Positioning structure for pipeline welding

Abstract

The utility model relates to the technical field of pipeline positioning, and discloses a positioning structure for pipeline welding, which comprises a hydraulic cylinder, the outer part of the hydraulic cylinder is fixedly connected with a fixing assembly for fixing subsequent parts, the outer part of the fixing assembly is rotatably connected with a plurality of movable blocks, the outer parts of the movable blocks are fixedly connected with movable columns, and the movable columns are fixedly connected with the hydraulic cylinder. A sliding sleeve is fixedly connected to the outer portion of the movable block, a sliding piece is slidably connected to the inner wall of the sliding sleeve, a sliding column is fixedly connected to the outer portion of the sliding piece, the sliding sleeve is sleeved with a spring, and the end, away from the sliding piece, of the sliding column is fixedly connected with an ejector block. According to the pipeline welding device, the sliding columns are connected with the sliding pieces to slide in the sliding sleeves, the sliding columns are prevented from excessively leaving the interiors of the sliding sleeves, the limiting purpose is achieved, meanwhile, excessive extension of the springs is protected, the stability of pipeline welding is enhanced, and meanwhile the pipeline welding device can be used for welding pipelines with various radians.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline positioning technical field especially, relates to a positioning structure for pipeline welding. BACKGROUND

[0002] The pipeline welding positioning structure is a device for fixing the position of the pipeline during welding. It can ensure the accurate butt joint of the interfaces of two pipelines, so that the welding work can be carried out smoothly. For example, in the welding of oil pipelines, this positioning structure can resist the interference of factors such as the self-gravity of the pipeline and external stress, maintain the stability of the welding groove, and thus guarantee the welding quality, make the weld form well, and improve the precision and efficiency of welding.

[0003] The positioning device for pipeline welding is usually composed of a positioning plate, fastening bolts, adjusting nuts, etc. The positioning plate is used to determine the welding position and angle of the pipeline, and its shape is adapted to the outer wall of the pipeline; the fastening bolts can fix the positioning plate on the pipeline; and the adjusting nuts can fine-tune the position of the positioning plate. When working, the positioning structure is first installed on the pipeline to be welded, the two pipeline interfaces are precisely aligned by adjusting the positioning plate, and then fixed, so as to ensure the stability of the pipeline position during welding and improve the welding quality and efficiency.

[0004] In the prior art, some positioning devices for pipeline welding still use traditional bolts for fixing during positioning, which cannot quickly position and cannot position pipelines with various radii. When the positioning structure cannot adapt to the radius of the pipeline, the pipeline interfaces cannot be tightly and uniformly fitted, which can cause quality problems such as uneven weld width and uneven fusion depth, and even welding defects, which reduces the safety and service life of the pipeline and also slows down the work efficiency. Therefore, a positioning structure for pipeline welding is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a positioning structure for pipeline welding, which aims to improve the problem that the prior art cannot quickly position and cannot position pipelines with various radii.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A positioning structure for pipeline welding, comprising a hydraulic cylinder, a fixing assembly for fixing subsequent components is fixedly connected to the outside of the hydraulic cylinder, a plurality of movable blocks are rotatably connected to the outside of the fixing assembly, a movable column is fixedly connected to the outside of each of the plurality of movable blocks, a sliding sleeve is fixedly connected to the outside of the movable block, a sliding piece is slidably connected to the inner wall of the sliding sleeve, a sliding column is fixedly connected to the outside of the sliding piece, a spring is sleeved on the outside of the sliding sleeve, and a top block is fixedly connected to the end of the sliding column away from the sliding piece.

[0008] As a further description of the above technical solutions:

[0009] The fixing assembly comprises a plurality of fixing blocks, the inner wall of each of the plurality of fixing blocks is rotationally connected with a connecting rod, the inner wall of the connecting rod is fixedly connected with a rotating pin, and the outer part of the fixing block is fixedly connected to the outer part of the hydraulic cylinder.

[0010] As a further description of the above technical solutions:

[0011] The outer part of the rotating pin is rotationally connected with a movable rod, and the inner wall of the movable rod is slidingly connected with a connecting block.

[0012] As a further description of the above technical solutions:

[0013] The inner wall of the connecting block is fixedly connected with a fixed pin, and the outer part of the fixed pin is fixedly connected with a resistance block.

