CN110872848A - Road accumulated water rapid discharge processing method with safety warning protection function - Google Patents

Abstract

A road accumulated water rapid discharge treatment method with a safety warning protection function relates to a sewage discharge method, wherein a plurality of through holes which reach the inside of a well mouth and are annularly arranged are arranged on the upper peripheral surface of the well mouth, and a water pipe with a lower pipe orifice opposite to the well mouth is respectively inserted into each through hole; the invention has the characteristic of integrating a well head with a cylinder body for safety protection, so that the shape of annular arrangement can be formed when the well cover is lost or damaged and replaced in a missing state, the protection effect is achieved, the sewage discharge is greatly accelerated by arranging the plurality of through holes which are arranged in the annular arrangement on the upper edge, the inconvenience of pedestrians caused by the accumulated water on the road surface in heavy rain is avoided, and the warning character marks made of noctilucent materials are arranged, the warning effect can be realized at night, the safety accident caused by the collision of the pedestrians and the cylinder body under the condition of dark light at night is avoided, the pedestrians and vehicles can be effectively prevented from falling into a well, and the occurrence probability of the safety accident is reduced.

Description

Road accumulated water rapid discharge processing method with safety warning protection function

Technical Field

The invention relates to a sewage discharge method, in particular to a manhole cover with a safety warning and protection function for quickly discharging accumulated water on a road.

Background

The well lid is used for covering a road or a deep well at home and preventing people or objects from falling. The material can be divided into a metal well cover, a high-strength fiber cement concrete well cover, a resin well cover and the like. The well lid is a visible device in all countries and regions, is an important link of municipal construction, and can be used for greenbelts, sidewalks, motor vehicle lanes, wharfs, small roadways and the like.

Along with the continuous development of cities and the continuous increase of city construction, safety protection measures of well covers are more and more emphasized in the city construction. In the using process of the well lid, the situation that the well lid is stolen often happens, and safety accidents that pedestrians and various vehicles fall into a well are easily caused after the well lid is stolen; when a city rainstorm occurs and the city rains over the road surface, the condition that rainwater deposition is unbalanced with the drainage function of the well cover often occurs, so that excessive water is accumulated on the road surface, and inconvenience is brought to people going out; and the well lid rocks easily when the vehicle passes through, and long-time jolting especially heavy-duty car rolls and causes the well lid damage easily to sink, needs to change damaged well lid, leads to the normal operating that influences the traffic. At present, the use of well covers in urban construction still has a lot of problems, as follows:

1. at present, the well lid applied to urban construction has great problems in safety warning and drainage, and when the well lid is stolen and damaged and collapsed, the well lid brings danger to passing pedestrians and vehicles, so that the well lid with obvious safety reminding is urgently needed;

2. when the well lid is stolen or the well is dredged, a red road sign is often arranged on the road surface beside the well, and the road sign is easy to topple over in the using process, so that the warning effect is not obvious, and the safety well has great danger; sometimes, when the well lid is lost due to loss or damage and replacement, tree branches are stacked at the opening of the well lid, and the shielding mode has great potential safety hazard, so that the branches are easy to drop and break, and the safety of vehicles and pedestrians cannot be ensured;

3. when rainstorm occurs in a city and rainwater fully flows across a road surface, the well cover needs to be opened for flood discharge, the opening of the well cover opening is very dangerous, when the rainwater is excessively submerged on the road surface, people cannot see the well cover opening, and dangers such as dropping and the like are very easy to occur in the process of coming and going of pedestrians and vehicles, so that accidental injury is caused;

4. the existing well lid is generally provided with two drain holes on the upper surface of the well lid in a rainy day for dredging rainwater on the road surface, so that accumulated water on the road surface is avoided, and walking of pedestrians and passing of vehicles are not facilitated;

5. at present, in order to prevent the well lid from moving or losing, in order to ensure the safety of pedestrians and vehicles when coming and going, a protective net is additionally arranged in a well, so that the situation that the pedestrians and the vehicles fall into the well but the pedestrians fall into the protective net and are still damaged is avoided, the vehicles are hung into the protective net, the damage of the vehicles and the damage to the protective net are also easily caused, and the safety protection effect is poor;

6. when the well lid collapses due to jolt of a vehicle running for a long time, the well lid needs to be maintained or reinstalled, and in the maintenance process, after the damaged well lid is taken down, a maintenance worker can arrange a roadblock near the well lid to warn pedestrians and vehicles passing by the pit, but the currently used roadblock can move, is easily blown down by wind in the process of making, and has a poor warning effect;

7. the rubbish that gets into in the well through well lid wash port can block up the wash port or block up the well when too much, makes the drainage ability decline of well, leads to the ponding on stormy days road surface can not good mediation, influences pedestrian and vehicle current, still can increase maintenance personal's work load.

