Building roof large-span cantilever member formwork

Abstract

The invention provides a building roof large-span cantilever member formwork, and belongs to the technical field of building roofs, the building roof large-span cantilever member formwork comprises a dismounting and mounting part, the dismounting and mounting part comprises a vertical rod main body and a cross rod main body, the outer surface of the vertical rod main body is fixedly connected with a fixed ring plate, and the interior of the fixed ring plate is slidably connected with a semi-arc-shaped sliding plate; a fixing assembly is arranged between the outer surface of the semi-arc-shaped sliding plate and the outer surface of the fixing ring plate, sliding plates are symmetrically connected to the outer surface of the vertical rod body in a sliding mode, and limiting assemblies and stabilizing components are arranged between the outer surfaces of the sliding plates and the outer surface of the fixing ring plate; a triangular assembly is arranged between the outer surface of the circular hollow plate and the outer surface of the sliding plate. By arranging the dismounting and mounting component, the stabilizing component and the auxiliary component, the problems that a building roof large-span cantilever component formwork is inconvenient to dismount and mount, and the connecting position is prone to deformation after being stressed for a long time are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building roof, and particularly relates to a building roof large-span cantilever component formwork. BACKGROUND

[0002] With the economic development and market demand, more and more housing building functions and shapes gradually become diversified, and more large cantilever balconies or similar cantilever components of commodity houses are increasingly used in housing building design, and various forms of cantilever components are also used, which can be generally divided into cantilever type, cable-stayed type and under-braced type. Most of the structures need to be connected to the concrete structure by steel bars, pegs and other structures during construction. The cantilever component formwork is a support system composed of multiple vertical rods and horizontal rods, which is used to bear various loads of the cantilever component during the construction process.

[0003] At present, the cantilever component formwork is usually composed of a support system connected by rigid fasteners by multiple vertical rods and horizontal rods. Due to the large number of vertical rods and horizontal rods and the complex connection points, the installation and disassembly process is extremely tedious, which consumes a large amount of manpower and time and seriously affects the construction progress. At the same time, the connection between the vertical rods and the horizontal rods may need to bear excessive pressure during long-term use, which may cause deformation and reduce the stability and safety of the entire support system, thereby causing potential safety hazards in construction. SUMMARY

[0004] The present application aims to provide a building roof large-span cantilever component formwork, which aims to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A building roof large-span cantilever component formwork, comprising a disassembly component, which comprises a vertical rod body and a horizontal rod body, a fixed ring plate is fixedly connected to the outer surface of the vertical rod body, a semicircular sliding plate is slidably connected to the inside of the fixed ring plate, a fixing assembly is arranged between the outer surface of the semicircular sliding plate and the outer surface of the fixed ring plate, the fixing assembly is used for fixing the semicircular sliding plate, a sliding plate is symmetrically slidably connected to the outer surface of the vertical rod body, a limiting assembly is arranged between the outer surface of the sliding plate and the outer surface of the fixed ring plate, and the limiting assembly is used for limiting the sliding plate; a stabilizing component comprises a circular hollow plate arranged outside the horizontal rod body, a triangular assembly is arranged between the outer surface of the circular hollow plate and the outer surface of the sliding plate, and the triangular assembly is used for stably supporting the horizontal rod body; an auxiliary component comprises a reinforcing assembly arranged outside the circular hollow plate, and the reinforcing assembly is used for enhancing the stability of the triangular assembly.

[0006] As a preferred scheme of the present application, the fixing assembly comprises a first sliding groove symmetrically formed on the outer surface of the fixing ring plate, the inside of the first sliding groove is slidably connected with a trapezoidal plate, the outer surface of the trapezoidal plate is fixedly connected with a first spring, the end of the first spring away from the trapezoidal plate is fixedly connected with the inside of the first sliding groove, and the outer surface of the semicircular sliding plate is formed with a plurality of uniformly distributed square grooves, the inside of the square grooves corresponds to the outer surface of the trapezoidal plate.

[0007] As a preferred scheme of the present application, the limiting assembly comprises a fixing plate fixedly connected with the outer surface of the sliding plate, the outer surface of the fixing plate is formed with a plurality of uniformly distributed limiting grooves, the outer surface of the fixing ring plate is symmetrically fixedly connected with a hollow groove plate, the inside of the hollow groove plate is slidably connected with the outer surface of the fixing plate, and the outer surface of the hollow groove plate is formed with a through opening groove, the inside of the through opening groove is in communication with the inside of the limiting groove.

