Adjustable formwork for a reserved opening

Abstract

The utility model relates to a adjustable reserved hole mouth support template, including rice type center axle sleeve, each direction opening of center axle sleeve is fixed with multistage telescopic link respectively, the one end fixed with connecting shaft of multistage telescopic link away from center axle sleeve, the one end away from multistage telescopic link of connecting shaft is equipped with adjusting assembly, the adjusting assembly includes support seat, top plate and back ridge, the support seat is fixed on connecting shaft, the top plate is located support seat away from the one side of connecting shaft, the back ridge interval fixed in the one side of top plate close to support seat, and with support seat articulates, and the connecting piece that can adjust back ridge interval to drive top plate deformation is equipped between adjacent back ridge. The utility model structure is simple, adjusts nimble, and the adaptability is strong, and the dismounting is convenient, reduces the artificial cost, and can be repeatedly used, and effectively improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building construction formwork technology, specifically to an adjustable pre-reserved opening support formwork. Background Technology

[0002] In engineering construction, formwork is an indispensable construction tool. Currently, most commonly used formwork is of a traditional, pre-fabricated type, with fixed shapes and sizes, making it impossible to adjust to specific needs during actual use. This is especially true in shear wall structures with pre-reserved openings, where the shapes of these openings vary, often requiring the replacement of formwork with the appropriate type based on the specific form of the opening. This process is cumbersome and requires significant manpower and resources to prepare various specifications of formwork materials. Traditional formwork methods for pre-reserved openings have the following main problems: First, poor adaptability; for example, circular openings require wooden formwork assembly, while square openings require custom-made steel formwork, making them incompatible. Second, difficulty in adjustment; limited by the support system structure, it is difficult to adapt to opening sizes with different diameters or side lengths. Third, low construction efficiency; the assembly and disassembly process is complex, relying on manual positioning, making it difficult to guarantee accuracy.

[0003] Therefore, it is necessary to study an adjustable pre-reserved opening support formwork. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an adjustable pre-reserved opening support formwork, which effectively solves the problems of poor adaptability, difficulty in adjustment, low construction efficiency and poor flexibility of traditional pre-reserved opening formwork.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an adjustable pre-reserved opening support template, comprising a star-shaped central bushing, wherein multiple telescopic rods are fixed in each of the openings of the central bushing, and a connecting shaft is fixed at the end of the multiple telescopic rods away from the central bushing. An adjustment component is provided at the end of the connecting shaft away from the multiple telescopic rods. The adjustment component includes a support base, a top plate, and back ribs. The support base is fixed on the connecting shaft, the top plate is located on the side of the support base away from the connecting shaft, and the back ribs are fixed at intervals on the side of the top plate close to the support base and are hinged to the support base; and a connecting piece is provided between adjacent back ribs to adjust the spacing between the back ribs to drive the deformation of the top plate.

[0006] Furthermore, the connector includes a screw and an adjusting nut. The back rib is provided with a mounting hole, the screw passes through the mounting hole of the back rib, and the adjusting nut is threaded to the end of the screw. Tightening the adjusting nuts at both ends in opposite directions can adjust the deformation of the top plate.

[0007] Furthermore, the mounting hole is a vertical waist-shaped hole structure, and the screw is movably fitted inside the mounting hole.

[0008] Furthermore, the multi-stage telescopic rod includes multiple nested sleeves, with wing screws between adjacent sleeves for locking the position of adjacent sleeves.

[0009] Furthermore, the multi-stage telescopic rod includes multiple nested sleeves, which are threaded together and fixed by set screws.

[0010] The beneficial effects of the above technical solution are as follows: The adjustable pre-reserved opening support template provided by this utility model has a simple structure, flexible adjustment, convenient assembly and disassembly, reduces labor costs, effectively improves construction efficiency, and can be reused repeatedly, reducing costs and increasing efficiency; by using a cross-shaped central bushing with a selectable number of multi-stage telescopic rods, a radial skeleton structure that supports circular, square, polygonal, and even irregularly shaped openings can be flexibly formed, which is highly adaptable and has uniform force distribution, effectively avoiding stress concentration; moreover, the multi-stage telescopic rods provide a wide range of length adjustment, which is convenient to adapt to different opening sizes, and can be used with adjustment components to adjust the curvature of the top plate, ensuring that the top plate can achieve surface contact with the inner wall of the opening rather than point contact or line contact, which greatly improves the stability of the support and the quality of concrete forming. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the external structure of the present utility model; Figure 2 A schematic diagram of the implementation structure of the central bushing; Figure 3 A schematic diagram of the implementation structure of a multi-stage telescopic pole; Figure 4 A schematic diagram of the implementation structure for adjusting the components; Figure 5 This is a schematic diagram of one embodiment of the present utility model; Figure 6 This is a schematic diagram of another embodiment of the present invention; Figure 7 This is a schematic diagram of another embodiment of the present utility model.

[0012] Reference numerals: 1-Central bushing, 2-Multi-stage telescopic rod, 21-Sleeve, 22-Connecting shaft, 3-Adjusting assembly, 31-Top plate, 32-Back rib, 33-Screw, 34-Adjusting nut, 35-Support base, 36-Mounting hole, 4-Wing screw. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1: This example aims to provide an adjustable pre-reserved opening support formwork, which is mainly used to adapt to the formwork support of circular, square or other irregular pre-reserved openings in shear walls, and can quickly adjust the telescopic length according to the size and shape of the opening, greatly improving the formwork support efficiency.

