Quickly-mounted prefabricated stair assembly

Abstract

The utility model discloses a quick mounting prefabricated stair component, which comprises a stair beam and stair treads, one side of the stair beam is provided with an inserting rod through a mounting plate and a positioning column, the other end of the positioning column is fixedly connected with the stair beam through a limiting nut and a gasket, the lower side of the stair treads is provided with an inserting seat, and the inserting seat is fixedly connected with the stair beam. One side of each stair beam is provided with an inserting rod through a mounting plate, a positioning column, a limiting nut and a gasket, the lower side of each stair tread is in inserting fit with the corresponding inserting rod through the corresponding inserting seat, and a positioning mechanism is arranged between the two ends of each stair tread and the corresponding inserting rod. Therefore, the stair treads and the stair beams can be quickly mounted, the mounting and fixing stability is high, and the stair treads and the stair beams are convenient and quick to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, specifically a quick-installation prefabricated staircase component. Background Technology

[0002] Precast houses, also known as prefabricated modular buildings, are constructed using prefabricated components assembled in an industrialized manner, similar to assembly line production. Based on their main structural forms, they can be categorized as: panel prefabrication (e.g., large panel buildings); box prefabrication (e.g., reinforced concrete box buildings, wooden box buildings); and frame prefabrication (e.g., reinforced concrete frame prefabrication buildings, light steel prefabrication buildings, and light wood structure buildings). Prefabricated buildings have a wide range of applications, generally suitable for both civil and industrial buildings, especially for standard designs. They are particularly suitable for residential buildings, which often require prefabricated staircases. Prefabricated reinforced concrete staircases are constructed by prefabricating stair sections in a factory or on-site, and then transporting these prefabricated sections to the site for installation.

[0003] A prefabricated staircase with application number 202420682401.9 is described in the prior art. It includes a main module, a support plate for installing the base plate to ensure the stability of the base plate, and the support plate is connected to the stair beams in an interlocking manner to facilitate installation and disassembly, thereby increasing the speed of tread installation. A circular groove is opened on one side of the inner wall of the groove, and a locking component is set in the circular groove. This prefabricated staircase with quick installation has the advantages of fast tread installation and high practicality. However, it cannot adjust the installation spacing between the two stair beams, making it difficult to meet the installation needs of staircases of different widths. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-installation prefabricated staircase component to solve the problem in the prior art that the installation spacing between two stair beams cannot be adjusted, thus making it difficult to meet the installation and use of staircases of different widths.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-installation prefabricated stair assembly, including a stair beam and stair treads. One side of the stair beam is provided with a plug-in rod via an mounting plate and a positioning post. The other end of the positioning post is fixedly connected to the stair beam via a limiting nut and a washer. The underside of the stair tread is provided with a plug-in seat, and the plug-in rod is laterally plugged into the plug-in seat. A positioning mechanism is provided between both ends of the stair tread and the plug-in rod.

[0006] Furthermore, the connector is a rectangular support, and the connector rod is a columnar metal rod.

[0007] Furthermore, the connector has a connector groove inside, and the length of the connector groove is greater than the sum of the lengths of the two connector rods.

[0008] Furthermore, two ladder beams are provided in parallel, and mounting plates and mounting holes are provided on the outer sides of both ends of the ladder beams.

[0009] Furthermore, the positioning mechanism includes positioning plates hinged to the upper sides of both ends of the stair tread via connecting shafts, and the lower side of the positioning plates is provided with a snap-fit ​​groove that engages with the plug-in rod.

[0010] Furthermore, the inner wall of the snap-fit ​​groove is provided with a positioning protrusion, and the upper side of the plug rod is provided with a positioning groove that engages with the positioning protrusion, and multiple positioning grooves are provided at equal intervals.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model achieves rapid installation of stair treads and stair beams by means of a connecting rod on one side of the stair beam via an installation plate, positioning column, limit nut, and washer, and the connecting rod is connected to the bottom of the stair tread via a connecting seat. Moreover, the installation and fixing are highly stable and the disassembly and assembly are convenient and quick.

[0013] 2. This utility model has a plug-in slot inside the plug-in base, and the length of the plug-in slot is greater than the sum of the lengths of the two plug-in rods. This allows the spacing between the two stair beams to be adjusted by adjusting the depth of the plug-in rods inserted into the plug-in slot, thereby meeting the installation and use requirements of staircases of different widths.

[0014] 3. This utility model features a positioning mechanism between the two ends of the stair tread and the connecting rod. The positioning mechanism includes a positioning plate hinged to the upper side of both ends of the stair tread via a connecting shaft. The lower side of the positioning plate has a locking groove that engages with the connecting rod. The inner wall of the locking groove has a positioning protrusion. The upper side of the connecting rod has a positioning groove that engages with the positioning protrusion. Multiple positioning grooves are evenly spaced, allowing the lateral positioning between the stair tread and the connecting rod to be easily achieved by flipping the positioning plate and inserting the positioning protrusion into the positioning groove on the upper side of the connecting rod. Furthermore, by inserting the positioning protrusion into different positioning grooves, different widths of stairs can be installed and used. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a bottom view of the stair tread structure of this utility model;

[0018] Figure 3This is a schematic diagram of the mounting plate structure of this utility model.

