Concrete outer wall decoration hanging plate suspension fixing device and installation method

Abstract

The application discloses a concrete outer wall decoration hanging plate suspension fixing device and a mounting method, and belongs to the field of building outer wall decoration engineering. The device comprises a floor edge beam, an outer wall decoration hanging plate, a square tube stand column, a hanging leg, a supporting bracket, a connecting bolt, a lock hook and a thermal insulation layer. The square tube stand column is connected with the supporting short bracket embedded in the upper surface of the floor edge beam to bear the vertical load, and the side connecting angle steel and chemical bolt bear the horizontal load, so that the load is separated and carried. The hanging leg and the hanging plate are integrally formed, the lock hook is used for limiting and preventing the outward inclination, the thermal insulation layer is integrated with the hanging plate through the tongue-and-groove joint, and the hanging plate joint seam is provided with a double waterproof structure of "sealing glue+tongue-and-groove shielding / water-swelling water stop strip". The mounting method comprises construction preparation, square tube stand column assembly installation, hanging plate pretreatment, hanging and waterproof treatment, and the core component is prefabricated in a factory, and cutting and welding are not needed on site. The application has the advantages of high structural safety redundancy, reliable waterproof, efficient and environment-friendly installation, no need to remove the original decoration layer of the existing building, and suitability for new building outer wall decoration and existing building outer wall reinforcement and reconstruction, and effectively solves the problems of great safety hidden danger, serious pollution and long construction period of the traditional scheme.

Description

Technical Field

[0001] This invention belongs to the technical field of building exterior wall decoration engineering, specifically relating to a concrete exterior wall decoration hanging board suspension and fixing device and a suitable installation method, applicable to the exterior wall decoration of new buildings and the reinforcement and renovation of existing building exterior walls. Background Technology

[0002] The safety, durability, and waterproofing performance of building exterior wall decoration layers are key technical indicators for construction projects. Currently, traditional exterior wall decoration solutions have many drawbacks: on the one hand, exterior wall plaster and decorative bricks are prone to detachment; on the other hand, when renovating existing building exteriors, the original decorative layer must be completely removed, generating a large amount of construction waste, dust, and noise, polluting the environment and affecting the use of the building's interior, posing safety hazards for high-altitude operations, and resulting in long construction periods and high costs.

[0003] Existing wall panel fixing devices mostly adopt a single load-bearing structure, which has insufficient connection reliability and is prone to loosening due to temperature stress, vibration, etc. Waterproofing design is mostly a single-layer seal, and the sealant will age and crack after long-term use, which can easily lead to leakage. At the same time, installation stress is easily generated during the installation of the panels, which affects the structural stability and has poor adaptability, making it difficult to meet the needs of both new buildings and renovations of existing buildings.

[0004] Therefore, there is an urgent need for an external wall decorative panel hanging and fixing device and installation method with high structural safety redundancy, reliable waterproof performance, convenient and environmentally friendly installation, and wide applicability. Summary of the Invention

[0005] This invention aims to overcome the shortcomings of existing external wall decorative panel fixing devices and installation methods, and provides a concrete external wall decorative panel hanging fixing device and installation method that is structurally stable, waterproof, reliable, efficient in installation, environmentally friendly and energy-saving. It achieves separation of vertical and horizontal load bearing, improving structural safety; the double waterproof design ensures waterproof effect; the factory prefabricated components reduce on-site construction pollution and shorten the construction period, while being suitable for new buildings and renovations of existing buildings, without the need to remove the original decorative layer, reducing construction impact.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A suspension and fixing device for decorative panels on concrete exterior walls, including a floor edge beam, and further comprising:

[0008] Exterior wall decorative panels, square tube columns, hanging legs, support brackets, connecting bolts, locking hooks, and insulation layer;

[0009] The floor edge beams are the main load-bearing structure of the building and serve as the installation base for the suspension and fixing devices.

[0010] The square tube column is arranged vertically along the floor edge beam, with a supporting short bracket extending inward at the height of the upper surface of the floor edge beam. The supporting short bracket is embedded in the upper surface of the floor edge beam and fits tightly to securely bear the vertical load. A connecting angle steel is welded to the side of the square tube column, and the connecting angle steel is fixedly connected to the side of the floor edge beam by chemical bolts to bear the horizontal load and further fix the square tube column.

