A welding device for water conservancy construction pipeline and a method for using the same

Abstract

The application relates to the technical field of water conservancy construction, in particular to a welding equipment for a water conservancy construction pipeline and a use method thereof, which comprises a construction pipeline and a driving mechanism, a support roller frame and a connecting block are connected in an interlaced mode through clamping rotation and form a ring structure, the ring structure is used for providing a stable operation track for moving parts in the device; a polishing mechanism, a welding gun, a fan and an ultrasonic flaw detector are fixedly arranged on the connecting block. The support roller frame and the connecting block are connected in an interlaced clamping rotation mode to form a ring structure, the modularized track is used as a basis, the mechanization, integration and sequential operation of the whole pipeline welding process are realized, the inner diameter and the clamping force of the ring structure can be flexibly adjusted through cooperation of a threaded adjusting cylinder and a T-shaped clamping piece, the track type self-driving structure is adopted, the welding equipment does not depend on external hoisting or large auxiliary equipment, and the use range and flexibility are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline welding technology, and in particular to a welding device for hydraulic construction pipelines and its usage method. Background Technology

[0002] In the field of water conservancy engineering construction, pipelines serve as key carriers for core functions such as water resource transportation, flood control and drainage, and irrigation water supply. The construction quality of pipelines directly determines the operational safety, stability, and durability of water conservancy projects. Water conservancy construction pipelines are often laid underground, at the bottom of river channels, and around dams in complex working environments. They must withstand multiple effects, including water pressure, soil load, temperature changes, and groundwater erosion. As the weakest link in the pipeline structure, the welding quality of pipeline joints is a core point of quality control for the entire project. It directly relates to whether the pipeline will experience major safety hazards such as leakage and rupture, thereby affecting the normal operation of water conservancy projects and the reliability of regional water resource allocation.

[0003] With the rapid advancement of water conservancy infrastructure construction in my country, the requirements for pipeline welding technology are constantly increasing, whether it's large-scale inter-basin water transfer projects, urban flood control and drainage system renovation, rural irrigation network upgrades, or the construction of supporting pipelines for water conservancy hubs. The industry is gradually promoting the application of semi-automatic and fully automatic welding technologies, as well as intelligent welding equipment, such as automatic pipeline welding robots and digital welding power supplies. These technologies achieve precise control of the welding process through mechanical structure positioning and intelligent control mechanisms to adjust welding parameters, thereby improving welding efficiency and weld quality stability. Simultaneously, research on welding technologies under different working conditions focuses on improving welding materials, optimizing welding processes, and upgrading weld inspection technologies. For example, this includes developing specialized welding materials with high low-temperature resistance and corrosion resistance, optimizing the shielding gas ratio and welding current and voltage parameters for gas-shielded welding, and employing non-destructive testing technologies such as ultrasonic testing and radiographic testing to comprehensively inspect weld quality and reduce hidden defects.

[0004] Pipeline welding equipment often only possesses a single welding function, lacking effective integration for pre-weld surface treatment and post-weld quality inspection. This necessitates the use of multiple separate devices, increasing the complexity and time cost of the construction process. While existing equipment has evolved to integrate different functional components into a single unit, it struggles to adapt to varying pipe diameters. Existing integrated components, such as grinding, welding, and inspection heads, are compactly arranged within limited spaces. When the pipe diameter decreases, the modules may collide; when the diameter increases, the equipment's own weight causes sagging deformation, affecting alignment accuracy and hindering the rapid and convenient adaptation to diverse construction needs. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a welding device for water conservancy construction pipelines and a method for using it, which is capable of...

[0006] This invention provides a welding device for hydraulic construction pipelines, including a drive mechanism disposed on the outer side of the construction pipeline. The drive mechanism includes multiple support roller frames and multiple connecting blocks. The support roller frames and connecting blocks are interlocked by a snap-fit ​​rotation method and form a closed-loop ring structure. One of the support roller frames is fixedly equipped with a drive roller, which drives the drive mechanism. The other support roller frames are rotatably equipped with driven rollers. The connecting block includes a fixed connecting plate, on which functional components are fixedly installed. The fixed connecting plate is equipped with an adjustment mechanism for adjusting the inner diameter of the annular structure and the clamping force of the construction pipeline. The adjustment mechanism includes symmetrically distributed threaded adjusting cylinders. Both ends of the threaded adjusting cylinders are connected to T-shaped clamps by threads. The inner diameter of the annular structure can be flexibly adjusted by the cooperation of the threaded adjusting cylinders and the T-shaped clamps. The two T-shaped clamps are provided with threaded adjusting rings with opposite thread directions at their closest ends. The T-shaped clamps are slidably connected to the fixed connecting plate.

[0007] Optionally, the support roller frame is a right-angled frame, including a first plate and a second plate that are perpendicular to each other. A through groove is provided at the connection between the first plate and the second plate. The drive roller and the driven roller are arranged inside the through groove, and the bottom side of the drive roller and the driven roller abut against the outer side of the construction pipe.

