Ditch cover for hydraulic engineering
By introducing drainage channels, interception devices, and internal steel pipe structures into the ditch covers of water conservancy projects, the balance between garbage interception and emergency drainage has been solved, improving the cleaning efficiency and structural stability of the ditch covers.
Patent Information
- Application Number
- CN202522468134.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Existing water conservancy project ditch covers are difficult to balance between garbage interception and emergency drainage. Traditional designs have problems such as complex interception structures that are difficult to clean or inability to provide emergency drainage.
A ditch cover with a drainage trough, an interception device, and an inner steel pipe was designed. The drainage trough is connected to the interception device to intercept garbage, the inner steel pipe enhances the structural strength, and the interception device is detachable and equipped with an overflow trough to ensure emergency drainage.
It achieves efficient waste interception, reduces the risk of blockage, improves cleaning efficiency, ensures continuous emergency drainage, and enhances the stability and safety of the cover structure.
Smart Images

Figure CN224678840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a ditch cover plate for water conservancy projects. Background Technology
[0002] In water conservancy projects and municipal drainage systems, ditch covers, as core infrastructure components, undertake multiple functions such as drainage diversion, safety protection, and road surface load-bearing. Their performance directly affects the stability of the drainage system and the safety of the surrounding environment. Currently, most ditch covers on the market are mainly formed by concrete casting. Although they have certain structural stability and cost advantages, many problems that urgently need to be solved have gradually emerged in practical applications.
[0003] First, the balance between drainage and waste interception is a significant challenge. In high-traffic areas with concentrated waste generation (such as commercial districts, residential areas, and areas around schools), ditch covers easily trap large amounts of solid waste, such as pebbles, plastic waste, and fallen leaves, during drainage. Traditional covers either lack a dedicated interception structure, allowing waste to enter the ditch directly, which can easily cause blockages over time, increasing dredging and maintenance costs and even leading to secondary problems such as poor drainage and road flooding; or they use a fixed interception design where the interception components are integrally molded with the cover body, making disassembly and cleaning difficult and preventing emergency drainage when the interception net becomes clogged, further exacerbating drainage bottlenecks.
[0004] Therefore, there is an urgent need in this field for a ditch cover for water conservancy projects that can intercept garbage without affecting emergency drainage. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a ditch cover for water conservancy projects that can intercept garbage and does not affect emergency drainage.
[0006] To solve the above problems, the present invention adopts the following technical solution: A ditch cover for water conservancy projects includes a cover body, a plurality of drainage channels are provided on the top of the cover body, grooves are provided on both sides of the cover body, two connecting rods are arranged in parallel inside the cover body, the two ends of the connecting rods extend to the outside of the grooves on both sides, and an interception device corresponding to the drainage channels is installed below the cover body, the interception device being suspended by the connecting rods.
[0007] Preferably, an inner steel pipe is cast inside the cover plate body, and multiple inner steel pipes are arranged in parallel, with both ends of the inner steel pipes being open.
[0008] Preferably, the connecting rod passes through the inner steel tube.
[0009] Preferably, anti-slip protrusions are provided at the upper end of the inner steel pipe, and the upper end of the anti-slip protrusions extends to the outside of the cover plate body.
[0010] Preferably, the interception device includes an interception groove, with a slot provided at the bottom of the interception groove, the slot extending to the two side walls of the interception groove, an interception net fixed in the slot, and a screw fitting between the interception groove and the connecting rod. The drain trough corresponds to the interception groove, so that water flowing down from the drain trough falls into the interception groove and is discharged into the ditch after being intercepted by the interception net.
[0011] Preferably, overflow troughs are provided on both sides of the interception trough, and the height of the overflow troughs is higher than the height of the interception net, so that when the interception net is blocked, the water level rises in the interception trough and flows out from the overflow troughs.
