PCCP steel cylinder welding device
By designing structures such as support frames and positioning frames, the problem of edge positioning and alignment in steel cylinder welding was solved, achieving high-quality and efficient welding results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG GUOTONG PIPELINE CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-21
AI Technical Summary
Existing welding equipment makes it difficult to position and align the edges of the rolled plates used for cylinder making during the steel cylinder welding process, and the adjustment of the cylinder rolling spacing is inconvenient, resulting in poor welding quality and low production efficiency.
The structure employs a support frame, positioning frame, threaded limit rod, and adjustment knob. Through threaded connection and knob adjustment, it achieves precise positioning and alignment of the steel coil edge. Combined with guide sleeve and movable ruler to measure the spacing, it prevents misalignment and improves welding quality and efficiency.
It enables precise positioning and alignment of the edges during the steel cylinder welding process, preventing misalignment and improving welding quality and production efficiency.
Smart Images
Figure CN224526350U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCCP processing technology, and more specifically, to a PCCP steel cylinder welding device. Background Technology
[0002] PCCP, short for prestressed concrete cylinder pipe, refers to a water pipe made by winding circumferential prestressed steel wires around a high-strength concrete core with a steel cylinder, and then spraying a dense cement mortar protective layer on it. It is a composite pipe made of thin steel plate, high-strength steel wire and concrete. It fully and comprehensively utilizes the tensile strength and easy sealing properties of steel and the compressive strength and corrosion resistance of concrete. It has the characteristics of high sealing performance, high strength and high impermeability. In the production process of PCCP, the steel cylinder is one of the important components of PCCP. The steel cylinder can be welded using two forming processes: straight seam lap welding and spiral welding. Therefore, welding equipment is required for the welding of the steel cylinder.
[0003] However, existing welding devices are diverse. For example, utility model patent CN218785308U relates to a welding device for the outer surface of the longitudinal seam of a steel cylinder used in cylinder production. This utility model includes a welding table and a welding cylinder. An arc-shaped groove is integrally formed at the center of the top outer wall of the welding table, and the bottom of the welding cylinder is located inside the arc-shaped groove. Support plates with an equidistant structure are welded to both outer walls of the welding table. Equidistantly distributed limiting grooves are formed on both sides of the welding table near the top outer wall of the arc-shaped groove. Limiting blocks are slidably connected inside the limiting grooves, and clamping blocks with an arc-shaped structure are welded to the top outer wall of the limiting blocks. In this utility model, a cylinder pushes the clamping blocks, which in turn causes the limiting blocks to slide along the limiting grooves. The limiting blocks, in turn, cause the positioning blocks to slide along the positioning grooves, making the clamping blocks fit snugly against the outer walls of both sides of the welding cylinder, thus significantly improving the stability and reliability of the welding cylinder during longitudinal seam welding.
[0004] Although this welding device improves the stability and reliability of the welding cylinder during welding, it is difficult to position and align the edges of the rolled plates used for cylinder making during use. The spacing between the rolled cylinders is also inconvenient to adjust, and misalignment is prone to occur at the joints of the rolled cylinders during welding, affecting the welding quality of the steel cylinder and resulting in low production efficiency. To avoid these problems, it is essential to design a PCCP steel cylinder welding device. Utility Model Content
[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0006] To achieve the above objectives, this utility model provides a PCCP steel cylinder welding device, which is accomplished by the following specific technical means:
[0007] A PCCP steel cylinder welding device includes a workbench with symmetrically arranged support frames on the top of the workbench. A cylindrical steel coil is placed inside the support frames. Mounting plates are fixed on the workbench. Two sets of symmetrical positioning frames are set at the two ends of the steel coil. Fastening clamps are movably installed inside the positioning frames. A connecting seat is fixed on the surface of each set of positioning frames that are far apart from each other. A threaded sleeve is provided through the connecting seat. A threaded limit rod is threadedly connected inside the threaded sleeve. An adjustment knob is coaxially provided on the surface of the threaded limit rod. A guide sleeve is fixedly connected to the bottom of the positioning frame. A movable ruler is slidably installed inside the guide sleeve.
