Prefabricated light external wall panel with three-dimensional adjustable dry-type connecting joints and assembling method

Abstract

The invention discloses a prefabricated light external wall panel with a three-dimensional adjustable dry-type connecting node and an assembling method, the light external wall panel comprises a wall panel, and further comprises a lower connecting node and an upper connecting node which are used for connecting the wall panel with a structure; the lower connecting node comprises a connecting piece, a lower node bolt for connecting the wallboard and the connecting piece, and a fastening bolt for connecting the structure and the connecting piece; the upper connecting node comprises a connecting plate and a swinging piece, and the connecting plate is connected with a structure through a fastening bolt; the swing part is located between the wall plate and the connecting plate and connected with the connecting plate through a connecting bolt, a second long round hole with a long shaft arranged in the length direction is formed in the swing part, a steel sleeve is arranged in the second long round hole, and the wall plate is connected with the swing part through an upper node bolt. The upper joint bolt penetrates through the steel sleeve and is fastened through first nuts arranged on the two sides of the steel sleeve. Rapid installation is achieved through the modular prefabricated parts, the three-dimensional adjustable and large-deformation coordination capacity is achieved, and the method is suitable for connection of the fabricated steel structure externally-hung wall plates.

Description

Technical Field

[0001] This invention relates to the technical field of prefabricated buildings, and in particular to a prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes and its assembly method. Background Technology

[0002] In prefabricated buildings, prefabricated exterior wall panels, as non-load-bearing enclosure structures, have their connection nodes' reliability and installation accuracy directly affecting construction efficiency and building quality.

[0003] The existing Chinese utility model patent with application number 202020670038.0 discloses a wall panel connecting component and a wall panel. Installation structure. The wall panel connection assembly includes a support connection node, which includes: a support base, the side of which has a first mounting position, and the support base is connected to the main structure to transmit load to the main structure; a load-bearing component, located on the upper part of the support base, which supports the wall panel; and a first anchoring component, including a first connecting end and a first anchoring end, the first anchoring end being anchored to the back of the wall panel, and the first connecting end being located at the first mounting position and having a clearance fit with the first mounting position. In this embodiment, the support connection node has a reliable structure for stress distribution and direct force transmission. Under strong vibration, the main structure has the freedom to deform, improving the stress performance of the externally mounted wall panel. The support connection node is not affected by the deformation of the main structure, and can effectively release the load pressure at the node when the wall panel translates relative to the main structure.

[0004] The existing Chinese utility model patent with application number 202021613511.8 discloses a three-dimensional adjustable dry connection node for prefabricated wall panels, used to connect a first prefabricated wall panel, a second prefabricated wall panel, and a support beam. A lower connection component is installed between the bottom end of the first prefabricated wall panel and the top end of the support beam, a support component is installed between the bottom end of the first prefabricated wall panel and the top end of the support beam, and an upper connection component is installed between the top end of the second prefabricated wall panel and the top end of the support beam. This connection node is three-dimensionally adjustable, has good tolerance, and is easy to install. The deformation of the wall panel and the connection node is coordinated with the deformation of the main structure. It improves the applicability of the external wall panel system, is earthquake-resistant, safe and reliable, fireproof, durable and beautiful; it is easy to install, lightweight, and cost-effective.

[0005] Although the above-mentioned node installations can achieve three-dimensional adjustment of the wall panel and ensure the installation accuracy of the wall panel, their connection nodes cannot adapt to large deformations of the main structure. Summary of the Invention

[0006] To address the above problems, the present invention provides a prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes and an assembly method thereof.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes, comprising a wall panel and a lower connection node and an upper connection node for connecting the wall panel to a structure. The lower connection node includes the connector, the lower node bolts connecting the wall panel and the connector, and the fastening bolts connecting the structure and the connector; The upper connection node includes a connecting plate and a rocker component. The connecting plate is connected to the structure by fastening bolts. The rocker component is located between the wall panel and the connecting plate and is connected to the connecting plate by connecting bolts. The rocker component has a second elongated hole, and a steel sleeve is provided in the second elongated hole. The length of the steel sleeve is greater than the thickness of the rocker component. The wall panel is connected to the rocker component by upper node bolts. The upper node bolts pass through the steel sleeve and are fastened by first nuts located on both sides of the steel sleeve.

[0008] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Furthermore, the connection plate is provided with a first elongated hole with its long axis arranged in the horizontal direction, and the fastening bolt is located at the first elongated hole.

