Fabricated structure cast-in-situ stair steel formwork

Abstract

The application relates to the field of stair steel formworks, and discloses an assembled structure cast-in-place stair steel formwork. In the application, the assembled structure cast-in-place stair steel formwork comprises a steel formwork body, the lower end of the steel formwork body is provided with a reinforcing plate, the upper end of the reinforcing plate is fixedly connected with a plurality of connecting plates including a first connecting plate and a second connecting plate, the side surface of the steel formwork body is provided with a plurality of threaded holes including a first threaded hole and a second threaded hole, after workers joint the adjacent steel formwork bodies together, the second bolt is inserted into the second connecting plate, then the first bolt is inserted into the first connecting plate, and then the first threaded hole arranged on the side surface of the adjacent steel formwork body is connected, so that the reinforcing plate is fixed, the subsequent auxiliary reinforcing operation of the adjacent steel formwork bodies is facilitated, and the connection between structures is stable.

Description

Technical Field

[0001] This application belongs to the technical field of staircase steel formwork, specifically prefabricated cast-in-place staircase steel formwork. Background Technology

[0002] Prefabricated steel formwork for cast-in-place stairs boasts strong corrosion resistance. By applying anti-corrosion paint, oxidation and rust are effectively prevented, extending the formwork's lifespan and reducing maintenance and replacement frequency. Secondly, steel formwork provides a smoother surface during construction, reducing friction between the concrete and the formwork, thus improving the quality of the staircase's formation and resulting in a more aesthetically pleasing and smooth surface. Furthermore, prefabricated steel formwork for stairs allows for rapid assembly and disassembly, significantly improving construction efficiency and reducing labor costs and construction time.

[0003] For example, CN203361642U discloses a prefabricated cast-in-place steel formwork for stairs, including two parallel steel beams on the left and right sides. Anchor bolts are installed at both ends of the steel beams. Vertically downward-extending angle steel rods are connected to the steel beams at intervals according to the width of the stair steps. The bottom of the angle steel rods is welded to a reinforcing plate, and the back of the reinforcing plate is welded to the step panel. This utility model uses a pre-fabricated welding process, first welding the angle steel rods and steel beams into an integral frame, and then welding the step panel, reinforcing plate, and angle steel rods into an integral stair section formwork. The processing method is simple, the structure is stable, and it can be reused multiple times, thus greatly reducing construction costs. This utility model is easy to operate, reducing workload while ensuring construction progress, and also solves the technical problem of difficult removal of stair formwork due to deformation of wooden formwork.

[0004] However, it is common to provide reinforcement and support components for the structure to facilitate installation and disassembly, thereby facilitating subsequent disassembly operations, increasing the efficiency of equipment structure installation and disassembly, and making it easier for workers to operate and use. Utility Model Content

[0005] The purpose of this application is to provide prefabricated cast-in-place steel formwork for staircases in order to solve the problem of providing reinforced support components for structures that are easy to install and disassemble.

[0006] The technical solution adopted in this application is as follows: a prefabricated cast-in-place staircase steel formwork, including a steel formwork body, a reinforcing plate at the lower end of the steel formwork body, and multiple connecting plates, including a first connecting plate and a second connecting plate, fixedly connected to the upper end of the reinforcing plate. Multiple threaded holes, including a first threaded hole and a second threaded hole, are provided on the side of the steel formwork body. A second bolt is threadedly connected to the side of the second connecting plate, and the other end of the second bolt passes through the second connecting plate and is inserted into the second threaded hole on the side of the steel formwork body. A first bolt is threadedly connected to the side of the first connecting plate, and the other end of the first bolt passes through the first connecting plate and is inserted into the first threaded hole on the side of the steel formwork body.

[0007] By adopting the above technical solution, in the operation and use of steel formwork, the use of reinforcing plates and the first and second connecting plates set at the upper end of the reinforcing plates facilitates the reinforcement of the position between adjacent steel formwork bodies, thereby ensuring the fixed position of adjacent steel formwork bodies after structural assembly and installation, which facilitates the subsequent pouring of stairs and ensures the normal progress of the project. In use, after the workers snap the adjacent steel formwork bodies together, they insert the second bolt into the second connecting plate and then connect it to the second threaded hole set on the side of the steel formwork body. They then insert the first bolt into the first connecting plate and then connect it to the inside of the first threaded hole set on the side of the adjacent steel formwork body, thereby fixing the reinforcing plate and facilitating subsequent auxiliary reinforcement of adjacent steel formwork bodies, ensuring the stable connection between the structures.

