CN113047398A

CN113047398A - Town road drainage system

Info

Publication number: CN113047398A
Application number: CN202011583032.0A
Authority: CN
Inventors: 高增民
Original assignee: Beijing Jiashun Municipal Public Engineering Co ltd
Current assignee: Beijing Jiashun Municipal Public Engineering Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-06-29

Abstract

The utility model relates to a municipal road drainage system, which relates to the field of municipal drainage technology and comprises a drainage well, a drainage cover, a sealing cover and a control assembly, wherein the drainage well is arranged on the road surface, the bottom of the drainage well is provided with a drainage pipeline communicated with a municipal sewage channel, the drainage cover is arranged at the opening position of the top of the drainage well, and the drainage cover is provided with a plurality of drainage holes; the sealing cover is used for sealing the drain hole on the drain cover; when the road surface is in a water accumulation state, the control assembly is used for controlling the sealing cover to open the plurality of water drainage holes on the water drainage cover; when the road surface has no accumulated water, the control assembly is used for controlling the closing cover to close the drain hole on the drain cover. This application has the advantage that can reduce road surface rubbish and get into the drainage shaft.

Description

Town road drainage system

Technical Field

The application relates to the field of municipal drainage technology, in particular to a municipal road drainage system.

Background

The city is at the in-process of design, can in time arrange away the rainwater on the road in order to guarantee in rainy day, and the middle part of road generally can be higher than the both sides of road, and the road both sides can set up the drainage shaft near the ground of curb interval, and in order to guarantee the planarization on road surface, the drainage shaft opening part on the road surface can set up the rainwater grate.

Rainwater grate in the correlation technique can set up more through-hole in order to guarantee drainage efficiency on the rainwater grate to through-hole on these rainwater grates can be in the state of opening always at ordinary times, and rubbish on the road surface can enter into the drain well through the through-hole on the rainwater grate often, can gather more rubbish in the drain well in long-term accumulation, and these rubbish can cause the jam of drain well.

Disclosure of Invention

In order to improve the problem that rubbish on the road surface enters into the drain well easily through the rainwater grate, the application provides a town road drainage system.

The application provides a town road drainage system adopts following technical scheme:

a municipal road drainage system comprises a drainage well, a drainage cover, a sealing cover and a control assembly, wherein the drainage well is arranged on a road surface, the bottom of the drainage well is provided with a drainage pipeline communicated with a municipal sewage channel, the drainage cover is arranged at an opening position at the top of the drainage well, and the drainage cover is provided with a plurality of drainage holes; the sealing cover is used for sealing the drain hole on the drain cover; when the road surface is in a water accumulation state, the control assembly is used for controlling the sealing cover to open the plurality of water drainage holes on the water drainage cover; when the road surface has no accumulated water, the control assembly is used for controlling the closing cover to close the drain hole on the drain cover.

Through adopting above-mentioned technical scheme, when the road surface does not have ponding, the closing cap can be sealed the wash port that the drainage was covered, can avoid outside debris to enter into the drain well as far as this moment, and the control assembly can control the closing cap and make the wash port open when the road surface produced ponding simultaneously to make the ponding on road surface can enter into the drain well smoothly.

Optionally, the sealing cover is arranged in the drainage well under the drainage cover, and a drainage gap is arranged between the sealing cover and the drainage well.

Through adopting above-mentioned technical scheme, reduced the influence of drainage lid to the road surface.

Optionally, the sealing cover includes a cover body and a plurality of plug connectors, and the plurality of plug connectors are respectively in one-to-one correspondence with the plurality of drainage holes; the connector comprises a closing plate mounted on the drainage cover, and when the connector is inserted into the drainage hole, the upper surface of the closing plate is flush with the upper surface of the drainage cover.

Through adopting above-mentioned technical scheme, the closure plate is parallel and level with the upper surface of drainage lid, has increased the planarization on road surface, has avoided storing up rubbish in the drainage lid as far as simultaneously.

Optionally, the control assembly includes a lifting member and a pull-down member, the lifting member includes a mounting bracket fixedly connected to the drain cover, a return spring is disposed between the mounting bracket and the sealing cover, and the sealing cover seals the drain hole under the support of the return spring; the pull-down piece comprises a water bucket, a pull rope is fixedly connected between the water bucket and the cover body, and a drainage pipeline used for pouring accumulated water on the road surface into the water bucket is arranged on the side wall of the road shoulder on the roadside.

