Formwork of roof protruding building facade outrigger

Abstract

The utility model discloses a formwork of a roof protruding building facade outrigger, which comprises a pouring formwork, a formwork support and a supporting beam, the formwork support is arranged on a supporting part and comprises a formwork supporting vertical rod and a balcony supporting vertical rod, and the balcony supporting vertical rod is used for supporting an upper-layer cantilever structure connected with the outrigger; the supporting beam comprises a cantilever main beam, the cantilever main beam comprises a connecting part and a supporting part, and the bottom elevation of the supporting part is not lower than the top elevation of the cantilever structure on the same layer. On one hand, the formwork supporting vertical rods and the balcony supporting vertical rods are arranged, the formwork supporting vertical rods reduce pressure on overhanging structures such as a balcony in the construction process, the balcony supporting vertical rods assist in supporting an upper-layer overhanging structure, and the upper-layer overhanging structure is effectively prevented from being damaged due to overlarge loads; on the other hand, by controlling the height of the supporting part, compression of a pouring formwork, a formwork support and concrete grout on the cantilever structure on the same layer is avoided, and the safety and stability of the cantilever structure on the same layer are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cantilever beam construction, and more specifically, to a template for cantilever beams protruding from roof facades of buildings. Background Art

[0002] In modern building construction, cantilever beams are a common building structural element, and their design and construction are of great significance to the safety and stability of the entire building. However, since the cantilever beams extend beyond the main body of the building, it is inconvenient to operate them during the construction process, especially when the climbing frame system is used for the main construction of the building, the extended part of the cantilever beam often becomes an obstacle to the climbing frame. Therefore, in order to ensure the construction progress and work safety, the construction team usually performs a secondary pouring of the cantilever beam after the main building is completed. The secondary pouring requires the construction of pouring formwork and formwork support to ensure the smooth progress of the pouring process.

[0003] Generally, cantilever structures such as balconies of the main building are used to provide auxiliary support for the support beams that support the casting formwork and formwork brackets. The balcony is also a cantilever structure with limited structural strength, and the casting formwork, formwork brackets and casting slurry are heavy. The cantilever structure is easily damaged during auxiliary support, affecting the structural strength of the cantilever structure, leaving safety hazards, and even directly causing the collapse of the balcony. In addition, when casting cantilever beams, since the cantilever beams are usually set on the cantilever structure of the main building, such as balconies, the cantilever structure needs to bear a large load during the casting process. The additional load affects the stability and structural strength of the cantilever structure of this layer. Once handled improperly, it is easy to cause damage to the cantilever structure. What is more serious is that when the structural strength of the cantilever structure is weakened to a certain extent, it may cause the collapse of the entire cantilever structure, which in turn causes serious production accidents.

[0004] The above shortcomings need to be improved. Utility Model Content

[0005] In order to solve or alleviate the problem that when constructing the cantilever beam in the above-mentioned prior art, a large pressure is caused to the cantilever structure of the building main body, one is the upper cantilever structure connected to the cantilever beam, and the other is the same-layer cantilever mechanism supporting the cantilever beam construction template, and the large load causes the cantilever structure to be damaged, the utility model provides a template for the cantilever beam of the roof protruding from the facade of the building.

[0006] The technical solution of the utility model is as follows:

[0007] A formwork for a cantilever beam of a building facade protruding from a roof, comprising a casting formwork, a formwork support, and a support beam, wherein the casting formwork is used for casting the cantilever beam; the formwork support is arranged on a support portion, and the formwork support includes a formwork support vertical bar for supporting the casting formwork, and a balcony support vertical bar is arranged on a first side of the formwork support vertical bar, and the balcony support vertical bar is used to support an upper cantilever structure connected to the cantilever beam; the support beam includes a cantilever main beam, and the cantilever main beam includes a connecting portion connected to a building main body and a supporting portion extending from the building main body for supporting the formwork support and the casting formwork, and the bottom elevation of the support portion is not lower than the top elevation of the cantilever structure on the same floor.

