Double-layer ACC external wall panel and mounting method

Abstract

The invention relates to a double-layer ACC external wall panel and an installation method, the double-layer ACC external wall panel comprises a first panel body and a second panel body, the first panel body is provided with a three-face convex frame, the first panel body is fixed with an embedded part embedded in a wall body through a first connecting piece, and then the second panel body is fixed with the first panel body through a second connecting piece, so that the ACC external wall panel is preliminarily fixed; the first plate body and the second plate body are fixed through the second connecting piece, the second connecting piece is fixed in a screw and gluing mode, and after preliminary fixing, the second plate body penetrates through the second plate body and the first plate body through the third connecting piece to be connected with the embedded part. According to the double-layer ACC external wall panel, the connecting stability between the second plate body and the wall body and between the first plate body and the wall body can be further stabilized, so that the pressure of the second plate body on the first plate body is transferred into the wall body, and a cavity formed by the first plate body and the second plate body can be filled with a heat preservation layer base material, so that the double-layer ACC external wall panel is provided with a heat preservation layer.

Description

Technical Field

[0001] The invention belongs to the technical field of energy-saving panels for building structures, and in particular relates to a double-layer ACC exterior wall panel and an installation method thereof. Background Art

[0002] With the development of building industrialization, more and more companies have begun to develop and produce prefabricated wall panels, breaking down wall panels into multiple modules and processing them into semi-finished products in factories, such as ACC exterior wall panels, which can become finished buildings by just assembling them on site. As labor costs become higher and higher, industrially produced wall panels are not only of good quality and fast in construction, but also cheaper than traditional on-site construction. The existing exterior wall panels have complicated installation steps, especially the installation of exterior walls, which requires temporary support. The exterior wall panels can only be removed after they are firmly installed. In addition, the existing multiple exterior wall panels are produced by composite stacking, with a low thickness of the middle functional layer and poor functional efficiency. In order to solve the above problems, this solution was created. Summary of the invention

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a double-layer ACC exterior wall panel and an installation method, which can produce an exterior wall panel with thermal insulation and is quick to install.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a double-layer ACC exterior wall panel, comprising a first plate body and a second plate body, the first plate body and the second plate body have the same shape, the first plate body has a convex frame extending continuously outward on the three sides of the outer periphery, the convex frame comprises two vertical parts and a transverse part, the transverse part is located at the bottom of the vertical part, and the two vertical parts are located on both sides of the transverse part;

[0005] The vertical portion and the transverse portion are provided with a first connecting hole corresponding to the connection point of the embedded part, the vertical portion and the transverse portion are provided with a second connecting hole, the second plate body is provided with a third connecting hole corresponding to the second connecting hole, the first plate body and the second plate body are formed with corresponding first through holes and fourth connecting holes, the convex frame is fixed to the embedded part through the first connecting part passing through the first connecting hole, the second plate body is connected to the first plate body by extending into the second connecting hole through the second connecting part through the third connecting hole, and the second plate body is connected to the embedded part by passing through the fourth connecting hole and the first through hole through the third connecting part; the cavity formed by the cooperation of the first plate body and the second plate body is used to fill the thermal insulation layer substrate.

[0006] Furthermore, the first connecting member and the third connecting member are both expansion screws.

[0007] Furthermore, the second connecting member is a screw, and when the second connecting member is connected to the second connecting hole, the second connecting hole is filled with foam.

[0008] Furthermore, the double-layer ACC exterior wall panel also includes an embedded positioning piece, an insertion column is provided on the back of the first plate body, the end face of the insertion column is a first inclined surface gradually inclined upward from left to right, the surface of the embedded positioning piece has an insertion hole, a latch hole is provided above the insertion hole, the latch hole and the insertion hole are connected, an insertion block is provided in the latch hole, the insertion block is slidably connected in the latch hole, the insertion hole has a second inclined surface facing the opening of the insertion hole, the second inclined surface is matched with the first inclined surface, a limiting groove is provided on the upper end of the peripheral surface of the insertion column, and the limiting groove is matched with the lower end of the insertion block.

