High-strength light-weight assembled prefabricated balcony

Abstract

The utility model discloses a high -strength light assembly type prefabricated balcony, include: concrete pre -pouring body, including balcony board and wall board, balcony reinforcing frame, including first balcony reinforcing bar and second balcony reinforcing bar, wall reinforcing frame, including first wall reinforcing bar and second wall reinforcing bar, clamping subassembly is used for locking connection with first balcony reinforcing bar, second balcony reinforcing bar, first wall reinforcing bar and second wall reinforcing bar, first balcony reinforcing bar, second balcony reinforcing bar, first wall reinforcing bar and second wall reinforcing bar all include straight -line reinforcing bar and screw pipe. The high -strength light assembly type prefabricated balcony is connected in proper order through straight -line reinforcing bar and screw pipe, forms first balcony reinforcing bar, second balcony reinforcing bar, first wall reinforcing bar and second wall reinforcing bar, and locks the connection through clamping subassembly, guarantees the structure strength of balcony board and wall board on the basis, reduces the kind number of parts used in production, reduces production cost, and convenient assembly construction splicing, alleviates the work intensity of worker.

Description

Technical Field

[0001] This utility model relates to the field of irregular prefabricated component technology, and in particular to a high-strength, lightweight, assembled prefabricated balcony. Background Technology

[0002] Prefabricated balconies are building components that are prefabricated in a factory and then transported to the construction site for installation. They are an important part of prefabricated buildings and are widely used in residential, commercial and other building projects.

[0003] In the prior art, such as the Chinese utility model patent with announcement number CN220908666U, a precast concrete balcony is disclosed. While increasing the balcony slab and the wall slab by adding a balcony reinforcement frame and a wall reinforcement frame respectively, the first transverse steel bar and the first longitudinal steel bar penetrate through the side wall of the balcony slab, and the second steel bar penetrates through the wall slab, which facilitates the bonding with the cast-in-place concrete, improves the connection strength, and thus improves the overall strength of the balcony.

[0004] While the aforementioned prefabricated balconies ensure structural strength, the production process requires various types of reinforcing bars, including first transverse bars, first longitudinal bars, reinforcing bars, second bars, and third bars. In addition, it necessitates the preparation of various components such as positioning frames, splicing pipes, sealing pipes, positioning frames, positioning tubes, sealing plugs, and positioning protrusions. This necessitates the preparation of multiple materials, increasing production costs. Furthermore, the large length and weight of the first transverse bars, first longitudinal bars, second bars, and third bars increase the workload for workers during construction. Moreover, the solid concrete structure of the prefabricated wall panels in the balcony structure increases the amount of concrete used, further increasing the overall weight of the prefabricated balcony and consequently raising transportation and assembly costs.

[0005] Therefore, it is necessary to improve the existing prefabricated balconies. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects in the existing technology and provide a high-strength, lightweight prefabricated balcony that reduces the number of parts, facilitates construction and production, and reduces weight for transportation and assembly while ensuring structural strength.

[0007] To achieve the above-mentioned technical effects, the technical solution of this utility model is: a high-strength, lightweight, prefabricated assembly balcony, comprising:

[0008] A precast concrete structure includes a horizontal balcony slab and a wall panel integrally connected to the side wall of the balcony slab, wherein the wall panel is vertically arranged and extends in an L-shape;

[0009] The balcony reinforcement frame is set in the precast concrete body and includes a first balcony steel bar and a second balcony steel bar that penetrate the balcony slab horizontally and are perpendicular to the length direction.

[0010] The wall reinforcement frame includes a first wall reinforcement bar and a second wall reinforcement bar. The first wall reinforcement bar passes through the wall panel and is horizontally arranged. The second wall reinforcement bar is arranged inside the wall panel and is distributed at intervals along the extension trajectory of the wall panel.

[0011] Multiple clamping components are provided to lock and connect the steel bars of the first balcony, the steel bars of the second balcony, the steel bars of the first wall, and the steel bars of the second wall.

