Quick and accurate splicing structure for fabricated building external wall panels

Abstract

The utility model discloses a quick and accurate splicing structure for fabricated building external wall panels. The quick and accurate splicing structure comprises buckling strips transversely fixed to a wall body and the external wall panels. Clamping grooves are formed in the upper end and the lower end of the outer wallboard, limiting holes are formed in the middles of the clamping grooves, the buckling strips are correspondingly provided with hexagonal limiting columns, and limiting of the outer wallboard is achieved through accurate size matching of the buckling strips and the hexagonal limiting columns; protrusions and grooves are arranged on the two sides of the outer wall board respectively, and the adjacent boards are transversely spliced through convex-concave structures in interference fit. An elastic buffer layer is arranged at the bottom of the clamping groove, waterproof sealing glue layers are arranged on the contact face and the splicing seam, and the sealing performance and the anti-seismic performance are improved. According to the structure, through buckle sliding fit, hexagonal limiting column locking and convex-concave splicing, rapid installation of the outer wall plate is achieved, no connecting piece needs to be exposed, efficient construction is achieved, the appearance is neat, multiple waterproof functions are achieved, and the structure is suitable for construction of various fabricated building outer walls.

Description

A rapid and precise splicing structure for prefabricated building exterior wall panels Technical Field

[0001] This article relates to a rapid and precise splicing structure for prefabricated building exterior wall panels. Background Technology

[0002] Prefabricated buildings, with their advantages of high efficiency, environmental friendliness, and high degree of industrialization, have become an important direction for modern architectural development. As a key enclosure component of prefabricated buildings, the installation method of exterior wall panels directly affects the construction efficiency, structural safety, and appearance quality of the building.

[0003] Currently, the main installation methods for prefabricated exterior wall panels include hanging and direct nailing:

[0004] Suspended installation: The exterior wall panels are suspended from the main structure by pre-embedded brackets. The position of the brackets needs to be adjusted on site. The installation process is complicated and inefficient. The exposed brackets can affect the aesthetics of the building. There is also a risk that the brackets will rust and cause the connection to fail.

[0005] Nail-type installation: The exterior wall panels are directly fixed to the keel or wall with screws. The installation process requires multiple drilling and nailing, which is slow. The exposed nail holes damage the integrity of the exterior wall panel surface, which can easily cause rainwater leakage and affect the overall aesthetics of the building.

[0006] Furthermore, existing installation methods generally suffer from insufficient positioning accuracy, making it difficult to control the uniformity of the joints between exterior wall panels. This results in poor wall flatness, requiring extensive repairs later, further increasing construction costs and time. Therefore, there is an urgent need to develop a prefabricated exterior wall panel splicing structure that can achieve rapid installation, precise positioning, and improved aesthetics and waterproofing performance. Summary of the Invention

[0007] This utility model provides a rapid and precise splicing structure for prefabricated building exterior wall panels. By optimizing the snap-fit ​​connection structure and splicing method, it achieves rapid installation, precise positioning, and reliable connection of exterior wall panels, while improving the building's appearance quality and waterproof performance.

[0008] A rapid and precise splicing structure for prefabricated building exterior wall panels includes a snap-on strip fixed horizontally to the wall and an exterior wall panel installed on the snap-on strip;

[0009] The upper and lower ends of the exterior wall panel are provided with slots, the width of which matches the thickness of the buckle strip. A limiting hole is provided in the middle of the slot, and a hexagonal limiting post is provided at the corresponding position of the buckle strip. The protruding thickness of the hexagonal limiting post matches the wall thickness of the slot.

[0010] To further enhance installation strength, one side of the exterior wall panel has a protrusion, and the other side has a groove that matches the protrusion. Adjacent exterior wall panels are joined together by the matching of the protrusion and groove. Simultaneously, the protrusion and groove can be installed by tapping, thereby improving the connection strength after installation and preventing the exterior wall panels from shifting during use.

[0011] The limiting hole is circular in shape, and its diameter matches the inner diameter of the hexagonal limiting post. This design ensures that the hexagonal limiting post maintains a linear connection rather than a surface connection when passing through the limiting hole. This avoids excessive installation difficulties in actual use and also serves as a preliminary positioning tool.

[0012] To allow bolts to be embedded in the retaining strip, the retaining strip has countersunk holes and through holes. The countersunk holes are used to install expansion bolts to fix the retaining strip to the wall. The through holes correspond to the positions of the hexagonal limiting posts, and their diameter is smaller than the inscribed circle diameter of the hexagonal limiting posts. During installation, the head of the bolt is embedded in the countersunk hole, and the tail of the bolt is embedded in the wall.