[0008] Furthermore, a height adjusting member is provided at the bottom of the connecting portion, and the height adjusting member is used to raise the height of the cantilevered main beam.

[0009] Furthermore, the first end of the cantilevered main beam is lower than the second end, and the height difference between the first end and the second end is 0.5% to 1% of the length of the support portion.

[0010] Furthermore, a first connecting member is provided on the connecting portion, and the first connecting member is used to connect the supporting portion and a building body on the same floor.

[0011] Furthermore, a second connecting member is provided on the supporting portion, and the second connecting member connects the supporting portion and the superstructure body.

[0012] Furthermore, the supporting portion of the cantilevered main beam is provided with a longitudinal connecting beam, and the longitudinal connecting beam is used to connect each of the cantilevered main beams and support the formwork support.

[0013] Furthermore, a protective support upright is provided on the second side of the formwork support upright, and the top height of the protective support upright is higher than the top elevation of the cantilever beam.

[0014] Furthermore, the protective support uprights are provided with wall connecting pieces, which extend into the mold cavity of the casting formwork and are connected to the cantilever beam skeleton.

[0015] Furthermore, a main frame is provided above the connection between the support beam and the floor slab, the upper end of the main frame abuts against the upper floor slab, and the lower end of the main frame abuts against the support beam.

[0016] Furthermore, a return frame is provided below the connection between the support beam and the floor slab, the upper end of the return frame abuts against the floor slab connected to the support beam, and the lower end of the return frame abuts against the lower floor slab.

[0017] Furthermore, the support area of ​​the return frame is not smaller than the support area of ​​the main frame, the main frame is close to the first end of the support beam, the first end of the support beam is that end away from the cantilevered portion of the support beam, and the first end of the return frame is aligned with the first end of the main frame.

[0018] Furthermore, the formwork support, the main top frame and the return top frame are all scaffolding, including vertical poles, horizontal poles and longitudinal poles, and the vertical poles, the horizontal poles and the longitudinal poles are connected by connecting buckles.

[0019] Furthermore, a length adjusting piece is provided on the top of the vertical pole, and the length adjusting piece is used to adjust the length of the vertical pole so that the two ends of the vertical pole are tightly pressed against each other.

[0020] Furthermore, the length adjustment member includes a supporting top block, a screw connected to the supporting top block, and an adjustment block threadedly connected to the screw, the top of the supporting top block contacts the upper floor, the bottom of the screw is inserted into the vertical pole, and the adjustment block abuts against the top of the vertical pole.

[0021] Furthermore, a limit seat is arranged at the bottom of the main top frame, and a longitudinal connecting piece is arranged at the bottom of the limit seat, and the longitudinal connecting piece is connected to the same row of vertical poles of the main top frame.

[0022] Furthermore, the limit seat includes a connecting rod inserted into the vertical rod, a supporting block is arranged below the connecting rod, a slot is opened below the supporting block, and the slot is engaged with the longitudinal connecting piece.

[0023] The utility model according to the above scheme has the beneficial effect of:

[0024] 1. The utility model supports the casting formwork and the upper cantilever structure respectively by arranging formwork support uprights and balcony support uprights, so as to evenly distribute the load and vibration during the casting process. The formwork support uprights reduce the pressure on the cantilever structures such as the balcony during the construction process, and the balcony support uprights assist in supporting the upper cantilever structure, thereby effectively preventing the upper cantilever structure from being damaged due to excessive load.

[0025] 2. The utility model controls the height of the supporting part so that the bottom elevation of the supporting part is not lower than the top elevation of the cantilever structure on the same floor, thereby avoiding direct pressure of the casting formwork, formwork support and concrete slurry on the cantilever structure on the same floor, ensuring the safety and stability of the cantilever structure on the same floor, and at the same time can also stably support the formwork support and the casting formwork to ensure the quality of the cantilever beam casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a structural schematic diagram of the support beam in the utility model in the erection state;

[0028] Figure 2 It is a structural schematic diagram of the central top frame of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the return top frame in the utility model;

[0030] Figure 4 It is a structural schematic diagram of the application state of the upright top frame and the return top frame in the utility model;

[0031] Figure 5 It is a structural schematic diagram of the template support in the utility model;

[0032] Figure 6 It is a structural schematic diagram of the application state of the utility model.