[0009] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Furthermore, the side of the connection plate is provided with a threaded hole, and the connection bolt is screwed into the threaded hole to connect the connection plate to the rocker component.

[0010] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Furthermore, a rotating sleeve is fixed on the top surface of the swing member, and the connecting bolt passes through the rotating sleeve and connects to the connecting plate.

[0011] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Furthermore, the upper node bolt passes through the wall panel and is fastened by a second nut.

[0012] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Furthermore, the connector has a third elongated hole with its long axis arranged horizontally at the lower node bolt installation position, and a fourth elongated hole with its long axis arranged along the wall panel's in-and-out adjustment direction at the fastening bolt installation position.

[0013] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Furthermore, the connector is provided with an adjusting bolt, which passes through the connector and is supported on the structure for fine-tuning the installation height and flatness of the connector.

[0014] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Further, two upper connection nodes and two lower connection nodes are provided, located near the corner of the wall panel. A steel sleeve is fitted on the lower node bolt of one of the lower connection nodes. The steel sleeve is located in the third elongated hole through which the lower node bolt passes, and the length of the steel sleeve is greater than the thickness of the connector. The lower node bolt is fastened to the connector by third nuts located on both sides of the steel sleeve.

[0015] The present invention provides a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node. Further, the wall panel includes a light steel frame, a panel on one side of the light steel frame, a wire mesh on the other side of the light steel frame, and lightweight concrete filled in the light steel frame. On the side of the light steel frame without the panel, an alkali-resistant mesh cloth and a polymer crack-resistant mortar protective layer are provided on the outside of the wire mesh.

[0016] The present invention discloses a method for assembling prefabricated lightweight exterior wall panels with three-dimensional adjustable dry connection nodes, comprising the following steps: S1: After the wall panel is transported to the construction site, the lower node bolts and upper node bolts are fixedly installed on the wall panel respectively; S2: Initially fix the connecting plate and connecting parts to the structure using fastening bolts; S3: After the wall panel is hoisted into place and temporarily fixed, a steel sleeve is fitted on the upper node bolt and initially fixed to the swing component through the first nut. The swing component is connected to the connecting plate through the connecting bolt. The lower node bolt is fixed to the connecting component through the third nut. S4: When there is an error between the wall panel and the structure outside the plane or when the verticality of the wall panel needs to be calibrated, first adjust the length of the connector extending out of the plane for coarse adjustment, and then fine adjust by screwing in and out the first nut on the upper node bolt and the third nut on the lower node bolt, thereby adjusting the out-of-plane installation error. S5: When there is an error in the wall panel within the plane, the position of the wall panel is adjusted through the third elongated hole on the connector, and the height of the wall panel is adjusted by rotating the adjusting bolt; at the same time, the first elongated hole is provided on the connector and the second elongated hole is provided on the swing component to accommodate the adjustment of the wall panel; S6: After the wall panel is adjusted in three dimensions, tighten the first nut and the third nut respectively to fix it.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The upper and lower connecting nodes of this application enable three-dimensional adjustment in case of deviations during the manufacturing and construction stages. They also possess adaptive deformation adjustment capabilities during stress processes. Particularly during large deformations of the main structure, the swinging mechanism adapts to these deformations, preventing wall panel damage and thus improving the seismic performance of the external wall panel nodes. Furthermore, the fully dry assembly process makes node installation and maintenance more convenient, effectively improving installation efficiency and reducing construction costs.

[0018] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation structure of the present invention; Figure 2 This is a schematic diagram of the wall panel structure of the present invention; Figure 3 This is a schematic diagram of the connection node structure of the present invention; Figure 4 This is an exploded view of the connection between the rocker component and the upper node bolt of the present invention; Figure 5 This is a schematic diagram of the swinging structure of the rocking component of the present invention. Figure 6 This is a schematic diagram of the opening in the connecting plate of the present invention; Figure 7 This is a schematic diagram of the connection node structure under the present invention; Figure 8 This is a schematic diagram of the connection between the connecting node and the wall panel in this invention; Figure 9 This is an exploded view of the connecting nodes in this invention.