[0008] Preferably, the surface of the threaded limiting rod is provided with two threads, the two threads having opposite helical directions, and the two threads on the surface of the threaded limiting rod are respectively matched with the threads on the inner surfaces of the two sets of threaded sleeves.
[0009] Preferably, the positioning frame is threaded with a screw via a threaded ring, one end of the screw is fixedly connected to a rotating handle, and the other end of the screw is movably connected to a fastening clamp, with an anti-slip pad provided on the inner wall of the fastening clamp.
[0010] Preferably, the top of the workbench is provided with two symmetrical fixing plates, and the two fixing plates are located on both sides of the support frame, and a fixing shaft is provided between the two fixing plates, and the fixing shaft passes through the steel coil.
[0011] Preferably, the surface of the fixed shaft is fitted with two mounting seats, one end of each mounting seat is equipped with a telescopic rod, and one end of each telescopic rod is fixedly connected with an arc-shaped support plate. The two arc-shaped support plates can press the steel coil plate to fit against the two support frames.
[0012] Preferably, an electric push rod is installed on the inner wall of the mounting plate, a linear motor is fixed at the bottom of the electric push rod, a connecting plate is fixed at the output end of the linear motor, and a welding head is provided at the bottom of the connecting plate, with the welding head located above the steel coil.
[0013] Preferably, the mounting plate is in the shape of an inverted L, and the positioning frame is in the shape of a C; two symmetrical guide rods are provided through the mounting plate, the guide rods can slide inside the mounting plate, and one end of the guide rod is fixed to the linear motor.
[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0015] When welding bent and butted steel coils, the edge of the rolled steel cylinder is inserted into the positioning frame, and then the rotating handle is tightened to assemble multiple positioning frames onto the rolled steel cylinder. After the positioning frames are installed, turning the adjustment knob moves the two sets of positioning frames closer or further apart through the connecting seat. When they are close enough, they can position and align the two edges of the steel coil. At the same time, with the sliding installation of the guide sleeve and movable ruler, the distance between the aligned edges is measured. This allows for the positioning and alignment of the butt edges of the rolled steel cylinder, preventing misalignment during welding and facilitating the adjustment of the spacing between the rolled steel cylinders. This improves the welding quality of the steel cylinders and increases production efficiency. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a side sectional view of the present invention.
[0019] Figure 3 This is an enlarged structural diagram of point A;
[0020] Figure 4 This is a schematic diagram of the structure on a cylindrical steel coil.
[0021] Figure 5 This is an enlarged structural diagram of point B;
[0022] Figure 6 A schematic diagram of a structure in which an arc-shaped support plate is attached to a steel coil.
[0023] Figure 7 This is a schematic diagram of the welded joint.
[0024] In the diagram: 1. Workbench; 2. Support frame; 3. Steel coil; 4. Mounting plate; 5. Positioning frame; 6. Fastening clamp; 7. Connecting seat; 8. Threaded sleeve; 9. Threaded limit rod; 10. Adjusting knob; 11. Guide sleeve; 12. Movable ruler; 13. Screw; 14. Rotating handle; 15. Anti-slip pad; 16. Fixing plate; 17. Fixing shaft; 18. Mounting seat; 19. Telescopic rod; 20. Arc-shaped support plate; 21. Electric push rod; 22. Linear motor; 23. Connecting plate; 24. Welding head; 25. Guide rod. Detailed Implementation
[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.
