Double-formwork prefabricated part and building energy-saving wall structure comprising same

Abstract

The utility model discloses a double-formwork prefabricated part and a building energy-saving wall body structure comprising the same, the double-formwork prefabricated part comprises an outer formwork, an inner formwork, wall body reinforcing steel bars, formwork limiting devices and a plurality of connecting parts, the outer formwork comprises a heat preservation layer, the heat preservation layer is made of heat preservation materials with the fireproofing grade reaching grade A, and the inner formwork is made of heat preservation materials with the fireproofing grade reaching grade B; the inner formwork and the outer formwork are arranged on the inner side and the outer side of the wall body steel bar respectively, the connecting component comprises a metal connecting piece and a heat insulation material layer, the heat insulation material layer wraps the outer surface of the metal connecting piece, the metal connecting piece and the heat insulation material layer penetrate through the heat insulation layer from the outer side of the heat insulation layer, and the formwork limiting device is connected to the wall body steel bar. And the two ends of the mold shell limiting device are connected to the outer mold shell and the inner mold shell. Therefore, the fireproof effect is effectively achieved, and fireproof hidden dangers are completely eradicated. Meanwhile, falling is effectively prevented, and the safety and stability of the building energy-saving wall structure are greatly improved. The heat insulation effect of the building energy-saving wall structure is effectively enhanced, and the cold and hot bridge phenomenon is further overcome.

Description

Technical Field

[0001] This utility model relates to a dual-shell prefabricated component and an energy-saving building wall structure containing the same. Background Technology

[0002] Currently, external insulation systems commonly employ a post-installation method combining adhesive bonding and mechanical anchoring. However, in recent years, due to frequent detachment and fire accidents involving adhesive-anchored external insulation systems, Shanghai, Zhejiang, Hebei, Shandong, and other regions have issued relevant policies prohibiting the use of adhesives, anchors, or a combination of both for on-site construction of external insulation systems, and requiring the use of Class A fire-resistant insulation materials. To address this challenge, the industry has begun exploring the use of high-performance, high-strength Class A insulation materials as the outer formwork for cast-in-place concrete, supplemented by specialized anchors, to achieve integration of insulation and structure. However, this non-removable insulation formwork still requires extensive on-site operations such as formwork cutting and erection, resulting in low construction efficiency and difficulty in controlling wall surface flatness.

[0003] To address the aforementioned issues, double-sided formwork-free wall panel technology has emerged. This technology combines a steel reinforcement cage for the wall structure with two concrete formwork panels on either side to create a cast-in-place precast component. To further enhance insulation and achieve integrated insulation structure, insulation material is often composited within one or both formwork panels. However, it's worth noting that this technology currently primarily uses Class B insulation materials. According to building fire safety standards, a protective layer of at least 50mm thickness is required on the outside of the insulation layer, typically achieved through a concrete structure on the outside of the insulation layer. However, this at least 50mm thick concrete layer not only increases the wall's thickness but also significantly increases the structure's self-weight.

[0004] Therefore, how to achieve double-sided formwork-free insulated walls while ensuring insulation performance, and improve the overall construction efficiency of insulation systems, has always been a challenge for the building insulation materials industry and the construction industry. Currently, the industry urgently needs to develop corresponding solutions to overcome this technical bottleneck. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings of the existing materials. This utility model provides a double-shell prefabricated component and a building energy-saving wall structure containing the same.

[0006] This utility model is achieved through the following technical solution:

[0007] A double-shell precast component includes an outer shell, an inner shell, wall reinforcement, a shell limiting device, and several connecting components. The outer shell includes an insulation layer made of fire-resistant material with a Class A fire rating. The inner shell and the outer shell are respectively disposed on the inner and outer sides of the wall reinforcement. The connecting components include metal connectors and an insulation material layer. The insulation material layer covers the outer surface of the metal connectors, and both the metal connectors and the insulation material layer penetrate from the outside of the insulation layer. The insulation layer is provided such that the connecting component is exposed on the inner side of the insulation layer and extends between the inner mold shell and the outer mold shell. The mold shell limiting device is connected to the wall reinforcement, and both ends of the mold shell limiting device are connected to the outer mold shell and the inner mold shell, so that concrete is poured between the outer mold shell and the inner mold shell and covers the wall reinforcement, so that the wall reinforcement and the concrete form a base wall. The base wall is connected to the outer mold shell, the inner mold shell and several connecting components.

