Lightweight fabricated concrete stair

Abstract

The utility model relates to concrete building technical field especially is a kind of light prefabricated concrete stair, including fixed platform, the top of fixed platform is equipped with fixed layer, the inboard of fixed layer is inlaid with reinforcing plate, the top of fixed platform is fixedly connected with the first bolt that penetrates fixed layer and reinforcing plate, the outside thread of first bolt is connected with first nut, the left side fixed connection of fixed layer and reinforcing plate has first glass fiber composite layer, in the utility model, by integrally-formed first glass fiber composite layer, concrete block, support strip and second glass fiber composite layer replace site pouring, and first bolt, first nut, second bolt and second nut are quickly assembled together with fixed layer by finished product stair, reduce overall weight by the interval between hollow groove, first glass fiber composite layer, second glass fiber composite layer and support strip, reduce floor weight pressure, avoid collapse due to excessive weight.

Description

Technical Field

[0001] This utility model relates to the field of concrete building technology, specifically a lightweight prefabricated concrete staircase. Background Technology

[0002] Concrete staircases, as important vertical transportation components in buildings, are widely used in residential, public, and industrial facilities. Their core technologies involve three dimensions: structural design, material performance, and construction process. The goal is to improve construction efficiency, reduce costs, and optimize space utilization and aesthetics while ensuring safe load-bearing capacity.

[0003] Existing concrete staircases are generally made by on-site cement casting, which takes a long time to solidify and is quite heavy. In some self-built houses, the floor slabs are subjected to great pressure for a long time, which poses a risk of collapse. Therefore, a lightweight prefabricated concrete staircase is proposed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a lightweight prefabricated concrete staircase to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A lightweight prefabricated concrete staircase includes a fixed platform. A fixed layer is provided at the top of the fixed platform, and a reinforcing plate is embedded in the inner side of the fixed layer. A first bolt, penetrating the fixed layer and the reinforcing plate, is fixedly connected to the top of the fixed platform. A first nut is threaded onto the outer side of the first bolt. A first fiberglass composite layer is fixedly connected to the left side of the fixed layer and the reinforcing plate. A concrete block is provided inside the first fiberglass composite layer. Multiple support strips, spaced apart, are fixedly connected between the first fiberglass composite layer and the concrete block. A hollow groove is formed inside the concrete block, and a second fiberglass composite layer is fixedly connected to the inner side of the hollow groove. A fixed block is provided at the bottom of the fixed platform, and a second bolt, penetrating the fixed block, is fixedly connected to the bottom of the fixed platform. A second nut is threaded onto the outer side of the second bolt. A support plate is fixedly connected to the left side of the fixed block, and a limiting plate located outside the first fiberglass composite layer is fixedly connected to the left side of the support plate.

[0007] Preferably, the first bolt and the first nut are a set, and there are four sets in total. The first bolt and the first nut are symmetrically arranged at the top of the fixed platform.

[0008] Preferably, the second bolt and the second nut are a set, and there are four sets in total. The second bolt and the second nut are symmetrically arranged at the bottom of the fixed platform.

[0009] Preferably, the first glass fiber composite layer, the concrete block, the three hollow grooves, and the three second glass fiber composite layers are grouped together, with a total of four groups arranged in a stepped manner.

[0010] Preferably, the shape of the hollow groove matches the shape of the second glass fiber composite layer, both being triangular, and the inner dimensions of the hollow groove match the inner dimensions of the second glass fiber composite layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, by setting up components such as a fixed layer, a first glass fiber composite layer, a concrete block, a support strip, a hollow groove, and a second glass fiber composite layer, the first glass fiber composite layer, the concrete block, the support strip, and the second glass fiber composite layer are integrally formed to replace on-site casting. The prefabricated staircase and the fixed layer are quickly assembled together by the first bolt, the first nut, the second bolt, and the second nut. The gaps between the hollow groove, the first glass fiber composite layer, the second glass fiber composite layer, and the support strip reduce the overall weight and reduce the pressure on the floor, thus avoiding collapse due to excessive weight. This solves the problem that existing concrete staircases are generally cast on-site with cement, which has a long solidification time and is heavy. For example, some self-built houses have floors that bear great pressure for a long time, which poses a risk of collapse.

[0013] 2. In this utility model, the reinforcement plate effectively strengthens the connection strength between the staircase and the fixed platform. The fixing block, support plate and limiting plate further strengthen the overall strength of the concrete staircase and improve the support force. At the same time, the gap between the support plate and the first glass fiber composite layer further reduces the overall weight, thus strengthening the support effect while maintaining a relatively light weight. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the present invention.

[0016] Figure 3 This is a detailed structural diagram of the present invention.

[0017] In the diagram: 1. Fixed platform; 2. Fixed layer; 3. Reinforcing plate; 4. First bolt; 5. First nut; 6. First fiberglass composite layer; 7. Concrete block; 8. Support strip; 9. Hollow groove; 10. Second fiberglass composite layer; 11. Fixed block; 12. Second bolt; 13. Second nut; 14. Support plate; 15. Limiting plate. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Please see Figure 1-3 A lightweight prefabricated concrete staircase includes a fixed platform 1, a fixed layer 2 at the top of the fixed platform 1, a reinforcing plate 3 embedded on the inner side of the fixed layer 2, a first bolt 4 that penetrates the fixed layer 2 and the reinforcing plate 3 fixedly connected to the top of the fixed platform 1, a first nut 5 threadedly connected to the outer side of the first bolt 4, a first glass fiber composite layer 6 fixedly connected to the left side of the fixed layer 2 and the reinforcing plate 3, a concrete block 7 provided on the inner side of the first glass fiber composite layer 6, a plurality of support strips 8 fixedly connected between the first glass fiber composite layer 6 and the concrete block 7 at intervals, a hollow groove 9 opened on the inner side of the concrete block 7, a second glass fiber composite layer 10 fixedly connected to the inner side of the hollow groove 9, a fixed block 11 at the bottom of the fixed platform 1, a second bolt 12 that penetrates the fixed block 11 fixedly connected to the bottom of the fixed platform 1, a second nut 13 threadedly connected to the outer side of the second bolt 12, a support plate 14 fixedly connected to the left side of the fixed block 11, and a limiting plate 15 located outside the first glass fiber composite layer 6 fixedly connected to the left side of the support plate 14.

