Modular assembled indoor stainless steel stair

By using modular design and support components, the problem of inconvenient installation of traditional stainless steel staircases in limited indoor spaces has been solved, enabling convenient installation without the need for large hoisting equipment.

CN224363568UActive Publication Date: 2026-06-16JIANGSU XINQIBU STAIRCASE MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU XINQIBU STAIRCASE MFG CO LTD
Filing Date
2025-06-23
Publication Date
2026-06-16

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Abstract

The utility model relates to stainless steel stair technical field, and disclose a modular assembly type indoor stainless steel stair, including mutually assembled first ladder body and second ladder body, first ladder body and second ladder body are all by two side poles and a plurality of steps are composed, a plurality of steps all weld in two side poles inboard, the bottom of first ladder body and second ladder body all is equipped with support assembly, the left and right ends of first ladder body and second ladder body are welded with upper buckle respectively, the left and right ends of second ladder body are welded with the lower buckle compatible with upper buckle respectively, the bottom of lower buckle is fixedly connected with the clamping block respectively, the bottom of first ladder body and second ladder body is fixedly connected with the butt joint plate respectively, the top of butt joint plate is opened with two clamping slots respectively. This modular assembly type indoor stainless steel stair realizes the splicing assembly between two stainless steel stairs, and then can be installed without large hoisting equipment in the indoor.
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Description

Technical Field

[0001] This utility model relates to the field of stainless steel staircase technology, specifically a modular assembled indoor stainless steel staircase. Background Technology

[0002] A staircase is a structural component in a building that serves as a vertical transportation link between floors. It connects floors and provides access when there are significant differences in elevation. Even in multi-story and high-rise buildings where elevators or escalators are the primary means of vertical transportation, staircases are still necessary. Although high-rise buildings primarily use elevators, staircases are still required for escape in case of fire. A staircase consists of continuous flights of steps (also called stair runs), landings (resting platforms), and balustrades. The horizontal distance between the lowest and highest steps is the stair length, and the total height of the steps is the stair height. With the development of technology, some indoor staircases are also categorized as stainless steel staircases and concrete staircases, among others.

[0003] Traditional stainless steel staircases are usually fabricated as a whole and then hoisted and installed indoors. This method is only suitable for installation in large indoor spaces. Hoisting is difficult in limited indoor spaces, making this type of staircase difficult to install. Therefore, there is an urgent need for a modular, assembled indoor stainless steel staircase. Utility Model Content

[0004] The purpose of this invention is to provide a modular, assembled indoor stainless steel staircase to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a modular assembled indoor stainless steel staircase, including a first staircase and a second staircase assembled with each other, the first staircase and the second staircase are each composed of two side bars and multiple steps, the multiple steps are welded to the inside of the two side bars, and the bottom of the first staircase and the second staircase are each equipped with a support component;

[0006] The first and second ladders are respectively welded with upper buckles at their left and right ends. The second ladder is respectively welded with lower buckles that are compatible with the upper buckles at its left and right ends. The bottom of each lower buckle is fixedly connected with a locking block. The bottom of the first and second ladders is fixedly connected with a mating plate. The top of each mating plate has two locking slots.

[0007] Preferably, the card blocks are adapted to the card slots respectively, and the surface of the card blocks is provided with first threaded holes respectively.

[0008] Both the first and second ladders consist of two side bars and multiple steps. The steps are welded to the inside of the side bars. Support components are installed at the bottom of both the first and second ladders. During installation, the two side bars are first supported by the support components at the bottom left of the two side bars of the first and second ladders.

[0009] Preferably, the front and rear ends of the docking plate are respectively provided with second threaded holes that are adapted to the first threaded hole, and the second threaded holes at the front and rear ends of the docking plate are respectively bolted to the first threaded hole of the clamping block.

[0010] Preferably, a base plate is fixedly connected to the bottom right side of the first ladder body, and a positioning hole is provided on the base plate, with a positioning bolt installed in the positioning hole.

[0011] The bottom plate on the right side of the first ladder is fixed to the ground with positioning bolts to support and stabilize the two side rods. Then, the workers weld the steps between the two side rods in sequence. After the welding is completed, the lower buckles are welded to both ends of the second ladder. Then, the two side plates of the second ladder are pulled to insert the buckle at the bottom of the lower buckle into the slot at the top of the first ladder's connecting plate. Finally, the lower buckle is fixed to the buckle with bolts.

