Chain shaft, prefabricated chain structure frame cavity inner wall and prefabricated chain structure frame cavity outer wall

Abstract

The utility model provides a chain shaft, prefabricated chain framework cavity inner wall and prefabricated chain framework cavity outer wall, wherein the chain shaft includes: chain shaft middle part, chain shaft middle part extends along the first direction, chain shaft end part is connected in chain shaft middle part both ends, first steel bar hole is through chain shaft end part, first steel bar hole is through chain shaft end part along the second direction, second steel bar hole is through chain shaft end part, second steel bar hole is through chain shaft end part along the third direction, and first steel bar hole and second steel bar hole staggered overlap and form through, through hole is located in chain shaft end part, through hole extends along the first direction, and first steel bar hole, second steel bar hole and through hole form through each other, and the inner wall of through hole is equipped with internal thread, utilizes chain shaft one hand can solve the water seepage problem of wallboard (inner wall and outer wall), increases the strength of steel bar hole (first steel bar hole and second steel bar hole) part, promotes the use performance of wall body, has extensive applicable range.

Description

Technical Field

[0001] This utility model relates to the field of construction, and in particular to a chain shaft, a prefabricated chain frame cavity inner wall, and a prefabricated chain frame cavity outer wall. Background Technology

[0002] In the field of modern building construction, there are still many problems to be solved regarding the construction and connection technology of interior and exterior walls. Traditional interior and exterior wall structures and connection methods have gradually revealed numerous limitations, making it difficult to meet the comprehensive requirements of modern buildings in terms of structural stability, ease of construction, functional diversity, and energy conservation and environmental protection. Regarding structural stability, traditional wall components often employ simple masonry or prefabricated splicing methods, resulting in insufficient connection strength and overall integrity. This easily leads to cracks, loosening, or even partial collapse of the walls under external impact or during long-term use, seriously affecting the safety and durability of the building. At the same time, the relatively simple shapes and sizes of traditional wall components make it difficult to adapt to complex and ever-changing architectural design needs, limiting innovation in architectural form and spatial layout.

[0003] From the perspective of ease of construction, traditional wall construction relies heavily on on-site wet work, resulting in low construction efficiency, high consumption of manpower, materials, and time, and significant susceptibility to environmental factors such as weather, which can easily lead to project delays. Furthermore, the precision of on-site construction is difficult to guarantee, further impacting the connection quality and overall performance of the wall.

[0004] Therefore, how to improve the stability of the wall panels and ensure their safety is a technical problem that urgently needs to be solved. Utility Model Content

[0005] The problem solved by this utility model is to provide a chain shaft, a prefabricated chain frame cavity inner wall, and a prefabricated chain frame cavity outer wall. The chain shaft can solve the water seepage problem of the wall panels (inner wall and outer wall), increase the strength of the steel bar holes (first steel bar hole and second steel bar hole), and reduce the damage to the wall in the event of an earthquake, thereby improving the performance of the wall and having a wide range of applications.

[0006] To solve the above problems, this utility model provides a chain shaft comprising: a chain shaft middle portion extending along a first direction; chain shaft ends connected to both ends of the chain shaft middle portion; a first reinforcing bar hole penetrating the chain shaft ends along a second direction; a second reinforcing bar hole penetrating the chain shaft ends along a third direction, the first and second reinforcing bar holes overlapping to form a through-hole, wherein the first direction is perpendicular to the second direction, the second direction is perpendicular to the third direction, and the first direction is perpendicular to the third direction; and a through-hole located within the chain shaft ends, the through-hole extending along the first direction, the first reinforcing bar hole, the second reinforcing bar hole, and the through-hole interconnecting each other, the inner wall of the through-hole being provided with an internal thread.

[0007] Optionally, the end of the chain shaft is a square column, the middle part of the chain shaft is a circular column, and the surface of the end of the chain shaft in the first direction is higher than the surface of the middle part of the chain shaft in the first direction.

[0008] Optionally, it also includes: a bolt used in conjunction with the through hole.

[0009] Accordingly, this utility model provides a prefabricated chain-frame cavity inner wall, comprising: a plurality of chain shafts as described above; a steel mesh located on both sides of the chain shafts along the first direction, the steel mesh including a first steel bar passing through the first steel bar hole along the second direction, and a second steel bar passing through the second steel bar hole along the third direction, with a hollow cavity formed between the two steel meshes; a metal back rib located outside the steel mesh and on the end surface of the chain shaft, the metal back rib extending along the second direction, the metal back rib having a connecting hole corresponding to the through hole; and a bolt passing through the connecting hole and forming a threaded connection with the through hole.