[0011] The hanging legs are integrally formed with the exterior wall decorative panel and are located at the four corners of the exterior wall decorative panel to transfer the vertical load of the exterior wall decorative panel; the support brackets extend horizontally along the two sides of the square tube column at a preset vertical spacing and cooperate with the hanging legs to support the exterior wall decorative panel; the connecting bolts are embedded in the middle of the hanging legs, and the locking hooks are detachably connected to the tail of the hanging legs through the connecting bolts to limit the outward tilt of the exterior wall decorative panel; the insulation layer is integrally connected to the inner surface of the exterior wall decorative panel through a tongue and groove interlocking structure.

[0012] Furthermore, the exterior wall decorative panel is a precast high-strength concrete component, precast with C80-C100 strength grade concrete, internally mixed with polypropylene crack-resistant fibers, and has an internal reinforcing steel wire mesh; the reinforcing steel wire mesh has a tensile strength ≥400MPa, a diameter of 2.0mm-3.0mm, a spacing of 25mm-40mm, and the thickness of the reinforcing steel wire mesh from the protective layer on the panel surface is 3mm-5mm, and the reinforcing steel wire mesh covers the entire surface area of ​​the exterior wall decorative panel.

[0013] Furthermore, the square tube column is an independent load-bearing unit with the height of a single floor of the building. Each floor beam is equipped with a set of square tube columns, supporting short brackets and connecting angle steel. The square tube column of a single floor only bears the vertical and horizontal loads of the decorative panels on that floor.

[0014] Furthermore, the hanging leg is made of concrete and is integrally cast with the exterior wall decorative panel; the connecting bolt is made of hot-dip galvanized material and is embedded inside the concrete of the hanging leg.

[0015] Furthermore, the joints of the exterior wall decorative panels are equipped with a double waterproof structure:

[0016] First layer of waterproofing: Fill the joints with silicone weather-resistant sealant to form a basic waterproof barrier;

[0017] The second layer of waterproofing: horizontal splicing seams are shielded from top and bottom by pre-set horizontal tongue and groove joints on the board edges, and vertical splicing seams are sealed by water-swellable waterstop strips embedded in the vertical tongue and groove joints, wherein the expansion ratio of the waterstop strips is ≥300%.

[0018] Furthermore, on the side of the exterior wall decorative panel splicing corresponding to the sealant area, there is a wedge-shaped opening that is larger on the inside and smaller on the outside every 40mm-60mm; the inner diameter of the opening is 3mm-4mm larger than the outer diameter and the depth is ≥5mm, and the sealant is embedded in the opening when filling.

[0019] Furthermore, the locking hook is made of stainless steel, and the part located below the hanging leg has a vertical section, the length of which is less than the gap between the upper and lower adjacent hanging plates; the lower end of the vertical section is integrally connected to an inner curved section, the bending angle of which is 30°-45°.

[0020] Furthermore, after applying epoxy structural adhesive to the lower surface of the upper hanging leg of the exterior wall decorative panel, it is fixed to the upper support bracket, and the lower hanging leg and the lower support bracket are connected in three directions.

[0021] Furthermore, the insulation layer is a flame-retardant extruded polystyrene board or rock wool board, which is interlocked with the exterior wall decorative panel through a tongue and groove joint with a depth of ≥20mm, and the interlocking surfaces are tightly fitted without any loose gaps.

[0022] Furthermore, a method for installing a concrete exterior wall decorative panel includes the following steps:

[0023] S1. Construction preparation: According to the design requirements, cut an embedding groove above the edge beam of each floor to match the supporting short bracket, clean the side of the edge beam and the embedding groove to ensure that the installation surface is flat and clean.

[0024] S2. Install the square tube column assembly: hoist the prefabricated components of the square tube column, supporting short brackets, and connecting angle steel to the installation position, so that the supporting short brackets are embedded in the mounting groove above the floor edge beam and fit tightly. Insert chemical bolts through the pre-reserved vertical elongated holes of the connecting angle steel to fix the connecting angle steel to the side of the floor edge beam. Adjust the verticality and spacing of the square tube column to ensure that the supporting brackets are on the same horizontal line.