[0012] The first balcony reinforcement, the second balcony reinforcement, the first wall reinforcement, and the second wall reinforcement all include straight steel bars and threaded tubes that are distributed at intervals and connected by threads.

[0013] Preferably, in order to increase the structural strength of the balcony slab and the wall slab, the first balcony reinforcement and the second balcony reinforcement further include U-shaped reinforcement, the two ends of which are distributed along the vertical direction and are threaded to the spiral tube. The first wall reinforcement and the second wall reinforcement further include L-shaped reinforcement, which are threaded to the spiral tube.

[0014] Preferably, in order to lock and connect the first balcony reinforcement, the second balcony reinforcement, the first wall reinforcement, and the second wall reinforcement, the clamping assembly is used to lock and connect adjacent straight or U-shaped reinforcements with perpendicular extension trajectories among the first balcony reinforcement, the second balcony reinforcement, the first wall reinforcement, and the second wall reinforcement.

[0015] Preferably, in order to lock two adjacent and axially perpendicular straight steel bars together, the clamping assembly includes two opposing clamping plates, and clamping grooves extending in perpendicular directions are provided on the opposite surfaces of the two clamping plates. The two clamping plates lock adjacent straight steel bars or U-shaped steel bars with perpendicular extension trajectories together by threaded bolts and nuts.

[0016] Preferably, in order to facilitate tightening of the two clamping plates, notches are provided on the outer circumferential edges of both clamping plates for the insertion of the bolt shank.

[0017] Preferably, to ensure locking strength and prevent the bolt and nut from detaching from the two clamping plates, the notch is elongated, and a stepped hole is provided at the end of the notch away from the outer edge of the corresponding clamping plate. The size of the hole at the end of the stepped hole facing away from the clamping groove is larger than the size of the hole at the other end and the width of the notch. An outer flange is provided at the end of the nut adjacent to the head of the bolt. Both the outer flange and the head of the bolt are adapted to the opening of the stepped hole at the end of the clamping groove.

[0018] Preferably, in order to reduce the weight of the wall panel, the wall reinforcement frame also includes a hollow weight-reducing shell, which is disposed at both ends of the second wall reinforcement and there are four of them, two of which extend along the length direction of the first balcony reinforcement and the remaining two extend along the length direction of the second balcony reinforcement.

[0019] Preferably, for ease of assembly, the weight-reducing shell includes telescopic shells distributed along its own length and sequentially inserted and fitted together. The telescopic shells are hollow, and each end of the telescopic shell is provided with a matching insertion protrusion and insertion recess.

[0020] Preferably, in order to achieve adjustable length of the telescopic shell, several telescopic shells are sequentially spliced ​​to form a weight-reducing shell. The telescopic shell includes an outer outer barrel and an inner insert barrel distributed along the length direction of the weight-reducing shell. The circumferential inner wall of the outer outer barrel is sealed and fitted to the circumferential outer edge of the inner insert barrel, and the open sides face opposite directions.

[0021] Preferably, in order to facilitate the relative sliding connection between the outer sleeve and the inner sleeve, the insertion protrusion and the insertion recess are respectively provided on the inner sleeve and the outer sleeve. The insertion protrusion is also provided with a balance through hole communicating with its own inner cavity. The outer sleeve is provided with a sleeve hole that is isolated from its own inner cavity. The sleeve hole is fitted onto the outside of the end of the second wall reinforcement.

[0022] In summary, compared with the prior art, the high-strength lightweight prefabricated balcony of this utility model forms the first balcony reinforcement, the second balcony reinforcement, the first wall reinforcement and the second wall reinforcement by sequentially connecting straight steel bars and spiral pipes, and locking them together with clamping components. This ensures the structural strength of the balcony panel and the wall panel, while reducing the types and number of parts used in production, lowering production costs, and facilitating assembly and splicing, thus reducing the workload of workers. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0024] Figure 2 yes Figure 1 The structural schematic diagram of the precast concrete structure is omitted in the text.

