A sizing tool for large diameter submerged arc welded pipe

Abstract

The utility model discloses a kind of large-diameter submerged-arc welded pipe sizing tool, including rack, sizing mechanism is provided on the rack, the sizing mechanism is used to size welding pipe, the inlet end of the rack is provided with guide mechanism, the guide mechanism is used to guide welding pipe to enter sizing mechanism, the sizing mechanism includes upper sizing assembly and lower sizing assembly, upper sizing assembly and lower sizing assembly are oppositely arranged, upper sizing assembly includes positioning rod and compression rod, both ends of the positioning rod are movably installed on the rack, locking mechanism is provided on the side of the positioning rod, the compression rod is installed in the middle of positioning rod, the compression rod is connected with positioning rod by screw thread, the bottom of the positioning rod is installed with upper sizing plate, and the upper sizing plate is movably connected between positioning rod. The whole tool structure of the utility model is simple, convenient to operate, and greatly improves the sizing efficiency and sizing quality of large-diameter submerged-arc welded pipe.

Description

Technical Field

[0001] This utility model relates to the field of sizing tooling technology, specifically a sizing tooling for large-diameter submerged arc welded pipes. Background Technology

[0002] In the production process of large-diameter submerged arc welded pipes, sizing is a crucial step, directly affecting the dimensional accuracy and performance of the pipes. Large-diameter submerged arc welded pipes are widely used in fields such as petroleum, natural gas, and water conservancy, where extremely high dimensional accuracy is required. Currently used sizing fixtures often exhibit insufficient sizing accuracy during the sizing process. This is mainly due to the inadequate structural design of existing sizing mechanisms, leading to inconsistent dimensional accuracy across different parts of the welded pipe. Utility Model Content

[0003] The purpose of this utility model is to provide a sizing tool for large-diameter submerged arc welded pipes to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sizing fixture for large-diameter submerged arc welded pipes, comprising a frame, a sizing mechanism mounted on the frame for sizing the welded pipe, a guide mechanism at the inlet end of the frame for guiding the welded pipe into the sizing mechanism, the sizing mechanism comprising an upper sizing assembly and a lower sizing assembly, the upper and lower sizing assemblies being arranged opposite each other, the upper sizing assembly comprising a positioning rod and a clamping rod, the two ends of the positioning rod being movably mounted on the frame, a locking mechanism being provided on one side of the positioning rod, the clamping rod being mounted in the middle of the positioning rod and threadedly connected to the positioning rod, an upper sizing plate being mounted at the bottom of the positioning rod and movably connected to the positioning rod, the lower sizing assembly comprising a lower sizing plate and a support rod, the lower sizing plate being movably connected between the support rods, and the bottom of the support rod being mounted on the base of the frame.

[0005] Preferably, the upper sizing plate and the lower sizing plate have a semi-circular arc structure, and two sets of large-diameter submerged arc welded pipes to be connected are installed between the upper sizing plate and the lower sizing plate.

[0006] Preferably, the guiding mechanism includes a left guide plate and a right guide plate, which are symmetrically arranged on both sides of the frame entrance end, and the left guide plate and the right guide plate are funnel-shaped guiding channels.

[0007] Preferably, hydraulic rods are installed on the inner sides of the left and right guide plates, the bottom of the hydraulic rods is fixedly connected to the base of the frame, and a support block is fixedly installed on the top of the hydraulic rods.

[0008] Preferably, the upper surface of the support block is provided with a semi-circular arc transmission groove, and a transmission roller is installed inside the transmission groove. The two ends of the transmission roller are rotatably connected to the support block, and a handwheel is connected to one end of the transmission roller. The handwheel is connected to the transmission roller in a transmission connection.

[0009] Preferably, a handle is mounted on the top of the clamping rod.

[0010] Preferably, the locking mechanism includes a locking block, a spring, and a handle. The locking block is movably installed inside the positioning rod. One end of the locking block is connected to the handle, and the other end is inserted into the frame. The spring is sleeved in the middle of the handle.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model achieves precise sizing of large-diameter submerged arc welded pipes through the upper and lower sizing components of the sizing mechanism. The upper sizing component can flexibly adjust the position of the upper sizing plate through the cooperation of the positioning rod and the clamping rod, ensuring that the gap between it and the lower sizing plate meets the size requirements of the welded pipe.

