Fabricated stair construction stairwell operation platform

Abstract

The application relates to the technical field of building construction, and discloses a fabricated stair construction stairwell operation platform, which comprises a lower horizontal platform and a restable upper frame structure connected through welding. The lower platform is provided with a passageway with a flip cover and a lifting ring, the frame is composed of a rod piece connected through a bolt and a protective net, a steel stair connecting platform plate is arranged in the frame, and a tower crane is used for hoisting to realize a vertical transportation passageway between floors. The application is hoisted by the tower crane to realize integral installation, replaces manual carrying, improves installation efficiency, the frame structure can be disassembled and used for multiple floors, cost is saved, the flip cover forms a temporary edge enclosure, the protective net enhances safety protection of high-altitude operation, and the personal safety of construction personnel is ensured.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a prefabricated staircase construction stairwell operation platform. Background Technology

[0002] With the widespread application of prefabricated building technology, prefabricated staircases, as an important component of prefabricated structures, are playing an increasingly crucial role in modern building construction. Prefabricated staircases offer advantages such as factory production, controllable quality, and rapid construction, making them a common choice in building projects. However, in actual construction, the installation of prefabricated staircases faces a series of technical challenges.

[0003] Under current construction techniques, the installation of prefabricated staircases can only begin after the main structure of the current floor has been poured. This limitation directly results in a lack of effective vertical transport channels between floors, making it difficult to efficiently transfer construction personnel and materials, severely impacting overall construction efficiency. Furthermore, the staircase openings reserved for installation remain open for extended periods during construction, posing significant safety hazards and threatening the lives of workers. In addition, the construction of operating platforms in traditional methods often relies on temporary facilities, which are not only cumbersome and time-consuming to set up, but also lack sufficient assurance of stability and safety.

[0004] To address the aforementioned issues, there is an urgent need for an operating platform device that can effectively solve the difficulties and safety risks associated with vertical transportation during the construction of prefabricated staircases, in order to meet the requirements of modern building construction for efficiency and safety. Summary of the Invention

[0005] This invention addresses the technical problems existing in the construction of prefabricated staircases, such as the lack of vertical transportation channels between floors, safety hazards in the reserved openings of the staircases, and the low efficiency and safety risks caused by the reliance on manual handling for the erection of the operating platform. It provides a stairwell operating platform for the construction of prefabricated staircases.

[0006] The present invention provides a prefabricated staircase construction stairwell operation platform, characterized in that it comprises a lower horizontal platform and an upper frame structure, wherein the upper frame structure rests on the lower horizontal platform.

[0007] Furthermore, the lower horizontal platform includes a load-bearing beam and a horizontal platform panel, the load-bearing beam and the horizontal platform panel are connected and fixed by welding; the horizontal platform panel is provided with a passageway corresponding to the lower staircase, the passageway is equipped with a flip-up cover plate, and the four corners of the horizontal platform panel are provided with lifting rings, the lifting rings are connected and fixed to the horizontal platform panel by welding.

[0008] The load-bearing beam consists of four rectangular steel beams arranged along the outer edge of the platform to form a closed rectangular frame structure. The horizontal platform panel is a flat rectangular steel plate that covers the load-bearing beams, and the two are firmly connected together by full welding.

[0009] Furthermore, a hinged connection mechanism is provided between one side of the flip-top and the inner wall of the passageway, and the upper side of the flip-top is in contact with the upper surface of the horizontal platform panel; when the flip-top is in the closed state, it forms a flat transition surface with the horizontal platform panel to ensure the safety of construction personnel; when the flip-top is in the open state, it can form a temporary passage to facilitate the passage of personnel and materials during the construction of the lower staircase.

[0010] Furthermore, the upper frame structure includes an outer frame, several protective nets, a first stair platform, a second stair platform, and a steel staircase. The protective nets are wrapped around the outer frame and fixed to the outer frame by mechanical connection. The first stair platform and the second stair platform are fixed to the outer frame by mechanical connection. The steel staircase is provided inside the outer frame and is firmly connected to the first stair platform and the second stair platform.