[0025] Figure 3 yes Figure 2 An explosion diagram;

[0026] Figure 4 This is an exploded schematic diagram of the reinforcing steel bars of the second wall in the first embodiment;

[0027] Figure 5 This is a structural schematic diagram of the reinforcement bars of the first enclosure wall in the first embodiment;

[0028] Figure 6 This is a structural schematic diagram of the balcony reinforcement frame in the first embodiment;

[0029] Figure 7 yes Figure 6 An explosion diagram;

[0030] Figure 8 This is a schematic diagram of the clamping assembly in the first embodiment;

[0031] Figure 9 yes Figure 8 An explosion diagram;

[0032] Figure 10 yes Figure 8 An illustration of the explosion from another perspective;

[0033] Figure 11 This is a structural schematic diagram of the second embodiment, omitting the precast concrete structure;

[0034] Figure 12 This is a schematic diagram of the telescopic shell in the second embodiment;

[0035] Figure 13 This is a cross-sectional structural diagram of the telescopic shell in the second embodiment;

[0036] Figure 14 This is a cross-sectional structural diagram of the telescopic shell in the third embodiment;

[0037] In the diagram: 1. Precast concrete body; 11. Balcony slab; 12. Enclosure wall panel; 2. Balcony reinforcement frame; 21. First balcony reinforcement; 22. Second balcony reinforcement; 3. Enclosure wall reinforcement frame; 31. First enclosure wall reinforcement; 32. Second enclosure wall reinforcement; 33. Weight reduction shell; 331. Outer sleeve; 3311. Insertion recess; 3312. Sleeve hole; 332. Inner insert; 3321. Insertion protrusion; 3322. Balance through hole; 34. Locking sleeve; 4. Clamping assembly; 41. Clamping plate; 411. Clamping groove; 412. Notch; 413. Step hole; 414. Observation through hole; 42. Bolt; 43. Nut; 431. Outer flange; 5. Straight reinforcement; 6. Threaded tube; 7. U-shaped reinforcement; 8. L-shaped reinforcement. Detailed Implementation

[0038] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0039] First Embodiment

[0040] like Figures 1-10 As shown, a high-strength, lightweight, prefabricated balcony according to the first embodiment of this utility model includes:

[0041] The precast concrete body 1 includes a horizontal balcony slab 11 and a wall panel 12 integrally connected to the side wall of the balcony slab 11. The wall panel 12 is vertically arranged and extends in an L-shape.

[0042] The balcony reinforcement frame 2 is set inside the precast concrete body 1, including a first balcony steel bar 21 and a second balcony steel bar 22 that penetrate the balcony slab 11 horizontally and are perpendicular to the length direction.

[0043] The wall reinforcement frame 3 includes a first wall reinforcement 31 and a second wall reinforcement 32. The first wall reinforcement 31 penetrates the wall panel 12 and is set horizontally, while the second wall reinforcement 32 is set inside the wall panel 12 and is distributed at intervals along the extension trajectory of the wall panel 12.

[0044] Clamping components 4, which are provided in multiple parts, are used to lock and connect the first balcony steel bar 21, the second balcony steel bar 22, the first wall steel bar 31, and the second wall steel bar 32.

[0045] The first balcony reinforcement 21, the second balcony reinforcement 22, the first wall reinforcement 31, and the second wall reinforcement 32 all include straight steel bars 5 and threaded tubes 6 that are distributed at intervals and connected by threads.

