CN112832291A

CN112832291A - Inspection well and construction method thereof

Info

Publication number: CN112832291A
Application number: CN202011622710.XA
Authority: CN
Inventors: 吴建忠; 陈道日; 程丽; 汪林峰; 林金东
Original assignee: Zhejiang Wanchuan Decoration Design Engineering Co ltd
Current assignee: Zhejiang Wanchuan Decoration Design Engineering Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-25

Abstract

The application relates to the technical field of municipal construction, and discloses an inspection well and a construction method thereof, wherein the inspection well comprises a well body and a well bottom, wherein the well body is provided with a mounting groove, the bottom of the mounting groove is provided with a through hole, an inspection well seat is arranged in the mounting groove, the upper end surface of the inspection well seat is provided with a first fixing groove, and the bottom of the first fixing groove is provided with a first fixing hole; the inspection shaft cover is arranged in the mounting groove, the water inlet groove is formed in the lower end face of the inspection shaft cover, the first water inlet hole communicated with the water inlet groove is formed in the upper end face of the inspection shaft cover, the second water inlet hole communicated with the water inlet groove is formed in the side wall of the inspection shaft cover, the lifting mechanism used for driving the inspection shaft cover to lift is arranged on the inspection shaft seat, the inspection shaft cover can move along the axis direction of the mounting groove to enable the second water inlet hole to be higher than the upper end face of the inspection shaft seat, and the inspection shaft cover has the effect of enabling the road surface to be not.

Description

Inspection well and construction method thereof

Technical Field

The application relates to the technical field of municipal construction, in particular to an inspection well and a construction method thereof.

Background

At present, inspection wells are used for draining rainwater in cities, so that the rainwater is supplemented to the underground or redundant rainwater is drained through drainage pipelines.

The inspection shaft comprises a well body, wherein the upper end face of the well body is flush with the ground, a mounting groove is formed in the well body, one end, away from an opening, of the mounting groove is provided with a through hole, an inspection shaft cover is arranged in the mounting groove, a water inlet hole is formed in the upper end of the inspection shaft cover, and the water inlet hole is used for discharging water on the ground into the through hole.

In view of the above-mentioned related technologies, the inventor believes that the number of water inlet holes in the inspection well cover is fixed, that is, the drainage per minute of the inspection well cover is fixed, and in rainy days and when the rainfall is greater than the drainage of the inspection well cover, water is accumulated above the inspection well cover, thereby affecting traffic.

Disclosure of Invention

In order to improve the problem of surface water accumulation, the application provides an inspection well and a construction method thereof.

The application provides an inspection well and a construction method thereof, which adopts the following technical scheme:

an inspection well comprises a well body, wherein the well body is provided with a mounting groove, the bottom of the mounting groove is provided with a through hole, an inspection well seat is arranged in the mounting groove, the upper end surface of the inspection well seat is provided with a first fixing groove, and the bottom of the first fixing groove is provided with a first fixing hole; the inspection well cover is arranged in the mounting groove, the water inlet groove is formed in the lower end face of the inspection well cover, the first water inlet hole communicated with the water inlet groove is formed in the upper end face of the inspection well cover, the second water inlet hole communicated with the water inlet groove is formed in the side wall of the inspection well cover, the lifting mechanism for driving the inspection well cover to lift is arranged on the inspection well base, and the inspection well cover can move along the axis direction of the mounting groove to enable the second water inlet hole to be higher than the upper end face of the inspection well base.

By adopting the technical scheme, when rainfall is small, water enters the water inlet groove through the first water inlet hole and then enters the well body through the water inlet groove and the first fixing hole, and the water is discharged; when the rainfall is large, the inspection well cover is driven by the lifting mechanism to rise, so that the upper end surface of the second water inlet hole is higher than the ground, and water can enter the water inlet groove through the first water inlet hole or the second water inlet hole and then enter the well through the second fixing hole; through the combination of first inlet opening and second inlet opening for the collection of water, reduce the surface gathered water condition and produce.

