Limiting structure for welding H-shaped steel and Larsen steel sheet pile
By designing a limiting structure, the shaking problem during welding of H-shaped steel plates and Larssen sheet piles was solved, achieving stability in welding quality and applicability of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-03
AI Technical Summary
When welding existing H-beam steel plates and Larssen sheet piles, uneven contact surfaces cause shaking, affecting the welding quality.
A limiting structure was designed, including components such as a support frame, threaded rod, transmission plate, extrusion plate, and clamping plate. Through threaded connection and sliding fit, the position of the H-shaped steel plate and the Larssen steel sheet pile is fixed to ensure flush welding.
It effectively prevents H-beam steel plates from swaying, ensures welding quality, and enhances the stability and applicability of the equipment.
Smart Images

Figure CN224073684U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a limiting structure for welding H-beams and Larssen sheet piles, belonging to the field of sheet pile technology. Background Technology
[0002] Steel sheet piles are characterized by high strength, lightweight, excellent water-stopping properties, and durability. They offer high construction efficiency, are reusable, and have significant environmental benefits, reducing soil extraction and concrete usage and effectively protecting land resources. Furthermore, steel sheet pile construction is simple and quick, making them suitable for rapid emergency response to disasters such as floods and landslides.
[0003] When using sheet piles in specific applications such as foundation pits, high structural strength is required, necessitating the use of composite sheet piles. These composite sheet piles combine reinforcing steel bars with Larssen sheet piles through connections. However, during the welding of existing H-beams and Larssen sheet piles, unevenness may exist at the contact surfaces, causing instability when the H-beam is placed on the Larssen sheet pile. This can lead to wobbling during welding, affecting the final weld quality and reducing the overall quality of the installation. To address these issues, we provide a limiting structure for welding H-beams and Larssen sheet piles. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a limiting structure for welding H-beams and Larssen sheet piles, with the specific technical solution as follows:
[0005] A limiting structure for welding H-beams and Larssen sheet piles includes a support frame, a threaded rod rotatably connected inside the support frame, a support mechanism provided on the outer surface of the support frame, a transmission plate threadedly connected to the outer surface of the threaded rod, a cross plate connected to the outer surface of the transmission plate, a fixing plate connected to the outer surface of the cross plate, a limiting shell connected to the outer surface of the fixing plate, an extension plate slidably connected inside the limiting shell, a pressing plate connected to the bottom surface of the extension plate, a baffle connected to the outer surface of the extension plate, a clamping plate connected to the bottom surface of the transmission plate, and a resistance-increasing block connected to the upper surface of the clamping plate.
[0006] Preferably, the support mechanism includes a connecting block, the outer surface of the connecting block is connected to the outer surface of the support frame, an mounting plate is connected to the outer surface of the connecting block, and the outer surface of the mounting plate is slidably connected to the outer surface of the transmission plate.
[0007] Preferably, the bottom surface of the mounting plate is connected to a support column, the bottom surface of the support column is fitted with a base, and the base has bolt holes inside.
[0008] Preferably, the support frame has an internal limit rod, and the outer surface of the limit rod is slidably connected to the inside of the transmission plate.
[0009] Preferably, the outer surface of the first threaded rod is rotatably connected to the interior of the support frame, and the interior of the limiting shell is rotatably connected to the second threaded rod.
[0010] Preferably, the outer surface of the threaded rod is threadedly connected to the inner surface of the extension plate, and the outer surface of the extension plate is slidably connected to the outer surface of the fixed plate.
[0011] Preferably, the outer surface of the limiting rod is connected to a partition plate, and the outer surface of the threaded rod is rotatably connected to the interior of the partition plate.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The limiting structure for welding H-beams and Larssen sheet piles utilizes the cooperation between components such as extrusion plates and baffles. Firstly, the extrusion plate can move closer to the clamping plate, which is located inside the H-beam. The clamping plate is located inside the Larssen sheet pile. By moving the extrusion plate, the H-beam is brought closer to the Larssen sheet pile to its maximum movable position. This prevents the H-beam from wobbling during welding. The baffle keeps the end face of the H-beam flush with the Larssen sheet pile, preventing one end of the H-beam from extending beyond the pile when placed on it. This ensures the quality of the device and is very practical, solving the problem of H-beam wobbling affecting welding quality.
[0014] 2. The limiting structure for welding H-beams and Larssen sheet piles utilizes the cooperation between the transmission plate and bolt holes. The transmission plate can move, changing the position of the extrusion plate and clamping plate to adapt to the size of the H-beam, thus increasing the versatility of the device. Bolts can be installed in the bolt holes, allowing users to fix the position of the base and prevent it from moving. This ensures the secure positioning of the Larssen sheet piles and H-beams, making it highly practical. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the support mechanism structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the connection structure of the partition plates of this utility model;
[0018] Figure 4 This is a schematic diagram showing the positional relationship of the resistance-increasing block in this utility model;
[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the limiting shell of this utility model.