[0008] As a preferred scheme of the present application, the inside of the semicircular sliding plate is slidably connected with a T-shaped plate, and the outer surface of the T-shaped plate is symmetrically fixedly connected with an extrusion plate.

[0009] As a preferred scheme of the present application, the inside of the semicircular sliding plate is fixedly connected with a second spring, and the end of the second spring away from the semicircular sliding plate is fixedly connected with the outer surface of the T-shaped plate.

[0010] As a preferred scheme of the present application, the end of the extrusion plate away from the T-shaped plate corresponds to the inclined end surface of the trapezoidal plate, the end of the extrusion plate away from the T-shaped plate corresponds to the inside of the through opening groove, and the end of the extrusion plate away from the T-shaped plate corresponds to the inside of the limiting groove.

[0011] As a preferred scheme of the present application, the shape of the fixing ring plate is a gap double circular ring plate, and the arc-shaped end of the semicircular sliding plate is located at the gap of the fixing ring plate.

[0012] As a preferred scheme of the present application, the triangular assembly comprises a fixing block symmetrically fixedly connected with the outer surface of the circular hollow plate, the outer surface of the fixing block is fixedly connected with a fixing rod, the outer surface of the fixing rod is rotatably connected with a long strip plate, and the end of the long strip plate away from the circular hollow plate is rotatably connected with the outer surface of the sliding plate.

[0013] As a preferred scheme of the present application, the reinforcing assembly comprises an arc-shaped clamping plate symmetrically slidably connected with the outer surface of the circular hollow plate, the inside of the circular hollow plate is symmetrically formed with a second sliding groove, the inside of the second sliding groove is fixedly connected with a third spring, and the end of the third spring away from the second sliding groove is fixedly connected with the outer surface of the arc-shaped clamping plate.

[0014] In a preferred embodiment of the present invention, a semicircular block is fixedly connected to one end of the long strip plate near the circular hollow plate, and the outer surface of the semicircular block is in contact with the top of the arc-shaped clamping plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up disassembly and assembly components, utilizes the cooperation of a fixed ring plate, a semi-circular sliding plate, a fixing component, a sliding plate, and a limiting component to achieve rapid disassembly and assembly between the main body of the upright and the main body of the crossbar. Compared with the traditional rigid fastener bolt connection method, it greatly simplifies the installation and disassembly process, saves a lot of manpower and time, improves construction efficiency, and avoids installation errors caused by complicated connection points, thus improving construction quality.

[0016] 2. By setting up stabilizing components and utilizing the coordinated work of circular hollow plates and triangular components, this invention provides a stable support for the main body of the crossbar. The long strip plate in the triangular component is rotatably connected to the sliding plate to form a stable triangular structure, which effectively disperses various loads generated by the cantilever component during construction, enhances the stability and safety of the entire support system, and reduces the risk of deformation caused by long-term use or excessive pressure.

[0017] 3. This invention, by setting auxiliary components, utilizes reinforcement components to strengthen the stress-bearing surface of the long strip plate 213. The reinforcement process involves the tight fit between the arc-shaped clamp and the semi-circular block, which provides additional support to the load-bearing surface of the long strip when it is under load. This effectively prevents the long strip from bending or breaking due to excessive force, and further improves the stability and reliability of the entire cantilever structure formwork. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall rear view structure of the present invention; Figure 3 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B; Figure 6For Figure 5 Structure enlarged schematic view at C; Figure 7 For the fixed ring plate profile structure schematic diagram of the application.