Along with the continuous development in city, the well lid is as the important link in the municipal construction, and the well lid is at the in-process that uses, still has above-mentioned problem to be solved urgently, consequently has need to provide a well lid and solves above-mentioned problem, has very big meaning to city construction and resident's trip safety.

Disclosure of Invention

In order to overcome the defects in the background art, the invention discloses a manhole cover with a safety warning protection function for quickly discharging road accumulated water, which has the characteristic that a well mouth and a cylinder for safety protection are integrated, so that the manhole cover can form an annular arrangement shape when being lost or damaged and replaced, and the protective function is achieved.

The technical scheme for realizing the invention is as follows:

a method for quickly discharging and treating accumulated water on a road with a safety warning protection function comprises the following steps:

s1: preparing a base, namely drilling a plurality of through holes (9) which are arranged in a ring shape on the upper edge (2) of the well lid base (1) or molding the well lid base (1) with the through holes (9) which are arranged in the ring shape on the upper edge (2) in one step by adopting a concrete pouring process; a water pipe (10) is respectively inserted into each through opening (9), and a filter screen cylinder (11) is arranged on the lower pipe opening of each water pipe (10); a plurality of clamping plates (5) which are annularly arranged are arranged on the inner side wall of the base (1), and a post rod (8) which extends towards the front end is movably connected inside each clamping plate (5);

s2: base installation, namely paving the base (1) manufactured in the step S1 at the drainage well position on the road, and placing a cover plate (18) of the well cover on the base (1);

s3: rapidly discharging road accumulated water: when raining or road surface water spraying cleaning is carried out, sewage flows into a drainage well through holes (9) which are annularly arranged on the upper edge (2) of the upper part of the base (1) so as to accelerate sewage discharge in a mode of increasing sewage inflow inlets, impurities and dirt are intercepted through a filter screen cylinder (11) arranged on a lower pipe opening of a water pipe (10) in the through holes (9), and a cover plate (18) can be periodically opened to disassemble and clean the filter screen cylinder (11);

s4: safety protection when well lid lacks: when the well lid was stolen or the well lid damage collapsed and lead to drainage well portion well lid to lack, staff can erect respectively exposing each post (8) of cyclic annular arrangement on outer base (1) inside wall, specifically do: firstly screwing out the positioning bolts (7) which are in threaded connection with the front parts of the U-shaped clamping plates (5), moving the post rods (8) upwards by hands, movably connecting the rear parts of the post rods (8) with the rear parts of the U-shaped clamping plates (5) through the rivets (6), enabling the post rods (8) to rotate upwards around the rivets (6), re-screwing back the corresponding positioning bolts (7) after each post rod (8) is erected, limiting and fixing the post rods (8), forming a fence which is arranged along the periphery of a well mouth after all the annularly arranged post rods (8) are erected, forming safety protection on the well mouth, and avoiding vehicles or personnel from falling into the well mouth;

s5: safety warning, fasten the fastening bolt 21 on two otic placodes 20 on two half cylinders 12 and twist off, expand two half cylinders 12, two jam plates 22 at two half cylinder 12 rear portions are folded mutually simultaneously, twist fastening bolt 21 spiral shell in two jam plates 22 can fasten two half cylinders 12 again, make half cylinder (12) of expansion fixed, the warning word mark (14) of the night light of the face mark that two half cylinders (12) are folded mutually show outside this moment, each warning word mark (14) ring-type is arranged respectively around the road surface, play the effect of warning at night, each post (8) pole body is pasted night light and is pasted (16), play the effect of the suggestion of lighting up at night, avoid the pedestrian to be close to well head (3) under the condition of no light.