[0011] The outer frame consists of several vertical and horizontal bars, which are connected by bolts to form a detachable three-dimensional frame structure. The top of the outer frame is provided with four lifting rings, which are firmly connected to the outer frame.

[0012] Furthermore, the protective net is a mesh-like protective structure composed of diamond-shaped mesh openings, covering the outer facade of the frame to prevent construction workers from falling and to provide edge safety protection.

[0013] Furthermore, the first stair platform is located in the upper area of ​​the upper frame structure, serving as a resting platform at the top of the stairs; the second stair platform is located in the lower area of ​​the upper frame structure, serving as a transition platform at the bottom of the stairs, and its height matches that of the resting surface of the lower horizontal platform.

[0014] Furthermore, the steel staircase is located inside the outer frame and consists of multiple steps, connecting the first staircase platform and the second staircase platform, providing a vertical passageway to realize the vertical transportation of personnel and materials between floors.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The operating platform is hoisted and placed on the completed platform beam by means of lifting rings set at the four corners of the lower horizontal platform and four lifting rings at the top of the upper frame structure, using a tower crane hoisting method. This completely replaces manual handling, significantly reduces the labor intensity of construction, and greatly improves installation efficiency.

[0016] 2. The upper frame structure is bolted together to form a detachable three-dimensional frame structure, which is easy to disassemble and transport. It can be reused on multiple floors in high-rise prefabricated building projects, saving construction costs. The passageway is equipped with a flip-up cover to form an edge protection, which effectively prevents people from accidentally stepping on it and falling. The protective net is wrapped around the outside of the outer frame to further enhance the safety protection of high-altitude operations and ensure the personal safety of construction personnel.

[0017] 3. The lower horizontal platform is rigidly connected by welding, which has a strong load-bearing capacity. The upper frame structure is connected by bolts to form a stable three-dimensional frame, which is placed on the lower horizontal platform to form an overall stable working platform. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the lower horizontal platform in an embodiment of the present invention.

[0019] Fig. 2 This is a three-dimensional schematic diagram of the upper frame structure according to an embodiment of the present invention.

[0020] Figure label: 1. Lower horizontal platform; 11. Load-bearing beam; 12. Horizontal platform panel; 13. Passageway opening; 14. Flip-top plate; 15. Lifting ring; 2. Upper frame structure; 21. Outer frame; 211. Vertical bar; 212. Horizontal bar; 22. Protective net; 23. First stage platform plate; 24. Second stage platform plate; 25. Steel staircase; 26. Lifting ring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figs. 1-2 As shown, the prefabricated staircase construction stairwell operation platform of this invention mainly consists of two parts: a lower horizontal platform 1 and an upper frame structure 2. The upper frame structure 2 is placed on the lower horizontal platform 1 to form a complete inter-floor operation platform system.

[0023] First, the lower horizontal platform 1 will be described in detail. As the fundamental support unit of the entire operating platform, the lower horizontal platform 1 bears the crucial function of transferring all loads to the upper frame structure 2. The lower horizontal platform 1 consists of two main components: load-bearing beams 11 and a horizontal platform panel 12. The load-bearing beams 11 are made of four rectangular steel beams, arranged along the outer edge of the platform to form a closed rectangular frame structure. The four load-bearing beams 11 are firmly connected by welding, forming a stable rigid frame system. The horizontal platform panel 12 is a flat rectangular steel plate. The thickness is determined according to the actual load-bearing requirements of the project, typically using 8 to 12 mm thick Q235 grade steel. The horizontal platform panel 12 covers the load-bearing beams 11, and the two are firmly integrated by full welding, allowing the load-bearing beams 11 and the horizontal platform panel 12 to jointly bear the loads from the upper frame structure 2 as well as the dynamic loads during construction.

