A bridge deck runoff diversion device

Abstract

The present invention relates to a bridge deck runoff diversion device, comprising a first shell body, wherein a first drainage port and a second drainage port are respectively provided on the first shell body from left to right, a vertical pipe is arranged in the first drainage port, and the first drainage pipe and the second drainage pipe are respectively fixed at the lower ends of the first drainage port and the second drainage port, a clearance hole is arranged on the right end face of the second drainage pipe, a rotating block is hinged in the clearance hole, a water receiving dish is fixed at the left end of the rotating block, a vertical plate is arranged on the first shell body, a through groove penetrating the left and right end faces is arranged at the lower end of the vertical plate, the left end of the water receiving dish is always placed in the through groove, when the vertical plate is located at the lowest end of its moving path, the left end of the water receiving dish can swing freely in the through groove, and after the vertical plate moves upward to the highest end, the lower end face of the through groove can make the water receiving dish swing upward to block the second drainage port; the present invention enables rainwater carrying garbage on the bridge deck to be discharged into the sedimentation tank through the second drainage port within a period of time at the beginning of rainfall, and switches to the first drainage port to directly discharge the rainwater after the rainwater cleans the bridge deck.

Description

Technical Field

[0001] The invention relates to the field of bridge drainage, in particular to a bridge deck runoff diversion device. Background Art

[0002] In order to protect water sources and prevent garbage above bridges from being discharged into rivers or lakes through rainwater, sedimentation tanks are usually set up under or on both sides of the bridge, so that the rainwater outlet on the bridge deck is connected to the sedimentation tank through a drainage pipe to prevent rainwater from carrying garbage directly into the river. However, in extreme weather with heavy rainfall, the sedimentation tank will be filled up, causing it to lose its original function and easily causing the water on the bridge surface to be unable to be discharged normally, increasing the traffic risk of the bridge;

[0003] In order to deal with the above-mentioned problems, the prior art has provided two high and low drainage outlets, so that the drainage outlet at the lower position is connected to the sedimentation tank, and the drainage outlet at the higher position is directly connected to the river, so that when the accumulated water on the road rises to the high-position drainage outlet during heavy rainfall, it can be directly discharged through the high-position drainage outlet. For example, a bridge rainwater grating well structure disclosed in announcement number CN202644394U can effectively solve the problem of accumulated water on the bridge, but the low-position drainage outlet is always draining water, and there is still the problem that the sedimentation tank is easily filled with water. Once the sedimentation tank is filled with water, it will lose its diversion function. If the accumulated water in the sedimentation tank is not cleaned up in time, the subsequent garbage and impurities on the bridge deck will be directly discharged into the river through the direct discharge pipe. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention adopts a bridge deck runoff diversion device to solve the problem in the prior art that the sedimentation tank is easily filled with water during heavy rainfall and continuous rainfall.

[0005] The technical solution is a bridge deck runoff diversion device, comprising a first shell, the first shell is a rectangular block, the first shell is provided with a first drain port and a second drain port penetrating the upper and lower end surfaces from left to right, a vertical pipe that can move up and down is arranged in the first drain port, the lower ends of the first drain port and the second drain port are respectively fixed with the first drain pipe and the second drain pipe, a clearance hole is arranged on the right end surface of the second drain pipe, a hinge shaft with the axis horizontally placed forward and backward is arranged in the clearance hole, a rotating block is sleeved on the outer side of the hinge shaft, a water receiving dish is fixed to the left end of the rotating block through a connecting rod, and a vertical pipe that can move up and down is arranged in the first drain port, a first drain pipe and a second drain pipe are respectively fixed at the lower ends of the first drain port and the second drain port, a clearance hole is arranged on the right end surface of the second drain pipe, a hinge shaft with the axis horizontally placed forward and backward is arranged in the clearance hole, a rotating block is sleeved on the outer side of the hinge shaft, a water receiving dish is fixed to the left end of the rotating block through a connecting rod, and a water receiving dish is fixed to the left end of the hinge shaft and the rotating block. A torsion spring is provided, and in the absence of external force, the torsion spring makes the opening of the water receiving dish face upward and be located directly below the second drain outlet. The water receiving dish swings upward to block the second drain outlet. A vertical plate is provided on the first shell body between the first drain outlet and the second drain outlet. The vertical plate penetrates the upper and lower end surfaces of the first shell body and can move up and down. A through groove penetrating the left and right end surfaces is provided at the lower end of the vertical plate. The left end of the water receiving dish is always placed in the through groove. When the vertical plate is located at the lowest end of its moving path, the left end of the water receiving dish can swing freely in the through groove. After the vertical plate moves upward to the highest end, the lower end surface of the through groove can make the water receiving dish swing upward to block the second drain outlet.