[0025] S3. Pre-treatment of exterior wall decorative panels: Fix the locking hooks to the ends of the hanging legs at the four corners of the exterior wall decorative panels with connecting bolts, tighten the nuts and apply structural adhesive to the exposed bolt parts for sealing; if there is a gap between the insulation layer and the original wall surface of the building, apply structural adhesive locally to the inner surface of the insulation layer to ensure a tight fit.

[0026] S4. Installing exterior wall decorative panels: Apply epoxy structural adhesive evenly to the lower surface of the upper hanging leg of the exterior wall decorative panel, align the hanging leg with the support bracket on the square tube column, and push the exterior wall decorative panel towards the wall until the inner bend of the locking hook passes over the upper surface of the support bracket. With the help of the panel's own weight, the panel is vertically and inwardly locked along the inclined surface of the locking hook, so that the upper hanging leg and the support bracket are tightly bonded by the structural adhesive, and the lower hanging leg is naturally placed on the lower support bracket to form a three-way free connection.

[0027] S5. Waterproofing: After the adjacent exterior wall decorative panels (1) are installed, water-swellable sealing strips are embedded in the vertical tongue and groove of the vertical splice. After all the exterior wall decorative panels (1) are installed, silicone weather-resistant sealant is filled into the gap of the panel splice to ensure that the sealant is embedded in the wedge-shaped opening on the splice side. The horizontal tongue and groove are used to achieve the upper and lower shielding of the horizontal splice, thus completing the double waterproof structure.

[0028] Beneficial effects of this invention:

[0029] 1. High structural safety redundancy: The design adopts a separate bearing structure with short supporting brackets to bear vertical loads and connecting angle steel and chemical bolts to bear horizontal loads, avoiding fatigue of a single component under bidirectional stress; the hanging panel has built-in reinforcing steel wire mesh, which, together with hot-dip galvanized connecting bolts and stainless steel locking hooks for limiting, effectively improves the hanging panel's bending resistance, crack resistance and anti-tilting ability, and is suitable for the support requirements of existing building decoration layers.

[0030] 2. Reliable waterproof performance: The joint adopts a double waterproof structure of "silicone weather-resistant sealant + horizontal tongue and groove shielding / water-swellable water-stop strip". The wedge-shaped opening enhances the adhesion of the sealant. Even if the sealant ages and cracks, the second layer of waterproofing can still ensure the anti-leakage effect and solve the long-term leakage problem.

[0031] 3. Highly efficient and environmentally friendly installation: Core components are all prefabricated in the factory, eliminating the need for on-site cutting, welding, or drilling. They are simply fixed by splicing and fasteners, reducing construction waste, dust, and noise pollution. The independent load-bearing unit design for each floor shortens the installation cycle by more than 30% and has minimal impact on the use of the building's interior.

[0032] 4. Wide range of applications: It can be used for exterior wall decoration of new buildings, as well as for reinforcement and renovation of existing building exterior walls. There is no need to remove the original decorative layer, and the new load does not exceed the safety factor limit of the dead load of the existing building exterior wall, thus taking into account both safety and economy.

[0033] 5. High stability: The design of the upper hanging leg structure is fixed with adhesive and the lower hanging leg is freely connected in three directions. The weight of the hanging plate offsets part of the tensile stress caused by the horizontal load, avoiding the cracking of the hanging plate caused by installation stress. At the same time, it adapts to temperature deformation and improves the long-term stability of the structure. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1A horizontal cross-sectional view of the installation schematic diagram provided in an embodiment of the present invention.

[0036] Figure 2 A vertical cross-sectional view of the installation schematic diagram provided in an embodiment of the present invention.

[0037] Figure 3 This is a structural diagram of the edge reinforcement bonding of the prefabricated exterior wall decorative panel provided in an embodiment of the present invention.

[0038] Figure 4 A flowchart illustrating the installation method of concrete exterior wall decorative panels provided in an embodiment of the present invention.

