A concrete precast slab containing a sandwiched thermal insulation layer

Abstract

The utility model belongs to prefabricated slab manufacturing technical field, concretely is a kind of concrete prefabricated slab containing sandwich thermal insulation layer, including thermal insulation board, the upper and lower of thermal insulation board is respectively provided with the reinforcing mesh surface being formed by transverse reinforcement and longitudinal reinforcement, tightening structure, the reinforcing mesh surface of the upper and lower sides of thermal insulation board is respectively acted with the both ends of tightening structure, in the thermal insulation layer of inside being provided with wave structure, can reduce the use of concrete, reduce the mass of prefabricated slab, to facilitate handling assembly, simultaneously under the self performance of thermal insulation layer, can improve the thermal insulation effect of prefabricated slab, in the process of buckling, can guarantee the form of reinforcing mesh surface, and the opposite pull of both sides, can reduce the concrete layer of forming to fall off, better guarantee the quality of the prefabricated slab of forming.

Description

Technical Field

[0001] This utility model belongs to the field of precast slab manufacturing technology, specifically a precast concrete slab containing a sandwich insulation layer. Background Technology

[0002] Precast slabs are the floor slabs used in early construction; they are the modules or panels used in engineering projects. Because they are precast concrete components manufactured and processed in a prefabrication plant and then transported directly to the construction site for installation, they are called precast slabs. In existing documents, CN 216007620 U discloses a composite thermal insulation wall panel based on fiber recycled concrete, which includes a bottom plate and a top plate. The middle part of the opposite surfaces of the top plate and the bottom plate is provided with a rectangular groove. Each groove is provided with a connecting mechanism, which includes a circular block, a rotating rod and four elastic blocks. The upper end of each of the four elastic blocks is fixedly connected with an arc block. The rotating rod is rotated by a cross rod, which causes the stud to separate from the threaded surface of the insert. At this time, the insert can be disengaged from the slot, the top plate and the bottom plate can be separated, and the elastic blocks and arc blocks can be removed one by one from the groove and reused. In existing documents, precast concrete slabs are heavy, difficult to transport, and have poor thermal insulation. The internal skeleton is prone to deformation or displacement during pouring, affecting the overall pouring quality of the precast slab. Therefore, a precast concrete slab with a sandwich insulation layer is proposed to address the above problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, and considering the problems of heavy precast concrete slabs being difficult to handle, having poor insulation, and internal skeletons being prone to deformation or displacement during pouring, thus affecting the overall quality of the precast slab, this invention proposes a precast concrete slab with a sandwich insulation layer. This reduces the weight of the precast slab, facilitating handling and assembly. Simultaneously, the insulation layer itself improves the insulation effect of the precast slab. During the interlocking process, it ensures the shape of the reinforcing mesh, and the lateral tension reduces the shedding of the formed concrete layer, thus better guaranteeing the quality of the formed precast slab.

[0004] The technical solution adopted by this utility model to solve its technical problem is a precast concrete slab containing a sandwich insulation layer, including an insulation board, wherein the top and bottom of the insulation board are respectively provided with a steel mesh surface composed of transverse steel bars and longitudinal steel bars. The insulation board has a through-hole tensioning structure, and a tensioning structure is installed in the tensioning hole. The two ends of the tensioning structure act on the steel mesh surfaces on the upper and lower sides of the insulation board, respectively. The connecting buckle is used to connect the transverse and longitudinal reinforcing bars at their intersections, as the transverse and longitudinal reinforcing bars are arranged in a grid at a perpendicular angle.

[0005] Preferably, the insulation board has a corrugated structure, and the concrete layer is cast and wrapped around the outside of the insulation board.

[0006] Preferably, the tightening structure includes a fixed screw cylinder that passes through a tension hole embedded in the insulation board. The fixed screw cylinder has an internal thread, and compression rings are screwed onto both ends of the fixed screw cylinder. A movable buckle is fitted onto the compression ring, and a matching buckle is fixed to the outer side of the movable buckle. A compression ring is fitted onto the top of the locking screw, and the compression ring is positioned above the movable buckle. It can be fixed by the vertical pull of the steel mesh surfaces on the upper and lower sides of the insulation board, which can improve the stability of the frame and ensure the strength of the cast concrete slab.