[0006] When the water receiving dish swings downward along the hinge axis once, the vertical pipe can move downward along the first drain port for a certain distance. When the vertical pipe moves downward until the upper end surface is not higher than the upper end surface of the first shell, the vertical plate moves upward to the uppermost end.

[0007] The front and rear ends of the first shell are respectively fixed with a second shell on the front and rear sides of the first drain outlet, each second shell is respectively provided with a slider that can move up and down, each second shell is respectively provided with a vertical slide groove that runs through the front and rear end surfaces of the first shell, and each slider is respectively fixed with a cross bar, the cross bar is placed in the slide groove on the corresponding side and can move up and down along the slide groove, and the other end of the cross bar is fixedly connected to the vertical pipe. When the cross bar is located at the uppermost end of the slide groove, the upper end of the vertical pipe extends out of the upper end surface of the first shell so that the horizontal height of the upper end surface of the vertical pipe is higher than the upper end surface of the first shell; a first cavity is provided at the right end of the first shell, and a piston plate that can move up and down is arranged in the first cavity. When the water receiving dish swings downward, it can drive the piston plate to move upward, and a ventilation pipe is respectively arranged on the left and right front and rear sides of the upper end of the first cavity, and the two ends of the ventilation pipe are respectively connected with the first cavity and the second shell.

[0008] The communication position of the vent pipe with the first cavity is located above the piston plate, and the communication position with the second shell is located above the slider. The upper end surface of the slider is connected to the inner edge surface of the second shell through a bellows.

[0009] A vertical rod is fixed at the lower end of the piston plate, and the vertical rod passes through the lower end surface of the first shell. A convex block is fixed on the right side of the rotating block, and a horizontal oblong hole is provided on the convex block. The lower end of the vertical rod is hinged to the oblong hole. When the water receiving dish swings downward, the piston plate can be driven to move upward through the vertical rod. A first through hole passing through the upper and lower end surfaces is provided on the piston plate, and a one-way valve is arranged in the first through hole. The one-way valve allows the gas in the cavity below the piston plate to be transported upward only through the first through hole, and vice versa. The gas cannot pass through.

[0010] The second shell upper end surface is provided with a second through hole, and a one-way valve is arranged in the second through hole. The one-way valve allows the gas outside the second shell to enter the second shell cavity through the second through hole, while the gas in the second shell cavity cannot be discharged through the second through hole.

[0011] A third through hole penetrating the upper and lower end surfaces of the first shell is provided between the first drain port and the second drain port, the vertical plate is located in the third through hole and can move up and down, a second cavity is provided on the left side of the third through hole, a pin shaft that can slide left and right is provided in the second cavity, the left end of the pin shaft is connected to the left end surface of the second cavity by a compression spring, a countersunk hole is provided on the left end surface of the vertical plate, when the vertical plate is located at the lowest end of its moving path, the pin shaft can be always placed in the countersunk hole under the action of the compression spring to limit the vertical plate from moving upward;

[0012] The lower end of the first drain outlet is in the shape of a funnel with an opening that gradually closes. A vertical hole connected to the second cavity is provided on the funnel-shaped inclined surface of the first drain outlet. A sliding rod is provided in the vertical hole. The upper end of the sliding rod always extends out of the vertical hole. A sink groove is provided on the upper end surface of the pin shaft. The lower end surface of the sliding rod and the left end surface of the sink groove are inclined surfaces. When the sliding rod moves downward, the inclined surface can push the pin shaft to the left to disengage from the sink hole.

[0013] A compression spring is fixed on the upper end of the vertical plate, and the other end of the compression spring is fixed in the third through hole. The compression spring always gives the vertical plate an upward thrust.

