A pouring system suitable for a drainage ditch
By adopting a combination design of outer formwork, inner formwork, and sliding hopper in the construction of drainage ditches, the problems of complex formwork installation, difficult material feeding, and material waste in traditional construction are solved, realizing rapid and economical drainage ditch pouring and improving waterproof performance and overall integrity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
- Filing Date
- 2025-06-25
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional drainage ditch construction involves long formwork installation and dismantling times, limited operating space, difficulties in material handling, easy contamination and waste of concrete, and high costs.
Two opposing outer and inner formworks are used and fixed by formwork fixing frames. Combined with a sliding pouring hopper, one-time pouring is achieved, reducing the use of tie bolts and simplifying the construction process.
It improved construction speed, reduced labor intensity and material waste, enhanced waterproofing performance, reduced costs, and ensured the integrity and waterproofing effect of the drainage ditch.
Smart Images

Figure CN224591550U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting system technology, specifically a casting system suitable for drainage ditches. Background Technology
[0002] In the construction of cast-in-place concrete drainage ditches for ancillary projects, traditional cast-in-place concrete drainage ditches generally use steel pipe components with wooden formwork, requiring on-site formwork erection. Formwork installation and dismantling are time-consuming and require a large workforce. Some drainage ditches are located adjacent to roads, lacking the conditions for large-scale foundation pit excavation, resulting in limited operating space and difficulties for workers in installing and dismantling formwork. Because the drainage ditch walls are thin-walled structures with small concrete discharge openings, when using concrete mixer trucks with their own hoppers for discharge, concrete easily spills onto the formwork and outside the structure, causing formwork contamination and concrete waste. Cleaning the concrete from the formwork before the next pour also wastes time and labor. While using custom-made steel formwork slightly increases installation efficiency compared to wooden formwork, it requires significant investment in formwork procurement. Utility Model Content
[0003] In view of the above-mentioned prior art, this utility model proposes a pouring system suitable for drainage ditches, which can accelerate the construction speed of drainage ditches, greatly reduce the workload of workers in the concrete formwork of drainage ditches, facilitate concrete placement during concrete pouring, and reduce the waste of concrete spillage and formwork contamination during pouring. At the same time, this pouring system adopts one-time pouring, eliminating the need to pour the drainage ditch base slab first and then the drainage ditch wall, reducing the amount of roughening work at the concrete base slab and wall, while ensuring the integrity of the drainage ditch and reducing the risk of water seepage in the later stage.
[0004] This utility model provides a pouring system suitable for drainage ditches, including two oppositely arranged outer templates, and two oppositely arranged inner templates arranged inside the outer templates. The outer templates and inner templates are fixed by several template fixing frames, which are arranged along the length direction of the outer templates and inner templates. A stretcher beam is provided between the outer templates and inner templates, and a slidable pouring hopper is provided on the stretcher beam.
[0005] Preferably, the template fixing frame includes a crossbeam, and the lower end of the crossbeam is provided with two outer template fixing rods and two inner template fixing rods. The outer template fixing rods are used to fix the outer template, and the inner template fixing rods are used to fix the inner template. The bottoms of the two inner template fixing rods are connected by a connecting rod.
[0006] Preferably, the outer template includes an outer bamboo plywood, with several outer timber squares provided on one side of the outer bamboo plywood. Each of the outer timber squares is provided with a first bolt hole. A first rotating plate is rotatably provided on the outer template fixing rod, and a second bolt hole is provided on the first rotating plate. The first bolt hole and the second bolt hole are connected by a first fixing bolt. The inner template includes an inner bamboo plywood, with several inner timber squares provided on one side of the inner bamboo plywood. Each of the inner timber squares is provided with a third bolt hole. A second rotating plate is rotatably provided on the inner template fixing rod, and a fourth bolt hole is provided on the second rotating plate. The third bolt hole and the fourth bolt hole are connected by a second fixing bolt.
[0007] Preferably, a cover plate slot template is provided on the top of the side of the inner bamboo plywood opposite to the inner wood square.
[0008] Preferably, both ends of the crossbeam are provided with ground anchors.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0010] (1) Improved overall waterproofing effect: The one-time casting method eliminates the need for tie bolts during formwork reinforcement, thus greatly improving the waterproofing performance of the drainage ditch concrete. Compared with traditional construction methods, this reduces the need for workers to seal tie bolt holes and roughen the joints between the base plate and the wall, significantly increasing the casting speed.
[0011] (2) Convenient pouring: Traditional pouring schemes generally use the pump truck discharge port to directly pour materials. Due to the thin wall of the drainage ditch, the discharge port is small and the material is difficult to pour. However, the discharge port of this utility model solves the problem of difficult material pouring, making the material pouring faster and more convenient. It also solves the problem of concrete spillage during the pouring process, which contaminates the formwork and wastes materials.
[0012] (3) Greatly reduces labor intensity: The pouring system is easy to install and disassemble. Compared with traditional construction methods, it greatly saves the time of template reinforcement and dismantling during template installation. Workers can also operate it conveniently in a narrow working space.
[0013] (4) Cost input: The modified casting system adopts a modular design, which is easy to install and dismantle and can be reused. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the pouring system for drainage ditches in an embodiment of the present invention.
[0015] Figure 2 This is a schematic diagram of the template fixing frame in an embodiment of this utility model.
[0016] Figure 3This is a schematic diagram of the structure of the outer template in an embodiment of this utility model.
[0017] Figure 4 This is a schematic diagram of the structure of the inner template in an embodiment of this utility model.
[0018] Figure 5 This is a schematic diagram of the structure of the first or second rotating plate in an embodiment of this utility model.
