High-rise housing facade unsupported cantilever plate construction method and cantilever frame

Abstract

The invention relates to a high-rise housing facade support-free cantilever plate construction method and a cantilever frame, and belongs to the technical field of cantilever plate construction.The method comprises the steps that S1, surveying and setting out are conducted to determine the position of a cantilever plate; s2, a full framing is erected; s3, erecting an overhanging scaffold of a triangular structure, and connecting the overhanging scaffold with the full framing to form an integral structure; and S4, a formwork is laid at the preset position of the cantilever plate, and steel bar construction is conducted in the formwork till concrete is poured. The construction method has the advantages that the quality problem and the safety problem existing in a traditional construction method can be solved, and the bearing capacity of the cantilever plate and the safety in the construction process are improved.

Description

Technical Field

[0001] The present application relates to the technical field of cantilever slab construction, and in particular to a method for constructing an unsupported cantilever slab on the facade of a high-rise residential building and a cantilever frame. Background Art

[0002] As a common structural form, cantilever panels on the facades of high-rise residential buildings not only reduce the building's deadweight, shorten the construction period, and improve construction efficiency, but also have the characteristics of beauty and practicality. They are widely used in eaves, awnings, air-conditioning panels and other parts.

[0003] Reference Figure 1 The existing construction methods of cantilever panels on the facades of high-rise residential buildings include: when supporting the main floor slab full-frame, the cantilevered end of the horizontal pipe of the full-frame is used as the keel of the cantilever panel, and a diagonal brace is added at the lower end of the cantilever panel.

[0004] However, the above-mentioned related technologies have the following problems: the support frame of the cantilever plate has poor stability, and the cantilever plate is prone to deflection after being formed, thereby breaking at the plate end support, which will cause certain quality problems and safety hazards. Summary of the invention

[0005] In order to solve the quality and safety problems existing in traditional construction methods and improve the load-bearing capacity of cantilever slabs and the safety during the construction process, the present application provides a construction method and cantilever frame for an unsupported cantilever slab on the facade of a high-rise residential building.

[0006] In a first aspect, the present application provides a method for constructing an unsupported cantilever slab on a high-rise residential building facade, comprising the following steps: S1: Measure and lay out to determine the position of the cantilever plate; S2: Set up the full-hall frame; S3: Erect a triangular cantilevered scaffolding and connect it with the full-height frame to form an integral structure; S4: Lay the formwork at the predetermined location of the cantilever slab and carry out reinforcement construction inside the formwork until the concrete is poured.

[0007] By adopting the above technical scheme, the cantilever scaffolding with a triangular structure can ensure the stability of the cantilever scaffolding, and because the cantilever scaffolding is firmly connected to the full frame to form an integral structure, this connection method can not only ensure the stability of the cantilever scaffolding, but also effectively transfer the load to the full frame, thereby improving the load-bearing capacity of the cantilever board and the safety during construction.

[0008] Preferably, the longitudinal spacing of the cantilever scaffolding does not exceed one meter. If the spacing between the risers of the full-frame scaffolding is greater than one meter, additional risers are added to ensure the integrity of the full-frame scaffolding.

[0009] By adopting the above technical solution, a tight connection between the cantilever scaffolding and the full-height frame is achieved.

[0010] In the second aspect, the present application provides a cantilever frame, which is used in the above-mentioned method for constructing an unsupported cantilever panel on the facade of a high-rise residential building, and includes a transverse steel pipe and an oblique steel pipe with a connection hole opened after flattening at one end, and a vertical steel pipe connected to the transverse steel pipe and the oblique steel pipe, the flat end of the transverse steel pipe and the flat end of the oblique steel pipe are connected by a fixing part, and the transverse steel pipe, the oblique steel pipe and the vertical steel pipe are connected by a connecting assembly so that the transverse steel pipe, the oblique steel pipe and the vertical steel pipe form a cantilever scaffolding with a triangular structure, and the cantilever scaffolding with a triangular structure is used to support the cantilever panel, and the bottom end of the cantilever scaffolding is supported on a pad on the bottom surface of the full-frame.

