CN209585340U - Prefabricated sandwich insulation exterior wall with dry-hanging structure - Google Patents

Abstract

The utility model discloses a prefabricated sandwich thermal insulation outer wall with a dry-hanging structure, comprising: an outer leaf plate, a sandwich insulation layer and an inner leaf plate sequentially connected from outside to inside, and the upper end of the inner leaf plate faces the direction where the outer leaf plate is located The corbel is protruded and formed, and there is a separation layer between the corbel and the outer leaf plate, and the separation layer is filled with flexible materials; the embedded parts are embedded in the corbel, and the keel is connected to the embedded part. The received load is transmitted to the inner blade through the embedded parts. The utility model directly connects the exterior wall decoration to the embedded part through the keel and the L-shaped connector, and the self-weight and the load of the exterior wall decoration are transmitted to the corbel through the keel, the L-shaped connector and the embedded part in turn. Then the corbel transmits the load to the inner vane, the force transmission path is relatively simple, and the inner vane, as a stressed member, can bear the load at the exterior wall finish, ensuring the strength and rigidity of the dry-hanging structure and improving Security of the entire prefabricated sandwich insulation exterior walls.

Description

Prefabricated sandwich insulation exterior wall with dry-hanging structure

technical field

The utility model relates to the structural design field of a prefabricated sandwich thermal insulation outer wall, in particular to a prefabricated sandwich thermal insulation outer wall with a dry-hanging structure.

Background technique

Due to the needs of the construction market, a large number of prefabricated buildings are designed in the form of prefabricated sandwich insulation exterior walls. At the same time, in order to improve the quality of the residences, developers generally require exterior wall finishes to use heavy materials such as stone or aluminum panels for aesthetics.

However, for the prefabricated sandwich insulation exterior wall, the outer slabs of the prefabricated sandwich insulation exterior wall are non-stressed components, which cannot bear large external loads, and the weight of the exterior wall finish is relatively large. Then the wind load on the exterior wall finish will be relatively large. In the prior art, the stone veneer or aluminum veneer is directly hung on the outer leaf plate, that is, its stress point is set on the outer leaf plate, and then the outer leaf plate will When the force is transmitted to the inner vane, the force transmission path is complicated, which makes it difficult to guarantee the strength and stiffness of the connection structure of the exterior wall finish, and there is a greater safety risk.

Contents of the invention

The purpose of this utility model is to provide a prefabricated sandwich insulation exterior wall with a dry-hanging structure, which solves the problem of force transmission on the exterior wall finish, has a simple path for force transmission, ensures the strength and rigidity of the dry-hanging structure, and improves the insulation performance of the entire prefabricated sandwich. Security of exterior walls.

The technical scheme provided by the utility model is as follows:

A prefabricated sandwich thermal insulation exterior wall with a dry-hanging structure, comprising: an outer leaf plate, a sandwich insulation layer and an inner leaf plate sequentially connected from outside to inside, the upper end of the inner leaf plate protrudes toward the direction where the outer leaf plate is located. To form a corbel, a separation layer is provided between the corbel and the outer leaf plate, and the separation layer is filled with a flexible material; an embedded part, the embedded part is embedded in the corbel, The keel is connected to the embedded part, and the load on the keel is transmitted to the inner leaf plate through the embedded part.

In the above structure, by setting the corbel extending outward on the inner leaf plate, and embedding the embedded parts in the corbel, the exterior wall finish is hung on the keel, and then the keel is connected to the embedded part, so that the exterior wall External loads such as the self-weight load and wind load of the veneer are transmitted to the embedded parts through the keel, and then transferred to the corbel through the embedded part, and the corbel then transmits the load to the inner blade. Between the plates there is a spacer layer filled with flexible material that hinders the transfer of loads, so that the loads on the inner leaves are not transferred to the outer leaves, and the loads of the exterior wall finish are not transferred through the outer leaves , therefore, the force transmission path of the exterior wall finish is relatively simple, and the inner vane, as a force-bearing member, can bear the load at the exterior wall finish. Therefore, the inner vane will not cause dry hanging structure due to excessive load Damage or fall, ensure the strength and rigidity of the dry-hanging structure, and improve the safety of the entire prefabricated sandwich insulation exterior wall.

