A steel structure clamp for welding
The multi-dimensional adjustment system solves the problem that traditional fixtures cannot adapt to welding at complex angles, enabling efficient and precise steel structure welding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG NINTH METALLURGICAL CONSTR CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional fixtures are mostly fixed angles, which cannot meet the needs of welding at complex angles, resulting in low efficiency and difficulty in guaranteeing accuracy.
A multi-dimensional adjustment system including a base, clamp, sliding groove, semi-circular worm gear and motor was designed. The clamp can be laterally slidable, rotated at an angle and adjusted in distance through a handwheel, worm gear and electric screw. It has a self-locking function and is suitable for welding various steel structural components.
It enables flexible adjustment in multiple dimensions, improves equipment versatility and welding efficiency, ensures welding accuracy and quality, and reduces rework rate.
Smart Images
Figure CN224273920U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel structure technology, specifically to a steel structure clamp for welding. Background Technology
[0002] Steel structures are mainly composed of steel beams, steel columns, steel trusses, and other components made of shaped steel and steel plates. These components are typically connected by welds, bolts, or rivets. Due to their light weight and ease of construction, they are widely used in large factories, stadiums, and high-rise buildings.
[0003] Traditional clamps are mostly fixed angles, such as right angles, and can only meet the needs of straight line or simple angle welding, such as flat welding and fillet welding. For welding complex angles, such as diagonal braces or arc structures, custom-made clamps or manual adjustment of the workpiece are required, which has many shortcomings in practical use. For example, it is inefficient. In steel structure factory construction, steel beams are spliced at various angles. When using traditional right-angle clamps, workers need to change the corresponding special clamps every time they change the welding angle, and the downtime caused by clamp replacement can seriously affect the project schedule. Furthermore, the accuracy of manual adjustment of workpiece angles is difficult to guarantee. Manual adjustment relies on worker experience and measuring tools, which may introduce human error, leading to large accuracy errors. In some large steel structure welding, the inability to accurately align some components after installation due to deviations in manual angle adjustment not only wastes materials but also increases production costs. Utility Model Content
[0004] One of the technical problems that this application aims to solve is that traditional fixtures are mostly fixed angles, such as right angles, which can only meet the requirements of straight line or simple angle welding, such as flat welding and fillet welding, and have many shortcomings in practical use.
[0005] To address the aforementioned technical problems, this application provides a welding steel structure clamp, comprising a base, with clamps on both sides of the upper middle portion of the base, each clamp including a base plate, a fixed clamping plate fixedly installed on one side of the upper part of each base plate, a sliding groove formed in the middle of the upper part of each base plate, the sliding clamping plate being slidably engaged in the middle of the sliding groove, a hollow groove formed in the middle of one end of the base, a semi-circular worm gear fixedly installed on one side of the middle of the hollow groove, a semi-circular rotating groove formed in one side of the middle of one end of the base, a semi-circular sliding plate slidably engaged in the middle of the semi-circular rotating groove, a fixed plate fixedly installed at the lower end of the semi-circular sliding plate, and a worm gear rotatably installed in the middle of one end of the fixed plate.
[0006] In some embodiments, the base has grooves on both sides of the middle of the other end, a guide rod is fixedly installed in the middle of one groove, a threaded rod is rotatably installed in the middle of the other groove, and limit plates are fixedly installed at the four corners of the base.
[0007] In some embodiments, sliding plates are fixedly installed on both sides of the lower middle part of the base plate of one of the clamps, wherein the clamp located on the side of the base with the groove is slidably engaged with the base through the sliding plate.
[0008] In some embodiments, the threaded rod is threadedly connected to the middle of one of the slide plates, the guide rod is slidably engaged with the middle of another slide plate, and one end of the threaded rod passes through the base and is fixedly mounted with a handwheel.
[0009] In some embodiments, an electric wire rod is rotatably installed in the middle of each of the two sliding grooves, and the two electric wire rods are respectively threaded to the middle of the lower end of the two sliding clamps. Multiple rubber hoses are uniformly fixedly installed on one side of the two sets of fixed clamps and sliding clamps.
