Anti-deformation C-shaped steel
By welding inclined plates inside the C-shaped steel to form a triangular cavity and combining it with a bolt sliding locking mechanism, the problems of low torsional stiffness and thin-wall buckling of the C-shaped steel are solved, achieving higher structural stability and torsional resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU YOUNAIDE METAL PROD CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-17
AI Technical Summary
Existing C-shaped steel has low torsional stiffness in its open section, making it prone to twisting and deformation under torsional or eccentric loads. Thin-walled structures are also prone to local buckling under compression or shear.
By welding the first and second inclined plates inside the C-shaped steel to form a triangular cavity, and utilizing the sliding locking mechanism of bolts and fixed cylinders, the torsional resistance is enhanced, external loads are distributed, and local buckling is suppressed.
It significantly improves the torsional stiffness and resistance to eccentric loads of C-shaped steel, reduces the risk of torsional deformation, and is suitable for dynamic or high-load scenarios.
Smart Images

Figure CN224133904U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of C-shaped steel technology, specifically to a C-shaped steel resistant to deformation. Background Technology
[0002] As an important branch of cold-formed steel, C-shaped steel's development stems from the demand for lightweight and high-strength materials in the construction and manufacturing industries. Traditional hot-rolled steel, due to its limitations such as low material utilization and large weight, has gradually been replaced by cold-forming technology. With the acceleration of industrialization, C-shaped steel, with its flexible production process and diverse cross-sectional designs, has become the mainstream material in modern construction and engineering. In the construction field, C-shaped steel is widely used in wall supports, roof trusses, purlins, etc. Its cross-sectional moment of inertia is higher than that of traditional steel, significantly improving its bending and compressive strength.
[0003] The existing C-shaped steel has an open cross-section, which results in low torsional stiffness. It is prone to torsional deformation when subjected to torsional force or eccentric load. In addition, C-shaped steel is usually cold-bent from thin steel plate with a thin wall thickness, which makes it prone to local buckling when subjected to compression or shear. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide a deformation-resistant C-shaped steel to solve the technical problems of C-shaped steel being prone to torsion and deformation under torsion or eccentric loads due to its low torsional stiffness in the open section, and its thin-walled structure being prone to local buckling under compression or shear.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a deformation-resistant C-shaped steel, comprising a support and a C-shaped steel, wherein multiple sets of first fixing blocks are fixed at the top of the support, and a C-shaped steel is fixed at one end of each first fixing block. The C-shaped steel includes bolts, fixing cylinders, a C-shaped plate, a sliding groove, second fixing blocks, and the C-shaped steel itself. Two sets of second fixing blocks with internal sliding grooves are fixed inside the C-shaped steel. Fixing cylinders that cooperate with the sliding grooves are slidably connected inside the sliding grooves, and the fixing cylinders are fixed at one end of the C-shaped plate. Bolts that are threadedly connected to the C-shaped plate pass through the C-shaped steel.
[0006] By adopting the above technical solution, external personnel place the C-shaped steel to be installed on the top of the bracket. After placement, the multiple sets of threaded holes on one end of the C-shaped steel are aligned with the first fixing block welded to the top of the bracket.
[0007] Furthermore, the C-shaped steel includes bolts, a fixed cylinder, a C-shaped plate, a sliding groove, a second fixing block, and the C-shaped steel itself. Two sets of second fixing blocks with internal sliding grooves are fixed inside the C-shaped steel. A fixed cylinder that slidably connects to the sliding groove is slidably connected to it, and the fixed cylinder is fixed to one end of the C-shaped plate. A bolt threadedly connected to the C-shaped plate passes through the C-shaped steel. A threaded hole threaded to the bolt is opened at one end of the first fixing block. The bracket and the first fixing block are fixed together by welding.
[0008] By adopting the above technical solution, the C-shaped steel is fixed by screws. Then, external personnel rotate the bolt that mates with the threaded hole on the C-shaped steel, causing the bolt to slowly move vertically along its internal thread until it reaches the C-shaped plate located inside the opening of the C-shaped steel. Then, the bolt is rotated again, causing one end of the bolt to slowly press against the C-shaped plate, allowing both ends of the C-shaped plate to move toward the opening of the C-shaped steel. Both ends of the C-shaped plate are equipped with fixing cylinders.