[0009] Furthermore, a frame hole is formed in the middle of the first plate body and the second plate body, and a closed-loop surrounding frame is formed on the periphery of the frame hole of the first plate body, and the height of the surrounding frame is the same as the height of the convex frame.

[0010] A method for installing a double-layer ACC exterior wall panel comprises the following steps:

[0011] S1. embedding embedded parts on the wall and leveling the surfaces of multiple embedded parts;

[0012] S2. Clean and polish the protrusions on the wall that are higher than the surface of the embedded parts;

[0013] S3, lifting the first plate body, aligning the first connecting hole with the embedded part, inserting the first connecting part, and connecting the first connecting part with the embedded part to fix the first plate body;

[0014] S4, injecting foam glue into the second connecting hole, lifting the second plate body so that the third connecting hole is aligned with the second connecting hole, injecting the second connecting piece, and waiting for the foam glue to solidify to fix the second plate body;

[0015] S5, the third connecting member passes through the fourth connecting hole and the first through hole and is screwed into the wall embedded member to achieve secondary fixation of the second plate;

[0016] S6. Check whether there is a large gap after the first plate body and the second plate body are connected. If there is a large gap, seal it with a sealing material;

[0017] S7, using a plate body to seal the upper opening of the chamber formed by the first plate body and the second plate body, opening a material inlet on the plate body, and filling the material inlet with polyurethane;

[0018] S8. After the polyurethane is cured, the board body is removed to form a double-layer ACC exterior wall board with an insulation layer.

[0019] A double-layer ACC exterior wall panel and installation method, comprising the following steps:

[0020] S1. embedding embedded parts and embedded positioning parts on the wall and leveling the surfaces of multiple embedded parts and embedded positioning parts;

[0021] S2. Clean and polish the wall protrusions that are higher than the surface of the embedded parts and embedded positioning parts;

[0022] S3, lifting the first plate body, aligning the insertion column on the back of the first plate body with the insertion hole and inserting it, the insertion block is received by the insertion column and moves upward to extend into the latch hole, until the insertion block corresponds to the limiting groove, and the insertion block is inserted into the limiting groove to achieve preliminary positioning;

[0023] S5, inserting the first connecting member into the first connecting hole, connecting the first connecting member to the embedded member, and fixing the first plate body;

[0024] S6, injecting foam glue into the second connecting hole, lifting the second plate body so that the third connecting hole is aligned with the second connecting hole, injecting the second connecting piece, and waiting for the foam glue to solidify to fix the second plate body;

[0025] S7, the third connecting member passes through the fourth connecting hole and the first through hole and is screwed into the wall embedded member to achieve secondary fixation of the second plate;

[0026] S8. Check whether there is a large gap after the first plate body and the second plate body are connected. If there is a large gap, seal it with a sealing material;

[0027] S9, using a plate body to seal the upper opening of the chamber formed by the first plate body and the second plate body, opening a material inlet on the plate body, and filling the material inlet with polyurethane;

[0028] S10, after the polyurethane is cured, the board body is removed to form a double-layer ACC exterior wall board with a thermal insulation layer.

[0029] Furthermore, the embedded depth of the embedded part is at least thirty times the diameter of the first connecting part.