[0024] The horizontal platform panel 12 is provided with a passageway 13 corresponding to the lower staircase. The position and size of the passageway 13 are determined according to the staircase design drawings, and its planar projection shape matches the position of the stairwell of the lower staircase, ensuring that construction personnel can hoist and position the lower staircase components from the passageway 13 during later staircase installation. A flip-top plate 14 is provided at the passageway 13. The flip-top plate 14 is a cover plate mechanism that can be rotated and opened and closed on one side. A hinge connection mechanism is provided between one side of the flip-top plate 14 and the inner wall of the passageway 13. One side of the hinge is welded and fixed to the side of the flip-top plate 14, and the other side of the hinge is welded and fixed to the inner wall of the passageway 13, so that the flip-top plate 14 can rotate and open and close within a range of 90 degrees around the hinge axis. The upper side of the flip-top 14 is attached to the upper surface of the horizontal platform panel 12. When the flip-top 14 is in the closed state, its upper surface forms a smooth transition surface with the upper surface of the horizontal platform panel 12, avoiding the risk of tripping for construction workers due to height differences and effectively ensuring the safety of construction workers when working on the upper level. When the flip-top 14 is in the open state, it can form a temporary passage, facilitating the passage of personnel and small materials during the construction of the lower staircase through the passage opening 13. After the installation of the lower staircase is completed, the flip-top 14 is flipped back to its original position, forming a safe and flat working surface again.

[0025] Lifting rings 15 are provided at the four corners of the horizontal platform panel 12. Each lifting ring 15 is made of round steel, with one end bent into a ring-shaped lifting lug, and the other end welded to the corner of the horizontal platform panel 12. The four lifting rings 15 are symmetrically arranged at the four corners of the horizontal platform panel 12, and their positions are precisely calculated to ensure that the center of gravity of the platform is located at the center of the four lifting points during lifting, preventing tilting during the lifting process. The design load-bearing capacity of the lifting rings 15 is determined based on the self-weight of the lower horizontal platform 1 and the construction load, typically selecting a specification with a load-bearing capacity of not less than 3 tons to meet the safety requirements of tower crane lifting operations.

[0026] The upper frame structure 2 will now be described in detail. The upper frame structure 2 comprises five main components: an outer frame 21, several protective nets 22, a first-stage platform 23, a second-stage platform 24, and a steel staircase 25. The outer frame 21 consists of several vertical bars 211 and several horizontal bars 212, forming a three-dimensional frame structure. The vertical bars 211 are vertically arranged steel components, and the horizontal bars 212 are horizontally arranged steel components. The vertical bars 211 and horizontal bars 212 are fixed together by bolts, forming a stable grid frame. Specifically, connecting flanges are provided at the ends of both the vertical bars 211 and horizontal bars 212. Bolt holes are pre-machined on the flanges. When adjacent members need to be connected, the corresponding bolt holes are aligned, high-strength bolts are inserted, and nuts are tightened to form a reliable mechanical connection between the members. This bolted connection method allows the outer frame 21 to be quickly assembled and disassembled according to the actual needs of the construction site, facilitating the transportation and reuse of the operating platform. The top of the outer frame 21 is equipped with four lifting rings 26. The lifting rings 26 are also made of round steel and are firmly welded to the outer frame 21 for lifting and transporting the upper frame structure 2.

[0027] The protective netting 22 is wrapped around the outer facade of the outer frame 21 to prevent construction workers from falling from heights. The protective netting 22 is a diamond-shaped metal safety net, typically with mesh sizes of 50 mm × 50 mm and wire diameters of no less than 3 mm. The protective netting 22 is connected to the outer frame 21 by binding, specifically using steel wire ropes or special clamps to securely bind the perimeter of the protective netting 22 to each member of the outer frame 21, ensuring the protective netting 22 fits tightly against the outer surface of the frame, forming a complete edge protection system. The height of the protective netting 22 covers the entire facade height of the outer frame 21, extending from the position of the first platform slab 23 to below the second platform slab 24, ensuring that construction workers will not be at risk of falling when working at any position on the platform.

