Prefabricated grooved thermal insulation laminated board

Abstract

The present application relates to the technical field of laminated slab, especially to a prefabricated slotting heat preservation laminated slab. The present application mainly aims at the quality problems of the gaps and hollowing easily occurring between the different material layers, which further affect the overall heat preservation and sound insulation effect, bring hidden dangers to the comfort of the building, cause the waste of concrete materials and increase the engineering cost. The present application proposes the following technical scheme: a first concrete layer constitutes a foundation bearing layer to provide a foundation support force for the upper structure; a steel mesh frame is embedded in the first concrete layer to strengthen the mechanical properties and disperse the stress, so that the bottom plate can bear greater load; a heat preservation and sound insulation layer is laid on the surface of the first concrete layer. The present application fully utilizes the advantages of the laminated slab, eliminates the cumbersome procedures of subsequent heat preservation and sound insulation construction and the difficulties and inconvenience caused by the installation of the concrete prefabricated plate with the hairline, significantly saves the amount of concrete, shortens the construction period and effectively reduces the engineering cost.

Description

Technical Field

[0001] This invention relates to the field of composite panel technology, and more particularly to a prefabricated grooved thermal insulation composite panel. Background Technology

[0002] In today's construction industry, with the rapid development of prefabricated building technology, precast concrete composite slabs are widely used as a key structural component. Traditional precast concrete composite slabs are usually composed of only simple concrete layers and steel reinforcement structures, and many problems have gradually emerged during actual construction and use.

[0003] On the one hand, to meet the thermal insulation and sound insulation requirements of buildings, the traditional approach is to apply thermal insulation and sound insulation materials after the precast panels are installed. This process is not only cumbersome, requiring a professional insulation construction team and consuming a lot of manpower, resources, and time, but also prone to quality problems such as gaps and hollow areas between different material layers due to the step-by-step construction, which in turn affects the overall thermal insulation and sound insulation effect and poses a threat to the comfort of the building.

[0004] On the other hand, in the connection and installation of precast slabs, traditional precast slabs often rely on reinforcing bars to connect with adjacent components. These reinforcing bars need to be pre-installed during precast slab production, which adds complexity to mold making and manufacturing processes, easily leading to inaccurate positioning and bending deformation of the reinforcing bars, resulting in installation difficulties on-site and extended construction periods. Furthermore, due to the structural characteristics of the reinforcing bars, a large amount of concrete is often required to enclose them at the connection points, resulting in concrete waste and increased project costs. Therefore, this invention proposes a precast grooved insulated composite slab. Summary of the Invention

[0005] The purpose of this invention is to address the quality problems in the prior art, such as gaps and hollow areas, that easily occur at the joints between different material layers, thereby affecting the overall thermal insulation and sound insulation effect, posing a threat to the comfort of the building, and causing waste of concrete materials and increasing project costs. The invention proposes a prefabricated grooved thermal insulation composite panel.

[0006] The technical solution of this invention: A precast slotted thermal insulation composite slab includes a first concrete layer, forming a foundation bearing layer to provide basic support for the upper structure; a steel mesh embedded in the first concrete layer to enhance mechanical properties and distribute stress, enabling the base slab to withstand greater loads; a thermal insulation and sound insulation layer laid on the surface of the first concrete layer, which blocks heat transfer and sound propagation; a second concrete layer poured above the thermal insulation and sound insulation layer, which works synergistically with the first concrete layer to enhance overall strength, with multiple sets of installation slots equidistantly arranged at both ends of the second concrete layer; protruding steel bars installed in the installation slots, which are used to connect with adjacent components; a cast-in-place layer poured on top of the second concrete layer; lifting rings snapped into the steel mesh, which penetrate the thermal insulation and sound insulation layer and the second concrete layer; two sets of positioning components installed on the second concrete layer, whose positions are fixed; and a fixing mechanism provided on the positioning components, which is used to simultaneously fix the positions of multiple sets of protruding steel bars.

[0007] Optionally, the steel mesh is woven from multiple sets of crisscrossing steel bars, and the installation groove is located between two adjacent sets of steel bars.

[0008] Optionally, the thermal insulation and sound insulation layer is composed of thermal insulation material and sound insulation material.

