Fabricated concrete stair

Abstract

The utility model relates to the technical field of constructional engineering, in particular to an assembly type concrete stair which comprises a stair mechanism and is used for connecting an upper floor and a lower floor in a building. First mounting holes are formed in the rear sides of the outer walls of the two ends of the reinforced concrete stair block; second mounting holes are formed in the upper sides of the outer walls of the two ends of the reinforced concrete stair block; the connecting assembly comprises a steel plate fixed between the upper and lower adjacent reinforced concrete stair blocks; the reinforcing assembly comprises a reinforcing plate fixed between the two ends of the vertically adjacent reinforced concrete stair blocks; the strength of the combined surfaces of the reinforced concrete stair blocks and the steel plates is improved through the supporting frames, and the bearing capacity is improved; and additional pulling force is provided through the reinforcing assemblies, the connecting strength between the reinforced concrete stair blocks is enhanced, and the whole structure is more stable when bearing large loads or external force impact.

Description

TECHNICAL FIELD

[0001] The utility model relates to building engineering technical field, concretely is a kind of fabricated concrete stair. BACKGROUND

[0002] Building assembled from prefabricated parts is called fabricated building, which is different from traditional cast-in-place building method, and has the characteristics of energy saving, environmental protection, formwork saving and shortening construction period.Fabricated stair, as an important part of fabricated building, plays an important role in normal use and emergency evacuation of the whole building as the main vertical traffic and emergency evacuation channel of building;

[0003] According to the search of the public number: CN218970474U, a kind of fabricated concrete stair is disclosed, and the technical scheme in this technology is disclosed as follows: "a kind of fabricated concrete stair, including upper fixed platform, lower fixed platform and stair body, the both sides of stair body are equipped with fixed platform, installation platform is equipped on the upper fixed platform and lower fixed platform, installation platform is equipped with receiving groove, receiving block that is matched with receiving groove is arranged on fixed platform, fixed bolt is arranged between fixed platform and installation platform, stair body includes stair block, stair body is connected by stair block, stair block includes concrete block and steel plate, and concrete block and steel plate are connected by bolt" and other technical schemes, with "by setting installation platform, fixed platform, receiving block and receiving groove, it is convenient to splice and fix between upper fixed platform and stair body and between lower fixed platform and stair body, improve the stability between stair body" and other technical effects;

[0004] In the above scheme, the connection between each stair block and steel plate only relies on the support of support rod;However, when facing larger load or external impact, this connection mode may face the risk of damage due to the limited bearing capacity of support rod;In addition, under the influence of long-term load and complex external environment (such as corrosion, wear and tear and other factors), the performance of support rod may gradually decline, once the support rod is damaged, the overall stability of the stair will be directly affected, which brings safety hazard. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of fabricated concrete stair, the strength of reinforced concrete stair block and steel plate combination surface is improved by support frame, and its bearing capacity is increased;Additional tension is provided by reinforcing assembly to enhance the connection strength between reinforced concrete stair blocks, so that the overall structure is more stable when bearing larger load or external impact.

[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a kind of fabricated concrete stair, including stair mechanism and being used to connect upper and lower floors in building, the stair mechanism includes:

[0007] The main body assembly comprises a plurality of reinforced concrete stair blocks arranged in a stair form and constituting a stair mechanism, first mounting holes are formed in the rear side of the outer wall of the two ends of the reinforced concrete stair blocks, and second mounting holes are formed in the upper side of the outer wall of the two ends of the reinforced concrete stair blocks;

[0008] The connecting assembly comprises a steel plate fixed between the upper and lower adjacent reinforced concrete stair blocks;

[0009] The reinforcing assembly comprises a reinforcing plate fixed between the two ends of the upper and lower adjacent reinforced concrete stair blocks;

[0010] The supporting assembly comprises a supporting frame fixed between the bottom of the steel plate and the front end of the lower reinforced concrete stair block.

[0011] Preferably, the connecting assembly further comprises first fixing holes formed in the inner sides of the rear end of the steel plate, and second fixing holes are formed in the inner sides of the front end of the steel plate.

[0012] Preferably, the reinforcing assembly further comprises a plurality of reinforcing ribs fixed between the common vertical surfaces of the reinforcing plates, and a round hole is formed in the inner upper end of the reinforcing plate.

[0013] Preferably, the supporting assembly further comprises a first assembly hole formed in the rear lower end of the supporting frame, and a second assembly hole is formed in the front upper end of the supporting frame.

[0014] Preferably, the stair mechanism further comprises a non-slip pad fixedly attached to the rear end surface of the top of the reinforced concrete stair block.

[0015] Preferably, the top of the stair mechanism is provided with a guardrail, and the guardrail comprises a stand fixed to the top of the reinforcing plate, and a handrail is fixed between the tops of a plurality of stands.

