Prefabricated concrete reverse beating heat preservation structure

Abstract

The utility model discloses a prefabricated concrete reverse hit heat preservation structure, and relates to the technical field of buildings. Comprising a disc buckle pressing device, an aerogel heat preservation layer, an anti-crack steel wire mesh and an anti-crack adhesive mortar layer. The prefabricated concrete reverse-hitting heat preservation structure is fixed to the wall face of a building body, the anti-crack steel wire meshes are fixed to the upper surface and the lower surface of the aerogel heat preservation layer through disc buckle pressing devices, and the upper surface and the lower surface of the aerogel heat preservation layer and the anti-crack steel wire meshes are covered with the anti-crack adhesive mortar layers. Through the self-made disc buckle pressing device, the structure of the aerogel felt heat preservation plate and bonding of the anti-crack bonding mortar and the anti-crack steel wire mesh, the reliability of connection between the aerogel felt heat preservation plates is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a prefabricated concrete counter-pressed insulation structure with reliable connection. Background Art

[0002] At present, during construction, the building formwork is a combination of wooden boards and aluminum formwork, and then concrete is poured to form the main structure. After pouring, the formwork is removed. Repeated formwork assembly and disassembly consumes manpower, material and financial resources, and is not conducive to safe and civilized construction at the construction site. In order to achieve thermal insulation effect, a layer of insulation system is required on the exterior wall of the building.

[0003] The insulation system is generally composed of multiple layers of aerogel felt insulation boards. Due to its excellent thermal insulation, high temperature resistance and fire resistance, aerogel felt insulation boards are widely used in insulation in the industrial and construction fields. The thickness of the aerogel insulation layer composed of multi-layer aerogel felt insulation boards is usually between 10 mm and 100 mm. Generally speaking, the required insulation layer thickness will vary with changes in ambient temperature. For example, in extremely cold environments, the demand for household insulation is higher, and the thickness of the aerogel insulation layer will also increase accordingly. During the construction of multi-layer aerogel felt insulation boards, each layer of aerogel felt insulation board is required to fit tightly, and the upper and lower layers should be pressed together. There are also requirements for the press seam distance between adjacent layers.

[0004] Existing aerogel felt insulation panels are often connected using barbed anchors. The barbs are embedded in the aerogel felt insulation layer to provide a fastening effect. However, the elastic deformation of the barbs weakens over time, reducing the tightness of the connection between the aerogel felt insulation panels and making the connection between the aerogel felt insulation panels unreliable. Therefore, the present invention proposes a precast concrete counter-injection insulation structure. Utility Model Content

[0005] The utility model provides a prefabricated concrete counter-insulation structure, which solves the problem of unreliable connection between aerogel felt insulation boards.

[0006] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0007] A precast concrete counter-insulation structure, the insulation structure comprising an aerogel insulation layer, a crack-resistant steel wire mesh and a disc buckle pressing device;

[0008] Furthermore, the aerogel insulation layer is composed of at least two layers of aerogel felt insulation boards stacked up and down, and a plurality of circular through holes for clip installation are opened on the aerogel felt insulation boards, and the centers of the circular through holes for clip installation on each layer of aerogel felt insulation boards are aligned up and down;

[0009] Furthermore, the anti-cracking steel wire mesh includes a first anti-cracking steel wire mesh and a second anti-cracking steel wire mesh, and the first anti-cracking steel wire mesh and the second anti-cracking steel wire mesh are respectively pressed on the upper and lower surfaces of the aerogel insulation layer;

[0010] Furthermore, the disc buckle clamping device includes a disc buckle, a spring cover, and a buckle support. The buckle support extends through the buckle mounting circular through-hole, passes through the first anti-crack steel mesh, the aerogel insulation layer, and the second anti-crack steel mesh. The disc buckle and the spring cover engage and lock the buckle support, the aerogel insulation layer, and the anti-crack steel mesh. The first and second anti-crack steel meshes are covered with an anti-crack mortar layer on the sides away from the aerogel insulation layer.

[0011] As a further improvement of the preferred technical solution, the center distance between a single snap-fit ​​circular through hole and an adjacent snap-fit ​​circular through hole is equal, the line connecting the centers of multiple snap-fit ​​circular through holes is parallel to the edge line of the aerogel felt insulation board, and the snap-fit ​​circular through holes are distributed in a grid shape as a whole.

