Anti-falling sandwich thermal insulation external wall panel

Abstract

The utility model discloses an anti-falling sandwich thermal insulation external wall panel which comprises an outer acanthus, a thermal insulation core plate and an inner acanthus which are overlapped and compounded together from outside to inside, the outer acanthus and the inner acanthus are both autoclaved aerated concrete plates, and a first steel net rack and a second steel net rack are arranged in the outer acanthus and the inner acanthus respectively. A plurality of tension bolts are arranged between the outer acanthus and the inner acanthus, and are uniformly distributed along the large surface of the outer acanthus. According to the anti-falling sandwich thermal insulation external wall panel, the inner acanthus and the outer acanthus are connected through the high-strength bolts, and the falling risk is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of exterior wall composite panel technology, and in particular to an anti-fall-off sandwich insulation exterior wall panel. Background Technology

[0002] Sandwich insulated exterior wall panels are an important type of prefabricated building exterior wall cladding. They are prefabricated in factories and installed as a single piece on-site, significantly reducing on-site work time and construction costs. Furthermore, the sandwiched insulation layers, including polystyrene boards, graphite polystyrene boards, extruded polystyrene boards, graphite extruded polystyrene boards, and rock wool boards, achieve integrated insulation structure, eliminating the need for separate exterior wall insulation and providing excellent insulation performance.

[0003] However, existing sandwich-type insulated exterior wall panels on the market also use a sandwich structure, with an insulation board in the middle. The outer layer often uses insulating mortar to bond a mesh, which is then anchored along its thickness through the insulation board to the steel mesh frame of the inner structure. Because a finishing layer also needs to be bonded to the outer structure, under heavy loads, the connection strength between the insulation board and the outer structure may be insufficient, potentially leading to detachment in windy weather.

[0004] Therefore, it is necessary to develop a new type of anti-fall-off sandwich insulation exterior wall panel to address the above-mentioned defects, which has become an urgent problem for those skilled in the art to solve. Utility Model Content

[0005] The purpose of this utility model is to provide a sandwich-type thermal insulation exterior wall panel that prevents detachment. It uses high-strength bolts to connect the inner leaf plate and the outer leaf plate, which significantly reduces the risk of detachment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses an anti-fall-off sandwich insulated exterior wall panel, comprising an outer leaf plate, an insulation core plate, and an inner leaf plate stacked together from the outside to the inside. Both the outer leaf plate and the inner leaf plate are made of autoclaved aerated concrete slabs and are respectively provided with a steel mesh frame one and a steel mesh frame two inside. Tensioning bolts are provided between the outer leaf plate and the inner leaf plate, and multiple tensioning bolts are evenly arranged along the large surface of the outer leaf plate.

[0008] Furthermore, the tensioning bolt is specifically a high-strength galvanized bolt, and the outer and inner leaf plates have countersunk holes at the bolt head and nut of the tensioning bolt.

[0009] Furthermore, large round washers are provided at both the bolt head and the nut of the tensioning bolt.

[0010] Furthermore, the insulation core board is specifically made of any one of extruded polystyrene board, graphite extruded polystyrene board, polystyrene board, graphite polystyrene board, rock wool board, and polyurethane insulation board.

[0011] Furthermore, the insulation core board is bonded to the outer leaf plate and the inner leaf plate respectively through adhesive layers on both sides.

[0012] Furthermore, a decorative layer is also provided on the outer wall of the outer leaf plate.

[0013] Furthermore, it also includes spacer blocks, the thickness of which is adapted to the thickness of the insulation core board, and the strength of which is greater than that of the insulation core board; the number of spacer blocks is consistent with that of the tension bolts and they are set one-to-one; the spacer blocks are sleeved on the tension bolts; and the insulation core board has clearance holes for installing the spacer blocks.

[0014] Furthermore, the spacer block body is cylindrical, and a bolt through hole for the tension bolt is provided in the middle of the spacer block body. Guide chamfers are provided at both ends of the spacer block body.

[0015] Furthermore, the top of the spacer block body is configured as a platform with an increased diameter, and a stepped clearance hole is provided on the large side of the top of the insulation core board.

[0016] Furthermore, multiple recesses are respectively formed on the two end faces of the spacer block.

[0017] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0018] This utility model discloses a sandwich-type thermal insulation exterior wall panel that prevents detachment. By using autoclaved aerated concrete panels for both the outer and inner leaf plates, its strength is improved, and it can be anchored in the thickness direction using tension bolts. The connection strength is high and it is not easy to fall off by using tension bolts for connection.

