Hidden type water collecting and draining system for bridge floor

Abstract

The invention discloses a bridge floor hidden type water collection and drainage system which is provided with a cantilever beam and divides a flower bed and a drainage ditch through a retaining wall. A first drainage pipe is arranged in the drainage ditch, and a drainage cover is arranged at the top of the drainage ditch; a self-cleaning assembly is arranged, and a floating plate and a cleaning rod are driven by accumulated water buoyancy to clean impurities among the grids; the collecting assembly comprises an impeller, a first filter cartridge and a second filter cartridge, and rainwater is filtered in a classified mode; a control assembly is arranged and is matched with the second filter cartridge to adjust the distance between the grids; according to the system, the aesthetic property and ecological property of a bridge floor are improved through the hidden design, the self-cleaning function effectively prevents the grids from being blocked, the maintenance cost is reduced, the efficient filtering performance is ensured through graded filtering and filter cylinder rotating adjustment, and the adaptability and the filtering effect of a drainage system are enhanced by adjusting the grid distance; the problems that a traditional bridge floor drainage system is large in occupied space, prone to blockage and poor in filtering effect are solved.

Description

Technical Field

[0001] The invention belongs to the field of bridge construction and relates to a bridge deck hidden water collection and drainage system. Background Art

[0002] With the continuous advancement of urbanization, pedestrian bridges, as an important component of urban transportation, are receiving increasing attention for their design and construction. Pedestrian bridges must not only meet basic traffic flow requirements but also take into account multiple factors such as aesthetics, safety, and environmental adaptability. Among the many design requirements, drainage design is a key component in ensuring the structural safety and service life of pedestrian bridges. Traditional drainage designs often use open or shallow trenches, which not only affect the aesthetics of the bridge but can also cause problems such as water accumulation and freezing due to poor drainage, further impacting the bridge's service life and pedestrian safety.

[0003] Currently, most bridge drainage designs rely on surface drainage or shallow drainage systems. These systems, when faced with heavy or sustained rainfall, may suffer from insufficient drainage capacity, leading to waterlogging. Furthermore, these drainage systems are often separated from the overall structural design of the bridge, lacking integrated considerations. This leads to numerous deficiencies in practical application. For example, drain outlets are easily clogged by debris, drainage efficiency is low due to poorly designed drainage paths, and drainage system maintenance is difficult. These issues not only increase maintenance costs but can also pose safety risks in extreme weather conditions.

[0004] Specifically, traditional drainage structures often occupy a large space on the bridge deck, which not only affects the overall aesthetics of the bridge deck, but may also cause certain interference and safety hazards to the passage of vehicles and pedestrians. Especially on urban bridges, exposed drainage facilities easily become accumulation points for garbage and debris, further exacerbating the problem of poor drainage. Secondly, traditional drainage systems lack effective self-cleaning mechanisms. During rainfall, impurities such as mud, sand, and leaves carried by rainwater can easily clog the drain outlets, resulting in reduced drainage efficiency and even causing water accumulation. This not only affects the normal use of the bridge, but may also cause damage to the bridge structure, such as accelerating concrete corrosion and affecting the stability of the bridge deck pavement layer. In addition, traditional drainage systems also have limitations in filtering impurities in rainwater. A single filtering structure often has difficulty coping with impurities of different particle sizes and properties, resulting in poor filtration effect. Pollutants such as suspended matter and particulate matter in rainwater may be directly discharged into the water body, causing clogging of the drainage pipes.

