Cantilever beam formwork support

Abstract

The utility model relates to the technical field of cantilever beam pouring structures, solves the problem that in the prior art, a scaffold needs to be built for pouring a cantilever beam, and consequently the engineering efficiency is low, and discloses a cantilever beam formwork supporting frame which comprises a base, a foundation beam and a support set, and the base is fixedly connected with the inner wall of a building structure; one end of the foundation beam is connected with the base, the other end of the foundation beam extends out of the building structure and is parallel to the lower portion of the preset cantilever beam, and the foundation beam is slidably connected to the base in the radial direction. The base is provided with a brake part for limiting the movement of the foundation beam; the support set is arranged on the foundation beam and comprises a plurality of frame columns arranged in an array mode, one ends of the frame columns are connected with the foundation beam, the other ends of the frame columns extend to be connected with the pouring formwork, and the adjacent frame columns are connected through a plurality of transverse rods. The base and the foundation beam can be built in the building structure, and workers do not need to build a scaffold on the periphery of the building structure, so that the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of cantilever beam casting structure, and in particular to a cantilever beam formwork frame. Background Art

[0002] When a cantilever beam structure is set on the facade of a building structure, the formwork support frame is an important auxiliary tool to ensure the concrete pouring quality and construction safety of the cantilever beam. Traditional formwork support frames mostly use steel pipe scaffolding systems such as fastener type, bowl buckle type and disc pin type. Although these systems have good force performance and wide applicability, they also expose many shortcomings in actual construction. For example, the workload of steel pipe erection is large, labor-intensive, time-consuming and material-intensive, which seriously restricts the speed of engineering construction; at the same time, the entire formwork support frame force system is greatly affected by the workers' operating skills, and often does not meet national and local standards, posing hidden dangers to construction safety. Utility Model Content

[0003] In order to improve the defect of the prior art that scaffolding needs to be built to cast cantilever beams, resulting in low engineering efficiency, the present application provides a cantilever beam formwork frame.

[0004] The following technical solutions are adopted:

[0005] A cantilever beam formwork frame comprises a base, a foundation beam and a support group, wherein:

[0006] The base is fixedly connected to the inner wall of the building structure;

[0007] One end of the foundation beam is connected to the base, and the other end extends outward from the building structure and is arranged parallel to the lower side of the preset cantilever beam position. The foundation beam is radially slidably connected to the base;

[0008] The base is provided with a brake member for limiting the movement of the foundation beam;

[0009] The support group is arranged on the foundation beam, and the support group includes a plurality of frame columns arranged in an array, one end of the frame column is connected to the foundation beam, and the other end extends to connect to the casting formwork, and adjacent frame columns are connected by a plurality of cross bars.

[0010] By adopting the above technical solution, the cantilever beam formwork frame is fixedly connected to the inner wall of the building structure through the base, one end of the foundation beam is connected to the base and extends outward, and the bracket group is set on the foundation beam to support the casting formwork. By building the base and foundation beam inside the building structure, the staff does not need to build scaffolding outside the building structure, thereby improving construction efficiency and reducing construction costs. At the same time, it reduces the waste of resources caused by the construction and dismantling of scaffolding, and further saves energy and reduces emissions.

[0011] Optionally, the base includes a bottom plate and a connecting seat body, a sliding groove is provided on the upper surface of the connecting seat body, the base beam is slidably connected in the sliding groove, the brake will include a plurality of fixing bolts, the fixing bolt array passes through the outer wall of the connecting seat body into the sliding groove, and the base beam array is provided with a plurality of fixing holes for the fixing bolts to pass through.

[0012] By adopting the above technical solution, the base includes a bottom plate and a connecting base body, a slide groove is provided on the upper surface of the connecting base body, the foundation beam is slidably connected in the slide groove, and the foundation beam is fixed by fixing bolts and fixing holes. The foundation beam slides radially on the base, which is convenient for adjustment according to the actual position of the cantilever beam, thereby improving the flexibility and accuracy of construction.

[0013] Optionally, the cross-section of the foundation beam is I-shaped, and the cross-section of the slide groove is inverted T-shaped.