[0013] 2. This utility model uses a guiding mechanism to effectively guide the welded pipe before it enters the sizing mechanism, avoiding the problem of insufficient sizing accuracy caused by the deviation of the welded pipe. The guiding mechanism includes a left guide plate and a right guide plate. These two guide plates are designed in a trumpet shape, which can not only guide the welded pipe to enter the sizing mechanism smoothly, but also pre-align the welded pipe to a certain extent, laying a good foundation for subsequent accurate sizing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the side structure of the support block of this utility model;

[0016] Figure 3 This is a side view of the upper and lower sizing components of this utility model.

[0017] Figure 4 This utility model Figure 1 Schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Frame; 2. Sizing mechanism; 3. Upper sizing assembly; 4. Guide mechanism; 5. Lower sizing assembly; 6. Positioning rod; 7. Clamping rod; 8. Locking mechanism; 9. Upper sizing plate; 10. Lower sizing plate; 11. Support rod; 12. Large-diameter submerged arc welded pipe; 13. Left guide plate; 14. Right guide plate; 15. Hydraulic rod; 16. Support block; 17. Transmission groove; 18. Transmission roller; 19. Handwheel; 20. Handle lever; 21. Locking block; 22. Spring; 23. Handle. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a sizing fixture solution for large-diameter submerged arc welded pipes: It includes a frame 1, on which a sizing mechanism 2 is mounted. The sizing mechanism 2 is used to sizing the welded pipe. A guide mechanism 4 is provided at the inlet end of the frame 1 to guide the welded pipe into the sizing mechanism 2. The sizing mechanism 2 includes an upper sizing component 3 and a lower sizing component 5, which are arranged vertically opposite to each other. The upper sizing component 3 includes a positioning rod 6 and a clamping rod 7. The two ends of the positioning rod 6 are movably mounted on the frame 1. A locking mechanism 8 is provided on one side of the positioning rod 6. The clamping rod 7 is installed in the middle of the positioning rod 6 and is threadedly connected to the positioning rod 6. An upper sizing plate 9 is installed at the bottom of the positioning rod 6 and is movably connected to the positioning rod 6. The lower sizing assembly 5 includes a lower sizing plate 10 and a support rod 11. The lower sizing plate 10 is movably connected to the support rod 11, and the bottom of the support rod 11 is mounted on the base of the frame 1.

[0021] Furthermore, the upper sizing plate 9 and the lower sizing plate 10 are semi-circular arc structures, and two sets of large-diameter submerged arc welded pipes 12 to be connected are installed between the upper sizing plate 9 and the lower sizing plate 10.

[0022] Furthermore, the guiding mechanism 4 includes a left guide plate 13 and a right guide plate 14, which are symmetrically arranged on both sides of the entrance end of the frame 1. The left guide plate 13 and the right guide plate 14 are funnel-shaped guiding channels.

[0023] In this embodiment, the flared design of the left guide plate 13 and the right guide plate 14 helps the welded pipe enter the sizing mechanism 2 smoothly and accurately.

[0024] Furthermore, hydraulic rods 15 are installed on the inner sides of the left guide plate 13 and the right guide plate 14. The bottom of the hydraulic rods 15 is fixedly connected to the base of the frame 1, and a support block 16 is fixedly installed on the top of the hydraulic rods 15.

[0025] Furthermore, a semi-circular arc transmission groove 17 is provided on the upper surface of the support block 16, and a transmission roller 18 is installed inside the transmission groove 17. The two ends of the transmission roller 18 are rotatably connected to the support block 16, and a handwheel 19 is connected to one end of the transmission roller 18. The handwheel 19 is connected to the transmission roller 18 in a transmission connection.

[0026] In this embodiment, by rotating the handwheel 19, the transmission roller 18 can be driven to roll in the semi-circular arc transmission groove 17, thereby adjusting the position of the large-diameter submerged arc welded pipe 12.

[0027] Furthermore, a handle lever 20 is mounted on the top of the clamping rod 7.

[0028] In this embodiment, the handle rod 20 is designed to facilitate the operator to apply force, so that the clamping rod 7 can easily and stably clamp the large-diameter submerged arc welded pipe 12.

[0029] Furthermore, the locking mechanism 8 includes a locking block 21, a spring 22, and a handle 23. The locking block 21 is movably installed inside the positioning rod 6. One end of the locking block 21 is connected to the handle 23, and the other end is inserted into the frame 1. The spring 22 is sleeved in the middle position of the handle 23.

[0030] In this embodiment, when it is necessary to fix the position of the positioning rod 6, the operator can pull the handle 23, which moves the locking block 21 and compresses the spring 22, causing one end of the locking block 21 to be pulled out from the frame 1. At this time, the position of the positioning rod 6 can be adjusted. After adjusting to the appropriate position, the handle 23 is released, and the elastic force of the spring 22 pushes the locking block 21 to reset, causing one end of the locking block 21 to be reinserted into the frame 1, thereby locking the position of the positioning rod 6.