[0014] A filter plate is arranged at the upper opening of the vertical pipe.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention makes the initial height of the vertical pipe higher than the first shell, so that the initial water flow can only be discharged into the sedimentation tank through the second drainage port. After the water receiving dish receives the rainwater, the change of gravity drives the piston plate to move up and down reciprocatingly. The piston plate uses a one-way valve to control the airflow direction to make the vertical pipe gradually move downward until it is lower than the upper end surface of the shell, and the water receiving dish closes the second drainage port, completing the switching of the drainage pipeline, so that the rainwater carrying the bridge surface garbage is discharged into the sedimentation tank through the second drainage port within a period of time at the beginning of rainfall, avoiding pollution of the river water source, and switching to the first drainage port to directly discharge the rainwater after the rainwater washes the bridge surface clean, which can more effectively prevent the sedimentation tank from being filled with continuously discharged rainwater, greatly reducing the number of cleaning times of the sedimentation tank;

[0017] 2. The present invention can change the total water receiving times or total water saving of the water receiving dish by changing the size of the water receiving dish or the size of the piston plate and the first cavity, and calculate according to different drainage intervals or drainage area areas. Compared with the prior art that requires cleaning the sedimentation tank after each rainfall, the reset operation of the device is simple and fast, and more practical;

[0018] 3. The working state of the water receiving dish is controlled by moving the vertical plate up and down. When the vertical plate is at the bottom, the water receiving dish provides a power source. When the power times meet the requirements, the vertical plate can be reversely controlled by the pin shaft to change the working state of the water receiving dish again. The structure is ingenious, does not require electronic control and does not require high-precision coordination, and can be more suitable for complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the present invention.

[0020] Figure 2 It is a front cross-sectional view of the present invention.

[0021] Figure 3 For the present invention Figure 2 A is an enlarged view of the middle image.

[0022] Figure 4 For the present invention Figure 2 Enlarged view of B.

[0023] Figure 5 It is a front cross-sectional view of the second shell of the present invention.

[0024] Figure 6 This is a front cross-sectional view of the vertical pipe of the present invention after it moves to the lowermost end. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0026] Depend on Figures 1 to 6The present invention comprises a first shell 1, which is a rectangular block. The first shell 1 is provided with a first drain port 2 and a second drain port 3 penetrating the upper and lower end surfaces from left to right, respectively. A vertical pipe 4 capable of moving up and down is arranged in the first drain port 2. A first drain pipe 5 and a second drain pipe 6 are fixed to the lower ends of the first drain port and the second drain port, respectively. A clearance hole is provided in the right end surface of the second drain pipe 6. A hinge shaft 7 with the axis horizontally placed front and back is arranged in the clearance hole. A rotating block 8 is sleeved on the outer side of the rotating block 8. A water receiving dish 9 is fixed to the left end of the rotating block 8 through a connecting rod. A torsion spring is arranged between the rotating block 8 and the hinge shaft 7. When no external force is applied, the rotating block 8 is provided with a rotating block 8. Under, the torsion spring makes the water receiving dish 9 open upward and located directly below the second drain port 3. The water receiving dish 9 swings upward to block the second drain port 3. A vertical plate 10 is provided on the first shell 1 between the first drain port 2 and the second drain port 3. The vertical plate 10 penetrates the upper and lower end surfaces of the first shell 1 and can move up and down. A through groove 11 penetrating the left and right end surfaces is provided at the lower end of the vertical plate 10. The left end of the water receiving dish 9 is always placed in the through groove 11. When the vertical plate 10 is located at the lowest end of its moving path, the left end of the water receiving dish 9 can swing freely in the through groove 11. After the vertical plate 10 moves upward to the uppermost end, the lower end surface of the through groove 11 can make the water receiving dish 9 swing upward to block the second drain port 3.

[0027] When the water receiving dish 9 swings downward once along the hinge shaft 7, the vertical pipe 4 can move downward along the first drain port 2 for a certain distance. When the vertical pipe 4 moves downward until the upper end surface is not higher than the upper end surface of the first shell 1, the vertical plate 10 moves upward to the uppermost end.

