Precast concrete external wall panel and hoisting method thereof

Abstract

The invention discloses a prefabricated concrete external wall panel and a hoisting method thereof, and belongs to the technical field of concrete external wall panels, the prefabricated concrete external wall panel comprises a wall body, the surface of one end of the wall body is fixedly connected with a heat preservation plate, a plurality of grouting holes are formed in the bottom of the surface of the end, away from the heat preservation plate, of the wall body, and a frame structure is installed in the wall body; an inner adapting part is installed in the frame structure in a penetrating and inserting mode and used for enabling a wall to adapt to different working environments and meanwhile facilitating demolding, a hoisting opening is formed in the output end of the inner adapting part and used for conveniently hoisting the wall, the hoisting opening comprises a connecting body, and through holes are formed in the top and the bottom of the connecting body. By designing the adapting part and adopting a special channel structure, not only can the quick demolding of the prefabricated concrete external wall panel be realized, but also the external wall panel can be applied to different scenes, and meanwhile, the external wall panel can be used for selecting wiring and the like along with the scenes, so that the applicability of the prefabricated external wall panel is obviously improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete exterior wall panels, and particularly relates to a precast concrete exterior wall panel and a hoisting method thereof. Background Art

[0002] As an important component in modern construction projects, precast concrete exterior wall panels are widely used in various types of buildings such as high-rise residential buildings, commercial buildings, and industrial factories. It is prefabricated in a factory and, after reaching the design strength, is transported to the construction site for installation by a special hoisting device. Compared with traditional in-situ cast walls, precast concrete exterior wall panels have the advantages of short construction period, controllable quality, and the construction environment not being affected by weather. Precast concrete exterior wall panels are usually composed of materials such as cement, sand, gravel, and steel bars, and are produced using advanced automated equipment and processes to ensure accurate dimensions and stable quality of the panels. Through the prefabrication process, the construction efficiency can be greatly improved, the labor cost and material waste in on-site construction can be reduced, and at the same time, the exterior wall construction of large-scale buildings can be completed in a shorter time.

[0003] With the acceleration of the urbanization process, the construction industry has put forward higher requirements for construction efficiency, quality, and sustainability. Precast concrete exterior wall panels are widely used in the construction industry. Existing precast concrete exterior wall panels usually use reserved ring-shaped steel nails as lifting parts, resulting in the need to cut the exterior wall panels after installation, and thus additional time is required during installation. At the same time, precast concrete exterior wall panels are usually a whole piece, with the same effect in different application environments, unable to meet the influence of external climate change and the surrounding environment, so the use performance of precast concrete exterior wall panels is relatively low. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a precast concrete exterior wall panel and a hoisting method thereof.

[0005] The technical solution adopted to solve the above technical problem is: a precast concrete exterior wall panel, including a wall body, one end surface of the wall body is fixedly connected with a heat preservation board, and a plurality of grouting holes are opened at the bottom of the surface of the wall body away from the heat preservation board;

[0006] A frame structure is installed inside the wall body, and an internal adaptation part is inserted and installed inside the frame structure for the wall body to adapt to different working environments and facilitate demolding. The output end of the internal adaptation part is provided with a hoisting opening for convenient hoisting of the wall body;

[0007] The hoisting opening includes a connecting body, and through holes are opened at both the top and bottom of the connecting body.

[0008] Furthermore, the frame structure includes a plurality of first inner-layer steel bars fixedly connected to the interior of the wall. At the cross-shaped parts of the plurality of first inner-layer steel bars, second inner-layer steel bars are installed, and at the connection parts of the plurality of first inner-layer steel bars and the corresponding second inner-layer steel bars, first welding nodes are welded. At the obliquely fixed connection of the plurality of first welding nodes with the first inner-layer steel bars and the second inner-layer steel bars as the symmetry center, a plurality of diagonal steel bars are fixedly connected. At the other ends of the plurality of diagonal steel bars far away from the first welding nodes, outer steel bars are installed. At the connection points of every four outer steel bars in a rectangular shape, second welding nodes are welded.

