Adjustable bottom mold for roof pouring of fabricated building

Abstract

The present application relates to the field of prefabricated buildings, and specifically to an adjustable bottom mold for roof pouring of prefabricated buildings. The bottom mold aims to improve the flexibility and accuracy of roof pouring, while reducing the manufacturing cost and construction period of the mold. The bottom mold includes a bottom frame, a first adjusting frame, a second adjusting frame, a first positioning ruler, a second positioning ruler, a first filling frame, a second filling frame, a first adjusting mechanism, and a second adjusting mechanism. Through sliding fit and modulus positioning, the bottom mold can be flexibly adjusted according to the size requirements of different roofs, achieving accurate adjustment. The bottom mold adopts modular design, and each component is easy to disassemble and assemble, facilitating transportation and storage. The present application also designs an adjustable support system and auxiliary tools, improving the adaptability and construction efficiency of the bottom mold. The bottom mold has the advantages of high flexibility in size adjustment, accurate positioning accuracy, simplified construction process, stable structure, and easy maintenance and reuse, suitable for the diversified, high-precision and efficient construction requirements of modern prefabricated buildings.

Description

Technical Field

[0001] This invention relates to the field of prefabricated buildings, specifically to an adjustable bottom mold for roof pouring in prefabricated buildings, which improves the flexibility and precision of roof pouring while reducing the manufacturing cost of the mold and the construction cycle. Background Technology

[0002] In the development of prefabricated buildings, roof casting has always been a key step. Traditional roof casting methods mostly use fixed sizes and structures, making it difficult to adapt to the casting needs of roofs of different specifications and sizes. This has brought many limitations to the diversified design and construction of prefabricated buildings.

[0003] Currently, there are some roof casting molds on the market, such as the roof casting mold described in the prior art patent document CN117245766A. These molds have a relatively simple structure, mainly consisting of a fixed frame and a base plate. While these roof molds can meet basic casting requirements to a certain extent, many problems have been exposed in practical applications.

[0004] Traditional roof molds have fixed dimensions, requiring custom-made molds for roofs of different sizes and shapes. This not only increases manufacturing costs but also extends construction time. For example, a large prefabricated building project may include multiple roof designs of different specifications. Making separate molds for each type would significantly increase project costs and time. Furthermore, during actual construction, design changes may necessitate adjustments to roof dimensions, rendering fixed-size molds unsuitable and requiring mold remanufacturing, thus wasting resources.

[0005] During roof pouring, the positioning accuracy of the roof formwork directly affects the quality of the roof. Currently, roof formwork positioning relies primarily on manual measurement and adjustment, which is not only inefficient but also prone to errors. For example, when determining the pouring area of ​​the roof formwork, the lack of precise positioning devices can lead to dimensional deviations in the roof, affecting its overall structure and performance. Especially in prefabricated buildings with high precision requirements, such positioning errors can cause serious quality problems and even compromise the safety of the entire building.

[0006] In summary, existing roof molds for prefabricated building roof casting have many problems and cannot meet the diverse, high-precision, and high-efficiency construction requirements of modern prefabricated buildings. Therefore, developing an adjustable roof mold with flexible size adjustment and high-precision positioning is of significant practical importance. Summary of the Invention

[0007] The purpose of this invention is to provide an adjustable bottom mold for roof pouring in prefabricated buildings. This bottom mold can be flexibly adjusted according to the size requirements of different roofs, thereby improving the accuracy and quality of roof pouring, while reducing the manufacturing cost of the mold and the construction cycle.

