Cantilever beam prefabricated structure

Abstract

The utility model discloses a cantilever beam prefabricated structure, and relates to the technical field of building construction. The device comprises a concrete wall, a main steel beam and an auxiliary steel beam are pre-buried in the concrete wall, a connecting hole is formed in one end of the main steel beam, one end of the auxiliary steel beam penetrates through the connecting hole, and one ends of the main steel beam and the auxiliary steel beam both extend to the outer side of the concrete wall and are fixedly connected with a pair of fixed threaded rods. The auxiliary steel beam penetrates through the connecting hole in one end of the main steel beam, so that one end of the auxiliary steel beam and the main steel beam form a Z-shaped supporting structure to be fixed in the concrete wall, and the connecting strength between the auxiliary steel beam and the concrete wall is improved; and the I-shaped cantilever steel beam is fixed at one end of the main steel beam and one end of the auxiliary steel beam, so that the influence of indoor construction on the mounting stability of the main steel beam and the auxiliary steel beam is reduced, and meanwhile, the mounting stability of the I-shaped cantilever steel beam is improved.

Description

Technical Field

[0001] The present application relates to the field of building construction technology, and in particular to a cantilever beam prefabricated structure. Background Art

[0002] Cantilever is a professional term in construction, which refers to an effect achieved by using cable structures or other structures in building components. Cantilever structure is one of the common structural forms in engineering structures, such as awnings, eaves, external balconies, and corridors in construction projects. This structure is a cantilever structure formed by cantilevering beams or plates from the main structure, which is still a beam-slab structure in essence.

[0003] The cantilever beam fixing device mentioned in the existing Chinese public patent authorization announcement number: CN205617779U relates to the field of building auxiliary equipment, including studs, a pressure plate, and a bottom plate. One end of the studs penetrates the concrete slab and is connected to the bottom plate located on the lower surface of the concrete slab, and the other end is connected to the pressure plate. The cantilever beam is placed in a frame formed between the upper surface of the concrete slab, the lower surface of the pressure plate, and the studs. Two studs are arranged on both sides of the cantilever beam, and a limit plate is arranged between the studs on the same side. A through hole is arranged on the limit plate, and a limit bolt is arranged in the through hole. The limit bolt penetrates and connects the cantilever beam and the limit plates on both sides. By adding a limit plate, the cantilever beam is fixed horizontally, and the limit plate and the cantilever beam are in surface contact, so that the fixation is more firm; by adding a limit bolt on the limit plate, the limit plate and the cantilever beam are further firmly connected, so that a set of devices can simultaneously fix the cantilever beam horizontally and vertically, simplifying the structure of the fixing device.

[0004] However, one end of the cantilever beam generally needs to be extended into the building for fixation. When construction needs to be carried out indoors, it is easy to collide with the cantilever beam. Too many collisions may cause the cantilever beam and the stud bolts to loosen, thereby affecting the stability of the cantilever beam. Utility Model Content

[0005] The purpose of the present application is to provide a cantilever beam prefabricated structure to solve the problem that when indoor construction is required, the cantilever beam is easily collided with, which may cause looseness between the cantilever beam and the stud bolts, thereby affecting the stability of the cantilever beam.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A cantilever beam prefabricated structure includes a concrete wall, wherein a main steel beam and an auxiliary steel beam are pre-buried inside the concrete wall, a connecting hole is opened at one end of the main steel beam, and one end of the auxiliary steel beam passes through the connecting hole, one end of the main steel beam and the auxiliary steel beam both extend to the outside of the concrete wall and are fixedly connected with a pair of fixed threaded rods, an I-shaped cantilever steel beam is installed on the outside of the concrete wall, one end of the I-shaped cantilever steel beam is symmetrically fixedly connected with a fixed connecting ear, one end of the fixed threaded rod passes through the fixed connecting ear and is threadedly connected with a fixing nut.

[0008] By adopting the above technical solution, the auxiliary steel beam is passed through the connecting hole at one end of the main steel beam, so that one end of the auxiliary steel beam and the main steel beam form a Z-shaped support structure fixed inside the concrete wall, so as to improve the connection strength between the fixing nut and the auxiliary steel beam and the concrete wall, and then the threaded rod and the fixing nut are used in coordination to fix the I-shaped cantilever steel beam to one end of the main steel beam and the auxiliary steel beam, thereby reducing the impact of indoor construction on the installation stability of the main steel beam and the auxiliary steel beam, and at the same time improving the installation stability of the I-shaped cantilever steel beam.

