Stair template

Abstract

This utility model relates to the field of building construction technology and discloses a staircase formwork, comprising: a step assembly; side plate assemblies, disposed opposite to each other on both sides of the step assembly; a bottom plate assembly, disposed at the bottom of the step assembly; the step assembly, side plate assembly, and bottom plate assembly enclose a pouring cavity, the interior of which has a pouring space suitable for pouring concrete; and a floor slab mold joint, adapted to connect with a floor slab mold, the floor slab mold including a floor slab forming space, the pouring space being connected to the floor slab forming space. By assembling and connecting the step assembly, side plate assembly, and bottom plate assembly, construction efficiency is improved, splicing steps are simplified, overall consistency is enhanced, and the concrete pouring of the entire staircase section can be completed in one go, avoiding the joint defects caused by traditional layered pouring. By connecting the pouring space and the floor slab forming space, the staircase and adjacent floor slabs can be poured and formed simultaneously.

Description

Technical Field

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

[0002] Staircase formwork is a temporary mold used in building construction for pouring concrete stairs, typically made of wood or steel. Its structure includes components such as a base plate, side plates, and treads, assembled precisely according to the staircase design dimensions to ensure that the tread height, width, and slope meet specifications. The formwork must possess sufficient strength and stability to withstand the weight of the concrete and construction loads, and is removed after pouring. Staircase formwork directly affects the geometric accuracy and surface quality of the stairs, and is a crucial auxiliary tool for the formation of cast-in-place reinforced concrete stairs.

[0003] Traditional staircase formwork construction suffers from numerous drawbacks, demanding high levels of worker skill and construction management expertise. The formwork erection process is extremely complex, requiring numerous meticulous steps including positioning and layout, scaffolding erection, side formwork installation, step formwork assembly, reinforcement, and correction. Deviations in any stage can affect the final product quality. Related technologies often employ piecemeal assembly methods, requiring on-site cutting and splicing of timber or steel formwork. This is not only time-consuming and labor-intensive but also exacerbates wear and tear at the joints due to repeated disassembly and assembly. Manual splicing makes it difficult to ensure consistent step heights, often leading to cumulative errors and issues such as insufficient staircase clearance, violating mandatory specifications and posing risks to project acceptance. These systemic defects force construction companies to invest significant manpower in secondary repairs, increasing quality control costs and time pressure. Utility Model Content

[0004] In view of this, the present invention provides a stair formwork to solve the problem that traditional stair formwork materials are temporarily assembled and have a low turnover rate, making it impossible to integrally cast.

[0005] This utility model provides a staircase template, comprising:

[0006] The step assembly includes tread template units and riser template units, with multiple tread template units and multiple riser template units alternately connected to form the step assembly; side plate assemblies are arranged opposite each other on both sides of the step assembly; and bottom plate assembly is arranged at the bottom of the step assembly.

[0007] The stepped assembly, side plate assembly, and bottom plate assembly enclose and form a casting cavity, which has a casting space suitable for pouring concrete.

[0008] The stair formwork also includes: a floor slab mold joint, which is suitable for connection with the floor slab mold. The floor slab mold includes a floor slab forming space, and the pouring space is connected to the floor slab forming space.

[0009] Beneficial Effects: The stair formwork provided by this utility model improves construction efficiency by assembling and connecting the step components, side plate components, and bottom plate components. Compared with the existing technology where wooden or steel formwork needs to be temporarily cut and assembled on-site, this method improves construction efficiency. The step components, which use alternating connection of tread formwork units and riser formwork units, directly fix the tread formwork units and riser formwork units, and then assemble the side plate components and bottom plate components with the step components. This simplifies the splicing steps, improves overall consistency, and allows the concrete pouring of the entire staircase to be completed in one go. This avoids the joint defects caused by traditional layered pouring. The joint of the floor slab mold achieves seamless connection between the staircase and the floor slab mold. By connecting the pouring space and the floor slab forming space, the staircase and adjacent floor slabs can be poured and formed simultaneously. This not only eliminates the risk of grout leakage at the joint in the traditional process, but also improves the overall structural integrity.