[0033] Among them, the figure marks in the figure are: 1. Support beam; 101. Cantilever main beam; 102. Connection part; 103. Support part; 104. Height adjustment member; 105. Longitudinal connecting beam; 106. First connecting member; 107. Second connecting member; 2. Main frame; 201. Vertical pole; 202. Cross bar; 203. Longitudinal pole; 204. Length adjustment member; 205. Limit seat; 206. Longitudinal connecting member; 3. Return frame; 4. Formwork support; 401. Formwork support vertical pole; 402. Balcony support vertical pole; 403. Protection support vertical pole; 404. Wall connection member; 5. Casting formwork; 6. Building main body; 601. Cantilever structure; 602. Cantilever beam. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] It should be noted that when a component is referred to as being "fixed" or "set" or "connected" to another component, it may be located directly or indirectly on the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and should not be construed as limitations on the present technical solution. The terms "first", "second", etc. are only used for the convenience of description and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0036] like Figure 6As shown, a formwork for a cantilever beam of a roof protruding from the exterior facade of a building described in an embodiment of the utility model includes a casting formwork 5, a formwork bracket 4, and a support beam 1, wherein the casting formwork 5 is used to cast the cantilever beam 602; the formwork bracket 4 is arranged on the support portion 103, and the formwork bracket 4 includes a formwork support vertical rod 401 for supporting the casting formwork 5, and a balcony support vertical rod 402 is arranged on the first side of the formwork support vertical rod 401, and the balcony support vertical rod 402 is used to support the upper cantilever structure 601 connected to the cantilever beam 602; the support beam 1 includes a cantilever main beam 101, and the cantilever main beam 101 includes a connecting portion 102 connected to the building body 6 and a supporting portion 103 extending from the building body 6 for supporting the formwork bracket 4 and the casting formwork 5, and the bottom elevation of the support portion 103 is not lower than the top elevation of the cantilever structure 601 on the same floor.

[0037] During the construction process, the support beam 1 is first built, and the connecting portion 102 of the support beam 1 is connected to the building body 6. The support portion 103 extends out of the building body 6, and the bottom elevation of the support portion 103 is not lower than the top elevation of the cantilever structure 601 on the same floor. Then, the formwork support bracket 4 is installed on the support portion 103 of the support beam 1, and the formwork support vertical rod 401 is set below the casting formwork 5 to support the casting formwork 5. The balcony support vertical rod 402 is set below the upper cantilever structure 601 to support the upper cantilever structure 601 connected to the cantilever beam 602. Next, the casting formwork 5 matching the size and shape of the cantilever beam 602 is designed and manufactured to ensure that it can accurately form the required cantilever beam 602 structure. After the casting formwork 5 is installed, concrete is poured in the casting formwork 5 to form the cantilever beam 602 structure. After the concrete is poured, wait for it to solidify and reach the design strength. After the concrete is solidified, the casting formwork 5, the formwork support 4 and the support beam 1 are removed to complete the construction process of the entire cantilever beam 602.

[0038] In this embodiment, on the one hand, by setting the template support vertical pole 401 and the balcony support vertical pole 402, respectively supporting the casting template 5 and the upper cantilever structure 601, the load and vibration during the casting process can be evenly distributed. The template support vertical pole 401 reduces the pressure on the balcony and other cantilever structures 601 during the construction process, and the balcony support vertical pole 402 assists in supporting the upper cantilever structure 601, effectively preventing the upper cantilever structure 601 from being damaged due to excessive load. On the other hand, by controlling the height of the support part 103, the bottom elevation of the support part 103 is not lower than the top elevation of the cantilever structure 601 on the same floor, thereby avoiding the direct pressure of the casting template 5, the template support 4 and the concrete slurry on the cantilever structure 601 on the same floor, ensuring the safety and stability of the cantilever structure 601 on the same floor, and at the same time, the template support 4 and the casting template 5 can be stably supported to ensure the quality of the cantilever beam 602 casting.

