Building thermal insulation wall and thermal insulation method for building

Abstract

The invention relates to the technical field of thermal insulation walls, and discloses a building thermal insulation wall and a thermal insulation method for buildings, the building thermal insulation wall comprises a thermal insulation board, edge expansion nails and center expansion nails, a keel is fixedly arranged in the thermal insulation board, a plurality of buckles extending to the top of the thermal insulation board are installed on the keel, and the buckles are used for reinforcing an anti-crack layer. By arranging the keel, the edge expansion nail, the center expansion nail, the buckle and the clamping assembly, fastening of the center of the insulation board is achieved through clamping of the clamping assembly and the center expansion nail when the insulation board is installed, compared with the mode that the center of the insulation board is directly fixed through the expansion nail, the situation that the insulation board is damaged by drilling is avoided, and the water seepage probability of the insulation board is reduced; in addition, the clamping assembly can further drive the buckle to fasten the anti-crack layer on the heat preservation plate, the compactness of connection between the anti-crack layer and the heat preservation plate is improved, follow-up falling is avoided, and the safety is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal insulation walls, and specifically to a building thermal insulation wall and a thermal insulation method for buildings. Background Art

[0002] Thermal insulation walls can effectively control the temperature difference between indoors and outdoors, improve the comfort of occupants, and can also save energy and reduce energy consumption. They are a common building energy-saving measure. The structure of existing thermal insulation walls mainly includes a thermal insulation layer, an anti-cracking layer, and a waterproof layer from the inside to the outside. Among them, the thermal insulation layer is fixed on the exterior wall by thermal insulation nails through thermal insulation boards. The anti-cracking layer is composed of sand ash and fiberglass mesh and adhered to the thermal insulation board. The waterproof layer is composed of spraying materials or other decorative boards. There are certain problems in actual use: First, when the thermal insulation board is fixed with thermal insulation nails, in addition to drilling holes for installation in the connection gaps between adjacent thermal insulation boards, it is also necessary to drill holes in the center of the thermal insulation board. However, the sealing of the through holes on the thermal insulation board is difficult. When water seeps here, it is easy to enter the bonding between the thermal insulation board and the wall surface, increasing the risk of the thermal insulation layer falling off and posing a great safety hazard. Second, the existing anti-cracking layer is adhered to the thermal insulation board with sand ash and is extremely easy to fall off during aging. The existing wall peeling phenomenon is mainly manifested in the simultaneous peeling of the waterproof layer and the anti-cracking layer, further increasing the safety hazard. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a building thermal insulation wall and a thermal insulation method for buildings, which have the advantages of high safety, etc., and solve the problems that when fixing the thermal insulation board on the existing thermal insulation wall, it is necessary to drill holes in the thermal insulation board, resulting in reduced sealing performance, and at the same time, the connection effect between the anti-cracking layer and the thermal insulation board is poor, and the anti-cracking layer is easy to fall off.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A building thermal insulation wall includes a thermal insulation board, edge expansion nails, and a center expansion nail. A keel is fixedly arranged inside the thermal insulation board. A plurality of buckles extending to the top of the thermal insulation board are installed on the keel. The buckles are used to reinforce the anti-cracking layer. The center expansion nail is fixed on the wall surface and inserted into the keel. A clamping component is installed inside the keel. The clamping component is used to clamp the center expansion nail. The clamping component is also used to drive the buckles to contract. The edge expansion nails are installed at the corners of the thermal insulation board. The edge expansion nails are used to fix the thermal insulation board and drive the clamping component to operate; Before fixing the thermal insulation board, the center expansion nail is fixed on the wall surface in advance. When bonding and fixing the thermal insulation board, the center expansion nail is just inserted into the keel. After bonding and fixing the thermal insulation board, first lay the anti-cracking layer on the thermal insulation board, and then fix the edge expansion nails at the corners of the thermal insulation board. While further fixing the thermal insulation board, the edge expansion nails also drive the clamping component. When the clamping component operates, it clamps the center expansion nail. When the clamping drunkard operates, it also forces the buckles to contract, locking and reinforcing the anti-cracking layer.