By adopting the technical scheme, when no water is accumulated on the road surface, the return spring supports the closing cover, so that the closing cover closes the drain hole on the drainage cover; when the water is accumulated on the road surface, the accumulated water on the road surface enters the bucket through the drainage pipeline, the gravity of the bucket is increased along with the increase of the accumulated water in the bucket, and the bucket drives the sealing cover to move downwards through the pull rope, so that the drain hole is opened.

Optionally, the drainage pipeline comprises a hard pipe and a hose which are mutually communicated, the hard pipe is buried in the ground, one end of the hose is fixedly connected to the side wall of the bucket, the other end of the hose is communicated with the bucket, and the length of the hose is provided with the allowance for the water bucket to descend.

Through adopting above-mentioned technical scheme, hose and cask rigid coupling for water in the drainage pipe can be more accurate enter into the cask.

Optionally, the drainage cover is provided with a first hole, and the closing cover is provided with a second hole aligned with the first hole.

Through adopting above-mentioned technical scheme, like this when ponding on the road surface is less to lead to in the cask unable ponding of accumulating enough to make the closing cap downstream, ponding can enter into in the drainage channel through first hole and second hole.

Optionally, a drain hole is formed in the bucket, and the diameter of the drain hole is smaller than that of the drain pipeline.

Through adopting above-mentioned technical scheme, when overcast and rainy day ended like this, ponding on the road surface disappears, and the drain pipe stops to water injection in the cask this moment, and ponding in the cask is discharged from the connecting hole gradually, and along with the loss of ponding in the cask, the cask is to the pulling force of lid diminishes gradually, and the lid is in the upwards motion gradually that resets at this in-process until the plug connector seals the wash port again.

Optionally, be provided with waste collection device in the drainage shaft, the one end that drainage channel is located the drainage shaft is provided with the filter screen, and waste collection device is including setting up the collection frame in the drainage shaft, has seted up a plurality of holes that leak on the collection frame, and the height of collecting the frame is less than the filter screen.

Through adopting above-mentioned technical scheme, can be blockked by the filter screen and can't enter into the drainage channel after entering into the drainage well to the rubbish that enters into in the drainage well along with ponding, just so can avoid the drainage channel to block as far as, the debris that are blockked in the drainage well simultaneously can subside in collecting the frame.

Optionally, a plurality of water leakage holes are formed in the collecting frame, accumulated water discharge holes communicated with urban drainage pipelines are formed in the side wall of the drainage well, and the accumulated water discharge holes are used for discharging accumulated water in the drainage well below the joint of the drainage channel and the drainage well into the urban sewage pipeline.

By adopting the technical scheme, the accumulated water discharge hole is used for discharging accumulated water in the drainage well below the joint of the drainage channel and the drainage well into the urban sewage pipeline.

Optionally, an organic whole is provided with protruding edge on the collection frame lateral wall, and the rigid coupling has the dead lever on the inner wall of drainage well, and the rigid coupling has the fixed hook on the dead lever, and the rigid coupling has fixed rope on the collection frame, and the rigid coupling has the link on the fixed rope, and the link hook hangs in the fixed hook, and when link hook and fixed hook, the collection frame is in unsettled state

Through adopting above-mentioned technical scheme, be more favorable to the ponding evacuation of drainage well bottom.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the drainage cover, the sealing cover is arranged on the drainage cover, and the control assembly is arranged between the sealing cover and the drainage cover, when no water is accumulated on the road surface, the sealing cover can seal the drainage hole on the drainage cover, so that external sundries can be prevented from entering the drainage well as far as possible, and meanwhile, when the water is accumulated on the road surface, the control assembly can control the sealing cover to open the drainage hole, so that the water accumulated on the road surface can smoothly enter the drainage well;

2. through set up refuse collection device in the drain shaft for the rubbish that enters into in the drain shaft can be concentrated and collected, avoids rubbish to produce the influence to drainage pipe as far as.

Drawings

FIG. 1 is a schematic view showing the configuration of an drainage system on a road surface according to an embodiment of the present invention.

Figure 2 is a side cross-sectional view of a drainage system in an embodiment of the present application.

FIG. 3 is a schematic view showing a connection structure between the drain cover and the closing plate in the embodiment of the present application.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 5 is a partially enlarged schematic view of a portion B in fig. 2.

Fig. 6 is a schematic structural diagram of an outline of a collecting frame in an embodiment of the present application.