Preferably, a third fixing groove is formed in the upper end face of the inspection well base, a second fixing hole is formed in the bottom of the third fixing groove, the lifting mechanism comprises a collecting box and a lifting assembly, the weight of the collecting box is smaller than that of the inspection well cover, the collecting box is located below the inspection well cover, an accommodating groove is formed in the end face, facing the inspection well cover, of the collecting box, the accommodating groove is located right below the first fixing hole, an accommodating hole is formed in one side, away from the opening, of the accommodating groove, and the opening of the accommodating hole is smaller than that of the first fixing hole; the lifting component comprises a supporting plate and a rack, the supporting plate is provided with two supporting plates which are parallel to each other, the supporting plates are arranged on a third fixing groove, the end face of the supporting plate is far away from an opening, the supporting plate is connected with a rotating rod in a rotating mode, one end of the rotating rod is provided with a gear, a third fixing hole for the gear to pass through is formed in one side of the third fixing groove, the gear is embedded into a clamping groove corresponding to the third fixing hole, the inspection well cover is arranged on one side of the third fixing groove, the rack is located in the clamping block, the rack is meshed with the gear, a winding drum which rotates synchronously with the rotating rod is arranged on the rotating rod in an outer sleeved mode, a winding rope is arranged on the winding drum, the winding rope is pulled out from the direction of the third fixing hole, and the winding rope is connected with the upper end face.

By adopting the technical scheme, water leaves behind the first fixing hole and enters the accommodating groove, and then enters the accommodating groove through the accommodating hole to be discharged; when the rainfall is large and the water yield of the containing hole is high, the water level in the containing groove is continuously raised, the weight of the collecting box is increased, the collecting box drives the winding drum to rotate through the winding rope, the winding drum drives the first gear to rotate, the rack and the inspection well cover are raised together due to the mutual meshing of the rack and the gear, and the second water inlet hole is exposed; on the contrary, due to the weight of the first collecting box, the inspection well cover naturally descends to be flush with the ground, and the collecting boxes ascend and reset.

Preferably, the bottom surface of the accommodating groove is provided with a guide ring, the section of the guide ring is in a right-angled triangle shape, and the height of the inclined surface of the guide ring is gradually reduced from the inner wall of the accommodating groove to the accommodating hole.

By adopting the technical scheme, the first inclined plane has a flow guide effect, so that the speed of water flowing to the accommodating hole is improved, and the water discharge in the accommodating groove is accelerated; in addition, the arrangement of the guide ring is beneficial to the water in the containing groove to flow to the containing hole, and the water residue in the containing groove is reduced.

Preferably, the lifting assemblies are arranged in a plurality, and the lifting assemblies are distributed along the axis circumference array of the inspection well seat.

By adopting the technical scheme, when the two lifting assemblies are arranged, the collection box drives the inspection well cover to ascend through the coiled rope along with the descending of the collection box, and the inspection well cover can ascend more easily along with the increase of the lifting assemblies; when lifting unit set up three and more, make the difficult slope of collection box, improve and collect stability between box and the inspection shaft seat.

Preferably, a floating piece is arranged on the lower end face of the inspection well cover.

By adopting the technical scheme, when the inspection well cover is driven to ascend by the lifting mechanism, water is filled below the floating piece, so that the floating piece is subjected to the buoyancy of the water, and the ascending speed of the floating piece is accelerated.

Preferably, a second fixing groove is formed in the end face, far away from the opening, of the first fixing groove, and the second fixing groove is communicated with the first fixing hole.

Through adopting above-mentioned technical scheme, when water was full of the second fixed slot, buoyancy piece received the buoyancy of water, made the inspection shaft lid rise, made rolling box and water drive inspection shaft lid rise better.

Preferably, an overflow pipe is arranged on the collecting box, and an overflow hole is formed in one end, far away from the collecting box, of the overflow pipe.

Through adopting above-mentioned technical scheme, set up the overflow pipe, the water inflow when collecting the box is greater than the water yield of collecting the box, leads to collecting the water level in the box and risees, and when the water level was higher than the spillway hole, water was discharged from the spillway hole.

Preferably, the second water inlet hole is in a vertical waist-shaped hole shape.

By adopting the technical scheme, as the inspection well is continuously raised, the channel for communicating the second water inlet hole with the outside is continuously increased, the flow of rainwater through the second water inlet hole is increased, and the drainage effect of the inspection well is improved; the inspection well can adjust the lifting height of the inspection well cover according to the rainfall, so that the inspection well is not easy to block when the rainfall is heavy.

Preferably, the second inlet opening is provided with a plurality of, and is a plurality of the second inlet opening distributes along the circumference of inspection shaft lid.