[0013] To further enhance the installation strength between the exterior wall panels, the cross-section of the protrusion is trapezoidal or rectangular, and the inner wall of the groove forms an interference fit with the outer wall of the protrusion.

[0014] In order to completely cover the entire snap-on strip with the exterior wall panel, the depth of the snap-on groove in the exterior wall panel is half the vertical height of the snap-on strip.

[0015] The bottom of the slot in the exterior wall panel is provided with an elastic buffer layer, which is made of rubber or silicone. The elastic buffer layer is used to absorb the impact force during installation, reduce the damage to the panels caused by rigid contact, and fill tiny gaps to improve the sealing of the joints.

[0016] A waterproof sealant layer is provided on the contact surface between the exterior wall panel and the fastener strip, and the sealant layer is continuously distributed along the edge of the groove. A waterproof sealant layer is provided on the contact surface between the exterior wall panel and the fastener strip, as well as at the joint of adjacent exterior wall panels. The sealant layer is continuously distributed along the edge of the groove and the joint, forming multiple waterproof barriers to effectively prevent rainwater penetration.

[0017] Working principle:

[0018] S1. Clip strip installation: Fix the clip strip horizontally to the wall using expansion bolts, ensuring the base plate is flat and adjacent clip strips are on the same horizontal line with an error of ≤1cm.

[0019] S2. Exterior wall panel installation: Align the slot of the exterior wall panel with the mounting slot of the buckle strip, push the exterior wall panel vertically so that the slot is embedded in the mounting slot, and at the same time align the hexagonal limiting post with the limiting hole.

[0020] S3. Horizontal Splicing: Adjacent exterior wall panels are horizontally spliced ​​using the interlocking of protrusions and grooves. During installation, first align the protrusion of one exterior wall panel with the groove of another, and tap it horizontally until an interference fit is achieved. After installation, install the upper layer of snap-fit ​​strips and exterior wall panels. Beneficial Effects

[0021] This splicing structure relies on the precise sliding fit mechanism of the snap-fit ​​strips and slots, as well as the innovative mechanical interlocking design of the protrusions and grooves between the exterior wall panels. Furthermore, the concealed installation structure of the snap-fit ​​strips and the self-positioning splicing mode between the panels reduce splicing seam errors, thus ensuring the overall flatness of the wall surface. Moreover, the installation process requires no specialized tools or cumbersome procedures; a single person can complete the precise installation of the exterior wall panels in a short time.

[0022] Furthermore, since no installation holes or additional exposed components are required on the surface of the exterior wall panels, after connection, the system has no traditional exposed connectors such as hanging parts and screws, and there are no installation marks on the surface of the exterior wall panels, forming a continuous and unified facade effect. This effectively avoids the visual disjointing problem caused by exposed nail holes and hanging parts in traditional processes, thus meeting the ultimate pursuit of spatial aesthetics, craftsmanship precision and building quality in high-end buildings. It is especially suitable for landmark buildings, commercial complexes and high-end residential projects with strict requirements for building appearance. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the assembled exterior wall panels of a prefabricated building.

[0024] Figure 2 is a schematic diagram of the back of the assembled exterior wall panel;

[0025] Figure 3 is a partial exploded view of the prefabricated exterior wall panel and the fastening strip;

[0026] Figure 4 is a schematic diagram of the hexagonal limiting post;

[0027] Figure 5 is a side view of a single exterior wall panel;

[0028] Figure 6 is a schematic diagram of the limiting hole in a single exterior wall panel;

[0029] In the diagram: 1. Exterior wall panel, 11. Protrusion, 12. Groove, 13. Slot, 14. Limiting hole, 2. Clip strip, 21. Countersunk hole, 22. Through hole, 23. Hexagonal limiting post. Detailed Implementation

[0030] To enhance understanding of this utility model, it will be further described in detail below with reference to embodiments and accompanying drawings. These embodiments are merely illustrative and do not constitute a limitation on the scope of protection of this utility model. Embodiments

[0031] As shown in Figures 1-6, a prefabricated building exterior wall panel installation structure includes a buckle strip 2 horizontally fixed to the wall and an exterior wall panel 1 installed on the buckle strip 2. The upper and lower ends of the exterior wall panel 1 are provided with a groove 13 with a width matching the thickness of the buckle strip 2.

[0032] The outer wall panel has a limiting hole 14 in the middle. The corresponding position of the buckle strip 2 has a hexagonal limiting post 23 with a protrusion thickness matching the wall thickness of the groove 13. One side of the outer wall panel 1 has a protrusion 11 and the other side has a groove 12 that matches the protrusion 11. The cross-section of the protrusion 11 is rectangular and forms an interference fit with the inner wall of the groove 12. The buckle strip 2 has a countersunk hole 21 for installing expansion bolts to fix the wall and a through hole 22 corresponding to the position of the hexagonal limiting post 23. The diameter of the through hole 22 is smaller than the diameter of the inscribed circle of the hexagonal limiting post 23.