[0028] The first staircase platform 23 is located in the upper area of ​​the upper frame structure 2, serving as a resting platform at the top of the stairs for construction workers to stand and work on. The first staircase platform 23 is a rectangular steel plate, its dimensions determined by the clear dimensions of the stairwell, typically matching the internal clear dimensions of the outer frame 21. The first staircase platform 23 is fixed to the outer frame 21 by bolts. Specifically, connecting plates with bolt holes are provided around the perimeter of the first staircase platform 23. Bolts are used to fix the connecting plates to the vertical bars 211 and horizontal bars 212 of the outer frame 21, forming a stable whole between the first staircase platform 23 and the outer frame 21.

[0029] The second stair platform 24 is located in the lower area of ​​the upper frame structure 2, serving as a transition platform at the bottom of the staircase. Its height matches the support surface height of the lower horizontal platform 1, ensuring a smooth transition when the upper frame structure 2 rests on the lower horizontal platform 1. The second stair platform 24 is also a rectangular steel plate, with the same structural form and connection method as the first stair platform 23, and is fixed to the outer frame 21 by bolts.

[0030] The steel staircase 25 is installed inside the outer frame 21 and consists of multiple steps and two diagonal stair beams. The stair beams are made of channel steel, and the steps are made of steel plates. The stair beams and steps are connected by welding to form a robust steel staircase structure. The number of steps in the steel staircase 25 is determined according to the floor height, typically with 8 to 12 steps per flight. The step height is controlled within the range of 150 to 180 mm, and the step depth is controlled within the range of 250 to 300 mm to ensure comfortable and safe passage for construction personnel. The top of the steel staircase 25 is firmly connected to the first flight platform 23, and the bottom is firmly connected to the second flight platform 24. The connection method is to weld or bolt the ends of the stair beams of the steel staircase 25 to the platform 24, forming a stable integral structure with the two platform 25. The steel staircase 25 provides construction personnel with a vertical passage from the second flight platform 24 to the first flight platform 23, realizing the vertical transportation of personnel and materials between floors.

[0031] The specific operation process of the prefabricated staircase construction stairwell operation platform of this invention is as follows. First, the components of the lower horizontal platform 1 are assembled and welded in the factory or processing site. The load-bearing beam 11 is welded firmly to the horizontal platform panel 12, and the lifting rings 15 are welded and fixed to the four corners of the horizontal platform panel 12. At the same time, the flip-up plate 14 is installed at the passage opening 13 with hinges and adjusted to the closed state. During the assembly of the upper frame structure 2, the vertical rods 211 and horizontal rods 212 are assembled into the outer frame 21 by bolt connection according to the design drawings. Then, the protective net 22 is tied and fixed to the outside of the outer frame 21. Next, the first stair platform plate 23 and the second stair platform plate 24 are fixed to the outer frame 21 with bolts. Finally, the steel staircase 25 is installed inside the frame and firmly connected to the two platform plates, completing the entire assembly of the upper frame structure 2.

[0032] After assembly, the lower horizontal platform 1 and the upper frame structure 2 are hoisted separately using a tower crane. The hoisting process for the lower horizontal platform 1 is as follows: the tower crane's slings are attached to the four lifting rings 15, and the lower horizontal platform 1 is slowly lifted and transported to the preset installation position, i.e., the completed platform beam. After confirming the accurate position, it is slowly lowered so that the lower horizontal platform 1 is stably placed on the platform beam. The level of the platform is checked using a level instrument, and shims are used to adjust the level if necessary, ensuring that the lower horizontal platform 1 is in a level state. The hoisting process for the upper frame structure 2 is as follows: the tower crane's slings are attached to the four lifting rings 26, and the upper frame structure 2 is slowly lifted and transported to directly above the lower horizontal platform 1. After confirming alignment, it is slowly lowered so that the second platform section 24 is stably placed on the lower horizontal platform 1, completing the placement and installation of the upper frame structure 2. At this point, the entire operating platform is installed, and construction workers can use the steel staircase 25 to reach the working level where the first platform slab 23 is located from the ground or the lower floor to carry out the installation of the prefabricated staircase.

