Prefabricated concrete stair modular installation base

Abstract

The application discloses a prefabricated concrete stair modular installation base, and belongs to the technical field of installation bases, which comprises a supporting column, a base and a stair tread, further comprises a splicing installation assembly and an auxiliary installation assembly, the base is located above the supporting column, the stair tread is located outside the base, the splicing installation assembly is arranged between the base and the stair tread, a square plug is embedded at the top of the supporting column, a square groove is formed in the outside of the base, first and second square notches are formed through the outside of the base and the stair tread, the square plug penetrates through the first and second square notches, an installation opening is formed in the outside of the base, and a circular opening is formed in the installation opening, the splicing installation assembly is arranged, the split lifting mode is adopted, the subsequent installation efficiency can be improved, the problem that the installation butt joint difficulty is significantly increased in the lifting process due to the lack of reference points in the traditional installation mode, and the construction progress is affected is solved.

Description

Technical Field

[0001] This invention relates to a modular installation base for precast concrete stairs, belonging to the technical field of installation bases. Background Technology

[0002] Precast concrete stairs are widely used in the construction industry due to their advantages such as high degree of industrialization, fast construction speed, and easy quality control. During the on-site installation of precast concrete stairs, it is usually necessary to reliably connect them to the foundation or substructure and ensure the overall stability of the stair treads.

[0003] In existing technologies, the installation base of precast concrete stairs is mostly constructed using integral casting or pre-embedded connectors. For example, a common practice is to pre-embed a steel plate at the top of the support column, fix the base by welding or bolting, and then cast or anchor the stair treads to the base as a single unit. While this connection method offers high structural strength, it has the following drawbacks: Firstly, in traditional installation bases, the connections between components are mostly fixed by on-site casting or welding, and there is a lack of standardized splicing structures between the support columns, base, and stair treads. Construction requires extensive on-site measurement, positioning, and fixing work, and the installation accuracy depends heavily on the skill level of the construction personnel. The quality of fit between different components is difficult to guarantee, easily leading to problems such as loose connections and positional misalignment.

[0004] Secondly, in the existing base structure, the connection between the stair treads and the base is relatively simple, usually using overlapping or end abutment, lacking a reliable positioning and locking structure. Before pouring or welding is carried out, the treads and the base rely solely on their own weight or simple overlapping to maintain their position, which is prone to displacement due to slight collisions or construction disturbances, resulting in uneven steps and inaccurate positioning, requiring repeated adjustments to meet the installation accuracy requirements.

[0005] Therefore, how to provide a modular installation base for precast concrete stairs that is simple in structure, easy to install, can reliably connect the support column, base and stair treads and requires little on-site work is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a modular installation base for precast concrete stairs that is simple in structure, easy to install, and can reliably connect the support column, base and stair treads with minimal on-site work in order to solve the above problems.

[0007] The present invention achieves the above objectives through the following technical solutions: A modular installation base for a precast concrete staircase includes a support column, a base on the support column, and stair treads extending outward from the base. It also includes a splicing installation component and an auxiliary installation component. The splicing installation component is disposed between the support column, the base, and the stair treads to connect the support column, the base, and the stair treads. The auxiliary installation component is installed on the left and right sides of the stair treads to connect the stair handrails.

[0008] Preferably, the splicing and installation assembly includes a square plug fixedly installed on the top of the support column. A square groove is formed at the top edge of the base where it connects to the stair tread. The length of the square groove matches the width of the stair tread, and the end of the stair tread is inserted into the square groove. A first square slot is provided on the base corresponding to the square plug within the square groove, and a second square slot is provided on the stair tread corresponding to the square plug. The square plug passes through the first and second square slots sequentially. The square plug and the support column are manufactured together, and the square plug is made of high-strength steel. When the square plug is inserted into the base, it forms a connection between the base, the support column, and the stair tread, improving the overall installation efficiency.