[0010] Optionally, it also includes: a cement substrate located on the surface of the metal back rib, wherein a structural adhesive is coated between the cement substrate and the surface of the metal back rib, and a concrete layer is located within the hollow cavity, wherein the cement substrate and the concrete layer exist simultaneously or only one of them exists.

[0011] This utility model provides a chain shaft, comprising: a chain shaft middle portion extending along a first direction, the chain shaft middle portion including opposing first and second ends; a first chain shaft end connected to the first end; and a second chain shaft end connected to the second end, wherein the dimension of the second chain shaft along the first direction is greater than the dimension of the first chain shaft along the first direction; both the first and second chain shaft ends are provided with first reinforcing bar holes, and each first reinforcing bar hole penetrates the corresponding chain shaft end along a second direction; both the first and second chain shaft ends are provided with second reinforcing bar holes, and each second reinforcing bar hole penetrates the corresponding chain shaft end along a third direction. The first and second reinforcing bar holes overlap and form a through connection, wherein the first direction is perpendicular to the second direction, the second direction is perpendicular to the third direction, and the first direction is perpendicular to the third direction; a limiting plate is located on the end of the second chain shaft, the limiting plate is wrapped around the outer surface of the end of the second chain shaft in a direction perpendicular to the first direction, the first and second reinforcing bar holes on the second chain shaft are located between the middle part of the chain shaft and the limiting plate; through holes are located inside the end of the first and second chain shafts, the through holes extend along the first direction, the first reinforcing bar holes, the second reinforcing bar holes and the through holes are interconnected, and the inner wall of the through holes is provided with internal threads.

[0012] Optionally, the first chain shaft end is shaped as a square column, and the second chain shaft end includes a first sub-part and a second sub-part located on both sides of the limiting plate. The first sub-part and the second sub-part are shaped as square columns, or the first sub-part is shaped as a square column and the second sub-part is shaped as a circular column. The middle part of the chain shaft is shaped as a circular column. The surface of the first chain shaft end in the first direction is higher than the surface of the middle part of the chain shaft in the first direction; the surface of the second chain shaft end in the first direction is higher than the surface of the middle part of the chain shaft in the first direction.

[0013] Optionally, it also includes a bolt, which is used in conjunction with the through hole on the end of the first chain shaft; and a connector, one end of which is used in conjunction with the through hole on the end of the second chain shaft, and the other end of which is provided with a steel bar through hole.

[0014] Accordingly, this utility model also provides a prefabricated chain-frame cavity exterior wall, comprising: a plurality of chain shafts as described above; a steel mesh located on both sides of the chain shafts along the first direction, the steel mesh including a first steel bar inserted into the first steel bar hole along the second direction, and a second steel bar inserted into the second steel bar hole along the third direction, the steel mesh having a hollow cavity between them; a metal back rib located outside the steel mesh and on the end surface of the first chain shaft, the metal back rib extending along the second direction, the metal back rib having a connecting hole corresponding to the through hole; a bolt passing through the connecting hole and forming a threaded connection with the through hole; a connector, one end of the connector engaging with the through hole on the end of the second chain shaft to form a threaded connection, the other end of the connector having a steel bar through hole; an outer layer located outside the steel mesh and on the end surface of the second chain shaft, the other end of the connector located inside the outer layer, an external connecting steel bar inserted in the steel bar through hole, the outer layer including an insulation layer and an outer leaf plate sequentially disposed on the outer side of the end surface of the second chain shaft.

[0015] Optionally, it may also include: a cement substrate located on the surface of the metal back rib, the cement substrate and the surface of the metal back rib having structural adhesive; and a concrete layer located within the hollow cavity, wherein the cement substrate and the concrete layer are present simultaneously or at least one of them is present.