By adopting the technical scheme, the plurality of second water inlet holes accelerate the discharge of water on the ground, so that water is not easy to accumulate on the ground; in addition, when one second water inlet hole is blocked, other second water inlet holes can discharge water.

The embodiment also discloses a construction method of the inspection well, which comprises the following construction steps: firstly, selecting the number and the positions of inspection wells to be constructed before construction;

secondly, when the inspection well is constructed, firstly digging a foundation pit, and then constructing a well body;

thirdly, mounting a lifting mechanism on the inspection well seat, enabling the lifting assembly to be located in a third fixing groove, enabling the coiled rope to penetrate through a third fixing hole, and enabling the tail end of the coiled rope to be fixedly connected with the collecting box;

step four, mounting the inspection well base into the mounting groove;

and fifthly, mounting the inspection well cover into the first fixing groove, enabling the gear to be meshed with the rack, enabling the upper end face of the inspection well cover to be flush with the upper end face of the inspection well base, and finally burying the foundation pit to finish construction.

By adopting the technical scheme, the inspection well is constructed and produced through the steps from the first step to the fifth step, so that the constructed inspection well can rise in rainy days with heavy rainfall, drainage is accelerated, and water is not accumulated on the road surface easily.

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

1. when the rainfall is small, water enters the water inlet groove through the first water inlet hole and then enters the well body through the first fixing hole from the water inlet groove, and the water is discharged; when the rainfall is large, the inspection well cover is driven by the lifting mechanism to rise, so that the upper end surface of the second water inlet hole is higher than the ground, and water can enter the water inlet groove through the first water inlet hole or the second water inlet hole and then enter the well through the second fixing hole; through the combination of the first water inlet hole and the second water inlet hole, the collection of water is accelerated, and the condition of surface water accumulation is reduced;

2. when the floating piece receives the buoyancy of water, the floating piece transmits the acting force to the inspection well cover, so that the inspection well cover receives the upward acting force, and the inspection well cover is accelerated to rise.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a cross-sectional view highlighting the well base structure;

FIG. 3 is a schematic view of the structure of the inspection well base;

FIG. 4 is a schematic view of the well cover when extended;

fig. 5 is an enlarged schematic view of a portion a in fig. 3.

Reference numerals: 1. a well body; 11. mounting grooves; 12. a through hole; 2. a manhole seat; 21. a first fixing groove; 22. a second fixing groove; 23. a first fixing hole; 24. a third fixing groove; 25. a second fixing hole; 26. a third fixing hole; 3. an inspection well cover; 31. a water inlet groove; 32. a first water inlet hole; 33. a second water inlet hole; 34. a float member; 35. a card slot; 4. a lifting mechanism; 41. a collection box; 411. a containing groove; 412. a housing hole; 413. a guide ring; 414. an overflow pipe; 415. chamfering; 42. a lifting assembly; 421. a support plate; 4211. a circular hole; 422. a rack; 423. a rotating rod; 424. a reel; 425. rope rolling; 426. a gear.

Detailed Description

The embodiment discloses an inspection well. Referring to fig. 1 and 2, the inspection well comprises a well body 1, wherein a mounting groove 11 is formed in the well body 1, a through hole 12 is formed in the end face, far away from the opening, of the mounting groove 11, and the mounting groove 11 and the through hole 12 are arranged coaxially.

Referring to fig. 2 and 3, the well body 1 is provided with an inspection well seat 2, and the inspection well seat 2 is positioned in the installation groove 11. The upper end surface of the inspection well seat 2 is provided with a first fixing groove 21, and the end surface of the first fixing groove 21 far away from the opening is provided with a second fixing groove 22. The inner diameter of the second fixing groove 22 is smaller than that of the first fixing groove 21. The end face, away from the opening, of the second fixing groove 22 is provided with a first fixing hole 23, and the first fixing hole 23 is communicated with the through hole 12.

Referring to fig. 2 and 4, the inspection well base 2 is provided with an inspection well cover 3, and the inspection well cover 3 is located in the first fixing groove 21. The inspection well base 2 is provided with a lifting mechanism 4 for driving the inspection well cover 3 to move along the axial direction of the first fixing groove 21.