[0031] Working Principle: During use, the large-diameter submerged arc welded pipe to be sized is guided by the left guide plate 13 and right guide plate 14 of the guide mechanism 4, and the welded pipe enters the sizing mechanism 2 along the trumpet-shaped guide channel. By rotating the handwheel 19, the handwheel 19 drives the transmission roller 18 to rotate in the semi-circular arc transmission groove 17, thereby adjusting the position of the large-diameter submerged arc welded pipe 12. After the welded pipe enters the sizing mechanism 2, the upper sizing assembly 3 and the lower sizing assembly 5 clamp and sizing the welded pipe. The positioning rod 6 is initially fixed by adjusting its position on the frame 1, and then fixed by the locking mechanism 8. Then, the distance between the upper sizing plate 9 and the lower sizing plate 10 is adjusted by rotating the clamping rod 7 to accommodate welded pipes of different diameters. The threaded connection design of the clamping rod 7 makes the adjustment process more precise and stable. During the sizing process, the semi-circular arc structure of the upper sizing plate 9 and the lower sizing plate 10 can evenly clamp the welded pipe, ensuring the dimensional accuracy of the welded pipe.

[0032] 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.

[0033] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sizing fixture for large-diameter submerged arc welded pipes, comprising a frame (1), characterized in that: A sizing mechanism (2) is provided on the frame (1) for sizing the welded pipe. A guide mechanism (4) is provided at the inlet end of the frame (1) for guiding the welded pipe into the sizing mechanism (2). The sizing mechanism (2) includes an upper sizing assembly (3) and a lower sizing assembly (5), which are arranged opposite each other. The upper sizing assembly (3) includes a positioning rod (6) and a clamping rod (7). The two ends of the positioning rod (6) are movably mounted on the frame (1). A locking mechanism (8) is provided on one side of the positioning rod (6). The clamping rod (7) is installed in the middle of the positioning rod (6). The clamping rod (7) is threadedly connected to the positioning rod (6). An upper sizing plate (9) is installed at the bottom of the positioning rod (6). The upper sizing plate (9) is movably connected to the positioning rod (6). The lower sizing assembly (5) includes a lower sizing plate (10) and a support rod (11). The lower sizing plate (10) is movably connected between the support rod (11). The bottom of the support rod (11) is installed on the base of the frame (1).

2. The sizing fixture for large-diameter submerged arc welded pipes according to claim 1, characterized in that, The upper sizing plate (9) and the lower sizing plate (10) are semi-circular arc structures, and two sets of large-diameter submerged arc welded pipes (12) to be connected are installed between the upper sizing plate (9) and the lower sizing plate (10).

3. The sizing fixture for large-diameter submerged arc welded pipes according to claim 2, characterized in that, The guiding mechanism (4) includes a left guide plate (13) and a right guide plate (14). The left guide plate (13) and the right guide plate (14) are symmetrically arranged on both sides of the entrance end of the frame (1). The left guide plate (13) and the right guide plate (14) are horn-shaped guiding channels.

4. The sizing fixture for large-diameter submerged arc welded pipes according to claim 3, characterized in that, Hydraulic rods (15) are installed on the inner sides of the left guide plate (13) and the right guide plate (14). The bottom of the hydraulic rods (15) is fixedly connected to the base of the frame (1), and a support block (16) is fixedly installed on the top of the hydraulic rods (15).

5. The sizing fixture for large-diameter submerged arc welded pipes according to claim 4, characterized in that, The upper surface of the support block (16) is provided with a semi-circular arc transmission groove (17), and a transmission roller (18) is installed inside the transmission groove (17). The two ends of the transmission roller (18) are rotatably connected to the support block (16), and a handwheel (19) is connected to one end of the transmission roller (18). The handwheel (19) is connected to the transmission roller (18) in a transmission connection.

6. The sizing fixture for large-diameter submerged arc welded pipes according to claim 5, characterized in that, A handle (20) is mounted on the top of the clamping rod (7).

7. A sizing fixture for large-diameter submerged arc welded pipes according to claim 6, characterized in that, The locking mechanism (8) includes a locking block (21), a spring (22) and a handle (23). The locking block (21) is movably installed inside the positioning rod (6). One end of the locking block (21) is connected to the handle (23), and the other end is inserted into the frame (1). The spring (22) is sleeved in the middle position of the handle (23).

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