[0020] Figure label: 1. Wall panel; 1.1 Light steel frame; 1.2 Panel; 1.3 Wire mesh; 1.4 Lightweight concrete; 1.5 Alkali-resistant mesh; 1.6 Polymer crack-resistant mortar protective layer; 2. Upper connection node; 2.1 Connecting plate; 2.2 Swinging component; 2.3 Fastening bolt; 2.4 First elongated hole; 2.5 Connecting bolt; 2.6 Steel sleeve; 2.7 Upper node bolt; 2.8 First nut; 2.9 Rotating sleeve; 2.10 Second elongated hole; 2.11 Second nut; 3. Lower connection node; 3.1 Connecting component; 3.2 Lower node bolt; 3.3 Adjusting bolt; 3.4 Third elongated hole; 3.5 Fourth elongated hole; 3.6 Third nut; 4. Structure. Detailed Implementation

[0021] like Figures 1-9As shown, this invention discloses a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node and an assembly method thereof. The exterior wall panel 1 includes a wall panel 1, an upper connection node 2 installed on the upper part of the wall panel 1, and a lower connection node 3 installed on the lower part of the wall panel 1. The upper connection node 2 and the lower connection node 3 connect the wall panel 1 to the structure 4. This application takes the structure 4 as an I-beam as an example for illustration.

[0022] The wall panel 1 includes a light steel frame 1.1, a panel 1.2 on one side of the light steel frame 1.1, a wire mesh 1.3 on the other side of the light steel frame 1.1, and lightweight concrete 1.4 filled within the light steel frame 1.1. On the side of the light steel frame 1.1 without the panel 1.2, an alkali-resistant mesh 1.5 and a polymer crack-resistant mortar layer 1.6 are installed outside the wire mesh 1.3. The light steel frame 1.1 uses cold-formed thin-walled galvanized light steel as the load-bearing frame, including vertical C-shaped keels and horizontal U-shaped keels, which are connected by rivets or self-tapping screws to form an integral frame. The panel 1.2 is a calcium silicate panel 1.2 fixed to one side of the frame and also serves as the bottom formwork for pouring the lightweight concrete 1.4. The wall panel 1 is tightly connected to the light steel frame 1.1 with self-tapping screws; the wire mesh 1.3 is connected to the keel flange with self-tapping screws to enhance the impact resistance of the wall; the lightweight concrete 1.4 is made of polystyrene particles or other lightweight inorganic materials and is filled into the cavity inside the frame to form a lightweight fireproof enclosure structure 4; the alkali-resistant mesh cloth 1.5 and the polymer crack-resistant mortar protective layer 1.6 are used to improve crack resistance and waterproof performance. The wall panel 1 has a sleeve reserved for connection with the upper connection node 2 or the lower connection node 3. The wall panel 1 realizes the integration of enclosure, fireproof and sound insulation functions, while meeting the requirements of standardized factory production and rapid on-site assembly.

[0023] In this embodiment, two upper connecting nodes 2 and two lower connecting nodes 3 are respectively provided, one near the side of the wall panel 1. The upper connecting node 2 and the lower connecting node 3 adopt a swing-type flexible structure. The upper connecting node 2 includes a connecting plate 2.1 and a swing member 2.2. The connecting plate 2.1 is connected to the flange or horizontal part of the structure 4 by a pair of fastening bolts 2.3. The connecting plate 2.1 is provided with a first elongated hole 2.4 with its long axis arranged in the horizontal direction. The fastening bolts 2.3 pass through the first elongated hole 2.4 and are connected to the structure 4. The first elongated hole 2.4 is provided to adjust the installation position of the wall panel 1 left and right to ensure the installation accuracy of the wall panel 1. The swaying component 2.2 is located between the wall panel 1 and the connecting plate 2.1 and is connected to the connecting plate 2.1 by the connecting bolt 2.5. The swaying component 2.2 is provided with a second elongated hole 2.10 with its long axis along its length. A steel sleeve 2.6 is provided inside the second elongated hole 2.10. The length of the steel sleeve 2.6 is greater than the thickness of the swaying component 2.2. The wall panel 1 is connected to the swaying component 2.2 by the upper node bolt 2.7. The upper node bolt 2.7 passes through the steel sleeve 2.6 and is fastened by the first nuts 2.8 on both sides of the steel sleeve 2.6. By setting the swaying component 2.2 and providing the second elongated hole 2.10 and the steel sleeve 2.6 on the swaying component 2.2, when the structure 4 undergoes large deformation, the swaying component 2.2 can swing with the movement of the structure 4 under the cooperation of the second elongated hole 2.10 and the upper node bolt 2.7. This allows the structure 4 to move while the wall panel 1 remains basically stationary. This process ensures that the deformation of the main structure 4 will not transfer the load to the wall panel 1, thereby avoiding damage to the wall panel 1.

