CN112832349A

CN112832349A - Highway drainage device

Info

Publication number: CN112832349A
Application number: CN202110167821.4A
Authority: CN
Inventors: 李彦伟; 王辉辉; 苏鹏; 郭超; 马晋
Original assignee: Shanxi Traffic Planning Survey Design Institute Co Ltd
Current assignee: Guangxi Wangda Construction Engineering Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-05-25
Anticipated expiration: 2041-01-29
Also published as: CN112832349B

Abstract

The invention discloses a road drainage device which comprises a device box, wherein a first cavity and a second cavity are arranged inside the device box, one side of the device box is communicated with a water pipe, water inlet mechanisms are arranged at the top of the water pipe at equal intervals in sequence, and a water suction mechanism is arranged at the top of the water pipe and positioned in the middle of each two groups of the water inlet mechanisms. The invention can utilize the gravity of rainwater to drive the third piston to descend, the descending of the third piston can ensure that each mechanism and parts are mutually matched, no power equipment is needed for auxiliary drainage, the use amount of the power equipment is effectively reduced, not only are power resources saved, but also the production of power equipment manufacturers is reduced, the consumption of materials is reduced, the resources are saved, the environment is protected, meanwhile, the water discharged by the device box can effectively wash the inside of the groove, the groove can be cleaned without additional cleaning equipment, and the resources are effectively utilized.

Description

Highway drainage device

Technical Field

The invention relates to the field of road administration, in particular to a road drainage device.

Background

Road transportation is the most flexible and convenient transportation mode in the current stage of China, and with the development of road construction, the influence of road drainage on roads is increasingly prominent; the accumulated water on the road can reduce the friction between the vehicle running at high speed and the ground, thereby causing the phenomenon of side length of braking distance, having potential safety hazard and being not beneficial to ensuring the safe running of the vehicle; in addition, when a vehicle passes through a water accumulation road section at a high speed, a water accumulation area pressed by tires of the vehicle forms water mist which is sprayed on subsequent vehicles, so that the sight of drivers of the subsequent vehicles is blocked, the subsequent vehicles cannot normally run, and the driving danger is increased, therefore, when a road is built, the drainage facilities of the subsequent vehicles are generally required to be effectively designed.

The existing road drainage device generally only depends on a pipeline, and a floor drain is buried at the ground opening of the pipeline, but when the rainfall is overlarge, the floor drain cannot meet the overlarge drainage amount, so that the electric drainage equipment needs to be used for auxiliary drainage, but the electric drainage equipment needs larger power to perform auxiliary drainage when drainage is performed, so that the electric power resource can be greatly wasted after long-time work, materials can also be greatly wasted during the production of the electric drainage equipment, the waste and the loss of the resources are caused, and the environmental protection property is greatly reduced.

Disclosure of Invention

The present invention is directed to a road drainage device to solve the problems set forth in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a highway drainage device comprises a device box, wherein a first cavity and a second cavity are arranged inside the device box, one side of the device box is communicated with a water pipe, water inlet mechanisms are sequentially arranged at equal intervals on the top of the water pipe, a water absorbing mechanism is arranged at the position, located between every two groups of water inlet mechanisms, of the top of the water pipe, the inside of the water pipe is hinged with a first rotating shaft penetrating into the second cavity through a pin shaft, a spiral plate is welded and connected to the outer side of the first rotating shaft inside the water pipe, a second rotating shaft is hinged and connected to the upper portion of the first rotating shaft inside the second cavity through a pin shaft, a second gear is fixedly connected to the outer portion of the second rotating shaft, a first gear is fixedly connected to one side, far away from the spiral plate, of the outer portion of the first rotating shaft through a one-way bearing, the first gear is meshed with the second gear, a second piston is arranged inside the first cavity, the outer wall of the second piston is in sealing contact with the inner wall of the first cavity, the second piston is fixedly connected with a fixed plate penetrating into the second cavity, teeth are arranged on the front surface of the fixed plate, a third gear is fixedly connected to the middle position outside the second rotating shaft and is meshed with the teeth, a third piston is fixedly connected to the bottom of the fixed plate, the outer wall of the third piston is in sealing contact with the inner wall of the second cavity, a third spring is fixedly connected to the bottom of the third piston, the bottom of the third spring is welded to the bottom end of the inner wall of the second cavity, a water outlet hole is formed in the outer wall of the device box and located outside the second cavity, baffles are arranged at two ends of the inner wall of the water outlet hole in a sealing mode through a pin shaft, a fourth spring is welded to the outer side of the device box, and one end of the fourth spring is welded to the outer side of the baffles, a second pipeline communicated to the inside of the first cavity is arranged at the top of the device box, a second suction pipe communicated to the inside of the first cavity is arranged at one side of the device box, the other end of the second suction pipe is communicated with the second cavity, and second one-way valves are arranged in the suction pipe and the second pipeline;

