Prefabricating mold for reinforced concrete drainage pipe
By designing prefabricated molds for reinforced concrete drainage pipes that can be assembled, the problem of poor adaptability of traditional molds has been solved, achieving production adaptability for drainage pipes of different lengths and the sealing performance of the molds, thereby improving the structural strength and service life of the inner molds.
Patent Information
- Application Number
- CN202520094158.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Traditional precast molds for reinforced concrete drainage pipes are difficult to adapt to the needs of drainage pipes of different lengths, resulting in poor adaptability and insufficient sealing.
An assembly-type precast mold for reinforced concrete drainage pipes was designed. The mold is assembled and sealed through components such as reinforcing rings, assembly blocks, sealing grooves, and interlocking structures. The inner mold has improved its resistance to deformation through the support structure of reinforcing plates and mounting bases.
It achieves production adaptability for drainage pipes of different lengths, improves the sealing of the mold and the structural strength of the inner mold, and extends the service life of the inner mold.
Smart Images

Figure CN223763447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabrication technology for reinforced concrete drainage pipes, specifically a prefabrication mold for reinforced concrete drainage pipes. Background Technology
[0002] Drainage pipes are important components in drainage systems, mainly used for discharging sewage, rainwater, and wastewater. Reinforced concrete drainage pipes are made of reinforced concrete. Precast molds are used to produce precast components. By filling the assembled precast mold with steel bars and concrete, it is allowed to solidify and form a drainage pipe.
[0003] Traditional precast molds for reinforced concrete drainage pipes have limitations. When the required pipe length varies, the mold dimensions are difficult to adjust, necessitating multiple molds of different sizes for different pipe lengths, resulting in poor adaptability. Therefore, we propose a precast mold for reinforced concrete drainage pipes to address these issues. Utility Model Content
[0004] The purpose of this utility model is to provide a precast mold for reinforced concrete drainage pipes to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a precast mold for reinforced concrete drainage pipes, comprising an outer mold, wherein reinforcing rings are uniformly fixed to the outer side wall of the outer mold, assembly blocks are provided at both the upper and lower ends of the outer mold, and external fixing bolts are installed at equal intervals inside the assembly blocks, an inner mold is provided inside the outer mold, and connecting blocks are fixed to both the upper and lower ends inside the inner mold, and internal fixing bolts are installed inside the connecting blocks, circular rings are fixed to both the left and right sides of the outer mold, assembly blocks are fixed to the outer side wall of the right circular ring of the outer mold, assembly holes are provided inside the assembly blocks, and a fixing ring is hinged to the right side of the outer side wall of the outer mold, a shaft is movably provided inside the fixing ring, mounting blocks are fixed to both sides of the shaft, and one end of the mounting block is fixed to the outer side wall of the outer mold, a fixing block is fixed to the outer side wall of the left circular ring of the outer mold, a locking rod is installed on one side of the fixing block, and a rubber locking block is fixed to one end of the locking rod.
[0006] As a further technical solution of this utility model, the fixing ring is provided in four sets, and the four sets of fixing rings form an engaging structure between the rubber block and the rod.
[0007] As a further technical solution of this utility model, the clamping rod is provided in four sets, and the four sets of clamping rods are distributed in a ring on the outer side wall of the outer mold.
[0008] As a further technical solution of this utility model, a first sealing groove is provided at both the upper and lower ends of the left side interior of the outer mold, a first sealing block is fixed at both the upper and lower ends of the right side of the outer mold, a second sealing groove is provided at both the upper and lower ends of the left side interior of the inner mold, and a second sealing block is fixed at both the upper and lower ends of the right side of the inner mold.
[0009] As a further technical solution of this utility model, the first sealing groove and the first sealing block form an engaging structure, and the second sealing groove and the second sealing block form an engaging structure.
[0010] As a further technical solution of this utility model, both sides of the inner wall of the inner mold are fixed with mounting seats, and the interior of each mounting seat is provided with a mounting groove. A second reinforcing plate is movably arranged inside each mounting groove. A slot is provided in the middle of the interior of each second reinforcing plate, and a first reinforcing plate is installed inside each slot.
