, enabling the welding assembly 4 to perform sequential welding on the pipe fittings. By driving the rotating shaft 22, the connecting rod 23, and the guide wheel 24 with the servo motor, the automatic feeding process of the pipe fittings is realized. This greatly reduces the need for manual feeding, improves production efficiency. At the same time, the automated operation also reduces errors caused by human factors, enhancing the stability and consistency of the production line.

[0045] Working principle of the double-wall steel cofferdam welding rolling platform:

[0046] Step 1: Sequentially place the pipe fittings to be welded into the support frame 21. The servo motor drives the rotating shaft 22, the connecting rod 23, and the guide wheel 24 to rotate inward. Under the action of gravity, the pipe fittings move downward as the guide wheel 24 rotates. When the pipe fittings move onto the conveying roller 11, the servo motor is turned off. After the welding assembly 4 finishes welding the pipe fittings, the welded pipe fittings are discharged by the conveying roller 11. Then, the servo motor is turned on again to drive the next pipe fitting to move downward. This process is repeated, enabling the welding assembly 4 to perform sequential welding on the pipe fittings;

[0047] Step 2: By activating the cylinder 419, drive the U-shaped frame 420 and the lifting block 421 to move inward, causing the lifting block 421 to slide on the inner side of the slide rod 422 and compress the second damping spring 423. The lifting block 421 drives the push rod 424 to move, and the push rod 424 pushes the clamping block 425 to move inward. Under the elastic force of the third damping spring 428, the clamping block 425 clamps the pipe fitting. The design of the clamping block 425 can ensure that the pipe fitting is stably clamped during welding, preventing welding defects caused by the movement or shaking of the pipe fitting. Moreover, when the push rod 424 pushes the clamping block 425 to move inward, a force is provided to push the pipe fitting inward. The thrust provided when the push rod 424 pushes the clamping block 425 to move inward can ensure the precise butt-joint of the two pipe fittings to be welded;

[0048] Step 3: Start the dual-axis motor 48 to drive the drive shafts 49 on both sides and the driving gears 410 to rotate synchronously. Due to the meshing relationship between the driving gear 410 and the toothed ring 47, the rectangular block 43 rotates circumferentially on the fixed ring 41. When the dual-axis motor 48 drives the drive shaft 49 to rotate, the drive shaft 49 can drive the half gear 416 to rotate synchronously, so that the half gear 416 drives the toothed frame 417 to move up and down on the rectangular block 43 when rotating, so that the rectangular block 43 drives the knocking rod 418 to move up and down, so that the knocking rod 418 knocks on the pipe fitting, so as to be able to perform knocking vibration cleaning on the surface of the pipe fitting to be welded, and can also perform knocking vibration cleaning on the pipe fitting during welding. When the rectangular block 43 rotates circumferentially, it can drive the connecting frame 411, the cleaning block 412, and the guide rod 413 to rotate synchronously in a circle. Since one end of the guide rod 413 is slidably installed in the reciprocating groove 429, when the guide rod 413 rotates in a circle, under the action of the reciprocating groove 429 and in cooperation with the elastic force of the first damping spring 414, it can drive the guide rod 413 and the cleaning block 412 to perform lateral reciprocating movement, so that one cleaning block 412 performs friction cleaning on the surface of the pipe fitting to be welded, and the other cleaning block 412 performs friction cleaning on the welded part of the pipe fitting;

[0049] Step 4: When the rectangular block 43 rotates in a circle, it can drive the welding gun 44 to rotate in a circle, so that the welding gun 44 can perform circumferential welding on the pipe fitting.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-wall steel cofferdam welding rolling platform, comprising a frame (1), characterized in that: A conveying roller (11) is arranged on the frame (1), and the conveying roller (11) is used to discharge the welded pipe fittings. Mounting components (2) are arranged on both sides of the top of the frame (1), and the mounting components (2) are used to control the movement of the pipe fittings. A fixed frame (3) is arranged between the two mounting components (2), and a welding component (4) for welding the pipe fittings is arranged inside the fixed frame (3); The welding component (4) includes fixed rings (41) fixedly installed on both sides of the inner cavity of the fixed frame (3). The opposite ends of the two fixed rings (41) are fixedly connected with an outer ring (42), and a gear ring (47) is fixedly connected to the inner end of the outer ring (42). A rectangular block (43) is arranged between the two outer rings (42). A welding gun (44) is arranged at the inner end of the rectangular block (43) through a control cylinder, and the welding distance between the welding gun (44) and the pipe fitting is adjusted through the control cylinder. A double-shaft motor (48) is fixedly connected inside the rectangular block (43). Driving shafts (49) are fixedly connected to both ends of the double-shaft motor (48), and a driving gear (410) meshing with the gear ring (47) is fixedly connected to the other end of the driving shaft (49); Chutes (45) are opened at the opposite ends of the two outer rings (42), and inner sliders (46) slidably installed in the chutes (45) are fixedly connected to both ends of the rectangular block (43); A half gear (416) is fixedly connected to the outer wall of the driving shaft (49). A tooth frame (417) slidably installed on the rectangular block (43) is arranged outside the half gear (416), and the half gear (416) is meshed with the tooth frame (417). Knocking rods (418) for knocking the pipe fittings are fixedly connected to both sides of the bottom of the tooth frame (417); A connecting frame (411) is fixedly connected to the bottom end of the rectangular block (43). Cleaning blocks (412) are slidably connected to both sides of the bottom of the connecting frame (411). A guide rod (413) is fixedly connected to one end of the cleaning block (412), and a first damping spring (414) is arranged between the cleaning block (412) and the connecting frame (411); Inner rings (415) are fixedly connected to the inner ends of the fixed rings (41) through support rods, and reciprocating grooves (429) are opened at the opposite ends of the two inner rings (415). One end of the guide rod (413) is slidably connected inside the reciprocating groove (429); Cylinders (419) are fixedly installed at the upper and lower ends of the fixed frame (3). The output ends of the cylinders (419) are fixedly connected with a U-shaped frame (420). Lifting blocks (421) are fixedly connected to both ends of the U-shaped frame (420). Slide rods (422) are slidably connected to the lifting blocks (421), and the slide rods (422) are fixedly installed on the fixed frame (3). Second damping springs (423) sleeved on the slide rods (422) are arranged at the bottoms of the lifting blocks (421). A push rod (424) is rotatably connected to the inner end of the lifting block (421), and a clamping block (425) is rotatably connected to the other end of the push rod (424); On both outer ends of the clamping block (425), telescopic rods (426) are provided. The other end of the telescopic rod (426) is slidably connected to a guide block (427), and the guide block (427) is fixedly installed on the inner wall of the fixed ring (41). A third damping spring (428) is sleeved on the telescopic rod (426). The installation component (2) includes a support frame (21) fixedly installed on the frame (1). Rotating shafts (22) are rotatably connected to both sides of the support frame (21). A plurality of connecting rods (23) are arranged on both sides of the rotating shaft (22), and the plurality of connecting rods (23) are arranged in a circumferential array. The other end of the connecting rod (23) is provided with a guide wheel (24), and the distance between adjacent guide wheels (24) is adapted to the diameter of the pipe fitting.

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