[0005] In response to the above problems, although some improved bridge deck drainage systems have appeared on the market, these systems are often complex in structure, have high maintenance costs, and are difficult to achieve intelligent adjustment and efficient filtration. For example, some systems use electric or hydraulically driven cleaning devices, which improve cleaning efficiency but increase the system's energy consumption and maintenance difficulty; other systems improve the filtration effect by increasing the number of filtration levels, but this increases the drainage resistance and affects the drainage speed. Summary of the Invention

[0006] In view of this, the present invention provides a bridge deck hidden water collection and drainage system to solve the problems of traditional bridge deck drainage systems such as large space occupation, easy clogging, and poor filtering effect, resulting in poor drainage effect.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A bridge deck concealed water collection and drainage system includes a cantilever beam disposed on one side of a steel box beam, a retaining wall disposed on the top of the cantilever beam, and the retaining wall divides the cantilever beam into a flower bed and a drainage ditch. A first drainage pipe is disposed in the drainage ditch, and a plurality of second rectangular openings are formed on the top of the first drainage pipe. A drainage cover is disposed in the second rectangular opening, and a plurality of grilles are disposed in the drainage cover to provide external protection.

[0009] A self-cleaning assembly is provided on the drain cover. The self-cleaning assembly includes a floating plate and a plurality of cleaning rods. The floating plate is driven upward by the buoyancy of the accumulated water, thereby driving the cleaning rods upward to clean impurities between adjacent grilles.

[0010] The collecting assembly is disposed in the first drain pipe and includes an inclined impeller, a first filter cartridge, and a second filter cartridge. The first filter cartridge and the second filter cartridge are used to grade and filter impurities in the rainwater. The rainwater drives the impeller to rotate and adjust the filtering positions of the first filter cartridge and the second filter cartridge.

[0011] The control component is arranged on the drain cover and is used in conjunction with the second filter cartridge. The rotation of the second filter cartridge drives the grille to move, thereby adjusting the distance between two adjacent grilles.

[0012] Furthermore, a first guide rod is slidingly provided at the four corners of the top of the drain cover, the top ends of the first guide rods are fixedly connected to the floating plate, the bottoms of the two first guide rods on the same side are fixedly provided with the same first connecting rod, and multiple second connecting rods are fixedly provided on the top of the first connecting rod, and the two ends of the cleaning rod are respectively fixedly connected to the corresponding two second connecting rods.

[0013] Furthermore, a first rectangular opening corresponding to the drain cover is opened at the top of the first drain pipe, and an inspection cover is embedded in the first rectangular opening. The bottom of the inspection cover is provided with a rotating shaft through a bearing for tilting and rotating. The impeller is fixed at the bottom end of the rotating shaft, and the first filter cartridge and the second filter cartridge are both fixedly sleeved on the rotating shaft.

[0014] Furthermore, two fixing rods are fixed inside the drain cover, the two groups of grilles in the middle are slidably sleeved on the fixing rods, and the remaining multiple grilles are fixedly sleeved on the fixing rods. A positioning block for limiting the grilles is fixed on the inner wall of one side of the drain cover, and a first spring is sleeved on the outer wall of the fixing rod. The two ends of the first spring are respectively in contact with the corresponding two grilles through spring seats.

[0015] Furthermore, the control component includes four sliding rods that slide through the bottom of the drain seat. The top of the sliding rod is fixed with a connecting block that cooperates with the grille. The top of the connecting block is provided with a trapezoidal groove, and the four sliding rods are all used in conjunction with the protrusion.

[0016] Furthermore, a connecting strip is fixedly provided at the bottom of the drain seat, a rectangular hole is opened on one side of the connecting strip, a wedge is slidably provided in the rectangular hole, a second guide rod is slidably provided through one side of the connecting strip, the second guide rod is fixed in the wedge, a second spring is sleeved on the outer wall of the second guide rod, and the two ends of the second spring respectively contact the inner wall of one side of the wedge and one side of the connecting strip through the spring seat, and the bottom ends of the four sliding rods are fixed with the same bottom plate used in conjunction with the wedge.

[0017] Furthermore, a plurality of evenly distributed protrusions are fixedly provided on the outer wall of the top end of the second filter cartridge, and the protrusions are used in conjunction with the wedge blocks.

[0018] Furthermore, a guide portion is provided in the drain seat.

[0019] Furthermore, a plurality of guide plates for guiding rainwater are fixedly provided in the first drain pipe, a plurality of reinforcing plates are fixedly provided on the top wall of the first drain pipe, and the reinforcing plates and the drain cover are staggered with each other.

