Quickly spliced light steel keel

Abstract

The utility model discloses a quickly spliced light steel keel, belongs to the technical field of ceiling keels, and solves the problem that the service life of a ceiling is not long enough due to the fact that the welding position of an expansion bolt and a suspension arm is rusted and the structural strength is reduced due to long-time moisture erosion. Comprising a keel strip with a C-shaped section, a telescopic sleeve and a connecting rod, the top face of the telescopic sleeve is fixedly connected with a limiting disc, the bottom face of the telescopic sleeve is fixedly connected with a connecting disc, the connecting disc is slidably connected to the top face of the keel strip, the upper end of the connecting rod penetrates through the keel strip and the connecting disc and then enters the telescopic sleeve, and the upper end of the connecting rod abuts against the limiting disc. Before installation, the limiting block, the connecting screw rod and the connecting rod are welded. During installation, the connecting rod slides into the connecting disc, the bolt is tightened for positioning, the connecting rod and the connecting screw penetrate through the movable through groove and the expansion sealing piece and abut against the limiting disc till the connecting screw is in threaded connection with the expansion nut, the welding position is protected, water vapor erosion is reduced, and rusting and breakage are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ceiling keels, in particular to a quick-assembling light steel keel. Background Art

[0002] Ceiling keels are metal frame systems used in building decoration to support and fix ceiling materials, providing a structural foundation and stability for interior decoration. Ceiling keels are usually composed of main keels and secondary keels. The main keels bear the main load-bearing function, while the secondary keels are used to increase the local support strength. These keel materials are generally made of lightweight steel, cold-rolled into shape, with good strength and durability. During installation, they are connected to the building structure through hanging parts to form a stable ceiling frame. The advantages of the ceiling keel system lie in its lightness, quick installation, easy adjustment, and flexible layout and shape change according to design requirements. In addition, ceiling keels also have additional functions such as fire prevention, moisture resistance, and sound insulation, and are suitable for various commercial spaces, offices, residences, and other occasions. During the construction process, it should be carried out strictly in accordance with the design drawings and relevant specifications to ensure the safety and aesthetics of the ceiling. With the development of building technology, the ceiling keel system is also constantly innovating and improving to meet higher building standards and aesthetic requirements.

[0003] Currently, for existing ceiling keels, expansion bolts need to be fixed on the ceiling first, and then the expansion bolts are welded to the hanging arms to complete the preparation work for installing the ceiling keels. During long-term use, especially in cities with relatively high humidity in the south, the expansion bolts and the hanging arms are basically exposed to the air. After long-term moisture erosion, the welded joints of the expansion bolts and the hanging arms will rust, reducing the structural strength, and then resulting in a short lifespan of the ceiling.

[0004] Therefore, a quick-assembling light steel keel is proposed to solve or alleviate the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a quick-assembling light steel keel.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A quick-assembling light steel keel includes a keel strip with a C-shaped cross-section, a telescopic sleeve, and a connecting rod;

[0008] The top surface of the telescopic sleeve is fixedly connected with a limiting disc, and the bottom surface of the telescopic sleeve is fixedly connected with a connecting disc. The connecting disc is slidably connected to the top surface of the keel strip. The upper end of the connecting rod passes through the keel strip and the connecting disc and then enters the telescopic sleeve. The upper end of the connecting rod abuts against the limiting disc, and a connecting screw rod penetrating the limiting disc is fixedly connected to the upper end of the connecting rod. The lower end of the connecting rod is fixedly connected with a limiting screw head abutting against the keel strip, and a sealing piece is arranged at the position where the connecting rod penetrates the connecting disc.

[0009] Preferably, a stepped groove with a gradually decreasing aperture is formed upward on the bottom surface of the limiting disc, and a limiting block embedded in the stepped groove is fixedly connected between the connecting rod and the connecting screw rod.

[0010] Preferably, the sealing piece is a circular nitrile rubber sheet, and the inner diameter of the inner circle of the sealing piece is smaller than the outer diameter of the connecting rod.

[0011] Preferably, a moving through groove having the same length direction as the keel strip is formed on the top surface of the keel strip. A slide rail is fixedly connected to the top surface of the keel strip. An opening groove is formed at one end of the slide rail, and a sliding groove communicating with the opening groove is formed on the top surface of the slide rail. The sliding groove overlaps with the moving through groove. The connecting disc is rotatably connected in the slide rail, and the connecting rod penetrates through the sliding groove and the moving through groove.