[0005] Preferably, the heat preservation board is arranged as a square board, notches are provided at the corners of the heat preservation board, positioning grooves are formed in the top surfaces of the corners of the heat preservation board, the keel is arranged as a hollow cross, and the end parts of the hollow cross respectively extend to the corners of the heat preservation board. A positioning hole is formed in the center of the bottom of the heat preservation board, and the positioning hole extends to the middle of the hollow cross. A plurality of vertical pipes are further fixed to the top of the hollow cross, the top ends of the vertical pipes extend to the top surface of the heat preservation board, and the buckle is installed at the top ends of the vertical pipes.

[0006] Preferably, the central expansion nail includes a central expansion tube and a central bolt matched therewith. A screw hole is provided at the end of the central bolt, a central screw is threadedly connected in the screw hole, and one end of the central screw extends outside the screw hole and is fixed with a conical block.

[0007] Preferably, the edge expansion nail includes an edge expansion tube and an edge bolt matched therewith, and a groove shell is sleeved on the edge bolt.

[0008] Preferably, the clamping component includes a clamping rod and a vertical shaft arranged inside the hollow cross. The clamping rod is slidably connected with the inner wall of the hollow cross. One end of the clamping rod extends to the middle of the hollow cross and is provided with an inclined surface. The vertical shaft is fixed inside the hollow cross. A movable block is movably sleeved on the vertical shaft. A main spring is fixed between the bottom of the movable block and the inner wall of the hollow cross. The top of the movable block is fixedly connected with a touch rod. The touch rod penetrates through the hollow cross and extends into the positioning groove. A connecting rod is arranged between the movable block and the clamping rod, and two ends of the connecting rod are respectively hinged with the clamping rod and the movable block.

[0009] Preferably, the buckle includes a column body inserted into the vertical pipe. Vertical strip-shaped grooves are formed in the side wall of the column body. Vertical guiding grooves are provided on the inner walls of both sides of the vertical strip-shaped grooves. A rotating shaft is arranged in the vertical strip-shaped groove. Two ends of the rotating shaft respectively extend into the two vertical guiding grooves. A clamping needle is fixed on the rotating shaft, and the length of the clamping needle is less than the height of the vertical strip-shaped groove.

[0010] Preferably, a secondary spring is fixed between the bottom end of the column body and the cross-shaped hollow frame. A pull rope is further fixed on the clamping rod, and one end of the pull rope penetrates into the vertical pipe and is fixedly connected with the bottom end of the column body.

[0011] Preferably, an installation shallow groove is provided at the edge of the heat preservation board. Both ends of the installation shallow groove are communicated with the positioning groove. A sealing strip is adhered in the installation shallow groove. The sealing strip includes two flat parts and a V-shaped telescopic part connected between the two flat parts.

[0012] Preferably, a clamping hole is provided at the end of the edge bolt. A shell cover covers the top of the groove shell. A plug rod is fixed at the center of the shell cover, and a head matched with the clamping hole is fixed at the end of the plug rod.

[0013] The present invention also discloses a heat preservation method for buildings, which uses the above-mentioned building heat preservation wall body.

[0014] Compared with the prior art, the present invention provides a building heat preservation wall body and a heat preservation method for buildings, which have the following beneficial effects: 1. For this kind of building heat preservation wall body and the heat preservation method for buildings, by setting the keel, edge expansion nails, central expansion nails, buckles and clamping components, when installing the heat preservation board, the clamping of the clamping component and the central expansion nail realizes the fastening of the center of the heat preservation board. Compared with the method of directly fixing the expansion nail at the center of the heat preservation board, it avoids drilling and damaging the heat preservation board, reduces the probability of water seepage of the heat preservation board, improves safety, and the clamping component can also drive the buckle to fasten the anti-cracking layer on the heat preservation board, improving the tightness of the connection between the anti-cracking layer and the heat preservation board, avoiding subsequent peeling off, and further improving safety.