Referring to fig. 2 and 4, a water inlet groove 31 is formed in the lower end surface of the inspection well cover 3, and a first water inlet hole 32 communicated with the water inlet groove 31 is formed in the upper end surface of the inspection well cover 3. A plurality of second inlet openings 33 are formed in the circumferential surface of the inspection well cover 3, and the second inlet openings 33 are distributed along the central axis of the inspection well cover 3 in a circumferential array mode. The second water inlet hole 33 is in a vertical waist-shaped hole shape. When the lifting mechanism 4 drives the inspection well cover 3 to ascend, along with the gradual increase of the height between the upper end surface of the inspection well cover 3 and the ground, the larger the flow of water passing through the second water inlet hole 33 is, and the drainage efficiency of the inspection well is improved. When the inspection well cover 3 is located at the highest point, the lowest point of the second water inlet hole 33 is equal to or lower than the upper end surface of the inspection well cover 3.

Referring to fig. 2 and 3, the elevating mechanism 4 includes a collecting box 41 and an elevating assembly 42. The collection box 41 is positioned just below the first fixing hole 23, and the outer diameter of the collection box 41 is smaller than the inner diameter of the through-hole 12. The end face of the collecting box 41 facing the manhole cover 3 is provided with a containing groove 411, the containing groove 411 is provided with a containing hole 412 away from the open end face, and the collecting box 41, the containing groove 411 and the containing hole 412 are coaxially arranged. The opening of the accommodating hole 412 is smaller than the opening of the first fixing hole 23, and when the rainfall is greater than the discharge amount of the accommodating hole 412, the water level in the accommodating groove 411 continuously rises. The end face of the collecting box 41 far away from the opening is fixedly connected with a guide ring 413, and the section of the guide ring 413 is in a right-angled triangle shape. The outer circumferential surface of the guide ring 413 is fixedly connected with the inner circumferential surface of the accommodating groove 411, so that the height of the inclined surface of the guide ring 413 is gradually reduced from the inner circumferential surface of the accommodating groove 411 to the axis of the accommodating hole 412, the guide effect is achieved, and the water residue in the accommodating groove 411 is reduced.

Referring to fig. 2, an overflow pipe 414 is fixedly connected to a side surface of the collecting box 41, an overflow hole communicated with the accommodating groove 411 is formed in a side of the overflow pipe 414 away from the collecting box 41, when a water inflow of the collecting box 41 is greater than a water outflow of the accommodating hole 412, a water level in the collecting box 41 rises, and when the water level is higher than the overflow hole, water is discharged through the overflow hole.

Referring to fig. 2, the edge of the collecting box 41 facing the manhole cover 3 is provided with a chamfer 415, when the water inflow of the collecting box 41 is greater than the water outflow when the accommodating hole 412 and the overflow hole are combined, the water level in the collecting box 41 will continue to rise, and when the water level is flush with the upper end surface of the collecting box 41, the water entering the collecting box 41 will overflow from the upper side of the collecting box 41, and the chamfer 415 has a flow guiding effect, so that the overflowing water is discharged from the collecting box 41.

Referring to fig. 3, the lifting assembly 42 is provided in a plurality, and a plurality of the lifting assemblies 42 are distributed along the axis of the inspection well base 2 in a circumferential array. The lifting assembly 42 can be provided with three, four or five, and in this embodiment, the lifting assembly 42 is provided with four.

Referring to fig. 3 and 5, the upper end surface of the inspection well seat 2 is provided with four third fixing grooves 24, and the four third fixing grooves 24 are distributed in an array manner along the circumference of the axis of the inspection well seat 2. The end faces, away from the opening, of the four third fixing grooves 24 are all provided with second fixing holes 25. The end faces, facing the axis of the inspection well seat 2, of the four third fixing grooves 24 are provided with third fixing holes 26, and the four third fixing holes 26 are communicated with the first fixing groove 21. The axis of the third fixing hole 26 is perpendicular to the axis of the first fixing groove 21.

Referring to fig. 2 and 5, the lifting assembly 42 includes a support plate 421 and a rack 422. The supporting plates 421 are provided in two numbers, and the two supporting plates 421 are respectively located at two opposite sides of the second fixing hole 25. The two supporting plates 421 are both fixedly connected with the end face of the third fixing groove 24 away from the opening, and a circular hole 4211 is formed in one side of each of the two supporting plates 421 close to each other. A rotating rod 423 is rotatably connected between the two supporting plates 421, and the rotating rod 423 passes through the two round holes 4211.