Preferably, the embedded part includes an embedded panel and a connecting leg, the embedded panel is a plate-like structure, the connecting leg is connected to the end face of the embedded panel close to the room, and the connecting leg Extending to the vertical part of the inner leaf plate, the end of the connecting leg far away from the pre-embedded panel is welded to the anchor bar of the end of the leg; the end face of the pre-embedded panel close to the outdoor is flush with the end face of the corbel close to the outdoor; The keel is fixed on the embedded panel through an L-shaped connector, and the L-shaped connector includes a first part and a second part perpendicular to each other, wherein the first part of the L-shaped connector is connected to the embedded panel, and the The second part of the L-shaped connector is connected with the keel.

The anchor bar at the end of the leg on the connecting leg is an effective anchoring measure between the connecting leg and the inner leaf plate to prevent the connecting leg from falling off from the inner leaf plate, and the vertical setting where the connecting leg extends to the inner leaf plate part, so that the load of the exterior wall finish can be directly transmitted to the vertically arranged part of the inner blade, and the force transmission path is simpler.

Preferably, an additional thermal insulation layer is laid on the end surface of the corbel close to the outdoor, and the additional thermal insulation layer extends upwards and downwards for a certain distance, so that the outer leaf plate is sandwiched between the additional thermal insulation layer and the sandwich thermal insulation layer, and the The additional insulation layer covers the corbel and the embedded part; the L-shaped connector and the embedded part are respectively located on both sides of the additional insulation layer.

By laying an additional insulation layer on the end face of the corbel close to the outside, and covering the corbel and embedded parts with an additional insulation layer that plays a role in thermal insulation, it is ensured that the additional insulation layer and the sandwich insulation layer form a continuous insulation layer, which weakens the Thermal bridge effects at the embedment and the corbel.

Preferably, the prefabricated sandwich thermal insulation exterior wall with a dry-hanging structure also includes: a PCF external formwork, the PCF external formwork is located between the additional thermal insulation layer and the floor slab, and the upper end surface of the PCF external formwork is connected to the upper end surface of the floor slab flush, the PCF outer mold is integrally formed with the inner leaf plate below the floor of the corresponding height; the separation layer is also provided between the PCF outer mold and the corbel.

The PCF outer formwork is prefabricated on the inner leaf plate in the factory. When the concrete floor is actually poured, the PCF outer formwork can play the role of a concrete formwork, eliminating the need to set an outer formwork on the outer side of the outer leaf plate during pouring, which is convenient for on-site pouring. Reduce the use of molds when connecting the main beam and the secondary beam, saving mold purchase and labor costs.

Preferably, there are horizontal joints between the PCF outer formwork, the floor and the adjacent inner and outer leaf plates on the upper floor; along the direction from indoor to outdoor, waterproof mortar sections and grouting sections are sequentially arranged in the horizontal joints , Sealant strip section, cavity, PE rod and weather-resistant rubber section.

The horizontal joint is used as the reserved joint between the upper and lower adjacent prefabricated exterior wall panels, and is set in sequence through the above sequence. Among them, the waterproof mortar section is used for leveling and waterproofing the structural surface on the inner side of the inner blade, and the grouting section makes the upper and lower adjacent two floors The inner leaf board forms an effective connection, and the sealing rubber strip is used as a waterproof measure on the inner side of the outer leaf board. At the same time, the grouting section is used as a substrate to prevent grout overflow during grouting. The PE rod is the substrate of the weather-resistant rubber section, which makes the weather-resistant The rubber section is formed within a certain range to form an effective seal on the weather-resistant rubber section to prevent the weather-resistant rubber section from collapsing into the cavity. The weather-resistant rubber section is a material waterproof measure on the outer side of the outer blade.

Preferably, a self-adhesive waterproof rubber is provided on the end surface of the waterproof mortar section close to the room, and the self-adhesive waterproof rubber extends upward along the inner blade and extends toward the room along the floor.

By adding a layer of self-adhesive waterproof rubber on the inner side of the waterproof mortar section, the self-adhesive waterproof rubber acts as a waterproof measure on the inner side of the inner leaf plate to strengthen the waterproof effect.