the water inlet mechanism comprises a water inlet pipe positioned at the top of the water pipe, the bottom of the water inlet pipe is communicated with the top of the water pipe, a through groove is formed in the inner wall of the water inlet pipe, an annular block is connected to the inside of the through groove in a sliding mode, a water inlet hole is formed in the top of the annular block, a top rod penetrating to the outside of the water inlet pipe is fixedly connected to the inside, positioned in the water inlet hole, of the top of the annular block, the bottom of the top rod is in intermittent fit with the outer end of the spiral plate, a first spring is connected to the outer wall of the top rod in a welding mode;

the water suction mechanism comprises a water suction pipe positioned at the top of the water pipe, the bottom of the water suction pipe is communicated with the top of the water pipe, a first piston is arranged inside the water suction pipe, the outer wall of the first piston is in sealing contact with the inner wall of the water suction pipe, an installation rod is fixedly connected to the bottom of the first piston, the bottom of the installation rod is in intermittent fit with the outer end of the spiral plate, a fixed block is welded and connected to the inner wall of the water suction pipe above the first piston, a second spring is welded and connected to the bottom of the fixed block, the bottom of the second spring is fixedly connected with the top of the first piston, a first pipeline communicated with the outside of the water suction pipe is arranged at the top end inside the water suction pipe, a first suction pipe is arranged on one side of the water suction pipe, one end of the first suction pipe penetrates through the inside of the water suction pipe and is positioned above the first piston, and the other end of the first suction pipe penetrates through the inside of, the first suction pipe and the first pipeline are internally provided with first one-way valves.

Preferably, a stop block is arranged on one side of the inner wall of the second cavity and matched with the third piston.

Preferably, a through hole communicated to the inside of the second cavity is formed in the middle of the bottom of the device box.

Preferably, a groove is formed in the inner wall of the second cavity below the baffle, and a fifth spring is welded to the bottom of the inner wall of the groove.

Preferably, the top of the fifth spring is welded and connected with a moving block, one side of the top of the moving block is welded and connected with a clamping block, and the bottom of the baffle is provided with a clamping groove meshed with the clamping block.

Preferably, the upper end face and the lower end face of the baffle are inclined planes, one end of each inclined plane, facing the fourth spring, is lower than the other end of each inclined plane, the longitudinal section of each clamping block is in a right trapezoid shape, the inclined sides of the clamping blocks are meshed with the clamping grooves, and the hinge point of the baffle and the water outlet hole is lower than the bottom surface of each clamping block.