[0009] Optionally, the lifting ring is U-shaped, with its two ends bent to the same or different sides.

[0010] Optionally, the positioning component includes positioning grooves formed on both sides of the first concrete layer, the thermal insulation and sound insulation layer, and the second concrete layer. Positioning plates are installed in the positioning grooves. The positioning plates are L-shaped. A fixing plate is slidably connected to both sets of positioning plates. Positioning bolts are provided through both ends of the fixing plate. A positioning threaded sleeve is threaded to one end of the positioning bolt that passes through the fixing plate. The positioning threaded sleeve is fixedly connected to the side of the positioning plate away from the second concrete layer.

[0011] Optionally, the fixing mechanism includes multiple sets of first fixing sleeves fixedly connected to the fixing plate. The positions of the multiple sets of first fixing sleeves correspond to the positions of multiple sets of mounting slots. Limiting rods are fixedly connected to both sides of the first fixing sleeves. The limiting rods are L-shaped and have slidably connected to the limiting plates. A second fixing sleeve is fixedly connected between two sets of limiting plates. A movable plate is fixedly connected to all of the multiple sets of second fixing sleeves. A first pressing rod is fixedly connected to the bottom of the limiting plate. A first pressing block is installed on the end of the first pressing rod near the protruding reinforcing bar.

[0012] Optionally, multiple sets of locking components are installed on the fixing mechanism. The locking components are used to drive the moving plate closer to the second concrete layer, thereby driving the first extrusion block to extrude the protruding steel bar. At the same time, the locking components replace the first extrusion block at its position to fix the protruding steel bar.

[0013] Optionally, the locking assembly includes a third fixing sleeve fixedly connected to the outside of the movable plate, with pressing plates fixedly connected to both sides of the third fixing sleeve, a pressing bolt passing through the pressing plate, a pressing threaded sleeve threaded to one end of the pressing bolt, and a fourth fixing sleeve fixedly connected between the two sets of pressing threaded sleeves, the fourth fixing sleeve being installed on the outside of the fixing plate.

[0014] Optionally, a second extrusion rod is fixedly connected to the bottom of the extrusion plate, and a second extrusion block is installed at the end of the second extrusion rod near the protruding reinforcing bar. Both the first extrusion block and the second extrusion block have rough surfaces and are arc-shaped on the side near the protruding reinforcing bar.

[0015] Optionally, the thermal insulation and sound insulation layer has perforations at positions corresponding to the lifting rings.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] This invention effectively improves the thermal and sound insulation performance of composite floor slabs by setting up a thermal and sound insulation layer, while eliminating the need for secondary thermal and sound insulation construction. By placing the thermal and sound insulation layer between the first and second concrete layers, it ensures that the thermal and sound insulation layer is not damaged during construction, while reducing the self-weight of the composite slab, saving concrete usage, and lowering the cost of the composite slab. Through the perforation, the first concrete layer, the thermal and sound insulation layer, and the second concrete layer are connected into a whole by the perforated concrete columns, which effectively improves the overall load-bearing performance of the precast slab in the composite slab.

[0018] Furthermore, by setting up the installation groove and the extended steel bars, and by cooperating with the positioning components, fixing mechanisms, and locking components, the extended steel bars are easy to fix. After the cast-in-place layer is poured, it can ensure that the extended steel bars are reliably anchored to the second concrete layer. At the same time, the extended steel bars are functionally equivalent to the reinforcing bars, which makes the composite slab firmly connected to the adjacent components, effectively improving the integrity and safety of the precast monolithic concrete structure. It also simplifies the steel bar structure on the outside of the second concrete layer, avoids construction difficulties caused by steel bar conflicts, and greatly improves the installation efficiency of construction.

[0019] In summary, this invention fully leverages the advantages of composite slabs, eliminating the tedious procedures of subsequent thermal insulation and soundproofing construction and the difficulties and inconveniences caused by reinforcing bars to the installation of precast concrete slabs. At the same time, it significantly saves on concrete usage, shortens the construction period, and effectively reduces project costs. Attached Figure Description

[0020] Figure 1 A structural schematic diagram of a prefabricated slotted thermal insulation composite panel according to the present invention is provided;

[0021] Figure 2 This is a schematic diagram of the structure of the second concrete layer;

[0022] Figure 3 This is a structural diagram of the positioning component;

[0023] Figure 4 This is a structural diagram of the fixing mechanism;

[0024] Figure 5 This is a structural diagram of the locking component;

[0025] Figure 6 for Figure 2 Enlarged diagram of point A in the middle.