[0028] like Figure 1 , Figure 2 as well as Figure 3 As shown, this is a structural schematic diagram of the PCCP steel cylinder welding device in this embodiment. The steel cylinder welding device in this embodiment includes a workbench 1, with symmetrically arranged support frames 2 on the top of the workbench 1. A cylindrical steel coil 3 is placed inside the support frame 2. A mounting plate 4 is fixed on the workbench 1, and the mounting plate 4 is in the shape of an inverted L. Two sets of symmetrical positioning frames 5 are provided at both ends of the steel coil 3, and the positioning frames 5 are C-shaped. A fastening clamp 6 is movably installed inside the positioning frame 5. A screw 13 is threadedly connected to the positioning frame 5 through a threaded ring, and a rotating handle 1 is fixedly connected to one end of the screw 13. 4. The other end of the screw 13 is movably connected to the fastening clamp 6. The inner wall of the fastening clamp 6 is provided with anti-slip pads 15. When welding the bent and butted steel coil 3, the two sets of C-shaped positioning frames 5 are respectively placed on the two ends of the paper roll steel cylinder, so that the edges are inserted into the positioning frames 5. Then tighten the rotating handle 14, and the screw 13 will rotate downward through the rotating handle 14, so that one end of the screw 13 pushes the fastening clamp 6 closer to the steel coil 3. With the setting of the anti-slip pads 15, the fastening clamp 6 is used to press the steel coil 3, thereby assembling multiple positioning frames 5 on the rolled steel cylinder respectively.
[0029] like Figure 4 as well as Figure 5As shown, this is a schematic diagram of the threaded limiting rod 9 in this embodiment. In this embodiment, each group of positioning frames 5 has a connecting seat 7 fixed to its far-away surfaces. A threaded sleeve 8 is provided through the connecting seat 7. The threaded sleeve 8 is threadedly connected to the threaded limiting rod 9. An adjusting knob 10 is coaxially provided on the surface of the threaded limiting rod 9. A guide sleeve 11 is fixedly connected to the bottom of the positioning frame 5. A movable ruler 12 is slidably installed inside the guide sleeve 11. After the positioning frame 5 is installed on the rolled steel cylinder, the adjusting knob 10 is turned, utilizing the threaded engagement between the threaded sleeve 8 and the threaded limiting rod 9. The rotating threaded limit rod 9 can move the two sets of threaded sleeves 8 on its surface. Through the connecting seat 7, it drives the two sets of positioning frames 5 to move away from or towards each other. When they are close to a certain extent, they can drive the two edges of the steel coil 3 to be positioned and connected. At the same time, with the sliding installation of the guide sleeve 11 and the movable ruler 12, the distance between the two aligned edges can be measured. This allows for the positioning and alignment of the connecting edges of the rolled steel cylinder, preventing misalignment during the welding process of the rolled cylinder. It also facilitates the adjustment of the spacing of the rolled steel cylinder, improves the welding quality of the steel cylinder, and increases production efficiency.
[0030] It is worth noting that in this embodiment, the surface of the threaded limiting rod 9 is provided with two threads, the helical directions of the two threads are opposite, and the two threads on the surface of the threaded limiting rod 9 are respectively matched with the threads on the inner surfaces of the two sets of threaded sleeves 8.
[0031] like Figure 6 As shown, this is a schematic diagram of the arc-shaped support plate 20 in this embodiment. In this embodiment, the top of the workbench 1 is provided with two symmetrical fixing plates 16, and the two fixing plates 16 are respectively located on both sides of the support frame 2. A fixing shaft 17 is provided between the two fixing plates 16, and the fixing shaft 17 passes through the steel coil 3. Two mounting seats 18 are sleeved on the surface of the fixing shaft 17. A telescopic rod 19 is installed at one end of each mounting seat 18, and an arc-shaped support plate 20 is fixedly connected to one end of each telescopic rod 19. The support plate 20 can press the steel coil 3 to fit against the two support frames 2. Before welding the steel cylinder, the steel coil 3 is bent with a plate rolling machine. Then, the bent steel coil 3 is placed between the two support frames 2 and abuts against the arc-shaped support plate 20. Then, one end of the two telescopic rods 19 is controlled to drive the two arc-shaped support plates 20 to move together, so that the arc-shaped support plates 20 move towards the support frames 2, thereby pressing the steel coil 3 against the support frames 2, and further curling the steel coil 3 into a cylindrical shape.
