Ribbed floor formwork supporting jacking and supporting structure

Abstract

The utility model relates to the technical field of building formworks, in particular to a ribbed floor formwork supporting jacking and a supporting structure, the jacking comprises a horizontal top plate, one or more positioning protruding blocks are arranged on the upper surface of the top plate, a telescopic rod is connected to the lower surface of the top plate, the supporting structure comprises a plurality of formworks and a jacking, the formworks form a rectangular array, and the jacking is connected with the formwork. The adjacent mold shells are connected through fasteners, a top support is arranged below the co-angular position of each group of adjacent four mold shells, a top plate abuts against the lower bottom faces of the four mold shells, and a positioning protruding block arranged on the top plate is inserted into a positioning groove in one or more mold shells. The formwork is prevented from moving in the horizontal direction, bolt connection is not needed, the installation workload is small, the flange edge of the formwork is not provided with a vertical hole, slurry leakage is avoided, and the ribbed floor slab is smoother and more attractive after demolding.

Description

Technical Field

[0001] The utility model relates to the technical field of building formwork, in particular to a formwork support jack and a support structure for a ribbed floor slab formwork. Background Art

[0002] The Miller floor slab formwork is a formwork used in construction projects, mainly 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 jack and the formwork, and they are fixedly connected by bolts. During the assembly process of the formwork, it is necessary for someone to twist the bolts above and below the formwork at the same time, which is very inconvenient. The workload is increased during both the formwork assembly and demoulding. In addition, due to the existence of the through holes, during grouting, the concrete slurry easily flows down from the gap between the bolt and the through hole. In addition, since the bolt is higher than the upper surface of the formwork flange, when demoulding, the lower surface of the ribbed floor slab is uneven and requires secondary treatment, increasing the workload. Therefore, there is an urgent need for a more convenient jack structure for installation. Summary of the Utility Model

[0004] The problem solved by the utility model is that in the prior art, the connection between the jack and the formwork by bolts has disadvantages such as inconvenient installation, slurry leakage, and uneven lower surface of the ribbed floor slab. The utility model provides a formwork support jack for a ribbed floor slab and a formwork assembly.

[0005] The utility model is realized through the following technical solutions. A formwork support jack for a ribbed floor slab includes a horizontal top plate. One or more positioning convex blocks are arranged on the upper surface of the top plate, and the positioning convex blocks are perpendicular to the upper surface of the top plate. A telescopic rod is connected to the lower surface of the top plate, and the telescopic rod is perpendicular to the lower surface of the top plate.

[0006] Further, when the number of the positioning convex blocks is one, the positioning convex block is arranged at a non-central position of the top plate.

[0007] Further, when the number of the positioning convex blocks is four, the central axis of the telescopic rod, the central positions of the four positioning convex blocks, and the central position of the top plate coincide.

[0008] Further, the four positioning convex blocks are arranged in a square.

[0009] Further, a chamfer for guiding is arranged at the upper end of the positioning convex block.

[0010] Further, the telescopic rod includes a lead screw and an adjusting nut. The top of the lead screw is fixed to the top plate, and the adjusting nut is sleeved on the lead screw. Rotating the adjusting nut can adjust the height of the jack.

[0011] Another aspect of the present utility model provides a ribbed floor support structure, which includes a plurality of formwork shells and the above-mentioned adjustable supports. The formwork shell includes a horizontal top surface of the formwork shell, and a formwork shell side extending downward is connected around the perimeter of the top surface of the formwork shell. A cavity is formed inside the top surface of the formwork shell and the formwork shell side enclosing it. The lower edge of the formwork shell side continues to extend horizontally 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 fitting surface for the formwork shells to abut against each other. The fitting surface is provided with connection holes, and the lower bottom surface of the flange edge is provided with positioning grooves.

[0012] The fitting surfaces of multiple formwork shells are abutted against each other in pairs to form a rectangular array. The connection holes of adjacent two formwork shells are fastened and connected through fasteners. The lower bottom surfaces of all formwork shells are coplanar. A support is provided below the common corner position of every four adjacent formwork shells in each group. The upper surface of the top plate of each support abuts against the lower bottom surfaces of the four formwork shells. The positioning protrusions provided on the top plate are inserted into the positioning grooves in one or more formwork shells.