[0026] Figure label:

[0027] 1. First concrete layer; 11. Reinforcing steel mesh; 2. Thermal insulation and soundproofing layer; 3. Second concrete layer; 31. Installation groove; 4. Outward reinforcing steel; 5. Cast-in-place layer; 6. Lifting ring;

[0028] 7. Positioning assembly; 71. Positioning groove; 72. Positioning plate; 73. Fixing plate; 74. Positioning bolt; 75. Positioning threaded sleeve;

[0029] 8. Fixing mechanism; 81. First fixing sleeve; 82. Limiting rod; 83. Limiting plate; 84. Second fixing sleeve; 85. Moving plate; 86. First pressing rod; 87. First pressing block;

[0030] 9. Locking assembly; 91. Third fixing sleeve; 92. Extrusion plate; 93. Extrusion bolt; 94. Extrusion threaded sleeve; 95. Fourth fixing sleeve; 96. Second extrusion rod; 97. Second extrusion block. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example

[0037] like Figure 1 and Figure 2 As shown, the present invention proposes a prefabricated slotted insulated composite slab, comprising a first concrete layer 1, forming a foundation bearing layer to provide basic support for the upper structure. A steel mesh 11, embedded in the first concrete layer 1, is woven from multiple sets of crisscrossing steel bars to enhance mechanical properties and distribute stress, enabling the base slab to withstand greater loads. The mounting groove 31 is located between two adjacent sets of steel bars to improve overall structural strength and prevent areas with insufficient strength. An insulation and soundproofing layer 2, laid on the surface of the first concrete layer 1, blocks heat transfer and sound propagation; it is composed of a composite of insulation and soundproofing materials. A second concrete layer 3, poured above the insulation and soundproofing layer 2, works synergistically with the first concrete layer 1 to enhance overall strength. The insulation and soundproofing layer 2 effectively improves the insulation and soundproofing performance of the composite floor slab, while eliminating the need for secondary insulation and soundproofing construction. The thermal insulation and sound insulation layer 2 is set between the first concrete layer 1 and the second concrete layer 3, which can ensure that the thermal insulation and sound insulation layer 2 is not damaged during construction, while reducing the self-weight of the composite slab, saving the amount of concrete, and reducing the cost of the composite slab.

[0038] Multiple sets of installation slots 31 are equidistantly arranged at the top of both ends of the second concrete layer 3. Outward reinforcing bars 4 are installed in the installation slots 31. The outward reinforcing bars 4 are used to connect with adjacent components. By installing the outward reinforcing bars 4 later, the steel reinforcement structure at the support is simplified, and construction difficulties caused by steel reinforcement conflicts are avoided, which greatly improves the installation efficiency of the construction.

[0039] Furthermore, the aforementioned composite slab also includes a cast-in-place layer 5 poured on top of the second concrete layer 3. After the extended reinforcing bars 4 are placed in the installation groove 31, the cast-in-place layer 5 can ensure reliable anchoring between the extended reinforcing bars 4 and the precast concrete slab after its completion. The extended portion of the extended reinforcing bars 4 is functionally equivalent to the reinforcing bars, so that the whole formed by the first concrete layer 1, the thermal insulation and sound insulation layer 2, and the second concrete layer 3 is firmly connected with the cast-in-place layer 5 and adjacent components, effectively improving the integrity and safety of the precast concrete structure.

[0040] Furthermore, the aforementioned composite slab also includes lifting rings 6 snapped into the steel mesh frame 11. The lifting rings 6 penetrate the thermal insulation and soundproof layer 2 and the second concrete layer 3. The lifting rings 6 are U-shaped, with both ends bent to the same or opposite sides to increase the contact area, optimize stress distribution, and improve the stability of the connection between the lifting rings 6 and the steel mesh frame 11 and the first concrete layer 1. Perforations are provided on the thermal insulation and soundproof layer 2 at positions corresponding to the lifting rings 6. These perforations can be circular, elliptical, rectangular, triangular, rhomboid, or quincunx-shaped, connecting the first concrete layer 1, the thermal insulation and soundproof layer 2, and the second concrete layer 3 into a unified whole through the concrete columns formed by the perforations. This effectively improves the overall load-bearing performance of the precast slab in the composite slab.