[0010] In one alternative embodiment, the casting cavity includes a casting port adapted to communicate with the floor slab forming space.

[0011] Beneficial effects: This utility model achieves simultaneous one-time pouring of concrete for the staircase and the floor slab by setting a pouring port on the pouring cavity of the staircase formwork that is connected to the floor slab forming space. This improves construction efficiency and structural integrity, avoids the cold joint problem caused by traditional staged pouring, enhances the stability of the joint between the staircase and the floor slab, and avoids quality defects such as grout leakage and misalignment at the joint.

[0012] In one alternative embodiment, the tread template unit includes vent holes adapted to discharge residual gas in the pouring space during pouring.

[0013] Beneficial effects: This utility model effectively solves the quality problems caused by gas retention during concrete pouring by setting vent holes on the tread template unit. This vent hole design allows residual gas in the pouring space to escape smoothly, ensuring that the concrete densely fills every corner. It guarantees efficient venting without causing excessive loss of cement paste, thus improving construction convenience.

[0014] In one alternative embodiment, the support assembly is composed of horizontal support rods and longitudinal support rods connected together, and at least one horizontal support rod and the longitudinal support rod together constitute a truss-type support structure.

[0015] Beneficial effects: This utility model improves the overall rigidity and stability of the stair formwork system by adopting a truss-type support structure. The spatial truss structure formed by the connection of horizontal and vertical support rods through nodes provides a guarantee of stability for stair construction.

[0016] In one alternative implementation, the base plate assembly is connected to both the transverse support rod and the longitudinal support rod.

[0017] Beneficial effects: This utility model forms a rigid triangular force system by directly connecting the base plate assembly with the transverse and longitudinal support rods, which evenly transfers the concrete load to the entire support system. The use of standardized connection nodes enables rapid assembly and disassembly, thus improving construction efficiency.

[0018] In one alternative embodiment, the side panel assembly includes a side panel body and a mounting portion, and the step assembly is detachably connected to the side panel assembly via the mounting portion.

[0019] Beneficial effects: This utility model achieves rapid assembly and precise positioning of stair formwork through a side plate assembly that can be detachably connected to the step assembly, improving construction efficiency and forming quality. It shortens the assembly and disassembly time of a single side formwork, improving efficiency compared to traditional fixed connections; the bolt-positioned connection method in the installation part allows for the replacement of damaged side plates without removing the support system, improving maintenance efficiency.

[0020] In one alternative embodiment, the mounting part is a mounting hole, which is formed on the surface of the side plate body, and the side plate body and the stepped assembly are detachably connected by bolts.

[0021] Beneficial effects: This utility model achieves rapid disassembly and positioning of stair formwork by setting mounting holes on the side plate body and using bolt connection, thus improving construction efficiency.

[0022] In one alternative embodiment, the longitudinal support rod includes a height-adjustable base.

[0023] Beneficial effects: This utility model achieves precise leveling and rapid adaptation of the stair formwork support system by setting a height-adjustable base at the bottom of the longitudinal support rod, thereby improving construction efficiency and quality stability. The adjustment base adopts a threaded sleeve structure to compensate for floor construction errors.

[0024] In one alternative embodiment, the contact surfaces of the transverse and longitudinal support rods of the support assembly with the base plate assembly are provided with elastic buffer layers.

[0025] Beneficial effects: By setting an elastic buffer layer at the contact surface between the support components and the base plate components, the seismic performance and stability of the formwork system are improved. It can effectively absorb the impact vibration during concrete pouring and reduce the air bubble rate on the concrete surface.

[0026] In one alternative embodiment, the surfaces of the tread template unit and the kick template unit are provided with an anti-corrosion coating.

