An adjustable concrete formwork device

Abstract

The utility model provides a kind of adjustable concrete forming template device, it is related to concrete construction technical field, including U-shaped support plate, U-shaped support plate includes middle support plate and two sides can be bent along the connecting position of middle support plate side support plate;Closed support plate and U-shaped support plate are enclosed to form the supporting cylinder of back shape;Sealing plate is elastic folding plate, sealing plate is arranged between side support plate and closed support plate, and is connected with both;Adjusting part is connected with U-shaped support plate, adjusting part is used to drive two side support plates relative to the connecting position of middle support plate to each other close or away, and after adjusting, side support plate is fixed in preset position.The utility model can adapt to narrow space, and it is convenient to install and disassemble quickly in later period.

Description

Technical Field

[0001] This utility model relates to the field of concrete construction technology, and more specifically, to an adjustable concrete forming template device. Background Technology

[0002] In concrete construction, formwork is typically erected to define the space for concrete forming and ensure the accuracy of its dimensions and shape. Existing formwork structures are mostly suitable for open areas, secured by a formwork support system, and dismantled uniformly after concrete pouring and curing. However, with the increasing complexity of building structures, more and more projects involve narrow spaces such as elevator shafts, cable shafts, or ventilation shafts. These passages are usually characterized by small cross-sectional dimensions, high depth, and complex internal structures, posing significant challenges to the installation and securing of formwork.

[0003] Existing formwork support systems are often difficult to deploy in confined spaces, leading to cumbersome installation, insecure fixing, and compromised concrete pouring quality. Furthermore, after concrete has set, the formwork in these locations is difficult to remove due to space constraints, easily damaging the formwork or causing surface defects in the concrete, increasing rework probability and impacting construction efficiency. Therefore, there is an urgent need to develop a concrete formwork device that can adapt to confined spaces, is easy to install, and allows for rapid disassembly, to meet the needs of concrete construction in special locations and improve construction quality and efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable concrete forming template device that can adapt to narrow spaces and is easy to install and quickly disassemble later.

[0005] This utility model is achieved through the following technical solution:

[0006] An adjustable concrete forming formwork device, comprising:

[0007] The U-shaped support plate includes a central support plate and two side support plates that can be bent along the connection position with the central support plate.

[0008] A closed support plate, wherein the closed support plate and the U-shaped support plate are arranged to form a U-shaped support cylinder;

[0009] A sealing plate, wherein the sealing plate is an elastic folding plate, and the sealing plate is disposed between the side support plate and the closed support plate and connected to both of them;

[0010] An adjusting member is connected to the U-shaped support plate. The adjusting member is used to drive the connection positions of the two side support plates relative to the middle support plate to move closer or further away from each other, and to fix the side support plates in a preset position after adjustment.

[0011] Furthermore, both the closed support plate and the side support plate are provided with folded edges. When the closed support plate and the U-shaped support plate form a U-shaped support cylinder, the folded edges on the closed support plate and the side support plate overlap each other.

[0012] Furthermore, a flush plate is provided on the outer side of the side support plate. The flush plate is used to compensate for the thickness of the closed support plate so that the outer wall of the flush plate is flush with the outer wall of the folded edge of the closed support plate.

[0013] Furthermore, the sealing plate includes a support portion and a folding portion, the thickness of the support portion is greater than that of the folding portion, the folding portion is connected to the closed support plate, and the support portion is connected to the U-shaped support plate.

[0014] Furthermore, both the U-shaped support plate and the closed support plate are fixedly provided with inner supports, which are all made of vertical and horizontal bars welded together.

[0015] Furthermore, the adjusting component includes a screw and multiple sets of connecting rods. An inner support cylinder is fixedly installed on the inner bracket of the middle support plate. The screw is rotatably connected to the inner support cylinder along its length. Multiple sets of sliders are threaded onto the screw. Each set of sliders corresponds one-to-one with a set of connecting rods. A sleeve is fixedly installed on each slider. The sleeve is slidably fitted onto the inner support cylinder. The inner support cylinder has clearance grooves for the sliders to slide. Each set of connecting rods includes a pair of connecting rods. The pair of connecting rods are symmetrically hinged on both sides of the sleeve. Reinforcing rods are fixedly installed on the inner brackets of both side support plates. The ends of the pair of connecting rods away from the sleeve are respectively hinged to the reinforcing rods.

[0016] Furthermore, the connecting rod is made of L-shaped angle steel.

[0017] Furthermore, the inner support cylinder is fixed to the inner support of the middle support plate by multiple parallel rods, and diagonal bracing rods are also fixed between the rods and the inner support. Multiple sets of telescopic cylinders are provided between the inner support cylinder and the inner support of the closed support plate.