[0028] A second shell 12 is fixed to the front and rear ends of the first shell 1 located at the front and rear sides of the first drain port 2, and each second shell 12 has a slider 13 that can move up and down. Each second shell 12 is provided with a vertical slide groove 14 that runs through the front and rear end surfaces of the first shell 1, and each slider 13 is fixed with a cross bar 15. The cross bar 15 is placed in the slide groove 14 on the corresponding side and can move up and down along the slide groove 14. The other end of the cross bar 15 is fixedly connected to the vertical pipe 4. When the cross bar 15 is located at the uppermost end of the slide groove 14, the upper end of the vertical pipe 4 extends out of the upper end surface of the first shell 1 so that the horizontal height of the upper end surface of the vertical pipe 4 is higher than the upper end surface of the first shell 1; a first cavity 16 is provided at the right end of the first shell 1, and a piston plate 17 that can move up and down is arranged in the first cavity 16. When the water receiving dish 9 swings downward, it can drive the piston plate 17 to move upward. A ventilation pipe 18 is respectively arranged on the left and right front and rear sides of the upper end of the first cavity 16, and the two ends of the ventilation pipe 18 are connected to the first cavity 16 and the second shell 12 respectively.

[0029] The communication position of the vent pipe 18 with the first cavity 16 is located above the piston plate 17, and the communication position with the second shell 12 is located above the slider 13. The upper end surface of the slider 13 is connected to the inner edge surface of the second shell 12 through a bellows.

[0030] A vertical rod 19 is fixed to the lower end of the piston plate 17, and the vertical rod 19 passes through the lower end surface of the first shell 1. A protrusion 20 is fixed to the right side of the rotating block 8, and a horizontal oblong hole 21 is provided on the protrusion 20. The lower end of the vertical rod 19 is hinged to the oblong hole 21. When the water receiving dish 9 swings downward, the piston plate 17 can be driven to move upward through the vertical rod 19; a first through hole 22 that passes through the upper and lower end surfaces is provided on the piston plate 17, and a one-way valve is arranged in the first through hole 22. The one-way valve allows the gas in the cavity below the piston plate 17 to be transported upward only through the first through hole 22, and vice versa. The gas cannot pass through.

[0031] A second through hole 23 is formed on the upper end surface of the second shell, and a one-way valve is arranged in the second through hole 23. The one-way valve allows the gas outside the second shell 12 to enter the cavity of the second shell 12 through the second through hole 23, while the gas in the cavity of the second shell 12 cannot be discharged through the second through hole 23.

[0032] A third through hole 24 penetrating the upper and lower end surfaces of the first shell 1 is provided between the first drain port 2 and the second drain port 3. The vertical plate 10 is located in the third through hole 24 and can move up and down. A second cavity 25 is provided on the left side of the third through hole 24. A pin 26 that can slide left and right is provided in the second cavity 25. The left end of the pin 26 is connected to the left end surface of the second cavity 25 through a compression spring. A countersunk hole 27 is provided on the left end surface of the vertical plate 10. When the vertical plate 10 is at the lowest end of its moving path, the pin 26 can be always placed in the countersunk hole 27 under the action of the compression spring to limit the vertical plate 10 from moving upward.

[0033] The lower end of the first drain outlet 2 is in the shape of a funnel with an opening that gradually closes. A vertical hole 28 connected to the second cavity 25 is provided on the funnel-shaped inclined surface of the first drain outlet 2. A slide rod 29 is provided in the vertical hole 28. The upper end of the slide rod 29 always extends out of the vertical hole 28. A sink groove 30 is provided on the upper end surface of the pin shaft 26. The lower end surface of the slide rod 29 and the left end surface of the sink groove 30 are inclined surfaces. When the slide rod 29 moves downward, it can push the pin shaft 26 to the left through the inclined surface to disengage from the sink hole 27.

[0034] A compression spring is fixed to the upper end of the vertical plate 10 , and the other end of the compression spring is fixed in the third through hole 24 . The compression spring always gives an upward thrust to the vertical plate 10 .

[0035] A filter plate 31 is disposed at the upper opening of the vertical pipe 4 .

