Thermal and sound insulation laminated board

Abstract

The utility model relates to a kind of thermal insulation and sound insulation laminated board, including prefabricated base course, from bottom to top include lower layer mesh cloth, concrete structure layer, upper layer mesh cloth and micro elastic sound insulation and heat preservation mortar layer;Embedded fastening system, its embedded part is fixedly arranged in the prefabricated base course, the embedded part has sleeve with internal thread;Detachable connecting structure, including main body, the truss connecting groove for embedding steel bar truss is equipped on the main body, bottom is provided with the fastening connecting hole corresponding with the position of embedded fastening system;By setting the detachable connecting mechanism of the bottom with multiple fastening connecting holes, side is U type structure and top end is with anti-drop part, the quick detachable connection of steel bar truss and prefabricated base course is realized, anti-drop part can effectively prevent accidental drop in construction, multiple equidistant connecting holes provide the flexibility of installation position adjustment, realize the separate production and transportation of prefabricated base course and steel bar truss, greatly improve transfer efficiency and convenience.

Description

Technical Field

[0001] This utility model belongs to the field of composite panels, specifically designing a thermal insulation and soundproof composite panel. Background Technology

[0002] In the field of industrialized building construction, composite floor slabs, as a common prefabricated component, consist of a precast base layer and a cast-in-place concrete layer, offering advantages such as high construction efficiency and good overall integrity. However, existing composite slab systems still have many limitations. The steel truss and precast base layer are often precast as a single unit, resulting in bulky and irregularly shaped components that cause significant inconvenience for transportation, stacking, and on-site hoisting. Furthermore, the truss is prone to deformation or the base layer to be damaged during transportation. In addition, the connection between the two is irreversible once completed at the precast plant, resulting in poor on-site construction flexibility. Damage to the connection point necessitates replacing the entire component, leading to high maintenance costs. Finally, the precast base layer itself is prone to cracking due to shrinkage stress, and the surface plaster often suffers from quality problems such as hollowing and peeling, affecting structural safety and durability.

[0003] Therefore, there is an urgent need in this field for a new type of composite plate system that can guarantee structural and physical performance, enable convenient transportation and rapid assembly, and also have good crack resistance and maintainability. Utility Model Content

[0004] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a thermal insulation and sound insulation composite board.

[0005] The technical solution adopted in this utility model includes: The precast base layer consists of, from bottom to top, a lower layer of mesh fabric, a concrete structural layer, an upper layer of mesh fabric, and a micro-elastic sound-insulating and heat-insulating mortar layer; An embedded fastening system, wherein the embedded parts are fixedly installed in the precast base layer, and the embedded parts have sleeves with internal threads; A detachable connection structure includes a main body, on which a truss connection groove for embedding a steel truss is provided, and a fastening connection hole corresponding to the position of the pre-embedded fastening system is opened at the bottom; the detachable connection structure is connected to the internal threaded sleeve of the pre-embedded part by fasteners passing through the fastening connection hole, for the fixed connection of the steel truss and the precast base.

[0006] Furthermore, the lower mesh fabric is embedded into the bottom of the concrete structure layer by pouring concrete after being laid on the template surface; the upper mesh fabric is laid on the initial set surface of the concrete structure layer and is bonded and fixed to the concrete structure layer by covering and pouring the micro-elastic sound insulation and heat insulation mortar layer.

[0007] Furthermore, the upper mesh fabric consists of one layer, and the lower mesh fabric consists of two layers.

[0008] Furthermore, the height of the upper end of the sleeve does not exceed the upper surface of the precast base layer.

[0009] Furthermore, the embedded part is an expansion screw or a metal toothed expansion screw.

[0010] Furthermore, the embedded parts are pre-embedded by drilling holes after the concrete has solidified, or by wrapping them with a film bag during pouring.

[0011] Furthermore, the main body of the detachable connection structure has a U-shaped side; the upper end of the truss connection groove is open, and its two top ends extend relative to each other to form an anti-detachment part.

[0012] Furthermore, the fastening connection holes are provided at equal intervals along the length direction of the bottom of the main body.

[0013] Furthermore, the joints between the thermal insulation and soundproof composite panels are filled with sealant.

[0014] The beneficial effects of this utility model are as follows: This utility model, as a thermal insulation and soundproof composite panel, achieves a quick and detachable connection between the steel truss and the precast base by setting a detachable connection mechanism with multiple fastening connection holes at the bottom, a U-shaped structure on the side, and an anti-detachment part at the top. The anti-detachment part can effectively prevent accidental detachment during construction, and the multiple equidistant connection holes provide flexibility for adjusting the installation position. It realizes the separate production and transportation of the precast base and the steel truss, which greatly improves the efficiency and convenience of transportation.

