A special-shaped box culvert and pipe joint prefabricated mold core mold support system

Abstract

The utility model discloses a kind of precast mould core mould support system of special-shaped box culvert and pipe section, belong to civil engineering prefabricated component construction technical field.The system includes needle beam (1), core mould frame (2), template system (3), hydraulic system (4) and support system;Core mould frame (2) is movably arranged on needle beam (1);Template system (3) includes side mould (31) and top die (32);Hydraulic system (4) is driven by template action oil cylinder (41) mold closing and stripping with template system (3), core mould frame (2) is driven by moving mould oil cylinder (42) and needle beam (1) relative movement;Support system is arranged at the end of needle beam (1), for adjusting and fixing the height of entire system.The utility model realizes quick moving mould and template automatic opening and closing, avoids worker into mould manual disassembly template, improves prefabrication efficiency, precision and security.

Description

Technical Field

[0001] This utility model relates to the field of precast component construction technology in civil engineering, specifically to a precast mold core support system for concrete components such as irregular box culverts and pipe sections. Background Technology

[0002] In municipal, water conservancy, and tunnel engineering projects, large concrete components such as box culverts and pipe sections are often constructed using precast assembly methods. Among these, the "long-line close-joint sequential construction method" is a key method to ensure the accurate and precise overlapping and assembly of box culverts and pipe sections. This method uses already poured segments as matching ends and continuously pours each segment, requiring extremely high construction precision and efficiency.

[0003] Currently, the core molds used in the prefabrication process are mostly assembled manually on-site using small templates. This traditional process has the following drawbacks:

[0004] 1. Low efficiency: The assembly and disassembly of each segment require a large amount of manual labor for splicing, support and reinforcement, and disassembly piece by piece. The operation is cumbersome and the adjustment cycle is long. Practice shows that the formwork erection and disassembly of a single segment can take up to 4 days, which seriously restricts the overall construction progress.

[0005] 2. High safety risks: Workers need to work inside the narrow and enclosed mold. The space is limited and they cannot walk upright, which makes them prone to accidents such as bumping their hands and feet or hitting their heads. The safety hazards are prominent.

[0006] 3. Difficulty in precision control: Manual installation makes it difficult to ensure the consistency of the formwork position and shape each time, resulting in large deviations in the size of precast components, which affects the quality of subsequent splicing and the control of the alignment.

[0007] 4. Low level of automation: It lacks overall mobility, cannot achieve rapid turnover, and is difficult to meet the development needs of modern, industrialized and intelligent construction.

[0008] Therefore, there is an urgent need in this field for a new type of core mold support system that can realize hydraulic automatic demolding, mold closing and overall mold transfer, improve construction efficiency, ensure operation safety, improve prefabrication accuracy and meet the requirements of continuous construction in long-line methods. Summary of the Invention

[0009] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing technology and provide a precast core mold support system for irregular box culverts and pipe sections. By integrating a needle beam structure, a movable core mold frame, a hydraulic drive device and a mechanical locking mechanism, the system can achieve automated demolding, mold closing and overall longitudinal movement of the core mold system, which greatly improves construction efficiency and safety and is suitable for long-line sequential construction scenarios.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A precast core mold support system for irregularly shaped box culverts and pipe sections includes:

[0012] The needle beam (1) is set to be able to span at least two prefabricated segments to ensure a smooth transition between adjacent segments;

[0013] The core mold frame (2) is set on the needle beam (1) by a moving mechanism and can move longitudinally along the needle beam (1) to support the template system (3) and transmit power;

[0014] The template system (3), connected to the core mold frame (2), includes side molds (31) and top molds (32) that form the cavity of the precast component, which can be expanded or contracted according to construction needs to form a precise molding space;

[0015] The hydraulic system (4) includes a template action cylinder (41) for driving the template system (3) to close and detach, and a mold moving cylinder (42) for driving the core mold frame (2) and the pin beam (1) to move relative to each other; wherein, the template action cylinder (41) is connected between the core mold frame (2) and the template system (3) to drive the opening and closing of the side mold (31) and the top mold (32); the mold moving cylinder (42) is connected between the pin beam (1) and the core mold frame (2) to push the two to move relative to each other longitudinally;

[0016] A support system, located at the end of the needle beam (1), is used to adjust and fix the height of the entire system.

