Modular stair installation structure

Abstract

The application relates to the technical field of staircases, and particularly discloses a modular staircase mounting structure which comprises a side beam, a bent piece, a tread surface layer and a kick surface layer; the side beam is provided with a hooking piece; the bent piece is triangularly bent by an installation plate, a tread surface supporting plate and a kick surface supporting plate, the installation plate is hookingly connected with the hooking piece, and the installation plate is further fixed to the side beam through fasteners; the tread surface layer is arranged on the tread surface supporting plate, and the kick surface layer is arranged on the front side of the kick surface supporting plate. The application realizes quick positioning and temporary support through hooking, further guarantees the final connection strength through bolt fastening, and effectively improves the installation efficiency, precision and overall stability of the staircase. The structure has high modularization degree and is convenient for standardized production and on-site assembly.

Description

Technical Field

[0001] This invention relates to the field of staircase technology, and in particular to a modular staircase installation structure. Background Technology

[0002] Steel staircases, as a common building structure, are widely used in various buildings due to their high strength, fast construction, and flexible design. Traditional steel staircases mostly rely on on-site welding or direct bolt connection to fix the steps to the stair beams. This process requires high construction precision and its overall efficiency needs improvement.

[0003] In existing technologies, some prefabricated solutions have emerged to improve traditional processes. For example, Chinese Patent Publication No. CN210563058U discloses a prefabricated cold-formed thin-walled steel staircase, which connects the inclined beams and treads with self-tapping screws and fills the interior with lightweight materials, aiming to achieve weight reduction and sound insulation. While this design improves the degree of prefabrication to some extent, in practical applications, the positioning and fine-tuning of the treads are still not convenient enough, and there is still room for improvement in the ease and efficiency of the installation process.

[0004] Overall, existing steel staircase installation methods still generally suffer from high installation difficulty and low efficiency. Specifically, this manifests as: difficulty in on-site adjustments and inability to compensate for structural errors; each step of the staircase must be individually aligned and fixed, making the process cumbersome; in addition, welding operations also pose safety risks.

[0005] Therefore, there is an urgent need for a modular staircase installation structure that can achieve rapid and accurate positioning and can be flexibly adjusted, in order to further improve construction efficiency and installation quality. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a modular staircase installation structure to solve the above problems.

[0007] A modular staircase installation structure, comprising:

[0008] At least one side beam, wherein a plurality of hooks are spaced apart along its length;

[0009] Multiple bent components are arranged sequentially along the length of the side beam. Each bent component includes an integrally bent mounting plate, a tread support plate, and a riser support plate, which together form a triangular support structure. The mounting plate is hooked and connected to the hook component, and the mounting plate is also fixedly connected to the side beam by fasteners.

[0010] The tread surface layer is laid on the tread support plate;

[0011] A kick surface layer is disposed on the front side of the kick plate.

[0012] Specifically, a tread base plate is also provided between the tread support plate and the tread surface layer.

[0013] Specifically, a triangular cavity is formed between the kick plate and the kick surface layer, and a filling layer is provided inside the triangular cavity.

[0014] Specifically, the mounting plate has several spaced hanging holes, and the hooks are inserted into the hanging holes.

[0015] Specifically, the cross-sectional shape of the side beam is C-shaped, I-shaped, rectangular, or circular.

[0016] Specifically, the slope of the mounting plate is θ, the step width of the tread surface layer is b, and the step height of the riser surface layer is h, satisfying the following conditions: θ = arctan(h / b) and 30° ≤ θ ≤ 35°.

[0017] Specifically, the tread surface layer has a downward-bending right-angle bend at one end near the kick surface layer, and the upper end of the kick surface layer is engaged with the inside of the right-angle bend.

[0018] Specifically, the end of the tread surface layer away from the kick surface layer is connected to the lower end of the adjacent kick surface layer via an L-shaped bracket.

