Fabricated pouring stair

Abstract

The utility model discloses an assembly type pouring stair which comprises a floor slab, a pouring cavity is formed in the floor slab, a pouring hole communicated with the pouring cavity is formed in the horizontal end of the top of the floor slab, a plurality of inserting holes communicated with the pouring cavity are formed in the floor slab, and a stair plate is arranged on the floor slab. A plurality of first reinforcing steel bars are fixedly connected to the bottom of the ladder plate, clamping grooves are formed in the bottom sides of the first reinforcing steel bars, and second reinforcing steel bars penetrating through the clamping grooves are fixedly connected into the pouring cavity. According to the assembled staircase, a traditional integrated assembled staircase is changed into a split structure of the floor slabs and the staircase plates, and the floor slabs adopt cavity structures, so that the dead weight of the staircase plates during hoisting is reduced, and the assembled staircase is convenient to transport, hoist and construct.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a prefabricated cast-in-place staircase. Background Technology

[0002] Prefabricated construction is a modern construction method that transfers a large amount of traditional on-site construction work to a factory environment. Specifically, it involves first precisely manufacturing the necessary building components and accessories in a factory, then transporting these prefabricated components to the construction site, where they are assembled using safe and reliable connection technologies to ultimately form a complete building.

[0003] Taking prefabricated stairs as an example, these components are prefabricated in a factory and then transported to the construction site for installation. This method not only improves construction efficiency but also ensures the consistency and precision of product quality. To ensure that prefabricated assembled stairs have sufficient structural strength, they are usually manufactured using solid concrete structures. However, this also makes the prefabricated stairs themselves quite heavy, thereby increasing the complexity and difficulty of transportation, hoisting, and installation, and placing higher demands on assembly operations. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated cast-in-place staircase in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A prefabricated cast-in-place staircase includes a floor slab with a casting cavity inside. A casting hole communicating with the casting cavity is opened on the top horizontal end of the floor slab. Several insertion holes communicating with the casting cavity are opened on the floor slab. A stair slab is provided on the floor slab. Several first reinforcing bars are fixedly connected to the bottom of the stair slab. A slot is opened on the bottom side of the first reinforcing bars. A second reinforcing bar passing through the slot is fixedly connected inside the casting cavity.

[0007] As a further description of the above technical solution:

[0008] The floor slab is provided with stair beams on both sides and connected to their horizontal ends. Bolts are fixedly connected to the middle of the stair beams. Mounting holes for bolts to pass through are opened on the horizontal ends of both sides of the floor slab. Nuts are connected to the bolts by thread.

[0009] As a further description of the above technical solution:

[0010] The stair beam is fixedly connected with limiting blocks arranged on both sides of the bolt, and the horizontal end of the floor slab is provided with a limiting groove that cooperates with the limiting blocks.

[0011] As a further description of the above technical solution:

[0012] A mortar leveling layer is provided between the stair beam and the floor slab.

[0013] As a further description of the above technical solution:

[0014] Several anti-slip strips are fixedly connected to the step surface of the ladder.

[0015] As a further description of the above technical solution:

[0016] Side baffles are fixedly connected to both sides of the floor slab, and several handrail holes are provided on the side baffles.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, the traditional integrated prefabricated staircase is transformed into a separate structure of floor slabs and stair treads, and the floor slab adopts a hollow structure, thereby reducing the self-weight of the stair treads during hoisting and facilitating the transportation, hoisting and assembly of the prefabricated staircase.

[0019] 2. In this utility model, the stair slab is connected to the floor slab, so that the first steel bar is inserted into the splice hole, which plays a positioning role in the installation of the stair slab and the floor slab. Then, concrete is poured into the pouring cavity through the pouring hole. The concrete fills the cavity to form a solid structure, while strengthening the connection between the first steel bar and the second steel bar, ensuring the structural strength of the staircase.