[0036] It is worth mentioning that in order to maintain the relative position between the vertical pipe 4 and the first drain port 2, the outer wall of the vertical pipe 4 and the inner wall of the first drain port 2 slide in contact with each other and there is a certain friction force, and the torsion force of the torsion spring between the hinge shaft 7 and the rotating block 8 is greater than the sum of the friction force between the piston plate 17 and the first cavity 16 and the friction force between the vertical pipe 4 and the inner wall of the first drain port 2;

[0037] The diameter of the second drain pipe 6 is larger than the diameter of the second drain port 3, so that the water receiving dish 9 and the vertical plate 10 are both placed inside the second drain pipe 6;

[0038] In order to facilitate resetting, the right end surface of the pin 26 is an inclined surface, and the vertical plate 10 can push the pin 26 to the left through the inclined surface when moving downward;

[0039] In order to facilitate later maintenance, an operation hand hole communicating with the upper end surface of the first housing 1 is opened on the upper end surface of the first cavity 16, and a sealing cover plate is arranged above the operation hand hole to always block the operation hand hole.

[0040] In order to prevent the upper end of the vertical plate 10 from extending out of the shell 1 and affecting traffic when the vertical plate 10 is at the lowest end of its moving path, the vertical plate 10 mentioned above is at the lowest end of its moving path, which means that the upper end surface of the vertical plate 10 does not exceed the upper end surface of the first shell 1. Figure 2 The position of the riser 10 is shown.

[0041] When the present invention is used, the first shell 1 is firstly embedded in both sides of the bridge, so that the upper end surface of the first shell 1 is flush with the bridge road surface, the first drainage pipe 5 is connected to the bridge direct drainage pipeline, and the second drainage pipe 6 is connected to the sedimentation tank for collecting rainwater from the sedimentation tank bridge. The vertical pipe 4 is located at the uppermost end of its moving path. In rainy weather, since the horizontal height of the upper end surface of the vertical pipe 4 is higher than the upper end surface of the first shell 1, rainwater will first enter the second drainage port 3 and then be collected by the water receiving dish 9. As the rainwater in the water receiving dish 9 gradually increases, the rainwater and the water receiving dish 9 are collected. 9 overcomes the torsion force of the torsion spring and swings downward. The piston plate 17 is supported by the upward force of the protrusion 20 and the vertical rod 19 and moves upward along the first cavity 16. The air above the piston plate 17 enters the second housing 12 above the slider 13 through the vent pipe 18. Due to the one-way valve, the second through hole 23 can only take in air into the second housing but cannot let out air. The gas entering the second housing 12 can only overcome the friction between the vertical pipe 4 and the inner wall of the first drain port 2 to make the slider 13 and the vertical pipe 4 move downward synchronously for a certain distance. After a certain angle, the accumulated water in the water receiving dish 9 is discharged with reduced gravity, so that the water receiving dish 9 is swung upward and reset again under the action of the torsion spring. Since the gas can be supplied to the cavity above the piston plate 17 through the one-way valve on the first through hole 22, the piston plate 17 can slide downward and reset normally during the reset process of the water receiving dish 9. The outer wall of the vertical pipe 4 and the inner wall of the first drain port 2 have a certain friction force, which can limit the vertical pipe 4 and the slider 13 from moving upward and keep the position unchanged. The water receiving dish 9 collects the rainwater discharged through the second drain port 3 again, and the above steps are repeated. After the water receiving dish 9 is swung downward and reset several times, the vertical pipe 4 moves downward until it contacts the slide bar 29. The downward movement of the vertical pipe 4 can squeeze the pin 26 to the left through the inclined surface of the lower end of the slide bar 29 to make it move to the left until the pin 26 is separated from the sink 27. After the pin 26 is separated from the sink 27, the vertical plate 10 can move upward under the action of the compression spring, and through the lower end surface of the through groove 11, the water receiving dish is swung upward and buckled on the lower end surface of the first shell 1, so that the second drain port 3 is blocked, and the water flow can only be discharged to the bridge direct discharge pipeline through the vertical pipe 4 and the first drain port 2;

[0042] After experiencing rainy weather, the entire device needs to be reset manually. The operator can manually open the one-way valve on the second through hole 23, and then manually pull up the vertical pipe 4 to move the vertical pipe 4 upward to the uppermost end. The airflow enters the second shell 12 through the second through hole 23 to supplement the positive pressure generated when the bellows is compressed. Finally, the vertical plate 10 is first reset downward by pressing downward until the pin shaft 26 enters the sink groove 27 under the action of the compression spring to re-limit the upward movement of the vertical plate 10.