[0008] Furthermore, the metal connector includes an anchor plate and an anchor rod. The anchor plate abuts against the outer side of the insulation layer, one end of the anchor rod is connected to the anchor plate, and the other end of the anchor rod passes through the insulation layer and is connected to the base wall. The thermal insulation material layer covers the outer surfaces of the anchor plate and the anchor rod.

[0009] And / or, the insulation layer is a Class A fireproof insulation material composed of a single homogeneous material.

[0010] Furthermore, the double-mold prefabricated component also includes a reinforcing member, which is disposed on the opposite side of the outer mold shell and / or the inner mold shell and connected to the mold shell limiting device;

[0011] And / or, the material of the inner mold shell is one or more of the following: wooden template, metal template, high-strength cement fiberboard, UHPC board, metal non-removable template mesh, and insulation board with thermal insulation function;

[0012] And / or, the insulation layer is made of graphene insulation material or polyurethane insulation material.

[0013] Furthermore, the outer surface of the connecting component has an outwardly protruding blocking structure;

[0014] And / or, the connecting component is connected to the wall reinforcement.

[0015] Furthermore, the mold shell limiting device includes a screw and two nuts. The screw passes through the outer mold shell, the wall reinforcement and the inner mold shell, and the two ends of the screw are respectively connected to the two nuts, so that the two nuts abut against the opposite sides of the outer mold shell and the inner mold shell respectively.

[0016] Alternatively, the mold shell limiting device includes a pre-embedded sleeve, a screw, and a nut. The pre-embedded sleeve is disposed inside the outer mold shell. One end of the screw is connected to the pre-embedded sleeve, and the other end of the screw passes through the wall reinforcement and the inner mold shell and is connected to the nut, so that the nut abuts against the side of the inner mold shell.

[0017] And / or, the outer mold shell further includes a reinforcing mesh, which is built into the insulation layer and / or placed on the surface of the insulation layer, and the connecting component passes through the reinforcing mesh.

[0018] Furthermore, the outer peripheral surface of the pre-embedded sleeve has a limiting disc that protrudes in its radial direction, the limiting disc being located inside the outer mold shell and / or the limiting disc abutting against the outer surface of the outer mold shell;

[0019] And / or, the connecting component is connected to the reinforcing mesh.

[0020] Furthermore, the mold shell limiting device also includes a limiting chuck, which is located between the inner mold shell and the outer mold shell and connected to the screw, and the limiting chuck abuts against the opposite side of the outer mold shell and / or the inner mold shell.

[0021] An energy-saving building wall structure includes a double-shell prefabricated component as described above and a base wall formed by concrete pouring into the wall reinforcement.

[0022] Furthermore, the base wall is constructed by casting the concrete onto the wall reinforcement at the construction site or in a precast PC factory using a cast-in-place process;

[0023] And / or, the building energy-saving wall structure further includes a leveling layer and / or a plastering layer, the leveling layer and / or plastering layer being connected to the opposite sides of the outer mold shell and / or the inner mold shell.

[0024] Furthermore, the building energy-saving wall structure also includes a finishing layer, which is connected to the outer side of the plaster layer.

[0025] The beneficial effects of this utility model are as follows:

[0026] This utility model discloses a double-shell prefabricated component and a building energy-saving wall structure containing it. The outer shell is constructed with a Class A fire-resistant insulation material through an insulation layer, effectively providing fire protection and eliminating fire hazards. A shell limiting device connects the outer shell to the wall reinforcement and to both the outer and inner shells, thus linking the outer and inner shells with the wall reinforcement, enhancing connection strength and effectively preventing falls. It achieves a non-dismantling effect while integrating insulation and structure, ensuring safety and efficiency. Furthermore, much of the on-site reinforcement binding work is completed in the factory through integrated prefabrication, making it more precise and efficient. On-site construction and installation are convenient and efficient, with easier and more precise control over construction quality, significantly improving manufacturing and installation efficiency. Simultaneously, several connecting components further strengthen the connection between the outer shell and the base wall, effectively preventing falls and greatly improving the safety and stability of the building energy-saving wall structure. Furthermore, the metal connectors are made of metal, ensuring a stable and reliable connection; the outer surface of the metal connectors is covered with a thermal insulation material layer, which effectively enhances the thermal insulation effect of the building's energy-saving wall structure and further overcomes the thermal bridging phenomenon. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the internal structure of the double-mold shell prefabricated component of Embodiment 1 of this utility model.

