A drainage and filtration structure for road and bridge subgrade and pavement

Abstract

This utility model relates to the field of drainage and filtration technology, specifically a drainage and filtration structure for road and bridge subgrades and pavements. The advantages of this utility model are: when there is a large amount of water accumulation on the road surface, the grating plate can be directly pulled up, causing the filter cage to be lifted. The filter holes on the side of the filter cage greatly increase the water inlet filtration area. Since most debris and impurities are on the water surface, with fewer impurities at the bottom, the bottom of the lifted filter cage can maintain efficient drainage, reducing the impact of blockage on drainage efficiency and improving drainage effect. The relative sliding and lifting of the piston cylinder, piston, and telescopic rod guides the sliding motion. After the filter cage is lifted, airflow is drawn into the piston cylinder through the one-way valve, creating pressure on the support platform for easy fixation after lifting. Pressing the handle opens the exhaust valve to release the air pressure, allowing the grating plate and filter cage to be pressed down, achieving a downward movement. The adjustable position of the lifting mechanism is ergonomically designed for operation.

Description

Technical Field

[0001] This utility model relates to the field of drainage and filtration technology, and in particular to a drainage and filtration structure for road and bridge subgrades and pavements. Background Technology

[0002] In road and bridge engineering, water accumulation on the road surface is a critical issue that directly threatens driving safety and the durability of the pavement structure. During rainfall, if water cannot drain quickly from the road surface, it will form a water film covering the surface, causing a sharp decrease in the friction between the tires and the road surface. This significantly increases the risk of vehicle skidding and rear-end collisions. Especially on sections of road with significant elevation differences, such as bridges, water accumulation can also cause "hydroplaning" due to vehicles traveling at high speeds, resulting in serious traffic accidents. At the same time, water that has been stagnant on the road surface for a long time will continuously seep into the base and subbase layers through cracks and joints in the pavement, deteriorating the strength of the structural layer materials, accelerating the appearance of potholes, cracks, and other road surface defects, significantly shortening the service life of the pavement, and increasing the frequency and cost of maintenance and repair.

[0003] Currently, road and bridge subgrade and pavement drainage is mostly guided by edge drainage ditches. However, when the pavement is drained, impurities and garbage can easily enter the drainage ditches and cause blockages. Therefore, the current drainage filtration structure is mostly to install filter gratings on the top of the drainage channel for interception and filtration. However, the drainage area of ​​the grating is small and the filter holes are easily blocked. During periods of high rainfall, the rapidly formed water cannot be drained quickly. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a drainage and filtration structure for road and bridge subgrade and pavement, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a road and bridge subgrade and pavement drainage and filtration structure, including a drainage diversion well. A mating groove is fixedly connected to the top of the drainage diversion well. A support plate is fixedly connected to the center of the bottom surface of the drainage diversion well. A piston cylinder is fixedly connected to the center of the top surface of the support plate. A piston is slidably connected to the inner wall of the piston cylinder. A telescopic rod is fixedly connected to the center of the top surface of the piston. A grid plate is fixedly connected to the top of the telescopic rod. A filter cage is fixedly connected to the bottom edge of the grid plate. A plurality of filter holes are opened on the side of the filter cage. The side wall of the filter cage is slidably connected to the inner wall of the drainage diversion well. An air inlet one-way valve is fixedly connected to one side of the bottom of the piston cylinder. A press-to-exhaust valve is fixedly connected to the middle of the grid plate. A handle is fixedly connected to the press head of the press-to-exhaust valve. A connecting hole is opened in the middle of the telescopic rod. The bottom end of the connecting hole passes through the piston and communicates with the inner wall of the piston cylinder. The top of the connecting hole communicates with the input end of the press-to-exhaust valve. The air inlet one-way valve opens unidirectionally into the piston cylinder.

[0006] Preferably, in any of the above embodiments, the size of the grating plate is adapted to the size of the inner wall of the mating groove, and the thickness of the grating plate is adapted to the depth of the inner wall of the mating groove.

[0007] The technical effect achieved by adopting the above solution is that the grating can be embedded and stored inside the mating groove so that the road surface water flow can converge and flow in.

[0008] Preferably, in any of the above embodiments, the depth of the filter cage is adapted to the depth of the inner wall of the drainage diversion well, and the outer wall of the filter cage is fully fitted to the inner wall of the drainage diversion well.

[0009] The technical effect achieved by adopting the above solution is that the adjustable height of the filter cage can be maximized by using this solution.