[0012] Preferably, the support assembly includes a triangular base, the bottom of which has two support screw holes, and the interior of each of the two support screw holes is threaded with a threaded post, the bottom of which is fixedly connected with a support cylinder.

[0013] Preferably, the inside of the support cylinder is threaded with support columns, and the bottom of each support column is rotatably connected with a support seat.

[0014] By using the two support screw holes at the bottom of the triangular seat, the threaded column can be removed from the support screw holes, which facilitates the installation and removal of the support cylinder and makes it easier to provide support when hoisting is difficult.

[0015] Preferably, the top of the triangular base is fixedly connected to the docking plate.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] Firstly, in this utility model, both the first and second ladders consist of two side bars and multiple steps. The steps are welded to the inside of the side bars. Support components are installed at the bottom of both the first and second ladders. During installation, the two side bars are first supported by the support components at the bottom left of the two side bars. Then, the bottom plate at the bottom right of the first ladder is fixed to the ground with positioning bolts to support and stabilize the two side bars. Subsequently, the workers weld the steps between the two side bars in sequence. After welding, the lower clips are welded to both ends of the second ladder. Then, the two side plates of the second ladder are pulled to insert the clips at the bottom of the lower clips into the slots at the top of the connecting plate of the first ladder. The lower clips are then fixed to the clips with bolts. The upper clips are then snapped onto the lower clips and welded to the side bars of the first ladder. Then, the steps between the two side bars of the second ladder are welded in sequence to achieve the splicing and assembly of the two stainless steel staircases. Thus, installation can be carried out indoors without the need for large hoisting equipment.

[0018] Secondly, this utility model allows the threaded column to be removed from the support screw holes by providing two support screw holes at the bottom of the triangular seat, which facilitates the installation and disassembly of the support cylinder and makes it easier to provide support when hoisting is difficult. The height of the support component can be adjusted as needed by providing the support column. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the exploded left view of the present invention;

[0021] Figure 3 This is a schematic diagram of the right-side structure of the present invention in the event of an explosion.

[0022] Figure 4 This is a cross-sectional view and a right-view structural diagram of the support component and docking plate of this utility model.

[0023] The components are: 1. First ladder body; 2. Second ladder body; 11. Side rod; 12. Step; 13. Upper buckle; 14. Lower buckle; 15. Buckle block; 16. Connecting plate; 17. Base plate; 18. Positioning bolt; 19. Triangular seat; 20. Threaded column; 21. Support cylinder; 22. Support column; 23. Support base. Detailed Implementation

[0024] 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.

[0025] This utility model provides the following technical solution:

[0026] Example 1

[0027] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A modular assembled indoor stainless steel staircase includes a first stair body 1 and a second stair body 2 assembled together. Both the first stair body 1 and the second stair body 2 are composed of two side bars 11 and multiple steps 12. The multiple steps 12 are welded to the inside of the two side bars 11. Support components are installed at the bottom of both the first stair body 1 and the second stair body 2.

[0028] Upper buckles 13 are welded to the left and right ends of the first ladder 1 and the second ladder 2, respectively. Lower buckles 14 that are compatible with the upper buckles 13 are welded to the left and right ends of the second ladder 2, respectively. A locking block 15 is fixedly connected to the bottom of the lower buckle 14, and a docking plate 16 is fixedly connected to the bottom of the first ladder 1 and the second ladder 2, respectively. Two locking slots are opened on the top of the docking plate 16.

[0029] Each of the card blocks 15 is adapted to the card slot, and each of the card blocks 15 has a first threaded hole on its surface.

[0030] The front and rear ends of the mating plate 16 are respectively provided with second threaded holes that are adapted to the first threaded hole. The second threaded holes at the front and rear ends of the mating plate 16 are respectively connected to the first threaded hole of the clamping block 15 by bolts.

[0031] A base plate 17 is fixedly connected to the bottom right side of the first ladder 1. A positioning hole is provided on the base plate 17, and a positioning bolt 18 is provided in the positioning hole.