[0008] To achieve the above objectives, this application adopts the following technical solution:

[0009] An adjustable base formwork for roof casting in prefabricated buildings includes: a base frame placed on a working platform, serving as the supporting foundation for the entire base formwork; a pair of first adjusting frames, spaced apart in a first direction, defining the casting range of the roof, with the spacing between the pair of first adjusting frames determined by a first positioning ruler. The first positioning ruler is configured to achieve modular positioning between the pair of first adjusting frames for precise spacing adjustment; and two pairs of second adjusting frames, spaced apart in a second direction, defining the casting range of the roof in a second direction, with the spacing between the pair of second adjusting frames determined by a second positioning ruler. The second positioning ruler is also configured to achieve modular positioning between the pair of second adjusting frames; a first guide rail extending in the first direction is coupled to the base frame, and the first adjusting frames slide against the first guide rail to adjust the spacing between the pair of first adjusting frames. This sliding engagement makes the adjustment process smoother and more accurate; a second guide rail extending in the second direction is coupled to the second adjusting frame, and the second adjusting frame slides against the second guide rail to adjust the spacing between the pair of second adjusting frames. Similarly, this sliding engagement improves the flexibility and accuracy of adjustment.

[0010] Furthermore, the first and second directions are perpendicular to each other to define and adjust the pouring range of the roof in both perpendicular directions. The top height of the first filling frame is approximately the same as that of the second adjusting frame, and the top height of the second filling frame is approximately the same as that of the second adjusting frame.

[0011] Preferably, a first filler frame is installed between a pair of first adjusting frames, and the length of the first filler frame in the first direction is set to a module m. In this way, the spacing between the first adjusting frames can be easily adjusted by increasing or decreasing the number of first filler frames.

[0012] Similarly, a second filling frame is installed between a pair of second adjusting frames, and the length of the second filling frame in the second direction is set to a module n. The modules n and m can be equal or unequal to meet the needs of different roof sizes.

[0013] The first positioning ruler has multiple positioning holes, with the distance between adjacent positioning holes being a module m. A connector passes through the positioning holes and is partially embedded in the first or second adjusting frame to determine the distance between a pair of first adjusting frames. This positioning method is simple and reliable, improving positioning accuracy and efficiency.

[0014] Similarly, the second positioning ruler also has multiple positioning holes, with the spacing between adjacent positioning holes being a module n. A connector passes through the positioning holes and is partially embedded into the second adjusting bracket to determine the spacing between a pair of second adjusting brackets.

[0015] To further improve the flexibility and accuracy of adjustment, a first adjustment mechanism is connected between the base frame and the first adjustment frame. The first adjustment mechanism includes a first screw operable by the user and a first nut that engages with the first screw. The first screw and the first nut are optionally mounted on either the base frame or the first adjustment frame for pitch adjustment.

[0016] Similarly, a second adjustment mechanism is connected between the first and second adjustment frames. The second adjustment mechanism includes a second screw operable by the user and a second nut cooperating with the second screw. The second screw and the second nut are optionally disposed on either the first or the second adjustment frame to adjust and fix the position of the second adjustment frame.

[0017] Finally, the first adjusting frame, the second adjusting frame, the first filling frame, and the second filling frame are all covered with base plates to form a complete casting mold surface. In this way, during the pouring process, the concrete can be evenly distributed on the base mold, ensuring the quality of the roof pouring.

[0018] The beneficial effects of this invention are:

[0019] 1. The adjustable bottom mold of the present invention, through the design of a first adjustment frame, a second adjustment frame, and a corresponding filling frame, can be flexibly adjusted according to the size requirements of different roofs. This modular and adjustable design greatly enhances the adaptability of the bottom mold, enabling the same set of bottom molds to be applied to the casting of roofs of various specifications, thereby reducing the manufacturing cost and storage requirements of the mold.

[0020] 2. Through the modular positioning method of the first and second positioning rulers, and the fixing effect of the connecting parts, the bottom mold of the present invention can achieve precise adjustment of the distance between the first and second adjusting frames. This precise positioning method effectively avoids human error that may occur during the positioning process of traditional roof molds, and improves the accuracy and quality of roof pouring.

[0021] 3. The adjustable bottom formwork of this invention adopts a sliding fit and adjustment mechanism design, making the adjustment process smoother and more accurate. Construction personnel can quickly adjust the bottom formwork according to the roof size requirements without the need for complex measurement and customization work, thereby simplifying the construction process and shortening the construction cycle.

