A punching-free cantilever I-beam reinforcement device

Abstract

The present invention relates to the technical field of scaffolding erection, in particular to a non-drilling cantilever I-beam reinforcement device. The clamping part is arranged in a U-shaped structure and combined with a tightening component, so that the U-shaped structure can be tightly fixed on the floor slab. The I-beam is arranged on the connecting plate to form a cantilever beam. The inclined strut component and the tensioning component are combined to make the I-beam stably in a horizontal state, achieving the purpose of erecting a scaffold on the I-beam, avoiding defects such as weakening of the floor slab structure strength and poor waterproof performance of the floor slab caused by drilling holes in the floor slab to install the I-beam. Moreover, the direct pressing and installation method of the tightening component shortens the construction period of the scaffolding erection and demolition process and reduces the scaffolding erection cost.

Description

Technical Field

[0001] The invention relates to the technical field of scaffolding construction, in particular to a punch-free cantilevered I-beam reinforcement device. Background Art

[0002] Scaffolding is a structure erected for construction work, typically constructed by interconnecting steel pipes and fasteners. Scaffolding is primarily designed to provide vertical and horizontal transportation for high-altitude work, while also providing a reliable work surface for construction workers. For example, during exterior and interior wall decoration, scaffolding is used to create auxiliary pathways and safety structures. Scaffolding is a complex project, and for high-altitude construction areas, erecting a complete scaffold is expensive, time-consuming, and inconvenient. Consequently, cantilever scaffolding has emerged for high-rise buildings.

[0003] At present, the solution adopted for cantilever scaffolding construction is: drilling holes in the floor slab, and then inserting bolts or using steel bars to tie the bottom end of the scaffolding and the bottom plate, for example: Figure 7 and Figure 8 The structure shown in this article is very likely to affect the strength of the floor structure and reduce the waterproof performance of the floor, requiring subsequent construction waterproofing treatment, such as: Figure 7 The structure shown in the figure will cause water seepage on the exterior wall. For example: Figure 8 The erection structure shown can easily lead to leaking structures on the floors above and below. Therefore, a punch-free cantilevered I-beam installation structure has appeared in the prior art. For example, Patent No. 202022956822.0 discloses a cantilever beam (I-beam), one end of which is fixedly connected to the floor slab by pre-embedded steel bars, thereby avoiding punching holes in the floor slab to install the cantilever beam, overcoming the defects of the traditional method of punching holes in the floor slab to fix the cantilever beam, which weakens the structural strength of the floor slab and has poor waterproof performance. However, this method requires pre-embedded steel bars on the floor slab, exposing the steel bars. However, during the construction of high-rise buildings, it takes a certain amount of time to decorate the floor slab surface, which causes the exposed steel bars on the floor slab to rust due to exposure to the environment, thereby affecting the overall performance of the steel bars in the floor slab, making the overall structural performance of the floor slab still easily affected. Moreover, during the later construction of the floor slab, the pre-embedded steel bars need to be cut off, otherwise it will affect or even bring safety hazards to the floor slab construction workers.

[0004] Based on this, the researchers combined their long-term practical experience to improve the fixed installation structure of the cantilever I-beam (cantilever beam), providing a new structure for the erection and construction of cantilever scaffolding. Summary of the Invention

[0005] To solve the above technical problems existing in the prior art, the present invention provides a punching-free cantilever I-beam reinforcement device.

[0006] Specifically, it is achieved through the following technical solutions:

[0007] The punching-free cantilever I-beam reinforcement device includes a clamping part, and the clamping part is a U-shaped structure composed of a gripping plate, a connecting plate, and a pressing plate. The gripping plate is located at the left end of the pressing plate, and the connecting plate is located at the right end of the pressing plate; the height of the gripping plate < the height of the connecting plate; a pressing component is provided at the bottom end of the pressing plate, and the pressing component can act upward on the pressing plate to press it tightly; on the side edge of the connecting plate near the top, an I-beam is provided along the direction parallel to the pressing plate, and an inclined support component is provided between the lower surface of the I-beam near the right end and the side edge of the connecting plate near the bottom end; a tensioning component capable of pulling up the right end of the I-beam is provided on the upper surface of the I-beam near the right end.