[0032] Through the above technical solution, both the first ladder 1 and the second ladder 2 are composed of two side rods 11 and multiple steps 12. The steps 12 are welded to the inner side of the side rods 11. Support components are installed at the bottom of both the first ladder 1 and the second ladder 2. During installation, the two side rods 11 are first supported by the support components at the bottom left side of the two side rods 11. Then, the bottom plate 17 at the bottom right side of the first ladder 1 is fixed to the ground by the positioning bolts 18 to provide support and stability for the two side rods 11. Subsequently, the workers weld the steps 12 between the two side rods 11 in sequence. After welding is completed, The lower buckle 14 is welded to both ends of the second ladder body 2. Then, the two side plates of the second ladder body 2 are pulled to insert the buckle block 15 at the bottom of the lower buckle 14 into the buckle groove at the top of the connecting plate 16 of the first ladder body 1. Then, the lower buckle 14 and the buckle block 15 are fixed with bolts. Then, the upper buckle 13 is snapped onto the lower buckle 14. The upper buckle 13 is then welded to the side rod 11 of the first ladder body 1. Then, the steps 12 between the two side rods 11 of the second ladder body 2 are welded in sequence to realize the splicing and assembly between the two stainless steel stairs, so that installation can be carried out indoors without large hoisting equipment.

[0033] Example 2

[0034] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 Furthermore, based on Embodiment 1, the following is obtained: the support assembly includes a triangular base 19, the bottom of the triangular base 19 has two support screw holes, the interior of the two support screw holes is threaded with threaded posts 20, and the bottom of the threaded posts 20 is fixedly connected with support cylinders 21.

[0035] The support cylinder 21 is threadedly connected to the support column 22, and the bottom of the support column 22 is rotatably connected to the support seat 23.

[0036] The top of the triangular base 19 is fixedly connected to the mating plate 16.

[0037] Through the above technical solution, the threaded column 20 can be removed from the support screw hole by the two support screw holes set at the bottom of the triangular seat 19, which facilitates the installation and disassembly of the support cylinder 21 and makes it easier to provide support when hoisting is not easy. The height of the support component can be adjusted as needed by the support column 22.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular, assembled indoor stainless steel staircase, comprising a first ladder body (1) and a second ladder body (2) assembled together, characterized in that: The first ladder (1) and the second ladder (2) are both composed of two side rods (11) and multiple steps (12). The multiple steps (12) are welded to the inside of the two side rods (11). Support components are installed at the bottom of the first ladder (1) and the second ladder (2). The first ladder (1) and the second ladder (2) are respectively welded with upper buckles (13) at their left and right ends. The second ladder (2) is respectively welded with lower buckles (14) that are compatible with the upper buckles (13) at its left and right ends. The bottom of the lower buckles (14) is respectively fixedly connected with a locking block (15). The bottom of the first ladder (1) and the second ladder (2) is respectively fixedly connected with a docking plate (16). The top of the docking plate (16) has two locking slots.

2. The modular assembled indoor stainless steel staircase according to claim 1, characterized in that: The card blocks (15) are respectively adapted to the card slots, and the surface of the card blocks (15) is respectively provided with first threaded holes.

3. The modular assembled indoor stainless steel staircase according to claim 1, characterized in that: The front and rear ends of the docking plate (16) are respectively provided with second threaded holes that are adapted to the first threaded hole. The second threaded holes at the front and rear ends of the docking plate (16) are respectively connected to the first threaded hole of the clamping block (15) by bolts.

4. A modular assembled indoor stainless steel staircase according to claim 1, characterized in that: A base plate (17) is fixedly connected to the bottom right side of the first ladder (1). A positioning hole is provided on the base plate (17), and a positioning bolt (18) is provided in the positioning hole.

5. A modular assembled indoor stainless steel staircase according to claim 1, characterized in that: The support assembly includes a triangular seat (19), the bottom of which has two support screw holes, and the interior of the two support screw holes is threaded with threaded posts (20), and the bottom of the threaded posts (20) is fixedly connected with support cylinders (21).

6. A modular assembled indoor stainless steel staircase according to claim 5, characterized in that: The support cylinder (21) is threaded with support columns (22) inside, and the bottom of the support columns (22) is rotatably connected with support seats (23).

7. A modular assembled indoor stainless steel staircase according to claim 5, characterized in that: The top of the triangular base (19) is fixedly connected to the docking plate (16).