[0009] Through the above technical solution, when in use, when prefabricating the exterior wall panel, first, it is necessary to build the exterior wall panel frame. The purpose is to support it and enhance its firmness. At this time, using the frame structure to build a three-dimensional structure can effectively disperse the load, enhance the overall strength and seismic performance of the wall panel, and have enough space inside. Through the hollow design or lightweight materials, the weight of the wall panel can be reduced, and the burden on the building structure can be reduced. In addition, the three-dimensional structure provides more air compartments, enhancing the heat insulation and sound insulation effects of the wall panel. Specifically, a plurality of first inner-layer steel bars and second inner-layer steel bars are used to build the internal support frame and welded into the first welding nodes. Subsequently, with the middle layer as the stacking center and the plurality of first welding nodes as the welding center, diagonal steel bars are welded obliquely outwards to the outer layer. At the same time, the outer steel bars are connected by welding at the second welding nodes. The three-dimensional frame formed by welding the plurality of diagonal steel bars and the outer steel bars to each other enhances the seismic performance. At the same time, through the internal space, supports can be arranged, facilitating subsequent multi-scenario adaptation work.

[0010] Furthermore, the inner adaptation part is the first adaptation part. The first adaptation part includes a first steel pipe inserted through a plurality of first inner-layer steel bars, second inner-layer steel bars, and outer steel bars. And at the outer wall of the first steel pipe, a first connection node is installed. Horizontally at the first connection node, a second steel pipe is installed. At the connection parts of the first steel pipe and the second steel pipe with the side surface of the wall, first pipe openings are provided. And at the front surface of the wall, first support openings are installed on the first steel pipe and the second steel pipe. The first steel pipe and the second steel pipe are in a straight-tube cross shape. The inner wall of the first support opening located on the wall surface is fixedly connected to the bottom through-hole.

[0011] Through the above technical solution, after the framework structure is built, the first adaptation part is arranged in a cross shape at this time, enhancing the overall stability of the exterior wall panel. At the same time, it can achieve rapid demoulding after the grouting solidifies according to the direction. In addition, the embedded guiding pulleys enable rapid threading of pipelines, doubling the construction efficiency. Meanwhile, the cross path forms a natural stiffener, increasing the in-plane shear strength by 12%. In terms of application, it can be applied to the hospital exterior wall panel project to meet the requirement of zero leakage of medical gas pipelines. Specifically, the first steel pipe and the second steel pipe are connected through the first connection node, and multiple first branch ports are arranged on the pipe wall and connected to the corresponding through holes, facilitating random selection for hoisting during installation. And multiple first pipe orifices and multiple first branch ports are arranged on the four faces of the wall, achieving rapid demoulding after the grouting solidifies.

[0012] Further, the inner adaptation part is the second adaptation part. The second adaptation part includes a third steel pipe inserted through multiple first inner layer steel bars, second inner layer steel bars, and outer layer steel bars. Second pipe orifices are opened on both the upper and lower contact surfaces of the third steel pipe with the wall. Second branch ports are installed on the wall surface at the troughs of the third steel pipe, and third branch ports are installed on the side surfaces of the wall at the crests of the third steel pipe. The third steel pipe is in a wave-nested form, and the inner wall of the second branch port located on the wall surface is fixedly connected to the bottom through hole.

[0013] Through the above technical solution, after the framework structure is built, the second adaptation part is introduced into the wall in a wave-nested form at this time. The corrugated surface increases the bonding strength between the concrete steel structure interface by 22%. At the same time, the undulating waves disperse the temperature stress, reducing the crack incidence rate by 65%. Also, the sound propagation time is longer, and it can be applied to residential projects along urban expressways, significantly reducing traffic noise. Specifically, two third steel pipes are fixed in the framework structure in a bent wave form, and at the same time, their troughs and crests are respectively used with the second pipe orifices and second branch ports to penetrate the four faces of the wall, thereby achieving rapid demoulding and rapid hoisting.

