Secondary defensive line device of stone curtain wall and construction process

Abstract

The invention relates to the technical field of stone curtain walls, and discloses a stone curtain wall two-defense-line device and a construction technology.The stone curtain wall two-defense-line device comprises a building main body, a connecting assembly is arranged outside the building main body and comprises a first mounting plate, and the outer wall of the first mounting plate is fixedly connected with a transverse strip extending transversely; a connecting column is rotatably connected to the inner wall of the upper side of the first mounting plate, a threaded column is fixedly connected to the bottom end of the connecting column, a supporting plate is in threaded connection to the outer wall of the threaded column, an elastic buffer part is embedded in the upper surface of the supporting plate, a mounting shell is fixedly connected to the outer wall of the connecting column, and a connecting strip is arranged in the mounting shell. And the tail end of the connecting strip is fixedly connected with a mounting plate II. Double defense lines are formed through the composite connection design of rigid supporting and flexible pulling, the flexible metal belt connecting strip and the second mounting plate form a tensile structure, the curtain wall is prevented from integrally falling off, and the safety and accidental failure resistance of a curtain wall system are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stone curtain walls, and specifically to a secondary defense device and construction technology for stone curtain walls. Background Art

[0002] As an important part of the building's exterior envelope structure, the safety of stone curtain walls is directly related to the overall performance and service life of the building. In recent years, with the increase in building height and the diversification of exterior design, stone curtain walls have been more and more widely used. However, traditional stone curtain wall designs mainly rely on a single defense line, that is, stone panels are fixed to the building's main structure through metal hangers. During long-term use, due to the influence of factors such as wind loads, temperature changes, and earthquakes, problems such as hanger fatigue, loosening, and even fracture are likely to occur, resulting in the detachment of stone panels and posing serious safety hazards. In addition, the single defense line design lacks redundant protection. Once the main hanger fails, the entire curtain wall system will face the risk of collapse.

[0003] The safety of the traditional single defense line design for stone curtain walls is insufficient, lacking a redundant protection mechanism; the risk of stone panel detachment caused by hanger fatigue and aging. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a secondary defense device and construction technology for stone curtain walls, which solves the problems of insufficient safety of the traditional single defense line design for stone curtain walls and the lack of a redundant protection mechanism.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A secondary defense device for a stone curtain wall, including a building main body, a connection component is arranged outside the building main body, and a stone curtain wall body is arranged outside the connection component; The connection component includes a first mounting plate, the first mounting plate is fixed to the outer surface of the building main body by screws, a horizontally extending cross bar is fixedly connected to the outer wall of the first mounting plate, a connection column is rotatably connected to the upper inner wall of the first mounting plate, the bottom end of the connection column is fixedly connected with a threaded column, and the lower end of the threaded column is rotatably connected to the lower inner part of the first mounting plate; The outer wall of the threaded column is threadedly connected with a support plate, the outer wall of the support plate is slidably connected to the inner chute of the first mounting plate, an elastic buffer member is embedded on the upper surface of the support plate, and the lower surface of the stone curtain wall body contacts the support plate through the elastic buffer member; An installation shell is fixedly connected to the outer wall of the connection column, a connection bar is arranged inside the installation shell, the end of the connection bar is fixedly connected with a second mounting plate, and the second mounting plate is fixed to the inner side of the stone curtain wall body by screws.

[0006] By adopting the above technical solutions, the first line of defense: the support plate and the elastic buffer form a contact support structure, which bears static loads and absorbs dynamic impacts. The elastic buffer disperses energy through elastic deformation, reduces rigid collisions, and protects the stone curtain wall body and the connection components. The second line of defense: the flexible metal strip connecting bar and the second mounting plate form a tensile restraint structure. When the support plate fails, the tensile strength of the metal strip prevents the overall detachment of the curtain wall. Even if the curtain wall accidentally detaches, the connecting bar pulls the mounting shell and the threaded column to rotate, driving the support plate and the elastic buffer to clamp the curtain wall, forming a secondary safety protection. Under normal conditions, the support plate and the elastic buffer bear the main loads. Under extreme working conditions, the second line of defense is automatically activated to avoid potential safety hazards caused by a single connection failure.

[0007] Preferably, the elastic buffer is a rubber ball with a diameter ranging from 10 to 20 mm, and it is evenly distributed on the upper surface of the support plate.

[0008] Preferably, the connecting bar is a flexible metal strip with an anti-corrosion coating on its surface.

[0009] Preferably, the support plate is made of an aluminum alloy plate with a thickness of 5 - 8 mm, the surface is anodized, and the inner wall of its chute is coated with a wear-resistant lubricating coating.