[0039] like Figure 1 and Figure 4As shown, in a preferred embodiment, a height adjusting member 104 is provided at the bottom of the connecting portion 102 , and the height adjusting member 104 is used to raise the height of the cantilevered main beam 101 .

[0040] During construction, the construction personnel select a height adjustment member 104 of a suitable size according to the height of the cantilever structure 601 on the same floor, place the height adjustment member 104 at a preset position, then place the cantilever main beam 101 on the height adjustment member 104, and connect the connecting portion 102 of the cantilever main beam 101 to the height adjustment member 104 and the building main body 6 on the same floor, which is generally a floor slab. The height adjustment member 104 adjusts the height of the cantilever main beam 101 to ensure that the bottom elevation of the support portion 103 is not lower than the top elevation of the cantilever structure 601 on the same floor.

[0041] By controlling the height of the cantilever main beam 101 through the height adjustment member 104, the construction personnel can better control the load distribution during the construction process, reduce the pressure on the cantilever structure 601 on the same floor, and thus improve the safety and stability of the entire structure. In addition, the height adjustment member 104 can be selected according to the specific conditions and construction requirements of the building body 6, can adapt to different building environments and design requirements, and has good adaptability and flexibility.

[0042] In actual application, the height adjustment member 104 can be connected to the connecting plate as a whole, that is, the cantilever main beam 101 is an inverted stepped structure as a whole. The step height of the height adjustment member 104 is 400mm, so that the bottom elevation of the support part 103 is higher than the top elevation of most cantilever structures 601, and the step height can also be customized according to actual construction requirements.

[0043] In a preferred embodiment, the first end of the cantilevered main beam 101 is lower than the second end, and the height difference between the first end and the second end is 0.5% to 1% of the length of the support portion 103 .

[0044] During the construction process, the construction personnel select the height adjustment member 104 of appropriate size, the upper surface of the height adjustment member 104 is inclined, or the height of the height adjustment member 104 near the first end of the connection part 102 is less than the height of the height adjustment member 104 at the other end. Then, the connection 102 of the cantilevered main beam 101 is fixed to the building body 6, and the height adjustment member 104 causes the second end of the cantilevered main beam 101 to tilt, so that the entire cantilevered main beam 101 presents a predetermined tilt angle. By making the cantilevered main beam 101 tilted, it helps to balance the bending deformation of the cantilevered end, thereby preventing the cantilevered main beam 101 from bending downward due to the load, and improving the structural stability of the cantilevered main beam 101.

[0045] like Figure 1As shown, in a preferred embodiment, a first connecting member 106 is provided on the connecting portion 102 , and the first connecting member 106 is used to connect the supporting portion 103 and the building body 6 on the same floor.

[0046] During the construction process, first, according to the support requirements of the support beam 1 structure, the position of the connection point is pre-determined on the floor slab, so that the first connection members 106 can be reasonably distributed to stably support the cantilevered main beam 101. Subsequently, multiple first connection members 106 are arranged on the connection part 102, and the first connection members 106 can be made of high-strength materials to ensure the stability and safety of the connection. During installation, the first connection members 106 penetrate the floor slab connecting the support part 103, the height adjustment member 104 and the building body 6, and the first connection members 106 are ensured to be tightly combined with each part by welding, fastener connection or other reliable methods.

[0047] By arranging a plurality of first connectors 106 at the connection portion 102, the connection between the cantilever main beam 101 and the building body 6 is stabilized, effectively preventing structural deformation or damage caused by external loads, thereby stably supporting the casting formwork 5, the formwork support 4 and the concrete slurry. Secondly, the connector runs through the support portion 103, the height adjustment member 104 and the floor slab to form an integral structure, which enhances the rigidity and stability of the entire support beam 1 structure, improves the safety during the construction process, and ensures the quality of the casting of the cantilever beam 602.

