Prefabricated stair for house building construction

Abstract

The utility model discloses a prefabricated stair for house building construction, which comprises a plurality of step blocks, the plurality of step blocks are arranged upwards one by one in a step mode, a top step is arranged at the top of the topmost step block, and a bottom step is arranged at the bottom of the bottommost step block. The bottommost step block and the bottom step, every two adjacent step blocks and the topmost step block and the top step are fixedly connected through four bolt connecting assemblies, each bolt connecting assembly comprises a steel plate, and two bolts are welded to the top of each steel plate. According to the prefabricated stair, the prefabricated stair plate is disassembled into the step blocks, the top step and the bottom step, whole disassembly is achieved, the prefabricated stair is convenient to transport, the step blocks, the top step and the bottom step are installed and connected one by one from bottom to top through the bolt connecting assemblies, and rapid and convenient installation is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to a prefabricated staircase for building construction. Background Art

[0002] At present, prefabricated reinforced concrete stairs refer to stairs that are assembled and assembled using components produced in prefabrication plants or made on-site. The use of prefabricated assembled stairs can improve the level of industrialized construction, save formwork, simplify operating procedures, and significantly shorten the construction period compared to cast-in-place reinforced concrete stairs.

[0003] However, the existing prefabricated stairs in assembled buildings are usually cast as a whole. The prefabricated stair slabs cast as a whole are long, inconvenient to transport, and heavy, requiring large lifting equipment to lift and install them. Therefore, it is necessary to design a prefabricated staircase for building construction to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated staircase for building construction, which has the advantages of being easy to transport and install, so as to solve the above-mentioned background technical problems.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a prefabricated staircase for building construction, which includes multiple step blocks: the multiple step blocks are arranged upward one by one in a stepped manner, the top of the topmost step block is provided with a top step, and the bottom of the bottommost step block is provided with a bottom step, and the bottommost step block and the bottom step, between two adjacent step blocks, and between the topmost step block and the top step are all fixedly connected by four bolt connection assemblies.

[0006] Preferably, the bolt connection assembly comprises a steel plate, and two bolts are welded to the top of the steel plate.

[0007] Preferably, the rear side of the top of the step block and the rear side of the top of the bottom step are penetrated by a rear slot for use with a bolt, the front side of the top of the step block and the front side of the top of the top step are penetrated by a front slot for use with a bolt, the top of the bolt is threadedly connected with a nut, and the top of the inner cavity of the front slot is provided with a mounting groove for use with the nut.

[0008] Preferably, the inner cavity of the step block is provided with a steel frame assembly, and the bolt passes through the inner cavity of the steel frame assembly.

[0009] Preferably, the steel bar frame assembly includes a plurality of trapezoidal steel bar frames, which are connected by welding through connecting steel bars, a plurality of rectangular steel bar frames are welded to the surface of the connecting steel bars, and the rectangular steel bar frames and the trapezoidal steel bar frames are welded to each other.

[0010] The beneficial effects of the utility model are:

[0011] 1. The utility model disassembles the prefabricated stair slab into multiple step blocks, top steps and bottom steps, thereby facilitating the transportation of the prefabricated staircase. The step blocks, top steps and bottom steps are then installed and connected one by one from bottom to top using bolt connection assemblies, thereby achieving quick and convenient installation.

[0012] 2. The utility model provides a mounting groove, which makes it easier for the installer to thread the nut onto the top of the bolt;

[0013] 3. The utility model can improve the overall firmness of the step block through the setting of the steel frame assembly, thereby increasing the service life of the step block;

[0014] 4. The utility model provides a steel plate. After the prefabricated staircase is installed, the adjacent steel plates can be welded. At this time, the steel plates will form a whole steel plate to support the prefabricated staircase and improve the stability of the prefabricated staircase. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings. These drawings are only illustrative and do not limit the present invention, wherein:

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the utility model after installation;

[0017] Figure 2 This is a three-dimensional disassembled schematic diagram of an embodiment of the utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of a steel bar frame assembly according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of a three-dimensional disassembly of a steel frame assembly according to an embodiment of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Step block, 11. Steel bar frame assembly, 111. Trapezoidal steel bar frame, 112. Rectangular steel bar frame, 113. Connecting steel bars, 2. Top step, 3. Bottom step, 4. Bolt connection assembly, 41. Steel plate, 42. Bolt, 5. Rear slot, 6. Front slot, 7. Mounting slot, 8. Nut. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the prefabricated staircase for building construction according to the present invention will be described with reference to the accompanying drawings.