[0008] Optionally, the ends of the first plate and the second plate away from the connection are respectively provided with arc-shaped snap-fit ​​grooves. Each arc-shaped snap-fit ​​groove has a slot. One end of the T-shaped clip is provided with a clip head that matches the shape of the arc-shaped snap-fit ​​groove. The clip head can slide into the arc-shaped snap-fit ​​groove along the arc-shaped inner wall and be accommodated in the arc-shaped snap-fit ​​groove. During the sliding process, the rod of the T-shaped clip enters the slot simultaneously, so that the T-shaped clip can rotate relative to the support roller frame in the slot.

[0009] Optionally, the slot is an open slot, and the width of the open slot is greater than the diameter of the T-shaped clamp rod.

[0010] Optionally, a guide hole is fixedly provided on the fixed connecting plate, and the T-shaped clip is slidably connected to the guide hole. Adjustment cylinder grooves are opened on both sides of the fixed connecting plate. The threaded adjustment cylinder is rotatably set inside the adjustment cylinder groove. A rubber support ring is provided between the threaded adjustment cylinder and the guide hole. One side of the rubber support ring is fixedly connected to the threaded adjustment cylinder and abuts against the outer side of the T-shaped clip.

[0011] Optionally, the support roller frame and connecting block are available in various sizes. The support roller frame with different sizes has different arc lengths and / or radial thicknesses, and the connecting block with different sizes has different lengths. The support roller frame and connecting block with the corresponding sizes are selected and combined.

[0012] Optionally, an assembly hole is provided in the middle of the fixed connection plate, through which the working head of the external working component passes and contacts the construction pipeline.

[0013] A method for using welding equipment for hydraulic construction pipelines, comprising the following steps: For drive ring connection, first select a certain number of support rollers and connecting blocks according to the outer diameter of the construction pipeline. When connecting, first rotate the two threaded adjusting cylinders on the fixed connecting plate counterclockwise to push the T-shaped clips inside the threaded adjusting cylinders outward. Then place the clip head on the T-shaped clip into the arc-shaped clip groove of the support roller frame and into the inside of the clip groove; Then rotate the threaded adjusting cylinder to change the distance between the support roller frame and the connecting block; Finally, connect the remaining support rollers and connecting blocks to the outer side of the construction pipe in sequence; For task preparation, fix multiple different functional components onto multiple fixed connection plates respectively; According to the process flow, multiple functional components work on the pipeline in sequence until the welding is completed.

[0014] Specifically, during the process of rotating the threaded adjusting cylinder to change the distance between the support roller frame and the connecting block, the two T-shaped clamps are synchronously driven to slide in opposite directions at the same speed by the threaded adjusting rings with opposite thread directions at both ends of the threaded adjusting cylinder. This ensures that the connecting block maintains its radial centerline relative to the position of the annular structure during the radial adjustment process, thereby ensuring that the annular structure always maintains the coaxiality of its geometric center with the axis of the construction pipeline before and after the diameter change.

[0015] Specifically, after the remaining support rollers and connecting blocks are sequentially connected to the outer side of the construction pipe, a fine-tuning and calibration step is also included: Rotate the threaded adjusting cylinders on each connecting block to adjust the radial distance between each support roller frame and the connecting block, so that the bottom sides of the drive roller and driven roller set on the support roller frame are evenly abutted against the outer side of the construction pipe.

[0016] Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention designs the drive mechanism as a ring structure composed of multiple support rollers and connecting blocks that are interlocked and rotated alternately. This structure forms a 360° surround around the construction pipeline. The fully enclosed ring structure of this invention evenly distributes the equipment's weight and dynamic loads during operation to the entire circumference of the pipeline, significantly suppressing structural sagging and reduced alignment accuracy caused by equipment cantilever or eccentric loading during the construction of large-diameter pipelines, fundamentally ensuring the coaxiality of functional components and the pipeline axis. Simultaneously, this structure can achieve stable circumferential movement without additional back supports or auxiliary support wheel systems. The connecting block integrates multiple functional components on its fixed connecting plate, and features a symmetrically distributed bidirectional threaded adjustment mechanism. Two T-shaped clamps engage with the same threaded adjusting cylinder via threaded adjusting rings with opposite thread directions, and the T-shaped clamps slide against the fixed connecting plate. This achieves high adaptability to changing pipe diameters: when the pipe diameter decreases, rotating the threaded adjusting cylinder causes the T-shaped clamps at both ends to contract inwards synchronously, uniformly reducing the inner diameter of the annular structure. This effectively prevents collisions between functional modules within confined spaces. Throughout the entire adjustment stroke, this design maintains a seamless, continuous 360° full enclosure. The closed-loop design ensures stable and balanced support for all functional components, fundamentally eliminating precision loss caused by structural breakage or deformation. Furthermore, the fully enclosed closed-loop structure provides uniform circumferential clamping force and balanced stress on the pipe wall, avoiding the risk of pipe wall deformation or component tilting that can occur with localized clamping. When the pipe diameter increases, reverse rotation extends the T-shaped clamps outwards, and the multi-point chain structure distributes the equipment's weight to the pipe surface, suppressing sagging deformation and ensuring that the drive roller, driven roller, and functional components remain aligned with the pipe axis. This solution not only solves the technical problems of existing integrated equipment being prone to collisions and having poor alignment accuracy when the pipe diameter changes, but also, by integrating surface treatment, welding, and inspection processes onto the same circumferential traveling device, avoids frequent equipment changes or re-clamping, significantly simplifying the construction process, reducing time costs, and ensuring welding and inspection quality. Attached Figure Description