[0043] In the present invention, the initial height of the vertical pipe 4 is higher than the first shell 1, so that the initial water flow can only be discharged into the sedimentation tank through the second drain port 3. After the water receiving dish 9 receives the rainwater, the change in gravity drives the piston plate 17 to move up and down reciprocatingly. The first through hole 22 restricts the air flow direction so that a certain amount of air can be injected into the second shell 12 through the vent hole 18 every time the piston plate 17 moves up and down for one cycle, so that the slider 13 can drive the vertical pipe 4 to move downward synchronously, and realize constant power input, until the vertical pipe 4 moves to the lowest end, and the lower end of the slide rod 29 squeezes the pin 26 to the left through the inclined surface. The pin shaft 26 is separated from the sink 27 to complete the release of the vertical plate 10. After being released, the vertical plate 10 can drive the water receiving dish 9 upward through the lower end surface of the through groove 11 under the action of the compression spring to snap on the lower end surface of the shell 1 to block the second drain port 3, completing the switching of the drainage pipeline. In the first period of rainfall, the rainwater carrying the bridge surface garbage is discharged into the sedimentation tank through the second drain port 3 to avoid polluting the river water source. After the rainwater washes the bridge surface clean, it switches to the first drain port 2 to directly discharge the rainwater, which can more effectively prevent the sedimentation tank from being filled with continuously discharged rainwater, greatly reducing the number of times the sedimentation tank is cleaned;

[0044] The present invention can change the total number of water collection times or the total water saving of the water collecting dish 9 by changing the size of the water collecting dish 9 or the size of the piston plate 17 and the first cavity 16, and calculate according to different drainage intervals or drainage area areas. Compared with the prior art that requires cleaning the sedimentation tank after each rainfall, the reset operation of the device is simple, fast and more practical. The working state of the water collecting dish is controlled by the up and down movement of the vertical plate. When the vertical plate is located at the bottom, the water collecting dish provides a power source. After the power frequency meets the requirement, the vertical plate can be reversely controlled by the pin shaft to change the working state of the water collecting dish again. The structure is ingenious, does not require electronic control or high-precision coordination, and can be more suitable for complex environments.

Claims

1. A bridge deck runoff diversion device, comprising a first shell (1), characterized in that: The first shell (1) is a rectangular block. The first shell (1) is provided with a first drain port (2) and a second drain port (3) penetrating the upper and lower end surfaces from left to right. A vertical pipe (4) capable of moving up and down is arranged in the first drain port (2). A first drain pipe (5) and a second drain pipe (6) are fixed to the lower ends of the first drain port and the second drain port, respectively. A clearance hole is provided in the right end surface of the second drain pipe (6). A hinge shaft (7) with its axis horizontally arranged forward and backward is arranged in the clearance hole. A rotating block (8) is sleeved on the outer side of the hinge shaft (7). A water receiving dish (9) is fixed to the left end of the rotating block (8) via a connecting rod. A torsion spring is arranged between the hinge shaft (7) and the rotating block (8). When no external force is applied, the torsion spring causes the water receiving dish (9) to move. The opening faces upward and is located directly below the second drain outlet (3). The water receiving dish (9) can swing upward to block the second drain outlet (3). A vertical plate (10) is provided on the first shell (1) between the first drain outlet (2) and the second drain outlet (3). The vertical plate (10) penetrates the upper and lower end surfaces of the first shell (1) and can move up and down. A through groove (11) penetrating the left and right end surfaces is provided at the lower end of the vertical plate (10). The left end of the water receiving dish (9) is always placed in the through groove (11). When the vertical plate (10) is located at the lowest end of its moving path, the left end of the water receiving dish (9) can swing freely in the through groove (11). After the vertical plate (10) moves upward to the highest end, the lower end surface of the through groove (11) can enable the water receiving dish (9) to swing upward to block the second drain outlet (3). When the water receiving dish (9) swings downward once along the hinge shaft (7), the vertical pipe (4) can move downward along the first drain outlet (2) for a certain distance. When the vertical pipe (4) moves downward until the upper end surface is not higher than the upper end surface of the first shell (1), the vertical plate (10) moves upward to the uppermost end.

