Manufacturing mold of RPC steel bar box culvert

Abstract

The utility model discloses a manufacturing mould of an RPC steel bar box culvert, which comprises a base, an outer mould assembly is arranged on the base, and the outer mould assembly comprises a bottom plate fixedly connected to the base, two side plates movably abutted against two opposite ends of the bottom plate, and cover plate assemblies detachably connected to the two ends of the bottom plate and the two ends of the side plates. A molding cavity is formed in the outer mold assembly; the inner mold assembly comprises an inner mold frame body and an inner connecting plate detachably connected with the inner mold frame body, a threaded supporting rod is arranged in the inner mold frame body, and the inner mold assembly is arranged in the molding cavity and detachably connected with the cover plate assembly; according to the utility model, the flexibility and reusability of the mould are greatly improved, the mould is convenient to assemble, disassemble and clean, and the production cost and the maintenance difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of box culvert mold technology, and in particular to a manufacturing mold for an RPC reinforced box culvert. Background Technology

[0002] In the construction of highways, reinforced concrete box culverts are a crucial component. As a core part of the infrastructure, they not only bear the heavy responsibility of supporting the road and distributing loads, but also ensure the safety and stability of the highway under adverse weather conditions and long-term use through their superior strength and durability. The meticulous design and construction of reinforced concrete box culverts directly affect the overall quality and service life of the highway, and have immeasurable value in improving traffic efficiency and promoting regional economic development.

[0003] However, the box culvert manufacturing molds widely used in the current market are generally bulky, occupying a large amount of production space and increasing the difficulty of transportation and storage. During mold assembly, due to the numerous components and complex structure, multiple technicians often need to work together, requiring high precision, resulting in long processing times and a high risk of assembly errors, thus affecting production efficiency and product quality stability. Furthermore, the demolding process after the box culvert product has cured is equally cumbersome and challenging. Because there may be strong adhesion or jamming between the mold and the box culvert, demolding often requires specialized release agents or mechanical aids. Improper operation can also damage or deform the box culvert surface, affecting the product's appearance and performance. For example, Chinese Patent No. 215618854 and Chinese Patent No. 217144686 suffer from the aforementioned problems.

[0004] Based on this, a new type of box culvert manufacturing mold is needed. This mold significantly enhances the flexibility and reusability of the mold, greatly facilitates the rapid assembly, easy disassembly and efficient cleaning process, thereby effectively reducing production costs and simplifying the complexity of maintenance work. Utility Model Content

[0005] This utility model provides a manufacturing mold for RPC reinforced concrete box culverts, comprising:

[0006] The base has an outer mold assembly, which includes a base plate fixedly connected to the base, two side plates that movably abut against opposite ends of the base plate, and a cover plate assembly detachably connected to the ends of the base plate and the side plates. The outer mold assembly forms a molding cavity.

[0007] The inner mold assembly includes an inner mold frame and a detachable inner plate connecting the inner mold frame. A threaded support rod is provided in the inner mold frame. The inner mold assembly is disposed in the molding cavity and is detachably connected to the cover plate assembly.

[0008] Furthermore, a threaded adjusting rod is provided between the side plate and the base, wherein a first hinge portion is provided on the side plate to hinge one end of the threaded adjusting rod, and a second hinge portion is provided on one end of the base to hinge the other end of the threaded adjusting rod.

[0009] Furthermore, a bent protrusion is formed at the lower end of the side plate, a third hinge portion is provided on the bent protrusion, and a fourth hinge portion is provided on the base to hinge the third hinge portion.

[0010] Furthermore, the inner mold frame includes a first support plate and a second support plate opposite to each other, and a threaded support rod is attached between the first support plate and the second support plate.

[0011] Furthermore, the cover plate assembly includes a female end cover plate and a male end cover plate respectively disposed at both ends of the bottom plate and the side plate, wherein a female end protrusion is provided on the female end cover plate and a male end groove is provided on the male end cover plate.