[0015] The concrete structural layer serves as the core load-bearing layer, providing structural strength and stiffness. The lower mesh fabric is embedded in the bottom of the concrete, effectively absorbing and dispersing shrinkage stress and load, thus strengthening the crack resistance of the core stress area of ​​the precast base. The upper mesh fabric is combined with the micro-elastic sound insulation and heat insulation mortar layer, which not only prevents the surface layer from cracking and falling off, but also achieves sound insulation and heat insulation performance, improving the overall physical performance and energy-saving effect of the building. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the pre-embedded fastening system and detachable connection structure of this utility model; Figure 3 This is a side view of the pre-embedded fastening system and detachable connection structure of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Precast base layer; 11. Lower layer of mesh fabric; 12. Concrete structural layer; 13. Upper layer of mesh fabric; 14. Micro-elastic sound-insulating and heat-insulating mortar layer; 15. Reinforcing components; 2. Embedded fastening system; 21. Sleeve; 22. Fastener; 23. Truss connection groove; 24. Fastening connection hole; 25. Anti-detachment part; 3. Detachable connection structure; 31. Main body; 4. Steel truss. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] The following is combined with Figure 1-3 This invention describes a specific embodiment of a thermal insulation and soundproof composite board, comprising: The precast base layer 1 comprises, from bottom to top, a lower mesh fabric 11, a concrete structural layer 12, an upper mesh fabric 13, and a micro-elastic sound-insulating and thermally insulating mortar layer 14. The concrete structural layer 12 serves as the load-bearing layer, providing the main structural strength, stiffness, and stability. The lower mesh fabric 11 is embedded in the bottom of the concrete to improve crack resistance and enhance stress absorption, effectively dispersing the stress generated by concrete shrinkage and loads, and preventing large-area cracks in the concrete structural layer 12. The upper mesh fabric 13 is laid on top of the concrete structural layer 12, its function being to prevent cracking of the micro-elastic sound-insulating and thermally insulating mortar layer 14 and to firmly bond it to the concrete structural layer 12 as a whole, preventing peeling and detachment. The micro-elastic sound-insulating and thermally insulating mortar layer 14 has a certain degree of flexibility, capable of absorbing and buffering vibration and deformation stress, further improving the crack resistance of the entire base layer; it also has sound insulation properties, filling pores, increasing mass, effectively blocking airborne sound transmission, and improving the sound insulation effect of the floor slab; in addition, it has thermal insulation properties, reducing the thermal conductivity coefficient of the base layer, playing a role in thermal insulation and improving the building's energy-saving effect.

[0022] The pre-embedded fastening system 2 has pre-embedded parts fixedly installed in the precast base layer 1. The pre-embedded parts have sleeves 21 with internal threads. The sleeves 21 with internal threads are pre-embedded by drilling holes during or after the base layer is made, so that they are permanently fixed therein. That is, a strong nut or anchor point is pre-embedded in the base layer. This provides a reliable connection foundation for the steel truss 4 on the precast base layer 1 and provides a precise and firm connection point for the installation of the detachable connection structure 3 above. The internal threads can be fastened by using fasteners. This ensures that the load is effectively transferred. The load of the steel truss 4 and the floor slab above it is effectively transferred to the solid precast base layer 1 through the pre-embedding, thus ensuring structural safety.

[0023] The detachable connection structure 3 includes a main body 31, on which a truss connection groove 23 for embedding the steel truss 4 is provided, and a fastening connection hole 24 corresponding to the position of the pre-embedded fastening system 2 is opened at the bottom. The detachable connection structure 3 is connected to the internal threaded sleeve 21 of the pre-embedded part through the fastening connection hole 24 by fasteners 22, for the fixed connection of the steel truss 4 and the precast base layer 1. The detachable connection structure 3 serves as a connector, with one end connected to the pre-embedded part of the base layer and the other end clamping the steel truss 4. The shape of the truss 4 and the truss connection groove 23 are adapted to the lower chord of the steel truss 4, which can quickly and accurately position and embed the steel truss 4, simplify the construction process, realize the prefabrication of the precast base 1 and the steel truss 4 without integration, and realize the rapid assembly of the steel truss 4 between the precast base 1 during on-site use, improving the convenience of transporting and transferring the composite slab; the fastening connection hole 24 is aligned with the position of the embedded part, and the steel truss 4 is detachably installed and connected to the precast base 1 by the fastener 22.