[0015] 2. For this kind of building heat preservation wall body and the heat preservation method for buildings, by setting the keel, it is beneficial to improve the compressive strength of the heat preservation board and has a longer service life. By setting the clamping component, when the edge expansion nail is installed, it can drive one end of the clamping rod, making the end of the clamping rod move towards the center of the keel, and then making the end of the clamping rod engage with the conical block on the central expansion nail, improving the fastening effect at the center of the heat preservation board. Compared with the prior art, there is no need to drill holes in the heat preservation board, improving the sealing performance of the heat preservation board.

[0016] 3. For this kind of building heat preservation wall body and the heat preservation method for buildings, by setting the sealing strip, it can further seal the joint of the heat preservation board. Combining with the original polyurethane foam glue between the heat preservation boards can achieve double sealing, further improving the waterproof performance. The V-shaped expansion part can also adapt to the expansion and contraction of the heat preservation board. In addition, by setting the shell cover, the shell cover can be clamped and fixed on the edge expansion nail, which is beneficial to pressing and fixing the end of the sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic diagram of a building heat preservation wall body of the present invention; Figure 2 is for the present invention Figure 1 enlarged view of part A; Figure 3 is an exploded view of the structure of the heat preservation board of the present invention; Figure 4 is a cross-sectional view of the heat preservation board of the present invention; Figure 5 is for the present invention Figure 4 enlarged view of part B; Figure 6 is for the present invention Figure 4 enlarged view of part C; Figure 7Explosion structure diagram of the central expansion nail of the present invention; Figure 8 Explosion structure diagram of the edge expansion nail of the present invention; Figure 9 Explosion structure diagram of the buckle of the present invention.

[0018] In the figure: 1, thermal insulation board; 101, installation shallow groove; 2, edge expansion nail; 21, edge expansion tube; 22, edge bolt; 23, groove shell; 24, card hole; 3, central expansion nail; 31, central expansion tube; 32, central bolt; 33, screw hole; 34, central screw; 35, conical block; 4, keel; 41, hollow cross; 42, vertical pipe; 5, buckle; 51, column body; 52, vertical strip groove; 53, vertical guide groove; 54, rotating shaft; 55, card needle; 56, auxiliary spring; 57, pull rope; 6, engaging component; 61, card rod; 62, vertical shaft; 63, movable block; 64, main spring; 65, contact rod; 66, connecting rod; 7, notch; 8, positioning groove; 9, positioning hole; 10, sealing strip; 11, shell cover; 12, inserting rod; 13, end head. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a building thermal insulation wall and a thermal insulation method for buildings.

[0021] Embodiment 1: Please refer to Figures 1-4 , a building thermal insulation wall, including a thermal insulation board 1, an edge expansion nail 2 and a central expansion nail 3. A keel 4 is fixedly arranged inside the thermal insulation board 1. A plurality of buckles 5 extending to the top of the thermal insulation board 1 are installed on the keel 4. The buckles 5 are used for strengthening the anti-cracking layer. The central expansion nail 3 is fixed on the wall surface and inserted into the keel 4. An engaging component 6 is installed inside the keel 4. The engaging component 6 is used for clamping the central expansion nail 3, and the engaging component 6 is also used for driving the buckles 5 to contract. The edge expansion nail 2 is installed at the corner of the thermal insulation board 1. The edge expansion nail 2 is used for fixing the thermal insulation board 1 and driving the engaging component 6 to operate; Before the heat preservation board 1 is fixed, the central expansion nail 3 is pre-fixed on the wall surface. When the heat preservation board 1 is adhesively fixed, the central expansion nail 3 is just inserted into the keel 4. After the heat preservation board 1 is adhesively fixed, a crack-resistant layer is first laid on the heat preservation board 1, and then the edge expansion nail 2 is fixed at the corner of the heat preservation board 1. While the edge expansion nail 2 further fixes the heat preservation board 1, it also drives the engaging component 6. When the engaging component 6 operates, it engages with the central expansion nail 3, and when the engaging drunk operates, it also forces the buckle 5 to contract, locking and reinforcing the crack-resistant layer.