[0020] Furthermore, the bottom of the cantilever beam is fixedly connected to the same second drainage pipe through multiple brackets, and the flower bed is connected to the second drainage pipe through a connecting pipe.

[0021] The beneficial effects of the present invention are:

[0022] 1. The hidden water collection and drainage system of the bridge deck disclosed in the present invention divides the flower bed and the drainage ditch by the retaining wall, which not only realizes the drainage function, but also gives the bridge deck a green landscape function, improves the aesthetics and ecology of the bridge deck, and effectively avoids the occupation of the bridge deck space and visual interference of traditional drainage facilities, making the bridge deck more tidy and beautiful.

[0023] 2. The bridge deck hidden water collection and drainage system disclosed in the present invention, by setting a self-cleaning component, uses the buoyancy of accumulated water to drive the floating plate to move upward, and then drives the cleaning rod to clean the impurities between the grilles, effectively preventing the grilles from being blocked, ensuring the unobstructed flow of the drainage system, reducing the frequency of manual cleaning and the difficulty of maintenance, reducing maintenance costs, and improving drainage efficiency.

[0024] 3. The bridge deck hidden water collection and drainage system disclosed by the present invention has a first filter cartridge and a second filter cartridge in the collection assembly that perform graded filtration on impurities in rainwater, thereby improving the filtration effect. At the same time, rainwater is used to drive the impeller to rotate and adjust the filtration position of the filter cartridge to avoid local filter clogging and failure, thereby ensuring that efficient filtration performance can be maintained under different rainfall intensities.

[0025] 4. The bridge deck hidden water collection and drainage system disclosed in the present invention uses a control component in conjunction with the second filter cartridge, so that the rotation of the second filter cartridge can drive the movement of the grille, thereby adjusting the spacing between adjacent grilles. This not only improves the adaptability of the drainage system, but also can increase the grille spacing to speed up drainage when needed, or increase the spacing to enhance the filtering effect when there are more impurities.

[0026] 5. In the bridge deck hidden water collection and drainage system disclosed in the present invention, the guide plate arranged in the first drainage pipe effectively guides the flow direction of rainwater and increases the impact force of water flow on the impeller. At the same time, the setting of the reinforcement plate enhances the structural strength of the drainage cover, ensures its stability when subjected to rainwater impact, and improves the reliability and durability of the drainage system.

[0027] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0029] Figure 1 The three-dimensional structure diagram of the hidden water collection and drainage system on the bridge deck of the present invention Figure 1 ;

[0030] Figure 2 The three-dimensional structure diagram of the hidden water collection and drainage system on the bridge deck of the present invention Figure 2 ;

[0031] Figure 3 For the present invention Figure 2Schematic diagram of the first drainage pipe structure;

[0032] Figure 4 For the present invention Figure 1 Cross-sectional view of the middle drain seat;

[0033] Figure 5 For the present invention Figure 1 Schematic diagram of the structure of the middle wedge and the lifting plate;

[0034] Figure 6 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the middle drain cover;

[0035] Figure 7 For the present invention Figure 2 Cross-sectional view of the middle drain cover;

[0036] Figure 8 For the present invention Figure 2 Schematic diagram of the collection barrel installation structure.

[0037] Reference numerals: 1, steel box girder; 2, cantilever beam; 3, retaining wall; 4, flower bed; 5, drainage ditch; 6, inspection cover; 7, first drainage pipe; 8, drainage cover; 801, positioning block; 802, fixing rod; 803, first spring; 81, grille; 82, floating plate; 83, first guide rod; 84, first connecting rod; 85, second connecting rod; 86, cleaning rod; 9, bracket; 10, second drainage pipe; 11, connecting pipe; 1 2. Drain seat; 121. Guide portion; 13. Reinforcement plate; 14. Guide plate; 15. First rectangular opening; 16. Second rectangular opening; 17. Sliding rod; 18. Connecting block; 181. Trapezoidal groove; 19. Bottom plate; 20. Connecting strip; 21. Rectangular hole; 22. Wedge; 23. Second guide rod; 24. Second spring; 25. Rotating shaft; 26. Impeller; 27. First filter cartridge; 28. Second filter cartridge; 29. ​​Bump. DETAILED DESCRIPTION

