A detachable inner mold for a tower rounding die and a method of using the same

Abstract

The present application relates to the technical field of wind power tower construction, and particularly relates to a mixed tower whole circle mold with detachable inner mold and a use method thereof, the mold comprises a base assembly, a bottom mold assembly, an outer mold assembly, an inner mold assembly, a center column, an inner mold inclined strut and a pulling and locking tool system.In the scheme, by setting a small inner mold module which can be independently detached in the inner mold assembly, and matching the inner mold inclined strut mechanism which can be radially adjusted and contracted, the partial inner mold can be removed first to create operation space when demolding, and then the remaining inner mold body is contracted as a whole and easily removed, thereby efficiently and completely solving the demolding difficulty problem of large whole circle components, significantly reducing the damage risk of concrete components in the demolding process, and improving the mold turnover speed and operation safety.

Description

Technical Field

[0001] This invention relates to the field of wind turbine tower construction technology, and in particular to a detachable inner mold for a mixed-tower circular mold and its usage method. Background Technology

[0002] With the rapid development of the wind power industry, concrete wind turbine towers have been widely used in large-scale wind power projects due to their advantages such as high stability, good durability, and relatively low material costs. Concrete towers typically employ a segmented prefabrication and on-site assembly process. The core production step is the high-precision prefabrication of tower segments in the factory using large, circular molds. Existing concrete tower prefabrication molds mainly use a combination of outer and inner molds to form an annular cavity for casting. The design and application of these molds directly affect the quality, production efficiency, and cost of the prefabricated components.

[0003] However, in existing technologies, especially for large-diameter circular concrete tower molds, the inner mold is often designed as a monolithic or indivisible rigid structure. This traditional inner mold presents significant difficulties during demolding after concrete pouring and curing. Because the internal space of the concrete component is enclosed, the monolithic inner mold cannot be directly removed from the limited openings, often requiring complex and forceful dragging with large hoisting equipment. This easily leads to impact damage to the inner wall or edges of the concrete component, affecting the quality of the finished product. Furthermore, demolding is time-consuming and labor-intensive, resulting in low formwork turnover efficiency and certain safety risks. Therefore, there is an urgent need for a new type of circular concrete tower mold and its corresponding application method that can achieve efficient and non-destructive demolding. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a detachable inner mold for mixing towers and its usage method, thereby solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A detachable inner mold for mixing towers, comprising:

[0007] Base assembly;

[0008] The bottom mold assembly is fixed on the base assembly;

[0009] The outer mold assembly, surrounding the circumferential edge of the bottom mold assembly, includes a multi-lobed template unit capable of radial movement;

[0010] An inner mold assembly is disposed within the space enclosed by the bottom mold assembly and the outer mold assembly. The inner mold assembly includes an inner mold main frame that can be radially adjusted in size and at least two small inner mold modules that can be independently detached from the inner mold main frame.

[0011] The central pillar is vertically positioned at the geometric center of the mold;

[0012] The inner mold diagonal brace connects the central column and the inner mold main frame;

[0013] A pull and locking tooling system is connected between the outer mold assembly, the inner mold assembly, and the bottom mold assembly.

[0014] In one possible implementation, the mixing tower round mold further includes:

[0015] An outer platform assembly is disposed around the periphery of the outer mold assembly;

[0016] External platform guardrail one and external platform guardrail two are installed at the free-standing edge of the external platform assembly;

[0017] An external platform ladder connects the base assembly and the external platform assembly;

[0018] Top platform, located at the top of the mold;

[0019] An internal ladder is installed on the central column.

[0020] In one possible implementation, each template unit of the outer mold assembly is connected to a push-pull bracket, the lower part of which engages with a track provided on the base assembly.

[0021] In one possible implementation, the small inner mold module is connected to the inner mold main frame via a positioning cone and bolts; the mixed tower circular mold also includes a small inner mold support rod, one end of which is connected to the small inner mold module and the other end is connected to the central column; the inner mold main frame is also provided with inner mold horizontal support rods.

[0022] In one possible implementation, the pull-and-lock tooling system includes an upper pull-and-lock tooling, a lower pull-and-lock tooling, and a lower tensioning tooling; the mixing tower round mold also includes a positioning tooling and a lifting point tooling, the positioning tooling being disposed on the mating edge of the adjacent outer mold assembly, and the lifting point tooling being disposed on the top platform.