[0024] The connecting plate 2.1 has a threaded hole on its side, and the top surface of the rocker component 2.2 is fixed with a rotating sleeve 2.9. The connecting bolt 2.5 passes through the rotating sleeve 2.9 and is screwed into the threaded hole to connect the connecting plate 2.1 and the rocker component 2.2. The upper node bolt 2.7 passes through the sleeve pre-embedded on the wall plate 1 and is fastened by the second nut 2.11 to assemble the upper node bolt 2.7 with the wall plate 1.

[0025] The lower connecting node 3 includes a connector 3.1, a lower node bolt 3.2 connecting the wall panel 1 and the connector 3.1, and a fastening bolt 2.3 connecting the connecting structure 4 and the connector 3.1. In this embodiment, the connector 3.1 is an L-shaped component, but it can also be other assembly components available on the market that can adjust the installation position of the wall panel 1 in three dimensions. This application uses an L-shaped component as an example for explanation. The connector 3.1 has a third elongated hole 3.4 with its long axis arranged horizontally at the installation position of the lower node bolt 3.2 for adjusting the horizontal position of the wall panel 1. At the installation position of the fastening bolt 2.3, there is a long axis that moves in and out of the wall panel 1 for adjustment. The fourth elongated hole 3.5 in the joint direction is used to adjust the distance between the wall panel 1 and the structure 4; the connector 3.1 is also provided with adjusting bolts 3.3, which are used to adjust the flatness of the connector 3.1 and fine-tune the installation height of the wall panel 1. In this embodiment, three adjusting bolts 3.3 are used as an example. The three adjusting bolts 3.3 are arranged in a triangle to form a stable support plane, and it is easier to adjust and keep the connector 3.1 in a horizontal state. The adjusting bolts 3.3 pass through the connector 3.1 and are supported on the flange of the structure 4 for fine-tuning the installation height of the connector 3.1.

[0026] In this embodiment, a steel sleeve 2.6 is fitted onto the lower node bolt 3.2 of one of the lower connecting nodes 3. The steel sleeve 2.6 is located inside the third elongated hole 3.4 through which the lower node bolt 3.2 passes, and the length of the steel sleeve 2.6 is greater than the thickness of the connecting member 3.1. The lower node bolt 3.2 is fastened to the connecting member 3.1 by the third nuts 3.6 located on both sides of the steel sleeve 2.6. When the node is working, if the outer wall panel 1 or the main structure 4 is displaced or shifted in the plane due to load or temperature, the steel sleeve 2.6 on the third elongated hole 3.4 of one of the lower nodes allows the high-strength bolt to slide in the third elongated hole 3.4 after the third nut 3.6 of the lower node is tightened. The second elongated hole 2.10 in the swing member 2.2 of the upper node is also equipped with a steel sleeve 2.6 and can swing and rotate. This can accommodate the horizontal and vertical deformation of the wall panel 1 in the plane and prevent the wall panel 1 from being damaged.

[0027] For horizontal adjustment within the plane, when the precast wall panel 1 or the main structure 4 needs to be adjusted horizontally within the plane, the wall panel 1 can be adjusted horizontally within the plane through the third elongated hole 3.4 on the angle steel of the lower node. At the same time, the connecting plate 2.1 of the upper node has a first elongated hole 2.4 to accommodate the horizontal adjustment of the wall panel 1 within the plane, and also allows the rocker element 2.2 to be in a vertically downward state during adjustment.

[0028] Vertical adjustment within the plane: When there is an error in the vertical direction of the precast wall panel 1 within the plane and adjustment is required, rotating the adjusting bolt 3.3 on the angle steel of the lower node can make the wall panel 1 move vertically. At the same time, the second elongated hole 2.10 of the upper node swing member 2.2 can accommodate the vertical adjustment and movement of the wall panel 1.

[0029] Out-of-plane adjustment: When there is an error between the precast wall panel 1 and the main structure 4 in the out-of-plane or when it is necessary to calibrate the verticality of the outer wall panel 1, a coarse adjustment can be made by first adjusting the length of the angle steel of the lower node extending out of the plane, and then a fine adjustment can be made by screwing in and out the nuts of the high-strength bolts of the upper and lower nodes, thereby adjusting the out-of-plane installation error.