[0011] As a further technical solution of this utility model, the mounting base is provided in two sets, and the two sets of mounting bases and the second reinforcing plate form a sliding structure.
[0012] As a further technical solution of this utility model, the cross-section of the first reinforcing plate is smaller than the cross-section of the slot, and the first reinforcing plate and the second reinforcing plate form a cross-shaped interlocking structure through the slot.
[0013] Compared with the prior art, the beneficial effects of this utility model are: the precast mold for reinforced concrete drainage pipes can not only be assembled together to produce drainage pipes of different lengths, but also greatly increase the sealing performance when the precast molds are assembled together, and also achieve the support and reinforcement of the inner mold, making the inner mold more resistant to deformation.
[0014] By incorporating components such as clamping rods, fixing blocks, fixing rings, and assembly blocks, this prefabricated drainage pipe mold can connect multiple outer molds together to form a whole when different lengths of drainage pipe are required. This allows the prefabricated mold to be spliced and used, making it easy to assemble into different lengths of drainage pipes and greatly increasing its adaptability.
[0015] By setting components such as the first sealing groove, the first sealing block, the second sealing block, and the second sealing groove, the overall sealing performance of the assembled outer mold and the assembled inner mold is greatly increased, so that concrete is less likely to overflow when the outer mold and the inner mold are poured, resulting in better performance.
[0016] When using this precast drainage pipe mold, components such as a first reinforcing plate, a mounting base, and a second reinforcing plate are installed inside the inner mold. This allows the second reinforcing plate to be spliced together with the first reinforcing plate and snapped into place inside the inner mold, thus supporting the inner mold and greatly increasing its structural strength. This makes it less prone to deformation and damage during use, extending the service life of the inner mold. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a partial cross-sectional structure of the present invention.
[0018] Figure 2 This is a side view of the structure of this utility model;
[0019] Figure 3 For the present utility model Figure 2 A magnified view of the structure at point A in the middle;
[0020] Figure 4 This is a side view of the second reinforcing plate of this utility model.
[0021] In the diagram: 1. Outer mold; 2. Inner mold; 3. Inner fixing bolt; 4. Clamping rod; 5. First reinforcing plate; 6. Fixing block; 7. Fixing ring; 8. First sealing groove; 9. First sealing block; 10. Second sealing block; 11. Second sealing groove; 12. Connecting block; 13. Outer fixing bolt; 14. Mounting block; 15. Shaft; 16. Assembly block; 17. Assembly hole; 18. Rubber clamping block; 19. Reinforcing ring; 20. Circular ring; 21. Assembly block; 22. Mounting seat; 23. Mounting groove; 24. Second reinforcing plate; 25. Clamping groove. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4This utility model provides an embodiment: a precast mold for reinforced concrete drainage pipes, including an outer mold 1. Reinforcing rings 19 are uniformly fixed to the outer wall of the outer mold 1. Assembly blocks 21 are provided at both the upper and lower ends of the outer mold 1, and external fixing bolts 13 are installed at equal intervals inside the assembly blocks 21. An inner mold 2 is provided inside the outer mold 1, and connecting blocks 12 are fixed to both the upper and lower ends inside the inner mold 2. Internal fixing bolts 3 are installed inside the connecting blocks 12. Circular rings 20 are fixed to both the left and right sides of the outer mold 1. Assembly blocks 16 are fixed to the outer wall of the right circular ring 20 of the outer mold 1. Assembly holes 17 are provided inside the assembly blocks 16. On the right side, fixed retaining rings 7 are hinged and installed. A shaft 15 is movably arranged inside the fixed retaining ring 7. Mounting blocks 14 are fixed on both sides of the shaft 15, and one end of the mounting block 14 is fixed to the outer wall of the outer mold 1. Fixed blocks 6 are fixed on the outer wall of the left side ring 20 of the outer mold 1, and a locking rod 4 is installed on one side of the fixing block 6. A rubber locking block 18 is fixed at one end of the locking rod 4. There are four sets of fixed retaining rings 7. The four sets of fixed retaining rings 7 form a locking structure with the locking rod 4 through the rubber locking block 18. There are four sets of locking rod 4. The four sets of locking rod 4 are distributed in a ring on the outer wall of the outer mold 1, which improves the stability of the splicing between the two sets of outer molds 1.