Preferably, the upper end of the outer vane is of edge sealing structure; the upper end of the outer vane extends toward the direction of the inner vane to form an edge sealing portion, and the edge sealing portion is arranged against the outside of the inner vane. On the end face, the upper end of the sandwich insulation layer abuts against the lower end face of the edge seal; the edge seal structure of the outer leaf plate is provided with additional anti-cracking reinforcement, and the reinforcement ratio is greater than or equal to 0.3%.

Since the upper end of the outer leaf plate is an edge-sealed structure, there will be temperature stress at the edge-sealed structure of the outer leaf plate, ensuring that the reinforcement ratio is greater than or equal to 0.3% can effectively control the crack width and reduce the external crack width by adding additional anti-cracking reinforcement. The purpose of the influence of temperature stress on the blade plate, the purpose of the anti-cracking additional reinforcement is to prevent cracking.

Preferably, except for the upper end, the other three ends of the outer vane are of unsealed structure.

The other three sides of the outer leaf plate adopt an unsealed structure to release constraints.

Preferably, at the non-sealed structure, the end of the sandwich insulation layer is along the extending direction, and the thickness of the sandwich insulation layer gradually decreases to zero; the inner leaf plate corresponds to the non-sealed structure Part of the end of the outer leaf plate abuts against the end of the corresponding unsealed structure.

Preferably, at the non-sealed structure, the end of the sandwich insulation layer is along the extending direction, and the thickness of the sandwich insulation layer gradually decreases and finally remains constant until the inner blades correspond to different The end of the edge-sealing structure is completely separated from the end of the outer leaf plate corresponding to the non-edge-sealing structure by the lower end of the sandwich insulation layer.

The outer leaf plate is completely separated from the inner leaf plate through the sandwich insulation layer to ensure that free deformation can be used to resist temperature stress, prevent cracking at the lower end of the outer leaf plate, and ensure the structural strength at the lower end of the outer leaf plate.

The utility model provides a prefabricated sandwich insulation exterior wall with a dry-hanging structure, which can bring the following beneficial effects:

The utility model directly connects the exterior wall decoration to the embedded part through the keel and the L-shaped connector, and the self-weight and the load of the exterior wall decoration are transferred to the corbel through the keel, the L-shaped connector and the embedded part in turn. , and then the corbel transmits the load to the inner vane. During the entire load transmission process, the load is not transmitted to the outer vane. Therefore, the force transmission path of the utility model is relatively simple, and the inner vane is used as a force-bearing member It can bear the load on the exterior wall finish, and the inner leaf plate will not damage or fall off the dry-hanging structure due to excessive load, ensuring the strength and rigidity of the dry-hanging structure and improving the safety of the entire prefabricated sandwich insulation outer wall . And by setting anti-cracking additional reinforcement at the edge sealing structure of the outer leaf plate, and controlling the reinforcement ratio to be greater than or equal to 0.3%, controlling the crack width at the edge sealing structure of the outer leaf plate and reducing the influence of temperature stress on the outer leaf plate, The overall prefabricated sandwich insulation exterior wall has high stability. In addition, by laying an additional insulation layer on the end surface of the corbel close to the outside, the corbel and embedded parts are also covered by an additional insulation layer, ensuring that the additional insulation layer and the sandwich insulation layer together form a continuous insulation layer, which weakens the embedded parts. and thermal bridge effects at the corbel.

Description of drawings

In the following, the preferred embodiment will be described in a clear and understandable manner with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of the prefabricated sandwich insulation exterior wall with a dry-hanging structure will be further described.

Fig. 1 is the exterior view of the prefabricated sandwich insulation exterior wall with dry-hanging structure;

Fig. 2 is a sectional view along the direction 1-1 in Fig. 1;

Fig. 3 is a sectional view along the direction 2-2 in Fig. 1;

Fig. 4 is a partial enlarged view of A place in Fig. 1;

Fig. 5 is a schematic diagram of another specific implementation at A in Fig. 1 .

Explanation of reference numbers:

1-outer leaf plate, 2-inner leaf plate, 2a-corbel, 3-sandwich insulation layer, 3a-inclined surface, 4a-embedded panel, 4b-connecting leg, 4c-anchor bar at the end of leg, 5- Anti-cracking additional reinforcement, 6-floor, 7-separation layer, 8-additional insulation layer, 9-self-adhesive waterproof rubber, 10-waterproof mortar section, 11-grouting section, 12-sealing strip section, 13-cavity , 14-round PE rod, 15-weather-resistant rubber section, 16-PCF outer mold.