[0041] For details, please refer to Figure 3 The aforementioned composite slab includes two sets of positioning components 7 installed on the second concrete layer 3, and the positions of the positioning components 7 are fixed. Each positioning component 7 includes positioning grooves 71 formed on both sides of the first concrete layer 1, the thermal insulation and soundproofing layer 2, and the second concrete layer 3. Positioning plates 72 are installed in the positioning grooves 71, and the positioning plates 72 are L-shaped. The positioning grooves 71 position the positioning plates 72. A fixing plate 73 is slidably connected to both sets of positioning plates 72. Positioning bolts 74 are threaded through both ends of the fixing plate 73. A positioning threaded sleeve 75 is threaded to one end of the positioning bolt 74 that passes through the fixing plate 73. The positioning threaded sleeve 75 fixes the positioning plate 72 to the side away from the second concrete layer 3. Tightening the positioning bolts 74 fixes the relative position of the fixing plate 73 and the positioning plate 72, and the fixing plate 73 cooperates with the positioning plate 72 to lock onto the top of the second concrete layer 3.

[0042] In this embodiment, as Figure 4 and Figure 6As shown, the composite plate also includes a fixing mechanism 8 disposed on the positioning component 7. The fixing mechanism 8 is used to simultaneously fix the positions of multiple sets of protruding reinforcing bars 4. The fixing mechanism 8 includes multiple sets of first fixing sleeves 81 fixedly connected to the fixing plate 73. The positions of the multiple sets of first fixing sleeves 81 correspond to the positions of multiple sets of mounting slots 31. Limiting rods 82 are fixedly connected to both sides of the first fixing sleeves 81, and the positions of the first fixing sleeves 81 and the limiting rods 82 are fixed. The limiting rods 82 are L-shaped, and limiting plates 83 are slidably connected to the limiting rods 82. Second fixing sleeves 84 are fixedly connected between the two sets of limiting plates 83. The second fixing sleeves 84 move smoothly under the limiting action of the limiting rods 82 and the limiting plates 83. A moving plate 85 is fixedly connected to all the multiple sets of second fixing sleeves 84. When the moving plate 85 moves, it drives the multiple sets of second fixing sleeves 84 to move synchronously. A first pressing rod 86 is fixedly connected to the bottom of the limiting plate 83. A first pressing block 87 is installed on the end of the first pressing rod 86 near the protruding reinforcing bar 4. When the second fixing sleeve 84 moves, it drives the first pressing rod 86 to move through the limiting plate 83, and at the same time drives the first pressing block 87 to press the protruding reinforcing bar 4 to fix it. The side of the first pressing block 87 near the protruding reinforcing bar 4 has a rough surface and is arc-shaped to ensure that the protruding reinforcing bar 4 does not slide after the first pressing block 87 fixes the protruding reinforcing bar 4, thus ensuring the stability of the position of the protruding reinforcing bar 4.

