Drainage device for roadbed filling construction and filling construction method thereof

Abstract

The invention discloses a drainage device for roadbed filling construction and a filling construction method thereof, and belongs to the technical field of building construction. The drainage device for roadbed filling construction comprises a roadbed body, a drainage pipeline is arranged on the roadbed body, and a drainage slope which is obliquely distributed is arranged in the drainage pipeline; and a solid intercepting frame is arranged at the drainage pipeline. According to the drainage device for roadbed filling construction and the filling construction method of the drainage device, in the solid waste discharging process of the solid intercepting frame, solid waste in the drainage pipeline can be intercepted through the rainwater blocking plate, and the situation that in the rainwater flowing process, part of the solid waste is wrapped by the rainwater to flow to the downward flowing position of the drainage pipeline is avoided; in this way, large solid waste does not exist in the filtered rainwater, and pipelines used during follow-up irrigation cannot be blocked.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a drainage device for roadbed filling construction and its filling construction method. Background Technology

[0002] Roadbed engineering refers to the technical system of constructing open-air engineering structures using soil and rock materials. It includes two basic forms: embankments (fill) and cuttings (excavation). Together with bridges and tunnels, it forms the basic framework of transportation routes.

[0003] Currently, drainage devices for rainwater discharge are laid on the roadbed. In order to filter the rainwater and make full use of the filtered rainwater, interception frames are installed at the drainage devices to filter solid waste in the rainwater. In order to prevent the interception frames from clogging, a corresponding mechanism is installed at the drainage devices to allow the interception frames to flip. When flipped, the solid waste inside the interception frames can be removed, so that the rainwater can be filtered and utilized for a long time.

[0004] However, during the flipping process of the interception frame, the drainage device lacks interception components. At this time, the flowing rainwater carries some solid waste to the downstream end of the drainage device, which can easily lead to the irrigation pipes being blocked by the carried-down solid waste when using this rainwater for irrigation. Therefore, this application proposes a drainage device for roadbed filling construction and a filling construction method thereof. Summary of the Invention

[0005] The purpose of this invention is to provide a drainage device and a filling construction method for roadbed filling, so as to solve the problem mentioned in the background art that the drainage device lacks interception components during the process of the interception frame flipping, and at this time the flowing rainwater carries some solid waste to the downstream of the drainage device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drainage device for roadbed filling construction, comprising a roadbed body, wherein a drainage pipe is provided on the roadbed body, and the drainage pipe is provided with inclined drainage slopes. The drainage pipe is equipped with a solid interception frame, an interception support that rotates with the solid interception frame and is installed on the drainage pipe, and a flipping drive mechanism connected to the solid interception frame. The drainage pipe is equipped with a rainwater blocking plate, a blocking plate travel drive mechanism connected to the rainwater blocking plate, and a blocking plate angle adjustment mechanism connected to the rainwater blocking plate. The rainwater blocking plate has at least two states, including a blocking state and a flow state. When the rainwater blocking plate is in the blocking state, the rainwater blocking plate is perpendicular to the drainage slope in the drainage pipe. When the rainwater blocking plate is in a flow state, the rainwater blocking plate is located above the solid interception frame, and the rainwater blocking plate is raised and distributed upwards in the opposite direction to the rainwater flow.

[0007] Preferably, the roadbed is provided with protective grids, and several square planting areas are set in the protective grids. A water-stop strip is laid on the inside of the drainage pipe to isolate water and prevent rainwater from seeping into the bottom of the drainage pipe.

[0008] Preferably, a top plate is provided on the upper side of the drainage pipe, and a flipping drive mechanism is used to drive the solid interception frame to rotate, so as to send the solid waste intercepted inside to the top plate.

[0009] Preferably, the solid interception frame includes a collection groove and an upwardly inclined waste inlet. The solid interception frame also includes a support block, which abuts against the drainage slope of the drainage pipe when the solid interception frame is inserted into the drainage pipe.

[0010] Preferably, the top plate is installed parallel to the upper side of the drainage pipe, and the top plate is provided with a plurality of filter holes aligned with the drainage pipe. The top plate is provided with a frame for collecting solid waste intercepted at the solid interception frame. A discharge baffle is provided on the side of the frame away from the solid interception frame, and the discharge baffle slides up and down with the frame.

[0011] Preferably, the flipping drive mechanism includes a flipping spindle connected to the solid intercepting frame, a transmission mechanism connected to the flipping spindle, and a flipping drive motor mounted on the drainage pipe.