[0038] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0039] like Figure 1-8 The bridge deck hidden water collection and drainage system shown is mainly composed of a steel box girder 1, a cantilever beam 2, a retaining wall 3, a flower bed 4, a drainage ditch 5, an inspection cover 6, a first drainage pipe 7, a drainage cover 8, a self-cleaning component, a collection component and a control component.

[0040] The cantilever beam 2 is fixed to one side of the steel box beam 1. Its top is divided into a flower bed 4 and a drainage ditch 5 by a retaining wall 3. The flower bed 4 is used for growing green plants, and the drainage ditch 5 collects rainwater from the bridge deck. A first drainage pipe 7 is installed within the drainage ditch 5. The pipe is a DN300 galvanized steel pipe embedded within the cantilever beam 2. The top of the first drainage pipe 7 has multiple second rectangular openings 16, each of which is embedded with a drainage cover 8. The drainage cover 8 is equipped with multiple grilles 81 to prevent pedestrians from falling into the drainage system.

[0041] The self-cleaning assembly is provided on the drain cover 8 and primarily comprises a floating plate 82, a first guide rod 83, a first connecting rod 84, a second connecting rod 85, and a cleaning rod 86. Specifically, first guide rods 83 are provided slidingly through the four corners of the top portion of the drain cover 8. The top end of the first guide rod 83 is fixedly connected to the floating plate 82. The first guide rod 83 is in the shape of a stepped shaft, with its larger end contacting the top portion of the drain cover 8 to position the floating plate 82, thereby creating a drainage gap between the floating plate 82 and the drain cover 8. The bottoms of the two first guide rods 83 on the same side are fixedly connected to the same first connecting rod 84. The tops of the first connecting rods 84 are fixedly connected to multiple second connecting rods 85. The ends of the cleaning rod 86 are fixedly connected to the corresponding two second connecting rods 85.

[0042] The drainage cover 8 is made of 20mm thick 304 stainless steel plate, with Φ16mm through holes at the four corners of the top, and is equipped with a first guide rod 83 to form a vertical guide mechanism. The float plate 82 is composed of a polyethylene foam board wrapped in a 304 stainless steel shell, and the density is controlled below 0.6g / cm³. When the depth of accumulated water reaches 30mm, the float plate generates a buoyancy of 120N, which drives the first connecting rod 84 to rise through the four first guide rods 83. The first connecting rod 84 is a φ10mm solid stainless steel rod, and the cleaning rod is a nylon brush bundle with a diameter of 8mm. During the rising stroke, impurities between adjacent grilles 81 can be cleaned to prevent impurities from clogging the grilles 81. For example, soft impurities such as leaves and plastic films can be removed, which can automatically improve drainage efficiency.

[0043] The collection assembly is located within the first drain pipe 7 and primarily comprises an impeller 26, a first filter cartridge 27, and a second filter cartridge 28. The top of the first drain pipe 7 features a first rectangular opening 15 measuring 400 x 200 mm, corresponding to the drain cover 8. This opening houses a removable 304 stainless steel inspection cover 6. The bottom of the inspection cover 6 features a rotating shaft 25, which is tilted and rotated via a bearing. The shaft 25 is arranged at a 15° angle to the horizontal. The impeller 26, a five-bladed plastic impeller, is fixedly mounted on the bottom end of the shaft 25. The first filter cartridge 27 and the second filter cartridge 28 are both fixedly mounted on the shaft 25, with the first filter cartridge 27 positioned within the second filter cartridge 28. The first filter cartridge 27 has a larger mesh size than the second filter cartridge 28 to facilitate separation of impurities and soil. The first filter cartridge is made of stainless steel wire mesh, while the second filter cartridge is made of nylon filter cloth.