[0009] Preferably, it also includes a square plate covering the square groove, the top of the square plug having a plug groove, and the bottom of the square plate having a plug rod corresponding to the plug groove, the plug rod being inserted into the plug groove; the square plate is used to assist in installation, and the plug rod and plug groove form a connection between the square plate, the support column, the base and the stair tread.

[0010] Preferably, the base has two reinforcing grooves on the outside of the square groove, and the two reinforcing grooves are located on the left and right sides of the square groove respectively. The square plate has extensions on the left and right sides, and the bottom of the extensions is fixedly installed with convex blocks corresponding to the reinforcing grooves; the convex blocks play a further reinforcing role.

[0011] Preferably, the square plate has an injection port, the base has a threaded sleeve embedded inside, the convex block has a threaded groove on the outside, and the locking bolt is threaded into the threaded sleeve and the threaded groove to connect and fix the base and the square plate; the locking bolt can fix the base and the convex block after rotation.

[0012] Preferably, the bottom of the base has an installation opening corresponding to the support column, and the installation opening has a circular opening inside; a steel bar is embedded in the top of the support column, and the steel bar is inserted into the circular opening, with the square plug higher than the steel bar; the circular opening makes it easy to insert the steel bar, increasing the contact area between the support column and the base.

[0013] Preferably, the auxiliary installation components include several mounting sleeves embedded on both sides of the stair treads, with the lower end of the stair handrail inserted into the mounting sleeves; this facilitates the later installation of the stair handrail and avoids the hassle of secondary drilling. Preferably, a threaded groove is provided between the mounting sleeve and the stair handrail, and a mounting bolt is screwed into the threaded groove.

[0014] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art: This invention achieves rapid positioning and connection of the three components by sequentially inserting a square plug at the top of the support column into the square slots on the base and stair treads, reducing hoisting and docking time. The mounting opening and circular opening at the bottom of the base interlock with the reinforcing steel column at the top of the support column, increasing the contact area and improving connection stability. The insertion rod at the bottom of the square plate interlocks with the insertion slot at the top of the square plug, and a convex block is inserted into the reinforcement slot, enhancing the reliability of the connection between components. Locking bolts connect the threaded sleeve to the threaded slot on the convex block, fixing the base and square plate, facilitating subsequent grouting to form an integrated structure. Installation sleeves embedded on both sides of the stair treads interlock with the stair handrail and are fixed with installation bolts, avoiding secondary drilling on-site. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a side view of the structure of the present invention.

[0017] Figure 3 This is a partial view of the splicing and installation components used in this practical application.

[0018] Figure 4 This is a partial diagram of the auxiliary installation components used in this utility model.

[0019] Figure 5 For practical purposes Figure 1 Enlarged view of point A in the image.

[0020] Figure 6 For practical purposes Figure 2 Enlarged view of point B in the image.

[0021] In the diagram: 1. Support column; 2. Assembly assembly; 201. Square plug; 202. Square groove; 203. Second square slot; 204. Mounting port; 205. Reinforcing bar column; 206. Square plate; 207. Connecting rod; 208. Convex block; 209. Injection port; 210. Locking bolt; 3. Auxiliary installation assembly; 301. Mounting sleeve; 302. Mounting bolt; 4. Base; 5. Stair tread; 6. Stair handrail. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-6 As shown, a modular installation base for a precast concrete staircase includes a support column 1, a base 4 mounted on the support column 1, and stair treads 5 extending outward from the base 4. It also includes a splicing installation component 2 and an auxiliary installation component 3. The splicing installation component 2 is positioned between the support column 1, the base 4, and the stair treads 5 to connect them. The auxiliary installation component 3 is installed on the left and right sides of the stair treads 5 to connect the stair handrails 6. A square plug 201 sequentially passes through the first square slot and the second square slot 203 on the base 4 and the stair treads 5 to achieve rapid insertion and positioning of the three components. This avoids the alignment difficulties and repeated adjustments caused by the lack of reference points during hoisting in existing technologies, thus reducing the waiting time during installation and connection, and accelerating the construction progress.