[0017] Figure 1 A structural diagram of the drive mechanism provided in an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the effects of an embodiment of the present invention; Figure 3 A structural diagram of the support roller frame provided in an embodiment of the present invention; Figure 4 This is a structural diagram of a T-shaped card provided in an embodiment of the present invention; Figure 5 This is a structural diagram of a connecting block provided in an embodiment of the present invention; Figure 6This is a structural diagram of a fixed connection plate provided in an embodiment of the present invention; Figure 7 A structural diagram of the driven roller provided in an embodiment of the present invention; Figure 8 This is a structural diagram of the grinding mechanism provided in an embodiment of the present invention; Figure 9 This is a front view of the drive mechanism provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Construction pipeline; 2. Drive mechanism; 3. Support roller frame; 301. Drive roller; 3011. Through groove; 302. Driven roller; 303. Arc-shaped snap-fit ​​groove; 304. Snap-fit ​​groove; 4. Connecting block; 401. Fixed connecting plate; 4011. Adjusting cylinder rotating groove; 4012. Guide hole; 4013. Assembly hole; 402. T-type clamp; 4021. Clamp head; 4022. Threaded adjusting ring; 403. Threaded adjusting cylinder; 404. Rubber support ring; 405. Adjusting mechanism; 5. Grinding mechanism; 501. Grinding motor; 502. Grinding wheel; 503. Motor fixing bolt; 504. Motor fixing plate; 505. Adjustment groove; 6. Welding gun; 601. Welding gun fixing rod; 7. Fan; 701. Fan power supply; 8. Ultrasonic flaw detector. Detailed Implementation

[0019] The following detailed description of a specific embodiment of the present invention is provided in conjunction with the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] The present invention will be described below through several specific embodiments. To keep the following description of the embodiments clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present invention appears in more than one drawing, the component may be represented by the same reference numerals in each drawing.

[0022] Figure 1 This is a structural diagram of the drive mechanism provided in an embodiment of the present invention. Figure 2This is a schematic diagram illustrating the effect of an embodiment of the present invention. Figure 3 This is a structural diagram of the support roller frame provided in an embodiment of the present invention. Figure 4 This is a structural diagram of a T-shaped card provided in an embodiment of the present invention. Figure 5 This is a structural diagram of the connecting block provided in an embodiment of the present invention. Figure 6 This is a structural diagram of a fixed connection plate provided in an embodiment of the present invention. Figure 7 This is a structural diagram of the driven roller provided in an embodiment of the present invention. Figure 8 This is a structural diagram of the grinding mechanism provided in an embodiment of the present invention. Figure 9 This is a front view of the drive mechanism provided in an embodiment of the present invention.

[0023] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a welding device for hydraulic construction pipelines, including a construction pipeline 1 and a drive mechanism 2 disposed on the outer side of the construction pipeline 1. The drive mechanism 2 includes multiple support roller frames 3 and multiple connecting blocks 4. The support roller frames 3 and connecting blocks 4 are interlocked and rotated in a snap-fit ​​manner to form a ring structure. The ring structure is used to provide a stable running track for the moving parts in the device. The drive mechanism 2 is formed by the interlocking and rotating of the support roller frames 3 and connecting blocks 4 to form a closed-loop ring structure, thus forming a stable running track. This closed-loop ring structure is different from the semi-enclosed device that only covers part of the pipe circumference. It can form a 360° full enclosure around the pipeline, providing an integrated, high-rigidity, and stable running track for the moving parts in the device. More importantly, this fully enclosed structure effectively overcomes the sagging moment caused by the weight of semi-enclosed or cantilevered equipment when constructing large-diameter pipelines. By evenly distributing gravity throughout the circumference of the pipeline, it ensures the coaxiality of the equipment's central axis with that of the pipeline, thereby ensuring that the work heads for grinding, welding, and inspection can always be aligned with the pipeline surface in the optimal position, unaffected by changes in pipe diameter or equipment posture. When adapting to pipelines of different diameters, by tightening the threaded adjusting cylinders 403 on each connecting block 4, all driving blocks 3 and connecting blocks 4 move outward or inward in tandem, and the circumference of the entire annular structure increases or decreases accordingly, always maintaining a seamless, continuous 360° fully enclosed ring. This circumferential continuous adjustment mechanism ensures that, regardless of changes in pipe diameter, the connecting block 4, which supports functions such as grinding, welding, and testing, always fits tightly and evenly around the pipe. The modular design facilitates installation, disassembly, and maintenance, adapts to the construction needs of different pipe diameters, eliminates the need to replace a large number of parts, improves the equipment's versatility and applicability, and ensures the equipment's stability during rotation around the pipe, thereby improving the accuracy and quality of grinding, welding, and other operations.