[0028] Figure 2 This is a schematic diagram of the mold shell limiting device in Embodiment 1 of this utility model.

[0029] Figure 3 This is a schematic diagram of the internal structure of the double-mold shell prefabricated component of Embodiment 2 of this utility model.

[0030] Figure 4 This is a schematic diagram of the mold shell limiting device in Embodiment 2 of this utility model.

[0031] Figure 5 This is a schematic diagram of the internal structure of the double-mold shell prefabricated component of Embodiment 3 of this utility model.

[0032] Figure 6 This is a schematic diagram of the mold shell limiting device in Embodiment 3 of this utility model.

[0033] Figure 7 This is a schematic diagram of the internal structure of the double-mold shell prefabricated component of Embodiment 4 of this utility model.

[0034] Figure 8 This is a schematic diagram of the internal structure of the double-mold shell prefabricated component of Embodiment 5 of this utility model.

[0035] Figure 9 This is a schematic diagram of the internal structure of the double-mold shell prefabricated component of Embodiment 6 of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] Outer mold shell 1

[0038] Insulation layer 11

[0039] Reinforced Network 12

[0040] Inner mold shell 2

[0041] 3 Reinforcing bars in the wall

[0042] Mold shell limiting device 4

[0043] Screw 41

[0044] Nut 42

[0045] Embedded sleeve 43

[0046] Limit plate 431

[0047] Limit chuck 44

[0048] Connecting component 5

[0049] Anchor Plate 51

[0050] Anchor Bolt 52

[0051] Blocking Structure 53

[0052] Reinforced component 6 Detailed Implementation

[0053] The following description of the embodiments is with reference to the accompanying drawings, which illustrate specific embodiments in which the present invention can be implemented.

[0054] Example 1

[0055] like Figure 1 and Figure 2As shown, this embodiment discloses a building energy-saving wall structure, which includes a double-shell prefabricated component and a base wall formed by concrete pouring onto the wall reinforcement 3. The double-shell prefabricated component includes an outer shell 1, an inner shell 2, wall reinforcement 3, a shell limiting device 4, and several connecting components 5. The outer shell 1 includes an insulation layer 11, which is made of insulation material with a fire resistance rating of Class A. The inner shell 2 and the outer shell 1 are respectively disposed on the inner and outer sides of the wall reinforcement 3. The connecting components 5 include metal connectors and an insulation material layer. The insulation material layer covers the outer surface of the metal connectors, and both the metal connectors and the insulation material layer are located on the insulation layer 11. The outer side of the insulation layer 11 is penetrated so that the connecting component 5 is exposed on the inner side of the insulation layer 11 and extends into the space between the inner mold shell 2 and the outer mold shell 1. The mold shell limiting device 4 is connected to the wall reinforcement 3, and the two ends of the mold shell limiting device 4 are connected to the outer mold shell 1 and the inner mold shell 2, so that the concrete is poured between the outer mold shell 1 and the inner mold shell 2 and covers the wall reinforcement 3, so that the wall reinforcement 3 and the concrete form a base wall. The base wall is connected to the outer mold shell 1, the inner mold shell 2 and several connecting components 5.

[0056] The outer formwork 1 is constructed with a Class A fire-resistant insulation layer 11, effectively preventing fire hazards. Simultaneously, several connecting components 5 further strengthen the connection between the outer formwork 1 and the base wall, effectively preventing falls and significantly improving the safety and stability of the building's energy-saving wall structure. The metal connectors are made of metal, ensuring stable and reliable connections; their outer surfaces are covered with an insulation layer, which effectively enhances the thermal insulation of the building's energy-saving wall structure, further overcoming thermal bridging. The structure is simple and easy to manufacture.