[0019] Figure 6 This is a schematic diagram of the structure of the casting hopper in an embodiment of this utility model.
[0020] In the diagram, 1. Outer formwork; 2. Inner formwork; 3. Formwork fixing frame; 4. Stretcher beam; 5. Pouring hopper; 6. Crossbeam; 7. Outer formwork fixing rod; 8. Inner formwork fixing rod; 9. Connecting rod; 10. Outer bamboo plywood; 11. Outer timber; 12. First bolt hole; 13. First rotating plate; 14. Second bolt hole; 15. Inner bamboo plywood; 16. Inner timber; 17. Third bolt hole; 18. Second rotating plate; 19. Fourth bolt hole; 20. Cover plate slot formwork; 21. Ground anchor buckle; 22. Ground anchor system. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] Example: Figures 1-6 The illustrated pouring system for drainage ditches includes two oppositely arranged outer formwork 1s, and two oppositely arranged inner formwork 2s arranged on the inner side of the outer formwork 1s. The outer formwork 1s and inner formwork 2s are fixed by several formwork fixing frames 3s, which are arranged along the length of the outer formwork 1s and inner formwork 2s. A stretcher beam 4 is provided between adjacent outer formwork 1s and inner formwork 2s, and a sliding pouring hopper 5 is provided on the stretcher beam 4.
[0023] Furthermore, the template fixing frame 3 includes a crossbeam 6, and the lower end of the crossbeam 6 is provided with two outer template fixing rods 7 and two inner template fixing rods 8. The outer template fixing rods 7 are used to fix the outer template 1, and the inner template fixing rods 8 are used to fix the inner template 2. The bottoms of the two inner template fixing rods 8 are connected by a connecting rod 9.
[0024] Furthermore, the outer template 1 includes an outer bamboo plywood 10, with four outer timber squares 11 on one side of the outer bamboo plywood 10. A first bolt hole 12 is provided through the second outer timber square 11 along its vertical direction. A first rotating plate 13 is rotatably provided on the outer template fixing rod 7. A second bolt hole 14 is provided on the first rotating plate 13. The first bolt hole 12 and the second bolt hole 14 are connected by a first fixing bolt. The inner template 2 includes an inner bamboo plywood 15, with three inner timber squares 16 on one side of the inner bamboo plywood 15. A third bolt hole 17 is provided through the second inner timber square along its vertical direction. A second rotating plate 18 is rotatably provided on the inner template fixing rod 8. A fourth bolt hole 19 is provided on the second rotating plate 18. The third bolt hole 17 and the fourth bolt hole 18 are connected by a second fixing bolt.
[0025] Furthermore, a cover plate slot template 20 is provided on the top of the side opposite to the inner bamboo plywood 15 and the inner timber 16, and ground anchor buckles 21 are provided at both ends of the crossbeam 6.
[0026] In practical application, the pouring system of this embodiment involves excavating a foundation pit according to the plan. After the pit passes inspection, the foundation concrete is poured according to the design. A section of drainage ditch formwork is placed on the foundation layer in the pit, and the inner and outer formwork is temporarily fixed in two places using formwork fixing frames 3 according to the design drawings. After verifying the formwork positions and confirming that they are correct, the remaining formwork fixing frames 3 are installed in place according to the design, and the ground anchor system 22 is installed using ground anchor buckles 21 for reinforcement. The above steps are repeated until the required pouring length is completed, and then the pouring hopper 5 is placed for pouring. After pouring, when the concrete strength meets the requirements for demolding, the ground anchor system 22 is removed first, then the formwork fixing frames 3 are removed, and then the inner and outer formwork is removed. Geotextile is then covered and water is sprayed for curing. The next section of the drainage ditch is constructed according to the above steps.
[0027] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent solutions made using the contents of this utility model specification, whether directly or indirectly applied to other related technical fields, are also within the patent protection scope of this utility model.
Claims
1. A pouring system suitable for a drainage ditch, characterized in that, It includes two oppositely arranged outer templates, and two oppositely arranged inner templates are provided on the inner side of the outer templates. The outer templates and inner templates are fixed by several template fixing frames, which are arranged along the length of the outer templates and inner templates. A stretcher beam is provided between the outer templates and inner templates, and a sliding pouring hopper is provided on the stretcher beam.
2. The formwork system for a drainage ditch according to claim 1, wherein The template fixing frame includes a crossbeam. The lower end of the crossbeam is provided with two outer template fixing rods and two inner template fixing rods. The outer template fixing rods are used to fix the outer template, and the inner template fixing rods are used to fix the inner template. The bottoms of the two inner template fixing rods are connected by a connecting rod.
3. The formwork system for a drainage ditch according to claim 2, wherein, The outer template includes an outer bamboo plywood, with several outer timber squares provided on one side of the outer bamboo plywood. Each of the outer timber squares has a first bolt hole. A first rotating plate is rotatably mounted on the outer template fixing rod, and a second bolt hole is provided on the first rotating plate. The first bolt hole and the second bolt hole are connected by a first fixing bolt. The inner template includes an inner bamboo plywood, with several inner timber squares provided on one side of the inner bamboo plywood. Each of the inner timber squares has a third bolt hole. A second rotating plate is rotatably mounted on the inner template fixing rod, and a fourth bolt hole is provided on the second rotating plate. The third bolt hole and the fourth bolt hole are connected by a second fixing bolt.
4. The pouring system for a drain channel according to claim 3, wherein, The top of the inner bamboo plywood, opposite to the inner timber, is provided with a cover plate slot template.
5. A pouring system for a drainage ditch according to any one of claims 2-4, characterized in that, Both ends of the crossbeam are equipped with ground anchors.