[0046] In this embodiment, the balcony slab 11 is a rectangular plate structure used to bear the load of people and goods. The surrounding wall 12 is used to surround the outside of the balcony slab 11 to protect people and goods on the balcony slab 11 and prevent them from falling. The balcony slab 11 and the surrounding wall 12 are formed by pouring concrete and then curing them into a single unit. The balcony reinforcement frame 2 and the surrounding wall reinforcement frame 3 are used to increase the structural strength and rigidity of the balcony slab 11 and the surrounding wall 12 to prevent cracking and damage. The first balcony steel bars 21 are distributed at intervals along the length of the balcony slab 11, and both ends pass through the balcony slab 11. One end is fixedly connected to the wall panel 12, and the second balcony steel bar 22 is distributed at intervals along the width direction of the balcony panel 11, with both ends penetrating the balcony panel 11. One end is fixedly connected to the wall panel 12, thereby increasing the structural strength of the wall panel 12 and the connection strength between the wall panel 12 and the balcony panel 11. In the wall reinforcement frame 3, both ends of the first balcony steel bar 21 penetrate the ends of the wall panel 12 for easy assembly. The second wall steel bar 32 is fixed inside the wall panel 12 and distributed along the extension trajectory of the wall panel 12. The two work together to enhance the structural strength of the wall panel 12.

[0047] Compared with the prior art, the first balcony steel bar 21, the second balcony steel bar 22, the first wall steel bar 31, and the second wall steel bar 32 in this embodiment are all assembled into a split structure mainly composed of straight steel bars 5 and threaded tubes 6, and locked together by clamping components 4. This not only reduces the number of different types of parts used in the production of prefabricated balconies, but also allows for the direct assembly of multiple lighter straight steel bars 5 and threaded tubes 6 during production, which can be locked together by clamping components 4. Compared with directly locking together the heavier integrated first balcony steel bar 21, second balcony steel bar 22, first wall steel bar 31, and second wall steel bar 32, this reduces the workload of workers.

[0048] A further improvement is that the first balcony reinforcement 21 and the second balcony reinforcement 22 also include U-shaped reinforcement 7, with both ends of the U-shaped reinforcement 7 distributed along the vertical direction, and both ends of the U-shaped reinforcement 7 threadedly connected to the threaded tube 6. The first wall reinforcement 31 and the second wall reinforcement 32 also include L-shaped reinforcement 8, with the L-shaped reinforcement 8 threadedly connected to the threaded tube 6.

[0049] Specifically, for both the first balcony reinforcement 21 and the second balcony reinforcement 22, one U-shaped reinforcement 7 is provided, located at its center. After casting, the center of the U-shaped reinforcement 7 is located inside the wall panel 12. This structure allows the first balcony reinforcement 21 and the second balcony reinforcement 22 to form two layers of horizontal steel mesh, which helps to enhance the structural strength of the balcony panel 11 and thus enhance its load-bearing capacity. For the first wall reinforcement 31, one L-shaped reinforcement 8 is provided, located at one corner of the balcony panel 11, used to change the position of the straight reinforcement 5 and the threaded tube 6, so that the straight reinforcement 5 and the threaded tube 6... The connection between the wall panel 12 and the two side walls of the balcony panel 11 can be strengthened. For the second wall reinforcement 32, there are two L-shaped steel bars 8, located at both ends. The horizontal part of these two L-shaped steel bars 8 extends outwards away from the balcony panel 11, and the vertical part is coaxial. The vertical part of the two is connected by a spiral tube 6 and a straight steel bar 5. In this way, while ensuring the structural strength of the wall panel 12, the size of the top and bottom of the wall panel 12 can be increased. On the one hand, this improves the shear and bending bearing capacity of the wall panel 12 and reduces the direction of cracking. On the other hand, it facilitates modularization of the mold and makes demolding more stable.

[0050] A further improvement is that the clamping assembly 4 is used to lock and connect the adjacent straight steel bars 5 or U-shaped steel bars 7 with perpendicular extension trajectories among the first balcony steel bar 21, the second balcony steel bar 22, the first wall steel bar 31, and the second wall steel bar 32.

[0051] Specifically, for the balcony reinforcement frame 2, the clamping assembly 4 can lock and connect two adjacent and axially perpendicular straight steel bars 5 in the first balcony steel bar 21 and the second balcony steel bar 22. For the wall reinforcement frame 3, the clamping assembly 4 can lock and connect the straight steel bars 5 in the first wall steel bar 31 and the straight steel bars 5 in the second wall steel bar 32. In addition, the clamping assembly 4 can also lock and connect the middle part of the U-shaped steel bars 7 in the first balcony steel bar 21 and the second balcony steel bar 22 to the straight steel bars 5 in the first wall steel bar 31, thereby strengthening the structural strength of the reinforced concrete precast body 1.