[0039] In the diagram: 1-Exterior wall decorative panel; 2-Square tube column; 3-Hanging leg; 4-Support bracket; 5-Connecting bolt; 6-Locking hook; 7-Insulation layer; 8-Tongue and groove; 9-Connecting angle steel; 10-Chemical bolt; 11-Supporting short bracket; 12-Sealant; 13-Water-swellable waterstop strip; 14-Interlocking tongue and groove; 15-Floor edge beam; 16-Structural adhesive; 17-Vertical tongue and groove; 18-Horizontal tongue and groove. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1

[0041] Please see Figures 1 to 3 As shown, this embodiment provides a concrete exterior wall decorative panel hanging and fixing device, including a floor edge beam 15, and further comprising:

[0042] 1. Exterior wall decorative panel; 2. Square tube column; 3. Hanging leg; 4. Support bracket; 5. Connecting bolt; 6. Locking hook; and 7. Insulation layer.

[0043] Floor edge beam 15 is the main load-bearing structure of the building and serves as the installation base for the suspension fixing device;

[0044] The square tube column 2 is arranged vertically along the floor edge beam 15, and a supporting short bracket 11 extends inward from the upper surface of the floor edge beam 15. The supporting short bracket 11 is embedded in the floor edge beam 15 and fits tightly to stabilize and bear the vertical load. A connecting angle steel 9 is welded to the side of the square tube column 2. The connecting angle steel 9 is fixedly connected to the side of the floor edge beam 15 by chemical bolts 10 to bear the horizontal load and further fix the square tube column 2.

[0045] The hanging leg 3 is integrally formed with the exterior wall decorative panel 1 and is located at the four corners of the exterior wall decorative panel 1 to transfer the vertical load of the exterior wall decorative panel 1; the support bracket 4 extends horizontally along both sides of the square tube column 2 at a preset vertical spacing and cooperates with the hanging leg 3 to support the exterior wall decorative panel 1; the connecting bolt 5 is embedded in the middle of the hanging leg 3, and the locking hook 6 is detachably connected to the tail of the hanging leg 3 through the connecting bolt 5 to limit the outward tilt of the exterior wall decorative panel 1; the insulation layer 7 is integrally connected to the inner surface of the exterior wall decorative panel 1 through a tongue and groove interlocking structure.

[0046] By separating the loads of the supporting short bracket 11 from the connecting angle steel 9 and chemical bolts 10, the device achieves stable bearing of vertical and horizontal loads. Combined with the integrated molding structure of the hanging leg 3 and the exterior wall decorative panel 1, and the outward tilting limiting effect of the locking hook 6, the overall structural safety and stability of the device are greatly improved. The insulation layer 7 forms an integrated structure with the inner surface of the exterior wall decorative panel 1 through the tongue and groove interlocking structure, which not only ensures the insulation effect but also enhances the connection firmness. The adaptable design of the square tube column 2, the support bracket 4 and the hanging leg 3 makes the installation logic of each component clear, without the need for complex on-site processing. The device is suitable for exterior wall decoration of new buildings and reinforcement and renovation of existing building exterior walls. It does not require the removal of the original decorative layer, effectively reducing construction pollution and construction period. It takes into account structural safety, insulation functionality, construction convenience and wide applicability, and comprehensively optimizes the installation and use effect of the exterior wall decorative panel.

[0047] In this embodiment, the exterior wall decorative panel 1 is a precast high-strength concrete component, made of C80-C100 strength grade concrete, with internal polypropylene anti-crack fibers and built-in reinforcing steel wire mesh. The reinforcing steel wire mesh has a tensile strength ≥400MPa, a diameter of 2.0mm-3.0mm, a spacing of 25mm-40mm, and a thickness of 3mm-5mm from the protective layer on the panel surface. The reinforcing steel wire mesh covers the entire exterior wall decorative panel surface. This structure not only significantly improves the structural strength, bending performance, and crack resistance of the exterior wall decorative panel 1, effectively preventing cracking and damage during use, but also enhances the load-bearing stability and integrity of the connection between the exterior wall decorative panel 1 and the hanging leg 3, extending the service life of the component and providing a reliable structural guarantee for the safe operation of the entire device.

