Large-diameter tower drum no-backing welding mechanism

Abstract

This utility model relates to the field of tower welding, specifically to a non-root-cleaning welding mechanism for large-diameter towers. It includes: a ground rail 1 and two tower bodies. At least two electrically driven roller frames are mounted on the bottom of each tower body. A cross-shaped truss manipulator is mounted on one side of the ground rail 1, with a welding robot mounted on one end. A second ground rail is located on the side of the ground rail 1 away from the cross-shaped truss manipulator, and a beveling device is mounted on the second ground rail. A root-cleaning mechanism is mounted on the bottom end of the cross-shaped truss manipulator. This utility model adjusts the distance between the grinding-type root-cleaning component and the tower body using a telescopic rod assembly 1, allowing the grinding-type root-cleaning component to accurately contact the weld bead at the root of the tower body and perform root-cleaning operations. A drive motor rotates the drive wheel, causing friction to move the grinding belt, thus grinding the weld bead at the weld root of the tower body 2 and removing the defect layer of the weld bead.

Description

Technical Field

[0001] This utility model relates to the field of towers, and in particular to a non-root cleaning welding mechanism for large-diameter towers. Background Technology

[0002] Wind turbine towers are typically made of low-carbon alloy steel plates rolled and welded. They are hollow conical or cylindrical structural components. Moreover, wind turbine towers are assembled from multiple segments. During the assembly process, parameters such as the diameter, taper, and flange flatness of each segment must be strictly matched to ensure the stability and safety of the overall structure.

[0003] During the manufacturing process of wind turbine towers, each section requires longitudinal welding to form a closed structure. Specifically, this involves assembling multiple sections with qualified longitudinal welds in a predetermined sequence, followed by circumferential welding using submerged arc welding. After welding, RT / UT flaw detection is performed to comprehensively ensure the welding quality of the circumferential seam. To guarantee the structural strength of the tower sections during welding, the defect layer of the root weld must be thoroughly removed to ensure the integrity of the weld. If root defects are not removed in time, the deposited metal during outer welding will not be able to fully fuse with the base material, resulting in interlayer incomplete fusion or hidden cracks. This will significantly reduce the fatigue resistance and fracture resistance of the weld. Therefore, it is essential to ensure that the weld is free of root defects after welding.

[0004] However, in practice, the inventors discovered a problem: after the tower section welding is completed, it is usually necessary to use carbon arc gouging, grinding with a grinding wheel or machining to remove root defects. This step is not only cumbersome, but also requires interrupting the welding of the remaining tower sections, thus reducing the overall welding efficiency. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a large-diameter tower tube welding mechanism without root cleaning, which improves the overall welding quality and welding efficiency of the tower tube, while ensuring that the weld seam on the tower tube is in a state without root cleaning defects.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a large-diameter tower tube non-root cleaning welding mechanism, including: a ground rail one and two cylinders, the bottom of each cylinder is provided with no less than two electric walking roller frames, the electric walking roller frames are all installed on the ground rail one, a cross truss manipulator is provided on one side of the ground rail one, a welding robot is installed at one end of the cross truss manipulator, a ground rail two is provided on the side of the ground rail one away from the cross truss manipulator, a beveling cutting device is installed on the ground rail two, and a root cleaning mechanism is installed at one bottom end of the cross truss manipulator;

[0007] The root cleaning mechanism includes an L-shaped mounting plate and a grinding-type root cleaning component, and also includes a telescopic rod assembly that drives the grinding-type root cleaning component to move towards the cylinder.

