A positioning structure for butt welding of circular tube columns in multi-size steel structures
By designing a positioning structure suitable for butt welding of multi-sized steel circular tube columns, and utilizing innovative designs of disassembly and telescopic components, the problem of complex disassembly and assembly of existing devices has been solved, improving operational efficiency and positioning accuracy, and facilitating on-site adjustment and transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR THIRD BUREAU GRP (HAINAN) CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-03
AI Technical Summary
Existing cylindrical column positioning devices are complex to assemble and disassemble, consuming time and manpower. They are inefficient, especially when frequently adjusted and moved on-site, and are not conducive to transportation and storage.
A multi-size steel structure circular tube column butt welding positioning structure was designed, including an upper steel column, a lower steel column, a fixing mechanism, and an adjustment mechanism. The structure can quickly lock and unlock by disassembling components and telescopic components. Combined with limit telescopic rods and threaded hole adjustment, it can adapt to different size and height requirements.
It significantly improves operational efficiency, simplifies disassembly and installation processes, reduces manpower and material consumption, facilitates on-site adjustment, transportation and storage, and ensures the accuracy of welding positioning.
Smart Images

Figure CN224445134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel structure welding technology, specifically to a positioning structure suitable for butt welding of multi-sized steel structure round pipe columns. Background Technology
[0002] With the continuous development of the construction and industrial manufacturing sectors, steel structures are widely used in various buildings, bridges, towers, and other projects due to their advantages such as high strength, light weight, and good seismic performance. As an important component of steel structures, circular tubular columns require effective positioning before the welding process.
[0003] When implementing the positioning solution, the applicant found that the existing circular tube column positioning devices are generally complicated to disassemble and assemble, which consumes a lot of time and manpower. Especially when the device is frequently adjusted and moved on site, the inefficient operation process restricts the construction progress. At the same time, the complex structure is not conducive to transportation and storage, which increases the consumption of manpower and material resources during non-working hours. Based on this, this utility model designs a positioning structure suitable for butt welding of multi-size steel structure circular tube columns to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a positioning structure for butt welding of multi-sized steel structure round tube columns, which solves the problem of inconvenient disassembly in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A positioning structure for butt welding of circular steel tube columns of various sizes, comprising:
[0007] An upper section steel column, with a lower section steel column provided at the bottom of the upper section steel column;
[0008] A fixing mechanism is located on the outer ring of the upper and lower steel columns and positions the upper and lower steel columns respectively.
[0009] An adjustment mechanism is provided, which is located between fixed mechanisms and is used to adjust the distance between the fixed mechanisms. The adjustment mechanism includes a disassembly component and a telescopic component. The disassembly component is located inside the fixed mechanism and is used to disassemble and install the telescopic component. The telescopic component is located between the disassembly components and is used to adjust the distance between the fixed mechanisms.
[0010] Preferably, the fixing mechanism includes a semi-circular frame installed on the outer ring of the upper and lower steel columns, the semi-circular frames being hinged together, and a rotating component being installed inside the semi-circular frame.
[0011] Preferably, the rotating assembly includes a rotating screw threaded inside the semi-circular frame, a rotating handle is installed on one side of the rotating screw, and multiple sets of rotating screws and rotating handles are provided and symmetrically distributed. A semi-circular ring is installed on the side of the rotating screw near the upper and lower steel columns, and a limiting telescopic rod is installed between the semi-circular frame and the semi-circular ring. Multiple sets of the limiting telescopic rod are provided and symmetrically distributed.
[0012] Preferably, the disassembly assembly includes grooves formed at the bottom and top of the semi-circular frame, with slots inside the grooves and mounting frames inside the grooves. Multiple sets of mounting frames are arranged symmetrically, and compression telescopic rods are installed inside the mounting frames. Compression springs are installed on the outer rings of the compression telescopic rods. Multiple sets of compression telescopic rods and compression springs are arranged symmetrically. A compression plate is fixedly connected to one side of the compression telescopic rods and compression springs, and a locking block is fixedly connected to one side of the compression plate. The locking block slides inside the slots.
[0013] Preferably, the telescopic assembly includes a fixed rod installed at the bottom of the upper mounting frame, a sliding rod slidably connected inside the fixed rod, the bottom of the sliding rod being connected to the lower mounting frame, and threaded holes being provided inside both the fixed rod and the sliding rod, with threaded rods threadedly connected inside the threaded holes, and multiple sets of threaded holes being provided in a linear distribution.
[0014] Preferably, a mounting block is installed on one side of the semi-circular frame, and a mounting screw hole is opened on the front of the mounting block, with a mounting screw connected to the internal thread of the mounting screw hole.
[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0016] 1. This utility model significantly improves operational efficiency through the innovative design of disassembly components. The compression spring pushes the locking block into the slot, realizing the quick locking of the installation frame; while pressing the compression plate in the opposite direction can easily release the lock, which is convenient for frequent on-site adjustments and movement of the device. It is also beneficial for transportation and storage, reducing the consumption of manpower and material resources during non-working hours.