[0012] The beneficial effects of this utility model are: This solution incorporates an interception device beneath the cover plate, corresponding to the drainage trough. This allows over 80% of the drainage to flow into the interception device via the drainage trough. The interception net precisely intercepts solid debris such as stones and plastic waste, reducing the total amount of waste entering the ditch at its source and significantly lowering the likelihood of blockage. Furthermore, the interception device features a detachable design, secured with screws and connecting rods. It can be quickly disassembled for cleaning during regular inspections, greatly improving maintenance efficiency and significantly reducing manual dredging costs compared to traditional integrated interception structures. In addition, the overflow channels on both sides of the interception trough, combined with the gaps and grooves between the cover plate and the overflow channels, create multiple emergency drainage channels. Even when the interception net is blocked, effective drainage can still be achieved through the overflow channels and natural gaps, preventing road flooding and ensuring the continuity of the drainage system.
[0013] Multiple inner steel pipes are arranged in parallel inside the cover plate, forming a composite load-bearing structure in conjunction with concrete pouring. The through-end design of the inner steel pipes allows concrete to be poured into the pipes, achieving a tight bond between the steel and concrete, significantly improving the cover plate's impact resistance and pressure bearing capacity. When a vehicle accidentally runs over it, the synergistic effect of the inner steel pipes and concrete effectively prevents the cover plate from breaking, preventing accidents such as tires getting stuck in ditches. Simultaneously, connecting rods pass through the inner steel pipes, linking multiple steel pipes together to form an integrated internal skeleton, further enhancing structural stability. Anti-slip protrusions at the upper end of the inner steel pipes extend to the outside of the cover plate, bearing the main wear and tear from vehicle traffic and effectively increasing the friction between the wheel and the cover plate, especially in wet conditions, providing significant anti-slip protection and improving pedestrian and vehicle safety. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of adjacent combinations of this device; Figure 3 This is a three-dimensional view of the cover plate body; Figure 4 This is a schematic diagram showing the fit between the inner steel pipe and the connecting rod. Detailed Implementation
[0016] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0017] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0018] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0019] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] See Figures 1 to 4 The illustrated ditch cover for water conservancy projects includes a cover body 1, which is cast from concrete. Multiple drainage channels 11 are provided on the top of the cover body 1, pre-formed using molds. Grooves 12 are provided on both sides of the cover body 1, also pre-formed using molds. Two connecting rods 13 are arranged parallel to each other inside the cover body 1, directly cast into the cover body 1. Both ends of the connecting rods 13 extend to the outside of the grooves 12 on both sides. An intercepting device 2 corresponding to the drainage channels 11 is installed below the cover body 1, suspended by the connecting rods 13.
[0022] In the above technical solution, each cover plate body 1 is equipped with an interception device 2. During daily drainage, more than 80% of the water is discharged through the drain trough 11, and the remaining water is discharged through the gaps created when adjacent cover plate bodies 1 are combined, as well as the slots formed by the combination of adjacent grooves 12. The garbage (large stones, plastic waste, etc.) contained in the water discharged through the drain trough 11 is intercepted by the interception device 2, thereby protecting the ditch and reducing the chance of the ditch being blocked.
[0023] When the interception device 2 is blocked, water can be discharged through the slot formed by the combination of adjacent grooves 12.
[0024] The main installation locations for these ditch covers are key areas with high pedestrian traffic and large amounts of garbage.
[0025] For areas where no garbage is generated, simply remove the interception device 2 and maintain normal drainage.
[0026] See Figure 4 As shown, an inner steel pipe 3 is cast inside the cover plate body 1. Multiple inner steel pipes 3 are arranged in parallel, and both ends of the inner steel pipe 3 are connected.
[0027] The function of the inner steel pipe 3 is to increase the structural strength of the cover plate body 1. Considering that some drivers may accidentally drive onto the drainage ditch, the strength of the inner steel pipe 3 will prevent the cover plate body 1 from being crushed and break, thus avoiding the vehicle tires from falling into the ditch due to the direct breakage of the cover plate body 1, and playing a safety protection role.
[0028] The inner steel pipe 3 is made of galvanized steel pipe with a wall thickness of about 4mm. Both ends of the inner steel pipe 3 are through, so that concrete can be poured into the interior of the inner steel pipe 3 when the cover plate body 1 is poured.