Description of reference numerals: 1. a drainage cover; 11. a drain hole; 12. a first hole; 2. a closure cap; 21. a cover body; 211. a second hole; 22. a plug-in unit; 221. a vertical rod; 222. a closing plate; 3. a control component; 31. a lifting member; 311. a mounting frame; 3111. mounting a rod; 3112. mounting a plate; 312. a return spring; 3121. pushing the ring; 32. a pull-down member; 321. a water bucket; 3211. pulling a rope; 3212. connecting holes; 322. a water tank is communicated; 3221. a water inlet hole; 323. a drain pipe; 3231. a first part; 3232. a second section; 4. a pavement; 41. a road shoulder; 411. adding a groove; 42. mounting grooves; 421. installing a frame; 4211. a groove; 5. a drainage well; 51. a drainage channel; 52. fixing grooves; 53. fixing the rod; 531. a fixed hook; 6. a drainage gap; 7. a waste collection device; 71. a collection frame; 711. pulling a rope; 712. a convex edge; 72. a mounting ring; 73. filtering with a screen; 731. an additional ring; 74. hanging a ring; 8. a water accumulation discharge hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses town road drainage system. Referring to fig. 1 and 2, a town road drainage system includes a drainage cover 1, a closure cap 2, a control unit 3, and a drainage well 5 provided at both sides of a road surface 4 near a shoulder 41, and a drainage passage 51 communicating with a city sewage passage is provided on a side wall of the drainage well 5.

Referring to fig. 2 and 3, a plurality of rectangular drain holes 11 are uniformly formed in the drain cover 1, the drain cover 1 is designed to keep the flatness of the road surface 4, and when the rain and sunshine weather occurs, the rain and sunshine on the road surface 4 can enter the drain well 5 through the drain holes 11 in the drain cover 1;

the sealing cover 2 is arranged in the drainage well 5 right below the drainage cover 1, and the sealing cover 2 is arranged for sealing the drainage hole 11 on the drainage cover 1 at ordinary times; the control component 3 is used for controlling the closing cover 2, so that the drainage hole 11 is opened by the drainage cover 1 when the road surface 4 is in a water accumulation state, and the drainage hole 11 is closed when the road surface 4 is in a water accumulation state.

Referring to fig. 4, an annular mounting groove 42 is formed on the road surface 4 where the top edge of the drain well 5 is located. The mounting groove 42 is embedded to be equipped with the annular mounting frame 421 of rectangle, the last border of mounting frame 421 inner peripheral surface offer with the recess 4211 of drainage cover 1 adaptation, the cross section of mounting frame 421 is "L" shape, wears to be equipped with a plurality of fixing bolt on the diapire of recess 4211, fixing bolt passes behind the mounting frame 421 and wears to establish in the ground, and then is fixed in ground with the mounting frame 421. The drainage cover 1 is horizontally arranged in the groove 4211.

Referring to fig. 3 and 4, the closing cap 2 is disposed in parallel just below the closing cap 2, and a drainage gap 6 exists between the closing cap 2 and the inner wall of the drainage well 5. Specifically, the sealing cap 2 includes a cap body 21 and a plurality of plug-in units 22, the plug-in units 22 are disposed on an upper surface of the cap body 21, the plug-in units 22 correspond to the plurality of drainage holes 11 on the drainage cap 1 one by one, the plug-in units 22 are inserted into the drainage holes 11, and the plug-in units 22 are used for sealing the drainage holes 11.

The plug 22 includes a vertical rod 221 and a closing plate 222, the closing plate 222 is parallel to the upper surface of the cover 21, the vertical rod 221 is fixedly connected between the cover 21 and the closing plate 222, the closing plate 222 is adapted to the drainage hole 11, the closing plate 222 is inserted into the drainage hole 11, and the closing plate 222 and the drainage hole 11 are slidably connected.

Referring to fig. 2, the control assembly 3 includes a lift 31 and a pull-down 32. Under the action of the lifting piece 31, the plurality of plug-in pieces 22 on the upper surface of the closing cover 2 are respectively inserted into the plurality of drainage holes 11, and the upper surface of the closing plate 222 is flush with the upper surface of the drainage cover 1.

The pull-down member 32 is provided in order that when water is accumulated on the road surface 4, the pull-down member 32 controls the closing cap 2 to move downward, so that the water discharge hole 11 of the water discharge cap 1 is opened.

