Assembly type external wall panel mounting and adjusting device

Abstract

The invention discloses a fabricated external wall panel mounting and adjusting device. The mounting and adjusting device comprises an anchor bolt, a connecting steel plate, a hemispherical steel plate, an adjusting rod, a rotating hinge, a connecting screw rod and a sleeve bolt, and one end of the anchor bolt is pre-buried in a main body structural beam; the connecting steel plate is fixedly connected with the anchor bolt; the hemispherical steel plate is buckled to the surface of the connecting steel plate, a round hole is formed in the middle of the spherical surface of the hemispherical steel plate, one end of the adjusting rod is a round expanded head, and the other end of the adjusting rod is connected with the connecting screw through a rotating hinge; a sleeve bolt is arranged at the end part of the connecting screw rod; when the assembly type external wall panel is fixed, the assembly type external wall panel is fixedly connected with the sleeve bolt through the fixing nut, and therefore fixed connection of the assembly type external wall panel and the main body structure is achieved. The problems of low anti-seismic property and poor mounting precision of rigid connection of the fabricated wallboard and the main body structure are solved.

Description

Technical Field

[0001] This application belongs to the field of building construction, and in particular relates to a prefabricated exterior wall panel installation and adjustment device. Background Technology

[0002] In recent years, prefabricated construction technology has developed rapidly due to the overall development needs of the industry and the advancement of industrialized building technology. Prefabricated construction technology is widely used and developed in various types of buildings because of its advantages such as high construction efficiency, short construction period, stable quality and safety, green environmental protection and sustainable development, high material utilization rate and low labor rate.

[0003] In various types of buildings, the exterior wall is an essential structural component for fulfilling the building's functional requirements. However, the construction of this secondary structure requires a significant investment of personnel and equipment, resulting in higher costs. Prefabricated exterior wall panels, as a type of prefabricated component that has emerged in recent years, offer advantages such as high construction efficiency, low power consumption, and low cost.

[0004] Various types of exterior wall panel connection devices exist. For example, a leveling device for exterior wall panels in prefabricated buildings (202020699736.3) belongs to the field of prefabricated building technology. It includes an upper connecting component and a lower connecting component. The upper connecting component includes an upper support base, an upper connecting seat, and an upper adjusting bolt. A ball head is rotatably mounted on the upper support base. The rod of the upper adjusting bolt is screwed to the upper connecting seat, and the end of the upper adjusting bolt is threaded to the upper part of the ball head. The lower connecting component includes a lower support base, a lower adjusting bolt, and a lower connecting seat. The lower support base has a horizontal portion. The rod of the lower adjusting bolt is screwed to the lower connecting seat, and the end of the lower adjusting bolt abuts against the upper surface of the horizontal portion. This technical solution has a simple structure, is easy to operate, and facilitates the leveling of exterior wall panels, improving the installation efficiency of exterior wall panels.

[0005] However, the installation of prefabricated exterior wall panels currently mostly uses the method of directly embedding bolts. This method is affected by the work site environment and personnel operation, resulting in certain installation errors, which affect the forming effect of the exterior wall facade. Prefabricated exterior wall panels are mostly rigidly connected to the main structure, resulting in poor seismic resistance. The joints are treated by reserving burred steel bars and then pouring them in post, but the construction quality at the joints is difficult to guarantee due to the "cold and heat bridges" at the connection. Currently, the waterproofing problem at the joints of prefabricated exterior wall panels is mainly solved by tongue and groove joints, but the waterproofing effect of vertical joints is not ideal due to their orientation. Summary of the Invention

[0006] The purpose of this application is to address the problems of low seismic performance and poor installation accuracy of rigid connections between prefabricated wall panels and the main structure, as well as issues such as thermal bridging and waterproofing at the joints caused by post-casting. This application discloses a prefabricated exterior wall panel installation adjustment device, which ensures the connection quality between the prefabricated exterior wall panel and the main structure, improves the waterproofing effect at the joints, enhances the seismic performance at the connection points between the prefabricated exterior wall panel and the main structure, avoids thermal bridging at the joints, and improves the installation accuracy of the prefabricated exterior wall panel and the overall building facade finish.