[0014] Further, the inner adaptation part is the third adaptation part. The third adaptation part includes a fourth steel pipe inserted through multiple first inner layer steel bars, second inner layer steel bars, and outer layer steel bars. A second connection node is installed at the output end of the fourth steel pipe. Four steel branch pipes are obliquely and fixedly connected to the second connection node. Fourth branch ports are opened at the output ends of two of the steel branch pipes. Through the output ends of the steel branch pipes, additional steel branch pipes are installed, and third pipe orifices are opened on both the side surface and the surface of the wall. Multiple fourth steel pipes connected through multiple second connection nodes are in a tree-like bifurcated form, and the inner wall of the fourth branch port located on the wall surface is fixedly connected to the bottom through hole.

[0015] Through the above technical solution, after the framework structure is built, at this time, the third adaptation part penetrates through the wall in a tree-like bifurcated manner. The bifurcated structure blocks the crack expansion, the impact toughness is increased by 40%, and the fractal layout reduces the amount of concrete used. It can be applied to the high-speed railway station complex and integrate various types of equipment pipelines. Specifically, the fourth steel pipe is connected through the second connection node for branching and is connected to the steel branch pipe at the same time. And two of the steel branch pipes are connected to the wall surface for hoisting and demolding. Connect in this way and so on until the third pipe orifice communicates with the side and top and bottom of the wall.

[0016] Furthermore, the inner wall of the connector is provided with a first thread groove and a second thread groove, and the pitch of the first thread groove is shorter and the thread groove is shallower than that of the second thread groove.

[0017] Through the above technical solution, during use, after the precast concrete exterior wall panel is solidified, at this time, it is connected to the external part through the hoisting port, so that the exterior wall panel can be quickly installed during use. At the same time, according to the randomness of the hoisting port, it can be selected according to the installation scenario, which is convenient for hoisting. Specifically, the external part is screwed into the through hole, and then passes through the first thread groove and the second thread groove until it is tightened. The hoisting machine is connected to the external part. It should be noted that the thread pitch of the first thread groove is denser than that of the second thread groove, and the depth of the thread groove of the first thread groove is shallower than that of the second thread groove. At the same time, the inner wall is in a ladder shape to enhance the stability.

[0018] A hoisting method for a precast concrete exterior wall panel includes the following specific steps:

[0019] Step 1: Use a three-dimensional solid framework formed by connecting multiple first inner layer steel bars, second inner layer steel bars, diagonal steel bars and outer layer steel bars through welding at the first welding node and the second welding node;

[0020] Step 3: It is formulated according to different application requirements. The first adaptation part, the second adaptation part and the third adaptation part are built with the framework structure, and their output ends are welded to the connector. The model is built with the support plate, and then perfusion and condensation are carried out;

[0021] Step 3: After the precast concrete exterior wall panel is completed, the external part is screwed into the through hole, and then passes through the first thread groove and the second thread groove until it is tightened. The hoisting machine is connected to the external part, so that the precast concrete exterior wall panel can be quickly installed.

[0022] The beneficial effects of the present invention are as follows: (1) By designing the adaptation part and adopting a special channel structure, the present invention can not only achieve the rapid demolding of precast concrete exterior wall panels, but also enable the exterior wall panels to be applied to different scenarios, and at the same time can follow the scenario to select wiring and other uses, thus significantly improving the applicability of the precast exterior wall panels; (2) By designing the frame structure, during the process of precast concrete exterior wall panels, a three-dimensional frame composed of triangles and rectangles is used, making the exterior wall panels more stable and having better seismic resistance, and can cooperate with the stable adaptation part to facilitate pipe laying, greatly improving the quality of the exterior wall panels; (3) By designing the lifting opening, it is assembled with an external lifting member. By adopting a special thread pitch and thread depth, the lifting stability is increased. At the same time, the detachable lifting member is convenient for processing, and the lifting opening can be connected to the channel to facilitate demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a schematic structural diagram of Embodiment 1 of the present invention;

[0025] Figure 3 is a front view of the present invention;

[0026] Figure 4 is an exploded view of Embodiment 1 of the present invention;

[0027] Figure 5 is a schematic internal structural diagram of Embodiment 1 of the present invention;

[0028] Figure 6 is a schematic structural diagram of Embodiment 2 of the present invention;

[0029] Figure 7 is a schematic internal structural diagram of Embodiment 2 of the present invention;

[0030] Figure 8 is a schematic structural diagram of Embodiment 3 of the present invention;

[0031] Figure 9 is a schematic internal structural diagram of Embodiment 3 of the present invention;

[0032] Figure 10 is a schematic structural diagram of the lifting opening of the present invention;

[0033] Figure 11 is a cross-sectional view of the lifting opening of the present invention.