[0023] In one possible implementation, a method of using a detachable inner mold for a mixing tower circular mold is characterized by comprising the following steps:

[0024] S1: Mold cleaning, removing residues from the working surfaces of the outer mold assembly, inner mold assembly, and bottom mold assembly;

[0025] S2: Apply release agent evenly to the cleaned work surface;

[0026] S3: Check the sealing performance and confirm that the non-functional holes on the inner mold assembly have been sealed;

[0027] S4: Mold closing, move the outer mold assembly to the closing position and position it using the positioning fixture, and then lock the mold cavity through the pull and locking fixture system;

[0028] S5: Concrete pouring and curing;

[0029] S6: Remove the template and detach from the mold, including: first, remove the external constraints of the outer mold assembly and move it radially away; then, disassemble the small inner mold module on the inner mold assembly; then, adjust the inner mold diagonal brace to make the inner mold main frame radially retract and move out;

[0030] S7: Return the inner mold to its original position, reposition the removed inner mold main frame and adjust the inner mold diagonal brace (17) to expand it to the working size, and then reinstall the small inner mold module.

[0031] In one possible implementation, in step S4, the mold assembly includes:

[0032] Drive the push-pull frame to move each segment of the outer mold assembly toward the central axis of the mold until they are closed;

[0033] The assembled outer mold assembly is positioned using a positioning fixture.

[0034] The upper tensioning fixture, the lower tensioning fixture, and the lower tensioning fixture are symmetrically and in batches.

[0035] In one possible implementation, step S5, concrete pouring and curing specifically includes:

[0036] Concrete was poured using a multi-point symmetrical method; after pouring, steam curing was performed to increase the concrete strength. Increase to the preset demolding strength .

[0037] In one possible implementation, step S6, removing the template and detaching from the mold, specifically includes:

[0038] Remove the connecting parts between the outer mold assemblies, the upper tie rod, and the lower tie rod;

[0039] The outer mold assembly is moved radially away;

[0040] Remove the small inner mold support rod, disassemble the connector of the small inner mold module, and remove the small inner mold module;

[0041] Adjust the length of the inner mold diagonal brace to shorten it, and drive the inner mold main frame to retract radially until it separates from the inner wall of the concrete component;

[0042] The shrunken inner mold main frame is then lifted away.

[0043] In one possible implementation, step S7, internal mold repositioning, specifically includes:

[0044] The inner mold main frame is hoisted back to the designed position;

[0045] Adjust the inner mold diagonal brace to extend its length, thereby driving the inner mold main frame to expand to the working size;

[0046] The bottom of the inner mold assembly is pre-fixed using the lower tensioning fixture.

[0047] Install the small inner mold module and tighten its connectors, and install and tighten the small inner mold support rod.

[0048] Beneficial effects compared to existing technologies:

[0049] 1. In this solution, by setting up independently detachable small inner mold modules in the inner mold assembly, and matching them with radially adjustable and retractable inner mold diagonal bracing mechanisms, it is possible to remove part of the inner mold first to create operating space during demolding, and then allow the remaining inner mold body to retract as a whole and be easily moved out. This efficiently and completely solves the problem of difficult demolding of inner molds for large circular components, significantly reduces the risk of damage to concrete components during demolding, and improves the turnover speed of formwork and operational safety.

[0050] 2. In this scheme, a multi-level internal support system consisting of a central column, inner mold diagonal bracing, inner mold horizontal bracing, and small inner mold bracing is combined with an internal and external coordinated tensioning and locking system formed by upper tensioning fixtures, lower tensioning fixtures, and lower tensioning fixtures. This ensures the structural rigidity, dimensional stability, and sealing of the inner and outer mold cavities under the lateral pressure of concrete pouring after mold closing, which helps to produce concrete segments with high geometric accuracy and good surface quality.

[0051] 3. In this solution, the inner mold assembly is designed as a combined structure comprising detachable modules and a retractable main body, supplemented by specialized small inner mold support rods and diagonal inner mold support rods. This breaks down the originally complex demolding and repositioning process into clear and reversible mechanical steps such as disassembly, retraction, lifting, repositioning, and installation. This significantly reduces reliance on operator experience and effectively avoids situations requiring heavy lifting equipment for forceful dragging or manual entry into confined spaces for high-risk operations. Thus, while improving demolding efficiency, it also significantly enhances the safety and controllability of the operation process. Attached Figure Description

[0052] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0053] Figure 1 This is a front structural diagram of the mixing tower round mold of the present invention;

[0054] Figure 2 This is a top view of the mixing tower circular mold of the present invention;

[0055] Figure 3 This is another top view of the mixing tower circular mold of the present invention;

[0056] Figure 4 This is a schematic diagram illustrating the usage method of the mixing tower round mold of the present invention.

