Pipeline welding centering tool

Abstract

The utility model relates to the technical field of welding centering tools, in particular to a pipeline welding centering tool. According to the technical scheme, the centering device comprises two mounting seats and further comprises centering assemblies and linkage mechanisms, the centering assemblies and the linkage mechanisms are mounted on the mounting seats, the linkage mechanisms are mounted on the two centering assemblies located on the different mounting seats, and the spacing adjusting mechanism is mounted on the two mounting seats. After centering operation is completed, when the distance between two pipelines needs to be adjusted, the second rotating handle is rotated to drive the two-way lead screw to rotate, the two installation bases can be made to be close to or far away from each other, then the clamping plates on the two sides are driven to move, the pipelines can be driven to move through friction force between the clamping plates and the pipelines, and therefore the pipeline centering device is convenient to use. And therefore, after the two pipelines are centered, the distance between the two pipelines can still be quickly adjusted, the working efficiency can be effectively improved, and the working amount of labor can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding alignment tools, in particular to a pipeline welding alignment tool. Background Art

[0002] During the operation, maintenance and overhaul of power plants, the alignment work before the welding of pipeline replacement and newly installed pipelines is often encountered. Due to the different pipeline pressure grades, materials, wall thicknesses and diameters, the requirements for alignment before welding are relatively strict. Especially for high-pressure pipelines, the deviation of the alignment center line should not exceed 1 / 200 mm.

[0003] After the existing pipeline alignment tool clamps and aligns the pipeline, the distance between the two pipelines cannot be adjusted. In actual welding work, the gap between the two pipelines usually needs to be adjusted according to the requirements of the welding process. The size of this gap will directly affect the quality of welding. Too large or too small a gap may affect the formation of the weld and the performance of the welded joint. If the gap is too large, it may lead to incomplete penetration and reduce the strength of the joint. If the gap is too small, it may lead to welding defects such as pores and inclusions during the welding process. After the existing pipeline alignment tool aligns and fixes the pipeline, the distance between the two pipelines cannot be adjusted. When the gap between the two pipelines does not meet the standard after clamping and fixing the two pipelines, it is necessary to re-clamp and position the pipeline, which is more cumbersome and not conducive to improving work efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems in the background art and propose a pipeline welding alignment tool that can adjust the distance between two pipelines after clamping and aligning the pipelines.

[0005] The technical solution of the utility model: A pipeline welding alignment tool includes a mounting base, and further includes:

[0006] There are two mounting bases, and alignment components are installed on the mounting bases. The alignment components clamp the pipeline and position the center of the pipeline.

[0007] A linkage mechanism is installed on the alignment components of two different mounting bases. The linkage mechanism controls the alignment components of the two mounting bases to clamp the pipeline simultaneously.

[0008] A spacing adjustment mechanism is installed on the two mounting bases. The spacing adjustment mechanism adjusts the distance between the two pipelines.

[0009] Optionally, the centering component includes fastening screw rods threadedly connected to the upper and lower sides of the mounting base, clamping plates rotatably mounted on the fastening screw rods, and first rotating hands fixedly mounted on the fastening screw rods. The pipeline is located between the two clamping plates, and the clamping plates clamp the pipeline.

[0010] Optionally, the spacing adjustment mechanism includes a bidirectional screw rod provided on two mounting bases. The two mounting bases are threadedly connected to both sides of the bidirectional screw rod, and second rotating hands are fixedly mounted at both ends of the bidirectional screw rod.

[0011] Optionally, the linkage mechanism includes a synchronous belt and a tensioning component, and the tensioning component controls the synchronous belt to always be in a tensioned state.

[0012] Optionally, the tensioning component includes two support plates fixedly mounted on two mounting bases, a connecting plate fixedly mounted on the support plates, a plurality of telescopic rods fixedly mounted on the connecting plate, a connecting block fixedly mounted on the plurality of telescopic rods. A spring is fixedly mounted on the connecting plate, the other end of the spring is fixedly connected to the connecting block, and a tensioning wheel is rotatably mounted on the connecting block.

[0013] Optionally, the linkage mechanism further includes a belt pulley fixedly mounted on the fastening screw rod, and the synchronous belt is sleeved on two belt pulleys and a tensioning wheel located on the same horizontal plane.