[0057] The wall reinforcement 3 is located between the outer formwork 1 and the inner formwork 2. It is connected to the wall reinforcement 3 by the formwork limiting device 4, and its two ends are respectively connected to the outer formwork 1 and the inner formwork 2. This connects the outer formwork 1, the inner formwork 2, and the wall reinforcement 3 together, improving the connection firmness, effectively preventing falling, and greatly improving the safety and stability of the building's energy-saving wall structure. At the same time, it achieves the effect of not needing to be dismantled, and also realizes the integration of insulation and structure, which is safe and efficient. Moreover, a large amount of on-site reinforcement binding work is completed in the factory through integrated prefabrication, which is more precise and efficient. On-site construction and installation are convenient and efficient, and the construction quality is easier to control and more precise. The production efficiency and construction and installation efficiency are significantly improved. The base wall is made of concrete cast on the wall reinforcement 3 by cast-in-place process on the construction site or in a PC prefabrication plant. The formwork limiting device 4 can be welded, clipped, or tied to the wall reinforcement 3.

[0058] In this embodiment, the inner mold shell 2 is made of wood template. Of course, in other embodiments, the inner mold shell 2 can also be made of one or more of the following: wood template, metal template, high-strength cement fiberboard, UHPC board, metal removable template mesh, and insulation board with thermal insulation function. When the inner mold shell 2 is made of multiple materials, these materials can be layered.

[0059] In this embodiment, the insulation layer 11 is a Class A fire-resistant insulation material composed of a single homogeneous material. The Class A fire-resistant insulation material effectively ensures the fire resistance and insulation performance of the building's energy-saving wall structure, thus eliminating the need for additional inorganic composite panels to enhance its strength and fire resistance.

[0060] The insulation layer 11 can be made of polyurethane insulation material or silicon graphene insulation material, which effectively ensures the insulation and fire resistance of the building's energy-saving wall structure and greatly improves the safety and stability of the building's energy-saving wall structure.

[0061] The metal connector includes an anchor plate 51 and an anchor rod 52. The anchor plate 51 abuts against the outer side of the insulation layer 11, and one end of the anchor rod 52 is connected to the anchor plate 51. The other end of the anchor rod 52 passes through the insulation layer 11 and connects to the base wall. The insulation material layer covers the outer surfaces of the anchor plate 51 and the anchor rod 52. The metal connector abuts against the outer side of the insulation layer 11 through the anchor plate 51, and passes through the outer formwork 1 through the anchor rod 52, so that the anchor rod 52 is connected to the base wall by concrete pouring into the wall reinforcement 3. The insulation material layer covers the outer surfaces of the anchor plate 51 and the anchor rod 52. The overall structure is simple and very convenient to use.

[0062] The outer surface of the connecting component 5 has an outwardly protruding blocking structure 53. The outwardly protruding blocking structure 53 is located on the anchor rod 52 and there are multiple blocking structures 53. The multiple blocking structures 53 are closely abutted against the outer mold shell 1 and the base wall, which further strengthens the connection strength of the building energy-saving wall structure, effectively prevents falling, and greatly improves the safety and stability of the building energy-saving wall structure.

[0063] The connecting component 5 is connected to the wall reinforcement 3. The connecting component 5 extends into the base wall through the anchor rod 52 and is connected to the wall reinforcement 3, which further strengthens the structural connection strength and greatly improves the safety and stability of the building's energy-saving wall structure.

[0064] The outer mold shell 1 also includes a reinforcing mesh 12, which is built into the insulation layer 11 and / or placed on the surface of the insulation layer 11. The connecting component 5 passes through the reinforcing mesh 12. During the processing of the outer mold shell 1, the reinforcing mesh 12 is placed on top of the raw material composition of the insulation layer 11 after the first layer of material is applied inside the mold. Then, the raw material composition of the insulation layer 11 is applied a second time in the mold, so that the raw material composition of the insulation layer 11 completely wraps the reinforcing mesh 12 after the second layer of material is applied, thus realizing that the reinforcing mesh 12 is built into the insulation layer 11. Of course, the reinforcing mesh 12 can also be placed on the surface of the insulation layer 11 after the insulation layer 11 is processed. The reinforcing mesh 12 can further enhance the overall structural strength of the double-mold shell prefabricated component, greatly improving the safety and stability of the building's energy-saving wall structure.