[0057] Legend: 1. Outer platform railing one; 2. Outer platform railing two; 3. Outer platform ladder; 4. Push-pull frame; 5. Base assembly; 6. Lower tie rod fixture; 7. Outer platform assembly; 8. Outer mold assembly; 9. Bottom mold assembly; 10. Inner mold assembly; 11. Upper tie rod fixture; 12. Lifting point fixture; 13. Positioning fixture; 14. Top platform; 15. Central column; 16. Lower tensioning fixture; 17. Inner mold diagonal brace; 18. Small inner mold support rod; 19. Inner mold horizontal support rod; 20. Internal ladder. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0059] It should be noted that in the description of this invention, the terms "connection," "fixed," and "set," etc., should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "upper," "lower," "inner," "outer," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0060] The technical solutions in this application are designed to address the problems described in the background, and are generally as follows:

[0061] Example:

[0062] Please combine Figures 1 to 3 This embodiment introduces a detachable inner mold for a precast concrete wind turbine tower (precast tower) and its usage method. More specifically, this embodiment provides a stable, easy-to-operate, and easily detachable precast concrete wind turbine tower (precast tower) component forming process, along with its matching usage method, for a large-size, precast round molding process. The following is a detailed description of the overall structural composition of the mold and the connection relationships between its components.

[0063] The detachable inner mold of this hybrid tower circular mold is constructed around a stable base and an openable outer mold system, integrating a unique detachable inner mold system. The basic support structure of this mold is the base assembly 5. The base assembly 5 is typically a rigid rectangular frame welded from large steel sections, and its bottom may integrate a set of wheels or a slider that engages with a pre-set ground track to facilitate the overall movement and positioning of the mold in the workshop. This base assembly 5 provides an installation reference and support platform for all components above it.

[0064] On the upper surface of the base assembly 5, the bottom mold assembly 9 is fixedly connected by bolts. The bottom mold assembly 9 is a key component that forms the shape of the bottom end face of the mixing tower segment. Its working surface is a precisely machined arc-shaped surface, the curvature of which matches the outer diameter of the tower segment to be produced. The firm connection between the bottom mold assembly 9 and the base assembly 5 ensures that the bottom forming surface will not shift or deform under the huge load of subsequent concrete pouring.

[0065] Surrounding the circumferential edge of the bottom mold assembly 9 is an outer mold assembly 8 that forms the outer wall forming surface of the tower. To achieve efficient mold assembly and demolding, the outer mold assembly 8 is typically designed as four independent mold plate units evenly divided circumferentially. Each outer mold plate unit is connected to the drive mechanism via a rigidly connected push-pull bracket 4. The lower part of the push-pull bracket 4 engages with a dedicated track set on the base assembly 5 via a slider, allowing the entire outer mold unit to slide smoothly along the radial direction of the mold under external force. When the four outer mold plates 8 move simultaneously toward the central axis of the mold and close together, their adjacent vertical splicing surfaces will fit tightly together.

[0066] To quickly and accurately fix the relative positions of each outer mold segment after mold closing, the mold is equipped with positioning fixtures 13. Positioning fixtures 13 typically include pins and sleeves located on the mating edges of adjacent outer molds. Inserting the pins after mold closing achieves initial radial and circumferential positioning. Based on this, the final tightening and sealing of the outer mold assembly 8 is completed by tightening the bolts located on the mating flange, preventing concrete grout leakage from the joints.

[0067] To provide construction workers with a safe and convenient circumferential working passage, an outer platform assembly 7 is installed around the closed outer formwork assembly 8. The outer platform assembly 7 is a steel structure walkway platform surrounding the formwork. At the open edge of this platform, two vertical outer platform guardrails, 1 and 2, are installed, fixedly connected to the platform frame via columns to form a continuous safety railing. To facilitate personnel access to the outer platform from the ground, an outer platform ladder 3 is also provided. The lower end of the ladder is fixed to the base assembly 5, and the upper end connects to the outer platform assembly 7.

