A type of drainage pipe for underpass foundation

Abstract

This utility model discloses a drainage pipe for an underpass foundation, relating to the field of road construction technology. It includes multiple pipes with two outfalls along the upper part of the outer wall of each pipe. Each outfall includes several equally spaced drain outlets. The inner wall of each drain outlet is equipped with an interception device to prevent gravel from entering the pipe. A rotating rod is rotatably connected inside each drain outlet, and a rotating plate is fixedly connected to the outer wall of the rotating rod to prevent water from flowing out of the pipe. A float is fixedly connected to the bottom surface of the rotating plate. A blocking device is provided along the side wall of each drain outlet to prevent the rotating plate from rotating counterclockwise. This utility model, by installing a drainage pipe in the gravel layer inside the road, facilitates the drainage of accumulated water at the junction of the underpass and the roadbed, preventing water damage to the road foundation and asphalt base layer. Furthermore, compared to a water-stop curtain, the pipe reduces construction and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, and in particular to a drainage diversion pipe for underpass roadbeds. Background Technology

[0002] The underpass is located in a low-lying area. If there are abundant water bodies in the surrounding area and the groundwater volume is large, water will gush out at the joint between the underpass foundation and the roadbed foundation, damaging the quality of the road foundation and asphalt surface. The seeping groundwater will freeze in winter, affecting road driving safety.

[0003] Existing technologies typically involve adding a water-stop curtain, but this method of blocking groundwater is costly. Considering cost and maintenance, adding a water-stop curtain is not practical. Utility Model Content

[0004] The purpose of this utility model is to provide a drainage pipe for underpass foundations to solve the problem mentioned in the background art that in existing road engineering projects, water easily accumulates between underpasses and roads, making drainage difficult and increasing project costs by adding a water-stop curtain.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drainage pipe for an underpass foundation, comprising multiple pipes, with two outfalls along the upper part of the outer wall of the pipes, each outfall including several equally spaced drain outlets, the inner wall of each drain outlet being provided with an interception device to prevent gravel from entering the pipes, a rotating rod being rotatably connected inside each drain outlet, a rotating plate being fixedly connected to the outer wall of the rotating rod to prevent water from flowing out of the pipes, a float being fixedly connected to the bottom surface of the rotating plate, and a blocking device being provided along the side wall of the drain outlet to prevent the rotating plate from rotating counterclockwise.

[0006] Preferably, the length of the rotating plate is greater than the length of the drain outlet, and a holding groove is provided at the bottom end of the side wall of the drain outlet, which is connected to the drain outlet.

[0007] Preferably, the interception device includes a plurality of blocking rods fixed at equal intervals inside the drain outlet.

[0008] Preferably, the side wall of the drain outlet has two guide grooves arranged in a circular array along one end of the rotating rod. Two guide rods are fixedly connected to the end of the rotating rod near the guide groove, and one end of each guide rod extends into the corresponding guide groove.

[0009] Preferably, two adjacent pipes can be spliced ​​together. One end of the pipe is fixedly connected to a second mounting plate. A sealing groove is provided on one side of the second mounting plate. One end of the pipe is fixedly connected to a first mounting plate. The first mounting plate of one pipe and the second mounting plate of the adjacent pipe are fixedly connected by bolts. A sealing ring is fixedly connected to one side of the first mounting plate. A sealing ring is fixedly connected to the outer wall of the sealing ring. The sealing ring and the sealing ring extend into the sealing groove at one end of the adjacent pipe.

[0010] Preferably, the float is made of plastic and is hollow.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model can facilitate the drainage of water at the junction of the underpass and the roadbed by installing a drainage pipe in the crushed stone layer inside the road, thus preventing water from damaging the road foundation and asphalt base layer. At the same time, the pipe can reduce the process cost and maintenance cost compared with the water-stop curtain.

[0013] 2. This practical pipe has a guide outlet on the pipe wall to guide the internal drain. An interception device is fixedly connected to the side wall of the drain to prevent gravel from falling into the pipe and causing blockage. At the same time, a rotating rod, rotating plate and float are installed in the drain. When the water flow in the pipe is too large, the rotating plate can close the drain to prevent the water in the pipe from backflowing onto the road surface. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 .

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the pipeline of this utility model.

[0017] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0018] Figure 5 This is a schematic diagram of the rotating plate part of this utility model.

[0019] Figure 6 This is a schematic diagram of the pipe installation location structure of this utility model.

[0020] In the diagram: 1. Pipe; 2. Drain outlet; 21. Container tank; 3. Rotating rod; 31. Rotating plate; 32. Float; 4. Blocking rod; 5. Mounting plate one; 51. Sealing ring; 52. Sealing ring; 6. Mounting plate two; 61. Sealing groove; 7. Guide groove; 8. Guide rod. Detailed Implementation

[0021] 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.

[0022] This utility model provides, for example Figure 1-6 The drainage pipe shown includes multiple pipes 1. Two outlets are provided along the upper part of the outer wall of the pipe 1. The outlets include several equally spaced drains 2. The inner wall of the drains 2 is provided with an interception device to prevent gravel from entering the pipe 1. A rotating rod 3 is rotatably connected inside the drains 2. A rotating plate 31 is fixedly connected to the outer wall of the rotating rod 3 to prevent water from flowing out of the pipe 1. A float 32 is fixedly connected to the bottom surface of the rotating plate 31. A blocking device is provided along the side wall of the drains 2 to prevent the rotating plate 31 from rotating counterclockwise.