[0027] Beneficial effects: This utility model improves the corrosion resistance of the template by setting an anti-corrosion coating on the surface of the tread template unit and the riser template unit, thereby improving the durability of the template and the quality of concrete forming. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the staircase template of this utility model;

[0030] Figure 2 This is a schematic diagram of the side of the staircase template of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Step assembly; 11. Vent hole; 12. Pouring port; 2. Side plate assembly; 21. Side plate body; 22. Mounting part; 3. Base plate assembly; 4. Support assembly; 41. Horizontal support rod; 42. Longitudinal support rod; 5. Floor slab mold; 51. Floor slab mold joint. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Staircase formwork is a temporary mold used in building construction for pouring concrete stairs. It is typically made of wood or steel and consists of core components such as a base plate, side plates, and treads. During construction, it must be precisely assembled according to the design dimensions to ensure that parameters such as tread height, width, and slope meet the specifications. The formwork must possess sufficient structural strength and overall stability to withstand the static loads during concrete pouring and the dynamic loads during construction. It is removed after the concrete has hardened and set. As a key piece of equipment in the forming of cast-in-place reinforced concrete stairs, the quality of its fabrication and installation directly determines the geometric accuracy, surface flatness, and appearance of the stairs, making it a crucial technical aspect in ensuring the structural safety and functionality of the stairs.

[0038] Traditional staircase formwork construction techniques suffer from significant technical flaws, heavily relying on the skill level of workers and the sophistication of on-site management. The formwork process involves over ten tedious steps, including positioning and layout, erection of support frames, side formwork positioning, step-by-step assembly of formwork, and overall reinforcement and correction. Any dimensional deviation or installation error at any stage can lead to defects in the final product. Current technologies generally employ a piecemeal assembly method, requiring on-site cutting, processing, and temporary assembly of wooden or steel formwork. This not only results in low construction efficiency but also causes severe wear and tear at the joints due to repeated disassembly and reassembly. Manual assembly makes it difficult to precisely control the elevation consistency of individual steps, easily leading to cumulative errors. In extreme cases, this can result in insufficient clearance in the staircase section, posing a risk to final acceptance. These inherent defects force construction companies to invest additional manpower in subsequent treatments such as step leveling and corner repair, significantly increasing quality rectification costs and extending the project duration.

[0039] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0040] According to an embodiment of the present invention, a stair formwork is provided, comprising: a step assembly 1, including tread template units and riser template units, wherein multiple tread template units and multiple riser template units are alternately connected to form the step assembly 1; a side plate assembly 2, disposed opposite to both sides of the step assembly 1; and a bottom plate assembly 3, disposed at the bottom of the step assembly 1; the step assembly 1, the side plate assembly 2, and the bottom plate assembly 3 enclose a casting cavity, the inside of which has a casting space suitable for pouring concrete; the stair formwork further comprises: a floor slab mold joint 51, the floor slab mold joint 51 being adapted to connect with a floor slab mold 5, the floor slab mold 5 including a floor slab forming space, and the casting space being connected to the floor slab forming space.

[0041] The stair formwork provided by this utility model improves construction efficiency by assembling and connecting the step assembly 1, side plate assembly 2, and bottom plate assembly 3. Compared with the existing technology where wooden or steel formwork needs to be temporarily cut and assembled on site, this method improves construction efficiency. The step assembly 1, which uses alternating connection of tread formwork units and riser formwork units, directly fixes the tread formwork units and riser formwork units, and then splices the side plate assembly 2 and bottom plate assembly 3 with the step assembly 1. This simplifies the splicing steps, improves overall consistency, and allows the concrete pouring of the entire staircase to be completed in one go. This avoids the joint defects caused by traditional layered pouring. The floor slab mold joint 51 achieves seamless connection between the staircase and the floor slab mold 5. By connecting the pouring space and the floor slab forming space, the staircase and the adjacent floor slab can be poured and formed simultaneously. This not only eliminates the risk of grout leakage at the joint in the traditional process, but also improves the overall structural integrity.