[0012] Preferably, the flipping drive mechanism further includes a positioning shaft connected to the flipping main shaft, and the positioning shaft is provided with a positioning groove.

[0013] Preferably, the sealing plate traveling drive mechanism includes a rotating plate, a rotating shaft connected to the rotating plate, a traveling drive motor connected to the rotating shaft, a push-pull plate movably connected to the rotating plate, and a traveling bracket rotatably engaged with the push-pull plate and used for installing the rainwater sealing plate. The top of the rainwater sealing plate rotatably engages with the traveling bracket. The drainage pipe is provided with guide rails distributed parallel to the drainage pipe and a slider slidably engaged with the guide rails and connected to the traveling bracket.

[0014] Preferably, the sealing plate angle adjustment mechanism includes an inclined plate, a movable frame that rotatably engages with the inclined plate, a traveling roller mounted on the movable frame, and a traveling track inserted into the movable frame and abutting against the traveling roller. The end of the inclined plate away from the movable frame rotatably engages with the bottom of the rainwater sealing plate. The traveling track includes a straight section and an arc section, which are smoothly connected. The arc section is raised to the upper side.

[0015] A roadbed filling construction method, used for laying drainage devices for roadbed filling construction, includes the following steps: Step 1: Preparation stage; site clearing, surveying and setting out, strength testing; Step Two, Laying Stage; Constructing the Roadbed; Step 3: Installation of drainage pipes; Lay the drainage pipes onto the constructed roadbed.

[0016] Beneficial effects: This invention provides a drainage device and its construction method for roadbed filling. The rainwater sealing plate has at least two states, including a sealing state and a flow state. When the rainwater sealing plate is in the sealing state, it is perpendicular to the drainage slope inside the drainage pipe. At this time, there is a small gap between the rainwater sealing plate and the inner wall of the bottom of the drainage pipe. The gap allows rainwater to pass through, but does not allow large solid waste to pass through. In this way, during the solid waste discharge process of the solid interception frame, the rainwater sealing plate can intercept the solid waste in the drainage pipe, preventing some of the solid waste from flowing into the downstream of the drainage pipe during the rainwater flow. Thus, the filtered rainwater does not contain large solid waste and will not block the pipes used for subsequent irrigation.

[0017] This invention provides a drainage device and its construction method for roadbed filling. When the rainwater blocking plate is in a flow state, it can be raised to the upper side, so as not to obstruct the solid interception frame from normally intercepting rainwater. The travel track includes a straight part and an arc-shaped part, which are smoothly connected. The arc-shaped part is raised to the upper side. During the movement of the travel support and the rainwater blocking plate to the right, the travel roller and the moving frame move along the travel track. When it reaches the arc-shaped part, the moving frame is raised to the upper side, which will pull the bottom of the rainwater blocking plate connected to it to be raised to the upper side. In this way, the height of the bottom of the rainwater blocking plate can be increased, allowing solid waste in the drainage pipe to enter the interior of the drainage pipe normally.

[0018] This invention provides a drainage device and its construction method for roadbed filling. A rainwater gathering plate is installed at the drainage pipe, which is inclined towards the center line of the drainage pipe. This allows rainwater to gather towards the center of the drainage pipe, so that the rainwater and solid waste can enter the interior of the solid interception frame and not remain on the outer wall of the solid interception frame where it meets the drainage pipe. This avoids the accumulation of solid waste on the outer wall of the solid interception frame. At the same time, a top plate is set above the drainage pipe and covers the lower half of the drainage pipe, which can prevent solid waste from falling directly into the lower half of the drainage pipe and ensure that the filtered rainwater does not contain large solid waste. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the drainage device used in roadbed filling construction according to the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A; Figure 3 For the present invention Figure 1 Enlarged structural diagram at point B; Figure 4 For the present invention Figure 1 Enlarged structural diagram at point C; Figure 5 This is a top view of the drainage device used in the roadbed filling construction of the present invention; Figure 6 For the present invention Figure 5 Sectional view at FF; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point D; Figure 8 For the present invention Figure 6 A magnified structural diagram at point E in the middle.