[0010] Preferably, in any of the above solutions, the height of the piston cylinder is adapted to the length of the telescopic rod, and the height of the piston cylinder is less than the height of the drainage diversion well and the filter cage.

[0011] The technical effect achieved by adopting the above solution is that the piston cylinder and telescopic rod can be adjusted to their maximum range, while the height of the filter cage pulled out can be limited to prevent it from falling out.

[0012] Preferably, in any of the above solutions, the grating plate and the mating groove are fitted together, and both the grating plate and the filter cage are made of lightweight materials.

[0013] The technical effect achieved by adopting the above solution is that the lightweight material can reduce the load when pulling the grid plate and filter cage, making adjustment and operation easier.

[0014] This utility model has the following advantages:

[0015] 1. The road and bridge subgrade and pavement drainage and filtration structure can directly pull up the grating plate when there is a large amount of water accumulation on the road surface, so that the filter cage is pulled up. The filter holes on the side of the filter cage can greatly increase the water inlet filtration area and improve the filtration and drainage efficiency. Moreover, most of the garbage and other impurities are on the water surface and there are fewer impurities at the bottom. Therefore, the bottom side of the pulled-up filter cage can maintain efficient drainage, reduce the impact of blockage on drainage efficiency, and improve the drainage effect.

[0016] 2. The road and bridge subgrade and pavement drainage and filtration structure guides the sliding by the relative sliding and lifting of the piston cylinder, piston, and telescopic rod. After the filter cage is pulled up, airflow is drawn into the piston cylinder through the one-way valve to form the support platform pressure, which facilitates fixation after being pulled up. By pressing the handle, the press exhaust valve can be opened to release the air pressure, which can then press down the grid plate and filter cage to achieve the descent. The lifting and adjusting position is fixed in accordance with the ergonomics of the operation and is easy to adjust. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0020] In the diagram: 1-Drainage diversion well, 2-Matching groove, 3-Filter cage, 4-Grate plate, 5-Press exhaust valve, 6-Handle, 7-Piston cylinder, 8-Intake check valve, 9-Piston, 10-Telescopic rod, 11-Filter hole, 12-Support plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0022] like Figures 1 to 3 As shown, a road and bridge subgrade and pavement drainage and filtration structure includes a drainage diversion well 1, a mating groove 2 fixedly connected to the top of the drainage diversion well 1, a support plate 12 fixedly connected to the center of the bottom surface of the drainage diversion well 1, a piston cylinder 7 fixedly connected to the center of the top surface of the support plate 12, a piston 9 slidably connected to the inner wall of the piston cylinder 7, a telescopic rod 10 fixedly connected to the center of the top surface of the piston 9, a grid plate 4 fixedly connected to the top of the telescopic rod 10, and a filter cage 3 fixedly connected to the bottom edge of the grid plate 4. The filter cage 3 has several filter holes 11 on its side. The side wall of the filter cage 3 is slidably connected to the inner wall of the drainage well 1. An air inlet check valve 8 is fixedly connected to one side of the bottom of the piston cylinder 7. A press exhaust valve 5 is fixedly connected to the middle of the grille plate 4. A handle 6 is fixedly connected to the press head of the press exhaust valve 5. A connecting hole is opened in the middle of the telescopic rod 10. The bottom end of the connecting hole passes through the piston 9 and communicates with the inner wall of the piston cylinder 7. The top of the connecting hole is connected to the input end of the press exhaust valve 5. The air inlet check valve 8 opens one-way to the inside of the piston cylinder 7.

[0023] As an optional technical solution of this utility model, the size of the grating plate 4 is adapted to the size of the inner wall of the mating groove 2, and the thickness of the grating plate 4 is adapted to the depth of the inner wall of the mating groove 2, so that the grating plate 4 can be embedded and stored inside the mating groove 2 so that the road surface water flow can converge and flow in.

[0024] As an optional technical solution of this utility model, the depth of the filter cage 3 is adapted to the depth of the inner wall of the drainage diversion well 1, and the outer wall of the filter cage 3 is fully fitted with the inner wall of the drainage diversion well 1, so as to maximize the adjustable height of the filter cage 3.

[0025] As an optional technical solution of this utility model, the height of the piston cylinder 7 is adapted to the length of the telescopic rod 10. The height of the piston cylinder 7 is less than the height of the drainage diversion well 1 and the filter cage 3, thereby maximizing the adjustable range of the piston cylinder 7 and the telescopic rod 10, while limiting the pull-out height of the filter cage 3 to prevent it from falling out.