[0030] Furthermore, when filling polyurethane, spray it in the cylinder for 5-30 seconds in advance to observe whether the polyurethane foaming is abnormal; after confirming that there is no abnormality, pour the first plate and the second plate to form 40% of the chamber volume, wait for one day for foaming, observe the foaming situation, and if there is no abnormality in the foaming, pour the first plate and the second plate to form 40% of the chamber volume.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. In the present invention, the double-layer ACC outer wall is divided into two parts, including a first plate and a second plate. The first plate is provided with a three-sided convex frame. The first plate is fixed to the embedded parts embedded in the wall through a first connecting piece, and then the second plate is fixed to the first plate through a second connecting piece to achieve the preliminary fixation of the ACC outer wall panel. The existing outer wall panel has a large weight as a whole, and the hanger required to be adapted has a large traction force. The heavy outer wall panel has a large stress concentration, which will cause a large safety hazard during the installation process. Therefore, the above problems can be avoided by fixing the first plate and the second plate through a second connecting piece. The first plate is fixed with a third connecting piece, and the second connecting piece is fixed with screws and glue. Because the connection strength of screw fixation alone is insufficient, the use of expansion screws for fixed connection will cause cracking of the plate body. After preliminary fixation, the second plate body is also connected to the embedded parts through the third connecting piece passing through the second plate body and the first plate body. In this way, the stability of the connection between the second plate body and the first plate body and the wall can be further stabilized, thereby transferring the pressure of the second plate body on the first plate body to the wall body, and the cavity formed by the first plate body and the second plate body can also be filled with the insulation layer substrate to make the double-layer ACC exterior wall panel have an insulation layer.

[0033] 2. This solution provides two installation methods for ACC exterior walls. When pouring polyurethane, it is divided into two pourings. The first pouring is to detect the foaming quality and see if foaming exists. The second pouring foaming is to allow the polyurethane to fill the inner cavity between the first plate body and the second plate body. The two pouring volumes are 80% of the inner cavity of the first plate body and the second plate body. This can release the tension generated during the polyurethane foaming process while ensuring the formation of the insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the double-layer ACC exterior wall panel in Example 1 of the present invention;

[0035] Figure 2 It is a front view structural schematic diagram of the first plate body in Example 1 of the present invention;

[0036] Figure 3 is a schematic cross-sectional structure diagram of the connection position between the first connecting member and the second connecting member in Example 1 of the present invention;

[0037] Figure 4 This is a schematic diagram of the cross-sectional structure of the middle part of the double-layer ACC exterior wall panel in Example 1 of the present invention;

[0038] Figure 5 This is a schematic diagram of the cross-sectional structure of the connection between the first connecting member and the third connecting member in Example 1 of the present invention after the cavity is filled with polyurethane;

[0039] Figure 6 It is a schematic cross-sectional structure diagram of the connection between the insertion column and the embedded positioning member in Example 2 of the present invention;

[0040] Figure 7 It is a schematic diagram of the three-dimensional structure of the double-layer ACC exterior wall panel in Example 3 of the present invention;

[0041] Figure 8 It is a front view structural schematic diagram of the first plate body in Example 3 of the present invention;

[0042] Fig. 9 is a schematic cross-sectional structure diagram of the connection position of the first connecting member and the second connecting member in Example 3 of the present invention;

[0043] Fig.10 This is a schematic diagram of the cross-sectional structure of the middle part of the double-layer ACC exterior wall panel in Example 3 of the present invention;

[0044] Fig.11 This is a schematic diagram of the cross-sectional structure of the connection between the first connecting member and the third connecting member in Example 3 of the present invention after the cavity is filled with polyurethane.

[0045] Markings in the figure: 1. first plate body; 11. first connecting hole; 12. second connecting hole; 13. first through hole; 14. insertion column; 15. convex frame; 16. surrounding frame; 2. second plate body; 21. third connecting hole; 22. fourth connecting hole; 3. chamber; 4. first connecting member; 5. second connecting member; 6. third connecting member; 7. embedded member; 8. embedded positioning member; 81. insertion hole; 82. pin hole; 83. insertion block; 9. polyurethane. DETAILED DESCRIPTION

[0046] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0047] Example 1

[0048] like Figure 1-Figure 5 As shown, this embodiment provides a double-layer ACC exterior wall panel, including embedded parts 7, a first plate body 1 and a second plate body 2.