[0008] In a preferred embodiment, a working wall is provided on the side of the main body of the steel formwork.

[0009] By adopting the above technical solution, the working wall structure is connected to the working wall through the steel formwork body, which facilitates the normal pouring operation of the staircase.

[0010] In a preferred embodiment, a plurality of guardrail support columns are provided at the upper end of the main body of the steel formwork, and guardrail bars are fixedly connected to the upper end of the guardrail support columns.

[0011] By adopting the above technical solution, the guardrail support column can easily support the position of the guardrail and form a complete structural body, thereby facilitating subsequent operation and ensuring the integrity of the staircase structure.

[0012] In a preferred embodiment, a plurality of rectangular plates are fixedly connected to the side of the guardrail support post, and the rectangular plates are threaded with fixing screws. The other end of the fixing screw passes through the rectangular plate and is inserted into a third threaded hole provided on the surface of the steel template body.

[0013] By adopting the above technical solution, the rectangular plate is used to facilitate the mounting of fixing screws, thereby fixing the position of the guardrail support column on the upper part of the steel formwork body, which facilitates the subsequent fixing of the guardrail support column and guardrail.

[0014] In a preferred embodiment, a rectangular snap-fit ​​plate is fixedly connected to the side of the steel formwork body, and a slot is provided on the side of the steel formwork body opposite to the rectangular snap-fit ​​plate, the size of the slot and the rectangular snap-fit ​​plate being compatible.

[0015] By adopting the above technical solution, the rectangular snap-fit ​​plate is snapped into the slot, which facilitates the interlocking operation between adjacent steel formwork bodies, thereby making it easier for workers to assemble the structure, reducing the difficulty of connecting the structures, and making it easier for workers to operate.

[0016] In a preferred embodiment, the rectangular snap-fit ​​plate is snapped into the slot, and the rectangular snap-fit ​​plate is fixedly connected to the slot by snap-fit ​​bolts.

[0017] By adopting the above technical solution, the rectangular clamping plate can be easily fixed in the groove by the set clamping bolts, thereby ensuring the connection between the structures and facilitating the subsequent assembly of the stair steel formwork and the normal progress of subsequent pouring operations.

[0018] In a preferred embodiment, both the main body and surface of the steel template are coated with anti-corrosion paint.

[0019] By adopting the above technical solutions, anti-corrosion paint can effectively isolate moisture and oxygen in the air, reduce the risk of oxidation and rust on the surface of steel formwork, extend the service life of the formwork, and enhance the durability of steel formwork, especially when construction is carried out in humid or harsh environments, it can better cope with the erosion of the external environment and avoid material degradation.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0021] In this application, during the use of steel formwork, the use of a reinforcing plate and a first connecting plate and a second connecting plate at the upper end of the reinforcing plate facilitates the reinforcement of the position between adjacent steel formwork bodies. This ensures that the adjacent steel formwork bodies are fixed in position after structural assembly and installation, facilitating subsequent staircase pouring operations and ensuring the normal progress of the project. In use, after the workers snap the adjacent steel formwork bodies together, they insert the second bolt into the second connecting plate and then connect it to the second threaded hole on the side of the steel formwork body. They also insert the first bolt into the first connecting plate and then connect it to the first threaded hole on the side of the adjacent steel formwork body, thereby fixing the reinforcing plate and facilitating subsequent auxiliary reinforcement of adjacent steel formwork bodies, ensuring a stable connection between the structures. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the prefabricated cast-in-place staircase steel formwork structure of this application;

[0023] Figure 2 This is a schematic diagram of the lower structure of the staircase steel formwork in this application;

[0024] Figure 3 This is a detailed drawing of the steel formwork structure connection in this application;

[0025] Figure 4 This is a detailed diagram of the connection of the reinforcing plate structure in this application.

