Ribbed floor formwork

Abstract

The utility model relates to the technical field of building formworks, in particular to a ribbed floor formwork which comprises a formwork top face and formwork side faces, the lower edges of the formwork side faces extend to form flange edges, and the end faces of the outer edges of the flange edges form binding faces. According to the utility model, the two mold shells can be tightened by penetrating the fastening pieces through the connecting holes, so that the tight connection between the two mold shells is ensured, and the mold shells are not prone to falling off, so that the service life of the mold shells is prolonged, and the service life of the mold shells is prolonged. The positioning groove is formed in the bottom face of the formwork flange edge and can be matched with a positioning block on a formwork supporting piece in the installation process, the positioning function is achieved, the formwork is prevented from moving in the horizontal direction, meanwhile, no up-down penetrating hole exists in the scheme, leakage of grout in the grouting process is avoided, no hole exists in the face, making contact with concrete, of the formwork, and no hole exists in the face, making contact with the concrete, of the formwork in the demolding process. The bottom surface of the ribbed floor is flat and attractive and does not need additional filling.

Description

Technical Field

[0001] The utility model relates to the technical field of building formwork, and particularly relates to a ribbed floor formwork shell. Background Art

[0002] The ribbed floor formwork shell is a formwork used in building engineering, mainly used for the construction of cast-in-place concrete two-way ribbed floor slabs (floor slabs), and is suitable for the construction of large-span and large-load spaces, such as underground garages, large shopping malls, multi-story factories, teaching buildings, civil air defense projects, etc.

[0003] In the prior art, through holes are provided on both the top support and the formwork shell, and they are fixedly connected by bolts. During the assembly process of the formwork shell, it is necessary for someone to twist the bolts above and below the formwork shell at the same time, which is very inconvenient. The workload is increased during the formwork shell assembly and demoulding. In addition, due to the existence of the through holes, when grouting, the concrete slurry is likely to flow down from the gap between the bolts and the through holes. Moreover, since the bolts are higher than the upper surface of the formwork flange edge, when demoulding, the surface of the ribbed floor is uneven and requires secondary treatment, increasing the workload. Content of the Utility Model

[0004] The problem solved by the utility model is that in the prior art, the connection between the top support and the formwork shell by bolts has disadvantages such as inconvenient installation, slurry leakage, and pits left, and a ribbed floor formwork shell is provided.

[0005] The utility model is realized through the following technical solutions. A ribbed floor formwork shell includes a formwork shell top surface. A formwork shell side surface extending downward is connected to the periphery of the formwork shell top surface. A cavity is formed inside the formwork shell top surface and the enclosing formwork shell side surface. The lower edge of the formwork shell side surface continues to horizontally extend outward to form a flange edge. The outer contour of the flange edge in a circle is rectangular. The vertical end surface of the outer edge of the flange edge forms a joint surface for the formwork shells to abut against each other.

[0006] Two or three or four adjacent joint surfaces in the joint surface are provided with connection holes. The number of connection holes on a single joint surface is one or more. The connection holes are horizontally arranged and penetrate from the cavity to the joint surface, and are perpendicular to the joint surface.

[0007] A positioning groove is provided on the lower bottom surface of the flange edge. The positioning groove is close to the corner position of the flange edge. The positioning groove is perpendicular to the lower bottom surface of the flange edge.

[0008] Further, when the number of connection holes on a single joint surface is one, the connection hole is located at the middle position of the joint surface where it is located. When the number of connection holes on a single joint surface is multiple, the connection holes are symmetrically arranged along the length direction of the joint surface where they are located.

[0009] Further, the height distances from all the connection holes to the lower bottom surface of the flange edge are all the same.

[0010] Further, the number of the positioning grooves is one or more.

[0011] Further, the distances from the positioning groove to the two closest fitting surfaces are equal.

[0012] Further, a chamfer for guiding is provided at the opening of the positioning groove.

[0013] Further, a chamfer for guiding is provided at the opening of the connecting hole on the fitting surface.

[0014] Further, the formwork is divided into corner formworks, edge formworks, and center formworks according to the installation position;

[0015] Connecting holes are provided on two adjacent fitting surfaces of the corner formwork;

[0016] Connecting holes are provided on three adjacent fitting surfaces of the edge formwork;

[0017] Connecting holes are provided on all four fitting surfaces of the center formwork.

[0018] Further, when the flange edge is square, the number of connecting holes on the fitting surface where the connecting holes are located is the same. When the flange edge is rectangular, the number of connecting holes on the longer fitting surface where the connecting holes are located and the number of connecting holes on the shorter fitting surface where the connecting holes are located are the same or different.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. Two formworks of the present utility model can be tightened by passing fasteners through the connecting holes to ensure a tight connection between the two formworks and prevent slurry leakage.