[0020] 3. In this utility model, mortar leveling is performed inside the stair beam, and the floor slab is suspended inside two sets of stair beams. At this time, the limiting block is inserted into the limiting groove, and the bolt can be inserted into the installation hole. Then, concrete is poured into the installation hole, exposing a certain amount of the bolt. After the concrete solidifies, nuts are installed on the bolt to complete the reinforcement work. The limiting block and the limiting groove work together to improve the stability of the connection between the floor slab and the stair beam, and play a limiting role to prevent displacement during the assembly of the floor slab 1. Moreover, a set of bolts can be used to complete the fixation, which improves the convenience of installation. Attached Figure Description

[0021] Figure 1 A three-dimensional structural schematic diagram of a prefabricated cast-in-place staircase according to an embodiment of the present utility model is shown;

[0022] Figure 2 An exploded view of a prefabricated cast-in-place staircase according to an embodiment of the present invention is shown.

[0023] Figure 3 A cross-sectional schematic diagram of a prefabricated cast-in-place staircase according to an embodiment of the present invention is shown.

[0024] Legend:

[0025] 1. Floor slab; 101. Pouring hole; 102. Installation hole; 103. Limiting groove; 104. Insertion hole; 105. Pouring cavity; 2. Side baffle; 201. Handrail hole; 3. Stair tread; 4. Anti-slip strip; 5. Stair beam; 6. Mortar leveling layer; 7. Limiting block; 8. Bolt; 9. Nut; 10. First reinforcing bar; 1001. Slot; 11. Second reinforcing bar. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-3 This utility model provides a technical solution: a prefabricated cast-in-place staircase, including a floor slab 1, a casting cavity 105 inside the floor slab 1, a casting hole 101 communicating with the casting cavity 105 on the top horizontal end of the floor slab 1, a plurality of insertion holes 104 communicating with the casting cavity 105 on the floor slab 1, a stair slab 3 on the floor slab 1, a plurality of first reinforcing bars 10 fixedly connected to the bottom of the stair slab 3, a slot 1001 opened on the bottom side of the first reinforcing bars 10, and a second reinforcing bar 11 passing through the slot 1001 fixedly connected inside the casting cavity 105. First, the traditional integrated prefabricated staircase is transformed into a separate structure of floor slab 1 and stair slab 2, with floor slab 1 adopting a hollow structure. This reduces the self-weight of the stair slab during hoisting, facilitating the transportation, hoisting, and assembly of the prefabricated staircase. Second, after floor slab 1 and stair beam 5 are connected, stair slab 2 is then connected to floor slab 1, allowing the first reinforcing bar 10 to be inserted into the insertion hole 104, which serves to position the stair slab 1 and floor slab 1 during installation. Subsequently, concrete is poured into the pouring cavity 105 through the pouring hole 101. The concrete fills the cavity to form a solid structure, while simultaneously reinforcing the connection between the first reinforcing bar 10 and the second reinforcing bar 11, ensuring the structural strength of the staircase.

[0028] Specifically, such as Figure 1-3As shown, stair beams 5 are provided on both sides of the floor slab 1 and connected to their horizontal ends. Bolts 8 are fixedly connected to the middle of the stair beams 5. Mounting holes 102 are provided on both sides of the floor slab 1 to accommodate the bolts 8. Nuts 9 are connected to the bolts 8 by thread. Limiting blocks 7 are fixedly connected on both sides of the bolts 8. Limiting grooves 103 that cooperate with the limiting blocks 7 are provided on the horizontal ends of the floor slab 1. A mortar leveling layer 6 is provided between the stair beams 5 and the floor slab 1. Mortar leveling is performed inside the stair beam 5. The floor slab 1 is then suspended inside the two sets of stair beams 5. At this time, the limiting block 7 is inserted into the limiting groove 103, and the bolt 8 can be inserted into the mounting hole 102. Concrete is then poured into the mounting hole 102, exposing a certain amount of the bolt 8. After the concrete has solidified, nuts 9 are installed on the bolt 8 to complete the reinforcement. The limiting block 7 and the limiting groove 103 work together to improve the stability of the connection between the floor slab 1 and the stair beam 5, and play a limiting role to prevent displacement during the assembly of the floor slab 1. Moreover, a set of bolts is sufficient to complete the fixation, improving the ease of installation.