[0008] By adopting the above technical solution, the electric traveling roller frame is installed on the ground rail one, which can carry the cylinder and drive the cylinder to move linearly along the ground rail one. By controlling the movement of the electric traveling roller frame, the position of the cylinder can be adjusted, which facilitates the operation of the cylinder at different positions in subsequent processes. The cross truss robot has the ability to move in the horizontal and vertical directions, and drives the welding robot to perform precise positioning and movement within a large range to perform welding operations at different positions on the cylinder surface. The beveling cutting device moves along the ground rail two and performs beveling cutting on the cylinder to ensure that the deposited metal can fully fill the weld during welding. The grinding-type root cleaning component removes the defect layer, such as oxygen, from the weld root of the cylinder by grinding. The grinding and cleaning component removes defects such as scale, slag inclusions, and porosity from the weld root, ensuring a smooth and clean surface. This guarantees that the molten metal will fully fuse with the base material during subsequent external welding. The telescopic rod assembly precisely adjusts the distance between the grinding and cleaning component and the cylinder by controlling the extension and retraction of the telescopic rod. This allows the grinding and cleaning component to accurately contact the weld root of the cylinder and perform the cleaning operation. Furthermore, the position of the cleaning component can be flexibly adjusted for cleaning operations on different cylinder sizes or at different locations. The grinding and cleaning component removes defects such as scale, slag inclusions, and porosity from the weld root of the cylinder through grinding, resulting in a smooth and clean weld root that ensures that the molten metal will fully fuse with the base material during subsequent external welding.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the grinding-type root cleaning assembly includes an L-shaped bracket and a rotating plate connected to one end thereto. The rotating plate is rotatably connected to an L-shaped mounting plate. An inclined plate is connected to the end of the L-shaped bracket away from the rotating plate. A drive cylinder is connected to the inclined plate. A U-shaped frame is connected to one end of the drive cylinder. A grinding wheel is rotatably connected to the inner side of the U-shaped frame. A tensioning wheel is also installed on the L-shaped bracket. A drive motor is connected to the top of the L-shaped bracket. A drive wheel is connected to the output end of the drive motor. The assembly also includes a grinding belt. The drive wheel, tensioning wheel, and grinding wheel are all connected by the grinding belt.

[0010] By adopting the above technical solution, the tilt angle of the inclined plate helps to optimize the force direction of the drive cylinder, enabling the drive cylinder to more effectively push the U-shaped frame and the grinding wheel, achieving precise adjustment of the grinding wheel's position. Furthermore, the grinding belt connects the drive wheel, tension wheel, and grinding wheel, forming a closed-loop transmission system that transmits the power of the drive motor from the drive wheel to the grinding wheel, allowing the grinding wheel to rotate and grind the weld at the root of the cylinder. This ensures the effective removal of various types of defects while guaranteeing the surface quality after grinding. In addition, by adjusting the position of the tension wheel to tension the grinding belt, appropriate tension is maintained between the drive wheel, tension wheel, and grinding wheel, effectively preventing slippage or loosening of the grinding belt during operation.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the telescopic rod assembly includes an electric push rod and a hinge seat connected to an L-shaped bracket. A hinge joint is rotatably connected to the hinge seat, and the hinge joint is connected to the extended end of the electric push rod. The assembly also includes a second hinge seat connected to an L-shaped mounting plate, and the second hinge seat is connected to the electric push rod via a pin.

[0012] By adopting the above technical solution, the electric push rod can adjust the movement of the grinding and cleaning component by extending and retracting its length, and accurately move the grinding and cleaning component to the designated position.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the beveling device includes a movable frame and bearing seats connected to its top two sides, a rotating rod is connected between the bearing seats, a beveling component is connected to the rotating rod, and a telescopic rod assembly two for driving the beveling component to move towards the cylinder. Telescopic auxiliary support assemblies are connected to both sides of the beveling component, and a dust collection assembly is connected to the top of the beveling component. The dust collection assembly includes at least two brackets, and clamps are connected to the top of the brackets. A flexible dust collection tube is connected inside the clamps, and a dust collection hood is connected to one end of the flexible dust collection tube.

[0014] By adopting the above technical solution, the mobile frame provides a stable installation platform for other components, and the bearing seat provides precise installation and support for the rotating rod. The telescopic rod assembly drives the bevel cutting assembly towards the cylinder, and in conjunction with the rotating rod, precisely adjusts the distance between the bevel cutting assembly and the cylinder, ensuring a suitable distance between the bevel cutting assembly and the cylinder surface. It also allows for rapid adjustment of the cutting position according to different cylinder specifications and cutting requirements, avoiding errors and inaccuracies from manual adjustments. At this time, telescopic auxiliary support assemblies are connected to both sides of the bevel cutting assembly, providing additional support and stability during the cutting process. When the cutting assembly is performing cutting operations, the telescopic auxiliary support assemblies can automatically adjust their length according to the cutting position and the cylinder curvature, keeping the cutting assembly stable and reducing vibration and shaking during the cutting process. During bevel cutting, the dust collection assembly collects and removes dust and debris in a timely manner, maintaining a clean working environment and air quality. The flexible dust collection hose has a certain degree of flexibility and bending performance, allowing for flexible adjustment according to the layout of the dust collection assembly and changes in the cutting position, facilitating accurate alignment of the dust hood with the cutting area.