[0018] Furthermore, the two side support plates are provided with thickened portions at the folded edges, and the thickened portions abut against the inner support of the side support plates.

[0019] Furthermore, lifting rings are fixedly installed on the inner supports of the two side support plates.

[0020] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0021] 1. This utility model utilizes a U-shaped support cylinder formed by U-shaped and closed support plates, which can be directly assembled in narrow passages such as elevator shafts, cable shafts, or ventilation shafts. The structure is simple and compact, facilitating construction. Adjustable components drive the side support plates to move closer to or further apart relative to the central support plate. Before pouring, the side support plates are opened to form the desired formwork shape. After the concrete is poured, the side support plates can be moved inwards via the adjustable components, allowing for easy demolding in narrow spaces. This avoids the difficulty of demolding caused by the formwork being tightly attached to the concrete, significantly improving construction convenience and efficiency.

[0022] Furthermore, the sealing plate adopts an elastic folding structure and is set between the side support plate and the closed support plate. It can automatically unfold and fit tightly when the formwork is opened, achieving a reliable sealing effect. This effectively prevents grout leakage and seepage during concrete pouring, ensuring the dimensional accuracy and surface quality of the concrete. At the same time, the sealing plate can automatically fold inward with the side support plate when the formwork is demolded, avoiding jamming or residue. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of an adjustable concrete forming template device provided by this utility model;

[0024] Figure 2 This utility model Figure 1 Enlarged view of section A;

[0025] Figure 3 This utility model aims to demonstrate the internal structure of an adjustable concrete forming template device;

[0026] Figure 4 This utility model is intended to illustrate the structure of the adjusting component;

[0027] Figure 5 This utility model Figure 4 Enlarged view of section B;

[0028] Figure 6 This utility model is intended to show the structural diagram of the slider, sleeve, and screw;

[0029] Figure 7 This utility model aims to show a schematic diagram of the two side support plates being driven closer together by the adjusting component for demolding.

[0030] Reference numerals: 1-U-shaped support plate, 11-middle support plate, 12-side support plate, 121-flat plate, 122-thickened part, 2-closed support plate, 21-folded edge, 3-sealing plate, 31-support part, 32-folded part, 4-adjusting part, 41-screw, 411-rotating rod, 42-connecting rod, 43-inner support cylinder, 431-avoiding groove, 44-slider, 45-sleeve, 5-inner bracket, 51-vertical rod, 52-horizontal rod, 53-reinforcing rod, 54-rod body, 541-diagonal brace, 55-telescopic cylinder, 6-lifting ring. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] The following is for reference Figures 1-7 As shown in the figure, and further explained with reference to specific embodiments, this embodiment provides an adjustable concrete forming formwork device, including a U-shaped support plate 1. The U-shaped support plate 1 includes a central support plate 11 and side support plates 12 on both sides that can be bent along the connection position with the central support plate 11. With this structural design, the formwork can be placed into a narrow space at a small unfolding angle on the construction site, and then the side support plates 12 can be opened outward to a predetermined angle by the adjustment mechanism, thereby quickly forming a concrete support shape that meets the construction requirements.

[0034] After the closed support plate 2 and the U-shaped support plate 1 are set up, they can form a U-shaped support cylinder, thus forming a rapid support system for concrete molds. This enables efficient formwork erection in narrow spaces such as elevator shafts, cable shafts, or ventilation ducts, improving the convenience of concrete construction.

[0035] Furthermore, the sealing plate 3 is an elastic folding plate, installed between the side support plate 12 and the closed support plate 2, and reliably connected to both. After the side support plate 12 opens, the sealing plate 3 automatically unfolds to a certain extent with the structure, thus forming a continuous closed surface inside the formwork, effectively preventing grout leakage during concrete pouring and ensuring molding quality. When demolding is required after concrete molding, the sealing plate 3 can fold further as the side support plates 12 close, preventing the closed support plate 2 from accidentally falling off and avoiding excessive clamping between the formwork and the concrete surface, thereby reducing demolding resistance. The adjusting component 4 is connected to the U-shaped support plate 1, driving the connection positions of the side support plates 12 relative to the middle support plate 11 to move closer or further apart, and automatically fixing the side support plates 12 in a preset position after adjustment. In different embodiments, the adjusting component 4 can also use cylinders, electric cylinders, or other driving components to achieve automated operation, further improving construction efficiency.