[0014] By adopting the above technical solution, the cross section of the foundation beam is I-shaped and the cross section of the chute is inverted T-shaped, ensuring that the foundation beam is stably slidably connected to the chute. The I-shaped and inverted T-shaped cross-sectional designs increase the contact area between the foundation beam and the chute, improving the stability and load-bearing capacity of the connection.

[0015] Optionally, a plurality of auxiliary grooves are provided at intervals on the inner wall of the connecting seat, rollers are rotatably connected in the auxiliary grooves, and the rollers abut against the foundation beam.

[0016] By adopting the above technical solution, auxiliary grooves are provided in the inner wall of the connecting seat, and the connecting rollers are rotated in the auxiliary grooves, and the rollers abut against the foundation beam. The design of the rollers reduces the friction force of the foundation beam during the sliding process, making the sliding of the foundation beam smoother and improving the construction efficiency.

[0017] Optionally, it also includes a tension cable, a direction-changing component and a connection frame, wherein the connection frame is clamped on the outside of the plurality of foundation beams, one end of the tension cable is connected to the connection frame through a hook, and the other end is connected to the base after passing through the direction-changing component.

[0018] By adopting the above technical solution, the tension cable is connected to the foundation beam through the connection frame, connected to the base after passing through the direction-changing component, and fixed by the limit bolts and limit screw holes. The design of the tension cable and the direction-changing component provides additional support for the cantilever beam, effectively preventing the cantilever beam from bending downward due to gravity, and ensuring construction quality and safety.

[0019] Optionally, the tension rope is provided with a limiting bolt, and the base is provided with a plurality of limiting screw holes, and the limiting bolt can be threadedly connected in any of the limiting screw holes.

[0020] Optionally, the tension cable is provided with a limiting ring, and the limiting bolt is rotatably connected to the limiting ring.

[0021] By adopting the above technical solution, the tension cable is provided with a limit ring, the limit bolt is rotatably connected in the limit ring, and can be threadedly connected in the limit screw hole of the base. The tension cable is precisely adjusted and fixed as needed to ensure that the tension of the tension cable meets the construction requirements, thereby improving the accuracy and reliability of the construction.

[0022] Optionally, the direction-changing assembly includes a link, a steering wheel and a plate body, the plate body is arranged on the top inner wall of the building structure at the same level as the base, the steering wheel is rotatably connected to the plate body, the link is arranged between the steering wheel and the connecting frame, and the tension cable passes through the middle part of the link and abuts against the steering wheel.

[0023] By adopting the above technical solution, the direction-changing assembly includes a link, a steering wheel and a plate body, the link is arranged between the steering wheel and the connection frame, and the tension cable passes through the link and abuts against the steering wheel in the middle. Through the steering action of the steering wheel, the tension direction of the tension cable is changed, so that it can better adapt to the structural characteristics of the cantilever beam and improve the supporting effect of the tension cable. At the same time, the design of the link allows multiple tension cables to be bundled and passed through, which improves the construction efficiency.

[0024] In summary, the present application includes at least one of the following beneficial effects:

[0025] 1. By building the base and foundation beam inside the building structure, workers do not need to build scaffolding outside the building structure, thereby improving construction efficiency and reducing construction costs;

[0026] 2. The foundation beam slides radially on the base, which is convenient for adjustment according to the actual position of the cantilever beam, improving the flexibility and accuracy of construction;

[0027] 3. The design of the tension cable and the change-of-direction component provides additional support for the cantilever beam, effectively preventing the cantilever beam from bending downward due to gravity, and ensuring construction quality and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0029] Figure 2 It is a schematic diagram of the enlarged structure at A;

[0030] Figure 3 is a schematic diagram of the side structure of this embodiment;

[0031] Figure 4 It is a schematic diagram of the base, connecting beam and tension cable structure;

[0032] Figure 5It is a schematic diagram of the partial cross-section structure of the base and the connecting beam (the dot-dash line is the symmetry line);

[0033] Figure 6 It is a schematic diagram of the cross-sectional structure of the base from the side;

[0034] Figure 7 This is a schematic diagram of the enlarged structure at point B.

