Cold-formed steel with end-connection assistance

Abstract

The utility model discloses a cold -bending section steel with end supplementary connection positioning belongs to cold -bending section steel technical field, including cold -bending section steel body, dovetail block, dovetail groove, clamping slot, clamping plate, insertion slot, stiffened plate, spacing rod, round plate and screw, the opposite end of cold -bending section steel body is provided with each other adaptation dovetail block and dovetail groove, clamping plate and clamping slot, stiffened plate and insertion slot are used for realizing the primary positioning of vertical and front -back direction when butting, and spacing rod is suitable for transversely penetrating clamping plate and stiffened plate after butt joint to limit transverse displacement. The utility model discloses through multiple groups structure cooperation positioning, and through spacing rod transverse locking, solved the section steel butt joint positioning difficult, connection structure unstable, the problem of easy displacement in multidirectional in prior art, has the beneficial effect of accurate positioning, multidirectional location, stable and reliable structure, convenient assembly.

Description

Technical Field

[0001] This utility model relates to the field of cold-formed steel technology, and in particular to a cold-formed steel with end auxiliary connection positioning. Background Technology

[0002] Cold-formed steel, as a lightweight and high-strength structural material, is widely used in construction engineering, machinery manufacturing and warehouse racking. In practical applications, it is often necessary to splice multiple sections of cold-formed steel at their ends to form a continuous structure of the required length.

[0003] Currently, the end connections of cold-formed steel sections are mostly achieved by welding or by using connecting plates or flanges for bolt fastening. Although welding provides a strong connection, it is inconvenient for on-site construction and difficult to disassemble. When using bolt connections, the ends of the two steel sections lack effective guidance and pre-positioning structures during on-site assembly.

[0004] This connection method relies heavily on manual alignment, resulting in low assembly efficiency. More importantly, simple planar contact or bolt connections cannot provide effective vertical and forward / backward limits at the moment of docking. During assembly, the steel profiles are prone to misalignment and swaying, making it difficult to guarantee connection accuracy. Even after tightening, the overall rigidity and stability at the connection point are poor. Under external force, the splice is prone to relative displacement in multiple degrees of freedom, affecting the safety and load-bearing capacity of the entire structure.

[0005] Therefore, this utility model proposes a cold-formed steel section with end auxiliary connection positioning to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the cold-formed steel profiles with end auxiliary connection positioning, such as lack of effective guidance and pre-positioning structure during end docking, low assembly efficiency, unstable vertical, front-back and lateral positioning after connection, and insufficient overall rigidity and reliability, this utility model aims to provide a cold-formed steel profile with end auxiliary connection positioning that has an improved structure and can effectively solve the above problems.

[0007] This utility model provides a cold-formed steel profile with end auxiliary connection positioning, including a cold-formed steel profile body, a dovetail block, a dovetail groove, a slot, a locking plate, an insertion groove, a stiffening plate, a limiting rod, a round plate, and screws.

[0008] The dovetail block is fixedly connected to the front and rear ends of the top left side of the cold-formed steel body; the dovetail groove is opened at the front and rear ends of the top right side of the cold-formed steel body, and the size of the dovetail groove is adapted to the dovetail block to form a top insertion fit.

[0009] The slots are located at the front and rear ends of the bottom right side of the cold-formed steel body; the clamping plates are fixedly connected to the front and rear ends of the bottom left side of the cold-formed steel body, and the clamping plates and the slots are matched accordingly to form a snap-fit ​​engagement at the bottom.

[0010] The insertion slot is located at the bottom right side of the cold-formed steel body; the stiffening plate is fixedly connected to the bottom left side of the cold-formed steel body, and the stiffening plate is adapted to the insertion slot to form a bottom guiding fit.

[0011] Furthermore, a through hole is provided at the bottom right end of the front side of the cold-formed steel body for the limit rod to pass through; the limit rod is adapted to pass through the through hole; a circular plate is set on the rear side of the limit rod; a screw is adapted to pass through the circular plate and be threaded to the rear side of the limit rod, together forming a set of transverse locking mechanisms.

[0012] Preferably, both the clamping plate and the stiffening plate have through holes for the limiting rod to pass through. In the docked state, the limiting rod is suitable for sequentially passing through the through holes of the cold-formed steel body, the clamping plate, and the stiffening plate, forming a locking path that passes through the key components of the two steel bodies.

[0013] Preferably, the threaded connection between the screw and the limiting rod is used to fix the position of the circular plate. The circular plate uses its blocking effect to prevent the limiting rod from being pulled out of its through hole, ensuring the axial locking state of the limiting rod and improving the anti-loosening performance of the connection.