[0024] One of the support roller frames 3 is fixedly equipped with a drive roller 301, which drives the drive mechanism 2. The other support roller frames 3 are rotatably equipped with driven rollers 302. The design of a single drive roller 301 and multiple driven rollers 302 ensures the power concentration of the overall mechanism moving along the construction pipeline 1, while avoiding the complex problem of synchronous control caused by multiple power sources, thus reducing system energy consumption and control difficulty. The connecting block 4 includes a fixed connecting plate 401, on which a grinding mechanism 5, a welding gun 6, a fan 7, and an ultrasonic flaw detector 8 are fixedly mounted. This equipment integrates the grinding mechanism 5, welding gun 6, fan 7, and ultrasonic flaw detector 8 into one unit, which can complete multiple processes such as grinding, welding, cleaning, and inspection of the pipeline in sequence on the same equipment, greatly simplifying the construction process, improving construction efficiency, and reducing construction time and labor costs. The fixed connecting plate 401 is equipped with an adjustment mechanism 405 for adjusting the inner diameter of the annular structure and the clamping force of the construction pipeline 1. The system includes symmetrically distributed threaded adjusting cylinders 403, both ends of which are threadedly connected to T-shaped clamps 402. The inner diameter of the annular structure can be flexibly adjusted through the cooperation of the threaded adjusting cylinders 403 and the T-shaped clamps 402 in the adjusting mechanism 405. The two T-shaped clamps 402 are provided with threaded adjusting rings 4022 with opposite thread directions at their closest ends. The threaded adjusting cylinders 403 use the characteristics of opposite threads to push the T-shaped clamps 402. The T-shaped clamps 402 are slidably connected to the fixed connecting plate 401. The connecting block 4 uses a combination of threaded adjusting cylinders 403 and T-shaped clamps 402 with opposite thread directions at both ends, which can achieve bidirectional synchronous pushing, accurately adjust the clamping force, ensure the fit between the annular structure and the outer wall of the construction pipeline 1, adapt to changes in the diameter of the construction pipeline 1 or uneven surface, and can quickly and conveniently adjust the inner diameter of the drive mechanism 2 to adapt to slight ellipticity, corrosion or uneven coating on the surface of the construction pipeline 1.

[0025] Therefore, based on modular tracks, the entire pipeline welding process is mechanized, integrated, and sequential. Its structural design takes into account both stability and adjustment flexibility, and its functional configuration covers key processes before and after welding. It is especially suitable for efficient on-site construction and quality control of large-diameter, long-distance pipelines in water conservancy projects. It adopts a track-type self-drive structure, which does not rely on external hoisting or large auxiliary equipment. It is suitable for complex construction environments such as fields, narrow passages, or high slopes commonly found in water conservancy projects. Through the cooperation of the threaded adjusting cylinder 403 and the T-type clamp 402, the inner diameter and clamping force of the ring structure can be flexibly adjusted, improving the scope of use and flexibility.

[0026] To facilitate the rotation of the drive mechanism 2 on the construction pipeline 1, such as Figure 2 and Figure 3As shown, a through groove 3011 is provided at the bottom of the support roller frame 3. The drive roller 301 and the driven roller 302 are arranged inside the through groove 3011. The bottom side of the drive roller 301 and the driven roller 302 abut against the outer side of the construction pipe 1 to form a multi-point contact support. When the drive mechanism 2 rotates around the construction pipe 1, it can effectively disperse the weight of the equipment, reduce the shaking and bumping of the equipment during operation, and make the equipment run more smoothly, thereby ensuring the accuracy of grinding, welding and other operations.

[0027] Moreover, it can adapt to a certain range of pipe diameter changes to a certain extent. As long as the outer diameter of the construction pipe 1 is within a reasonable range, the drive roller 301 and the driven roller 302 can ensure effective contact with the outer side of the construction pipe 1 by their own elastic deformation or adjustment, thereby realizing the driving and operation of pipes with different diameters and improving the versatility of the equipment.