[0013] Furthermore, it also includes vertical poles. The telescopic rod is installed at the top of the vertical pole. The vertical pole is provided with annular connection discs that can be buckled. One or more crossbars are buckled between every two adjacent vertical poles.

[0014] Furthermore, a bottom support capable of lifting and adjusting can be provided at the bottom of the vertical pole.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. The ribbed floor support structure can support the common corner of four formwork shells. Moreover, the flange edges of the formwork shells are not provided with upper and lower perforations, which avoids slurry leakage and also avoids pits left on the lower surface of the floor after demoulding when bolt-connected, eliminating the need for additional filling work. The vertical poles are connected by crossbars, improving the stability of the vertical poles, and the connection is of the socket and spigot type, making the installation very convenient.

[0017] 2. The formwork shell and the support of the present utility model are respectively provided with positioning grooves and positioning protrusions, which can achieve the rapid positioning of the formwork shell, avoid the formwork shell from moving horizontally, and do not require bolt connection, reducing the installation workload. The flange edges of the formwork shells have no vertical openings, preventing slurry leakage, and the ribbed floor is smoother and more beautiful after demoulding. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the support in Embodiment 1;

[0019] Figure 2 It is a schematic structural diagram of the support in Embodiment 2;

[0020] Figure 3 It is a schematic structural diagram of the support structure in Embodiment 3;

[0021] Figure 4 Schematic diagram of the support structure in Embodiment 4;

[0022] Figure 5 Top-down three-dimensional schematic diagram of the formwork.

[0023] Figure 6 Bottom-up three-dimensional schematic diagram of the formwork.

[0024] In the figure: 1 Top plate; 2 Positioning bump; 3 Telescopic rod; 301 Lead screw; 302 Adjusting nut; 4 Vertical rod; 5 Connecting plate; 6 Cross bar;

[0025] 11 Top surface of the formwork; 12 Side surface of the formwork; 13 Cavity; 14 Flange edge; 15 Positioning groove. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment 1, as Figure 1 shown, a formwork support jack for a ribbed floor slab includes a horizontal top plate. The top plate is flat and can be of any shape, generally square or circular for easy fabrication. Four positioning bumps are provided on the upper surface of the top plate. The shape of the positioning bumps is not limited and can be cylindrical or square, with the cylindrical shape being more common. A chamfer for guiding is provided at the upper end of the positioning bump, which can facilitate the insertion of the positioning bump into the positioning groove of the formwork. The central axis of the telescopic rod, the central positions of the four positioning bumps, and the central position of the top plate coincide. Generally, the distance from the positioning groove on the formwork to the flange edge is fixed. After four formworks are spliced, the four positioning grooves on the formwork will necessarily form a rectangle. Therefore, the corresponding positioning bumps should also be rectangular. And the coincidence of the central axis of the telescopic rod, the central positions of the four positioning bumps, and the central position of the top plate can ensure that the four formworks divide the top plate into four equal parts, ensuring that each formwork is evenly stressed. In this solution, the four positioning bumps are arranged in a square. When the distances from the positioning groove on the formwork to the two sides of the flange edge are the same, after four formworks are spliced, the four positioning grooves on the formwork will necessarily form a square. Therefore, the corresponding positioning bumps should also be square. The telescopic rod includes a lead screw and an adjusting nut. The top of the lead screw is fixed to the top plate, and the adjusting nut is sleeved on the lead screw. Rotating the adjusting nut can adjust the height of the jack.

[0028] In this solution, the number of positioning bumps is four. The positioning bumps are perpendicular to the upper surface of the top plate. An expansion rod is connected to the lower surface of the top plate, and the expansion rod is perpendicular to the lower surface of the top plate. In this solution, the height of the top support can be adjusted by rotating the adjusting nut. Moreover, the positioning bumps are fixed on the top plate without the need for additional installation work. The positioning bumps provided on the top plate can be inserted into the positioning grooves of the formwork to position the formwork. Additionally, through holes do not need to be opened on the flange edge of the formwork, so that when grouting, the slurry will not leak from the through holes.