[0019] In the figure: 10, the main body of the vertical rod; 11, the main body of the horizontal rod; 12, the fixed ring plate; 13, the semicircular sliding plate; 14, the fixed assembly; 141, the first sliding groove; 142, the trapezoidal plate; 143, the first spring; 144, the square groove; 15, the sliding plate; 16, the limiting assembly; 161, the fixed plate; 162, the limiting groove; 163, the hollow groove plate; 164, the through slot; 17, the T-shaped plate; 18, the extrusion plate; 19, the second spring; 20, the circular hollow plate; 21, the triangular assembly; 211, the fixed block; 212, the fixed rod; 213, the long strip plate; 30, the reinforcing assembly; 301, the arc clamping plate; 302, the second sliding groove; 303, the third spring; 31, the semicircular block. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the accompanying drawings. Example 1

[0021] Reference Figures 1-7 , for the first embodiment of the application, the embodiment provides a building roof large-span cantilever component formwork, including disassembling parts, which includes vertical rod main body 10 and horizontal rod main body 11, the outer surface of vertical rod main body 10 is fixedly connected with fixed ring plate 12, the inside of fixed ring plate 12 is slidably connected with semicircular sliding plate 13, the outer surface of semicircular sliding plate 13 and the outer surface of fixed ring plate 12 are provided with fixed assembly 14, fixed assembly 14 is used for fixing semicircular sliding plate 13, the outer surface of vertical rod main body 10 is symmetrically slidably connected with sliding plate 15, the outer surface of sliding plate 15 and the outer surface of fixed ring plate 12 are provided with limiting assembly 16, limiting assembly 16 is used for limiting sliding plate 15, the inside of semicircular sliding plate 13 is slidably connected with T-shaped plate 17, the outer surface of T-shaped plate 17 is symmetrically fixedly connected with extrusion plate 18, the inside of semicircular sliding plate 13 is fixedly connected with second spring 19, the end of second spring 19 away from semicircular sliding plate 13 is fixedly connected with the outer surface of T-shaped plate 17, and the shape of fixed ring plate 12 is gap double circular ring plate, and the arc-shaped end of semicircular sliding plate 13 is located at the gap of fixed ring plate 12.

[0022] Specifically, the fixing assembly 14 comprises a first sliding groove 141 symmetrically formed on the outer surface of the fixing ring plate 12, the inside of the first sliding groove 141 is slidably connected with a trapezoidal plate 142, the outer surface of the trapezoidal plate 142 is fixedly connected with a first spring 143, the end of the first spring 143 away from the trapezoidal plate 142 is fixedly connected with the inside of the first sliding groove 141, the outer surface of the semicircular sliding plate 13 is formed with a plurality of square grooves 144 uniformly distributed, the inside of the square groove 144 corresponds to the outer surface of the trapezoidal plate 142 Further, the limiting assembly 16 comprises a fixed plate 161 fixedly connected to the outer surface of the sliding plate 15, the outer surface of the fixed plate 161 is formed with a plurality of limiting grooves 162 uniformly distributed, the outer surface of the fixing ring plate 12 is symmetrically fixedly connected with a hollow groove plate 163, the inside of the hollow groove plate 163 is slidably connected with the outer surface of the fixed plate 161, the outer surface of the hollow groove plate 163 is formed with a through opening groove 164, the inside of the through opening groove 164 is in communication with the inside of the limiting groove 162.

[0023] Wherein, the setting of the fixing assembly 14 makes the semicircular sliding plate 13 slide to the appropriate position inside the fixing ring plate 12, and then realizes accurate fixing through the cooperation of the trapezoidal plate 142 and the square groove 144; the setting of the limiting assembly 16 plays an effective limiting role on the sliding plate 15, ensuring that the sliding plate 15 can stably stay after sliding to the predetermined position on the vertical rod main body 10; at the same time, the combined design of the T-shaped plate 17 and the extrusion plate 18, together with the elastic effect of the second spring 19, makes the formwork structure have better adaptability and stability when dealing with different sizes of cantilever members; when it is necessary to support the cantilever member, the operator can adjust the position of the semicircular sliding plate 13 on the fixing ring plate 12 according to the actual demand, and then fix it through the fixing assembly 14, and then slide the sliding plate 15 to the appropriate position and limit it through the limiting assembly 16. This design not only improves the flexibility and efficiency of the formwork, but also greatly enhances the safety and reliability in the construction process.

[0024] Preferably, the end of the extrusion plate 18 away from the T-shaped plate 17 corresponds to the inclined end surface of the trapezoidal plate 142, the end of the extrusion plate 18 away from the T-shaped plate 17 corresponds to the inside of the through opening groove 164, and the end of the extrusion plate 18 away from the T-shaped plate 17 corresponds to the inside of the limiting groove 162.