[0052] The clamping assembly 4 includes two opposing clamping plates 41. The opposing surfaces of the two clamping plates 41 are provided with clamping grooves 411 extending in a perpendicular direction. The two clamping plates 41 are connected by threaded bolts 42 and nuts 43 to lock and connect adjacent straight steel bars 5 or U-shaped steel bars 7 with perpendicular extension trajectories.

[0053] The cross-section of the clamping groove 411 is semi-circular, and its diameter is consistent with the outer diameter of the straight steel bar 5 and the U-shaped steel bar 7, making it convenient to fit over the straight steel bar 5 and the middle of the U-shaped steel bar 7. During assembly, the openings of the clamping grooves 411 of the two clamping plates 41 are oriented in opposite directions, and the openings of the clamping grooves 411 are oriented between the two clamping plates 41. The extension directions of the two clamping grooves 411 are perpendicular. The two clamping plates 41 are brought close to each other by the threaded bolts 42 and nuts 43, so that the two clamping plates 41 work together to clamp the two straight steel bars 5 or clamp the middle of one straight steel bar 5 and one U-shaped steel bar 7.

[0054] A further improvement is that notches 412 are provided on the outer circumferential edges of both clamping plates 41 for the insertion of the shank of bolt 42. The notches 412 are elongated, and a stepped hole 413 is provided at the end of the notch 412 away from the outer circumferential edge of the corresponding clamping plate 41. The opening of the stepped hole 413 at the end opposite to the clamping groove 411 is larger than the opening size of the other end and the width of the notch 412. An outer flange 431 is provided at the end of the nut 43 adjacent to the head of the bolt 42. The outer flange 431 and the head of the bolt 42 are both adapted to the opening of the stepped hole 413 at the end opposite to the head of the clamping groove 411.

[0055] By setting a notch 412, the bolt 42 can be moved from the periphery of the clamping plate 41 to the outer edge through the notch 412 to the stepped hole 413, and then the nut 43 is screwed on, so that the head of the bolt 42 and the outer flange 431 of the nut 43 respectively enter the larger part of the stepped hole 413 of the two clamping plates 41, preventing it from slipping out of the notch 412 and ensuring a stable connection between the bolt 42 and the nut 43.

[0056] Both clamping plates 41 are also provided with observation through holes 414, which are connected to the clamping grooves 411. The observation through holes 414 facilitate the observation of the clamping status of the straight steel bars 5 and U-shaped steel bars 7. On the other hand, when pouring concrete grout, the observation through holes 414 facilitate the concrete grout to enter and contact with the straight steel bars 5 and U-shaped steel bars 7, thereby ensuring the structural strength of the connection between the concrete grout and the balcony reinforcement frame 2 and the wall reinforcement frame 3 after the concrete grout has solidified.

[0057] In this embodiment, the two clamping plates 41 are identical in shape and size. The clamping plate 41 is a square plate with notches 412 at each of its four corners for easy assembly.

[0058] Second Embodiment

[0059] like Figures 11-13 As shown, the second embodiment of this utility model provides a high-strength, lightweight, prefabricated balcony based on the first embodiment. The difference is that the wall reinforcement frame 3 also includes a hollow weight-reducing shell 33. The weight-reducing shell 33 is disposed at both ends of the second wall reinforcement 32 and there are four of them. Two of them extend along the length direction of the first balcony reinforcement 21, and the remaining two extend along the length direction of the second balcony reinforcement 22.