[0020] Explanation of reference numerals in the attached figures: 1. Roadbed structure; 2. Protective grid; 3. Drainage pipes; 4. Waterstop strip; 5. Solid interception frame; 501. Storage slot; 502. Waste inlet; 503. Support block; 6. Interception support; 7. Tilting drive mechanism; 701. Tilting spindle; 702. Transmission mechanism; 703. Tilting drive motor; 704. Positioning shaft; 705. Positioning slant groove; 8. Rainwater sealing plate; 9. Sealing plate travel drive mechanism; 901. Rotating plate; 902. Rotating shaft; 903. Push-pull plate; 904. Traveling bracket; 905. Guide rail; 906. Slider; 10. Sealing plate angle adjustment mechanism; 1001. Inclined plate; 1002. Moving frame; 1003. Traveling rollers; 1004. Traveling track; 11. Rainwater collection plate. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] like Figures 1-8As shown in the figure, an embodiment of the present invention provides a drainage device for roadbed filling construction, including a roadbed body 1, on which a protective grid 2 is provided. Several square planting areas are set in the protective grid 2. The soil at the roadbed body 1 is solidified by the protective grid 2. At the same time, plants are planted in the planting areas, and the root system of the plants further solidifies the roadbed body 1, so that the roadbed body 1 can be maintained under the erosion of rainwater, reducing the soil erosion rate, reducing the frequency of subsequent soil replenishment, and reducing the difficulty of maintenance.

[0023] Specifically, a drainage pipe 3 is installed on the roadbed 1. A waterstop 4 is laid inside the drainage pipe 3. The waterstop 4 is used to isolate water, preventing rainwater from seeping into the bottom of the drainage pipe 3. The waterstop 4 uses a commonly available waterproof type, which can effectively isolate rainwater and prevent rainwater from seeping into the outer shell of the drainage pipe 3, protecting the drainage pipe 3 and delaying premature damage to the drainage pipe 3 due to rainwater infiltration as much as possible. The drainage pipe 3 has inclined drainage slopes inside, and rainwater flows downward along the drainage slopes.

[0024] Specifically, the drainage pipe 3 is equipped with a solid interception frame 5, an interception support 6 that rotates with the solid interception frame 5 and is installed on the drainage pipe 3, a flipping drive mechanism 7 connected to the solid interception frame 5, and a top plate located on the upper side of the drainage pipe 3. The solid interception frame 5 is provided with a through hole for rainwater to pass through. The flipping drive mechanism 7 is used to drive the solid interception frame 5 to rotate and send the solid waste intercepted inside to the top plate. When it rains, the drainage pipe 3 is used for the flow of rainwater, and the solid interception frame 5 is used to intercept branches, leaves and other debris that fall into the drainage pipe 3. Rainwater can be discharged through the through hole in the solid interception frame 5.

[0025] It should be noted that this can be referred to Figure 6 The solid interception frame 5 includes a collection slot 501 and an upwardly inclined waste inlet 502. The solid interception frame 5 also includes a support block 503. When the solid interception frame 5 is inserted into the drainage pipe 3, the support block 503 abuts against the drainage slope of the drainage pipe 3.

[0026] After being intercepted and filtered by the solid interception frame 5, the rainwater has achieved preliminary purification. The purified rainwater can be used for irrigation of plants, usually in the green belts along the roads, thus making full use of the rainwater.

[0027] Specifically, the top plate is installed parallel to the upper side of the drainage pipe 3. The top plate is provided with several filter holes aligned with the drainage pipe 3. A frame is provided on the top plate. The frame is used to collect the solid waste intercepted at the solid interception frame 5. A discharge baffle is provided on the side of the frame away from the solid interception frame 5. The discharge baffle slides up and down with the frame.

[0028] The frame is equipped with a discharge port. The discharge baffle can be pulled to expose the discharge port at the frame. At this time, the solid waste on the inclined top plate can be removed. The discharge port can be blocked by the discharge baffle, which can collect the solid waste.

[0029] Specifically, the flipping drive mechanism 7 includes a flipping main shaft 701 connected to the solid intercepting frame 5, a transmission mechanism 702 connected to the flipping main shaft 701, and a flipping drive motor 703 mounted on the drainage pipe 3. The transmission mechanism 702 is used to connect the flipping main shaft 701 and the flipping drive motor 703. The transmission mechanism 702 can be connected by a transmission wheel or a transmission belt; it can also be connected by a sprocket or a chain. Its purpose is to transmit the kinetic energy output by the flipping drive motor 703 to the solid intercepting frame 5.

[0030] It should be noted that the flipping drive mechanism 7 also includes a positioning shaft 704 connected to the flipping main shaft 701, and a positioning groove 705 is provided on the positioning shaft 704.