[0010] In some embodiments, one of the clamps is rotatably engaged with one end of the base where the clamp is located via a semi-circular sliding plate. A motor is fixedly mounted on one end of the fixing plate, and the output end of the motor is fixedly connected to one end of the worm gear. The worm gear and the semi-circular worm wheel mesh with each other.
[0011] This utility model has at least the following beneficial effects:
[0012] 1. This utility model allows for multi-dimensional flexible adjustment during use, offering strong adaptability. The two sets of clamps integrate three functions: lateral sliding, angle rotation, and spacing adjustment. The lateral spacing between the clamps is adjusted via a handwheel-driven threaded rod, accommodating workpieces of different lengths. A motor drives a worm gear to adjust the clamp angle, meeting the needs of T-shaped, L-shaped, and other multi-angle welding requirements. An electric screw controls the translation of the sliding clamping plate, adjusting the clamping spacing. This multi-dimensional adjustment method allows the clamps to adapt to welding various steel structural components such as steel plates and structural steel sections without replacement, significantly improving the equipment's versatility and efficiency.
[0013] 2. This utility model features a multi-layered self-locking design, ensuring stability and reliability. The threaded rod, worm gear, and induction rod all possess self-locking functions. Once adjusted, the threaded rod prevents lateral slippage of the clamp, the worm gear maintains a fixed angle, and the induction rod maintains a stable clamping force. Combined with the base limiting plate, this restricts the range of movement, forming a robust clamping structure. During welding, even under the influence of external forces such as vibration and thermal deformation, the clamp ensures the workpiece remains in its position, effectively guaranteeing welding accuracy and quality and reducing rework rates. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;
[0015] Figure 2 This is a three-dimensional structural diagram of one of the clamps of this utility model;
[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the hollow groove of this utility model;
[0017] Figure 4 This is a three-dimensional structural diagram of another clamp of this utility model.
[0018] In the diagram: 1. Base; 11. Slide groove; 12. Slide plate; 13. Guide slide rod; 14. Threaded rod; 15. Handwheel; 16. Limiting plate; 2. Clamp; 20. Hollow groove; 21. Semi-circular rotating groove; 22. Semi-circular worm gear; 23. Fixing plate; 24. Worm; 25. Motor; 26. Semi-circular slide plate; 27. Base plate; 28. Sliding groove; 29. Fixing clamp; 30. Sliding clamp; 31. Electric wire rod; 32. Rubber hose. 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] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a steel structure clamp 2 for welding, including a base 1, with clamps 2 on both sides of the upper middle part of the base 1, each clamp 2 including a base plate 27, with a fixing clamp 29 fixedly installed on one side of the upper end of each base plate 27, and a sliding groove 28 opened in the middle of the upper end of each base plate 27, with a sliding clamp 30 slidably engaged in the middle of the sliding groove 28, a hollow groove 20 opened in the middle of one end of the base 1, a semi-circular worm gear 22 fixedly installed on one side of the middle of the hollow groove 20, and a semi-circular rotating groove 21 opened in one side of the middle of one end of the base 1, with a semi-circular sliding plate 26 slidably engaged in the middle of the semi-circular rotating groove 21. A fixed plate 23 is fixedly installed at the lower end of the slide plate 26. A worm gear 24 is rotatably installed in the middle of one end of the fixed plate 23. Electric wire rods 31 are rotatably installed in the middle of the two sliding grooves 28. The two electric wire rods 31 are threaded to the middle of the lower end of the two sliding clamps 30 respectively. Multiple rubber hoses 32 are evenly fixedly installed on one side of the two sets of fixed clamps 29 and sliding clamps 30. Another clamp 2 is rotatably clamped to the end of the base 1 where the clamp 2 is opened by the semi-circular slide plate 26. A motor 25 is fixedly installed at one end of the fixed plate 23. The output end of the motor 25 is fixedly connected to one end of the worm gear 24. The worm gear 24 and the semi-circular worm wheel 22 mesh with each other.