[0068] The core of the mold forming system lies in its internal forming unit, namely the inner mold assembly 10. The inner mold assembly 10 is used to form the inner wall curved surface of the mixed tower tube segments, and its overall structure is a radially adjustable annular frame. This frame is composed of multiple arc-shaped template units assembled via hinges or detachable connectors. The top of the inner mold assembly 10 is connected to the external structure via an upper tensioning fixture 11, and its bottom is anchored to the bottom mold assembly 9 via a lower tensioning fixture 16, thus being tensioned and fixed in the vertical direction. The inner mold assembly 10 contains at least two independently detachable small inner mold modules. These two small inner mold modules are connected to the main inner mold frame via positioning cones and bolts, and can be individually removed when needed, thereby forming a notch on the annular inner mold.

[0069] To ensure the roundness, rigidity, and positional accuracy of the inner mold assembly 10 in the closed state, and to support its retractable function, a multi-stage support system is installed inside the mold. First, a central column 15 is vertically erected at the geometric center of the mold. The central column 15 extends upwards from the base assembly 5, connecting to the top platform 14 at its top; it serves as the central reference and main load-bearing member within the mold. The back of the inner mold assembly 10 is connected to the central column 15 via multiple diagonal bracing rods 17. The two ends of the diagonal bracing rods 17 are typically connected by adjustable-length screw mechanisms, allowing the length of the bracing rods to be changed, thus enabling the inner mold assembly 10 to actively retract towards the central column 15 or expand outwards. Furthermore, within the annular frame of the inner mold assembly 10, horizontal inner mold bracing rods 19 are arranged circumferentially and radially. These rods enhance the structural grid rigidity of the inner mold itself, resisting lateral pressure from the concrete. Small inner mold bracing rods 18 are also specifically configured for detachable small inner mold modules. One end of the small inner mold support rod 18 is connected to the back reinforcing rib of the small inner mold module, and the other end is connected to the central column 15. Its function is to stably support the small inner mold during pouring, and it needs to be loosened before disassembling the small inner mold.

[0070] The mold has a top platform 14, which is connected to the top of the central column 15 and the top structure of the outer mold via radial support beams, forming an upper working surface. Lifting fixtures 12 are fixedly installed on the beam system of the top platform 14 for lifting the mold as a whole or large components. To balance the enormous lateral pressure acting on the outer and inner molds during concrete pouring, the mold has multiple vertical tie-down systems. The upper tie-down fixture 11 consists of high-strength tie rods passing through the area above the concrete cavity, with both ends anchored to the top of the two opposing outer mold assemblies 8. Similarly, a lower tie-down fixture 6 is provided near the bottom mold, operating on a similar principle to the upper tie-down fixture 11. These tie-down fixtures work in conjunction with the lower tensioning fixture 16 used to pull down and fix the bottom of the inner mold, connecting the outer mold, inner mold, and bottom mold into a complete stress-bearing system capable of withstanding internal pressure.

[0071] To facilitate personnel access to the mold for cleaning, inspection, and disassembly of the inner mold, an internal ladder 20 is fixedly installed on the central column 15. The ladder extends upward from near the base to near the top platform 14, providing a safe vertical passage.

[0072] In summary, this mold has a stable foundation formed by the base assembly 5 and the bottom mold assembly 9; an openable outer mold cavity is formed by the radially sliding four-lobed outer mold assembly 8; an inner mold cavity is formed by the inner mold assembly 10, which integrates a detachable small inner mold module and is supported and adjusted by the central column 15, the inner mold diagonal support rod 17, the inner mold horizontal support rod 19, and the small inner mold support rod 18; the mold cavity is locked by the upper tensioning fixture 11, the lower tensioning fixture 6, and the lower tensioning fixture 16; and the outer platform assembly 7, the top platform 14, and the corresponding guardrail ladder provide a full-range working space, together forming a complete and reasonably operable detachable inner mold for mixing towers.

[0073] Please combine Figure 4 After providing a detailed description of the mold structure, the specific usage method of this mixed-tower circular mold will be explained step by step below. This method, corresponding to the structural characteristics of the mold, forms a logically coherent and orderly standardized construction process, consisting of seven main steps.

