Ladder-column-free type cantilever stair structure

Abstract

The utility model discloses a non-ladder column type overhanging stair structure, which relates to the technical field of stair structures, and comprises a stair group, the stair group comprises first stair steps and second stair steps, newly added beams are arranged on one side of the bottom of a plurality of first stair steps and one side of the top of a plurality of second stair steps, and the newly added beams are arranged on the other side of the bottom of the first stair steps and on one side of the top of the second stair steps. Fixing frames are arranged at the tops of the first stair steps and the bottoms of the second stair steps correspondingly, extension plates are arranged on one sides of the fixing frames correspondingly, and clamping plates are arranged at the bottom ends of the fixing frames of the first stair steps and the top ends of the fixing frames of the second stair steps correspondingly. And two cross beam plates are arranged in the newly-added beam. By arranging a series of structures, the staircase structure is high in space permeability, space is saved, ladder columns and part of platform structures are omitted, the staircase structure is suitable for narrow sites, the firmness of the positions, without the ladder columns, of the staircase structure is higher, and the fracture risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of staircase structure technology, specifically a column-free cantilever staircase structure. Background Technology

[0002] Staircases are structural components in buildings that serve as vertical transportation links between floors, connecting different floors when there are significant height differences. Staircases are important components that connect different floors in a building, and their design must take into account functionality, safety, and space efficiency.

[0003] Most existing staircases are supported by stair columns. The column structure can cause visual obstruction, take up a lot of space, and easily lead to wasted indoor space. In addition, the connection between stair treads is mostly directly using a one-piece steel frame. The one-piece steel frame is prone to deformation, which can cause breakage at the connection point of the stair treads, posing certain safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a column-free cantilever staircase structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a column-free cantilevered staircase structure, comprising a staircase assembly, wherein the staircase assembly includes first stair treads and second stair treads, wherein additional beams are provided on one side of the bottom of several first stair treads and the top of several second stair treads, wherein fixed frames are provided on the top of several first stair treads and the bottom of several second stair treads, wherein an extension plate is provided on one side of each fixed frame, wherein snap-fit ​​plates are provided at the bottom of the fixed frame of the first stair treads and the top of the fixed frame of the second stair treads, and wherein two crossbeam plates are provided inside the additional beams, wherein one side of each crossbeam plate extends through the additional beams into the interior of the corresponding first stair treads and second stair treads.

[0006] Preferably, a fastening plate is provided on the other side of the crossbeam plate, and a plurality of expansion screws are provided on one side of the fastening plate. One side of the plurality of expansion screws extends through the fastening plate into the interior of the new beam. The fastening plate is fixedly connected to the crossbeam plate, and the expansion screws install the fastening plate inside the new beam, so that the crossbeam plate is fixed tightly and avoids the phenomenon of falling off.

[0007] Preferably, a bottom reinforcing plate is provided at the bottom end of the first stair tread at the bottom. The bottom end of the bottom reinforcing plate is provided with a bottom surface. The bottom surface and the bottom reinforcing plate work together to fix the first stair tread at the bottom, so that the bottom of the stair group is limited and the bottom of the stair group will not shift during use, thereby improving the stability of the column-free cantilever staircase structure.

[0008] Preferably, a base plate is provided at the bottom end of the bottom surface, and a corresponding bottom reinforcing plate is provided at the bottom of the base plate. A reinforcing steel column is connected between the base plate and the bottom reinforcing plate. The top of the reinforcing steel column extends to the bottom reinforcing plate, and the bottom of the reinforcing steel column extends out of the base plate. Nuts are threaded to both the top and bottom of the reinforcing steel column. The reinforcing steel column penetrates through the bottom surface, fixing the base plate and the bottom reinforcing plate to the top and bottom of the bottom surface, thereby reinforcing the bottom of the staircase assembly and ensuring that the column-free cantilever staircase structure will not sway during use.

[0009] Preferably, the top and bottom ends of the extension plate are provided with reinforcing ribs, and the snap-fit ​​plate matches the reinforcing ribs. When the first stair tread and the second stair tread are assembled, the extension plate is inserted into the corresponding snap-fit ​​plate, and the reinforcing ribs support the inside of the snap-fit ​​plate, so that the connection position of the first stair tread and the second stair tread can support each other, thereby improving the stability of the connection between the first stair tread and the second stair tread and avoiding the phenomenon of breakage between stair treads at different positions during the use of the column-free cantilever stair structure.