Referring to fig. 3, the lifting member 31 includes a mounting bracket 311 and a return spring 312, the mounting bracket 311 being mounted to the lower surface of the drain cover 1; specifically, the mounting bracket 311 includes a mounting bar 3111 and a mounting plate 3112, the mounting bar 3111 is fixed to a lower surface of the drain cover 1, and the mounting bar 3111 is perpendicular to the lower surface of the drain cover 1. A through hole through which the mounting rod 3111 passes is formed in the cover body 21, the mounting rod 3111 passes through the through hole, and the mounting rod 3111 is in sliding connection with the cover body 21 through the through hole; the mounting plate 3112 is fixedly connected to the bottom end of the mounting bar 3111, the mounting plate 3112 is perpendicular to the mounting bar 3111, the return spring 312 is sleeved on the periphery of the mounting bar 3111, and the return spring 312 is disposed between the mounting plate 3112 and the lower surface of the cover 21.

The top end of the return spring 312 is provided with a pushing ring 3121, the mounting rod 3111 is sleeved with the pushing ring 3121, a sliding connection plate is arranged between the pushing ring 3121 and the mounting rod 3111, and the purpose of the setting of the pushing ring 3121 is to increase the connection area between the return spring 312 and the cover 21.

Referring to fig. 2 and 4, an additional groove 411 is formed on the side surface of the shoulder 41; the pull-down part 32 comprises a water bucket 321, a water passing tank 322 and a drain pipe 323, the water bucket 321 is arranged right below the cover body 21, the opening of the water bucket 321 is upward, a plurality of pull ropes 3211 are fixedly connected between the water bucket 321 and the cover body 21, the water passing tank 322 is fixedly connected in the loading groove 411, and one surface of the water passing tank 322 facing the road is provided with a water inlet 3221;

the water drainage pipe 323 is embedded in the ground right below the water drainage tank 322, one end of the water drainage pipe 323 is communicated with the water drainage tank 322, the other end of the water drainage tank 322 is fixedly connected to the side wall of the water barrel 321, the water drainage pipe 323 is communicated with the water barrel 321, the water drainage pipe 323 comprises a first portion 3231 and a second portion 3232, the first portion 3231 is a hard pipe, the second portion 3232 is a hose, the first portion 3231 is communicated with the water drainage tank 322, the second portion 3232 is fixedly connected with the side wall of the water barrel 321, and a descending allowance convenient for descending of the water barrel 321 is reserved in the second portion 3232.

When no water is accumulated on the road surface 4 at ordinary times, under the action of the return spring 312, the cover body 21 moves upwards until the upper surface of the closing plate 222 is flush with the upper surface of the drainage cover 1, at this time, the drainage hole 11 on the drainage cover 1 is closed, when the road surface 4 generates accumulated water in rainy days, the accumulated water on the road surface 4 enters the drainage tank 322 through the water inlet 3221 on the side wall of the drainage tank 322 and then enters the water bucket 321 through the drainage pipe 323, the gravity of the water bucket 321 increases after water is stored in the water bucket 321, the water bucket 321 drives the closing cover 2 to descend through the pull rope 3211, so that the drainage hole 11 on the drainage cover 1 is opened, and then the accumulated water on the road surface 4 can enter the drainage well 5 through the drainage hole 11 on the drainage cover 1 and the drainage gap 6 between the cover body 21 and the inner wall of the drainage well. Therefore, the drainage hole 11 on the drainage cover 1 is in a closed state at ordinary times, and the foreign matters entering the drainage well 5 can be reduced as much as possible.

Referring to fig. 3, the drainage cover 1 is formed with a first hole 12, the cover body 21 is formed with a second hole 211, and the first hole 12 is aligned with the second hole 211, so that when the accumulated water on the road surface 4 is relatively small and the accumulated water cannot be accumulated in the water bucket 321 enough to move the closing cover 2 downward, the accumulated water can enter the drainage passage 51 through the first hole 12 and the second hole 211.

The bottom wall of the water bucket 321 is provided with a connecting hole 3212, and the efficiency of discharging accumulated water in the water bucket 321 to the outside is far lower than the efficiency of discharging water from the water discharge pipe 323 to the water bucket 321 through the connecting hole 3212. When the rainy day is over, the accumulated water on the road surface 4 disappears, at this time, the water discharging pipe 323 stops injecting water into the water bucket 321, the accumulated water in the water bucket 321 is gradually discharged from the connecting hole 3212, the pulling force of the water bucket 321 on the cover body 21 is gradually reduced along with the loss of the accumulated water in the water bucket 321, and in the process, the cover body 21 gradually moves upwards in the resetting process until the plug piece 22 closes the water discharging hole 11 again.