[0016] Advantages

[0017] The utility model provides a kind of fabricated concrete stair.Compared with prior art, it has the following advantages:

[0018] 1, the reinforcing plate is fixed with the lower reinforced concrete stair block by the second mounting hole cooperation bolt, and the reinforcing plate is fixed with the upper reinforced concrete stair block by the first mounting hole cooperation bolt, so that the additional tension is provided between the adjacent main body assemblies by the reinforcing assembly, the connection strength between the reinforced concrete stair blocks is enhanced, the overall structure is more stable when bearing larger load or external force impact, and it helps to distribute load more evenly on the entire stair mechanism.

[0019] 2, support frame through the first assembly hole cooperate bolt fixed in reinforced concrete stair block front end, support frame through the second assembly hole cooperate bolt fixed in steel plate bottom, thereby improve the strength of reinforced concrete stair block and steel plate combination surface, increase its carrying capacity. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 is the assembly drawing of several stair mechanisms in the utility model;

[0022] Figure 3 is the structure schematic diagram of stair mechanism in the utility model;

[0023] Figure 4 is the top structure schematic diagram of main component and connecting assembly in the utility model;

[0024] Figure 5 is the bottom structure schematic diagram of main component and connecting assembly in the utility model;

[0025] Figure 6 is the structure schematic diagram of reinforcing assembly in the utility model;

[0026] Figure 7 is the structure schematic diagram of guardrail in the utility model.

[0027] In the drawing: 1, stair mechanism; 11, main component; 111, reinforced concrete stair block; 112, first mounting hole; 113, second mounting hole; 12, connecting assembly; 121, steel plate; 122, first fixed hole; 123, second fixed hole; 13, reinforcing assembly; 131, reinforcing plate; 132, reinforcing rib; 133, round hole; 14, support assembly; 141, support frame; 142, first assembly hole; 143, second assembly hole; 15, non-slip pad; 2, guardrail; 21, vertical frame; 22, handrail. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Please refer to Figure 1 - Figure 7The utility model provides a technical scheme: an assembled concrete stair, including stair mechanism 1 and be used for connecting the upper and lower floors in building, stair mechanism 1 includes:

[0030] Main body assembly 11, including the stair mechanism 1 and the stair mechanism 1 is distributed in several reinforced concrete stair blocks 111 of ladder, and the first installation hole 112 is seted up in the outer wall rear side of both ends of reinforced concrete stair block 111, and the second installation hole 113 is seted up in the upper side of both ends of reinforced concrete stair block 111 outer wall,

[0031] Connecting assembly 12, including the steel sheet 121 fixed between the upper and lower adjacent reinforced concrete stair blocks 111,

[0032] Reinforcing assembly 13, including the reinforcing plate 131 fixed between the both ends of the upper and lower adjacent reinforced concrete stair blocks 111,

[0033] Supporting assembly 14, including the support frame 141 fixed between the bottom of steel sheet 121 and the front end of the lower reinforced concrete stair block 111.

[0034] In the embodiment, when the adjacent reinforced concrete stair blocks 111 are assembled through the steel sheet 121, the reinforcing plate 131 is fixed with the lower reinforced concrete stair block 111 through the second installation hole 113 and the screw bolt, and the reinforcing plate 131 is fixed with the upper reinforced concrete stair block 111 through the first installation hole 112 and the screw bolt, so that the adjacent main body assemblies 11 are connected through the reinforcing assembly 13 to provide additional tension, enhance the connection strength between the reinforced concrete stair blocks 111, make the overall structure more stable when bearing large load or external force impact, and help to distribute the load more evenly on the entire stair mechanism 1, reduce the concentrated stress borne by the supporting assembly 14 alone, thereby prolonging the service life of the overall structure.

[0035] Specifically, the connecting assembly 12 further includes first fixing holes 122 opened in the rear end of the steel sheet 121, and second fixing holes 123 are opened in the front end of the steel sheet 121.

[0036] In the embodiment, the steel sheet 121 is fixed at the top of the lower reinforced concrete stair block 111 through the first fixing hole 122 and the screw bolt, and the steel sheet 121 is fixed at the bottom of the upper reinforced concrete stair block 111 through the second fixing hole 123 and the screw bolt, so as to assemble the adjacent reinforced concrete stair blocks 111.

[0037] Specifically, the reinforcing assembly 13 further includes a plurality of reinforcing ribs 132 fixed between the common vertical faces of the reinforcing plate 131, and a round hole 133 is opened in the upper end of the reinforcing plate 131.

[0038] In the embodiment, the overall strength of the reinforcing plate 131 is improved by the reinforcing rib 132, so that the reinforcing plate 131 is prevented from being deformed under force during use.