[0029] The inner steel pipe 3 is a square tube.
[0030] During installation, the length of the square tube 3 is greater than the inner width of the ditch, so that after the cover plate body 1 is laid, both ends of the square tube 3 are supported on the stepped surfaces on both sides of the top of the ditch.
[0031] See Figure 4 As shown, the connecting rod 13 passes through the inner steel pipe 3.
[0032] In this technical solution, multiple inner steel pipes 3 are connected in series by connecting rod 13, and then combined with poured concrete, so that connecting rod 13 and inner steel pipes 3 form an inner skeleton structure with high structural strength, thereby increasing the pressure bearing capacity of cover plate body 1.
[0033] See Figure 4 As shown, anti-slip protrusions 31 are provided at the upper end of the inner steel pipe 3, and the upper end of the anti-slip protrusions 31 extends to the outside of the cover plate body 1.
[0034] In the above technical solution, the design of anti-slip protrusions 31 is adopted. During the casting process, the anti-slip protrusions 31 are exposed on the outside of the cover plate body 1, bearing the wear when the vehicle rolls over them, and at the same time playing an anti-slip role for the wheels.
[0035] See Figure 1 and Figure 3 As shown, the interception device 2 includes an interception groove 21. A slot is provided at the bottom of the interception groove 21, and the slot extends to the two side walls of the interception groove 21. An interception net 22 is fixed in the slot. A screw 23 is fitted between the interception groove 21 and the connecting rod 13. The drain trough 11 corresponds to the interception groove 21, so that the water flowing down from the drain trough 11 falls into the interception groove 21 and is discharged into the ditch after being intercepted by the interception net 22.
[0036] In the above technical solution, the interception channel 21 is made of stainless steel, and the interception net 22 is made of stainless steel.
[0037] In the above technical solution, the intercepting groove 21 is detachably fixed with screws 23, which facilitates disassembly and cleaning of the internally blocked intercepting groove 21 during regular inspections.
[0038] See Figure 1 As shown, overflow troughs 24 are provided on both sides of the interception trough 21. The height of the overflow trough 24 is higher than the height of the interception net 22, so that when the interception net is blocked, the water level rises in the interception trough and flows out from the overflow trough.
[0039] The above technical solution is mainly for emergency drainage when the penetration efficiency of the interception net 22 is insufficient, so as to avoid the problem of road water accumulation caused by insufficient drainage efficiency.
[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0042] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0044] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A ditch cover for water conservancy projects, characterized in that, The cover plate includes a cover body, the top of which is provided with multiple drainage channels, and grooves are provided on both sides of the cover body. Two connecting rods are arranged in parallel inside the cover body, with both ends of the connecting rods extending to the outside of the grooves on both sides. An interception device corresponding to the drainage channels is installed below the cover body, and the interception device is suspended by the connecting rods.
2. The ditch cover for water conservancy projects according to claim 1, characterized in that: An inner steel pipe is cast inside the cover plate body. Multiple inner steel pipes are arranged in parallel, and both ends of the inner steel pipes are connected.
3. The ditch cover for water conservancy projects according to claim 2, characterized in that: The connecting rod passes through the inner steel tube.
4. The ditch cover for water conservancy projects according to claim 3, characterized in that: Anti-slip protrusions are provided at the upper end of the inner steel pipe, and the upper end of the anti-slip protrusions extends to the outside of the cover plate body.
5. The ditch cover for water conservancy projects according to claim 1, characterized in that: The interception device includes an interception groove with a slot at the bottom extending to both sides of the interception groove. An interception net is fixed in the slot. A screw is fitted between the interception groove and the connecting rod. The drain trough corresponds to the interception groove so that water flowing down from the drain trough falls into the interception groove and is discharged into the ditch after being intercepted by the interception net.
6. The ditch cover for water conservancy projects according to claim 5, characterized in that: Overflow channels are provided on both sides of the interception channel. The height of the overflow channels is higher than the height of the interception net, so that when the interception net is blocked, the water level rises in the interception channel and flows out from the overflow channels.