[0015] In a preferred embodiment, the present invention can be further configured as follows: the beveling assembly includes symmetrically arranged T-shaped supports, a protective cover is connected between the T-shaped supports, a cutting tool is rotatably connected inside the protective cover, a servo motor is mounted on the outer side of one of the T-shaped supports, the output shaft of the servo motor is connected to the cutting tool, the teeth of the cutting tool are located outside the protective cover, an elastic suction tube is connected to the bottom end of the protective cover, one end of the elastic suction tube is connected to an external vacuum cleaner, and a connecting rod is provided between the ends of the T-shaped supports away from the protective cover.

[0016] By adopting the above technical solution, the T-shaped support serves as the basic support structure for the bevel cutting assembly, arranged symmetrically. The T-shaped support provides a stable mounting platform for the protective cover, cutting tool, servo motor, and other components, ensuring the stability and rigidity of the entire assembly during cutting. The protective cover protects the cutting tool and prevents sparks and debris from flying during the cutting process. The protective cover partially encloses the cutting tool, forming a relatively enclosed space to prevent hazardous substances generated during cutting from harming the surrounding environment and operators. The servo motor drives the cutting tool to rotate at high speed, using its teeth to cut the cylindrical material, thereby forming the required bevel shape. Furthermore, during the cutting process, a flexible suction tube, in conjunction with an external vacuum cleaner, removes smoke and debris generated inside the protective cover, keeping the cutting area clean.

[0017] In a preferred embodiment, the present invention can be further configured as follows: the telescopic auxiliary support assembly includes a side plate and a mounting plate connected to the side plate. A sleeve is connected to the mounting plate, a smooth rod is slidably connected inside the sleeve, a spring is provided inside the sleeve, one end of the spring is connected to one end of the smooth rod, one end of the smooth rod is connected to a U-shaped frame II, and the other end is symmetrically connected to a limiting block. Limiting grooves are respectively opened on both sides of the sleeve, and the limiting blocks are slidably connected in the limiting grooves. A guide wheel is rotatably connected to the inner side of the U-shaped frame II, and a guide rail is also connected to the side plate. A slider is slidably connected to the guide rail, and the slider is connected to the U-shaped frame II.

[0018] By adopting the above technical solution, the sleeve restricts the movement direction of the guide rod, allowing it to slide only along the axial direction of the sleeve. Under the action of the spring, the guide rod can slide freely within the sleeve. Through its own telescopic movement, it drives the U-shaped frame and guide wheel to move, thereby achieving dynamic contact and support between the guide wheel and the surface of the cylinder. This ensures that the cutting component and the surface of the cylinder always maintain a suitable distance and posture. At this time, the guide wheel contacts the surface of the cylinder, allowing the cutting component to move smoothly along the axial direction of the cylinder while maintaining a suitable distance from the surface of the cylinder. Meanwhile, the limiting block slides within the limiting groove to limit the sliding range of the guide rod within the sleeve, preventing the guide rod from sliding out of the sleeve and ensuring the safety and reliability of the guide rod's sliding.

[0019] In a preferred embodiment, the present invention can be further configured as follows: the telescopic rod assembly 2 includes an electric push rod 2 and a hinge sleeve connected to one end thereto; the other end of the electric push rod 2 is connected to a hinge seat 3 via a pin; the hinge seat 3 is mounted on a movable frame; and the hinge sleeve is connected to a connecting rod.