[0017] Furthermore, the moving mechanism includes a roller (5) disposed on the core mold frame (2) and a track (6) disposed on the needle beam (1) and cooperating with the roller (5). The roller (5) and the track (6) cooperate to realize the smooth sliding of the core mold frame (2) along the needle beam (1).

[0018] Furthermore, the hydraulic system (4) also includes a lifting cylinder (43) located at the end of the needle beam (1). The lifting cylinder (43) is used to adjust the height of the entire system to adapt to different elevation requirements. The lifting cylinder (43) constitutes part of the support system.

[0019] Furthermore, the support system also includes a mechanical support screw (9), which is used for mechanical locking after the lifting cylinder (43) completes the height adjustment. It provides stable support through mechanical locking, enhances the system's anti-disturbance capability, and ensures construction safety.

[0020] Furthermore, the template system (3) is connected to the core mold frame (2) through the guide device (7). The guide device (7) allows the side mold (31) to move in the horizontal direction, ensuring that the template moves accurately and runs smoothly during the expansion and contraction process, and avoiding uneven loading or jamming.

[0021] Furthermore, the template system (3) is connected to the core mold frame (2) via a support screw (8), which is used to adjust the height of the top mold (32).

[0022] Furthermore, the lifting cylinder (43) is mounted on a laterally movable device, which enables the lifting cylinder (43) to move laterally to adjust its lifting support position at the end of the needle beam (1).

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Significantly improve construction efficiency: The hydraulic system enables automated demolding, mold closing, and overall movement of the core mold, reducing the time for each segment's formwork support and dismantling from approximately 4 days to just a few hours, significantly accelerating the construction pace and increasing production efficiency.

[0025] 2. Ensure construction safety: Completely avoid workers entering the mold to carry out high-risk manual disassembly and assembly operations, eliminate safety hazards such as bumps and squeezing caused by the confined space, and realize "unmanned" in-mold operation.

[0026] 3. Improve prefabrication accuracy: Mechanized positioning and synchronous action ensure spatial consistency of each formwork support, effectively improving the geometric dimensional accuracy and surface flatness of prefabricated components, which is beneficial to subsequent splicing quality and alignment control.

[0027] 4. Enables rapid turnover: The needle beam structure design allows the core mold system to move quickly between adjacent segments as a whole without repeated disassembly and assembly. It is particularly suitable for long-line and close-joint sequential construction, which greatly improves the utilization rate of the template and the turnover rate of the equipment.

[0028] 5. Stable and reliable structure: Combining hydraulic drive and mechanical locking (such as mechanical support screw (9)), it not only achieves efficient operation, but also ensures the structural stability during the pouring process, taking into account both efficiency and safety. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the core mold support system of this utility model (in the mold-closed state).

[0030] Figure 2 This is a side view of the core mold support system of this utility model.

[0031] Figure 3 This is a schematic diagram of the state of the core mold support system of this utility model during the demolding process.

[0032] Figure 4 This is a partially enlarged schematic diagram of the connection structure between the template system and the core mold frame of this utility model.

[0033] Explanation of the numbers in the diagram: 1—Needle beam; 2—Core mold frame; 3—Template system; 31—Side mold; 32—Top mold; 4—Hydraulic system; 41—Template action cylinder; 42—Mold moving cylinder; 43—Lifting cylinder; 5—Roller; 6—Rail; 7—Guiding device; 8—Support screw; 9—Mechanical support screw. Detailed Implementation

[0034] The working process of this utility model will be further explained below with reference to the accompanying drawings.