[0019] Furthermore, the use of hot-dip galvanized tension bolts and large round washers for anchoring connections prevents corrosion from rainwater contact. The countersunk holes accommodate the bolt heads and nuts without affecting the construction of the interior and exterior finishes. Adding a decorative layer to the outer wall of the outer leaf panel allows for simultaneous exterior wall decoration during prefabricated wall installation, requiring only grouting and significantly shortening the construction cycle. By adding spacers fitted onto the tension bolts and aligning them with the thickness of the insulation core board, the insulation core board is only compressed within a small area during bolt tightening. The spacers primarily bear the anchoring force of the tension bolts, preventing further compression and ensuring consistent overall thickness of the exterior wall panels. The addition of guide chamfers facilitates insertion of the spacers into the clearance holes; the addition of a top platform allows the spacers to be inserted into the clearance holes before the insulation core board is laminated onto the outer leaf panel, preventing them from detaching from the bottom of the clearance holes during insulation core board transport. By adding recesses, the adhesive in the bonding layer can be contained, increasing the bonding area and improving the bonding strength. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the main sectional view of Embodiment 1 of the anti-fall-off sandwich insulation exterior wall panel of this utility model;

[0022] Figure 2 This is a schematic diagram of the main sectional view of Embodiment 2 of the anti-fall-off sandwich insulation exterior wall panel of this utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the spacer block in Embodiment 2 of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the spacer block from another angle in Embodiment 2 of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Outer leaf plate; 101. Steel grid frame one; 102. Groove; 2. Insulation core board; 201. Clearance hole; 3. Inner leaf plate; 301. Steel grid frame two; 4. Spacer block; 401. Spacer block body; 402. Top platform; 403. Bolt through hole; 404. Recess; 5. Adhesive layer; 6. Anchor bolt; 7. Decorative layer. Detailed Implementation

[0026] The core of this utility model is to provide a sandwich-type thermal insulation exterior wall panel that prevents detachment. It uses high-strength bolts to connect the inner leaf plate and the outer leaf plate, which significantly reduces the risk of detachment.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In the following detailed description of the accompanying drawings, the descriptions of top, bottom, left, and right are all relative to the accompanying drawings and should not be construed as limiting the present utility model.

[0028] Refer to the attached diagram. Figure 1 This is a schematic diagram of the main sectional view of Embodiment 1 of the anti-fall-off sandwich insulation exterior wall panel of this utility model; Figure 2 This is a schematic diagram of the main sectional view of Embodiment 2 of the anti-fall-off sandwich insulation exterior wall panel of this utility model; Figure 3 This is a schematic diagram of the three-dimensional structure of the spacer block in Embodiment 2 of this utility model; Figure 4 This is a three-dimensional structural diagram of the spacer block from another angle in Embodiment 2 of this utility model.

[0029] Example 1

[0030] In one specific implementation, such as Figure 1 As shown, an anti-fall-off sandwich insulated exterior wall panel includes an outer leaf panel 1, an insulation core panel 2, and an inner leaf panel 3 stacked together from the outside to the inside. Both the outer leaf panel 1 and the inner leaf panel 3 are made of autoclaved aerated concrete (AAC) panels and have steel mesh frames 101 and 301 respectively installed inside. Specifically, the density of AAC panels is only 1 / 5 that of ordinary concrete, but the compressive strength can reach 3.5-7.5 MPa, and it has a low thermal conductivity. Tensioning bolts 6 are installed between the outer leaf panel 1 and the inner leaf panel 3, with multiple tensioning bolts 6 evenly distributed along the large surface of the outer leaf panel 1.

[0031] By using autoclaved aerated concrete panels for both the outer leaf plate 1 and the inner leaf plate 3, their strength is improved, and they can be tightened and anchored in the thickness direction using tension bolts 6. The connection strength is high and it is not easy for them to fall off.

[0032] In one specific embodiment of this utility model, such as Figure 1 As shown, the tension bolt 6 is a high-strength galvanized bolt with a specification of M20 or higher. Countersunk holes are provided on the outer walls of the outer blade 1 and the inner blade 3 at the bolt head and nut of the tension bolt 6.

[0033] Specifically, such as Figure 1 As shown, large round washers are provided at both the bolt head and nut of the tension bolt 6, and the large round washers are hot-dip galvanized.

[0034] The anchoring connection is achieved by using hot-dip galvanized tension bolts 6 and the large round washer to prevent corrosion after contact with rainwater; the countersunk hole accommodates the bolt head and nut without affecting the construction of the inner and outer finishing layers.