[0049] The vertical projections of the first plate body 1 and the second plate body 2 are in the same shape. The first plate body 1 has a convex frame 15 extending continuously outward on the periphery of the outer circumference. The convex frame 15 includes two vertical parts and a transverse part. The transverse part is located at the bottom of the vertical part, and the two vertical parts are located on both sides of the transverse part. The vertical part and the transverse part are provided with first connection holes 11 corresponding to the connection of the embedded part 7. In this embodiment, the number of the first connection holes 11 on the vertical part and the transverse part is three and they are arranged at intervals. The vertical part and the transverse part are provided with second connection holes 12. In this embodiment, the number of the second connection holes 12 on the vertical part and the transverse part is two, and the second connection holes 12 are located between adjacent first connection holes 11. The first plate body 1 is also provided with two first through holes 13, and the first through holes 13 are located between the convex frames 15. The second plate body 2 is formed with a third connection hole 21 corresponding to the second connection hole 12, and a fourth connection hole 22 corresponding to the first through hole 13; the first connection hole 11, the third connection hole 21 and the fourth connection hole 22 are countersunk holes.

[0050] The convex frame 15 is fixed to the embedded part 7 through the first connecting member 4 through the first connecting hole 11, and the first connecting member 4 is an expansion screw; the second plate body 2 is connected to the embedded part 7 through the third connecting member 6 through the fourth connecting hole 22 and the first through hole 13, and the third connecting member 6 is an expansion screw. The second plate body 2 is connected to the first plate body 1 by the second connecting member 5 extending into the second connecting hole 12 through the third connecting hole 21, and the second connecting member 5 is a screw. When the second connecting member 5 is connected to the second connecting hole 12, the second connecting hole 12 is filled with foam. After the first plate body 2 is connected, a chamber 3 is formed, and the chamber 3 is used to fill the insulation layer substrate, and the insulation layer substrate is selected from polyurethane 9.

[0051] The embedded part 7 is provided with fixing holes for matching with the first connecting part 4 and the third connecting part 6 . The embedded part 7 is used to be buried in the wall surface. The embedded depth of the embedded part 7 is at least thirty times the diameter of the first connecting part 4 .

[0052] This embodiment also provides a method for installing a double-layer ACC exterior wall panel, comprising the following steps:

[0053] S1. Embed embedded parts 7 on the wall and level the surfaces of multiple embedded parts 7; the specific steps are as follows: first, apply a mortar leveling layer according to the elevation to make it reach a certain strength. Before the exterior wall panels are in place, plain cement slurry should be poured to make the bonding surface tight and the elevation accurate. Then, an installation groove is opened at the designated position and the embedded parts 7 are embedded.

[0054] S2, cleaning and grinding the wall protrusions that are higher than the surface of the embedded part 7; the specific steps are as follows: using a scraper or a grinder, scrape or grind the protrusions on the wall surface after leveling.

[0055] S3, lift the first plate body 1, align the first connecting hole 11 with the embedded part 7, drive the first connecting part 4, and connect the first connecting part 4 with the embedded part 7 to fix the first plate body 1; the specific steps are as follows: fix the first plate body 1 through the lifting ring, then lift the first plate body 1 through the crane, move the first plate body 1 to the specified position, so that the first connecting hole 11 corresponds to the fixing hole on the embedded part 7, drive the expansion screw to fix the first plate body 1 on the wall, and remove the lifting ring;

[0056] S4. Inject foam glue into the second connecting hole 12, lift the second plate body 2 so that the third connecting hole 21 is aligned with the second connecting hole 12, insert the second connecting piece 5, and wait for the foam glue to solidify to fix the second plate body 2. The specific steps are as follows: inject foam glue into the second connecting hole 12 from the glue cavity, lift the second plate body 2 so that the third connecting hole 21 is aligned with the second connecting hole 12, screw in the second connecting piece 5, and let it stand for 8-12 hours to wait for the foam glue to solidify.