[0032] like Figure 7 As shown, it is a structural schematic diagram of the welding head 24 in this embodiment. In this embodiment, an electric push rod 21 is installed on the inner wall of the mounting plate 4. A linear motor 22 is fixed at the bottom end of the electric push rod 21. A connecting plate 23 is fixed at the output end of the linear motor 22. A welding head 24 is provided at the bottom of the connecting plate 23, and the welding head 24 is located above the steel coil 3.
[0033] It is worth noting that in this embodiment, the mounting plate 4 is provided with two symmetrical guide rods 25. The guide rods 25 can slide within the mounting plate 4, and one end of the guide rod 25 is fixed to the linear motor 22. When welding the longitudinal seam of the rolled steel cylinder, the electric push rod 21 is controlled to drive the linear motor 22 to rise and fall, so that the welding head 24 is close to the longitudinal seam. Then the linear motor 22 is started, and the welding head 24 is driven to move horizontally through the linear motor 22 to perform the welding operation.
[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 of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A PCCP steel cylinder welding device, comprising a workbench (1), a symmetrically arranged support frame (2) on the top of the workbench (1), a cylindrical steel coil (3) placed inside the support frame (2), and a mounting plate (4) fixed on the workbench (1), characterized in that: Two sets of symmetrical positioning frames (5) are provided at the two ends of the steel coil (3). A fastening clamp (6) is movably installed inside the positioning frame (5). A connecting seat (7) is fixed on the surface of each positioning frame (5) that is far apart from each other. A threaded sleeve (8) is provided through the connecting seat (7). A threaded limit rod (9) is threadedly connected inside the threaded sleeve (8). An adjustment knob (10) is coaxially provided on the surface of the threaded limit rod (9). A guide sleeve (11) is fixedly connected to the bottom of the positioning frame (5). A movable ruler (12) is slidably installed inside the guide sleeve (11).
2. The PCCP steel cylinder welding device according to claim 1, characterized in that: The surface of the threaded limit rod (9) is provided with two threads, the two threads have opposite helical directions, and the two threads on the surface of the threaded limit rod (9) are respectively matched with the threads on the inner surface of the two sets of threaded sleeves (8).
3. The PCCP steel cylinder welding device according to claim 1, characterized in that: The positioning frame (5) is threaded with a screw (13) via a threaded ring. One end of the screw (13) is fixedly connected to a rotating handle (14), and the other end of the screw (13) is movably connected to a fastening clamp (6). The inner wall of the fastening clamp (6) is provided with an anti-slip pad (15).
4. The PCCP steel cylinder welding device according to claim 1, characterized in that: The top of the workbench (1) is provided with two symmetrical fixed plates (16), and the two fixed plates (16) are located on both sides of the support frame (2). A fixed shaft (17) is provided between the two fixed plates (16), and the fixed shaft (17) passes through the steel coil (3).
5. The PCCP steel cylinder welding device according to claim 4, characterized in that: Two mounting seats (18) are fitted onto the surface of the fixed shaft (17). One end of each mounting seat (18) is equipped with a telescopic rod (19). One end of each telescopic rod (19) is fixedly connected to an arc-shaped support plate (20). The two arc-shaped support plates (20) can press the steel coil (3) so that it fits against the two support frames (2).
6. The PCCP steel cylinder welding device according to claim 1, characterized in that: An electric push rod (21) is installed on the inner wall of the mounting plate (4). A linear motor (22) is fixed at the bottom of the electric push rod (21). A connecting plate (23) is fixed at the output end of the linear motor (22). A welding head (24) is provided at the bottom of the connecting plate (23), and the welding head (24) is located above the steel coil (3).
7. The PCCP steel cylinder welding device according to claim 1, characterized in that: The mounting plate (4) is in the shape of an inverted L, and the positioning frame (5) is in the shape of a C. The mounting plate (4) has two symmetrical guide rods (25) running through it. The guide rods (25) can slide inside the mounting plate (4). One end of the guide rod (25) is fixed to the linear motor (22).