[0048] In this embodiment, the square tube column 2 is an independent load-bearing unit with the height of a single floor of the building. Each floor beam 15 is equipped with a set of square tube columns 2, supporting short brackets 11 and connecting angle steel 9. The square tube column 2 of a single floor only bears the vertical and horizontal loads of the decorative panel 1 of that floor. This allows the loads of each floor to be borne independently and not transferred to each other, effectively avoiding the structural safety risks caused by load accumulation, reducing the impact of single floor component failures on the overall exterior wall system, and facilitating layered construction, inspection and maintenance. It adapts to the load requirements and construction progress of different floors, further improving the structural reliability, operation and maintenance convenience and construction flexibility of the device.

[0049] In this embodiment, the hanging leg 3 is made of concrete and is integrally cast with the exterior wall decorative panel 1; the connecting bolt 5 is made of hot-dip galvanized material and is embedded inside the concrete of the hanging leg 3.

[0050] By using concrete for the hanging leg 3 and integrally casting it with the exterior wall decorative panel 1, and by embedding the hot-dip galvanized connecting bolts 5 tightly in contact with the concrete of the hanging leg 3, the overall connection between the hanging leg 3 and the exterior wall decorative panel 1 is strengthened, preventing separation or loosening under stress. Furthermore, the rust-proof properties of the hot-dip galvanized material and the tight fit between the bolts and the concrete enhance the tensile, bending, and shear resistance of the hanging leg 3, extending the service life of the component and providing a reliable guarantee for the stable load-bearing and safe fixing of the exterior wall decorative panel 1.

[0051] In this embodiment, the joints of the exterior wall decorative panel 1 are provided with a double waterproof structure:

[0052] First layer of waterproofing: Fill the joints with silicone weather-resistant sealant to form a basic waterproof barrier;

[0053] Second layer of waterproofing: Horizontal splice joints are shielded from top and bottom by pre-set horizontal tongue and groove joints 18 on the edge of the board, and vertical splice joints are sealed by water-swellable waterstop strips 13 embedded in vertical tongue and groove joints 17, with an expansion ratio of ≥300% for the water-swellable waterstop strips 13;

[0054] By filling the gaps between the joints with silicone weather-resistant sealant to form the first layer of basic waterproof barrier, and then using the pre-set horizontal tongue and groove 18 on the edge of the board to cover the horizontal joints from top to bottom, and the water-swellable waterstop strip 13 embedded in the vertical tongue and groove 17 with an expansion ratio of ≥300%, the vertical joints are sealed to form the second layer of protection. This creates a layered waterproof system that effectively avoids leakage problems caused by the failure of a single waterproof structure, greatly improves the waterproof reliability and long-term effectiveness of the joints, and can continuously block water intrusion even in complex climatic environments, ensuring the overall waterproof performance of the exterior wall is stable.

[0055] In this embodiment, on the side of the exterior wall decorative panel 1, corresponding to the sealant area, there is a wedge-shaped opening that is larger inside and smaller outside every 40mm-60mm; the inner diameter of the opening is 3mm-4mm larger than the outer diameter and the depth is ≥5mm, and the sealant is embedded in the opening when filling.

[0056] By embedding the sealant into the opening during filling, a mechanical interlock is formed, which greatly enhances the bonding strength between the sealant and the side of the exterior wall decorative panel 1. This effectively avoids the sealant from falling off or cracking after long-term use, further consolidates the waterproof sealing effect of the joint, ensures the long-term stability of the dual waterproof system, and extends the service life of the exterior wall waterproof structure.

[0057] In this embodiment, the locking hook 6 is made of stainless steel, and the part located below the hanging leg 3 has a vertical section. The length of the vertical section is less than the gap between the upper and lower adjacent hanging plates. The lower end of the vertical section is integrally connected to an inner curved section with a bending angle of 30°-45°.

[0058] The locking hook 6 is made of stainless steel. The length of its vertical section below the hanging leg 3 is less than the gap between the upper and lower adjacent hanging plates. The lower end of the vertical section is integrally connected to an inner bending section with a bending angle of 30°-45°. This ensures that the stainless steel material guarantees the corrosion resistance and structural strength of the component. At the same time, through scientific size design and bending structure, it achieves precise limiting of the outward tilting displacement of the exterior wall decorative hanging plate 1, avoiding loosening or falling off the hanging plate during use. This further improves the installation stability and structural safety redundancy of the device.