[0034] Reference numerals: 11, wall; 12, insulation board; 13, grouting hole; 2, frame structure; 21, first inner layer of steel bars; 22, second inner layer of steel bars; 23, first welding joint; 24, diagonal steel bars; 25, second welding joint; 26, outer layer of steel bars; 3, inner adaptation part; 31, first adaptation part; 311, first steel pipe; 312, first connection joint; 313, second steel pipe; 314, first pipe orifice; 315, first branch orifice; 32, second adaptation part; 321, third steel pipe; 322, second pipe orifice; 323, second branch orifice; 324, third branch orifice; 33, third adaptation part; 331, fourth steel pipe; 332, second connection joint; 333, fourth branch orifice; 334, steel branch pipe; 335, third pipe orifice; 4, lifting port; 41, connecting body; 42, through hole; 43, first thread groove; 44, second thread groove. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Embodiment 1:

[0037] As Figures 1-11As shown in the figure, a precast concrete exterior wall panel of this embodiment includes a wall body 11. One end surface of the wall body 11 is fixedly connected with a heat preservation board 12. A plurality of grouting holes 13 are formed at the bottom of the surface of the wall body 11 away from the heat preservation board 12. A frame structure 2 is installed inside the wall body 11. The frame structure 2 includes a plurality of first inner-layer steel bars 21 fixedly connected inside the wall body 11. A second inner-layer steel bar 22 is installed at the cross-shaped part of the plurality of first inner-layer steel bars 21. And a first welding node 23 is welded at the connection part of the plurality of first inner-layer steel bars 21 and the corresponding second inner-layer steel bar 22. A plurality of diagonal steel bars 24 are fixedly connected obliquely with the plurality of first welding nodes 23 as the symmetry center of the first inner-layer steel bars 21 and the second inner-layer steel bars 22. The other ends of the plurality of diagonal steel bars 24 away from the first welding nodes 23 are all installed with outer-layer steel bars 26. A second welding node 25 is welded at the connection point of every four outer-layer steel bars 26 in a rectangular shape. When in use, when prefabricating the exterior wall panel, first, it is necessary to build the exterior wall panel frame, the purpose of which is to support it and enhance its firmness at the same time. At this time, using the frame structure 2 to build a three-dimensional structure can effectively disperse the load, enhance the overall strength and seismic performance of the wall panel, and there is enough space inside it. Through hollow design or lightweight materials, the weight of the wall panel can be reduced, and the burden on the building structure can be lowered. In addition, the three-dimensional structure provides more air insulation layers, enhancing the heat preservation and sound insulation effects of the wall panel. Specifically, use a plurality of first inner-layer steel bars 21 and second inner-layer steel bars 22 to build the internal support frame and weld them into the first welding nodes 23. Then, with the middle layer as the stacking center and the plurality of first welding nodes 23 as the welding center, weld the diagonal steel bars 24 obliquely outwards. At the same time, connect the outer-layer steel bars 26 by welding with the second welding nodes 25. A three-dimensional frame formed by welding the plurality of diagonal steel bars 24 and the outer-layer steel bars 26 to each other is used to enhance the seismic performance. At the same time, through the internal space, supports can be arranged, facilitating subsequent multi-scenario adaptation work.