[0007] The objective of this application is achieved through the following technical solution: An installation and adjustment device for prefabricated exterior wall panels is disclosed. The installation and adjustment device is mounted on a main structural beam, and the prefabricated exterior wall panels are fixedly connected to the main structural beam through the installation and adjustment device. The installation and adjustment device includes: anchor bolts, connecting steel plates, hemispherical steel plates, adjusting rods, rotating hinges, connecting screws, and sleeve bolts. One end of the anchor bolt is embedded in the main structural beam, and the other end extends out of the main structural beam. The connecting steel plate is disposed on the surface of the main structural beam and is fixedly connected to the anchor bolts; The hemispherical steel plate is fastened to the surface of the connecting steel plate, and a circular hole is provided in the center of the spherical surface of the hemispherical steel plate. One end of the adjusting rod is a circular enlarged head, and the other end is connected to the connecting screw via a rotating hinge. The adjusting rod passes through the circular hole of the hemispherical steel plate, and the circular enlarged head is located in the hemispherical sealed space between the hemispherical steel plate and the connecting steel plate. The connecting screw is tree-fork shaped, and the end of the connecting screw is a sleeve bolt; When fixing prefabricated exterior wall panels, the panels are fixed by connecting them with sleeve bolts using fixing nuts, thereby achieving a fixed connection between the prefabricated exterior wall panels and the main structure.

[0008] According to a preferred embodiment, the installation adjustment device further includes: a steel chain; the adjustment rod has two pin holes in its middle, the two pin holes being perpendicular to each other and not intersecting. Two steel chains pass through the two pin holes respectively, and the two ends of the steel chains are fixed on the hemispherical steel plate to fix the angle of the adjusting rod relative to the hemispherical steel plate.

[0009] According to a preferred embodiment, the installation adjustment device further includes: a pin, the pin having a groove in the middle along the length of the rod, and a stud hole at the tail of the pin, the anti-loosening stud being screwed in through the stud hole to prevent the pin from falling off, so that the pin and the steel chain pass through the pin hole together and squeeze each other to limit and fix the steel chain.

[0010] According to a preferred embodiment, a rubber pad is also provided between the connecting steel plate and the main structural beam.

[0011] According to a preferred embodiment, the pre-embedded end of the anchor bolt is provided with a square steel plate, the anchor bolt is set perpendicular to the square steel plate, and the square steel plate is embedded in the main structural beam.

[0012] According to a preferred embodiment, the head of the fixing nut is round, and the center of the head has an internal hexagonal hole for easy tightening of the fixing nut. The edge of the head of the fixing nut is wrapped with water-swellable rubber.

[0013] According to a preferred embodiment, the prefabricated exterior wall panels are spliced ​​and fixed together by tongue and groove joints; a joint sealing groove is provided at the tongue and groove joint of the exterior wall surface, and after each wall panel is connected and fixed, the joint sealing groove is filled with sealant.

[0014] According to a preferred embodiment, a connecting rod is provided on the inner wall surface of the upper / left tongue-and-groove joint of the prefabricated exterior wall panel. One end of the connecting rod is embedded in the prefabricated exterior wall panel, and the other end is provided with a connecting rod bolt hole. During installation, insert the section with the connecting rod bolt hole into the pre-drilled hole on the lower / right tongue of the prefabricated exterior wall panel, and then connect and fix it with fastening bolts.

[0015] According to a preferred embodiment, the prefabricated exterior wall panel has a trapezoidal groove at the lower / right tongue and groove position on the exterior wall surface, and a waterproof clip at the upper / left tongue and groove position. A spring is connected to the base of the waterproof clip. During the connection of the wall panels, the waterproof clip is compressed, the spring descends, and the waterproof clip moves to the trapezoidal groove and then automatically pops out and snaps into the trapezoidal groove, thus completing the connection.

[0016] According to a preferred embodiment, the waterproof card is wrapped with water-swellable rubber on the outside.

[0017] The aforementioned main solution and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application. Those skilled in the art, after understanding the solution of this application, will realize that there are many combinations based on the prior art and common general knowledge, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here.