[0059] In this embodiment, after the lower surface of the upper hanging leg 3 of the exterior wall decorative panel 1 is coated with epoxy structural adhesive, it is fixed to the upper support bracket 4, and the lower hanging leg 3 and the lower support bracket 4 are connected in three directions.

[0060] By applying epoxy structural adhesive to the lower surface of the upper hanging leg 3 of the exterior wall decorative panel 1 and fixing it to the upper support bracket 4, and using a three-way free connection between the lower hanging leg 3 and the lower support bracket 4, the bonding effect of the structural adhesive is strengthened to ensure the connection between the upper hanging leg 3 and the support bracket 4, ensuring the stable transmission of vertical loads. At the same time, the three-way free connection of the lower layer releases the stress caused by temperature deformation and installation errors, avoiding the exterior wall decorative panel 1 from generating installation stress or cracking during use. This balances the reliability of structural fixation and deformation adaptability, further improving the stability of the installation and use of the exterior wall decorative panel 1.

[0061] In this embodiment, the insulation layer 7 is a flame-retardant extruded polystyrene board or rock wool board, which interlocks with the exterior wall decorative panel 1 through the tongue and groove 8. The depth is ≥20mm, and the interlocking surfaces are tightly fitted without any loose gaps.

[0062] By using flame-retardant extruded polystyrene board or rock wool board for the insulation layer 7, and by tightly interlocking the tongue and groove joint 8 (≥20mm deep) with the exterior wall decorative panel 1 without any loose gaps, the fire safety performance of the exterior wall is improved by using flame-retardant materials. At the same time, the deep tongue and groove joint 8 strengthens the overall connection between the insulation layer and the panel, effectively preventing the insulation layer from falling off or shifting during use. Meanwhile, the tightly interlocking surfaces eliminate the thermal bridging effect, ensuring the long-term stability of the exterior wall insulation and achieving a unified function of fire prevention, insulation and structural stability. Example 2

[0063] Please see Figure 4As shown, based on the above embodiment 1, this embodiment provides a method for installing a concrete exterior wall decorative panel, including the following steps:

[0064] S1. Construction preparation: According to the design requirements, make an embedding groove above the edge beam 15 of each floor to match the supporting short bracket 11, clean the side of the edge beam 15 and the embedding groove to ensure that the installation surface is flat and clean.

[0065] S2. Install the square tube column assembly: hoist the prefabricated assembly of square tube column 2, supporting short bracket 11 and connecting angle steel 9 to the installation position, so that the supporting short bracket 11 is embedded in the mounting groove of the floor edge beam 15 and fits tightly. Through the reserved vertical elongated hole of the connecting angle steel 9, chemical bolts 10 are inserted to fix the connecting angle steel 9 to the side of the floor edge beam 15. Adjust the verticality and spacing of the square tube column 2 to ensure that the supporting bracket 4 is on the same horizontal line.

[0066] S3. Pre-treatment of exterior wall decorative panels: Fix the locking hooks 6 to the tails of the hanging legs 3 at the four corners of the exterior wall decorative panels 1 using connecting bolts 5, tighten the nuts and apply structural adhesive to the exposed bolt parts for sealing; if there is a gap between the insulation layer 7 and the original building wall, apply structural adhesive locally to the inner surface of the insulation layer 7 to ensure a tight fit.

[0067] S4. Installing the exterior wall decorative panel: Apply epoxy structural adhesive evenly to the lower surface of the upper hanging leg 3 of the exterior wall decorative panel 1, align the hanging leg 3 with the support bracket 4 on the square tube column 2, and push the exterior wall decorative panel 1 towards the wall until the inner bend of the locking hook 6 passes over the upper surface of the support bracket 4. With the help of the panel's own weight, the panel is vertically and inwardly locked along the inclined surface of the locking hook 6, so that the upper hanging leg 3 and the support bracket 4 are tightly bonded by the structural adhesive, and the lower hanging leg 3 is naturally placed on the lower support bracket 4 to form a three-way free connection.

[0068] S5. Waterproofing: After the adjacent exterior wall decorative panels 1 are installed, water-swellable sealing strips are embedded in the vertical tongue and groove of the vertical splice. After all exterior wall decorative panels 1 are installed, silicone weather-resistant sealant is filled into the gaps between the panels, ensuring that the sealant is embedded in the wedge-shaped openings on the splice side. The horizontal tongue and groove are used to achieve vertical and horizontal shielding of the horizontal splice, completing the double waterproofing structure.