Detailed ways

In order to more clearly illustrate the embodiment of the utility model or the technical solutions in the prior art, the specific implementation of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those skilled in the art can also obtain other accompanying drawings according to these drawings without creative work, and Get other implementations.

In order to make the drawings concise, the parts related to the utility model are only schematically shown in each drawing, and they do not represent the actual structure of the product.

【Example 1】

As shown in Figures 1 to 2, Example 1 discloses a specific implementation of a prefabricated sandwich thermal insulation exterior wall with a dry-hanging structure, including: an outer leaf plate 1 connected sequentially from outside to inside, a sandwich insulation layer 3 and The inner vane 2, as shown in Figure 2, the upper end of the inner vane 2 protrudes toward the direction of the outer vane 1 to form a corbel 2a, as shown in Figure 1, the cross section of the corbel 2a is square, along the direction of the inner vane 2, there are multiple corbels 2a at the upper end of the inner leaf plate 1, and the distance between adjacent corbels 2a is calculated based on the division of exterior wall finishing materials and the magnitude of the load. The number of corbels 2a is based on The actual need to fix the keel is determined by the number of inner blades 2 . A separation layer 7 is provided between the corbel 2a and the outer leaf plate 1, and the separation layer 7 is filled with flexible materials, such as rock wool, glass wool, mineral wool and the like.

As shown in Figure 2, it also includes embedded parts. The embedded parts are embedded in the corbel 2a, the keel is connected to the embedded part, and the load on the keel is transmitted to the inner leaf plate 2 through the embedded part. The legs 2a are in one-to-one correspondence, that is, each corbel 2a is provided with an embedded part. In this embodiment, the keel refers to a vertical keel or a horizontal keel, and the material of the keel can be galvanized steel.

Specifically, as shown in Figures 1 and 2, the embedded parts include an embedded panel 4a and four connecting legs 4b. The embedded panel 4a is a plate-shaped structure, and the connecting legs 4b are vertically connected to the embedded panel 4a close to the room. On the end face of the connecting leg 4b, the connecting leg 4b extends to the vertical part of the inner blade 2, the cross-sectional shape of the connecting leg 4b is circular, and the end of the connecting leg 4b away from the embedded panel 4a is pasted and welded with a leg end anchor Rib 4c, in this embodiment, the anchor bar 4c at the end of the leg is a short steel bar, which is fixed on the end of the connecting leg 4b away from the embedded panel 4a by single-sided welding, and the embedded part is set on the connecting leg 4b The anchor bar 4c at the end of the leg forms a reliable anchor with the corbel 2a.

In other specific ways, the connecting legs 4b can also be other numbers, such as 1, 2, etc., when the number of connecting legs 4b is better than 4, the cross-sectional shape of the connecting legs 4b is not limited to a circle Shape, also can be square, triangle, ellipse etc., will not go into details here.

As shown in FIG. 2 , the end face of the pre-embedded panel 4a close to the outside is flush with the end face of the corbel 2a close to the outside, so as to ensure that the surface of the inner blade 2 is smooth and beautiful.

The keel is fixed on the embedded panel 4a through an L-shaped connector. The L-shaped connector includes a first part and a second part that are perpendicular to each other. The first part of the L-shaped connector is connected to the embedded panel 4a by bolts, and the L-shaped connection The second part of the piece is bolted to the keel. Specifically, a keel is connected to the embedded panel 4a through two L-shaped connectors, and the two L-shaped connectors are respectively arranged on both sides of the keel, so that the keel is more stably and firmly fixed on the embedded panel 4a. The received load is evenly transmitted to the embedded panel 4a through the L-shaped connectors on both sides, so that the load on the embedded panel 4a is more uniform. In this embodiment, the L-shaped connectors are made of galvanized steel.