Preferably, the gap between the outer end of the spiral plate and the inner wall of the water pipe is 1-2 cm.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, rainwater can flow into the water pipe through the arranged water inlet mechanism when raining, and then flows into the top of the third piston in the device box from the inside of the water pipe, the third piston can gradually descend as the rainwater on the third piston slowly changes, and the third piston drives the fixing plate to descend, so that the third gear can drive the second rotating shaft and the second gear to rotate under the action of tooth descending, and a certain gear ratio exists between the first gear and the second gear, so that when the second gear rotates slowly, the first gear can rotate at a higher speed to further drive the first rotating shaft and the spiral plate to rotate, and the spiral plate can drive stones in the water pipe to flow into the device box, so that the influence of the stones in the water pipe on water flow is avoided;

(2) according to the invention, the second piston can be driven to descend by descending the arranged fixing plate, so that the space formed by the top of the second piston and the inside of the first cavity is gradually enlarged, and at the moment, the second one-way valve in the second suction pipe is opened, so that the pressure in the second cavity is reduced, therefore, water flow can flow in more quickly;

(3) according to the invention, the third spring can be gradually compressed by descending the arranged third piston, the moving block and the clamping block can be driven to move downwards after the third spring descends to a certain length, so that the clamping block is gradually separated from the clamping groove, at the moment, the baffle is in an inclined state under the action of the fourth spring, water flow in the second cavity can be completely discharged into the groove on the road side, the interior of the groove can be effectively washed due to the large discharged water flow, the water outlet is prevented from being blocked by stones in the groove, the groove can be cleaned without additional cleaning equipment, and resources are effectively utilized;

(4) according to the invention, rainwater can be collected through the device box and the water pipe, the third piston is driven to descend by utilizing the gravity of the rainwater, each mechanism and parts can be matched with each other by the descending of the third piston, so that water flow is quickly drained, the drainage effect is better, meanwhile, no power equipment is needed for auxiliary drainage, the use amount of the power equipment is effectively reduced, the power resource is saved, the production capacity of a power equipment manufacturer is reduced, the consumption of materials is reduced, the resource is saved, and the environment is protected.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the water inlet mechanism of the present invention;

FIG. 3 is a schematic structural view of a water absorbing mechanism according to the present invention;

fig. 4 is an enlarged view of the present invention a.

In the figure: 1. a device case; 101. a first cavity; 102. a second cavity; 2. a water pipe; 3. a water inlet mechanism; 301. a water inlet pipe; 302. a through groove; 303. a ring block; 304. a water inlet hole; 305. a top rod; 306. a first spring; 4. a water absorbing mechanism; 401. a suction pipe; 402. a first piston; 403. mounting a rod; 404. a fixed block; 405. a second spring; 406. a first suction duct; 407. a first conduit; 408. a first check valve; 5. a first rotating shaft; 6. a spiral plate; 7. a second rotating shaft; 8. a first gear; 9. a second gear; 10. a second piston; 11. a fixing plate; 12. teeth; 13. a third gear; 14. a third piston; 15. a stopper; 16. a third spring; 17. a through hole; 18. a water outlet hole; 19. a baffle plate; 20. a fourth spring; 21. a groove; 22. a fifth spring; 23. a moving block; 24. a clamping block; 25. a card slot; 26. a second conduit; 27. a second suction duct; 28. a second one-way valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: a highway drainage device comprises a device box 1, wherein a first cavity 101 and a second cavity 102 are arranged inside the device box 1, one side of the device box 1 is communicated with a water pipe 2, water inlet mechanisms 3 are sequentially and equally arranged at the top of the water pipe 2, a water absorbing mechanism 4 is arranged at the top of the water pipe 2 and positioned in the middle of every two groups of water inlet mechanisms 3, the inside of the water pipe 2 is hinged with a first rotating shaft 5 penetrating into the second cavity 102 through a pin shaft, the outer side of the first rotating shaft 5 inside the water pipe 2 is welded and connected with a spiral plate 6, a second rotating shaft 7 is hinged and connected above the first rotating shaft 5 inside the second cavity 102 through a pin shaft, a second gear 9 is fixedly connected to the outside of the second rotating shaft 7, a first gear 8 is fixedly connected to one side, far away from the spiral plate 6, of the outside of the first rotating shaft 5 through a one-way bearing, and the first gear 8 is meshed with the second gear, a second piston 10 is arranged in the first cavity 101, the outer wall of the second piston 10 is in sealing contact with the inner wall of the first cavity 101, a fixing plate 11 penetrating into the second cavity 102 is fixedly connected to the second piston 10, teeth 12 are arranged on the front surface of the fixing plate 11, a third gear 13 is fixedly connected to the middle position outside the second rotating shaft 7, the third gear 13 is meshed with the teeth 12, a third piston 14 is fixedly connected to the bottom of the fixing plate 11, the outer wall of the third piston 14 is in sealing contact with the inner wall of the second cavity 102, a third spring 16 is fixedly connected to the bottom of the third piston 14, the bottom of the third spring 16 is welded to the bottom end of the inner wall of the second cavity 102, a water outlet hole 18 is arranged on the outer side of the outer wall of the device box 1 and located outside the second cavity 102, baffle plates 19 are arranged at two ends of the inner wall of the water outlet hole 18 in a sealing mode through a pin shaft, a fourth spring 20 is welded to the, one end of the fourth spring 20 is welded with the outer side of the baffle plate 19, the top of the device box 1 is provided with a second pipeline 26 communicated with the interior of the first cavity 101, one side of the device box 1 is provided with a second suction pipe 27 communicated with the interior of the first cavity 101, the other end of the second suction pipe 27 is communicated with the second cavity 102, and the second suction pipe 27 and the second pipeline 26 are both internally provided with a second one-way valve 28;