[0014] Optionally, two sliding rods are slidably mounted on the two mounting bases, and the sliding rods guide the two mounting bases.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] When the centering operation is completed and the spacing between the two pipelines needs to be adjusted, rotating the second rotating hand drives the bidirectional screw rod to rotate, which can make the two mounting bases approach or move away from each other, and then drive the clamping plates on both sides to move. The pipelines can be driven to move through the friction force between the clamping plates and the pipelines. Therefore, after the two pipelines are centered, the spacing between the two pipelines can still be quickly adjusted, which can effectively improve work efficiency and reduce work labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structural schematic diagram of an embodiment of the utility model is given;

[0018] Figure 2 The structural schematic diagram of the side of the utility model is given;

[0019] Figure 3 The structural schematic diagram of the back of the utility model is given;

[0020] Figure 4Provide a schematic structural view of the front of the utility model;

[0021] Figure 5 Provide the utility model Figure 1 A partial enlarged view of the position A in it.

[0022] Reference numerals: 1, mounting seat; 2, bidirectional lead screw; 201, second rotating handle; 202, slide bar; 3, fastening lead screw; 301, clamping plate; 302, first rotating handle; 4, pipeline; 5, belt pulley; 501, support plate; 502, connecting plate; 503, telescopic rod; 504, connecting block; 505, spring; 506, tension pulley; 507, synchronous belt. Specific implementation manners

[0023] The technical solution of the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Embodiment

[0025] As Figure 1-2 shown, a pipe welding centering tool proposed by the utility model includes two mounting seats 1. A centering component is installed on the mounting seats 1. A pipeline 4 is clamped on the centering component and its center is positioned. The centering component includes fastening lead screws 3 threadedly connected to the upper and lower sides of the mounting seats 1, clamping plates 301 rotatably installed on the fastening lead screws 3, and first rotating handles 302 fixedly installed on the fastening lead screws 3. The pipeline 4 is located between the two clamping plates 301, and the clamping plates 301 clamp the pipeline 4. During use, the two clamping plates 301 on the left and right are respectively placed on the two pipelines 4, and the pipeline 4 is located between the upper and lower clamping plates 301. Then, the fastening lead screws 3 on the upper and lower sides are rotated to drive the clamping plates 301 to move towards the pipeline 4, so that the upper and lower clamping plates 301 are in contact with the pipeline 4 and push the pipeline 4 to move. Since the clamping plates 301 on the two mounting seats 1 move synchronously, the final moving positions of the two clamping plates 301 on the two mounting seats 1 are the same, so that the final positions of the two pipelines 4 are the same, thus completing the centering work of the two pipelines 4, and the pipeline 4 is clamped and fixed by the clamping plates 301 to prevent the two pipelines 4 from moving, facilitating subsequent welding work.

[0026] As Figure 2-4As shown in the figure, a spacing adjustment mechanism is installed on two mounting seats 1, and the spacing adjustment mechanism adjusts the spacing between two pipes. The spacing adjustment mechanism includes a bidirectional lead screw 2 provided on the two mounting seats 1. The two mounting seats 1 are threadedly connected to both sides of the bidirectional lead screw 2, and second rotating hands 201 are fixedly installed at both ends of the bidirectional lead screw 2. Two slide bars 202 are slidably installed on the two mounting seats 1, and the slide bars 202 guide the two mounting seats 1. After the centering operation is completed, when the spacing between the two pipes 4 needs to be measured and adjusted, rotate the second rotating hand 201 to drive the bidirectional lead screw 2 to rotate, which can make the two mounting seats 1 approach or move away from each other, and then drive the clamping plates 301 on both sides to move. The pipes can be driven to move through the frictional force between the clamping plates 301 and the pipes 4. Therefore, after the two pipes 4 are centered, the spacing between the two pipes 4 can still be quickly adjusted, which can effectively improve work efficiency and reduce the workload.

[0027] As Figure 1 and Figure 5 shown in the figure, a linkage mechanism is installed on two centering components located on different mounting seats 1, and the linkage mechanism controls the centering components of the two mounting seats 1 to clamp the pipes simultaneously. The linkage mechanism includes a synchronous belt 507 and a tensioning component, and the tensioning component controls the synchronous belt 507 to be always in a tensioned state. The two fastening lead screws 3 on both sides are driven by the synchronous belt 507, so that the fastening lead screws 3 on the left and right sides can move synchronously. When the two mounting seats 1 approach or move away from each other, the synchronous belt 507 will contract or be stretched. The tensioning component keeps the synchronous belt 507 always in a taut state, which can ensure that when the spacing between the two pipes 4 is adjusted, the fastening lead screws 3 on both sides can always rotate synchronously.