[0048] like Figure 1 As shown, in a preferred embodiment, a second connecting member 107 is provided on the support portion 103, and the second connecting member 107 connects the support portion 103 and the superstructure body 6. Specifically, the second connecting member 107 can be a steel wire rope or a connecting rod.

[0049] During the construction process, the position and quantity of the second connector 107 are determined according to the design drawings, and are marked at appropriate positions of the support 103, and then the second connector 107 is accurately installed on the support 103 to ensure that the connector fits tightly with the support 103. Then, the other end of the second connector 107 is connected to the upper beam of the building body 6, usually by bolts, welding or other fastening methods.

[0050] In this embodiment, by providing a second connecting member 107 on the supporting portion 103 and connecting it to the upper cross beam of the building body 6, the connection strength between the supporting portion 103 and the building body 6 is enhanced, thereby effectively improving the stability and safety of the entire supporting structure, being able to resist the influence of external loads and vibrations, and ensuring the reliability and durability of the cantilever structure 601 during use.

[0051] like Figure 1 and Figure 6As shown, in a preferred embodiment, the supporting portion 103 of the cantilevered main beam 101 is provided with a longitudinal connecting beam 105 , and the longitudinal connecting beam 105 is used to connect each cantilevered main beam 101 and support the formwork support 4 .

[0052] During the construction process, the position of the cantilever main beam 101 is first determined according to the design, and the prefabricated longitudinal connecting beam 105 is connected to each cantilever main beam 101. During the connection, the horizontality and verticality of the longitudinal connecting beam 105 are adjusted to meet the requirements of the supporting formwork support 4. High-strength connecting parts can be used to ensure that the connection is firm and reliable. After the connection is completed, the connection part 102 is reinforced and protected to ensure construction safety.

[0053] In this embodiment, the longitudinal connecting beam 105 is provided to connect the cantilevered main beam 101 and support the formwork support 4. The use of the longitudinal connecting beam 105 enhances the integrity between the cantilevered main beams 101 and improves the stability and bearing capacity of the structure. Secondly, through the support of the longitudinal connecting beam 105, the formwork support 4 can obtain a more uniform force distribution, thereby reducing the deformation and damage of the formwork caused by uneven force.

[0054] like Figure 5 and Figure 6 As shown, in a preferred embodiment, a protective support upright 403 is provided on the second side of the formwork support upright 401 , and the top height of the protective support upright 403 is higher than the top elevation of the cantilever beam 602 .

[0055] During the construction process, the position of the protection support pole 403 is first determined. The protection support pole 403 is located on the second side of the template support pole 401, that is, the side away from the building body 6, to ensure that its top height is higher than the top elevation of the cantilever beam 602, and the height difference with the cantilever beam 602 is 1.2m, that is, higher than the center of gravity of the construction workers. Then, the protection support pole 403 is firmly connected to the horizontal bar 202 and the longitudinal bar 203 using appropriate connectors such as connecting buckles to ensure its stability and safety.

[0056] In this embodiment, by setting the protective support pole 403 higher than the cantilever beam 602 and with a height difference of 1.2m from the cantilever beam 602, accidents such as falling are prevented, and the safety of the construction workers is effectively protected. In addition, the firm connection between the protective support pole 403 and the crossbar 202 and the longitudinal bar 203 also ensures the stability of the entire formwork support 4, further enhancing the safety during the construction process. In actual application, the height difference between the protective support pole 403 and the cantilever beam 602 can be set according to actual construction needs, generally not less than 1.2m.

[0057] like Figure 5 and Figure 6As shown, in a preferred embodiment, a wall connecting member 404 is provided on the protective support upright 403, and the wall connecting member 404 extends into the mold cavity of the casting template 5 and is connected to the cantilever beam frame.