2. A bridge deck runoff diversion device according to claim 1, characterized in that: The front and rear ends of the first shell (1) are located at the front and rear sides of the first drain outlet (2), and a second shell (12) is fixed thereon respectively. Each second shell (12) has a slider (13) that can move up and down. Each second shell (12) is provided with a vertical slide groove (14) that runs through the front and rear end surfaces of the first shell (1). Each slider (13) is fixed with a cross bar (15). The cross bar (15) is placed in the slide groove (14) on the corresponding side and can move up and down along the slide groove (14). The other end of the cross bar (15) is fixedly connected to the vertical pipe (4). When the cross bar (15) is in the position When at the uppermost end of the slide groove (14), the upper end of the vertical tube (4) extends out of the upper end surface of the first shell (1) so that the upper end surface of the vertical tube (4) is higher than the upper end surface of the first shell (1); a first cavity (16) is provided at the right end of the first shell (1), and a piston plate (17) capable of moving up and down is provided in the first cavity (16). When the water receiving dish (9) swings downward, it can drive the piston plate (17) to move upward. A ventilation pipe (18) is respectively provided on the left and right sides of the upper end of the first cavity (16), and the two ends of the ventilation pipe (18) are respectively connected to the first cavity (16) and the second shell (12).

3. A bridge deck runoff diversion device according to claim 2, characterized in that: The communication position of the vent pipe (18) with the first cavity (16) is located above the piston plate (17), and the communication position with the second shell (12) is located above the slider (13); the upper end surface of the slider (13) and the inner edge surface of the second shell (12) are connected via a bellows.

4. A bridge deck runoff diversion device according to claim 2, characterized in that: A vertical rod (19) is fixed to the lower end of the piston plate (17), and the vertical rod (19) passes through the lower end surface of the first housing (1). A convex block (20) is fixed to the right side of the rotating block (8), and a horizontal oblong hole (21) is formed on the convex block (20). The lower end of the vertical rod (19) is hinged to the oblong hole (21). When the water receiving dish (9) swings downward, the piston plate (17) can be driven to move upward through the vertical rod (19). The piston plate (17) is provided with a first through hole (22) passing through the upper and lower end surfaces. A one-way valve is arranged in the first through hole (22). The one-way valve allows the gas in the cavity below the piston plate (17) to be transported upward only through the first through hole (22), and vice versa.

5. The bridge deck runoff diversion device according to claim 2, characterized in that: The second shell (12) has a second through hole (23) on its upper end surface, and a one-way valve is arranged in the second through hole (23). The one-way valve allows gas outside the second shell (12) to enter the second shell (12) cavity through the second through hole (23), while gas inside the second shell (12) cavity cannot be discharged through the second through hole (23).

6. A bridge deck runoff diversion device according to claim 1, characterized in that: A third through hole (24) penetrating the upper and lower end surfaces of the first shell (1) is provided between the first drain port (2) and the second drain port (3); the vertical plate (10) is located in the third through hole (24) and can move up and down; a second cavity (25) is provided on the left side of the third through hole (24); a pin shaft (26) that can slide left and right is provided in the second cavity (25); the left end of the pin shaft (26) is connected to the left end surface of the second cavity (25) through a compression spring; a countersunk hole (27) is provided on the left end surface of the vertical plate (10); when the vertical plate (10) is located at the lowest end of its moving path, the pin shaft (26) can be always placed in the countersunk hole (27) under the action of the compression spring to limit the vertical plate (10) from moving upward; The lower end of the first drainage port (2) is in the shape of a funnel with an opening gradually closing. A vertical hole (28) communicating with the second cavity (25) is provided on the funnel-shaped inclined surface of the first drainage port (2). A sliding rod (29) is provided in the vertical hole (28). The upper end of the sliding rod (29) always extends out of the vertical hole (28). A sink groove (30) is provided on the upper end surface of the pin shaft (26). The lower end surface of the sliding rod (29) and the left end surface of the sink groove (30) are inclined surfaces. When the sliding rod (29) moves downward, the inclined surface can push the pin shaft (26) to the left to disengage from the sink hole (27).

7. A bridge deck runoff diversion device according to claim 1, characterized in that: A compression spring is fixed to the upper end of the vertical plate (10), and the other end of the compression spring is fixed in the third through hole (24). The compression spring always gives the vertical plate (10) an upward thrust.

8. The bridge deck runoff diversion device according to claim 1, characterized in that: A filter plate (31) is provided at the upper opening of the vertical pipe (4).

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