[0014] In the specific implementation structure, such as Figure 1-4 As shown, the adjustable pre-reserved opening support template provided in this embodiment includes a central bushing 1 in a star shape. Multiple telescopic rods 2 are fixed in each of the openings of the central bushing. Further, each telescopic rod 2 includes multiple nested sleeves 21. In this embodiment, five nested sleeves 21 are included. When adjacent sleeves 21 are fitted together, after adjusting the telescopic length according to the size of the pre-reserved opening, perforations can be made in the sleeves 21, and the positions of adjacent sleeves 21 can be locked using wing screws 4. Figure 3 As shown in Figure (a). Furthermore, in practical applications, threads can be machined on the inner and outer surfaces of each sleeve 21, such as... Figure 3 As shown in Figure (b), the sections of the sleeve 21 are connected together by threads and then fixed by set screws, which facilitates real-time adjustment of the length of the multi-stage telescopic rod 2.

[0015] like Figure 4 As shown, a connecting shaft 22 is fixed to one end of the multi-stage telescopic rod 2 away from the central bushing 1. An adjusting component 3 is provided on the other end of the connecting shaft 22 away from the multi-stage telescopic rod 2. The adjusting component 3 includes a support base 35, a top plate 31, and a back rib 32. The support base 35 is fixed on the connecting shaft 22. The top plate 31 is located on the side of the support base 35 away from the connecting shaft 22. The back ribs 32 are fixed at intervals on the side of the top plate 31 near the support base 35 and are hinged to the support base 35. A through mounting hole 36 is provided between adjacent back ribs 32. The mounting hole 36 is a waist hole structure. A screw 33 is inserted into the mounting hole 36. Both ends of the screw 33 extend outside the mounting hole 36 and are threadedly connected to adjusting nuts 34.

[0016] Therefore, when the adjusting nuts 34 at both ends are turned in opposite directions, the back ribs 32 can move closer to or further away from each other, thereby adjusting the bending deformation of the top plate 31. By adjusting the curvature of the top plate 31, it can adapt to the inner wall structure of different reserved openings, ensuring that the support template can adaptably support the reserved opening.

[0017] The adjustable pre-reserved opening support template provided in this embodiment, in practical applications, can be adjusted according to the shape of the pre-reserved opening, such as... Figure 5-7As shown, for example, circular, square or polygonal structures, the number of multi-stage telescopic rods 2 and their orientation are adaptively selected to ensure that the number of telescopic rods matches the force balance direction of the opening shape, avoiding support deformation or failure caused by uneven local force. Then, the corresponding orientation and number of multi-stage telescopic rods 2 are fixed in the opening of the central bushing 1. Next, according to the shape of the reserved opening, the adjusting nuts 34 at both ends of the screw 33 are turned to drive the adjacent back ribs 32 to move towards or away from each other. When the back ribs 32 rotate around the hinge point of the support seat 35, they will push the top plate 31 to bend outward or inward until the curvature of the top plate 31 is completely in contact with the curvature of the inner wall of the opening. Then, based on the actual size of the opening to be supported, such as the diameter of a circular opening or the side length of a square opening, the total length that each multi-stage telescopic rod needs to extend is determined, so that the multi-stage telescopic rods in each direction of the star-shaped central bushing are locked to the target length, forming a radial support frame that matches the size of the opening, thus completing the support of the formwork.

[0018] The adjustable pre-reserved opening support template provided by this utility model has a simple structure, flexible adjustment, strong adaptability, and convenient assembly and disassembly. It reduces labor costs, effectively improves construction efficiency, and can be reused, thus reducing costs and increasing efficiency.

[0019] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An adjustable pre-reserved opening support template, characterized in that: The device includes a star-shaped central bushing (1), with multi-stage telescopic rods (2) fixed in each of the openings of the central bushing (1). A connecting shaft (22) is fixed at one end of the multi-stage telescopic rods (2) away from the central bushing (1). An adjustment component (3) is provided at one end of the connecting shaft (22) away from the multi-stage telescopic rods (2). The adjustment component (3) includes a support base (35), a top plate (31), and back ribs (32). The support base (35) is fixed on the connecting shaft (22). The top plate (31) is located on the side of the support base (35) away from the connecting shaft (22). The back ribs (32) are fixed at intervals on the side of the top plate (31) close to the support base (35) and are hinged to the support base (35). A connecting piece is provided between adjacent back ribs (32) to adjust the spacing of the back ribs (32) to drive the top plate (31) to deform.

2. The adjustable pre-reserved opening support template according to claim 1, characterized in that: The connector includes a screw (33) and an adjusting nut (34). The back rib (32) is provided with a mounting hole (36). The screw (33) passes through the mounting hole (36) of the back rib (32). The adjusting nut (34) is threaded to the end of the screw (33). Tightening the adjusting nuts (34) at both ends in opposite directions can adjust the deformation of the top plate (31).

3. The adjustable pre-reserved opening support template according to claim 2, characterized in that: The mounting hole (36) is a vertical waist hole structure, and the screw (33) is movably fitted inside the mounting hole.

4. The adjustable pre-reserved opening support template according to claim 1, characterized in that: The multi-stage telescopic rod (2) includes multiple nested sleeves (21), with wing screws (4) between adjacent sleeves for locking the position of adjacent sleeves.

5. The adjustable pre-reserved opening support template according to claim 1, characterized in that: The multi-stage telescopic rod (2) includes multiple nested sleeves (21), which are threaded together and fixed by set screws.

Images