[0014] Preferably, the dovetail block and the dovetail groove are interlocked to form a limiting structure for restricting the relative displacement of the two cold-formed steel bodies in the vertical and front-back directions. This dovetail structure provides strong shear and pull-out resistance after insertion, significantly enhancing the connection stability at the top.

[0015] Preferably, the stiffening plate and the insertion slot fit together to reinforce the structure and provide positioning guidance. The stiffening plate acts as a guide, allowing the two cold-formed steel sections to automatically align with the center line during docking, simplifying the installation process.

[0016] Preferably, the through-restraint of the limiting rod is used to prevent the two cold-formed steel bodies from lateral displacement. The limiting rod acts like a pin, rigidly connecting the mating parts in the lateral direction, so that the entire splicing structure forms a stable whole.

[0017] Preferably, the outer surface of the dovetail block is chamfered to guide the dovetail block into the dovetail groove. The chamfered structure reduces the difficulty of alignment during insertion, making the assembly process of the top structure smoother.

[0018] Preferably, the front end of the limiting rod is provided with a tapered guide part to guide the limiting rod through the through hole in sequence. When the tapered guide part passes through the through holes opened on the card plate and the stiffening plate, it can automatically correct slight positional deviations, thereby improving the convenience of locking operation.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model solves the problems of low end-to-end positioning accuracy and insufficient stability of connection structure in multiple directions in the prior art by setting three sets of matching structures, namely, dovetail block and dovetail groove, clamping plate and clamping groove, and stiffening plate and insertion groove, at the opposite ends of the cold-formed steel body. It achieves the effect of quickly and accurately completing splicing and multi-directional stable positioning.

[0021] 2. This utility model, by setting up a double-locking fit between the dovetail block and the dovetail groove, forms a limiting structure in the vertical and front-back directions, which is inserted synchronously during docking, effectively enhancing the stability of the docking and achieving the effect of preventing relative displacement in the vertical and front-back directions after splicing.

[0022] 3. This utility model solves the problem of difficult docking and alignment by setting a stiffening plate at the bottom and cooperating with the insertion groove. The stiffening plate plays a role in structural reinforcement and positioning guidance, thereby achieving the effect of assisting in rapid alignment and improving assembly efficiency. Attached Figure Description

[0023] Figure 1 This is a perspective view of a cold-formed steel section with end auxiliary connection positioning proposed in this utility model;

[0024] Figure 2 This is a front view of a cold-formed steel section with end auxiliary connection positioning proposed in this utility model;

[0025] Figure 3 This is a cross-sectional view of the cold-formed steel body in a cold-formed steel section with end auxiliary connection positioning proposed in this utility model.

[0026] Figure 4 This is an exploded view of the screw in a cold-formed steel section with end auxiliary connection positioning proposed in this utility model.

[0027] Legend:

[0028] 1. Cold-formed steel body; 2. Dovetail block; 3. Dovetail groove; 4. Slot; 5. Plate; 6. Insertion slot; 7. Stiffening plate; 8. Limiting rod; 9. Round plate; 10. Screw. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Example:

[0031] Please refer to Figures 1 to 4 This utility model provides a cold-formed steel section with end auxiliary connection positioning, which aims to solve the problems of difficult positioning when the ends of cold-formed steel sections are joined, unstable connection structure and easy displacement in multiple directions in the prior art.

[0032] like Figures 1 to 4 As shown, a cold-formed steel profile with end auxiliary connection positioning includes a cold-formed steel profile body 1 and an auxiliary connection positioning structure disposed at the end of the cold-formed steel profile body 1. The cold-formed steel profile body 1 serves as the main body for connection, and the auxiliary connection positioning structure is used to achieve rapid positioning and stable locking of the two cold-formed steel profile bodies 1 when they are docked.

[0033] Specifically, refer to Figure 1 , Figure 2 and Figure 3 The cold-formed steel body 1 has dovetail blocks 2 fixedly connected to the front and rear ends of the top left side; dovetail grooves 3 are provided at the front and rear ends of the top right side of the cold-formed steel body 1, and the dovetail grooves 3 and dovetail blocks 2 are adapted to each other in size to achieve plug-in fit during docking; slots 4 are provided at the front and rear ends of the bottom right side of the cold-formed steel body 1; a clamping plate 5 is fixedly connected to the front and rear ends of the bottom left side of the cold-formed steel body 1, and the clamping plate 5 is matched with the clamping groove 4 for insertion into the clamping groove 4; an insertion groove 6 is provided at the bottom right side of the cold-formed steel body 1, and the insertion groove 6 is located between the two clamping grooves 4; a stiffening plate 7 is fixedly connected to the bottom left side of the cold-formed steel body 1, and the stiffening plate 7 is located between the two clamping plates 5, and the stiffening plate 7 is adapted to the insertion groove 6.