[0016] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0017] In the technical solution of this utility model's chain shaft, the chain shaft includes a middle section extending along a first direction; chain shaft ends connected to both ends of the middle section; a first reinforcing bar hole penetrating the chain shaft ends along a second direction; a second reinforcing bar hole penetrating the chain shaft ends, distributed along a third direction, the first and second reinforcing bar holes overlapping to form a through-hole, wherein the first direction is perpendicular to the second direction, the second direction is perpendicular to the third direction, and the first direction is perpendicular to the third direction; a through-hole located within the chain shaft ends, extending along the first direction, the first and second reinforcing bar holes and the through-hole forming a through-hole, the inner wall of the through-hole being provided with internal threads; subsequently, bolts are connected to the through-hole, the bolts can directly press against the reinforcing bars inserted into the first and second reinforcing bar holes, thereby enhancing the strength at the first and second reinforcing bar holes. Due to the interaction force between the reinforcing bars at the first and second through-holes, in the event of an earthquake, this interaction force can reduce the misalignment between the reinforcing bars, thereby reducing damage to the wall, and has a wide range of applications.

[0018] Furthermore, the end of the chain shaft is shaped as a square column, the middle part of the chain shaft is shaped as a circular column, the middle part of the chain shaft has a first projected shape on a plane perpendicular to the first direction, and the end of the chain shaft has a second projected shape on the same plane, with the first projected shape falling within the range of the second projected shape; after forming a wall panel using the chain shaft, the problem of water seepage in the wall panel can be solved, further protecting the wall panel and improving its service life and quality. Attached Figure Description

[0019] Figures 1 to 2 This is a schematic diagram of the chain shaft in one embodiment of the present invention;

[0020] Figures 3 to 5 This is a schematic diagram of the structure of the prefabricated chain frame cavity inner wall in one embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the metal back rib in one embodiment of the present invention;

[0022] Figures 7 to 8 This is a schematic diagram of the prefabricated chain frame cavity inner wall in another embodiment of the present invention;

[0023] Figures 9 to 10 This is a schematic diagram of the prefabricated chain frame cavity inner wall in another embodiment of the present invention;

[0024] Figures 11 to 12 This is a schematic diagram of the prefabricated chain frame cavity inner wall in another embodiment of the present invention;

[0025] Figures 13 to 14 This is a schematic diagram of the chain shaft in another embodiment of the present invention;

[0026] Figures 15 to 17 This is a schematic diagram of the prefabricated chain-frame cavity outer wall in one embodiment of the present invention;

[0027] Figures 18 to 19 This is a schematic diagram of the prefabricated chain-frame cavity outer wall in another embodiment of the present invention;

[0028] Figures 20 to 21 This is a structural schematic diagram of the prefabricated chain-frame cavity outer wall in another embodiment of the present invention;

[0029] Figures 22 to 23 This is a structural schematic diagram of the prefabricated chain-frame cavity outer wall in another embodiment of the present invention. Detailed Implementation

[0030] Currently, both exterior and interior walls, due to their inherent limitations, struggle to meet the comprehensive requirements of modern architecture in terms of structural stability, ease of construction, functional diversity, and energy conservation and environmental protection.

[0031] The inventor discovered through research that An invention relates to a chain shaft, comprising a chain shaft middle section extending along a first direction; chain shaft end sections connected to both ends of the chain shaft middle section; a first reinforcing bar hole penetrating the chain shaft end section along a second direction; second reinforcing bar holes penetrating the chain shaft end section, distributed along a third direction, the first and second reinforcing bar holes overlapping to form a through-hole, wherein the first direction is perpendicular to the second direction, the second direction is perpendicular to the third direction, and the first direction is perpendicular to the third direction; a through-hole located within the chain shaft end section, extending along the first direction, the first and second reinforcing bar holes and the through-hole forming a through-hole, the inner wall of the through-hole having an internal thread; subsequently, bolts are connected to the through-hole, the bolts can directly press against the reinforcing bars inserted into the first and second reinforcing bar holes, thereby increasing the strength at the first and second reinforcing bar holes. Due to the interaction force between the reinforcing bars at the first and second through-holes, in the event of an earthquake, this interaction force can reduce the misalignment between the reinforcing bars, thereby reducing damage to the wall, improving the stability and versatility of the wall, and having a wide range of applications.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] First, please refer to Figures 1 to 2 A chain shaft 100 includes a middle part 101 and an end part 102.