[0029] Embodiment 2, as Figure 2 shown, the difference from Embodiment 1 is that the number of the positioning bumps is one, and the positioning bump is cylindrical. The positioning bump is arranged at a non - central position on the top plate. Because the positioning bump needs to be inserted into the positioning groove in the formwork, if the positioning bump is at the central position of the top plate, then the four formworks cannot equally divide the top plate, resulting in some formworks having a large bearing area and some having a small bearing area. Therefore, arranging the positioning bump at a non - central position on the top plate can achieve the equal division of the top plate by the four formworks.

[0030] Another aspect of the present invention provides a ribbed floor support structure.

[0031] Embodiment 3, as Figure 3 shown, includes a plurality of formworks and a plurality of top supports. The formwork includes a horizontal formwork top surface. A formwork side surface extending downward is connected to the periphery of the formwork top surface. A cavity is formed inside the formwork top surface and the enclosing formwork side surface. The lower edge of the formwork side surface continues to extend horizontally 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 fitting surface for the formworks to abut against each other. Connection holes are provided on the fitting surface. A positioning groove is provided on the lower bottom surface of the flange edge. The fitting surfaces of the plurality of formworks are abutted against each other in pairs to form a rectangular array. The connection holes of adjacent two formworks are penetrated and fastened by fasteners. The lower bottom surfaces of all formworks are coplanar. A top support is provided below the common corner position of each group of adjacent four formworks. The upper surface of the top plate of each top support abuts against the lower bottom surfaces of the four formworks. The positioning bumps provided on the top plate are inserted into the positioning grooves in one or more formworks. It also includes a vertical rod. The expansion rod is installed at the top of the vertical rod. A circular connecting disc that can be buckled is provided on the vertical rod. One or more cross bars are buckled between each pair of adjacent two vertical rods. Adding cross bars can improve the stability of the vertical rods, and through the button - type connection, the installation of the cross bars is very convenient and fast.

[0032] As Figure 4As shown in the figure, there are nine formwork shells arranged in a 3×3 pattern. The formwork shells are connected through the through-connection holes of the fasteners between each other. There are a total of four positions where four formwork shells share a common corner among the nine formwork shells. Therefore, four adjustable supports are provided. Each adjustable support is provided with four positioning bumps, and the four positioning bumps are respectively inserted into the positioning grooves of the four formwork shells to position each formwork shell. The outermost corners of the formwork shells can be erected on the side formwork of the main beam. Therefore, adjustable supports are not provided at positions where four formwork shells do not share a common corner. The height is adjusted by a telescopic rod below the adjustable support. A vertical rod is connected below the telescopic rod. A plurality of cross bars are buckled between each pair of adjacent vertical rods to improve the stability of the vertical rod. The cross bars are connected by a disc buckle type, and the installation is very convenient and fast. In actual application, the number of formwork shells and adjustable supports is more. The 3×3 in this solution is only for demonstration purposes. In this solution, the ribbed floor support structure can support the common corner of four formwork shells, and quickly position the formwork shells, avoiding the horizontal movement of the formwork shells. Moreover, the flange edges of the formwork shells are not provided with upper and lower perforations, avoiding slurry leakage and avoiding pits left on the lower surface of the floor after demoulding during bolt connection, without additional filling work. The vertical columns are connected by cross bars to improve the stability of the vertical rods, and the disc buckle type connection is very convenient for installation.

[0033] Embodiment 4, as Figure 4 shown, the difference from Embodiment 3 is that the number of l positioning bumps on each top plate is one, and the positioning bump can be arbitrarily inserted into one of the positioning grooves of the four formwork shells sharing a common corner. Since the adjacent formwork shells are tightly connected through the through-connection holes of the fasteners to form a whole, positioning one formwork shell through one positioning bump will also limit the horizontal movement of other formwork shells. Compared with Embodiment 3, the number of positioning bumps and positioning grooves is reduced, and the installation is more convenient.