[0025] It should be noted that the movement of the T-shaped plate 17 drives the movement of the extrusion plate 18, and the end of the extrusion plate 18 away from the T-shaped plate 17 will be in turn in contact with the inclined end surface of the trapezoidal plate 142 for extrusion, and then inserted into the inside of the limiting groove 162 through the inside of the through opening groove 164, so that the sliding of the trapezoidal plate 142 and the position of the fixed plate 161 in the hollow groove plate 163 can be accurately controlled during the movement of the extrusion plate 18, thereby realizing the stable fixing and flexible adjustment of the entire formwork structure.

[0026] In use, first, the vertical rod body 10 is placed in a predetermined position, then the cross rod body 11 is inserted through the circular hollow plate 20 and the fixed ring plate 12, then the T-shaped plate 17 is pulled, the movement of the T-shaped plate 17 stretches the second spring 19, the movement of the T-shaped plate 17 drives the extrusion plate 18 to move, the end of the extrusion plate 18 away from the T-shaped plate 17 is extracted from the inside of the limiting slot 162, then extracted from the inside of the through slot 164, until no longer contacts and extrudes the trapezoidal plate 142, under the elastic force of the first spring 143, the trapezoidal plate 142 slides in the first sliding groove 141, until extracted from the square slot 144, at this time the semicircular sliding plate 13 can slide freely in the fixed ring plate 12, then according to the size of the cross rod body 11, the semicircular sliding plate 13 is pushed to slide in the fixed ring plate 12, when sliding to the appropriate position, the T-shaped plate 17 is loosened, and moves under the action of the second spring 19 until the extrusion plate 18 is moved to the position of the trapezoidal plate 142 and contacts and extrudes it, the trapezoidal plate 142 slides in the first sliding groove 141 after being extruded to overcome the elastic force of the first spring 143, until reinserted into the corresponding square slot 144, realizing the fixation of the semicircular sliding plate 13, at this time the semicircular sliding plate 13 preliminarily clamps the cross rod body 11; then the sliding plate 15 is slid, the fixed plate 161 slides in the hollow slot plate 163, when sliding to the appropriate position, the T-shaped plate 17 is loosened again, and resets under the action of the second spring 19 to drive the extrusion plate 18 to pass through the through slot 164 in turn and insert into the corresponding limiting slot 162, so as to limit and fix the sliding plate 15, at this time the sliding plate 15 and the semicircular sliding plate 13 jointly act on the cross rod body 11, realizing the stable clamping and supporting of the cross rod body 11. Embodiment 2

[0027] Referring to Figures 1-7 , the second embodiment of the application, different from the previous embodiment, provides a building roof large-span cantilever component formwork, which comprises a stabilizing component, which comprises a circular hollow plate 20 arranged outside the cross rod body 11, and a triangular assembly 21 arranged between the outer surface of the circular hollow plate 20 and the outer surface of the sliding plate 15, the triangular assembly 21 being used for stably supporting the cross rod body 11 Specifically, the triangular assembly 21 comprises fixed blocks 211 fixedly connected to the outer surface of the circular hollow plate 20, fixed rods 212 fixedly connected to the outer surface of the fixed blocks 211, and long strip plates 213 rotatably connected to the outer surface of the fixed rods 212, and the ends of the long strip plates 213 away from the circular hollow plate 20 are rotatably connected to the outer surface of the sliding plate 15.

[0028] The triangular assembly 21 connects the circular hollow plate 20 and the long strip plate 213 through the fixing block 211, and then uses the fixing rod 212 as the rotating fulcrum of the long strip plate 213, so that the long strip plate 213 can adaptively rotate according to the position change of the sliding plate 15, and the long strip plate 213, the horizontal rod body 11 and the vertical rod body 10 form a triangular support structure. The triangular support structure has very high stability, can effectively disperse and bear the load from the horizontal rod body 11, thereby greatly enhancing the stability and anti-deformation ability of the entire formwork structure, effectively dispersing the pressure borne by the horizontal rod body 11, avoiding structural damage caused by local stress concentration, and improving the safety of construction and the stability of the formwork.