[0020] Figure descriptions: 1. Support frame; 2. Threaded rod one; 3. Support mechanism; 301. Connecting block; 302. Mounting plate; 303. Support column; 304. Base; 305. Bolt hole; 4. Transmission plate; 5. Horizontal plate; 6. Fixing plate; 7. Limiting shell; 8. Extension plate; 9. Extrusion plate; 10. Baffle; 11. Clamping plate; 12. Resistance block; 13. Limiting rod; 14. Threaded rod two; 15. Divider plate. Detailed Implementation
[0021] The present invention will now be further described with reference to the accompanying drawings.
[0022] Please see Figure 1 - Figure 5 It includes a support frame 1, with a threaded rod 2 rotatably connected inside the support frame 1. A support mechanism 3 is provided on the outer surface of the support frame 1. A transmission plate 4 is threadedly connected to the outer surface of the threaded rod 2. The support frame 1 restricts the position of the threaded rod 2, so that the threaded rod 2 will not wobble too much when rotating. The rotation of the threaded rod 2 will bring the two transmission plates 4 closer to each other, so that the transmission plates 4 can be adapted to more types of H-beam steel plates.
[0023] A horizontal plate 5 is connected to the outer surface of the transmission plate 4, and a fixed plate 6 is connected to the outer surface of the horizontal plate 5. The transmission plate 4 fixes the position of the horizontal plate 5. When the transmission plate 4 moves, it will move the horizontal plate 5. The movement of the horizontal plate 5 will move the fixed plate 6. There will be enough distance between the horizontal plate 5 and the fixed plate 6 so that the user will not touch the transmission plate 4 during welding, thus making it more convenient for the user to operate.
[0024] The outer surface of the fixed plate 6 is connected to the limiting shell 7, and the inner surface of the limiting shell 7 is slidably connected to the extension plate 8. The outer surface of the threaded rod 14 is threadedly connected to the inner surface of the extension plate 8. The fixed plate 6 restricts the position of the limiting shell 7. The movement of the fixed plate 6 moves the limiting shell 7. The limiting shell 7 restricts the direction in which the extension plate 8 can move. When the limiting shell 7 moves, it moves the extension plate 8, thereby adjusting the lateral position of the extension plate 8. When the threaded rod 14 rotates, it moves the extension plate 8, thereby adjusting the height of the extension plate 8.
[0025] The bottom surface of the extension plate 8 is connected to the extrusion plate 9, and the outer surface of the extension plate 8 is connected to the baffle 10. The extension plate 8 fixes the position of the extrusion plate 9. When the extension plate 8 moves, it will move the extrusion plate 9 with it, so that the extrusion plate 9 can press on the H-beam steel plate. The extension plate 8 fixes the position of the baffle 10, and the baffle 10 blocks the H-beam steel plate, so that the H-beam steel plate will not move beyond the position of the baffle 10.
[0026] A clamping plate 11 is connected to the bottom surface of the transmission plate 4, and a friction-increasing block 12 is connected to the upper surface of the clamping plate 11. The transmission plate 4 fixes the position of the clamping plate 11. When the transmission plate 4 moves, it will move the clamping plate 11 with it. The clamping plate 11 can move with the friction-increasing block 12 to the bottom of the Larssen steel sheet pile and contact the Larssen steel sheet pile. The clamping plate 11 will not contact the Larssen steel sheet pile. In this way, when the extrusion plate 9 extrudes the H-shaped steel plate, it will make the H-shaped steel plate and the Larssen steel sheet pile approach each other and increase the friction of the contact surface between the H-shaped steel plate and the Larssen steel plate, making it difficult for the H-shaped steel plate to move. The upper surface of the friction-increasing block 12 is relatively rough, and the material of the friction-increasing block 12 is rubber.
[0027] The support mechanism 3 includes a connecting block 301. The outer surface of the connecting block 301 is connected to the outer surface of the support frame 1. A mounting plate 302 is connected to the outer surface of the connecting block 301. The outer surface of the mounting plate 302 is slidably connected to the outer surface of the transmission plate 4. The support frame 1 will fix the position of the connecting block 301 so that the connecting block 301 cannot move. The support frame 1 is connected to the mounting plate 302 through the connecting block 301. The mounting plate 302 will restrict the position of the transmission plate 4.
[0028] The bottom surface of the mounting plate 302 is connected to a support column 303, and a base 304 is mounted on the bottom surface of the support column 303. The base 304 has bolt holes 305 inside, and bolts can be installed in the bolt holes 305. The user can fix the base 304 by inserting bolts into the bolt holes 305. The position of the support column 303 is fixed by the base 304, so that the support column 303 can provide support for the support frame 1.