[0028] To improve the stability of the movement of drive mechanism 2, such as Figure 3 and Figure 4 As shown, the support roller frame 3 is provided with symmetrically distributed arc-shaped locking grooves 303, and each arc-shaped locking groove 303 is provided with a locking groove 304. One end of the T-shaped locking piece 402 is provided with a locking head 4021 corresponding to the arc-shaped locking groove 303. The locking head 4021 is rotatably set inside the arc-shaped locking groove 303, and the T-shaped locking piece 402 is rotatably set inside the locking groove 304. When it is necessary to adjust the distance between the support roller frame 3 and the connecting block 4 to adapt to construction pipes 1 of different diameters, this sliding connection method can ensure the smoothness of the adjustment process. The operator can easily rotate the threaded adjusting cylinder 403 to adjust the distance, ensuring the stability of the overall structure of the drive mechanism 2. It is not easy for the equipment to loosen or separate during operation. The support roller frame 3 and the connecting block 4 are connected in sequence to form a ring-shaped drive mechanism. The various components are mutually constrained to form an organic whole, which can better withstand various forces generated during equipment operation, such as driving force and friction, thus improving the overall reliability and stability of the equipment.

[0029] Meanwhile, to prevent the fixed connecting plate 401 from sliding on the T-shaped clip 402, in this embodiment, as follows: Figure 4 and Figure 6As shown, a guide hole 4012 is fixedly provided on the fixed connecting plate 401. The T-shaped clamp 402 is slidably connected to the guide hole 4012. Adjusting cylinder grooves 4011 are provided on both sides of the fixed connecting plate 401. The threaded adjusting cylinder 403 is rotatably disposed inside the adjusting cylinder groove 4011. Utilizing the threaded transmission principle, the sliding distance of the T-shaped clamp 402 in the guide hole 4012 can be precisely controlled, thereby achieving precise adjustment of the distance between the support roller frame 3 and the connecting block 4. This helps to ensure that the drive mechanism 2 can fit tightly against the construction pipe 1 with different outer diameters, improving the adaptability and operational accuracy of the equipment. A rubber support ring 404 is provided between the threaded adjusting cylinder 403 and the guide hole 4012. One side of the rubber support ring 404 is fixedly connected to the threaded adjusting cylinder 403 and abuts against the outer side of the T-shaped clamp 402. The setting of the rubber support ring 404 provides support and buffer for the threaded adjusting cylinder 403.

[0030] On the one hand, it can ensure that the threaded adjusting cylinder 403 rotates stably in the adjusting cylinder groove 4011, reducing the shaking during the rotation process.

[0031] On the other hand, the rubber support ring 404 abuts against the outer side of the T-shaped clip 402, which can prevent the fixed connecting plate 401 from shifting during the sliding process of the T-shaped clip 402, further improving the accuracy and stability of the adjustment.

[0032] Specifically, in order to achieve the above effect, therefore, as Figure 1 , Figure 6 as well as Figure 9 As shown, the fixed connecting plate 401 has an assembly hole 4013 in the middle. The grinding mechanism 5, welding gun 6, fan 7 and ultrasonic flaw detector 8 are all set on the assembly hole 4013. This makes full use of the space resources of the fixed connecting plate 401, avoids the problem of the equipment being too large due to the dispersed arrangement of each mechanism, and makes the structure of the entire welding equipment more compact. This facilitates the installation, transportation and use of the equipment in relatively narrow construction environments. The unified assembly hole 4013 design eliminates the need to set up a complex installation structure and space for each mechanism, simplifies the overall structure of the equipment, reduces manufacturing costs, and also reduces potential failure points caused by too many parts.

[0033] Polishing: such as Figure 8 As shown, the grinding mechanism 5 includes a grinding motor 501, and a grinding wheel 502 is provided at the output end of the grinding motor 501. The grinding wheel 502 abuts against the outer surface of the construction pipe 1. The grinding wheel 502 can fully contact the surface of the construction pipe 1 and generate friction, thereby effectively removing impurities such as burrs, rust, and oxide layers from the surface of the construction pipe 1, so that the surface of the construction pipe 1 reaches the required flatness and roughness, providing good surface conditions for subsequent welding operations and helping to improve welding quality.

[0034] A motor fixing bolt 503 is fixedly installed on the outer side of the grinding motor 501. The motor fixing bolt 503 is fixed on the fixed connecting plate 401 through the motor fixing plate 504. The motor fixing plate 504 has an adjustment groove 505. The motor fixing bolt 503 passes through the adjustment groove 505 and is connected to a nut. The motor fixing bolt 503 is fixed on the motor fixing plate 504 through the nut. The adjustment groove 505 on the motor fixing plate 504 provides convenience for adjusting the position of the grinding motor 501. During the installation or commissioning of the equipment, the operator can loosen the nut and move the motor fixing bolt 503 along the adjustment groove 505 according to the actual outer diameter of the construction pipeline 1 and the grinding requirements, thereby adjusting the position of the grinding motor 501 and the grinding wheel 502 to achieve the best contact state with the pipeline surface. Then, the nut is tightened for fixation, which improves the efficiency and accuracy of installation and commissioning.

[0035] Welding: In this embodiment, as Figure 4 As shown, the welding gun 6 is fixedly mounted on the fixed connecting plate 401 by the welding gun fixing rod 601, which can ensure that the welding gun 6 maintains a stable position during equipment operation. One end of the welding gun 6 is close to the construction pipeline 1, and the other end of the welding gun 6 is connected to the external air source through the air pipe. When rotating around the construction pipeline 1 for welding operations, the welding gun 6 will not easily shake or shift, so that the welding gun can accurately point to the welding part, ensuring the accuracy of the welding trajectory and improving the welding quality.

