Assembling structure and construction method of prefabricated exterior wall

Abstract

A prefabricated exterior wall assembly structure and construction method are used to solve the technical problem that GRC exterior wall decorative materials and assembled exterior walls cannot be firmly connected by bonding. The structure comprises a vertical prefabricated exterior wall and a vertical prefabricated wall panel assembled and bonded to the prefabricated exterior wall. Two connecting rods are embedded in the prefabricated wall panel and extend outward from the same side of the prefabricated wall panel and face the prefabricated exterior wall. The connecting rods are perpendicular to the prefabricated wall panel surface. Two embedded pipes are embedded in the prefabricated exterior wall and pass through the prefabricated exterior wall. The two connecting rods pass through the two embedded pipes and extend out of the embedded pipes respectively. Both connecting rods are threaded and have opposite thread directions. A driving mechanism that can be threadedly matched with the two connecting rods is provided between the ends of the two connecting rods extending out of the embedded pipes. The present invention has simple structural improvements and is easy to assemble. It is mainly used for assembling prefabricated exterior walls and prefabricated wall panels.

Description

Technical Field

[0001] The present invention relates to the technical field of exterior wall and exterior wall panel construction in building construction, and in particular to an assembly structure of a prefabricated exterior wall and a construction method thereof. Background Art

[0002] Glass fiber reinforced cement (GRC) products are a new type of composite material developed worldwide in the past 30 years. GRC's basic components are cement, sand, fiber, and water, with polymers, admixtures, and other materials added to improve its performance. GRC's numerous advantages, including lightweight, high strength, thermal insulation, waterproofness, fire resistance, excellent plasticity, and reasonable cost, have earned it widespread recognition within the materials industry both domestically and internationally. Its application in a wide range of fields, including construction, municipal engineering, agricultural engineering, water conservancy projects, and landscape engineering, has yielded significant technical and economic benefits, demonstrating broad development prospects. Currently, glass fiber reinforced cement (GRC) products are being used as exterior wall decoration materials in building construction.

[0003] In the traditional field of building construction, the exterior wall structure of the main structure of the building is generally constructed by cast-in-place method, and then the exterior wall decoration materials are applied on the outside of the exterior wall. This method is very dangerous because the exterior wall decoration materials are applied on the outside of the main body of the building and in a high-altitude environment. With the emergence of prefabricated and assembled exterior wall construction technology, people began to explore the method of directly applying exterior wall decoration materials on the assembled exterior wall, and then assembling the prefabricated and assembled exterior wall into the main structure of the building.

[0004] The exterior wall decoration materials processed from glass fiber reinforced cement (GRC) products are thin and light in weight. Some material processing companies directly use bonding to bond the exterior wall decoration materials processed from glass fiber reinforced cement (GRC) products to prefabricated exterior walls, and then directly assemble the prefabricated exterior walls to the main body of the building. This method cannot firmly combine the exterior wall decoration materials processed from glass fiber reinforced cement (GRC) products with the prefabricated walls, and the service life of the main body of the building is generally long. This traditional connection method cannot meet the service life requirements of the design life of the main structure of the building. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and introduce a prefabricated exterior wall assembly structure and construction method to solve the technical problem mentioned in the background technology that the GRC exterior wall decoration material and the assembled exterior wall cannot be firmly connected by bonding.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A prefabricated exterior wall assembly structure includes a vertical prefabricated exterior wall and a vertical prefabricated wall panel assembled and fitted with the prefabricated exterior wall, wherein two connecting rods are embedded in the prefabricated wall panel, extending outward from the same side of the prefabricated wall panel and facing the prefabricated exterior wall, and the connecting rods are perpendicular to the prefabricated wall panel surface; two embedded pipes are embedded in the prefabricated exterior wall, and the two connecting rods pass through the two embedded pipes and extend out of the embedded pipes respectively; both connecting rods are provided with threads and the thread directions are opposite; a driving mechanism that can cooperate with the threads of the two connecting rods is provided between the ends of the two connecting rods extending out of the embedded pipes, for driving the two connecting rods to move along the penetration direction to abut and lock the prefabricated wall panel on the prefabricated exterior wall.