[0022] Among them, the keel 4 is made of plastic material. When installing the central expansion nail 3 and the edge expansion nail 2, holes need to be drilled in the wall in advance. During actual installation, multiple heat preservation boards 1 are arranged in an array, and a 3-mm expansion gap is reserved between adjacent heat preservation boards 1, and polyurethane foam glue is injected into the gap to achieve preliminary sealing. The crack-resistant layer includes a composite form of inner plaster - fiberglass mesh - outer plaster; During use, first drill holes in the wall surface and install the central expansion nail 3. The position of the central expansion nail 3 corresponds to the center of the subsequent heat preservation board 1 to be installed. Then, the heat preservation board 1 is fixed on the wall surface through an adhesive coating. While fixing the heat preservation board 1, the central expansion nail 3 can just be inserted into the center of the heat preservation board 1 until it reaches the keel 4. After that, the inner plaster is first coated on the surface of the heat preservation board 1, and then the fiberglass mesh is laid, and the buckle 5 is passed through the fiberglass mesh. Then, holes are drilled at the corners of the heat preservation board 1 and the edge expansion nail 2 is installed. The edge expansion nail 2 further fixes the heat preservation board 1 and also drives the engaging component 6. When the engaging component 6 operates, the keel 4 in the heat preservation board 1 is engaged and fixed with the central expansion nail 3. At this time, the heat preservation board 1 is fixed not only by adhesion but also by the central expansion nail 3 and the edge expansion nail 2. In addition, when the engaging component 6 operates, it also drives the buckle 5 to contract into the heat preservation board 1. When the buckle 5 contracts, it clamps the fiberglass mesh. The fiberglass mesh is fixed not only by adhesion to the heat preservation board 1 through the plaster but also by the buckle 5; By setting the keel 4, the edge expansion nail 2, the central expansion nail 3, the buckle 5 and the engaging component 6, when installing the heat preservation board 1, the center of the heat preservation board 1 is tightened by the engagement of the engaging component 6 and the central expansion nail 3. Compared with the method of directly fixing the expansion nail at the center of the heat preservation board 1, it avoids drilling and damaging the heat preservation board 1, reduces the probability of water seepage of the heat preservation board 1, improves safety, and the engaging component 6 can also drive the buckle 5 to fasten the crack-resistant layer on the heat preservation board 1, improving the tightness of the connection between the crack-resistant layer and the heat preservation board 1 and avoiding subsequent detachment, further improving safety.

[0023] Embodiment 2: Refer to Figures 1-4, different from the above embodiments, the heat preservation board 1 is set as a square board, notches 7 are arranged at the corners of the heat preservation board 1, positioning grooves 8 are formed in the top surface of the corners of the heat preservation board 1, the keel 4 is set as a hollow cross 41, and the ends of the hollow cross 41 extend to the corners of the heat preservation board 1 respectively. A positioning hole 9 is formed in the center of the bottom of the heat preservation board 1, and the positioning hole 9 extends to the middle of the hollow cross 41. A plurality of vertical pipes 42 are further fixed to the top of the hollow cross 41, the top ends of the vertical pipes 42 extend to the top surface of the heat preservation board 1, the buckle 5 is installed at the top ends of the vertical pipes 42, the central expansion nail 3 includes a central expansion tube 31 and a central bolt 32 matching therewith, a threaded hole 33 is arranged at the end of the central bolt 32, a central screw rod 34 is threadedly connected in the threaded hole 33, one end of the central screw rod 34 extends outside the threaded hole 33 and is fixed with a conical block 35, the edge expansion nail 2 includes an edge expansion tube 21 and an edge bolt 22 matching therewith, and a groove shell 23 is sleeved on the edge bolt 22.