[0009] Furthermore, a gasket is sleeved on one end of the fixed threaded rod, the gasket is installed between the fixed connection ear and the fixed nut, and friction patterns are provided on both sides of the gasket.

[0010] By adopting the above technical solution, the connection stability between the gasket and the I-shaped cantilever steel beam is increased by setting the fixing nut and the fixed connecting ear and the gasket, and the possibility of loosening of the fixing nut is effectively reduced.

[0011] Furthermore, one end of the auxiliary steel beam is fixedly connected to a reinforcing plate, and the reinforcing plate is installed on the outside of the concrete wall.

[0012] By adopting the above technical solution, the supporting area of ​​the concrete wall for the auxiliary steel beam is increased by arranging the reinforcing plate, thereby increasing the stability of the device.

[0013] Furthermore, one end of the I-shaped cantilever steel beam away from the concrete wall is slidably connected to a U-shaped adjusting beam, both ends of the U-shaped adjusting beam are provided with a plurality of adjusting holes that match each other, one end of the I-shaped cantilever steel beam is provided with a fixing hole that matches the adjusting hole, one end of the U-shaped adjusting beam is installed with an adjusting bolt, one end of the adjusting bolt passes through the adjusting hole and the fixing hole in sequence, and is threadedly connected with an adjusting nut.

[0014] By adopting the above technical scheme, the U-shaped adjusting beam is moved along the length direction of the I-shaped cantilever steel beam to increase the extended length of the U-shaped adjusting beam, and then the U-shaped adjusting beam is fixed to one end of the I-shaped cantilever steel beam by using the adjusting bolt and the adjusting nut in combination, so that the supporting length of the I-shaped cantilever steel beam can be extended by adjusting the relative position of the U-shaped adjusting beam and the I-shaped cantilever steel beam, thereby improving the practicability of the device.

[0015] Furthermore, a reinforcing rod is installed at the bottom of the U-shaped adjusting beam, and the reinforcing rod includes a threaded sleeve rod hinged at the bottom of the U-shaped adjusting beam, the internal thread of the threaded sleeve rod is connected to a threaded inner rod, and a connecting assembly is installed on one side of the reinforcing plate.

[0016] By adopting the above technical solution, firstly, the threaded inner rod is rotated to adjust the threaded sleeve rod and the threaded inner rod to the required length, and then the threaded inner rod is connected and fixed to one side of the reinforcing plate by tightening the connecting assembly, so that a triangular stable supporting structure is formed between the reinforcing rod and the I-shaped cantilever steel beam, the reinforcing plate, and the U-shaped adjusting beam, thereby improving the supporting strength of the U-shaped adjusting beam.

[0017] Furthermore, the connecting assembly includes a supporting ear symmetrically fixedly connected to one side of the reinforcing plate, one end of the threaded inner rod is rotatably connected to a connecting rod, the connecting rod is installed between the two reinforcing plates, and one end of the connecting rod is provided with a through hole, a connecting bolt is installed at one end of the reinforcing plate, one end of the connecting bolt passes through the supporting ear and the connecting rod in sequence, and is threadedly connected with a connecting nut.

[0018] By adopting the above technical solution, the connecting rod is moved between the two supporting ears, and the connecting rod is rotated so that the through hole is aligned with the supporting ear. Then, the connecting rod is fixed between the two supporting ears by using a connecting bolt and a connecting nut, thereby completing the fixation of one end of the threaded inner rod.

[0019] Furthermore, a hook adapted to the reinforcing rod is fixedly connected to the bottom of the I-shaped cantilever steel beam, a snap-in slide rail is provided on one side of the hook, an incomplete sleeve plate is slidably connected inside the snap-in slide rail, and a snap-in assembly is installed inside the snap-in slide rail.

[0020] By adopting the above technical solution, the reinforcing rod is embedded in the interior of the hook by manually pulling, and then the incomplete sleeve is rotated so that one end of the incomplete sleeve extends out of the card-connecting slide rail and covers the opening of the hook. At the same time, after the card-connecting assembly is subjected to force, the incomplete sleeve is card-connected to the interior of the card-connecting slide rail, thereby completing the storage of the reinforcing rod.