[0023] The underpass base includes the road section and the underpass section. An engineering trench is opened between the road section and the underpass section. The trench is paved with road asphalt, 30cm C40 micro-expansion concrete and 20cm open-graded crushed stone from top to bottom. First, the drainage pipe is buried in the 20cm open-graded crushed stone. When the water on the road seeps into the crushed stone layer, the water flows into the pipe 1 through the drain 2 for diversion, so as to avoid water accumulation. At the same time, the blocking device intercepts the crushed stone to prevent the crushed stone from falling into the pipe 1 through the drain 2 and causing blockage in the pipe 1.

[0024] When the water flow in pipe 1 is too large, the water flow will float the float 32. The float 32 will drive the rotating plate 31 to flip through the buoyancy, so that the rotating plate 31 will close the drain outlet 2, preventing the water in pipe 1 from seeping back into the road surface. By burying pipe 1 in the gravel layer, it is easy to drain the water at the joint between the underpass and the roadbed, avoiding water damage to the road foundation and asphalt base layer. At the same time, pipe 1 has lower construction and maintenance costs compared to the water-stop curtain process, thus reducing investment.

[0025] like Figure 3 As shown, the length of the rotating plate 31 is greater than the length of the drain outlet 2. A holding groove 21 is provided at the bottom of the side wall of the drain outlet 2. The holding groove 21 is connected to the drain outlet 2. The drain outlet 2 is sealed by fitting the rotating plate 31 with the holding groove 21.

[0026] like Figure 2 As shown, the interception device includes several blocking rods 4 fixed at equal intervals inside the drain outlet 2; the blocking rods 4 are used to block the gravel and prevent it from falling into the pipe 1 and causing blockage.

[0027] like Figure 4 As shown, the side wall of the drain outlet 2 is provided with two guide grooves 7 arranged in a circular array along one end of the rotating rod 3. Two guide rods 8 are fixedly connected to one end of the rotating rod 3 near the guide groove 7, and one end of the two guide rods 8 extends into the corresponding guide groove 7.

[0028] By extending the guide rod 8 into the guide groove 7, the rotating rod 3 can be guided, preventing the rotating plate 31 from driving the rotating rod 3 to rotate counterclockwise by too large an angle, which would cause the float 32 to float up the rotating plate 31 in the opposite direction, thus failing to seal the drain outlet 2.

[0029] like Figure 1 and Figure 2 As shown, two adjacent pipes 1 can be spliced ​​together. One end of pipe 1 is fixedly connected to a second mounting plate 6. A sealing groove 61 is opened on one side of the second mounting plate 6. One end of pipe 1 is fixedly connected to a first mounting plate 5. The first mounting plate 5 of one pipe 1 and the second mounting plate 6 of the adjacent pipe 1 are fixedly connected by bolts. A sealing ring 51 is fixedly connected to one side of the first mounting plate 5. A sealing ring 52 is fixedly connected to the outer wall of the sealing ring 51. The sealing ring 51 and the sealing ring 52 extend into the sealing groove 61 at one end of the adjacent pipe 1.

[0030] During splicing, the sealing ring 51 and sealing ring 52 of the mounting plate 5 of pipe 1 are inserted into the sealing groove 61 of the mounting plate 6 of the adjacent pipe 1, and then the mounting plate 5 and the mounting plate 6 are fixed with fixing bolts to achieve a seal between pipes 1.

[0031] like Figure 3 As shown, float 32 is made of plastic and is hollow.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drainage diversion pipe for an underpass foundation, comprising multiple pipes (1), characterized in that: Two downflow outlets are provided along the upper part of the outer wall of the pipe (1). The downflow outlets include several equally spaced downflow outlets (2). The inner wall of the downflow outlet (2) is provided with an interception device to prevent gravel from entering the pipe (1). A rotating rod (3) is rotatably connected inside the downflow outlet (2). A rotating plate (31) to prevent water from flowing out of the pipe (1) is fixedly connected to the outer wall of the rotating rod (3). A float (32) is fixedly connected to the bottom surface of the rotating plate (31). A blocking device to prevent the rotating plate (31) from rotating counterclockwise is provided along the side wall of the downflow outlet (2).

2. The drainage pipe for an underpass foundation according to claim 1, characterized in that: The length of the rotating plate (31) is greater than the length of the drain (2). A holding trough (21) is provided at the bottom of the side wall of the drain (2). The holding trough (21) is connected to the drain (2).

3. The drainage pipe for an underpass foundation according to claim 1, characterized in that: The interception device includes several blocking rods (4) fixed at equal intervals inside the drain outlet (2).

4. A drainage pipe for an underpass foundation according to claim 1, characterized in that: The side wall of the drain outlet (2) is provided with two guide grooves (7) arranged in a circular array along one end of the rotating rod (3). Two guide rods (8) are fixedly connected to one end of the rotating rod (3) near the guide groove (7), and one end of the two guide rods (8) extends into the corresponding guide groove (7).

5. A drainage pipe for an underpass foundation according to claim 1, characterized in that: The two adjacent pipes (1) can be spliced ​​together. One end of the pipe (1) is fixedly connected to the second mounting plate (6). A sealing groove (61) is opened on one side of the second mounting plate (6). One end of the pipe (1) is fixedly connected to the first mounting plate (5). The first mounting plate of one pipe (1) and the second mounting plate (6) of the adjacent pipe (1) are fixedly connected by bolts. A sealing ring (51) is fixedly connected to one side of the first mounting plate (5). A sealing ring (52) is fixedly connected to the outer wall of the sealing ring (51). The sealing ring (51) and the sealing ring (52) extend into the sealing groove (61) at one end of the adjacent pipe (1).

6. A drainage pipe for an underpass foundation according to claim 1, characterized in that: The float (32) is made of plastic and is hollow.

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