[0019] Specifically, the side beam is provided with a plurality of first mounting holes spaced apart along its length; the mounting plate is provided with corresponding second mounting holes; the fasteners pass through the second mounting holes and the first mounting holes in sequence to fix the bent part to the side beam.

[0020] Specifically, both the first mounting hole and the second mounting hole are elongated holes, and the length direction of the first mounting hole is perpendicular to the length direction of the second mounting hole.

[0021] The beneficial effects of this invention are:

[0022] This invention discloses a modular staircase installation structure, comprising a side beam, a bent component, a tread surface layer, and a riser surface layer. The side beam is equipped with hooks; the bent component is formed by bending a mounting plate, a tread support plate, and a riser support plate in a triangular shape, with the mounting plate hooked to the hooks and further fixed to the side beam by fasteners; the tread surface layer is located on the tread support plate, and the riser surface layer is located on the front side of the riser support plate. This application achieves rapid positioning and temporary support through hooks, combined with bolt tightening to ensure final connection strength, effectively improving the installation efficiency, accuracy, and overall stability of the staircase. This structure has a high degree of modularity, facilitating standardized production and on-site assembly. Attached Figure Description

[0023] Figure 1 This is a perspective view of the modular staircase installation structure of Embodiment 1 of this application;

[0024] Figure 2 This is a partial schematic diagram of the modular staircase installation structure of Embodiment 1 of this application;

[0025] Figure 3 This is an exploded view of the modular staircase installation structure of Embodiment 1 of this application;

[0026] Figure 4 This is a perspective view of the modular staircase installation structure of Embodiment 2 of this application;

[0027] Figure 5 This is a perspective view of the modular staircase installation structure of Embodiment 3 of this application;

[0028] Figure 6 This is a perspective view of the modular staircase installation structure of Embodiment 4 of this application.

[0029] The attached diagram is labeled as follows: side beam 1, hook 11, bending part 2, mounting plate 21, tread support plate 22, riser support plate 23, fastener 3, tread surface layer 4, riser surface layer 5, tread base plate 6, filling layer 7, hanging hole 211, right angle bend 41, L-shaped corner bracket 8, first mounting hole 13, second mounting hole 212. Detailed Implementation

[0030] This invention provides a modular staircase installation structure. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the following detailed description, with reference to the accompanying drawings and embodiments, further illustrates the invention. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0031] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0032] Example 1

[0033] Please refer to Figure 1-3As shown, this embodiment discloses a modular staircase installation structure, including at least one side beam 1, multiple bent parts 2, fasteners 3, tread surface layer 4, and riser surface layer 5. The fasteners 3 can be screws and nuts. The side beam 1 has multiple hooks 11 spaced apart along its length. The side beam 1 can be set as a single beam (suitable for wall-mounted staircases) or two beams (suitable for freestanding staircases) according to the staircase design requirements. Its installation angle is consistent with the slope of the staircase, enabling oblique installation. The spacing of the hooks 11 on the side beam 1 can be adjusted according to the module of the stair treads to accommodate different floor heights and tread heights.

[0034] Multiple bent components 2 are arranged sequentially along the length of the side beam 1. Each bent component 2 is integrally bent from a single piece of cold-formed thin-walled steel plate after laser cutting. Its length (i.e., the dimension in the width direction of the staircase) can be precisely cut according to the specific staircase width, thus easily matching staircase designs of different widths. The bent components 2 form a triangular support frame, which consists of a mounting plate 21, a tread support plate 22, and a riser support plate 23.

[0035] Mounting plate 21 is initially hooked to hook member 11 on side beam 1 through hanging holes 211, providing temporary positioning and load-bearing for subsequent installation. Mounting plate 21 is then finally fixed to side beam 1 with fasteners 3, forming a double safety net to ensure the stability of the connection. Tread surface layer 4 is laid and fixed on tread support plate 22, while riser surface layer 5 is installed on the front side of riser support plate 23.