[0010] Preferably, a self-locking nut is provided at the threaded connection between the threaded column and the support plate to prevent the support plate from loosening under vibration.

[0011] Preferably, the fixing hole of the second mounting plate is an oblong hole for adjusting the horizontal installation position of the stone curtain wall body.

[0012] Preferably, the construction technology of the second line of defense for the stone curtain wall includes the following steps: S1. Locate the first mounting plate on the outer surface of the building main body and calibrate the horizontal level of the cross bar with a level. S2. Assemble the connecting column and the threaded column to the first mounting plate, and use a tool to rotate the connecting column to drive the support plate to lift to a preset height. S3. Embed the elastic buffers into the upper surface of the support plate in a matrix arrangement and test their compression and rebound performance. S4. Place the stone curtain wall body on the elastic buffers and the support plate, and adjust its horizontal and vertical angles with a laser alignment instrument. S5. Pull out the connecting bar from the mounting shell, and lock the stone curtain wall body and the connection components through the second mounting plate to form a double fixing structure.

[0013] Preferably, in S2, the lifting adjustment of the support plate needs to be carried out under a no-load state, and after each 5 mm adjustment, it needs to be static for 30 seconds to eliminate stress.

[0014] Preferably, in step S4, after placing the stone curtain wall body, an infrared thermal imager is used to detect the force uniformity of the elastic buffer.

[0015] Preferably, in step S3, the compression amount of the elastic buffer needs to be controlled within the range of 20%-30% of the initial height.

[0016] The present invention provides a secondary defense device and construction technology for stone curtain walls. It has the following beneficial effects: 1. Through the composite connection design of rigid support and flexible tie, the present invention forms a double defense line. In the first defense line, the support plate and the elastic buffer bear static loads and buffer dynamic impacts through contact support and elastic deformation, reducing damage to the stone curtain wall caused by rigid collisions; in the second defense line, the flexible metal strip connecting bar and the second mounting plate form a tensile structure. When the main support fails, a tensile constraint is formed by virtue of the tensile strength of the metal strip to prevent the overall detachment of the curtain wall, significantly improving the safety and anti-accidental failure ability of the curtain wall system.

[0017] 2. On the upper surface of the support plate of the present invention, rubber balls with a diameter of 10-20 mm are evenly embedded in a matrix form as elastic buffers. External loads are effectively absorbed and dispersed through elastic deformation, reducing the rigid contact stress between the stone curtain wall and the support plate. During construction, an infrared thermal imager is used to detect the force uniformity of the buffer to ensure that the load deviation ≤ 5%, avoiding premature failure of components caused by local overload. This design can not only adapt to small displacements of the curtain wall but also reduce vibration losses through buffering and shock absorption, extending the service life of the curtain wall and its connection components.

[0018] 3. The connection component of the present invention drives the support plate to rise and fall through the cooperation of the connecting column and the threaded column. The fixing holes of the second mounting plate are designed as oblong holes, which can respectively achieve precise adjustment of the vertical height and horizontal position of the curtain wall.

[0019] 4. The construction process of the present invention is calibrated and detected in multiple dimensions through a level, a laser alignment instrument, an infrared thermal imager, etc. to ensure the stability of the horizontal support reference; the horizontal and vertical angles of the stone curtain wall are precisely adjusted through laser calibration; the force uniformity of the elastic buffer is monitored in real time through infrared thermal imaging to avoid local overload, effectively reducing human error and ensuring the installation accuracy and overall structural safety of the curtain wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a partial structural schematic diagram of the connection component of the present invention; Figure 3 is a partial structural schematic diagram of the threaded column of the present invention; Figure 4 is a partial structural schematic diagram of the connecting bar of the present invention.

[0021] Among them, 1 is the building main body; 2 is the connecting component; 21 is the first mounting plate; 22 is the horizontal bar; 23 is the connecting column; 24 is the threaded column; 25 is the support plate; 26 is the elastic buffer; 27 is the mounting shell; 28 is the connecting bar; 29 is the second mounting plate; 3 is the stone curtain wall body. Specific implementation mode