[0038] As Figures 2-5As shown in the figure, an inner adaptation part 3 is installed inside the frame structure 2 for the wall body 11 to adapt to different working environments and facilitate demoulding. The inner adaptation part 3 is a first adaptation part 31. The first adaptation part 31 includes a first steel pipe 311 inserted through a plurality of first inner layer steel bars 21, second inner layer steel bars 22 and outer layer steel bars 26. And a first connection node 312 is installed on the outer wall of the first steel pipe 311. A second steel pipe 313 is installed horizontally at the first connection node 312. First pipe openings 314 are provided at the connection positions of the first steel pipe 311 and the second steel pipe 313 with the side surface of the wall body 11. And first branch openings 315 are installed on the first steel pipe 311 and the second steel pipe 313 with the front surface of the wall body 11. The first steel pipe 311 and the second steel pipe 313 are in a straight tube cross shape. The inner wall of the first branch opening 315 on the surface of the wall body 11 is fixedly connected to the bottom through hole 42. After the frame structure 2 is built, at this time, the first adaptation part 31 is arranged in a cross shape, which enhances the overall stability of the exterior wall panel. At the same time, it can be quickly demoulded after the grout solidifies according to the direction. In addition, embedded guide pulleys are used to quickly thread the pipeline, and the construction efficiency is increased by 3 times. At the same time, the cross path forms a natural stiffener, and the in-plane shear strength is increased by 12%. In terms of application, it can be applied to the hospital exterior wall panel project to meet the requirement of zero leakage of medical gas pipelines. Specifically, the first steel pipe 311 and the second steel pipe 313 are connected through the first connection node 312. At the same time, a plurality of first branch openings 315 are arranged on the pipe wall and connected to the corresponding through holes 42, which is convenient for random selection for hoisting during installation. And a plurality of first pipe openings 314 and a plurality of first branch openings 315 are arranged on the four surfaces of the wall body 11 to achieve quick demoulding after the grout solidifies.

[0039] As Figures 10-11 shown, a lifting port 4 is installed at the output end of the inner adaptation part 3 for convenient hoisting of the wall body 11. The lifting port 4 includes a connecting body 41. Through holes 42 are opened at the top and bottom of the connecting body 41. First thread grooves 43 and second thread grooves 44 are opened on the inner wall of the connecting body 41. And the pitch of the first thread groove 43 is shorter and the thread groove is shallower than that of the second thread groove 44. When in use, after the precast concrete exterior wall panel solidifies, at this time, the lifting port 4 is connected to an external part, so that the exterior wall panel can be quickly installed during use. At the same time, according to the randomness of the lifting port 4, it can be selected according to the installation scenario for convenient hoisting. Specifically, the external part is screwed into the through hole 42 and then passes through the first thread groove 43 and the second thread groove 44 until it is tightened. The hoisting machine is connected to the external part. It should be noted that the thread pitch of the first thread groove 43 is denser than that of the second thread groove 44. At the same time, the depth of the thread groove of the first thread groove 43 is shallower than that of the second thread groove 44, and the inner wall is in a ladder shape to enhance stability.

[0040] A hoisting method for a precast concrete exterior wall panel includes the following specific steps:

[0041] Step 1: A three-dimensional frame is formed by connecting a plurality of first inner layer steel bars 21, second inner layer steel bars 22, oblique steel bars 24 and outer layer steel bars 26 by welding at first welding nodes 23 and second welding nodes 25;

[0042] Step 3: According to different application requirements, the first adapting part 31, the second adapting part 32 and the third adapting part 33 are built with the frame structure 2, and the output ends thereof are welded with the connector 41, and the model is built with a support plate, and then poured and condensed;

[0043] Step 3: After the concrete exterior wall panels are prefabricated, the external parts are screwed in through the through holes 42, and then pass through the first thread groove 43 and the second thread groove 44 until they are tightened, and are connected to the external parts through a crane, so that the prefabricated concrete exterior wall panels can be quickly installed.

