Integral bridge drainage outlet device

Abstract

This utility model relates to the technical field of bridge drainage, specifically an integrated bridge drainage outlet device, including a drainage outlet body and a grating cover. The drainage outlet body includes a square box embedded in the bridge deck pavement. An inlet is located at the top of the square box, and a drain pipe is connected to the bottom of the box. The drain pipe is inserted into a pre-embedded pipe embedded in the bridge beam, and its bottom connects to a drainage pipe on the bridge. The grating cover is placed on the top surface of the square box, flush with the top surface of the bridge deck pavement. The grating cover has multiple grating holes communicating with the inlet. The grating cover and the drainage outlet body are detachably connected by bolts. This integrated bridge drainage outlet device, with a grating cover on the top surface and the detachable connection between the grating cover and the drain pipe via bolts, solves the problem of traditional grating covers easily loosening and falling off, and also improves the overall performance of the drainage outlet.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge drainage, specifically an integrated bridge drainage outlet device. Background Technology

[0002] In bridge engineering, the proper functioning of the drainage system is crucial to the bridge's lifespan and traffic safety. Currently, bridge drainage outlets typically use cast iron or PVC pipes, located on the lower side of the bridge deck's cross slope. Drainage is collected from the bridge deck via blind drains and discharged directly under the bridge, or collected centrally via longitudinal pipes and led to the surface drainage system at the piers and abutments. This drainage outlet structure cannot automatically clear mud and dust that flow into the pipes with rainwater, leading to blockages over time. This affects bridge drainage and can even cause flooding on the bridge during rainy days, threatening traffic safety. Furthermore, traditional connections between drainage outlets and pipes are often simple splices, resulting in poor connection stability and a tendency to loosen. Additionally, the drain cover is often removable, making it easy for the cover or pipe components to detach or be lost, increasing bridge maintenance costs. Summary of the Invention

[0003] The purpose of this utility model is to address the problems existing in the prior art by providing an integrated bridge drainage outlet device. The integrated bridge drainage outlet device has a grating cover plate on its top surface. The grating cover plate and the drainage pipe are detachably connected by bolts, which can not only solve the problem of traditional grating covers being easy to loosen and fall off, but also improve the overall performance of the drainage outlet.

[0004] To achieve the objective of this utility model, the technical solution adopted is as follows: An integrated bridge drainage outlet device includes a drainage outlet body and a grating cover. The drainage outlet body comprises a square box embedded in the bridge deck pavement layer near the guardrail. An inlet is located at the top of the square box, and a drain pipe is connected to the bottom of the box. The drain pipe is inserted into a pre-embedded pipe embedded in the bridge beam, with its outer wall tightly against the inner wall of the pre-embedded pipe. Waterproof adhesive can be applied appropriately. The bottom of the drain pipe connects to a drainage pipe on the bridge. The grating cover is placed on the top surface of the square box, flush with the top surface of the bridge deck pavement. The grating cover has multiple grating holes connected to the inlet. These holes effectively prevent larger debris such as fallen leaves and plastic bags from entering the drain pipe, reducing the risk of blockage. The grating cover and the drainage outlet body are detachably connected by bolts, ensuring a stable connection, preventing loosening, avoiding loss of the grating cover, and reducing bridge maintenance costs. A further preferred embodiment includes an epoxy mortar underlayment laid between the square box girder and the bridge beam. The epoxy mortar underlayment is approximately 10mm thick, and waterproof adhesive can also be applied to the outer perimeter of the square box to prevent water seepage.

[0005] A further preferred embodiment includes a filter ball installed at the top of the drain pipe inside the square box. The filter ball is made of stainless steel, with filter holes on its surface, and is a hollow mesh sphere. As a second line of defense against debris, the filter ball isolates impurities in the water, further improving the cleanliness of the drainage. It effectively prevents garbage from entering the bridge's drainage pipes through the drain outlet, avoiding blockages caused by impurities accumulating in the pipes. The filter ball can be disassembled into two hollow hemispheres. During rainy weather, rainwater from the bridge surface is filtered through the grille holes of the grille cover, blocking larger debris. After the water flows into the square box from the inlet, the filter ball performs secondary filtration of the debris, storing it in the well chamber to prevent it from flowing into the pipe below the drain outlet and causing blockages. Later, the bolts can be removed to open the grille cover and clean the debris inside the square box.