[0007] Preferably, the tightening structure is located between the upper and lower peaks of the insulation board, the transverse steel bar is horizontally erected on the peaks of the insulation board, the movable buckle is fastened to the outside of the transverse steel bar, the longitudinal steel bar is horizontally arranged between the two peaks of the insulation board, and the longitudinal steel bar is arranged inside the transverse steel bar, which can help improve the strength of the precast slab and achieve the lightweighting of the slab.

[0008] The advantages of this utility model are: This invention strengthens the concrete by incorporating a steel mesh consisting of transverse and longitudinal reinforcing bars on the exterior of the insulation board. Furthermore, the steel mesh ensures the concrete's molding strength and molding effect. The interior insulation layer features a corrugated structure, reducing concrete usage and the weight of the precast slab for easier handling and assembly. Simultaneously, the insulation layer's inherent properties enhance the insulation performance of the precast slab. By tightening the structure, the combined effect of the steel mesh and the insulation board is achieved. When fixing the steel mesh, the fixing screw is embedded in the tension hole in the insulation board. By rotating the locking screw and cooperating with the fastener, the transverse steel bars can be fastened and fixed. During the fastening process, the shape of the steel mesh can be maintained. At the same time, the pull on both sides can reduce the shedding of the formed concrete layer and better ensure the quality of the formed precast slab. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the overall structure of the precast slab; Figure 2 This is a schematic diagram of the internal skeleton structure of the precast slab; Figure 3 This is a top view of the skeleton structure. Figure 4 for Figure 3 Schematic diagram of the structure in sectional view along the AA section; In the diagram: 1. Insulation board, 2. Concrete layer, 3. Horizontal reinforcement, 4. Tightening structure, 5. Longitudinal reinforcement, 6. Connecting buckle, 41. Fixing screw, 42. Movable buckle, 43. Matching buckle, 44. Locking screw, 45. Compression ring. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0012] Please see Figure 1-4 As shown, a precast concrete slab with a sandwich insulation layer includes an insulation board 1, wherein the top and bottom of the insulation board 1 are respectively provided with a steel mesh surface composed of transverse steel bars 3 and longitudinal steel bars 5. Tightening structure 4, the insulation board 1 has a through-hole tensioning hole, the tightening structure 4 is installed in the tensioning hole, and the two ends of the tightening structure 4 act on the steel mesh surfaces on the upper and lower sides of the insulation board 1 respectively. The connecting buckle 6 is used to connect the transverse steel bars 3 and longitudinal steel bars 5 at their intersections, forming a grid. The insulation board 1 has a wavy structure, and the concrete layer 2 is cast and wrapped around the outside of the insulation board 1. By setting a steel mesh composed of transverse steel bars 3 and longitudinal steel bars 5 on the outside of the insulation board 1, the strength of the concrete can be enhanced. Secondly, by setting a steel mesh, the molding strength and molding effect of the concrete can be guaranteed. The wavy structure of the insulation layer 1 inside can reduce the use of concrete and reduce the weight of the precast slab, making it easier to handle and assemble. At the same time, the insulation layer 1 itself can improve the insulation effect of the precast slab.

[0013] The tightening structure 4 includes a fixed screw cylinder 41, which penetrates and is embedded in a tension hole within the insulation board 1. The fixed screw cylinder 41 has an internal thread. Compression rings 45 are screwed onto both ends of the fixed screw cylinder 41. Movable retaining rings 42 are fitted onto the compression rings 45, and a mating buckle 43 is fixed to the outer surface of the movable retaining ring 42. A compression ring 45 is fitted onto the top of the screw of the locking screw 44, and the compression ring 45 is positioned above the movable retaining ring 42. The tightening structure 4 is located between the upper and lower peaks of the insulation board 1. The transverse reinforcing bars 3 are transversely supported on the peaks of the insulation board 1, and the movable retaining rings 42 are fastened to the outside of the transverse reinforcing bars 3. The longitudinal reinforcing bars 5 are transversely positioned between the two peaks of the insulation board 1, and are positioned above the transverse reinforcing bars 42. Inside the reinforcing bar 3, during operation, a steel mesh composed of transverse reinforcing bars 3 and longitudinal reinforcing bars 5 is provided on the upper and lower sides of the insulation board 1. Through the cooperation of the tightening structure 4, the combination effect of the steel mesh and the insulation board 1 is achieved. When fixing the steel mesh, the fixing screw 41 is embedded in the tension hole fixed in the insulation board 1. By rotating the locking screw 44, the movable buckle 42 can be squeezed and fixed. With the cooperation of the buckle 43, the transverse reinforcing bar 3 can be fastened and fixed. During the fastening process, by rotating the locking screw 44, the steel mesh can be tightly fixed to the upper and lower sides of the insulation board 1, which can ensure the shape of the steel mesh. At the same time, the pull on both sides can reduce the fall off of the formed concrete layer 2, and better ensure the quality of the formed precast slab.