[0057] S5, the third connecting member 6 passes through the fourth connecting hole 22 and the first through hole 13 and is screwed into the wall embedded part 7 to achieve secondary fixation of the second plate body 2; the specific steps are as follows: while waiting for the foam glue to solidify, a special expansion screw is passed through the fourth connecting hole 22 and the first through hole 13 and driven into the fixing hole of the embedded part 7; the expansion screw in this step includes a countersunk head, a connecting part and a threaded part, and the countersunk head, the connecting part and the threaded part are arranged from left to right, and the connecting part is located in the chamber 3 formed by the first plate body 1 and the second plate body 2.

[0058] S6. Check whether there is a large gap after the first plate body 1 and the second plate body 2 are connected. If there is a large gap, seal it with a sealing material. The specific steps are as follows: Check by observation whether there is a large gap after the first plate body 1 and the second plate body 2 are connected. If there is a large gap, seal it with a sealing material. The sealing material should preferably be a single-component polyurethane 9 coated gap. After the sealing material is cured, proceed to the next step.

[0059] S7, use a plate body to seal the first plate body 1 and the second plate body 2 to form an upper opening of the chamber 3, open a feed port on the plate body, and fill the feed port with polyurethane 9; the specific steps are as follows: two pulling holes are opened on the plate body, and two bolts are arranged on the side of the plate body facing the chamber 3, and the two bolt heads are located in the chamber 3, and a pulling plate is clamped at the position of the two bolt heads, and the pulling plate has two arc-shaped pits, and the two arc-shaped pits are matched with the bottom of the circumference of the two third connecting members 6, and the pulling plate is located below the two third connecting members 6 and the arc-shaped pits and the third connecting members 6 are in contact, and the bolts are screwed with nuts after passing through the two pulling holes, and tightened by the nuts, Make the plate body fit tightly to the upper opening of the chamber 3, and then fill it. When filling the polyurethane 9, spray it in the cylinder for 5-30 seconds in advance, and observe whether the foaming of the polyurethane 9 is abnormal; after confirming that there is no abnormality, pour the first plate body 1 and the second plate body 2 to form 40% of the volume of the chamber 3, wait for one day for foaming, observe the foaming situation, and if there is no abnormality in the foaming, pour the first plate body 1 and the second plate body 2 to form 40% of the volume of the chamber 3. The two pouring volumes are 80% of the inner cavity of the first plate body 1 and the second plate body 2. This can release the tension generated during the foaming process of the polyurethane 9 while ensuring the formation of the thermal insulation layer.

[0060] S8. After the polyurethane 9 is cured, the board is removed to form a double-layer ACC exterior wall panel with an insulation layer; the specific steps are as follows: after static foaming for 24 hours, loosen the nuts and remove the board, and directly insert the bolts and pull plates into the chamber 3.

[0061] S9. After the installation is completed, the surface of the second plate body 2 needs to be cleaned and holes (such as the openings of the third connection hole 21 and the fourth connection hole 22) need to be filled.

[0062] Example 2

[0063] like Figure 6As shown, the difference between this embodiment and embodiment 1 is that a double-layer ACC exterior wall panel further includes an embedded positioning member 8, and the embedded depth of the embedded member 7 is at least thirty times the diameter of the first connecting member 4. An insertion column 14 is arranged on the back of the first plate body 1. The insertion column 14 is a prism. In this embodiment, a quadrangular prism is adopted. The end face of the insertion column 14 is a first inclined plane which gradually tilts upward from left to right. The angle between the first inclined plane and the bottom face of the insertion column 14 is 25°-35°. The surface of the embedded positioning member 8 has an insertion hole 81. A latch hole 82 is arranged above the insertion hole 81. The latch hole 82 is connected to the insertion hole 81. An insertion block 83 is arranged in the latch hole 82. The insertion block 83 is slidably connected in the latch hole 82. The opening side of the insertion hole facing the insertion hole 81 is a second inclined plane, which is matched with the first inclined plane. A limiting groove is arranged on the upper end of the peripheral surface of the insertion column 14, and the limiting groove is matched with the lower end of the insertion block 83. Preferably, the angle between the first inclined plane and the bottom face of the insertion column 14 is 25°-35°. After the insertion column 14 at this angle is inserted, it is easier to lift the insertion block 83. The role of the insertion column 14 and the insertion hole 81 is to perform preliminary positioning, and after the first connecting member 4 is connected, double fixation of the first plate body 1 is achieved.