[0031] The flip drive motor 703 can drive the flip main shaft 701 to rotate through the transmission mechanism 702. The flip main shaft 701 is fixedly connected to the solid interception frame 5. In this way, the solid interception frame 5 and the solid waste intercepted inside will rotate together with the flip main shaft 701. The solid interception frame 5 rotates upward, and the solid waste in its collection groove 501 falls onto the top plate of the drainage pipe 3. This can complete the unblocking work of the drainage pipe 3 and prevent the drainage pipe 3 from being blocked by solid waste.

[0032] During the flipping of the solid interception frame 5, the drainage pipe 3 lacks interception components. At this time, the flowing rainwater will carry some solid waste to the downstream of the drainage pipe 3. This can easily lead to the irrigation pipe being blocked by the solid waste carried down when using this rainwater for irrigation. Therefore, a rainwater blocking plate 8, a blocking plate travel drive mechanism 9 connected to the rainwater blocking plate 8, and a blocking plate angle adjustment mechanism 10 connected to the rainwater blocking plate 8 are provided at the drainage pipe 3. The blocking plate travel drive mechanism 9 is used to drive the rainwater blocking plate 8 to move, while the blocking plate angle adjustment mechanism 10 is used to adjust the angle of the rainwater blocking plate 8.

[0033] Driven by the blocking plate travel drive mechanism 9 and the blocking plate angle adjustment mechanism 10, the rainwater blocking plate 8 has at least two states, including a blocking state and a flow state. When the rainwater blocking plate 8 is in the blocking state, the rainwater blocking plate 8 is perpendicular to the drainage slope in the drainage pipe 3. At this time, there is a small gap between the rainwater blocking plate 8 and the inner wall at the bottom of the drainage pipe 3. The gap allows rainwater to pass through, but does not allow large solid waste to pass through. In this way, during the solid waste discharge process of the solid interception frame 5, the solid waste in the drainage pipe 3 can be intercepted by the rainwater blocking plate 8, preventing some solid waste from flowing into the downstream of the drainage pipe 3 during the flow of rainwater. Thus, the filtered rainwater does not contain large solid waste and will not block the pipe used for subsequent irrigation. Specifically, when the rainwater blocking plate 8 is in the flow state, it is located above the solid interception frame 5 and is raised upwards in the opposite direction to the rainwater flow. This upward movement of the rainwater blocking plate 8 in the flow state does not obstruct the solid interception frame 5 from intercepting rainwater. At this time, the rotating plate 901 is inserted into the positioning groove 705 in the positioning shaft 704. The positioning shaft 704 and the flipping main shaft 701 cannot rotate due to the obstruction of the rotating plate 901. This prevents interference between the solid interception frame 5 and the rainwater blocking plate 8 when the flipping drive mechanism 7 is activated. The solid interception frame 5 can only rotate when the rainwater blocking plate 8 is switched to the blocking state. This ensures that before the solid interception frame 5 discharges solid waste, the drainage pipe 3 is blocked by the rainwater blocking plate 8, preventing solid waste from flowing directly into the drainage pipe 3 without being intercepted.

[0034] Specifically, the sealing plate travel drive mechanism 9 includes a rotating plate 901, a rotating shaft 902 connected to the rotating plate 901, a travel drive motor connected to the rotating shaft 902, a push-pull plate 903 movably connected to the rotating plate 901, and a travel bracket 904 rotatably engaged with the push-pull plate 903 and used for installing the rainwater sealing plate 8. The top of the rainwater sealing plate 8 rotatably engages with the travel bracket 904.

[0035] The drive motor can drive the rotating shaft 902 to rotate. The rotating shaft 902 is fixedly engaged with the rotating plate 901. In this way, the rotating shaft 902 can drive the rotating plate 901 to rotate. During the rotation of the rotating plate 901, the push-pull plate 903 can push the traveling bracket 904 to move. The rainwater sealing plate 8 installed on the traveling bracket 904 moves synchronously with the rainwater sealing plate 8, thus realizing the moving function of the rainwater sealing plate 8.

[0036] Specifically, in order to restrict the movement of the rainwater blocking plate 8, a guide rail 905 parallel to the drainage pipe 3 and a slider 906 that slides with the guide rail 905 and is connected to the traveling bracket 904 are provided on the drainage pipe 3.

[0037] Specifically, the sealing plate angle adjustment mechanism 10 includes an inclined plate 1001, a movable frame 1002 that rotatably engages with the inclined plate 1001, a traveling roller 1003 mounted on the movable frame 1002, and a traveling track 1004 inserted into the movable frame 1002 and abutting against the traveling roller 1003. The end of the inclined plate 1001 away from the movable frame 1002 rotatably engages with the bottom of the rainwater sealing plate 8.