[0021] Furthermore, the clamping assembly includes an elastic clamping block fixedly connected to one side of the inner part of the clamping slide rail, and a clamping groove adapted to the elastic clamping block is formed on one side of the incomplete sleeve.

[0022] By adopting the above technical solution, by rotating the incomplete sleeve, one end of the incomplete sleeve drives the slot to move to the top entrance of the snap-in slide rail, and the elastic block is embedded in the slot, and at the same time the incomplete sleeve is snap-connected to the inside of the snap-in slide rail, so that the incomplete sleeve forms a fixed wrap around one end of the hook.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By passing the auxiliary steel beam through the connection hole at one end of the main steel beam, one end of the auxiliary steel beam and the main steel beam form a Z-shaped support structure fixed inside the concrete wall to improve the connection strength between the auxiliary steel beam and the concrete wall. Then, the threaded rod and the fixing nut are used in conjunction to fix the I-shaped cantilever steel beam to one end of the main steel beam and the auxiliary steel beam, thereby reducing the impact of indoor construction on the installation stability of the main steel beam and the auxiliary steel beam, and at the same time improving the stability of the installation of the I-shaped cantilever steel beam.

[0025] 2. Move the U-shaped adjusting beam along the length direction of the I-shaped cantilever steel beam to increase the extended length of the U-shaped adjusting beam, and then fix the U-shaped adjusting beam to one end of the I-shaped cantilever steel beam by using the adjusting bolt and the adjusting nut. In this way, the supporting length of the I-shaped cantilever steel beam can be extended by adjusting the relative position of the U-shaped adjusting beam and the I-shaped cantilever steel beam, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is a three-dimensional structural schematic diagram of the main steel beam and the auxiliary steel beam in this application.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the reinforcing rod in this application.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the connection components in this application.

[0030] Figure 5 This is an exploded view of the internal structure of the incomplete set of panels in this application

[0031] Description of reference numerals:

[0032] 1. Concrete wall; 2. Main steel beam; 3. Auxiliary steel beam; 4. Fixed threaded rod; 5. I-shaped cantilever steel beam; 6. Fixed connecting ear; 7. Gasket; 8. Reinforcement plate; 9. U-shaped adjustment beam; 10. Adjustment hole; 11. Fixing hole; 12. Adjustment bolt; 13. Adjustment nut; 14. Reinforcement rod; 15. Connection assembly; 16. Hook; 17. Snap-on slide rail; 18. Incomplete sleeve; 19. Snap-on assembly; 20. Fixed nut; 141. Threaded sleeve rod; 142. Threaded inner rod; 151. Support ear; 152. Connecting rod; 153. Connecting bolt; 154. Connecting nut; 191. Elastic block; 192. Slot. DETAILED DESCRIPTION

[0033] The following is combined with Figures 1 to 5 This application is described in further detail.

[0034] The embodiment of the present application discloses a cantilever beam prefabricated structure.

[0035] Reference Figure 1 and Figure 2 A cantilever beam prefabricated structure includes a concrete wall 1, a main steel beam 2 and an auxiliary steel beam 3 are pre-buried inside the concrete wall 1, a connecting hole is opened at one end of the main steel beam 2, one end of the auxiliary steel beam 3 passes through the connecting hole, one end of the main steel beam 2 and the auxiliary steel beam 3 both extend to the outside of the concrete wall 1, and are fixedly connected with a pair of fixed threaded rods 4, an I-shaped cantilever steel beam 5 is installed on the outside of the concrete wall 1, one end of the I-shaped cantilever steel beam 5 is symmetrically fixedly connected with a fixed connecting ear 6, one end of the fixed threaded rod 4 passes through the fixed connecting ear 6, and is threadedly connected with a fixing nut 20. First, the auxiliary steel beam 3 is passed through the connecting hole at one end of the main steel beam 2, and then the main steel beam 2 and the auxiliary steel beam 3 are cast inside the concrete wall 1, so that one end of the auxiliary steel beam 3 and the main steel beam 2 form a Z-shaped support structure fixed inside the concrete wall 1, and the fixing threaded rod 4 at one end of the main steel beam 2 and the auxiliary steel beam 3 extends outside the concrete wall 1, and then one end of the fixing threaded rod 4 is passed through the fixing connecting ear 6, and the fixing nut 20 is tightened to form a fixed connection between the I-shaped cantilever steel beam 5 and the main steel beam 2 and the auxiliary steel beam 3, thereby reducing the influence of indoor construction on the installation stability of the main steel beam 2 and the auxiliary steel beam 3, and at the same time improving the installation stability of the I-shaped cantilever steel beam 5.