[0035] In one specific implementation of this embodiment, such as... Figure 1 As shown, the insulation core board 2 is specifically made of any one of extruded polystyrene board, graphite extruded polystyrene board, polystyrene board, graphite polystyrene board, rock wool board and polyurethane insulation board.

[0036] In one specific implementation of this embodiment, such as... Figure 1 As shown, the insulation core board 2 is bonded to the outer leaf plate 1 and the inner leaf plate 3 on both sides by the adhesive layer 5 respectively.

[0037] Specifically, the large side surface of the insulation core board 2 can be roughened to increase the bonding strength between the adhesive layer 5 and the insulation core board 2.

[0038] In one specific implementation of this embodiment, such as... Figure 1 As shown, a decorative layer 7 is also provided on the outer wall of the outer leaf plate 1. The decorative layer 7 can be made of aluminum alloy decorative panel, ceramic tile or marble slab, and is bonded with mortar or adhesive.

[0039] By adding a decorative layer 7 on the outer wall of the outer leaf plate 1, the exterior wall decoration can be completed simultaneously with the installation of the prefabricated wall, requiring only grouting, which greatly shortens the construction cycle.

[0040] Example 2

[0041] During actual processing, the applicant discovered that due to the low density and strength of the intermediate insulation core board 2, a larger applied torque during the tightening of the tension bolts 6 would slightly reduce the total thickness of the exterior wall panel; conversely, a smaller applied torque would slightly increase the total thickness of the exterior wall panel. The reason for this lies in the fact that different materials and batches of the insulation core board 2 result in slightly different strengths, leading to slightly different amounts of thickness deformation under compression. To ensure the consistency of the exterior wall panel thickness, improvements are needed based on Example 1.

[0042] like Figures 2-4 As shown, the anti-fall-off sandwich insulated exterior wall panel of this utility model also includes spacer blocks 4. The thickness of the spacer blocks 4 is adapted to the thickness of the insulation core board 2, and the strength of the spacer blocks 4 is greater than that of the insulation core board 2. The number of spacer blocks 4 is the same as that of the tension bolts 6 and they are set one-to-one. The spacer blocks 4 are sleeved on the tension bolts 6, and the insulation core board 2 has clearance holes 201 for installing the spacer blocks 4.

[0043] Specifically, such as Figures 2-4As shown, the spacer block 4 is also made of autoclaved aerated concrete, and its strength is significantly greater than that of the insulation core board 2 and the inner and outer leaf plates on both sides. Moreover, the thickness of the spacer block 4 is 1 to 2 millimeters less than that of the insulation core board 2 when it is not under pressure.

[0044] By adding a spacer block 4 that is fitted onto the tension bolt 6 and overlaps with the thickness direction of the insulation core board 2, the insulation core board 2 will only be compressed within a small range during the tightening process of the tension bolt 6. The spacer block 4 mainly bears the tensioning force of the tension bolt 6, thus preventing the insulation core board 2 from being further compressed, thereby ensuring the consistency of the total thickness of the exterior wall panel.

[0045] In one specific implementation of this embodiment, such as Figures 2-4 As shown, the spacer block 4 has a cylindrical body 401. A bolt through hole 403 for the tension bolt 6 is provided in the middle of the spacer block 401. Guide chamfers 405 are provided at both ends of the spacer block 401.

[0046] Specifically, such as Figures 2-4 As shown, the top of the spacer block body 401 is configured as a top platform 402 with an increased diameter, and a stepped clearance hole 201 is opened on the large side of the top of the corresponding insulation core board 2. The bottom edge of the top platform 402 is also configured as a guide chamfer 405.

[0047] By adding a guide chamfer 405, it is easier to insert the spacer block 4 into the clearance hole 201; by adding a top platform 402, the spacer block 4 can be inserted into the clearance hole 201 before the thermal insulation core board 2 is composited on the outer leaf plate 1, so as to prevent the spacer block 4 from coming out of the bottom of the clearance hole 201 during the conveying of the thermal insulation core board 2.

[0048] In one specific embodiment of this example, multiple recesses 404 are respectively provided on the two end faces of the spacer block 4.

[0049] By adding recesses 404, the adhesive in the adhesive layer 5 can be contained, increasing the bonding area and improving the bonding strength.