[0074] S1: Mold Cleaning

[0075] This step aims to ensure the cleanliness of the mold's forming surfaces, resulting in a smooth concrete component. Operators use a scraper to thoroughly remove concrete residue adhering to all panels of the outer mold assembly 8, inner mold assembly 10, and bottom mold assembly 9. Subsequently, a broom is used to sweep away the scraped residue and dust. Finally, a dry cloth is used to thoroughly wipe the cleaned panels to remove any loose dust and debris. Through this series of operations, all working surfaces of the mold that come into contact with concrete are cleaned, preventing residue from affecting the surface quality of the newly poured concrete or causing difficulties in demolding.

[0076] S2: Apply release agent

[0077] The function of this step is to form an effective release film on the cleaned mold panels to ensure smooth demolding after the concrete hardens and the component surface remains intact. The operator uses a manual sprayer to evenly spray the release agent onto the cleaned panels of the outer mold assembly 8, inner mold assembly 10, and bottom mold assembly 9. Immediately after spraying, a paint roller is used to carefully and evenly apply the release agent. During application, it is essential to ensure that the release agent covers the entire working surface without omissions or accumulation, forming a continuous and uniform film. This film effectively reduces the adhesion between the concrete and the formwork, and is a crucial pretreatment for achieving subsequent non-destructive demolding.

[0078] S3: Check the seal

[0079] The core function of this step is to confirm the airtightness of the mold system before concrete pouring, eliminating the risk of grout leakage. After the precast reinforcing cage is hoisted and positioned into the annular cavity formed by the bottom mold assembly 9, the outer mold assembly 8, and the inner mold assembly 10, the operator must focus on inspecting all non-functional holes on the inner mold assembly 10. These holes may include process holes, old connection holes, etc. It must be confirmed that each such hole has been tightly sealed using a dedicated rubber plug, sealing plug, or quick-setting material. This inspection is crucial because any unsealed hole may become a grout leakage point under the high pressure of concrete pouring, leading to component defects, material waste, and increased cleaning workload.

[0080] S4: Mold closing

[0081] The goal of this step is to precisely assemble and securely lock all independent template units to form a rigid, precisely sized, and tightly sealed molding cavity. First, the outer mold is closed. The operator slowly pushes or starts the drive unit, causing the four sets of push-pull frames 4 to move the corresponding outer mold assemblies 8 synchronously along the track towards the mold's central axis. The mold closing action stops once all outer molds are fully fitted to the sides of the bottom mold assembly 9 and the vertical joints between each outer mold segment are tightly closed. Next, the outer mold is fixed: the positioning pins of the positioning fixture 13 are inserted into the corresponding pin sleeves on the mating edges of adjacent outer molds for quick positioning. Then, all connecting bolts on the mating flanges are tightened to complete the splicing and fastening of the outer mold assembly 8. Finally, the entire mold cavity is locked: the upper tensioning fixture 11, the lower tensioning fixture 6, and the lower tensioning fixture 16 are installed and tightened sequentially. During operation, the nuts of these fixtures must be tightened symmetrically and in batches to ensure uniform preload. The upper tie rod 11 and the lower tie rod 6 pull the four outer mold assemblies 8 in pairs, together with the inner mold assembly 10, to resist the circumferential lateral pressure of the concrete. Meanwhile, the lower tensioning rod 16 pulls the inner mold assembly 10 downwards and fixes it to the bottom mold assembly 9 from the bottom, preventing the inner mold from floating. Through the locking operation of this system, the outer mold, inner mold, and bottom mold are connected into a solid whole, ensuring the stability and sealing of the mold cavity geometry during the pouring process.

[0082] S5: Concrete Pouring and Curing

[0083] The core of this step is to ensure that the concrete is uniformly and densely filled and shaped within the sealed mold cavity, and to quickly reach the required strength through controlled curing. The concrete pouring employs a multi-point symmetrical feeding method. Multiple feeding points are evenly distributed around the top perimeter of the mold. Using concrete pumping equipment or a placing boom, the feeding speed and volume at each point are controlled to be essentially consistent, ensuring that the concrete rises evenly within the mold cavity. This method avoids the excessive localized pressure on the mold caused by concentrated feeding at a single point. The risk is that the bias pressure may cause slight deformation or displacement of the formwork. During the pouring process, an immersion vibrator should be used to ensure thorough compaction of the concrete and remove air bubbles. After pouring, the steam curing stage begins. Once the concrete has initially set, the steam curing system is activated. An insulating curing cover is placed around the mold, and saturated steam is introduced to maintain the mold and components in a constant temperature and humidity environment. Curing temperature... Generally, the temperature should be controlled between 50℃ and 60℃, and the curing time... The curing time is determined based on the concrete mix design and demolding strength requirements, and typically lasts for more than 12 hours. This curing regimen aims to accelerate the cement hydration process and increase the concrete strength. Rapid growth is expected to achieve the pre-set demolding strength in a relatively short period of time. .