[0011] By adopting the above technical solution, the flat end of the horizontal steel pipe and the flat end of the oblique steel pipe are connected by fixing parts, and then the horizontal steel pipe, the oblique steel pipe and the vertical steel pipe are connected by connecting components, so that the horizontal steel pipe, the oblique steel pipe and the vertical steel pipe form a cantilever scaffolding with a triangular structure. The cantilever scaffolding with a triangular structure is used to support the cantilever board, which can not only ensure that the cantilever board does not sag downward, but also improve the load-bearing capacity and stability of the cantilever board.

[0012] Preferably, the transverse steel pipe is placed together with the horizontal pipe on the upper part of the full-frame to form a double steel pipe, and is connected by no less than three rotating fasteners, and the transverse steel pipe extends into the frame of the full-frame for no less than three spans, and the transverse steel pipe is tightly connected to the vertical pipe of the full-frame through right-angle fasteners.

[0013] By adopting the above technical solution, the transverse steel pipe is connected to the vertical pipe of the full frame through the right-angle fastener, and the transverse steel pipe is connected to the horizontal pipe of the full frame through the rotating fastener, thereby achieving a stable connection between the cantilever scaffolding and the full frame to form an integral structure. This connection method can not only ensure the stability of the cantilever scaffolding, but also effectively transfer the load to the full frame.

[0014] Preferably, the vertical steel pipe and the riser of the full-frame are placed side by side to form a double steel pipe, and are connected by no less than three rotating fasteners. The vertical steel pipe is tightly connected to the horizontal pipe of the full-frame through right-angle fasteners.

[0015] By adopting the above technical scheme, the vertical steel pipe is connected to the vertical pipe of the full frame through the rotating fastener, and the vertical steel pipe is connected to the horizontal pipe of the full frame through the right-angle fastener, thereby realizing a stable connection between the cantilever scaffolding and the full frame to form an integral structure. This connection method can not only ensure the stability of the cantilever scaffolding, but also effectively transfer the load to the full frame.

[0016] Preferably, the oblique steel pipe is tightly connected to the vertical pipe of the full-frame through a rotating fastener.

[0017] By adopting the above technical solution, the inclined steel pipe is connected to the vertical pipe through the rotating fastener, so as to achieve a stable connection between the cantilever scaffolding and the full frame to form an integral structure. This connection method can not only ensure the stability of the cantilever scaffolding, but also effectively transfer the load to the full frame.

[0018] Preferably, the flat end of the transverse steel pipe and the flat end of the oblique steel pipe are offset and fit together front to back, and the fixing piece passes through two connected connecting holes to fix the flat end of the transverse steel pipe and the flat end of the oblique steel pipe.

[0019] By adopting the above technical solution, the two flat ends are fitted together front and back, and the fixing piece passes through the two connected connecting holes to more firmly fix the flat end of the horizontal steel pipe and the flat end of the oblique steel pipe together.

[0020] Preferably, the bottom end of the vertical steel pipe is supported on the top surface of the pad of the full frame, and the bottom end of the inclined steel pipe is supported on the top surface of the pad of the full frame.

[0021] By adopting the above technical solution, the bottom end of the vertical steel pipe abuts against the pad of the full frame, and the bottom end of the oblique steel pipe abuts against the pad of the full frame, thereby ensuring the stability of the cantilever scaffolding.

[0022] Preferably, the connecting assembly includes two fixed connecting sleeves rotatably connected by a connecting shaft, two movable connecting sleeves respectively hinged on the sides of the two fixed connecting sleeves away from each other, and a locking member arranged on each fixed connecting sleeve for locking the movable connecting sleeve on the fixed connecting sleeve. When the fixed connecting sleeve and the movable connecting sleeve are buckled with each other, a clamping space is formed between the fixed connecting sleeve and the movable connecting sleeve, and the clamping space matches the oblique steel pipe, the horizontal steel pipe and the vertical steel pipe.

[0023] By adopting the above technical scheme, when it is necessary to complete the connection between the oblique steel pipe and the vertical steel pipe, the fixed connecting sleeve and the movable connecting sleeve are buckled together so that the two clamping spaces are respectively clamped in the oblique steel pipe and the vertical steel pipe, and then the movable connecting sleeve is locked on the fixed connecting sleeve through the locking piece, thereby completing the connection between the oblique steel pipe and the vertical steel pipe; when it is necessary to complete the connection between the transverse steel pipe and the vertical steel pipe, the fixed connecting sleeve and the movable connecting sleeve are buckled together so that the two clamping spaces are respectively clamped in the transverse steel pipe and the vertical steel pipe, and then the movable connecting sleeve is locked on the fixed connecting sleeve through the locking piece, thereby completing the connection between the transverse steel pipe and the vertical steel pipe.