[0012] Due to the adoption of the above technical solution, the installation of multiple buckle supports is facilitated, and the multiple buckles are locked together after installation, thereby improving the reliability of the connection.

[0013] As a further improvement of the preferred technical solution, the spring cover includes a spring and a tooth-shaped protrusion, and an annular spring groove is provided at the bottom of the disc buckle, and the bottom surface of the spring groove is against the spring fixed on the spring cover.

[0014] Due to the adoption of the above technical solution, the spring is compressed to accumulate a part of elastic potential energy in advance, and the disc buckle and the spring cover are buckled together. The surface of the disc buckle with the spring fits with the surface of the spring cover that fixes the spring, preventing mortar from entering during the application of anti-cracking mortar.

[0015] As a further improvement of the preferred technical solution, a through hole larger than the diameter of the main rod of the buckle support is opened in the center of the spring cover, which is sleeved on the buckle support.

[0016] The adoption of the above technical solution facilitates the installation of the spring cover and the buckle support.

[0017] As a further improvement of the preferred technical solution, the lower surface of the spring cover has tooth-like protrusions, which are inserted into the grid of the first anti-cracking steel wire mesh; a single tooth-like protrusion is smaller than the grid size of the first anti-cracking steel wire mesh; the tooth-like protrusions are distributed in a circle around the main axis of the spring cover.

[0018] Due to the adoption of the above technical solution, after the spring cover is installed, the sliding of the anti-cracking steel wire mesh on the surface of the aerogel insulation layer is restricted.

[0019] As a further improvement of the preferred technical solution, it is characterized in that a slot is provided at the tail of the buckle support member for buckling with the disc.

[0020] Due to the adoption of the above technical solution, the disc buckle and the buckle support are more firmly connected.

[0021] The beneficial effects of the utility model are as follows: multiple snap support members are squeezed against the inner wall of the circular through hole for snap installation, thereby limiting the misalignment movement between the aerogel felt insulation boards; when the disc snap is not installed, the toothed protrusions on the lower surface of the spring cover are pressed against the grid of the anti-cracking steel wire mesh and the upper surface of the aerogel insulation layer, thereby limiting the sliding of the anti-cracking steel wire mesh on the upper surface of the aerogel insulation layer, thus facilitating subsequent installation; after the disc snap is pressed on the spring cover and engaged with the snap support member, the squeezing of the disc snap by the spring and the squeezing of the disc snap by the slot limit the axial movement of the aerogel felt insulation board along the main body of the snap support member; the anti-cracking bonding mortar is compounded on the upper and lower surfaces of the aerogel insulation layer, thereby further limiting the axial movement of the aerogel felt insulation board along the main body of the snap support member. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the disc buckle pressing device, four-layer aerogel felt insulation board and anti-cracking steel wire mesh.

[0024] Figure 3 This is a partial enlarged view of the cross-sectional structure of the clip support, clip installation circular through hole, spring cover, and disc clip.

[0025] In the figure: 1. aerogel insulation layer; 2. anti-cracking steel wire mesh; 3. disc buckle pressing device; 11. aerogel felt insulation board; 111. buckle mounting circular through hole; 21. first anti-cracking steel wire mesh; 22. second anti-cracking steel wire mesh; 31. disc buckle; 311. spring groove; 32. spring cover; 321. spring; 322. tooth-like protrusion; 33. buckle support; 331. slot. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0027] like Figure 1 As shown, the precast concrete counter-insulation structure includes 1, an aerogel insulation layer, 2, an anti-cracking steel wire mesh, and 3, a disc buckle pressing device.

[0028] Combine Figure 2-Figure 3The aerogel felt insulation board 11 is provided with evenly distributed snap-fit ​​circular through holes 111. The center distance between a single snap-fit ​​circular through hole 111 and an adjacent snap-fit ​​circular through hole 111 is equal. The center line of multiple snap-fit ​​circular through holes 111 is parallel to the edge line of the aerogel felt insulation board 11. The snap-fit ​​circular through holes 111 are distributed in a grid shape as a whole.