[0022] 4. The base frame, first adjusting frame, second adjusting frame, and filling frame are tightly connected by connecting structures and adjusting mechanisms, forming a stable overall structure. This structural design not only improves the load-bearing capacity of the base formwork but also ensures the safety and stability during the roof pouring process.

[0023] 5. The adjustable bottom mold of this invention adopts a modular design, making it easy to disassemble and assemble the various components. During use, if any component is damaged or needs replacement, it can be easily replaced and repaired. Furthermore, the durability and reusability of the bottom mold ensure that it maintains high economic efficiency over long-term use.

[0024] In summary, the adjustable bottom mold for roof pouring in prefabricated buildings of the present invention has advantages such as high flexibility in size adjustment, accurate positioning, simplified construction process, stable structure, and ease of maintenance and reuse. The application of this bottom mold will greatly improve the efficiency and quality of roof pouring, while reducing construction cycle and cost, meeting the diverse, high-precision, and high-efficiency construction needs of modern prefabricated buildings, and has broad market application prospects and practical value. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the bottom mold from one perspective in Embodiment 1;

[0026] Figure 2 This is a structural schematic diagram of the bottom mold from another perspective in Embodiment 1;

[0027] Figure 3 This is an exploded view of the bottom mold in Example 1;

[0028] Figure 4 This is another exploded view of the bottom mold in Example 1;

[0029] Figure 5 This is another exploded view of the bottom mold in Example 1;

[0030] Figure 6 This is a schematic diagram of the structure after the second adjustment frame is removed from the bottom mold row in Embodiment 1;

[0031] Figure 7 This is a schematic diagram of the assembly of the first and second adjustment frames in Embodiment 1.

[0032] Explanation of the reference numerals in the figure:

[0033] 100. Base frame; 101. First guide rail; 102. First slider; 200. First adjusting frame; 201. Second guide rail; 202. Second slider; 300. Second adjusting frame; 400. First positioning ruler; 500. Second positioning ruler; 600. First filling frame; 700. Second filling frame; 800. First adjusting mechanism; 900. Second adjusting mechanism. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0035] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] Example 1:

[0037] like Figures 1 to 7 As shown, this embodiment provides an adjustable bottom mold for roof casting in prefabricated buildings. This bottom mold is ingeniously designed and structurally robust, aiming to improve the flexibility and precision of roof casting while reducing mold manufacturing costs and construction time. The structure and function of each component of the invention will be described in detail below with reference to the accompanying drawings.

[0038] The base frame 100 serves as the supporting foundation for the entire adjustable formwork, with a stable structural design capable of withstanding the enormous weight during roof pouring. The base frame 100 is constructed of high-strength steel or aluminum alloy, possessing sufficient rigidity and strength to ensure no deformation or damage occurs during pouring. Multiple support feet are provided at the bottom of the base frame 100 to stably place the entire formwork on the working platform (not shown). Figure 4As shown, a first guide rail 101 extending in a first direction is attached to the base frame 100. The first guide rail 101 is a machined linear guide rail, which has high guiding accuracy and wear resistance. The first guide rail 101 is slidably engaged with a first slider 102, which is fixedly connected to the first adjusting frame 200, allowing the first adjusting frame 200 to slide smoothly along the first guide rail 101, thereby facilitating the adjustment of the distance between a pair of first adjusting frames 200. Limiting blocks or stops (not shown) are also provided on both sides of the first guide rail 101 to prevent the first adjusting frame 200 from exceeding a predetermined range during sliding.

[0039] A pair of first adjusting frames 200 are spaced apart in a first direction, serving as a defining structure for the pouring range of the roof in that direction. The first adjusting frames 200 are made of the same material as the base frame 100, possessing sufficient rigidity and strength. The bottom of each first adjusting frame 200 has a sliding structure that engages with a first guide rail 101, such as... Figure 4 The first slider 102 shown allows the first adjusting frame 200 to slide stably along the first guide rail 101. The first positioning ruler 400 and the first adjusting frame 200 are connected by a positioning structure, which can be a combination of bolts, positioning pins, and positioning holes. The positioning pins are inserted into the positioning holes, and bolts are used to lock them together securely. Through the precise positioning of the first positioning ruler 400, the spacing between the pair of first adjusting frames 200 can be easily adjusted to meet different dimensional requirements for roof pouring.