the water inlet mechanism 3 comprises a water inlet pipe 301 positioned at the top of the water pipe 2, the bottom of the water inlet pipe 301 is communicated with the top of the water pipe 2, a through groove 302 is formed in the inner wall of the water inlet pipe 301, an annular block 303 is connected to the inside of the through groove 302 in a sliding mode, a water inlet hole 304 is formed in the top of the annular block 303, a push rod 305 penetrating to the outside of the water inlet pipe 301 is fixedly connected to the inside of the annular block 303, the bottom of the push rod 305 is in intermittent fit with the outer end of the spiral plate 6, a first spring 306 is connected to the outer wall of the push rod 305 in a welding mode, and the other end of the first spring 306 is;

the water suction mechanism 4 comprises a water suction pipe 401 positioned at the top of the water pipe 2, the bottom of the water suction pipe 401 is communicated with the top of the water pipe 2, a first piston 402 is arranged inside the water suction pipe 401, the outer wall of the first piston 402 is in sealing contact with the inner wall of the water suction pipe 401, the bottom of the first piston 402 is fixedly connected with a mounting rod 403, the bottom of the mounting rod 403 is in intermittent fit with the outer end of the spiral plate 6, a fixing block 404 is welded and connected above the first piston 402 on the inner wall of the water suction pipe 401, a second spring 405 is welded and connected with the bottom of the fixing block 404, the bottom of the second spring 405 is fixedly connected with the top of the first piston 402, a first pipeline 407 communicated with the outside of the water suction pipe 401 is arranged at the top end inside the water suction pipe 401, a first suction pipe 406 is arranged on one side of the water suction pipe 401, one end of the first suction pipe 406 penetrates through to the inside, the other end of the first suction pipe 406 penetrates the inside of the suction pipe 401 at a position below the first piston 402, and the first suction pipe 406 and the first pipe 407 are both provided with a first check valve 408 inside.

According to the invention, the second piston 10 can be driven to descend by descending the arranged fixing plate 11, so that the space formed by the top of the second piston 10 and the inside of the first cavity 101 is gradually enlarged, at the moment, the second one-way valve 28 in the second suction pipe 27 is opened, so that the pressure in the second cavity 102 is reduced, therefore, water can flow in more quickly, meanwhile, the water absorption mechanism 4 absorbs water in a small range by the same principle, and the water absorption mechanism are matched, so that the water can flow in the device box 1 more quickly.