[0020] By adopting the above technical solution, the electric push rod 2 adjusts the cutting position through its own telescopic movement, and the hinge sleeve is hinged to the connecting rod, so that the electric push rod 2 and the connecting rod can form a flexible rotating joint, allowing the connecting rod to swing freely within a certain angle range.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects of the large-diameter tower tube non-root cleaning welding mechanism:

[0022] 1. Adjust the distance between the grinding and cleaning component and the cylinder body by using the telescopic rod assembly to ensure that the grinding and cleaning component accurately contacts the weld at the root of the cylinder body and performs the cleaning operation. The drive motor drives the drive wheel to rotate, so that the friction drives the grinding belt to move, thereby grinding the weld at the root of the cylinder body 2 and removing the defect layer of the weld.

[0023] 2. The bevel cutting assembly is driven to move towards the cylinder by the telescopic rod assembly, and the distance between the bevel cutting assembly and the cylinder is precisely adjusted in conjunction with the rotating rod to ensure that the bevel cutting assembly maintains a suitable distance from the cylinder surface. The cutting position can be quickly adjusted according to different cylinder specifications and cutting requirements, avoiding errors and inaccuracies caused by manual adjustment, thereby improving the subsequent welding accuracy and reducing root defects in the weld. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the root clearing mechanism of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the grinding-type root cleaning component of this utility model;

[0028] Figure 4 This is a schematic diagram of the beveling cutting device of this utility model;

[0029] Figure 5 This is a schematic diagram of the bevel cutting assembly of this utility model;

[0030] Figure 6 This is a schematic diagram of the telescopic auxiliary support component of this utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the sleeve of this utility model.

[0032] In the diagram: 1. Ground rail one; 2. Cylinder body; 3. Electric walking roller frame; 4. Cross truss robot; 5. Welding robot; 6. Ground rail two; 70. Bevel cutting device; 80. Root cleaning mechanism;

[0033] 71. Mobile frame; 72. Bearing housing; 73. Rotating rod; 74. Bevel cutting assembly; 75. Telescopic rod assembly two; 76. Telescopic auxiliary support assembly; 77. Dust collection assembly;

[0034] 81. L-shaped mounting plate; 82. Grinding and cleaning root assembly; 83. Telescopic pole assembly one;

[0035] 741. T-shaped support; 742. Protective cover; 743. Cutting tool; 744. Servo motor; 745. Flexible suction hose; 746. Connecting rod;

[0036] 751. Electric push rod II; 752. Hinge sleeve; 753. Hinge seat III;

[0037] 761. Side plate; 762. Mounting plate; 763. Sleeve; 764. Smooth rod; 765. U-shaped frame II; 766. Limiting block; 767. Limiting groove; 768. Guide wheel; 769. Guide rail; 76a. Slider; 76b. Spring;

[0038] 771. Bracket; 772. Clamp; 773. Flexible vacuum hose; 774. Vacuum hood;

[0039] 821. L-shaped bracket; 822. Rotating plate; 823. Inclined plate; 824. Drive cylinder; 825. U-shaped frame one; 826. Grinding wheel; 827. Tensioning wheel; 828. Drive motor; 829. Drive wheel; 82a. Grinding belt; 831. Electric push rod one; 832. Hinge seat one; 833. Hinge joint one; 834. Hinge seat two. Detailed Implementation