[0036] Cleanup: In this embodiment, as Figure 2 As shown, the fan 7 is connected to the fan power supply 701 via a wire. The fan power supply 701 is fixedly mounted on the fixed connection plate 401. The wire connection reduces voltage drop and interference during power transmission, ensuring that the fan 7 receives a stable and sufficient power supply. This allows the fan to maintain a stable speed and airflow during operation, thereby effectively cleaning the surface of the polished construction pipe 1, improving the cleaning effect, and providing a guarantee for subsequent welding.

[0037] Detection: In this embodiment, such as Figure 1 As shown, the ultrasonic flaw detector 8 is wirelessly connected to a mobile terminal. The wireless connection enables rapid data transmission between the ultrasonic flaw detector 8 and the mobile terminal. During the inspection process, once the ultrasonic flaw detector 8 acquires the inspection data of the construction pipeline 1, it can immediately send it to the mobile terminal. The operator can view the inspection results in real time, promptly detect defects in the construction pipeline 1, such as cracks and pores, and take corresponding measures to prevent the defects from expanding further, thus ensuring the quality and safety of the water conservancy construction pipeline 1.

[0038] Therefore, by integrating the related mechanisms for grinding, welding, cleaning, and inspection into the assembly hole 4013, the equipment can complete multiple processes sequentially or simultaneously as needed while rotating around the construction pipeline 1. This achieves organic integration of functions, improves construction efficiency, and meets the comprehensive needs of hydraulic construction pipeline welding operations. For example, the pipeline surface treated by the grinding mechanism 5 can be immediately welded by the welding gun 6. After welding, the fan 7 can clean the welded area in a timely manner, and finally, the ultrasonic flaw detector 8 performs inspection. The processes are closely connected, reducing time wastage in intermediate links and improving the overall operating efficiency of the equipment.

[0039] Optionally, the support roller frame 3 and the connecting block 4 have various sizes and specifications. The support roller frame 3 of different sizes and specifications has different arc lengths and / or radial thicknesses, and the connecting block 4 of different sizes and specifications has different lengths. The support roller frame 3 and the connecting block 4 of the corresponding sizes and specifications are selected for combination.

[0040] As an optional configuration, the support roller frame 3 and connecting block 4 include at least three size series: minor diameter, intermediate diameter, and major diameter. Among them: The small diameter specification is suitable for construction pipes 1 with an outer diameter of 200mm-500mm. Under this specification, the support roller frame 3 has a shorter arc length and a smaller radial thickness, and the connecting block 4 has a shorter length, so that the ring structure has a larger number of modules in the closed state, thereby enhancing the fitting accuracy to the surface of the small diameter pipe. The medium diameter specification is suitable for construction pipes 1 with an outer diameter of 500mm-1000mm. The support roller frame 3 of this specification has a moderate arc length and radial thickness, and the connecting block 4 has a moderate length, which ensures structural rigidity while taking into account the ease of assembly. The large-diameter specification is suitable for construction pipes 1 with an outer diameter of 1000mm-2000mm. The support roller frame 3 of this specification has a longer arc length and a larger radial thickness to enhance the overall rigidity of the ring structure and its resistance to sagging deformation. The connecting block 4 has a longer length, which can appropriately reduce the total number of modules and simplify the assembly process during the construction of large-diameter pipes.

[0041] In actual construction, operators first determine the required specification series based on the outer diameter of the construction pipeline 1, and then select the required number of modules from the support roller frame 3 and connecting block 4 of the corresponding specification series. If the outer diameter of the construction pipeline 1 is within the boundary range of two specification series, operators can flexibly choose according to the on-site working conditions. When prioritizing operational accuracy, a smaller specification series can be selected to obtain more modules and a finer fit; when prioritizing assembly efficiency, a larger specification series can be selected to reduce the number of modules and assembly time.

[0042] Furthermore, within the same specification series, the inner diameter of the annular structure can still be finely adjusted within a certain range by rotating the threaded adjusting cylinder 403 to compensate for local unevenness, ellipticity deviation, or coating thickness differences on the surface of the construction pipeline 1. This dual adaptation mechanism of "specification selection + fine-tuning compensation" enables this equipment to flexibly cope with the complex and ever-changing pipeline conditions at water conservancy construction sites.

[0043] It is understood that the above-mentioned pipe diameter range and number of specifications are merely illustrative examples. Actual products may be designed with more or fewer specification series according to market demand and engineering application scenarios. The applicable pipe diameter range of each specification series may also be adjusted as needed, all of which do not depart from the protection scope of this invention.