[0050] In summary, this utility model of an anti-fall-off sandwich insulated exterior wall panel improves its strength by using autoclaved aerated concrete (AAC) panels for both the outer leaf plate 1 and the inner leaf plate 3, and allows for thickness-direction tensioning and anchoring using tie bolts 6. The use of tie bolts 6 ensures high connection strength and reduces the likelihood of detachment. Furthermore, the use of hot-dip galvanized tie bolts 6 and large round washers for anchoring prevents corrosion from rainwater. The countersunk holes accommodate bolt heads and nuts without affecting the construction of the interior and exterior finishing layers. The addition of a decorative layer 7 on the outer wall of the outer leaf plate 1 allows for simultaneous exterior wall decoration during the installation of the prefabricated wall structure, requiring only grouting and significantly shortening the construction period. By adding a spacer block 4 that is fitted onto the tension bolt 6 and overlaps with the thickness direction of the insulation core board 2, the insulation core board 2 will only be compressed within a small range during the tightening of the tension bolt 6. The spacer block 4 mainly bears the anchoring force of the tension bolt 6, preventing the insulation core board 2 from being further compressed, thus ensuring the consistency of the total thickness of the exterior wall panel. The addition of a guide chamfer 405 facilitates the insertion of the spacer block 4 into the clearance hole 201; the addition of a top platform 402 allows the spacer block 4 to be inserted into the clearance hole 201 before the insulation core board 2 is laminated onto the outer leaf plate 1, preventing the spacer block 4 from coming out of the bottom of the clearance hole 201 during the transport of the insulation core board 2. The addition of a recess 404 allows for the containment of the adhesive in the adhesive layer 5, increasing the bonding area and improving the bonding strength.

[0051] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A type of anti-fall-off sandwich insulated exterior wall panel, characterized in that, It includes an outer leaf plate (1), an insulation core plate (2), and an inner leaf plate (3) stacked together from the outside to the inside. The outer leaf plate (1) and the inner leaf plate (3) are both made of autoclaved aerated concrete and are respectively provided with a steel grid frame one (101) and a steel grid frame two (301). A tension bolt (6) is provided between the outer leaf plate (1) and the inner leaf plate (3). Multiple tension bolts (6) are evenly arranged along the large surface of the outer leaf plate (1).

2. The anti-fall-off sandwich insulated exterior wall panel according to claim 1, characterized in that: The tensioning bolt (6) is specifically made of high-strength galvanized bolt, and the outer wall of the outer leaf plate (1) and the inner leaf plate (3) is provided with countersunk holes at the bolt head and nut of the tensioning bolt (6).

3. The anti-fall-off sandwich insulation exterior wall panel according to claim 2, characterized in that: Large round washers are provided at both the bolt head and nut of the tension bolt (6).

4. The anti-fall-off sandwich insulated exterior wall panel according to claim 1, characterized in that: The insulation core board (2) is specifically made of any one of extruded polystyrene board, graphite extruded polystyrene board, polystyrene board, graphite polystyrene board, rock wool board and polyurethane insulation board.

5. The anti-fall-off sandwich insulated exterior wall panel according to claim 1, characterized in that: The insulation core board (2) is bonded to the outer leaf plate (1) and the inner leaf plate (3) on both sides by adhesive layers (5).

6. The anti-fall-off sandwich insulated exterior wall panel according to claim 1, characterized in that: A decorative layer (7) is also provided on the outer wall of the outer leaf plate (1).

7. The anti-fall-off sandwich insulated exterior wall panel according to claim 5, characterized in that: It also includes spacer blocks (4), the thickness of which is adapted to the thickness of the insulation core board (2), and the strength of which is greater than that of the insulation core board (2); the number of spacer blocks (4) is the same as that of the tension bolts (6) and they are set one-to-one; the spacer blocks (4) are sleeved on the tension bolts (6); and the insulation core board (2) has clearance holes (201) for installing the spacer blocks (4).

8. The anti-fall-off sandwich insulated exterior wall panel according to claim 7, characterized in that: The spacer block (4) has a cylindrical body (401) with a bolt through hole (403) for the tension bolt (6) in the middle and guide chamfers (405) at both ends.

9. The anti-fall-off sandwich insulated exterior wall panel according to claim 8, characterized in that: The top of the spacer block body (401) is configured as a top platform (402) with an increased diameter, and the corresponding heat insulation core board (2) has a stepped relief hole (201) on its top large side.

10. The anti-fall-off sandwich insulated exterior wall panel according to claim 9, characterized in that: Multiple recesses (404) are respectively provided on the two end faces of the spacer block (4).

Images