[0034] It also includes a limiting rod 8, a circular plate 9, and a screw 10 for lateral locking, see reference. Figure 1 and Figure 4 The front bottom right end of the cold-formed steel body 1 has a through hole for the limiting rod 8 to pass through; the circular plate 9 is set on the rear side of the limiting rod 8; the screw 10 is adapted to pass through the circular plate 9 and be threaded to the rear side of the limiting rod 8, and the circular plate 9 is fixed to the end of the limiting rod 8 by means of thread fastening.

[0035] Please refer to Figure 1 , Figure 2 and Figure 3 The positioning structure includes a dovetail block 2 and a dovetail groove 3 mating structure set on the top of the cold-formed steel body 1; the outer surface of the dovetail block 2 is chamfered to guide the dovetail block 2 into the dovetail groove 3; in the mating state, the dovetail block 2 is inserted into the dovetail groove 3, and the two are mated by the dovetail-shaped structure to form a limiting structure to restrict the relative displacement of the two cold-formed steel bodies 1 in the vertical and front-back directions.

[0036] It also includes a clamping plate 5 and a clamping groove 4 mating structure set at the bottom of the cold-formed steel body 1; during docking, the clamping plate 5 is simultaneously inserted into the corresponding clamping groove 4 to further enhance docking stability and assist in vertical and front-back direction limiting.

[0037] Meanwhile, the stiffening plate 7 at the bottom center of the cold-formed steel body 1 is in a corresponding fit with the insertion groove 6; the end of the stiffening plate 7 can be set as a guide slope, and in the assembled state, the stiffening plate 7 slides in the insertion groove 6; this plate and groove fit structure plays a role in structural reinforcement and positioning guidance, ensuring the precise guidance of the two cold-formed steel bodies 1 during the docking process.

[0038] This combination of structures at the top, bottom front and rear ends, and bottom center ensures that the cold-formed steel body 1 is guided and limited in multiple points and directions during docking, thus achieving initial stable positioning.

[0039] As a preferred embodiment, to prevent the two cold-formed steel bodies 1 from separating laterally after butt jointing and to further improve the overall rigidity of the connection, please refer to... Figure 1 and Figure 4 The front bottom right end of the cold-formed steel body 1 is provided with a through hole for the limiting rod 8 to pass through. Correspondingly, the clamping plate 5 and the stiffening plate 7 are also provided with through holes for the limiting rod 8 to pass through. In the docking state, the limiting rod 8 is suitable for passing through the through hole of the cold-formed steel body 1, the through hole of the clamping plate 5 and the through hole of the stiffening plate 7 in sequence. Through the through constraint of the limiting rod 8, the two cold-formed steel bodies 1 are prevented from lateral displacement, thereby locking the two cold-formed steel bodies 1 into a stable whole.

[0040] As a preferred embodiment, in order to facilitate the insertion of the limiting rod 8 and improve assembly efficiency, the front end of the limiting rod 8 is provided with a tapered guide part to guide the limiting rod 8 through each through hole in sequence, thereby reducing the difficulty of alignment.

[0041] As a preferred embodiment, to prevent the limiting rod 8 from loosening and dislodging after being subjected to force or vibration, and to ensure the reliability of the locking, please refer to... Figure 4The circular plate 9 is located on the rear side of the limiting rod 8, and the size of the circular plate 9 is designed to prevent the limiting rod 8 from entering the through hole. The screw 10 passes through the circular plate 9 and is threadedly connected to the rear side of the limiting rod 8. The threaded connection between the screw 10 and the limiting rod 8 is used to fix the position of the circular plate 9. The blocking effect of the circular plate 9 prevents the limiting rod 8 from being pulled out of the through hole, thereby achieving complete locking of the limiting rod 8.