[0008] The clamping part is set as a U-shaped structure and combined with the pressing component, so that the U-shaped structure can be tightly fixed on the floor slab, and the I-beam is arranged on the connecting plate to form a cantilever beam. By combining the inclined support component and the tensioning component, the I-beam can be stably in a horizontal state, achieving the purpose of erecting a scaffold on the I-beam, avoiding defects such as weakening the structural strength of the floor slab and poor waterproof performance of the floor slab caused by punching holes in the floor slab for installing the I-beam. Moreover, the direct pressing and installation method using the pressing component shortens the construction period of the scaffold erection and demolition process and reduces the scaffold erection cost.

[0009] In order to ensure the stable installation of the punching-free cantilever I-beam reinforcement device on the floor slab, preferably, the punching-free cantilever I-beam reinforcement device further includes a floor slab and a flange integrally formed with the floor slab, and the flange is located on the lower surface of the right end of the floor slab; the flange is clamped in the U-shaped structure, and the pressing plate of the pressing component is pressed against the bottom end of the flange for fixation. During use, the clamping part of the U-shaped structure clamps the flange, and the pressing plate at the bottom of the clamping part is tightly fixed to the bottom of the flange by using the pressing component, realizing the fixation of the clamping part of the U-shaped structure on the flange. Then, through the support and tension of the inclined support component and the tensioning component on the I-beam structure, the I-beam is balanced in a horizontal state, ensuring the stability of the clamping of the clamping part and avoiding the punching operation on the floor slab, thus shortening the construction period.

[0010] For the convenience of the operation of the installation construction and the demolition construction of the clamping part, preferably, the pressing component includes a platform, a vertical rod arranged on the lower surface of the platform, and a pressing member for pressing the pressing plate. The bottom end of the pressing member is integrally formed with an adjusting screw rod. The platform is provided with a plurality of through holes for the free passage of the adjusting screw rod, and a slot capable of inserting the adjusting screw rod is axially arranged at the upper end of the vertical rod. The slot at the top end of the vertical rod corresponds to the through hole on the platform, and an adjusting knob is arranged on the adjusting screw rod located on the upper surface of the platform. The adjusting knob can adjust the depth of insertion of the adjusting screw rod into the slot.

[0011] For enhancing stability and facilitating the adjustment and installation of the pressing component, preferably, the top end of the vertical rod is fixedly connected to the lower surface of the platform, and the adjusting knob is a nut that can match the adjusting screw rod. More preferably, the fixed connection is welding or integral molding.

[0012] To prevent the I-beam from flipping downward and enhance the stability of the diagonal brace, preferably, the diagonal brace component includes a diagonal brace a between the lower surface near the right end of the I-beam and the side near the bottom end of the connecting plate, and a diagonal brace b between the lower surface at the midpoint of the I-beam and the side at the midpoint of the connecting plate. The diagonal brace a and the diagonal brace b are parallel to each other. The diagonal brace b is fixedly connected to the I-beam and the connecting plate, and the diagonal brace a is fixedly connected to the I-beam and the connecting plate. More preferably, the fixed connection is welding or integral molding or bolt connection. More preferably, the tensioning component includes an upper lifting ear arranged on the upper surface near the right end of the I-beam and a pull rod arranged on the upper lifting ear. The pull rod can form a force to pull the upper lifting ear upward.

[0013] To enable the right end of the I-beam to have an upward lifting force, preferably, the tensioning component further includes a lower lifting ear arranged on the side near the top end of the connecting plate; the upper lifting ear located at the lower layer and the lower lifting ear located at the upper layer are connected by the pull rod in a tied connection. A more preferred solution is to arrange the lower lifting ear at the edge of the upper floor slab.

[0014] For the convenience of the erection and installation of the scaffold, preferably, a plurality of steel pipes are arranged on the upper surface of the I-beam.

[0015] To enhance the clamping stability of the clamping part and make the left end of the clamping part press against the lower surface of the floor slab, preferably, an extension plate parallel to the pressing plate is integrally formed at the top end of the gripping plate.