[0065] In this embodiment, the connecting component 5 is connected to the reinforcing mesh 12. The connecting component 5 passes through the outer mold shell 1 via the anchor rod 52 and is connected to the reinforcing mesh 12, further strengthening the structural connection strength and greatly improving the safety and stability of the double-mold precast component. The number of reinforcing meshes 12 is not limited. The reinforcing mesh 12 can be treated for rust and corrosion prevention to prevent it from corroding during use, thus affecting its bonding strength with the insulation material.

[0066] In this embodiment, the mold shell limiting device 4 includes a screw 41 and two nuts 42. The screw 41 passes through the outer mold shell 1, the wall reinforcement 3, and the inner mold shell 2, and both ends of the screw 41 are connected to the two nuts 42, so that the two nuts 42 abut against the opposite sides of the outer mold shell 1 and the inner mold shell 2, respectively. The wall reinforcement 3 is disposed between the outer mold shell 1 and the inner mold shell 2. The screw 41 passes through the outer mold shell 1, the wall reinforcement 3, and the inner mold shell 2 and protrudes from the opposite sides of the outer mold shell 1 and the inner mold shell 2. Both ends of the screw 41 are connected to the two nuts 42, so that the two nuts 42 abut against the opposite sides of the outer mold shell 1 and the inner mold shell 2, thereby connecting the outer mold shell 1, the inner mold shell 2, and the wall reinforcement 3. The assembly of the double-mold precast component is very convenient. At the same time, the screw 41 and the nuts 42 adopt a threaded connection, making the installation and connection of the mold shell limiting device 4 very convenient. Among them, the two ends of the screw 41 are fitted with washers, and the two washers are respectively pressed between the two nuts 42 and the opposite sides of the outer mold shell 1 and the inner mold shell 2.

[0067] The building energy-saving wall structure also includes a leveling layer, which is connected to the opposite sides of the outer formwork 1 and / or the inner formwork 2. By setting the leveling layer on the opposite sides of the outer formwork 1 and / or the inner formwork 2, the leveling layer serves a leveling and protective function, ensuring the good functionality of the building energy-saving wall structure.

[0068] The leveling layer is used to completely cover the screw 41 and nut 42 of the mold shell limiting device 4. The leveling layer may include leveling mortar and mesh cloth. The leveling mortar is connected to the opposite sides of the outer mold shell 1 and / or the inner mold shell 2. The mesh cloth is located in the leveling mortar. The mesh arrangement in the leveling mortar can enhance the overall structural strength of the leveling layer.

[0069] The building's energy-efficient wall structure also includes a plaster layer, which is connected to the opposite sides of the outer formwork 1 and / or the inner formwork 2. The plaster layer serves to waterproof and prevent cracking, ensuring the functional integrity of the building's energy-efficient wall structure.

[0070] The finishing layer may include finishing mortar and a mesh fabric. The finishing mortar is attached to the outer surface of the outer mold shell 1 and / or the inner mold shell 2, while the mesh fabric is located within the finishing mortar. The mesh arrangement within the finishing mortar enhances the overall structural strength and crack resistance of the finishing layer. Alternatively, this energy-saving wall structure may include both a leveling layer and a finishing layer, which can be interconnected and work together to provide protection.

[0071] The energy-efficient wall structure also includes a finishing layer, which is connected to the outer side of the plaster layer. The finishing layer can be installed on the outside of the plaster layer to protect the wall, beautify the building, and meet usage requirements. Materials for the finishing layer include paint, ceramic tiles, stone, and metal panels. The finishing layer can be installed on-site or prefabricated in a PC (polycarbonate) factory and integrated onto the outside of the plaster layer.