[0012] Preferably, moving through grooves are formed on the top surface of the slide rail on both sides of the sliding groove. Threaded through holes are formed in the connecting disc, and fixing bolts penetrating the moving through grooves are threadedly connected to the threaded through holes.

[0013] Preferably, the moving through groove is also formed on the bottom surface of the keel strip. The moving through groove located below corresponds to the moving through groove above. The connecting rod penetrates upward from the moving through groove below, and the limiting screw head abuts against the bottom surface of the keel strip.

[0014] Preferably, a cross groove is formed on one side of the limiting screw head away from the connecting rod.

[0015] The utility model has the following beneficial effects:

[0016] Before installation, the limiting block, the connecting screw rod and the connecting rod are welded in the utility model. During installation, the connecting disc is slid in, the bolt is tightened for positioning, the connecting rod and the connecting screw rod pass through the moving through groove, the sealing piece is expanded and abuts against the limiting disc until the connecting screw rod is threadedly connected with the expansion nut, protecting the welded part, reducing the erosion of water vapor and avoiding rusting and breaking. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is Figure 1 the enlarged view of part A in

[0019] Figure 3 is a cross-sectional view of the present utility model;

[0020] Figure 4 is Figure 3 an enlarged view of part B in

[0021] Figure 5 is Figure 4 an enlarged view of part C in

[0022] Figure 6 is Figure 4 an enlarged view of part D in

[0023] 1. Keel strip; 2. Mobile through slot; 3. Slide rail; 4. Chute; 5. Opening slot; 6. Mobile through hole; 7. Connection plate; 8. Telescopic sleeve; 9. Limit disk; 10. Fixed bolt; 11. Limit screw head; 12. Connecting rod; 13. Limit block; 14. Connecting screw rod. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] A quick-assembling light steel keel, as Figures 1-6 shown, includes a keel strip 1 with a C-shaped cross-section, a telescopic sleeve 8, and a connecting rod 12;

[0026] A limit disk 9 is fixedly connected to the top surface of the telescopic sleeve 8, a connection plate 7 is fixedly connected to the bottom surface of the telescopic sleeve 8, the connection plate 7 is slidably connected to the top surface of the keel strip 1, and the upper end of the connecting rod 12 passes through the keel strip 1 and the connection plate 7 and then enters the telescopic sleeve 8.

[0027] The upper end of the connecting rod 12 abuts against the limit disk 9, and a connecting screw rod 14 passing through the limit disk 9 is fixedly connected to the upper end of the connecting rod 12. A stepped groove with a gradually decreasing aperture is opened upward on the bottom surface of the limit disk 9, and a limit block 13 embedded in the stepped groove is fixedly connected between the connecting rod 12 and the connecting screw rod 14.

[0028] The lower end of the connecting rod 12 is fixedly connected to a limit screw head 11 that abuts against the keel strip 1. A cross groove is opened on the side of the limit screw head 11 away from the connecting rod 12. A sealing sheet is provided at the position where the connecting rod 12 passes through the connection plate 7. The sealing sheet is a circular nitrile rubber sheet, and the inner diameter of the inner circle of the sealing sheet is smaller than the outer diameter of the connecting rod 12.

[0029] A moving through groove 2 identical in length direction to the keel strip 1 is formed in the top surface of the keel strip 1. A slide rail 3 is fixedly connected to the top surface of the keel strip 1. An opening groove 5 is formed at one end of the slide rail 3. A sliding groove 4 communicating with the opening groove 5 is formed in the top surface of the slide rail 3. The sliding groove 4 and the moving through groove 2 are arranged overlappingly. A connecting disc 7 is rotatably connected in the slide rail 3. A connecting rod 12 penetrates through the sliding groove 4 and the moving through groove 2. Moving through grooves 6 located on both sides of the sliding groove 4 are formed in the top surface of the slide rail 3. A threaded through hole is formed in the connecting disc 7. A fixing bolt 10 penetrating through the moving through groove 6 is threadedly connected to the threaded through hole. The moving through groove 2 is also formed in the bottom surface of the keel strip 1. The moving through groove 2 located below corresponds to the moving through groove 2 above. The connecting rod 12 penetrates upward from the moving through groove 2 below, and the limiting screw head 11 abuts against the bottom surface of the keel strip 1.