[0029] In use, when the sliding plate 15 adjusts and moves, the long strip plate 213 rotates around the fixing rod 212. Since the end of the long strip plate 213 away from the circular hollow plate 20 is rotationally connected to the outer surface of the sliding plate 15, the rotation of the long strip plate 213 can adapt to the position change of the sliding plate 15 in real time, and always maintains the triangular support structure formed with the horizontal rod body 11 and the vertical rod body 10. In this process, the triangular assembly 21 effectively disperses the load on the horizontal rod body 11 to the vertical rod body 10 through its unique structural design, greatly reducing the pressure burden of the single support point. At the same time, the triangular support structure also has good anti-deformation ability, and can maintain the overall stability and integrity of the structure even when subjected to a larger external force, thereby ensuring the safety during construction and the long-term stability of the formwork. In addition, the triangular assembly 21 makes the entire formwork structure more flexible and variable, and can adapt to the formwork requirements of cantilever members of different sizes and shapes, thereby improving the construction efficiency and formwork quality. Embodiment 3

[0030] Reference Figures 1-7 For the third embodiment of the present application, unlike the previous embodiment, the embodiment provides a building roof large-span cantilever member formwork, which comprises an auxiliary component, and a reinforcing assembly 30 arranged outside the circular hollow plate 20. The reinforcing assembly 30 is used to enhance the stability of the triangular assembly 21.

[0031] Specifically, the reinforcing assembly 30 comprises an arc-shaped clamping plate 301 symmetrically and slidingly connected to the outer surface of the circular hollow plate 20. The interior of the circular hollow plate 20 is symmetrically provided with a second sliding groove 302. The second sliding groove 302 is fixedly connected with a third spring 303. The end of the third spring 303 away from the second sliding groove 302 is fixedly connected to the outer surface of the arc-shaped clamping plate 301. The end of the long strip plate 213 close to the circular hollow plate 20 is fixedly connected with a semicircular block 31. The outer surface of the semicircular block 31 is in close contact with the top of the arc-shaped clamping plate 301.

[0032] The reinforcing assembly 30 is arranged so that when the sliding plate 15 is moved, the two long plates 213 are rotated around the fixed rod 212, and then the semicircular block 31 is moved, the semicircular block 31 extrudes the arc-shaped clamping plate 301, and the arc-shaped clamping plate 301 is slid on the circular hollow plate 20 to the direction of the second sliding groove 302, and the third spring 303 is compressed, the two arc-shaped clamping plates 301 gradually move to the middle, until the arc-shaped clamping plates 301 are attached to the horizontal rod body 11, the force bearing surface of the two long plates 213 is increased, and the stability of the triangular assembly 21 is enhanced.

[0033] In use, when the sliding plate 15 is moved, the two long plates 213 are rotated around the fixed rod 212, the two long plates 213 are rotated to move the semicircular block 31, the semicircular block 31 moves to extrude the arc-shaped clamping plate 301, when the semicircular block 31 extrudes the arc-shaped clamping plate 301, the arc-shaped clamping plate 301 is slid on the circular hollow plate 20 to the direction of the second sliding groove 302, and the third spring 303 is compressed, the third spring 303 is contracted under pressure, so that the two arc-shaped clamping plates 301 gradually move to the middle, until the arc-shaped clamping plates 301 are attached to the horizontal rod body 11, at this time, the arc-shaped clamping plates 301 form clamping and fixing to the horizontal rod body 11, the force bearing surface of the two long plates 213 is increased, and the stability of the triangular assembly 21 is further enhanced.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A formwork support for a large-span cantilever component of a building roof, characterized in that: The assembly includes a detachable component, comprising a pole body (10) and a crossbar body (11). A fixing ring plate (12) is fixedly connected to the outer surface of the pole body (10). A semi-circular sliding plate (13) is slidably connected inside the fixing ring plate (12). A fixing component (14) is provided between the outer surface of the semi-circular sliding plate (13) and the outer surface of the fixing ring plate (12). The fixing component (14) is used to fix the semi-circular sliding plate (13). A sliding plate (15) is symmetrically slidably connected to the outer surface of the pole body (10). A limiting component (16) is provided between the outer surface of the sliding plate (15) and the outer surface of the fixing ring plate (12). The limiting component (16) is used to limit the sliding plate (15). The stabilizing component includes a circular hollow plate (20) disposed outside the crossbar body (11), and a triangular assembly (21) is disposed between the outer surface of the circular hollow plate (20) and the outer surface of the sliding plate (15), the triangular assembly (21) being used to provide stable support for the crossbar body (11); The auxiliary components include a reinforcing assembly (30) disposed outside the circular hollow plate (20), the reinforcing assembly (30) being used to enhance the stability of the triangular assembly (21).