[0036] Reference Figure 1 and Figure 2 One end of the fixed threaded rod 4 is sleeved with a gasket 7, which is installed between the fixed connection ear 6 and the fixed nut 20, and friction patterns are provided on both sides of the gasket 7. By tightening the fixed nut 20, the fixed nut 20 and the fixed connection ear 6 are closely attached to the two sides of the gasket 7, and the use of the friction patterns effectively reduces the possibility of loosening of the fixed nut 20.

[0037] Reference Figure 1 and Figure 2 One end of the auxiliary steel beam 3 is fixedly connected with a reinforcing plate 8, and the reinforcing plate 8 is installed on the outside of the concrete wall 1. By providing the reinforcing plate 8, an L-shaped supporting surface is formed between the auxiliary steel beam 3 and the reinforcing plate 8, which increases the supporting area of ​​the concrete wall 1 on the auxiliary steel beam 3 and increases the stability of the device.

[0038] Reference Figure 2 and Figure 3 The end of the I-shaped cantilever steel beam 5 away from the concrete wall 1 is slidably connected with a U-shaped adjusting beam 9, and a plurality of adjusting holes 10 adapted to each other are opened at both ends of the U-shaped adjusting beam 9, and a fixing hole 11 adapted to the adjusting hole 10 is opened at one end of the I-shaped cantilever steel beam 5, and an adjusting bolt 12 is installed at one end of the U-shaped adjusting beam 9, and one end of the adjusting bolt 12 passes through the adjusting hole 10 and the fixing hole 11 in sequence, and is threadedly connected with an adjusting nut 13. When it is necessary to extend the support length of the I-shaped cantilever steel beam 5, the U-shaped adjusting beam 9 is moved to the desired position along the length direction of the I-shaped cantilever steel beam 5 in the direction away from the concrete wall 1, and the adjusting hole 10 is aligned with the corresponding fixing hole 11, and then one end of the adjusting bolt 12 is passed through the adjusting hole 10 and the fixing hole 11, and then the adjusting nut 13 is tightened to fix the U-shaped adjusting beam 9, so that the support length of the I-shaped cantilever steel beam 5 can be extended by adjusting the relative position of the U-shaped adjusting beam 9 and the I-shaped cantilever steel beam 5, thereby improving the practicality of the device.

[0039] Reference Figure 2 and Figure 3 A reinforcing rod 14 is installed at the bottom of the U-shaped adjusting beam 9. The reinforcing rod 14 includes a threaded sleeve rod 141 hinged at the bottom of the U-shaped adjusting beam 9. The internal thread of the threaded sleeve rod 141 is connected with a threaded inner rod 142. A connecting assembly 15 is installed on one side of the reinforcing plate 8. By rotating the threaded inner rod 142, one end of the threaded inner rod 142 is driven to extend out of the inside of the threaded sleeve rod 141, and then the threaded sleeve rod 141 is rotated around the hinge axis, the threaded inner rod 142 is driven to conflict with one side of the reinforcing plate 8, and then the connecting assembly 15 is tightened to fix the threaded inner rod 142 with one side of the reinforcing plate 8, so that a triangular stable supporting structure is formed between the reinforcing rod 14 and the I-shaped cantilever steel beam 5, the reinforcing plate 8, and the U-shaped adjusting beam 9, thereby improving the supporting strength of the U-shaped adjusting beam 9.

[0040] Reference Figure 2 and Figure 4The connection assembly 15 includes a support ear 151 symmetrically fixedly connected to one side of the reinforcing plate 8, one end of the threaded inner rod 142 is rotatably connected to the connecting rod 152, the connecting rod 152 is installed between the two reinforcing plates 8, and one end of the connecting rod 152 is provided with a through hole, and one end of the reinforcing plate 8 is installed with a connecting bolt 153, one end of the connecting bolt 153 passes through the support ear 151 and the connecting rod 152 in sequence, and is threadedly connected with a connecting nut 154. The threaded inner rod 142 is pulled to drive the connecting rod 152 to move between the two supporting ears 151, and then one end of the connecting bolt 153 passes through the through holes of the supporting ear 151 and the connecting rod 152 in sequence, and then the connecting nut 154 is tightened, thereby completing the fixation of one end of the threaded inner rod 142.