In order to weaken the thermal bridge effect of the embedded part at the corbel 2a, an additional thermal insulation layer 8 is laid on the end surface of the corbel 2a close to the outdoor, and the additional thermal insulation layer 8 extends upward and downward for a certain distance, so that the outer leaf plate 1 is sandwiched between the additional Between the insulation layer 8 and the sandwich insulation layer 3, the additional insulation layer 8 covers the corbel 2a and the embedded part, and the L-shaped connector and the embedded part are respectively located on both sides of the additional insulation layer 8 for connecting the L-shaped connector The bolts with the embedded parts pass through the additional insulation layer 8, and the additional insulation layer 8 is used to weaken the thermal bridge effect at the corbel 2a and reduce the impact of setting the embedded parts at the corbel 2 on building energy saving.

It should be noted that, in the height direction (ie, the vertical direction of FIG. 2 ), the overlapping length of the additional insulating layer 8 and the sandwich insulating layer 3 and the thickness of the additional insulating layer 8 are set according to actual conditions, and are not limited here.

The force transmission path of the exterior wall finish in this embodiment is as follows: exterior wall finish, keel, L-shaped connector, embedded part, corbel 2a, and inner leaf plate 2, and the load will not be transmitted to non-stressed components At the outer blade 1, the force transmission path is relatively simple, and the inner blade 2, as a force-bearing member, can bear the load at the exterior wall finish, so the inner blade 2 will not cause dry hanging due to excessive load The structure is damaged or dropped to ensure the strength and rigidity of the dry hanging structure.

This embodiment has good promotion and application value, and satisfies the diversified and high-quality demands of the market for the exterior wall finishes of prefabricated sandwich thermal insulation exterior walls. The construction efficiency and quality are improved, and the safety hazards (such as falling off of the exterior wall finish) and construction difficulty of the exterior wall finish of the prefabricated sandwich thermal insulation exterior wall are improved.

[Example 2]

As shown in Figures 1 to 4, on the basis of Embodiment 1, Embodiment 2 also includes: a PCF outer mold 16, the PCF outer mold 16 is located between the additional insulation layer 8 and the floor 6, and the PCF outer mold 16 The upper end face of the floor 6 is flush with the upper end face of the floor 6, and the PCF outer formwork 16 is prefabricated on the inner leaf 2 in the factory, and plays the role of a concrete formwork when the floor 6 is poured. The outer formwork is set on the outer side of the mold, which is convenient for on-site pouring and saves the cost of mold purchase. The PCF outer mold 16 is integrally formed with the inner blade 2 below the floor 6 of the corresponding height. Also be provided with spacer layer 7 between PCF outer mold 16 and corbel 2a, avoid the load at corbel 2a place to be transmitted to PCF outer mold 16 by spacer layer 7, as shown in Figure 1, spacer layer 7 is annular , surrounded by the outside of the corbel 2a.

As shown in Figure 2, there is a horizontal seam between the PCF outer formwork 16, the floor 6 and the adjacent inner leaf board 2 and outer leaf board 1 on the upper floor. The horizontal seam is reserved between the upper and lower adjacent prefabricated outer wall panels. Seam, along the height direction (i.e. the vertical direction in Figure 2), the width of the horizontal seam is 20mm, along the indoor to outdoor direction (i.e. the horizontal direction to the left in Figure 2), the horizontal seam is successively set There are waterproof mortar section 10, grouting section 11, sealing strip section 12, cavity 13, round PE rod 14 and weather-resistant rubber section 15.

The waterproof mortar section 10 is used for leveling and waterproofing the structural surface on the inner side of the inner leaf plate 2. The grouting section 11 enables the upper and lower adjacent inner leaf plates 2 to form an effective connection. The sealing strip is used as a waterproof measure on the inner side of the outer leaf plate 1. At the same time, the grouting section 11 is used as the substrate to prevent the grout from overflowing when the grouting material is used. The round PE rod 14 is the substrate of the weather-resistant rubber section 15, so that the weather-resistant rubber section 15 is formed within a certain range to form an effective seal. The weather-resistant rubber section 15 collapses into the cavity 13, and the weather-resistant rubber section 15 is a material waterproof measure on the outer side of the outer blade 1.

Among them, the length of the weather-resistant rubber section 15 is greater than 10mm to ensure the waterproof performance at the outer side of the outer blade 1, the diameter of the round PE rod 14 is 25mm, and the length of the waterproof mortar section 10 is selected according to different requirements of the project, such as 10mm or 20mm.