[0034] In this embodiment, the middle portion 101 of the chain shaft extends along the first direction X, and the end portion 102 of the chain shaft is connected to both ends of the middle portion 101. A first reinforcing bar hole 103 penetrates the end portion 102 of the chain shaft along the second direction Y. A second reinforcing bar hole 104 penetrates the end portion 102 of the chain shaft along the third direction Z. The first reinforcing bar hole 103 and the second reinforcing bar hole 104 overlap to form a through hole. The first direction X is perpendicular to the second direction Y, the second direction Y is perpendicular to the third direction Z, and the first direction X is perpendicular to the third direction Z. A through hole 105 is located inside the end portion 102 of the chain shaft and extends along the first direction X. The first reinforcing bar hole 103, the second reinforcing bar hole 104, and the through hole 105 are interconnected. The inner wall of the through hole 105 is provided with an internal thread.

[0035] In this embodiment, a first reinforcing bar is inserted into the first reinforcing bar hole 103, and a second reinforcing bar is inserted into the second reinforcing bar hole 104. A bolt 106 is used in the through hole 105. Since the first reinforcing bar hole 103 and the second reinforcing bar hole 104 overlap and form a through connection, and the through hole 105 is interconnected with both the first and second reinforcing bar holes 103 and 104, the bolt 106 provides a force along the first direction X to resist the first and second reinforcing bars. In addition, the contact portion between the first and second reinforcing bars also provides a relative resistance to their movement, greatly improving the stability and firmness of the connection between the chain shaft 100 and the reinforcing bars (the first and second reinforcing bars), and effectively enhancing the structure. The overall integrity of the chain shaft 100 better resists external forces from different directions, such as shear and tension forces from various directions in building structures. Furthermore, the internal thread on the inner wall of the through hole 105 enables detachable connection between the chain shaft 100 and other components, facilitating installation and subsequent maintenance and replacement. The threaded connection also boasts high strength and reliability, capable of withstanding significant tensile and compressive forces, ensuring structural stability. Moreover, the interconnection of the first reinforcing bar hole 103, the second reinforcing bar hole 104, and the through hole 105 makes the entire chain shaft 100 structure more compact, with close cooperation between its parts, improving space utilization. It achieves multi-directional connection functions within a limited space, facilitating the construction of a more refined and efficient structural system.

[0036] In this embodiment, the end portion 102 of the chain shaft is a square column, and the middle portion 101 of the chain shaft is a circular column. The area at the connection between the middle portion 101 and the end portion 102 of the chain shaft is smaller than the area of ​​the end portion 102 of the chain shaft. This allows the middle portion 101 of the chain shaft to be well supported and limited within the range of the end portion 102 of the chain shaft, increasing the overall stability of the chain shaft 100, preventing the middle portion from shifting or shaking during use, and ensuring the reliability and safety of the structure.

[0037] In this embodiment, the surface of the chain shaft end 102 in the first direction X is higher than the surface of the chain shaft middle portion 101 in the first direction X. There is a height difference h between the chain shaft end 102 and the chain shaft middle portion 101. Thus, when water enters the chain shaft middle portion 101, due to the height difference between the surface of the chain shaft end 102 and the chain shaft middle portion 101, water is less likely to reach the chain shaft end 102, and therefore will not enter the room from the chain shaft end 102, thus playing a good water-proof role.

[0038] In this embodiment, please refer to Figure 1It also includes a bolt 106 that mates with the through hole 105. The bolt 106 is threadedly connected to the through hole 105, which allows the chain shaft 100 to be quickly and easily connected to other components without the need for complex welding or riveting processes. This improves assembly efficiency, reduces construction difficulty and cost, and also facilitates disassembly and adjustment in the later stages, making the entire structure more flexible and maintainable.