[0036] The standardized and modular design of edge beam 1 and bending component 2 provides a foundation for the diversification of staircase shapes. By adjusting the arrangement of edge beam 1 (such as parallel, fan-shaped, or rotating) and the installation angle and number of bending components 2, various shapes such as straight staircases, trapezoidal staircases, scissor staircases, and spiral staircases can be easily achieved to meet different architectural space and aesthetic needs.

[0037] The complete installation process is as follows:

[0038] First, according to the design drawings, the prefabricated side beam 1 with hooks 11 is fixed according to the preset stair slope and position. The spacing between the first mounting hole 13 on the side beam 1 and the hook 11 adopts a fixed module and is processed by laser cutting. In particular, the first mounting hole 13 is preferably processed into an elongated oval hole to ensure positioning accuracy and provide adjustment margin for installation.

[0039] Next, the bent component 2 (i.e., the stair tread frame) is installed. The installation sequence is from bottom to top, starting with the first tread. The operator aligns the hanging hole 211 on the upper part of the mounting plate 21 of the bent component 2 with the hook 11 on the side beam 1, lifts it up and gently lowers it to achieve the initial hooking of "lift and hang". This step allows the bent component 2 to be stably suspended without additional support, greatly facilitating subsequent operations. Next, the second mounting hole 212 on the lower part of the mounting plate 21 is aligned with the first mounting hole 13 on the side beam 1, and high-strength bolts are inserted as fasteners 3 for "initial tightening, secondary tightening, and final tightening" of the fastening operation. Through four simple steps of "lift, hang, lower, and tighten", the quick and precise installation of a stair tread frame can be completed.

[0040] Next, the surface layer is installed. This part of the installation follows a bottom-up sequence. First, the tread surface layer 4 and the riser surface layer 5 are pre-assembled into an L-shaped module at the factory or on-site. During installation, starting from the bottom first level, the tread surface layer 4 of this L-shaped module is laid and fixed onto the corresponding level's tread support plate 22, while the riser surface layer 5 is attached to the front side of the corresponding level's riser support plate 23, and horizontal and vertical alignment is performed. Then, the next level's L-shaped module is installed, and so on, level by level, until all surface layers are installed. The interior of the L-shaped module (i.e., the connection between the tread surface layer 4 and the riser surface layer 5, and the cavity formed by the module and the bending component 2) can be pre-filled with a filler layer 7. This method of prefabricating the surface layer into modular components and installing them from bottom to top fully reflects the characteristics of industrialized standard products, further improving on-site assembly efficiency and installation accuracy.

[0041] This application provides excellent stability through the triangular support structure of the bent component 2, while the hook connection between the hook component 11 and the mounting plate 21 enables rapid initial positioning and load-bearing, and is further reinforced by fasteners 3, combining ease of installation with reliable connection. The modular design of the side beam 1, bent component 2, tread surface layer 4, and riser surface layer 5 enables standardized production and rapid on-site assembly of the staircase.

[0042] Furthermore, a tread base plate 6 is provided between the tread support plate 22 and the tread surface layer 4. The tread base plate 6 can serve as a leveling layer to ensure the flatness of the tread surface layer 4; at the same time, it can also enhance the overall tread rigidity and distribute the load, and different materials can be selected as needed to improve sound insulation or thermal insulation performance.

[0043] Furthermore, a triangular cavity is formed between the riser plate 23 and the riser surface layer 5, and a filling layer 7 is provided inside the triangular cavity. The filling layer 7 fills the triangular cavity and mainly serves to reduce sound and noise, preventing hollow resonance sound during staircase use. It also has a fireproof function, effectively preventing the spread of flames and toxic fumes through the internal cavity of the staircase structure in the event of a fire, thus improving the overall performance of the staircase. The filling layer 7 is pre-filled before installation to ensure a dense filling.