[0038] It should be noted that the travel track 1004 includes a straight section and an arc section. The straight section and the arc section are smoothly connected. The arc section is raised to the upper side. During the movement of the travel support 904 and the rainwater sealing plate 8 to the right, the travel roller 1003 and the moving frame 1002 move along the travel track 1004. When they reach the arc section, the moving frame 1002 is raised to the upper side, which will pull the bottom of the rainwater sealing plate 8 connected to it to be raised to the upper side. In this way, the height of the bottom of the rainwater sealing plate 8 can be increased, allowing solid waste in the drainage pipe 3 to enter the interior of the drainage pipe 3 normally.

[0039] More specifically, a rainwater gathering plate 11 is installed at the drainage pipe 3. The rainwater gathering plate 11 is inclined towards the center line of the drainage pipe 3, so that rainwater can be gathered towards the center of the drainage pipe 3. In this way, the rainwater and solid waste inside can enter the interior of the solid interception frame 5 and will not be left in the area where the outer wall of the solid interception frame 5 meets the drainage pipe 3. This can prevent the accumulation of solid waste on the outer wall of the solid interception frame 5. At the same time, the top plate is set above the drainage pipe 3 and covers the lower half of the drainage pipe 3, which can prevent solid waste from falling directly into the lower half of the drainage pipe 3, ensuring that the filtered rainwater does not contain large solid waste.

[0040] A roadbed filling construction method includes the following steps: Step 1: Preparation stage; site clearing, surveying and setting out, strength testing; Step 2, Laying Stage; Constructing the Roadbed 1; Step 3: Installation of drainage pipe 3; Lay drainage pipe 3 onto the constructed roadbed 1.

[0041] In summary, this invention provides a drainage device and a filling construction method for roadbed filling. The rainwater sealing plate 8 has at least two states, including a sealing state and a flow state. When the rainwater sealing plate 8 is in the sealing state, it is perpendicular to the drainage slope inside the drainage pipe 3. At this time, there is a small gap between the rainwater sealing plate 8 and the inner wall at the bottom of the drainage pipe 3. The gap allows rainwater to pass through, but does not allow large solid waste to pass through. Thus, during the solid waste discharge process of the solid interception frame 5, the solid waste in the drainage pipe 3 can be intercepted by the rainwater sealing plate 8, preventing some of the solid waste from flowing into the downstream of the drainage pipe 3 during the flow of rainwater. In this way, the filtered rainwater does not contain large solid waste and will not block the pipe used for subsequent irrigation. When the rainwater blocking plate 8 is in a flow state, it can be raised to the upper side, so as not to obstruct the solid interception frame 5 from intercepting rainwater normally. The travel track 1004 includes a straight part and an arc-shaped part, which are smoothly connected. The arc-shaped part is raised to the upper side. During the movement of the travel support 904 and the rainwater blocking plate 8 to the right, the travel roller 1003 and the moving frame 1002 move along the travel track 1004. When it moves to the arc-shaped part, the moving frame 1002 is raised to the upper side, which will pull the bottom of the rainwater blocking plate 8 connected to it to be raised to the upper side. In this way, the height of the bottom of the rainwater blocking plate 8 can be increased, allowing solid waste in the drainage pipe 3 to enter the interior of the drainage pipe 3 normally.

[0042] A rainwater gathering plate 11 is installed at the drainage pipe 3. The rainwater gathering plate 11 is inclined towards the center line of the drainage pipe 3, so that rainwater can be gathered towards the center of the drainage pipe 3. In this way, the rainwater and solid waste in it can enter the interior of the solid interception frame 5 and will not be left in the area where the outer wall of the solid interception frame 5 meets the drainage pipe 3. This can prevent the accumulation of solid waste on the outer wall of the solid interception frame 5. At the same time, the top plate is set above the drainage pipe 3 and covers the lower half of the drainage pipe 3, which can prevent solid waste from falling directly into the lower half of the drainage pipe 3 and ensure that the filtered rainwater does not contain large solid waste.