[0030] The national standard "Technical Standard for Prefabricated Concrete Buildings" stipulates that "under seismic design conditions, the connection nodes in the plane of wall panel 1 should have a deformation capacity of not less than three times the elastic inter-story drift angle of the main structure 4 under the design seismic load." This means that the exterior wall panel 1 needs to have the ability to adapt to large deformations in the plane of the main structure 4 through its node construction. When the main structure 4 deforms in the plane of wall panel 1 due to seismic load, the upper node will move accordingly. However, through the rotation of the upper node's rocker arm 2.2, the position of wall panel 1 can be kept basically stationary without affecting the load-bearing capacity of the node. This process ensures that the deformation of the main structure 4 will not transfer the load to wall panel 1, thereby preventing damage to wall panel 1.

[0031] To accommodate the deformation of structure 4 under various loads, when the nodes are in operation and the external wall panel 1 or the main structure 4 experiences displacement and misalignment in the plane due to loads or temperature effects, a steel sleeve 2.6 is provided in the third elongated hole 3.4 on the angle steel of one of the lower nodes. This allows the high-strength bolt to slide in the third elongated hole 3.4 after the third nut 3.6 of the lower node is tightened. Similarly, a steel sleeve 2.6 is provided in the second elongated hole 2.10 of the rocker component 2.2 of the upper node, allowing it to rock and rotate. This accommodates the self-deformation of wall panel 1 in the horizontal and vertical directions in the plane, preventing damage to wall panel 1.

[0032] The assembly method includes the following steps: S1: After the wall panel 1 is transported to the construction site, the lower node bolt 3.2 and the upper node bolt 2.7 are passed through the sleeves embedded in the wall panel 1 and tightened with the second nut 2.11.

[0033] S2: The connecting plate 2.1 and the connecting piece 3.1 are initially fixed to the flange of the structure 4 by fastening bolts 2.3. The connecting plate 2.1 of the upper node is initially fixed to the lower flange of the I-beam by fastening bolts 2.3, and the angle steel of the lower node is initially fixed to the upper flange of the I-beam by fastening bolts 2.3.

[0034] S3: After the wall panel 1 is hoisted into place and temporarily fixed, a steel sleeve 2.6 is fitted onto the upper node bolt 2.7 and initially fixed to the rocker component 2.2 through the first nut 2.8. The rocker component 2.2 is connected to the connecting plate 2.1 through the connecting bolt 2.5. The lower node bolt 3.2 is initially fixed to the connecting component 3.1 through the third nut 3.6.

[0035] S4: When there is an error between wall panel 1 and structure 4 outside the plane or when the verticality of wall panel 1 needs to be calibrated, first adjust the length of connector 3.1 extending outside the plane for coarse adjustment, and then fine adjust by screwing in and out the first nut 2.8 and the third nut 3.6 on the upper node bolt 2.7 and the lower node bolt 3.2, thereby adjusting the installation error outside the plane.

[0036] S5: When there is an error in the plane of the wall panel 1, the position of the wall panel 1 is adjusted by the third elongated hole 3.4 provided on the connector 3.1, and the height of the wall panel 1 is adjusted by rotating the adjusting bolt 3.3; at the same time, the first elongated hole 2.4 is provided on the connecting plate 2.1, and the second elongated hole 2.10 is provided on the swinging part 2.2 to accommodate the adjustment of the wall panel 1.

[0037] S6: After the three-dimensional adjustment of wall panel 1, tighten and fix the first nut 2.8 and the third nut 3.6, and then carry out the subsequent panel seam treatment work.

[0038] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes, comprising a wall panel (1), characterized in that, It also includes a lower connecting node (3) and an upper connecting node (2) for connecting the wall panel (1) to the structure (4); The lower connection node (3) includes a connector (3.1), a lower node bolt (3.2) connecting the wall panel (1) and the connector (3.1), and a fastening bolt (2.3) connecting the connection structure (4) and the connector (3.1); The upper connecting node (2) includes a connecting plate (2.1) and a rocker (2.2). The connecting plate (2.1) is connected to the structure (4) by fastening bolts (2.3). The rocker (2.2) is located between the wall panel (1) and the connecting plate (2.1) and is connected to the connecting plate (2.1) by connecting bolts (2.5). The rocker (2.2) is provided with a second elongated hole (2.10). A steel sleeve (2.6) is provided in the second elongated hole (2.10). The length of the steel sleeve (2.6) is greater than the thickness of the rocker (2.2). The wall panel (1) is connected to the rocker (2.2) by an upper node bolt (2.7). The upper node bolt (2.7) passes through the steel sleeve (2.6) and is fastened by first nuts (2.8) provided on both sides of the steel sleeve (2.6).

2. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 1, characterized in that, The connecting plate (2.1) is provided with a first elongated hole (2.4) with the long shaft arranged in the horizontal direction, and the fastening bolt (2.3) is located at the first elongated hole (2.4).

3. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 1, characterized in that, The connecting plate (2.1) has a threaded hole on its side, and the connecting bolt (2.5) is screwed into the threaded hole to connect the connecting plate (2.1) and the rocker (2.2).

4. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 1, characterized in that, The top surface of the rocker (2.2) is fixed with a rotating sleeve (2.9), and the connecting bolt (2.5) passes through the rotating sleeve (2.9) and is connected to the connecting plate (2.1).

5. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 1, characterized in that, The upper node bolt (2.7) passes through the wall panel (1) and is fastened by the second nut (2.11).

6. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 1, characterized in that, The connector (3.1) has a third elongated hole (3.4) with its long axis set horizontally at the installation position of the lower node bolt (3.2), and a fourth elongated hole (3.5) with its long axis set along the adjustment direction of the wall panel (1) at the installation position of the fastening bolt (2.3).

7. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 6, characterized in that, The connector (3.1) is also provided with an adjusting bolt (3.3), which passes through the connector (3.1) and is supported on the structure (4) for fine-tuning the installation height and flatness of the connector (3.1).

8. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 7, characterized in that, Two upper connecting nodes (2) and two lower connecting nodes (3) are provided, one of which is located near the wall panel (1). A steel sleeve (2.6) is fitted on the lower node bolt (3.2) of one of the lower connecting nodes (3). The steel sleeve (2.6) is located in the third elongated hole (3.4) through which the lower node bolt (3.2) passes, and the length of the steel sleeve (2.6) is greater than the thickness of the connector (3.1). The lower node bolt (3.2) is fastened to the connector (3.1) by the third nuts (3.6) located on both sides of the steel sleeve (2.6).

9. The prefabricated lightweight exterior wall panel with three-dimensional adjustable dry connection nodes according to claim 1, characterized in that, The wall panel (1) includes a light steel frame (1.1), a panel (1.2) on one side of the light steel frame (1.1), a wire mesh (1.3) on the other side of the light steel frame (1.1), and lightweight concrete (1.4) filled in the light steel frame (1.1). On the side of the light steel frame (1.1) without the panel (1.2), an alkali-resistant mesh cloth (1.5) and a polymer crack-resistant mortar protective layer (1.6) are provided on the outside of the wire mesh (1.3).

10. A method for assembling a prefabricated lightweight exterior wall panel with a three-dimensional adjustable dry connection node as described in claim 7 or 8, characterized in that, Includes the following steps: S1: After the wall panel (1) is transported to the construction site, the lower node bolt (3.2) and the upper node bolt (2.7) are fixedly installed on the wall panel (1) respectively; S2: The connecting plate (2.1) and the connecting piece (3.1) are initially fixed to the structure (4) by tightening the bolts (2.3); S3: After the wall panel (1) is hoisted into place and temporarily fixed, a steel sleeve (2.6) is fitted onto the upper node bolt (2.7) and initially fixed to the swing member (2.2) through the first nut (2.8). The swing member (2.2) is connected to the connecting plate (2.1) through the connecting bolt (2.5). The lower node bolt (3.2) is fixed to the connecting member (3.1) through the third nut (3.6). S4: When there is an error between the wall panel (1) and the structure (4) outside the plane or when the verticality of the wall panel (1) needs to be calibrated, first adjust the length of the connector (3.1) extending out of the plane for coarse adjustment, and then make fine adjustments by screwing in and out the first nut (2.8) on the upper node bolt (2.7) and the third nut (3.6) on the lower node bolt (3.2), thereby adjusting the installation error outside the plane; S5: When there is an error in the plane of the wall panel (1), the position of the wall panel (1) is adjusted by the third elongated hole (3.4) provided on the connector (3.1), and the height of the wall panel (1) is adjusted by rotating the adjusting bolt (3.3); at the same time, the first elongated hole (2.4) is provided on the connecting plate (2.1), and the second elongated hole (2.10) is provided on the swinging part (2.2) to accommodate the adjustment of the wall panel (1); S6: After the wall panel (1) is adjusted in three dimensions, tighten the first nut (2.8) and the third nut (3.6) respectively.

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