[0069] This installation method follows a standardized process of "construction preparation - square tube column assembly installation - hanging plate pretreatment - hanging plate installation - waterproofing treatment." It combines factory-prefabricated square tube columns 2, supporting short brackets 11, and connecting angle steel 9 into an integrated assembly. On-site work only requires embedding, fastening, and splicing, eliminating the need for complex cutting and welding, significantly improving construction efficiency. During installation, the verticality and spacing of the square tube columns 2 are adjusted to ensure the supporting brackets 4 are horizontal. The hanging plate's own weight along the inclined surface of the locking hooks 6 achieves vertical and inward locking. Combined with the upper hanging leg 3's structural adhesive fixation and the lower layer's three-way free connection design, it effectively releases installation stress. Force and temperature deformation stress ensure the installation accuracy and structural stability of the hanging plate; the pretreatment steps of sealing the exposed bolt parts after fixing the locking hook 6, filling the gap of the insulation layer 7 with structural adhesive, and the double waterproof treatment of embedding the sealant into the wedge-shaped hole, embedding the water-swellable waterstop strip 13 in the vertical tongue and groove 17, and covering the horizontal tongue and groove 18 further enhance the durability and waterproof reliability of the device. The overall process is suitable for new buildings and renovations of existing buildings, without the need to remove the original decorative layer, reducing construction pollution and construction time, and achieving a unity of convenient installation, structural stability, long-term waterproofing and environmentally friendly construction.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A suspension and fixing device for decorative panels on concrete exterior walls, comprising a floor edge beam (15), characterized in that, Also includes: Exterior wall decorative panel (1), square tube column (2), hanging leg (3), support bracket (4), connecting bolt (5), locking hook (6) and insulation layer (7); The floor edge beam (15) is the main load-bearing structure of the building and serves as the installation base for the suspension fixing device; The square tube column (2) is arranged vertically along the floor edge beam (15), and a supporting short bracket (11) extends inward at the height of the upper surface of the floor edge beam (15). The supporting short bracket (11) is embedded in the upper surface of the floor edge beam (15) and fits tightly to support the vertical load. A connecting angle steel (9) is welded to the side of the square tube column (2). The connecting angle steel (9) is fixedly connected to the side of the floor edge beam (15) by chemical bolts (10) to bear the horizontal load and further fix the square tube column (2). The hanging leg (3) is integrally formed with the exterior wall decorative panel (1) and is located at the four corners of the exterior wall decorative panel (1) to transfer the vertical load of the exterior wall decorative panel (1); the support bracket (4) extends horizontally along the two sides of the square tube column (2) at a preset vertical spacing and cooperates with the hanging leg (3) to support the exterior wall decorative panel (1); the connecting bolt (5) is embedded in the middle of the hanging leg (3), and the locking hook (6) is detachably connected to the tail of the hanging leg (3) through the connecting bolt (5) to limit the outward tilt of the exterior wall decorative panel (1); the insulation layer (7) is integrally connected to the inner surface of the exterior wall decorative panel (1) through the tongue and groove interlocking structure; The joints of the exterior wall decorative panels (1) are equipped with a double waterproof structure: First layer of waterproofing: Fill the joints with silicone weather-resistant sealant to form a basic waterproof barrier; Second layer of waterproofing: Horizontal splice joints are shielded from top and bottom by pre-set horizontal tongue and groove joints on the board edges, and vertical splice joints are sealed by water-swellable waterstop strips embedded in the vertical tongue and groove joints, wherein the expansion ratio of the waterstop strips is ≥300%; The exterior wall decorative panel (1) has a wedge-shaped opening with a larger inner diameter and a smaller outer diameter every 40mm-60mm on the side corresponding to the sealant area. The inner diameter of the opening is 3mm-4mm larger than the outer diameter and the depth is ≥5mm. The sealant is embedded in the opening when it is filled. The upper hanging leg (3) of the exterior wall decorative panel (1) is fixed to the upper support bracket (4) after the lower surface of the upper hanging leg (3) is coated with epoxy structural adhesive. The lower hanging leg (3) and the lower support bracket (4) are connected in three directions.