[0064] This embodiment also provides a method for installing a double-layer ACC exterior wall panel, comprising the following steps:

[0065] S1, embedding embedded parts 7 and embedded positioning parts 8 on the wall and leveling the surfaces of multiple embedded parts 7 and embedded positioning parts 8; the specific steps are the same as step S1 of embodiment 1.

[0066] S2, cleaning and polishing the wall protrusions that are higher than the surfaces of the embedded parts 7 and the embedded positioning parts 8; the specific steps are the same as step S2 of embodiment 1.

[0067] S3, lift the first plate body 1, align the insertion column 14 on the back of the first plate body 1 with the insertion hole 81 and insert it, the insertion block 83 receives the insertion column 14 and moves upward to extend into the latch hole 82, until the insertion block 83 corresponds to the limiting groove, and the insertion block 83 is inserted into the limiting groove to achieve preliminary positioning; the specific steps are as follows: fix the first plate body 1 by the lifting ring, and then lift the first plate body 1 by the crane, move the first plate body 1 to the specified position, so that the first connecting hole 1 1 corresponds to the fixing hole on the embedded part 7, the insertion column 14 corresponds to the insertion hole 81, the insertion column 14 is inserted into the insertion hole 81, the first inclined surface of the insertion column 14 is adapted to the second inclined surface of the insertion block 83, and the insertion of the insertion column 14 will drive the insertion block 83 to move upward until the insertion block 83 is inserted into the latch hole 82, until the insertion block 83 corresponds to the limiting groove, and the insertion block 83 is stuck in the limiting groove. At this time, the insertion column 14 is horizontally limited, and the lifting ring is removed.

[0068] S5. Insert the first connecting member 4 into the first connecting hole 11, and connect the first connecting member 4 to the embedded member 7 to fix the first plate body 1. The specific steps are as follows: insert an expansion screw into the first connecting hole 11 to fix the first plate body 1 to the wall.

[0069] S6. Inject foam glue into the second connecting hole 12, lift the second plate body 2 so that its third connecting hole 21 is aligned with the second connecting hole 12, insert the second connecting piece 5, wait for the foam glue to solidify, and fix the second plate body 2; the specific steps are the same as step S4 in Example 1.

[0070] S7, the third connecting member 6 passes through the fourth connecting hole 22 and the first through hole 13 and is screwed into the wall embedded member 7 to achieve secondary fixation of the second plate body 2; the specific steps are the same as step S5 in Example 1.

[0071] S8, check whether there is a large gap after the first plate body 1 and the second plate body 2 are connected, and if there is a large gap, seal it with a sealing material; the specific steps are the same as step S6 in embodiment 1.

[0072] S9, using a plate body to seal the first plate body 1 and the second plate body 2 to form an upper opening of the chamber 3, opening a feed port on the plate body, and filling the feed port with polyurethane 9; the specific steps are the same as step S7 in Example 1.

[0073] S10, after the polyurethane 9 is cured, the board body is removed to form a double-layer ACC exterior wall board with a thermal insulation layer; the specific steps are the same as step S8 in Example 1.

[0074] S11. After the installation is completed, the surface of the second plate body 2 needs to be cleaned and holes (such as the openings of the third connection hole 21 and the fourth connection hole 22) need to be filled.

[0075] Example 3

[0076] like Figure 7-Figure 11 As shown, the difference between this embodiment and embodiment 1 is that a framing hole is formed in the middle of the first plate body 1 and the second plate body 2, and a closed-loop frame 16 is formed on the periphery of the framing hole of the first plate body 1. The height of the frame 16 is the same as that of the convex frame 15. The ACC exterior wall panel in this embodiment is used to adapt to an exterior wall with windows.

[0077] The installation method of this embodiment is the same as that of Embodiment 1 and will not be described again here.