[0072] Example 2

[0073] like Figure 3 and Figure 4 As shown, the parts of the building energy-saving wall structure in this embodiment that are the same as those in Embodiment 1 will not be repeated; only the differences will be explained. In this Embodiment 2, the mold shell limiting device 4 does not include two nuts 42. The mold shell limiting device 4 includes a pre-embedded sleeve 43, a screw 41, and nuts 42. The pre-embedded sleeve 43 is disposed inside the outer mold shell 1. One end of the screw 41 is connected to the pre-embedded sleeve 43, and the other end of the screw 41 passes through the wall reinforcement 3 and the inner mold shell 2 and is connected to the nuts 42 so that the nuts 42 abut against the side of the inner mold shell 2. When processing and manufacturing the outer mold shell 1, the pre-embedded sleeve 43 is first pre-embedded into the raw material composition of the insulation layer 11, so that the pre-embedded sleeve 43 is set inside the outer mold shell 1 after the outer mold shell 1 is shaped; when assembling the mold shell limiting device 4, one end of the screw 41 is connected to the pre-embedded sleeve 43, and the other end passes through the wall steel bar 3 and the inner mold shell 2 and is connected to the nut 42, so that the assembly of the double mold shell prefabricated component is very convenient.

[0074] Of course, in other embodiments, the pre-embedded sleeve 43 and nut 32 are interchanged, so that the pre-embedded sleeve 43 can also be pre-embedded in the inner mold shell 2, and the screw 41 passes through the outer mold shell 1 and the nut 42 so that the nut 42 abuts against the outside of the outer mold shell 1.

[0075] The embedded sleeve 43 has an internal thread, which is connected to the external thread of the screw 41 through the internal thread. The threaded connection method makes installation and disassembly very convenient, and the structure is simple and easy to process and manufacture.

[0076] In this embodiment 2, the pre-embedded sleeve 43 is connected to the reinforcing mesh 12. The pre-embedded sleeve 43 is embedded in the insulation layer 11 and passes through the reinforcing mesh 12 and is connected to the reinforcing mesh 12, thereby achieving high structural connection strength, effectively avoiding detachment, and greatly improving the safety and stability of the building's energy-saving wall structure.

[0077] In this embodiment 2, the outer circumferential surface of the pre-embedded sleeve 43 has a limiting disc 431 extending radially, which abuts against the outer side of the outer mold shell 1. The mold shell limiting device 4 abuts against the outer side of the outer mold shell 1 via the limiting disc 431, and against the side of the inner mold shell 2 via the nut 42 and the washer. The limiting disc 431 increases the contact area between the mold shell limiting device 4 and the outer mold shell 1, effectively preventing the outer mold shell 1 from tilting outward or bulging during concrete pouring, further improving the safety and stability of the building's energy-saving wall structure.

[0078] The two ends of the pre-embedded sleeve 43 are flush with the inner and outer sides of the outer mold shell 1, meaning the length of the pre-embedded sleeve 43 is the same as the thickness of the outer mold shell 1. The limiting plate 431 is located at the end of the pre-embedded sleeve 43 facing away from the screw 41, and the end of the pre-embedded sleeve 43 facing the screw 41 has an internal thread opening, so that the limiting plate 431 abuts against the outer side of the outer mold shell 1, and the internal thread opening is directly exposed on the inner side of the outer mold shell 1, which facilitates the connection between the screw 41 and the pre-embedded sleeve 43.

[0079] In this embodiment 2, the inner mold shell 2 is made of an insulation board with heat preservation function, which further enhances the heat preservation effect of the building's energy-saving wall structure.

[0080] Example 3

[0081] like Figure 5 and Figure 6As shown, the parts of the building energy-saving wall structure in this embodiment that are the same as those in Embodiment 2 will not be repeated; only the differences will be explained. In this Embodiment 3, the mold shell limiting device 4 also includes a limiting chuck 44. The limiting chuck 44 is located between the inner mold shell 2 and the outer mold shell 1 and is connected to the screw 41. The limiting chuck 44 abuts against the opposite sides of the outer mold shell 1 and / or the inner mold shell 2. The limiting chuck 44 effectively prevents the outer mold shell 1 and / or the inner mold shell 2 from tilting inward or bulging during concrete pouring. At the same time, with the two limiting chucks 44 abutting against the outer mold shell 1 and the inner mold shell 2 respectively, the distance between the outer mold shell 1 and the inner mold shell 2 can be adjusted, thereby achieving precise control of the thickness of the base wall and greatly improving the safety and stability of the building energy-saving wall structure.