[0041] Reference Figure 2 and Figure 5 The bottom of the I-shaped cantilever steel beam 5 is fixedly connected with a hook 16 adapted to the reinforcing rod 14, and a clamping slide rail 17 is provided on one side of the hook 16. An incomplete sleeve 18 is slidably connected inside the clamping slide rail 17, and a clamping assembly 19 is installed inside the clamping slide rail 17. When the U-shaped adjustment beam 9 does not need to be extended, the reinforcing rod 14 can be pulled to rotate around the hinge axis and embedded in the hook 16, and then the incomplete sleeve 18 is manually rotated along the inner wall of the clamping slide rail 17, so that one end of the incomplete sleeve 18 extends from the bottom outlet of the clamping slide rail 17 and then is embedded in the top inlet of the clamping slide rail 17, and at the same time, the clamping assembly 19 is driven to clamp the incomplete sleeve 18 inside the clamping slide rail 17, and the incomplete sleeve 18 traps the reinforcing rod 14 inside the hook 16, so that the reinforcing rod 14 can be stored and the shaking of the reinforcing rod 14 can be reduced.

[0042] Reference Figure 2 and Figure 5 The clamping assembly 19 includes an elastic clamping block 191 fixedly connected to one side of the inner part of the clamping slide rail 17, and a clamping groove 192 adapted to the elastic clamping block 191 is provided on one side of the incomplete sleeve 18. When one end of the incomplete sleeve 18 is inserted into the top entrance of the clamping slide rail 17, the elastic clamping block 191 is deformed and contracted by the squeezing force of the incomplete sleeve 18, and then when the clamping groove 192 is aligned with the elastic clamping block 191, the elastic clamping block 191 is relieved of the force and is inserted into the inner part of the clamping groove 192, so that the incomplete sleeve 18 is clamped into the inner part of the clamping slide rail 17, and at the same time, the incomplete sleeve 18 wraps one end of the hook 16;

[0043] Similarly, when it is necessary to release the connection between the incomplete sleeve 18 and the locking slide rail 17, the incomplete sleeve 18 is rotated in the same direction so that the incomplete sleeve 18 squeezes the elastic block 191 along the inner wall of the locking slide rail 17, so that the elastic block 191 is forced to shrink and disengage from the inside of the slot 192, and the connection with the incomplete sleeve 18 is released, so as to facilitate the removal of the reinforcing rod 14.

[0044] The implementation principle of a cantilever beam prefabricated structure of the present embodiment is as follows: first, the auxiliary steel beam 3 is passed through the connection hole at one end of the main steel beam 2, so that one end of the auxiliary steel beam 3 and the main steel beam 2 form a Z-shaped support structure fixed inside the concrete wall 1, so as to improve the connection strength between the auxiliary steel beam 3 and the concrete wall 1, and then the threaded rod 4 and the fixing nut 20 are used in combination to fix the I-shaped cantilever steel beam 5 to one end of the main steel beam 2 and the auxiliary steel beam 3, thereby reducing the impact of indoor construction on the installation stability of the main steel beam 2 and the auxiliary steel beam 3, and by providing a reinforcing plate 8, an L-shaped support surface is formed between the auxiliary steel beam 3 and the reinforcing plate 8, thereby increasing the support area of ​​the concrete wall 1 for the auxiliary steel beam 3;

[0045] When it is necessary to extend the support length of the I-shaped cantilever steel beam 5, the U-shaped adjusting beam 9 is moved to the desired position along the length direction of the I-shaped cantilever steel beam 5 in the direction away from the concrete wall 1, and the adjusting hole 10 is aligned with the corresponding fixing hole 11, and then one end of the adjusting bolt 12 is passed through the adjusting hole 10 and the fixing hole 11, and then the adjusting nut 13 is tightened to fix the U-shaped adjusting beam 9, so that the support length of the I-shaped cantilever steel beam 5 can be extended by adjusting the relative position of the U-shaped adjusting beam 9 and the I-shaped cantilever steel beam 5;

[0046] Then, by rotating the threaded inner rod 142, the threaded sleeve rod 141 and the threaded inner rod 142 are adjusted to the desired length, and then the threaded inner rod 142 is connected and fixed to one side of the reinforcing plate 8 by tightening the connecting assembly 15, so that a triangular stable supporting structure is formed between the reinforcing rod 14 and the I-shaped cantilever steel beam 5, the reinforcing plate 8, and the U-shaped adjusting beam 9, thereby improving the supporting strength of the U-shaped adjusting beam 9.