[0024] Preferably, a clearance opening is provided at one end of the movable connecting sleeve away from the hinge where it is located, and the locking member includes a threaded rod hinged on the fixed connecting sleeve and corresponding to the position of the clearance opening and a nut threadedly connected to the threaded rod. The threaded rod is buckled into the clearance opening, and the movable connecting sleeve is locked on the movable connecting sleeve by the nut.

[0025] By adopting the above technical solution, the threaded rod is buckled into the clearance opening and the locking nut is tightened to lock the movable connection sleeve on the fixed connection sleeve. This connection method is not only simple, but also can ensure the stable connection between the vertical steel pipe and the oblique steel pipe and between the vertical steel pipe and the horizontal steel pipe, meeting the use requirements of the cantilever scaffolding.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The triangular structure of the cantilever scaffolding can ensure the stability of the cantilever scaffolding, and because the cantilever scaffolding is firmly connected with the full frame to form an integral structure, this connection method can not only ensure the stability of the cantilever scaffolding, but also effectively transfer the load to the full frame, thereby improving the load-bearing capacity of the cantilever board and the safety during the construction process; 2. Connect the flat ends of the horizontal steel pipes and the flat ends of the oblique steel pipes through fixings, and then connect the horizontal steel pipes, the oblique steel pipes and the vertical steel pipes through connecting components, so that the horizontal steel pipes, the oblique steel pipes and the vertical steel pipes form a triangular cantilever scaffolding. The triangular cantilever scaffolding is used to support the cantilever plate, which can not only ensure that the cantilever plate does not deflect downward, but also improve the load-bearing capacity and stability of the cantilever plate; 3. When it is necessary to complete the connection between the oblique steel pipe and the vertical steel pipe, the fixed connecting sleeve and the movable connecting sleeve are buckled together so that the two clamping spaces are respectively clamped in the oblique steel pipe and the vertical steel pipe, and then the movable connecting sleeve is locked on the fixed connecting sleeve through the locking piece, thereby completing the connection between the oblique steel pipe and the vertical steel pipe; when it is necessary to complete the connection between the transverse steel pipe and the vertical steel pipe, the fixed connecting sleeve and the movable connecting sleeve are buckled together so that the two clamping spaces are respectively clamped in the transverse steel pipe and the vertical steel pipe, and then the movable connecting sleeve is locked on the fixed connecting sleeve through the locking piece, thereby completing the connection between the transverse steel pipe and the vertical steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the background technology of this application.

[0028] Figure 2 It is a schematic diagram of the overall structure of this application.

[0029] Figure 3 It is a structural schematic diagram of the vertical pipes and horizontal pipes of the cantilever scaffolding and the full-height frame of the present application.

[0030] Figure 4 yes Figure 3 A partial enlarged view of part A.

[0031] Figure 5 yes Figure 3 A partial enlarged view of part B.

[0032] Figure 6 It is a schematic diagram of the structure of the connection component of the present application.

[0033] Explanation of the reference numerals in the accompanying drawings: 1. horizontal steel pipe; 2. vertical steel pipe; 3. oblique steel pipe; 31. flat end; 32. fixing piece; 4. horizontal pipe; 5. vertical pipe; 51. pad; 6. rotating fastener; 7. right-angle fastener; 8. fixed connecting sleeve; 81. first connecting plate; 82. threaded rod; 83. locking nut; 9. dynamic connecting sleeve; 91. second connecting plate; 92. clearance opening. DETAILED DESCRIPTION

[0034] The following is combined with Figure 2-6 This application is described in further detail.

[0035] The present application embodiment discloses a method for constructing an unsupported cantilever slab on the facade of a high-rise residential building. Figure 2 and Figure 3 The construction method of the unsupported cantilever slab on the facade of a high-rise residential building includes the following steps: S1: Measure and lay out to determine the specific location of the cantilever slab.

[0036] Total stations are usually used for precise layout, which can not only improve measurement accuracy, but also improve work efficiency in complex environments. In addition, laser rangefinders and other equipment can also be used to assist in layout; through this, the accuracy of the cantilever plate position can be ensured.

[0037] S2: Set up the full-hall frame.