[0008] Working principle: the prefabricated wall panels are aligned with the prefabricated exterior walls, and the two connecting rods are correspondingly inserted into the two embedded pipes, and the ends of the two connecting rods away from the prefabricated wall panels are brought into contact with the driving mechanism, and the two connecting rods are driven to move along the insertion direction by means of the threaded matching relationship between the driving mechanism and the connecting rods, and the prefabricated wall panels are gradually brought closer to the prefabricated exterior walls. As the connecting rods continue to move, the prefabricated wall panels will eventually be firmly attached to the prefabricated exterior walls.

[0009] The beneficial effects of the present invention are:

[0010] The present invention utilizes the connecting rod and the driving mechanism, which drives the connecting rod to move along the insertion direction, thereby firmly attaching the prefabricated wall panel to the prefabricated exterior wall, solving the technical problem mentioned in the background art that the GRC exterior wall decoration material and the prefabricated exterior wall cannot be firmly connected by bonding, which is beneficial to ensuring structural safety and improving the service life of the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of an embodiment of the present invention;

[0012] Figure 2 for Figure 1 A magnified schematic diagram of the structure at center A;

[0013] Figure 3 for Figure 1 A magnified schematic diagram of the structure at B in the middle.

[0014] Explanation of the accompanying drawings: prefabricated exterior wall 1, prefabricated wall panel 2, connecting rod 3, embedded pipe 4, driving mechanism 5, driving gear 5a, driven gear 5b, mounting groove 6, first annular limiting groove 7, first embedded rod 8, first connecting ball 9, second annular limiting groove 10, second embedded rod 11, second connecting ball 12, rotating handle 13, blocking block 14, hollow rod 15, through hole 16, snap-in hole 17, pop-up snap-in mechanism 18, compression spring 18a, snap block 18b, reinforcing plate 19. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 As shown, a prefabricated exterior wall assembly structure includes a vertical prefabricated exterior wall 1 and a vertical prefabricated wall panel 2 assembled and bonded with the prefabricated exterior wall 1, wherein the prefabricated wall panel 2 is pre-embedded with two upper and lower connecting rods 3 extending out of the same side of the prefabricated wall panel 2 and facing the prefabricated exterior wall 1, and the connecting rods 3 are perpendicular to the panel surface of the prefabricated wall panel 2, and a reinforcing plate 19 is pre-embedded in the prefabricated wall panel 2, and the two connecting rods 3 are fixedly connected to the reinforcing plate 19, further strengthening the connection between the two connecting rods 3, thereby further strengthening the pre-embedded firm strength of the two connecting rods 3 in the prefabricated wall panel 2. Two embedded pipes 4 that penetrate the prefabricated exterior wall 1 are embedded in the prefabricated exterior wall 1, and two connecting rods 3 are correspondingly passed through the two embedded pipes 4 and extend out of the embedded pipes 4. Both connecting rods 3 are threaded and the thread directions are opposite. A driving mechanism 5 that can be threadedly matched with the ends of the two connecting rods 3 is provided between the ends of the two connecting rods 3 that extend out of the embedded pipes 4, and is used to drive the two connecting rods 3 to move along the penetration direction to abut and lock the prefabricated wall panel 2 on the prefabricated exterior wall 1. The drive mechanism 5 comprises a driving gear 5a mounted on the prefabricated exterior wall 1 and rotatable about its own axis, and two driven gears 5b mounted on the prefabricated exterior wall 1, each meshing with the driving gear 5a and rotatable about its own axis. The central holes of the two driven gears 5b are threaded along the circumferential sidewalls. The threaded ends of the two connecting rods 3 pass through the central holes of the corresponding driven gears 5b and are threadedly connected to the corresponding driven gears 5b. This arrangement can simultaneously and synchronously drive the two connecting rods 3 in directional movement, is simple to operate, and has low production costs. The moving connecting rods 3 can be adjusted to securely position the connected rods 3, ensuring that the prefabricated wall panels 2 are stably attached to the prefabricated exterior wall 1. A mounting slot 6 is defined on the sidewall of the prefabricated exterior wall 1 on the side away from the prefabricated wall panels 2. The driving gear 5a and the driven gear 5b are both mounted within the mounting slot 6, ensuring that the prefabricated exterior wall 1 forms a normal usable room after being installed on the main structure of the building. A blocking block 14 for blocking the mounting groove 6 is detachably connected to the opening of the mounting groove 6. The connection between the blocking block 14 and the side wall of the mounting groove 6 is coated with a resin adhesive. The blocking block 14 is provided mainly to block the mounting groove 6 to facilitate subsequent decoration processes such as painting of the prefabricated exterior wall 1. The resin adhesive can further strengthen the connection between the blocking block 14 and the mounting groove 6, prevent the blocking block 14 from falling off, and ensure structural safety.