[0016] In order to improve the installation efficiency and enhance the stability, preferably, a punching-free cantilever I-beam reinforcement device includes a clamping part, a floor slab, an I-beam, a support assembly and a pressing assembly. The clamping part is a U-shaped structure composed of a clamping plate, a connecting plate and a pressing plate. The upper surface of the right end of the clamping plate is fixedly connected to the bottom end of the pressing plate, and the lower surface of the right end of the connecting plate is fixedly connected to the top end of the pressing plate 1.3; the floor slab is inserted through the U-shaped opening of the clamping part and is tightly fixed by sticking. The upper surface of the connecting plate is fixedly connected with an I-beam, and the right end of the I-beam extends from the floor slab to form a cantilever end. The clamping plate is closely attached to the lower surface of the floor slab, and the pressing plate is closely attached to the right end of the floor slab; there is a pressing assembly between the upper surface of the I-beam and the upper layer of the floor slab, and there is a diagonal brace assembly between the lower surface of the I-beam near the right end and the side of the pressing plate near the bottom end; a steel pipe is fixedly arranged on the upper surface of the cantilever end, an upper lifting ear is fixedly arranged on the upper surface of the cantilever end near the right end, and a lower lifting ear is arranged at the edge of the upper layer of the floor slab. A pull rod is arranged between the upper lifting ear and the lower lifting ear.

[0017] Compared with the prior art, the technical effects of the present invention are reflected in:

[0018] The present invention has a simple structure, is easy to use, and has high stability. It can fully ensure that the I-beam is in a horizontal state and guarantee the stability of the scaffolding construction; at the same time, the combination of the clamping part and the flanging structure of the floor slab speeds up the installation construction efficiency of the cantilever I-beam, avoids punching construction on the floor slab, exterior wall, etc., prevents the weakness defect of the floor slab strength caused by changing the floor slab structure, helps to guarantee the waterproofness and anti-seepage of the floor slab, shortens the construction period of scaffolding erection or demolition, and reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 is Figure 1 a schematic diagram of the installation and use structure.

[0021] Figure 3 is Figure 1 a schematic diagram of another embodiment structure.

[0022] Figure 4 is Figure 1 a schematic diagram of another embodiment structure.

[0023] [[ID=3)]] Figure 5 is Figure 4 a schematic diagram of the sectional structure of Part I.

[0024] Figure 6 It is a schematic diagram of the overall application structure of the present invention.

[0025] Figure 7 It is a schematic diagram of an existing installation and use structure.

[0026] Figure 8 It is a schematic diagram of another existing installation and use structure.

[0027] Figure 9 It is a schematic diagram of the structure of another embodiment.

[0028] 1 - clamping part, 2 - I-beam, 3 - diagonal brace a, 4 - diagonal brace b, 5 - upper lifting lug, 6 - lower lifting lug, 7 - tie rod, 8 - steel pipe, 9 - adjusting bolt, 10 - platform, 11 - vertical pole, 12 - floor slab, 13 - flanging, 14 - adjusting knob, 15 - tightening part, 1.1 - gripping plate, 1.2 - connecting plate, 1.3 - tightening plate, 1.4 - extension plate. Specific implementation mode

[0029] The technical solution of the present invention will be further limited below in conjunction with the attached drawings and specific implementation modes, but the scope of protection required is not limited only to the description made.

[0030] As Figures 1-6 shown, in this embodiment, the hole-free cantilever I-beam reinforcement device includes a clamping part 1. The clamping part 1 is a U-shaped structure composed of a gripping plate 1.1, a connecting plate 1.2 and a tightening plate 1.3. The gripping plate 1.1 is located at the left end of the tightening plate 1.3, and the connecting plate 1.2 is located at the right end of the tightening plate 1.3; the height of the gripping plate 1.1 < the height of the connecting plate 1.2; a tightening component is provided at the bottom end of the tightening plate 1.3, and the tightening component can act upward on the tightening plate 1.3 to tighten; on the side edge of the connecting plate 1.2 near the top, an I-beam 2 is provided along the direction parallel to the tightening plate 1.3; a tensioning component is provided on the upper surface of the I-beam 2 near the right end to pull up the right end of the I-beam 2.