[0040] The first positioning ruler 400 serves as the positioning reference for the distance between the pair of first adjusting frames 200, and its structural design is precise and reliable. The first positioning ruler 400 is made of high-strength steel, stainless steel, or aluminum alloy, possessing extremely high dimensional accuracy and corrosion resistance. The first positioning ruler 400 has multiple positioning holes, with the distance between adjacent positioning holes being a module m, which can be set according to the dimensional requirements of the roof pouring. In use, a connector (such as a bolt or pin) passes through the positioning hole and partially embeds into the positioning structure within the first adjusting frame 200, thereby firmly and accurately fixing the pair of first adjusting frames 200 at the predetermined distance. This positioning method is simple and reliable, improving positioning accuracy and efficiency, while also facilitating operation by construction personnel. In this embodiment, both sides of the first positioning ruler 400 can be fixed to the pair of first adjusting frames 200 respectively to form a stable positioning reference. Of course, in other embodiments, the first positioning ruler 400 can also be fixed in other ways, such as connecting both sides of the first positioning ruler 400 to two opposing second adjusting frames 300 respectively, to meet the needs of different construction scenarios.

[0041] A first filling frame 600 is installed between a pair of first adjusting frames 200. The first filling frame 600 serves as an intermediate support structure during roof pouring. Its length in the first direction (also defined as the longitudinal direction) is set to a module m, corresponding to the module m on the first positioning ruler 400. The module m includes the width of the first filling frame 600. The dimensions of the first filling frame 600 in the second direction (also defined as the width direction) are the same as the base frame 100. By increasing or decreasing the number of first filling frames 600, the spacing between the first adjusting frames 200 can be easily adjusted to meet different dimensional requirements of roof pouring. The top height of the first filling frame 600 is the same as that of the second adjusting frame 300, lying on the same plane to ensure that the concrete is evenly distributed on the base formwork during roof pouring. The first filling frame 600 is made of the same material as the first adjusting frame 200, possessing sufficient rigidity and strength. The first filling frame 600 is also equipped with a filling structure that cooperates with the first positioning ruler 400. The filling structure includes bolts, positioning pins, and positioning holes. The positioning pins are inserted into the positioning holes, and the bolts are used to lock the first positioning ruler 400 and the first filling frame 600 together, ensuring that the first filling frame 600 is securely and precisely filled between a pair of first adjusting frames 200. The design of the first filling frame 600 allows for a wider adjustment range of the bottom formwork, while also improving its versatility and flexibility. During construction, the number of first filling frames 600 can be easily increased or decreased according to the specific dimensional requirements of the roof pouring, thereby adjusting the overall dimensions of the bottom formwork.

[0042] like Figure 3 and Figure 7As shown, two pairs of second adjustment frames 300 are arranged at intervals in the second direction, serving as defining structures for the pouring range of the roof in that direction. The structure of the second adjustment frame 300 is similar to that of the first adjustment frame 200, also made of high-strength steel or aluminum alloy, providing sufficient rigidity and strength. The bottom of each second adjustment frame 300 is provided with a second guide rail 201 extending in the second direction. The second guide rail 201 is identical to the first guide rail 101, also being a precision-machined linear guide rail. The second guide rail 201 guides the sliding connection between the second adjustment frame 300 and the first adjustment frame 200, allowing adjustment of the spacing between a pair of second adjustment frames 300. In other embodiments, the second guide rail 201 can also be configured between the second adjustment frame 300 and other support frames, which can be fixedly or movably connected to the base frame. Through the sliding connection of the second guide rail 201, the position of the second adjustment frame 300 can be easily adjusted to meet the dimensional requirements of roof pouring in different directions. The second adjustment frame 300 is also provided with a positioning structure for connection with a second positioning ruler 500. The design of this positioning structure is the same as that of the first adjustment frame 200. It adopts a positioning structure consisting of bolts, positioning pins and positioning holes. The positioning pins are inserted into the positioning holes and locked with bolts so as to be firmly and precisely connected to the second positioning ruler 500 and the second adjustment frame 300 in terms of size limitation.