[0024] like Figures 1-6 As shown, the splicing and installation component 2 includes a square plug 201 fixedly installed on the top of the support column 1. A square groove 202 is provided at the top edge of the base 4 where it connects with the stair tread 5. The length of the square groove 202 is adapted to the width of the stair tread 5, and the end of the stair tread 5 is inserted into the square groove 202. A first square slot is provided on the base 4 corresponding to the square plug 201 in the square groove 202, and a second square slot 203 is provided on the stair tread corresponding to the square plug 201. The square plug 201 passes through the first square slot and the second square slot 203 in sequence. It also includes a square plate 206 covering the square groove 202. A plug groove is provided on the top of the square plug 201, and a plug rod 207 is provided on the bottom of the square plate 206 corresponding to the plug groove. The plug rod 207 is inserted into the plug groove. Inside the groove; two reinforcing grooves are opened on the outside of the square groove 202 on the base 4, and the two reinforcing grooves are respectively located on the left and right sides of the square groove 202. The square plate 206 has extensions on the left and right sides, and the bottom of the extensions is fixedly installed with convex blocks 208 corresponding to the reinforcing grooves; the square plate 206 has a filling port 209. The inside of the base 4 is embedded with a threaded sleeve, and the outside of the convex block 208 has a threaded groove. The locking bolt 210 is threadedly connected to the threaded sleeve and the threaded groove to connect and fix the base 4 and the square plate 206; the bottom of the base 4 has an installation port 204 corresponding to the support column 1, and the installation port 204 has a circular opening inside; the top of the support column 1 is embedded with a steel bar column 205, which is inserted into the circular opening, and the square plug 201 is higher than the steel bar column 205.

[0025] like Figures 1-4 As shown, the auxiliary installation component 3 includes several installation sleeves 301 embedded on both sides of the stair tread 5, and the lower end of the stair handrail 6 is inserted into the installation sleeves 301. The installation sleeves 301 are designed to be embedded, and a threaded groove is provided between the installation sleeves 301 and the stair handrail 6. The installation bolts 302 are screwed into the threaded groove.

[0026] The installation sleeve 301 adopts an embedded design, which facilitates the later installation of the stair handrail 6 and avoids the trouble of secondary drilling. The lower part of the stair handrail 6 is inserted into the installation sleeve 301 inside the stair tread 5. A threaded groove is opened through the installation sleeve 301 and the stair handrail 6. The bolt 302 is screwed into the threaded groove to fix the stair handrail 6 and the installation sleeve 301 firmly, thus completing the installation of the stair handrail 6. The overall structure achieves quick docking and installation of the support column 1, base 4 and stair tread 5 through the splicing installation component 2, reducing docking waiting time and improving construction progress.

[0027] When using this invention, the support column 1 is first installed at a preset ground position, and its bottom is poured. After the concrete solidifies, the support column 1 is firmly fixed to the ground.

[0028] After the support column 1 is fixed, the base 4 is hoisted to its top. The base 4 has an installation opening 204 at its bottom, with a circular opening inside. A reinforcing bar 205 is embedded in the top of the support column 1. During hoisting, the reinforcing bar 205 is inserted into the circular opening to increase the contact area between the support column 1 and the base 4, achieving initial positioning. Simultaneously, a square groove 202 is formed on the top edge of the base 4, and a first square slot and a second square slot 203 are correspondingly formed on the base 4 and the stair tread 5. During the hoisting of the base 4, the square plug 201 at the top of the support column 1 passes sequentially through the first square slot on the base 4 and the second square slot 203 on the stair tread 5, forming a plug-in connection between the three.