[0014] As a further description of the above technical solutions:

[0015] The inner wall of the connecting block is rotationally connected with a resistance rod, and the outer part of the resistance rod is rotationally connected with a stabilizing block.

[0016] As a further description of the above technical solutions:

[0017] The outer part of the stabilizing block is fixedly connected with a pulling block, and the outer part of the pulling block is movably connected with an extension column.

[0018] As a further description of the above technical solutions:

[0019] The outer part of the hydraulic cylinder is fixedly connected with a stabilizing column, and the outer part of the hydraulic cylinder is fixedly connected to the outer part of the pulling block.

[0020] As a further description of the above technical solutions:

[0021] The outer part of the spring is fixedly connected to the outer part of the movable block, and the end of the spring away from the movable block is fixedly connected to the outer part of the top block.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1. In the utility model, through starting hydraulic cylinder, pull the pull block to move, at this time the movable block will move upward under the action of hydraulic cylinder, when the top block contacts the inside of pipeline, the top block will adjust the angle according to the radian of pipeline inside through sliding on the surface of movable column and closely fit with the radian of pipeline inside, wherein when the top block adjusts the angle, it will pull the slide column and spring, at this time the spring will deform to give the top block enough adjustment space, and the slide column connects the sliding sheet to slide in the inside of sliding sleeve, prevents the slide column from excessively leaving the inside of sliding sleeve and plays the purpose of limiting, also protects the excessive extension of spring, enhances the stability of welding pipeline, and also has the welding of pipeline with multiple radian.

[0024] 2. In the utility model, in the process of adhering to the inside of pipeline, the connecting rod rotates outside the fixed block and rotating pin, and the movable rod rotates outside the stable block and rotating pin, lifts the movable block, and the connecting block connects the resistance rod to slide in the inside of movable rod, wherein the connecting block connects the resistance block inside, the resistance block has the effect of damping to prevent the movable block connected with the resistance rod from tilting, the pull block connects the extension column, the extension column can be expanded by connecting more pull blocks, increase more support to pipeline and can weld multiple pipelines, improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic view of the positioning structure for pipeline welding provided by the utility model;

[0026] Figure 2 It is a structure schematic view of the pull block of the positioning structure for pipeline welding provided by the utility model;

[0027] Figure 3 It is a structure schematic view of the sliding sheet of the positioning structure for pipeline welding provided by the utility model;

[0028] Figure 4 It is Figure 2 The enlarged view of A in the utility model.

[0029] Legend:

[0030] 1, hydraulic cylinder;2, fixed block;3, connecting rod;4, rotating pin;5, movable block;6, movable column;7, sliding sleeve;8, sliding sheet;9, slide column;10, spring;11, top block;12, movable rod;13, connecting block;14, fixed pin;15, resistance block;16, resistance rod;17, stable block;18, pull block;19, extension column;20, stable column. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0032] With reference to Figure 1 And Figure 4 An embodiment provided by the utility model: a positioning structure for pipeline welding, comprising a hydraulic cylinder 1, the hydraulic cylinder 1 is used as the power source of the whole positioning structure to realize accurate positioning when welding the pipeline. A plurality of fixed blocks 2 are fixedly connected to the outside of the hydraulic cylinder 1, which can be stably connected to the hydraulic cylinder 1, ensuring that the hydraulic cylinder 1 can stably function when working and will not be loose. The fixed assembly comprises a plurality of fixed blocks 2, which are uniformly distributed on the outside of the hydraulic cylinder 1 and play the role of dispersing stress and stable connection. The inner wall of the plurality of fixed blocks 2 is rotatably connected with a connecting rod 3, which can rotate flexibly around the connecting point in the fixed block 2, facilitating the adjustment of the position according to the curvature inside the pipeline. The inner wall of the connecting rod 3 is fixedly connected with a rotating pin 4, which provides a key support point for the rotation of the connecting rod 3 and ensures the smoothness of the rotation. The outside of the fixed block 2 is fixedly connected to the outside of the hydraulic cylinder 1, so that the whole fixed assembly and the hydraulic cylinder 1 are closely combined into an integral structure.