The invention also provides a manhole cover with a safety warning and protecting function for quickly discharging accumulated water on a road, which comprises a cover plate and a base, wherein the upper part of the base is provided with an upper edge, the upper surface of the upper edge is provided with a plurality of through holes which are annularly arranged, water pipes are respectively inserted into the through holes, the lower pipe orifice of each water pipe is respectively connected with a filter screen cylinder, the inner side wall of the upper edge of the base is provided with a plurality of clamping plates which are annularly arranged, the inside of each clamping plate is respectively and movably connected with a post rod which extends towards the front end, the rear part of each post rod is movably connected with the rear part of each clamping plate through a rivet, the front part of each clamping plate is in threaded connection with a positioning bolt, the positioning bolt is arranged at the upper end of each post rod, the front part of each post rod is provided with a post top, the post top consists of two semi-cylinders which are mutually folded up and down, the middle part of each semi-cylinder, warning word marks made of noctilucent materials are respectively glued in each groove, noctilucent stickers are glued around the wall surface of the middle part of the post rod, and a sealed transparent waterproof cover is laid on the surfaces of the noctilucent stickers.

The filter screen cylinder is connected to the lower pipe orifice of the water pipe through threads.

The clamping plate is welded on the inner side wall of the edge of the base.

The middle part of the inner wall of the wellhead is provided with a limiting edge of a necking down, the cover plate covers the upper end of the wellhead, and the bottom of the cover plate is pressed on the limiting edge.

The clamping plate is a U-shaped clamping plate with a high front part and a low back part, the back parts of two side plates of the U-shaped clamping plate are respectively provided with opposite through holes, and rivets sequentially pass through the through holes on the two side plates and the through hole on the back part of the post rod and are movably connected with the post rod; the front parts of the two side plates of the U-shaped clamping plate are respectively provided with opposite threaded holes, and positioning bolts are screwed in the threaded holes on the two side plates.

One side of the two half cylinders is connected through a hinge, the half cylinder at the lower end is fixedly connected with a column rod, the half cylinder at the upper end is movably folded on the half cylinder at the lower end, the middle edges of the joints of the arc surfaces of the two half cylinders and the hinge are respectively provided with a locking plate with a corresponding threaded hole, the middle edges of the other sides of the two half cylinders and the middle edges of the other sides of the two half cylinders are respectively provided with an ear plate with a corresponding threaded hole, and the two ear plates and the two locking plates are respectively fastened and connected through fastening bolts.

The manhole cover with the safety warning and protecting functions for quickly discharging accumulated road water has the advantages that the manhole cover has the characteristic that a well mouth and a cylinder for safety protection are integrated, so that when the manhole cover is lost or damaged and collapsed, the manhole cover can form a shape in annular arrangement to play a role in protection, and warning word marks made of noctilucent materials are arranged, so that the warning effect can be realized at night, the safety accident caused by collision of pedestrians and the cylinder under the condition of dark light at night can be avoided, pedestrians and vehicles can be effectively prevented from falling into a hoistway, and the occurrence probability of the safety accident can be reduced; in addition, the invention has good drainage function, the drainage of sewage is greatly accelerated by arranging the plurality of through holes which are annularly arranged on the upper edge, the inconvenience of pedestrians caused by water accumulation on the road surface in a rainstorm day is avoided, and meanwhile, the inflow garbage can be collected in a centralized manner during drainage, so that the cleaning is convenient. The protective action of this device is arranged the realization at the well head annular through the cylinder, has very strong steadiness, removes to be applied to the condition that the well lid was lost, can also be applied to heavy rainy day, puts aside the well lid and when hydrophobic, plays the guard action, and the cylinder is connected with the well head is firm, can effectively avoid the condition emergence that the safety protection post of traditional use was washed away by water easily. The invention has good safety and great significance for city construction and resident trip safety.

Form netted through setting up several post annular arrangement, when the well lid damage sinks to maintain the replacement in-process or when the condition of losing takes place, the effect that plays the rail guard is raised to the post ring-type, avoid pedestrian and vehicle to drop in the well, cause the injury, the post passes through rivet and U type splint swing joint, U type splint welding is in the inner wall lower part of well head, realize the firm connection of cylinder and well head, can effectually play the guard action, avoid installing the protection network in traditional urban construction, pedestrian and vehicle also can receive the damage in falling into the protection network, the protective effect who plays to pedestrian and vehicle is not good.