[0026] Markings in the diagram: 1. Steel formwork body; 2. First threaded hole; 3. Guardrail support column; 4. Guardrail post; 5. Fixing screw; 6. Rectangular plate; 7. Second threaded hole; 8. Working wall; 9. Reinforcing plate; 10. First connecting plate; 11. First bolt; 12. Second bolt; 13. Second connecting plate; 14. Clip bolt; 15. Rectangular clip plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Example:

[0029] Reference Figure 1-4The prefabricated cast-in-place staircase steel formwork includes a steel formwork body 1. A reinforcing plate 9 is provided at the lower end of the steel formwork body 1. Multiple connecting plates, including a first connecting plate 10 and a second connecting plate 13, are fixedly connected to the upper end of the reinforcing plate 9. Multiple threaded holes, including a first threaded hole 2 and a second threaded hole 7, are provided on the side of the steel formwork body 1. A second bolt 12 is threadedly connected to the side of the second connecting plate 13, with the other end of the second bolt 12 passing through the second connecting plate 13 and inserted into the second threaded hole 7 on the side of the steel formwork body 1. A first bolt 11 is threadedly connected to the side of the first connecting plate 10, with the other end of the first bolt 11 passing through the first connecting plate 10 and inserted into the first threaded hole 2 on the side of the steel formwork body 1. During the operation of the steel formwork, the reinforcing plate 9 and the reinforcing plate 9 at its upper end are used to reinforce the formwork. The first connecting plate 10 and the second connecting plate 13 facilitate the reinforcement of the position between adjacent steel formwork bodies 1, thereby ensuring the position of adjacent steel formwork bodies 1 is fixed after structural assembly and installation, which facilitates the subsequent pouring of stairs and ensures the normal progress of the project. In use, after the workers snap the adjacent steel formwork bodies 1 together, they insert the second bolt 12 into the second connecting plate 13, and then connect it into the second threaded hole 7 on the side of the steel formwork body 1. They then insert the first bolt 11 into the first connecting plate 10, and then connect it into the first threaded hole 2 on the side of the adjacent steel formwork body 1, thereby fixing the reinforcement plate 9. This facilitates the subsequent auxiliary reinforcement of adjacent steel formwork bodies 1 and ensures the stable connection between the structures.

[0030] Reference Figure 1-2 The steel formwork body 1 has a working wall 8 on its side. The working wall 8 is structurally connected to the steel formwork body 1, which facilitates the normal pouring of the stairs.

[0031] Reference Figure 1-2 The upper end of the steel formwork body 1 is provided with multiple guardrail support columns 3. The upper end of the guardrail support column 3 is fixedly connected to the guardrail 4. The guardrail support column 3 can support the position of the guardrail 4 to form a complete structural body, which facilitates subsequent operation and ensures the integrity of the staircase structure.

[0032] Reference Figure 1-2 Multiple rectangular plates 6 are fixedly connected to the side of the guardrail support post 3. The rectangular plates 6 are threaded with fixing screws 5. The other end of the fixing screws 5 passes through the rectangular plates 6 and is inserted into the third threaded hole set on the surface of the steel formwork body 1. By using the rectangular plates 6, it is easy to use the working position of mounting the fixing screws 5, so as to fix the position of the guardrail support post 3 at the upper end of the steel formwork body 1, thereby facilitating the subsequent fixing of the guardrail support post 3 and the guardrail 4.

[0033] Reference Figure 1-3A rectangular snap-fit ​​plate 15 is fixedly connected to the side of the steel formwork body 1. A slot is provided on the side of the steel formwork body 1 opposite to the rectangular snap-fit ​​plate 15. The size of the slot and the rectangular snap-fit ​​plate 15 are matched. The rectangular snap-fit ​​plate 15 is snapped into the slot, which facilitates the interlocking operation between adjacent steel formwork bodies 1. This makes it convenient for workers to assemble the structure, reduces the difficulty of connecting the structures, and makes it easier for workers to operate.

[0034] Reference Figure 1-3 The rectangular snap-fit ​​plate 15 is snapped into the slot, and the rectangular snap-fit ​​plate 15 is fixedly connected to the slot by snap-fit ​​bolts 14. The snap-fit ​​bolts 14 are used to fix the rectangular snap-fit ​​plate 15 in the slot, thereby ensuring the connection between the structures and facilitating the subsequent assembly of the stair steel formwork and the normal progress of subsequent pouring operations.