[0060] By adopting the above structure and setting the weight-reducing shell 33, the amount of concrete grout used in casting the precast wall panel 12 can be reduced, thereby reducing the weight of the precast balcony. Since the main load of the precast balcony is concentrated on the balcony panel 11, while the load of the wall panel 12 is much lower than that of the balcony panel 11, by reducing the amount of concrete grout used in the wall panel 12, the weight of the balcony is reduced while ensuring safe use, making transportation and assembly more convenient.

[0061] A further improvement is that the weight-reducing shell 33 includes telescopic shells distributed along its own length and sequentially inserted and fitted together. The telescopic shells are hollow, and each end of the telescopic shell is provided with a matching insertion protrusion 3321 and an insertion recess 3311.

[0062] By utilizing the insertion protrusions 3321 and insertion recesses 3311 at both ends of the telescopic shell, it is easy to insert and fit between two adjacent telescopic shells. In this way, the telescopic shells can be spliced ​​in sequence to form a weight-reducing shell 33, thereby reducing the amount of concrete poured for the production of the wall panel 12 and meeting the requirements of lightweight.

[0063] A further improvement is that the telescopic shell includes an outer sleeve 331 and an inner sleeve 332 distributed along the length of the weight-reducing shell 33. The circumferential inner wall of the outer sleeve 331 is sealed and fitted with the circumferential outer edge of the inner sleeve 332, and the open sides face opposite directions.

[0064] This design utilizes the interlocking and sealed connection of the inner insert 332 and the outer insert 331 to form a telescopic shell with an adjustable length.

[0065] A further improvement is that the insertion protrusion 3321 and the insertion recess 3311 are respectively provided on the inner insertion barrel 332 and the outer barrel 331. The outer barrel 331 is provided with a sleeve hole 3312 that is isolated from its own inner cavity. The sleeve hole 3312 is fitted onto the outside of the end of the second wall reinforcement 32.

[0066] A sleeve hole 3312 is provided on the outer sleeve 331 to isolate it from its own inner cavity, so as to facilitate the sleeve being fitted onto the outside of the end of the second wall reinforcement 32, that is, the horizontal part of the L-shaped reinforcement 8, thereby facilitating the installation of the telescopic shell. In order to prevent the outer sleeve 331 from detaching from the second wall reinforcement 32, the wall reinforcement frame 3 also includes a locking sleeve 34. The number of locking sleeves 34 is twice the number of weight-reducing shells 33, that is, one weight-reducing shell 33 corresponds to two locking sleeves 34. The two locking sleeves 34 correspond to the two telescopic shells at the middle end of the weight-reducing shell 33, respectively. Specifically, the locking sleeve 34 is threaded to the horizontal part of the L-shaped reinforcement 8 at the end of the second wall reinforcement 32 to achieve the effect of limiting the weight-reducing shell 33 and preventing the outer sleeve 331 fitted onto the L-shaped reinforcement 8 from detaching from the second wall reinforcement 32.

[0067] Third Embodiment

[0068] like Figure 14 As shown, the third embodiment of this utility model provides a high-strength, lightweight prefabricated balcony, which is based on the second embodiment, but differs in that the plug-in protrusion 3321 is also provided with a balance through hole 3322 that communicates with its own inner cavity.

[0069] By setting a balance through hole 3322, it is possible to maintain the communication between the inner cavity of the telescopic shell formed by the outer sleeve 331 and the inner sleeve 332 and the outside world when the length of the telescopic shell is adjusted and the insertion protrusion 3321 is not connected with the insertion recess 3311 of another telescopic shell, so as to ensure the stability of the internal air pressure. When the insertion protrusion 3321 is connected with the insertion recess 3311, the circumferential outer edge of the insertion protrusion 3321 is sealed and fitted with the circumferential inner wall of the insertion recess 3311. The balance through hole 3322, while realizing the connection of two adjacent telescopic shells, prevents concrete slurry from entering the interior of the telescopic shell when pouring concrete slurry.