[0058] During the construction process, first determine the installation position of the wall connecting piece 404 on the protective support upright 403 to ensure that it can be effectively connected to the cantilever beam skeleton (rebar cage) in the model cavity of the casting template 5. Then, fix the wall connecting piece 404 to the protective support upright 403 by connecting buckles, tying or welding, and ensure that it is stable and reliable. Then, the part of the wall connecting piece 404 that extends into the model cavity is tightly connected to the cantilever beam skeleton, and the wall connecting piece 404 is connected to the cantilever beam skeleton by tying or welding. In this example, the cantilever beam 602 is stepped and cast in two times. The widths of the two castings are different. The first casting area is located below the second casting area, and the width of the first casting area is larger to ensure the casting quality. The wall connecting piece 404 goes deep into the two casting areas from top to bottom. After the first casting is completed, the first casting part is integrated with the cantilever structure 601 such as the balcony. At this time, the wall connecting piece 404 supports the cantilever beam 602 through the protective support uprights 403 on the one hand, and pulls the protective support uprights 403 through the cantilever beam 602 on the other hand to prevent the protective support uprights 403 from falling over. After the first pouring part solidifies, the second pouring is carried out. At this time, the wall connecting piece 404 is used to connect the first pouring part and the second pouring part. After the pouring is completed, the excess part of the wall connecting piece 404 can be cut off. In actual application, the number of pouring times of the cantilever beam 602 can be determined according to the construction requirements and the construction environment, that is, it can be cast and formed once or multiple times. It should be noted that no matter how many times the pouring is performed, the wall connecting piece 404 goes deep into each pouring area.

[0059] The wall connecting piece 404 extends into the mold cavity of the casting template 5 and is connected to the cantilever beam skeleton. On the one hand, it enhances the overall stability of the template support 4. On the other hand, during the casting process of the cantilever beam 602, the wall connecting piece 404 can assist in pulling the cantilever beam 602 and share part of its load, thereby reducing the burden of the template support upright 401, improving the bearing capacity of the entire template support 4, and reducing the load on the balcony to ensure the stability of the balcony. In addition, the tight connection between the wall connecting piece 404 and the skeleton of the cantilever beam 602 can also effectively prevent the template support 4 from displacement or deformation during the casting process, ensuring the stability of the template support 4. In addition, the wall connecting piece 404 can tie the concrete poured twice, so that the concrete poured twice can be tightly connected to prevent structural defects caused by loose connection.

[0060] like Figures 2 to 4 As shown, in a preferred embodiment, a main frame 2 is arranged above the connection between the support beam 1 and the floor slab, the upper end of the main frame 2 abuts against the upper floor slab, and the lower end of the main frame 2 abuts against the support beam 1.

[0061] A return frame 3 is provided below the connection between the support beam 1 and the floor slab, the upper end of the return frame 3 abuts against the floor slab connected to the support beam 1, and the lower end of the return frame 3 abuts against the lower floor slab.

[0062] The supporting area of ​​the return frame 3 is not smaller than the supporting area of ​​the main frame 2. The main frame 2 is close to the first end of the support beam 1, which is the end of the support portion 103 away from the cantilevered main beam 101. The first end of the return frame 3 is aligned with the first end of the main frame 2.

[0063] During the construction process, the connection position between the support beam 1 and the floor slab is first determined, and the main frame 2 and the return frame 3 are respectively arranged above and below the main frame 2. The main frame 2 is arranged directly above the connection between the support beam 1 and the floor slab, and its upper end is tightly abutted against the upper floor slab, and the lower end is connected to the support beam 1, so that the main frame 2 can withstand the vertical load from the cantilevered part of the cantilever beam 602. Next, the return frame 3 is arranged below the connection between the support beam 1 and the floor slab, and its upper end is abutted against the floor slab connected to the support beam 1, and the lower end is connected to the lower floor slab. The return frame 3 supports the floor slab connected to the support beam 1 through the lower floor slab, and shares the load of the connected floor slab through the lower floor slab, reducing the deformation of the floor slab connected to the support beam 1, thereby indirectly maintaining the stability of the support beam 1. In addition, the support area of ​​the return frame 3 is not less than the support area of ​​the main frame 2, and the support area is larger, ensuring that the return frame 3 can provide sufficient support during the construction of the cantilever beam 602 to prevent the support beam 1 from tilting or displacement.