Referring to fig. 3 and 5, a winding drum 424 is externally fitted around the rotating rod 423, and the winding drum 424 rotates in synchronization with the rotating rod 423. A winding rope 425 is wound on the winding drum 424, and one end of the winding rope 425 is fixedly connected with the winding drum 424. The other end of the winding rope 425 is pulled out from one side of the winding drum 424 far away from the axis of the first fixing groove 21, and then passes through the second fixing hole 25, and finally the winding rope 425 is fixedly connected with the upper end face of the collecting box 41. The diameter of the cord 425 is smaller than the diameter of the second fixing hole 25. When the string 425 is straightened, the manhole cover 3 is at the highest point.

Referring to fig. 2 and 4, a gear 426 is fixedly connected to one end of the rotation shaft, and the gear 426 passes through the third gear 426 and extends into the first fixing hole 23. The circumferential surface of the inspection well cover 3 is provided with a clamping groove 35 corresponding to the third fixing hole 26, and the clamping groove 35 penetrates through the inspection well cover 3 downwards. The rack 422 is fixedly connected with the inside of the clamping groove 35, and the rack 422 and the gear 426 are always meshed with each other no matter the gear 426 is positioned at the highest point or the lowest point.

Referring to fig. 2 and 3, a floating member 34 is disposed on a lower end surface of the inspection well cover 3, and the floating member 34 is annular. The lower end surface of the float 34 abuts against the lower end surface of the first fixing groove 21. The outer diameter of the floating member 34 is larger than the inner diameter of the second fixing groove 22, and the inner diameter of the floating member 34 is smaller than the inner diameter of the second fixing groove 22. The floating member 34 may be a foam sheet or an inflatable air bag, and in this embodiment, the floating member 34 is a foam sheet.

The implementation principle of inspection shaft of this application embodiment does: when rainfall is large, water sequentially passes through the first water inlet hole 32, the water inlet groove 31, the second fixing groove 22 and the first fixing hole 23 and then enters the accommodating groove 411, when the water discharging speed of the accommodating hole 412 is lower than the water inlet speed of the collecting box 41, the water level can rise in the accommodating groove 411, the quality of the collecting box 41 is increased, the driving winding rope 425 descends, the winding rope 425 drives the winding drum 424 and the gear 426 to rotate together, the gear 426 is meshed with the rack 422, the rack 422 and the inspection well cover 3 rise, and the water discharge on the road surface is accelerated through the second water inlet hole 33.

A construction method of an inspection well comprises the following construction steps: firstly, selecting the number and the positions of inspection wells to be constructed before construction;

step two, when the inspection well is constructed, firstly digging a foundation pit, and then constructing the well body 1;

thirdly, mounting the lifting mechanism 4 on the inspection well seat 2, enabling the lifting assembly 42 to be positioned in the third fixing groove 24, penetrating the rolling rope 425 through the third fixing hole 26, and enabling the tail end of the rolling rope 425 to be fixedly connected with the collecting box 41;

step four, mounting the inspection well seat 2 into the mounting groove 11;

and fifthly, installing the inspection well cover 3 into the first fixing groove 21, enabling the gear 426 to be meshed with the rack 422, enabling the upper end face of the inspection well cover 3 to be flush with the upper end face of the inspection well base 2, and finally burying the foundation pit to finish construction.

The working principle is as follows: when the rainfall is heavy, the collecting box 41 descends to enable the inspection well cover 3 to ascend, the drainage efficiency is accelerated, and water is not accumulated on the ground easily.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides an inspection shaft, includes well body (1), mounting groove (11) have been seted up on well body (1), through-hole (12), its characterized in that have been seted up to the bottom of mounting groove (11): the inspection well seat (2) is arranged in the mounting groove (11), a first fixing groove (21) is formed in the upper end face of the inspection well seat (2), and a first fixing hole (23) is formed in the bottom of the first fixing groove (21); be provided with inspection shaft lid (3) in mounting groove (11), intake antrum (31) have been seted up to the lower terminal surface of inspection shaft lid (3), first inlet opening (32) of intercommunication intake antrum (31) are seted up to the up end of inspection shaft lid (3), second inlet opening (33) of intercommunication intake antrum (31) are seted up to inspection shaft lid (3) lateral wall, be provided with elevating system (4) that drive inspection shaft lid (3) go up and down on inspection shaft seat (2), the axis direction removal that inspection shaft lid (3) can be followed mounting groove (11) makes second inlet opening (33) be higher than the up end of inspection shaft seat (2).

