Building stair reinforcing formwork

Abstract

The utility model relates to a building stair reinforcing formwork which comprises a bottom formwork installed on the top of a stair support, side formworks arranged on the two sides of the upper portion of the bottom formwork and step formworks vertically inserted into the reinforcing grooves, and the step formworks are arranged on the two sides of the upper portion of the bottom formwork and provided with vertical reinforcing grooves. The step die comprises a first square timber crossing out of the side dies on the two sides and a flat-vertical face die which is fastened with the first square timber and vertically arranged between the side dies on the two sides, and further comprises a U-shaped buckle which clamps the part, crossing out of the side dies, of the first square timber and is fixedly attached to the side dies. The first square timber crossing out of the side formworks on the two sides and the U-shaped buckles corresponding to the first square timber are used for conducting simple and convenient positioning, the U-shaped buckles and the side formworks are attached and fixed, then the stair formwork can be reinforced and fixed, steel pipes do not need to be matched, and the portability, economical efficiency and firmness of formwork installation are improved.

Description

Technical Field

[0001] The utility model relates to the field of building formwork, in particular to the technical field of building stair reinforcement formwork. Background Art

[0002] In modern building construction, formwork technology is commonly used in the construction of stairs to ensure the accuracy of the staircase structure size and surface flatness. Traditionally, staircase formwork is mainly divided into two categories: wooden formwork and metal (mainly steel or aluminum alloy) formwork.

[0003] At present, wooden staircase formwork is widely used due to its good processing performance, relatively low cost and easy on-site adjustment. However, it has poor durability, is easily deformed by moisture, has a limited number of reuses, and requires steel pipes, which leads to increased maintenance costs and waste of resources.

[0004] Although metal formwork overcomes the defects of wooden formwork, it also has disadvantages such as heavy weight, high initial investment cost, and inconvenient transportation and installation. Especially in the construction environment where manual operation is the main method, it increases the labor intensity of workers and limits the construction efficiency. At the same time, concrete pouring is inconvenient, and uneven vibration is prone to hollowing.

[0005] In this regard, Chinese patent CN209353700U steel-wood composite staircase formwork structure discloses a method of combining wooden side formwork and steel vertical formwork, but there is also a risk of deformation of the wooden side formwork due to the pressure of the steel vertical formwork, and the effect of balancing quality and efficiency cannot be achieved.

[0006] Therefore, the market urgently needs a new stair formwork solution that can inherit the lightweight and economical characteristics of wooden formwork and integrate the durability and high precision of metal formwork. Utility Model Content

[0007] In summary, the utility model aims at the deficiencies of the prior art and proposes a building stair reinforcement formwork, which aims to effectively balance cost and performance, taking into account the lightweight and economical characteristics as well as the firmness and durability of the formwork.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A building stair reinforcement formwork, comprising a bottom formwork installed on the top of a stair support, side forms arranged on both sides of the upper part of the bottom formwork, and the side forms are provided with vertical reinforcement grooves;

[0010] It also includes a step mold vertically inserted into the reinforcement groove, the step mold includes a first square wood that steps out of the side molds on both sides and a flat vertical mold that is fastened to the first square wood and vertically between the side molds on both sides;

[0011] It also includes a U-shaped buckle that holds the part of the first square timber that extends beyond the side form and is fixed in contact with the side form.

[0012] Compared with the prior art, when setting the step form in this case, the first square timber that extends beyond the two side forms and the corresponding U-shaped buckle are used for simple positioning. Fixing the U-shaped buckle in contact with the side form can complete the reinforcement and fixation of the stair formwork, eliminating the need to cooperate with steel pipes, which improves the portability, economy, and firmness of formwork installation.

[0013] In some embodiments, the bottom form is a wooden form with a stainless steel cladding, further enhancing the strength of the bottom form.

[0014] In a preferred embodiment, a release agent layer is provided on the stainless steel cladding of the bottom form to facilitate demolding.

[0015] In some embodiments, the side form includes a second square timber placed on top of the bottom form and a wooden side plate fastened to the second square timber, and the reinforcement groove is provided on the side plate.

[0016] In some embodiments, the side form is provided with fasteners that penetrate from the second square timber to the side of the side plate.

[0017] In a preferred embodiment, the bottom form is at least one second square timber width wider than the designed size.

