An automatically alignable water pipeline welding apparatus

Abstract

This invention relates to the field of welding technology, specifically disclosing an automatic alignment water pipe welding device. It includes two coaxial locking frames for externally framing the ends of the water pipes, and an alignment beam connected between the two locking frames. The alignment beam restricts the radial relative displacement of the two locking frames. A calibration beam is also provided between the two locking frames for correction. When the calibration beam is not horizontal after placement, the height of the water pipes is fine-tuned using the calibration beam until the centers of the two water pipes are aligned. A cover connects the calibration beam to the alignment beam. This invention allows for the simultaneous alignment of the water pipes by setting the alignment beam during the installation of the locking frames, which is convenient and quick. Simultaneously, the calibration beam verifies the height of the installed water pipes and improves the fine-tuning mechanism, ensuring the water pipes are aligned again. This alignment method is simple in structure, convenient, and widely applicable.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a welding device for water pipelines that can automatically align. Background Technology

[0002] With the advancement of urban water supply in my country, the demand for large-diameter, high-pressure, and long-distance water transmission steel pipes has surged. Pipeline welding is a core process to ensure water transmission safety, prevent leakage, and withstand internal pressure and foundation settlement. The quality of the weld directly determines the lifespan of the pipeline network, operational safety, and maintenance costs. For a long time, water transmission pipelines have mainly relied on manual electric arc welding, manual tungsten inert gas welding, argon-electric welding, and semi-automatic flux-cored wire welding (FCAW). Advantages: simple and flexible equipment, adaptable to complex terrain and on-site assembly deviations. Although automatic welding equipment has been applied, there are still obvious shortcomings in its application to on-site construction of water pipelines. The equipment is limited in function and the post-weld treatment is disconnected: the existing equipment is only responsible for welding. Post-weld slag removal, oxide scale removal, grinding of excess material, and pre-inspection treatment need to be completed separately by manual labor / grinding machine. The process is fragmented, inefficient, and has large secondary positioning errors. The complex terrain in the field requires the equipment to be lightweight, but lightweighting often leads to insufficient rigidity, slippage, and reduced positioning accuracy, resulting in docking problems. Summary of the Invention

[0003] The purpose of this invention is to provide a water pipeline welding device that can automatically align the pipes, so as to solve the problems mentioned in the background art.

[0004] The assembly rotates on the outer wall of the water pipe and is welded using a welding torch; A calibration beam for calibration is also provided between the two locking frames. When the calibration beam is not horizontal after being placed, the height of the water pipe is finely adjusted by the calibration beam until the centers of the two water pipes are aligned. A shielding cover connects the verification beam and the alignment beam.

[0005] Preferably, the base support plate has an arc-shaped structure, and the pulley assembly on the base support plate includes pulley frames installed on both sides of the base support plate. A spring is installed inside the pulley frame, and one end of the spring is threadedly connected to a pulley.

[0006] Preferably, the top support plate has an arc-shaped structure, and the pulley assembly on the top support plate includes pulleys threadedly installed on both sides of the top support plate, and a locking rod is connected to the side of the top support plate facing away from the water pipe.

[0007] Preferably, the locking rod includes a threaded rod and a locking pin, with one end of the threaded rod movably connected to the top support plate and the other end fixedly connected to the locking pin.

[0008] Preferably, the verification beam has placement slots at both ends and is also provided with a locking plate that is movably connected to it; During the verification process, the verification beam is fitted onto the card post through a placement slot; When locked, the locking plate abuts against the locking post; When adjusting the height of the water pipe, rotate the calibration beam to make the clamping column rotate, and the clamping column drives the screw to rotate, so that the top support plate can be adjusted up and down. At this time, the top support plate can press down or loosen the water pipe.

[0009] Preferably, a grinding rod is also installed on the side of the calibration beam facing the water pipe. A grinding disc is fixedly connected to one end of the grinding rod. A cleaning frame and a shovel frame are respectively provided on the grinding disc. A shovel plate is fixedly connected to one end of the shovel frame, and a brush is connected to one end of the cleaning frame.

[0010] Preferably, the shovel frame is installed on the side facing the welding torch, and the cleaning frame is installed on the side away from the welding torch; During cleaning or shoveling, the front and rear positions of the sweeping frame and the shovel frame are interchanged by rotating the locking frame.

[0011] Preferably, one end of the shielding cover is connected to the alignment beam, and the other end is movably connected to an adjusting plate. Adjusting blocks are fixedly connected to both sides of the adjusting plate, and an adjusting slide is provided in the verification beam to cooperate with the adjusting blocks.

