Pipe welding two-way positioning butt joint device

Abstract

The utility model discloses a pipeline welding two -way positioning butt joint device relates to welding auxiliary device field. The pipeline welding two -way positioning butt joint device includes support rail, fixedly connected on the fixed platform of support rail and the movable platform of swing -connected on support rail, and the inside of support rail is equipped with the drive structure for driving movable platform linear shift, and the top of fixed platform and movable platform all are installed with pipeline clamping structure. The pipeline welding two -way positioning butt joint device has realized the axial accurate movement of two clamped pipelines and two -way positioning butt joint, and through the pipeline clamping structure that constitutes by fixed arc seat and movable arc seat and the fastening structure between them, realized the quick clamping of pipeline and reliable locking, through setting detachable replacement arc -shaped clamping block, makes a set of device to be able to through replacing the clamping block of different radian to adapt multiple pipe diameter specifications, enhances the equipment versatility and has reduced the use cost.

Description

Technical Field

[0001] This utility model relates to the technical field of welding auxiliary devices, specifically a bidirectional positioning and docking device for pipeline welding. Background Technology

[0002] In pipeline construction and maintenance, it is often necessary to connect two sections of pipeline and perform circumferential welds. In existing technologies, simple clamps or manual handling are often used to position and fix the ends of the pipeline.

[0003] The aforementioned methods suffer from low pipe axis alignment accuracy, susceptibility to circumferential deflection, and uneven clamping force, leading to inconsistent weld gaps and impacting weld quality and structural strength. To accommodate welding requirements of different pipe diameters, multiple sets of specialized clamps are typically required, resulting in lengthy on-site preparation time and poor equipment versatility. While some adjustable clamping devices exist in the prior art, their adjustment range is limited, making it difficult to achieve precise alignment of the pipe ends and control of pre-tightening force during welding. Furthermore, thermal stress after welding can cause pipe position shifts, failing to meet the dual requirements of high-quality pipe welding processes for clamping and positioning accuracy and ease of operation. To address these shortcomings, this invention provides a bidirectional positioning and docking device for pipe welding, resolving the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a bidirectional positioning and docking device for pipe welding. Through the arrangement of a fixed platform and a movable platform on the support rail, along with a built-in drive structure, it achieves precise axial movement and bidirectional positioning and docking of two clamped pipes, ensuring coaxiality and uniformity of the joint gap during pipe welding. The pipe clamping structure, composed of a fixed arc seat and a movable arc seat, along with the fastening structure between them, enables rapid clamping and reliable locking of the pipes, improving the convenience of clamping operations. In particular, by incorporating detachable and replaceable arc-shaped locking blocks inside the fixed and movable arc seats, a single device can adapt to various pipe diameters by replacing locking blocks of different curvatures, enhancing equipment versatility and reducing operating costs.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a bidirectional positioning and docking device for pipe welding, comprising a support rail, a fixed platform fixedly connected to the support rail, and a movable platform movably connected to the support rail, wherein the support rail is provided with a drive structure for driving the movable platform to move linearly. The top of both the fixed platform and the movable platform is equipped with a pipe clamping structure. The pipe clamping structure includes a fixed frame that is fixedly connected to the fixed platform and the movable platform respectively. The fixed frame is provided with a fixed arc seat and a movable arc seat that is rotatably connected to the fixed arc seat. A fastening structure is provided between the fixed arc seat and the movable arc seat. Both the fixed and movable arc seats are equipped with detachable arc-shaped locking blocks, which are used to replace different arcs to adapt to various pipe models.

[0006] Preferably, the drive structure includes a groove formed inside the support rail and an electric push rod fixedly connected inside the groove. The output end of the electric push rod is provided with a slide table, which is slidably connected inside the groove and fixedly connected to the movable platform.

[0007] Preferably, the fastening structure includes a locking bolt rotatably connected to the fixed arc seat and a slot formed on the movable arc seat. When the locking bolt is engaged in the slot, a locking nut is sleeved on it and rotated to lock the fixed arc seat and the movable arc seat.

[0008] Preferably, the fixed arc seat and the movable arc seat are rotatably connected by a pin.

[0009] Preferably, a rubber pad is fixedly connected to the side of the arc-shaped block closest to the pipe.

[0010] Preferably, both the fixed arc seat and the movable arc seat have slots inside for limiting the arc-shaped block, and the slots have retractable blocks inside, so that the arc-shaped block is limited between the slots and the blocks.

[0011] Preferably, both the fixed arc seat and the movable arc seat are fixedly connected to a sleeve for guiding the stop block, and an adjusting screw is threadedly connected to the sleeve, the adjusting screw being rotatably connected to the stop block.