[0031] Using the clamping function of the clamping part 1 to clamp on the floor slab 12, avoiding hole punching on the floor slab, exterior wall, etc., preventing the weakening of the floor slab strength, and ensuring the waterproofness and anti-seepage of the floor slab; using the U-shaped structure composed of the gripping plate 1.1, the connecting plate 1.2 and the tightening plate 1.3 for the clamping part, connecting the I-beam 2 to the connecting plate 1.2, and using the action of the diagonal brace component and the tensioning component, combined with the connection between the I-beam 2 and the connecting plate 1.2, to make the I-beam 2 in a horizontal state, fully avoiding defects such as the right end of the I-beam 2 falling downward, enhancing the cantilever stability of the I-beam 2, fully avoiding hole punching on the floor slab 12, accelerating the construction of the scaffolding, shortening the construction period, and reducing the scaffolding construction cost.

[0032] AsFigure 1 , Figure 2 As shown, in this embodiment, the punch-free cantilever I-beam reinforcement device further includes a floor slab 12 and a flange 13 integrally formed with the floor slab 12, and the flange 13 is located on the lower surface of the right end of the floor slab 12; the flange 13 is clamped within the U-shaped structure, and the pressing component is used to press the pressing plate 1.3 against the bottom end of the flange 13 for fixation. The clamping portion 1 is used to clamp the flange 13, as Figure 2 , Figure 4 , Figure 6 shown, and the pressing component is used to press the clamping portion 1, avoiding the defects of the floor slab 12 structure being damaged during the installation of the cantilever I-beam by punching holes in the floor slab 12, resulting in weakened floor slab strength and reduced waterproof performance, shortening the construction period of punching holes in the floor slab 12 and the exterior wall during the scaffolding erection, and reducing the construction cost.

[0033] When the present invention is specifically used, the overall structure formed as Figure 1 , Figure 2 is considered, which is more conducive to simplifying the scaffolding erection and installation process, shortening the construction period, and reducing the construction cost. Specifically, when in use, the clamping portion 1 with a U-shaped structure is used to clamp the flange 13 according to Figure 2 , Figure 4 , Figure 6Clamped in the manner shown, such that the clamping plate 1.1 is closely attached to the left side of the flanging 13, the connecting plate 1.2 is closely attached to the right side of the flanging 13, and the abutting plate 1.3 is closely attached to the bottom of the flanging 13. At the same time, the clamping plate 1.1 is connected to the left end of the abutting plate 1.3, and the connecting plate 1.2 is connected to the right end of the abutting plate 1.3. The connection here can be integrally formed, welded or bolted between the clamping plate 1.1 and the abutting plate 1.3, and integrally formed, welded or bolted between the abutting plate 1.3 and the connecting plate 1.2, so that the formed U-shaped clamping part 1 forms a stable integral structure, enhancing the integrity of the clamping part 1, avoiding the phenomenon that the abutting plate 1.3, the clamping plate 1.1 and the connecting plate 1.2 fall off from each other, ensuring the overall clamping performance, and using the action of the abutting component to abut the abutting plate 1.3 against the bottom of the flanging 13, so as to stably clamp and fix the clamping part 1 on the flanging 13, enhancing the stability; then, by arranging the I-beam 2 on the right side near the top of the connecting plate 1.2, connecting the I-beam 2 to the right side near the top of the connecting plate 1.2 in the way of bolt connection, welding or integral forming, and at the same time using the action of the diagonal brace component and the tensioning component, an upward acting force is formed at the right end of the I-beam 2. After the scaffolding is erected on the upper surface of the I-beam 2, the downward acting force of the scaffolding can be affected by the upward acting force, so as to ensure that the I-beam 2 is in a horizontal state for a long time, maintaining the stability of the scaffolding erection, fully avoiding drilling holes in the floor slab 12 to install the cantilever I-beam 2, preventing the high construction intensity, long construction period, high construction cost and other defects caused by drilling, and at the same time avoiding the defects such as the weakening of the structural strength of the floor slab 12 and the reduction of the waterproof performance caused by drilling.