[0044] As a preferred embodiment, the filling layer 7 can be made of Class A non-combustible materials such as rock wool, glass wool, and aluminum silicate fiber wool, which have both excellent sound insulation and fire resistance properties. Its sound insulation principle is mainly based on the fact that the multi-fiber loose structure contains a large amount of still air, which can effectively absorb and block the propagation of sound waves; its fire resistance principle is mainly based on the fact that the material itself is an inorganic substance with an extremely high melting point (such as rock wool exceeding 1000℃), which does not burn or release flammable gases at high temperatures, forming a physical insulation layer and delaying heat transfer.

[0045] Furthermore, the mounting plate 21 has several spaced hanging holes 211, through which the hooks 11 are inserted. The cooperation between the hanging holes 211 and the hooks 11 allows the bent part 2 to be quickly and accurately hooked onto the side beam 1, simplifying the alignment steps during installation, facilitating the subsequent fixing of the fasteners 3, and improving installation efficiency.

[0046] As a preferred embodiment, the side beam 1 has a C-shaped cross-section, which has good bending resistance, and its open structure facilitates the welding and fixing of the hook 11 and the installation of the bending part 2, resulting in high structural strength.

[0047] In a preferred embodiment, the slope θ of the mounting plate 21 and the edge beam 1 is 30°, but it is not limited to 30°. Furthermore, the slope θ of the mounting plate 21 and the edge beam 1 also satisfies the following condition: θ = arctan(h / b), where b is the tread width of the tread surface layer 4 and h is the tread height of the riser surface layer 5. This formula reflects the mathematical relationship between the stair slope and the tread dimensions, allowing for flexible adjustment of the slope angle according to actual design requirements to adapt to different architectural spaces and usage requirements.

[0048] In a preferred embodiment, the bent component 2 is manufactured using a cold bending process. The tread support plate 22 and the riser support plate 23 are bent at a 60° angle, and the riser support plate 23 and the mounting plate 21 are bent at a 90° angle. At this point, the angle between the mounting plate 21 and the tread support plate 22 is 30°. The mounting plate 21 and the tread support plate 22 are then welded together to form a stable right-angled triangular frame structure. The specific angles of 30°, 60°, and 90° constitute the stable right-angled triangular bent component 2, ensuring that the tread support plate 22 (stair tread) and the riser support plate 23 (stair riser) conform to ergonomic standards, while also guaranteeing that the bent component 2, as a load-bearing component, possesses good mechanical properties.

[0049] Furthermore, the tread surface layer 4 has a downward-bending right-angle bend 41 at one end near the riser surface layer 5, and the upper end of the riser surface layer 5 is engaged with the inner side of the right-angle bend 41. The right-angle bend 41 forms a natural limit and shield for the upper end of the riser surface layer 5, making the connection between the tread surface layer 4 and the riser surface layer 5 more aesthetically pleasing and neat, and enhancing the tightness of the connection between the two, preventing the riser surface layer 5 from tilting forward.

[0050] Furthermore, the end of the tread surface layer 4 furthest from the riser surface layer 5 is connected to the lower end of the adjacent riser surface layer 5 via an L-shaped bracket 8. The L-shaped bracket 8 provides a reliable connection between the outer edge of the tread surface layer 4 and the lower end of the next riser surface layer 5, effectively preventing displacement of the riser surface layer 5 during use and enhancing the integrity and stability of the entire staircase finishing system.

[0051] Furthermore, the side beam 1 is provided with multiple first mounting holes 13 spaced apart along its length; the mounting plate 21 is provided with corresponding second mounting holes 212; the fastener 3 passes through the second mounting holes 212 and the first mounting holes 13 in sequence to fix the bent part 2 to the side beam 1. The corresponding arrangement of the first mounting holes 13 and the second mounting holes 212 provides a clear path for the fastener 3 to pass through, ensuring that the bent part 2 can be firmly locked to the side beam 1 after initial hooking, forming a double insurance mechanism of hooking and bolt connection.

[0052] In a preferred embodiment, both the first mounting hole 13 and the second mounting hole 212 are elongated oval holes, and the length direction of the first mounting hole 13 is perpendicular to the length direction of the second mounting hole 212. The design of the elongated oval holes and their arrangement in the vertical direction allow the bent parts 2 to have a certain adjustment margin in both the height and horizontal directions during installation, which can effectively absorb construction errors and ensure the accuracy and consistency of the final installation position of all bent parts 2.