[0012] The technical effects and advantages of this utility model are as follows: This bidirectional positioning and docking device for pipe welding, through the arrangement of fixed and movable platforms on the support rail and the built-in drive structure, achieves precise axial movement and bidirectional positioning and docking of two clamped pipes, ensuring coaxiality and uniformity of the joint gap during pipe welding. The pipe clamping structure, composed of fixed and movable arc seats and the fastening structure between them, enables rapid clamping and reliable locking of the pipes, improving the convenience of clamping operations. In particular, by incorporating detachable and replaceable arc-shaped locking blocks inside the fixed and movable arc seats, a single device can adapt to various pipe diameters by replacing locking blocks of different curvatures, enhancing equipment versatility and reducing operating costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the electric push rod of this utility model; Figure 3 This is a schematic diagram of pipe welding according to the present invention; Figure 4 This is a schematic diagram of the pipeline separation of this utility model; Figure 5 This is a schematic diagram of the structure of the slide table of this utility model; Figure 6 This is a schematic diagram showing the lifting of the movable arc seat of this utility model; Figure 7 This is a schematic diagram of the fastening of the movable arc seat of this utility model; Figure 8 This is a disassembly diagram of the arc-shaped card block of this utility model; Figure 9 This is a schematic diagram of the connection of the stop block of this utility model.

[0015] In the diagram: 1. Support rail; 11. Slide groove; 12. Electric push rod; 13. Slide table; 2. Fixed platform; 3. Movable platform; 4. Fixed frame; 41. Fixed arc seat; 411. Locking bolt; 412. Locking nut; 42. Movable arc seat; 421. Pin; 422. Bayonet; 5. Slot; 6. Arc-shaped locking block; 61. Rubber pad; 7. Stop block; 71. Sleeve; 72. Adjusting screw. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This embodiment discloses a bidirectional positioning and docking device for pipe welding, according to the appendix. Figure 1 To be continued Figure 9As shown, the system includes a support rail 1, a fixed platform 2 fixedly connected to the support rail 1, and a movable platform 3 movably connected to the support rail 1. The support rail 1 has a drive structure inside for driving the movable platform 3 to move linearly. Both the fixed platform 2 and the movable platform 3 have pipe clamping structures installed on their tops. The pipe clamping structures include fixed frames 4 fixedly connected to the fixed platform 2 and the movable platform 3, respectively. The fixed frame 4 has a fixed arc seat 41 and a movable arc seat 42 rotatably connected to the fixed arc seat 41. A fastening structure is provided between the fixed arc seat 41 and the movable arc seat 42. Both the fixed arc seat 41 and the movable arc seat 42 have detachable arc-shaped clips 6 installed inside. The arc-shaped clips 6 are used to replace different arcs to adapt to various pipe models.

[0018] According to the appendix Figure 2 and attached Figure 5 As shown, the drive structure includes a groove 11 formed inside the support rail 1 and an electric push rod 12 fixedly connected inside the groove 11. The output end of the electric push rod 12 is provided with a slide table 13, which is slidably connected inside the groove 11 and fixedly connected to the movable platform 3. Furthermore, when the electric push rod 12 is activated, it pushes the slide table 13 to slide along the groove 11, thereby driving the movable platform 3 to move linearly, achieving precise control of pipe docking or disengagement.

[0019] According to the appendix Figure 6 and attached Figure 7 As shown, the fastening structure includes a locking bolt 411 rotatably connected to the fixed arc seat 41 and a bayonet 422 formed on the movable arc seat 42. When the locking bolt 411 is engaged with the bayonet 422, the locking nut 412 is sleeved and rotated to lock the fixed arc seat 41 and the movable arc seat 42. Furthermore, the fixed arc seat 41 and the movable arc seat 42 are rotatably connected by a pin 421, allowing the movable arc seat 42 to be lifted or snapped shut, facilitating pipe clamping.

[0020] According to the appendix Figure 8 As shown, a rubber pad 61 is fixedly connected to the side of the arc-shaped clamp 6 near the pipe to increase friction with the pipe and prevent damage to the pipe surface. Furthermore, the arc-shaped clamp 6 can be replaced with different arc models according to the pipe diameter to achieve compatibility with multiple pipe specifications.

[0021] According to the appendix Figure 9 As shown, both the fixed arc seat 41 and the movable arc seat 42 have slots 5 inside for limiting the arc-shaped locking block 6. A retractable stop block 7 is provided inside the slot 5, and the arc-shaped locking block 6 is limited between the slot 5 and the stop block 7. Furthermore, both the fixed arc seat 41 and the movable arc seat 42 are fixedly connected to sleeves 71 for guiding the stop block 7. An adjusting screw 72 is threaded onto the sleeve 71, and the adjusting screw 72 is rotatably connected to the stop block 7. By rotating the adjusting screw 72, the stop block 7 can be moved, thereby limiting or releasing the arc-shaped locking block 6, ensuring that the arc-shaped locking block 6 is securely installed.

[0022] According to the appendix Figure 1 To be continued Figure 9 As shown, specifically disclosed, the control drive structure drives the movable table 3 and the pipe clamping structure on the movable table 3 to move laterally, causing the two sets of pipes to separate or come into contact, thereby controlling the pipes to dock or separate for heating and welding operations. It should be particularly emphasized that the pipe clamping structure achieves rapid clamping and positioning of the pipes through the engagement and locking of the fixed arc seat 41 and the movable arc seat 42, and the detachable design of the arc-shaped clamping block 6 improves the versatility of the device.