[0035] Explanation of the reference numerals: 1. base; 11. bottom plate; 111. limiting screw hole; 12. connecting seat body; 121. slide groove; 122. auxiliary groove; 123. roller; 124. fixing bolt; 2. foundation beam; 21. fixing hole; 22. connecting frame; 3. bracket group; 31. frame column; 32. cross bar; 33. reinforcing rod; 4. tension cable; 41. limiting ring; 42. limiting bolt; 5. change direction assembly; 51. link; 52. steering wheel; 53. plate body; 531. bracket; 6. building structure; 7. casting formwork. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 To Attachment Figure 7 This application is described in further detail.

[0037] In the prior art, the cantilever beam formwork construction requires the construction of a scaffold outside the building structure 6, so that the workers can build the formwork support 531 and the casting formwork 7 below the preset cantilever beam position. It is not difficult to see that the prior art, firstly, consumes materials and takes time in the process of building the scaffold, and the engineering efficiency is low. Secondly, the workers are working on the suspended scaffold, which poses a safety hazard.

[0038] Reference Figure 1 and Figure 2 Therefore, in order to further improve the efficiency of building the casting formwork 7 of the cantilever beam. The embodiment of the present application discloses a cantilever beam formwork frame, including three parts: a base 1, a foundation beam 2 and a bracket group 3. The base 1 is arranged in the building structure 6, and the base 1 is fixedly connected to the inner wall of the building structure 6. One end of the foundation beam 2 is connected to the base 1, and the other end extends out of the building structure 6, and is arranged below the length direction of the preset cantilever beam. The foundation beam 2 is only slidably connected to the base 1 along its own length direction. The base 1 is provided with a brake to limit the movement of the foundation beam 2. The bracket group 3 is arranged on the foundation beam 2 to support the casting formwork 7. The bracket group 3 includes a plurality of frame columns 31 arranged in an array. One end of the frame column 31 is connected to the foundation beam 2, and the other end extends upward to connect the casting formwork 7. Adjacent frame columns 31 are connected by a plurality of cross bars 32.

[0039] First, the base 1 is installed in the building structure 6, and then the foundation beam 2 is slidably connected to the base 1. The end assembly of the foundation beam 2 is slid out of the facade of the building structure 6, and the frame 22 columns are gradually connected to the extended part, and the frame column 31 is structurally fixed by the crossbeam. As the foundation beam 2 gradually extends outward, the staff only needs to complete the template support construction for the cantilever beam in the building structure 6, saving the scaffolding construction process and increasing the engineering efficiency. At the same time, the waste of resources caused by the construction and disassembly of the scaffolding is reduced, and energy conservation and emission reduction are further achieved.

[0040] Reference Figures 3 to 5 Specifically, the base 1 includes two parts, a bottom plate 11 and a connecting seat body 12. The bottom plate 11 is a basic structure laid flat on the ground inside the building structure 6, and the bottom plate 11 is connected to the building structure 6 by bolts or the like. The connecting seat body 12 is set according to the number of foundation beams 2. The number of foundation beams 2 is set according to the preset cantilever beam width, and two foundation beams 2 are used as a demonstration in this embodiment. There are two connecting seat bodies 12, and the connecting seat body 12 is connected to the bottom plate 11 by a number of bolts. The connecting seat body 12 is a rectangular strip-shaped structure, and the connecting seat body 12 is arranged in the extension surface of the building structure 6 along the length direction of the cantilever beam. A slide groove 121 is provided on the upper surface of the connecting seat body 12, and the slide groove 121 is provided along the length direction of the connecting seat body 12 and passes through both ends of the connecting seat body 12. The foundation beam 2 is radially slidably connected in the slide groove 121. In order to increase the stability of the connection between the foundation beam 2 and the connecting seat body 12, that is, to constrain the other degrees of freedom of the foundation beam 2 except the radial direction. The cross-sectional structure of the foundation beam 2 may be I-shaped, inverted C-shaped, dovetail-shaped, etc. In the present embodiment, the foundation beam 2 is preferably an I-shaped steel, which has sufficient structural strength and low production cost, and the bottom is an inverted T-shaped. The cross-sectional shape of the slide 121 is an inverted T-shaped corresponding to the lower half of the foundation beam 2. The lower half of the foundation beam 2 is slidably connected in the slide 121. Two rows of fixing holes 21 are provided on the inner wall at the bottom of the foundation beam 2. Several fixing holes 21 are arranged at intervals along the length direction of the foundation beam 2. The brake member is a plurality of fixing bolts 124 that are arranged in an array and pass through the outer wall of the connection seat body 12. The fixing bolts 124 vertically pass through the outer wall of the connection seat body 12 into the slide 121, and the fixing bolts 124 can be inserted into any fixing hole 21. The fixing bolts 124 are threadedly connected to the connection seat body 12. When the foundation beam 2 slides to a suitable position relative to the connection seat body 12, the foundation beam 2 is fixed by a plurality of fixing bolts 124.