[0035] Reference Figure 1-3 The main body and surface of the steel formwork are coated with anti-corrosion paint. The anti-corrosion paint can effectively isolate moisture and oxygen in the air, reduce the risk of oxidation and rust on the surface of the steel formwork, and extend the service life of the formwork. The anti-corrosion coating enhances the durability of the steel formwork, especially when construction is carried out in humid or harsh environments, and can better cope with the erosion of the external environment and avoid material degradation.

[0036] The implementation principle of the prefabricated cast-in-place staircase steel formwork embodiment of this application is as follows:

[0037] In the operation of steel formwork, the use of reinforcing plate 9 and the first connecting plate 10 and the second connecting plate 13 set on the upper end of reinforcing plate 9 facilitates the reinforcement of the position between adjacent steel formwork bodies 1, thereby ensuring the fixed position of adjacent steel formwork bodies 1 after structural assembly and installation, which facilitates the subsequent pouring of stairs and ensures the normal progress of the project. In use, after the workers snap the adjacent steel formwork bodies 1 together, they insert the second bolt 12 into the second connecting plate 13, and then connect it into the second threaded hole 7 set on the side of the steel formwork body 1. They then insert the first bolt 11 into the first connecting plate 10, and then connect it into the first threaded hole 2 set on the side of the adjacent steel formwork body 1, thereby fixing the reinforcing plate 9. This facilitates the subsequent auxiliary reinforcement of adjacent steel formwork bodies 1 and ensures the stable connection between the structures. By using this mechanism, the position connection of the steel formwork body 1 is reinforced during normal assembly operations, thereby ensuring the stability of the working position of the steel formwork body 1 and facilitating the subsequent pouring of stairs.

[0038] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A prefabricated cast-in-place staircase steel formwork, comprising a steel formwork body (1), characterized in that: The lower end of the steel formwork body (1) is provided with a reinforcing plate (9). The upper end of the reinforcing plate (9) is fixedly connected with multiple connecting plates, including a first connecting plate (10) and a second connecting plate (13). The side of the steel formwork body (1) is provided with multiple threaded holes, including a first threaded hole (2) and a second threaded hole (7). The side of the second connecting plate (13) is threaded with a second bolt (12). The other end of the second bolt (12) passes through the second connecting plate (13) and is inserted into the second threaded hole (7) provided on the side of the steel formwork body (1). The side of the first connecting plate (10) is threaded with a first bolt (11). The other end of the first bolt (11) passes through the first connecting plate (10) and is inserted into the first threaded hole (2) provided on the side of the steel formwork body (1).

2. The prefabricated cast-in-place staircase steel formwork as described in claim 1, characterized in that: The steel formwork body (1) has a working wall (8) on its side.

3. The prefabricated cast-in-place staircase steel formwork as described in claim 1, characterized in that: The upper end of the steel formwork body (1) is provided with multiple guardrail support columns (3), and the upper end of the guardrail support column (3) is fixedly connected with a guardrail rod (4).

4. The prefabricated cast-in-place staircase steel formwork as described in claim 3, characterized in that: The side of the guardrail support column (3) is fixedly connected with multiple rectangular plates (6), and the rectangular plates (6) are threadedly connected with fixing screws (5). The other end of the fixing screws (5) passes through the rectangular plates (6) and is inserted into the third threaded hole provided on the surface of the steel template body (1).

5. The prefabricated cast-in-place staircase steel formwork as described in claim 1, characterized in that: A rectangular snap-fit ​​plate (15) is fixedly connected to the side of the steel template body (1). A slot is provided on the side of the steel template body (1) opposite to the rectangular snap-fit ​​plate (15). The size of the slot and the rectangular snap-fit ​​plate (15) are compatible.

6. The prefabricated cast-in-place staircase steel formwork as described in claim 5, characterized in that: The rectangular snap-fit ​​plate (15) is snapped into the slot, and the rectangular snap-fit ​​plate (15) is fixedly connected to the slot by snap-fit ​​bolts (14).

7. The prefabricated cast-in-place staircase steel formwork as described in claim 1, characterized in that: The main body (1) and surface of the steel template are coated with anti-corrosion paint.

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