[0029] Specifically, the aerogel insulation layer 1 is formed by stacking four layers of snap-fit ​​circular through holes 111 on aerogel felt insulation boards 11 after their centers are aligned; the center distance between a single snap-fit ​​circular through hole 111 and an adjacent snap-fit ​​circular through hole 111 is equal, and the line connecting the centers of multiple snap-fit ​​circular through holes 111 is parallel to the edge line of the aerogel felt insulation board 11, and the snap-fit ​​circular through holes 111 are distributed in a grid shape as a whole.

[0030] It should be noted that the thermal conductivity (25° C.) of the aerogel felt insulation material of the aerogel felt insulation board 11 is ≤0.018W / (mK), the thickness of the insulation material is 10-100mm, and it has excellent mechanical properties and thermal insulation properties.

[0031] Specifically, the disc buckle pressing device includes a disc buckle 31, a spring cover 32 and a buckle support 33. The disc buckle 31 is in the shape of a truncated cone, and a concentric circular groove is provided on the side away from the first anti-cracking steel wire mesh 21. The disc buckle 31 is close to the first anti-cracking steel wire mesh 21 and is provided with a concentric annular spring groove 311. A through hole is provided in the center of the cone; the spring cover 32 is provided with a spring 321 and a tooth-shaped protrusion 322, and the bottom surface of the spring groove 311 is against the spring 321 fixed on the spring cover 32; the buckle support 33 is composed of a cone and a cylinder extending along the axis of the cone, the rod diameter of the cylinder matches the through hole diameter of the disc buckle, and the buckle support 33 is provided with a slot 331 near the end of the first anti-cracking steel wire mesh 21, which is clamped with the disc buckle 31.

[0032] Optimally, the diameter of the circular through hole 111 for snap-fit ​​installation on the aerogel felt insulation board 11 is smaller than the rod diameter of the snap-fit ​​support 33 .

[0033] Press the first anti-cracking steel wire mesh 21 on the upper surface of the aerogel insulation layer 1, press the second anti-cracking steel wire mesh 22 on the lower bottom surface of the aerogel insulation layer 1, and pass the snap support 33 through the snap installation circular through hole 111 through the second anti-cracking steel wire mesh 22, the aerogel insulation layer 1, and the first anti-cracking steel wire mesh 21 in sequence.

[0034] It should be noted that the snap support 33 is an injection-molded part made of polypropylene material. It and the aerogel felt insulation board 11 have a certain degree of deformability. After being pressed in, the aerogel felt insulation board 11 is squeezed by the side wall of the snap support and deformed, and the pull-out resistance is generated through shear friction, thereby improving the reliability of the connection.

[0035] The head of the snap support 33 presses the anti-cracking steel wire mesh 22 on the lower surface, and the tail with the snap groove 331 passes through the snap installation circular through hole 111 and extends from the first anti-cracking steel wire mesh 21. The surface of the spring cover 32 fixed with the spring 321 is placed on the side away from the aerogel insulation layer 1, and is put on the tail of the snap support 33, so that the lower surface of the spring cover 32 presses the first anti-cracking steel wire mesh 21. There are three tooth-shaped protrusions 322 on the lower surface of the spring cover 32 and they are distributed in a circle around the main axis of the spring cover 32. The size of the tooth-shaped protrusions 322 is smaller than the grid size of the first anti-cracking steel wire mesh 21, and the tooth-shaped protrusions 322 are fixed in the grid of the first anti-cracking steel wire mesh 21. Align the spring slot 311 of the disc buckle 31 with the spring 321 and press it down to lock it in the slot 331 at the tail of the buckle support 33. Then, apply anti-cracking bonding mortar evenly on the upper surface and lower bottom surface of the first anti-cracking steel wire mesh 21, the second anti-cracking steel wire mesh 22 and the aerogel insulation layer 3 to form a mortar layer.

[0036] It should be noted that the anti-cracking bonding mortar can be the Chaoyang brand polymer anti-cracking mortar of Shanghai Longshen Building Materials Co., Ltd., which has a compressive strength of 35MPa and has the characteristics of water resistance, anti-seepage, rust resistance and corrosion resistance.

[0037] The implementation principle of this embodiment is:

[0038] The circular through hole 111 for snap-fit ​​installation of the aerogel felt insulation board 11 generates elastic deformation after the snap-fit ​​support 33 is pressed in, so that the multi-layer aerogel felt insulation board 11 tends to move relative to each other, and the shear friction of the side wall generates anti-pullout force.