[0070] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-strength, lightweight, prefabricated assembly balcony, characterized in that, include: A precast concrete structure includes a horizontal balcony slab and a wall panel integrally connected to the side wall of the balcony slab, wherein the wall panel is vertically arranged and extends in an L-shape; A balcony reinforcement frame is installed in the precast concrete body and includes a first balcony steel bar and a second balcony steel bar that penetrate the balcony slab horizontally and are perpendicular to each other in the length direction. The wall reinforcement frame includes a first wall reinforcement bar and a second wall reinforcement bar. The first wall reinforcement bar passes through the wall panel and is horizontally arranged. The second wall reinforcement bar is arranged inside the wall panel and is distributed at intervals along the extension trajectory of the wall panel. Multiple clamping components are provided to lock and connect the steel bars of the first balcony, the steel bars of the second balcony, the steel bars of the first wall, and the steel bars of the second wall. The first balcony reinforcement, the second balcony reinforcement, the first wall reinforcement, and the second wall reinforcement all include straight steel bars and threaded tubes that are distributed at intervals and connected by threads.

2. The high-strength, lightweight, prefabricated balcony according to claim 1, characterized in that: The first balcony reinforcement and the second balcony reinforcement also include U-shaped reinforcement, the two ends of which are distributed along the vertical direction and are threaded to the spiral pipe. The first wall reinforcement and the second wall reinforcement also include L-shaped reinforcement, which are threaded to the spiral pipe.

3. The high-strength, lightweight, prefabricated balcony according to claim 2, characterized in that: The clamping assembly is used to lock and connect adjacent straight or U-shaped steel bars with perpendicular extension trajectories among the steel bars of the first balcony, the steel bars of the second balcony, the steel bars of the first wall, and the steel bars of the second wall.

4. The high-strength, lightweight, prefabricated balcony according to claim 3, characterized in that: The clamping assembly includes two opposing clamping plates, and clamping grooves extending in perpendicular directions are provided on the opposite surfaces of the two clamping plates. The two clamping plates lock two adjacent straight steel bars or U-shaped steel bars with perpendicular extension trajectories by threaded bolts and nuts.

5. The high-strength, lightweight, prefabricated balcony according to claim 4, characterized in that: Both clamping plates have notches on their outer circumferential edges for the insertion of the bolt shank.

6. The high-strength, lightweight, prefabricated balcony according to claim 5, characterized in that: The notch is elongated, and a stepped hole is provided at one end of the notch away from the outer edge of the corresponding clamping plate. The size of the hole at the end of the stepped hole facing away from the clamping groove is larger than the size of the hole at the other end and the width of the notch. An outer flange is provided at the end of the nut adjacent to the head of the bolt. Both the outer flange and the head of the bolt are adapted to the opening of the stepped hole at the end of the clamping groove.

7. The high-strength, lightweight, prefabricated balcony according to any one of claims 1-6, characterized in that: The wall reinforcement frame also includes hollow weight-reducing shells, which are disposed at both ends of the second wall reinforcement bars and there are four of them, two of which extend along the length of the first balcony reinforcement bars and the remaining two extend along the length of the second balcony reinforcement bars.

8. The high-strength, lightweight, prefabricated balcony according to claim 7, characterized in that: The weight-reducing shell includes telescopic shells distributed along its own length and sequentially inserted and fitted together. The telescopic shells are hollow, and each end of the telescopic shell is provided with a matching insertion protrusion and insertion recess.

9. The high-strength, lightweight, prefabricated balcony according to claim 8, characterized in that: The telescopic shell includes an outer barrel and an inner barrel distributed along the length of the weight-reducing shell. The circumferential inner wall of the outer barrel is sealed to the circumferential outer edge of the inner barrel, and the open sides face opposite directions.

10. The high-strength, lightweight, prefabricated balcony according to claim 9, characterized in that: The insertion protrusion and the insertion recess are respectively provided on the inner insertion barrel and the outer insertion barrel. The insertion protrusion is also provided with a balance through hole communicating with its own inner cavity. The outer insertion barrel is provided with a sleeve hole that is isolated from its own inner cavity. The sleeve hole is fitted onto the outside of the end of the second wall reinforcement.

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