[0043] like Figure 3 and Figure 7 As shown, the second positioning ruler 500 serves as the positioning reference for the distance between the pair of second adjustment frames 300, and its structure is similar to that of the first positioning ruler 400. The second positioning ruler 500 is also made of high-strength steel, stainless steel, or aluminum alloy, possessing extremely high dimensional accuracy and corrosion resistance. The second positioning ruler 500 has multiple bolt holes and positioning holes or pins. The distance between adjacent bolt holes and positioning holes or pins is a module n, which can be set according to the dimensional requirements of the roof pouring and may be equal to or different from the module m on the first positioning ruler 400. In use, the positioning holes or pins on the second positioning ruler 500 are partially embedded into the positioning pins or holes on the second adjustment frames 300, thereby firmly fixing the pair of second adjustment frames 300 at the predetermined distance. Through the precise positioning of the second positioning ruler 500, the distance between the pair of second adjustment frames 300 can be easily adjusted to meet the dimensional requirements of the roof pouring in different directions.

[0044] The bolt holes on both sides of the positioning holes or positioning pins on the second positioning ruler 500 are connected and fixed with the corresponding connecting threads of the second adjusting frame 300 to improve the connection strength.

[0045] A second filling frame 700 is installed between a pair of second adjusting frames 300. The second filling frame 700 serves as a support structure in the second direction during roof pouring. Its length is set to a module n, corresponding to the module n on the second positioning ruler 500. Module n includes the width of the second filling frame 700. The length of the second filling frame 700 is the same as that of the second adjusting frame 300. By increasing or decreasing the number of second filling frames 700, the spacing between the second adjusting frames 300 can be easily adjusted to meet the dimensional requirements of roof pouring in different directions. The top height of the second filling frame 700 is the same as that of the second adjusting frame 300, and they are on the same plane to ensure that the concrete is evenly distributed on the bottom formwork during roof pouring. The second filling frame 700 is made of the same material as the second adjusting frame 300, possessing sufficient rigidity and strength. The second filling frame 700 is also provided with a filling structure that cooperates with the second positioning ruler 500. The filling structure includes bolts, positioning pins and positioning holes. The positioning pins are inserted into the positioning holes and bolts are used to lock the second positioning ruler 500 and the second filling frame 700, so that the second filling frame 700 can be stably filled between a pair of second adjusting frames 300.

[0046] To further improve the flexibility and accuracy of bottom mold adjustment, a first adjustment mechanism 800 is connected between the base frame 100 and the first adjustment frame 200. The first adjustment mechanism 800 includes a first screw operable by a user and a first nut cooperating with the first screw. The first screw and the first nut are selectively disposed on either the base frame 100 or the first adjustment frame 200. Rotating the first screw allows for convenient adjustment of the position of the first adjustment frame 200, thereby adjusting the spacing between the pair of first adjustment frames 200. In this embodiment, the first screw is rotatably disposed on the base frame 100, and the first nut is fixed to the first adjustment frame 200.

[0047] Similarly, a second adjustment mechanism 900 is connected between the first adjustment frame 200 and the second adjustment frame 300. The second adjustment mechanism 900 includes a second screw operable by a user and a second nut cooperating with the second screw. The second screw and the second nut are selectively mounted on either the first or second adjustment frame. Rotating the second screw allows for convenient adjustment of the position of the second adjustment frame 300, thereby adjusting the spacing between the pair of second adjustment frames 300. In this embodiment, the second screw is rotatably mounted on the first adjustment frame 200, and the second nut is fixed to the second adjustment frame 300. The design of the adjustment mechanism makes the adjustment of the bottom formwork more convenient and quick, while improving the accuracy and stability of the adjustment. During construction, the overall size and shape of the bottom formwork can be easily adjusted using the adjustment mechanism according to the specific dimensional requirements of the roof pouring.