[0028] Among them, the tensioning assembly includes two support plates 501 fixedly installed on two mounting seats 1, a connecting plate 502 fixedly installed on the support plates 501, a plurality of telescopic rods 503 fixedly installed on the connecting plate 502, and a connecting block 504 fixedly installed on the plurality of telescopic rods 503. A spring 505 is fixedly installed on the connecting plate 502, and the other end of the spring 505 is fixedly connected to the connecting block 504. A tensioning wheel 506 is rotatably installed on the connecting block 504. The linkage mechanism further includes a belt pulley 5 fixedly installed on the fastening screw rod 3. A synchronous belt 507 is sleeved on two belt pulleys 5 and a tensioning wheel 506 located on the same horizontal plane. When the two mounting seats 1 approach each other, the spring will pull the connecting block 504 to move towards the connecting plate 502, thereby driving the synchronous belt 507 to move, so as to stretch the synchronous belt 507 and make the synchronous belt in a tensioned state. When the two mounting seats 1 move away from each other, the synchronous belt will drive the tensioning wheel 506 to move away from the connecting plate 502, so that the synchronous belt 507 can extend along with the mounting seats 1 on both sides, ensuring that the synchronous belt 507 can always maintain a tensioned state.

[0029] Working principle: During use, place the two clamping plates 301 on the left and right sides on two pipes 4 respectively, and make the pipe 4 located between the upper and lower clamping plates 301. Then rotate the fastening screw rods 3 on the upper and lower sides. The two fastening screw rods 3 on both sides are driven by the synchronous belt 507, so that the fastening screw rods 3 on the left and right sides can move synchronously. Drive the clamping plates 301 to move towards the pipe 4 to complete the centering work of the two pipes 4. When the centering operation is completed and the distance between the two pipes 4 needs to be measured and adjusted, rotate the second rotating handle 201 to drive the bidirectional screw rod 2 to rotate, which can make the two mounting seats 1 approach or move away from each other, and then drive the clamping plates 301 on both sides to move. Through the friction force between the clamping plates 301 and the pipes 4, the pipes can be driven to move. Therefore, after the two pipes 4 are centered, the distance between the two pipes 4 can still be quickly adjusted, effectively improving work efficiency and reducing labor intensity. When the two mounting seats 1 approach or move away from each other, the synchronous belt 507 will contract or be stretched. Through the tensioning assembly, the synchronous belt 507 is always in a taut state, ensuring that when the distance between the two pipes 4 is adjusted, the fastening screw rods 3 on both sides can always rotate synchronously.

[0030] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A pipe welding alignment tool, comprising a mounting base (1), characterized in that, It further includes: There are two mounting seats (1), and a centering component is mounted on the mounting seat (1). The centering component clamps a pipeline (4) and positions the center of the pipeline (4). A linkage mechanism is mounted on the centering components on two different mounting seats (1). The linkage mechanism controls the centering components on the two mounting seats (1) to clamp the pipeline simultaneously. A spacing adjusting mechanism is mounted on the two mounting seats (1). The spacing adjusting mechanism adjusts the spacing between the two pipelines.

2. The pipe welding alignment tool according to claim 1, characterized in that, The centering component includes fastening lead screws (3) threadedly connected to the upper and lower sides of the mounting seat (1), clamping plates (301) rotatably mounted on the fastening lead screws (3), and first turning hands (302) fixedly mounted on the fastening lead screws (3). The pipeline (4) is located between the two clamping plates (301), and the clamping plates (301) clamp the pipeline (4).

3. The pipe welding alignment tool according to claim 2, characterized in that The spacing adjusting mechanism includes a bidirectional lead screw (2) provided on the two mounting seats (1). The two mounting seats (1) are threadedly connected to both sides of the bidirectional lead screw (2), and second turning hands (201) are fixedly mounted at both ends of the bidirectional lead screw (2).

4. The pipe welding alignment tool according to claim 2, characterized in that, The linkage mechanism includes a synchronous belt (507) and a tensioning component. The tensioning component controls the synchronous belt (507) to always be in a tensioned state.

5. The pipe welding alignment tool according to claim 4, characterized in that, The tensioning component includes two support plates (501) fixedly mounted on the two mounting seats (1), a connecting plate (502) fixedly mounted on the support plates (501), a plurality of telescopic rods (503) fixedly mounted on the connecting plate (502), a connecting block (504) fixedly mounted on the plurality of telescopic rods (503). A spring (505) is fixedly mounted on the connecting plate (502), the other end of the spring (505) is fixedly connected to the connecting block (504), and a tensioning pulley (506) is rotatably mounted on the connecting block (504).

6. The pipe welding alignment tool according to claim 5, characterized in that The linkage mechanism further includes pulleys (5) fixedly mounted on the fastening lead screws (3). The synchronous belt (507) is sleeved on two pulleys (5) and a tensioning pulley (506) on the same horizontal plane.

7. The pipe welding alignment tool according to claim 3, characterized in that, Two sliding rods (202) are slidably mounted on the two mounting seats (1). The sliding rods (202) guide the two mounting seats (1).

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