[0009] Furthermore, the first inclined plate and the second inclined plate are fixed by welding, a cavity is opened between the first inclined plate and the second inclined plate, multiple sets of threaded holes are opened at the top of the bracket, and two sets of fixing plates are provided at one end of the first fixing block.
[0010] By adopting the above technical solution, the fixed cylinder is located inside the second fixed block welded inside the C-shaped steel, so that the fixed cylinders at both ends of the C-shaped plate can abut against the bottom of the second fixed block along the sliding groove set inside the second fixed block, thereby increasing the torque bearing capacity to a certain extent. Because the C-shaped steel is also welded with a first inclined plate and a second inclined plate, the first inclined plate and the second inclined plate are welded perpendicularly to each other, and can divide the excess space inside the C-shaped steel to form a triangular cavity, so that it will not easily twist and deform when subjected to compression or impact.
[0011] In summary, this utility model has the following beneficial effects: The operator initially fixes the C-shaped steel with bolts, then rotates the adjusting bolts on the C-shaped steel, driving it to move vertically downwards along the thread until the bottom of the bolt presses against the C-shaped plate inside the opening of the C-shaped steel. The bolts are then tightened, pushing both ends of the C-shaped plate towards the opening of the C-shaped steel. The fixed cylinders at both ends of the C-shaped plate are embedded in the grooves of the second fixed block inside the shell, sliding along the grooves to the bottom to form rigid support, significantly improving torsional resistance. The C-shaped steel has orthogonally distributed first and second inclined plates welded inside, dividing the inner cavity of the C-shaped steel into a triangular stable cavity. This structure disperses external loads through geometric rigidity, suppressing local buckling in thin-walled areas and effectively reducing the risk of torsion under impact. Utilizing the inclined plate cavity reinforcement and sliding locking mechanism, it significantly enhances the resistance to eccentric loads, making it suitable for dynamic or high-load scenarios and achieving higher structural stability. Attached Figure Description
[0012] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;
[0014] Figure 3 This utility model Figure 2 Enlarged view of point A;
[0015] Figure 4 This is a partial structural schematic diagram of the present invention.
[0016] In the diagram: 1. Bracket; 2. Fixing block; 3. C-shaped steel; 301. Bolt; 302. Fixing cylinder; 303. C-shaped plate; 304. Slide groove; 305. Fixing block; 306. C-shaped steel; 4. First inclined plate; 5. Second inclined plate. Detailed Implementation
[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0018] The embodiments of this utility model will be described below based on its overall structure.
[0019] A type of deformation-resistant C-shaped steel, such as Figures 1-4 As shown, the device includes a bracket 1 and a C-shaped steel 3. The device is characterized in that: multiple sets of first fixing blocks 2 are fixed to the top of the bracket 1, a C-shaped steel 3 is fixed to one end of the first fixing block 2, a first inclined plate 4 is fixed inside the C-shaped steel 3, and a second inclined plate 5 is fixed between the first inclined plate 4 and the C-shaped steel 3. The C-shaped steel 3 to be installed is placed on the top of the bracket 1 by external personnel. After it is placed, the multiple sets of threaded holes on one end of the C-shaped steel 3 are aligned with the first fixing blocks 2 welded to the top of the bracket 1.
[0020] For example, the C-shaped steel 3 includes bolts 301, a fixing cylinder 302, a C-shaped plate 303, a sliding groove 304, a second fixing block 305, and a C-shaped shell 306. Two sets of second fixing blocks 305 with internal sliding grooves 304 are fixed inside the C-shaped shell 306. A fixing cylinder 302 that slidably engages with the sliding groove 304 is slidably connected inside the groove 304, and the fixing cylinder 302 is fixed to one end of the C-shaped plate 303. Bolts 301 threadedly connect to the C-shaped plate 303 pass through the C-shaped shell 306. The C-shaped steel is secured by the bolts. 3. After fixing, the external staff rotates the bolt 301 that mates with the threaded hole on the C-shaped shell 306, so that the bolt 301 moves slowly in the vertical direction along its internal thread until it reaches the C-shaped plate 303 located inside the opening of the C-shaped steel 3. Then, the bolt 301 is rotated so that one end of the bolt 301 is slowly pressed against the C-shaped plate 303, so that both ends of the C-shaped plate 303 move toward the opening of the C-shaped shell 306. Both ends of the C-shaped plate 303 are provided with fixing cylinders 302.