[0084] S6: Remove template and detach from mold

[0085] This step achieves efficient and non-destructive demolding of the concrete component by performing specific sequential operations, particularly the disassembly and shrinkage of the inner mold assembly 10. This is done when the concrete strength is measured or estimated. Achieve demolding strength Then, the demolding operation begins. First, the outer mold constraints are removed: all connecting bolts of the flanges connecting the outer mold assemblies 8 are removed in sequence, the positioning pins of the positioning fixture 13 are pulled out, and then the upper tie fixture 11 and the lower tie fixture 6 are removed. After all external constraints are removed, the drive device is slowly operated to move the four-lobed outer mold assembly 8 radially outward synchronously through the push-pull bracket 4, so that it is completely separated from the outer surface of the concrete component. After the outer mold is removed, there are no constraints on the outside of the component. Next, the inner mold disassembly and removal operation is performed, which is divided into two sub-stages. Stage 1: Disassembly of the detachable small inner mold modules. The operator enters the mold and first loosens and removes the connection of the small inner mold support rods 18 used to fix the two small inner mold modules. Then, the positioning cones and bolts connecting the small inner mold modules to the inner mold main frame are removed. After these connections are removed, the two independent small inner mold modules can be removed from the annular inner mold assembly 10. This operation creates two large operating windows on the complete inner mold ring. Stage 2: Shrinking and removing the remaining inner mold body. The operator adjusts all the inner mold diagonal braces 17 (the inner mold diagonal braces 17 typically use a rotatable support screw structure) supporting the main body of the inner mold, and adjusts the length of the braces by rotating the screw. This shortening causes the remaining, still connected, inner mold main frame to shrink radially towards the mold center (i.e., towards the central column 15). Since the concrete has hardened at this point, when the inner mold main body shrinks a certain distance... Then, its curved panel completely detaches from the inner wall surface of the concrete component. Finally, using the lifting point fixture 12 or other lifting tools set at the top, the main body of the inner mold that has shrunk and detached is lifted out of the interior area of ​​the concrete component.

[0086] S7: Inner mold return to position

[0087] The function of this step is to reassemble and fix the disassembled inner mold system to a working state after the completion of this component production, preparing for the next production cycle. After the concrete segments are transported away, the main body of the inner mold is first hoisted back to the center position of the mold. By adjusting the support screw of the inner mold diagonal brace 17 in the reverse direction, the main frame of the inner mold is slowly pushed outward until it returns to the design size. Then, the bottom of the inner mold assembly 10 is pre-fixed to the bottom mold assembly 9 using the lower tensioning fixture 16. Next, the two previously disassembled small inner mold modules are hoisted to their designed installation positions, positioned using positioning cones, and then firmly connected to the main frame of the inner mold using bolts. The corresponding small inner mold support rods 18 are reinstalled and tightened. All inner mold connection points and support points are checked to ensure that their connections are stable and their positions are accurate. Finally, the outer mold assembly 8 is pushed to a position close to the mold closing position for quick mold closing next time. At this point, the mold system (except for applying the release agent) has been essentially restored to its initial ready-to-use state before step S1, completing a full usage cycle. For the next production run, simply repeat the above process starting from step S1.

[0088] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A detachable inner mold for a mixing tower forming a circular shape, characterized in that, include: Base assembly (5); The bottom mold assembly (9) is fixed on the base assembly (5); The outer mold assembly (8) surrounds the circumferential edge of the bottom mold assembly (9) and includes a multi-lobed template unit that can move radially. The inner mold assembly (10) is disposed in the space enclosed by the bottom mold assembly (9) and the outer mold assembly (8). The inner mold assembly (10) includes an inner mold main frame that can be radially adjusted in size and at least two small inner mold modules that can be independently detached from the inner mold main frame. The central column (15) is vertically positioned at the geometric center of the mold; The inner mold diagonal brace (17) is connected between the central column (15) and the inner mold main frame; A pull and locking tooling system is connected between the outer mold assembly (8), the inner mold assembly (10), and the bottom mold assembly (9).