[0039] In the disc buckle pressing device 3, the tooth-shaped protrusion on the spring cover 32 is pressed against the upper surface of the aerogel insulation layer 1, and the spring 321 on the other side of the spring cover 32 is squeezed by the bottom surface of the spring groove 311 of the disc buckle 31 to accumulate a certain amount of elastic potential energy. When the compression gap distance between the aerogel felt insulation boards 11 changes, the elastic potential energy of the spring 321 increases or decreases accordingly to compensate for the change in the compression gap distance.

[0040] The anti-cracking bonding mortar and the anti-cracking steel wire mesh are hardened after a period of time after being bonded together, thereby enhancing the pressing effect of the disc buckle pressing device 3.

[0041] In summary, the utility model can achieve three-fold reinforcement of the connection between the aerogel felt insulation boards, thereby improving the reliability of the connection between the aerogel felt insulation boards.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various modifications and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such modifications and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A precast concrete back-pressed insulation structure comprising an aerogel insulation layer (1), characterized in that: It also includes a crack-resistant steel wire mesh (2) and a disc buckle pressing device (3); The aerogel insulation layer (1) is composed of at least two layers of aerogel felt insulation boards (11), and the aerogel felt insulation boards (11) are provided with a plurality of circular through holes (111) for snap-fit ​​installation, and the centers of the circular through holes (111) for snap-fit ​​installation on each layer of aerogel felt insulation boards (11) are aligned vertically; The anti-cracking steel wire mesh (2) comprises a first anti-cracking steel wire mesh (21) and a second anti-cracking steel wire mesh (22), and the first anti-cracking steel wire mesh (21) and the second anti-cracking steel wire mesh (22) are respectively pressed onto the upper and lower surfaces of the aerogel thermal insulation layer (1); The disc buckle pressing device (3) comprises a disc buckle (31), a spring cover (32) and a buckle support (33); The buckle support member (33) penetrates the buckle installation circular through hole (111), passes through the first anti-cracking steel wire mesh (21), the aerogel thermal insulation layer (1) and the second anti-cracking steel wire mesh (22), and the disc buckle (31) and the spring cover (32) buckle and lock the buckle support member (33), the aerogel thermal insulation layer (1) and the anti-cracking steel wire mesh (2); the first anti-cracking steel wire mesh (21) and the second anti-cracking steel wire mesh (22) are covered with an anti-cracking mortar layer on the side away from the aerogel thermal insulation layer (1).

2. The precast concrete counter-insulation structure according to claim 1, characterized in that: The center distance between a single snap-fit ​​circular through hole (111) and adjacent snap-fit ​​circular through holes (111) is equal, a line connecting the centers of the multiple snap-fit ​​circular through holes (111) is parallel to the edge line of the aerogel felt insulation board (11), and the snap-fit ​​circular through holes (111) are distributed in a grid shape as a whole.

3. The precast concrete counter-pressed insulation structure according to claim 1, characterized in that: The spring cover (32) is provided with a spring (321) and a tooth-shaped protrusion (322); a spring groove (311) is provided at the bottom of the disc buckle (31); and the bottom surface of the spring groove (311) abuts against the spring (321) fixed on the spring cover (32).

4. The precast concrete counter-insulation structure according to claim 1, characterized in that: A through hole is provided at the center of the spring cover (32), which is sleeved on the buckle support.

5. The precast concrete counter-pressed insulation structure according to claim 1, characterized in that: The lower surface of the spring cover (32) has tooth-shaped protrusions (322), which are inserted into the mesh of the first anti-cracking steel wire mesh (21); the size of the tooth-shaped protrusions (322) on the lower surface of a single spring cover (32) is smaller than the mesh size of the first anti-cracking steel wire mesh (21); and the tooth-shaped protrusions (322) on the lower surface of the spring cover (32) are distributed in a circle around the main axis of the spring cover (32).

6. The precast concrete counter-pressed insulation structure according to claim 1, characterized in that: The buckle support member (33) is provided with a clamping groove (331) near the end of the first anti-cracking steel wire mesh, which is clamped with the disc buckle (31).

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