[0024] Among them, the groove shell 23 is set as a circular shell with an opening at the top. During installation, first drill a hole in the wall, insert the center expansion tube into the hole, and then screw the center bolt 32 into the center expansion tube 31 to achieve fixation. Subsequently, screw the center screw rod 34 into the threaded hole 33 on the center bolt 32. When installing the heat preservation board 1, the positioning hole 9 corresponds to the position of the central expansion nail 3, and the conical block 35 is inserted into the keel 4 through the positioning hole 9. When installing the edge expansion nail 2, first drill a hole, then insert the edge expansion tube 21 into the hole. After that, first sleeve the groove shell 23 on the edge bolt 22, and then screw the edge bolt 22 into the edge expansion tube 21 to achieve fixation. At this time, the groove shell 23 just presses tightly in the positioning groove 8, thereby playing a role in pressing the heat preservation board 1; By setting the keel 4, it is beneficial to improve the compressive strength of the heat preservation board 1 and has a longer service life. By setting the edge expansion nails 2, it is beneficial to fix the heat preservation board 1.

[0025] Embodiment 3, refer to Figures 3-7 , different from the above embodiments, the clamping assembly 6 includes a clamping rod 61 and a vertical shaft 62 arranged inside the hollow cross 41. The clamping rod 61 is slidably connected to the inner wall of the hollow cross 41. One end of the clamping rod 61 extends to the middle of the hollow cross 41 and is provided with an inclined surface. The vertical shaft 62 is fixed inside the hollow cross 41. A movable block 63 is movably sleeved on the vertical shaft 62. A main spring 64 is fixed between the bottom of the movable block 63 and the inner wall of the hollow cross 41. The top of the movable block 63 is fixedly connected with a contact rod 65. The contact rod 65 penetrates through the hollow cross 41 and extends into the positioning groove 8. A connecting rod 66 is arranged between the movable block 63 and the clamping rod 61. The two ends of the connecting rod 66 are respectively hinged to the clamping rod 61 and the movable block 63.

[0026] Among them, the inclined surface at the end of the clamping rod 61 matches the side wall of the conical block 35. When the edge expansion nail 2 is installed, the groove shell 23 enters the positioning groove 8. At this time, the groove shell 23 contacts and presses down the contact rod 65, causing the contact rod 65 to move downward. When the contact rod 65 moves downward, it drives the movable block 63 to move downward. When the movable block 63 moves downward, it compresses the main spring 64 and drives one end of the connecting rod 66 to move downward. When one end of the connecting rod 66 moves downward, the other end pushes the clamping rod 61 to slide. After the clamping rod 61 slides, the inclined surface at the end of the clamping rod 61 closely adheres to the side wall of the conical block 35 on the central expansion tube 31. Multiple clamping rods 61 on the keel 4 are simultaneously engaged with the conical block 35, thereby realizing the fixation of the center of the insulation board 1. By setting the engaging assembly 6, when the edge expansion nail 2 is installed, one end of the clamping rod 61 can be driven, causing the end of the clamping rod 61 to move towards the center of the keel 4. As a result, the end of the clamping rod 61 is engaged with the conical block 35 on the central expansion nail 3, improving the fastening effect at the center of the insulation board 1. Compared with the prior art, there is no need to drill holes in the insulation board 1, enhancing the sealing performance of the insulation board 1.

[0027] Example Four. Refer to Figure 6 and Figure 9 Differing from the above embodiment, the buckle 5 includes a column body 51 inserted into the vertical tube 42. Vertical strip-shaped grooves 52 are formed on the side wall of the column body 51. Vertical guiding grooves 53 are provided on both inner walls of the vertical strip-shaped grooves 52. A rotating shaft 54 is provided in the vertical strip-shaped grooves 52. Both ends of the rotating shaft 54 extend into the two vertical guiding grooves 53 respectively. A clamping pin 55 is fixed on the rotating shaft 54. The length of the clamping pin 55 is less than the height of the vertical strip-shaped grooves 52. A secondary spring 56 is fixed between the cross-shaped hollow frames at the bottom end of the column body 51. A pull rope 57 is also fixed on the clamping rod 61. One end of the pull rope 57 penetrates into the vertical tube 42 and is fixedly connected to the bottom end of the column body 51.