[0082] In this embodiment 3, the outer circumferential surface of the screw 41 has an external thread, and the center position of the limiting chuck 44 has an internal thread hole. The limiting chuck 44 is connected to the screw 41 through the internal thread hole, so that the limiting chuck 44 and the screw 41 are connected by a thread, which is very convenient for installation and connection, and facilitates precise adjustment of the setting position of the limiting chuck 44 on the screw 41, thereby achieving precise control of the thickness of the base wall.

[0083] Example 4

[0084] like Figure 7 As shown, the parts of the building energy-saving wall structure in this embodiment that are the same as those in Embodiment 2 will not be repeated; only the differences will be explained. In this Embodiment 4, the outer circumferential surface of the pre-embedded sleeve 43 has a limiting disc 431 that protrudes in its radial direction. The limiting disc 431 does not abut against the outer side of the outer mold shell 1; instead, it is located inside the outer mold shell 1. By placing the limiting disc 431 inside the outer mold shell 1, the connection strength between the mold shell limiting device 4 and the outer mold shell 1 can be effectively strengthened. At the same time, it ensures that the outer mold shell 1 will not tilt inward or outward before or during concrete pouring, greatly improving the safety and stability of the building energy-saving wall structure. Furthermore, it eliminates the need to set a limiting disc on the side of the outer mold shell 1, improving installation efficiency and saving costs.

[0085] In this embodiment 4, the length of the embedded sleeve 43 is less than the thickness of the outer mold shell 1. The embedded sleeve 43 abuts against the side of the reinforcing mesh 12 facing away from the screw 41 via the limiting disc 431, resulting in high connection strength. The end of the embedded sleeve 43 facing the screw 41 has an internal thread opening, which is flush with the inner surface of the outer mold shell 1, allowing the internal thread opening to be directly exposed on the inner surface of the outer mold shell 1, facilitating the connection between the screw 41 and the embedded sleeve 43.

[0086] Example 5

[0087] like Figure 8As shown, the parts of the building energy-saving wall structure in this embodiment that are the same as those in Embodiment 1 will not be repeated; only the differences will be explained. In this Embodiment 5, the double-shell prefabricated component also includes a reinforcing member 6. The reinforcing member 6 is disposed on the opposite sides of the outer shell 1 and / or the inner shell 2 and connected to the shell limiting device 4. The reinforcing member 6 has a reinforcing function. By integrating the reinforcing member 6 on the opposite sides of the outer shell 1 and / or the inner shell 2, the structural strength of the double-shell prefabricated component can be further enhanced. At the same time, the leveling layer and / or plastering layer are connected to the opposite sides of the outer shell 1 and / or the inner shell 2. The leveling layer and / or plastering layer will completely cover and be connected to the reinforcing member 6. The reinforcing member 6 will further improve the overall strength of the leveling layer and / or plastering layer, further ensuring the safety and stability of the building energy-saving wall structure.

[0088] In this embodiment 5, the reinforcing component 6 is a reinforcing mesh structure, which can be pre-installed in the factory or installed on-site. The leveling layer and / or finishing layer can be formed by mechanical spraying or manual application. The screw 41 passes through the reinforcing mesh structure, which is pressed between the nut 42 and the washer.

[0089] Example 6

[0090] like Figure 9 As shown, the parts of the building energy-saving wall structure in this embodiment that are the same as those in Embodiment 5 will not be repeated; only the differences will be explained. In this Embodiment 6, the reinforcing component 6 is a rigid panel. By adding a rigid panel to the side of the inner mold shell 2, the overall bending strength, elastic modulus, and other mechanical properties of the inner mold shell 2 are further improved, thereby ensuring that it can withstand the pressure of concrete pouring; at the same time, the number of mold shell limiting devices 4 can be appropriately reduced, thus reducing the cost of the building energy-saving wall structure. The rigid panel can be calcium silicate board, cement fiberboard, etc.