[0043] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A drainage device for roadbed filling construction, comprising a roadbed body (1), characterized in that, The road body (1) is provided with a drainage pipe (3), and the drainage pipe (3) is provided with inclined drainage slopes. A solid interception frame (5), an interception support (6) that rotates with the solid interception frame (5) and is installed on the drainage pipe (3), and a flipping drive mechanism (7) that is connected to the solid interception frame (5) are provided at the drainage pipe (3). The drainage pipe (3) is provided with a rainwater sealing plate (8), a sealing plate travel drive mechanism (9) connected to the rainwater sealing plate (8), and a sealing plate angle adjustment mechanism (10) connected to the rainwater sealing plate (8). The rainwater blocking plate (8) has at least two states, including a blocking state and a flow state. When the rainwater blocking plate (8) is in the blocking state, the rainwater blocking plate (8) is perpendicular to the drainage slope in the drainage pipe (3). When the rainwater blocking plate (8) is in a flow state, the rainwater blocking plate (8) is located above the solid interception frame (5), and the rainwater blocking plate (8) is raised and distributed upward along the direction opposite to the flow of rainwater.

2. The drainage device for roadbed filling construction as described in claim 1, characterized in that, The roadbed (1) is provided with a protective grid (2), and a number of square planting areas are provided in the protective grid (2). The drainage pipe (3) is provided with a water-stop strip (4) on the inside. The water-stop strip (4) is used to isolate water and prevent rainwater from seeping into the bottom of the drainage pipe (3).

3. A drainage device for roadbed filling construction as described in claim 1, characterized in that, The upper side of the drainage pipe (3) is provided with a top plate, and the flipping drive mechanism (7) is used to drive the solid interception frame (5) to rotate and send the solid waste intercepted inside to the top plate.

4. A drainage device for roadbed filling construction as described in claim 3, characterized in that, The solid interception frame (5) includes a storage groove (501) and an upwardly inclined waste inlet (502). The solid interception frame (5) also includes a support block (503). When the solid interception frame (5) is inserted into the drainage pipe (3), the support block (503) abuts against the drainage slope of the drainage pipe (3).

5. A drainage device for roadbed filling construction as described in claim 4, characterized in that, The top plate is installed parallel to the upper side of the drainage pipe (3). The top plate is provided with a number of filter holes aligned with the drainage pipe (3). The top plate is provided with a frame for collecting solid waste intercepted at the solid interception frame (5). A discharge baffle is provided on the side of the frame away from the solid interception frame (5). The discharge baffle slides up and down with the frame.

6. A drainage device for roadbed filling construction as described in claim 1, characterized in that, The flip drive mechanism (7) includes a flip main shaft (701) connected to the solid interception frame (5), a transmission mechanism (702) connected to the flip main shaft (701), and a flip drive motor (703) installed on the drainage pipe (3).

7. A drainage device for roadbed filling construction as described in claim 6, characterized in that, The flipping drive mechanism (7) also includes a positioning shaft (704) connected to the flipping main shaft (701), and the positioning shaft (704) is provided with a positioning groove (705).

8. A drainage device for roadbed filling construction as described in claim 1, characterized in that, The sealing plate travel drive mechanism (9) includes a rotating plate (901), a rotating shaft (902) connected to the rotating plate (901), a travel drive motor connected to the rotating shaft (902), a push-pull plate (903) movably connected to the rotating plate (901), and a travel bracket (904) rotatably engaged with the push-pull plate (903) and used for installing the rainwater sealing plate (8). The top of the rainwater sealing plate (8) rotatably engages with the travel bracket (904). The drainage pipe (3) is provided with a guide rail (905) distributed parallel to the drainage pipe (3) and a slider (906) slidably engaged with the guide rail (905) and connected to the travel bracket (904).

9. A drainage device for roadbed filling construction as described in claim 1, characterized in that, The sealing plate angle adjustment mechanism (10) includes an inclined plate (1001), a movable frame (1002) that rotates with the inclined plate (1001), a traveling roller (1003) mounted on the movable frame (1002), and a traveling track (1004) inserted into the movable frame (1002) and abutting against the traveling roller (1003). The end of the inclined plate (1001) away from the movable frame (1002) rotates with the bottom of the rainwater sealing plate (8). The traveling track (1004) includes a straight part and an arc part. The straight part and the arc part are smoothly connected, and the arc part is raised to the upper side.

10. A method for roadbed filling construction, characterized in that, For laying the drainage device for roadbed filling construction according to any one of claims 1-9, the following steps are included: Step 1: Preparation stage; site clearing, surveying and setting out, strength testing; Step 2, Laying Stage; Constructing the Roadbed (1); Step 3: Installation of drainage pipe (3); Lay the drainage pipe (3) onto the constructed roadbed (1).

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