[0033] During the hoisting of the lower staircase components, the flip-top plate 14 can be flipped upwards to expose a passageway from the first staircase platform 23 to the lower staircase installation position. This passageway allows the staircase components to be lowered from above the operating platform for installation. Simultaneously, construction personnel can use this passageway to inspect and assist with lower-level work. After installation, the flip-top plate 14 is flipped back into its original position, restoring a safe and flat working surface.

[0034] The prefabricated staircase construction platform of this invention has significant reuse value in high-rise prefabricated building projects. After the staircase construction of one floor is completed, the upper frame structure 2 can be lifted from the lower horizontal platform 1 in reverse order and then transported to the next floor for reinstallation. During disassembly, the frame can be quickly disassembled simply by loosening the bolts connecting the various members. The disassembled members can be packaged and transported to the next construction floor for reassembly. This reusable method greatly saves construction costs, reduces steel consumption caused by repeatedly manufacturing the platform, and meets the requirements of green construction.

[0035] This invention utilizes tower cranes to hoist the operating platform onto the completed platform beams via lifting rings 15 at the four corners of the lower horizontal platform 1 and four lifting rings 26 at the top of the upper frame structure 2. This completely replaces the traditional manual handling method, significantly reducing labor intensity and greatly improving installation efficiency. The upper frame structure 2 is bolted together to form a detachable three-dimensional frame structure, facilitating disassembly, assembly, and transportation. In high-rise prefabricated building projects, it can be reused across multiple floors, saving construction costs. Flip-up covers 14 are installed at the passageway 13 to form edge protection, effectively preventing personnel from accidentally falling. A protective net 22 wraps around the outer frame 21, further enhancing safety protection for high-altitude operations and ensuring the personal safety of construction personnel. The lower horizontal platform 1 uses a welded rigid connection method, providing strong load-bearing capacity. The upper frame structure 2, bolted together to form a stable three-dimensional frame, rests on the lower horizontal platform 1 to form a stable overall working platform capable of withstanding large construction loads, meeting the operational requirements of prefabricated staircase construction.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can 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 prefabricated staircase construction stairwell operation platform, characterized in that, It includes a lower horizontal platform (1) and an upper frame structure (2), the upper frame structure (2) being placed on the lower horizontal platform (1).

2. The prefabricated staircase construction stairwell operating platform as described in claim 1, characterized in that, The lower horizontal platform (1) includes a load-bearing beam (11) and a horizontal platform panel (12), and the load-bearing beam (11) and the horizontal platform panel (12) are connected and fixed by welding.

3. The prefabricated staircase construction stairwell operating platform as described in claim 2, characterized in that, The load-bearing beam (11) consists of four rectangular steel beams arranged along the outer edge of the platform to form a closed rectangular frame structure.

4. The prefabricated staircase construction stairwell operating platform as described in claim 2 or 3, characterized in that, The horizontal platform panel (12) is a flat rectangular steel plate that covers the load-bearing beam (11), and the two are firmly connected together by full welding.

5. The prefabricated staircase construction stairwell operating platform as described in claim 2, characterized in that, The horizontal platform panel (12) is provided with a passageway (13) corresponding to the lower staircase, and a flip-up cover (14) is provided at the passageway (13).

6. The prefabricated staircase construction stairwell operating platform as described in claim 5, characterized in that, A hinge connection mechanism is provided between one side of the flip cover (14) and the inner wall of the channel opening (13).

7. The prefabricated staircase construction stairwell operating platform as described in claim 5 or 6, characterized in that, When the flip cover (14) is in the closed state, its upper surface forms a smooth transition surface with the upper surface of the horizontal platform panel (12).

8. The prefabricated staircase construction stairwell operating platform as described in claim 1, characterized in that, The upper frame structure (2) includes an outer frame (21), several protective nets (22), a first stair platform (23), a second stair platform (24), and a steel staircase (25). The protective nets (22) are wrapped around the outer frame (21) and fixed to the outer frame (21) by mechanical connection.

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