[0042] Working principle: During splicing, the stiffening plate 7 on the bottom left side of the cold-formed steel body 1 is aligned with the insertion slot 6 on the bottom right side of the cold-formed steel body 1, and pushed to insert the stiffening plate 7 into the insertion slot 6. The cooperation between the stiffening plate 7 and the insertion slot 6 plays a role in structural reinforcement and positioning guidance. During the insertion process, the clamping plate 5 on the bottom left side of the cold-formed steel body 1 is simultaneously inserted into the corresponding clamping slot 4 on the bottom right side of the cold-formed steel body 1. At the same time, the outer surface of the dovetail block 2 is chamfered to guide the insertion, so that it is inserted into the dovetail groove 3 on the top right side. Through the cooperation between the dovetail block 2 and the dovetail groove 3, a limiting structure is formed to restrict the relative displacement of the two cold-formed steel bodies 1 in the vertical and front-back directions. Combined with the cooperation between the clamping plate 5 and the clamping slot 4, the initial splicing and positioning are completed.

[0043] After initial positioning, the front end of the limiting rod 8, equipped with a tapered guide, is inserted from the bottom right end of the front side of the cold-formed steel body 1, allowing it to pass through the through hole of the cold-formed steel body 1, the through hole of the clamping plate 5, and the through hole of the stiffening plate 7 in sequence. The through-hole constraint of the limiting rod 8 is used to prevent lateral displacement of the connected cold-formed steel body 1, further improving the structural stability after splicing. Then, the circular plate 9 is placed behind the limiting rod 8, and the screw 10 is inserted through the circular plate 9 and screwed into the threaded hole on the rear side of the limiting rod 8. The position of the circular plate 9 is fixed by the threaded connection between the screw 10 and the limiting rod 8. The circular plate 9 uses its blocking effect to prevent the limiting rod 8 from being pulled out of the through hole, thus achieving complete locking of the limiting rod 8.

Claims

1. A cold-formed steel section with end auxiliary connection positioning, characterized in that, include: The cold-formed steel body (1), dovetail block (2), dovetail groove (3), slot (4), card plate (5), insertion groove (6), stiffening plate (7), limit rod (8), round plate (9) and screw (10); The dovetail block (2) is fixedly connected to the front and rear ends of the top left side of the cold-formed steel body (1). The dovetail groove (3) is opened at the front and rear ends of the top right side of the cold-formed steel body (1), and the size of the dovetail groove (3) is adapted to the size of the dovetail block (2). The slot (4) is opened at the front and rear ends of the bottom right side of the cold-formed steel body (1). The clamping plate (5) is fixedly connected to the front and rear ends of the bottom left side of the cold-formed steel body (1), and the clamping plate (5) and the slot (4) are correspondingly matched. An insertion slot (6) is opened at the bottom right side of the cold-formed steel body (1). The stiffening plate (7) is fixedly connected to the bottom left side of the cold-formed steel body (1), and the stiffening plate (7) is adapted to the insertion slot (6). A through hole is opened at the bottom right side of the front side of the cold-formed steel body (1) for the limiting rod (8) to pass through. The circular plate (9) is set at the rear side of the limiting rod (8). The screw (10) is adapted to pass through the circular plate (9) and be threaded to the rear side of the limiting rod (8).

2. A cold-formed steel section with end auxiliary connection positioning according to claim 1, characterized in that, Both the card plate (5) and the stiffening plate (7) are provided with through holes for the limiting rod (8) to pass through. The limiting rod (8) is suitable for passing through the through hole of the cold-formed steel body (1), the through hole of the card plate (5) and the through hole of the stiffening plate (7) in sequence when in the docking state.

3. A cold-formed steel section with end auxiliary connection positioning according to claim 1, characterized in that, The screw (10) is threadedly connected to the limiting rod (8) to fix the position of the circular plate (9), and the circular plate (9) uses its blocking effect to prevent the limiting rod (8) from being pulled out.

4. A cold-formed steel section with end auxiliary connection positioning according to claim 1, characterized in that, The dovetail block (2) and the dovetail groove (3) together form a limiting structure to restrict the relative displacement of the two cold-formed steel bodies (1) in the vertical and front-back directions.

5. A cold-formed steel section with end auxiliary connection positioning according to claim 1, characterized in that, The stiffening plate (7) and the insertion groove (6) work together to reinforce the structure and provide positioning and guidance.

6. A cold-formed steel section with end auxiliary connection positioning according to claim 2, characterized in that, The through-restraint of the limiting rod (8) is used to prevent the two cold-formed steel bodies (1) from lateral displacement.

7. A cold-formed steel section with end auxiliary connection positioning according to claim 1, characterized in that, The outer surface of the dovetail block (2) is chamfered to guide the dovetail block (2) into the dovetail groove (3).

8. A cold-formed steel section with end auxiliary connection positioning according to claim 2, characterized in that, The front end of the limiting rod (8) is provided with a tapered guide part to guide the limiting rod (8) through the through hole in sequence.

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