[0029] The support frame 1 has an internal connection to a limiting rod 13. The outer surface of the limiting rod 13 is slidably connected to the inside of the transmission plate 4. The support frame 1 will fix the position of the limiting rod 13. The limiting rod 13 prevents the transmission plate 4 from rotating together with the threaded rod 2. The limiting rod 13 is a telescopic rod and can control the extension and retraction distance.
[0030] The outer surface of threaded rod 12 is rotatably connected to the inside of support frame 1. Threaded rod 24 is rotatably connected to the inside of limiting shell 7. The outer surface of extension plate 8 is slidably connected to the outer surface of fixing plate 6. Support frame 1 restricts the position of threaded rod 12 so that threaded rod 12 will not generate large vibrations when rotating. Limiting shell 7 restricts the position of threaded rod 24 so that threaded rod 24 will not generate large vibrations when rotating. Fixing plate 6 restricts the position that extension plate 8 can move so that extension plate 8 will not rotate with threaded rod 24.
[0031] The outer surface of the limiting rod 13 is connected to the partition plate 15. The outer surface of the threaded rod 12 is rotatably connected to the inside of the partition plate 15. The limiting rod 13 will fix the position of the partition plate 15, so that the partition plate 15 cannot move. The partition plate 15 is used to block the two transmission plates 4, so that the two transmission plates 4 will not come into contact with each other.
[0032] In use, this utility model first requires that the resistance block 12 on the clamping plate 11 be in complete contact with the bottom surface of the Larssen sheet pile, but the clamping plate 11 is not in contact with the bottom surface of the Larssen sheet pile. Then, rotate the threaded rod 2 to move the two transmission plates 4. The movement of the transmission plates 4 will cause the horizontal plate 5 to move along with the fixed plate 6. The movement of the fixed plate 6 will cause the limiting shell 7 to move along with the extension plate 8. The movement of the extension plate 8 will cause the pressing plate 9 to move, thus moving the pressing plate 9 into the interior of the H-shaped steel plate. Then, rotate the threaded rod 2 to lower the extension plate 8. The lowering of the extension plate 8 will cause the pressing plate 9 to lower, so that the pressing plate 9 presses onto the H-shaped steel plate, and the baffle 10 blocks one end of the H-shaped steel plate. Finally, the position of the base 304 is fixed by bolts.
[0033] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.
Claims
1. A limiting structure for welding H-beams and Larssen sheet piles, characterized in that: The utility model provides a support frame (1), the inside rotation connection of support frame (1) has screw rod one (2), the outer surface of support frame (1) is provided with support mechanism (3), the outer surface screw thread connection of screw rod one (2) has transmission plate (4), the outer surface connection of transmission plate (4) has horizontal plate (5), the outer surface connection of horizontal plate (5) has fixed plate (6), the outer surface connection of fixed plate (6) has limit shell (7), the inside sliding connection of limit shell (7) has extension plate (8), the bottom of extension plate (8) is connected with extrusion plate (9), the outer surface of extension plate (8) is connected with baffle (10), the bottom of transmission plate (4) is connected with clamping plate (11), the upper surface of clamping plate (11) is connected with resistance increasing block (12).
2. The spacing structure for welding H-shaped steel and Larson steel sheet piles according to claim 1, characterized in that: The support mechanism (3) includes a connecting block (301), the outer surface of the connecting block (301) is connected with the outer surface of the support frame (1), the outer surface of the connecting block (301) is connected with a mounting plate (302), and the outer surface of the mounting plate (302) is slidably connected with the outer surface of the transmission plate (4).
3. The spacing structure for welding H-shaped steel and Larson steel sheet piles according to claim 2, characterized in that: The bottom of the mounting plate (302) is connected with a support column (303), the bottom of the support column (303) is provided with a base (304), and the inside of the base (304) is provided with a bolt hole (305).
4. The spacing structure for welding H-shaped steel and Larson steel sheet piles according to claim 1, characterized in that: The inside of the support frame (1) is connected with a limiting rod (13), and the outer surface of the limiting rod (13) is slidably connected with the inside of the transmission plate (4).
5. The spacing structure for welding H-shaped steel and Larson steel sheet pile according to claim 1, characterized in that: The outer surface of the screw rod one (2) is rotatably connected with the inside of the support frame (1), and the inside of the limit shell (7) is rotatably connected with a screw rod two (14).
6. The spacing structure for welding H-shaped steel and Larson steel sheet piles according to claim 5, characterized in that: The outer surface of the screw rod two (14) is threadedly connected with the inside of the extension plate (8), and the outer surface of the extension plate (8) is slidably connected with the outer surface of the fixed plate (6).
7. The spacing structure for welding H-shaped steel and Larson steel sheet piles according to claim 4, characterized in that: The outer surface of the limiting rod (13) is connected with a partition plate (15), and the outer surface of the screw rod one (2) is rotatably connected with the inside of the partition plate (15).