Through the warning word mark that has the night light material that glues respectively in the recess, for example "danger" and "danger", when the well lid is lost or the well lid damage sinks the maintenance replacement in-process, play the effect of warning, the post belongs to the integral type with the well head, establish the road sign at the roadside hazard when avoiding traditional well lid to lose, empty easily, cause the condition emergence of warning effect inefficacy, can effectually remove or lose under the condition at the well lid, play the prompt action, avoid pedestrian or vehicle to fall into the danger in the well, and it has the night light subsides to glue around post middle part wall, can realize the effect of illuminating the suggestion night, avoid the pedestrian unconscious collision post under the dim condition of light. The sealed transparent waterproof cover is laid on the surface of the luminous paste, so that the phenomenon that the luminous paste is wetted in the environment for a long time and the luminous paint falls off to influence the warning effect can be avoided.

The plurality of through holes which are annularly arranged are arranged on the peripheral surface of the upper part of the wellhead, the through holes can reach the inside of the wellhead, water pipes are respectively inserted into the through holes, water can be drained from the plurality of water pipes in a heavy rain day, and the phenomenon that a large amount of accumulated water on the road surface is caused by excessive rainwater and is not beneficial to the trip of pedestrians is avoided; through threaded connection have a filter screen section of thick bamboo respectively on the lower mouth of pipe of each water pipe, a filter screen section of thick bamboo is the rubbish such as impurity of being convenient for collect and dropping from the water pipe, avoids too much rubbish deposit in the well, causes the well to block up, reducible pipeline staff mediation work.

The structure through low formula U type splint in preceding high back can realize that positioning bolt is in the position that has a take the altitude to when the post stands up, positioning bolt in the high position can support in the higher position department of post, and it is spacing to better realize the interception of post, avoids toppling over when the post stands up.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the structure of the use state of the present invention.

Fig. 3 is a schematic structural diagram of the warning device of the present invention.

Fig. 4 is a rear view of the warning device of the present invention.

In the figure, 1, a base; 2. an upper edge; 3. a wellhead; 4. a limiting edge; 5. a splint; 6. riveting; 7. positioning the bolt; 8. a post rod; 9. a through hole; 10. a water pipe; 11. a filter screen cylinder; 12. a semi-cylinder; 13. a post top; 14. warning word marks; 15. a groove; 16. a luminous paste; 17. a waterproof cover; 18. a cover plate; 19. hinge; 20. an ear plate; 21. fastening a bolt; 22. and (6) locking the plate.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

With reference to the structures shown in the accompanying drawings 1-4, the invention also provides a manhole cover with a safety warning and protection function for quickly discharging accumulated road water, which comprises a cover plate 18 and a base 1, wherein the upper part of the base 1 is provided with an upper edge 2, the upper surface of the upper edge 2 is provided with a plurality of through holes 9 which are annularly arranged, water pipes 10 are respectively inserted into the through holes 9, the lower pipe orifice of each water pipe 10 is respectively connected with a filter screen cylinder 11, the inner side wall of the edge 2 on the base 1 is provided with a plurality of clamping plates 5 which are annularly arranged, the inner part of each clamping plate 5 is respectively and movably connected with a post rod 8 which extends towards the front end, the rear part of the post rod 8 is movably connected with the rear part of each clamping plate 5 through a rivet 6, the front part of each clamping plate 5 is in threaded connection with a positioning bolt 7, the positioning bolt 7 is arranged at the upper end of the post rod 8, the front part of the post rod 8 is provided, the column top 13 is composed of two half columns 12 which are folded up and down, the middle part of a plane plate which is folded by each half column 12 is respectively provided with a groove 15, a warning character mark 14 made of noctilucent material is respectively glued in each groove 15, a noctilucent sticker 16 is glued around the wall surface of the middle part of the column rod 8, and a sealed transparent waterproof cover 17 is laid on the surface of the noctilucent sticker 16.

The filter screen cylinder 11 is connected to the lower nozzle of the water pipe 10 through threads, and the filter screen cylinder 11 is arranged to facilitate collecting sundries falling from the Z-shaped water pipe 10.

The clamping plate 5 is welded on the inner side wall of the edge 2 on the base 1.

A necking limit edge 4 is arranged in the middle of the inner wall of the wellhead 3, the cover plate 18 covers the upper end of the wellhead 3, and the bottom of the cover plate presses on the limit edge 4.