[0044] When rainwater enters the first drainpipe 7, it strikes the impeller 26, driving it to rotate. The rotation of the impeller 26 drives the rotation of the rotating shaft 25, which in turn drives the rotation of the first and second filter cartridges 27, 28, allowing for adjustment of the filtration position. The first and second filter cartridges 27, 28 perform graded filtration of impurities in the rainwater, with the first filter cartridge 27 filtering larger particles and the second filter cartridge 28 filtering smaller particles. This graded filtration effectively improves filtration efficiency and reduces clogging of the drainage system by impurities.

[0045] The control assembly is arranged on the drain cover 8 and is used in conjunction with the second filter cartridge 28. It mainly includes a sliding rod 17, a connecting block 18, a trapezoidal groove 181, a bottom plate 19, a connecting strip 20, a rectangular hole 21, a wedge 22, a second guide rod 23 and a second spring 24. Two fixed rods 802 are fixedly provided in the drain cover 8. The two groups of grilles 81 located in the middle are slidably mounted on the fixed rods 802, and the remaining multiple grilles 81 are fixedly mounted on the fixed rods 802. A positioning block 801 is fixedly provided on the inner wall of one side of the drain cover 8 to limit the grilles 81. The outer wall of the fixed rod 802 is provided with a first spring 803. The two ends of the first spring 803 respectively contact the corresponding two grilles 81 through spring seats, so that the distance between the corresponding two grilles 81 can be adjusted to facilitate the flow of impurities.

[0046] Four sliding rods 17 are provided on the bottom of the drain seat 12 for sliding movement. A connecting block 18 for use with the grille 81 is fixed to the top of the sliding rod 17. A trapezoidal groove 181 is provided on the top of the connecting block 18. The four sliding rods 17 are used in conjunction with the protrusion 29. A connecting strip 20 is fixed on the bottom of the drain seat 12. A rectangular hole 21 is provided on one side of the connecting strip 20. A wedge 22 is provided for sliding movement in the rectangular hole 21. A second guide rod 23 is provided on one side of the connecting strip 20 for sliding movement. The second guide rod 23 is fixed in the wedge 22. A second spring 24 is provided on the outer wall of the second guide rod 23. The two ends of the second spring 24 respectively contact the inner wall of one side of the wedge 22 and one side of the connecting strip 20 through the spring seat. The bottom ends of the four sliding rods 17 are fixed with a bottom plate 19 for use with the wedge 22.

[0047] The top outer wall of the second filter cartridge 28 is fixed with a plurality of evenly distributed protrusions 29, which are used in conjunction with the wedge block 22. When the second filter cartridge 28 rotates, the protrusions 29 periodically squeeze the wedge block 22, causing the wedge block 22 to slide along the rectangular hole 21 and compress the second spring 24. During the sliding process, the wedge block 22 drives the sliding rod 17 and the connecting block 18 to move upward through the bottom plate 19. During the movement, the connecting block 18 pushes the grille 81 to slide along the fixed rod 802 through the trapezoidal groove 181, thereby adjusting the distance between two adjacent grilles 81. When the protrusion 29 leaves the wedge block 22, the second spring 24 recovers its deformation, pushing the wedge block 22 to return to its original position, and the grille 81 is returned to its original position under the action of the first spring 803. By periodically adjusting the distance between the grilles 81, impurities are effectively prevented from accumulating on the grille 81, thereby improving drainage efficiency.

[0048] Drain seat 12 is provided with a guide portion 121 for directing rainwater, ensuring smooth entry into first drain pipe 7. Multiple guide plates 14 are fixedly mounted within first drain pipe 7 to further guide rainwater, concentrating it and increasing its impact on impeller 26. Multiple reinforcement plates 13 are fixedly mounted on the top wall of first drain pipe 7, offset from drain cover 8 to enhance the structural strength of first drain pipe 7.