Referring to fig. 1, a stopper 15 is disposed on one side of the inner wall of the second cavity 102, and the stopper 15 is engaged with the third piston 14.

The road drainage device is characterized in that the third spring 16 is still in a compressed state when the third spring 16 is stopped and stopped by the stop block 15, so that the third spring 16 does not have enough force to move upwards when water source on the top of the third piston 14 is continuously added.

Referring to fig. 1, a through hole 17 communicating with the inside of the second cavity 102 is formed at a middle position of the bottom of the device case 1.

The road drainage device can make part of water remained in the groove 21 flow out of the device box 1 through the arranged through hole 17.

Please refer to fig. 4, a groove 21 is disposed below the baffle plate 19 on the inner wall of the second cavity 102, a fifth spring 22 is welded to the bottom of the inner wall of the groove 21, a moving block 23 is welded to the top of the fifth spring 22, a clamping block 24 is welded to one side of the top of the moving block 23, a clamping groove 25 engaged with the clamping block 24 is disposed at the bottom of the baffle plate 19, the upper and lower end surfaces of the baffle plate 19 are inclined surfaces, one end of the inclined surface facing the fourth spring 20 is lower than the other end of the inclined surface, the longitudinal section of the clamping block 24 is a right trapezoid, the inclined surface of the clamping block 24 is engaged with the clamping groove 25, and the hinge point of the baffle plate 19 and the water outlet.

The road drainage device is meshed with the clamping groove 25 through the clamping block 24, so that the baffle 19 is convenient to block, meanwhile, after the water outlet hole 18 is opened and flow discharge is started, the weight of water flow in the second cavity 102 is gradually reduced, at the moment, the third spring 16 can drive the third piston 14 to move upwards again, at the moment, the second check valve 28 in the second suction pipe 27 is closed, the second check valve 28 in the second pipeline 26 is opened, so that the pressure in the device box 1 is kept balanced, because the hinge point of the baffle 19 and the water outlet hole 18 is lower than the bottom surface of the baffle 15, when the third piston 14 moves to the bottom of the baffle 15 to stop, one side of the third piston 14 just abuts against the middle position of one side of the baffle 19, the upper end and the lower end of the baffle 19 which are hinged are just balanced, so that the baffle 19 abuts against the water outlet hole 18, when the baffle 19 gradually moves back, can make fourth spring 20 slowly compress, and then be convenient for fourth spring 20's next work, the fixture block 24 that the top is the inclined plane can make things convenient for baffle 19 to resume the normal position simultaneously, avoids baffle 19 unable recovery normal position.

Please refer to fig. 1, the gap between the outer end of the spiral plate 6 and the inner wall of the water pipe 2 is 1-2 cm.

This kind of highway drainage device has certain gap through the 6 outer ends of the spiral board that set up and the inner wall of water pipe 2, avoids can't making rivers pass through fast when rivers are too big, and the result of use is better.