[0018] In a preferred embodiment, stainless steel corner guards are provided at the four corners of the flat and vertical form that face away from the first square timber to further enhance the strength of the flat and vertical form.

[0019] In a preferred embodiment, the step form is provided with fasteners that penetrate from the first square timber to the side of the flat and vertical form. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an overall schematic diagram of a building stair reinforcement form in this case;

[0021] Figure 2 is a schematic diagram of a building stair cast from a building stair reinforcement form in this case;

[0022] Figure 3 is a schematic diagram of the bottom form structure;

[0023] Figure 4 is a schematic diagram of the side form structure;

[0024] Figure 5 is a schematic diagram of the step form structure;

[0025] Figure 6 is a side view of the step form;

[0026] Figure 7 is a schematic diagram of the U-shaped buckle;

[0027] Figure 8 It is a schematic diagram of the installation position of the U-shaped buckle;

[0028] Figure 9 It is a schematic diagram of the installation of the U-shaped buckle and the tread die. Specific implementation manner

[0029] The features of the present utility model and other related features are further described in detail through the following embodiments for the understanding of those skilled in the same industry:

[0030] Please refer to Figure 1 and Figure 2 , a building staircase reinforcement formwork in this case includes a bottom form 100 installed on the top of the staircase support. The staircase support is a conventional technical means in building staircase construction and will not be described in detail in this embodiment. In this embodiment, the bottom form 100 is made of a wooden form with a thickness of 20 mm. Please refer to Figure 3 in combination, and a stainless steel cladding 110 is provided on it to further enhance its strength. Further, a release agent layer is provided on the stainless steel cladding 110 to facilitate demolding and improve the flatness of the concrete surface of the staircase bottom plate. The release agent layer can be formed by brushing a release agent on the surface.

[0031] Please continue to refer to Figure 1 , side forms 200 are provided on both sides of the upper part of the bottom form 100, and the side forms 200 are provided with vertical reinforcement grooves 201. For the preferred scheme of the side forms 200, please refer to Figure 4 in combination. The side form 200 includes a second square timber 210 placed on the upper part of the bottom form 100 and a wooden side plate 220 fastened to the second square timber 210. At this time, the above-mentioned reinforcement groove 201 is provided on the side plate 220. In this embodiment, the second square timber 210 has a size of 40*100 mm, 40 mm is its thickness, and 100 mm is its height after being placed on the bottom plate 100, while the side plate 220 is made of a bamboo plywood with a thickness of 20 mm. Specifically, the second square timber 210 is on the outer sides of both sides of the bottom form 100, and the side plate 220 is on the inner side. The fastening method is preferably a fastener 202 penetrating from the side of the second square timber 210 to the side of the side plate 220. The fastener 202 can be a steel nail, and the fastener 202 will also be used in the subsequent description. Here, the fastener 202 can be understood as a general accessory. For the convenience of understanding, the fastener 202 is represented by a diagram, and this fastener 202 should not be regarded as a limited accessory here.

[0032] Because of the existence of the second square timber 210, the stability of the side form 200 on the bottom form 100 can be greatly improved. Therefore, when designing the bottom form 100, its width should be at least one second square timber 210 width larger than the single-side width dimension. In this actual example, the bottom form 100 has a design width that is 100 mm larger.

[0033] Please continue to refer toFigure 1 , a formwork for strengthening a building staircase in this case further includes a tread form 300 vertically inserted into the reinforcement groove 201. Please refer to Figure 5 , the tread form 300 includes a first square timber 310 straddling the side forms on both sides and a flat vertical form 320 fixedly connected to the first square timber 310 and vertically between the side forms on both sides. At this time, the width d of the flat vertical form 320 is the width of the staircase. In this embodiment, the first square timber 310 has a size of 40*100mm, 40mm is its thickness, 100mm is the height in the direction of inserting into the reinforcement groove 201, and the flat vertical form 320 is made of a bamboo plywood with a thickness of 20mm.

[0034] Please refer to Figure 6 , in a preferred embodiment, stainless steel corner guards 321 are provided at the four corners of the flat vertical form 320 facing away from the first square timber 310 to further strengthen the strength of the flat vertical form. The fastening method is preferably a fastener 202 penetrating from the side of the first square timber 310 to the side of the flat vertical form 320. The fastener 202 has been described in detail above and will not be elaborated here.

