Mortar leakage prevention structure for post-cast strip of prefabricated laminated slab

Abstract

The utility model relates to the technical field of laminated slabs, in particular to a grout leakage prevention structure for a post-cast strip of a prefabricated laminated slab. According to the technical scheme, the laminated slab comprises a supporting plate, a screw hole, a screw rod and a pressing plate, laminated slab bodies are arranged on the two sides of the outer wall of the upper end of the supporting plate, the screw hole is formed in one side of the outer wall of the upper end of the supporting plate, the screw rod is in threaded connection with the interior of the screw hole, and the pressing plate is arranged on the outer wall of one side of the screw rod. And the sealing performance between the laminated slab and the supporting plate is ensured, so that slurry leakage during pouring of the laminated slab bodies is avoided, and the sealing performance in the pouring process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of composite slabs, in particular to a slurry leakage prevention structure of a post-cast belt of a prefabricated composite slab. Background Art

[0002] The composite floor is an assembled integral floor composed of precast panels and cast-in-place reinforced concrete layers. The size of the precast assembled concrete composite panels is limited due to transportation, lifting and handling. The large precast composite panels need to be split into two pieces. Post-cast strips are generally required at the joints of the precast composite panels to effectively ensure the stability of the connection between the two precast composite panels. They are connected on site through cast-in-place joints, and then concrete is poured to achieve the same stress performance as the cast-in-place panels.

[0003] Patent announcement number CN218405976U discloses a prefabricated composite floor slab post-casting strip anti-leakage slurry structure, including prefabricated composite panels, fastening components, and support plates. The gap between two prefabricated composite panels forms a joint; the fastening components include steel bars, connecting modules, and locking parts. In the assembled state, the connecting rod passes downward through the reserved hole on the support plate from the gap between the adjacent steel bars, and the locking parts are fastened and assembled at the penetration position of the connecting rod to make the upper surface of the support plate fit tightly with the lower surface of the prefabricated composite panel. This scheme replaces the use of existing support formwork by providing steel bars, fastening components and locking parts. The steel bars, fastening components and locking parts are used in combination to support the pressing plate upward, providing an upward pulling force for the pressing plate, so that the pressing plate can perfectly support and fit the post-casting strips of adjacent prefabricated composite panels, preventing the prefabricated composite panels from moving upward under the buoyancy of concrete, and preventing leakage of slurry from the gaps.

[0004] Although the prior art CN218405976U has many benefits during use, it still has the following problems: it maintains a tight fit by tightening the bolts, but when the connecting rod passes through the support plate, a gap will appear, causing moisture inside the concrete to leak through the gap. Utility Model Content

[0005] The utility model aims to provide a slurry leakage prevention structure for a post-cast zone of a prefabricated composite slab, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated composite slab post-cast zone anti-leakage slurry structure, comprising a support plate, screw holes, screw rods and a pressure plate, the composite slab body is arranged on both sides of the outer wall of the upper end of the support plate, a screw hole is opened on one side of the outer wall of the upper end of the support plate, a screw rod is threadedly connected inside the screw hole, and a pressure plate is arranged on the outer wall of one side of the screw.

[0007] When using a prefabricated composite slab post-casting strip anti-leakage structure in the present technical solution, the composite slab body is placed on the upper end of the pallet through an external lifting device, and the staff manually rotates the screw to ensure the stability of the screw position through the screw hole. After that, the staff manually takes a wrench to rotate the nut so that the nut squeezes the pressure plate, and the pressure plate squeezes the composite slab body to ensure that the composite slab is in contact with the bonding strip.

[0008] Preferably, adhesive strips are attached and fixed on both sides of the upper outer wall of the support plate, and the adhesive strips are in contact with the lower outer wall of the laminate body. The adhesive strips ensure the sealing between the support plate and the laminate body. And the adhesive strips need to clean the outer wall of the support plate when in use.

[0009] Preferably, the outer wall of the lower end of the support plate is provided with support rods which are equidistantly and parallelly distributed, and the support rods are used to support the support plate.

[0010] Preferably, a movable hole is provided inside the pressing plate, and the screw rod is located inside the movable hole. The pressing plate can move vertically outside the screw rod through the movable hole.

[0011] Preferably, the screw hole and the screw rod are located between the laminated plate bodies, and the pressing plate is located at the upper end of the laminated plate bodies. The pressing plate can press the laminated plate bodies.

[0012] Preferably, a nut is engaged with an outer wall of one side of the screw rod, and the nut is located at the upper end of the pressing plate. The nut can maintain the extrusion force on the pressing plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the effect of avoiding leakage of slurry by arranging screws, pressure plates and support plates, and the composite board body is placed on the upper end of the support plate through an external lifting device, and the staff manually rotates the screw to ensure the stability of the position of the screw through the screw hole, and then the staff manually takes the wrench to rotate the nut so that the nut squeezes the pressure plate, and the pressure plate squeezes the composite board body to ensure that the composite board is in contact with the adhesive strip and the sealing between the composite board and the support plate, thereby avoiding leakage of slurry during pouring between the composite board bodies and ensuring the sealing during the pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of the support plate structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 Schematic diagram of a partial enlargement of the middle screw structure.