[0044] The support roller frame 3 and the connecting block 4 are designed as modular components with various sizes and specifications. The support roller frame 3 of different sizes and specifications has different arc lengths and / or radial thicknesses, and the connecting block 4 of different sizes and specifications has different lengths. By selecting and combining the support roller frame 3 and connecting block 4 of the corresponding sizes and specifications, the adaptability of the equipment to the outer diameter of the construction pipeline 1 can be greatly expanded. When the outer diameter of the construction pipeline 1 exceeds the expansion and contraction adjustment limit of a single-specification module, it can be quickly adapted simply by replacing the module with one of the corresponding size and specifications, without the need to purchase or design new equipment, significantly reducing the equipment investment cost for the construction unit. At the same time, matching modules of corresponding specifications to different pipe diameters ensures that the ring structure maintains optimal mechanical performance under all pipe diameters—small-diameter pipes use small-specification modules to reduce the additional load on the pipe due to their own weight, while large-diameter pipes use large-specification modules to enhance overall rigidity and resistance to sagging deformation. In addition, the individual weight of the multi-specification modules is controlled within the range that can be manually transported, and operators can complete on-site assembly without the aid of hoisting equipment, greatly improving the applicability and deployment flexibility of the equipment in complex construction environments such as the field, slopes, and trenches. This technical solution complements the single-module expansion and contraction function realized by the threaded adjusting cylinder 403. Fine adjustments within the same pipe diameter class can be achieved by rotating the threaded adjusting cylinder 403, while large-scale changes across different pipe diameter classes are adapted by changing the module specifications. The two work together to cover the pipe diameter change requirements under all working conditions that may be encountered in water conservancy construction.

[0045] like Figure 1 - Figure 9As shown, the method of using the welding equipment for water conservancy construction pipelines provided in this embodiment includes the following steps: drive ring connection. First, select a certain number of support roller frames 3 and connecting blocks 4 according to the outer diameter of the construction pipeline 1. During connection, first rotate the two threaded adjusting cylinders 403 on the fixed connecting plate 401 counterclockwise to push out the T-shaped clamps 402 inside the threaded adjusting cylinders 403; then place the clamp head 4021 on the T-shaped clamp 402 into the arc-shaped clamping groove 303 and the groove 304 inside the support roller frame 3; rotate the threaded adjusting cylinder 403 clockwise to change the distance between the support roller frame 3 and the connecting blocks 4; finally, connect the remaining support roller frames 3 and connecting blocks 4 to the outer side of the construction pipeline 1 in sequence. The assembly method is flexible and can meet the construction needs of pipelines of various specifications. Operators can quickly adjust according to the actual situation, improving the efficiency of the equipment. Usability and operational flexibility; In preparation for operation, the grinding mechanism 5, welding gun 6, fan 7, and ultrasonic flaw detector 8 are fixed on the fixed connecting plate 401; For grinding, the drive roller 301 on the support roller frame 3 is started, causing the drive mechanism 2 to rotate around the construction pipeline 1. Then, the grinding motor 501 is started, and the outer surface of the construction pipeline 1 is ground by the grinding wheel 502; For welding, the welding gun 6 is connected to the external air source, and the outer surface of the construction pipeline 1 is welded by the welding gun 6. After fixing the grinding mechanism 5, welding gun 6, fan 7, and ultrasonic flaw detector 8 on the fixed connecting plate 401 during the preparation stage, each functional mechanism can be started and operated independently in subsequent steps such as grinding, welding, cleaning, and inspection. Operators can control the operation of each mechanism in a targeted manner according to the construction progress and actual needs, making the operation more flexible and convenient.

[0046] Specifically, during the process of rotating the threaded adjusting cylinder 403 to change the distance between the support roller frame 3 and the connecting block 4, the two T-shaped clamps 402 are synchronously driven to slide in opposite directions at the same speed by the threaded adjusting rings 4022 with opposite thread directions at both ends of the threaded adjusting cylinder 403, so that the connecting block 4 maintains its radial centerline relative to the position of the annular structure during the radial adjustment process, thereby ensuring that the annular structure always maintains the coaxiality of its geometric center with the axis of the construction pipeline 1 before and after the diameter change.

[0047] Specifically, after connecting the remaining support roller frame 3 and connecting block 4 to the outer side of the construction pipe 1 in sequence, a fine-tuning calibration step is also included: rotating the threaded adjusting cylinder 403 on each connecting block 4 respectively, and adjusting the radial distance between each support roller frame 3 and connecting block 4 so that the bottom side of the drive roller 301 and driven roller 302 set on the support roller frame 3 evenly abuts against the outer side of the construction pipe 1.