[0019] In the diagram: 1. Stair beam; 2. Mounting plate; 3. Connecting rod; 4. Stair tread; 5. Connecting seat; 6. Gasket; 7. Mounting support plate; 8. Positioning post; 9. Limiting nut; 10. Mounting hole; 11. Connecting groove; 12. Connecting shaft; 13. Positioning plate; 14. Snap-fit ​​groove; 15. Positioning protrusion; 16. Positioning slot. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the utility model, a quick-installation prefabricated stair assembly includes a stair beam 1 and a stair tread 4. One side of the stair beam 1 is provided with a plug-in rod 3 through an mounting plate 2 and a positioning post 8. The other end of the positioning post 8 is fixedly connected to the stair beam 1 through a limiting nut 9 and a washer 6. The lower side of the stair tread 4 is provided with a plug-in seat 5, and the plug-in rod 3 is horizontally plugged into the plug-in seat 5, thereby realizing the quick installation of the stair tread 4 and the stair beam 1. Moreover, the installation and fixing stability is high, and the disassembly and assembly are convenient and quick.

[0022] like Figure 1 and Figure 2 As shown, in order to laterally position the stair tread 4 and the connecting rod 3, a positioning mechanism is also provided between the two ends of the stair tread 4 and the connecting rod 3. The positioning mechanism includes a positioning plate 13 hinged to the upper side of both ends of the stair tread 4 via a connecting shaft 12. The lower side of the positioning plate 13 is provided with a snap-fit ​​groove 14 that engages with the connecting rod 3. The inner wall of the snap-fit ​​groove 14 is provided with a positioning protrusion 15. The upper side of the connecting rod 3 is provided with a positioning groove 16 that engages with the positioning protrusion 15. Multiple positioning grooves 16 are provided at equal intervals, so that by flipping the positioning plate 13 and inserting the positioning protrusion 15 on the inner side of the positioning plate 13 into the positioning groove 16 on the upper side of the connecting rod 3, it is convenient to laterally position the stair tread 4 and the connecting rod 3. Moreover, by inserting the positioning protrusion 15 into different positioning grooves 16, different widths of stairs can be installed and used.

[0023] like Figure 1As shown, in order to install and fix the two ends of the ladder beam 1, the plug-in seat 5 is a rectangular support and the plug-in rod 3 is a columnar metal rod, which can improve the stability of the plug-in rod 3 and the plug-in seat 5. Two ladder beams 1 are provided in parallel, and the outer sides of both ends of the ladder beam 1 are provided with mounting plates 7 and mounting holes 10, which can facilitate the installation and fixation of both ends of the ladder beam 1 with bolts.

[0024] like Figure 2 and Figure 3 As shown, in order to position the plug rod 3 inserted into the plug socket 5, a plug groove 11 is also provided inside the plug socket 5, and the length of the plug groove 11 is greater than the sum of the lengths of the two plug rods 3. This allows the spacing between the two stair beams 1 to be adjusted by adjusting the depth of the plug rod 3 inserted into the plug groove 11, thereby meeting the installation and use requirements of stairs of different widths.

[0025] The working principle and usage process of this utility model are as follows: When in use, since the side of the ladder beam 1 is provided with a plug-in rod 3 through the mounting plate 2, positioning column 8, limit nut 9 and washer 6, the lower side of the stair tread 4 is connected to the plug-in rod 3 through the plug-in seat 5, thereby realizing the quick installation of the stair tread 4 and the ladder beam 1. Moreover, the installation and fixing stability is high, and the disassembly and assembly are convenient and quick.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick installation prefabricated stair assembly comprising a stringer (1) and a stair tread (4), characterized in that: The ladder beam (1) is provided with a plug-in rod (3) on one side through a mounting plate (2) and a positioning column (8), the other end of the positioning column (8) is fixedly connected with the ladder beam (1) through a limiting nut (9), the lower side of the stair tread (4) is provided with a plug-in seat (5), the plug-in rod (3) is transversely plugged and matched with the inside of the plug-in seat (5), and a positioning mechanism is arranged between the two ends of the stair tread (4) and the plug-in rod (3).

2. A quick installation pre-fabricated stair assembly according to claim 1, wherein: The plug-in seat (5) is a rectangular support, and the plug-in rod (3) is a columnar metal rod.

3. A quick installation pre-fabricated stair assembly according to claim 2, wherein: The plug-in seat (5) is provided with a plug-in groove (11) inside, and the length of the plug-in groove (11) is greater than the sum of the lengths of the two plug-in rods (3).

4. A quick installation pre-fabricated stair assembly as claimed in claim 1, wherein: The ladder beam (1) is provided with two parallel ladder beams (1), and the outer sides of the two ends of the ladder beam (1) are provided with mounting support plates (7) and mounting holes (10).

5. A quick installation pre-fabricated stair assembly as claimed in claim 1, wherein: The positioning mechanism comprises a positioning plate (13) which is hingedly connected to the upper sides of the two ends of the stair tread (4) through a connecting shaft (12), and the lower side of the positioning plate (13) is provided with a clamping groove (14) which is clamped and matched with the plug-in rod (3).

6. A quick installation pre-fabricated stair assembly according to claim 5, wherein: The inner wall of the clamping groove (14) is provided with a positioning protrusion (15), the upper side of the plug-in rod (3) is provided with a positioning groove (16) which is plugged and matched with the positioning protrusion (15), and a plurality of positioning grooves (16) are equidistantly arranged.

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