[0044] Embodiment 2:

[0045] like Figures 6-7 As shown, the difference between this embodiment and the first embodiment is that: the inner adaptation part 3 is a second adaptation part 32, the second adaptation part 32 includes a third steel pipe 321 inserted into a plurality of first inner steel bars 21, second inner steel bars 22 and outer steel bars 26, the third steel pipe 321 and the upper and lower contact surfaces of the wall 11 are both provided with second pipe openings 322, the third steel pipe 321 is provided with a second branch opening 323 at the trough of the wall 11, the third steel pipe 321 is provided with a third branch opening 324 at the crest of the wall 11, the third steel pipe 321 is provided with a third branch opening 323 at the side of the wall 11, the third steel pipe 321 is provided with a wave nested type, and the inner wall of the second branch opening 323 on the surface of the wall 11 and the bottom through hole 42 are connected. After the frame structure 2 is fixedly connected, the second adapting part 32 is used to transmit the wave-nested sound into the wall 11. The wave surface increases the bonding strength of the concrete-steel interface by 22%. At the same time, the wave fluctuations disperse the temperature stress, and the crack incidence rate is reduced by 65%. At the same time, the propagation time of sound is longer, which can be applied to residential projects along urban expressways. Traffic noise is significantly reduced. Specifically, two third steel pipes 321 are fixed in the frame structure 2 in a curved wave-like manner, and the second pipe opening 322 and the second branch opening 323 are used to penetrate the four surfaces of the wall 11 using the trough and the peak, respectively, so as to achieve rapid demoulding and rapid lifting.

[0046] Embodiment three:

[0047] like Figures 8-9As shown in the figure, the difference between this embodiment and the first embodiment is that the internal adaptation part 3 is the third adaptation part 33. The third adaptation part 33 includes a fourth steel pipe 331 inserted through a plurality of first inner layer steel bars 21, second inner layer steel bars 22, and outer layer steel bars 26. A second connection node 332 is installed at the output end of the fourth steel pipe 331. Four steel branch pipes 334 are obliquely and fixedly connected to the second connection node 332. Fourth branch ports 333 are provided at the output ends of two of the steel branch pipes 334. Additional steel branch pipes 334 are installed through the output ends of the steel branch pipes 334, and third pipe ports 335 are provided on both the side and the surface of the wall 11. The multiple fourth steel pipes 331 connected through a plurality of second connection nodes 332 are in a tree-like bifurcation form. The inner wall of the fourth branch port 333 on the surface of the wall 11 is fixedly connected to the bottom through hole 42. After the frame structure 2 is built, at this time, the third adaptation part 33 penetrates through the wall 11 in a tree-like bifurcation form. The bifurcation structure blocks the crack expansion, the impact toughness is increased by 40%, and the fractal layout reduces the amount of concrete used. It can be applied to the high-speed railway station complex and integrate various types of equipment pipelines. Specifically, the fourth steel pipe 331 is branched through the second connection node 332 and connected to the steel branch pipe 334 at the same time. Two of the steel branch pipes 334 are connected to the surface of the wall 11 and are used for hoisting and demolding. Connect in this way and so on until the third pipe port 335 communicates with the side and the top and bottom of the wall 11.

[0048] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A prefabricated concrete exterior wall panel, comprising a wall body (11), characterized in that: A heat preservation board (12) is fixedly connected to the surface of one end of the wall (11), and a plurality of grouting holes (13) are provided at the bottom of the surface of one end of the wall (11) away from the heat preservation board (12); A frame structure (2) is installed inside the wall (11), an internal adaptable part (3) is inserted inside the frame structure (2), and is used for the wall (11) to adapt to different working environments and facilitate demoulding, and a hoisting port (4) is installed at the output end of the internal adaptable part (3), and is used for convenient hoisting of the wall (11); The lifting port (4) comprises a connecting body (41), and through holes (42) are provided at the top and bottom of the connecting body (41).

2. The precast concrete exterior wall panel according to claim 1, characterized in that: The frame structure (2) comprises a plurality of first inner layer steel bars (21) fixedly connected to the inside of the wall (11), a second inner layer steel bar (22) being installed at a cross-shaped position of the plurality of first inner layer steel bars (21), and a first welding node (23) being welded at a connection point between the plurality of first inner layer steel bars (21) and the corresponding second inner layer steel bars (22), a plurality of the first welding nodes (23) being fixedly connected to a plurality of oblique steel bars (24) obliquely with the first inner layer steel bars (21) and the second inner layer steel bars (22) as a symmetric center, an outer layer steel bar (26) being installed at the other end of the plurality of oblique steel bars (24) away from the first welding node (23), and a second welding node (25) being welded at a rectangular connection point at every four outer layer steel bars (26).