[0035] 1. Initial state: The first segment of concrete has been poured and cured, and the system is in the closed formwork state (e.g., Figure 1 As shown in the image, it is ready to proceed to the demolding process.

[0036] 2. Demolding stage: Start the hydraulic system (4), the template action cylinder (41) retracts, driving the top mold (32) down, and at the same time the template action cylinder (41) moves to make the side mold (31) retract inward, and the lower corner mold of the inner cavity retracts synchronously, so that the entire template system (3) is completely separated from the hardened concrete inner wall (e.g. Figure 3 (As shown).

[0037] 3. Mold transfer stage: The mold transfer cylinder (42) extends and pushes the core mold frame (2) and its connected template system (3) forward along the track (6) on the needle beam (1) to accurately position it to the design position of the next segment to be poured.

[0038] 4. Mold Closing Stage: Upon reaching the new workstation, the template action cylinder (41) extends, pushing the side mold (31) outward and the top mold (32) upward. The inner cavity corner mold is re-supported into place until the designed cross-sectional outline (i.e., the designed outline) is reached, completing the mold closing action and forming a complete inner mold space (e.g., ...). Figure 1 , Figure 4 (As shown).

[0039] 5. Needle beam forward movement stage: Loosen the support system (including the lifting cylinder (43) and mechanical support screw (9)) at the end of the needle beam (1), so that the needle beam (1) moves forward by one segment distance, and then is fixed again by the support system to prepare for the next cycle of pouring.

[0040] Through the above-mentioned cyclical operation of "demolding - mold transfer - mold closing - needle beam forward movement", the core mold system can achieve continuous, efficient and automated construction. It is particularly suitable for long-line method and close-joint method sequential construction and can be used for the mass production of various precast concrete components such as irregular box culverts, circular or rectangular pipe sections.

[0041] The above description is merely a preferred embodiment of this utility model and does not limit the scope of patent protection for this utility model. Any equivalent structural modifications made based on the description and drawings of this utility model, or direct or indirect applications to other related technical fields, should be included within the scope of patent protection for this utility model.

Claims

1. A prefabrication core mold support system for irregularly shaped box culverts and pipe sections, characterized in that, include: Needle beam (1), the length of which is set to be able to span at least two precast segments; The core mold frame (2) is set on the needle beam (1) by a moving mechanism and can move longitudinally along the needle beam (1); The template system (3) is connected to the core mold frame (2) and includes a side mold (31) and a top mold (32). The hydraulic system (4) includes a template action cylinder (41) for driving the template system (3) to close and release the mold, and a mold moving cylinder (42) for driving the core mold frame (2) and the pin beam (1) to move relative to each other. A support system, located at the end of the needle beam (1), is used to adjust and fix the height of the entire system.

2. The precast mold core mold support system according to claim 1, characterized in that, The moving mechanism includes a roller (5) mounted on the core mold frame (2) and a track (6) mounted on the needle beam (1) and cooperating with the roller (5).

3. The precast mold core mold support system according to claim 1, characterized in that, The hydraulic system (4) also includes a lifting cylinder (43) located at the end of the needle beam (1), which forms part of the support system.

4. The precast mold core mold support system according to claim 3, characterized in that, The support system also includes a mechanical support screw (9), which is used for mechanical locking after the lifting cylinder (43) completes the height adjustment.

5. The precast mold core mold support system according to claim 1, characterized in that, The template system (3) is connected to the core mold frame (2) via a guide device (7), which allows the side mold (31) to move in the horizontal direction.

6. The precast mold core mold support system according to claim 1, characterized in that, The template system (3) is connected to the core mold frame (2) via a support screw (8), which is used to adjust the height of the top mold (32).

7. The precast mold core mold support system according to claim 3, characterized in that, The lifting cylinder (43) is mounted on a device that can move laterally.

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