2. The mixing tower round mold with detachable inner mold as described in claim 1, characterized in that, The mixing tower round mold also includes: The outer platform assembly (7) is disposed around the periphery of the outer mold assembly (8); External platform guardrail one (1) and external platform guardrail two (2) are set at the free edge of the external platform assembly (7); An outer platform ladder (3) is connected between the base assembly (5) and the outer platform assembly (7); Top platform (14) is located on top of the mold; An internal ladder (20) is installed on the central column (15).

3. The mixing tower round mold with detachable inner mold as described in claim 1, characterized in that, Each of the template units of the outer mold assembly (8) is connected to a push-pull bracket (4), and the lower part of the push-pull bracket (4) is engaged with a track set on the base assembly (5).

4. The mixing tower round mold with detachable inner mold as described in claim 1, characterized in that, The small inner mold module is connected to the inner mold main frame by a positioning cone and bolts; the mixed tower round mold also includes a small inner mold support rod (18), one end of the small inner mold support rod (18) is connected to the small inner mold module, and the other end is connected to the central column (15); the inner mold main frame is also provided with an inner mold horizontal support rod (19).

5. A detachable inner mold for a mixing tower forming a circle, as described in claim 1, characterized in that, The tensioning and locking fixture system includes an upper tensioning fixture (11), a lower tensioning fixture (6), and a lower tensioning fixture (16); the mixing tower round mold also includes a positioning fixture (13) and a lifting point fixture (12). The positioning fixture (13) is located on the mating edge of the adjacent outer mold assembly (8), and the lifting point fixture (12) is located on the top platform (14).

6. A method of using a mixing tower round mold with a detachable inner mold as described in any one of claims 1 to 5, characterized in that, Includes the following steps: S1: Mold cleaning, removing residues from the working surfaces of the outer mold assembly (8), inner mold assembly (10) and bottom mold assembly (9); S2: Apply release agent evenly to the cleaned work surface; S3: Check the sealing performance and confirm that the non-functional holes on the inner mold assembly (10) have been sealed; S4: Mold closing, move the outer mold assembly (8) to the closing position and position it using the positioning fixture (13), and then lock the mold cavity by the pull and locking fixture system; S5: Concrete pouring and curing; S6: Remove the template and detach from the mold, including: first, remove the external constraints of the outer mold assembly (8) and move it radially away; then, disassemble the small inner mold module on the inner mold assembly (10); then, adjust the inner mold diagonal brace (17) so that the inner mold main frame is radially contracted and moved out; S7: Return the inner mold to its original position, reposition the removed inner mold main frame and adjust the inner mold diagonal brace (17) to expand it to the working size, and then reinstall the small inner mold module.

7. The method of using the detachable inner mold of the mixing tower round mold as described in claim 6, characterized in that, In step S4, the mold assembly includes: Drive the push-pull frame (4) to move each of the outer mold assemblies (8) toward the central axis of the mold until they are closed; The outer mold assembly (8) after being joined is positioned using a positioning fixture (13); The upper tensioning fixture (11), the lower tensioning fixture (6), and the lower tensioning fixture (16) are symmetrically and in batches tightened.

8. The method of using a detachable inner mold for a mixing tower circular mold as described in claim 6, characterized in that, Step S5, concrete pouring and curing specifically includes: Concrete was poured using a multi-point symmetrical method; after pouring, steam curing was performed to increase the concrete strength. Increase to the preset demolding strength .

9. The method of using a detachable inner mold for a mixing tower circular mold as described in claim 6, characterized in that, In step S6, removing the template and detaching from the mold specifically includes: Remove the connecting parts between the outer mold assemblies (8), the upper tie rod (11), and the lower tie rod (6). The outer mold assembly (8) is moved radially away; Remove the small inner mold support rod (18), disassemble the connector of the small inner mold module, and remove the small inner mold module; Adjust the length of the inner mold diagonal brace (17) to shorten it, and drive the inner mold main frame to retract radially until it separates from the inner wall of the concrete component; The shrunken inner mold main frame is then lifted away.

10. The method of using a detachable inner mold for a mixing tower circular mold as described in claim 6, characterized in that, In step S7, the internal mold repositioning specifically includes: The inner mold main frame is hoisted back to the designed position; Adjust the inner mold diagonal brace (17) to extend its length, and drive the inner mold main frame to expand to the working size; The bottom of the inner mold assembly (10) is pre-fixed using the lower tensioning fixture (16); Install the small inner mold module and tighten its connectors, and install and tighten the small inner mold support rod (18).

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