[0078] In this solution, the double-layer ACC outer wall is divided into two parts, including a first plate body 1 and a second plate body 2. The first plate body 1 is provided with a three-sided convex frame 15. The first plate body 1 is fixed to the embedded part 7 embedded in the wall through the first connecting member 4, and then the second plate body 2 is fixed to the first plate body 1 through the second connecting member 5 to achieve the initial fixation of the ACC outer wall panel. The existing outer wall panel has a large weight as a whole, and the hanger required to be adapted has a large traction force. The heavy outer wall panel has a large stress concentration, which will cause a large safety hazard during the installation process. Therefore, the above problems can be avoided by fixing it separately. The first plate body 1 and the second plate body 2 are connected by the second connecting member 5. The second connecting member 5 is fixed by screws and gluing, because the connection strength of screw fixation alone is insufficient, and the use of expansion screws for fixed connection will cause cracking of the board; after preliminary fixation, the second board 2 is also connected to the embedded member 7 through the third connecting member 6 passing through the second board 2 and the first board 1. In this way, the stability of the connection between the second board 2 and the first board 1 and the wall can be further stabilized, thereby transferring the pressure of the second board 2 on the first board 1 to the wall, and the cavity 3 formed by the first board 1 and the second board 2 can also be filled with the insulation layer base material, so that the double-layer ACC exterior wall panel has an insulation layer.

[0079] Moreover, the ACC exterior wall panels supported in this scheme have the following advantages in terms of thermal insulation performance compared with the existing ACC walls: the polyurethane 9 in this scheme has good thermal insulation performance and low thermal conductivity (0.02), and the liquid polyurethane 9 repairs the gaps in the construction process, and the exterior wall forms a complete closed insulation layer; the existing aerated blocks and rock wool exterior wall panels: the rock wool has poor thermal insulation performance and high thermal conductivity (0.04), and the walls are composed of small pieces of rock wool boards and aerated blocks, and there are a lot of gaps between the blocks; the insulation is connected with the wall anchor bolts; the traditional wire mesh structure: the EPS has poor thermal insulation performance and high thermal conductivity (0.039), and there are a lot of connectors between the inner wall and the outer wall.

[0080] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A double-layer ACC exterior wall panel, characterized by: It comprises a first plate body and a second plate body, the first plate body and the second plate body have the same shape, the first plate body has a convex frame extending continuously outward on the three sides of the outer periphery, the convex frame comprises two vertical parts and a transverse part, the transverse part is located at the bottom of the vertical part, and the two vertical parts are located on both sides of the transverse part; The vertical portion and the transverse portion are provided with a first connecting hole corresponding to the connection point of the embedded part, the vertical portion and the transverse portion are provided with a second connecting hole, the second plate body is provided with a third connecting hole corresponding to the second connecting hole, the first plate body and the second plate body are formed with corresponding first through holes and fourth connecting holes, the convex frame is fixed to the embedded part through the first connecting part passing through the first connecting hole, the second plate body is connected to the first plate body by extending into the second connecting hole through the second connecting part through the third connecting hole, and the second plate body is connected to the embedded part by passing through the fourth connecting hole and the first through hole through the third connecting part; the cavity formed by the cooperation of the first plate body and the second plate body is used to fill the thermal insulation layer substrate.

2. A double-layer ACC exterior wall panel according to claim 1, characterized in that: The first connection member and the third connection member are both expansion screws.

3. The double-layer ACC exterior wall panel according to claim 1, characterized in that: The second connecting member is a screw, and when the second connecting member is connected to the second connecting hole, the second connecting hole is filled with foam glue.

4. The double-layer ACC exterior wall panel according to claim 1, characterized in that: The double-layer ACC exterior wall panel also includes an embedded positioning piece, an insertion column is arranged on the back of the first plate body, the end face of the insertion column is a first inclined surface gradually inclined upward from left to right, the surface of the embedded positioning piece has an insertion hole, a latch hole is arranged above the insertion hole, the latch hole and the insertion hole are connected, an insertion block is arranged in the latch hole, the insertion block is slidably connected in the latch hole, the insertion hole has a second inclined surface facing the opening of the insertion hole, the second inclined surface is matched with the first inclined surface, a limiting groove is arranged on the upper end of the peripheral surface of the insertion column, and the limiting groove is matched with the lower end of the insertion block.