[0018] The beneficial effects of this application are: The application of hemispherical steel plate, adjusting rod, steel chain, pin, and rotating hinge in the installation and adjustment device of this application makes it a flexible structure. It not only realizes the adjustment of the installation error of the prefabricated exterior wall panel in three-dimensional space, but also improves its seismic performance and ensures the installation accuracy, quality and forming effect of the prefabricated exterior wall panel.

[0019] This application employs a tongue-and-groove splicing method, avoiding the impact of thermal bridging caused by post-casting of the splice seam on the assembly quality. Connecting rods are installed within the exterior wall panels to enhance the connection strength at the joints. The application of waterproof clips in the tongue-and-groove joints, waterproof clips, and water-swellable rubber covering the fixing nut heads, along with joint sealant, effectively solves the waterproofing problems at the joints and the bolt holes on the exterior wall panels. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation of the prefabricated exterior wall panels in this application; Figure 2 This is a schematic diagram of the installation and adjustment device structure in this application; Figure 3 This is a schematic diagram of the pin structure of this application; Figure 4 This is a schematic diagram of the installation of the connecting bolts in this application; Figure 5 This is a construction diagram of the joints of the prefabricated exterior wall panels in this application; Figure 6 This is a schematic diagram of the splicing installation of the prefabricated exterior wall panels in this application; Among them, 1-main structural column, 2-main structural beam, 3-prefabricated exterior wall panel, 4-installation adjustment device, 41-anchor bolt, 42-connecting steel plate, 43-rubber pad, 44-hemispherical steel plate, 45-adjusting rod, 451-pin hole, 46-steel chain, 47-pin, 471-groove, 472-anti-loosening stud, 473-stud hole, 48-rotating hinge, 49-connecting screw, 410-square Steel plate, 411-sleeve bolt, 5-exterior wall panel mounting bolt hole, 6-fixing nut, 7-water-swellable rubber, 8-internal hexagonal hole, 9-connecting rod, 91-connecting rod bolt hole, 10-reserved hole, 101-fastening bolt, 11-upper tongue and groove / left tongue and groove, 12-lower tongue and groove / right tongue and groove, 13-spring, 14-waterproof clip, 15-joint sealing groove, 16-sealant, 17-interior wall surface, 18-exterior wall surface. Detailed Implementation

[0021] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Furthermore, it should be noted that unless otherwise specified in this application, the specific structures, connections, positions, power sources, etc. involved are all things that a person skilled in the art can know without creative effort based on the prior art.

[0027] Example 1 refer to Figures 1 to 6 As shown in the figure, a prefabricated exterior wall panel installation adjustment device 4 is installed on the main structural beam 2, and the prefabricated exterior wall panel 3 is fixedly connected to the main structural beam 2 through the installation adjustment device 4.

[0028] Preferably, the installation adjustment device 4 includes: anchor bolt 41, connecting steel plate 42, hemispherical steel plate 44, adjusting rod 45, rotating hinge 48, connecting screw 49, and sleeve bolt 411.

[0029] In this design, one end of the anchor bolt 41 is embedded in the main structural beam 2, and the other end extends out of the main structural beam 2; the connecting steel plate 42 is disposed on the surface of the main structural beam 2 and is fixedly connected by the anchor bolt 41; the hemispherical steel plate 44 is fastened to the surface of the connecting steel plate 42, and the hemispherical steel plate 44 has a circular hole in the center of its spherical surface; one end of the adjusting rod 45 is a circular enlarged head, and the other end is connected to the connecting screw 49 via a rotating hinge 48; the adjusting rod 45 passes through the circular hole of the hemispherical steel plate 44, and the circular enlarged head is disposed in the hemispherical sealed space between the hemispherical steel plate 44 and the connecting steel plate 42; the connecting screw 49 is tree-branch shaped, and the end of the connecting screw 49 is a sleeve bolt 411; when fixing the prefabricated exterior wall panel 3, the prefabricated exterior wall panel 3 is fixedly connected to the sleeve bolt 411 by the fixing nut 6, thereby realizing the fixed connection between the prefabricated exterior wall panel 3 and the main structure.