[0022] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to the attached Figure 1 - attached Figure 3 , the second line of defense device for the stone curtain wall provided by the embodiment of the present invention includes a building main body 1, a connecting component 2 is arranged outside the building main body 1, and a stone curtain wall body 3 is arranged outside the connecting component 2; The connecting component 2 includes a first mounting plate 21, the first mounting plate 21 is fixed to the outer surface of the building main body 1 by screws, a horizontally extending horizontal bar 22 is fixedly connected to the outer wall of the first mounting plate 21, a connecting column 23 is rotatably connected to the inner wall of the upper side of the first mounting plate 21, the bottom end of the connecting column 23 is fixedly connected with a threaded column 24, and the lower end of the threaded column 24 is rotatably connected to the inner part of the lower side of the first mounting plate 21; The outer wall of the threaded column 24 is threadedly connected with a support plate 25, the outer wall of the support plate 25 is slidably connected to the inner side chute of the first mounting plate 21, an elastic buffer 26 is embedded on the upper surface of the support plate 25, and the lower surface of the stone curtain wall body 3 contacts the support plate 25 through the elastic buffer 26; A mounting shell 27 is fixedly connected to the outer wall of the connecting column 23, a connecting bar 28 is arranged in the mounting shell 27, the end of the connecting bar 28 is fixedly connected with a second mounting plate 29, and the second mounting plate 29 is fixed to the inner side of the stone curtain wall body 3 by screws.

[0024] Specifically, based on the building body 1, the outside is connected to the stone curtain wall body 3 in a rigid-flexible composite manner through the connection component 2: in the connection component 2, the mounting plate 1 21 is fixed to the outer surface of the building body 1 by high-strength screws, and the horizontal bar 22 calibrated horizontally is fixed to the outer wall thereof, and the inner side of the mounting plate 1 21 cooperates with the connecting column 23 and the threaded column 24 to make the support plate 25 rise and fall, and the upper surface of the support plate 25 is embedded with a rubber ball elastic buffer 26 with a diameter of 10-20mm in the form of a matrix, which bears the lower surface of the stone curtain wall body 3 and absorbs the dynamic load; the middle part of the connecting column 23 is fixed in the mounting shell 27, and the support plate 25 is received. The flexible metal strip connecting strip 28 with an anti-corrosion coating on the surface is fixed with the second mounting plate 29 at the end of the connecting strip 28 and the inner side of the stone curtain wall body 3 by screws to form a double fixed structure. Under normal conditions, the support plate 25 and the elastic buffer 26 bear static loads and partial dynamic buffering. When the main support fails due to external impact, the connecting strip 28 and the second mounting plate 29 form a second line of defense to prevent the curtain wall from falling off. When the stone curtain wall body 3 falls off accidentally, the connecting strip 28 will be pulled, and the connecting strip 28 will drive the mounting shell 27 and the threaded column 24 to rotate, thereby driving 25 and 26 to clamp the stone curtain wall body 3.

[0025] When the stone curtain wall body 3 is subjected to external impact such as strong wind, impact or earthquake load, the device forms a double safety protection: First line of defense: The support plate 25 and the elastic buffer 26 bear the main static load and part of the dynamic load through contact support and buffering; The second line of defense: the flexible connection structure formed by the connecting strip 28 and the second mounting plate 29, relying on the tensile strength of the metal belt, forms a tensile constraint when the support plate 25 or the foundation connection fails, preventing the stone curtain wall body 3 from falling off as a whole.

[0026] Please see attached Figure 1 -Attached Figure 3 The elastic buffer 26 is a rubber ball with a diameter range of 10-20mm and is evenly distributed on the upper surface of the support plate 25; the connecting strip 28 is a flexible metal strip with an anti-corrosion coating on its surface; the support plate 25 is made of an aluminum alloy plate with a thickness of 5-8mm, the surface of which is anodized, and the inner wall of the slide groove is coated with a wear-resistant lubricating coating; a self-locking nut is provided at the threaded connection between the threaded column 24 and the support plate 25 to prevent the support plate 25 from loosening under vibration; the fixing hole of the mounting plate 29 is an oblong hole, which is used to adjust the horizontal installation position of the stone curtain wall body 3.

[0027] Specifically, the elastic buffer 26 uses rubber balls with a diameter ranging from 10 to 20 mm. These rubber balls are evenly distributed on the upper surface of the support plate 25 in a matrix form. The rubber balls have good elasticity. When the stone curtain wall is subjected to external force impact or vibration, they can absorb and disperse energy through their own elastic deformation, playing a role in buffering and shock absorption, effectively reducing the rigid collision between the stone curtain wall and the support plate 25, protecting the stone curtain wall body 3 and the connection component 2, and extending their service life. At the same time, the uniform distribution in a matrix form can evenly transfer the load to the support plate 25, avoiding excessive local stress.

[0028] The flexible metal strip has a certain flexibility and can adapt to the small displacements and deformations of the stone curtain wall body 3 under different working conditions, ensuring the reliability of the connection. The anti-corrosion coating on the surface can prevent the metal strip from being corroded in harsh environments such as humidity, acids, and alkalis, extending the service life of the connecting strip 28, and ensuring the stability of the strength and performance of the connecting strip 28 during long-term use.