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0041] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0042] Reference Figure 1-7This utility model discloses a large-diameter tower welding mechanism without root cleaning, comprising: a ground rail 1 and two cylinders 2. At least two electric traveling roller frames 3 are respectively provided at the bottom of each cylinder 2. The electric traveling roller frames 3 are all mounted on the ground rail 1. A cross-truss manipulator 4 is provided on one side of the ground rail 1, and a welding robot 5 is mounted on one end of the cross-truss manipulator 4. The key feature is that a ground rail 2 6 is provided on the side of the ground rail 1 away from the cross-truss manipulator 4. A beveling cutting device 70 is mounted on the ground rail 2 6. A root cleaning mechanism 80 is mounted on one bottom end of the cross-truss manipulator 4. The root cleaning mechanism 80 includes an L-shaped mounting plate 81 and a grinding-type root cleaning component 82. It also includes a telescopic rod assembly 83 that drives the grinding-type root cleaning component 82 to move towards the cylinder 2. The telescopic rod assembly 83 includes an electric push rod 831 and a hinge seat 832 connected to an L-shaped bracket 821. A hinge joint 833 is rotatably connected to the hinge seat 832. The connector 833 and the extended end of the electric push rod 831 are connected. It also includes a hinge seat 834 connected to the L-shaped mounting plate 81. The hinge seat 834 is connected to the electric push rod 831 via a pin. The grinding-type root cleaning assembly 82 includes an L-shaped bracket 821 and a rotating plate 822 connected to one end thereto. The rotating plate 822 is rotatably connected to the L-shaped mounting plate 81. An inclined plate 823 is connected to the end of the L-shaped bracket 821 away from the rotating plate 822. The inclined plate 823... A drive cylinder 824 is connected, one end of which is connected to a U-shaped frame 825. A grinding wheel 826 is rotatably connected to the inner side of the U-shaped frame 825. A tension wheel 827 is also installed on an L-shaped bracket 821. A drive motor 828 is connected to the top of the L-shaped bracket 821. A drive wheel 829 is connected to the output end of the drive motor 828. A grinding belt 82a is also included. The drive wheel 829, the tension wheel 827, and the grinding wheel 826 are all connected through the grinding belt 82a.

[0043] The electric traveling roller frame 3 is installed on the ground rail 1, which can carry the cylinder 2 and drive the cylinder 2 to move linearly along the ground rail 1. By controlling the movement of the electric traveling roller frame 3, the position of the cylinder 2 can be adjusted to facilitate subsequent operations on the cylinder 2 at different positions. The beveling cutting device 70 moves along the ground rail 6 and performs beveling cutting on the cylinder 2 to ensure that the molten metal can fully fill the weld during welding. The cross truss robot 4, through its own cross-shaped movement structure, realizes the precise movement of the welding robot 5 and the root cleaning mechanism 80 in the horizontal and vertical directions, thereby accurately positioning the welding robot 5 and the root cleaning mechanism 80 on the cylinder 2. For the areas to be welded and the areas to be cleaned, the welding position of the cylinder 2 is adjusted by the electric traveling roller frame 3. Then, the electric push rod 831 is extended and retracted to drive the grinding and cleaning component 82 to move towards the cylinder 2, so as to adjust the distance between the grinding and cleaning component 82 and the surface of the cylinder 2. The drive motor 828 drives the drive wheel 829 to rotate, and the friction drives the grinding belt 82a to move, so as to transmit the power of the drive motor 828 to the grinding wheel 826, thereby removing the defect layer of the weld root of the cylinder 2, such as oxide scale, slag inclusions, pores, etc., so that the weld root reaches a flat and clean state, so that the welded position is in a state of no cleaning.

[0044] The beveling device 70 includes a movable frame 71 and bearing seats 72 connected to its top two sides. A rotating rod 73 is connected between the bearing seats 72. A beveling assembly 74 is connected to the rotating rod 73. It also includes a telescopic rod assembly 75 for driving the beveling assembly 74 to move towards the cylinder 2. Telescopic auxiliary support assemblies 76 are connected to both sides of the beveling assembly 74. A dust collection assembly 77 is connected to the top of the beveling assembly 74, and the dust collection assembly 77 includes at least two components. The bracket 771 has clamps 772 connected to its top. A flexible suction tube 773 is connected inside the clamps 772. One end of the flexible suction tube 773 is connected to a suction hood 774. The telescopic rod assembly 75 includes an electric push rod 751 and a hinge sleeve 752 connected to one end of the electric push rod 751. The other end of the electric push rod 751 is connected to a hinge seat 753 via a pin. The hinge seat 753 is mounted on the movable frame 71. The hinge sleeve 752 is connected to the connecting rod 746.

[0045] After the corresponding sections of the tower are assembled, the electric push rod 751 provides power to the beveling cutting assembly 74 to move towards the cylinder 2 through telescopic movement. This allows the beveling cutting assembly 74 to move towards the cylinder 2 and perform beveling cutting on the assembly position between the two cylinders 2 to meet the requirements of subsequent welding and other processes. At the same time, it reduces the difficulty after root cleaning and improves product quality. During beveling, the telescopic auxiliary support assembly 76 provides additional support for the beveling cutting assembly 74 to enhance its stability. Meanwhile, by adjusting the bending angle of the flexible dust suction pipe 773, its position can be flexibly adjusted according to the actual working conditions, making it convenient to place the dust hood 774 in a suitable position for dust suction, effectively reducing the pollution of the working environment by dust and smoke generated during the cutting process.