[0041] Reference Figure 5 and Figure 6 Furthermore, in order to make the foundation beam 2 slide more smoothly relative to the connection seat body 12, a plurality of auxiliary grooves 122 are provided at intervals on the inner wall of the connection seat body 12, and the auxiliary grooves 122 are rotatably connected to rollers 123. The upper surface of the roller 123 abuts against the lower surface of the foundation beam 2.

[0042] Furthermore, the frame columns 31 are connected to the foundation beams 2 by means of bolts or welding, and the cross bars 32 are also connected to adjacent frame columns 31 by means of bolts or welding.

[0043] Furthermore, reinforcing rods 33 are arranged on the foundation beam 2, and two reinforcing rods 33 form a group, and each group of reinforcing rods 33 is arranged in an X-shaped structure. One end of the reinforcing rod 33 is connected to the foundation beam 2 by bolts, and the other end is connected to the end of the corresponding frame column 31 away from the foundation beam 2.

[0044] Reference Figure 3 and Figure 7 When the length of the cantilever beam exceeds a certain range, due to the effect of gravity, even if the foundation beam 2 and the support group 3 are set, the end of the cantilever beam may still bend downward. This degree of curvature may cause an unknown decrease in structural strength in the project. Therefore, the cantilever beam formwork frame also includes a tension cable 4, a change-of-direction component 5 and a connecting frame 22. The connecting frame 22 is generally a rectangular frame structure, and the connecting frame 22 is clamped on the outside of several foundation beams 2. One end of the tension cable 4 is connected to the connecting frame 22 through a hook, and the hook is preferably an automatic buckle D-type hook. The other end of the tension cable 4 is connected to the base plate 11 after passing through the change-of-direction component 5.

[0045] Reference Figure 5 and Figure 6 Furthermore, the tension cable 4 is provided with a limit ring 41, and a limit bolt 42 is passed through the limit ring 41, and the limit bolt 42 rotates relative to the limit ring 41. One end of the tension cable 4 provided with the limit ring 41 passes through the direction-changing component 5 and is connected to the bottom plate 11 through the limit bolt 42. A plurality of limit screw holes 111 are arranged in an array on the upper surface of the bottom plate 11 parallel to the length direction of the foundation beam 2.

[0046] Reference Figure 7 Furthermore, the direction-changing assembly 5 includes a link 51, a steering wheel 52 and a plate 53. The plate 53 and the base plate 11 are arranged at the same level of the building structure 6, and the plate 53 is arranged on the top inner wall of the building structure 6 relative to the base plate 11. The plate 53 is connected to the building structure 6 by bolt connection or the like. The steering wheel 52 is connected to the plate 53 through a bracket 531. The steering wheel 52 rotates relative to the bracket 531. The middle part of the outer wall of the steering wheel 52 is recessed inward. The tension cable 4 abuts against the steering wheel 52. The link 51 is arranged between the steering wheel 52 and the connecting frame 22. When multiple tension cables 4 are provided, several tension cables 4 pass through the link 51 for bundling and then enter the steering wheel 52.