[0030] Before the installation of the present utility model, the limiting block 13, the connecting screw rod 14, and the connecting rod 12 need to be welded. During the actual installation process, the connecting disc 7 is slid into the opening groove 5 of the sliding groove 4, so that the telescopic sleeve 8 leaves the sliding groove 4. After determining the position of the connecting disc 7, by tightening the fixing bolt 10, the fixing bolt 10 can position the connecting disc 7, making the position of the connecting disc 7 in the slide rail 3 not easy to slide. Then, after the connecting rod 12, the connecting screw rod 14, and the limiting block 13 pass through the moving through groove 2, the expansion seal enters the telescopic sleeve 8. Until the connecting screw rod 14 penetrates through the stepped groove, the limiting block 13 is restricted in the stepped groove. Then, after the expansion nut is fixed on the ceiling, the construction worker uses a Phillips screwdriver to rotate the limiting screw head 11 through the Phillips slot. The limiting screw head 11 drives the connecting rod 12, the limiting block 13, and the connecting screw rod 14 to rotate. The connecting screw rod 14 will be threadedly connected to the expansion nut. Then, the limiting disc 9, the telescopic sleeve 8, and the seal can protect the welded joints of the connecting rod 12, the connecting screw rod 14, and the limiting block 13, and also protect most of the connecting rod 12, reducing its contact with the outside and being affected by water vapor, and avoiding the welded joints of the connecting rod 12, the connecting screw rod 14, and the limiting block 13 from rusting and breaking due to water vapor erosion.

[0031] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A quick-jointed light steel keel, characterized in that: It comprises a keel strip (1) with a C-shaped cross section, a telescopic sleeve (8), and a connecting rod (12); The top surface of the telescopic sleeve (8) is fixedly connected to a limiting plate (9), the bottom surface of the telescopic sleeve (8) is fixedly connected to a connecting plate (7), the connecting plate (7) is slidably connected to the top surface of the keel bar (1), the upper end of the connecting rod (12) passes through the keel bar (1) and the connecting plate (7) and then enters the telescopic sleeve (8), the upper end of the connecting rod (12) abuts against the limiting plate (9), and the upper end of the connecting rod (12) is fixedly connected to a connecting screw (14) that passes through the limiting plate (9), the lower end of the connecting rod (12) is fixedly connected to a limiting screw head (11) that abuts against the keel bar (1), and a sealing sheet is provided at the place where the connecting rod (12) passes through the connecting plate (7).

2. The quick-jointed light steel keel according to claim 1 is characterized in that: The bottom surface of the limiting plate (9) is provided with a stepped groove with a gradually decreasing aperture upwards, and a limiting block (13) embedded in the stepped groove is fixedly connected between the connecting rod (12) and the connecting screw rod (14).

3. The quick-joined light steel keel according to claim 1 is characterized in that: The sealing sheet is a ring-shaped nitrile rubber sheet, and the inner diameter of the inner ring of the sealing sheet is smaller than the outer diameter of the connecting rod (12).

4. The fast-joined light steel keel according to claim 1 is characterized in that: The top surface of the keel strip (1) is provided with a movable through groove (2) in the same length direction thereof, the top surface of the keel strip (1) is fixedly connected with a slide rail (3), one end of the slide rail (3) is provided with an open groove (5), the top surface of the slide rail (3) is provided with a slide groove (4) connected with the open groove (5), the slide groove (4) and the movable through groove (2) are arranged to overlap, the connecting plate (7) is rotatably connected in the slide rail (3), and the connecting rod (12) passes through the slide groove (4) and the movable through groove (2).

5. The quick-joined light steel keel according to claim 4 is characterized in that: The top surface of the slide rail (3) is provided with movable through grooves (6) located on both sides of the slide groove (4), and the connecting plate (7) is provided with a threaded through hole, and the threaded through hole is threadedly connected with a fixing bolt (10) that passes through the movable through groove (6).

6. The fast-joined light steel keel according to claim 5 is characterized in that: The movable through slot (2) is also provided on the bottom surface of the keel strip (1), the movable through slot (2) at the bottom is arranged corresponding to the movable through slot (2) at the top, the connecting rod (12) is arranged to pass through the movable through slot (2) at the bottom upward, and the limiting screw head (11) is in contact with the bottom surface of the keel strip (1).

7. The fast-joined light steel keel according to claim 1 is characterized in that: A cross groove is formed on the side of the limiting screw head (11) away from the connecting rod (12).

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