[0023] According to the appendix Figure 3 and attached Figure 4 As shown, it is particularly important to emphasize that during welding, the pipe is clamped on the fixed platform 2 and the movable platform 3. The movable platform 3 is moved by the electric push rod 12 to make the pipe ends meet for welding. After welding is completed, the electric push rod 12 is pulled back to separate the pipe for subsequent operations.

[0024] Example 1: This example uses pipe butt welding as an example, combined with the attached... Figure 1 To be continued Figure 9 Detailed workflow description: The workflow is as follows: First, place the pipe on the fixed arc seat 41 of the fixed platform 2 and the movable platform 3, lift the movable arc seat 42 and put in the pipe, then fasten the movable arc seat 42 so that the locking bolt 411 is inserted into the bayonet 422, and tighten the locking nut 412 to fix the pipe. Before fixing the pipe, a suitable arc-shaped clamp 6 can be selected according to the pipe diameter and installed in the clamping groove 5. The stop block 7 is pushed by adjusting the screw 72 to limit the arc-shaped clamp 6. Then, the heating plate is used to heat the end faces of the two sets of pipes. After heating is completed, the heating plate is removed, the electric push rod 12 is started, and the movable table 3 is moved along the support rail 1 so that the end faces of the two pipes are connected. Finally, after welding is completed, the electric push rod 12 is pulled back to separate the pipe, the locking nut 412 is loosened and the movable arc seat 42 is lifted to remove the pipe.

[0025] Example 2: This example uses pipe model replacement as an example, combined with the attached... Figure 1 To be continued Figure 9 Detailed workflow description: The workflow is as follows: First, loosen the locking nut 412 and lift the movable arc seat 42 to remove the original pipe; Secondly, based on the new pipe diameter, replace the arc-shaped clamp 6 and adjust the position of the stop block 7 to ensure that the arc-shaped clamp 6 matches the pipe. Then, reposition the pipe and engage the movable arc seat 42, and tighten the locking nut 412; Finally, the position of the movable platform 3 is adjusted by the electric push rod 12 for docking or testing.

[0026] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bidirectional positioning and docking device for pipe welding, comprising a support rail (1), a fixed platform (2) fixedly connected to the support rail (1), and a movable platform (3) movably connected to the support rail (1), characterized in that: The support rail (1) is provided with a drive structure for driving the movable platform (3) to move linearly. The top of both the fixed platform (2) and the movable platform (3) is equipped with a pipe clamping structure. The pipe clamping structure includes a fixed frame (4) that is fixedly connected to the fixed platform (2) and the movable platform (3) respectively. The fixed frame (4) is provided with a fixed arc seat (41) and a movable arc seat (42) that is rotatably connected to the fixed arc seat (41). A fastening structure is provided between the fixed arc seat (41) and the movable arc seat (42). Both the fixed arc seat (41) and the movable arc seat (42) are equipped with detachable arc-shaped clips (6), which are used to replace different arcs to adapt to various pipe models.

2. The bidirectional positioning and docking device for pipe welding according to claim 1, characterized in that, The drive structure includes a groove (11) opened inside the support rail (1) and an electric push rod (12) fixedly connected inside the groove (11). The output end of the electric push rod (12) is provided with a slide table (13). The slide table (13) is slidably connected inside the groove (11) and fixedly connected to the movable platform (3).

3. The bidirectional positioning and docking device for pipe welding according to claim 1, characterized in that, The fastening structure includes a locking bolt (411) rotatably connected to the fixed arc seat (41) and a slot (422) opened on the movable arc seat (42). When the locking bolt (411) is engaged in the slot (422), the locking nut (412) is sleeved on and rotated to lock the fixed arc seat (41) and the movable arc seat (42).

4. The bidirectional positioning and docking device for pipe welding according to claim 3, characterized in that, The fixed arc seat (41) and the movable arc seat (42) are rotatably connected by a pin (421).

5. A bidirectional positioning and docking device for pipe welding according to claim 1, characterized in that, The arc-shaped locking block (6) is fixedly connected to a rubber pad (61) on the side near the pipe.

6. The bidirectional positioning and docking device for pipe welding according to claim 1, characterized in that, Both the fixed arc seat (41) and the movable arc seat (42) have slots (5) for limiting the arc-shaped block (6). The slots (5) have retractable blocks (7) inside, and the arc-shaped block (6) is limited between the slots (5) and the blocks (7).

7. A bidirectional positioning and docking device for pipe welding according to claim 6, characterized in that, Both the fixed arc seat (41) and the movable arc seat (42) are fixedly connected to a sleeve (71) for guiding the stop (7). An adjusting screw (72) is threaded onto the sleeve (71), and the adjusting screw (72) is rotatably connected to the stop (7).

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