[0010] Preferably, the outer surface of the fixed frame is cast with a concrete platform, which encloses the fixed frame, the snap plate and the extension plate, making the connection between the first stair tread and the second stair tread flatter and stronger.

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

[0012] 1. The column-free cantilever staircase structure uses newly added beams and internal crossbeams to support the first and second stair treads. This eliminates the need for independent columns, allowing the load of the treads to be transferred to the newly added beams, then to the main structure, and finally borne by the main building. This design enhances the spatial permeability of the staircase, saves space, eliminates the need for columns and some platform structures, and is suitable for narrow spaces.

[0013] 2. This column-free cantilever staircase structure uses a snap-fit ​​plate and an extension plate at the connection point between the first and second stair treads. The extension plate is inserted into the snap-fit ​​plate, allowing the first and second stair treads to support each other. This increases the strength of the column-free section of the staircase structure and reduces the risk of breakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the bottom reinforcing plate structure of this utility model;

[0016] Figure 3This is a schematic diagram of the newly added beam portion of this utility model;

[0017] Figure 4 This is a schematic diagram of the fixed frame structure of this utility model.

[0018] In the diagram: 1. Staircase assembly; 101. First stair tread; 102. Second stair tread; 2. Beam plate; 3. New beam; 4. Concrete platform; 5. Bottom surface; 6. Bottom reinforcement plate; 7. Reinforced steel column; 8. Expansion bolt; 9. Fastening plate; 10. Fixed frame; 11. Clip-on plate; 12. Extension plate; 13. Reinforcing rib; 14. Base plate. 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] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 4As shown, this embodiment of the column-free cantilever staircase structure includes a staircase assembly 1, which contains first stair treads 101 and second stair treads 102. Additional beams 3 are provided on one side of the bottom of several first stair treads 101 and the top of several second stair treads 102. One side of the additional beams 3 is connected to the main building structure, supporting the bottom of the first stair treads 101 and the top of the second stair treads 102. This allows the load of the first stair treads 101 and the second stair treads 102 to be transmitted to the additional beams 3, and then from the additional beams 3 to the main building structure, where the main building structure bears the load. Fixed frames 10 are provided on the top of several first stair treads 101 and the bottom of several second stair treads 102. The fixed frames 10 are parallel to the ground to form platforms for easier walking. One side of the first stair tread 101 is provided with an extension plate 12. The bottom of the fixing frame 10 of the first stair tread 101 and the top of the fixing frame of the second stair tread 102 are provided with snap-fit ​​plates 11. The extension plate 12 can be inserted into the snap-fit ​​plates 11 to connect the top of the first stair tread 101 and the bottom of the second stair tread 102 together, thereby improving the sturdiness at the connection point of the first stair tread 101 and the second stair tread 102. The interior of the newly added beam 3 is provided with two crossbeam plates 2. One side of the crossbeam plates 2 extends through the newly added beam 3 into the interior of the corresponding first stair tread 101 and the second stair tread 102. The crossbeam plates 2 provide stable support for the corresponding first stair tread 101 and the second stair tread 102, making the connection between the first stair tread 101 and the second stair tread 102 and the newly added beam 3 tighter and reducing the risk of falling off.

[0022] Specifically, a fastening plate 9 is provided on the other side of the crossbeam plate 2. Several expansion screws 8 are provided on one side of the fastening plate 9. One side of the expansion screws 8 extends through the fastening plate 9 into the interior of the new beam 3. The fastening plate 9 is fixedly connected to the crossbeam plate 2. The expansion screws 8 install the fastening plate 9 inside the new beam 3, so that the crossbeam plate 2 is fixed tightly and avoids the phenomenon of falling off.

[0023] Furthermore, a bottom reinforcement plate 6 is provided at the bottom end of the first stair step 101 at the bottom. The bottom reinforcement plate 6 has a bottom surface 5 at its bottom end. The bottom surface 5 and the bottom reinforcement plate 6 work together to fix the first stair step 101 at the bottom, thereby limiting the bottom of the stair group 1 and preventing displacement of the bottom of the stair group 1 during use, thus improving the stability of the column-free cantilever staircase structure.

[0024] Furthermore, a base plate 14 is provided at the bottom end of the bottom surface 5, and a bottom reinforcing plate 6 is provided at the bottom of the base plate 14. A reinforcing steel column 7 is connected between the base plate 14 and the bottom reinforcing plate 6. The top of the reinforcing steel column 7 extends to the bottom reinforcing plate 6, and the bottom of the reinforcing steel column 7 extends out of the base plate 14. Nuts are threaded to both the top and bottom of the reinforcing steel column 7. The reinforcing steel column 7 penetrates the bottom surface 5, fixing the base plate 14 and the bottom reinforcing plate 6 to the top and bottom of the bottom surface 5, thereby reinforcing the bottom of the staircase assembly 1 and ensuring that the column-free cantilever staircase structure will not sway during use.