[0029] After the base 4 is installed in place, the stair tread 5 is hoisted and its end is inserted into the square groove 202 of the base 4, so that the stair tread 5 fits tightly with the base 4. The stair tread 5 and the base 4 are quickly connected and fixed by the insertion and cooperation of the square plug 201 with the first square groove and the second square groove 203.

[0030] Subsequently, the square plate 206 is placed over the square groove 202, with its bottom insertion rod 207 inserted into the insertion slot at the top of the square plug 201. At the same time, the protruding blocks 208 below the extensions on both sides of the square plate 206 are engaged in the reinforcing grooves on the base 4. The threaded rod 210 is tightened to fix the square plate 206 to the base 4. Cement grout is then injected through the injection port 209 to form an integrated structure at the joints of the components.

[0031] By adopting the above-mentioned disassembly hoisting and plug-in positioning method, the alignment difficulties and repeated adjustments caused by the lack of reference points in traditional installation are avoided, the docking waiting time is reduced, and the construction efficiency is improved.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A modular installation base for a precast concrete staircase, comprising a support column (1), a base (4) mounted on the support column (1), and stair treads (5) extending outward from the base (4) mounted on the base (4), characterized in that: It also includes a splicing installation component (2) and an auxiliary installation component (3). The splicing installation component (2) is set between the support column (1), the base (4) and the stair tread (5) to connect the support column (1), the base (4) and the stair tread (5). The auxiliary installation component (3) is installed on the left and right sides of the stair tread (5) to connect the stair handrail (6).

2. The modular installation base for precast concrete stairs according to claim 1, characterized in that: The splicing and installation component (2) includes a square plug (201) fixedly installed on the top of the support column (1). A square groove (202) is provided at the top edge of the base (4) where it connects with the stair tread (5). The length of the square groove (202) is adapted to the width of the stair tread (5). The end of the stair tread (5) is inserted into the square groove (202). A first square slot is provided on the base (4) corresponding to the square plug (201) in the square groove (202). A second square slot (203) is provided on the stair tread corresponding to the square plug (201). The square plug (201) passes through the first square slot and the second square slot (203) in sequence.

3. The modular installation base for precast concrete stairs according to claim 2, characterized in that: It also includes a square plate (206) that covers the square groove (202), the top of the square plug (201) is provided with a plug groove, and the bottom of the square plate (206) is provided with a plug rod (207) corresponding to the plug groove, and the plug rod (207) is inserted into the plug groove.

4. The modular installation base for precast concrete stairs according to claim 3, characterized in that: Two reinforcing grooves are provided on the base (4) outside the square groove (202). The two reinforcing grooves are located on the left and right sides of the square groove (202) respectively. Extensions are provided on the left and right sides of the square plate (206). A convex block (208) is fixedly installed at the bottom of the extension corresponding to the reinforcing groove.

5. The modular installation base for precast concrete stairs according to claim 4, characterized in that: A filling port (209) is provided on the square plate (206). A threaded sleeve is embedded inside the base (4). A threaded groove is provided on the outside of the convex block (208). A locking bolt (210) is threadedly connected to the threaded sleeve and the threaded groove to connect and fix the base (4) and the square plate (206).

6. The modular installation base for precast concrete stairs according to claim 1, characterized in that: The bottom of the base (4) is provided with an installation port (204) corresponding to the support column (1), and a circular opening is provided inside the installation port (204); a steel bar column (205) is embedded in the top of the support column (1), the steel bar column (205) is inserted into the circular opening, and the square plug (201) is higher than the steel bar column (205).

7. The modular installation base for precast concrete stairs according to claim 1, characterized in that: The auxiliary installation component (3) includes several installation sleeves (301) embedded on both sides of the stair tread (5), and the lower end of the stair handrail (6) is inserted into the installation sleeves (301).

8. The modular installation base for precast concrete stairs according to claim 7, characterized in that: A threaded groove is provided between the mounting sleeve (301) and the stair handrail (6), and a mounting bolt (302) is screwed into the threaded groove.

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