[0046] The bevel cutting assembly 74 includes symmetrically arranged T-shaped supports 741, with a protective cover 742 connected between the T-shaped supports 741. A cutting tool 743 is rotatably connected inside the protective cover 742. A servo motor 744 is mounted on the outside of one of the T-shaped supports 741. The output shaft of the servo motor 744 is connected to the cutting tool 743. The teeth of the cutting tool 743 are located outside the protective cover 742. A flexible suction pipe 745 is connected to the bottom end of the protective cover 742. One end of the flexible suction pipe 745 is connected to an external vacuum cleaner. A connecting rod 746 is provided between the ends of the T-shaped supports 741 away from the protective cover.

[0047] The T-shaped support 741 provides mounting positions for other components. The symmetrical arrangement ensures the structural stability and balance of the entire assembly, resulting in uniform force distribution during cutting. When cutting the kerf, the servo motor 744 drives the cutting tool 743 to rotate at high speed, utilizing its specific tooth structure to cut the cylinder 2, shaping the edges between the cylinders into the required bevel shape. At the same time, the protective cover 742 largely encloses the cutting tool 743, protecting it from damage caused by splashes and debris generated during cutting, and also preventing the tool from accidentally contacting other objects and being damaged.

[0048] The telescopic auxiliary support assembly 76 includes a side plate 761 and a mounting plate 762 connected to the side plate 761. A sleeve 763 is connected to the mounting plate 762. A smooth rod 764 is slidably connected inside the sleeve 763. A spring 76b is provided inside the sleeve 763. One end of the spring 76b is connected to one end of the smooth rod 764. One end of the smooth rod 764 is connected to a U-shaped frame 765, and the other end is symmetrically connected to a limiting block 766. Limiting grooves 767 are respectively opened on both sides of the sleeve 763. The limiting blocks 766 are slidably connected in the limiting grooves 767. A guide wheel 768 is rotatably connected to the inner side of the U-shaped frame 765. A guide rail 769 is also connected to the side plate 761. A slider 76a is slidably connected to the guide rail 769. The slider 76a is connected to the U-shaped frame 765.

[0049] When the electric push rod 751 drives the beveling cutting assembly 74 to move towards the cylinder 2, the side plate 761 drives the guide wheel 768 to move towards the cylinder 2. At this time, the U-shaped frame 765 drives the slider 76a to slide on the guide rail 769, guiding and restricting the movement direction of the U-shaped frame 765, making its movement more stable and accurate, so that the guide wheel 768 contacts the surface of the cylinder and plays a guiding and auxiliary support role in the beveling cutting assembly 74 during the cutting process, guiding the beveling cutting assembly 74 to cut along the surface of the cylinder 2, while sharing part of the cutting force and reducing the burden on the beveling cutting assembly 74. At the same time, when the beveling cutting assembly 74 gradually cuts to a certain depth, the polished rod 764 slides in the sleeve 763. At this time, the spring 76b enables the polished rod 764 to have a certain extension and retraction capacity within the sleeve 763. When the guide wheel 768 is subjected to pressure from the surface of the cylinder 2, the spring 76b will be compressed, and the polished rod 764 will slide into the sleeve 763. When the pressure decreases, the spring 76b will return to its original state, pushing the polished rod 764 to slide outward, so that the guide wheel 768 always maintains contact with the surface of the cylinder 2. At the same time, the spring 76b absorbs and buffers vibration and impact during the cutting process. During the sliding process of the polished rod 764 within the sleeve 763, it drives the limiting block 766 to slide within the limiting groove 767, thereby limiting the sliding range of the polished rod 764 within the sleeve 763 and preventing the polished rod 764 from coming out of the sleeve 763.