[0034] In other embodiments, the bottom of the vertical rod can be provided with a bottom support capable of lifting and adjusting. When the ground hardening degree is not enough, a bottom support can be added at the bottom of the vertical rod to adjust the stability of the vertical rod.

[0035] In summary, the ribbed floor formwork support adjustable support and formwork assembly of the present invention can realize assembled construction, and the formwork assembly can realize hoisting operation. It also reduces the number of formwork holes and improves the flatness of the ribbed floor slab.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments are only for explaining the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it, and cannot limit the protection scope of the present invention with this. All equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A ribbed floor formwork support, characterized in that: The invention comprises a horizontal top plate (1), wherein the upper surface of the top plate (1) is provided with one or more positioning protrusions (2), wherein the positioning protrusions (2) are perpendicular to the upper surface of the top plate (1), and the lower surface of the top plate (1) is connected with a telescopic rod (3), wherein the telescopic rod (3) is perpendicular to the lower surface of the top plate (1).

2. A ribbed floor formwork support jacking bracket according to claim 1, characterized in that: When the number of the positioning protrusion (2) is one, the positioning protrusion (2) is arranged at a non-central position of the top plate (1).

3. The ribbed floor formwork support jacking bracket according to claim 1, characterized in that: When the number of the positioning protrusions (2) is four, the central axis of the telescopic rod (3), the central positions of the four positioning protrusions (2), and the central position of the top plate (1) coincide with each other.

4. The ribbed floor formwork support jacking bracket according to claim 3, characterized in that: The four positioning protrusions (2) are arranged in a square.

5. The ribbed floor formwork support jacking bracket according to claim 1, characterized in that: The upper end of the positioning protrusion (2) is provided with a chamfer for guiding.

6. The ribbed floor formwork support jacking bracket according to claim 1, characterized in that: The telescopic rod (3) comprises a lead screw (301) and an adjusting nut (302); the top of the lead screw (301) is fixed to the top plate (1); the adjusting nut (302) is sleeved on the lead screw (301); and the height of the top support can be adjusted by rotating the adjusting nut (302).

7. A ribbed floor support structure, comprising a plurality of formworks and the jacking according to any one of claims 1 to 6, characterized in that: The mold shell comprises a horizontal mold shell top surface (11), and a mold shell side surface (12) extending downward is connected to the mold shell top surface (11) in a circle around it, and a cavity (13) is formed inside the mold shell top surface (11) and the mold shell side surface (12) enclosed therewith, and the lower edge of the mold shell side surface (12) continues to extend horizontally outward to form a flange edge (14), and the outer contour of a circle of the flange edge (14) is rectangular, and the vertical end surface of the outer edge of the flange edge (14) forms a fitting surface that abuts against each other between the mold shells, and the fitting surface is provided with a connecting hole, and the lower bottom surface of the flange edge (14) is provided with a positioning groove (15), The mating surfaces of the plurality of mold shells are mated in pairs to form a rectangular array, the connection holes of two adjacent mold shells are penetrated and fastened together by fasteners, the lower bottom surfaces of all the mold shells are coplanar, and a top support is provided below the co-angular position of each group of four adjacent mold shells, the upper surface of the top plate (1) of each top support and the lower bottom surfaces of the four mold shells are all against each other, and the positioning protrusions (2) provided on the top plate (1) are inserted into the positioning grooves (15) in one or more mold shells.

8. The ribbed floor support structure according to claim 7, characterized in that: It also comprises a vertical pole (4), the telescopic rod (3) is mounted on the top of the vertical pole (4), a buckled annular connecting plate (5) is provided on the vertical pole (4), and one or more cross bars (6) are buckled between each pair of adjacent vertical poles (4).

9. The ribbed floor support structure according to claim 8, characterized in that: The bottom of the vertical pole (4) can be provided with a bottom support which can be adjusted in height.

Images