[0033] A plurality of movable blocks 5 are rotatably connected to the outside of the rotating pin 4. The movable blocks 5 can rotate around the connecting point of the fixed assembly. In this way, the movable blocks 5 can change the angle according to the actual situation when the whole structure is working, so as to better adapt to different conditions inside the pipeline. The outside of the plurality of movable blocks 5 is fixedly connected with a movable column 6, which assists the movable blocks 5 in adjusting the relative position. The movable column 6 is movably connected with a top block 11, and the top block 11 connected with the movable column 6 can closely fit the curvature inside the pipeline to provide corresponding basic conditions for the operation.

[0034] With reference to Figures 3-4 The outside of the movable block 5 is fixedly connected with a sliding sleeve 7, which plays the role of bearing and guiding. The inner wall of the sliding sleeve 7 is slidably connected with a sliding sheet 8, which can cooperate with the sliding sheet 8 to move along a specific trajectory. The sliding sheet 8 can smoothly slide on the inner wall of the sliding sleeve 7, so as to realize the corresponding linkage effect. The outside of the sliding sheet 8 is fixedly connected with a sliding column 9, which will move with the sliding of the sliding sheet 8, and then transmit the related force and displacement change. The outside of the sliding sleeve 7 is sleeved with a spring 10, which plays an important role in buffering and providing deformation space in this structure, and can cope with the force change between the movable block 5 and the top block 11.

[0035] The top block 11 is directly in contact with the inside of the pipeline, and its shape and material are adapted to the fitting requirements of the inside of the pipeline. The top block 11 realizes close contact with the inner wall of the pipeline, and guarantees the accurate positioning of the pipeline during welding. The outer part of the spring 10 is fixedly connected to the outer part of the movable block 5, so that one end of the spring 10 is stable. The other end of the spring 10 is fixedly connected to the outer part of the top block 11, so that the spring 10 can deform correspondingly when the top block 11 changes in force, thereby playing a buffering and auxiliary adjusting role.

[0036] Referring to Figure 4 , the outer part of the rotating pin 4 is rotatably connected with the movable rod 12. The movable rod 12 is rotatably supported by the rotating pin 4, and can flexibly change the angle and position. The movable rod 12 has a connecting block 13 rotatably connected to the inner wall of the movable rod 12. The connecting block 13 can slide in the movable rod 12, and dynamically adjusts the relative position of the connecting block 13 in the movable rod 12, so as to adapt to various changes during pipeline welding positioning.

[0037] The inner wall of the connecting block 13 is fixedly connected with a fixed pin 14. The fixed pin 14 can make the connection of the related parts in the connecting block 13 more stable, and guarantee the reliability of the overall structure. The outer part of the fixed pin 14 is fixedly connected with a resistance block 15. The resistance block 15 has a damping effect, which can effectively prevent the movable block 5 connected with the resistance rod 16 from tilting during operation, so that the top block 11 runs more stably, and guarantees the accuracy of the positioning of the pipeline.

[0038] Referring to Figure 2 and Figure 4 , the inner wall of the connecting block 13 is rotatably connected with the resistance rod 16. The resistance rod 16 can change the direction and size of the force by rotating in the connecting block 13, and better cooperate with the spring 10 to complete the control action of the movable block 5. The outer part of the resistance rod 16 is rotatably connected with a stabilizing block 17. The stabilizing block 17 provides stable support for the rotation of the resistance rod 16, and ensures that it will not abnormally shake during rotation. The outer part of the stabilizing block 17 is fixedly connected with a pulling block 18. The pulling block 18 is an important part connected with the hydraulic cylinder 1, and is an important node of force transmission of the whole structure. It can better conduct the force exerted by the hydraulic cylinder 1, and provide a stable support for the movable rod 12. The outer part of the pulling block 18 is movably connected with an extension column 19. The extension column 19 is expanded by connecting more pulling blocks 18, which can increase the support for more pipelines and perform welding on multiple pipelines at the same time, thereby improving the work efficiency. This makes the positioning structure have better applicability when facing multiple pipeline welding tasks or needing more support.

[0039] Referring to Figure 1 Figure 1The hydraulic cylinder 1 is fixedly connected with the stabilizing column 20 outside, the stabilizing column 20 can enhance the stability of the hydraulic cylinder 1 during work, prevents unnecessary shaking and the like, meanwhile, pulleys are arranged outside the stabilizing column 20, when the hydraulic cylinder 1 is not started to work, the pulleys can better and quickly reach the welding position, guarantee reliable operation of the whole positioning structure, the hydraulic cylinder 1 is fixedly connected outside the pull block 18, further tightly links all parts together, so that the whole structure is more smooth and efficient in force transmission and action coordination.