[0030] Preferably, the installation adjustment device 4 further includes: a steel chain 46; the middle part of the adjustment rod 45 is provided with two pin holes 47 451, the two pin holes 47 451 are perpendicular to each other and do not intersect.

[0031] Two steel chains 46 pass through the two pin holes 451 respectively, and the two ends of the steel chains 46 are fixed on the hemispherical steel plate 44 to complete the angle fixation of the adjusting rod 45 relative to the hemispherical steel plate 44.

[0032] Furthermore, the installation adjustment device 4 also includes a pin 47, which has a groove 471 in the middle along the length of the rod and a stud hole 473 at the tail. An anti-dislodge stud 472 is screwed in through the stud hole 473 to prevent the pin 47 from falling off. Thus, the pin 47 and the steel chain 46 pass through the pin 47 hole 451 together and squeeze each other to limit and fix the steel chain 46.

[0033] This application utilizes a hemispherical steel plate and adjusting rod structure to enable multi-angle rotation adjustment of the adjusting rod 45. The steel chain and pin structure fixes the angle or position of the adjusting rod 45. The rotating hinge further enhances the angle adjustment capabilities of the end connecting screw.

[0034] Furthermore, the application of hemispherical steel plate, adjusting rod, steel chain, pin, and rotating hinge in the installation and adjustment device of this application makes it a flexible structure, which not only realizes the adjustment of the installation error of the prefabricated exterior wall panel in three-dimensional space, but also improves its seismic performance and ensures the installation accuracy, quality and forming effect of the prefabricated exterior wall panel.

[0035] Preferably, a rubber pad 43 is also provided between the connecting steel plate 42 and the main structural beam 2. This ensures the connection stability of the connecting steel plate 42.

[0036] Preferably, the pre-embedded end of the anchor bolt 41 is provided with a square steel plate 410, the anchor bolt 41 is perpendicular to the square steel plate 410, and the square steel plate is embedded in the main structural beam 2. This improves the structural stability of the anchor bolt 41.

[0037] Preferably, the head of the fixing nut 6 is round, and the center of the head is provided with an internal hexagonal hole 8 to facilitate tightening the fixing nut 6. The edge of the head of the fixing nut 6 is wrapped with water-swellable rubber 7.

[0038] Preferably, the prefabricated exterior wall panels 3 are spliced ​​and fixed together by tongue and groove joints; the tongue and groove joint of the exterior wall surface 18 is provided with a joint sealing groove 15, and after each wall panel is connected and fixed, the joint sealing groove 15 is filled with sealant 16.

[0039] Furthermore, a connecting rod 9 is provided at the inner wall surface 17 position of the upper tongue / left tongue 11 of the prefabricated exterior wall panel 3. One end of the connecting rod 9 is pre-embedded in the prefabricated exterior wall panel 3, and the other end is provided with a bolt hole for the connecting rod 9. During installation, the part with the bolt hole for the connecting rod 9 is inserted into the reserved hole 10 on the lower tongue / right tongue 12 of the prefabricated exterior wall panel 3, and then connected and fixed by fastening bolts 101.

[0040] Furthermore, the prefabricated exterior wall panel 3 has a trapezoidal groove 471 at the lower / right tongue-and-groove 12 position on the exterior wall surface 18, and a waterproof clip 14 at the upper / left tongue-and-groove 11 position. A spring 13 is connected to the base of the waterproof clip 14. During the wall panel connection process, the waterproof clip 14 is compressed, the spring 13 descends, and the waterproof clip 14 moves to the trapezoidal groove 471 and then automatically pops out, locking into the trapezoidal groove 471 to complete the connection. The waterproof clip 14 is also wrapped with water-swellable rubber 7 on its outer side.

[0041] The installation process of prefabricated exterior wall panels using the aforementioned installation and adjustment device can be as follows: 1. Construct the main structure, and simultaneously pre-embed anchor bolts 41 in the main structure beam 2.