[0042] In some embodiments, combined with Figure 1 As shown, the pouring cavity includes a pouring port 12, which is adapted to connect with the floor slab forming space. This invention achieves simultaneous one-time pouring of the staircase and floor slab concrete by setting a pouring port 12 on the pouring cavity of the staircase formwork that connects with the floor slab forming space. This improves construction efficiency and structural integrity, avoids the cold joint problem caused by traditional multi-stage pouring, enhances the stability of the joint between the staircase and the floor slab, and prevents quality defects such as grout leakage and misalignment at the joint.

[0043] It is worth noting that the tread template unit and the riser template unit are fixedly connected to form an integral step assembly 1 by angle steel. The three parts of the step assembly 1, the base plate assembly 3 and the side plate assembly 2 are connected to each other to form a stair template. Before the concrete of the floor slab is poured, the floor slab mold 5 and the stair template are connected through the floor slab mold joint 51. Concrete is poured through the pouring port 12 of the floor slab mold 5. After solidification, the floor slab and the stair can be formed as a whole.

[0044] Furthermore, the surfaces of the tread formwork unit and the riser formwork unit are provided with an anti-corrosion coating. This invention improves the corrosion resistance of the formwork by providing an anti-corrosion coating on the surfaces of the tread formwork unit and the riser formwork unit, thereby enhancing the durability of the formwork and the quality of concrete molding.

[0045] In some embodiments, combined with Figure 2 As shown, the tread formwork unit includes vents 11, suitable for venting residual gas in the pouring space during pouring. This invention effectively solves the quality problems caused by gas retention during concrete pouring by providing vents 11 on the tread formwork unit. The vent 11 design allows residual gas in the pouring space to escape smoothly, ensuring that the concrete densely fills every corner. This guarantees efficient venting without causing excessive cement paste loss, thus improving construction convenience.

[0046] Specifically, circular vent holes 11 can be provided in both the riser template unit and the tread template unit.

[0047] In some embodiments, combined with Figure 1 As shown, the support component 4 is composed of horizontal support rods 41 and vertical support rods 42 connected together. At least one horizontal support rod 41 and the vertical support rod 42 together form a truss-type support structure. This invention improves the overall rigidity and stability of the stair formwork system by employing the support component 4 with a truss-type support structure. The spatial truss structure formed by the horizontal support rods 41 and the vertical support rods 42 connected by nodes provides stability assurance for stair construction.

[0048] Specifically, both the transverse support rod 41 and the longitudinal support rod 42 are made of steel pipes. Multiple transverse support rods 41 and longitudinal support rods 42 are usually used for support, and the two are fixed and locked together by buckles.

[0049] In some embodiments, combined with Figure 1 As shown, the base plate assembly 3 is connected to the transverse support rod 41 and the longitudinal support rod 42 respectively. This utility model forms a rigid triangular force-bearing system by directly connecting the base plate assembly 3 to the transverse and longitudinal support rods 42, which evenly transfers the concrete load to the entire support system. The use of standardized connection nodes enables rapid assembly and disassembly, improving construction efficiency.

[0050] Specifically, the base plate assembly 3 and the support assembly 4 are connected by bolts or self-locking clips.

[0051] Furthermore, the contact surfaces of the transverse support rods 41 and longitudinal support rods 42 of the support assembly 4 with the base plate assembly 3 are provided with elastic buffer layers. By providing elastic buffer layers at the contact surfaces of the support assembly 4 and the base plate assembly 3, the seismic performance and stability of the formwork system are improved. This effectively absorbs the impact vibration during concrete pouring and reduces the air bubble rate on the concrete surface.

[0052] In some embodiments, combined with Figure 1 As shown, the side panel assembly 2 includes a side panel body 21 and a mounting part 22. The step assembly 1 and the side panel assembly 2 are detachably connected through the mounting part 22. This invention, through the side panel assembly 2 detachably connected to the step assembly 1, achieves rapid assembly and precise positioning of the stair formwork, improving construction efficiency and forming quality. It shortens the assembly and disassembly time of a single side formwork, improving efficiency compared to traditional fixed connections. The mounting part 22 uses a bolt-positioned connection method, allowing for the individual replacement of damaged side panels without removing the support system, thus improving maintenance efficiency.