The clamp plate 5 is a U-shaped clamp plate with a high front part and a low rear part, opposite through holes are respectively arranged at the rear parts of two side plates of the U-shaped clamp plate 5, and the rivet 6 sequentially penetrates through the through holes on the two side plates and the through hole on the rear part of the post rod 8 and is movably connected with the post rod 8; the front parts of two side plates of the U-shaped clamping plate 5 are respectively provided with opposite threaded holes, a positioning bolt 7 is screwed in the threaded holes on the two side plates, the positioning bolt 7 is arranged at the upper end of a column rod 8, the positioning bolt 7 is arranged to play a role of blocking when the column rod 8 stands up, the stand column rod 8 is prevented from falling down due to external force touch, the length of the column rod 8 is two to three times of the height of the long edge 2, the column rod 8 is guaranteed to be higher than the road surface to prevent personnel from falling off when standing up, the plurality of column rods 8 are annularly arranged to form a net shape to play a role of a guard rail, pedestrians are prevented from falling into a well without cover plates or serious damage of the cover plates, and the plurality of column rods 8 simultaneously stand up to play a role of blocking the guard rail, and pedestrians are prevented from falling into the well close to the well mouth without the cover plates under the.

One side of the two half cylinders 12 is connected through a hinge, the half cylinder 12 at the lower end is fixedly connected with a column rod 8, the half cylinder 12 at the upper end is movably folded on the half cylinder 12 at the lower end, the middle edges of the arc surfaces of the two half cylinders 12 at the joint of the hinge 19 are respectively provided with a relative locking plate 22 with a threaded hole, the middle edges of the other sides of the two half cylinders 12 are respectively provided with a relative lug plate 20 with a threaded hole, the two lug plates 20 and the two locking plates 22 are respectively fastened and connected through a fastening bolt 21, the two half cylinders 12 can be unfolded only by screwing down the fastening bolt 21 fastened on the two lug plates 20, the two locking plates 22 at the rear part are overlapped, the fastening bolt 21 is screwed in the two locking plates 22 to fasten the two half cylinders 12, the fastening bolt 21 plays the role of fastening when the two half cylinders 12 are folded or unfolded, and the two locking plates 22 can be replaced by a matched door stopper, when the two half cylinders 12 are unfolded, the door stoppers touch and attract each other to fixedly connect the unfolded two half cylinders 12, the middle part of the plane plate folded by each half cylinder 12 is respectively provided with a groove 15, a warning character mark 14 made of a luminous material, such as 'danger' and 'danger', is respectively glued in each groove 15, the pillar 8 plays a warning role when standing up, and is also suitable for night warning, the warning character mark 14 is arranged in the folded groove 15 and can effectively prevent water from entering, meanwhile, the warning character mark 14 can prevent a luminous paint surface from falling off in a wet environment, a luminous paste 16 is glued around the wall surface of the middle part of the pillar 8, the luminous paste 16 is arranged to play a role of lighting and prompting at night to prevent pedestrians from unconsciously colliding the pillar 8 under the condition of no light, and a sealed transparent waterproof cover 17 is laid on the surface of the luminous paste 16, the waterproof cover 17 is arranged to avoid the phenomenon that the luminous paint falls off when the luminous paste 16 is in a humid environment in the well for a long time.

The well lid with the safety warning and protecting functions for quickly discharging the accumulated road water has the advantages that the loss or serious damage of the well lid cover plate can cause great potential safety hazards to pedestrians and passing vehicles, when the well lid cover plate is lost, a worker can respectively erect the annularly arranged column rods 8 connected with the inner wall of the well mouth 3 in the base 1, the corresponding positioning bolts 7 are screwed out before the column rods 8 are erected, the column rods 8 are lifted upwards by hands, the column rods 8 rotate upwards around the rivets 6, the corresponding positioning bolts 7 are screwed back again after the column rods 8 are erected, the function of blocking the column rods 8 is achieved, the erected column rods 8 are prevented from falling back into the well mouth 3 due to strong wind blowing or artificial touch, the column rods 8 are erected at the same time to form a fence, the function of isolating the well mouth 3 is achieved, and the pedestrians or the passing vehicles are prevented from falling into the well mouth 3 under the condition of no intention, then the column top 13 at the top of each column rod 8 is movably folded to form the semi-column 12, the two locking plates 22 at the rear part are overlapped, the movable semi-column 12 is fixed by screwing and fastening the fastening bolts 21, at the moment, the luminous warning character marks 14 marked on the overlapped plate surfaces of the two semi-columns 12 are displayed outside, the warning character marks 14 are annularly arranged to face the periphery of the road surface respectively, and play a role in warning at night, and the luminous paste 16 is pasted on the rod body of each column rod 8 to play a role in illuminating and prompting at night, so that pedestrians are prevented from approaching the well mouth 3 under the condition of no light; the manhole cover has the advantages that the manhole cover and the post rod for safety protection are integrated, so that when the manhole cover is lost or damaged and replaced, the manhole cover can form a shape in annular arrangement, a protection effect is achieved, the warning effect can be achieved at night by arranging the warning character marks made of the noctilucent materials, the pedestrian and the post body are prevented from colliding at night under the condition of dark light, safety accidents are avoided, pedestrians and vehicles can be effectively prevented from falling into a well, and the occurrence probability of the safety accidents is reduced; in addition, the invention has good drainage function, avoids the inconvenience of pedestrians caused by water accumulation on the road surface in rainstorm days, and can collect the inflowing garbage in a centralized way during drainage, thereby being convenient for cleaning. The protective action of this device is arranged the realization at the well head annular through the cylinder, has very strong steadiness, removes to be applied to the condition that the well lid was lost, can also be applied to heavy rainy day, puts aside the well lid and when hydrophobic, plays the guard action, and the cylinder is connected with the well head is firm, can effectively avoid the condition emergence that the safety protection post of traditional use was washed away by water easily. The invention has good safety and great significance for city construction and resident trip safety.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (1)