[0021] In this embodiment, one of the clamps 2 can achieve stepless rotational positioning within a 180-degree range. The motor 25 drives the worm 24 to mesh with the semi-circular worm wheel 22, which in turn drives the semi-circular slide plate 26 to slide within the semi-circular rotating groove 21. This allows the clamp 2 on one side to rotate at any angle from 0° to 180° around the center of the base 1. This is suitable for complex angle joints such as T-shaped, L-shaped, and cross-shaped joints in steel structure welding, such as steel truss node welding. No manual adjustment of positioning is required. Due to the self-locking characteristics of the semi-circular worm wheel 22 and the worm 24 transmission, there is no shaking after positioning, which ensures the stability during welding. The sliding clamping plates 30 of the two clamps 2 are driven by the electric screw 31, and the distance between them and the fixed clamping plate 29 can be independently controlled. This is suitable for the rapid clamping and loosening of workpieces of different thicknesses. The rubber hose 32 on the inner side of the fixed clamping plate 29 and the sliding clamping plate 30 can form a flexible contact surface when clamping.
[0022] Example 2: As Figures 1-2 As shown, the other end of the base 1 has two sides of the middle section of the sliding groove 11. A guide rod 13 is fixedly installed in the middle of one of the sliding grooves 11, and a threaded rod 14 is rotatably installed in the middle of the other sliding groove 11. Limiting plates 16 are fixedly installed at the four corners of the base 1. Slide plates 12 are fixedly installed on both sides of the lower middle section of the bottom plate 27 of one of the clamps 2. The clamp 2 located on the side of the base 1 with the sliding groove 11 is slidably engaged with the base 1 through the slide plate 12. The threaded rod 14 is threadedly connected to the middle of one of the slide plates 12, and the guide rod 13 is slidably engaged with the middle of the other slide plate 12. A handwheel 15 is fixedly installed through the base 1 at one end of the threaded rod 14.
[0023] In this embodiment, one of the clamps 2 can be slidably adjusted along the length of the base 1. By rotating the handwheel 15 to drive the threaded rod 14 to rotate, one clamp 2 can be moved along the slide groove 11. Combined with the angle and spacing adjustment of the other clamp 2, it can accurately adapt to steel structure workpieces of different sizes and shapes. For example, for welding steel beams with large length differences, there is no need to replace the clamp 2. Positioning can be quickly completed by sliding and angle adjustment. The guide slide rod 13 is set to provide precise guidance during the sliding process, ensuring that the clamp 2 will not shift or shake during translation, ensuring adjustment accuracy, and keeping the relative position error between the two clamps 2 within a very small range to meet the requirements of high-precision welding. The limiting plate 16 is fixedly installed at the four corners of the base 1 to fix the base 1.
[0024] like Figures 1-4As shown, in use, the two steel structures to be welded are fixed above the two clamps 2 respectively. First, according to the length of the two steel structures to be welded, the operator rotates the handwheel 15 at one end of the base 1. The handwheel 15 drives the threaded rod 14 to rotate. Since the threaded rod 14 is threadedly connected to the middle of the slide plate 12 of one of the clamps 2, the clamp 2 slides along the slide groove 11 on the base 1 under the action of the threaded transmission. At the same time, the slide plate 12 on the other side moves synchronously along the guide slide rod 13 to ensure that the clamp 2 moves smoothly. When the distance between the two clamps 2 is adapted to the length of the steel structure, the self-locking characteristic of the threaded rod 14 fixes the position of the clamp 2, preventing displacement during subsequent operations. If the two steel structures need to be welded at a specific angle, such as a T-type or L-type joint, the motor 25 installed at one end of the fixed plate 23 is started. The motor 25 drives the worm gear 24 to rotate, which meshes with the semi-circular worm wheel 22 fixed in the hollow groove 20 of the base 1. Since the lower end of the semicircular sliding plate 26 is connected to the fixed plate 23 and is slidably engaged in the semicircular rotating groove 21, the transmission of the worm gear 24 drives the semicircular sliding plate 26 to slide within the semicircular rotating groove 21, thereby