3. The precast concrete exterior wall panel according to claim 2, characterized in that: The inner adaptable portion (3) is a first adaptable portion (31), the first adaptable portion (31) comprising a first steel pipe (311) inserted into a plurality of first inner layer steel bars (21), a second inner layer steel bars (22) and an outer layer steel bars (26), and a first connection node (312) is installed on the outer wall of the first steel pipe (311), a second steel pipe (313) is installed at the transverse part of the first connection node (312), a first pipe opening (314) is provided at the connection between the first steel pipe (311) and the second steel pipe (313) and the side surface of the wall (11), and a first branch opening (315) is installed on the front surface of the wall (11).

4. The precast concrete exterior wall panel according to claim 3, characterized in that: The first steel pipe (311) and the second steel pipe (313) are in the form of a straight cross, and the inner wall of the first branch opening (315) located on the surface of the wall (11) is fixedly connected to the bottom through hole (42).

5. The precast concrete exterior wall panel according to claim 2, characterized in that: The inner adaptable portion (3) is a second adaptable portion (32), and the second adaptable portion (32) comprises a third steel pipe (321) inserted into a plurality of first inner layer steel bars (21), a second inner layer steel bars (22) and an outer layer steel bars (26). The third steel pipe (321) is provided with a second pipe opening (322) on the upper and lower contact surfaces with the wall (11). A second branch opening (323) is installed at the trough of the third steel pipe (321) and the surface of the wall (11), and a third branch opening (324) is installed at the peak of the third steel pipe (321) and the side of the wall (11).

6. The precast concrete exterior wall panel according to claim 5, characterized in that: The third steel pipe (321) is in a wave-nested manner, and the inner wall of the second branch opening (323) located on the surface of the wall (11) is fixedly connected to the bottom through hole (42).

7. The precast concrete exterior wall panel according to claim 2, characterized in that: The inner adaptable portion (3) is a third adaptable portion (33), and the third adaptable portion (33) comprises a fourth steel pipe (331) inserted into a plurality of first inner layer steel bars (21), a second inner layer steel bars (22) and an outer layer steel bars (26); a second connection node (332) is installed at the output end of the fourth steel pipe (331); four steel branch pipes (334) are obliquely fixedly connected to the second connection node (332); two of the steel branch pipes (334) are provided with fourth branch openings (333) at the output ends; another steel branch pipe (334) is installed through the output end of the steel branch pipe (334), and third pipe openings (335) are provided on the side and surface of the wall (11).

8. The precast concrete exterior wall panel according to claim 7, characterized in that: A plurality of fourth steel pipes (331) connected by a plurality of the second connection nodes (332) are in a tree-like forked pattern, and the inner wall of the fourth branch opening (333) located on the surface of the wall (11) is fixedly connected to the bottom through hole (42).

9. The precast concrete exterior wall panel according to claim 1, characterized in that: The inner wall of the connecting body (41) is provided with a first thread groove (43) and a second thread groove (44), and the first thread groove (43) has a shorter pitch and a shallower thread groove than the second thread groove (44).

10. A method for hoisting a precast concrete exterior wall panel according to claims 1-9, comprising the following specific steps: Step 1: using a plurality of first inner layer steel bars (21), second inner layer steel bars (22), oblique steel bars (24) and outer layer steel bars (26) and connecting them by welding at first welding nodes (23) and second welding nodes (25) to form a three-dimensional frame; Step 3: According to different application requirements, the first adapting part (31), the second adapting part (32) and the third adapting part (33) are assembled with the frame structure (2), and the output ends thereof are welded with the connector (41), and the model is assembled with a support plate, followed by infusion and condensation; Step 3: After the concrete exterior wall panel is prefabricated, the external connector is screwed in through the through hole (42), and then passes through the first thread groove (43) and the second thread groove (44) until it is tightened, and connected to the external connector through a crane, so that the prefabricated concrete exterior wall panel can be quickly installed.

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