[0039] Based on the aforementioned chain shaft 100, please refer to Figures 3 to 5 This utility model also provides a prefabricated chain-frame cavity inner wall 200, including a plurality of chain shafts 100 as described above, and steel mesh 206 located on both sides of the chain shafts 100 along the first direction X. The steel mesh 206 includes a first steel bar 201 that passes through the first steel bar hole 103 along the second direction Y, and a second steel bar 202 that passes through the second steel bar hole 104 along the third direction Z. A hollow cavity 207 is formed between two steel meshes 206; located outside the steel mesh 206 and at the end of the chain shaft. The metal back rib 203 on the surface of part 102 extends along the second direction Y and has a connecting hole (not marked in the figure) corresponding to the through hole 105; a bolt 106 passes through the connecting hole and forms a threaded connection with the through hole 105; the first steel bar 201 and the second steel bar 202 in the steel mesh 206 are respectively inserted into the first steel bar hole 103 and the second steel bar hole 104 of the end of the chain shaft 102, forming a tight connection with the chain shaft 100, which can greatly enhance the prefabricated chain frame. The structural strength and rigidity of the inner wall 200 enable the precast chain-frame hollow inner wall 200 to withstand greater loads and external forces. Simultaneously, the presence of the reinforcing mesh 206 helps improve the crack resistance of the precast chain-frame hollow inner wall 200, extending its service life. Furthermore, the design of the hollow cavity 207 not only reduces the self-weight of the precast chain-frame hollow inner wall 200, lowering the burden on the building foundation, but also provides good thermal and sound insulation, improving the indoor living environment. Additionally, the hollow cavity 207 can accommodate the later installation of water and electricity pipes within the wall. The wiring provides space for easy wiring layout and modification within the building; and the bolts 106 pass through the connecting holes and through holes 105 to form a threaded connection, further strengthening the connection between the chain shaft 100 and the steel mesh 206 and the metal back rib 203, making the entire prefabricated chain frame cavity wall 200 a stable whole structure. The metal back rib 203 can also transfer the internal force to the surrounding building structure, improving the load-bearing capacity and stability of the prefabricated chain frame cavity wall 200, while facilitating connection and fixation with other building components.

[0040] Figure 5 for Figure 3 and Figure 4 Top view, Figure 3 for Figure 5 In the cross-sectional view of AA, Figure 4 for Figure 5 In the cross-sectional view of BB.

[0041] In this embodiment, the end portion 102 of the chain shaft is a square column, and the middle portion 101 of the chain shaft is a circular column. The surface of the end portion 102 of the chain shaft in the first direction X is higher than the surface of the middle portion 101 of the chain shaft in the first direction X. When water enters the middle portion 101 of the chain shaft, due to the height difference between the surface of the end portion 102 of the chain shaft and the middle portion 101 of the chain shaft, water is less likely to reach the end portion 102 of the chain shaft, thus preventing water from entering the room from the end portion 102 of the chain shaft and providing a good water-proof effect.

[0042] It should be noted that the prefabricated chain frame cavity inner wall 200 mentioned above can be prefabricated in the factory.

[0043] In this embodiment, please refer to Figure 6 The metal back rib 203 is C-shaped. Specifically, the metal back rib 203 includes a back rib connecting part 203a for connecting with the end 102 of the chain shaft. The side wall of the back rib connecting part 203a has a blocking part 203b. The included angle between the blocking part 203b and the side wall of the back rib connecting part 203a is greater than 0° and less than or equal to 90°. During the subsequent concrete pouring process, the blocking part 203b can effectively lock the concrete between the blocking part 203b and the back rib connecting part 203a.

[0044] In this embodiment, the included angle between the blocking part 203b and the sidewall of the back rib connecting part 203a is greater than 0° and less than 90°.

[0045] In some embodiments, the angle between the blocking portion 203b and the sidewall of the back rib connecting portion 203a is equal to 90°.

[0046] In this embodiment, the end 102 of the chain shaft is located between the adjacent blocking portions 203b, that is, the end 102 of the chain shaft is in contact with the blocking portion 203b. In this way, during the subsequent concrete pouring process, the concrete is surrounded on all sides, which helps to improve the stability between the metal back rib 203 and the chain shaft 100.

[0047] In some embodiments, please refer to Figures 7 to 8 It also includes: a cement substrate 204 located on the surface of the metal back rib 203, wherein structural adhesive (not marked in the figure) is coated between the cement substrate 204 and the surface of the metal back rib 203.

[0048] Figure 7 View direction and Figure 3 The view orientation is consistent. Figure 8 View direction and Figure 4 The view orientation is consistent.

[0049] In some embodiments, please refer to Figures 9 to 10 It also includes: a concrete layer 205 located within the hollow cavity 207.

[0050] In some embodiments, please refer to Figures 11 to 12 It also includes: a cement substrate 204 located on the surface of the metal back rib 203, with structural adhesive (not marked in the figure) coated between the cement substrate 204 and the surface of the metal back rib 203, and a concrete layer 205 located in the hollow cavity 207.