[0038] When erecting a full-span frame, the layout of the full-span frame needs to be determined according to the structural layout of the building; during the erection process, the spacing between the risers 5 of the full-span frame should not be greater than one meter to ensure the stability of the overall structure; in actual construction, if the spacing between the risers 5 is too wide, the integrity of the full-span frame can be ensured by increasing the number of risers 5.

[0039] S3: Erect a cantilevered scaffolding with a triangular structure and connect it with the full-height frame to form an integral structure.

[0040] The cantilever scaffolding is firmly connected with the full frame to form an integral structure. Specifically, the transverse steel pipe 1 of the cantilever scaffolding is placed together with the horizontal pipe 4 of the full frame to form a double steel pipe, and is connected by no less than three fasteners. The transverse steel pipe 1 extends into the full frame for no less than three spans. This connection method can not only ensure the stability of the cantilever scaffolding, but also effectively transfer the load to the full frame. In addition, the oblique steel pipe 3 is connected to the transverse steel pipe 1 by a fixing member 32, and is connected to the vertical pipe 5 of the full frame by a rotating fastener 6, which further enhances the stability of the cantilever plate during construction.

[0041] S4: Lay the formwork at the predetermined location of the cantilever slab, carry out reinforcement construction, and finally pour concrete.

[0042] When laying the formwork, you need to ensure that the formwork is flat and has no obvious gaps; the formwork can choose a good quality wooden formwork or plastic formwork, and the specific choice can be determined according to the actual construction needs; then carry out the reinforcement construction to ensure that the position of the reinforcement is accurate; when pouring concrete, pay attention to the pouring speed and method to avoid bubbling or cracking of the concrete.

[0043] The implementation principle of the construction method of an unsupported cantilever slab on the facade of a high-rise residential building in an embodiment of the present application is as follows: a cantilever scaffolding is connected by a horizontal steel pipe 1, an oblique steel pipe 3 and a vertical steel pipe 2 to form a stable triangular structure; this structure can not only ensure that the cantilever slab does not sag, but also improve the load-bearing capacity and stability of the cantilever slab; at the same time, the cantilever scaffolding is firmly connected to the full frame to form an integral structure. This connection method can not only ensure the stability of the cantilever scaffolding, but also effectively transfer the load to the full frame, thereby improving the load-bearing capacity of the cantilever slab and the safety during construction.

[0044] The present application also discloses a cantilever frame for use in the above-mentioned high-rise residential building facade unsupported cantilever plate construction method, referring to Figure 2 and Figure 3 The cantilever frame includes a horizontal steel pipe 1, an oblique steel pipe 3 and a vertical steel pipe 2 connected to the horizontal steel pipe 1 and the oblique steel pipe 3, wherein one end of the horizontal steel pipe 1 and the oblique steel pipe 3 is flattened and provided with a connecting hole.

[0045] In this embodiment, the vertical pipe 5 and the horizontal pipe 4 of the full-frame are steel pipes of material Q235, diameter 48.3mm, and wall thickness 3.6mm to ensure the compressive strength of the full-frame. The size of the steel pipe on the cantilever frame is the same as that of the steel pipe on the full-frame, the wall thickness of the steel pipe on the cantilever frame is the same as that of the steel pipe on the full-frame, and the material of the steel pipe on the cantilever frame is the same as that of the steel pipe on the full-frame.

[0046] Reference Figure 3 and Figure 4Specifically, one end of the transverse steel pipe 1 is flattened and provided with a connection hole; one end of the oblique steel pipe 3 is also flattened and provided with a connection hole. The transverse steel pipe 1 and the oblique steel pipe 3 are connected by a fixing member 32 to form a stable overall structure. The flat end 31 of the transverse steel pipe 1 and the flat end 31 of the oblique steel pipe 3 are offset and fit together front to back. The fixing member 32 passes through two connected connection holes to fix the flat end 31 of the transverse steel pipe 1 and the flat end 31 of the oblique steel pipe 3. In this embodiment, the fixing member 32 is an M8 bolt and a fastening nut threadedly connected to the M8 bolt. The two flat ends 31 that fit together are limited between the head of the M8 bolt and the fastening nut; in actual applications, M10 or M12 bolts can also be selected to further improve the connection strength.