[0053] As a preferred embodiment, the tread surface layer 4 and the kick surface layer 5 can be made of marble, solid wood, artificial stone, ceramic tile, anti-slip rubber sheet, steel plate or other composite materials, and can be flexibly selected according to the usage environment and decoration requirements.

[0054] Example 2

[0055] Please refer to Figure 4 As shown, the main difference between this embodiment and the previous embodiment is that the cross-sectional shape of the side beam 1 is rectangular, which has high torsional stiffness and is suitable for staircase designs with higher requirements for overall structural stability, providing a stable support foundation for the bent part 2.

[0056] Example 3

[0057] Please refer to Figure 5 As shown, the main difference between this embodiment and the previous embodiment is that the cross-sectional shape of the side beam 1 is I-shaped, which has excellent bending resistance and can be applied to staircases with large spans or heavy loads.

[0058] Example 4

[0059] Please refer to Figure 6 As shown, the main difference between this embodiment and the previous embodiment is that the cross-sectional shape of the side beam 1 is circular, which has good isotropic properties and a simple and smooth appearance, making it suitable for staircase designs that pursue special aesthetic effects. At the same time, its closed section also has certain torsional resistance characteristics.

[0060] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. A modular staircase installation structure, characterized in that, include: At least one side beam (1), wherein a plurality of hooks (11) are provided at intervals along its length. Multiple bent components (2) are arranged sequentially along the length of the side beam (1). Each bent component (2) includes an integrally bent mounting plate (21), a tread support plate (22), and a kick support plate (23). The mounting plate (21), the tread support plate (22), and the kick support plate (23) together form a triangular support structure. The mounting plate (21) is hooked and connected to the hook component (11), and the mounting plate (21) is also fixedly connected to the side beam (1) by fasteners (3). The tread surface layer (4) is laid on the tread support plate (22); A kick surface layer (5) is disposed on the front side of the kick support plate (23); A triangular cavity is formed between the kick plate (23) and the kick surface layer (5), and a filling layer (7) is provided in the triangular cavity. The filling layer (7) is rock wool. The mounting plate (21) has a plurality of spaced hanging holes (211), and the hook (11) passes through the hanging holes (211); The side beam (1) is provided with a plurality of first mounting holes (13) spaced apart along its length; the mounting plate (21) is provided with corresponding second mounting holes (212); the fastener (3) passes through the second mounting holes (212) and the first mounting holes (13) in sequence to fix the bent part (2) to the side beam (1); Both the first mounting hole (13) and the second mounting hole (212) are elongated holes, and the length direction of the first mounting hole (13) is perpendicular to the length direction of the second mounting hole (212).

2. The modular staircase installation structure according to claim 1, characterized in that, A tread base plate (6) is also provided between the tread support plate (22) and the tread surface layer (4).

3. The modular staircase installation structure according to claim 1, characterized in that, The cross-sectional shape of the side beam (1) is C-shaped, I-shaped, rectangular or circular.

4. The modular staircase installation structure according to claim 1, characterized in that, The slope of the mounting plate (21) is θ, the step width of the tread surface layer (4) is b, and the step height of the kick surface layer (5) is h, satisfying the following conditions: θ = arctan(h / b) and 30° ≤ θ ≤ 35°.

5. A modular staircase installation structure according to claim 1, characterized in that, The tread surface layer (4) has a right-angle bend (41) that bends downward at one end near the kick surface layer (5), and the upper end of the kick surface layer (5) is engaged with the inside of the right-angle bend (41).

6. A modular staircase installation structure according to claim 1 or 5, characterized in that, The end of the tread surface layer (4) away from the kick surface layer (5) is connected to the lower end of the adjacent kick surface layer (5) via an L-shaped bracket (8).

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