[0051] This utility model also provides a chain shaft 300, please refer to it. Figures 13 to 14 The chain shaft includes a middle portion 301 extending along a first direction X, comprising a first end and a second end opposite to each other; a first chain shaft end portion 302a connected to the first end; and a second chain shaft end portion 302b connected to the second end. The second chain shaft 300 has a dimension L2 along the first direction X that is greater than the first chain shaft 300's dimension L1 along the first direction X. Both the first chain shaft end portion 302a and the second chain shaft end portion 302b are provided with first reinforcing bar holes 303, and each first reinforcing bar hole 303 penetrates the corresponding chain shaft end portion (302a / 302b) along a second direction Y. Both the first chain shaft end portion 302a and the second chain shaft end portion 302b are provided with second reinforcing bar holes 304, and each second reinforcing bar hole 304 penetrates the corresponding chain shaft end portion 102 along a third direction Z. The reinforcing bar hole 303 and the second reinforcing bar hole 304 overlap and form a through connection, wherein the first direction X is perpendicular to the second direction Y, the second direction Y is perpendicular to the third direction Z, and the first direction X is perpendicular to the third direction Z; a limiting plate 305 is located on the end 302b of the second chain shaft, the limiting plate 305 surrounds the outer surface of the end 302b of the second chain shaft perpendicular to the first direction X, the first reinforcing bar hole 303 and the second reinforcing bar hole 304 on the second chain shaft 300 are located between the middle part 301 of the chain shaft and the limiting plate 305; a through hole 306 is located in the end 302a of the first chain shaft and the end 302b of the second chain shaft, the through hole 306 extends along the first direction X, the first reinforcing bar hole 303, the second reinforcing bar hole 304 and the through hole 306 form a through connection with each other, and the inner wall of the through hole 306 is provided with internal threads.

[0052] In this embodiment, the first rebar hole 303 and the second rebar hole 304 on the end 302b of the second chain shaft are located on the same side of the limiting plate 305. The thickness of the inner wall of the prefabricated chain frame cavity can be set by using the limiting plate 305.

[0053] In this embodiment, please refer to Figure 13 and Figure 14 The first chain shaft end 302a and the second chain shaft end 302b include a first sub-part 302b-1 and a second sub-part 302b-2 located on both sides of the limiting plate 305. The first sub-part 302b-1 and the second sub-part 302b-2 are square columns, and the middle part of the chain shaft 301 is circular. The surface of the first chain shaft end 302a in the first direction X is higher than the surface of the middle part of the chain shaft 301 in the first direction X; the surface of the second chain shaft end 302b in the first direction X is higher than the surface of the middle part of the chain shaft 301 in the first direction X. That is, the second chain shaft end 302b and the first chain shaft end 302a are respectively separated from the middle part of the chain shaft 301 by a height difference of h1.

[0054] In some embodiments, the first sub-part 302b-1 is in the shape of a square column, and the second sub-part 302b-2 is in the shape of a circular column.

[0055] In this embodiment, the first rebar hole 303 and the second rebar hole 304 are both located within the first sub-part 302b-1.

[0056] In some embodiments, the first reinforcing bar hole 303 and the second reinforcing bar hole 304 may also be located simultaneously within the second sub-part 302b-2.

[0057] In this embodiment, the height difference between the second chain shaft end 302b and the first chain shaft end 302a and the middle part 301 of the chain shaft is equal. Of course, they may not be equal, and can be set according to actual needs.

[0058] In this embodiment, a bolt 308 is also included, which is used in conjunction with the through hole 306 on the end of the first chain shaft 302a; a connector 307 is provided, one end of which is used in conjunction with the through hole 306 on the end of the second chain shaft 302b, and the other end of which is provided with a steel bar through hole 307a.