[0024] Please refer to Figure 1As shown, the lower mesh fabric 11 is embedded into the bottom of the concrete structural layer 12 after being laid on the template surface and then concrete is poured. The upper mesh fabric 13 is laid on the initial set surface of the concrete structural layer 12 and is bonded and fixed to the concrete structural layer 12 by covering and pouring the micro-elastic sound insulation and heat-insulating mortar layer 14. During the prefabrication of the precast base layer 1, the lower mesh fabric 11 is laid on the template first, and then the concrete is poured. This ensures that the mesh fabric is located at the bottom of the concrete structural layer 12, giving full play to its tensile strengthening effect. The bottom of the concrete structural layer 12 is an area prone to tensile stress and cracks due to bending. By placing the mesh fabric here, the generation and propagation of cracks can be most effectively suppressed. Laying the upper mesh fabric 13 when the concrete is initially set allows the upper mesh fabric 13 to be bonded to the concrete structural layer 12. This creates good mechanical interlocking and bonding. The subsequently poured micro-elastic mortar will wrap around and penetrate the upper mesh 13. After it hardens, the concrete structure layer 12, the upper mesh 13, and the micro-elastic sound insulation and heat insulation mortar layer 13 form a solid whole, preventing the mortar layer from hollowing out or falling off. It should be noted that the micro-elastic sound insulation and heat insulation mortar layer 13 is formed by adding redispersible latex powder such as VAE emulsion and elastic emulsion to inorganic cementitious materials such as cement and sand. After the mortar is hydrated and cured, the polymer will form an elastic micro-film network structure. This network is interwoven and composite with the rigid structure of cement stone, thereby giving the entire material micro-elastic properties. This gives the concrete structure layer 12 heat insulation, sound insulation, and micro-flexible surface properties. This is a conventional technology and will not be described in detail here.

[0025] Please refer to Figure 1 As shown, the upper mesh fabric 13 consists of one layer, and the lower mesh fabric 11 consists of two layers; The lower layer of mesh fabric 11 is a double-layer mesh fabric because the bottom slab of the concrete structural layer 12 is the main tension zone, which bears the greatest bending tensile stress. Therefore, it needs stronger reinforcement. Using a double-layer mesh fabric can significantly improve the crack resistance and load-bearing capacity of this area. The upper layer of mesh fabric 13 is a single-layer mesh fabric to prevent cracking of the micro-elastic sound insulation and heat insulation mortar layer 14 and to play a reinforcing transition role. The stress requirement is relatively small, and a single layer can meet the requirements, while taking into account economy and construction convenience.

[0026] Please refer to Figures 1-2 As shown, the upper end of the sleeve 21 does not exceed the upper surface of the precast base layer 1; this prevents the sleeve 21 from protruding from the base layer surface, thereby avoiding affecting the overall thickness of the precast base layer 1, and enabling the stacking, transportation and transfer of multiple precast base layers 1, avoiding the impact of protrusions on stacking.

[0027] Please refer to Figures 1-3As shown, the embedded part is an expansion screw or a metal toothed expansion screw; the embedded part is used to provide high pull-out resistance, wherein the sleeve 21 of the embedded part is embedded in the precast base layer 1. When the fastener 22 is screwed into the sleeve 21 of the embedded part, the lower end of the sleeve 21 expands axially to form a mechanical interlocking force, ensuring that it will not be pulled out when subjected to upward pulling force. The embedded part can be an expansion screw or a metal toothed expansion screw, both of which are existing technologies, and both include a sleeve 21 and a fastener 22 that is threaded with the sleeve 21.

[0028] Please refer to Figure 1 As shown, the embedded part is pre-embedded by drilling after the concrete has solidified, or by wrapping it with a thin film bag during pouring to prevent fluid from flowing into the sleeve 21 and clogging the internal threads during pouring. By using a thin plastic film for pre-embedding, clogging of the internal threads can be avoided. At the same time, due to its low thickness and the large change in the outward expansion diameter at the bottom of the sleeve 21, it will not affect the mechanical interlocking force.

[0029] Please refer to Figures 2-3 As shown, the main body 31 of the detachable connection structure 3 has a U-shaped side; the upper end of the truss connection groove 23 is open, and its two ends extend relative to each other to form an anti-detachment part 25. During the installation of the steel truss 4, since the length of the truss connection groove 23 is slightly smaller than the width of the steel truss 4, it can be placed on the end face of the truss connection groove 23. After the truss is placed, the anti-detachment part 25 forms a limiting structure, which can prevent the truss from accidentally coming out of the groove when subjected to vibration or lifting force.

[0030] Please refer to Figure 2 As shown, multiple fastening connection holes 24 are provided at equal intervals along the length direction of the bottom of the main body to improve the stability of the steel truss 4 connection.

[0031] Please refer to Figure 1 As shown, the joints between the thermal insulation and sound insulation composite panels are filled with sealant, which is expanding foam or other filler material.