[0047] Reference Figure 2 and Figure 3 The oblique steel pipe 3 and the vertical steel pipe 2 are connected by a connecting assembly, and the transverse steel pipe 1 and the vertical steel pipe 2 are also connected by a connecting assembly, so that the vertical steel pipe 2 is connected between the transverse steel pipe 1 and the oblique steel pipe 3 to play a supporting role; and a triangular structure of the cantilever scaffolding is formed between the vertical steel pipe 2, the transverse steel pipe 1 and the oblique steel pipe 3, making the entire structure more stable. The bottom end of the vertical steel pipe 2 is supported on the pad 51 at the bottom of the full frame, and the bottom end of the oblique steel pipe 3 is supported on the top surface of the pad 51 of the full frame, ensuring the stability of the cantilever scaffolding.

[0048] Reference Figure 5 and Figure 6 The connection assembly includes two fixed connection sleeves 8, two movable connection sleeves 9 and two locking pieces; the two fixed connection sleeves 8 are provided with connection shafts, and the fixed connection sleeves 8 are rotatably connected with the connection shafts so that the two fixed connection sleeves 8 can rotate relative to each other. The two movable connection sleeves 9 are respectively hinged on the sides of the two fixed connection sleeves 8 that are away from each other. When the fixed connection sleeves 8 and the movable connection sleeves 9 at the corresponding positions are buckled with each other, a clamping space is formed between the fixed connection sleeves 8 and the movable connection sleeves 9, and the clamping space matches the oblique steel pipe 3, the horizontal steel pipe 1 and the vertical steel pipe 2. The locking piece is provided on the fixed connection sleeve 8, and the locking end of the locking piece is connected to the movable connection sleeve 9 to lock the movable connection sleeve 9 on the fixed connection sleeve 8.

[0049] A first connecting piece 81 is integrally formed at one end of the fixed connecting sleeve 8 away from the hinge, and a second connecting piece 91 is integrally formed at one end of the movable connecting sleeve 9 away from the hinge; a locking piece is arranged on the first connecting piece 81, and a locking end of the locking piece is connected to the second connecting piece 91 to lock the movable connecting sleeve 9 on the fixed connecting sleeve 8.

[0050] The second connecting piece 91 is provided with a clearance opening 92 corresponding to the position of the locking member, and the locking member includes a threaded rod 82 hinged on the side of the first connecting piece 81 close to the second connecting piece 91 and corresponding to the position of the clearance opening 92, and a locking nut 83 threadedly connected to the threaded rod 82. After the fixed connecting sleeve 8 and the movable connecting sleeve 9 are buckled with each other, the movable connecting sleeve 9 can be locked on the fixed connecting sleeve 8 by buckling the threaded rod 82 into the clearance opening 92 and tightening the locking nut 83. This connection method is not only simple, but also can ensure the stable connection between the vertical steel pipe 2 and the oblique steel pipe 3 and between the vertical steel pipe 2 and the horizontal steel pipe 1, meeting the use requirements of the cantilever scaffolding.

[0051] Reference Figure 2 and Figure 3 The vertical steel pipe 2 is tightly connected to the horizontal pipe 4 of the full-frame through a right-angle fastener 7 (not shown in the figure), forming a double steel pipe structure; this connection method can ensure the stability of the vertical steel pipe 2 and can transfer the load of the cantilever plate to the full-frame. In addition, the oblique steel pipe 3 is tightly connected to the vertical pipe 5 of the full-frame through a rotating fastener 6, further enhancing the stability of the cantilever plate during construction.

[0052] The transverse steel pipe 1 is placed together with the horizontal pipe 4 on the upper part of the full-frame to form a double steel pipe, and is connected by no less than three rotating fasteners 6. The transverse steel pipe 1 extends into the frame of the full-frame for no less than three spans. The transverse steel pipe 1 is tightly connected to the vertical pipe 5 of the full-frame through a right-angle fastener 7 (not shown in the figure).

[0053] In summary, the cantilever scaffold forms a stable triangular structure by connecting the horizontal steel pipe 1, the oblique steel pipe 3 and the vertical steel pipe 2; this structure can not only ensure that the cantilever plate does not deflect downward, but also improve the load-bearing capacity and stability of the cantilever plate. In addition, the integral connection between the cantilever scaffold and the full-frame effectively ensures the safety of the cantilever plate during the entire construction process.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction method for an unsupported cantilever slab on the facade of a high-rise residential building, characterized in that: The following steps are involved: S1: Measure and lay out to determine the position of the cantilever plate; S2: Set up the full-hall frame; S3: Erect a triangular cantilevered scaffolding and connect it with the full-height frame to form an integral structure; S4: Lay the formwork at the predetermined location of the cantilever slab and carry out reinforcement construction inside the formwork until the concrete is poured.