Referring to fig. 2, the bottom of the drainage well 5 is provided with a garbage collection device 7, the garbage collection device 7 comprises a collection frame 71, the top of the collection frame 71 is provided with an opening, and the outer side wall of the collection frame 71 is provided with a plurality of water leakage holes.

Referring to fig. 5, the opening of the drainage channel 51 in the drainage well 5 is higher than the collecting frame 71, meanwhile, an annular fixing groove 52 is formed in the edge of the drainage channel 51 in the drainage well 5, a circular annular mounting ring 72 is embedded in the fixing groove 52, the mounting ring 72 is fixed in the fixing groove 52 through a bolt, a circular filter screen 73 is arranged in the mounting ring 72, an additional ring 731 matched with the mounting ring 72 is fixedly connected to the outer edge of the filter screen 73, and the outer peripheral surface of the additional ring 731 is in threaded connection with the inner peripheral surface of the mounting ring 72.

When the rain and rainy days occur, the closing cover 2 moves downwards to open the drain hole 11 on the drain cover 1, and then the rainwater entering the drain well 5 may be doped with more impurities, and the impurities are blocked by the filter screen 73 and cannot enter the drain passage 51 after entering the drain well 5, so that the blockage of the drain passage 51 can be avoided as much as possible, and the impurities blocked in the drain well 5 can be settled in the collecting frame 71. When more impurities are accumulated in the collecting frame 71, the worker takes out the collecting frame 71 from the drainage well 5 to clean the same.

Referring to fig. 6, in order to facilitate cleaning of the collection frame 71 by the staff, four fixing ropes 711 are fixedly connected to the upper surface of the collection frame 71, the top ends of the four fixing ropes 711 are converged at one position, hanging rings 74 are arranged at the converging points of the four fixing ropes 711, and the four fixing ropes 711 are all fixedly connected with the hanging rings 74. When the collection frame 71 needs to be taken out of the drain well 5 by a worker, the worker hooks the hanging ring 74 through the hook and then pulls the collection frame 71 upward.

Referring to fig. 2 and 6, a horizontally disposed fixing rod 53 is fixedly connected to an inner wall of the drainage well 5, a fixing hook 531 is fixedly connected to the fixing rod 53, and in a use state of the collection frame 71, the hanging ring 74 on the collection frame 71 is hung on the fixing hook 531, and at this time, the collection frame 71 is in a suspended state.

Referring to fig. 6, a convex edge 712 is integrally formed on the outer side wall of the top of the collecting frame 71, and a gap is formed between the outer side wall of the collecting frame 71 and the inner side wall of the drainage well 5 under the supporting action of the convex edge 712, so that the accumulated water in the collecting frame 71 can more easily flow out of the collecting frame 71.

Referring to fig. 2, the drainage channel 51 is inclined downward, and the sidewall of the bottom wall of the drainage well 5 is provided with a water accumulation discharge hole 8 communicated with the drainage channel 51, so that when a rainy day passes, the accumulated water at the bottom of the drainage well 5 can be discharged into the drainage channel 51 through the water accumulation discharge hole 8. The bottom of the drainage well 5 is prevented from accumulating water as much as possible.

The implementation principle of a town road drainage system of the embodiment of the application is as follows: when a relatively small amount of water is accumulated on the road surface 4, the accumulated water is discharged into the drainage well 5 through the first hole 12 and the second hole 211 on the drainage cover 1; when the water accumulated on the road surface 4 is large, the accumulated water enters the water through tank 322 through the through hole on the water through tank 322 and then enters the water bucket 321 along the water discharge pipe 323, so that the water bucket 321 drives the closing cover 2 to move downwards, the water discharge hole 11 on the water discharge cover 1 is opened, the accumulated water on the road surface 4 is discharged into the water discharge well 5 through the water discharge hole 11 and the water discharge gap 6 between the cover body 21 and the inner wall of the water discharge well 5, and the garbage entering the water discharge well 5 in the process can be isolated in the collection frame 71.