[0091] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A prefabricated component with a dual-mold shell, characterized in that, It includes an outer mold shell, an inner mold shell, wall reinforcement bars, a mold shell limiting device, and several connecting components. The outer mold shell includes an insulation layer made of fire-resistant material with a Class A fire rating. The inner and outer mold shells are respectively disposed on the inner and outer sides of the wall reinforcement bars. The connecting components include metal connectors and a heat insulation material layer. The heat insulation material layer covers the outer surface of the metal connectors, and both the metal connectors and the heat insulation material layer penetrate the insulation layer from the outside. The insulation layer is constructed such that the connecting components are exposed on the inner side of the insulation layer and extend between the inner mold shell and the outer mold shell. The mold shell limiting device is connected to the wall reinforcement, and both ends of the mold shell limiting device are connected to the outer mold shell and the inner mold shell, so that concrete is poured between the outer mold shell and the inner mold shell and covers the wall reinforcement, thereby realizing that the wall reinforcement and the concrete form a base wall. The base wall is connected to the outer mold shell, the inner mold shell and several connecting components.

2. The prefabricated component with dual-mold shell as described in claim 1, characterized in that, The metal connector includes an anchor plate and an anchor rod. The anchor plate abuts against the outer side of the insulation layer. One end of the anchor rod is connected to the anchor plate, and the other end of the anchor rod passes through the insulation layer and is connected to the base wall. The thermal insulation material layer covers the outer surface of the anchor plate and the anchor rod. And / or, the insulation layer is a Class A fireproof insulation material composed of a single homogeneous material.

3. The prefabricated component with dual-mold shell as described in claim 1, characterized in that, The double-mold prefabricated component also includes a reinforcing member, which is disposed on the opposite side of the outer mold shell and / or the inner mold shell and connected to the mold shell limiting device. And / or, the material of the inner mold shell is one or more of the following: wooden template, metal template, high-strength cement fiberboard, UHPC board, metal non-removable template mesh, and insulation board with thermal insulation function; And / or, the insulation layer is made of graphene insulation material or polyurethane insulation material.

4. The prefabricated component with dual-mold shell as described in claim 1, characterized in that, The outer surface of the connecting component has an outwardly protruding blocking structure; And / or, the connecting component is connected to the wall reinforcement.

5. The prefabricated component with dual-mold shell as described in claim 1, characterized in that, The mold shell limiting device includes a screw and two nuts. The screw passes through the outer mold shell, the wall reinforcement and the inner mold shell, and the two ends of the screw are respectively connected to the two nuts so that the two nuts abut against the opposite sides of the outer mold shell and the inner mold shell respectively. Alternatively, the mold shell limiting device includes a pre-embedded sleeve, a screw, and a nut. The pre-embedded sleeve is disposed inside the outer mold shell. One end of the screw is connected to the pre-embedded sleeve, and the other end of the screw passes through the wall reinforcement and the inner mold shell and is connected to the nut, so that the nut abuts against the side of the inner mold shell. And / or, the outer mold shell further includes a reinforcing mesh, which is built into the insulation layer and / or placed on the surface of the insulation layer, and the connecting component passes through the reinforcing mesh.

6. The prefabricated component with dual-mold shell as described in claim 5, characterized in that, The outer peripheral surface of the pre-embedded sleeve has a limiting disc that protrudes in its radial direction, the limiting disc being located inside the outer mold shell and / or the limiting disc abutting against the outer surface of the outer mold shell; And / or, the connecting component is connected to the reinforcing mesh.

7. The prefabricated component with dual-mold shell as described in claim 5, characterized in that, The mold shell limiting device further includes a limiting chuck, which is located between the inner mold shell and the outer mold shell and connected to the screw, and the limiting chuck abuts against the opposite side of the outer mold shell and / or the inner mold shell.

8. A building energy-saving wall structure, characterized in that, It includes the double-shell prefabricated component as described in any one of claims 1-7 and the base wall formed by pouring concrete into the wall reinforcement.

9. The building energy-saving wall structure as described in claim 8, characterized in that, The base wall is constructed by casting concrete onto the wall reinforcement at the construction site or in a precast PC factory using a cast-in-place process. And / or, the building energy-saving wall structure further includes a leveling layer and / or a plastering layer, the leveling layer and / or plastering layer being connected to the opposite sides of the outer mold shell and / or the inner mold shell.

10. The building energy-saving wall structure as described in claim 9, characterized in that, The building energy-saving wall structure also includes a finishing layer, which is connected to the outer side of the plaster layer.

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