[0043] For further details, please refer to Figure 5 and Figure 6 The aforementioned composite plate also includes multiple sets of locking components 9 installed on the fixing mechanism 8. The locking components 9 are used to drive the moving plate 85 closer to the second concrete layer 3, thereby driving the first extrusion block 87 to extrude the protruding reinforcing bar 4. At the same time, the locking components 9 replace the first extrusion block 87 in its position to fix the protruding reinforcing bar 4. The locking components 9 include a third fixing sleeve 91 fixedly connected to the outside of the moving plate 85. When the third fixing sleeve 91 moves, it drives the moving plate 85 to move. Extrusion plates 92 are fixedly connected to both sides of the third fixing sleeve 91. Extrusion bolts 93 are provided through the extrusion plates 92. One end of the extrusion bolts 93 is threadedly connected to an extrusion threaded sleeve 94. A fourth fixing sleeve 95 is fixedly connected between the two sets of extrusion threaded sleeves 94. The fourth fixing sleeve 95 is installed on the outside of the fixing plate 73. The position of the fourth fixing sleeve 95 and the extrusion threaded sleeve 94 is fixed. It is used to drive the moving plate 85 closer to the second concrete layer 3 through the third fixing sleeve 91 and the extrusion plate 92 after the extrusion bolts 93 are tightened. The bottom of the extrusion plate 92 is fixedly connected to a second extrusion rod 96. A second extrusion block 97 is installed at one end of the second extrusion rod 96 near the protruding reinforcing bar 4. The side of the second extrusion block 97 near the protruding reinforcing bar 4 has a rough surface and is arc-shaped. When the moving plate 85 approaches the second concrete layer 3, it drives the second extrusion block 97 to extrude the protruding reinforcing bar 4 and fix its position. The rough surface prevents the protruding reinforcing bar 4 from sliding.

[0044] In this embodiment, molds for producing the first concrete layer 1, the thermal insulation and soundproof layer 2, and the second concrete layer 3 precast slabs are arranged on a factory production mold platform. A steel mesh frame 11 and lifting rings 6 are arranged within the mold, with the horizontal ends of the lifting rings 6 positioned below the steel mesh frame 11. Concrete is poured to complete the production of the first concrete layer 1. Thermal insulation and soundproof material is laid and fixed to form the thermal insulation and soundproof layer 2. The perforation positions are determined based on the positions of the lifting rings 6. Concrete pouring continues to complete the production of the second concrete layer 3. After curing and demolding, the precast slabs are completed. The precast slabs are hoisted on-site and connected to vertical support beams or walls. Outer reinforcing bars 4 are sequentially placed in the installation grooves 31, with the length of the outward extension of the reinforcing bars 4 extending beyond the slab end being equal to the length of the existing reinforcing bar technology. A fixing plate 73 is placed on top of the second concrete layer 3, while multiple sets of first fixing sleeves 81 and fourth fixing sleeves 95 are respectively engaged in the positions of multiple sets of installation grooves 31. Two sets of positioning plates 72 are fitted onto both ends of the fixed plate 73. Positioning bolts 74 pass through the fixed plate 73 and are threaded into the positioning threaded sleeve 75 to fix the position of the fixed plate 73, thus fixing the fixed plate 73 to the top of the second concrete layer 3. Then, the extrusion bolt 93 is rotated to move the extrusion plate 92 downward. When the extrusion plate 92 moves downward, it drives the second extrusion block 97 through the second extrusion rod 96 to extrude and fix the protruding reinforcing bars 4. At the same time, as the extrusion plate 92 moves, it drives the third fixed sleeve 91 and the moving plate 85 to move downward synchronously. Multiple sets of limiting plates 83 move downward synchronously and drive the first extrusion block 87 through the first extrusion rod 86 to extrude and fix the other protruding reinforcing bars 4, ensuring the stability of the position of the protruding reinforcing bars 4. Finally, using the precast slab and the vertical support beam or wall as templates, concrete is poured on the upper part of the second concrete layer 3 to form a cast-in-place layer 5, so that the precast slab and the cast-in-place layer 5 form a concrete composite slab.