[0012] Furthermore, a first fixing hole for connecting the cover plate assembly is provided at both ends of the base plate, a second fixing hole corresponding to the first fixing hole is provided on the female end cover plate, and a third fixing hole corresponding to the first fixing hole is provided on the male end cover plate. The base plate and the cover plate assembly are detachably fixedly connected by the first fastener.

[0013] Furthermore, a fourth fixing hole for connecting the cover plate assembly is provided at both ends of the side plate, a fifth fixing hole corresponding to the fourth fixing hole is provided on the female end cover plate, and a sixth fixing hole corresponding to the fourth fixing hole is provided on the male end cover plate. The side plate and the cover plate assembly are detachably fixedly connected by the second fastener.

[0014] Furthermore, a seventh fixing hole for connecting the cover plate assembly is provided at both ends of the inner mold frame, an eighth fixing hole corresponding to the seventh fixing hole is provided on the female end cover plate, and a ninth fixing hole corresponding to the seventh fixing hole is provided on the male end cover plate. The inner mold frame and the cover plate assembly are detachably fixedly connected by a third fastener.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, the design of detachable side plates, cover plate assemblies, and inner mold assemblies greatly improves the flexibility and reusability of the mold. This design facilitates the assembly, disassembly, and cleaning of the mold, reducing production costs and maintenance difficulties. The threaded support rod in the inner mold assembly not only provides a stable support structure but also ensures the accuracy of the internal structure of the box culvert, avoiding the impact on product quality due to deformation during the casting process. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0018] In the attached image:

[0019] Figure 1 A partial schematic diagram of the manufacturing mold for RPC reinforced concrete box culverts;

[0020] Figure 2 A sectional view of the manufacturing mold for RPC reinforced concrete box culverts;

[0021] Figure 3 This is a schematic diagram of the base;

[0022] Figure 4 This is a schematic diagram of the side panel;

[0023] Figure 5 This is a schematic diagram of the inner mold frame;

[0024] Figure 6 This is a schematic diagram of the female end cover plate;

[0025] Figure 7 This is a side view of the female end cover plate;

[0026] Figure 8 This is a schematic diagram of the male end cover plate;

[0027] Figure 9 This is a side view of the male end cover plate. Detailed Implementation

[0028] The technical solution of this utility model will now be described with reference to the accompanying drawings. However, the described embodiments are only a part of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] like Figures 1 to 9 As shown, this utility model provides a manufacturing mold for RPC reinforced box culverts, including a base 1, an outer mold assembly 20 is provided on the base 1, the outer mold assembly 20 includes a bottom plate 21 fixedly connected to the base 1, two side plates 22 that movably abut against the opposite ends of the bottom plate 21, and a cover plate assembly 23 detachably connected to the bottom plate 21 and the side plates 22, and the outer mold assembly 20 forms a plastic cavity 24;

[0030] The inner mold assembly 30 includes an inner mold frame 31 and a detachable inner connecting plate 32 that connects to the inner mold frame 31. A threaded support rod 33 is provided in the inner mold frame 31. The inner mold assembly is disposed in the molding cavity 24 and is detachably connected to the cover plate assembly 23.

[0031] Specifically, the base plate is fixedly connected to the base, forming the basic support surface of the mold. The side plates are designed to be movable, allowing them to flexibly abut against the opposite ends of the base plate to adapt to the manufacturing needs of box culverts of different sizes. The cover plate assembly is tightly connected to the ends of the base plate and the side plates, effectively sealing the molding cavity and ensuring airtightness during the concrete pouring process.

[0032] The base serves as the supporting foundation for the entire mold and is typically made of high-strength, corrosion-resistant materials, such as premium steel or special alloys. Its design must ensure sufficient load-bearing capacity and stability to support the weight of the entire mold and the RPC concrete during the pouring process. The base surface may undergo special treatments, such as sandblasting or anti-rust coatings, to improve wear resistance and extend its service life.

[0033] The base plate is the bottom structure of the outer formwork assembly and is directly fixed to the base. It is also made of high-strength materials with a smooth and flat surface to ensure uniform distribution and good molding of the RPC concrete on the base plate.