5. The double-layer ACC exterior wall panel according to claim 1, characterized in that: A frame hole is formed in the middle of the first plate body and the second plate body, and a closed-loop frame is formed around the outer periphery of the frame hole of the first plate body, and the height of the frame is the same as the height of the convex frame.

6. A method for installing the double-layer ACC exterior wall panel according to claim 1, characterized in that: The following steps are involved: S1. embedding embedded parts on the wall and leveling the surfaces of multiple embedded parts; S2. Clean and polish the protrusions on the wall that are higher than the surface of the embedded parts; S3, lifting the first plate body, aligning the first connecting hole with the embedded part, inserting the first connecting part, and connecting the first connecting part with the embedded part to fix the first plate body; S4, injecting foam glue into the second connecting hole, lifting the second plate body so that the third connecting hole is aligned with the second connecting hole, injecting the second connecting piece, and waiting for the foam glue to solidify to fix the second plate body; S5, the third connecting member passes through the fourth connecting hole and the first through hole and is screwed into the wall embedded member to achieve secondary fixation of the second plate; S6. Check whether there is a large gap after the first plate body and the second plate body are connected. If there is a large gap, seal it with a sealing material; S7, using a plate body to seal the upper opening of the chamber formed by the first plate body and the second plate body, opening a material inlet on the plate body, and filling the material inlet with polyurethane; S8. After the polyurethane is cured, the board body is removed to form a double-layer ACC exterior wall board with an insulation layer.

7. A method for installing the double-layer ACC exterior wall panel according to claim 4, characterized in that: The following steps are involved: S1. embedding embedded parts and embedded positioning parts on the wall and leveling the surfaces of multiple embedded parts and embedded positioning parts; S2. Clean and polish the wall protrusions that are higher than the surface of the embedded parts and embedded positioning parts; S3, lifting the first plate body, aligning the insertion column on the back of the first plate body with the insertion hole and inserting it, the insertion block is received by the insertion column and moves upward to extend into the latch hole, until the insertion block corresponds to the limiting groove, and the insertion block is inserted into the limiting groove to achieve preliminary positioning; S5, inserting the first connecting member into the first connecting hole, connecting the first connecting member to the embedded member, and fixing the first plate body; S6, injecting foam glue into the second connecting hole, lifting the second plate body so that the third connecting hole is aligned with the second connecting hole, injecting the second connecting piece, and waiting for the foam glue to solidify to fix the second plate body; S7, the third connecting member passes through the fourth connecting hole and the first through hole and is screwed into the wall embedded member to achieve secondary fixation of the second plate; S8. Check whether there is a large gap after the first plate body and the second plate body are connected. If there is a large gap, seal it with a sealing material; S9, using a plate body to seal the upper opening of the chamber formed by the first plate body and the second plate body, opening a material inlet on the plate body, and filling the material inlet with polyurethane; S10, after the polyurethane is cured, the board body is removed to form a double-layer ACC exterior wall board with a thermal insulation layer.

8. A method for installing a double-layer ACC exterior wall panel according to claim 6 or 7, characterized in that: The embedded depth of the embedded part is at least thirty times the diameter of the first connecting part.

9. A method for installing a double-layer ACC exterior wall panel according to claim 6 or 7, characterized in that: When filling polyurethane, spray it in the cylinder for 5-30 seconds in advance and observe whether the polyurethane foaming is abnormal; after confirming that there is no abnormality, pour the first plate and the second plate to form 40% of the chamber volume, wait for one day for foaming, observe the foaming situation, and if there is no abnormality in the foaming, pour the first plate and the second plate to form 40% of the chamber volume.

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