2. The inspection well according to claim 1, characterized in that: the inspection well comprises an inspection well base (2), wherein the upper end surface of the inspection well base (2) is provided with a third fixing groove (24), the bottom of the third fixing groove (24) is provided with a second fixing hole (25), a lifting mechanism (4) comprises a collecting box (41) and a lifting assembly (42), the weight of the collecting box (41) is smaller than that of an inspection well cover (3), the collecting box (41) is positioned below the inspection well cover (3), the end surface, facing the inspection well cover (3), of the collecting box (41) is provided with a containing groove (411), the containing groove (411) is positioned under a first fixing hole (23), one side, far away from the opening, of the containing groove (411) is provided with a containing hole (412), and the opening of the containing hole (412) is smaller than that of the first fixing hole (23); the lifting assembly (42) comprises a supporting plate (421) and a rack (422), the supporting plate (421) is provided with two supporting plates which are parallel to each other, the two supporting plates (421) are arranged on a third fixing groove (24) to be far away from an open end face, a rotating rod (423) is connected between the two supporting plates (421) in a rotating mode, a gear (426) is arranged at one end of the rotating rod (423), a third fixing hole (26) for the gear (426) to pass through is formed in one side, facing the first fixing groove (21), of the third fixing groove (24), the gear (426) is embedded into one side, facing the third fixing groove (24), of the inspection well cover (3) and provided with a clamping groove (35) corresponding to the third fixing hole (26), the rack (422) is located in the clamping groove, the rack (422) is meshed with the gear (426), a winding drum (424) which rotates synchronously with the rotating rod (423) is sleeved on the rotating rod (, the winding drum (424) is provided with a winding rope (425), the winding rope (425) is pulled out from the direction of the winding drum (424) far away from the third fixing hole (26), and the winding rope (425) penetrates through the second fixing hole (25) and then is connected with the upper end face of the collecting box (41).

3. The inspection well according to claim 2, characterized in that: the bottom surface of the accommodating groove (411) is provided with a guide ring (413), the section of the guide ring (413) is in a right triangle shape, and the height of the inclined surface of the guide ring (413) is gradually reduced from the inner wall of the accommodating groove (411) to the accommodating hole (412).

4. The inspection well according to claim 2, characterized in that: the lifting assembly (42) is provided with a plurality of lifting assemblies (42) which are distributed along the axis circumference array of the inspection well base (2).

5. The inspection well according to claim 1, characterized in that: and a floating piece (34) is arranged on the lower end face of the inspection well cover (3).

6. The inspection well according to claim 5, characterized in that: the end face, far away from the opening, of the first fixing groove (21) is provided with a second fixing groove (22), and the second fixing groove (22) is communicated with the first fixing hole (23).

7. The inspection well according to claim 2, characterized in that: an overflow pipe (414) is arranged on the collecting box (41), and an overflow hole is formed in one end, far away from the collecting box (41), of the overflow pipe (414).

8. The inspection well according to claim 1, characterized in that: the second water inlet hole (33) is in a vertical waist-shaped hole shape.

9. The inspection well according to claim 1, characterized in that: the second inlet opening (33) is provided with a plurality of, and is a plurality of second inlet opening (33) distributes along the circumference of inspection shaft lid (3).

10. The inspection well construction method according to claim 2, characterized in that: the method comprises the following construction steps: firstly, selecting the number and the positions of inspection wells to be constructed before construction;

secondly, when the inspection well is constructed, firstly digging a foundation pit, and then constructing the well body (1);

thirdly, mounting a lifting mechanism (4) on the inspection well seat (2), enabling a lifting assembly (42) to be located in a third fixing groove (24), enabling a rolling rope (425) to penetrate through the third fixing hole (26), and enabling the tail end of the rolling rope (425) to be fixedly connected with a collecting box (41);

step four, the inspection well seat (2) is arranged in the installation groove (11);

and fifthly, mounting the inspection well cover (3) into the first fixing groove (21), enabling the gear (426) to be meshed with the rack (422), enabling the upper end face of the inspection well cover (3) to be flush with the upper end face of the inspection well base (2), and finally burying the foundation pit to finish construction.