[0025] Furthermore, the top and bottom ends of the extension plate 12 are provided with reinforcing ribs 13. The snap-fit ​​plate 11 matches the reinforcing ribs 13. When the first stair tread 101 and the second stair tread 102 are assembled, the extension plate 12 is inserted into the corresponding snap-fit ​​plate. The reinforcing ribs 13 support the inside of the snap-fit ​​plate, so that the connection position of the first stair tread 101 and the second stair tread 102 can support each other, improve the stability of the connection between the first stair tread 101 and the second stair tread 102, and avoid the phenomenon of breakage between stair treads at different positions during the use of the column-free cantilever stair structure.

[0026] Furthermore, a concrete platform 4 is poured on the outer surface of the fixed frame 10. The concrete platform 4 encloses the fixed frame 10, the snap plate, and the extension plate 12, making the connection between the first stair tread 101 and the second stair tread 102 smoother and more robust.

[0027] The usage method of this embodiment is as follows: This column-free cantilever staircase structure supports the stair treads through the newly added beam 3 connected to the main building. The bottom of the first stair tread 101 and the top of the second stair tread 102 are connected to the newly added beam 3 through the crossbeam plate 2, which provides support. The load of the first stair tread 101 and the second stair tread 102 is transmitted to the newly added beam 3, and then transferred to the main structure by the newly added beam 3. Finally, the main building bears the load, eliminating the need for independent stair columns. The top of the first stair tread 101 and the bottom of the second stair tread 102 are assembled by inserting the extension plate 12 into the snap-fit ​​plate 11. The reinforcing rib 13 supports the inside of the snap-fit ​​plate, so that the connection position of the first stair tread 101 and the second stair tread 102 can support each other, improving the stability of the connection between the first stair tread 101 and the second stair tread 102 and avoiding the phenomenon of breakage between stair treads at different positions during use of the column-free cantilever staircase structure.

[0028] 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 free-standing cantilevered stair structure comprising a stair set (1), characterized in that: The stair group (1) contains first stair steps (101) and second stair steps (102), the bottom of the first stair steps (101) and the top of the second stair steps (102) are provided with new beams (3), the top of the first stair steps (101) and the bottom of the second stair steps (102) are provided with fixed frames (10), one side of the fixed frame (10) is provided with an extension plate (12), the bottom end of the fixed frame (10) of the first stair step (101) and the top end of the fixed frame (10) of the second stair step (102) are provided with clamping plate pieces (11), the inside of the new beam (3) is provided with two cross beam plates (2), one side of the cross beam plate (2) extends through the new beam (3) to the inside of the corresponding first stair step (101) and second stair step (102).

2. The column-free overhanging stair structure according to claim 1, characterized in that: The other side of the cross beam plate (2) is provided with a fastening plate (9), one side of the fastening plate (9) is provided with a plurality of expansion screws (8), one side of the expansion screws (8) extends through the fastening plate (9) to the inside of the new beam (3).

3. The column-free overhanging stair structure according to claim 1, characterized in that: The bottom end of the lowermost first stair step (101) is provided with a bottom reinforcing plate (6), and the bottom end of the bottom reinforcing plate (6) is provided with a bottom surface (5).

4. The column-free overhanging stair structure according to claim 3, characterized in that: The bottom end of the bottom surface (5) is provided with a bottom plate (14), and the bottom plate (14) corresponds to the bottom reinforcing plate (6), and the bottom plate (14) and the bottom reinforcing plate (6) are connected by a reinforcing steel column (7), the top of the reinforcing steel column (7) extends to the bottom reinforcing plate (6), the bottom of the reinforcing steel column (7) extends out of the bottom plate (14), and the top and bottom of the reinforcing steel column (7) are threadedly connected with nuts.

5. The column-free overhanging stair structure according to claim 1, wherein: The top end and the bottom end of the extension plate (12) are provided with reinforcing ribs (13), and the clamping plate pieces (11) are matched with the reinforcing ribs (13).

6. The column-free overhanging stair structure according to claim 1, wherein: The outer surface of the fixed frame (10) is poured with a concrete platform (4).

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