The working principle is as follows: when the device is applied, the water pipe 2 is embedded at the bottom of the road, the top of the water inlet mechanism 3 is flush with the top of the road, the water absorbing mechanism 4 is slightly lower than the water inlet mechanism 3, so that the water absorbing mechanism 4 can be embedded in the road, the device box 1 is placed on one side of the road, the water outlet hole 18 is aligned with a groove beside the road, when raining, rainwater can flow into the water pipe 2 from the inside of the water inlet pipe 301 and then flow into the top of a third piston 14 in the device box 1 from the inside of the water pipe 2, the rainwater on the third piston 14 slowly changes to enable the third piston 14 to gradually descend, the third piston 14 drives the fixing plate 11 to descend, so that under the descending effect of the teeth 12, the third gear 13 can drive the second rotating shaft 7 and the second gear 9 to rotate, and a certain gear ratio exists between the first gear 8 and the second gear 9, therefore, when the second gear 9 rotates slowly, the first gear 8 can rotate at a faster speed, and further drives the first rotating shaft 5 and the spiral plate 6 to rotate, the spiral plate 6 not only can drive stones inside the water pipe 2 to flow into the device box 1, so as to prevent the stones inside the water pipe 2 from influencing water flow, but also can intermittently jack up the ejector rod 305 and the mounting rod 403 when rotating, when the ejector rod 305 moves upwards, garbage at the top end inside the water inlet pipe 301 can be ejected, so as to prevent the garbage from blocking the water inlet pipe 301, meanwhile, the fixing plate 11 descends to drive the second piston 10 to descend, so that a space formed by the top of the second piston 10 and the inside of the first cavity 101 is gradually enlarged, at the moment, the second one-way valve 28 inside the second suction pipe 27 is opened, so that the pressure inside the second cavity 102 is reduced, and therefore, water flow can flow in more rapidly, meanwhile, the mounting rod 403 in the water absorbing mechanism 4 moves upwards to absorb water in a small range according to the same principle, and the water absorbing mechanism and the mounting rod are matched, so that water can flow into the device box 1 more quickly, meanwhile, the third piston 14 descends to enable the third spring 16 to be compressed gradually, the third spring 16 descends to a certain length to drive the moving block 23 and the clamping block 24 to move downwards, the clamping block 24 is further separated from the clamping groove 25 gradually, at the moment, under the action of the fourth spring 20, the baffle plate 19 is in an inclined state, the water in the second cavity 102 can be discharged into the grooves on the road side completely, the discharged water flow is large, the inside of the grooves can be effectively washed, water outlets can be prevented from being blocked by stones in the grooves, the grooves can be cleaned without additional cleaning equipment, and resources are effectively utilized.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A highway drainage device comprises a device box (1) and is characterized in that a first cavity (101) and a second cavity (102) are arranged inside the device box (1), one side of the device box (1) is communicated with a water pipe (2), water inlet mechanisms (3) are sequentially arranged at equal intervals on the top of the water pipe (2), a water absorbing mechanism (4) is arranged at the middle position of each two groups of the water inlet mechanisms (3) on the top of the water pipe (2), a first rotating shaft (5) penetrating into the second cavity (102) is hinged and connected inside the water pipe (2) through a pin shaft, a spiral plate (6) is welded and connected on the outer side of the first rotating shaft (5) inside the water pipe (2), a second rotating shaft (7) is hinged and connected above the first rotating shaft (5) inside the second cavity (102) through a pin shaft, and a second gear (9) is fixedly connected to the outer portion of the second rotating shaft (7), one side, far away from the spiral plate (6), of the outer portion of the first rotating shaft (5) is fixedly connected with a first gear (8) through a one-way bearing, the first gear (8) is meshed with a second gear (9), a second piston (10) is arranged inside the first cavity (101), the outer wall of the second piston (10) is in sealing contact with the inner wall of the first cavity (101), the fixed connection of the second piston (10) penetrates through a fixing plate (11) inside the second cavity (102), teeth (12) are arranged on the front surface of the fixing plate (11), a third gear (13) is fixedly connected to the middle position of the outer portion of the second rotating shaft (7), the third gear (13) is meshed with the teeth (12), a third piston (14) is fixedly connected to the bottom of the fixing plate (11), the outer wall of the third piston (14) is in sealing contact with the inner wall of the second cavity (102), and the bottom of the third piston (14) is fixedly connected with a third spring (16), the bottom of the third spring (16) is welded and connected with the bottom end of the inner wall of the second cavity (102), the outer wall of the device box (1) is positioned outside the second cavity (102) and is provided with a water outlet hole (18), two ends of the inner wall of the water outlet hole (18) are provided with a baffle (19) through a pin shaft seal, the outer side of the device box (1) is welded and connected with a fourth spring (20), one end of the fourth spring (20) is welded and connected with the outer side of the baffle (19), the top of the device box (1) is provided with a second pipeline (26) communicated to the inside of the first cavity (101), one side of the device box (1) is provided with a second suction pipe (27) communicated to the inside of the first cavity (101), the other end of the second suction pipe (27) is communicated with the second cavity (102), and the second suction pipe (27) and the inside of the second pipeline (26) are provided with a second check (ii) a