[0034] The side panels are designed to be movable and connected to the base plate via a hinge mechanism. Sealing strips or rubber gaskets are installed on the inner side of the side panels to reduce concrete leakage during pouring. Connection holes or slots are provided at both ends of the side panels for secure connection with the cover plate assembly.

[0035] like Figures 1 to 4 As shown, in this embodiment, a threaded adjusting rod 10 is provided between the side plate 22 and the base 1. A first hinge portion 221 is provided on the side plate 22 to hinge one end of the threaded adjusting rod 10, and a second hinge portion 11 is provided on one end of the base 1 to hinge the other end of the threaded adjusting rod 10.

[0036] like Figures 1 to 4 As shown, in this embodiment, a bending protrusion 222 is formed at the lower end of the side plate 22, a third hinge portion 223 is provided on the bending protrusion 222, and a fourth hinge portion 12 that hinges the third hinge portion 223 is provided on the base 1.

[0037] like Figure 1 and Figure 5 As shown, in this embodiment, the inner mold frame 31 includes a first support plate 311 and a second support plate 312 opposite to each other, and a threaded support rod 33 is attached between the first support plate 311 and the second support plate 312 to support the inner mold and adjust its internal space size.

[0038] like Figure 2, Figures 6 to 9 As shown, in this embodiment, the cover plate assembly 23 includes a female end cover plate 231 and a male end cover plate 232 respectively disposed at both ends of the bottom plate 21 and the side plate 22. A female end protrusion 2311 is provided on the female end cover plate 231, and a male end groove 2321 is provided on the male end cover plate 232.

[0039] like Figure 1 , Figure 6 and Figure 8 As shown, in this embodiment, a first fixing hole 201 for connecting the cover plate assembly 23 is provided at both ends of the base plate 21, a second fixing hole 202 corresponding to the first fixing hole 201 is provided on the female end cover plate 231, and a third fixing hole 203 corresponding to the first fixing hole 201 is provided on the male end cover plate 232. The base plate 21 and the cover plate assembly 23 are detachably fixedly connected by the first fastener.

[0040] like Figure 1 , Figure 6 and Figure 8 As shown, in this embodiment, a fourth fixing hole 204 for connecting the cover plate assembly 23 is provided at both ends of the side plate 22, a fifth fixing hole 205 corresponding to the fourth fixing hole 204 is provided on the female end cover plate 231, and a sixth fixing hole 206 corresponding to the fourth fixing hole 204 is provided on the male end cover plate 232. The side plate 22 and the cover plate assembly 23 are detachably fixedly connected by the second fastener.

[0041] like Figure 1 , Figure 6 and Figure 8 As shown, in this embodiment, a seventh fixing hole 301 for connecting the cover plate assembly 23 is provided at both ends of the inner mold frame 31, an eighth fixing hole 207 corresponding to the seventh fixing hole 301 is provided on the female end cover plate 231, and a ninth fixing hole 208 corresponding to the seventh fixing hole 301 is provided on the male end cover plate 232. The inner mold frame 31 and the cover plate assembly 23 are detachably fixedly connected by a third fastener.

[0042] Installation sequence: First, adjust the threaded adjusting rod to make the side plate vertical, install the female end cover plate and lock the fasteners, then tie the required steel bars inside the RPC box culvert and adjust the threaded support rod to the design size. Then, use a forklift to transfer the inner mold assembly onto the outer mold assembly, and finally install the male end cover plate and lock the fasteners.

[0043] The manufacturing mold for RPC reinforced box culverts provided by this utility model has many applications, including but not limited to the following:

[0044] RPC reinforced box culverts are well-suited for use in infrastructure construction projects such as drainage, cable trenches, and tunnel lining due to their high strength, high durability, and good impermeability. This mold can be used for the mass production of box culvert components that meet these requirements.

[0045] In water conservancy projects, such as dikes, canals, and reservoirs, RPC reinforced box culverts can be used to construct stable seepage-proof structures, improving the overall safety and durability of the project. The mold can meet the high precision and high quality requirements of these projects for box culvert components.