[0034] As Figures 1-6 shown, in this embodiment, the abutting component includes a platform 10 and a vertical rod 11 arranged on the lower surface of the platform 10, and an abutting member 15 for abutting the abutting plate 1.3. The bottom end of the abutting member 15 is integrally formed with an adjusting screw rod 9; the platform 10 is provided with a plurality of through holes for the adjusting screw rod 9 to freely pass through, and a slot for the adjusting screw rod 9 to be inserted is axially provided at the upper end of the vertical rod 11; the slot at the top end of the vertical rod 11 corresponds to the through holes on the platform 10, and an adjusting knob 14 is provided on the adjusting screw rod 9 located on the upper surface of the platform 10, and the adjusting knob 14 can adjust the depth of the adjusting screw rod 9 inserted into the slot. By adjusting the height of the adjusting screw rod 9, the abutting degree between the bottom of the flanging 13 and the platform 10 can be realized, and then the strength of the abutting plate 1.3 against the bottom of the flanging 13 can be adjusted to meet the stability during installation and the convenience during disassembly.

[0035] In this embodiment, the top end of the vertical rod 11 is fixedly connected to the lower surface of the platform 10, such as by welding, integral molding, etc., and the adjusting knob 14 is a nut that can match the adjusting screw rod 9. By turning the nut with a wrench, the height of the adjusting screw rod 9 can be adjusted, so as to adjust the tightening degree between the pressing plate 1.3 and the flanging 13, and then facilitate disassembly and installation.

[0036] In this embodiment, the diagonal brace assembly includes a diagonal brace a3 between the lower surface of the I-beam 2 near the right end and the side edge near the bottom end of the connecting plate 1.2, and a diagonal brace b4 between the lower surface of the midpoint of the I-beam 2 and the side edge of the midpoint of the connecting plate 1.2. The diagonal brace a3 and the diagonal brace b4 are parallel to each other. The diagonal brace b4 is fixedly connected to the I-beam 2 and the connecting plate 1.2, such as by welding, integral molding or bolt connection. The diagonal brace a3 is fixedly connected to the I-beam 2 and the connecting plate 1.2, such as by welding, integral molding or bolt connection. This simplifies the structure of the diagonal braces and enhances the supporting strength of the diagonal braces.

[0037] In this embodiment, the tensioning assembly includes an upper lifting lug 5 provided on the upper surface of the I-beam 2 near the right end and a pull rod 7 provided on the upper lifting lug 5. The pull rod 7 can form a force to pull the upper lifting lug upwards. The upper lifting lug 5 is integrally formed with the upper surface of the I-beam 2, enhancing stability. In this embodiment, the tensioning assembly further includes a lower lifting lug 6 provided on the side edge near the top end of the connecting plate 1.2. The upper lifting lug 5 located in the lower layer and the lower lifting lug 6 located in the upper layer are connected by the pull rod 7 in a tied connection. In this way, the pulling force of the pull rod 7 can be formed between the upper lifting lug 5 and the lower lifting lug 6 to enhance the stability of the cantilever I-beam 2. To avoid the defect that when the lower lifting lug 6 is provided on the side wall of the connecting plate 1.2, it causes pulling on the connecting plate 1.2 and results in poor stability, a more excellent solution for the lower lifting lug 6 of the present invention is to be provided on the edge of the floor slab 12 (as Figure 9 shown), and integrally formed with the edge of the floor slab 12. In this way, the lower lifting lug 6 can be located on the second floor slab 12, such as on the edge of the upper floor slab as Figure 6 shown, and the upper lifting lug 5 is located on the first floor, such as on the upper surface of the I-beam 2 near the right end where the lower floor slab is located as Figure 6 shown, so as to form a tensioned state of the pull rod 7 between the upper and lower floor slabs as Figure 6 shown, achieving the purpose of enhancing stability. Here, the lower lifting lug 6 is determined by the downward pulling force, and the upper lifting lug 5 is determined by the upward pulling force.

[0038] In a more excellent operation solution, the pull rod 7 adopts a flower basket type connecting pull rod, which is convenient for installation and connection and improves construction efficiency.

[0039] In this embodiment, a number of steel pipes 8 are provided on the upper surface of the I-beam 2, which greatly facilitates the installation and erection of a scaffolding on the upper surface of the I-beam 2. In this embodiment, at the top end of the gripping plate 1.1, an extension plate 1.4 parallel to the abutting plate 1.3 is integrally formed, which helps to enhance the extension plate 1.4 to closely adhere to the lower surface of the floor slab 12, so that the clamping portion 1 can more stably adhere to and clamp and fix on the floor slab 12, ensuring the stability of the installation.