The water inlet mechanism (3) comprises a water inlet pipe (301) positioned at the top of a water pipe (2), the bottom of the water inlet pipe (301) is communicated with the top of the water pipe (2), a through groove (302) is formed in the inner wall of the water inlet pipe (301), a ring block (303) is connected to the inside of the through groove (302) in a sliding mode, a water inlet hole (304) is formed in the top of the ring block (303), a top rod (305) penetrating to the outside of the water inlet pipe (301) is fixedly connected to the inside, positioned at the water inlet hole (304), of the top of the ring block (303), the bottom of the top rod (305) is in intermittent fit with the outer end of a spiral plate (6), a first spring (306) is connected to the outer wall of the top rod (305) in a welding mode, and the other end of the first spring;

the water absorption mechanism (4) comprises a water absorption pipe (401) positioned at the top of the water pipe (2), the bottom of the water absorption pipe (401) is communicated with the top of the water pipe (2), a first piston (402) is arranged inside the water absorption pipe (401), the outer wall of the first piston (402) is in sealing contact with the inner wall of the water absorption pipe (401), the bottom of the first piston (402) is fixedly connected with an installation rod (403), the bottom of the installation rod (403) is in intermittent fit with the outer end of the spiral plate (6), a fixed block (404) is welded and connected above the first piston (402) on the inner wall of the water absorption pipe (401), a second spring (405) is welded and connected to the bottom of the fixed block (404), the bottom of the second spring (405) is fixedly connected with the top of the first piston (402), and a first pipeline (407) communicated with the outside of the water absorption pipe (401) is arranged at the top of the inside of the water absorption pipe (401), one side of the water suction pipe (401) is provided with a first suction pipe (406), one end of the first suction pipe (406) penetrates through the water suction pipe (401) and is located at the position above the first piston (402), the other end of the first suction pipe (406) penetrates through the water suction pipe (401) and is located at the position below the first piston (402), and a first check valve (408) is arranged inside each of the first suction pipe (406) and the first pipeline (407).

2. A road drainage device as claimed in claim 1, wherein: a stop block (15) is arranged on one side of the inner wall of the second cavity (102), and the stop block (15) is matched with the third piston (14).

3. A road drainage device as claimed in claim 1, wherein: a through hole (17) communicated to the interior of the second cavity (102) is formed in the middle of the bottom of the device box (1).

4. A road drainage device as claimed in claim 1, wherein: a groove (21) is formed in the inner wall of the second cavity (102) and located below the baffle (19), and a fifth spring (22) is connected to the bottom of the inner wall of the groove (21) in a welded mode.

5. A road drainage device as claimed in claim 4, wherein: the top of the fifth spring (22) is connected with a moving block (23) in a welded mode, one side of the top of the moving block (23) is connected with a clamping block (24) in a welded mode, and the bottom of the baffle plate (19) is provided with a clamping groove (25) meshed with the clamping block (24).

6. A road drainage device as claimed in claim 5, wherein: the upper end face and the lower end face of the baffle plate (19) are inclined planes, one end of each inclined plane, facing the fourth spring (20), is lower than the other end of each inclined plane, the longitudinal section of each clamping block (24) is in a right trapezoid shape, the inclined sides of the clamping blocks (24) are meshed with the clamping grooves (25), and the hinge point of the baffle plate (19) and the water outlet hole (18) is lower than the bottom surface of the corresponding clamping block (15).

7. A road drainage device as claimed in claim 1, wherein: the gap between the outer end of the spiral plate (6) and the inner wall of the water pipe (2) is 1-2 cm.