[0035] Please continue to refer to Figure 1 , a formwork for strengthening a building staircase in this case further includes a U-shaped buckle 400 that clamps the part of the first square timber 310 straddling the side form 200 and is fixedly attached to the side form 200. Please refer to Figures 7 to 9 , that is, the U-shaped buckle 400 is provided on the outer sides of both sides of the side form 200. Since the first square timber 310 is inserted into the reinforcement groove 201 of the side plate 220, the U-shaped buckle 400 is attached to the side plate 220 at this time. Specifically, the fitting method of the side plate 220 and the U-shaped buckle 400 can be screw fixation, and a plurality of screw holes are provided on the two legs of the U-shaped buckle 400, or other methods, which are not specifically limited here.

[0036] At this time, the second square timber 210 will be at the lower part of the outer side of the side form 200. For the convenience of installation and operation, preferably, the length of the first square timber 310 will be wider than that of the flat vertical form 320. In this case, the first square timber 310 is 100-150mm longer than the flat vertical form 320.

[0037] In this way, when setting the tread form 300, the first square timber 310 straddling the side forms 200 on both sides and the corresponding U-shaped buckle 400 are used for simple positioning, and the U-shaped buckle 400 is fixedly attached to the side form 200 to complete the reinforcement and fixation of the staircase formwork, without the need to cooperate with steel pipes, improving the portability, economy and firmness of formwork installation.

[0038] The installation sequence of a formwork for strengthening a building staircase in this case is described as follows. First, install the bottom formwork 100 on the top of the staircase support, and adjust the angle of the bottom formwork 100 to meet the design requirements. The width of the bottom formwork 100 exceeds the design size by 10 cm. Secondly, install the side formwork 200 of the staircase. Place the side formwork 200 on the upper part of the bottom formwork 100, use the bottom formwork 100 to support the side formwork 200, and fix the second wooden square 210 of the side formwork 200 to the bottom formwork 100. Then install the staircase steel bars. Finally, install the step formwork 300. Vertically insert the step formwork 300 into the reinforcement groove 201 of the side formwork 200, and use U-shaped fasteners 400 to fasten the two ends of the first wooden square 310 to be in contact with the side formwork 200 for fixation. Finally, pour concrete, finish the surface, form, cure, and remove the formwork.

[0039] As described above, what is protected in this case is a formwork for strengthening a building staircase. All technical solutions identical or similar to this case should be regarded as falling within the protection scope of this case.

Claims

1. A building stair reinforcement formwork, characterized in that: It comprises a bottom mold (100) installed on the top of a stair support, side molds (200) arranged on both sides of the upper part of the bottom mold (100), and the side molds (200) are provided with vertical reinforcement grooves (201); It also includes a step mold (300) vertically inserted into the reinforcement groove (201), the step mold (300) includes a first square wood (310) extending beyond the side molds (200) on both sides, and a flat surface mold (320) fastened to the first square wood (310) and vertically disposed between the side molds (200) on both sides; It also includes a U-shaped buckle (400) that fixes the portion of the first square wood (310) of the clamping column beyond the side mold (200) and is fixed to the side mold (200).

2. A building stair reinforcement formwork as claimed in claim 1, characterized in that: The bottom mold (100) is a wooden mold plate with a stainless steel cladding (110).

3. A building stair reinforcement formwork as claimed in claim 2, characterized in that: The stainless steel cladding surface (110) of the bottom mold (100) is provided with a mold release agent layer.

4. A building stair reinforcement formwork as claimed in claim 1, characterized in that: The side mold (200) comprises a second square wood (210) placed on the upper part of the bottom mold (100) and a wooden side panel (220) fastened to the second square wood (210), and the reinforcement groove (201) is arranged on the side panel (220).

5. A building stair reinforcement formwork as claimed in claim 4, characterized in that: The side mold (200) is provided with a fastener (202) penetrating from the second square wood (210) side to the side of the side plate (220).

6. A building stair reinforcement formwork as claimed in claim 4, characterized in that: The bottom mold (100) is at least wider than the designed size by a width of the second square wood (210).

7. A building stair reinforcement formwork as claimed in claim 1, characterized in that: The four corners of the planar surface mold (320) facing away from the first square wood (310) are provided with stainless steel corner wraps (321).

8. The building stair reinforcement formwork according to claim 1, characterized in that: The step mold (300) is provided with a fastener (202) which is arranged to penetrate from the first square wood (310) side to the flat vertical surface mold (320) side.

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