[0033] The depth of the groove 13 on the exterior wall panel 1 is half the height of the buckle strip 2, thus completely covering the buckle strip 2. The bottom of the groove 13 is provided with an elastic buffer layer of rubber or silicone material. The contact surface between the exterior wall panel 1 and the buckle strip 2 is continuously provided with a waterproof sealant layer along the edge of the groove 13.

[0034] The installation process is as follows:

[0035] S1. Wall pretreatment: Clean the wall surface and mark the horizontal line for installing the clip strip 2, with an error of ≤2mm. Clip strip fixing: Align the clip strip 2 with the horizontal line and fix it to the wall through the countersunk hole 21 with M8 expansion bolts, with a bolt spacing of 500mm, to ensure that the clip strip 2 is flat and without warping.

[0036] S2. Exterior wall panel installation: Take the first exterior wall panel 1, align the lower end slot 13 with the buckle strip 2 for installation, and slowly push it vertically until the hexagonal limiting post 23 is aligned with the limiting hole 14; Take the adjacent exterior wall panel 1, align its groove 12 with the protrusion 11 of the first exterior wall panel 1, and tap it until it is interference fit to complete the horizontal splicing.

[0037] S3. Sealing treatment: Inject waterproof sealant into the splice seam (where the protrusion 11 and the groove 12 meet) and the edge of the slot 13 to form a continuous sealing layer with a thickness of ≥3mm.

[0038] S4. Install layer by layer: After installing the first layer of exterior wall panel 1, install the next layer of clip strip 2, and install the exterior wall panel 1 layer by layer according to step S2.

[0039] In summary, this invention, through the innovative connection design between the snap-on strip 2 and the exterior wall panel 1 (the slot 13 engages with the snap-on strip 2, and the protrusion 11 interlocks with the groove 12), achieves rapid installation, precise positioning, and reliable connection of the prefabricated exterior wall panel, effectively solving the problems of low installation efficiency, poor aesthetics, and insufficient waterproof performance in the prior art, and has significant technological progress and engineering application value.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rapid and precise splicing structure for prefabricated building exterior wall panels, characterized in that, It includes a buckle strip fixed horizontally to the wall and an exterior wall panel installed on the buckle strip; the upper and lower ends of the exterior wall panel are provided with a buckle groove, the width of the buckle groove is matched with the thickness of the buckle strip, a limiting hole is provided in the middle of the buckle groove, and a hexagonal limiting post is provided at the corresponding position of the buckle strip, the protruding thickness of the hexagonal limiting post is matched with the wall thickness of the buckle groove.

2. The rapid and precise splicing structure for prefabricated building exterior wall panels according to claim 1, characterized in that... One side of the exterior wall panel has a protrusion, and the other side of the exterior wall panel has a groove that matches the protrusion. Two adjacent exterior wall panels are joined together by matching the protrusion and the groove.

3. The rapid and precise splicing structure for prefabricated building exterior wall panels according to claim 2, characterized in that... The limiting hole is circular in shape, and its diameter matches the inner diameter of the hexagonal limiting post.

4. A rapid and precise splicing structure for prefabricated building exterior wall panels according to claim 1, characterized in that... The buckle strip has a countersunk hole and a through hole. The countersunk hole is used to install expansion bolts to fix the buckle strip to the wall. The through hole corresponds to the position of the hexagonal limiting post and its diameter is smaller than the inscribed circle diameter of the hexagonal limiting post.

5. A rapid and precise splicing structure for prefabricated building exterior wall panels according to claim 2, characterized in that... The cross-section of the protrusion is trapezoidal or rectangular, and the inner wall of the groove and the outer wall of the protrusion form an interference fit.

6. A rapid and precise splicing structure for prefabricated building exterior wall panels according to claim 1, characterized in that... The groove depth of the exterior wall panel is half the height of the buckle strip.

7. A rapid and precise splicing structure for prefabricated building exterior wall panels according to claim 1, characterized in that... The bottom of the slot of the exterior wall panel is provided with an elastic buffer layer, which is made of rubber or silicone.

8. A rapid and precise splicing structure for prefabricated building exterior wall panels according to any one of claims 1-7, characterized in that... The contact surface between the exterior wall panel and the buckle strip is provided with a waterproof sealant layer, which is continuously distributed along the edge of the buckle groove.

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