[0029] Please refer to the appendix Figure 3 At the threaded connection between the threaded column 24 and the support plate 25, a self-locking nut is provided, and a hexagonal head is configured at the top of the connecting column 23 for easy rotation adjustment using tools.

[0030] The support plate 25 is made of an aluminum alloy plate with a thickness of 5 - 8 mm, and its surface is anodized. Aluminum alloy has the characteristics of light weight and high strength, which can reduce the weight of the entire connection component 2 while ensuring that the support plate 25 has sufficient load-bearing capacity. The anodizing treatment can form a dense oxide film on the surface of the aluminum alloy, improving the corrosion resistance and wear resistance of the support plate 25, enabling it to better adapt to various environmental conditions.

[0031] The construction technology of the secondary defense line of the stone curtain wall includes the following steps: S1. Position and install the first mounting plate 21 on the outer surface of the building main body 1, and calibrate the horizontal level of the cross bar 22 using a level. S2. Assemble the connecting column 23 and the threaded column 24 to the first mounting plate 21, and use a tool to rotate the connecting column 23 to drive the support plate 25 to lift to a preset height. S3. Embed the elastic buffer 26 into the upper surface of the support plate 25 in a matrix arrangement and test its compression and rebound performance. S4. Place the stone curtain wall body 3 on the elastic buffer 26 and the support plate 25, and adjust its horizontal and vertical angles using a laser aligner. S5. Pull out the connecting strip 28 from the mounting shell 27, and lock the stone curtain wall body 3 and the connection component 2 through the second mounting plate 29 to form a double-fixed structure.

[0032] Specifically, S1: Use a laser rangefinder to accurately mark the installation positions of the first mounting plate 21 on the outer surface of the building body, ensuring that the lateral spacing error ≤ 2 mm and the vertical elevation deviation ≤ 3 mm. Subsequently, fix it to the main structure with M12 high-strength stainless steel screws; weld the cross bars 22 on the outside of the first mounting plate 21, and use an electronic level to calibrate the lateral level deviation ≤ 1 mm / m for each section. After calibration, touch up the anti-corrosion coating at the connection nodes to form a stable lateral support reference.

[0033] S2: Install the connecting column 23 and the coaxial threaded column 24 in sequence in the middle of the first mounting plate 21 to ensure smooth rotation; in the unloaded state, use a hex wrench to rotate the hex head at the top of the connecting column 23 to drive the threaded column 24 to rotate, drive the support plate 25 to lift and lower along the inner chute, monitor to the preset height with a laser rangefinder, and finally tighten the lock nut to fix.

[0034] S3: Embed rubber balls with a diameter of 10 - 20 mm on the upper surface of the support plate 25 at a matrix spacing of 100 mm × 100 mm, and the embedding depth is 1 / 2 of the sphere height to form a uniform bearing surface; use an infrared thermal imager to scan to ensure that the stress uniformity deviation ≤ 5%.

[0035] S4: Lift and install the stone curtain wall body 3 with a vacuum suction cup, and place it stably on the elastic buffer 26 of the support plate 25. Use a laser calibrator to project horizontally to detect and adjust the levelness of the curtain wall.

[0036] S5: Pull out the flexible metal strip connecting bar 28 coated with an anti-corrosion coating from the installation shell 27, adjust the length according to the curtain wall size, and fix the second mounting plate 29 at the end to the preset hole position on the inner side of the curtain wall with stainless steel screws; finally form a double safety structure.

[0037] In S2, the lifting adjustment of the support plate 25 needs to be carried out in the unloaded state, and after each adjustment of 5 mm, it needs to stand still for 30 seconds to eliminate stress; in S4, after placing the stone curtain wall body 3, use an infrared thermal imager to detect the stress uniformity of the elastic buffer 26; in S3, the compression amount of the elastic buffer 26 needs to be controlled within the range of 20% - 30% of the initial height.

[0038] Specifically, the lifting adjustment of the support plate 25 needs to be carried out in the unloaded state to avoid the self-weight of the stone curtain wall body 3 generating additional pressure on the thread pair, ensuring that the support plate slides smoothly along the chute during the adjustment process; stand still for 30 seconds after each adjustment of 5 mm, which can release the stress accumulated in the thread pair of the threaded column 24 and the support plate 25 during the transmission process, prevent the stress residue from causing small displacements of the support plate 25 in the later stage, and ensure the long-term stability of the installation height.