[0064] In this embodiment, by arranging the main frame 2 and the return frame 3 above and below the connection between the support beam 1 and the floor slab, the stability and safety of the support beam 1 during the construction process are improved. The main frame 2 directly bears the vertical load of the cantilevered part of the support beam 1, while the return frame 3 provides additional support force to ensure that the entire structure remains stable during the construction process. The main frame 2 and the return frame 3 effectively disperse the load at the connection of the support beam 1, reduce the local stress concentration of the support beam 1, and thus reduce the risk of the support beam 1 tilting or breaking. At the same time, since the support area of ​​the return frame 3 is not less than that of the main frame 2, the support area of ​​the return frame 3 is larger, which can provide greater support force to ensure the stability of the connection floor slab, and the part of the support area of ​​the return frame 3 that exceeds the support area of ​​the main frame 2 can generate torque, and the torque can be adjusted to start the support effect on the support beam 1 by adjusting the position, further preventing the support beam 1 from tilting. In the extension direction of the support beam 1, the second end of the return frame 3 exceeds the second end of the main frame 2. In addition, the top frame system of the support beam 1 can maintain the stability of the formwork support 4 and the casting formwork 5, which improves construction safety while ensuring construction efficiency and casting quality.

[0065] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in a preferred embodiment, the formwork support 4, the main frame 2 and the return frame 3 are all scaffolds, including vertical poles 201, horizontal poles 202 and longitudinal poles 203, and the vertical poles 201, horizontal poles 202 and longitudinal poles 203 are connected by connecting buckles. In actual application, steel pipe scaffolds, bamboo scaffolds, etc. can be used, and the specific materials of the scaffolds can be selected according to the construction conditions.

[0066] A length adjusting member 204 is provided at the top of the vertical pole 201, and the length adjusting member 204 is used to adjust the length of the vertical pole 201 so that the two ends of the vertical pole 201 are tightly abutted. The length adjusting member 204 includes a supporting top block, a screw connected to the supporting top block, and an adjusting block threadedly connected to the screw. The top of the supporting top block contacts the upper floor slab, the bottom of the screw is inserted into the vertical pole 201, and the adjusting block abuts against the top of the vertical pole 201.

[0067] During construction, when building the main frame 2, the construction workers first determine the initial length of the pole 201 according to the construction drawings and the actual situation on site. Then, the pole 201 is placed in the installation position, and the length of the pole 201 is adjusted using the length adjustment member 204 to ensure that the two ends of the pole 201 of the main frame 2 can be tightly against the upper floor and the support beam 1. The construction workers change the position of the adjustment block on the screw by rotating the adjustment block, thereby adjusting the effective length of the pole 201. In actual application, the height adjustment member 104 can also use a hydraulic telescopic rod, an electric telescopic rod, etc. Build the back frame 3 and the formwork support 4 in the same way.

[0068] By setting a length adjustment member 204 on the top of the vertical pole 201, the length of the vertical pole 201 can be precisely adjusted, thereby ensuring the close fit between the top frame and the upper floor and the support beam 1, improving the flexibility and adaptability of the vertical pole 201 during the construction process, and enabling the vertical pole 201 to adapt to different construction environments and structural requirements. The length adjustment member 204 allows the two ends of the vertical pole 201 to be evenly pressed together, preventing the problem of insufficient support force or structural instability caused by the mismatch of the length of the vertical pole 201. In addition, the length adjustment member 204 also helps to improve construction efficiency, because construction personnel can quickly adjust the length of the vertical pole 201 as needed, reducing the time and cost of remaking or replacing the vertical pole 201 due to inappropriate length.

[0069] like Figure 2 and Figure 4 As shown, in a preferred embodiment, a limit seat 205 is provided at the bottom of the main frame 2, and a longitudinal connector 206 is provided at the bottom of the limit seat 205, and the longitudinal connector 206 is connected to the same row of vertical poles 201 of the main frame 2. The limit seat 205 includes a connecting rod inserted into the vertical pole 201, a support block is provided below the connecting rod, and a slot is provided below the support block, and the slot is engaged with the longitudinal connector 206.