[0020] The first bolt 4 and the first nut 5 form a group, with a total of four groups. The first bolt 4 and the first nut 5 are symmetrically arranged at the top of the fixed platform 1. The four groups of first bolt 4 and first nut 5 can more stably fix the concrete staircase as a whole. The second bolt 12 and the second nut 13 form a group, with a total of four groups. The second bolt 12 and the second nut 13 are symmetrically arranged at the bottom of the fixed platform 1. The four groups of second bolt 12 and second nut 13 can more stably fix the support plate 14 and the limiting plate 15. The first glass fiber composite layer 6, the concrete block 7, the three hollow grooves 9, and the three second glass fiber composite layers 10 form a group, with a total of four groups, and are arranged in a stepped shape. Through multiple hollows, the first glass fiber composite layer 6 and the second glass fiber composite layer 10 can significantly reduce the overall weight. The shape of the hollow groove 9 matches the shape of the second glass fiber composite layer 10, both being triangular. The inner dimensions of the hollow groove 9 match the inner dimensions of the second glass fiber composite layer 10. The triangular structure reduces weight while ensuring stability and support.

[0021] Workflow: When a lightweight prefabricated concrete staircase is required, firstly, the support plate 14 and the limiting plate 15 are engaged from bottom to top onto the second bolt 12 using the fixing block 11, and then fixed with the second nut 13. After fixing, align the holes on the fixing layer 2 with the first bolt 4 and engage them. As the concrete staircase composed of the first fiberglass composite layer 6 and concrete block 7 falls, the bottom first fiberglass composite layer 6 and concrete block 7 will fit perfectly against the limiting plate 15, which provides limitation and support. The upper part is limited and fixed by the fixing layer 2, the reinforcing plate 3, and the first bolt 4. Finally, the first nut 5 is used to secure the staircase. For fixation, the concrete block 7 is reinforced and supported by a first glass fiber composite layer 6 and a second glass fiber composite layer 10, which are stronger than concrete but lighter. The weight of the concrete block 7 is reduced by the gaps between the support strips 8 and the holes in the hollow groove 9. The reinforcement plate 3 effectively strengthens the connection strength between the staircase and the fixed platform 1. The overall strength of the concrete staircase is further strengthened by the fixed block 11, the support plate 14, and the limiting plate 15. While improving the support force, the overall weight is further reduced by the gap between the support plate 14 and the first glass fiber composite layer 6. The support effect is strengthened while maintaining a relatively light weight.

[0022] 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 can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight prefabricated concrete staircase, comprising a fixed platform (1), characterized in that: The top of the fixed platform (1) is provided with a fixed layer (2), and a reinforcing plate (3) is embedded in the inner side of the fixed layer (2). A first bolt (4) is fixedly connected to the top of the fixed platform (1) through the fixed layer (2) and the reinforcing plate (3). A first nut (5) is threaded on the outer side of the first bolt (4). A first glass fiber composite layer (6) is fixedly connected to the left side of the fixed layer (2) and the reinforcing plate (3). A concrete block (7) is provided on the inner side of the first glass fiber composite layer (6). Multiple supports are fixedly connected between the first glass fiber composite layer (6) and the concrete block (7) at intervals. The support bar (8) has a hollow groove (9) on the inner side of the concrete block (7). A second glass fiber composite layer (10) is fixedly connected to the inner side of the hollow groove (9). A fixing block (11) is provided at the bottom of the fixing platform (1). A second bolt (12) that penetrates the fixing block (11) is fixedly connected to the bottom of the fixing platform (1). A second nut (13) is threadedly connected to the outer side of the second bolt (12). A support plate (14) is fixedly connected to the left side of the fixing block (11). A limiting plate (15) located outside the first glass fiber composite layer (6) is fixedly connected to the left side of the support plate (14).

2. The lightweight prefabricated concrete staircase according to claim 1, characterized in that: The first bolt (4) and the first nut (5) are a set, and there are four sets in total. The first bolt (4) and the first nut (5) are symmetrically arranged at the top of the fixed platform (1).

3. A lightweight prefabricated concrete staircase according to claim 1, characterized in that: The second bolt (12) and the second nut (13) are a set, and there are four sets in total. The second bolt (12) and the second nut (13) are symmetrically arranged at the bottom of the fixed platform (1).

4. A lightweight prefabricated concrete staircase according to claim 1, characterized in that: The first glass fiber composite layer (6), the concrete block (7), the three hollow grooves (9) and the three second glass fiber composite layers (10) form a group, and there are four groups in total, arranged in a stepped manner.

5. A lightweight prefabricated concrete staircase according to claim 1, characterized in that: The shape of the hollow groove (9) matches the shape of the second glass fiber composite layer (10), both being triangular. The inner dimensions of the hollow groove (9) match the inner dimensions of the second glass fiber composite layer (10).

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