[0042] 2. The prefabrication plant produces and processes the assembled exterior wall panels 3, and simultaneously reserves installation bolt holes 5 in the assembled exterior wall panels 3. A connecting rod 9 is installed at position 17 on the inner wall surface of the upper tongue / left tongue 11, and a hole 10 is reserved at position 12 on the inner wall surface of the lower tongue / right tongue 12. Tongue grooves are set on the four sides of the assembled exterior wall panels 3, a trapezoidal groove is opened at position 18 on the outer wall surface of the lower tongue / right tongue 12, a waterproof clip 14 is installed at position 11 on the outer wall surface of the upper tongue / left tongue 11, and a joint sealing groove 15 is opened at the tongue joint of the outer wall surface 18.

[0043] 3. During the engineering processing, assembly, and installation of the adjustment device 4, bolt holes are pre-drilled at both ends of the connecting steel plate 42 and the rubber pad 43. A circular hole is opened in the middle of the hemispherical steel plate 44. The adjustment rod is passed through the circular hole with the circular enlarged head inside the hemispherical steel plate 44. The hemispherical steel plate 44 is then welded firmly to the connecting steel plate 42. The steel chain 46 is passed through the pin hole 451 and welded and fixed to the hemispherical steel plate 44. The rotating hinge 48, the connecting screw 49, and the sleeve bolt 411 are installed.

[0044] 4. The prefabricated exterior wall panels 3 are transported to the site, and the positions of the exterior wall panels, embedded parts, and reserved holes are checked. Then, the rubber pads 43 are installed, and the finished installation adjustment device 4 is fixed to the main structural beam 2.

[0045] 5. Hoist the prefabricated exterior wall panel 3 to the installation position, correct the position of the exterior wall panel, and then insert it into the tongue and groove. During the insertion process, the waterproof clip 14 is compressed, the lower spring 13 descends, and the waterproof clip 14 automatically pops out after reaching the trapezoidal groove and is inserted into the trapezoidal groove.

[0046] 6. Rotate the adjusting rod 45 and the connecting screw 49 to adjust and verify the installation position of the prefabricated exterior wall panel 3. After the position verification and correction are completed, first insert the pin 47 into the pin hole 451, and then insert the anti-loosening stud 472 into the stud hole 473 to fix the steel chain 46; then put the fixing nut 6 into the mounting bolt hole 5 of the prefabricated exterior wall panel 3 and tighten it with a hex wrench.

[0047] 7. Tighten the bolts 101 at the reserved holes at the joint groove, and finally fill the joint sealing groove 15 at the joint with sealant 16 to complete the sealing.

[0048] 8. Repeat steps 4-7 to complete the installation of all prefabricated exterior wall panels 3, and then conduct the installation acceptance of the exterior wall panels.

[0049] The application of hemispherical steel plate, adjusting rod, steel chain, pin, and rotating hinge in the installation and adjustment device of this application makes it a flexible structure. It not only realizes the adjustment of the installation error of the prefabricated exterior wall panel in three-dimensional space, but also improves its seismic performance and ensures the installation accuracy, quality and forming effect of the prefabricated exterior wall panel.

[0050] This application employs a tongue-and-groove splicing method, avoiding the impact of thermal bridging caused by post-casting of the splice seam on the assembly quality. Connecting rods are installed within the exterior wall panels to enhance the connection strength at the joints. The application of waterproof clips in the tongue-and-groove joints, waterproof clips, and water-swellable rubber covering the fixing nut heads, along with joint sealant, effectively solves the waterproofing problems at the joints and the bolt holes on the exterior wall panels.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A prefabricated exterior wall panel installation and adjustment device, characterized in that, The installation adjustment device (4) is installed on the main structural beam (2), and the prefabricated exterior wall panel (3) is fixedly connected to the main structural beam through the installation adjustment device (4). The installation adjustment device (4) includes: anchor bolt (41), connecting steel plate (42), hemispherical steel plate (44), adjusting rod (45), rotating hinge (48), connecting screw (49), and sleeve bolt (411). One end of the anchor bolt (41) is embedded in the main structural beam (2), and the other end extends out of the main structural beam (2); The connecting steel plate (42) is set on the surface of the main structural beam (2) and fixedly connected by anchor bolts (41); The hemispherical steel plate (44) is fastened to the surface of the connecting steel plate (42), and a circular hole is provided in the center of the spherical surface of the hemispherical steel plate (44). One end of the adjusting rod (45) is a circular enlarged head, and the other end is connected to the connecting screw (49) via a rotating hinge (48). The adjusting rod (45) passes through the circular hole of the hemispherical steel plate (44), and the circular enlarged head is located in the hemispherical closed space between the hemispherical steel plate (44) and the connecting steel plate (42). The connecting screw (49) is tree-branch shaped, and the end of the connecting screw (49) is a sleeve bolt (411). When fixing the prefabricated exterior wall panel (3), the prefabricated exterior wall panel (3) is connected and fixed to the sleeve bolt (411) through the fixing nut (6), thereby realizing the fixed connection between the prefabricated exterior wall panel (3) and the main structure.