2. A method for constructing an unsupported cantilever slab on the facade of a high-rise residential building according to claim 1, characterized in that: The longitudinal spacing of the cantilever scaffolding does not exceed one meter. If the spacing of the vertical pipes (5) of the full-frame is greater than one meter, the vertical pipes (5) are increased to ensure the integrity of the full-frame.

3. A cantilever frame, characterized in that: A method for constructing an unsupported cantilever slab on the facade of a high-rise residential building as claimed in any one of claims 1 to 2, comprising a transverse steel pipe (1) and an oblique steel pipe (3) with a connection hole opened after flattening at one end, and a vertical steel pipe (2) connected to the transverse steel pipe (1) and the oblique steel pipe (3), wherein the flat end (31) of the transverse steel pipe (1) and the flat end (31) of the oblique steel pipe (3) are connected by a fixing member (32), and the transverse steel pipe (1), the oblique steel pipe (3) and the vertical steel pipe (2) are connected by a connecting assembly so that the transverse steel pipe (1), the oblique steel pipe (3) and the vertical steel pipe (2) form a cantilever scaffolding with a triangular structure, wherein the cantilever scaffolding with a triangular structure is used to support the cantilever slab, and the bottom end of the cantilever scaffolding is supported on a pad (51) on the bottom surface of the full-frame.

4. The cantilever frame according to claim 3, characterized in that: The transverse steel pipe (1) is placed together with the horizontal pipe (4) on the upper part of the full-frame to form a double steel pipe, and is connected by at least three rotating fasteners (6). The transverse steel pipe (1) extends into the frame of the full-frame for at least three spans. The transverse steel pipe (1) is tightly connected to the vertical pipe (5) of the full-frame through a right-angle fastener (7).

5. The cantilever frame according to claim 4, characterized in that: The vertical steel pipe (2) and the vertical pipe (5) of the full-frame are placed together to form a double steel pipe, and are connected by no less than three rotating fasteners (6). The vertical steel pipe (2) is tightly connected to the horizontal pipe (4) of the full-frame through a right-angle fastener (7).

6. The cantilever frame according to claim 4, characterized in that: The oblique steel pipe (3) is tightly connected to the vertical pipe (5) of the full-frame through a rotating fastener (6).

7. The cantilever frame according to claim 3, characterized in that: The flat end (31) of the transverse steel pipe (1) and the flat end (31) of the oblique steel pipe (3) are offset and fit together front to back, and the fixing piece (32) passes through two connected connection holes to fix the flat end (31) of the transverse steel pipe (1) and the flat end (31) of the oblique steel pipe (3).

8. The cantilever frame according to claim 3, characterized in that: The bottom end of the vertical steel pipe (2) is supported on the top surface of the pad (51) of the full frame, and the bottom end of the oblique steel pipe (3) is supported on the top surface of the pad (51) of the full frame.

9. The cantilever frame according to claim 3, characterized in that: The connection assembly comprises two fixed connection sleeves (8) rotatably connected via a connection shaft, two movable connection sleeves (9) respectively hinged on the sides of the two fixed connection sleeves (8) away from each other, and a locking member arranged on each fixed connection sleeve (8) for locking the movable connection sleeve (9) on the fixed connection sleeve (8); when the fixed connection sleeve (8) and the movable connection sleeve (9) are buckled together, a clamping space is formed between the fixed connection sleeve (8) and the movable connection sleeve (9), and the clamping space matches the oblique steel pipe (3), the transverse steel pipe (1) and the vertical steel pipe (2).

10. The cantilever frame according to claim 9, characterized in that: The movable connecting sleeve (9) is provided with a clearance opening (92) at one end away from the hinged part thereof, and the locking member comprises a threaded rod (82) hinged on the fixed connecting sleeve (8) and corresponding to the position of the clearance opening (92) and a locking nut (83) threadedly connected to the threaded rod (82); the threaded rod (82) is buckled into the clearance opening (92), and the movable connecting sleeve (9) is locked on the movable connecting sleeve (9) by the locking nut (83).

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