[0040] In addition to the above technical solutions, the present researcher also supplements and provides another installation structure for a hole-free cantilever I-beam, specifically as Figure 9 shown.

[0041] As Figure 1 、 Figure 2 、 Figure 3 and Figure 9 shown, in this embodiment, a hole-free cantilever I-beam reinforcement device includes a clamping portion 1, a floor slab 12, an I-beam 2, a support assembly and an abutting assembly. The clamping portion 1 is a U-shaped structure composed of a gripping plate 1.1, a connecting plate 1.2 and an abutting plate 1.3. The upper surface of the right end of the gripping plate 1.1 is fixedly connected to the bottom end of the abutting plate 1.3, such as by welding, integral molding, bolt connection, etc. The lower surface of the right end of the connecting plate 1.2 is fixedly connected to the top end of the abutting plate 1.3, such as by welding, integral molding, bolt connection, etc.; the floor slab 12 is inserted from the U-shaped opening of the clamping portion 1 and is closely adhered and fixed. The upper surface of the connecting plate 1.2 is fixedly connected (such as: integral molding or welding or bolt fastening) with an I-beam 2. The right end of the I-beam 2 extends from within the floor slab 12 to form a cantilever end. The gripping plate 1.1 closely adheres to the lower surface of the floor slab 12, and the abutting plate 1.3 closely adheres to the right end of the floor slab 12; between the upper surface of the I-beam 2 and the upper floor slab 12, an abutting assembly is provided. Between the lower surface of the I-beam 2 near the right end and the side of the abutting plate 1.3 near the bottom end, a diagonal brace assembly is provided; on the upper surface of the cantilever end, a steel pipe 8 is fixedly provided. On the upper surface of the cantilever end near the right end, an upper lifting lug 5 is fixedly provided, and on the edge of the upper floor slab 12, a lower lifting lug 6 is provided. A pull rod 7 is provided between the upper lifting lug 5 and the lower lifting lug 6.

[0042] Through the abutting assembly between the upper floor slab 12 and the I-beam 2, while using the clamping portion 1 to clamp at the edge of the lower floor slab 12, and then using the fixed connection between the I-beam 2 and the connecting plate 1.2, the I-beam 2 is cantilevered, and at the same time, it is supported by the diagonal brace assembly, enhancing the overall stability, and avoiding drilling holes in the floor slab, improving the construction efficiency.

[0043] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A punch-free cantilever I-beam reinforcement device, characterized in that: The invention comprises a clamping portion (1), wherein the clamping portion (1) is a U-shaped structure composed of a gripping plate (1.1), a connecting plate (1.2) and a pressing plate (1.3), wherein the gripping plate (1.1) is located at the left end of the pressing plate (1.3), and the connecting plate (1.2) is located at the right end of the pressing plate (1.3); the height of the gripping plate (1.1) is less than the height of the connecting plate (1.2); a pressing assembly is provided at the bottom end of the pressing plate (1.3), and The tightening assembly can act on the tightening plate (1.3) to tighten it upward; an I-beam (2) is provided on the side of the connecting plate (1.2) near the top end in a direction parallel to the tightening plate (1.3); a diagonal bracing assembly is provided between the lower surface of the I-beam (2) near the right end and the side of the connecting plate (1.2) near the bottom end; a tensioning assembly capable of pulling the right end of the I-beam (2) upward is provided on the upper surface of the I-beam (2) near the right end.

2. The punch-free cantilevered I-beam reinforcement device according to claim 1, characterized in that: The punch-free cantilevered I-beam reinforcement device further comprises a floor slab (12) and a flange (13) integrally formed with the floor slab (12), and the flange (13) is located on the lower surface of the right end of the floor slab (12); the flange (13) is engaged in the U-shaped structure, and the clamping assembly is used to press the clamping plate (1.3) against the bottom end of the flange (13) for fixation.