[0028] Among them, in the initial state, the clamping pin 55 is vertical and accommodated in the vertical strip-shaped groove 52. When applying the crack-resistant layer on the insulation board 1, the fiberglass mesh cloth is passed through the main body, and then the vertically accommodated clamping pin 55 is rotated into a horizontal state. The horizontally placed clamping pin 55 is located at the top of the fiberglass mesh cloth. After that, when the engaging assembly 6 operates, the clamping rod 61 moves, driving one end of the pull rope 57 to move. The other end of the pull rope 57 then pulls the main body, causing the column body 51 to move downward. When the column body 51 moves, it compresses the secondary spring 56 and also drives the clamping pin 55 to move. Finally, the column body 51 is inserted into the round tube, and the horizontally placed clamping pin 55 presses the fiberglass mesh cloth tightly, thereby fixing the fiberglass mesh cloth. By setting the buckle 5, when the engaging assembly 6 operates, it drives the buckle 5 to move. The horizontally placed clamping pin 55 presses and fixes the fiberglass mesh cloth of the crack-resistant layer, improving the connection strength between the crack-resistant layer and the insulation board 1 and having higher safety.

[0029] Example Five. Refer to Figures 4-8, different from the above embodiments, an installation shallow groove 101 is provided at the edge of the heat preservation board 1. Both ends of the installation shallow groove 101 communicate with the positioning groove 8. A sealing strip 10 is adhesively bonded in the installation shallow groove 101. The sealing strip 10 includes two flat parts and a V-shaped telescopic part connected between the two flat parts. A clamping hole 24 is provided at the end of the edge bolt 22. A shell cover 11 covers the top of the groove shell 23. A plug rod 12 is fixed at the center of the shell cover 11. A head 13 matching the clamping hole 24 is fixed at the end of the plug rod 12.

[0030] Among them, when the heat preservation board 1 is laid, the sealing strip 10 is pasted at the joint between adjacent heat preservation boards 1. The V-shaped telescopic part corresponds to the gap between the two heat preservation boards 1, and the two flat parts are respectively pasted in the shallow grooves at the edges of the two heat preservation boards 1, so as to further seal the joint. After the sealing strip 10 is attached, the shell cover 11 is pressed against the end of the sealing strip 10, and at the same time, the head 13 on the shell cover 11 is inserted into the clamping hole 24 to realize the clamping and fixing of the shell cover 11; By providing the sealing strip 10, the joint of the heat preservation board 1 can be further sealed. Combining with the original polyurethane foam glue between the heat preservation boards 1 can achieve double sealing, further improving the waterproof performance. The V-shaped telescopic part can also adapt to the expansion and contraction of the heat preservation board 1. In addition, by providing the shell cover 11, the shell cover 11 can be clamped and fixed on the edge expansion nail 2, which is beneficial to pressing and fixing the end of the sealing strip 10.

[0031] Embodiment 6, a heat preservation method for a building. This heat preservation method for a building uses a building heat preservation wall body in the above embodiment.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A building thermal insulation wall, comprising a thermal insulation board, edge expansion nails and central expansion nails, characterized in that: A keel is fixedly arranged inside the heat preservation board. A plurality of buckles extending to the top of the heat preservation board are installed on the keel. The buckles are used for reinforcing the anti-cracking layer. The central expansion bolt is fixed on the wall surface and inserted into the keel. A clamping component is installed inside the keel. The clamping component is used for clamping the central expansion bolt, and the clamping component is also used for driving the buckles to contract. The edge expansion bolts are installed at the corners of the heat preservation board. The edge expansion bolts are used for fixing the heat preservation board and driving the clamping component to operate; Before the heat preservation board is fixed, the central expansion bolts are pre-fixed on the wall surface. When the heat preservation board is adhesively fixed, the central expansion bolts are just inserted into the keel. After the heat preservation board is adhesively fixed, first lay the anti-cracking layer on the heat preservation board, and then fix the edge expansion bolts at the corners of the heat preservation board. While the edge expansion bolts further fix the heat preservation board, they also drive the clamping component. When the clamping component operates, it clamps the central expansion bolts, and when the clamping component operates, it also forces the buckles to contract, locking and reinforcing the anti-cracking layer.