[0036] In this device, both the closed support plate 2 and the side support plates 12 are provided with folded edges 21. These folded edges 21 are flat, bent structures that allow them to overlap and fit together after the closed support plate 2 and the side support plates 12 form a U-shaped support cylinder, enhancing the overall support rigidity and further improving the airtightness. In this embodiment, the connection between the middle support plate 11 and the two side support plates 12 is preferably a straight chamfer, which is easy to process and facilitates quick folding later. Of course, in other embodiments, a rounded corner transition structure can also be used to reduce stress concentration. Through this folded edge 21 structure design, a stable overlap can be formed between the closed support plate 2 and the side support plates 12 after the template is formed, preventing the template from expanding and deforming.

[0037] As an optional embodiment, a flush plate 121 is provided on the outer side of the side support plate 12. The flush plate 121 is used to compensate for the thickness of the closed support plate 2, ensuring that the outer wall of the template is neat and consistent. The flush plate 121 can be integrally formed with the side support plate 12, or it can be installed separately using a plate made of plastic or a metal plate coated with an anti-stick layer, to prevent concrete from adhering to the template surface after hardening, reducing the difficulty of later cleaning. This ensures that the outer wall of the side support plate 12 is flush with the outer wall of the folded edge 21 of the closed support plate 2, facilitating the uniform application of force and disassembly of the template.

[0038] Reference Figure 2 and Figure 7As shown, the sealing plate 3 specifically includes a support portion 31 and a folding portion 32. The support portion 31 is thicker than the folding portion 32, and is used to support the closed support plate 2 and prevent it from collapsing and deforming inward after the closed support plate 2 and the U-shaped support plate 1 are enclosed to form a U-shaped support cylinder. The folding portion 32 is connected to the closed support plate 2 and can fold along with the two side support plates 12 when demolding. At the same time, it pulls the closed support plate 2 slightly towards the middle support plate 11, thereby further reducing the friction between the closed support plate 2 and the concrete wall, facilitating smooth demolding. In addition, the sealing plate 3 also effectively prevents the closed support plate 2 from shifting or falling off during the demolding process, enhancing the overall stability of the formwork assembly.

[0039] To enhance the support strength of the U-shaped support plate 1 and the closed support plate 2, inner supports 5 are welded and installed on the inner side of the middle support plate 11, the side support plate 12, and the closed support plate 2. The inner supports 5 are formed by welding vertical rods 51 and horizontal rods 52 together to form a mesh reinforcement structure. This structure can disperse and transmit external forces when the formwork is under stress, effectively preventing the formwork from deforming or collapsing locally due to pouring pressure, and ensuring the geometric accuracy and surface flatness of the concrete forming.

[0040] like Figure 2 and Figure 3 As shown, the adjusting component 4 includes a screw 41 and multiple sets of connecting rods 42. An inner support cylinder 43 is fixedly installed on the inner bracket 5 of the middle support plate 11. The screw 41 is rotatably connected to the inner support cylinder 43 along its length, and a rotating rod 411 is fixedly welded to its end for manual rotation. Multiple sets of sliders 44 are threaded onto the screw 41. Each slider 44 is fixedly welded to a sleeve 45 and slidably fitted onto the inner support cylinder 43. The inner support cylinder 43 is provided with a clearance groove 431 to allow the slider 44 to move freely along its length.

[0041] Each set of connecting rods 42 includes a pair of L-shaped angle steel rods 42, symmetrically hinged to both sides of the sleeve 45. The distal ends are respectively hinged to the reinforcing rods 53 of the side support plates 12 on both sides. By rotating the screw 41, the slider 44 can be driven to move along its length, causing the connecting rods 42 to push or pull the side support plates 12, thereby enabling the template to expand or contract in a narrow space. Because the screw 41 has a self-locking characteristic, it can reliably maintain its current position after stopping rotation, preventing accidental movement of the side support plates 12 due to external forces during construction. In other embodiments, detachable support rods or support cylinders can also be used to further prevent the template from contracting due to external forces.

[0042] Furthermore, the inner support cylinder 43 is fixedly welded to the inner support 5 of the middle support plate 11 by multiple parallel rods 54. Simultaneously, diagonal bracing rods 541 are added between the rods 54 and the inner support 5 to form a triangular support structure, improving stress stability. Multiple sets of telescopic cylinders 55 are also installed between the inner support cylinder 43 and the inner support 5 of the closed support plate 2. These telescopic cylinders 55 play a guiding and buffering role during the opening or closing of the template, ensuring that the closed support plate 2 moves smoothly along the correct path, and further enhancing the overall stability of the closed support plate 2.