[0006] A further preferred embodiment is that the drain outlet body is integrally cast from cast iron or made of stainless steel. This improves the corrosion resistance of the drain outlet body, extends its service life, reduces the replacement frequency and cost of the device, and has high practicality and economy. The grating cover is also integrally cast from cast iron or made of stainless steel.

[0007] Further preferred embodiment: The grille holes are divided into rectangular short grille holes and long grille holes. The width of the grille holes is 30mm, which can effectively block larger debris from entering. The short grille holes and long grille holes are alternately arranged. The two ends of the long grille holes are set as countersunk holes. Bolt mounting holes are provided at both ends of the long grille holes and on the corresponding square box. Bolts are installed in the bolt mounting holes to fix the grille cover plate to the drain outlet body.

[0008] A further preferred embodiment: the bolt mounting holes are open holes, and the bottom of the bolt mounting holes on the square box is welded with nuts that match the bolts. After the grille cover is installed, the bolts can be locked by rotating them so that they move downwards inside the nuts. The downward height of the long grille holes ensures that the head of the bolt does not exceed the top surface of the grille cover, so as not to affect the normal passage of vehicles.

[0009] This integrated bridge drainage outlet device comprises a grating cover and drainage pipes, integrally molded from cast iron or stainless steel. It effectively extends service life, improves bridge deck drainage efficiency, and prevents water seepage from affecting the bridge structure's durability, offering high practicality and economy. The grating cover, with filter balls inside, effectively prevents debris from entering the bridge's drainage pipes and causing blockages. The grating cover and drainage pipes are detachably connected with bolts, solving the problems of loosening, falling off, or being lost with traditional grating covers, and improving the overall performance of the drainage outlet. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the longitudinal section of this integral bridge drainage outlet device; Figure 2 This is a schematic diagram of the transverse cross-section of this integral bridge drainage outlet device; Figure 3 This is a structural schematic diagram of the grating cover plate; Figure 4 yes Figure 3 Schematic diagram of the cross-section at the medium-length grille opening; Figure 5 This is a schematic diagram of the structure of the drain outlet body; Figure 6 yes Figure 5 Schematic diagram of the cross section along the AA direction; Figure 7 yes Figure 5 Schematic diagram of the cross section along the BB direction; The component names with the serial numbers in the diagram are: 1. Drainage outlet body; 2. Embedded pipe; 3. Bridge beam; 4. Epoxy mortar bedding layer; 5. Filter ball; 6. Bridge deck pavement layer; 7. Bridge deck; 8. Nut; 9. Grating cover plate; 10. Bolt; 11. Crash guardrail; 12. Bolt mounting hole; 13. Water inlet; 14. Drain pipe; 15. Square box; 16. Short grating hole; 17. Long grating hole. Detailed Implementation

[0011] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0012] Example

[0013] As shown in the figure, an integrated bridge drainage outlet device includes a drainage outlet body 1 and a grating cover plate 9. The drainage outlet body 1 includes a square box 15, which is embedded in the bridge deck pavement layer 6 near the crash barrier 11. The top of the square box 15 is provided with a water inlet 13, and the bottom of the square box 15 is connected to a drain pipe 14. The drain pipe 14 is inserted into a pre-embedded pipe 2 embedded in the bridge beam 3. The outer wall of the drain pipe 14 is in close contact with the inner wall of the pre-embedded pipe 2, and the bottom of the drain pipe 14 is connected to the drainage pipe on the bridge. The grating cover 9 is installed on the top surface of the square box 15. The top surface of the grating cover 9 is flush with the top surface of the bridge deck pavement layer 6. The grating cover 9 is provided with multiple grating holes that communicate with the water inlet 13. The grating holes can effectively block large debris such as fallen leaves and plastic bags from entering the drainage pipe, reducing the risk of pipe blockage. The grating cover 9 and the drainage outlet body 1 are detachably connected by bolts 10, so that the connection between the grating cover 9 and the drainage outlet body 1 is stable, preventing loosening, avoiding the loss of the grating cover 9, and reducing the bridge maintenance cost. An epoxy mortar pad 4 is laid between the square box 15 and the bridge beam 3. The thickness of the epoxy mortar pad 4 is about 10mm.