1. A method for quickly discharging and treating accumulated water on a road with a safety warning protection function is characterized by comprising the following steps: the method comprises the following steps:

s1: preparing a base, namely drilling a plurality of through holes (9) which are arranged in a ring shape on the upper edge (2) of the well lid base (1) or molding the well lid base (1) with the through holes (9) which are arranged in the ring shape on the upper edge (2) in one step by adopting a concrete pouring process; a water pipe (10) is respectively inserted into each through opening (9), and a filter screen cylinder (11) is arranged on the lower pipe opening of each water pipe (10); a plurality of clamping plates (5) which are annularly arranged are arranged on the inner side wall of the base (1), and a post rod (8) which extends towards the front end is movably connected inside each clamping plate (5);

s2: base installation, namely paving the base (1) manufactured in the step S1 at the drainage well position on the road, and placing a cover plate (18) of the well cover on the base (1);

s3: rapidly discharging road accumulated water: when raining or road surface water spraying cleaning is carried out, sewage flows into a drainage well through holes (9) which are annularly arranged on the upper edge (2) of the upper part of the base (1) so as to accelerate sewage discharge in a mode of increasing sewage inflow inlets, impurities and dirt are intercepted through a filter screen cylinder (11) arranged on a lower pipe opening of a water pipe (10) in the through holes (9), and a cover plate (18) can be periodically opened to disassemble and clean the filter screen cylinder (11);

s4: safety protection when well lid lacks: when the well lid was stolen or the well lid damage collapsed and lead to drainage well portion well lid to lack, staff can erect respectively exposing each post (8) of cyclic annular arrangement on outer base (1) inside wall, specifically do: firstly screwing out the positioning bolts (7) which are in threaded connection with the front parts of the U-shaped clamping plates (5), moving the post rods (8) upwards by hands, movably connecting the rear parts of the post rods (8) with the rear parts of the U-shaped clamping plates (5) through the rivets (6), enabling the post rods (8) to rotate upwards around the rivets (6), re-screwing back the corresponding positioning bolts (7) after each post rod (8) is erected, limiting and fixing the post rods (8), forming a fence which is arranged along the periphery of a well mouth after all the annularly arranged post rods (8) are erected, forming safety protection on the well mouth, and avoiding vehicles or personnel from falling into the well mouth;

s5: safety warning, fasten the fastening bolt 21 on two otic placodes 20 on two half cylinders 12 and twist off, expand two half cylinders 12, two jam plates 22 at two half cylinder 12 rear portions are folded mutually simultaneously, twist fastening bolt 21 spiral shell in two jam plates 22 can fasten two half cylinders 12 again, make half cylinder (12) of expansion fixed, the warning word mark (14) of the night light of the face mark that two half cylinders (12) are folded mutually show outside this moment, each warning word mark (14) ring-type is arranged respectively around the road surface, play the effect of warning at night, each post (8) pole body is pasted night light and is pasted (16), play the effect of the suggestion of lighting up at night, avoid the pedestrian to be close to well head (3) under the condition of no light.

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