[0017] like Figure 1 and Figure 3As shown, a first annular limiting groove 7 with a circular cross-section is provided on the circumferential side wall on one side of the driving gear 5a, and first embedded rods 8 distributed in a circumferential manner are pre-embedded on the side wall at the position corresponding to the first annular limiting groove 7 in the mounting groove 6. A first connecting ball 9 is fixed on each of the first embedded rods 8, and each of the first connecting balls 9 is slidably limited in the first annular limiting groove 7 for positioning and rotation of the driving gear 5a. A second annular retaining groove 10 with a circular cross-section is formed on the circumferential sidewall of one side of the driven gear 5b. A second embedded rod 11 is pre-embedded in a circumferential distribution on the sidewall of the mounting groove 6 at the position corresponding to the second annular retaining groove 10. Each of the second embedded rods 11 is fixed with a second connecting ball 12. Each of the second connecting balls 12 is slidably retained within the second annular retaining groove 10 for positioning and rotating the driven gear 5b. This method achieves positioning and support for the driving gear 5a and the driven gear 5b, while ensuring that the driving gear 5a and the driven gear 5b can flexibly rotate and cooperate. A rotating handle 13 is fixed to the inner wall of the center hole of the driving gear 5a, extending outside the center hole of the driving gear 5a. The rotating shaft of the rotating handle 13 is colinear with the axis of the driving gear 5a. The driving gear 5a is driven by rotating the handle 13, which saves manpower and improves operability.

[0018] like Figure 1 and Figure 2 As shown, a hollow rod 15 is embedded in the prefabricated wall panel 2, which is parallel to the connecting rod 3 and extends out of the prefabricated wall panel 2. The hollow rod 15 has a rectangular cross-section, and a penetration hole 16 is reserved on the prefabricated exterior wall 1 for the hollow rod 15 to fit through. A clamping hole 17 connected to the penetration hole 16 is reserved on the side wall of the penetration hole 16. The hollow rod 15 opens at the position corresponding to the clamping hole 17, and a pop-up clamping mechanism 18 is provided in the cavity of the hollow rod 15 corresponding to the clamping hole 17 for clamping in the clamping hole 17. This method is mainly to further strengthen the stable connection between the prefabricated wall panel 2 and the prefabricated exterior wall 1. Through the pop-up clamping mechanism 18, the prefabricated wall panel 2 can be further prevented from being separated from the prefabricated exterior wall 1. The pop-up latching mechanism 18 includes a compression spring 18a that releases elastic force toward the latching hole 17 and a latching block 18b fixed to the released end of the compression spring 18a, which is used to pass through the opening of the hollow rod 15 at the position corresponding to the latching hole 17 and be latched in the latching hole 17. This method can quickly push the latching block 18b into the corresponding latching hole 17, has a simple structure and is sensitive to response.