[0014] A filter ball 5 is installed at the top of the drain pipe 14 inside the square box 15. The filter ball 5 is made of stainless steel and has filter holes on its surface. It is a hollow mesh ball. The filter ball 5 acts as a second line of defense against debris, effectively isolating debris in the water and further improving the cleanliness of the drainage. It can effectively prevent garbage from entering the bridge drainage pipe through the drain outlet device and avoid impurities from accumulating in the pipe and causing blockage. The filter ball 5 can be disassembled into two hollow hemispheres. In rainy weather, rainwater on the bridge surface is filtered through the grid holes of the grid cover plate 1, and larger debris is blocked. After the water flows into the square box 15 from the inlet 13, the filter ball 5 performs secondary filtration of the debris, storing the debris in the well chamber to prevent it from flowing into the pipe at the bottom of the drain outlet and causing blockage. Later, the bolts 10 can be removed to open the grid cover plate 9 and clean the debris inside the square box 15.

[0015] The drain outlet body 1 is formed by integral casting of cast iron or by stainless steel.

[0016] The grille holes are divided into rectangular short grille holes 16 and long grille holes 17. The width of the grille holes is 30mm, which can effectively block larger debris from entering. The short grille holes 16 and long grille holes 17 are alternately arranged. The two ends of the long grille holes 17 are countersunk holes. Bolt mounting holes 12 are provided on both ends of the long grille holes 17 and on the corresponding square box 15. Bolts 10 are installed in the bolt mounting holes 12 to fix the grille cover plate 9 to the drain outlet body 1.

[0017] The bolt mounting holes 12 are open holes. The bottom of the bolt mounting holes 12 on the square box 15 is welded with nuts 8 that match the bolts 10. After the grid cover plate 9 is installed, the bolts 10 can be locked by rotating them so that they move downwards inside the nuts 8. The downward height of the long grid hole 17 ensures that the head of the bolts 10 does not exceed the top surface of the grid cover plate 9.

[0018] The above description is not intended to limit this application, nor is this application limited to the examples described above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this application should fall within the protection scope of this application.

Claims

1. An integral bridge drainage outlet device, comprising a drainage outlet body (1) and a grating cover plate (9), characterized in that, The drainage outlet body (1) includes a square box (15), which is embedded in the bridge deck pavement layer (6). The top of the square box (15) is provided with a water inlet (13), and the bottom of the square box (15) is connected to a drain pipe (14). The drain pipe (14) is inserted into the pre-embedded pipe (2) of the bridge beam (3), and the bottom of the drain pipe (14) is connected to the drainage pipe on the bridge. The grating cover plate (9) is covered on the top surface of the square box (15). The top surface of the grating cover plate (9) is flush with the top surface of the bridge deck pavement layer (6). The grating cover plate (9) is provided with multiple grating holes that communicate with the water inlet (13). The grating cover plate (9) and the drainage outlet body (1) are detachably connected by bolts (10).

2. The integral bridge drainage outlet device according to claim 1, characterized in that: An epoxy mortar pad (4) is laid between the square box (15) and the bridge beam (3).

3. The integral bridge drainage outlet device according to claim 1 or 2, characterized in that: A filter ball (5) is installed inside the square box (15) at the top of the drain pipe (14).

4. The integral bridge drainage outlet device according to claim 1, characterized in that: The drain outlet body (1) is formed by integral casting of cast iron or by stainless steel.

5. The integral bridge drainage outlet device according to claim 1, characterized in that: The grille holes are divided into rectangular short grille holes (16) and long grille holes (17). The short grille holes (16) and long grille holes (17) are alternately arranged. The two ends of the long grille holes (17) are countersunk. The two ends of the long grille holes (17) and the corresponding square box (15) are provided with bolt mounting holes (12). Bolts (10) are installed in the bolt mounting holes (12) to fix the grille cover plate (9) to the drain outlet body (1).

6. The integral bridge drainage outlet device according to claim 5, characterized in that: The bolt mounting holes (12) are open holes, and the bottom of the bolt mounting holes (12) on the square box (15) is welded with nuts (8) that match the bolts (10).

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