[0048] The first adjusting frame 200, the second adjusting frame 300, the first filling frame 600, and the second filling frame 700 are all covered with a base plate (not individually marked in the figure) to form a complete casting formwork surface. The base plate is made of steel, stainless steel, aluminum, or other suitable materials, with a smooth and flat surface to ensure even distribution of concrete on the formwork. The thickness and strength of the base plate are designed according to actual construction requirements, ensuring sufficient rigidity to withstand the pressure of concrete pouring while also considering lightweight for easy handling and assembly. The connection between the base plate and the adjusting and filling frames can be welding, bolting, or using a detachable snap-fit ​​structure. This design facilitates the replacement and maintenance of the base plate and allows for reuse across different projects, reducing operating costs.

[0049] Furthermore, to improve the adaptability and flexibility of the bottom formwork system, this invention also incorporates an adjustable support system. This system includes multiple height adjustment devices (not specifically illustrated) located below the base frame 100. These devices can be screw jacks, hydraulic lifting columns, or telescopic rods with locking functions, allowing users to fine-tune the overall height of the bottom formwork according to the ground conditions at the construction site or specific pouring height requirements. This design not only enhances the versatility of the bottom formwork but also enables it to handle uneven ground or situations requiring specific pouring thicknesses more flexibly.

[0050] To further enhance the stability of the bottom formwork, especially during the pouring of roofs for large or complex structures, this invention can also add diagonal braces or cross bracing rods (not shown in the figure) around the base frame 100 or at key locations. These support structures can effectively resist lateral forces, preventing the bottom formwork from tilting or deforming due to the lateral pressure of concrete during pouring, thus ensuring the safety and quality of the pouring operation.

[0051] To improve the stability of the base frame 100, the foundation is compacted before the base frame is installed to ensure consistent bearing capacity. Then the base frame 100 is installed. After the base frame 100 is installed, concrete or reinforced concrete is poured under the base frame 100 to improve the overall stability and structural strength of the base frame 100.

[0052] To facilitate practical construction, all connecting components, such as locating pins, bolts, nuts, and clips, are treated with anti-corrosion measures to extend their service life. Standard parts are also selected for easy on-site assembly and disassembly, reducing construction preparation time. Furthermore, for ease of transportation and storage, the entire bottom formwork system is designed with a modular structure, allowing each component to be packaged independently, reducing volume and improving logistics efficiency.

[0053] Finally, in order to improve the efficiency and safety of the construction site, this invention also suggests equipping the site with corresponding auxiliary tools, such as dedicated wrenches, screwdrivers, and power tools (such as electric wrenches) for adjusting height and tightening connections, to reduce the physical burden on workers and speed up the installation and adjustment process.

[0054] In summary, the adjustable bottom mold for roof casting of prefabricated buildings provided by this invention, through its ingenious design, stable structure, and high degree of adjustability and flexibility, not only significantly improves the accuracy and efficiency of roof casting, but also effectively reduces the manufacturing cost of molds and the construction cycle, providing a highly efficient, economical and practical solution for the modern construction industry.

[0055] Example 2:

[0056] In this embodiment, we will refer to Figures 1-7 This document describes in detail the practical application of the adjustable bottom formwork in the prefabricated building roof casting process of Example 1, demonstrating its efficiency, flexibility, and precision. The specific usage steps and operating procedures are as follows:

[0057] 1. Initial Installation Preparation

[0058] Before construction begins, the installation personnel need to survey the installation site and prepare the corresponding adjustable bottom formwork components according to the design requirements, including the base frame 100, the first adjustment frame 200, the second adjustment frame 300, the first filling frame 600, the second filling frame 700, the first positioning ruler 400, the second positioning ruler 500, the first adjustment mechanism 800, and the second adjustment mechanism 900, etc.

[0059] 2. Base frame installation

[0060] Place the base frame 100 on the work platform, ensuring that the support feet of the base frame 100 are stably in contact with the ground. Use a level to check the levelness of the base frame 100, and if necessary, make fine adjustments to the height of the base frame 100 using a height adjustment device (such as a screw jack) to ensure the levelness and stability of the entire base formwork system.