2. The building thermal insulation wall according to claim 1, characterized in that: The heat preservation board is set as a square board. Notches are provided at the corners of the heat preservation board. A positioning groove is opened on the top surface of the corner of the heat preservation board. The keel is set as a hollow cross. The ends of the hollow cross extend to the corners of the heat preservation board respectively. A positioning hole is opened at the center of the bottom of the heat preservation board. The positioning hole extends to the middle of the hollow cross. A plurality of vertical pipes are also fixed on the top of the hollow cross. The top ends of the vertical pipes extend to the top surface of the heat preservation board. The buckles are installed at the top ends of the vertical pipes.

3. The building thermal insulation wall according to claim 2, characterized in that: The central expansion bolt includes a central expansion pipe and a central bolt matching with it. A screw hole is provided at the end of the central bolt. A central screw is threadedly connected in the screw hole. One end of the central screw extends outside the screw hole and is fixed with a conical block.

4. A building thermal insulation wall according to claim 3, characterized in that: The edge expansion bolt includes an edge expansion pipe and an edge bolt matching with it. A groove shell is sleeved on the edge bolt.

5. The building thermal insulation wall according to claim 4, wherein: The clamping component includes a clamping rod and a vertical shaft arranged inside the hollow cross. The clamping rod is slidably connected with the inner wall of the hollow cross. One end of the clamping rod extends to the middle of the hollow cross and is provided with an inclined surface. The vertical shaft is fixed inside the hollow cross. A movable block is movably sleeved on the vertical shaft. A main spring is fixed between the bottom of the movable block and the inner wall of the hollow cross. The top of the movable block is fixedly connected with a contact rod. The contact rod penetrates through the hollow cross and extends into the positioning groove. A connecting rod is arranged between the movable block and the clamping rod. The two ends of the connecting rod are respectively hinged with the clamping rod and the movable block.

6. The building thermal insulation wall according to claim 5, characterized in that: The buckle includes a column body inserted into the vertical pipe. Vertical strip-shaped grooves are opened on the side wall of the column body. Vertical guiding grooves are provided on the inner walls of both sides of the vertical strip-shaped grooves. A rotating shaft is arranged in the vertical strip-shaped groove. The two ends of the rotating shaft respectively extend into the two vertical guiding grooves. A clamping needle is fixed on the rotating shaft. The length of the clamping needle is less than the height of the vertical strip-shaped groove.

7. A building thermal insulation wall according to claim 6, characterized in that: A secondary spring is fixed between the bottom end of the column body and the cross-shaped hollow frame. A pulling rope is also fixed on the clamping rod. One end of the pulling rope penetrates into the vertical pipe and is fixedly connected with the bottom end of the column body.

8. The building heat-insulating wall according to claim 7, characterized in that: The edge of the heat preservation board is provided with an installation shallow groove, both ends of the installation shallow groove are communicated with the positioning grooves, a sealing strip is adhered in the installation shallow groove, and the sealing strip comprises two flat parts and a V-shaped telescopic part connected between the two flat parts.

9. The building heat-insulating wall according to claim 8, characterized in that: A clamping hole is arranged at the end of the edge bolt, a shell cover covers the top of the groove shell, a plug rod is fixed at the center of the shell cover, and a head end matching with the clamping hole is fixed at the end of the plug rod.

10. A heat insulation method for construction, characterized in that: This heat preservation method for buildings uses a building heat preservation wall body as described in any one of claims 1-9.

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