[0047] Preferably, a plurality of connection frames 22 are provided, and a plurality of connection frames 22 are arranged at intervals at one end of the foundation beam 2 away from the connection seat body 12. Each connection frame 22 is connected to two tension cables 4. Every two tension cables 4 form a group, and each group of tension cables 4 is provided with a steering wheel 52 and a link 51.

[0048] The implementation principle of a cantilever beam formwork frame in the embodiment of the present application is:

[0049] During construction, the base 1 and the plate 53 are first installed in the building structure 6, and then the foundation beam 2 is slidably connected to the base 1, and the end assembly of the foundation beam 2 is slid out of the facade of the building structure 6, and the frame 22 columns are gradually connected to the extended part, and the frame column 31 is structurally fixed by the crossbeam. Among them, before moving the foundation beam 2, a connection frame 22 is required to be set at the end of the foundation beam 2, and one end of the tension cable 4 is hooked on the connection frame 22. After the construction of the foundation beam 2 and the bracket group 3, as well as the casting formwork 7 is completed, a number of tension cables 4 are sequentially passed through the corresponding links 51, and connected to the plate 53 after passing through the steering wheel 52. In this way, the construction of the cantilever beam formwork frame is completed.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cantilever beam formwork frame, characterized in that: It comprises a base (1), a foundation beam (2) and a bracket group (3), wherein: The base (1) is fixedly connected to the inner wall of the building structure (6); One end of the foundation beam (2) is connected to the base (1), and the other end extends outside the building structure (6) and is arranged parallel to the bottom of the preset cantilever beam position. The foundation beam (2) is radially slidably connected to the base (1); The base (1) is provided with a brake component for limiting the movement of the foundation beam (2); The support group (3) is arranged on the foundation beam (2), and the support group (3) comprises a plurality of frame columns (31) arranged in an array, one end of the frame column (31) is connected to the foundation beam (2), and the other end extends to connect to the casting formwork (7), and adjacent frame columns (31) are connected via a plurality of cross bars (32); It also includes a tension cable (4), a direction-changing component (5) and a connection frame (22), wherein the connection frame (22) is clamped on the outside of the plurality of foundation beams (2), one end of the tension cable (4) is connected to the connection frame (22) via a hook, and the other end is connected to the base (1) after passing through the direction-changing component (5).

2. The cantilever beam formwork according to claim 1, characterized in that: The base (1) comprises a bottom plate (11) and a connecting seat body (12); a slide groove (121) is provided on the upper surface of the connecting seat body (12); the base beam (2) is slidably connected in the slide groove (121); the brake comprises a plurality of fixing bolts (124); an array of the fixing bolts (124) passes through the outer wall of the connecting seat body (12) and enters the slide groove (121); and the array of the base beam (2) is provided with a plurality of fixing holes (21) for the fixing bolts (124) to penetrate.

3. The cantilever beam formwork according to claim 2, characterized in that: The cross section of the foundation beam (2) is an I-shape, and the cross section of the slide groove (121) is an inverted T-shape.

4. The cantilever beam formwork according to claim 2, characterized in that: A plurality of auxiliary grooves (122) are provided at intervals on the inner wall of the connection seat body (12), and rollers (123) are rotatably connected in the auxiliary grooves (122), and the rollers (123) abut against the foundation beam (2).

5. The cantilever beam formwork according to claim 1, characterized in that: The tension cable (4) is provided with a limiting bolt (42), and the base (1) is provided with a plurality of limiting screw holes (111). The limiting bolt (42) can be threadedly connected in any of the limiting screw holes (111).

6. The cantilever beam formwork according to claim 5, characterized in that: The tension cable (4) is provided with a limiting ring (41), and the limiting bolt (42) is rotatably connected to the limiting ring (41).

7. The cantilever beam formwork according to claim 1, characterized in that: The direction-changing assembly (5) comprises a link (51), a steering wheel (52) and a plate body (53); the plate body (53) is arranged on the top inner wall of a building structure (6) at the same level as the base (1); the steering wheel (52) is rotatably connected to the plate body (53); the link (51) is arranged between the steering wheel (52) and the connecting frame (22); and the tension cable (4) passes through the middle of the link (51) and abuts against the steering wheel (52).

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