[0024] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, when multiple outer molds 1 need to be spliced together to form a whole for use, the locking rod 4 on one side of the first set of outer molds 1 is passed through the assembly hole 17 inside the assembly block 16 on one side of the second set of outer molds 1, so that the first set of outer molds 1 and the second set of outer molds 1 fit together. Then, the fixing ring 7 is flipped so that it engages with the rubber locking block 18 above the locking rod 4, thereby connecting the first set of outer molds 1 and the second set of outer molds 1 together to form a whole for use.
[0025] The outer mold 1 has a first sealing groove 8 at both the upper and lower ends of the left side interior, and a first sealing block 9 at both the upper and lower ends of the right side interior. The inner mold 2 has a second sealing groove 11 at both the upper and lower ends of the left side interior, and a second sealing block 10 at both the upper and lower ends of the right side interior. The first sealing groove 8 and the first sealing block 9 form a locking structure, and the second sealing groove 11 and the second sealing block 10 form a locking structure. The locking structure design improves the sealing performance of the assembly between the outer mold 1 and the inner mold 2.
[0026] Specifically, such as Figure 1 As shown, when the precast mold is in use, the two components of the outer mold 1 will be spliced together to form a whole, and the two components of the inner mold 2 will also be spliced together to form a whole. At this time, the first sealing groove 8 and the first sealing block 9 make the whole of the outer mold 1 more airtight, and the second sealing block 10 and the second sealing groove 11 make the whole of the inner mold 2 more airtight.
[0027] Mounting seats 22 are fixed on both sides of the inner wall of the inner mold 2. Mounting seats 22 are provided with mounting grooves 23 inside. Second reinforcing plates 24 are movably installed inside the mounting grooves 23. The middle position of the second reinforcing plates 24 is provided with slots 25, and the first reinforcing plates 5 are installed inside the slots 25. There are two sets of mounting seats 22. The two sets of mounting seats 22 and the second reinforcing plates 24 form a sliding structure. The sliding structure design facilitates the disassembly and assembly of the second reinforcing plates 24. The cross section of the first reinforcing plate 5 is smaller than the cross section of the slot 25. The first reinforcing plate 5 and the second reinforcing plate 24 form a cross-shaped interlocking structure through the slots 25 to stably support and reinforce the inner mold 2.
[0028] Specifically, such as Figure 1 and Figure 4 As shown, the first reinforcing plate 5 passes through the mounting groove 23 inside the mounting base 22 and engages inside the inner mold 2. Then, the second reinforcing plate 24 is taken out and engages inside the first reinforcing plate 5 through the slot 25, so that the second reinforcing plate 24 and the first reinforcing plate 5 together support and reinforce the structure of the inner mold 2.
[0029] Working principle: When using this utility model, the components of the precast mold are taken out. Depending on the actual length of the drain pipe to be produced, it is determined whether the precast mold needs to be spliced. If splicing is required, the clamping rod 4 on one side of the first set of outer molds 1 is passed through the assembly hole 17 inside the assembly block 16 on one side of the second set of outer molds 1, so that the first set of outer molds 1 and the second set of outer molds 1 fit together. Then, the fixing ring 7 is flipped to engage with the rubber clamping block 18 above the clamping rod 4, thus splicing the two sets of outer molds 1. Afterwards, the inner mold 2 is placed inside the outer mold 1 and its position is adjusted. The inner molds 2 are then stacked together to achieve a connection with the outer mold. 1. With the same length, the first reinforcing plate 5 is taken and inserted into the mounting groove 23 inside the mounting base 22 and engaged inside the inner mold 2. The second reinforcing plate 24 is taken and engaged inside the first reinforcing plate 5 through the slot 25. The second reinforcing plate 24 and the first reinforcing plate 5 together support and reinforce the structure of the inner mold 2. Then, steel bars are installed into the inner mold 1 and the inner mold 2 and concrete is injected and left to solidify. After solidification, the outer mold 1 is opened by turning the outer fixing bolt 13, and the inner mold 2 is moved out from the inner mold 1 by turning the inner fixing bolt 3, thereby removing the outer mold 1 and the inner mold 2 from the formed drainage pipe.