[0017] 2. This utility model features a cleverly designed telescopic component. The sliding rod slides within the fixed rod, and through the cooperation of multiple sets of linearly distributed threaded holes and threaded rods, it achieves multi-level adjustment of the distance between the upper and lower fixed mechanisms, which can meet the docking requirements of different heights and ensure the accuracy of welding positioning. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2This is a side view of the structure of this utility model;
[0020] Figure 3 This is a top view of the structure of this utility model;
[0021] Figure 4 This is a structural diagram of the fixing mechanism of this utility model;
[0022] Figure 5 This is a structural diagram of the adjustment mechanism of this utility model.
[0023] The components are: 1. Upper steel column; 2. Lower steel column; 3. Semi-circular frame; 4. Rotating screw; 5. Rotating handle; 6. Semi-circular ring; 7. Limiting telescopic rod; 8. Groove; 9. Slot; 10. Mounting frame; 11. Extrusion telescopic rod; 12. Extrusion spring; 13. Extrusion plate; 14. Locking block; 15. Fixing rod; 16. Sliding rod; 17. Threaded hole; 18. Threaded rod; 19. Mounting block; 20. Mounting screw hole; 21. Mounting screw. Detailed Implementation
[0024] 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.
[0025] Please refer to Figures 1-4 A positioning structure for butt welding of multi-size steel structure circular tube columns includes: an upper steel column 1, with a lower steel column 2 at the bottom of the upper steel column 1; a fixing mechanism located on the outer ring of the upper steel column 1 and the lower steel column 2 respectively, and positioning the upper steel column 1 and the lower steel column 2; and an adjustment mechanism located between the fixing mechanisms and used to adjust the distance between the fixing mechanisms. The adjustment mechanism includes a disassembly component and a telescopic component. The disassembly component is located inside the fixing mechanism and is used for disassembling and installing the telescopic component. The telescopic component is located between the disassembly components and is used to adjust the distance between the fixing mechanisms.
[0026] The fixing mechanism includes a semi-circular frame 3 installed on the outer ring of the upper steel column 1 and the lower steel column 2. The semi-circular frame 3 is hinged together, and a rotating assembly is installed inside the semi-circular frame 3. The rotating assembly includes a rotating screw 4 threadedly connected inside the semi-circular frame 3. A rotating handle 5 is installed on one side of the rotating screw 4. Multiple sets of rotating screws 4 and rotating handles 5 are provided and symmetrically distributed. A semi-circular ring 6 is installed on the side of the rotating screw 4 near the upper steel column 1 and the lower steel column 2. A limiting telescopic rod 7 is installed between the semi-circular frame 3 and the semi-circular ring 6. Multiple sets of limiting telescopic rods 7 are provided and symmetrically distributed.
[0027] In this embodiment of the utility model, when it is necessary to clamp the steel column, the operator drives the rotating screw 4 to push inward by rotating the rotating handle 5, thereby causing the semi-circular ring 6 to press against the surface of the steel column; during this process, the limiting telescopic rod 7 ensures the parallel movement of the semi-circular ring 6.
[0028] Please refer to Figures 1-5 The disassembly assembly includes grooves 8 formed at the bottom and top of the semi-circular frame 3. A slot 9 is formed inside the groove 8. A mounting frame 10 is set inside the groove 8, with multiple sets of symmetrically distributed mounting frames 10. A compression telescopic rod 11 is installed inside the mounting frame 10, and a compression spring 12 is installed around the outer ring of the compression telescopic rod 11. Multiple sets of compression telescopic rods 11 and compression springs 12 are formed and symmetrically distributed. A compression plate 13 is fixedly connected to one side of the compression telescopic rod 11 and compression spring 12, and a locking block 14 is fixedly connected to one side of the compression plate 13. The locking block 14 slides inside the slot 9. The telescopic assembly includes a fixed rod 15 installed at the bottom of the upper mounting frame 10. A sliding rod 16 is slidably connected inside the fixed rod 15. The bottom of the sliding rod 16 is connected to the lower mounting frame 10. Both the fixed rod 15 and the sliding rod 16 have threaded holes 17 inside. Threaded rods 18 are threadedly connected inside the threaded holes 17, with multiple sets of threaded holes 17 arranged linearly.
[0029] A mounting block 19 is installed on one side of the semi-circular frame 3. A mounting screw hole 20 is opened on the front of the mounting block 19, and a mounting screw 21 is connected to the internal thread of the mounting screw hole 20.
[0030] In this embodiment of the invention, the compression spring 12 can push the locking block 14 into the locking slot 9, thereby fixing the mounting frame 10; while by pressing the compression plate 13 in the opposite direction, the locking can be easily released, which facilitates the transportation and storage of the device.