[0061] To improve the stability of the base frame 100, the foundation is compacted before the base frame is installed to ensure consistent bearing capacity. Then the base frame 100 is installed. After the base frame 100 is installed, concrete or reinforced concrete is poured under the base frame 100 to improve the overall stability and structural strength of the base frame 100.

[0062] 3. Installation and adjustment of the first adjustment frame

[0063] The first adjusting frame 200 is slidably engaged with the first guide rail 101 on the base frame 100 via the first slider 102, ensuring smooth and unobstructed sliding. According to the dimensional requirements of the roof in the first direction, a first positioning ruler 400 is used for positioning. The first positioning ruler 400 is fixed between a pair of first adjusting frames 200 (or temporarily supported by other structures such as a second adjusting frame), using a connector (such as a positioning pin) passing through the positioning hole, and then tightened with bolts, thereby fixing the first positioning ruler 400 to the first adjusting frame 200 to precisely set the spacing between the pair of first adjusting frames 200.

[0064] If the spacing needs to be adjusted to accommodate different roof sizes, this can be achieved by increasing or decreasing the number of the first filling frames 600. The first filling frames 600 are filled between a pair of first adjusting frames 200, ensuring that they fit securely with the filling structure of the first positioning ruler 400.

[0065] 4. Installation and adjustment of the second adjustment frame

[0066] After the first adjusting bracket 200 is installed, the second adjusting bracket 300 is installed and adjusted. Figure 5 As shown, the second adjustment bracket 300 is slidably engaged with the second guide rail 201 via the second slider 202 to ensure smooth sliding. The second positioning ruler 500 is used for positioning according to the roof's dimensional requirements in the second direction.

[0067] The second positioning ruler 500 is fixed between a pair of second adjusting frames 300. A connector (such as a positioning pin) is passed through the positioning hole, and then bolts are used to lock the second positioning ruler 500 onto the second adjusting frame 300, thereby accurately setting the spacing between the pair of second adjusting frames 300. If the spacing needs to be adjusted, it can be achieved by increasing or decreasing the number of second filling frames 700.

[0068] 5. Fine adjustment and fixation

[0069] After initially setting the distance between the first adjusting bracket 200 and the second adjusting bracket 300, fine adjustments are made using the first adjusting mechanism 800 and the second adjusting mechanism 900. The first screw is rotated to adjust the position of the first adjusting bracket 200, and the second screw is rotated to adjust the position of the second adjusting bracket 300, until the precise dimensions required by the design are achieved.

[0070] Precise positioning uses the positioning pin of the positioning rod combined with the bolts on both sides to solve the two problems of positioning and fixing.

[0071] After adjustment, tighten the first nut and the second nut to ensure that the positions of the first adjustment bracket 200 and the second adjustment bracket 300 are fixed.

[0072] 6. Base plate installation

[0073] A base plate is placed over the second adjusting frame 300, the first filling frame 600, and the second filling frame 700 to form a complete casting mold surface. The base plate is fixedly connected to the adjusting frame and the filling frame by welding, bolting, or snap-fit ​​structure to ensure a firm connection and a flat surface.

[0074] 7. Roof pouring

[0075] After the base slab is installed, the roof concrete is poured. The concrete is poured evenly onto the base formwork and compacted using a vibrator to ensure it is dense and free of air bubbles. During the pouring process, the construction personnel must constantly check the stability of the base formwork and the quality of the concrete pouring.

[0076] 8. Curing and Demolding

[0077] After the concrete is poured, it is cured according to the design requirements. Once the concrete reaches the design strength, the formwork is removed and the installation is completed.

[0078] 9. Bottom mold maintenance and storage

[0079] For projects requiring demolding, clean and maintain all components of the bottom mold, inspect for any damaged or worn parts, and replace or repair them if necessary. Modularly package all components of the bottom mold for easy transport and storage, preparing them for the next project.