[0049] The bottom of the cantilever beam 2 is fixedly connected to the same second drain pipe 10 through multiple brackets 9. The flower bed 4 is connected to the second drain pipe 10 through a connecting pipe 11. When too much water accumulates in the flower bed 4, rainwater enters the second drain pipe 10 through the connecting pipe 11, achieving rapid drainage of rainwater.

[0050] During light rain, rainwater will enter the drain seat 12 through the drain cover 8, then flow into the first filter cartridge 27 for filtration. After filtering out large impurities, it will pass through the second filter cartridge 28 to filter out impurities, and finally be discharged into the municipal drainage system through the first drain pipe 7;

[0051] When the grille 81 on the drain cover 8 is clogged, water will accumulate on the top of the first drain pipe 7, and the floating plate 82 can move upward under the buoyancy of the accumulated water, which can drive the multiple first guide rods 83 to move upward. The upward movement of the first guide rods 83 can drive the first connecting rod 84 to move upward. The upward movement of the first connecting rod 84 can drive the second connecting rod 85 to move upward, thereby driving the cleaning rod 86 to move upward. When the cleaning rod 86 moves upward and passes between two adjacent grilles 81, it can push out impurities on the drain cover 8, thereby preventing further blockage by impurities. When the accumulated water drops, the floating plate 82 can move downward under gravity.

[0052] When the rainfall is heavy, the accumulated water will flow in the first drain pipe 7, and during the flow, it can be guided and gathered by the guide plate 14, and the impeller 26 can be driven to rotate by the water flow. The rotation of the impeller 26 can drive the rotation of the shaft 25, thereby driving the first filter cartridge 27 and the second filter cartridge 28 to rotate and switch the filtering position. In the process of the rotation of the second filter cartridge 28, the protrusion 29 can abut the wedge block 22, so that the wedge block 22 moves in the connecting strip 20 and compresses the second spring 24. In the process of the movement of the wedge block 22, the bottom plate 19 can be pushed upward by the inclined surface, thereby driving the four filter cartridges 27 and the second filter cartridge 28 at the same time. The sliding rod 17 moves upward, and the upward movement of the sliding rod 17 can drive the connecting block 18 to move upward. During the upward movement of the connecting block 18, the corresponding two grilles 81 can be driven to approach each other through the trapezoidal groove 181, thereby increasing the space between the two adjacent grilles 81 so that impurities can fall quickly. When the protrusion 29 moves away from the wedge block 22, the wedge block 22 can be reset and moved under the action of the second spring 24, and the sliding rod 17 can be reset downward under the action of the bottom plate 19, and drive the connecting block 18 to reset downward, and the grille 81 can be reset and moved under the action of the first spring 803.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A bridge deck hidden water collection and drainage system, characterized in that: The invention comprises a cantilever beam (2) arranged on one side of a steel box beam (1), a retaining wall (3) being provided on the top of the cantilever beam (2), the retaining wall (3) being used to divide the inside of the cantilever beam (2) into a flower bed (4) and a drainage ditch (5), a first drainage pipe (7) being provided in the drainage ditch (5), a plurality of second rectangular openings (16) being provided on the top of the first drainage pipe (7), a drainage cover (8) and a drainage seat (12) being provided in the second rectangular openings (16), a plurality of grilles (81) being provided in the drainage cover (8), and the grilles (81) being used for external protection; A self-cleaning assembly is provided on the drain cover (8), and includes a floating plate (82) and a plurality of cleaning rods (86). The floating plate (82) is driven upward by the buoyancy of the accumulated water, thereby driving the cleaning rods (86) to move upward, thereby cleaning impurities between adjacent grilles (81); A collecting assembly is arranged in the first drain pipe (7), comprising an inclined impeller (26), a first filter cartridge (27), and a second filter cartridge (28), wherein the first filter cartridge (27) and the second filter cartridge (28) are used to grade and filter impurities in rainwater, and the impeller (26) is driven to rotate by rainwater to adjust the filtering positions of the first filter cartridge (27) and the second filter cartridge (28); The control assembly is arranged on the drain cover (8) and is used in conjunction with the second filter cartridge (28). The rotation of the second filter cartridge (28) drives the grille (81) to move, thereby adjusting the distance between two adjacent grilles (81).