In order to have better waterproof performance at the horizontal joints, a self-adhesive waterproof rubber 9 is provided on the end face of the waterproof mortar section 10 close to the room. Indoor extension. Thereby further preventing external water vapor from entering the room through the horizontal seam.

[Example 3]

As shown in Figures 1 to 4, Embodiment 3 is based on Embodiments 1 to 2, and the upper end of the outer vane 1 in Embodiment 3 is of an edge-sealing structure.

Specifically, as shown in Figures 2 and 3, the upper end of the outer blade 1 extends toward the direction of the inner blade 2 to form an edge seal, and the edge seal is arranged on the end surface of the inner blade 2 close to the outside, and the sandwich heat preservation The upper end of the layer 3 is set against the lower end surface of the edge sealing part, and the edge sealing structure of the outer leaf plate 1 is provided with an L-shaped anti-cracking additional reinforcement 5, and the reinforcement ratio is 0.3%. In other specific embodiments, The reinforcement ratio can also be 0.35%, 0.4%, etc., and the reinforcement ratio is greater than or equal to 0.3%, which can effectively control the crack width at the outer blade 1 and reduce the crack width of the outer blade 1 by adding an additional anti-cracking reinforcement 5 in the outer blade 1. For the influence of the temperature stress on the blade plate 1 and the purpose of preventing cracking, it is enough to select an appropriate value of the reinforcement ratio according to the actual situation.

As shown in Figure 2, the other three ends of the outer leaf plate 1 except the upper end are non-sealed structures. Specifically, as shown in Figure 4, at the non-sealed structure, the ends of the sandwich insulation layer 3 Along the direction of its extension, the thickness of the sandwich insulation layer 3 (that is, the width of the sandwich insulation layer 3 in the horizontal direction in Figure 4) gradually decreases to zero, and the inner leaf plate 2 corresponds to the end of the unsealed structure and the outer leaf. A part of the end of the plate 1 corresponding to the non-sealed structure abuts.

As shown in Figure 4, taking the lower end of the sandwich insulation layer 3 as an example, the lower end of the sandwich insulation layer 3 is along the downward direction, and the thickness of the sandwich insulation layer 3 gradually decreases to zero, forming a bottom at the lower end of the sandwich insulation layer 3. The inclined surface 3a is arranged against the end surface of the inner vane 2 away from the room, and the lower end of the inner vane 2 is partly in contact with the lower end of the outer vane 1 .

【Example 4】

As shown in Figures 1 to 2 and Figure 5, the structure of Embodiment 4 is basically the same as that of Embodiment 3. The difference between Embodiment 4 and Embodiment 3 is that the other three ends of the outer vane 1 of Embodiment 4 The structure of the unsealed edge is different.

Specifically, at the unsealed structure, the end of the sandwich insulation layer 3 is along the direction of its extension, and the thickness of the sandwich insulation layer 3 gradually decreases and finally remains unchanged until the inner blade 2 corresponds to the unsealed structure. The end is completely separated from the end of the outer leaf plate 1 corresponding to the unsealed structure by the lower end of the sandwich insulation layer 3 .

As shown in Figure 5, take the lower end of the sandwich insulation layer 3 as an example, the lower end of the sandwich insulation layer 3 is along the downward direction, the thickness of the sandwich insulation layer 3 (i.e. the width of the sandwich insulation layer 3 in the horizontal direction in Figure 5 ) gradually decreases and finally remains constant until the lower end of the inner blade 2 and the lower end of the outer blade 1 are completely separated by the lower end of the sandwich insulation layer 3 .

The outer leaf plate 1 is completely separated from the inner leaf plate 2 through the sandwich insulation layer 3 to ensure that free deformation can be used to resist temperature stress here, prevent the lower end of the outer leaf plate 1 from cracking, and then ensure the structural strength at the lower end of the outer leaf plate 1 .