[0045] The above specific embodiments are merely optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A prefabricated grooved thermal insulation composite slab, characterized in that, The utility model relates to a kind of reinforced concrete structures, including: First concrete layer (1), constituting foundation bearing layer, providing foundation support force for upper structure; Reinforcing mesh frame (11) buried in the first concrete layer (1), for strengthening mechanical properties, dispersing stress, so that the bottom plate can withstand greater load; Laid on the surface of the first concrete layer (1) heat insulation and sound insulation layer (2), the heat insulation and sound insulation layer (2) is used to block heat transfer and sound propagation; Second concrete layer (3) poured above the heat insulation and sound insulation layer (2), the second concrete layer (3) cooperates with the first concrete layer (1), enhances overall strength, and a plurality of groups of installation slots (31) are provided at equal intervals at the top of both ends of the second concrete layer (3); External reinforcement (4) installed in the installation slot (31), the external reinforcement (4) is used to connect with adjacent components; Cast-in-place layer (5) poured on the top of the second concrete layer (3); Lifting ring (6) clamped in the reinforcing mesh frame (11), the lifting ring (6) penetrates the heat insulation and sound insulation layer (2) and the second concrete layer (3); Two groups of positioning assemblies (7) installed on the second concrete layer (3), the position of the positioning assembly (7) is fixed, the positioning assembly (7) includes positioning slots (71) provided on both sides of the first concrete layer (1), the heat insulation and sound insulation layer (2) and the second concrete layer (3), the positioning plate (72) is installed in the positioning slot (71), the positioning plate (72) is provided in L shape, two groups of the positioning plate (72) are commonly connected with the fixed plate (73) in sliding mode, the positioning bolt (74) is provided at both ends of the fixed plate (73) in penetrating mode, one end of the positioning bolt (74) penetrating the fixed plate (73) is threadedly connected with the positioning threaded sleeve (75), the positioning threaded sleeve (75) is fixedly connected to the side of the positioning plate (72) away from the second concrete layer (3); Fixing mechanism (8) provided on the positioning assembly (7), the fixing mechanism (8) is used to fix the position of a plurality of external reinforcements (4) at the same time, the fixing mechanism (8) includes a plurality of first fixing sleeves (81) fixedly connected to the fixed plate (73), the positions of a plurality of the first fixing sleeves (81) correspond to the positions of a plurality of installation slots (31) respectively, the limiting rod (82) is fixedly connected to both sides of the first fixing sleeve (81), the limiting rod (82) is provided in L shape, the limiting plate (83) is connected to the limiting rod (82) in sliding mode, the second fixing sleeve (84) is fixedly connected between two groups of the limiting plate (83), the moving plate (85) is commonly fixedly connected in a plurality of the second fixing sleeves (84), the first extrusion rod (86) is fixedly connected to the bottom of the limiting plate (83), and the first extrusion block (87) is installed on one end of the first extrusion rod (86) close to the external reinforcement (4); A plurality of locking assemblies (9) are installed on the fixing mechanism (8), and the locking assemblies (9) are used to drive the moving plate (85) to be close to the second concrete layer (3) so as to drive the first extrusion block (87) to extrude the external reinforcing steel bars (4), and meanwhile, the locking assemblies (9) replace the first extrusion blocks (87) at the positions of the locking assemblies (9) to fix the external reinforcing steel bars (4), the locking assembly (9) comprises a third fixing sleeve (91) which is fixedly connected to the outer side of the moving plate (85), both sides of the third fixing sleeve (91) are fixedly connected with extrusion plates (92), the extrusion plates (92) are provided with extrusion bolts (93) penetrating therethrough, one end of the extrusion bolt (93) is threadedly connected with an extrusion threaded sleeve (94), two groups of the extrusion threaded sleeves (94) are fixedly connected with a fourth fixing sleeve (95), and the fourth fixing sleeve (95) is installed on the outer side of the fixing plate (73).

2. The prefabricated slot-heat-preservation laminated board according to claim 1, characterized in that, The steel mesh frame (11) is woven by a plurality of longitudinal and transverse intersecting steel bars, and the installation groove (31) is arranged at the position between the adjacent two groups of steel bars.

3. The prefabricated slot-heat insulation composite board according to claim 2, characterized in that, The heat preservation and sound insulation layer (2) is composed of heat preservation material and sound insulation material.

4. The prefabricated slot-heat-preservation laminated board according to claim 3, characterized in that, The lifting ring (6) is provided in a U shape, and both ends of the lifting ring (6) are bent to the same side or different sides.

5. The prefabricated slot-heat-insulation laminated slab according to claim 4, characterized in that, The extrusion plate (92) is fixedly connected with a second extrusion rod (96) at the bottom, one end of the second extrusion rod (96) close to the external reinforcing steel bars (4) is installed with a second extrusion block (97), and the first extrusion block (87) and the second extrusion block (97) are both provided in an arc shape and have rough surfaces on the side close to the external reinforcing steel bars (4).

6. The prefabricated slot-heat-insulation laminated board according to claim 5, characterized in that, Perforations are arranged on the heat preservation and sound insulation layer (2) at positions corresponding to the lifting rings (6).

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