[0043] As another optional embodiment, in order to prevent fatigue cracking at the folded edge 21 of the side support plate 12 due to stress concentration, a thickened part 122 is integrally formed at the folded edge 21 of both side support plates 12. The thickened part 122 can directly abut against the inner support 5 of the side support plate 12, thereby enhancing the bending and shear strength of the folded edge 21 and improving the durability of the template during long-term repeated use.

[0044] Furthermore, to facilitate the overall hoisting of the formwork or its positioning and adjustment in narrow vertical shafts, lifting rings 6 are fixedly welded onto the inner supports 5 of the side support plates 12 on both sides. Construction personnel can directly hook the lifting rings 6 through hoisting equipment to quickly complete the vertical lifting and lowering of the formwork, significantly reducing the intensity of manual operation and improving installation efficiency.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable concrete formwork panel apparatus, characterised in that, include: U-shaped support plate (1), the U-shaped support plate (1) includes a middle support plate (11) and side support plates (12) on both sides that can be bent along the connection position with the middle support plate (11); Closed support plate (2), the closed support plate (2) and the U-shaped support plate (1) are arranged to form a U-shaped support cylinder; Sealing plate (3), the sealing plate (3) is an elastic folding plate, the sealing plate (3) is disposed between the side support plate (12) and the closed support plate (2), and is connected to both; Adjusting component (4) is connected to the U-shaped support plate (1). The adjusting component (4) is used to drive the two side support plates (12) to move closer or further away from each other relative to the middle support plate (11) and fix the side support plates (12) in a preset position after adjustment.

2. The adjustable concrete forming template device according to claim 1, characterized in that, Both the closed support plate (2) and the side support plate (12) are provided with folded edges (21). When the closed support plate (2) and the U-shaped support plate (1) form a U-shaped support cylinder, the folded edges (21) on the closed support plate (2) and the side support plate (12) overlap each other.

3. The adjustable concrete forming template device according to claim 2, characterized in that, A flush plate (121) is provided on the outer side of the side support plate (12). The flush plate (121) is used to compensate for the thickness of the closed support plate (2) so that the outer wall of the flush plate (121) is flush with the outer wall of the folded edge (21) of the closed support plate (2).

4. The adjustable concrete forming template device according to claim 1, characterized in that, The sealing plate (3) includes a support part (31) and a folding part (32). The thickness of the support part (31) is greater than that of the folding part (32). The folding part (32) is connected to the closed support plate (2), and the support part (31) is connected to the U-shaped support plate (1).

5. The adjustable concrete forming template device according to claim 1, characterized in that, Both the U-shaped support plate (1) and the closed support plate (2) are fixedly provided with inner brackets (5), and the inner brackets (5) are all welded together by vertical rods (51) and horizontal rods (52).

6. The adjustable concrete forming template device according to claim 5, characterized in that, The adjusting component (4) includes a screw (41) and multiple sets of connecting rods (42). An inner support cylinder (43) is fixedly installed on the inner bracket (5) of the middle support plate (11). The screw (41) is rotatably connected to the inner support cylinder (43) along the length direction of the inner support cylinder (43). Multiple sets of sliders (44) are threaded on the screw (41). The multiple sets of sliders (44) correspond one-to-one with the multiple sets of connecting rods (42). A sleeve (45) is fixedly installed on the slider (44). The sleeve (45) slides and sleeves. The inner support cylinder (43) is provided with a clearance groove (431) for the sliding of the slider (44). Each set of connecting rods (42) includes a pair of connecting rods (42). The pair of connecting rods (42) are symmetrically hinged on both sides of the sleeve (45). Reinforcing rods (53) are fixedly provided on the inner brackets (5) of the side support plates (12) on both sides. The ends of the pair of connecting rods (42) away from the sleeve (45) are respectively hinged on the reinforcing rods (53).

7. The adjustable concrete forming template device according to claim 6, characterized in that, The connecting rod (42) is made of L-shaped angle steel.

8. The adjustable concrete forming template device according to claim 6, characterized in that, The inner support cylinder (43) is fixed to the inner support (5) of the middle support plate (11) by multiple parallel rods (54). A diagonal brace (541) is also fixed between the rod (54) and the inner support (5). Multiple sets of telescopic cylinders (55) are provided between the inner support cylinder (43) and the inner support (5) of the closed support plate (2).

9. The adjustable concrete forming template device according to claim 2, characterized in that, The two side support plates (12) are provided with thickened parts (122) at the folded edge (21) position, and the thickened parts (122) abut against the inner bracket (5) of the side support plate (12).

10. The adjustable concrete forming template device according to claim 5, characterized in that, Lifting rings (6) are fixedly installed on the inner brackets (5) of the two side support plates (12).

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