A welding aid for a butt weld of a drum pipe joint assembly

Abstract

The utility model discloses a kind of welding auxiliary devices for butt joint weld of pot cylinder pipe joint assembly, including built-in chuck, frame, movable flat plate and rotatable automatic welding equipment;Built-in chuck is fixedly with pipe joint of different diameters;Frame is fixedly connected with built-in chuck;Movable flat plate is horizontally slidingly connected with built-in chuck;Rotatable automatic welding equipment is fixed on movable flat plate, with 360 degrees rotation function, can be layered along weld trajectory welding.The utility model solves the problem that automatic welding equipment is difficult to position in the center of weld in butt joint weld of pot cylinder pipe joint assembly welding, thereby greatly improves welding efficiency and precision, reduces manual labor.

Description

Technical Field

[0001] This utility model relates to the field of welding auxiliary equipment technology, and in particular to a welding auxiliary device for butt welds of boiler drum pipe joint assemblies. Background Technology

[0002] In the field of boiler and pressure vessel manufacturing, the boiler drum, as a core component, and the welding quality of itself and its pipe fittings directly affect the safety and reliability of the equipment. However, the welding manufacturing of boiler drum components faces severe challenges: the welding workload is large, and the quality of manual welding is difficult to guarantee; the boiler drum is usually a thick-walled structure with a large amount of weld metal, resulting in a huge overall welding workload. Relying on manual welding for long periods of time is not only inefficient, but also prone to welder fatigue, poor weld quality stability, defects, and high rework rates. The densely distributed pipe fittings and their components on the boiler drum often have non-radial openings or eccentric structures, resulting in complex spatial positions of their butt welds (irregular spatial curves). This presents two major challenges for automated welding: first, standard automatic welding equipment, due to space limitations or angle issues, has difficulty stably approaching and positioning the welding torch to the weld initiation point in these special locations; second, the spatial orientation of the weld is complex and variable, making it extremely difficult to accurately position the welding torch trajectory and maintain the optimal welding posture (such as welding torch angle and distance).

[0003] Current technologies lack effective solutions to the aforementioned problems of automatic welding positioning and accessibility of pipe joints and components, severely hindering the improvement of welding efficiency and quality. Therefore, there is an urgent need to develop a dedicated welding auxiliary device to solve the challenges of automatic welding machine placement and precise positioning of butt welds in boiler drum pipe joint components. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a welding auxiliary device for butt welds of boiler drum pipe joint components, which solves the problem that automatic welding equipment is difficult to position at the center of the weld during the welding of butt welds of boiler drum pipe joint components, thereby greatly improving welding efficiency and accuracy.

[0005] The present invention adopts the following technical solution: A welding auxiliary device for butt welds of boiler drum pipe joint assemblies includes an embedded chuck, a frame, a movable plate, and a rotatable automatic welding device. The embedded chuck is tightly fixed to pipe fittings of different diameters; the frame is fixedly connected to the embedded chuck; the movable plate is horizontally slidably connected to the embedded chuck; the rotatable automatic welding equipment is fixed on the movable plate and has a 360-degree rotation function, which can perform layer-by-layer welding along the weld seam trajectory.

[0006] Preferably, the embedded chuck is a four-jaw chuck, which is tightly fixed to the inner wall of pipe fittings of different diameters.

[0007] Preferably, the frame is provided with parallel guide rails on both sides, and four sliders are provided at the bottom of the movable plate, which move horizontally along the guide rails.

[0008] Preferably, the frame has a slot at its center to facilitate adjustment of the calipers of the embedded chuck.

[0009] Preferably, the rotatable automatic welding equipment includes a welding machine base, a welding machine rotating shaft, and a welding machine torch. The welding machine base is fixed on a movable plate, the movable plate is rotatably connected to the welding machine rotating shaft, and the welding machine torch is fixedly connected to the welding machine rotating shaft.