2. The concrete exterior wall decorative panel hanging and fixing device according to claim 1, characterized in that, The exterior wall decorative panel (1) is a precast high-strength concrete component, made of C80-C100 strength grade concrete, with polypropylene anti-crack fiber added inside, and reinforced steel wire mesh inside; the reinforced steel wire mesh has a tensile strength ≥400MPa, a diameter of 2.0mm-3.0mm, and a spacing of 25mm-40mm.

3. The concrete exterior wall decorative panel hanging and fixing device according to claim 1, characterized in that, The square tube column (2) is an independent load-bearing unit with the height of a single floor of the building. Each floor edge beam (15) is equipped with a set of square tube columns (2), supporting short brackets (11) and connecting angle steel (9). The square tube column (2) of a single floor only bears the vertical and horizontal loads of the exterior wall decorative panel (1) of that floor.

4. The concrete exterior wall decorative panel hanging and fixing device according to claim 1, characterized in that, The hanging leg (3) is made of concrete and is integrally cast with the exterior wall decorative panel (1); the connecting bolt (5) is made of hot-dip galvanized material and is embedded in the middle of the concrete of the hanging leg (3).

5. The concrete exterior wall decorative panel hanging and fixing device according to claim 1, characterized in that, The locking hook (6) is made of stainless steel, and the part located below the hanging leg (3) has a vertical section; the lower end of the vertical section is integrally connected to an inner curved section, and the bending angle of the inner curved section is 30°-45°.

6. The concrete exterior wall decorative panel hanging and fixing device according to claim 1, characterized in that, The insulation layer (7) is a flame-retardant extruded polystyrene board or rock wool board, which is interlocked with the exterior wall decorative panel (1) through tongue and groove (8), and the interlocking surfaces are tightly fitted without any loose gaps.

7. A method for installing a concrete exterior wall decorative panel, based on the device described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Construction preparation: According to the design requirements, make an inlay groove above the edge beam (15) of each floor to match the supporting short bracket (11), clean the side of the edge beam (15) and the inlay groove to ensure that the installation surface is flat and clean. S2. Install the square tube column assembly: hoist the prefabricated components of the square tube column (2), supporting short bracket (11) and connecting angle steel (9) to the installation position, so that the supporting short bracket (11) is embedded in the mounting groove of the floor edge beam (15) and fits tightly. Through the reserved vertical elongated hole of the connecting angle steel (9), chemical bolts (10) are inserted to fix the connecting angle steel (9) to the side of the floor edge beam (15). Adjust the verticality and spacing of the square tube column (2) to ensure that the supporting bracket (4) is on the same horizontal line. S3. Pre-treatment of exterior wall decorative panels: Fix the locking hook (6) to the tail of the hanging leg (3) at the four corners of the exterior wall decorative panel (1) with connecting bolts (5), tighten the nuts and apply structural adhesive to the exposed bolt parts for sealing; if there is a gap between the insulation layer (7) and the original wall surface of the building, apply structural adhesive locally to the inner surface of the insulation layer (7) to ensure tight fit; S4. Install the exterior wall decoration panel: Apply epoxy structural adhesive evenly to the lower surface of the upper hanging leg (3) of the exterior wall decoration panel (1), align the hanging leg (3) with the support bracket (4) on the square tube column (2), push the exterior wall decoration panel (1) towards the wall surface until the inner bend of the locking hook (6) passes over the upper surface of the support bracket (4), and use the weight of the panel to achieve vertical and inward locking along the inclined surface of the locking hook (6), so that the upper hanging leg (3) and the support bracket (4) are tightly bonded by the structural adhesive, and the lower hanging leg (3) is naturally placed on the lower support bracket (4) to form a three-way free connection; S5. Waterproofing: After the adjacent exterior wall decorative panels (1) are installed, water-swellable sealing strips are embedded in the vertical tongue and groove of the vertical splice. After all the exterior wall decorative panels (1) are installed, silicone weather-resistant sealant is filled into the gap of the panel splice to ensure that the sealant is embedded in the wedge-shaped opening on the splice side. The horizontal tongue and groove are used to achieve the upper and lower shielding of the horizontal splice, thus completing the double waterproof structure.

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