[0053] Furthermore, the mounting part 22 is a mounting hole, which is opened on the surface of the side plate body 21. The side plate body 21 and the step assembly 1 are detachably connected by bolts. This utility model, by setting mounting holes on the side plate body 21 and using bolt connection, realizes the rapid assembly, disassembly and positioning of the stair formwork, thus improving construction efficiency.

[0054] It is worth noting that the longitudinal support rod 42 includes a height-adjustable base. This invention achieves precise leveling and rapid adaptation of the stair formwork support system by setting a height-adjustable base at the bottom of the longitudinal support rod 42, improving construction efficiency and quality stability. The adjusting base adopts a threaded sleeve structure to compensate for floor construction errors.

[0055] Specifically, the adjusting base is a threaded sleeve.

[0056] The stair formwork provided by this utility model adopts a modular design. It replaces the on-site cutting of traditional wooden or steel formwork by assembling the step assembly 1, side plate assembly 2, and bottom plate assembly 3, which are alternately and fixedly connected by tread formwork units and riser formwork units, significantly improving construction efficiency. The step assembly 1 uses a factory-prefabricated unitized connection structure, simplifying on-site splicing steps. The integrated design supports one-time casting of the entire staircase, eliminating joint defects from layered casting. The floor slab mold joint 51 achieves precise docking between the staircase and the floor slab mold 5. By connecting the casting spaces of the two, the staircase and adjacent floor slabs can be cast simultaneously. This technology not only solves the problem of grout leakage at joints in traditional processes but also significantly improves the integrity and construction quality of the concrete structure through integral casting.

[0057] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A stair form, characterized by, include: A step assembly (1) includes a tread template unit and a riser template unit, wherein multiple tread template units and multiple riser template units are alternately connected to form the step assembly (1); a side plate assembly (2) is disposed opposite to both sides of the step assembly (1); and a bottom plate assembly (3) is disposed at the bottom of the step assembly (1). The stepped assembly (1), the side plate assembly (2), and the bottom plate assembly (3) enclose a pouring cavity, and the interior of the pouring cavity has a pouring space suitable for pouring concrete. The stair formwork also includes: a floor slab mold joint (51), which is adapted to be connected to the floor slab mold (5). The floor slab mold (5) includes a floor slab forming space, and the pouring space is connected to the floor slab forming space.

2. The stair form of claim 1, wherein, The casting cavity includes a casting port (12), which is adapted to communicate with the floor slab forming space.

3. The stair form of claim 1, wherein, The tread template unit includes a vent (11) suitable for discharging residual gas in the pouring space during pouring.

4. The stair form of claim 1, wherein, Also includes: The support assembly (4) is composed of a horizontal support rod (41) and a longitudinal support rod (42) connected together, and at least one of the horizontal support rod (41) and the longitudinal support rod (42) together constitute a truss support structure.

5. The stair form of claim 4, wherein, The base plate assembly (3) is connected to the transverse support rod (41) and the longitudinal support rod (42) respectively.

6. The stair form of claim 5, wherein, The side panel assembly (2) includes a side panel body (21) and a mounting part (22), and the step assembly (1) is detachably connected to the side panel assembly (2) through the mounting part (22).

7. The stair form of claim 6, wherein, The mounting part (22) is a mounting hole, which is opened on the surface of the side plate body (21). The side plate body (21) and the stepped assembly (1) are detachably connected by bolts.

8. The staircase formwork according to claim 7, characterized in that, The longitudinal support rod (42) includes a height-adjustable base.

9. The stair form of claim 8, wherein, The contact surfaces of the transverse support rod (41) and longitudinal support rod (42) of the support assembly (4) with the base plate assembly (3) are provided with elastic buffer layers.

10. The stair form of claim 7, wherein, The surfaces of the tread template unit and the kick template unit are provided with an anti-corrosion coating.

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