[0032] Working principle: The precast base layer 1 is prefabricated in the factory or on site and is formed by a multi-layer composite structure. The concrete structural layer 12 serves as the core load-bearing body 31, providing the main rigidity and strength. Its bottom is reinforced by the lower mesh 11, which effectively inhibits concrete shrinkage and cracks caused by stress. Its upper part is combined with the upper mesh 13 and the micro-elastic sound insulation and heat insulation mortar layer 14, which not only solves the risk of surface cracking and hollowing, but also gives the composite slab sound insulation and heat insulation properties.

[0033] The pre-embedded fastening system 2 is precisely fixed in the precast base layer 1 as the connection base. The pre-embedded parts can be installed by post-drilling or pre-embedding during pouring. The pre-embedded sleeve 21 ensures that its upper end does not exceed the upper surface of the base layer, ensuring the flatness of the base layer and facilitating stacking and transportation. When the pre-embedded part is an expansion fish scale ceiling screw or a metal toothed expansion screw, the lower end of the sleeve 21 expands radially during the screwing of its fastener 22, generating a strong mechanical interlocking force with the surrounding concrete, thereby forming an anchor point with high pull-out resistance.

[0034] During on-site construction, a detachable connection mechanism enables a quick and reliable connection between the steel truss 4 and the precast base 1. The main body 31 is securely connected to the sleeve 21 embedded in the base 1 using bolts through multiple equidistant fastening connection holes 24 at its bottom. Subsequently, the lower chord of the steel truss 4 is inserted from the side into the U-shaped truss connection groove 23 at the upper end of the connection mechanism. The anti-detachment part 25 at the top of the groove effectively prevents the steel truss 4 from coming off due to vibration or lifting during subsequent construction, ensuring connection safety. Finally, the connection between the steel truss 4 and the precast main body 31 is achieved. By using a prefabricated connection, the two can be transported and handled separately, improving transportation and transfer efficiency. The floor load is transferred to the steel truss 4, then to the pre-embedded fastening system 2 via the detachable connection mechanism, and finally diffused to the entire precast base 1.

[0035] The prefabrication and rapid on-site assembly of the composite slab ensures structural performance, physical properties and durability, while effectively improving construction efficiency and providing convenience for transportation and subsequent maintenance and renovation.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims of this application, they should all fall within the protection scope of this utility model.

Claims

1. A thermal insulation and soundproof composite board, characterized in that, include: The precast base layer (1) consists of, from bottom to top, a lower mesh fabric (11), a concrete structure layer (12), an upper mesh fabric (13), and a micro-elastic sound insulation and heat preservation mortar layer (14); The embedded fastening system (2) has embedded parts fixedly installed in the precast base layer (1), and the embedded parts have sleeves (21) with internal threads; The detachable connection structure (3) includes a main body (31), on which a truss connection groove (23) for embedding the steel truss (4) is provided, and a fastening connection hole (24) corresponding to the position of the pre-embedded fastening system (2) is opened at the bottom; the detachable connection structure (3) is connected to the internal threaded sleeve (21) of the pre-embedded part by fasteners (22) passing through the fastening connection hole (24) for the fixed connection of the steel truss (4) and the precast base layer (1).

2. The thermal insulation and soundproof composite board according to claim 1, characterized in that: The lower mesh fabric (11) is embedded into the bottom of the concrete structure layer (12) by pouring concrete after being laid on the template surface; the upper mesh fabric (13) is laid on the initial set surface of the concrete structure layer (12) and is bonded and fixed to the concrete structure layer (12) by covering and pouring the micro-elastic sound insulation and heat insulation mortar layer (14).

3. The thermal insulation and soundproof composite board according to claim 1, characterized in that: The upper mesh fabric (13) consists of one layer, and the lower mesh fabric (11) consists of two layers.

4. The thermal insulation and soundproof composite board according to claim 3, characterized in that: The height of the upper end of the sleeve (21) does not exceed the upper surface of the prefabricated base layer (1).

5. The thermal insulation and soundproof composite board according to claim 4, characterized in that: The embedded parts are expansion screws or metal toothed expansion screws.

6. The thermal insulation and soundproof composite board according to claim 1, characterized in that: The embedded parts are either pre-embedded by drilling holes after the concrete has solidified, or pre-embedded by wrapping them with a film bag during pouring.

7. The thermal insulation and soundproof composite board according to claim 1, characterized in that: The main body (31) of the detachable connection structure (3) has a U-shaped side; the upper end of the truss connection groove (23) is open, and its top two ends extend relative to each other to form an anti-detachment part (25).

8. The thermal insulation and soundproof composite board according to claim 1, characterized in that: The fastening connection holes (24) are provided at equal intervals along the length direction of the bottom of the main body.

9. The thermal insulation and soundproof composite board according to claim 1, characterized in that: The joints between the thermal insulation and soundproof composite panels are filled with sealant.

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