[0012] Preferably, an arc-shaped slider is fixedly connected to the side of the alignment beam facing the locking frame, and an arc-shaped groove is provided on the outer wall of the locking frame to slide in cooperation with the arc-shaped slider.

[0013] Preferably, the alignment beam and the verification beam are movably connected to the shielding cover.

[0014] The present invention has at least the following beneficial effects: 1. This solution allows for the alignment of water pipes during the installation of the locking bracket by setting up an alignment beam, which is convenient and quick. At the same time, the verification beam verifies the height of the water pipes after installation and improves the fine adjustment scheme to ensure that the water pipes are aligned again. This alignment method has a simple structure, is convenient, and has a wide range of applications. 2. By rotating in opposite directions, two different welding modes can be achieved. During welding, cleaning and grinding are performed simultaneously, followed by welding. In the opposite direction, welding slag is removed first, and then finishing is done. Alternatively, before welding, cleaning and grinding are performed, and during welding, the opposite direction is used to remove welding slag while welding and then finish the work. 3. The distance between the alignment beam and the verification beam can be adjusted, thereby adjusting the finishing time according to the actual situation and reducing the impact on the welded structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of Embodiment 3 of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of Embodiment 1 of the present invention; Figure 3 This is a front view of Embodiment 1 of the present invention; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 5 This is a top view of the structure of Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the verification beam rotation structure according to Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the connection structure between the grinding rod and the grinding disc in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the connection structure between the shielding cover, the alignment beam, and the verification beam in Embodiment 3 of the present invention.

[0016] In the diagram: 1. Locking frame; 101. Arc-shaped slide groove; 2. Alignment beam; 201. Welding torch; 202. Arc-shaped slider; 3. Verification beam; 301. Placement slot; 302. Locking plate; 4. Cover; 401. Adjustment plate; 402. Adjustment block; 5. Bottom support plate; 6. Top support plate; 7. Locking rod; 701. Locking post; 8. Grinding rod; 801. Grinding disc; 802. Cleaning frame; 803. Brush; 804. Shovel frame; 805. Shovel plate. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Please see Figures 2-6 A water pipe welding device with automatic alignment includes two coaxial locking frames 1 for externally framing the end of the water pipe, and an alignment beam 2 connected between the two locking frames 1. The alignment beam 2 restricts the two locking frames 1 to maintain radial relative displacement and keep their centers aligned. A welding torch 201 is installed on the alignment beam 2. The inner walls of the two locking frames 1 are connected to a bottom support plate 5 and a top support plate 6 that contact the water pipe. The bottom support plate 5 and the top support plate 6 are symmetrically arranged to clamp the water pipe. The bottom support plate 5 and the top support plate 6 are provided with pulley groups that allow the two locking frames 1 to rotate. During welding, the locking frames 1 rotate on the outer wall of the water pipe through the pulley groups and are welded by the welding torch 201. A calibration beam 3 for calibration is also provided between the two locking frames 1. When the calibration beam 3 is not horizontal after being placed, the height of the water pipe is finely adjusted by the calibration beam 3 until the centers of the two water pipes are aligned. A cover 4 is provided between the verification beam 3 and the alignment beam 2; The bottom support plate 5 has an arc-shaped structure. The pulley system on the bottom support plate 5 includes pulley frames installed on both sides of the bottom support plate 5. Springs are installed inside the pulley frames, and one end of the spring is threadedly connected to a pulley.

[0019] The top support plate 6 has an arc-shaped structure. The pulley system on the top support plate 6 includes pulleys threaded on both sides of the top support plate 6. A locking rod 7 is connected to the side of the top support plate 6 facing away from the water pipe.

[0020] The locking rod 7 includes a threaded rod and a locking pin 701. One end of the threaded rod is movably connected to the top support plate 6, and the other end is fixedly connected to the locking pin 701.