[0026] As an optional technical solution of this utility model, the grating plate 4 and the mating groove 2 are fitted together. Both the grating plate 4 and the filter cage 3 are made of lightweight materials. The lightweight materials can reduce the load when pulling the grating plate 4 and the filter cage 3, and facilitate adjustment and operation.

[0027] The following steps are required when using this road and bridge subgrade and pavement drainage and filtration structure:

[0028] 1) When there is a large amount of water on the road surface, the grating plate 4 can be pulled up directly, so that the filter cage 3 is lifted up;

[0029] 2) The filter holes on the side of the filter cage 3 can greatly increase the water inlet filtration area and improve the filtration and drainage efficiency. Moreover, most of the garbage and impurities are on the water surface and there are fewer impurities at the bottom. Therefore, the bottom of the side of the filter cage 3 can maintain efficient drainage.

[0030] 3) The grille plate 4 pulls the telescopic rod 10 up, and draws air into the piston cylinder 7 through the one-way valve 8, forming the support platform pressure, which facilitates fixation after being pulled up;

[0031] 4) After drainage is completed, press the handle 6 to open the press-to-vent valve 5 to release the air pressure, which will then press down the grid plate 4 and filter cage 3 to make them fall.

[0032] In summary, when there is a large amount of water accumulation on the road surface, the grating plate 4 can be pulled up directly, causing the filter cage 3 to be lifted. The filter holes on the side of the filter cage 3 can greatly increase the water inlet filtration area, improve the filtration and drainage efficiency, and since most of the garbage and impurities are on the water surface and there are fewer impurities at the bottom, the bottom side of the lifted filter cage 3 can maintain efficient drainage, reduce the impact of blockage on drainage efficiency, and improve the drainage effect. The relative sliding and lifting of the piston cylinder 7, piston 9, and telescopic rod 10 guides the sliding. After the filter cage 3 is lifted, airflow is drawn into the piston cylinder 7 through the air inlet one-way valve 8, forming the support platform pressure, which facilitates fixation after lifting. By pressing the handle 6, the press exhaust valve 5 can be opened to release the air pressure, which can then press down the grating plate 4 and filter cage 3 to achieve a drop. The lifting and adjusting position is fixed in accordance with the ergonomics of the operation and is easy to adjust.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A road bridge embankment pavement drainage filtering structure, characterized by: The system includes a drainage diversion well (1), a mating groove (2) fixedly connected to the top of the drainage diversion well (1), a support plate (12) fixedly connected to the center of the bottom surface of the drainage diversion well (1), a piston cylinder (7) fixedly connected to the center of the top surface of the support plate (12), a piston (9) slidably connected to the inner wall of the piston cylinder (7), a telescopic rod (10) fixedly connected to the center of the top surface of the piston (9), a grid plate (4) fixedly connected to the top of the telescopic rod (10), a filter cage (3) fixedly connected to the bottom edge of the grid plate (4), and several filters opened on the side of the filter cage (3). The filter hole (11) is slidably connected to the inner wall of the drainage diversion well (1) on the side wall of the filter cage (3). An air inlet one-way valve (8) is fixedly connected to one side of the bottom of the piston cylinder (7). A press exhaust valve (5) is fixedly connected to the middle of the grid plate (4). A handle (6) is fixedly connected to the pressing head of the press exhaust valve (5). A connecting hole is opened in the middle of the telescopic rod (10). The bottom end of the connecting hole passes through the piston (9) and communicates with the inner wall of the piston cylinder (7). The top of the connecting hole is connected to the input end of the press exhaust valve (5). The air inlet one-way valve (8) opens one-way into the piston cylinder (7).

2. The road bridge embankment pavement drainage filter structure according to claim 1, characterized in that: The size of the grating plate (4) is adapted to the size of the inner wall of the mating groove (2), and the thickness of the grating plate (4) is adapted to the depth of the inner wall of the mating groove (2).

3. The road bridge embankment pavement drainage filter structure according to claim 2, characterized in that: The depth of the filter cage (3) is adapted to the depth of the inner wall of the drainage diversion well (1), and the outer wall of the filter cage (3) is fully fitted with the inner wall of the drainage diversion well (1).

4. The road bridge embankment pavement drainage filter structure according to claim 3, characterized by: The height of the piston cylinder (7) is adapted to the length of the telescopic rod (10), and the height of the piston cylinder (7) is less than the height of the drainage diversion well (1) and the filter cage (3).

5. The road bridge embankment pavement drainage filter structure according to claim 4, characterized by: The grating plate (4) is fitted with the mating groove (2), and both the grating plate (4) and the filter cage (3) are made of lightweight materials.

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