[0021] For example, one end of the first fixing block 2 has a threaded hole for threaded connection with the bolt 301. The bracket 1 and the first fixing block 2 are fixed by welding, and the first inclined plate 4 and the second inclined plate 5 are fixed by welding. A cavity is formed between the first inclined plate 4 and the second inclined plate 5. The top of the bracket 1 has multiple sets of threaded holes. One end of the first fixing block 2 is provided with two sets of fixing plates. The fixing cylinder 302 is located inside the second fixing block 305 welded inside the C-shaped shell 306, so that the fixing cylinders 302 at both ends of the C-shaped plate 303 can abut against the bottom end of the second fixing block 305 along the sliding groove 304 provided inside the second fixing block 305, thereby increasing the torque bearing capacity to a certain extent.
[0022] The working principle of this utility model is as follows: When in use, the C-shaped steel 3 to be installed is placed on the top of the bracket 1 by external personnel. After it is placed, the multiple sets of threaded holes on one end of the C-shaped steel 3 are aligned with the first fixing block 2 welded to the top of the bracket 1.
[0023] The C-shaped steel 3 is fixed by screws. Then, the external staff rotates the bolt 301 that matches the threaded hole on the C-shaped shell 306, so that the bolt 301 moves slowly vertically along its internal thread until it reaches the C-shaped plate 303 located inside the opening of the C-shaped steel 3. Then the bolt 301 is rotated, so that one end of the bolt 301 is slowly pressed against the C-shaped plate 303, so that both ends of the C-shaped plate 303 move toward the opening of the C-shaped shell 306. Both ends of the C-shaped plate 303 are provided with fixing cylinders 302.
[0024] The fixed cylinder 302 is located inside the second fixed block 305 welded inside the C-shaped shell 306, so that the fixed cylinders 302 at both ends of the C-shaped plate 303 can abut against the bottom of the second fixed block 305 along the sliding groove 304 provided inside the second fixed block 305, thereby increasing the torque bearing capacity to a certain extent.
[0025] Specifically, because the C-shaped shell 306 also has a first inclined plate 4 and a second inclined plate 5 welded inside, the first inclined plate 4 and the second inclined plate 5 are welded perpendicularly to each other, and can divide the excess space inside the C-shaped steel 3 to form a triangular cavity, so that it will not easily twist and deform when subjected to compression or impact.
[0026] Through the above structure, the cross section of the C-shaped steel 3 is not simply an open shape. The first inclined plate 4 and the second inclined plate 5 increase its torsional stiffness, making it less prone to torsional deformation when subjected to torsional force or eccentric load.
[0027] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A deformation-resistant C-shaped steel comprising a bracket (1) and a C-shaped steel (3), characterized in that: The top of the bracket (1) is fixed with multiple sets of first fixing blocks (2). One end of the first fixing block (2) is fixed with a C-shaped steel (3). The C-shaped steel (3) includes bolts (301), fixing cylinders (302), C-shaped plates (303), sliding grooves (304), second fixing blocks (305), and C-shaped shells (306). Two sets of second fixing blocks (305) with sliding grooves (304) are fixed inside the C-shaped steel (306). The sliding grooves (304) are slidably connected with the fixing cylinders (302) that cooperate with them. The fixing cylinders (302) are fixed to one end of the C-shaped plates (303). Bolts (301) that are threadedly connected to the C-shaped plates (303) pass through the C-shaped steel (306).
2. The deformation resistant C-steel of claim 1, wherein: The C-shaped steel (3) has a first inclined plate (4) fixed inside, and a second inclined plate (5) is fixed between the first inclined plate (4) and the C-shaped steel (3).
3. The deformation resistant C-steel of claim 1, wherein: The first fixing block (2) has a threaded hole at one end that is threaded to be connected to the bolt (301), and the bracket (1) is fixed to the first fixing block (2) by welding.
4. The deformation resistant C-steel of claim 2, wherein: The first inclined plate (4) and the second inclined plate (5) are fixed together by welding, and a cavity is provided between the first inclined plate (4) and the second inclined plate (5).
5. The deformation resistant C-steel of claim 1, wherein: The bracket (1) has multiple sets of threaded holes at its top end, and the first fixing block (2) has two sets of fixing plates at one end.