2. The prefabricated exterior wall panel installation and adjustment device as described in claim 1, characterized in that, The installation adjustment device (4) further includes: a steel chain (46); The adjusting rod (45) has two pin holes (451) in the middle. The two pin holes (451) are perpendicular to each other and do not intersect. Two steel chains (46) pass through two pin holes (451) respectively, and the two ends of the steel chains (46) are fixed on the hemispherical steel plate (44) to complete the angle fixation of the adjusting rod (45) relative to the hemispherical steel plate (44).

3. The prefabricated exterior wall panel installation and adjustment device as described in claim 2, characterized in that, The installation adjustment device (4) further includes: a pin (47). The pin (47) has a groove (471) in the middle along the length of the rod, and a stud hole (473) at the tail of the pin (47). The anti-loosening stud (472) is screwed in through the stud hole (473) to prevent the pin (47) from falling out. Thus, the pin (47) and the steel chain (46) pass through the pin hole (451) together, and squeeze each other to achieve the limiting and fixing of the steel chain (46).

4. The prefabricated exterior wall panel installation and adjustment device as described in claim 1, characterized in that, A rubber pad (43) is also provided between the connecting steel plate (42) and the main structural beam (2).

5. The prefabricated exterior wall panel installation and adjustment device as described in claim 1, characterized in that, The pre-embedded end of the anchor bolt (41) is provided with a square steel plate (410). The anchor bolt (41) and the square steel plate (410) are set perpendicularly. The square steel plate (410) is embedded in the main structural beam (2).

6. The prefabricated exterior wall panel installation and adjustment device as described in claim 1, characterized in that, The head of the fixing nut (6) is round, and the center of the head is provided with an internal hexagonal hole (8) to facilitate tightening the fixing nut (6). The edge of the head of the fixing nut (6) is wrapped with water-swellable rubber (7).

7. The prefabricated exterior wall panel installation and adjustment device as described in claim 1, characterized in that, The prefabricated exterior wall panels (3) are spliced ​​and fixed together by tongue and groove; the tongue and groove joint of the exterior wall surface (18) is provided with a joint sealing groove (15), and after each wall panel is connected and fixed, the joint sealing groove (15) is filled with sealant (16).

8. The prefabricated exterior wall panel installation and adjustment device as described in claim 7, characterized in that, A connecting rod (9) is provided at the inner wall surface (17) of the upper tongue / left tongue (11) of the prefabricated exterior wall panel (3). One end of the connecting rod (9) is embedded in the prefabricated exterior wall panel, and the other end is provided with a connecting rod bolt hole (91). During installation, the section with the connecting rod bolt hole (91) is inserted into the reserved hole (10) on the lower tongue / right tongue (12) of the prefabricated exterior wall panel (3), and then connected and fixed by fastening bolt (101).

9. The prefabricated exterior wall panel installation and adjustment device as described in claim 8, characterized in that, The prefabricated exterior wall panel (3) has a trapezoidal groove at the position of the lower tongue / right tongue (12) on the exterior wall surface (18). A waterproof clip (14) is provided at the upper tongue / left tongue (11) position. A spring (13) is connected to the root of the waterproof clip (14). During the connection of the wall panel, the waterproof clip (14) is compressed, the spring (13) descends, the waterproof clip (14) moves to the trapezoidal groove and then automatically pops out and is inserted into the trapezoidal groove to complete the connection.

10. The prefabricated exterior wall panel installation and adjustment device as described in claim 9, characterized in that, The waterproof card (14) is wrapped with water-swellable rubber (7) on the outside.

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