[0019] A construction method for a prefabricated exterior wall assembly structure comprises the following steps:

[0020] S01, pre-embed one end of the two connecting rods 3 in the prefabricated wall panel 2, and make the other end of the two connecting rods 3 extend out of the prefabricated wall panel 2;

[0021] S02, embedding two embedded pipes 4 in the prefabricated exterior wall 1, and making the two embedded pipes 4 correspond to the two connecting rods 3 in a one-to-one manner;

[0022] S03, place the prefabricated wall panels 2 close to the prefabricated exterior wall 1, and insert the connecting rods 3 on the prefabricated wall panels 2 into the embedded pipes 4 one by one, and push the prefabricated wall panels 2 to move the connecting rods 3 along the insertion direction until they pass through the embedded pipes 4;

[0023] S04. Insert the ends of the two connecting rods 3 extending from one end of the embedded pipe 4 into the center holes of the two driven gears 5b respectively, so that the two connecting rods 3 are threadedly engaged with the two driven gears 5b;

[0024] S05. Start the driving mechanism 5 and rotate the rotating handle 13. The rotating handle 13 will drive the driving gear 5a to rotate, and the driving gear 5a will drive the two driven gears 5b meshing with it to rotate synchronously. At this time, the two connecting rods 3 will continue to move along the penetration direction, and the two connecting rods 3 will drive the prefabricated wall panels 2 to continue to move until the prefabricated wall panels 2 are in contact with the prefabricated exterior wall 1.

[0025] Working principle: the prefabricated wall panel 2 is aligned with the prefabricated exterior wall 1, epoxy resin adhesive is applied on the opposite sides between the prefabricated wall panel 2 and the prefabricated exterior wall 1, and the two connecting rods 3 are correspondingly inserted into the two embedded pipes 4, and the hollow rod 15 is inserted into the corresponding reserved holes, and the prefabricated wall panel 2 is continued to be moved so that the ends of the two connecting rods 3 away from the prefabricated wall panel 2 are inserted into the center hole of the driven gear 5b. At this time, the threads on the circumferential side walls of the center hole of the driven gear 5b form a threaded fit with the threads on the connecting rod 3, and then the rotating handle 13 is gripped and shaken to rotate the driving gear 5a. The rotation of the driving gear 5a will drive the two driven gears 5b to rotate, and then the two connecting rods 3 will continue to move along the insertion direction, and the prefabricated wall panel 2 will continue to approach the prefabricated exterior wall 1;

[0026] As the prefabricated wall panel 2 moves, the hollow rod 15 located in the reserved hole also continues to move along the penetration direction. When the hollow rod 15 moves to the position where the opening on the hollow rod 15 corresponds to the position of the clamping hole 17, the compression spring 18a begins to release energy and stretch, thereby driving the clamping block 18b to penetrate the opening on the hollow rod 15 and be clamped in the corresponding clamping hole 17 at the same time. At this time, the prefabricated exterior wall 1 and the prefabricated wall panel 2 are in contact and further bonded together through the epoxy resin adhesive between the two. Afterwards, the epoxy resin adhesive is also applied to the connection between the installation groove 6 and the blocking block 14. Finally, the blocking block 14 is clamped and installed at the opening of the installation groove 6. At this time, the installation groove 6 is blocked, and the entire assembly process between the prefabricated exterior wall 1 and the prefabricated wall panel 2 is completed.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A prefabricated exterior wall assembly structure, characterized by: The invention comprises a vertical prefabricated exterior wall (1) and a vertical prefabricated wall panel (2) assembled and fitted with the prefabricated exterior wall (1); two connecting rods (3) extending outward from the same side of the prefabricated wall panel (2) and facing the prefabricated exterior wall (1) are embedded in the prefabricated wall panel (2); the connecting rods (3) are perpendicular to the surface of the prefabricated wall panel (2); two embedded pipes (4) penetrating the prefabricated exterior wall (1) are embedded in the prefabricated exterior wall (1); the two connecting rods (3) are correspondingly passed through the two embedded pipes (4) and extended out of the embedded pipes (4); the two connecting rods (3) are both provided with threads and the thread directions are opposite; a driving mechanism (5) capable of being threadedly matched with the two connecting rods (3) is provided between the ends of the two connecting rods (3) extending out of the embedded pipes (4), and is used to drive the two connecting rods (3) to move along the penetration direction so as to abut and lock the prefabricated wall panel (2) on the prefabricated exterior wall (1); The driving mechanism (5) comprises a driving gear (5a) provided on the prefabricated exterior wall (1) and two driven gears (5b) provided on the prefabricated exterior wall (1) and meshed with the driving gear (5a). The circumferential side walls of the center holes of the two driven gears (5b) are both threaded. Two connecting rods (3) pass through the center holes of the corresponding driven gears (5b) and are threadedly connected to the corresponding driven gears (5b). The prefabricated exterior wall (1) is provided with a mounting groove (6) on a side wall away from the prefabricated wallboard (2), and the driving gear (5a) and the driven gear (5b) are both arranged in the mounting groove (6); A blocking block (14) for blocking the installation groove (6) is detachably connected to the opening of the installation groove (6), and a resin adhesive is applied to the connection between the blocking block (14) and the side wall of the installation groove (6); A hollow rod (15) is embedded in the prefabricated wall panel (2), which is parallel to the connecting rod (3) and extends out of the prefabricated wall panel (2). The hollow rod (15) has a rectangular cross-section. A through hole (16) is reserved on the prefabricated exterior wall (1) for the hollow rod (15) to be adapted to be inserted therein. A clamping hole (17) communicating with the through hole (16) is reserved on the side wall of the through hole (16). The hollow rod (15) is opened at a position corresponding to the clamping hole (17). A pop-up clamping mechanism (18) is provided in the cavity of the hollow rod (15) corresponding to the clamping hole (17) for clamping in the clamping hole (17). The pop-up latching mechanism (18) comprises a compression spring (18a) that releases elastic force toward the latching hole (17), and a latching block (18b) fixed to the releasing end of the compression spring (18a), so as to pass through an opening at a position of the hollow rod (15) corresponding to the latching hole (17) and be latched in the latching hole (17).