It should be noted that the above embodiments can be freely combined as required. The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (10)

1. A prefabricated sandwich insulation exterior wall with a dry-hanging structure, characterized in that it comprises: The outer blade, the sandwich insulation layer and the inner blade are sequentially connected from outside to inside, the upper end of the inner blade protrudes toward the direction of the outer blade to form a corbel, and the corbel and the outer blade There is a spacer layer between them, and the spacer layer is filled with flexible material; The embedded part is embedded in the corbel, the keel is connected to the embedded part, and the load on the keel is transmitted to the inner leaf plate through the embedded part. 2. The prefabricated sandwich insulation exterior wall with dry-hanging structure according to claim 1, characterized in that: The embedded part includes an embedded panel and a connecting leg, the embedded panel is a plate-like structure, the connecting leg is connected to the end face of the embedded panel close to the room, and the connecting leg extends to the inner The vertical part of the leaf plate, the end of the connecting leg away from the pre-embedded panel is pasted with the anchor bar at the end of the leg; The end face of the pre-embedded panel close to the outside is flush with the end face of the corbel close to the outside; The keel is fixed on the embedded panel through an L-shaped connector, and the L-shaped connector includes a first part and a second part perpendicular to each other, wherein the first part of the L-shaped connector is connected to the embedded panel, and the The second part of the L-shaped connector is connected with the keel. 3. The prefabricated sandwich insulation exterior wall with dry-hanging structure according to claim 2, characterized in that: An additional thermal insulation layer is laid on the end surface of the corbel close to the outdoor, and the additional thermal insulation layer extends upward and downward for a certain distance, so that the outer leaf plate is sandwiched between the additional thermal insulation layer and the sandwich thermal insulation layer, and the additional thermal insulation layer Covering the corbels and embedded parts; The L-shaped connecting piece and the embedded piece are respectively located on both sides of the additional insulation layer. 4. The prefabricated sandwich insulation exterior wall with dry-hanging structure according to claim 3, further comprising: PCF outer mold, the PCF outer mold is located between the additional insulation layer and the floor slab, and the upper end surface of the PCF outer mold is flush with the upper end surface of the floor slab, and the inner blade plate below the floor slab of the corresponding height One piece; The separation layer is also provided between the PCF outer mold and the corbel. 5. The prefabricated sandwich thermal insulation exterior wall with dry-hanging structure according to claim 4, characterized in that: there are horizontal seams between the PCF outer formwork, the floor slab and the adjacent inner and outer leaf plates on the upper floor; Along the direction from indoor to outdoor, waterproof mortar section, grouting section, sealing strip section, cavity, PE rod and weather-resistant rubber section are sequentially arranged in the horizontal joint. 6. The prefabricated sandwich insulation exterior wall with dry-hanging structure according to claim 5, characterized in that: A self-adhesive waterproof rubber is provided on the end surface of the waterproof mortar section close to the room, and the self-adhesive waterproof rubber extends upward along the inner leaf board and extends toward the room along the floor. 7. The prefabricated sandwich thermal insulation exterior wall with dry-hanging structure according to claim 1, characterized in that: the upper end of the outer leaf plate is an edge-sealing structure; The upper end of the outer leaf plate extends toward the direction of the inner leaf plate to form an edge sealing portion, the edge sealing portion is set against the end surface of the inner leaf plate close to the outdoor, and the upper end of the sandwich insulation layer is set against the the lower end face of the edge banding portion; The edge sealing structure of the outer leaf plate is provided with additional anti-cracking reinforcement, and the reinforcement ratio is greater than or equal to 0.3%. 8. The prefabricated sandwich thermal insulation exterior wall with dry-hanging structure according to claim 7, characterized in that: the three ends of the outer leaf plate except the upper end are all unsealed structures. 9. The prefabricated sandwich insulation exterior wall with dry-hanging structure according to claim 8, characterized in that: At the non-sealed structure, the end of the sandwich insulation layer extends along its direction, and the thickness of the sandwich insulation layer gradually decreases to zero; The end of the inner vane corresponding to the unsealed structure partly abuts against the end of the outer vane corresponding to the unsealed structure. 10. The prefabricated sandwich insulation exterior wall with dry-hanging structure according to claim 8, characterized in that: At the non-sealed structure, the end of the sandwich insulation layer is along the direction of its extension, and the thickness of the sandwich insulation layer gradually decreases and finally remains constant until the inner leaf plate corresponds to the non-sealed structure The end of the outer leaf plate is completely separated from the end of the outer leaf plate corresponding to the unsealed structure by the lower end of the sandwich insulation layer.