[0048] The above inventions are merely a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A welding device for hydraulic construction pipelines, comprising a drive mechanism disposed on the outer side of the construction pipeline, characterized in that, The driving mechanism includes multiple support roller frames and multiple connecting blocks. The support roller frames and the connecting blocks are interlocked by a snap-fit ​​rotation method, forming a closed-loop ring structure. One of the support roller frames is fixedly equipped with a drive roller for driving the drive mechanism. The other support roller frames are rotatably equipped with driven rollers. The connecting block includes a fixed connecting plate, on which functional components are fixedly installed. The fixed connecting plate is provided with an adjustment mechanism for adjusting the inner diameter of the annular structure and the clamping force of the construction pipeline. The adjustment mechanism includes symmetrically distributed threaded adjusting cylinders. Both ends of the threaded adjusting cylinders are threadedly connected to T-shaped clamps. The inner diameter of the annular structure can be flexibly adjusted by the cooperation of the threaded adjusting cylinders and the T-shaped clamps. The two T-shaped clamps are provided with threaded adjusting rings with opposite thread directions at their closest ends. The T-shaped clamps are slidably connected to the fixed connecting plate.

2. The welding equipment for water conservancy construction pipelines as described in claim 1, characterized in that, The support roller frame is a right-angled frame, including a first plate and a second plate that are perpendicular to each other. A through groove is provided at the connection between the first plate and the second plate. The drive roller and the driven roller are disposed inside the through groove. The bottom side of the drive roller and the driven roller abut against the outer side of the construction pipe.

3. The welding equipment for water conservancy construction pipelines as described in claim 2, characterized in that, The ends of the first plate and the second plate away from the connection are respectively provided with arc-shaped snap-fit ​​grooves. Each arc-shaped snap-fit ​​groove has a slot. One end of the T-shaped clip is provided with a clip head that matches the shape of the arc-shaped snap-fit ​​groove. The clip head can slide into the arc-shaped snap-fit ​​groove along the arc-shaped inner wall and be accommodated in the arc-shaped snap-fit ​​groove. During the sliding process, the rod of the T-shaped clip enters the slot simultaneously, so that the T-shaped clip can rotate relative to the support roller frame in the slot.

4. The welding equipment for water conservancy construction pipelines as described in claim 3, characterized in that, The slot is an open slot, and the width of the open slot is greater than the diameter of the T-shaped clamp rod.

5. The welding equipment for water conservancy construction pipelines as described in claim 1, characterized in that, A guide hole is fixedly provided on the fixed connecting plate, and the T-shaped clip is slidably connected to the guide hole. Adjustment cylinder slots are provided on both sides of the fixed connecting plate. The threaded adjustment cylinder is rotatably disposed inside the adjustment cylinder slot. A rubber support ring is provided between the threaded adjustment cylinder and the guide hole. One side of the rubber support ring is fixedly connected to the threaded adjustment cylinder and abuts against the outer side of the T-shaped clip.

6. The welding equipment for water conservancy construction pipelines as described in claim 1, characterized in that, The support roller frame and the connecting block have various sizes and specifications. The support roller frame with different sizes and specifications has different arc lengths and / or radial thicknesses, and the connecting block with different sizes and specifications has different lengths. The support roller frame and the connecting block with the corresponding sizes and specifications are selected for combination.

7. The welding equipment for water conservancy construction pipelines as described in claim 1, characterized in that, An assembly hole is provided in the middle of the fixed connection plate, and the working head of the external working component passes through the assembly hole and contacts the construction pipeline.

8. A method for using welding equipment for hydraulic construction pipelines, characterized in that, The welding equipment for water conservancy construction pipelines according to claim 1 was used. Includes the following steps: For drive ring connection, first select a certain number of support rollers and connecting blocks according to the outer diameter of the construction pipeline. When connecting, first rotate the two threaded adjusting cylinders on the fixed connecting plate counterclockwise to push the T-shaped clips inside the threaded adjusting cylinders outward. Then place the clip head on the T-shaped clip into the arc-shaped clip groove of the support roller frame and into the inside of the clip groove; Then rotate the threaded adjusting cylinder to change the distance between the support roller frame and the connecting block; Finally, connect the remaining support rollers and connecting blocks to the outer side of the construction pipe in sequence; For task preparation, fix multiple different functional components onto multiple fixed connection plates respectively; According to the process flow, multiple functional components work on the pipeline in sequence until the welding is completed.

9. The method of using the welding equipment for water conservancy construction pipelines according to claim 8, characterized in that, During the process of rotating the threaded adjusting cylinder to change the distance between the support roller frame and the connecting block, the two T-shaped clamps are synchronously driven to slide in opposite directions at the same speed by the threaded adjusting rings with opposite thread directions at both ends of the threaded adjusting cylinder. This ensures that the connecting block remains symmetrical with respect to the radial center line of the annular structure during the radial adjustment process, thereby ensuring that the annular structure maintains the coaxiality of its geometric center with the axis of the construction pipeline before and after the diameter change.

10. The method of using the welding equipment for water conservancy construction pipelines according to claim 8, characterized in that, After the remaining support rollers and connecting blocks are sequentially connected to the outer side of the construction pipe, a fine-tuning and calibration step is also included: Rotate the threaded adjusting cylinders on each connecting block to adjust the radial distance between each support roller frame and the connecting block, so that the bottom sides of the drive roller and driven roller set on the support roller frame are evenly abutted against the outer side of the construction pipe.

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