[0050] The implementation principle of this embodiment is as follows: During use, a hoisting device is used to place the two cylinders 2 to be welded onto the electric traveling roller frame 3. The fine-tuning function of the electric traveling roller frame 3 ensures accurate alignment of the assembly ends of the two cylinders 2, adjusting the assembly gap and misalignment to ensure the assembly quality meets requirements. Then, the bevel cutting device 70 causes the electric push rod 751 to extend and retract, pushing the bevel cutting assembly 74 towards the cylinder 2 via the hinge sleeve 752 and connecting rod 746. Simultaneously, the side plate 761 of the telescopic auxiliary support assembly 76 drives the guide wheel 768 towards the cylinder 2. The U-shaped frame 765 drives the slider 76a to slide on the guide rail 769, guiding the guide wheel 768 to smoothly contact the surface of the cylinder 2. Once the bevel cutting assembly 74 approaches the cylinder 2 to a suitable position, the servo motor 744 starts, and its output... The shaft drives the cutting tool 743 to rotate at high speed. The teeth of the cutting tool 743 cut the edge of the cylinder 2, cutting the edge of the cylinder into the required bevel shape. During the cutting process, as the cutting depth increases, the guide wheel 768 is subjected to pressure from the surface of the cylinder 2. The spring 76b absorbs and buffers the vibration and impact generated during the cutting process to ensure that the guide wheel 768 is always in close contact with the surface of the cylinder 2, guiding the bevel cutting assembly 74 to make stable cuts along the surface of the cylinder 2. During the cutting process, the dust collection assembly 77 starts to work. The operator adjusts the bending angle of the flexible dust collection pipe 773 according to the actual working conditions, so that the dust collection hood 774 is placed in a suitable position, sucking the dust and smoke generated during the cutting process into the flexible dust collection pipe 773, and then processing it through an external vacuum cleaner, effectively reducing the pollution of dust and smoke to the working environment.

[0051] After the bevel is cut, the cylinder 2 is rotated by the electric walking roller frame 3 to adjust it to a suitable welding position. At this time, the cross truss robot 4 accurately positions the welding robot 5 to the part of the cylinder 2 to be welded according to the preset program. Then the welding robot 5 starts and performs welding operation according to the set welding parameters to weld the two cylinders 2 together.

[0052] After welding is completed, the position of the cylinder 2 is adjusted again by the electric walking roller frame 3 so that the welded part is in a suitable position for root cleaning. Then, the extended end of the electric push rod 831 pushes the L-shaped bracket 821 to rotate around the rotating plate 822 through the hinge joint 833 and hinge seat 832, so that the grinding root cleaning component 82 moves towards the cylinder 2. The distance between the grinding root cleaning component 82 and the surface of the cylinder 2 is adjusted to a suitable position. Then, the drive motor 828 drives the drive wheel 829 to rotate, and the grinding belt 82a moves through friction to grind the weld at the root of the cylinder 2, remove the defect layer of the weld, such as oxide scale, slag inclusions, and pores, so that the root of the weld is flat and clean.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A non-root-cleaning welding mechanism for large-diameter towers, comprising: The system comprises a ground rail (1) and two cylindrical bodies (2), each cylindrical body (2) having at least two electric walking roller frames (3) at its bottom, the electric walking roller frames (3) being mounted on the ground rail (1), a cross truss manipulator (4) being mounted on one side of the ground rail (1), and a welding robot (5) being mounted on one end of the cross truss manipulator (4). The system is characterized in that a ground rail (6) is provided on the side of the ground rail (1) away from the cross truss manipulator (4), a bevel cutting device (70) is mounted on the ground rail (6), and a root cleaning mechanism (80) is mounted on one bottom end of the cross truss manipulator (4). The root cleaning mechanism (80) includes an L-shaped mounting plate (81) and a grinding-type root cleaning assembly (82), and also includes a telescopic rod assembly (83) that drives the grinding-type root cleaning assembly (82) to move toward the cylinder (2).