When the accumulated water on the road surface 4 is drained, no accumulated water is drained into the water bucket 321 any more, at the moment, the accumulated water in the water bucket 321 is drained out gradually through the connecting hole 3212, the gravity given to the cover body 21 by the water bucket 321 is reduced, and the sealing cover 2 moves upwards under the action of the return spring 312 and then seals the water drainage hole 11 again. The accumulated water at the bottom of the drain well 5 is discharged into the drain passage 51 through the accumulated water discharge hole 8.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A town road drainage system which characterized in that: the urban sewage drainage system comprises a drainage well (5), a drainage cover (1), a sealing cover (2) and a control assembly (3), wherein the drainage well (5) is arranged on a road surface (4), the bottom of the drainage well (5) is provided with a drainage channel (51) communicated with an urban sewage pipeline, the drainage cover (1) is arranged at an opening position at the top of the drainage well (5), and the drainage cover (1) is provided with a plurality of drainage holes (11); the closing cap (2) is used for plugging a drain hole (11) on the drain cap (1); when the road surface (4) is in a water accumulation state, the control assembly (3) is used for controlling the closing cover (2) to open a plurality of water drainage holes (11) on the water drainage cover (1); when the road surface (4) is not accumulated with water, the control component (3) is used for controlling the closing cover (2) to close the drain hole (11) on the drain cover (1).

2. A municipal road drainage system according to claim 1, wherein: the sealing cover (2) is arranged in a drainage well (5) right below the drainage cover (1), and a drainage gap (6) is arranged between the sealing cover (2) and the drainage well (5).

3. A municipal road drainage system according to claim 2, wherein: the sealing cover (2) comprises a cover body (21) and a plurality of plug connectors (22), and the plug connectors (22) are respectively in one-to-one correspondence with the drain holes (11); the plug-in unit (22) comprises a closing plate (222) installed on the drainage cover (1), and when the plug-in unit (22) is inserted into the drainage hole (11), the upper surface of the closing plate (222) is flush with the upper surface of the drainage cover (1).

4. A municipal road drainage system according to claim 2, wherein: the control assembly (3) comprises a lifting piece (31) and a pull-down piece (32); the lifting piece (31) comprises a mounting frame (311) fixedly connected to the drainage cover (1), a return spring (312) is arranged between the mounting frame (311) and the closing cover (2), and the closing cover (2) closes the drainage hole (11) under the support of the return spring (312); the pull-down piece (32) comprises a water bucket (321), a pull rope (3211) is fixedly connected between the water bucket (321) and the cover body (21), and a road shoulder (41) on the roadside is provided with a drainage pipeline for guiding accumulated water on the road surface (4) into the water bucket (321).

5. A municipal road drainage system according to claim 4, wherein: the drainage pipeline comprises a hard pipe and a hose which are communicated with each other, the hard pipe is buried into the ground, one end of the hose is fixedly connected to the side wall of the bucket (321), the other end of the hose is communicated with the bucket (321), and the length of the hose is provided with the allowance for the bucket (321) to descend.

6. A municipal road drainage system according to claim 1, wherein: the drainage cover (1) is provided with a first hole (12), and the closing cover (2) is provided with a second hole (211) aligned with the first hole (12).

7. A municipal road drainage system according to claim 4, wherein: the bucket (321) is provided with a drain hole (11), and the diameter of the drain hole (11) is smaller than that of the drain pipe (323).

8. A municipal road drainage system according to claim 1, wherein: be provided with waste collection device (7) in drainage well (5), the one end that drainage channel (51) are located drainage well (5) is provided with filter screen (73), and waste collection device (7) are including setting up collection frame (71) in drainage well (5), and the height that collects frame (71) is less than filter screen (73).

9. A municipal road drainage system according to claim 8, wherein: the urban sewage drainage system is characterized in that a plurality of water leakage holes are formed in the collecting frame (71), accumulated water discharge holes (8) communicated with urban drainage pipelines are formed in the side wall of the drainage well (5), and the accumulated water discharge holes (8) are used for discharging accumulated water in the drainage well (5) below the joint of the drainage channel (51) and the drainage well (5) into an urban sewage pipeline.

10. A municipal road drainage system according to claim 9, wherein: collect on frame (71) the lateral wall an organic whole be provided with protruding edge (712), and the rigid coupling has dead lever (53) on the inner wall of drainage well (5), the rigid coupling has fixed hook (531) on dead lever (53), the rigid coupling has fixed rope on collecting frame (71), the rigid coupling has link (74) on the fixed rope, link (74) hook is hung in fixed hook (531), and when link (74) hook and fixed hook (531), collect frame (71) and be in unsettled state.