2. The prefabricated exterior wall assembly structure according to claim 1, characterized in that: A first annular limiting groove (7) with a circular cross section is provided on a circumferential side wall of one side of the driving gear (5a); first embedded rods (8) distributed in a circumferential manner are embedded on the side wall of the mounting groove (6) at a position corresponding to the first annular limiting groove (7); a first connecting ball (9) is fixed to each of the first embedded rods (8); and each of the first connecting balls (9) is slidably limited in the first annular limiting groove (7) for positioning and rotating the driving gear (5a).

3. The prefabricated exterior wall assembly structure according to claim 1, characterized in that: A second annular limiting groove (10) with a circular cross section is provided on a circumferential side wall of one side of the driven gear (5b); second embedded rods (11) distributed in a circumferential manner are embedded on the side wall of the mounting groove (6) at a position corresponding to the second annular limiting groove (10); a second connecting ball (12) is fixed to each of the second embedded rods (11); and each of the second connecting balls (12) is slidably limited in the second annular limiting groove (10) for positioning and rotating the driven gear (5b).

4. The prefabricated exterior wall assembly structure according to any one of claims 1 to 3, characterized in that: A rotating handle (13) extending out of the central hole of the driving gear (5a) is fixed on the inner wall of the central hole of the driving gear (5a), and the rotating shaft of the rotating handle (13) is colinear with the axis of the driving gear (5a).

5. The construction method of the prefabricated exterior wall assembly structure according to claim 1, characterized in that: The following steps are included: S01. Pre-embedding one end of the two connecting rods (3) in the prefabricated wall panel (2), and allowing the other end of the two connecting rods (3) to extend out of the prefabricated wall panel (2); S02, pre-buried two pre-buried pipes (4) in the prefabricated exterior wall (1), and ensure that the two pre-buried pipes (4) and the two connecting rods (3) form a one-to-one correspondence; S03, placing the prefabricated wall panel (2) close to the prefabricated exterior wall (1), and inserting the connecting rods (3) on the prefabricated wall panel (2) into the embedded pipes (4) one by one, pushing the prefabricated wall panel (2) to move the connecting rods (3) along the insertion direction until they pass through the embedded pipes (4); S04, extending the ends of the two connecting rods (3) from one end of the embedded pipe (4) and threading them into engagement with the driving mechanism (5); S05. Start the driving mechanism (5). The driving mechanism (5) is threadedly engaged with the two connecting rods (3) and drives the two connecting rods (3) to continuously move along the threading direction. The two connecting rods (3) drive the prefabricated wall panel (2) to continuously move until the prefabricated wall panel (2) is in contact with the prefabricated exterior wall (1).

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