[0046] With the continuous development of urban underground space, RPC reinforced box culverts are being used more and more widely in the construction of urban underground integrated pipe corridors. This mold can be used to produce box culvert components of various specifications and sizes to meet the needs of different pipeline layouts inside the pipe corridor.

[0047] In precast component manufacturing plants, this mold enables the mass and standardized production of RPC reinforced box culverts, improving production efficiency, reducing production costs, and meeting market demand for high-quality precast components.

Claims

1. A manufacturing mold for RPC reinforced concrete box culverts, characterized in that, include: A base (1) is provided on the base (1) and an outer mold assembly (20) is provided on the base (1). The outer mold assembly (20) includes a base plate (21) fixedly connected to the base (1), two side plates (22) that movably abut against the opposite ends of the base plate (21), and a cover plate assembly (23) detachably connected to the ends of the base plate (21) and the side plates (22). The outer mold assembly (20) forms a molding cavity (24). The inner mold assembly (30) includes an inner mold frame (31) and an inner connecting plate (32) detachably connected to the inner mold frame (31). A threaded support rod (33) is provided in the inner mold frame (31). The inner mold assembly is disposed in the molding cavity (24) and is detachably connected to the cover plate assembly (23).

2. The manufacturing mold for RPC reinforced box culverts according to claim 1, characterized in that, A threaded adjusting rod (10) is provided between the side plate (22) and the base (1). A first hinge part (221) is provided on the side plate (22) to hinge one end of the threaded adjusting rod (10), and a second hinge part (11) is provided at one end of the base (1) to hinge the other end of the threaded adjusting rod (10).

3. The manufacturing mold for RPC reinforced box culverts according to claim 2, characterized in that, A bent protrusion (222) is formed at the lower end of the side plate (22), a third hinge part (223) is provided on the bent protrusion (222), and a fourth hinge part (12) is provided on the base (1) to hinge the third hinge part (223).

4. The manufacturing mold for RPC reinforced box culverts according to claim 3, characterized in that, The inner mold frame (31) includes a first support plate (311) and a second support plate (312) opposite to each other, and the threaded support rod (33) is attached between the first support plate (311) and the second support plate (312).

5. The manufacturing mold for RPC reinforced box culverts according to claim 4, characterized in that, The cover plate assembly (23) includes a female end cover plate (231) and a male end cover plate (232) respectively disposed at both ends of the bottom plate (21) and the side plate (22). A female end protrusion (2311) is provided on the female end cover plate (231), and a male end groove (2321) is provided on the male end cover plate (232).

6. The manufacturing mold for RPC reinforced concrete box culverts according to claim 5, characterized in that, Both ends of the base plate (21) are provided with a first fixing hole (201) for connecting the cover plate assembly (23). The female end cover plate (231) is provided with a second fixing hole (202) corresponding to the first fixing hole (201). The male end cover plate (232) is provided with a third fixing hole (203) corresponding to the first fixing hole (201). The base plate (21) and the cover plate assembly (23) are detachably fixedly connected by a first fastener.

7. The manufacturing mold for RPC reinforced box culverts according to claim 6, characterized in that, Both ends of the side plate (22) are provided with a fourth fixing hole (204) for connecting the cover plate assembly (23). The female end cover plate (231) is provided with a fifth fixing hole (205) corresponding to the fourth fixing hole (204). The male end cover plate (232) is provided with a sixth fixing hole (206) corresponding to the fourth fixing hole (204). The side plate (22) and the cover plate assembly (23) are detachably fixedly connected by a second fastener.

8. The manufacturing mold for RPC reinforced box culverts according to claim 7, characterized in that, The inner mold frame (31) is provided with a seventh fixing hole (301) for connecting the cover plate assembly (23) at both ends. The female end cover plate (231) is provided with an eighth fixing hole (207) corresponding to the seventh fixing hole (301). The male end cover plate (232) is provided with a ninth fixing hole (208) corresponding to the seventh fixing hole (301). The inner mold frame (31) and the cover plate assembly (23) are detachably fixedly connected by a third fastener.

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