Claims

1. A cantilever beam prefabricated structure, comprising a concrete wall (1), characterized in that: A main steel beam (2) and an auxiliary steel beam (3) are pre-buried inside the concrete wall (1); a connection hole is provided at one end of the main steel beam (2); one end of the auxiliary steel beam (3) passes through the connection hole; one end of each of the main steel beam (2) and the auxiliary steel beam (3) extends to the outside of the concrete wall (1) and is fixedly connected to a pair of fixed threaded rods (4); an I-shaped cantilever steel beam (5) is installed on the outside of the concrete wall (1); one end of the I-shaped cantilever steel beam (5) is symmetrically fixedly connected to a fixed connection ear (6); one end of the fixed threaded rod (4) passes through the fixed connection ear (6) and is threadedly connected to a fixed nut (20).

2. The cantilever beam prefabricated structure according to claim 1, characterized in that: A gasket (7) is sleeved on one end of the fixed threaded rod (4), the gasket (7) is installed between the fixed connection ear (6) and the fixed nut (20), and friction patterns are provided on both sides of the gasket (7).

3. The cantilever beam prefabricated structure according to claim 1, characterized in that: One end of the auxiliary steel beam (3) is fixedly connected to a reinforcing plate (8), and the reinforcing plate (8) is installed on the outside of the concrete wall (1).

4. The cantilever beam prefabricated structure according to claim 3 is characterized in that: One end of the I-shaped cantilever steel beam (5) away from the concrete wall (1) is slidably connected to a U-shaped adjusting beam (9), both ends of the U-shaped adjusting beam (9) are provided with a plurality of adjusting holes (10) that match each other, one end of the I-shaped cantilever steel beam (5) is provided with a fixing hole (11) that matches the adjusting hole (10), one end of the U-shaped adjusting beam (9) is mounted with an adjusting bolt (12), one end of the adjusting bolt (12) passes through the adjusting hole (10) and the fixing hole (11) in sequence, and is threadedly connected to an adjusting nut (13).

5. The cantilever beam prefabricated structure according to claim 4, characterized in that: A reinforcing rod (14) is installed at the bottom of the U-shaped adjusting beam (9), the reinforcing rod (14) comprising a threaded sleeve rod (141) hinged at the bottom of the U-shaped adjusting beam (9), the internal threads of the threaded sleeve rod (141) being connected to a threaded inner rod (142), and a connecting assembly (15) is installed on one side of the reinforcing plate (8).

6. The cantilever beam prefabricated structure according to claim 5, characterized in that: The connecting assembly (15) comprises a supporting ear (151) symmetrically fixedly connected to one side of the reinforcing plate (8); one end of the threaded inner rod (142) is rotatably connected to a connecting rod (152); the connecting rod (152) is installed between the two reinforcing plates (8); one end of the connecting rod (152) is provided with a through hole; one end of the reinforcing plate (8) is provided with a connecting bolt (153); one end of the connecting bolt (153) passes through the supporting ear (151) and the connecting rod (152) in sequence, and is threadedly connected to a connecting nut (154).

7. The cantilever beam prefabricated structure according to claim 1, characterized in that: A hook (16) adapted to the reinforcing rod (14) is fixedly connected to the bottom of the I-shaped cantilever steel beam (5); a snap-in slide rail (17) is provided on one side of the hook (16); an incomplete sleeve plate (18) is slidably connected to the interior of the snap-in slide rail (17); and a snap-in assembly (19) is installed inside the snap-in slide rail (17).

8. The cantilever beam prefabricated structure according to claim 7, characterized in that: The clamping assembly (19) comprises an elastic clamping block (191) fixedly connected to one side of the inside of the clamping slide rail (17); one side of the incomplete sleeve plate (18) is provided with a clamping groove (192) adapted to the elastic clamping block (191).

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