[0059] Accordingly, please refer to Figures 15 to 17This utility model also provides a prefabricated chain-frame cavity exterior wall 400 formed using the aforementioned chain shafts 300, including multiple chain shafts 300, a steel mesh 408 located on both sides of the chain shafts 300 along the first direction X, the steel mesh 408 including a first steel bar 401 inserted into the first steel bar hole 303 along the second direction Y, and a second steel bar 402 inserted into the second steel bar hole 304 along the third direction Z, the steel mesh 408 having a hollow cavity 409 between them; a metal back rib 403 located outside the steel mesh 408 and on the surface of the end 302a of the first chain shaft, the metal back rib 403 extending along the second direction Y, the metal back rib 403 having a through hole 302a. 06 corresponds to the connecting hole (not shown in the figure); bolt 308, which passes through the connecting hole and forms a threaded connection with the through hole 306; connector 307, one end of which is used to cooperate with the through hole 306 on the end of the second chain shaft 302b to form a threaded connection, and the other end of the connector 307 is provided with a steel bar through hole 307a; located outside the steel mesh 408; located on the outer layer 404 on the surface of the end of the second chain shaft 302b, the other end of the connector 307 is located inside the outer layer 404, and an external connecting steel bar 405 is inserted into the steel bar through hole 307a. The outer layer 404 includes an insulation layer 404a and an outer leaf plate 404b sequentially arranged on the outer side of the surface of the end of the second chain shaft 302b.

[0060] In this embodiment, the first reinforcing bar 401 and the second reinforcing bar 402 are inserted into the corresponding reinforcing bar holes and then come into contact with each other. The bolt 308 and the connector 307 also provide a resisting force along the first direction, which greatly improves the stability and firmness of the prefabricated chain-frame cavity outer wall 400. This effectively enhances the overall integrity of the structure and better resists external forces from different directions, such as shear forces and tensile forces from various directions in building structures. In addition, the presence of the reinforcing bar through hole 307a allows the external connecting reinforcing bar 405 to be directly inserted. The external connecting reinforcing bar 405 is wrapped in the outer layer 404, thereby enhancing the connection stability of the outer layer 404, reducing the detachment of the outer layer 404, and improving the service life of the prefabricated chain-frame cavity outer wall 400.

[0061] Figure 15 for Figure 16 and Figure 17 Top view, Figure 16 for Figure 17 In the cross-sectional view of AA, Figure 17 for Figure 15 In the sectional view of BB.

[0062] It should be noted that the aforementioned prefabricated chain-frame cavity exterior wall 400 can be prefabricated in the factory.

[0063] In some embodiments, please refer to Figures 18 to 19 It also includes: a cement substrate 406 located on the surface of the metal back rib 403, wherein the cement substrate 406 and the surface of the metal back rib 403 are bonded with structural adhesive (not marked in the figure).

[0064] In some embodiments, please refer to Figures 20 to 21 It also includes: a concrete layer 407 located within the hollow cavity 409.

[0065] In some embodiments, please refer to Figures 22 to 23 It also includes: a cement substrate 406 located on the surface of the metal back rib 403, the cement substrate 406 and the surface of the metal back rib 403 having structural adhesive, a concrete layer 407 located in the hollow cavity 409, and an outer layer 404 located outside the steel mesh 408 and on the surface of the second chain shaft end 302b, the other end of the connector 307 being located inside the outer layer 404, an external connecting steel bar being inserted into the steel bar through hole, and the outer layer 404 including an insulation layer 404a and an outer leaf plate 404b sequentially disposed on the outer side of the surface of the second chain shaft end 302b.

[0066] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A chain shaft, characterized in that, include: The middle part of the chain shaft extends along a first direction; The ends of the chain shaft are connected to both ends of the middle part of the chain shaft; A first reinforcing bar hole penetrating the end of the chain shaft, the first reinforcing bar hole penetrating the end of the chain shaft along a second direction; A second reinforcing bar hole penetrates the end of the chain shaft. The second reinforcing bar hole penetrates the end of the chain shaft along a third direction. The first reinforcing bar hole and the second reinforcing bar hole overlap to form a through connection. The first direction is perpendicular to the second direction, the second direction is perpendicular to the third direction, and the first direction is perpendicular to the third direction. A through hole is located at the end of the chain shaft, the through hole extends along the first direction, the first reinforcing bar hole, the second reinforcing bar hole and the through hole are interconnected, and the inner wall of the through hole is provided with internal threads.

2. The chain shaft as described in claim 1, characterized in that, The end of the chain shaft is shaped like a square column, the middle part of the chain shaft is shaped like a circular column, and the surface of the end of the chain shaft in the first direction is higher than the surface of the middle part of the chain shaft in the first direction.

3. The chain shaft as described in claim 1, characterized in that, Also includes: Bolts used in conjunction with the through holes.