3. The punch-free cantilevered I-beam reinforcement device according to claim 1 or 2, characterized in that: The clamping assembly comprises a platform (10), a vertical rod (11) arranged on the lower surface of the platform (10), and a clamping piece (15) that presses against the clamping plate (1.3), and the bottom end of the clamping piece (15) is integrally formed with an adjusting screw (9); the platform (10) is provided with a plurality of through holes for the adjusting screw (9) to pass freely, and the upper end of the vertical rod (11) is axially provided with a slot for the adjusting screw (9) to be inserted; the top slot of the vertical rod (11) is arranged corresponding to the through hole on the platform (10), and the adjusting screw (9) located on the upper surface of the platform (10) is provided with an adjusting button (14), and the adjusting button (14) can adjust the depth of the adjusting screw (9) inserted into the slot.

4. The punch-free cantilevered I-beam reinforcement device according to claim 3, characterized in that: The top end of the vertical rod (11) is fixedly connected to the lower surface of the platform (10), and the adjusting button (14) is a nut that can match the adjusting screw (9).

5. The punch-free cantilevered I-beam reinforcement device according to claim 4, characterized in that: The fixed connection is welding or integral molding.

6. The punch-free cantilevered I-beam reinforcement device according to claim 1, characterized in that: The diagonal brace assembly comprises a diagonal brace a (3) located between the lower surface of the I-beam (2) near the right end and the side edge of the connecting plate (1.2) near the bottom end, and a diagonal brace b (4) located between the lower surface of the midpoint of the I-beam (2) and the side edge of the midpoint of the connecting plate (1.2), wherein the diagonal brace a (3) and the diagonal brace b (4) are parallel to each other, the diagonal brace b (4) is fixedly connected to the I-beam (2) and the connecting plate (1.2), and the diagonal brace a (3) is fixedly connected to the I-beam (2) and the connecting plate (1.2).

7. The punch-free cantilevered I-beam reinforcement device according to claim 1, characterized in that: The tensioning assembly includes an upper lug (5) arranged on the upper surface of the I-beam (2) near the right end and a pull rod (7) arranged on the upper lug (5), and the pull rod (7) can generate a force to pull the upper lug (5) upward.

8. The punch-free cantilevered I-beam reinforcement device according to claim 7, characterized in that: The tensioning assembly further comprises a lower lifting lug (6) arranged on the side of the connecting plate (1.2) close to the top end; the upper lifting lug (5) located at the lower layer and the lower lifting lug (6) located at the upper layer are tensioned and connected via the pull rod (7).

9. The punch-free cantilevered I-beam reinforcement device according to claim 1, characterized in that: The upper surface of the I-beam (2) is provided with a plurality of steel pipes (8); and / or the top end of the gripping plate (1.1) is integrally formed with an extension plate (1.4) parallel to the abutting plate (1.3).

10. A punch-free cantilevered I-beam reinforcement device, comprising a clamping portion (1), a floor slab (12), an I-beam (2), a supporting assembly and a tightening assembly, wherein the clamping portion (1) is a U-shaped structure composed of a gripping plate (1.1), a connecting plate (1.2) and a tightening plate (1.3), the upper surface of the right end of the gripping plate (1.1) is fixedly connected to the bottom end of the tightening plate (1.3), and the lower surface of the right end of the connecting plate (1.2) is fixedly connected to the top end of the tightening plate (1.3); the floor slab (12) is inserted and tightly fixed from the U-shaped opening of the clamping portion (1), the upper surface of the connecting plate (1.2) is fixedly connected to the I-beam (2), and the right end of the I-beam (2) is fixed from the The cantilever end is formed by extending inside the floor slab (12), the gripping plate (1.1) is in close contact with the lower surface of the floor slab (12), and the abutting plate (1.3) is in close contact with the right end of the floor slab (12); a abutting assembly is provided between the upper surface of the I-beam (2) and the upper floor slab (12), and a diagonal bracing assembly is provided between the lower surface of the I-beam (2) near the right end and the side of the abutting plate (1.3) near the bottom end; a steel pipe (8) is fixedly provided on the upper surface of the cantilever end, an upper hanging ear (5) is fixedly provided on the upper surface of the cantilever end near the right end, and a lower hanging ear (6) is provided on the edge of the upper floor slab (12), and a pull rod (7) is provided between the upper hanging ear (5) and the lower hanging ear (6).

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