[0021] The verification beam 3 has placement slots 301 at both ends, and is also provided with locking plates 302 that are movably connected; When the verification is performed, the verification beam 3 is fitted onto the clamping post 701 through the placement groove 301. When locked, the locking plate 302 abuts against the locking post 701; When adjusting the height of the water pipe, rotate the calibration beam 3, which will cause the clamp 701 to rotate. The clamp 701 will then cause the screw to rotate, allowing the top support plate 6 to be adjusted up and down. At this time, the top support plate 6 can press down or loosen the water pipe. The aligning beam 2 and the calibration beam 3 are movably connected to the cover 4. Specifically, firstly, the ends of the water pipe are respectively fitted with two locking brackets 1. At this time, due to the locking of the main beam 2, the alignment of the water pipe can be completed at the same time as the locking brackets 1 fit the water pipe. Next, the locking rod 7 is rotated by the verification beam 3. Since the verification beam 3 is clamped to the locking post 701 through the placement groove 301 and the locking plate 302, the locking rod 7 also rotates when the verification beam 3 rotates. At this time, the verification beam 3 is like a wrench, adjusting the height of the locking rod 7, and applying pressure to the water pipe through the top support plate 6 to tighten the water pipe. There are several symmetrically arranged pulley sets on the bottom support plate 5. The pulley sets are equipped with springs for soft support of the water pipe. At the same time, the locking frame 1 can be rotated on the surface of the water pipe through the pulley sets, so that it can be rotated for welding, which is convenient and quick. This rotation method can rotate both the water pipe and the locking frame 1. Ideally, the number of rotations of the locking rod 7 or the height adjustment should be consistent on both sides. When the calibration beam 3 is placed, it should be in a horizontal state. A level can be installed inside the calibration beam 3 for observation. However, things may not always be ideal. For example, the springs may age or the standards may not be consistent, or the water pipes at both ends may be of different quality. Even if the two water pipes are fitted into the locking bracket 1, it can only guarantee the left and right direction. There may be slight differences in the up and down direction. In this case, it is necessary to press down the higher water pipe to maintain the consistency of the center. To solve this problem, the higher locking rod 7 can be adjusted using the calibration beam 3 to make it consistent with the height of the other locking rod 7, thereby achieving the purpose of adjusting the center of the water pipe and making it consistent. During welding, a dark glass plate can be installed on the shielding cover 4 to avoid glare during welding and eliminate the need to hold the welding mask.

[0022] Example 2 Please see Figure 7 A water pipe welding device that can automatically align includes a calibration beam 3 with a grinding rod 8 installed on the side facing the water pipe. One end of the grinding rod 8 is fixedly connected to a grinding disc 801. A cleaning frame 802 and a shovel frame 804 are respectively provided on the grinding disc 801. One end of the shovel frame 804 is fixedly connected to a shovel plate 805. One end of the cleaning frame 802 is connected to a brush 803. The shovel frame 804 is installed on the side facing the welding torch 201, and the cleaning frame 802 is installed on the side away from the welding torch 201; when cleaning or shoveling, the front and rear positions of the cleaning frame 802 and the shovel frame 804 are interchanged by rotating the locking frame 1. There is a grinding component fixedly connected to the grinding disc 801 between the sweeping frame 802 and the shovel frame 804. This component can be a grinding stone or sandpaper, etc.

[0023] Specifically, this embodiment is an improvement on embodiment one. In order to achieve better welding results, the welding area needs to be ground during welding and also needs to be ground after welding. Before welding, by rotating the locking bracket 1 to one side, the brush 803 first cleans the surface of the water pipe, and the grinding part simultaneously grinds the water pipe connection. At this time, the brush 803 is in front and the grinding part is behind. After welding is completed, rotate the locking frame 1 in the opposite direction. First, let the scraper 804 contact the surface of the water pipe to remove the welding residue. Then, grind the surface to avoid jamming. At this time, the scraper plate 805 is in front and the grinding part is behind. At this time, you can grind and finish the finishing work at the same time. This results in two modes: the frame rotates to one side, and during welding, it is first cleaned and then ground before welding, all done simultaneously; when rotating in the opposite direction, the welding slag is first removed before finishing; or before welding, cleaning and grinding are performed, and during welding, the frame rotates in the opposite direction, and the welding slag is removed while welding, followed by finishing.

[0024] Example 3 Please see Figure 1 and Figure 8A water pipeline welding device that can automatically align is provided. One end of the cover 4 is connected to the alignment beam 2, and the other end is movably connected to the adjustment plate 401. Adjustment blocks 402 are fixedly connected to both sides of the adjustment plate 401. The calibration beam 3 is provided with an adjustment slide that cooperates with the adjustment block 402.