[0070] During construction, the construction personnel first place the longitudinal connector 206 at a predetermined position according to the construction drawings and design requirements, and then place the limit seat 205 on the longitudinal connector 206, and the slot of the support block is engaged with the longitudinal connector 206. The longitudinal connector 206 is arranged in the longitudinal direction, and the vertical poles 201 in the same row are connected to the same longitudinal connector 206, thereby connecting the vertical poles 201 in the same row of the main top frame 2. During the connection process, the limit seat 205 is pressed against the longitudinal connector 206, or the construction personnel connect the limit seat 205 to the longitudinal connector 206 through fasteners or welding.

[0071] By arranging the limit seat 205 and the longitudinal connector 206 at the bottom of the main frame 2, the vertical poles 201 of the main frame 2 are precisely positioned in the horizontal direction, thereby preventing displacement or tilting caused by external factors during the construction process. The longitudinal connector 206 connects the vertical poles 201 in the same row, thereby enhancing the overall rigidity and bearing capacity of the frame, so that the frame can more effectively bear the vertical load of the cantilevered part of the cantilever beam 602.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A formwork for a roof protruding from a building facade beam, characterized in that: include: A casting template, wherein the casting template is used for casting the cantilever beam; A formwork support, wherein the formwork support is arranged on the support portion, the formwork support comprises a formwork support vertical rod for supporting the casting formwork, a balcony support vertical rod is arranged on a first side of the formwork support vertical rod, and the balcony support vertical rod is used to support an upper cantilever structure connected to a cantilever beam; The supporting beam comprises a cantilevered main beam, wherein the cantilevered main beam comprises a connecting portion connected to the main building body and a supporting portion extending out of the main building body for supporting the formwork support and the casting formwork, wherein the bottom elevation of the supporting portion is not lower than the top elevation of the cantilevered structure on the same floor.

2. A formwork for a roof protruding from a building facade cantilever beam according to claim 1, characterized in that: A height adjusting member is provided at the bottom of the connecting portion, and the height adjusting member is used to raise the height of the cantilevered main beam.

3. A formwork for a roof protruding from a building facade cantilever beam according to claim 1, characterized in that: The first end of the cantilevered main beam is lower than the second end, and the height difference between the first end and the second end is 0.5% to 1% of the length of the support portion.

4. A formwork for a roof protruding from a building facade cantilever beam according to claim 1, characterized in that: The connecting part is provided with a first connecting piece, and the first connecting piece is used to connect the supporting part and the building body on the same floor.

5. A formwork for a roof protruding from a building facade cantilever beam according to claim 1, characterized in that: The support part is provided with a second connecting member, and the second connecting member connects the support part and the superstructure body.

6. A formwork for a roof protruding from a building facade cantilever beam according to claim 1, characterized in that: The supporting portion of the cantilevered main beam is provided with a longitudinal connecting beam, and the longitudinal connecting beam is used to connect each of the cantilevered main beams and support the formwork support.

7. A formwork for a roof protruding from a building facade cantilever beam according to claim 1, characterized in that: The first end of the cantilevered main beam is lower than the second end, and the height difference between the first end and the second end is 0.5% to 1% of the length of the support portion.

8. A formwork for a roof protruding building facade beam according to any one of claims 1 to 7, characterized in that: A protective support upright is arranged on the second side of the formwork support upright, the top height of the protective support upright is higher than the top elevation of the cantilever beam, and a wall connecting piece is arranged on the protective support upright, and the wall connecting piece extends into the model cavity of the casting formwork and is connected to the cantilever beam frame.

9. A formwork for a roof protruding building facade beam according to any one of claims 1 to 7, characterized in that: A main frame is arranged above the connection between the support beam and the floor slab, the upper end of the main frame abuts against the upper floor slab, and the lower end of the main frame abuts against the support beam.

10. A formwork for a roof protruding building facade beam according to any one of claims 1 to 7, characterized in that: A return frame is arranged below the connection between the support beam and the floor slab, the upper end of the return frame abuts against the floor slab connected to the support beam, and the lower end of the return frame abuts against the lower floor slab.

Images