4. A chain shaft, characterized in that, include: The chain shaft has a middle portion that extends along a first direction and includes a first end and a second end that are opposite to each other. The end of the first chain shaft connected to the first end; A second chain shaft end connected to the second end, wherein the dimension of the second chain shaft along the first direction is greater than the dimension of the first chain shaft along the first direction, and both the first chain shaft end and the second chain shaft end are provided with first steel bar holes, and each first steel bar hole penetrates the corresponding chain shaft end along the second direction; both the first chain shaft end and the second chain shaft end are provided with second steel bar holes, and each second steel bar hole penetrates the corresponding chain shaft end along the third direction, wherein the first steel bar holes and the second steel bar holes overlap to form a through connection, wherein the first direction is perpendicular to the second direction, the second direction is perpendicular to the third direction, and the first direction is perpendicular to the third direction; A limiting plate is located on the end of the second chain shaft, the limiting plate is wrapped around the outer surface of the end of the second chain shaft in a direction perpendicular to the first direction, and the first rebar hole and the second rebar hole on the second chain shaft are located between the middle part of the chain shaft and the limiting plate; The through holes are located inside the ends of the first and second chain shafts, and extend along the first direction. The first reinforcing bar hole, the second reinforcing bar hole, and the through holes are interconnected. The inner wall of the through holes is provided with internal threads.

5. The chain shaft as described in claim 4, characterized in that, The first chain shaft end is shaped like a square column, and the second chain shaft end includes a first sub-part and a second sub-part located on both sides of the limiting plate. The first sub-part and the second sub-part are shaped like square columns, or the first sub-part is shaped like a square column and the second sub-part is shaped like a circular column. The middle part of the chain shaft is shaped like a circular column. The surface of the first chain shaft end in the first direction is higher than the surface of the middle part of the chain shaft in the first direction; the surface of the second chain shaft end in the first direction is higher than the surface of the middle part of the chain shaft in the first direction.

6. The chain shaft as described in claim 4, characterized in that, It also includes bolts, which are used in conjunction with the through holes on the end of the first chain shaft; and a connector, one end of which is used in conjunction with the through holes on the end of the second chain shaft, and the other end of which is provided with a steel bar through hole.

7. A prefabricated chain-frame cavity interior wall, characterized in that, include: Multiple chain shafts as described in any one of claims 1 to 3; A steel mesh located on both sides of the chain shaft along the first direction, the steel mesh including a first steel bar that passes through the first steel bar hole along the second direction, and a second steel bar that passes through the second steel bar hole along the third direction, with a hollow cavity formed between the two steel meshes; A metal back rib located outside the steel mesh and on the end surface of the chain shaft, the metal back rib extending along the second direction, and having a connecting hole corresponding to the through hole; A bolt passes through the connecting hole and forms a threaded connection with the through hole.

8. The prefabricated chain-frame cavity wall as described in claim 7, characterized in that, Also includes: A cement substrate is located on the surface of the metal back rib, and a structural adhesive is coated between the cement substrate and the surface of the metal back rib, and a concrete layer is located in the hollow cavity, wherein the cement substrate and the concrete layer exist simultaneously or only one of them exists.

9. A prefabricated chain-frame cavity exterior wall, characterized in that, include: Multiple chain shafts as described in any one of claims 4 to 6; A steel mesh located on both sides of the chain shaft along the first direction, the steel mesh including a first steel bar that passes through the first steel bar hole along the second direction, and a second steel bar that passes through the second steel bar hole along the third direction, the steel mesh having a hollow cavity between them; A metal back rib located outside the steel mesh and on the end surface of the first chain shaft, the metal back rib extending along the second direction, and having a connecting hole corresponding to the through hole; A bolt passes through the connecting hole and forms a threaded connection with the through hole; A connector, one end of which is used to form a threaded connection with the through hole on the end of the second chain shaft, and the other end of which is provided with a steel bar through hole; Located outside the steel mesh and on the outer surface of the end of the second chain shaft, the other end of the connector is located inside the outer layer. An external connecting steel bar is inserted into the steel through hole. The outer layer includes an insulation layer and an outer leaf plate arranged sequentially on the outer surface of the end of the second chain shaft.

10. The prefabricated chain-frame cavity exterior wall as described in claim 9, characterized in that, It also includes: a cement substrate located on the surface of the metal back rib, wherein the cement substrate and the surface of the metal back rib are bonded with structural adhesive; and a concrete layer located within the hollow cavity, wherein the cement substrate and the concrete layer are present simultaneously or at least one of them is present.

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