[0021] 2. A positioning groove is provided on the bottom surface of the flange edge of the formwork. During installation, it can be fitted with the positioning block on the formwork support to achieve the positioning function, avoid the formwork from moving horizontally. At the same time, there is no upper and lower perforation in this solution, which avoids the dripping of slurry during grouting. And when demoulding, the bottom surface of the ribbed floor slab is flat and beautiful, without the need for additional filling.

[0022] 3. The formwork of the present utility model is divided into corner formworks, edge formworks, and center formworks. When arrayed and spliced, there are no connecting holes on the outer fitting surfaces of the formwork assembly, so no concrete will pour into the through holes, preventing slurry leakage. And when demoulding, the main beam will be smoother and more beautiful. Description of the Drawings

[0023] Figure 1 It is a top-down three-dimensional view of the formwork in the first embodiment;

[0024] Figure 2 It is a bottom-up three-dimensional view of the formwork in the first embodiment;

[0025] Figure 3 An upward view of the formwork in Embodiment 1;

[0026] Figure 4 is Figure 3 the sectional view taken along A-A in

[0027] Figure 5 An upward three-dimensional view of Embodiment 2;

[0028] Figure 6 An upward three-dimensional view of Embodiment 3;

[0029] Figure 7 An upward three-dimensional view of Embodiment 4;

[0030] Figure 8 A structural schematic diagram of the corner formwork, side formwork, and central module.

[0031] In the figure: 1 top surface of the formwork; 2 side surface of the formwork; 3 cavity; 4 flange edge; 5 fitting surface; 6 connection hole; 7 positioning groove; 100 corner formwork; 200 side formwork; 300 central formwork. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0033] Embodiment 1, as Figures 1-4As shown in the figure, a ribbed floor formwork includes a formwork top surface 1. A formwork side surface 2 extending downward is connected to the periphery of the formwork top surface 1. A cavity 3 is formed inside the formwork top surface 1 and the enclosing formwork side surface 2. The lower edge of the formwork side surface 2 continues to extend horizontally outward to form a flange 4. The outer contour of the circle of flanges 4 is rectangular. The vertical end surface of the outer edge of the flange 4 forms a joint surface 5 for the formworks to abut against each other. The joint surfaces 5 of two formworks can be completely in close contact without gaps. Four adjacent joint surfaces 5 in the joint surface 5 are provided with connection holes 6. The number of connection holes 6 on a single joint surface 5 is three. The connection holes 6 are horizontally arranged and penetrate from the cavity 3 to the joint surface 5 and are perpendicular to the joint surface 5. The connection holes 6 are symmetrically arranged along the length direction of the joint surface 5 where they are located. The height distances from all the connection holes 6 to the bottom surface of the flange 4 are the same, ensuring that when two formworks are spliced, the upper and lower bottom surfaces of the formworks can be coplanar after the connection holes 6 are aligned. Four positioning grooves 7 are provided on the bottom surface of the flange 4. The positioning grooves 7 are circular. The positioning grooves 7 are located near the corners of the flange 4 and are perpendicular to the bottom surface of the flange 4. The distances from the positioning grooves 7 to the two closest joint surfaces 5 are equal, which makes the installation more convenient. A chamfer for guiding is provided at the opening of the positioning groove 7, which facilitates the insertion of the corresponding positioning block for positioning. A chamfer for guiding is provided at the opening of the connection hole 6 on the joint surface 5, facilitating the insertion of the through fastener.

[0034] In this solution, two formworks can be tightened by passing fasteners through the connection holes 6 to ensure a tight connection between the two formworks without leakage of grout. And a positioning groove is provided on the bottom surface of the formwork flange 4, which can be fitted with the positioning block on the formwork support during installation to achieve the positioning function and prevent the formwork from moving horizontally. At the same time, there are no upper and lower through holes in this solution, avoiding the dripping of grout during grouting. And when demolding, the bottom surface of the ribbed floor is flat and beautiful without additional filling.

[0035] Embodiment 2, as Figure 5 shown, the difference from Embodiment 1 is that the number of connection holes 6 on a single joint surface 5 is four, and the four connection holes 6 are symmetrically arranged along the length direction of the joint surface 5 where they are located. In other embodiments, the number of connection holes 6 can be one, two, five or more, as long as the tension between the two formworks is satisfied.

[0036] Embodiment 3, as Figure 6As shown in the figure, the difference from the first embodiment is that the number of positioning grooves 7 is two, and they are respectively located at two diagonal positions of the flange edge 4. Since the membrane housings are connected by fasteners, the number of positioning grooves 7 on the bottom surface of the membrane housing can be appropriately reduced, and the function of preventing displacement can still be achieved. And in this solution, the cross-sectional shape of the positioning groove 7 is square, and the corresponding positioning block for supporting the membrane housing can be set to be square. In other embodiments, the number of positioning grooves 7 ranges from one to four, or even more positioning grooves 7 are provided, including two or more positioning grooves 7 provided at a single corner on the bottom surface of the membrane housing, all of which can play a positioning role. And the shape of the positioning groove 7 is not limited to circular and square, and regular shapes such as triangular and diamond-shaped are also acceptable.