2. The non-root cleaning welding mechanism for large-diameter towers according to claim 1, characterized in that, The grinding-type root cleaning assembly (82) includes an L-shaped bracket (821) and a rotating plate (822) connected to one end thereto. The rotating plate (822) is rotatably connected to the L-shaped mounting plate (81). An inclined plate (823) is connected to the end of the L-shaped bracket (821) away from the rotating plate (822). A drive cylinder (824) is connected to the inclined plate (823). A U-shaped frame (825) is connected to one end of the drive cylinder (824). A grinding wheel (826) is rotatably connected to the inner side of a (825). A tensioning wheel (827) is also installed on the L-shaped bracket (821). A drive motor (828) is connected to the top of the L-shaped bracket (821). A drive wheel (829) is connected to the output end of the drive motor (828). A grinding belt (82a) is also included. The drive wheel (829), tensioning wheel (827) and grinding wheel (826) are all connected by the grinding belt (82a).

3. The non-root cleaning welding mechanism for large-diameter towers according to claim 1, characterized in that, The telescopic rod assembly (83) includes an electric push rod (831) and a hinge seat (832) connected to an L-shaped bracket (821). A hinge joint (833) is rotatably connected to the hinge seat (832). The hinge joint (833) is connected to the extended end of the electric push rod (831). The assembly also includes a hinge seat (834) connected to an L-shaped mounting plate (81). The hinge seat (834) is connected to the electric push rod (831) via a pin.

4. The non-root cleaning welding mechanism for large-diameter towers according to claim 1, characterized in that, The bevel cutting device (70) includes a movable frame (71) and bearing seats (72) connected to its top two sides. A rotating rod (73) is connected between the bearing seats (72). A bevel cutting assembly (74) is connected to the rotating rod (73). The device also includes a telescopic rod assembly (75) that drives the bevel cutting assembly (74) to move towards the cylinder (2). Telescopic auxiliary support assemblies (76) are connected to both sides of the bevel cutting assembly (74). A dust collection assembly (77) is connected to the top of the bevel cutting assembly (74). The dust collection assembly (77) includes at least two brackets (771). A clamp (772) is connected to the top of each bracket (771). A flexible dust collection tube (773) is connected inside the clamp (772). A dust collection hood (774) is connected to one end of the flexible dust collection tube (773).

5. The non-root cleaning welding mechanism for large-diameter towers according to claim 4, characterized in that, The beveling assembly (74) includes symmetrically arranged T-shaped supports (741), with a protective cover (742) connected between the T-shaped supports (741). A cutting tool (743) is rotatably connected inside the protective cover (742). A servo motor (744) is mounted on the outside of one of the T-shaped supports (741), and the output shaft of the servo motor (744) is connected to the cutting tool (743). The teeth of the cutting tool (743) are located outside the protective cover (742). A flexible suction tube (745) is connected to the bottom end of the protective cover (742), and one end of the flexible suction tube (745) is connected to an external vacuum cleaner. A connecting rod (746) is provided between the ends of the T-shaped supports (741) away from the protective cover.

6. The non-root cleaning welding mechanism for large-diameter towers according to claim 4, characterized in that, The telescopic auxiliary support assembly (76) includes a side plate (761) and a mounting plate (762) connected to the side plate (761). A sleeve (763) is connected to the mounting plate (762), and a smooth rod (764) is slidably connected inside the sleeve (763). A spring (76b) is provided inside the sleeve (763), and one end of the spring (76b) is connected to one end of the smooth rod (764). A U-shaped frame (765) is connected to one end of the smooth rod (764). The other end is symmetrically connected to a limiting block (766). Limiting grooves (767) are respectively opened on both sides of the sleeve (763). The limiting block (766) is slidably connected in the limiting groove (767). The inner side of the second U-shaped frame (765) is rotatably connected to a guide wheel (768). A guide rail (769) is also connected to the side plate (761). A slider (76a) is slidably connected to the guide rail (769). The slider (76a) is connected to the second U-shaped frame (765).

7. The non-root cleaning welding mechanism for large-diameter towers according to claim 4, characterized in that, The telescopic rod assembly 2 (75) includes an electric push rod 2 (751) and a hinge sleeve (752) connected to one end thereto. The other end of the electric push rod 2 (751) is connected to a hinge seat 3 (753) via a pin. The hinge seat 3 (753) is mounted on the movable frame (71). The hinge sleeve (752) is connected to the connecting rod (746).

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