2. The bridge deck hidden water collection and drainage system according to claim 1, characterized in that: First guide rods (83) are slidably provided at the four corners of the top of the drain cover (8), the top ends of the first guide rods (83) are fixedly connected to the floating plate (82), the bottoms of the two first guide rods (83) on the same side are fixedly provided with a same first connecting rod (84), the tops of the first connecting rods (84) are fixedly provided with a plurality of second connecting rods (85), and the two ends of the cleaning rod (86) are fixedly connected to the corresponding two second connecting rods (85).

3. The bridge deck hidden water collection and drainage system according to claim 2, characterized in that: A first rectangular opening (15) corresponding to the drainage cover (8) is provided at the top of the first drainage pipe (7), an inspection cover (6) is embedded in the first rectangular opening (15), a rotating shaft (25) is provided at the bottom of the inspection cover (6) for tilting and rotating via a bearing, an impeller (26) is fixedly provided at the bottom end of the rotating shaft (25), and a first filter cartridge (27) and a second filter cartridge (28) are both fixedly sleeved on the rotating shaft (25).

4. The bridge deck hidden water collection and drainage system according to claim 1, characterized in that: Two fixing rods (802) are fixedly provided in the drain cover (8), two groups of grilles (81) in the middle are slidably sleeved on the fixing rods (802), and the remaining grilles (81) are fixedly sleeved on the fixing rods (802). A positioning block (801) for limiting the grilles (81) is fixedly provided on the inner wall of one side of the drain cover (8), and a first spring (803) is sleeved on the outer wall of the fixing rod (802). The two ends of the first spring (803) respectively contact the corresponding two grilles (81) through spring seats.

5. The bridge deck hidden water collection and drainage system according to claim 4, characterized in that: The control assembly includes four sliding rods (17) that are slidably disposed on the bottom of the drain seat (12). A connecting block (18) that cooperates with the grille (81) is fixedly disposed on the top of the sliding rod (17). A trapezoidal groove (181) is formed on the top of the connecting block (18). The four sliding rods (17) are all used in conjunction with the protrusion (29).

6. The bridge deck hidden water collection and drainage system according to claim 5, characterized in that: A connecting strip (20) is fixedly provided at the bottom of the drain seat (12), a rectangular hole (21) is opened on one side of the connecting strip (20), a wedge (22) is slidably provided in the rectangular hole (21), a second guide rod (23) is slidably provided through one side of the connecting strip (20), the second guide rod (23) is fixedly provided in the wedge (22), a second spring (24) is sleeved on the outer wall of the second guide rod (23), and the two ends of the second spring (24) are respectively in contact with the inner wall of one side of the wedge (22) and one side of the connecting strip (20) through the spring seat, and the bottom ends of the four sliding rods (17) are fixedly provided with a bottom plate (19) used in conjunction with the wedge (22).

7. The bridge deck hidden water collection and drainage system according to claim 6, characterized in that: A plurality of evenly distributed protrusions (29) are fixedly provided on the outer wall of the top end of the second filter cylinder (28), and the protrusions (29) are used in conjunction with the wedges (22).

8. The bridge deck hidden water collection and drainage system according to claim 7, characterized in that: A guide portion (121) is provided in the drainage seat (12).

9. The bridge deck hidden water collection and drainage system according to claim 1, characterized in that: A plurality of guide plates (14) for guiding rainwater are fixedly provided in the first drainage pipe (7), a plurality of reinforcing plates (13) are fixedly provided on the top wall of the first drainage pipe (7), and the reinforcing plates (13) and the drainage cover (8) are staggered with each other.

10. The bridge deck hidden water collection and drainage system according to any one of claims 1 to 9, characterized in that: The bottom of the cantilever beam (2) is fixedly connected to a second drainage pipe (10) via a plurality of brackets (9), and the inside of the flower bed (4) is connected to the second drainage pipe (10) via a connecting pipe (11).

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