[0023] Figure 1-4A prefabricated staircase for building construction according to an embodiment of the present invention is shown, which includes a plurality of step blocks 1: the plurality of step blocks 1 are arranged upward one by one in a stepped manner, a top step 2 is provided on the top of the topmost step block 1, a bottom step 3 is provided on the bottom of the bottommost step block 1, and the bottommost step block 1 and the bottom step 3, between two adjacent step blocks 1, and between the topmost step block 1 and the top step 2 are fixedly connected by four bolt connection assemblies 4, the bolt connection assembly 4 includes a steel plate 41, through the arrangement of the steel plate 41, when the prefabricated staircase is installed, the adjacent steel plates 41 can be welded, at this time the steel plates 41 will form a whole piece of steel plate, support the prefabricated staircase, and improve the stability of the prefabricated staircase, two bolts 42 are welded on the top of the steel plate 41, and the rear side of the top of the step block 1 and the rear side of the top of the bottom step 3 are penetrated with a steel plate for use with the bolts 42 The rear slot 5, the front side of the top of the step block 1 and the front side of the top of the top step 2 are both penetrated by a front slot 6 for use with the bolt 42, the top of the bolt 42 is threadedly connected with a nut 8, and the top of the inner cavity of the front slot 6 is provided with a mounting slot 7 for use with the nut 8. The setting of the mounting slot 7 makes it convenient for the installer to thread the nut 8 onto the top of the bolt 42. The inner cavity of the step block 1 is provided with a steel bar frame assembly 11, and the bolt 42 passes through the inner cavity of the steel bar frame assembly 11. The setting of the steel bar frame assembly 11 can improve the overall firmness of the step block 1, thereby improving the service life of the step block 1. The steel bar frame assembly 11 includes a plurality of trapezoidal steel bar frames 111, and the plurality of trapezoidal steel bar frames 111 are welded together by connecting steel bars 113. The surface of the connecting steel bars 113 is welded with a plurality of rectangular steel bar frames 112, and the rectangular steel bar frames 112 and the trapezoidal steel bar frames 111 are welded together.

[0024] Working principle: When the present invention is used, the user inserts the bolt 42 into the inner cavity of the rear slot 5 in the bottom step 3. At this time, the top of the bolt 42 is inserted into the inner cavity of the front slot 6 in the bottom step block 1. Then, the nut 8 is placed in the inner cavity of the mounting slot 7 in the bottom step block 1 and the nut 8 is turned. The nut 8 is threadedly connected to the top of the bolt 42, thereby installing and connecting the bottom step 3 and the bottom step block 1. Then, the same operation is performed to install the step blocks 1 one by one, and then the top step 2 is installed above the top step block 1 to complete the prefabricated staircase. The prefabricated stairs are assembled and the inner cavities of the rear slot 5, the front slot 6 and the installation slot 7 are sealed and smoothed with concrete. Finally, the bottoms of the adjacent steel plates 41 can be welded to form a complete steel plate to support the prefabricated stairs and improve the overall stability of the prefabricated stairs. The prefabricated stair slab is disassembled into multiple step blocks 1, top steps 2 and bottom steps 3, which are disassembled into zero pieces to facilitate the transportation of the prefabricated stairs. The step blocks 1, top steps 2 and bottom steps 3 are installed and connected one by one from bottom to top through the bolt connection assembly 4 to achieve quick and convenient installation.

[0025] To sum up: the prefabricated staircase used in building construction is disassembled into multiple step blocks 1, top steps 2 and bottom steps 3 by disassembling the prefabricated staircase slabs, which is convenient for transportation of the prefabricated staircase. The step blocks 1, top steps 2 and bottom steps 3 are installed and connected one by one from bottom to top through the bolt connection assembly 4, so as to achieve quick and convenient installation.

Claims

1. A prefabricated staircase for building construction, characterized in that: The invention comprises a plurality of step blocks (1): the plurality of step blocks (1) are arranged upward one by one in a step-like manner, a top step (2) is provided at the top of the top step block (1), a bottom step (3) is provided at the bottom of the bottom step block (1), and the bottom step (1) and the bottom step (3), two adjacent step blocks (1), and the top step block (1) and the top step (2) are all fixedly connected by four bolt connection assemblies (4).

2. A prefabricated staircase for building construction according to claim 1, characterized in that: The bolt connection assembly (4) comprises a steel plate (41), and two bolts (42) are welded to the top of the steel plate (41).

3. The prefabricated staircase for building construction according to claim 2, characterized in that: The rear side of the top of the step block (1) and the rear side of the top of the bottom step (3) are both penetrated by a rear slot (5) for use with a bolt (42); the front side of the top of the step block (1) and the front side of the top of the top step (2) are both penetrated by a front slot (6) for use with a bolt (42); the top of the bolt (42) is threadedly connected to a nut (8); and the top of the inner cavity of the front slot (6) is provided with a mounting groove (7) for use with the nut (8).

4. The prefabricated staircase for building construction according to claim 3, characterized in that: The inner cavity of the step block (1) is provided with a steel frame assembly (11), and the bolt (42) passes through the inner cavity of the steel frame assembly (11).

5. The prefabricated staircase for building construction according to claim 4, characterized in that: The steel bar frame assembly (11) comprises a plurality of trapezoidal steel bar frames (111), wherein the plurality of trapezoidal steel bar frames (111) are welded to each other via connecting steel bars (113), a plurality of rectangular steel bar frames (112) are welded to the surfaces of the connecting steel bars (113), and the rectangular steel bar frames (112) and the trapezoidal steel bar frames (111) are welded to each other.

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