[0014] This invention strengthens the concrete by providing a steel mesh composed of transverse steel bars 3 and longitudinal steel bars 5 on the outside of the insulation board 1. Secondly, by providing the steel mesh, the molding strength and molding effect of the concrete can be guaranteed. The insulation layer 1 with a corrugated structure inside reduces the amount of concrete used and lowers the weight of the precast slab, making it easier to handle and assemble. At the same time, the insulation layer 1 itself can improve the insulation effect of the precast slab. A steel mesh composed of transverse steel bars 3 and longitudinal steel bars 5 is provided on the upper and lower sides of the insulation board 1. Through the cooperation of the tightening structure 4, the steel mesh and the insulation board 1 are combined. When fixing the steel mesh, the fixing screw 41 is embedded in the tension hole in the insulation board 1. By rotating the locking screw 44, the movable buckle 42 can be squeezed and fixed. With the cooperation of the buckle 43, the transverse steel bars 3 can be fastened and fixed. During the fastening process, by rotating the locking screw 44, the steel mesh can be tightly fixed to the upper and lower sides of the insulation board 1, which can maintain the shape of the steel mesh. At the same time, the pull on both sides can reduce the fall off of the formed concrete layer 2, and better ensure the quality of the formed precast slab.

[0015] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A precast concrete slab containing a sandwich insulation layer, characterized in that: include: Insulation board (1), wherein the upper and lower surfaces of the insulation board (1) are respectively provided with a steel mesh surface composed of transverse steel bars (3) and longitudinal steel bars (5); Tightening structure (4): The insulation board (1) has a through-hole tension hole, and the tightening structure (4) is installed in the tension hole. The two ends of the tightening structure (4) act on the steel mesh surfaces on the upper and lower sides of the insulation board (1). The connecting buckle (6) is used to connect the transverse steel bars (3) and the longitudinal steel bars (5) at the intersection of the transverse steel bars (3) and the longitudinal steel bars (5).

2. A precast concrete slab with a sandwich insulation layer according to claim 1, characterized in that: The insulation board (1) has a wavy structure, and the concrete layer (2) is cast and wrapped around the outside of the insulation board (1).

3. A precast concrete slab with a sandwich insulation layer according to claim 2, characterized in that: The tightening structure (4) includes a fixed screw cylinder (41), which penetrates the tension hole embedded in the insulation plate (1). The fixed screw cylinder (41) is provided with an internal thread. Both ends of the fixed screw cylinder (41) are screwed with compression rings (45). A movable buckle (42) is fitted on the compression ring (45). A mating buckle (43) is fixed on the outer side of the movable buckle (42).

4. A precast concrete slab with a sandwich insulation layer according to claim 3, characterized in that: The top of the locking screw (44) is fitted with a compression ring (45), which is positioned above the movable retaining ring (42).

5. A precast concrete slab containing a sandwich insulation layer according to claim 4, characterized in that: The tightening structure (4) is located between the upper and lower peaks of the insulation board (1), the transverse steel bar (3) is horizontally erected on the peaks of the insulation board (1), and the movable buckle (42) is fastened to the outside of the transverse steel bar (3).

6. A precast concrete slab containing a sandwich insulation layer according to claim 5, characterized in that: The longitudinal steel bar (5) is arranged transversely between the two crests of the insulation board (1), and the longitudinal steel bar (5) is arranged inside the transverse steel bar (3).

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