2. The formwork for a large-span cantilevered component of a building roof according to claim 1, characterized in that: The fixing component (14) includes a first sliding groove (141) symmetrically opened on the outer surface of the fixing ring plate (12). A trapezoidal plate (142) is slidably connected inside the first sliding groove (141). A first spring (143) is fixedly connected to the outer surface of the trapezoidal plate (142). One end of the first spring (143) away from the trapezoidal plate (142) is fixedly connected to the inner side of the first sliding groove (141). A plurality of evenly distributed square grooves (144) are opened on the outer surface of the semi-arc sliding plate (13). The interior of the square grooves (144) corresponds to the outer surface of the trapezoidal plate (142).

3. The formwork for a large-span cantilevered component of a building roof according to claim 1, characterized in that: The limiting component (16) includes a fixed plate (161) fixedly connected to the outer surface of the sliding plate (15). The outer surface of the fixed plate (161) is provided with a plurality of evenly distributed limiting grooves (162). The outer surface of the fixed ring plate (12) is symmetrically fixedly connected with hollow groove plates (163). The interior of the hollow groove plate (163) is slidably connected to the outer surface of the fixed plate (161). The outer surface of the hollow groove plate (163) is provided with a through groove (164). The interior of the through groove (164) is connected to the interior of the limiting groove (162).

4. The formwork for a large-span cantilevered component of a building roof according to claim 1, characterized in that: The interior of the semi-circular sliding plate (13) is slidably connected to a T-shaped plate (17), and the outer surface of the T-shaped plate (17) is symmetrically fixedly connected to an extrusion plate (18).

5. The formwork for a large-span cantilevered component of a building roof according to claim 1, characterized in that: The interior of the semi-circular sliding plate (13) is fixedly connected to a second spring (19), and the end of the second spring (19) away from the semi-circular sliding plate (13) is fixedly connected to the outer surface of the T-shaped plate (17).

6. The formwork for a large-span cantilevered component of a building roof according to claim 4, characterized in that: The end of the extrusion plate (18) away from the T-shaped plate (17) corresponds to the inclined end face of the trapezoidal plate (142), the end of the extrusion plate (18) away from the T-shaped plate (17) corresponds to the inside of the through groove (164), and the end of the extrusion plate (18) away from the T-shaped plate (17) corresponds to the inside of the limiting groove (162).

7. The formwork for a large-span cantilevered component of a building roof according to claim 1, characterized in that: The fixed ring plate (12) is a gap double ring plate, and the arc end of the semi-arc sliding plate (13) is located at the gap of the fixed ring plate (12).

8. The formwork for a large-span cantilevered component of a building roof according to claim 1, characterized in that: The triangular assembly (21) includes a fixing block (211) symmetrically fixedly connected to the outer surface of the circular hollow plate (20). A fixing rod (212) is fixedly connected to the outer surface of the fixing block (211). A long strip plate (213) is rotatably connected to the outer surface of the fixing rod (212). One end of the long strip plate (213) away from the circular hollow plate (20) is rotatably connected to the outer surface of the sliding plate (15).

9. The formwork for a large-span cantilevered component of a building roof according to claim 1, characterized in that: The reinforcing component (30) includes an arc-shaped clamp (301) symmetrically slidably connected to the outer surface of the circular hollow plate (20). The circular hollow plate (20) has a second sliding groove (302) symmetrically opened inside. A third spring (303) is fixedly connected inside the second sliding groove (302). One end of the third spring (303) away from the second sliding groove (302) is fixedly connected to the outer surface of the arc-shaped clamp (301).

10. A formwork support for a large-span cantilevered component of a building roof according to claim 9, characterized in that: A semicircular block (31) is fixedly connected to one end of the long strip (213) near the circular hollow plate (20), and the outer surface of the semicircular block (31) is in contact with the top of the arc-shaped clamp (301).

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