causing the clamp 2 connected to it to rotate around the base 1. By controlling the motor 25, the clamp 2 can be positioned at any angle within the range of 0-180° to meet different welding angle requirements. After the angle is adjusted to the correct position, the self-locking characteristic of the worm gear 24 ensures the stability of the clamp 2 and prevents angle deviation during welding. After the spacing and angle are adjusted, the electric wire rods 31 in the two clamps 2 are activated. The electric wire rods 31 are energized and rotate, and their threads are connected to the middle of the lower end of the sliding clamp 30. Through thread transmission, the sliding clamp 30 is driven to translate within the sliding groove 28. As the sliding clamp 30 approaches the fixed clamp 29, the rubber hoses 32 evenly distributed on one side of the fixed clamp 29 and the sliding clamp 30 gradually contact the surface of the steel structure. The rubber hose 32 is elastic and can adapt to the slight irregularities on the surface of the steel structure, providing uniform clamping force while avoiding damage to the workpiece surface due to rigid compression. When the sliding clamp 30 moves to the appropriate position, the wire rod 31 stops working, stably clamping the steel structure and ensuring that the workpiece will not shift due to vibration or thermal deformation during the welding process.
[0025] 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.
[0026] 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A steel structure clamp for welding, comprising a base (1), both sides of the middle of the upper end of the base (1) are provided with clamps (2), characterized in that: Both clamps (2) include a base plate (27). A fixed clamping plate (29) is fixedly installed on one side of the upper end of each of the two base plates (27). A sliding groove (28) is opened in the middle of the upper end of each of the two base plates (27). A sliding clamping plate (30) is slidably engaged in the middle of the sliding groove (28). A hollow groove (20) is opened in the middle of one end of the base (1). A semi-circular worm gear (22) is fixedly installed on one side of the middle of the hollow groove (20). A semi-circular rotating groove (21) is opened in one side of the middle of one end of the base (1). A semi-circular sliding plate (26) is slidably engaged in the middle of the semi-circular rotating groove (21). A fixed plate (23) is fixedly installed at the lower end of the semi-circular sliding plate (26). A worm gear (24) is rotatably installed in the middle of one end of the fixed plate (23).
2. A steel structural clamp for welding according to claim 1, characterized in that: The base (1) has two sliding grooves (11) on both sides of the middle of the other end. A guide rod (13) is fixedly installed in the middle of one of the sliding grooves (11), and a threaded rod (14) is rotatably installed in the middle of the other sliding groove (11). Limiting plates (16) are fixedly installed at the four corners of the base (1).
3. A steel structural clamp for welding according to claim 2, characterized in that: One of the clamps (2) has a sliding plate (12) fixedly installed on both sides of the lower middle part of the base plate (27). The clamp (2) located on the side of the base (1) with the groove (11) is slidably engaged with the base (1) through the sliding plate (12).
4. A steel structural clamp for welding according to claim 3, characterized in that: The threaded rod (14) is threaded to the middle of one of the slide plates (12), and the guide rod (13) is slidably engaged with the middle of the other slide plate (12). One end of the threaded rod (14) passes through the base (1) and is fixedly mounted with a handwheel (15).
5. The steel structural clamp for welding according to claim 1, characterized in that: Electric wire rods (31) are rotatably installed in the middle of the two sliding grooves (28). The two electric wire rods (31) are threaded to the middle of the lower end of the two sliding clamps (30). Multiple rubber hoses (32) are evenly fixedly installed on one side of the two sets of fixed clamps (29) and sliding clamps (30).
6. A steel structural clamp for welding according to claim 1, characterized in that: One of the clamps (2) is rotatably engaged with one end of the base (1) where the clamp (2) is located via a semi-circular sliding plate (26). A motor (25) is fixedly installed at one end of the fixing plate (23). The output end of the motor (25) is fixedly connected to one end of the worm (24). The worm (24) and the semi-circular worm wheel (22) mesh with each other.