[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A precast form for reinforced concrete pipes, comprising an outer form (1), characterized in that: The outer side wall of the outer mold (1) is uniformly fixed with reinforcing rings (19), the upper and lower ends of the outer mold (1) are provided with assembly blocks (21), and the inside of the assembly block (21) is installed with outer fixed bolts (13) at equal intervals, the inside of the outer mold (1) is provided with an inner mold (2), and the upper and lower ends of the inner mold (2) are fixed with connecting blocks (12), the inside of the connecting block (12) is installed with inner fixed bolts (3), the left and right sides of the outer mold (1) are fixed with circular rings (20), the outer side wall of the right circular ring (20) of the outer mold (1) is fixed with assembly blocks (16), the inside of the assembly block (16) is provided with assembly holes (17), the right side of the outer side wall of the outer mold (1) is hingedly installed with fixed clamping rings (7), the inside of the fixed clamping ring (7) is movably provided with a shaft body (15), the left and right sides of the shaft body (15) are fixed with mounting blocks (14), and one end of the mounting block (14) is fixed with the outer side wall of the outer mold (1), the outer side wall of the left circular ring (20) of the outer mold (1) is fixed with fixed blocks (6), one side of the fixed block (6) is installed with clamping rods (4), and one end of the clamping rod (4) is fixed with rubber clamping blocks (18).
2. A reinforced concrete pipe preform mould according to claim 1, characterised in that: The fixed clamping ring (7) is provided with four groups, and the four groups of fixed clamping rings (7) form a clamping structure between the rubber clamping blocks (18) and the clamping rods (4).
3. A reinforced concrete pipe preform mold according to claim 1, characterized in that: The clamping rod (4) is provided with four groups, and the four groups of clamping rods (4) are annularly distributed on the outer side wall of the outer mold (1).
4. A reinforced concrete pipe preform mold according to claim 1, characterized in that: The upper and lower ends of the left inside of the outer mold (1) are provided with first sealing grooves (8), the upper and lower ends of the right side of the outer mold (1) are fixed with first sealing blocks (9), the upper and lower ends of the left inside of the inner mold (2) are provided with second sealing grooves (11), and the upper and lower ends of the right side of the inner mold (2) are fixed with second sealing blocks (10).
5. A reinforced concrete pipe preform mould according to claim 4, characterised in that: The first sealing groove (8) and the first sealing block (9) form a clamping structure, and the second sealing groove (11) and the second sealing block (10) form a clamping structure.
6. A reinforced concrete pipe preform mold according to claim 1, characterized in that: The inside wall of the inner mold (2) is fixed with mounting seats (22) on the left and right sides, the inside of the mounting seat (22) is provided with a mounting groove (23), the inside of the mounting groove (23) is movably provided with a second reinforcing plate (24), the inside of the second reinforcing plate (24) is provided with a clamping groove (25) at the middle position, and the inside of the clamping groove (25) is installed with a first reinforcing plate (5).
7. A reinforced concrete pipe preform mould according to claim 6, characterised in that: The mounting seat (22) is provided with two groups, and the mounting seat (22) and the second reinforcing plate (24) form a sliding structure.
8. A reinforced concrete pipe preform mould according to claim 6, characterised in that: The cross section of the first reinforcing plate (5) is smaller than the cross section of the clamping groove (25), and the first reinforcing plate (5) forms a cross clamping structure between the clamping groove (25) and the second reinforcing plate (24).