[0010] The beneficial effects of this utility model are: This utility model designs a welding auxiliary tooling that can accurately position the center of the weld, solving the problem that automatic welding equipment is difficult to position at the center of the weld in the butt weld of the boiler drum pipe joint assembly, thereby greatly improving welding efficiency and accuracy and reducing manual labor. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a welding auxiliary device according to the present invention; Figure 2 This is a schematic diagram of the welded product; Figure 3 This is a schematic diagram of the working status of the welding auxiliary device; Figure 4 This is a schematic diagram of the framework structure; Figure 5 This is a schematic diagram of an embedded chuck structure; Figure 6 This is a schematic diagram of the mobile tablet structure; In the diagram: 1. Embedded chuck; 2. Slider; 3. Movable plate; 4. Welding machine base; 5. Welding machine torch; 6. Frame; 7. Welding machine rotating shaft; 8. Boiler drum connecting pipe; 9. Weld seam; 10. Boiler drum; 11. Guide rail; 12. Groove; 13. Clamp; 14. Slider. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example: Figure 1 As shown, a welding auxiliary device for butt welds of boiler drum pipe joint assemblies includes an embedded chuck 1, a frame 6, a movable plate 3, and a rotatable automatic welding device; the welded products are as follows: Figure 2 As shown, it includes a boiler drum nozzle 8 and a boiler drum 10, which are connected by a weld 9.

[0013] like Figure 5As shown, the embedded chuck: the size can be adjusted by the caliper 13, which can be tightly fixed with pipe fittings of different diameters and form a rigid connection with the frame to ensure the overall stability of the device; like Figure 4 As shown, the frame is fixedly connected to the embedded chuck and has two parallel guide rails 11, which provide a moving path for the movable plate and facilitate the adjustment of the lateral position of the welding equipment; a slot 12 is opened in the center of the frame.

[0014] like Figure 6 As shown, the movable plate has four sliders 2 at the bottom, which can move freely along the guide rail of the frame. The top is used to fix the rotatable automatic welding equipment. The position of the welding equipment can be finely adjusted by sliding the sliders to accurately align with the center of the weld. Rotatable automatic welding equipment: Fixed on a movable plate, it has a 360-degree rotation function and can perform layer-by-layer welding along the weld seam trajectory to ensure uniform weld formation. The rotatable automatic welding equipment includes a welding machine base 4, a welding machine rotating shaft 7, and a welding machine torch 5. The welding machine base is fixed on the movable plate, the movable plate is rotatably connected to the welding machine rotating shaft, and the welding machine torch is fixedly connected to the welding machine rotating shaft.

[0015] like Figure 3 As shown, when using this utility model, before welding, the embedded chuck 1 is inserted into the boiler drum pipe joint 8. The embedded chuck is then adjusted to ensure it is firmly fixed to the pipe joint, guaranteeing that the entire device remains in place and that the frame 6 is horizontal. Subsequently, the movable plate 3 is moved along the guide rail of the frame 6 using the slider 2 at its bottom, while simultaneously observing the relative position of the welding torch 5 and the weld seam 9 until the welding torch is aligned with the center of the weld seam. After adjustment, the position of the movable plate is fixed, and the rotatable automatic welding equipment is started, causing it to rotate the welding torch 5 360 degrees via the welding machine's rotating shaft 7. The weld seam 9 is then welded layer by layer according to preset parameters until welding is complete.

[0016] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A welding auxiliary device for butt welds of boiler drum pipe joint assemblies, characterized in that, It includes an embedded chuck, frame, movable plate, and rotatable automatic welding equipment; The embedded chuck is tightly fixed to pipe fittings of different diameters; the frame is fixedly connected to the embedded chuck; the movable plate is horizontally slidably connected to the embedded chuck; the rotatable automatic welding equipment is fixed on the movable plate and has a 360-degree rotation function, which can perform layer-by-layer welding along the weld seam trajectory.

2. The welding auxiliary device for butt welds of boiler drum pipe joint assemblies according to claim 1, characterized in that, The embedded chuck is a four-jaw chuck, which is tightly fixed to the inner wall of pipe fittings of different diameters.

3. The welding auxiliary device for butt welds of boiler drum pipe joint assemblies according to claim 1, characterized in that, The frame has parallel guide rails on both sides, and four sliders are correspondingly provided on the bottom of the movable plate. The four sliders move horizontally along the guide rails.

4. The welding auxiliary device for butt welds of boiler drum pipe joint assemblies according to claim 1, characterized in that, The frame has a slot at its center.

5. The welding auxiliary device for butt welds of boiler drum pipe joint assemblies according to claim 1, characterized in that, The rotatable automatic welding equipment includes a welding machine base, a welding machine rotating shaft, and a welding machine torch. The welding machine base is fixed on a movable plate, and the movable plate is rotatably connected to the welding machine rotating shaft. The welding machine torch is fixedly connected to the welding machine rotating shaft.

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