[0037] Embodiment 4, as Figure 7 shown in the figure, the difference from the first embodiment is that the flange edge 4 is rectangular in shape, and three connecting holes 6 are provided on the longer fitting surface 5, and two connecting holes 6 are provided on the shorter fitting surface 5. The number of connecting holes 6 on the fitting surface 5 is set according to requirements. Generally speaking, the longer the length of the fitting surface 5, the more connecting holes 6 are required.

[0038] Embodiment 5, as Figure 8 shown in the figure, the formwork housings are divided into corner formwork housings 100, side formwork housings 200, and center formwork housings 300 according to the installation position; connecting holes 6 are provided on two adjacent fitting surfaces 5 of the corner formwork housing 100; connecting holes 6 are provided on three adjacent fitting surfaces 5 of the side formwork housing 200; connecting holes 6 are provided on all four fitting surfaces 5 of the center formwork housing 300. In this way, when multiple corner formwork housings, side formwork housings, and center formwork housings are assembled in an array, there are no connecting holes 6 on the peripheral fitting surfaces 5 of the formwork housing assembly. Therefore, no concrete will pour into the through holes, and no slurry leakage will occur. And when demolding, the main beam will be smoother and more beautiful, and no secondary processing is required.

[0039] In summary, a ribbed floor formwork housing of the present utility model can achieve prefabricated construction, is convenient for installation, there are no connecting holes 6 on the periphery of the formwork housing to cause slurry leakage, and after demolding, the surface of the building body is smooth and beautiful, reducing labor costs.

[0040] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the above embodiments are only for explaining the technical concept and characteristics of the present utility model, and their purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it. It should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A ribbed floor formwork, characterized in that: The mold shell comprises a top surface (1), the top surface (1) is connected to a mold shell side surface (2) extending downwards in a circle, the top surface (1) and the mold shell side surface (2) enclosed therewith form a cavity (3), the lower edge of the mold shell side surface (2) continues to extend outward horizontally to form a flange edge (4), the outer contour of a circle of the flange edge (4) is a rectangle, and the vertical end surface of the outer edge of the flange edge (4) forms a fitting surface (5) for mutually abutting the mold shells; Two, three or four adjacent bonding surfaces (5) among the bonding surfaces (5) are provided with connection holes (6), the number of the connection holes (6) on a single bonding surface (5) is one or more, and the connection holes (6) are horizontally arranged to pass through the cavity (3) to the bonding surface (5), and are perpendicular to the bonding surface (5); The lower bottom surface of the flange edge (4) is provided with a positioning groove (7), the positioning groove (7) is close to the corner position of the flange edge (4), and the positioning groove (7) is perpendicular to the lower bottom surface of the flange edge (4).

2. The ribbed floor formwork according to claim 1, characterized in that: When there is one connection hole (6) on a single bonding surface (5), the connection hole (6) is located in the middle of the bonding surface (5); when there are multiple connection holes (6) on a single bonding surface (5), the connection holes (6) are symmetrically arranged along the length direction of the bonding surface (5).

3. The ribbed floor formwork according to claim 1, characterized in that: The height distances from all the connection holes (6) to the lower bottom surface of the flange edge (4) are consistent.

4. The ribbed floor formwork according to claim 1, characterized in that: The number of the positioning grooves (7) is one or more.

5. The ribbed floor formwork according to claim 1, characterized in that: The distances between the positioning groove (7) and the two closest fitting surfaces (5) are equal.

6. The ribbed floor formwork according to claim 1, characterized in that: The opening of the positioning groove (7) is provided with a chamfer for guiding.

7. The ribbed floor formwork according to claim 1, characterized in that: The connection hole (6) is provided with a chamfer for guiding at the opening of the fitting surface (5).

8. The ribbed floor formwork according to claim 1, characterized in that: The mold shell is divided into a corner mold shell (100), a side mold shell (200), and a center mold shell (300) according to the installation position; Two adjacent fitting surfaces (5) of the corner mold shell (100) are provided with connecting holes (6); The three adjacent fitting surfaces (5) of the side mold shell (200) are provided with connecting holes (6); The four fitting surfaces (5) of the central mold shell (300) are all provided with connection holes (6).

9. The ribbed floor formwork according to claim 1, characterized in that: When the flange edge (4) is square in shape, the number of connection holes (6) on the fitting surface (5) where the connection holes (6) are located is the same; when the flange edge (4) is rectangular in shape, the number of connection holes (6) on the longer fitting surface (5) where the connection holes (6) are located is the same as or different from the number of connection holes (6) on the shorter fitting surface (5) where the connection holes (6) are located.

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