[0080] Through the above steps, the application of adjustable bottom formwork in the roof pouring process of prefabricated buildings was successfully implemented. This bottom formwork boasts high flexibility and precision, enabling rapid adjustment and positioning according to different roof size requirements, significantly improving the efficiency and quality of roof pouring. Simultaneously, its modular design and ease of disassembly and assembly reduce manufacturing costs and construction time, providing an efficient, economical, and practical solution for modern prefabricated buildings.

[0081] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An adjustable bottom formwork for roof casting in prefabricated buildings, characterized in that, include: The base frame placed on the work platform; A pair of first adjustment frames that define the pouring range of the roof in a first direction, the pair of first adjustment frames being spaced apart in the first direction, and the spacing between the pair of first adjustment frames being determined by a first positioning ruler, the first positioning ruler being configured to achieve modular positioning between the pair of first adjustment frames; as well as Two pairs of second adjustment frames define the pouring range of the roof in the second direction. A pair of second adjustment frames are arranged at intervals in the second direction, and the spacing between the pair of second adjustment frames is determined by a second positioning ruler, which is configured to achieve modular positioning between the pair of second adjustment frames. The base frame is coupled with a first guide rail extending in the first direction, and the first adjusting frame is slidably engaged with the first guide rail to adjust the distance between a pair of first adjusting frames. The first adjusting frame is coupled with a second guide rail extending in the second direction, and the second adjusting frame is slidably engaged with the second guide rail to adjust the distance between a pair of second adjusting frames.

2. The adjustable bottom formwork for roof casting according to claim 1, characterized in that, The first direction and the second direction are perpendicular to each other.

3. The adjustable bottom formwork for roof casting according to claim 1 or 2, characterized in that, A first filling frame is installed between the pair of first adjusting frames, and the length of the first filling frame in the first direction is set to a module m.

4. The adjustable bottom formwork for roof casting according to claim 3, characterized in that, The first positioning ruler has multiple positioning holes, and the distance between adjacent positioning holes is a module m. A connector passes through the positioning holes and is partially embedded into the first adjustment frame or the second adjustment frame to determine the distance between the pair of first adjustment frames.

5. The adjustable bottom formwork for roof casting according to claim 4, characterized in that, The connector passes through the positioning hole and is partially embedded into the second adjustment frame, so that the two sides of the first positioning ruler are respectively fixed to the two oppositely arranged second adjustment frames, and the distance between the pair of first adjustment frames is determined by the connection structure between the second adjustment frame and the first adjustment frame.

6. The adjustable bottom formwork for roof casting according to claim 3, characterized in that, A second filling frame is installed between the pair of second adjusting frames, and the length of the second filling frame in the second direction is set to a module n, wherein the module n and m are equal or unequal.

7. The adjustable bottom formwork for roof casting according to claim 6, characterized in that, The second positioning ruler has multiple positioning holes, and the distance between adjacent positioning holes is a module n. A connector passes through the positioning holes and is partially embedded in the second adjustment frame to determine the distance between the pair of second adjustment frames.

8. The adjustable bottom formwork for roof casting according to claim 6, characterized in that, The top height of the first filling frame is approximately the same as that of the second adjusting frame, and the top height of the second filling frame is approximately the same as that of the second adjusting frame.

9. The adjustable bottom formwork for roof casting according to claim 1, characterized in that, A first adjustment mechanism is connected between the base frame and the first adjustment frame. The first adjustment mechanism includes a first screw that can be operated by the user and a first nut that cooperates with the first screw. The first screw and the first nut are selectively disposed on the base frame or the first adjustment frame.

10. The adjustable bottom formwork for roof casting according to claim 1 or 9, characterized in that, A second adjustment mechanism is connected between the first adjustment frame and the second adjustment frame. The second adjustment mechanism includes a second screw that can be operated by the user and a second nut that cooperates with the second screw. The second screw and the second nut are selectively disposed on the first adjustment frame or the second adjustment frame.

11. The adjustable bottom formwork for roof casting according to claim 1, characterized in that, The first adjustment frame, the second adjustment frame, the first filling frame, and the second filling frame are all covered with a base plate.

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