[0039] After placing the stone curtain wall body 3, use an infrared thermal imager to scan the surface temperature field of the elastic buffer 26. The force-bearing state of each buffer is visually reflected through the temperature difference. The greater the force, the higher the heat generated by contact friction. The area with abnormal temperature indicates the load concentration point: it is possible to accurately locate the local overload buffer caused by the height deviation of the support plate 25, the inclination of the curtain wall installation, etc. If the temperature in a certain area is more than 5 °C higher than the average value, it is convenient to correct it in time by finely adjusting the height of the support plate 25 or the angle of the curtain wall to ensure uniform load distribution and avoid premature failure of individual buffers due to long-term overload.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The secondary defense device for stone curtain wall, including the building main body (1), is characterized in that: An external connection component (2) is provided on the building main body (1), and a stone curtain wall body (3) is provided on the outside of the connection component (2); The connection component (2) includes a first mounting plate (21), the first mounting plate (21) is fixed to the outer surface of the building main body (1) by screws, a horizontally extending cross bar (22) is fixedly connected to the outer wall of the first mounting plate (21), a connecting column (23) is rotatably connected to the inner wall of the upper side of the first mounting plate (21), a threaded column (24) is fixedly connected to the bottom end of the connecting column (23), and the lower end of the threaded column (24) is rotatably connected to the inner part of the lower side of the first mounting plate (21); A support plate (25) is threadedly connected to the outer wall of the threaded column (24), the outer wall of the support plate (25) is slidably connected to the inner side chute of the first mounting plate (21), an elastic buffer member (26) is embedded in the upper surface of the support plate (25), and the lower surface of the stone curtain wall body (3) is in contact with the support plate (25) through the elastic buffer member (26); An installation shell (27) is fixedly connected to the outer wall of the connecting column (23), a connecting bar (28) is arranged in the installation shell (27), a second mounting plate (29) is fixedly connected to the end of the connecting bar (28), and the second mounting plate (29) is fixed to the inner side of the stone curtain wall body (3) by screws.

2. The secondary defense device for a stone curtain wall according to claim 1, characterized in that, The elastic buffer member (26) is a rubber ball, its diameter ranges from 10 to 20 mm, and it is evenly distributed on the upper surface of the support plate (25).

3. The secondary defense device for stone curtain wall according to claim 1, characterized in that, The connecting bar (28) is a flexible metal strip, and its surface is coated with an anti-corrosion coating.

4. The secondary defense device for a stone curtain wall according to claim 1, wherein The support plate (25) is made of an aluminum alloy plate with a thickness of 5 - 8 mm, the surface is anodized, and the inner wall of its chute is coated with a wear-resistant lubricating coating.

5. The secondary defense line device for a stone curtain wall according to claim 1, characterized in that, A self-locking nut is arranged at the threaded connection between the threaded column (24) and the support plate (25) to prevent the support plate (25) from loosening under vibration.

6. The secondary defense device for stone curtain wall according to claim 1, characterized in that The fixing holes of the second mounting plate (29) are oblong holes for adjusting the horizontal installation position of the stone curtain wall body (3).

7. Construction technology of the secondary defense line for stone curtain wall, characterized in that, Applied to the stone curtain wall secondary defense device according to any one of claims 1 - 6, it includes the following steps: S1. Locate the first mounting plate (21) on the outer surface of the building main body (1), and calibrate the horizontal level of the cross bar (22) with a level; S2. Assemble the connecting column (23) and the threaded column (24) to the first mounting plate (21), and rotate the connecting column (23) with a tool to drive the support plate (25) to lift to a preset height; S3. Embed the elastic buffer members (26) in a matrix arrangement on the upper surface of the support plate (25), and test their compression and rebound performance; S4. Place the stone curtain wall body (3) on the elastic buffer members (26) and the support plate (25), and adjust its horizontal and vertical angles with a laser alignment instrument; S5. Pull out the connecting bar (28) from the installation shell (27), and lock the stone curtain wall body (3) and the connection component (2) through the second mounting plate (29) to form a double fixing structure.

8. The construction process of the secondary defense line of the stone curtain wall according to claim 7, characterized in that, In S2, the lifting adjustment of the support plate (25) shall be carried out under no-load condition, and after each 5 mm adjustment, it shall be static for 30 seconds to eliminate stress.

9. The construction process of the secondary defense line for stone curtain walls according to claim 7, characterized in that, In S4, after placing the stone curtain wall body (3), an infrared thermal imager is used to detect the force uniformity of the elastic buffer (26).

10. The construction process of the secondary defense line of the stone curtain wall according to claim 7, characterized in that, In S3, the compression amount of the elastic buffer (26) shall be controlled within the range of 20% - 30% of the initial height.

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