[0016] In the figure: 1, support plate; 11, support rod; 12, adhesive strip; 13, composite plate body; 2, screw hole; 21, screw rod; 22, pressure plate; 23, movable hole; 24, nut. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1 to Figure 2 , the utility model provides two embodiments:

[0019] Embodiment 1: A prefabricated composite slab post-cast zone anti-leakage slurry structure comprises a support plate 1, a screw hole 2, a screw rod 21 and a pressure plate 22, a composite slab body 13 is provided on both sides of the upper outer wall of the support plate 1, a screw hole 2 is provided on one side of the upper outer wall of the support plate 1, a screw hole 2 is provided, a screw rod 21 is threadedly connected inside the screw hole 2, and a pressure plate 22 is provided on the outer wall on one side of the screw rod 21.

[0020] The outer wall of the lower end of the support plate 1 is provided with support rods 11 which are equidistantly and parallelly distributed. The support rods 11 are used to support the support plate 1.

[0021] A movable hole 23 is provided inside the pressing plate 22, and the screw 21 is located inside the movable hole 23. The pressing plate 22 can move vertically outside the screw 21 through the movable hole 23. After the concrete solidifies, the staff manually takes a hammer to hit the screw 21, and the vibration of the screw 21 drives the screw 21 to separate from the concrete, so that the screw 21 can be disassembled, and then only the generated through hole needs to be blocked.

[0022] The screw hole 2 and the screw rod 21 are located between the laminated plate body 13, and the pressing plate 22 is located at the upper end of the laminated plate body 13. The pressing plate 22 can press the laminated plate body 13.

[0023] The outer wall of one side of the screw rod 21 is meshed with a nut 24, and the nut 24 is located at the upper end of the pressing plate 22. The nut 24 can maintain the extrusion force on the pressing plate 22, and the composite board body 13 is placed on the upper end of the support plate 1 through an external lifting device, and the staff manually rotates the screw rod 21, and the position of the screw rod 21 is ensured to be stable through the screw hole 2, and then the staff manually takes a wrench to rotate the nut 24, so that the nut 24 squeezes the pressing plate 22, and the pressing plate 22 squeezes the composite board body 13 to ensure that the composite board is in contact with the adhesive strip 12.

[0024] Embodiment 2: A slurry leakage prevention structure for the post-cast strip of a prefabricated composite slab comprises a support plate 1, a screw hole 2, a screw rod 21 and a pressure plate 22. A composite slab body 13 is provided on both sides of the outer wall of the upper end of the support plate 1. A screw hole 2 is provided on one side of the outer wall of the upper end of the support plate 1. The screw hole 2 is threadedly connected with the screw rod 21. A pressure plate 22 is provided on the outer wall on one side of the screw rod 21.

[0025] Adhesive strips 12 are attached and fixed on both sides of the outer wall of the upper end of the support plate 1, and the adhesive strips 12 are in contact with the outer wall of the lower end of the composite board body 13. The adhesive strips 12 ensure the sealing between the support plate 1 and the composite board body 13. When the adhesive strips 12 are used, the outer wall of the support plate 1 needs to be cleaned, and the pressing plate 22 squeezes the composite board body 13 to ensure that the composite board is in contact with the adhesive strips 12, and the sealing between the composite board and the support plate 1 is ensured, thereby avoiding leakage of slurry between the composite board body 13 during pouring, and ensuring the sealing during the pouring process.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A grout leakage prevention structure for a post-casting belt of a prefabricated composite slab, comprising a support plate (1), a screw hole (2), a screw rod (21) and a pressing plate (22), characterized in that: The upper outer wall of the support plate (1) is provided with a composite plate body (13) on both sides, the upper outer wall of the support plate (1) is provided with a screw hole (2) on one side, the screw hole (2) is threadedly connected with a screw rod (21), and a pressure plate (22) is provided on one side of the outer wall of the screw rod (21). Adhesive strips (12) are attached and fixed on both sides of the upper outer wall of the support plate (1), and the adhesive strips (12) are in contact with the lower outer wall of the composite plate body (13). The outer wall of the end is installed with support rods (11) that are equidistantly distributed in parallel, the pressure plate (22) is provided with a movable hole (23) inside, the screw rod (21) is located inside the movable hole (23), the screw hole (2) and the screw rod (21) are located between the composite plate body (13), the pressure plate (22) is located at the upper end of the composite plate body (13), the outer wall of one side of the screw rod (21) is meshed with a nut (24), and the nut (24) is located at the upper end of the pressure plate (22).

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