[0040] Working principle: the hydraulic cylinder 1 is started, the pull block 18 is pulled to move, at this time, the movable block 5 is moved upwards under the action of the hydraulic cylinder 1, when the top block 11 contacts the inside of the pipeline, the top block 11 is adjusted to the angle conforming to the inside of the pipeline according to the arc of the pipeline by sliding on the surface of the movable column 6, and is closely attached, wherein when the top block 11 adjusts the angle, the slide column 9 and the spring 10 are pulled, at this time, the spring 10 is deformed to give the top block 11 enough adjustment space, the slide column 9 is connected with the sliding sheet 8 to slide in the inside of the sliding sleeve 7, prevents the slide column 9 from excessively leaving the inside of the sliding sleeve 7, plays a limiting purpose, meanwhile, also protects the excessive extension of the spring 10, enhances the stability of welding the pipeline, and also has the function of welding the pipeline with various arcs.

[0041] In the process of attaching the inside of the pipeline, the connecting rod 3 rotates outside the fixed block 2 and the rotating pin 4, and the movable rod 12 rotates outside the stabilizing block 17 and the rotating pin 4, lifts the movable block 5, and the connecting block 13 is connected with the blocking rod 16 to slide in the inside of the movable rod 12, wherein the connecting block 13 is connected with the resistance block 15 inside, the resistance block 15 has a damping effect, prevents the movable block 5 connected with the blocking rod 16 from tilting, the pull block 18 is connected with the extension column 19, the extension column 19 is expanded by connecting more pull blocks 18, increases more support for the pipeline, and can weld multiple pipelines, improves work efficiency.

[0042] Finally, it should be noted that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement and the like within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A positioning structure for pipe welding, comprising a hydraulic cylinder (1), characterized in that: The hydraulic cylinder (1) is externally fixedly connected to a fixing assembly for fixing subsequent components. Multiple movable blocks (5) are rotatably connected to the outside of the fixing assembly. Movable columns (6) are fixedly connected to the outside of each of the multiple movable blocks (5). A sliding sleeve (7) is fixedly connected to the outside of the movable block (5). A sliding plate (8) is slidably connected to the inner wall of the sliding sleeve (7). A sliding column (9) is fixedly connected to the outside of the sliding plate (8). A spring (10) is sleeved on the outside of the sliding sleeve (7). A top block (11) is fixedly connected to the end of the sliding column (9) away from the sliding plate (8).

2. The positioning structure for pipe welding according to claim 1, characterized in that: The fixing assembly includes multiple fixing blocks (2), and the inner walls of the multiple fixing blocks (2) are rotatably connected to connecting rods (3). The inner walls of the connecting rods (3) are fixedly connected to rotating pins (4), and the outer sides of the fixing blocks (2) are fixedly connected to the outside of the hydraulic cylinder (1).

3. The positioning structure for pipe welding according to claim 2, characterized in that: The rotating pin (4) is rotatably connected to a movable rod (12), and the inner wall of the movable rod (12) is slidably connected to a connecting block (13).

4. A positioning structure for pipe welding according to claim 3, characterized in that: The inner wall of the connecting block (13) is fixedly connected to a fixing pin (14), and the outside of the fixing pin (14) is fixedly connected to a resistance block (15).

5. A positioning structure for pipe welding according to claim 3, characterized in that: The inner wall of the connecting block (13) is rotatably connected to a stop rod (16), and the outside of the stop rod (16) is rotatably connected to a stabilizing block (17).

6. A positioning structure for pipe welding according to claim 5, characterized in that: The stabilizing block (17) is externally fixedly connected to a pull block (18), and the pull block (18) is externally movably connected to an extension column (19).

7. A positioning structure for pipe welding according to claim 6, characterized in that: The hydraulic cylinder (1) is externally fixedly connected to a stabilizing column (20), and the hydraulic cylinder (1) is externally fixedly connected to the outside of the pull block (18).

8. A positioning structure for pipe welding according to claim 1, characterized in that: The spring (10) is fixedly connected to the outside of the movable block (5), and the end of the spring (10) away from the movable block (5) is fixedly connected to the outside of the top block (11).

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