[0039] Specifically, the support assembly 14 further comprises a first assembly hole 142 formed at the rear lower end of the support frame 141, and a second assembly hole 143 formed at the front upper end of the support frame 141.

[0040] In the embodiment, the support frame 141 is fixed at the front end of the reinforced concrete stair block 111 through the first assembly hole 142 and bolts, and the support frame 141 is fixed at the bottom of the steel plate 121 through the second assembly hole 143 and bolts, so that the strength of the combined surface of the reinforced concrete stair block 111 and the steel plate 121 is improved, and the load-carrying capacity is increased.

[0041] Specifically, the stair mechanism 1 further comprises an anti-skid pad 15 fixedly attached to the top rear end surface of the reinforced concrete stair block 111.

[0042] In the embodiment, the anti-skid pad 15 reduces the risk of falling down when a person walks, and covers the bolts at the upper end of the reinforced concrete stair block 111, thereby improving the aesthetic appearance.

[0043] Specifically, the top two ends of the stair mechanism 1 are provided with guardrails 2, and the guardrail 2 comprises a stand 21 fixed to the top of the reinforcing plate 131, and a handrail 22 fixed between the tops of a plurality of stands 21.

[0044] In the embodiment, the reinforcing plate 131 can fix the stand 21 to the top through the round hole 133 and bolts, and the handrail 22 is fixed to the top of the stand 21 through bolts.

[0045] The working principle and use process of the utility model are as follows: first, the steel plate 121 is fixed at the top of the lower reinforced concrete stair block 111 through the first fixing hole 122 and bolts, and the steel plate 121 is fixed at the bottom of the upper reinforced concrete stair block 111 through the second fixing hole 123 and bolts, so that the adjacent reinforced concrete stair blocks 111 are assembled;

[0046] Then, the support frame 141 is fixed at the front end of the reinforced concrete stair block 111 through the first assembly hole 142 and bolts, and the support frame 141 is fixed at the bottom of the steel plate 121 through the second assembly hole 143 and bolts, so that the strength of the combined surface of the reinforced concrete stair block 111 and the steel plate 121 is improved, and the load-carrying capacity is increased.

[0047] Finally, the reinforcing plate 131 is fixed to the lower reinforced concrete stair block 111 with bolts through the second mounting hole 113, and the reinforcing plate 131 is fixed to the upper reinforced concrete stair block 111 with bolts through the first mounting hole 112. This allows the adjacent main components 11 to provide additional tensile force through the reinforcing components 13, enhancing the connection strength between the reinforced concrete stair blocks 111. This makes the overall structure more stable when subjected to large loads or external impacts, and also helps to distribute the load more evenly across the entire stair mechanism 1, reducing the concentrated stress borne solely by the support components 14, thereby extending the service life of the overall structure.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] 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 prefabricated concrete staircase, characterized in that: Including a stair mechanism (1) for connecting upper and lower floors in a building, the stair mechanism (1) includes: The main component (11) includes several reinforced concrete stair blocks (111) that form the stair mechanism (1) and are distributed in a stepped manner. The rear side of the outer wall at both ends of the reinforced concrete stair blocks (111) is provided with a first mounting hole (112), and the upper side of the outer wall at both ends of the reinforced concrete stair blocks (111) is provided with a second mounting hole (113). The connecting assembly (12) includes a steel plate (121) fixed between adjacent reinforced concrete stair blocks (111); The reinforcing component (13) includes a reinforcing plate (131) fixed between the two ends of adjacent reinforced concrete stair blocks (111); The support assembly (14) includes a support frame (141) fixed between the bottom of the steel plate (121) and the front end of the lower reinforced concrete stair block (111).

2. The prefabricated concrete staircase according to claim 1, characterized in that: The connecting assembly (12) also includes a first fixing hole (122) on both sides of the rear end of the steel plate (121) and a second fixing hole (123) on both sides of the front end of the steel plate (121).

3. A prefabricated concrete staircase according to claim 1, characterized in that: The reinforcement component (13) also includes several reinforcing ribs (132) fixed between the common vertical planes of the reinforcement plate (131), and a circular hole (133) is provided inside the upper end of the reinforcement plate (131).

4. A prefabricated concrete staircase according to claim 1, characterized in that: The support assembly (14) further includes a first mounting hole (142) located at the rear of the lower end of the support frame (141), and a second mounting hole (143) located above the front end of the support frame (141).

5. A prefabricated concrete staircase according to claim 1, characterized in that: The stair mechanism (1) also includes an anti-slip pad (15) that is attached and fixed to the top rear end surface of the reinforced concrete stair block (111).

6. A prefabricated concrete staircase according to claim 1, characterized in that: The stair mechanism (1) is equipped with guardrails (2) at both ends of the top. The guardrails (2) include uprights (21) fixed to the top of the reinforcing plate (131), and handrails (22) are fixed between the tops of several uprights (21).

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