[0031] In use, during the clamping and positioning process of the fixing mechanism, the fixing mechanism uses a symmetrically distributed semi-circular frame 3 as the main structure, which is hinged to form an openable and closable ring frame. When it is necessary to clamp the steel column, the operator drives the rotating screw 4 to push inward by rotating the rotating handle 5, thereby causing the semi-circular ring 6 to press against the surface of the steel column. In this process, the limiting telescopic rod 7 ensures the parallel movement of the semi-circular ring 6, avoiding the problem of uneven clamping caused by skew, and can adapt to steel columns of different diameters. It also achieves a uniform force effect through multiple sets of symmetrically distributed screws.
[0032] Secondly, regarding the spacing control of the adjustment mechanism, the structure achieves the spacing adjustment of the upper and lower fixing mechanisms through a telescopic component. The sliding rod 16 can slide within the fixing rod 15. The height is locked by selecting different positions of the threaded holes 17 and inserting the threaded rod 18. The linearly distributed threaded holes 17 provide multi-level adjustment accuracy. In addition, the quick disassembly and assembly function is achieved because the compression spring 12 can push the locking block 14 into the locking slot 9, thereby completing the fixing of the mounting frame 10. The locking can be easily released by pressing the compression plate 13 in the opposite direction, which facilitates the transportation and storage of the device.
[0033] Finally, the entire system operates collaboratively. In the pre-positioning stage, the upper and lower semi-circular frames 3 enclose the steel column, and the mounting blocks 19 are connected by the mounting screws 21 to form a complete ring structure. In the fine-tuning stage, rotating the handle 5 can make the semi-circular ring 6 fit tightly against the surface of the steel column, eliminating the gap between the parts. In the welding assistance stage, the adjusted positioning structure can maintain the concentricity of the steel column, while the limiting telescopic rod 7 can absorb the thermal deformation generated during the welding process. In the disassembly stage, simply loosen the rotating screw 4 and then press the pressing plate 13 to separate the components.
[0034] 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, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A positioning structure for butt welding of multi-size steel structure circular pipe columns, characterized in that, include: Upper section steel column (1), and a lower section steel column (2) is provided at the bottom of the upper section steel column (1); A fixing mechanism is located on the outer ring of the upper steel column (1) and the lower steel column (2) respectively, and positions the upper steel column (1) and the lower steel column (2); An adjustment mechanism is provided, which is located between fixed mechanisms and is used to adjust the distance between the fixed mechanisms. The adjustment mechanism includes a disassembly component and a telescopic component. The disassembly component is located inside the fixed mechanism and is used to disassemble and install the telescopic component. The telescopic component is located between the disassembly components and is used to adjust the distance between the fixed mechanisms.
2. The positioning structure for butt welding of a steel structure circular pipe column of claim 1, wherein: The fixing mechanism includes a semi-arc frame (3) installed on the outer ring of the upper section steel column (1) and the lower section steel column (2), the semi-arc frame (3) being hinged together by a hinge, and a rotating component being installed inside the semi-arc frame (3).
3. The positioning structure for butt welding of a steel structure circular pipe column of claim 2, wherein: The rotating assembly includes a rotating screw (4) threaded inside the semi-arc frame (3). A rotating handle (5) is installed on one side of the rotating screw (4). Multiple sets of rotating screws (4) and rotating handles (5) are provided and are symmetrically distributed. A semi-arc ring (6) is installed on the side of the rotating screw (4) near the upper section steel column (1) and the lower section steel column (2). A limiting telescopic rod (7) is installed between the semi-arc frame (3) and the semi-arc ring (6). Multiple sets of limiting telescopic rods (7) are provided and are symmetrically distributed.
4. The positioning structure for butt welding of a steel structure circular pipe column of claim 2, wherein: The disassembly assembly includes grooves (8) at the bottom and top of the semi-circular frame (3). A slot (9) is provided inside the groove (8). An installation frame (10) is provided inside the groove (8). Multiple sets of installation frames (10) are provided and are symmetrically distributed. A compression telescopic rod (11) is installed inside the installation frame (10). A compression spring (12) is installed on the outer ring of the compression telescopic rod (11). Multiple sets of compression telescopic rods (11) and compression springs (12) are provided and are symmetrically distributed. A compression plate (13) is fixedly connected to one side of the compression telescopic rod (11) and the compression spring (12). A locking block (14) is fixedly connected to one side of the compression plate (13). The locking block (14) slides inside the slot (9).
5. The positioning structure for butt welding of a steel structure circular pipe column of claim 4, wherein: The telescopic assembly includes a fixed rod (15) installed at the bottom of the upper mounting frame (10), a sliding rod (16) is slidably connected inside the fixed rod (15), the bottom of the sliding rod (16) is connected to the lower mounting frame (10), and threaded holes (17) are opened inside both the fixed rod (15) and the sliding rod (16), and threaded rods (18) are threaded inside the threaded holes (17), and multiple sets of threaded holes (17) are opened and are linearly distributed.
6. The positioning structure for butt welding of a steel structure circular pipe column of various sizes according to claim 2, characterized in that: A mounting block (19) is installed on one side of the semi-circular frame (3). A mounting screw hole (20) is opened on the front of the mounting block (19). A mounting screw (21) is connected to the internal thread of the mounting screw hole (20).