[0029] Specifically, such as Figure 1 As shown, several anti-slip strips 4 are fixedly connected to the step surface of the ladder board 3 to prevent slipping.

[0030] Specifically, such as Figure 1 and Figure 2 As shown, side baffles 2 are fixedly connected to both sides of the floor slab 1. The assembly of the side baffles 2, the stair slab 2 and the floor slab 1 serves to limit the movement. Several handrail holes 201 are provided on the side baffles 2, through which the stair handrails are installed.

[0031] Working principle: In use, firstly, mortar leveling is carried out in the stair beam 5, and the floor slab 1 is suspended in the two sets of stair beams 5. At this time, the limiting block 7 is inserted into the limiting groove 103, and the bolt 8 can be inserted into the mounting hole 102. Then, concrete is poured into the mounting hole 102, exposing a certain amount of the bolt 8. After the concrete solidifies, the nut 9 is installed on the bolt 8 to complete the reinforcement. The limiting block 7 and the limiting groove 103 work together to improve the stability of the connection between the floor slab 1 and the stair beam 5, and play a limiting role to prevent displacement during the assembly of the floor slab 1. Moreover, the fixing can be completed with a set of bolts, which improves the convenience of installation.

[0032] Secondly, the stair slab 2 is connected to the floor slab 1, so that the first steel bar 10 is inserted into the insertion hole 104, which plays a positioning role in the installation of the stair slab 1 and the floor slab 1. Then, concrete is poured into the pouring cavity 105 through the pouring hole 101. The concrete fills the cavity to form a solid structure, while strengthening the connection between the first steel bar 10 and the second steel bar 11, ensuring the structural strength of the staircase.

[0033] Finally, the stair handrail is installed through handrail hole 201.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A prefabricated cast-in-place staircase, comprising a floor slab (1), characterized in that, The floor slab (1) is provided with a casting cavity (105), and a casting hole (101) communicating with the casting cavity (105) is provided on the top horizontal end of the floor slab (1). Several insertion holes (104) communicating with the casting cavity (105) are provided on the floor slab (1). A ladder slab (3) is provided on the floor slab (1). Several first reinforcing bars (10) are fixedly connected to the bottom of the ladder slab (3). A slot (1001) is provided on the bottom side of the first reinforcing bars (10). A second reinforcing bar (11) passing through the slot (1001) is fixedly connected in the casting cavity (105).

2. The prefabricated cast-in-place staircase according to claim 1, characterized in that, The floor slab (1) is provided with stair beams (5) connected to its horizontal ends on both sides. The stair beams (5) are fixedly connected with bolts (8) in the middle. The floor slab (1) is provided with mounting holes (102) on both sides of its horizontal ends to accommodate the bolts (8) passing through. Nuts (9) are screwed onto the bolts (8) by threads.

3. The prefabricated cast-in-place staircase according to claim 2, characterized in that, The stair beam (5) is fixedly connected with limiting blocks (7) arranged on both sides of the bolt (8), and the floor slab (1) has a limiting groove (103) that cooperates with the limiting blocks (7) on the horizontal end.

4. A prefabricated cast-in-place staircase according to claim 3, characterized in that, A mortar leveling layer (6) is provided between the stair beam (5) and the floor slab (1).

5. A prefabricated cast-in-place staircase according to claim 4, characterized in that, Several anti-slip strips (4) are fixedly connected to the step surface of the ladder plate (3).

6. A prefabricated cast-in-place staircase according to claim 5, characterized in that, The floor slab (1) is fixedly connected to side baffles (2) on both sides, and the side baffles (2) are provided with several handrail holes (201).

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