[0025] An arc-shaped slider 202 is fixedly connected to the side of the main beam 2 facing the locking frame 1. An arc-shaped groove 101 is provided on the outer wall of the locking frame 1 to slide in cooperation with the arc-shaped slider 202. Specifically, this example is an improvement on embodiment two. Through this implementation method, the distance between the main beam 2 and the locking frame 1 can be adjusted, thereby adjusting the distance between the welded part and the ground part, and fixing can be completed. In this embodiment, after welding, fine finishing can be performed. The time of grinding can be adjusted according to different welds. If you want the fine finishing to be slower, increase the distance between the alignment beam 2 and the locking frame 1, and vice versa. After adjustment, the alignment beam 2 can be fixed as needed, which can be done by bolts or other means, which will not be described in detail. Differences in metal materials and welding energy intensity both affect the grinding and finishing time. Therefore, this solution uses an adjustable structure to regulate the timing of finishing work by adjusting the distance, thus avoiding any impact on the welded structure. It should be noted that the grinding in this embodiment is not a violent grinding method using an angle grinder or polisher, but a fine-tuning method using a grinding stone or sandpaper, in order to prevent damage to the weld by using traditional grinding methods after welding.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A water pipeline welding device capable of automatic alignment, characterized in that, include: Two coaxial locking brackets (1) for externally framing the ends of the water pipe, and an alignment beam (2) connected between the two locking brackets (1), the alignment beam (2) restricting the two locking brackets (1) to maintain radial relative displacement and keep their centers aligned; a welding torch (201) is mounted on the alignment beam (2). The inner walls of the two locking frames (1) are connected to a bottom support plate (5) and a top support plate (6) that are in contact with the water pipe. The bottom support plate (5) and the top support plate (6) are symmetrically arranged to clamp the water pipe. The bottom support plate (5) and the top support plate (6) are provided with pulley groups that allow the two locking frames (1) to rotate. During welding, the locking frame (1) rotates on the outer wall of the water pipe through the pulley group and is welded by the welding gun (201). A calibration beam (3) for calibration is provided between the two locking frames (1). When the calibration beam (3) is placed in a non-horizontal state, the height of the water pipe is finely adjusted by the calibration beam (3) until the centers of the two water pipes are consistent. A cover (4) is connected between the verification beam (3) and the alignment beam (2).

2. The water pipeline welding equipment capable of automatic alignment according to claim 1, characterized in that: The bottom support plate (5) has an arc-shaped structure. The pulley assembly on the bottom support plate (5) includes pulley frames installed on both sides of the bottom support plate (5). A spring is installed inside the pulley frame, and a pulley is threaded to one end of the spring.

3. The water pipeline welding equipment capable of automatic alignment according to claim 1, characterized in that: The top support plate (6) has an arc-shaped structure. The pulley assembly on the top support plate (6) includes pulleys threaded on both sides of the top support plate (6). A locking rod (7) is connected to the side of the top support plate (6) facing away from the water pipe.

4. The water pipeline welding equipment capable of automatic alignment according to claim 3, characterized in that: The locking rod (7) includes a threaded rod and a locking pin (701). One end of the threaded rod is movably connected to the top support plate (6), and the other end is fixedly connected to the locking pin (701).

5. The water pipeline welding equipment capable of automatic alignment according to claim 4, characterized in that: The verification beam (3) has placement slots (301) at both ends and is also provided with locking plates (302) that are movably connected. When the verification is performed, the verification beam (3) is fitted onto the card post (701) through the placement slot (301); When locked, the locking plate (302) abuts against the locking post (701). When adjusting the height of the water pipe, rotate the verification beam (3) so that the verification beam (3) drives the locking post (701) to rotate. The locking post (701) drives the screw to rotate, causing the top support plate (6) to be adjusted up and down. At this time, the top support plate (6) presses down or releases the water pipe.

6. The water pipeline welding equipment capable of automatic alignment according to claim 1, characterized in that: The side of the verification beam (3) facing the water pipe is also equipped with a grinding rod (8). One end of the grinding rod (8) is fixedly connected to a grinding disc (801). A cleaning frame (802) and a shovel frame (804) are respectively provided on the grinding disc (801). One end of the shovel frame (804) is fixedly connected to a shovel plate (805), and one end of the cleaning frame (802) is connected to a brush (803).

7. The water pipeline welding equipment capable of automatic alignment according to claim 6, characterized in that: The shovel holder (804) is installed on the side facing the welding torch (201), and the cleaning holder (802) is installed on the side away from the welding torch (201); During cleaning or shoveling, the front and rear positions of the cleaning frame (802) and the shovel frame (804) are interchanged by rotating the locking frame (1).

8. The water pipeline welding equipment capable of automatic alignment according to claim 1, characterized in that: The alignment beam (2) and the verification beam (3) are movably connected to the shielding cover (4).

9. The water pipeline welding equipment capable of automatic alignment according to claim 1, characterized in that: One end of the shield (4) is connected to the alignment beam (2), and the other end is movably connected to an adjustment plate (401). Adjustment blocks (402) are fixedly connected to both sides of the adjustment plate (401). An adjustment slide is provided in the verification beam (3) to cooperate with the adjustment block (402).

10. The water pipeline welding equipment capable of automatic alignment according to claim 8, characterized in that: The aligning beam (2) is fixedly connected to an arc-shaped slider (202) on the side facing the locking frame (1), and the outer wall of the locking frame (1) is provided with an arc-shaped groove (101) that slides in cooperation with the arc-shaped slider (202).

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